diff options
63 files changed, 15773 insertions, 47 deletions
diff --git a/build/all.gyp b/build/all.gyp index a5a97bd..e6a76e6 100644 --- a/build/all.gyp +++ b/build/all.gyp @@ -1103,6 +1103,7 @@ '../ipc/ipc.gyp:ipc_tests', '../media/media.gyp:media_unittests', '../net/net.gyp:net_unittests_run', + '../pdf/pdf.gyp:pdf', '../printing/printing.gyp:printing_unittests', '../remoting/remoting.gyp:remoting_webapp', '../sql/sql.gyp:sql_unittests', @@ -1114,11 +1115,6 @@ '../url/url.gyp:url_unittests', ], 'conditions': [ - ['internal_pdf', { - 'dependencies': [ - '../pdf/pdf.gyp:pdf', - ], - }], # internal_pdf ['target_arch=="ia32"', { 'dependencies': [ '../chrome/chrome.gyp:crash_service_win64', diff --git a/build/common.gypi b/build/common.gypi index 0879dac..5723363 100644 --- a/build/common.gypi +++ b/build/common.gypi @@ -1275,9 +1275,6 @@ # Build libpeerconnection as a static library by default. 'libpeer_target_type%': 'static_library', - # Set to 1 to compile with the built in pdf viewer. - 'internal_pdf%': 0, - # Set to 1 to compile with the OpenGL ES 2.0 conformance tests. 'internal_gles2_conform_tests%': 0, diff --git a/chrome/chrome_dll.gypi b/chrome/chrome_dll.gypi index 8891d27..eb7fcc3 100644 --- a/chrome/chrome_dll.gypi +++ b/chrome/chrome_dll.gypi @@ -282,6 +282,9 @@ 'app/chrome_main_mac.mm', 'app/chrome_main_mac.h', ], + 'dependencies': [ + '../pdf/pdf.gyp:pdf', + ], 'include_dirs': [ '<(grit_out_dir)', ], @@ -319,11 +322,6 @@ '../components/components.gyp:breakpad_stubs', ], }], # mac_breakpad_compiled_in - ['internal_pdf', { - 'dependencies': [ - '../pdf/pdf.gyp:pdf', - ], - }], ], # conditions }], # OS=="mac" ], # conditions diff --git a/chrome/chrome_dll_bundle.gypi b/chrome/chrome_dll_bundle.gypi index b168496..81ed0b9 100644 --- a/chrome/chrome_dll_bundle.gypi +++ b/chrome/chrome_dll_bundle.gypi @@ -76,6 +76,7 @@ # Bring in pdfsqueeze and run it on all pdfs '../build/temp_gyp/pdfsqueeze.gyp:pdfsqueeze', '../crypto/crypto.gyp:crypto', + '../pdf/pdf.gyp:pdf', # On Mac, Flash gets put into the framework, so we need this # dependency here. flash_player.gyp will copy the Flash bundle # into PRODUCT_DIR. @@ -146,13 +147,10 @@ }, { 'destination': '<(PRODUCT_DIR)/$(CONTENTS_FOLDER_PATH)/Internet Plug-Ins', - 'files': [], + 'files': [ + '<(PRODUCT_DIR)/PDF.plugin', + ], 'conditions': [ - ['internal_pdf', { - 'files': [ - '<(PRODUCT_DIR)/PDF.plugin', - ], - }], ['disable_nacl!=1', { 'files': [ '<(PRODUCT_DIR)/ppGoogleNaClPluginChrome.plugin', @@ -278,11 +276,6 @@ }, ], }], # mac_keystone - ['internal_pdf', { - 'dependencies': [ - '../pdf/pdf.gyp:pdf', - ], - }], ['debug_devtools==1', { 'postbuilds': [{ 'postbuild_name': 'Copy inspector files', diff --git a/chrome/chrome_exe.gypi b/chrome/chrome_exe.gypi index c0fe832..2ec9dca 100644 --- a/chrome/chrome_exe.gypi +++ b/chrome/chrome_exe.gypi @@ -368,7 +368,7 @@ '--breakpad=0', '--keystone=<(mac_keystone)', '--scm=1', - '--pdf=<(internal_pdf)', + '--pdf=1', '--bundle_id=<(mac_bundle_id)'], }, { @@ -430,23 +430,17 @@ # chrome/app/theme/google_chrome/BRANDING have the short name # "chrome" etc.; should we try to extract from there instead? - # On Mac, this is done in chrome_dll.gypi. - ['internal_pdf', { + # CrOS does this in a separate build step. + ['OS=="linux" and chromeos==0 and linux_dump_symbols==1', { 'dependencies': [ - '../pdf/pdf.gyp:pdf', - ], - 'conditions': [ - # CrOS does this in a separate build step. - ['OS=="linux" and chromeos==0 and linux_dump_symbols==1', { - 'dependencies': [ - '../pdf/pdf.gyp:pdf_linux_symbols', - ], - }], # OS=="linux" and chromeos==0 and linux_dump_symbols==1 + '../pdf/pdf.gyp:pdf_linux_symbols', ], - }], # internal_pdf + }], # OS=="linux" and chromeos==0 and linux_dump_symbols==1 ], 'dependencies': [ '../components/components.gyp:startup_metric_utils', + # On Mac, this is done in chrome_dll.gypi. + '../pdf/pdf.gyp:pdf', 'chrome_resources.gyp:packed_extra_resources', 'chrome_resources.gyp:packed_resources', # Copy Flash Player files to PRODUCT_DIR if applicable. Let the .gyp diff --git a/chrome/chrome_installer.gypi b/chrome/chrome_installer.gypi index a2dabf6..fad6b8c 100644 --- a/chrome/chrome_installer.gypi +++ b/chrome/chrome_installer.gypi @@ -495,6 +495,7 @@ '<(PRODUCT_DIR)/chrome', '<(PRODUCT_DIR)/chrome_sandbox', '<(PRODUCT_DIR)/libffmpegsumo.so', + '<(PRODUCT_DIR)/libpdf.so', '<(PRODUCT_DIR)/libppGoogleNaClPluginChrome.so', '<(PRODUCT_DIR)/xdg-mime', '<(PRODUCT_DIR)/xdg-settings', @@ -541,11 +542,6 @@ 'deb_arch': 'arm', 'rpm_arch': 'arm', }], - ['internal_pdf', { - 'packaging_files_binaries': [ - '<(PRODUCT_DIR)/libpdf.so', - ], - }], ['libpeer_target_type!="static_library"', { 'packaging_files_binaries': [ '<(PRODUCT_DIR)/lib/libpeerconnection.so', diff --git a/chrome/chrome_tests.gypi b/chrome/chrome_tests.gypi index a9e4a35..9ca59af 100644 --- a/chrome/chrome_tests.gypi +++ b/chrome/chrome_tests.gypi @@ -1770,11 +1770,6 @@ ['exclude', '^browser/captive_portal/'], ], }], - ['internal_pdf', { - 'dependencies': [ - '../pdf/pdf.gyp:pdf', - ], - }], ['enable_webrtc==0', { 'sources!': [ 'browser/extensions/api/webrtc_audio_private/webrtc_audio_private_browsertest.cc', diff --git a/pdf/DEPS b/pdf/DEPS new file mode 100644 index 0000000..dce0cc8 --- /dev/null +++ b/pdf/DEPS @@ -0,0 +1,5 @@ +include_rules = [ + "+net", + "+ppapi", + "+third_party/pdfium/fpdfsdk/include", +] diff --git a/pdf/Info.plist b/pdf/Info.plist new file mode 100644 index 0000000..9f3dfdf --- /dev/null +++ b/pdf/Info.plist @@ -0,0 +1,44 @@ +<?xml version="1.0" encoding="UTF-8"?> +<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> +<plist version="1.0"> +<dict> + <key>CFBundleDevelopmentRegion</key> + <string>English</string> + <key>CFBundleExecutable</key> + <string>${EXECUTABLE_NAME}</string> + <key>CFBundleIdentifier</key> + <string>org.chromium.pdf_plugin</string> + <key>CFBundleInfoDictionaryVersion</key> + <string>6.0</string> + <key>CFBundleName</key> + <string>${PRODUCT_NAME}</string> + <key>CFBundlePackageType</key> + <string>BRPL</string> + <key>CFBundleShortVersionString</key> + <string>1.0</string> + <key>CFBundleSignature</key> + <string>????</string> + <key>CFBundleVersion</key> + <string>1.0</string> + <key>CFPlugInDynamicRegisterFunction</key> + <string></string> + <key>CFPlugInDynamicRegistration</key> + <string>NO</string> + <key>WebPluginDescription</key> + <string>Chrome PDF Viewer</string> + <key>WebPluginMIMETypes</key> + <dict> + <key>application/pdf</key> + <dict> + <key>WebPluginExtensions</key> + <array> + <string>pdf</string> + </array> + <key>WebPluginTypeDescription</key> + <string>Acrobat Portable Document Format</string> + </dict> + </dict> + <key>WebPluginName</key> + <string>Chrome PDF Viewer</string> +</dict> +</plist> diff --git a/pdf/OWNERS b/pdf/OWNERS new file mode 100644 index 0000000..21031cc --- /dev/null +++ b/pdf/OWNERS @@ -0,0 +1,5 @@ +cevans@chromium.org +gene@chromium.org +jam@chromium.org +raymes@chromium.org +thestig@chromium.org
\ No newline at end of file diff --git a/pdf/button.cc b/pdf/button.cc new file mode 100644 index 0000000..3a30164 --- /dev/null +++ b/pdf/button.cc @@ -0,0 +1,179 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/button.h" + +#include "base/logging.h" +#include "pdf/draw_utils.h" +#include "ppapi/cpp/input_event.h" + +namespace chrome_pdf { + +Button::Button() + : style_(BUTTON_CLICKABLE), state_(BUTTON_NORMAL), is_pressed_(false) { +} + +Button::~Button() { +} + +bool Button::CreateButton(uint32 id, + const pp::Point& origin, + bool visible, + Control::Owner* owner, + ButtonStyle style, + const pp::ImageData& face_normal, + const pp::ImageData& face_highlighted, + const pp::ImageData& face_pressed) { + DCHECK(face_normal.size().GetArea()); + DCHECK(face_normal.size() == face_highlighted.size()); + DCHECK(face_normal.size() == face_pressed.size()); + + pp::Rect rc(origin, face_normal.size()); + if (!Control::Create(id, rc, visible, owner)) + return false; + + style_ = style; + + normal_ = face_normal; + highlighted_ = face_highlighted; + pressed_ = face_pressed; + + return true; +} + + +void Button::Paint(pp::ImageData* image_data, const pp::Rect& rc) { + if (!visible()) + return; + + pp::Rect draw_rc = rc.Intersect(rect()); + if (draw_rc.IsEmpty()) + return; + + pp::Point origin = draw_rc.point(); + draw_rc.Offset(-rect().x(), -rect().y()); + + AlphaBlend(GetCurrentImage(), draw_rc, image_data, origin, transparency()); +} + +bool Button::HandleEvent(const pp::InputEvent& event) { + if (!visible()) + return false; + + // Button handles mouse events only. + pp::MouseInputEvent mouse_event(event); + if (mouse_event.is_null()) + return false; + + pp::Point pt = mouse_event.GetPosition(); + if (!rect().Contains(pt) || + event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE) { + ChangeState(BUTTON_NORMAL, false); + owner()->SetEventCapture(id(), false); + return false; + } + + owner()->SetCursor(id(), PP_CURSORTYPE_POINTER); + owner()->SetEventCapture(id(), true); + + bool handled = true; + switch (event.GetType()) { + case PP_INPUTEVENT_TYPE_MOUSEMOVE: + if (state_ == BUTTON_NORMAL) + ChangeState(BUTTON_HIGHLIGHTED, false); + break; + case PP_INPUTEVENT_TYPE_MOUSEDOWN: + if (mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT) { + ChangeState(BUTTON_PRESSED, false); + is_pressed_ = true; + } + break; + case PP_INPUTEVENT_TYPE_MOUSEUP: + if (mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT && + is_pressed_) { + OnButtonClicked(); + is_pressed_ = false; + } else { + // Since button has not been pressed, return false to allow other + // controls (scrollbar) to process mouse button up. + return false; + } + break; + default: + handled = false; + break; + } + + return handled; +} + +void Button::OnEventCaptureReleased() { + ChangeState(BUTTON_NORMAL, false); +} + +void Button::Show(bool visible, bool invalidate) { + // If button become invisible, remove pressed flag. + if (!visible) + is_pressed_ = false; + Control::Show(visible, invalidate); +} + +void Button::AdjustTransparency(uint8 transparency, bool invalidate) { + // If button become invisible, remove pressed flag. + if (transparency == kTransparentAlpha) + is_pressed_ = false; + Control::AdjustTransparency(transparency, invalidate); +} + +void Button::SetPressedState(bool pressed) { + if (style_ == BUTTON_STATE) { + if (IsPressed() != pressed) + ChangeState(pressed ? BUTTON_PRESSED_STICKY : BUTTON_NORMAL, true); + } +} + +const pp::ImageData& Button::GetCurrentImage() { + switch (state_) { + case BUTTON_NORMAL: return normal_; + case BUTTON_HIGHLIGHTED: return highlighted_; + case BUTTON_PRESSED: + case BUTTON_PRESSED_STICKY: return pressed_; + } + NOTREACHED(); + return normal_; +} + +void Button::ChangeState(ButtonState new_state, bool force) { + if (style_ == BUTTON_STATE && !force) { + // If button is a state button and pressed state is sticky, + // user have to click on this button again to unpress it. + if ((state_ == BUTTON_PRESSED_STICKY && new_state != BUTTON_PRESSED_STICKY) + || + (state_ != BUTTON_PRESSED_STICKY && new_state == BUTTON_PRESSED_STICKY)) + return; + } + + if (state_ != new_state) { + state_ = new_state; + owner()->Invalidate(id(), rect()); + } +} + +void Button::OnButtonClicked() { + switch (style_) { + case BUTTON_CLICKABLE: + ChangeState(BUTTON_HIGHLIGHTED, true); + owner()->OnEvent(id(), EVENT_ID_BUTTON_CLICKED, NULL); + break; + case BUTTON_STATE: + SetPressedState(!IsPressed()); + owner()->OnEvent(id(), EVENT_ID_BUTTON_STATE_CHANGED, NULL); + break; + default: + NOTREACHED(); + } +} + +} // namespace chrome_pdf + diff --git a/pdf/button.h b/pdf/button.h new file mode 100644 index 0000000..fa2517d --- /dev/null +++ b/pdf/button.h @@ -0,0 +1,71 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_BUTTON_H_ +#define PDF_BUTTON_H_ + +#include "pdf/control.h" +#include "ppapi/cpp/image_data.h" +#include "ppapi/cpp/rect.h" + +namespace chrome_pdf { + +class Button : public Control { + public: + enum ButtonEventIds { + EVENT_ID_BUTTON_CLICKED, + EVENT_ID_BUTTON_STATE_CHANGED, + }; + + enum ButtonStyle { + BUTTON_CLICKABLE, + BUTTON_STATE + }; + + enum ButtonState { + BUTTON_NORMAL, + BUTTON_HIGHLIGHTED, + BUTTON_PRESSED, + BUTTON_PRESSED_STICKY, + }; + + Button(); + virtual ~Button(); + virtual bool CreateButton(uint32 id, + const pp::Point& origin, + bool visible, + Control::Owner* delegate, + ButtonStyle style, + const pp::ImageData& face_normal, + const pp::ImageData& face_highlighted, + const pp::ImageData& face_pressed); + + virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc); + virtual bool HandleEvent(const pp::InputEvent& event); + virtual void OnEventCaptureReleased(); + virtual void Show(bool visible, bool invalidate); + virtual void AdjustTransparency(uint8 transparency, bool invalidate); + + ButtonState state() const { return state_; } + bool IsPressed() const { return state() == BUTTON_PRESSED_STICKY; } + void SetPressedState(bool pressed); + + private: + void OnButtonClicked(); + + const pp::ImageData& GetCurrentImage(); + void ChangeState(ButtonState new_state, bool force); + + ButtonStyle style_; + ButtonState state_; + bool is_pressed_; + + pp::ImageData normal_; + pp::ImageData highlighted_; + pp::ImageData pressed_; +}; + +} // namespace chrome_pdf + +#endif // PDF_BUTTON_H_ diff --git a/pdf/chunk_stream.cc b/pdf/chunk_stream.cc new file mode 100644 index 0000000..7ac8f97 --- /dev/null +++ b/pdf/chunk_stream.cc @@ -0,0 +1,172 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/chunk_stream.h" + +#define __STDC_LIMIT_MACROS +#ifdef _WIN32 +#include <limits.h> +#else +#include <stdint.h> +#endif + +#include <algorithm> + +#include "base/basictypes.h" + +namespace chrome_pdf { + +ChunkStream::ChunkStream() { +} + +ChunkStream::~ChunkStream() { +} + +void ChunkStream::Clear() { + chunks_.clear(); + data_.clear(); +} + +void ChunkStream::Preallocate(size_t stream_size) { + data_.reserve(stream_size); +} + +size_t ChunkStream::GetSize() { + return data_.size(); +} + +bool ChunkStream::WriteData(size_t offset, void* buffer, size_t size) { + if (SIZE_MAX - size < offset) + return false; + + if (data_.size() < offset + size) + data_.resize(offset + size); + + memcpy(&data_[offset], buffer, size); + + if (chunks_.empty()) { + chunks_[offset] = size; + return true; + } + + std::map<size_t, size_t>::iterator start = chunks_.upper_bound(offset); + if (start != chunks_.begin()) + --start; // start now points to the key equal or lower than offset. + if (start->first + start->second < offset) + ++start; // start element is entirely before current chunk, skip it. + + std::map<size_t, size_t>::iterator end = chunks_.upper_bound(offset + size); + if (start == end) { // No chunks to merge. + chunks_[offset] = size; + return true; + } + + --end; + + size_t new_offset = std::min<size_t>(start->first, offset); + size_t new_size = + std::max<size_t>(end->first + end->second, offset + size) - new_offset; + + chunks_.erase(start, ++end); + + chunks_[new_offset] = new_size; + + return true; +} + +bool ChunkStream::ReadData(size_t offset, size_t size, void* buffer) const { + if (!IsRangeAvailable(offset, size)) + return false; + + memcpy(buffer, &data_[offset], size); + return true; +} + +bool ChunkStream::GetMissedRanges( + size_t offset, size_t size, + std::vector<std::pair<size_t, size_t> >* ranges) const { + if (IsRangeAvailable(offset, size)) + return false; + + ranges->clear(); + if (chunks_.empty()) { + ranges->push_back(std::pair<size_t, size_t>(offset, size)); + return true; + } + + std::map<size_t, size_t>::const_iterator start = chunks_.upper_bound(offset); + if (start != chunks_.begin()) + --start; // start now points to the key equal or lower than offset. + if (start->first + start->second < offset) + ++start; // start element is entirely before current chunk, skip it. + + std::map<size_t, size_t>::const_iterator end = + chunks_.upper_bound(offset + size); + if (start == end) { // No data in the current range available. + ranges->push_back(std::pair<size_t, size_t>(offset, size)); + return true; + } + + size_t cur_offset = offset; + std::map<size_t, size_t>::const_iterator it; + for (it = start; it != end; ++it) { + if (cur_offset < it->first) { + size_t new_size = it->first - cur_offset; + ranges->push_back(std::pair<size_t, size_t>(cur_offset, new_size)); + cur_offset = it->first + it->second; + } else if (cur_offset < it->first + it->second) { + cur_offset = it->first + it->second; + } + } + + // Add last chunk. + if (cur_offset < offset + size) + ranges->push_back(std::pair<size_t, size_t>(cur_offset, + offset + size - cur_offset)); + + return true; +} + +bool ChunkStream::IsRangeAvailable(size_t offset, size_t size) const { + if (chunks_.empty()) + return false; + + if (SIZE_MAX - size < offset) + return false; + + std::map<size_t, size_t>::const_iterator it = chunks_.upper_bound(offset); + if (it == chunks_.begin()) + return false; // No chunks includes offset byte. + + --it; // Now it starts equal or before offset. + return (it->first + it->second) >= (offset + size); +} + +size_t ChunkStream::GetFirstMissingByte() const { + if (chunks_.empty()) + return 0; + std::map<size_t, size_t>::const_iterator begin = chunks_.begin(); + return begin->first > 0 ? 0 : begin->second; +} + +size_t ChunkStream::GetLastByteBefore(size_t offset) const { + if (chunks_.empty()) + return 0; + std::map<size_t, size_t>::const_iterator it = chunks_.upper_bound(offset); + if (it == chunks_.begin()) + return 0; + --it; + return it->first + it->second; +} + +size_t ChunkStream::GetFirstByteAfter(size_t offset) const { + if (chunks_.empty()) + return 0; + std::map<size_t, size_t>::const_iterator it = chunks_.upper_bound(offset); + if (it == chunks_.end()) + return data_.size(); + return it->first; +} + +} // namespace chrome_pdf diff --git a/pdf/chunk_stream.h b/pdf/chunk_stream.h new file mode 100644 index 0000000..fac1ec6 --- /dev/null +++ b/pdf/chunk_stream.h @@ -0,0 +1,48 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_CHUNK_STREAM_H_ +#define PDF_CHUNK_STREAM_H_ + +#include <stddef.h> + +#include <map> +#include <vector> + +namespace chrome_pdf { + +// This class collects a chunks of data into one data stream. Client can check +// if data in certain range is available, and get missing chunks of data. +class ChunkStream { + public: + ChunkStream(); + ~ChunkStream(); + + void Clear(); + + void Preallocate(size_t stream_size); + size_t GetSize(); + + bool WriteData(size_t offset, void* buffer, size_t size); + bool ReadData(size_t offset, size_t size, void* buffer) const; + + // Returns vector of pairs where first is an offset, second is a size. + bool GetMissedRanges(size_t offset, size_t size, + std::vector<std::pair<size_t, size_t> >* ranges) const; + bool IsRangeAvailable(size_t offset, size_t size) const; + size_t GetFirstMissingByte() const; + + size_t GetLastByteBefore(size_t offset) const; + size_t GetFirstByteAfter(size_t offset) const; + + private: + std::vector<unsigned char> data_; + + // Pair, first - begining of the chunk, second - size of the chunk. + std::map<size_t, size_t> chunks_; +}; + +}; // namespace chrome_pdf + +#endif diff --git a/pdf/control.cc b/pdf/control.cc new file mode 100644 index 0000000..34b60ba --- /dev/null +++ b/pdf/control.cc @@ -0,0 +1,114 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/control.h" + +#include "base/logging.h" +#include "pdf/draw_utils.h" + +namespace chrome_pdf { + +Control::Control() + : id_(kInvalidControlId), + visible_(false), + owner_(NULL), + transparency_(kOpaqueAlpha) { +} + +Control::~Control() { +} + +bool Control::Create(uint32 id, const pp::Rect& rc, + bool visible, Owner* owner) { + DCHECK(owner); + if (owner_ || id == kInvalidControlId) + return false; // Already created or id is invalid. + id_ = id; + rc_ = rc; + visible_ = visible; + owner_ = owner; + return true; +} + +bool Control::HandleEvent(const pp::InputEvent& event) { + return false; +} + +void Control::PaintMultipleRects(pp::ImageData* image_data, + const std::list<pp::Rect>& rects) { + DCHECK(rects.size() > 0); + if (rects.size() == 1) { + Paint(image_data, rects.front()); + return; + } + + // Some rects in the input list may overlap. To prevent double + // paining (causes problems with semi-transparent controls) we'll + // paint control into buffer image data only once and copy requested + // rectangles. + pp::ImageData buffer(owner()->GetInstance(), image_data->format(), + rect().size(), false); + pp::Rect draw_rc = pp::Rect(image_data->size()).Intersect(rect()); + pp::Rect ctrl_rc = pp::Rect(rect().point() - draw_rc.point(), draw_rc.size()); + CopyImage(*image_data, draw_rc, &buffer, ctrl_rc, false); + + // Temporary move control to origin (0,0) and draw it into temp buffer. + // Move to the original position afterward. Since this is going on temp + // buffer, we don't need to invalidate here. + pp::Rect temp = rect(); + MoveTo(pp::Point(0, 0), false); + Paint(&buffer, ctrl_rc); + MoveTo(temp.point(), false); + + std::list<pp::Rect>::const_iterator iter; + for (iter = rects.begin(); iter != rects.end(); ++iter) { + pp::Rect draw_rc = rect().Intersect(*iter); + if (!draw_rc.IsEmpty()) { + // Copy requested rect from the buffer image. + pp::Rect src_rc = draw_rc; + src_rc.Offset(-rect().x(), -rect().y()); + CopyImage(buffer, src_rc, image_data, draw_rc, false); + } + } +} + +void Control::Show(bool visible, bool invalidate) { + if (visible_ != visible) { + visible_ = visible; + if (invalidate) + owner_->Invalidate(id_, rc_); + } +} + +void Control::AdjustTransparency(uint8 transparency, bool invalidate) { + if (transparency_ != transparency) { + transparency_ = transparency; + if (invalidate && visible_) + owner_->Invalidate(id_, rc_); + } +} + +void Control::MoveBy(const pp::Point& offset, bool invalidate) { + pp::Rect old_rc = rc_; + rc_.Offset(offset); + if (invalidate && visible_) { + owner()->Invalidate(id(), old_rc); + owner()->Invalidate(id(), rect()); + } +} + +void Control::SetRect(const pp::Rect& rc, bool invalidate) { + pp::Rect old_rc = rc_; + rc_ = rc; + if (invalidate && visible_) { + owner()->Invalidate(id(), old_rc); + owner()->Invalidate(id(), rect()); + } +} + +void Control::MoveTo(const pp::Point& origin, bool invalidate) { + MoveBy(origin - rc_.point(), invalidate); +} + +} // namespace chrome_pdf diff --git a/pdf/control.h b/pdf/control.h new file mode 100644 index 0000000..babb37a --- /dev/null +++ b/pdf/control.h @@ -0,0 +1,77 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_CONTROL_H_ +#define PDF_CONTROL_H_ + +#include <list> + +#include "base/basictypes.h" +#include "ppapi/c/dev/pp_cursor_type_dev.h" +#include "ppapi/cpp/rect.h" + +namespace pp { +class ImageData; +class InputEvent; +class Instance; +} + +namespace chrome_pdf { + +const uint32 kInvalidControlId = 0; + +class Control { + public: + class Owner { + public: + virtual ~Owner() {} + virtual void OnEvent(uint32 control_id, uint32 event_id, void* data) = 0; + virtual void Invalidate(uint32 control_id, const pp::Rect& rc) = 0; + virtual uint32 ScheduleTimer(uint32 control_id, uint32 timeout_ms) = 0; + virtual void SetEventCapture(uint32 control_id, bool set_capture) = 0; + virtual void SetCursor(uint32 control_id, + PP_CursorType_Dev cursor_type) = 0; + virtual pp::Instance* GetInstance() = 0; + }; + + Control(); + virtual ~Control(); + virtual bool Create(uint32 id, const pp::Rect& rc, + bool visible, Owner* owner); + + virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc) {} + virtual bool HandleEvent(const pp::InputEvent& event); + virtual void OnTimerFired(uint32 timer_id) {} + virtual void EventCaptureReleased() {} + + // Paint control into multiple destination rects. + virtual void PaintMultipleRects(pp::ImageData* image_data, + const std::list<pp::Rect>& rects); + + virtual void Show(bool visible, bool invalidate); + virtual void AdjustTransparency(uint8 transparency, bool invalidate); + virtual void MoveBy(const pp::Point& offset, bool invalidate); + virtual void SetRect(const pp::Rect& rc, bool invalidate); + + void MoveTo(const pp::Point& origin, bool invalidate); + + uint32 id() const { return id_; } + const pp::Rect& rect() const { return rc_; } + bool visible() const { return visible_; } + Owner* owner() { return owner_; } + uint8 transparency() const { return transparency_; } + + private: + uint32 id_; + pp::Rect rc_; + bool visible_; + Owner* owner_; + uint8 transparency_; +}; + +typedef Control::Owner ControlOwner; + +} // namespace chrome_pdf + +#endif // PDF_CONTROL_H_ diff --git a/pdf/document_loader.cc b/pdf/document_loader.cc new file mode 100644 index 0000000..5a35b47 --- /dev/null +++ b/pdf/document_loader.cc @@ -0,0 +1,515 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/document_loader.h" + +#include "base/logging.h" +#include "base/strings/string_util.h" +#include "net/http/http_util.h" +#include "ppapi/c/pp_errors.h" +#include "ppapi/cpp/url_loader.h" +#include "ppapi/cpp/url_request_info.h" +#include "ppapi/cpp/url_response_info.h" + +namespace chrome_pdf { + +// Document below size will be downloaded in one chunk. +const uint32 kMinFileSize = 64*1024; + +DocumentLoader::DocumentLoader(Client* client) + : client_(client), partial_document_(false), request_pending_(false), + current_pos_(0), current_chunk_size_(0), current_chunk_read_(0), + document_size_(0), header_request_(true), is_multipart_(false) { + loader_factory_.Initialize(this); +} + +DocumentLoader::~DocumentLoader() { +} + +bool DocumentLoader::Init(const pp::URLLoader& loader, + const std::string& url, + const std::string& headers) { + DCHECK(url_.empty()); + url_ = url; + loader_ = loader; + + std::string response_headers; + if (!headers.empty()) { + response_headers = headers; + } else { + pp::URLResponseInfo response = loader_.GetResponseInfo(); + pp::Var headers_var = response.GetHeaders(); + + if (headers_var.is_string()) { + response_headers = headers_var.AsString(); + } + } + + bool accept_ranges_bytes = false; + bool content_encoded = false; + uint32 content_length = 0; + std::string type; + std::string disposition; + if (!response_headers.empty()) { + net::HttpUtil::HeadersIterator it(response_headers.begin(), + response_headers.end(), "\n"); + while (it.GetNext()) { + if (LowerCaseEqualsASCII(it.name(), "content-length")) { + content_length = atoi(it.values().c_str()); + } else if (LowerCaseEqualsASCII(it.name(), "accept-ranges")) { + accept_ranges_bytes = LowerCaseEqualsASCII(it.values(), "bytes"); + } else if (LowerCaseEqualsASCII(it.name(), "content-encoding")) { + content_encoded = true; + } else if (LowerCaseEqualsASCII(it.name(), "content-type")) { + type = it.values(); + size_t semi_colon_pos = type.find(';'); + if (semi_colon_pos != std::string::npos) { + type = type.substr(0, semi_colon_pos); + } + TrimWhitespace(type, base::TRIM_ALL, &type); + } else if (LowerCaseEqualsASCII(it.name(), "content-disposition")) { + disposition = it.values(); + } + } + } + if (!type.empty() && + !EndsWith(type, "/pdf", false) && + !EndsWith(type, ".pdf", false) && + !EndsWith(type, "/x-pdf", false) && + !EndsWith(type, "/*", false) && + !EndsWith(type, "/acrobat", false) && + !EndsWith(type, "/unknown", false) && + !StartsWithASCII(url, "blob:", false)) { + return false; + } + if (StartsWithASCII(disposition, "attachment", false)) { + return false; + } + + if (content_length > 0) + chunk_stream_.Preallocate(content_length); + + document_size_ = content_length; + requests_count_ = 0; + + // Document loading strategy. + // Following table shows the growth on the minimal request size depending + // on the number requests that has been made already. + chunk_size_table_[10] = 32*1024; + chunk_size_table_[20] = 64*1024; + chunk_size_table_[30] = 128*1024; + chunk_size_table_[40] = 256*1024; + chunk_size_table_[50] = 512*1024; + chunk_size_table_[60] = 1024*1024; + chunk_size_table_[70] = 2048*1024; + + // Enable partial loading only if file size is above the threshold. + // It will allow avoiding latency for multiple requests. + if (content_length > kMinFileSize && + accept_ranges_bytes && + !content_encoded) { + LoadPartialDocument(); + } else { + LoadFullDocument(); + } + return true; +} + +void DocumentLoader::LoadPartialDocument() { + partial_document_ = true; + // Force the main request to be cancelled, since if we're a full-frame plugin + // there could be other references to the loader. + loader_.Close(); + loader_ = pp::URLLoader(); + // Download file header. + header_request_ = true; + RequestData(0, std::min(GetRequestSize(), document_size_)); +} + +void DocumentLoader::LoadFullDocument() { + partial_document_ = false; + chunk_buffer_.clear(); + ReadMore(); +} + +bool DocumentLoader::IsDocumentComplete() const { + if (document_size_ == 0) // Document size unknown. + return false; + return IsDataAvailable(0, document_size_); +} + +uint32 DocumentLoader::GetAvailableData() const { + if (document_size_ == 0) { // If document size is unknown. + return current_pos_; + } + + std::vector<std::pair<size_t, size_t> > ranges; + chunk_stream_.GetMissedRanges(0, document_size_, &ranges); + uint32 available = document_size_; + std::vector<std::pair<size_t, size_t> >::iterator it; + for (it = ranges.begin(); it != ranges.end(); ++it) { + available -= it->second; + } + return available; +} + +void DocumentLoader::ClearPendingRequests() { + // The first item in the queue is pending (need to keep it in the queue). + if (pending_requests_.size() > 1) { + // Remove all elements except the first one. + pending_requests_.erase(++pending_requests_.begin(), + pending_requests_.end()); + } +} + +bool DocumentLoader::GetBlock(uint32 position, uint32 size, void* buf) const { + return chunk_stream_.ReadData(position, size, buf); +} + +bool DocumentLoader::IsDataAvailable(uint32 position, uint32 size) const { + return chunk_stream_.IsRangeAvailable(position, size); +} + +void DocumentLoader::RequestData(uint32 position, uint32 size) { + DCHECK(partial_document_); + + // We have some artefact request from + // PDFiumEngine::OnDocumentComplete() -> FPDFAvail_IsPageAvail after + // document is complete. + // We need this fix in PDFIum. Adding this as a work around. + // Bug: http://code.google.com/p/chromium/issues/detail?id=79996 + // Test url: + // http://www.icann.org/en/correspondence/holtzman-to-jeffrey-02mar11-en.pdf + if (IsDocumentComplete()) + return; + + pending_requests_.push_back(std::pair<size_t, size_t>(position, size)); + DownloadPendingRequests(); +} + +void DocumentLoader::DownloadPendingRequests() { + if (request_pending_ || pending_requests_.empty()) + return; + + // Remove already completed requests. + // By design DownloadPendingRequests() should have at least 1 request in the + // queue. ReadComplete() will remove the last pending comment from the queue. + while (pending_requests_.size() > 1) { + if (IsDataAvailable(pending_requests_.front().first, + pending_requests_.front().second)) { + pending_requests_.pop_front(); + } else { + break; + } + } + + uint32 pos = pending_requests_.front().first; + uint32 size = pending_requests_.front().second; + if (IsDataAvailable(pos, size)) { + ReadComplete(); + return; + } + + // If current request has been partially downloaded already, split it into + // a few smaller requests. + std::vector<std::pair<size_t, size_t> > ranges; + chunk_stream_.GetMissedRanges(pos, size, &ranges); + if (ranges.size() > 0) { + pending_requests_.pop_front(); + pending_requests_.insert(pending_requests_.begin(), + ranges.begin(), ranges.end()); + pos = pending_requests_.front().first; + size = pending_requests_.front().second; + } + + uint32 cur_request_size = GetRequestSize(); + // If size is less than default request, try to expand download range for + // more optimal download. + if (size < cur_request_size && partial_document_) { + // First, try to expand block towards the end of the file. + uint32 new_pos = pos; + uint32 new_size = cur_request_size; + if (pos + new_size > document_size_) + new_size = document_size_ - pos; + + std::vector<std::pair<size_t, size_t> > ranges; + if (chunk_stream_.GetMissedRanges(new_pos, new_size, &ranges)) { + new_pos = ranges[0].first; + new_size = ranges[0].second; + } + + // Second, try to expand block towards the beginning of the file. + if (new_size < cur_request_size) { + uint32 block_end = new_pos + new_size; + if (block_end > cur_request_size) { + new_pos = block_end - cur_request_size; + } else { + new_pos = 0; + } + new_size = block_end - new_pos; + + if (chunk_stream_.GetMissedRanges(new_pos, new_size, &ranges)) { + new_pos = ranges.back().first; + new_size = ranges.back().second; + } + } + pos = new_pos; + size = new_size; + } + + size_t last_byte_before = chunk_stream_.GetLastByteBefore(pos); + size_t first_byte_after = chunk_stream_.GetFirstByteAfter(pos + size - 1); + if (pos - last_byte_before < cur_request_size) { + size = pos + size - last_byte_before; + pos = last_byte_before; + } + + if ((pos + size < first_byte_after) && + (pos + size + cur_request_size >= first_byte_after)) + size = first_byte_after - pos; + + request_pending_ = true; + + // Start downloading first pending request. + loader_.Close(); + loader_ = client_->CreateURLLoader(); + pp::CompletionCallback callback = + loader_factory_.NewCallback(&DocumentLoader::DidOpen); + pp::URLRequestInfo request = GetRequest(pos, size); + requests_count_++; + int rv = loader_.Open(request, callback); + if (rv != PP_OK_COMPLETIONPENDING) + callback.Run(rv); +} + +pp::URLRequestInfo DocumentLoader::GetRequest(uint32 position, + uint32 size) const { + pp::URLRequestInfo request(client_->GetPluginInstance()); + request.SetURL(url_.c_str()); + request.SetMethod("GET"); + request.SetFollowRedirects(true); + + const size_t kBufSize = 100; + char buf[kBufSize]; + // According to rfc2616, byte range specifies position of the first and last + // bytes in the requested range inclusively. Therefore we should subtract 1 + // from the position + size, to get index of the last byte that needs to be + // downloaded. + base::snprintf(buf, kBufSize, "Range: bytes=%d-%d", position, + position + size - 1); + pp::Var header(buf); + request.SetHeaders(header); + + return request; +} + +void DocumentLoader::DidOpen(int32_t result) { + if (result != PP_OK) { + NOTREACHED(); + return; + } + + is_multipart_ = false; + current_chunk_size_ = 0; + current_chunk_read_ = 0; + + pp::Var headers_var = loader_.GetResponseInfo().GetHeaders(); + std::string headers; + if (headers_var.is_string()) + headers = headers_var.AsString(); + + std::string boundary = GetMultiPartBoundary(headers); + if (boundary.size()) { + // Leave position untouched for now, when we read the data we'll get it. + is_multipart_ = true; + multipart_boundary_ = boundary; + } else { + // Need to make sure that the server returned a byte-range, since it's + // possible for a server to just ignore our bye-range request and just + // return the entire document even if it supports byte-range requests. + // i.e. sniff response to + // http://www.act.org/compass/sample/pdf/geometry.pdf + current_pos_ = 0; + uint32 start_pos, end_pos; + if (GetByteRange(headers, &start_pos, &end_pos)) { + current_pos_ = start_pos; + if (end_pos && end_pos > start_pos) + current_chunk_size_ = end_pos - start_pos + 1; + } + } + + ReadMore(); +} + +bool DocumentLoader::GetByteRange(const std::string& headers, uint32* start, + uint32* end) { + net::HttpUtil::HeadersIterator it(headers.begin(), headers.end(), "\n"); + while (it.GetNext()) { + if (LowerCaseEqualsASCII(it.name(), "content-range")) { + std::string range = it.values().c_str(); + if (StartsWithASCII(range, "bytes", false)) { + range = range.substr(strlen("bytes")); + std::string::size_type pos = range.find('-'); + std::string range_end; + if (pos != std::string::npos) + range_end = range.substr(pos + 1); + TrimWhitespaceASCII(range, base::TRIM_LEADING, &range); + TrimWhitespaceASCII(range_end, base::TRIM_LEADING, &range_end); + *start = atoi(range.c_str()); + *end = atoi(range_end.c_str()); + return true; + } + } + } + return false; +} + +std::string DocumentLoader::GetMultiPartBoundary(const std::string& headers) { + net::HttpUtil::HeadersIterator it(headers.begin(), headers.end(), "\n"); + while (it.GetNext()) { + if (LowerCaseEqualsASCII(it.name(), "content-type")) { + std::string type = StringToLowerASCII(it.values()); + if (StartsWithASCII(type, "multipart/", true)) { + const char* boundary = strstr(type.c_str(), "boundary="); + if (!boundary) { + NOTREACHED(); + break; + } + + return std::string(boundary + 9); + } + } + } + return std::string(); +} + +void DocumentLoader::ReadMore() { + pp::CompletionCallback callback = + loader_factory_.NewCallback(&DocumentLoader::DidRead); + int rv = loader_.ReadResponseBody(buffer_, sizeof(buffer_), callback); + if (rv != PP_OK_COMPLETIONPENDING) + callback.Run(rv); +} + +void DocumentLoader::DidRead(int32_t result) { + if (result > 0) { + char* start = buffer_; + size_t length = result; + if (is_multipart_ && result > 2) { + for (int i = 2; i < result; ++i) { + if ((buffer_[i - 1] == '\n' && buffer_[i - 2] == '\n') || + (i >= 4 && + buffer_[i - 1] == '\n' && buffer_[i - 2] == '\r' && + buffer_[i - 3] == '\n' && buffer_[i - 4] == '\r')) { + uint32 start_pos, end_pos; + if (GetByteRange(std::string(buffer_, i), &start_pos, &end_pos)) { + current_pos_ = start_pos; + start += i; + length -= i; + if (end_pos && end_pos > start_pos) + current_chunk_size_ = end_pos - start_pos + 1; + } + break; + } + } + + // Reset this flag so we don't look inside the buffer in future calls of + // DidRead for this response. Note that this code DOES NOT handle multi- + // part responses with more than one part (we don't issue them at the + // moment, so they shouldn't arrive). + is_multipart_ = false; + } + + if (current_chunk_size_ && + current_chunk_read_ + length > current_chunk_size_) + length = current_chunk_size_ - current_chunk_read_; + + if (length) { + if (document_size_ > 0) { + chunk_stream_.WriteData(current_pos_, start, length); + } else { + // If we did not get content-length in the response, we can't + // preallocate buffer for the entire document. Resizing array causing + // memory fragmentation issues on the large files and OOM exceptions. + // To fix this, we collect all chunks of the file to the list and + // concatenate them together after request is complete. + chunk_buffer_.push_back(std::vector<unsigned char>()); + chunk_buffer_.back().resize(length); + memcpy(&(chunk_buffer_.back()[0]), start, length); + } + current_pos_ += length; + current_chunk_read_ += length; + client_->OnNewDataAvailable(); + } + ReadMore(); + } else if (result == PP_OK) { + ReadComplete(); + } else { + NOTREACHED(); + } +} + +void DocumentLoader::ReadComplete() { + if (!partial_document_) { + if (document_size_ == 0) { + // For the document with no 'content-length" specified we've collected all + // the chunks already. Let's allocate final document buffer and copy them + // over. + chunk_stream_.Preallocate(current_pos_); + uint32 pos = 0; + std::list<std::vector<unsigned char> >::iterator it; + for (it = chunk_buffer_.begin(); it != chunk_buffer_.end(); ++it) { + chunk_stream_.WriteData(pos, &((*it)[0]), it->size()); + pos += it->size(); + } + chunk_buffer_.clear(); + } + document_size_ = current_pos_; + client_->OnDocumentComplete(); + return; + } + + request_pending_ = false; + pending_requests_.pop_front(); + + // If there are more pending request - continue downloading. + if (!pending_requests_.empty()) { + DownloadPendingRequests(); + return; + } + + if (IsDocumentComplete()) { + client_->OnDocumentComplete(); + return; + } + + if (header_request_) + client_->OnPartialDocumentLoaded(); + else + client_->OnPendingRequestComplete(); + header_request_ = false; + + // The OnPendingRequestComplete could have added more requests. + if (!pending_requests_.empty()) { + DownloadPendingRequests(); + } else { + // Document is not complete and we have no outstanding requests. + // Let's keep downloading PDF file in small chunks. + uint32 pos = chunk_stream_.GetFirstMissingByte(); + std::vector<std::pair<size_t, size_t> > ranges; + chunk_stream_.GetMissedRanges(pos, GetRequestSize(), &ranges); + DCHECK(ranges.size() > 0); + RequestData(ranges[0].first, ranges[0].second); + } +} + +uint32 DocumentLoader::GetRequestSize() const { + std::map<uint32, uint32>::const_iterator iter = + chunk_size_table_.lower_bound(requests_count_); + if (iter == chunk_size_table_.end()) + iter--; + return iter->second; +} + +} // namespace chrome_pdf diff --git a/pdf/document_loader.h b/pdf/document_loader.h new file mode 100644 index 0000000..4a78688 --- /dev/null +++ b/pdf/document_loader.h @@ -0,0 +1,126 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_DOCUMENT_LOADER_H_ +#define PDF_DOCUMENT_LOADER_H_ + +#include <list> +#include <map> +#include <string> +#include <vector> + +#include "base/basictypes.h" +#include "pdf/chunk_stream.h" +#include "ppapi/cpp/url_loader.h" +#include "ppapi/utility/completion_callback_factory.h" + +#define kDefaultRequestSize 32768u + +namespace chrome_pdf { + +class DocumentLoader { + public: + class Client { + public: + // Gets the pp::Instance object. + virtual pp::Instance* GetPluginInstance() = 0; + // Creates new URLLoader based on client settings. + virtual pp::URLLoader CreateURLLoader() = 0; + // Notification called when partial information about document is available. + // Only called for urls that returns full content size and supports byte + // range requests. + virtual void OnPartialDocumentLoaded() = 0; + // Notification called when all outstanding pending requests are complete. + virtual void OnPendingRequestComplete() = 0; + // Notification called when new data is available. + virtual void OnNewDataAvailable() = 0; + // Notification called when document is fully loaded. + virtual void OnDocumentComplete() = 0; + }; + + explicit DocumentLoader(Client* client); + virtual ~DocumentLoader(); + + bool Init(const pp::URLLoader& loader, + const std::string& url, + const std::string& headers); + + // Data access interface. Return true is sucessful. + bool GetBlock(uint32 position, uint32 size, void* buf) const; + + // Data availability interface. Return true data avaialble. + bool IsDataAvailable(uint32 position, uint32 size) const; + + // Data availability interface. Return true data avaialble. + void RequestData(uint32 position, uint32 size); + + bool IsDocumentComplete() const; + uint32 document_size() const { return document_size_; } + + // Return number of bytes available. + uint32 GetAvailableData() const; + + // Clear pending requests from the queue. + void ClearPendingRequests(); + + bool is_partial_document() { return partial_document_; } + + private: + // Called by the completion callback of the document's URLLoader. + void DidOpen(int32_t result); + // Call to read data from the document's URLLoader. + void ReadMore(); + // Called by the completion callback of the document's URLLoader. + void DidRead(int32_t result); + + // If the headers have a byte-range response, writes the start and end + // positions and returns true if at least the start position was parsed. + // The end position will be set to 0 if it was not found or parsed from the + // response. + // Returns false if not even a start position could be parsed. + static bool GetByteRange(const std::string& headers, uint32* start, + uint32* end); + + // If the headers have a multi-part response, returns the boundary name. + // Otherwise returns an empty string. + static std::string GetMultiPartBoundary(const std::string& headers); + + // Called when we detect that partial document load is possible. + void LoadPartialDocument(); + // Called when we have to load full document. + void LoadFullDocument(); + // Download pending requests. + void DownloadPendingRequests(); + // Called when we complete server request and read all data from it. + void ReadComplete(); + // Creates request to download size byte of data data starting from position. + pp::URLRequestInfo GetRequest(uint32 position, uint32 size) const; + // Returns current request size in bytes. + uint32 GetRequestSize() const; + + Client* client_; + std::string url_; + pp::URLLoader loader_; + pp::CompletionCallbackFactory<DocumentLoader> loader_factory_; + ChunkStream chunk_stream_; + bool partial_document_; + bool request_pending_; + typedef std::list<std::pair<size_t, size_t> > PendingRequests; + PendingRequests pending_requests_; + char buffer_[kDefaultRequestSize]; + uint32 current_pos_; + uint32 current_chunk_size_; + uint32 current_chunk_read_; + uint32 document_size_; + bool header_request_; + bool is_multipart_; + std::string multipart_boundary_; + uint32 requests_count_; + std::map<uint32, uint32> chunk_size_table_; + std::list<std::vector<unsigned char> > chunk_buffer_; +}; + +} // namespace chrome_pdf + +#endif // PDF_DOCUMENT_LOADER_H_ diff --git a/pdf/draw_utils.cc b/pdf/draw_utils.cc new file mode 100644 index 0000000..88270dc --- /dev/null +++ b/pdf/draw_utils.cc @@ -0,0 +1,324 @@ +// Copyright (c) 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/draw_utils.h" + +#include <algorithm> +#include <math.h> +#include <vector> + +#include "base/logging.h" + +namespace chrome_pdf { + +inline uint8 GetBlue(const uint32& pixel) { + return static_cast<uint8>(pixel & 0xFF); +} + +inline uint8 GetGreen(const uint32& pixel) { + return static_cast<uint8>((pixel >> 8) & 0xFF); +} + +inline uint8 GetRed(const uint32& pixel) { + return static_cast<uint8>((pixel >> 16) & 0xFF); +} + +inline uint8 GetAlpha(const uint32& pixel) { + return static_cast<uint8>((pixel >> 24) & 0xFF); +} + +inline uint32_t MakePixel(uint8 red, uint8 green, uint8 blue, uint8 alpha) { + return (static_cast<uint32_t>(alpha) << 24) | + (static_cast<uint32_t>(red) << 16) | + (static_cast<uint32_t>(green) << 8) | + static_cast<uint32_t>(blue); +} + +inline uint8 GradientChannel(uint8 start, uint8 end, double ratio) { + double new_channel = start - (static_cast<double>(start) - end) * ratio; + if (new_channel < 0) + return 0; + if (new_channel > 255) + return 255; + return static_cast<uint8>(new_channel + 0.5); +} + +inline uint8 ProcessColor(uint8 src_color, uint8 dest_color, uint8 alpha) { + uint32 processed = static_cast<uint32>(src_color) * alpha + + static_cast<uint32>(dest_color) * (0xFF - alpha); + return static_cast<uint8>((processed / 0xFF) & 0xFF); +} + +bool AlphaBlend(const pp::ImageData& src, const pp::Rect& src_rc, + pp::ImageData* dest, const pp::Point& dest_origin, + uint8 alpha_adjustment) { + const uint32_t* src_origin_pixel = src.GetAddr32(src_rc.point()); + uint32_t* dest_origin_pixel = dest->GetAddr32(dest_origin); + + int height = src_rc.height(); + int width = src_rc.width(); + for (int y = 0; y < height; y++) { + const uint32_t* src_pixel = src_origin_pixel; + uint32_t* dest_pixel = dest_origin_pixel; + for (int x = 0; x < width; x++) { + uint8 alpha = static_cast<uint8>(static_cast<uint32_t>(alpha_adjustment) * + GetAlpha(*src_pixel) / 0xFF); + uint8 red = ProcessColor(GetRed(*src_pixel), GetRed(*dest_pixel), alpha); + uint8 green = ProcessColor(GetGreen(*src_pixel), + GetGreen(*dest_pixel), alpha); + uint8 blue = ProcessColor(GetBlue(*src_pixel), + GetBlue(*dest_pixel), alpha); + *dest_pixel = MakePixel(red, green, blue, GetAlpha(*dest_pixel)); + + src_pixel++; + dest_pixel++; + } + src_origin_pixel = reinterpret_cast<const uint32_t*>( + reinterpret_cast<const char*>(src_origin_pixel) + src.stride()); + dest_origin_pixel = reinterpret_cast<uint32_t*>( + reinterpret_cast<char*>(dest_origin_pixel) + dest->stride()); + } + return true; +} + +void GradientFill(pp::ImageData* image, const pp::Rect& rc, + uint32 start_color, uint32 end_color, bool horizontal) { + std::vector<uint32> colors; + colors.resize(horizontal ? rc.width() : rc.height()); + for (size_t i = 0; i < colors.size(); ++i) { + double ratio = static_cast<double>(i) / colors.size(); + colors[i] = MakePixel( + GradientChannel(GetRed(start_color), GetRed(end_color), ratio), + GradientChannel(GetGreen(start_color), GetGreen(end_color), ratio), + GradientChannel(GetBlue(start_color), GetBlue(end_color), ratio), + GradientChannel(GetAlpha(start_color), GetAlpha(end_color), ratio)); + } + + if (horizontal) { + const void* data = &(colors[0]); + size_t size = colors.size() * 4; + uint32_t* origin_pixel = image->GetAddr32(rc.point()); + for (int y = 0; y < rc.height(); y++) { + memcpy(origin_pixel, data, size); + origin_pixel = reinterpret_cast<uint32_t*>( + reinterpret_cast<char*>(origin_pixel) + image->stride()); + } + } else { + uint32_t* origin_pixel = image->GetAddr32(rc.point()); + for (int y = 0; y < rc.height(); y++) { + uint32_t* pixel = origin_pixel; + for (int x = 0; x < rc.width(); x++) { + *pixel = colors[y]; + pixel++; + } + origin_pixel = reinterpret_cast<uint32_t*>( + reinterpret_cast<char*>(origin_pixel) + image->stride()); + } + } +} + +void GradientFill(pp::Instance* instance, + pp::ImageData* image, + const pp::Rect& dirty_rc, + const pp::Rect& gradient_rc, + uint32 start_color, + uint32 end_color, + bool horizontal, + uint8 transparency) { + pp::Rect draw_rc = gradient_rc.Intersect(dirty_rc); + if (draw_rc.IsEmpty()) + return; + + pp::ImageData gradient(instance, PP_IMAGEDATAFORMAT_BGRA_PREMUL, + gradient_rc.size(), false); + + GradientFill(&gradient, pp::Rect(pp::Point(), gradient_rc.size()), + start_color, end_color, horizontal); + + pp::Rect copy_rc(draw_rc); + copy_rc.Offset(-gradient_rc.x(), -gradient_rc.y()); + AlphaBlend(gradient, copy_rc, image, draw_rc.point(), transparency); +} + +void CopyImage(const pp::ImageData& src, const pp::Rect& src_rc, + pp::ImageData* dest, const pp::Rect& dest_rc, + bool stretch) { + DCHECK(src_rc.width() <= dest_rc.width() && + src_rc.height() <= dest_rc.height()); + + const uint32_t* src_origin_pixel = src.GetAddr32(src_rc.point()); + uint32_t* dest_origin_pixel = dest->GetAddr32(dest_rc.point()); + if (stretch) { + double x_ratio = static_cast<double>(src_rc.width()) / dest_rc.width(); + double y_ratio = static_cast<double>(src_rc.height()) / dest_rc.height(); + int height = dest_rc.height(); + int width = dest_rc.width(); + for (int y = 0; y < height; y++) { + uint32_t* dest_pixel = dest_origin_pixel; + for (int x = 0; x < width; x++) { + uint32 src_x = static_cast<uint32>(x * x_ratio); + uint32 src_y = static_cast<uint32>(y * y_ratio); + const uint32_t* src_pixel = src.GetAddr32( + pp::Point(src_rc.x() + src_x, src_rc.y() + src_y)); + *dest_pixel = *src_pixel; + dest_pixel++; + } + dest_origin_pixel = reinterpret_cast<uint32_t*>( + reinterpret_cast<char*>(dest_origin_pixel) + dest->stride()); + } + } else { + int height = src_rc.height(); + int width_bytes = src_rc.width() * 4; + for (int y = 0; y < height; y++) { + memcpy(dest_origin_pixel, src_origin_pixel, width_bytes); + src_origin_pixel = reinterpret_cast<const uint32_t*>( + reinterpret_cast<const char*>(src_origin_pixel) + src.stride()); + dest_origin_pixel = reinterpret_cast<uint32_t*>( + reinterpret_cast<char*>(dest_origin_pixel) + dest->stride()); + } + } +} + +void FillRect(pp::ImageData* image, const pp::Rect& rc, uint32 color) { + int height = rc.height(); + if (height == 0) + return; + + // Fill in first row. + uint32_t* top_line = image->GetAddr32(rc.point()); + int width = rc.width(); + for (int x = 0; x < width; x++) + top_line[x] = color; + + // Fill in the rest of the rectangle. + int byte_width = width * 4; + uint32_t* cur_line = reinterpret_cast<uint32_t*>( + reinterpret_cast<char*>(top_line) + image->stride()); + for (int y = 1; y < height; y++) { + memcpy(cur_line, top_line, byte_width); + cur_line = reinterpret_cast<uint32_t*>( + reinterpret_cast<char*>(cur_line) + image->stride()); + } +} + +ShadowMatrix::ShadowMatrix(uint32 depth, double factor, uint32 background) + : depth_(depth), factor_(factor), background_(background) { + DCHECK(depth_ > 0); + matrix_.resize(depth_ * depth_); + + // pv - is a rounding power factor for smoothing corners. + // pv = 2.0 will make corners completely round. + const double pv = 4.0; + // pow_pv - cache to avoid recalculating pow(x, pv) every time. + std::vector<double> pow_pv(depth_, 0.0); + + double r = static_cast<double>(depth_); + double coef = 256.0 / pow(r, factor); + + for (uint32 y = 0; y < depth_; y++) { + // Since matrix is symmetrical, we can reduce the number of calculations + // by mirroring results. + for (uint32 x = 0; x <= y; x++) { + // Fill cache if needed. + if (pow_pv[x] == 0.0) + pow_pv[x] = pow(x, pv); + if (pow_pv[y] == 0.0) + pow_pv[y] = pow(y, pv); + + // v - is a value for the smoothing function. + // If x == 0 simplify calculations. + double v = (x == 0) ? y : pow(pow_pv[x] + pow_pv[y], 1 / pv); + + // Smoothing function. + // If factor == 1, smoothing will be linear from 0 to the end, + // if 0 < factor < 1, smoothing will drop faster near 0. + // if factor > 1, smoothing will drop faster near the end (depth). + double f = 256.0 - coef * pow(v, factor); + + uint8 alpha = 0; + if (f > kOpaqueAlpha) + alpha = kOpaqueAlpha; + else if (f < kTransparentAlpha) + alpha = kTransparentAlpha; + else + alpha = static_cast<uint8>(f); + + uint8 red = ProcessColor(0, GetRed(background), alpha); + uint8 green = ProcessColor(0, GetGreen(background), alpha); + uint8 blue = ProcessColor(0, GetBlue(background), alpha); + uint32 pixel = MakePixel(red, green, blue, GetAlpha(background)); + + // Mirror matrix. + matrix_[y * depth_ + x] = pixel; + matrix_[x * depth_ + y] = pixel; + } + } +} + +ShadowMatrix::~ShadowMatrix() { +} + +void PaintShadow(pp::ImageData* image, + const pp::Rect& clip_rc, + const pp::Rect& shadow_rc, + const ShadowMatrix& matrix) { + pp::Rect draw_rc = shadow_rc.Intersect(clip_rc); + if (draw_rc.IsEmpty()) + return; + + int32 depth = static_cast<int32>(matrix.depth()); + for (int32_t y = draw_rc.y(); y < draw_rc.bottom(); y++) { + for (int32_t x = draw_rc.x(); x < draw_rc.right(); x++) { + int32_t matrix_x = std::max(depth + shadow_rc.x() - x - 1, + depth - shadow_rc.right() + x); + int32_t matrix_y = std::max(depth + shadow_rc.y() - y - 1, + depth - shadow_rc.bottom() + y); + uint32_t* pixel = image->GetAddr32(pp::Point(x, y)); + + if (matrix_x < 0) + matrix_x = 0; + else if (matrix_x >= static_cast<int32>(depth)) + matrix_x = depth - 1; + + if (matrix_y < 0) + matrix_y = 0; + else if (matrix_y >= static_cast<int32>(depth)) + matrix_y = depth - 1; + + *pixel = matrix.GetValue(matrix_x, matrix_y); + } + } +} + +void DrawShadow(pp::ImageData* image, + const pp::Rect& shadow_rc, + const pp::Rect& object_rc, + const pp::Rect& clip_rc, + const ShadowMatrix& matrix) { + if (shadow_rc == object_rc) + return; // Nothing to paint. + + // Fill top part. + pp::Rect rc(shadow_rc.point(), + pp::Size(shadow_rc.width(), object_rc.y() - shadow_rc.y())); + PaintShadow(image, rc.Intersect(clip_rc), shadow_rc, matrix); + + // Fill bottom part. + rc = pp::Rect(shadow_rc.x(), object_rc.bottom(), + shadow_rc.width(), shadow_rc.bottom() - object_rc.bottom()); + PaintShadow(image, rc.Intersect(clip_rc), shadow_rc, matrix); + + // Fill left part. + rc = pp::Rect(shadow_rc.x(), object_rc.y(), + object_rc.x() - shadow_rc.x(), object_rc.height()); + PaintShadow(image, rc.Intersect(clip_rc), shadow_rc, matrix); + + // Fill right part. + rc = pp::Rect(object_rc.right(), object_rc.y(), + shadow_rc.right() - object_rc.right(), object_rc.height()); + PaintShadow(image, rc.Intersect(clip_rc), shadow_rc, matrix); +} + +} // namespace chrome_pdf + diff --git a/pdf/draw_utils.h b/pdf/draw_utils.h new file mode 100644 index 0000000..1024037 --- /dev/null +++ b/pdf/draw_utils.h @@ -0,0 +1,94 @@ +// Copyright (c) 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_DRAW_UTILS_H_ +#define PDF_DRAW_UTILS_H_ + +#include <vector> + +#include "base/basictypes.h" +#include "ppapi/cpp/image_data.h" +#include "ppapi/cpp/rect.h" + +namespace chrome_pdf { + +const uint8 kOpaqueAlpha = 0xFF; +const uint8 kTransparentAlpha = 0x00; + +bool AlphaBlend(const pp::ImageData& src, const pp::Rect& src_rc, + pp::ImageData* dest, const pp::Point& dest_origin, + uint8 alpha_adjustment); + +// Fill rectangle with gradient horizontally or vertically. Start is a color of +// top-left point of the rectangle, end color is a color of +// top-right (horizontal==true) or bottom-left (horizontal==false) point. +void GradientFill(pp::ImageData* image, + const pp::Rect& rc, + uint32 start_color, + uint32 end_color, + bool horizontal); + +// Fill dirty rectangle with gradient, where gradient color set for corners of +// gradient rectangle. Parts of the dirty rect outside of gradient rect will +// be unchanged. +void GradientFill(pp::Instance* instance, + pp::ImageData* image, + const pp::Rect& dirty_rc, + const pp::Rect& gradient_rc, + uint32 start_color, + uint32 end_color, + bool horizontal, + uint8 transparency); + +// Copy one image into another. If stretch is true, the result occupy the entire +// dest_rc. If stretch is false, dest_rc.point will be used as an origin of the +// result image. Copy will ignore all pixels with transparent alpha from the +// source image. +void CopyImage(const pp::ImageData& src, const pp::Rect& src_rc, + pp::ImageData* dest, const pp::Rect& dest_rc, + bool stretch); + +// Fill in rectangle with specified color. +void FillRect(pp::ImageData* image, const pp::Rect& rc, uint32 color); + +// Shadow Matrix contains matrix for shadow rendering. To reduce amount of +// calculations user may choose to cache matrix and reuse it if nothing changed. +class ShadowMatrix { + public: + // Matrix parameters. + // depth - how big matrix should be. Shadow will go smoothly across the + // entire matrix from black to background color. + // If factor == 1, smoothing will be linear from 0 to the end (depth), + // if 0 < factor < 1, smoothing will drop faster near 0. + // if factor > 1, smoothing will drop faster near the end (depth). + ShadowMatrix(uint32 depth, double factor, uint32 background); + + ~ShadowMatrix(); + + uint32 GetValue(int32 x, int32 y) const { return matrix_[y * depth_ + x]; } + + uint32 depth() const { return depth_; } + double factor() const { return factor_; } + uint32 background() const { return background_; } + + private: + uint32 depth_; + double factor_; + uint32 background_; + std::vector<uint32> matrix_; +}; + +// Draw shadow on the image using provided ShadowMatrix. +// shadow_rc - rectangle occupied by shadow +// object_rc - rectangle that drops the shadow +// clip_rc - clipping region +void DrawShadow(pp::ImageData* image, + const pp::Rect& shadow_rc, + const pp::Rect& object_rc, + const pp::Rect& clip_rc, + const ShadowMatrix& matrix); + +} // namespace chrome_pdf + +#endif // PDF_DRAW_UTILS_H_ diff --git a/pdf/fading_control.cc b/pdf/fading_control.cc new file mode 100644 index 0000000..7e4d8ef --- /dev/null +++ b/pdf/fading_control.cc @@ -0,0 +1,75 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/fading_control.h" + +#include <math.h> + +#include "base/logging.h" +#include "pdf/draw_utils.h" +#include "pdf/resource_consts.h" + +namespace chrome_pdf { + +FadingControl::FadingControl() + : alpha_shift_(0), timer_id_(0) { +} + +FadingControl::~FadingControl() { +} + +void FadingControl::OnTimerFired(uint32 timer_id) { + if (timer_id == timer_id_) { + int32 new_alpha = transparency() + alpha_shift_; + if (new_alpha <= kTransparentAlpha) { + Show(false, true); + OnFadeOutComplete(); + return; + } + if (new_alpha >= kOpaqueAlpha) { + AdjustTransparency(kOpaqueAlpha, true); + OnFadeInComplete(); + return; + } + + AdjustTransparency(static_cast<uint8>(new_alpha), true); + timer_id_ = owner()->ScheduleTimer(id(), kFadingTimeoutMs); + } +} + +// Fade In/Out control depending on visible flag over the time of time_ms. +void FadingControl::Fade(bool show, uint32 time_ms) { + DCHECK(time_ms != 0); + // Check if we already in the same state. + if (!visible() && !show) + return; + if (!visible() && show) { + Show(show, false); + AdjustTransparency(kTransparentAlpha, false); + OnFadeOutComplete(); + } + if (transparency() == kOpaqueAlpha && show) { + OnFadeInComplete(); + return; + } + + int delta = show ? kOpaqueAlpha - transparency() : transparency(); + double shift = + static_cast<double>(delta) * kFadingTimeoutMs / time_ms; + if (shift > delta) + alpha_shift_ = delta; + else + alpha_shift_ = static_cast<int>(ceil(shift)); + + if (alpha_shift_ == 0) + alpha_shift_ = 1; + + // If disabling, make alpha shift negative. + if (!show) + alpha_shift_ = -alpha_shift_; + + timer_id_ = owner()->ScheduleTimer(id(), kFadingTimeoutMs); +} + +} // namespace chrome_pdf diff --git a/pdf/fading_control.h b/pdf/fading_control.h new file mode 100644 index 0000000..03ac134 --- /dev/null +++ b/pdf/fading_control.h @@ -0,0 +1,32 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_FADING_CONTROL_H_ +#define PDF_FADING_CONTROL_H_ + +#include "pdf/control.h" + +namespace chrome_pdf { + +class FadingControl : public Control { + public: + FadingControl(); + virtual ~FadingControl(); + + virtual void OnTimerFired(uint32 timer_id); + + // Fade In/Out control depending on visible flag over the time of time_ms. + virtual void Fade(bool visible, uint32 time_ms); + + virtual void OnFadeInComplete() {} + virtual void OnFadeOutComplete() {} + + private: + int alpha_shift_; + uint32 timer_id_; +}; + +} // namespace chrome_pdf + +#endif // PDF_FADING_CONTROL_H_ diff --git a/pdf/fading_controls.cc b/pdf/fading_controls.cc new file mode 100644 index 0000000..8a9fd89 --- /dev/null +++ b/pdf/fading_controls.cc @@ -0,0 +1,316 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/fading_controls.h" + +#include "base/logging.h" +#include "base/stl_util.h" +#include "pdf/draw_utils.h" +#include "pdf/resource_consts.h" +#include "ppapi/cpp/input_event.h" + +namespace chrome_pdf { + +const uint32 kFadingAlphaShift = 64; +const uint32 kSplashFadingAlphaShift = 16; + +FadingControls::FadingControls() + : state_(NONE), current_transparency_(kOpaqueAlpha), fading_timer_id_(0), + current_capture_control_(kInvalidControlId), + fading_timeout_(kFadingTimeoutMs), alpha_shift_(kFadingAlphaShift), + splash_(false), splash_timeout_(0) { +} + +FadingControls::~FadingControls() { + STLDeleteElements(&controls_); +} + +bool FadingControls::CreateFadingControls( + uint32 id, const pp::Rect& rc, bool visible, + Control::Owner* owner, uint8 transparency) { + current_transparency_ = transparency; + return Control::Create(id, rc, visible, owner); +} + +void FadingControls::Paint(pp::ImageData* image_data, const pp::Rect& rc) { + // When this control is set to invisible the individual controls are not. + // So we need to check for visible() here. + if (!visible()) + return; + + std::list<Control*>::iterator iter; + for (iter = controls_.begin(); iter != controls_.end(); ++iter) { + (*iter)->Paint(image_data, rc); + } +} + +bool FadingControls::HandleEvent(const pp::InputEvent& event) { + if (!visible()) + return false; + + pp::MouseInputEvent mouse_event(event); + if (mouse_event.is_null()) + return NotifyControls(event); + + pp::Point pt = mouse_event.GetPosition(); + + bool is_mouse_click = + mouse_event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN || + mouse_event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP; + + if (rect().Contains(pt)) { + CancelSplashMode(); + FadeIn(); + + // Eat mouse click if are invisible or just fading in. + // That prevents accidental clicks on the controls for touch devices. + bool eat_mouse_click = + (state_ == FADING_IN || current_transparency_ == kTransparentAlpha); + if (eat_mouse_click && is_mouse_click && + mouse_event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT) + return true; // Eat this event here. + } + + if ((!rect().Contains(pt)) || + event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE) { + if (!splash_) + FadeOut(); + pp::MouseInputEvent event_leave(pp::MouseInputEvent( + owner()->GetInstance(), + PP_INPUTEVENT_TYPE_MOUSELEAVE, + event.GetTimeStamp(), + event.GetModifiers(), + mouse_event.GetButton(), + mouse_event.GetPosition(), + mouse_event.GetClickCount(), + mouse_event.GetMovement())); + return NotifyControls(event_leave); + } + + return NotifyControls(event); +} + +void FadingControls::OnTimerFired(uint32 timer_id) { + if (timer_id == fading_timer_id_) { + int32 current_alpha = static_cast<int32>(current_transparency_); + if (state_ == FADING_IN) + current_alpha += alpha_shift_; + else if (state_ == FADING_OUT) + current_alpha -= alpha_shift_; + + if (current_alpha >= kOpaqueAlpha) { + state_ = NONE; + current_alpha = kOpaqueAlpha; + } else if (current_alpha <= kTransparentAlpha) { + state_ = NONE; + current_alpha = kTransparentAlpha; + } + current_transparency_ = static_cast<uint8>(current_alpha); + + // Invalidate controls with new alpha transparency. + std::list<Control*>::iterator iter; + for (iter = controls_.begin(); iter != controls_.end(); ++iter) { + // We are going to invalidate the whole FadingControls area, to + // allow simultaneous drawing. + (*iter)->AdjustTransparency(current_transparency_, false); + } + owner()->Invalidate(id(), GetControlsRect()); + + if (state_ != NONE) // Fading still in progress. + fading_timer_id_ = owner()->ScheduleTimer(id(), fading_timeout_); + else + OnFadingComplete(); + } else { + // Dispatch timer to controls. + std::list<Control*>::iterator iter; + for (iter = controls_.begin(); iter != controls_.end(); ++iter) { + (*iter)->OnTimerFired(timer_id); + } + } +} + +void FadingControls::EventCaptureReleased() { + if (current_capture_control_ != kInvalidControlId) { + // Remove previous catpure. + Control* ctrl = GetControl(current_capture_control_); + if (ctrl) + ctrl->EventCaptureReleased(); + } +} + +void FadingControls::MoveBy(const pp::Point& offset, bool invalidate) { + std::list<Control*>::iterator iter; + for (iter = controls_.begin(); iter != controls_.end(); ++iter) { + // We invalidate entire FadingControl later if needed. + (*iter)->MoveBy(offset, false); + } + Control::MoveBy(offset, invalidate); +} + +void FadingControls::OnEvent(uint32 control_id, uint32 event_id, void* data) { + owner()->OnEvent(control_id, event_id, data); +} + +void FadingControls::Invalidate(uint32 control_id, const pp::Rect& rc) { + owner()->Invalidate(control_id, rc); +} + +uint32 FadingControls::ScheduleTimer(uint32 control_id, uint32 timeout_ms) { + // TODO(gene): implement timer routine properly. + NOTIMPLEMENTED(); + //owner()->ScheduleTimer(control_id); + return 0; +} + +void FadingControls::SetEventCapture(uint32 control_id, bool set_capture) { + if (control_id == current_capture_control_) { + if (!set_capture) // Remove event capture. + current_capture_control_ = kInvalidControlId; + } else { + EventCaptureReleased(); + current_capture_control_ = control_id; + } +} + +void FadingControls::SetCursor(uint32 control_id, + PP_CursorType_Dev cursor_type) { + owner()->SetCursor(control_id, cursor_type); +} + +pp::Instance* FadingControls::GetInstance() { + return owner()->GetInstance(); +} + +bool FadingControls::AddControl(Control* control) { + DCHECK(control); + if (control->owner() != this) + return false; + if (!rect().Contains(control->rect())) + return false; + + control->AdjustTransparency(current_transparency_, false); + controls_.push_back(control); + return true; +} + +void FadingControls::RemoveControl(uint32 control_id) { + if (current_capture_control_ == control_id) { + current_capture_control_ = kInvalidControlId; + } + std::list<Control*>::iterator iter; + for (iter = controls_.begin(); iter != controls_.end(); ++iter) { + if ((*iter)->id() == control_id) { + delete (*iter); + controls_.erase(iter); + break; + } + } +} + +Control* FadingControls::GetControl(uint32 id) { + std::list<Control*>::iterator iter; + for (iter = controls_.begin(); iter != controls_.end(); ++iter) { + if ((*iter)->id() == id) + return *iter; + } + return NULL; +} + +pp::Rect FadingControls::GetControlsRect() { + pp::Rect rc; + std::list<Control*>::iterator iter; + for (iter = controls_.begin(); iter != controls_.end(); ++iter) { + rc = rc.Union((*iter)->rect()); + } + return rc; +} + +bool FadingControls::ExpandLeft(int offset) { + pp::Rect rc = rect(); + rc.set_width(rc.width() + offset); + rc.set_x(rc.x() - offset); + if (!rc.Contains(GetControlsRect())) + return false; + // No need to invalidate since we are expanding triggering area only. + SetRect(rc, false); + return true; +} + +void FadingControls::Splash(uint32 time_ms) { + splash_ = true; + splash_timeout_ = time_ms; + alpha_shift_ = kSplashFadingAlphaShift; + FadeIn(); +} + +bool FadingControls::NotifyControls(const pp::InputEvent& event) { + // First pass event to a control that current capture is set to. + Control* ctrl = GetControl(current_capture_control_); + if (ctrl) { + if (ctrl->HandleEvent(event)) + return true; + } + + std::list<Control*>::iterator iter; + for (iter = controls_.begin(); iter != controls_.end(); ++iter) { + // Now pass event to all control except control with capture, + // since we already passed to it above. + if ((*iter) != ctrl && (*iter)->HandleEvent(event)) + return true; + } + return false; +} + +void FadingControls::FadeIn() { + bool already_visible = + (state_ == NONE && current_transparency_ == kOpaqueAlpha); + if (state_ != FADING_IN && !already_visible) { + state_ = FADING_IN; + fading_timer_id_ = owner()->ScheduleTimer(id(), fading_timeout_); + } + if (already_visible) + OnFadingComplete(); +} + +void FadingControls::FadeOut() { + bool already_invisible = + (state_ == NONE && current_transparency_ == kTransparentAlpha); + if (state_ != FADING_OUT && !already_invisible) { + state_ = FADING_OUT; + fading_timer_id_ = owner()->ScheduleTimer(id(), fading_timeout_); + } + if (already_invisible) + OnFadingComplete(); +} + +void FadingControls::OnFadingComplete() { + DCHECK(current_transparency_ == kOpaqueAlpha || + current_transparency_ == kTransparentAlpha); + // In the splash mode following states are possible: + // Fade-in complete: splash_==true, splash_timeout_ != 0 + // We need to schedule timer for splash_timeout_. + // Splash timeout complete: splash_==true, splash_timeout_ == 0 + // We need to fade out still using splash settings. + // Fade-out complete: current_transparency_ == kTransparentAlpha + // We need to cancel splash mode and go back to normal settings. + if (splash_) { + if (current_transparency_ == kOpaqueAlpha) { + if (splash_timeout_) { + fading_timer_id_ = owner()->ScheduleTimer(id(), splash_timeout_); + splash_timeout_ = 0; + } else { + FadeOut(); + } + } else { + CancelSplashMode(); + } + } +} + +void FadingControls::CancelSplashMode() { + splash_ = false; + alpha_shift_ = kFadingAlphaShift; +} + +} // namespace chrome_pdf diff --git a/pdf/fading_controls.h b/pdf/fading_controls.h new file mode 100644 index 0000000..532464b --- /dev/null +++ b/pdf/fading_controls.h @@ -0,0 +1,84 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_FADING_CONTROLS_H_ +#define PDF_FADING_CONTROLS_H_ + +#include <list> + +#include "pdf/control.h" + +namespace chrome_pdf { + +class FadingControls : public Control, + public ControlOwner { + public: + enum FadingState { + NONE, + FADING_IN, + FADING_OUT + }; + + FadingControls(); + virtual ~FadingControls(); + virtual bool CreateFadingControls( + uint32 id, const pp::Rect& rc, bool visible, + Control::Owner* delegate, uint8 transparency); + + // Control interface. + virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc); + virtual bool HandleEvent(const pp::InputEvent& event); + virtual void OnTimerFired(uint32 timer_id); + virtual void EventCaptureReleased(); + virtual void MoveBy(const pp::Point& offset, bool invalidate); + + // ControlOwner interface. + virtual void OnEvent(uint32 control_id, uint32 event_id, void* data); + virtual void Invalidate(uint32 control_id, const pp::Rect& rc); + virtual uint32 ScheduleTimer(uint32 control_id, uint32 timeout_ms); + virtual void SetEventCapture(uint32 control_id, bool set_capture); + virtual void SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type); + virtual pp::Instance* GetInstance(); + + // FadingControls interface + // This function takes ownership of the control, and will destoy it + // when control is destroyed. + // Input control MUST be located inside FadingControls boundaries, and has + // this instance of FadingControls as a delegate. + virtual bool AddControl(Control* control); + virtual void RemoveControl(uint32 control_id); + virtual Control* GetControl(uint32 id); + virtual pp::Rect GetControlsRect(); + + // Expand/Shrink area which triggers inner control appearance to the left. + virtual bool ExpandLeft(int offset); + + // Fade-in, then show controls for time_ms, and then fade-out. Any mouse + // event in this control area will interrupt splash mode. + virtual void Splash(uint32 time_ms); + + uint8 current_transparency() const { return current_transparency_; } + + private: + bool NotifyControls(const pp::InputEvent& event); + void FadeIn(); + void FadeOut(); + void OnFadingComplete(); + void CancelSplashMode(); + + std::list<Control*> controls_; + FadingState state_; + uint8 current_transparency_; + uint32 fading_timer_id_; + uint32 current_capture_control_; + uint32 fading_timeout_; + uint32 alpha_shift_; + bool splash_; + uint32 splash_timeout_; +}; + +} // namespace chrome_pdf + +#endif // PDF_FADING_CONTROLS_H_ + diff --git a/pdf/instance.cc b/pdf/instance.cc new file mode 100644 index 0000000..a17db57 --- /dev/null +++ b/pdf/instance.cc @@ -0,0 +1,2719 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/instance.h" + +#include <algorithm> // for min() +#define _USE_MATH_DEFINES // for M_PI +#include <cmath> // for log() and pow() +#include <math.h> +#include <list> + +#include "base/json/json_reader.h" +#include "base/json/json_writer.h" +#include "base/logging.h" +#include "base/strings/string_number_conversions.h" +#include "base/strings/string_split.h" +#include "base/strings/string_util.h" +#include "base/values.h" +#include "chrome/browser/chrome_page_zoom_constants.h" +#include "chrome/common/content_restriction.h" +#include "content/public/common/page_zoom.h" +#include "net/base/escape.h" +#include "pdf/draw_utils.h" +#include "pdf/number_image_generator.h" +#include "pdf/pdf.h" +#include "pdf/resource_consts.h" +#include "ppapi/c/dev/ppb_cursor_control_dev.h" +#include "ppapi/c/pp_errors.h" +#include "ppapi/c/pp_rect.h" +#include "ppapi/c/private/ppp_pdf.h" +#include "ppapi/c/trusted/ppb_url_loader_trusted.h" +#include "ppapi/cpp/core.h" +#include "ppapi/cpp/dev/font_dev.h" +#include "ppapi/cpp/dev/memory_dev.h" +#include "ppapi/cpp/dev/text_input_dev.h" +#include "ppapi/cpp/module.h" +#include "ppapi/cpp/point.h" +#include "ppapi/cpp/private/pdf.h" +#include "ppapi/cpp/rect.h" +#include "ppapi/cpp/resource.h" +#include "ppapi/cpp/url_request_info.h" +#include "ui/events/keycodes/keyboard_codes.h" + +#if defined(OS_MACOSX) +#include "base/mac/mac_util.h" +#endif + +namespace chrome_pdf { + +struct ToolbarButtonInfo { + uint32 id; + Button::ButtonStyle style; + PP_ResourceImage normal; + PP_ResourceImage highlighted; + PP_ResourceImage pressed; +}; + +namespace { + +// Uncomment following #define to enable thumbnails. +// #define ENABLE_THUMBNAILS + +const uint32 kToolbarSplashTimeoutMs = 6000; +const uint32 kMessageTextColor = 0xFF575757; +const uint32 kMessageTextSize = 22; +const uint32 kProgressFadeTimeoutMs = 250; +const uint32 kProgressDelayTimeoutMs = 1000; +const uint32 kAutoScrollTimeoutMs = 50; +const double kAutoScrollFactor = 0.2; + +// Javascript methods. +const char* kJSAccessibility = "accessibility"; +const char* kJSDocumentLoadComplete = "documentLoadComplete"; +const char* kJSGetHeight = "getHeight"; +const char* kJSGetHorizontalScrollbarThickness = + "getHorizontalScrollbarThickness"; +const char* kJSGetPageLocationNormalized = "getPageLocationNormalized"; +const char* kJSGetVerticalScrollbarThickness = "getVerticalScrollbarThickness"; +const char* kJSGetWidth = "getWidth"; +const char* kJSGetZoomLevel = "getZoomLevel"; +const char* kJSGoToPage = "goToPage"; +const char* kJSGrayscale = "grayscale"; +const char* kJSLoadPreviewPage = "loadPreviewPage"; +const char* kJSOnLoad = "onload"; +const char* kJSOnPluginSizeChanged = "onPluginSizeChanged"; +const char* kJSOnScroll = "onScroll"; +const char* kJSPageXOffset = "pageXOffset"; +const char* kJSPageYOffset = "pageYOffset"; +const char* kJSPrintPreviewPageCount = "printPreviewPageCount"; +const char* kJSReload = "reload"; +const char* kJSRemovePrintButton = "removePrintButton"; +const char* kJSResetPrintPreviewUrl = "resetPrintPreviewUrl"; +const char* kJSSendKeyEvent = "sendKeyEvent"; +const char* kJSSetPageNumbers = "setPageNumbers"; +const char* kJSSetPageXOffset = "setPageXOffset"; +const char* kJSSetPageYOffset = "setPageYOffset"; +const char* kJSSetZoomLevel = "setZoomLevel"; +const char* kJSZoomFitToHeight = "fitToHeight"; +const char* kJSZoomFitToWidth = "fitToWidth"; +const char* kJSZoomIn = "zoomIn"; +const char* kJSZoomOut = "zoomOut"; + +// URL reference parameters. +// For more possible parameters, see RFC 3778 and the "PDF Open Parameters" +// document from Adobe. +const char kDelimiters[] = "#&"; +const char kNamedDest[] = "nameddest"; +const char kPage[] = "page"; + +const char kChromePrint[] = "chrome://print/"; + +// Dictionary Value key names for the document accessibility info +const char kAccessibleNumberOfPages[] = "numberOfPages"; +const char kAccessibleLoaded[] = "loaded"; +const char kAccessibleCopyable[] = "copyable"; + +const ToolbarButtonInfo kPDFToolbarButtons[] = { + { kFitToPageButtonId, Button::BUTTON_STATE, + PP_RESOURCEIMAGE_PDF_BUTTON_FTP, + PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED }, + { kFitToWidthButtonId, Button::BUTTON_STATE, + PP_RESOURCEIMAGE_PDF_BUTTON_FTW, + PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED }, + { kZoomOutButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED }, + { kZoomInButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED }, + { kSaveButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_SAVE, + PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED }, + { kPrintButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_PRINT, + PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_PRESSED }, +}; + +const ToolbarButtonInfo kPDFNoPrintToolbarButtons[] = { + { kFitToPageButtonId, Button::BUTTON_STATE, + PP_RESOURCEIMAGE_PDF_BUTTON_FTP, + PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED }, + { kFitToWidthButtonId, Button::BUTTON_STATE, + PP_RESOURCEIMAGE_PDF_BUTTON_FTW, + PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED }, + { kZoomOutButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED }, + { kZoomInButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_PRESSED }, + { kSaveButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_SAVE, + PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_SAVE_PRESSED }, + { kPrintButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED, + PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED, + PP_RESOURCEIMAGE_PDF_BUTTON_PRINT_DISABLED } +}; + +const ToolbarButtonInfo kPrintPreviewToolbarButtons[] = { + { kFitToPageButtonId, Button::BUTTON_STATE, + PP_RESOURCEIMAGE_PDF_BUTTON_FTP, + PP_RESOURCEIMAGE_PDF_BUTTON_FTP_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_FTP_PRESSED }, + { kFitToWidthButtonId, Button::BUTTON_STATE, + PP_RESOURCEIMAGE_PDF_BUTTON_FTW, + PP_RESOURCEIMAGE_PDF_BUTTON_FTW_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_FTW_PRESSED }, + { kZoomOutButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMOUT_PRESSED }, + { kZoomInButtonId, Button::BUTTON_CLICKABLE, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_HOVER, + PP_RESOURCEIMAGE_PDF_BUTTON_ZOOMIN_END_PRESSED }, +}; + +static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1; + +PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) { + pp::Var var; + void* object = + pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface); + if (object) + var = static_cast<Instance*>(object)->GetLinkAtPosition(pp::Point(point)); + return var.Detach(); +} + +void Transform(PP_Instance instance, PP_PrivatePageTransformType type) { + void* object = + pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface); + if (object) { + Instance* obj_instance = static_cast<Instance*>(object); + switch (type) { + case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW: + obj_instance->RotateClockwise(); + break; + case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW: + obj_instance->RotateCounterclockwise(); + break; + } + } +} + +const PPP_Pdf ppp_private = { + &GetLinkAtPosition, + &Transform +}; + +int ExtractPrintPreviewPageIndex(const std::string& src_url) { + // Sample |src_url| format: chrome://print/id/page_index/print.pdf + std::vector<std::string> url_substr; + base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr); + if (url_substr.size() != 3) + return -1; + + if (url_substr[2] != "print.pdf") + return -1; + + int page_index = 0; + if (!base::StringToInt(url_substr[1], &page_index)) + return -1; + return page_index; +} + +bool IsPrintPreviewUrl(const std::string& url) { + return url.substr(0, strlen(kChromePrint)) == kChromePrint; +} + +void ScalePoint(float scale, pp::Point* point) { + point->set_x(static_cast<int>(point->x() * scale)); + point->set_y(static_cast<int>(point->y() * scale)); +} + +void ScaleRect(float scale, pp::Rect* rect) { + int left = static_cast<int>(floorf(rect->x() * scale)); + int top = static_cast<int>(floorf(rect->y() * scale)); + int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale)); + int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale)); + rect->SetRect(left, top, right - left, bottom - top); +} + +template<class T> +T ClipToRange(T value, T lower_boundary, T upper_boundary) { + DCHECK(lower_boundary <= upper_boundary); + return std::max<T>(lower_boundary, std::min<T>(value, upper_boundary)); +} + +} // namespace + +Instance::Instance(PP_Instance instance) + : pp::InstancePrivate(instance), + pp::Find_Private(this), + pp::Printing_Dev(this), + pp::Selection_Dev(this), + pp::WidgetClient_Dev(this), + pp::Zoom_Dev(this), + cursor_(PP_CURSORTYPE_POINTER), + timer_pending_(false), + current_timer_id_(0), + zoom_(1.0), + device_scale_(1.0), + printing_enabled_(true), + hidpi_enabled_(false), + full_(IsFullFrame()), + zoom_mode_(full_ ? ZOOM_AUTO : ZOOM_SCALE), + did_call_start_loading_(false), + is_autoscroll_(false), + scrollbar_thickness_(-1), + scrollbar_reserved_thickness_(-1), + current_tb_info_(NULL), + current_tb_info_size_(0), + paint_manager_(this, this, true), + delayed_progress_timer_id_(0), + first_paint_(true), + painted_first_page_(false), + show_page_indicator_(false), + document_load_state_(LOAD_STATE_LOADING), + preview_document_load_state_(LOAD_STATE_COMPLETE), + told_browser_about_unsupported_feature_(false), + print_preview_page_count_(0) { + loader_factory_.Initialize(this); + timer_factory_.Initialize(this); + form_factory_.Initialize(this); + print_callback_factory_.Initialize(this); + engine_.reset(PDFEngine::Create(this)); + pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private); + AddPerInstanceObject(kPPPPdfInterface, this); + + RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE); + RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_WHEEL); + RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD); + RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH); +} + +Instance::~Instance() { + RemovePerInstanceObject(kPPPPdfInterface, this); +} + +bool Instance::Init(uint32_t argc, const char* argn[], const char* argv[]) { + // For now, we hide HiDPI support behind a flag. + if (pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_HIDPI)) + hidpi_enabled_ = true; + + printing_enabled_ = pp::PDF::IsFeatureEnabled(this, PP_PDFFEATURE_PRINTING); + if (printing_enabled_) { + CreateToolbar(kPDFToolbarButtons, arraysize(kPDFToolbarButtons)); + } else { + CreateToolbar(kPDFNoPrintToolbarButtons, + arraysize(kPDFNoPrintToolbarButtons)); + } + + CreateProgressBar(); + + // Load autoscroll anchor image. + autoscroll_anchor_ = + CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON); + +#ifdef ENABLE_THUMBNAILS + CreateThumbnails(); +#endif + const char* url = NULL; + for (uint32_t i = 0; i < argc; ++i) { + if (strcmp(argn[i], "src") == 0) { + url = argv[i]; + break; + } + } + + if (!url) + return false; + + CreatePageIndicator(IsPrintPreviewUrl(url)); + + if (!full_) { + // For PDFs embedded in a frame, we don't get the data automatically like we + // do for full-frame loads. Start loading the data manually. + LoadUrl(url); + } + + ZoomLimitsChanged(kMinZoom, kMaxZoom); + + text_input_.reset(new pp::TextInput_Dev(this)); + + url_ = url; + return engine_->New(url); +} + +bool Instance::HandleDocumentLoad(const pp::URLLoader& loader) { + delayed_progress_timer_id_ = ScheduleTimer(kProgressBarId, + kProgressDelayTimeoutMs); + return engine_->HandleDocumentLoad(loader); +} + +bool Instance::HandleInputEvent(const pp::InputEvent& event) { + // To simplify things, convert the event into device coordinates if it is + // a mouse event. + pp::InputEvent event_device_res(event); + { + pp::MouseInputEvent mouse_event(event); + if (!mouse_event.is_null()) { + pp::Point point = mouse_event.GetPosition(); + pp::Point movement = mouse_event.GetMovement(); + ScalePoint(device_scale_, &point); + ScalePoint(device_scale_, &movement); + mouse_event = pp::MouseInputEvent( + this, + event.GetType(), + event.GetTimeStamp(), + event.GetModifiers(), + mouse_event.GetButton(), + point, + mouse_event.GetClickCount(), + movement); + event_device_res = mouse_event; + } + } + + // Check if we need to go to autoscroll mode. + if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE && + (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN)) { + pp::MouseInputEvent mouse_event(event_device_res); + pp::Point pos = mouse_event.GetPosition(); + EnableAutoscroll(pos); + UpdateCursor(CalculateAutoscroll(pos)); + return true; + } else { + // Quit autoscrolling on any other event. + DisableAutoscroll(); + } + +#ifdef ENABLE_THUMBNAILS + if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSELEAVE) + thumbnails_.SlideOut(); + + if (thumbnails_.HandleEvent(event_device_res)) + return true; +#endif + + if (toolbar_->HandleEvent(event_device_res)) + return true; + +#ifdef ENABLE_THUMBNAILS + if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE) { + pp::MouseInputEvent mouse_event(event); + pp::Point pt = mouse_event.GetPosition(); + pp::Rect v_scrollbar_rc; + v_scrollbar_->GetLocation(&v_scrollbar_rc); + // There is a bug (https://bugs.webkit.org/show_bug.cgi?id=45208) + // in the webkit that makes event.u.mouse.button + // equal to PP_INPUTEVENT_MOUSEBUTTON_LEFT, even when no button is pressed. + // To work around this issue we use modifier for now, and will switch + // to button once the bug is fixed and webkit got merged back to our tree. + if (v_scrollbar_rc.Contains(pt) && + (event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN)) { + thumbnails_.SlideIn(); + } + + // When scrollbar is in the scrolling mode we should display thumbnails + // even the mouse is outside the thumbnail and scrollbar areas. + // If mouse is outside plugin area, we are still getting mouse move events + // while scrolling. See bug description for details: + // http://code.google.com/p/chromium/issues/detail?id=56444 + if (!v_scrollbar_rc.Contains(pt) && thumbnails_.visible() && + !(event.GetModifiers() & PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN) && + !thumbnails_.rect().Contains(pt)) { + thumbnails_.SlideOut(); + } + } +#endif + + // Need to pass the event to the engine first, since if we're over an edit + // control we want it to get keyboard events (like space) instead of the + // scrollbar. + // TODO: will have to offset the mouse coordinates once we support bidi and + // there could be scrollbars on the left. + pp::InputEvent offset_event(event_device_res); + bool try_engine_first = true; + switch (offset_event.GetType()) { + case PP_INPUTEVENT_TYPE_MOUSEDOWN: + case PP_INPUTEVENT_TYPE_MOUSEUP: + case PP_INPUTEVENT_TYPE_MOUSEMOVE: + case PP_INPUTEVENT_TYPE_MOUSEENTER: + case PP_INPUTEVENT_TYPE_MOUSELEAVE: { + pp::MouseInputEvent mouse_event(event_device_res); + pp::MouseInputEvent mouse_event_dip(event); + pp::Point point = mouse_event.GetPosition(); + point.set_x(point.x() - available_area_.x()); + offset_event = pp::MouseInputEvent( + this, + event.GetType(), + event.GetTimeStamp(), + event.GetModifiers(), + mouse_event.GetButton(), + point, + mouse_event.GetClickCount(), + mouse_event.GetMovement()); + if (!engine_->IsSelecting()) { + if (!IsOverlayScrollbar() && + !available_area_.Contains(mouse_event.GetPosition())) { + try_engine_first = false; + } else if (IsOverlayScrollbar()) { + pp::Rect temp; + if ((v_scrollbar_.get() && v_scrollbar_->GetLocation(&temp) && + temp.Contains(mouse_event_dip.GetPosition())) || + (h_scrollbar_.get() && h_scrollbar_->GetLocation(&temp) && + temp.Contains(mouse_event_dip.GetPosition()))) { + try_engine_first = false; + } + } + } + break; + } + default: + break; + } + if (try_engine_first && engine_->HandleEvent(offset_event)) + return true; + + // Left/Right arrows should scroll to the beginning of the Prev/Next page if + // there is no horizontal scroll bar. + // If fit-to-height, PgDown/PgUp should scroll to the beginning of the + // Prev/Next page. + if (v_scrollbar_.get() && event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN) { + pp::KeyboardInputEvent keyboard_event(event); + bool page_down = + (!h_scrollbar_.get() && + keyboard_event.GetKeyCode() == ui::VKEY_RIGHT) || + (zoom_mode_ == ZOOM_FIT_TO_PAGE && + keyboard_event.GetKeyCode() == ui::VKEY_NEXT); + bool page_up = + (!h_scrollbar_.get() && + keyboard_event.GetKeyCode() == ui::VKEY_LEFT) || + (zoom_mode_ == ZOOM_FIT_TO_PAGE && + keyboard_event.GetKeyCode() == ui::VKEY_PRIOR); + + if (page_down) { + int page = engine_->GetFirstVisiblePage(); + // Engine calculates visible page including delimiter to the page size. + // We need to check here if the page itself is completely out of view and + // scroll to the next one in that case. + if (engine_->GetPageRect(page).bottom() * zoom_ <= + v_scrollbar_->GetValue()) + page++; + ScrollToPage(page + 1); + UpdateCursor(PP_CURSORTYPE_POINTER); + return true; + } else if (page_up) { + int page = engine_->GetFirstVisiblePage(); + if (engine_->GetPageRect(page).y() * zoom_ >= v_scrollbar_->GetValue()) + page--; + ScrollToPage(page); + UpdateCursor(PP_CURSORTYPE_POINTER); + return true; + } + } + + if (v_scrollbar_.get() && v_scrollbar_->HandleEvent(event)) { + UpdateCursor(PP_CURSORTYPE_POINTER); + return true; + } + + if (h_scrollbar_.get() && h_scrollbar_->HandleEvent(event)) { + UpdateCursor(PP_CURSORTYPE_POINTER); + return true; + } + + if (timer_pending_ && + (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEUP || + event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE)) { + timer_factory_.CancelAll(); + timer_pending_ = false; + } else if (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEMOVE && + engine_->IsSelecting()) { + bool set_timer = false; + pp::MouseInputEvent mouse_event(event); + if (v_scrollbar_.get() && + (mouse_event.GetPosition().y() <= 0 || + mouse_event.GetPosition().y() >= (plugin_dip_size_.height() - 1))) { + v_scrollbar_->ScrollBy( + PP_SCROLLBY_LINE, mouse_event.GetPosition().y() >= 0 ? 1: -1); + set_timer = true; + } + if (h_scrollbar_.get() && + (mouse_event.GetPosition().x() <= 0 || + mouse_event.GetPosition().x() >= (plugin_dip_size_.width() - 1))) { + h_scrollbar_->ScrollBy(PP_SCROLLBY_LINE, + mouse_event.GetPosition().x() >= 0 ? 1: -1); + set_timer = true; + } + + if (set_timer) { + last_mouse_event_ = pp::MouseInputEvent(event); + + pp::CompletionCallback callback = + timer_factory_.NewCallback(&Instance::OnTimerFired); + pp::Module::Get()->core()->CallOnMainThread(kDragTimerMs, callback); + timer_pending_ = true; + } + } + + if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN && + event.GetModifiers() & kDefaultKeyModifier) { + pp::KeyboardInputEvent keyboard_event(event); + switch (keyboard_event.GetKeyCode()) { + case 'A': + engine_->SelectAll(); + return true; + } + } + + // Return true for unhandled clicks so the plugin takes focus. + return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN); +} + +void Instance::DidChangeView(const pp::View& view) { + pp::Rect view_rect(view.GetRect()); + float device_scale = 1.0f; + float old_device_scale = device_scale_; + if (hidpi_enabled_) + device_scale = view.GetDeviceScale(); + pp::Size view_device_size(view_rect.width() * device_scale, + view_rect.height() * device_scale); + if (view_device_size == plugin_size_ && device_scale == device_scale_) + return; // We don't care about the position, only the size. + + image_data_ = pp::ImageData(); + device_scale_ = device_scale; + plugin_dip_size_ = view_rect.size(); + plugin_size_ = view_device_size; + + paint_manager_.SetSize(view_device_size, device_scale_); + + image_data_ = pp::ImageData(this, + PP_IMAGEDATAFORMAT_BGRA_PREMUL, + plugin_size_, + false); + if (image_data_.is_null()) { + DCHECK(plugin_size_.IsEmpty()); + return; + } + + // View dimensions changed, disable autoscroll (if it was enabled). + DisableAutoscroll(); + + OnGeometryChanged(zoom_, old_device_scale); +} + +pp::Var Instance::GetInstanceObject() { + if (instance_object_.is_undefined()) { + PDFScriptableObject* object = new PDFScriptableObject(this); + // The pp::Var takes ownership of object here. + instance_object_ = pp::VarPrivate(this, object); + } + + return instance_object_; +} + +pp::Var Instance::GetLinkAtPosition(const pp::Point& point) { + pp::Point offset_point(point); + ScalePoint(device_scale_, &offset_point); + offset_point.set_x(offset_point.x() - available_area_.x()); + return engine_->GetLinkAtPosition(offset_point); +} + +pp::Var Instance::GetSelectedText(bool html) { + if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY)) + return pp::Var(); + return engine_->GetSelectedText(); +} + +void Instance::InvalidateWidget(pp::Widget_Dev widget, + const pp::Rect& dirty_rect) { + if (v_scrollbar_.get() && *v_scrollbar_ == widget) { + if (!image_data_.is_null()) + v_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_); + } else if (h_scrollbar_.get() && *h_scrollbar_ == widget) { + if (!image_data_.is_null()) + h_scrollbar_->Paint(dirty_rect.pp_rect(), &image_data_); + } else { + // Possible to hit this condition since sometimes the scrollbar codes posts + // a task to do something later, and we could have deleted our reference in + // the meantime. + return; + } + + pp::Rect dirty_rect_scaled = dirty_rect; + ScaleRect(device_scale_, &dirty_rect_scaled); + paint_manager_.InvalidateRect(dirty_rect_scaled); +} + +void Instance::ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar, + uint32_t value) { + value = GetScaled(value); + if (v_scrollbar_.get() && *v_scrollbar_ == scrollbar) { + engine_->ScrolledToYPosition(value); + pp::Rect rc; + v_scrollbar_->GetLocation(&rc); + int32 doc_height = GetDocumentPixelHeight(); + doc_height -= GetScaled(rc.height()); +#ifdef ENABLE_THUMBNAILS + if (thumbnails_.visible()) { + thumbnails_.SetPosition(value, doc_height, true); + } +#endif + pp::Point origin( + plugin_size_.width() - page_indicator_.rect().width() - + GetScaled(GetScrollbarReservedThickness()), + page_indicator_.GetYPosition(value, doc_height, plugin_size_.height())); + page_indicator_.MoveTo(origin, page_indicator_.visible()); + } else if (h_scrollbar_.get() && *h_scrollbar_ == scrollbar) { + engine_->ScrolledToXPosition(value); + } +} + +void Instance::ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar, + bool overlay) { + scrollbar_reserved_thickness_ = overlay ? 0 : scrollbar_thickness_; + OnGeometryChanged(zoom_, device_scale_); +} + +uint32_t Instance::QuerySupportedPrintOutputFormats() { + return engine_->QuerySupportedPrintOutputFormats(); +} + +int32_t Instance::PrintBegin(const PP_PrintSettings_Dev& print_settings) { + // For us num_pages is always equal to the number of pages in the PDF + // document irrespective of the printable area. + int32_t ret = engine_->GetNumberOfPages(); + if (!ret) + return 0; + + uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats(); + if ((print_settings.format & supported_formats) == 0) + return 0; + + print_settings_.is_printing = true; + print_settings_.pepper_print_settings = print_settings; + engine_->PrintBegin(); + return ret; +} + +pp::Resource Instance::PrintPages( + const PP_PrintPageNumberRange_Dev* page_ranges, + uint32_t page_range_count) { + if (!print_settings_.is_printing) + return pp::Resource(); + + print_settings_.print_pages_called_ = true; + return engine_->PrintPages(page_ranges, page_range_count, + print_settings_.pepper_print_settings); +} + +void Instance::PrintEnd() { + if (print_settings_.print_pages_called_) + UserMetricsRecordAction("PDF.PrintPage"); + print_settings_.Clear(); + engine_->PrintEnd(); +} + +bool Instance::IsPrintScalingDisabled() { + return !engine_->GetPrintScaling(); +} + +bool Instance::StartFind(const std::string& text, bool case_sensitive) { + engine_->StartFind(text.c_str(), case_sensitive); + return true; +} + +void Instance::SelectFindResult(bool forward) { + engine_->SelectFindResult(forward); +} + +void Instance::StopFind() { + engine_->StopFind(); +} + +void Instance::Zoom(double scale, bool text_only) { + UserMetricsRecordAction("PDF.ZoomFromBrowser"); + SetZoom(ZOOM_SCALE, scale); +} + +void Instance::ZoomChanged(double factor) { + if (full_) + Zoom_Dev::ZoomChanged(factor); +} + +void Instance::OnPaint(const std::vector<pp::Rect>& paint_rects, + std::vector<PaintManager::ReadyRect>* ready, + std::vector<pp::Rect>* pending) { + if (image_data_.is_null()) { + DCHECK(plugin_size_.IsEmpty()); + return; + } + if (first_paint_) { + first_paint_ = false; + pp::Rect rect = pp::Rect(pp::Point(), plugin_size_); + unsigned int color = kBackgroundColorA << 24 | + kBackgroundColorR << 16 | + kBackgroundColorG << 8 | + kBackgroundColorB; + FillRect(rect, color); + ready->push_back(PaintManager::ReadyRect(rect, image_data_, true)); + *pending = paint_rects; + return; + } + + engine_->PrePaint(); + + for (size_t i = 0; i < paint_rects.size(); i++) { + // Intersect with plugin area since there could be pending invalidates from + // when the plugin area was larger. + pp::Rect rect = + paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_)); + if (rect.IsEmpty()) + continue; + + pp::Rect pdf_rect = available_area_.Intersect(rect); + if (!pdf_rect.IsEmpty()) { + pdf_rect.Offset(available_area_.x() * -1, 0); + + std::vector<pp::Rect> pdf_ready; + std::vector<pp::Rect> pdf_pending; + engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending); + for (size_t j = 0; j < pdf_ready.size(); ++j) { + pdf_ready[j].Offset(available_area_.point()); + ready->push_back( + PaintManager::ReadyRect(pdf_ready[j], image_data_, false)); + } + for (size_t j = 0; j < pdf_pending.size(); ++j) { + pdf_pending[j].Offset(available_area_.point()); + pending->push_back(pdf_pending[j]); + } + } + + for (size_t j = 0; j < background_parts_.size(); ++j) { + pp::Rect intersection = background_parts_[j].location.Intersect(rect); + if (!intersection.IsEmpty()) { + FillRect(intersection, background_parts_[j].color); + ready->push_back( + PaintManager::ReadyRect(intersection, image_data_, false)); + } + } + + if (document_load_state_ == LOAD_STATE_FAILED) { + pp::Point top_center; + top_center.set_x(plugin_size_.width() / 2); + top_center.set_y(plugin_size_.height() / 2); + DrawText(top_center, PP_RESOURCESTRING_PDFLOAD_FAILED); + } + +#ifdef ENABLE_THUMBNAILS + thumbnails_.Paint(&image_data_, rect); +#endif + } + + engine_->PostPaint(); + + // Must paint scrollbars after the background parts, in case we have an + // overlay scrollbar that's over the background. We also do this in a separate + // loop because the scrollbar painting logic uses the signal of whether there + // are pending paints or not to figure out if it should draw right away or + // not. + for (size_t i = 0; i < paint_rects.size(); i++) { + PaintIfWidgetIntersects(h_scrollbar_.get(), paint_rects[i], ready, pending); + PaintIfWidgetIntersects(v_scrollbar_.get(), paint_rects[i], ready, pending); + } + + if (progress_bar_.visible()) + PaintOverlayControl(&progress_bar_, &image_data_, ready); + + if (page_indicator_.visible()) + PaintOverlayControl(&page_indicator_, &image_data_, ready); + + if (toolbar_->current_transparency() != kTransparentAlpha) + PaintOverlayControl(toolbar_.get(), &image_data_, ready); + + // Paint autoscroll anchor if needed. + if (is_autoscroll_) { + size_t limit = ready->size(); + for (size_t i = 0; i < limit; i++) { + pp::Rect anchor_rect = autoscroll_rect_.Intersect((*ready)[i].rect); + if (!anchor_rect.IsEmpty()) { + pp::Rect draw_rc = pp::Rect( + pp::Point(anchor_rect.x() - autoscroll_rect_.x(), + anchor_rect.y() - autoscroll_rect_.y()), + anchor_rect.size()); + // Paint autoscroll anchor. + AlphaBlend(autoscroll_anchor_, draw_rc, + &image_data_, anchor_rect.point(), kOpaqueAlpha); + } + } + } +} + +void Instance::PaintOverlayControl( + Control* ctrl, + pp::ImageData* image_data, + std::vector<PaintManager::ReadyRect>* ready) { + // Make sure that we only paint overlay controls over an area that's ready, + // i.e. not pending. Otherwise we'll mark the control rect as ready and + // it'll overwrite the pdf region. + std::list<pp::Rect> ctrl_rects; + for (size_t i = 0; i < ready->size(); i++) { + pp::Rect rc = ctrl->rect().Intersect((*ready)[i].rect); + if (!rc.IsEmpty()) + ctrl_rects.push_back(rc); + } + + if (!ctrl_rects.empty()) { + ctrl->PaintMultipleRects(image_data, ctrl_rects); + + std::list<pp::Rect>::iterator iter; + for (iter = ctrl_rects.begin(); iter != ctrl_rects.end(); ++iter) { + ready->push_back(PaintManager::ReadyRect(*iter, *image_data, false)); + } + } +} + +void Instance::DidOpen(int32_t result) { + if (result == PP_OK) { + engine_->HandleDocumentLoad(embed_loader_); + } else if (result != PP_ERROR_ABORTED) { // Can happen in tests. + NOTREACHED(); + } +} + +void Instance::DidOpenPreview(int32_t result) { + if (result == PP_OK) { + preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this))); + preview_engine_->HandleDocumentLoad(embed_preview_loader_); + } else { + NOTREACHED(); + } +} + +void Instance::PaintIfWidgetIntersects( + pp::Widget_Dev* widget, + const pp::Rect& rect, + std::vector<PaintManager::ReadyRect>* ready, + std::vector<pp::Rect>* pending) { + if (!widget) + return; + + pp::Rect location; + if (!widget->GetLocation(&location)) + return; + + ScaleRect(device_scale_, &location); + location = location.Intersect(rect); + if (location.IsEmpty()) + return; + + if (IsOverlayScrollbar()) { + // If we're using overlay scrollbars, and there are pending paints under the + // scrollbar, don't update the scrollbar instantly. While it would be nice, + // we would need to double buffer the plugin area in order to make this + // work. This is because we'd need to always have a copy of what the pdf + // under the scrollbar looks like, and additionally we couldn't paint the + // pdf under the scrollbar if it's ready until we got the preceding flush. + // So in practice, it would make painting slower and introduce extra buffer + // copies for the general case. + for (size_t i = 0; i < pending->size(); ++i) { + if ((*pending)[i].Intersects(location)) + return; + } + + // Even if none of the pending paints are under the scrollbar, we never want + // to paint it if it's over the pdf if there are other pending paints. + // Otherwise different parts of the pdf plugin would display at different + // scroll offsets. + if (!pending->empty() && available_area_.Intersects(rect)) { + pending->push_back(location); + return; + } + } + + pp::Rect location_dip = location; + ScaleRect(1.0f / device_scale_, &location_dip); + + DCHECK(!image_data_.is_null()); + widget->Paint(location_dip, &image_data_); + + // Re-scale the rectangle from DIPs to device pixels, so we ensure that we + // don't miss any pixels due to rounding outwards in ScaleRect. + location = location_dip; + ScaleRect(device_scale_, &location); + + ready->push_back(PaintManager::ReadyRect(location, image_data_, true)); +} + +void Instance::OnTimerFired(int32_t) { + HandleInputEvent(last_mouse_event_); +} + +void Instance::OnClientTimerFired(int32_t id) { + engine_->OnCallback(id); +} + +void Instance::OnControlTimerFired(int32_t, + const uint32& control_id, + const uint32& timer_id) { + if (control_id == toolbar_->id()) { + toolbar_->OnTimerFired(timer_id); + } else if (control_id == progress_bar_.id()) { + if (timer_id == delayed_progress_timer_id_) { + if (document_load_state_ == LOAD_STATE_LOADING && + !progress_bar_.visible()) { + progress_bar_.Fade(true, kProgressFadeTimeoutMs); + } + delayed_progress_timer_id_ = 0; + } else { + progress_bar_.OnTimerFired(timer_id); + } + } else if (control_id == kAutoScrollId) { + if (is_autoscroll_) { + if (autoscroll_x_ != 0 && h_scrollbar_.get()) { + h_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_x_); + } + if (autoscroll_y_ != 0 && v_scrollbar_.get()) { + v_scrollbar_->ScrollBy(PP_SCROLLBY_PIXEL, autoscroll_y_); + } + + // Reschedule timer. + ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs); + } + } else if (control_id == kPageIndicatorId) { + page_indicator_.OnTimerFired(timer_id); + } +#ifdef ENABLE_THUMBNAILS + else if (control_id == thumbnails_.id()) { + thumbnails_.OnTimerFired(timer_id); + } +#endif +} + +void Instance::CalculateBackgroundParts() { + background_parts_.clear(); + int v_scrollbar_thickness = + GetScaled(v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0); + int h_scrollbar_thickness = + GetScaled(h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0); + int width_without_scrollbar = std::max( + plugin_size_.width() - v_scrollbar_thickness, 0); + int height_without_scrollbar = std::max( + plugin_size_.height() - h_scrollbar_thickness, 0); + int left_width = available_area_.x(); + int right_start = available_area_.right(); + int right_width = abs(width_without_scrollbar - available_area_.right()); + int bottom = std::min(available_area_.bottom(), height_without_scrollbar); + + // Add the left, right, and bottom rectangles. Note: we assume only + // horizontal centering. + BackgroundPart part; + part.color = kBackgroundColorA << 24 | + kBackgroundColorR << 16 | + kBackgroundColorG << 8 | + kBackgroundColorB; + part.location = pp::Rect(0, 0, left_width, bottom); + if (!part.location.IsEmpty()) + background_parts_.push_back(part); + part.location = pp::Rect(right_start, 0, right_width, bottom); + if (!part.location.IsEmpty()) + background_parts_.push_back(part); + part.location = pp::Rect( + 0, bottom, width_without_scrollbar, height_without_scrollbar - bottom); + if (!part.location.IsEmpty()) + background_parts_.push_back(part); + + if (h_scrollbar_thickness +#if defined(OS_MACOSX) + || +#else + && +#endif + v_scrollbar_thickness) { + part.color = 0xFFFFFFFF; + part.location = pp::Rect(plugin_size_.width() - v_scrollbar_thickness, + plugin_size_.height() - h_scrollbar_thickness, + h_scrollbar_thickness, + v_scrollbar_thickness); + background_parts_.push_back(part); + } +} + +int Instance::GetDocumentPixelWidth() const { + return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_)); +} + +int Instance::GetDocumentPixelHeight() const { + return static_cast<int>(ceil(document_size_.height() * + zoom_ * + device_scale_)); +} + +void Instance::FillRect(const pp::Rect& rect, unsigned int color) { + DCHECK(!image_data_.is_null() || rect.IsEmpty()); + unsigned int* buffer_start = static_cast<unsigned int*>(image_data_.data()); + int stride = image_data_.stride(); + unsigned int* ptr = buffer_start + rect.y() * stride / 4 + rect.x(); + int height = rect.height(); + int width = rect.width(); + for (int y = 0; y < height; ++y) { + for (int x = 0; x < width; ++x) + *(ptr + x) = color; + ptr += stride /4; + } +} + +void Instance::DocumentSizeUpdated(const pp::Size& size) { + document_size_ = size; + + OnGeometryChanged(zoom_, device_scale_); +} + +void Instance::Invalidate(const pp::Rect& rect) { + pp::Rect offset_rect(rect); + offset_rect.Offset(available_area_.point()); + paint_manager_.InvalidateRect(offset_rect); +} + +void Instance::Scroll(const pp::Point& point) { + pp::Rect scroll_area = available_area_; + if (IsOverlayScrollbar()) { + pp::Rect rc; + if (h_scrollbar_.get()) { + h_scrollbar_->GetLocation(&rc); + ScaleRect(device_scale_, &rc); + if (scroll_area.bottom() > rc.y()) { + scroll_area.set_height(rc.y() - scroll_area.y()); + paint_manager_.InvalidateRect(rc); + } + } + if (v_scrollbar_.get()) { + v_scrollbar_->GetLocation(&rc); + ScaleRect(device_scale_, &rc); + if (scroll_area.right() > rc.x()) { + scroll_area.set_width(rc.x() - scroll_area.x()); + paint_manager_.InvalidateRect(rc); + } + } + } + paint_manager_.ScrollRect(scroll_area, point); + + if (toolbar_->current_transparency() != kTransparentAlpha) + paint_manager_.InvalidateRect(toolbar_->GetControlsRect()); + + if (progress_bar_.visible()) + paint_manager_.InvalidateRect(progress_bar_.rect()); + + if (is_autoscroll_) + paint_manager_.InvalidateRect(autoscroll_rect_); + + if (show_page_indicator_) { + page_indicator_.set_current_page(GetPageNumberToDisplay()); + page_indicator_.Splash(); + } + + if (page_indicator_.visible()) + paint_manager_.InvalidateRect(page_indicator_.rect()); + + if (on_scroll_callback_.is_string()) + ExecuteScript(on_scroll_callback_); +} + +void Instance::ScrollToX(int position) { + if (!h_scrollbar_.get()) { + NOTREACHED(); + return; + } + int position_dip = static_cast<int>(position / device_scale_); + h_scrollbar_->SetValue(position_dip); +} + +void Instance::ScrollToY(int position) { + if (!v_scrollbar_.get()) { + NOTREACHED(); + return; + } + int position_dip = static_cast<int>(position / device_scale_); + v_scrollbar_->SetValue(ClipToRange(position_dip, 0, valid_v_range_)); +} + +void Instance::ScrollToPage(int page) { + if (!v_scrollbar_.get()) + return; + + if (engine_->GetNumberOfPages() == 0) + return; + + int index = ClipToRange(page, 0, engine_->GetNumberOfPages() - 1); + pp::Rect rect = engine_->GetPageRect(index); + // If we are trying to scroll pass the last page, + // scroll to the end of the last page. + int position = index < page ? rect.bottom() : rect.y(); + ScrollToY(position * zoom_ * device_scale_); +} + +void Instance::NavigateTo(const std::string& url, bool open_in_new_tab) { + std::string url_copy(url); + + // Empty |url_copy| is ok, and will effectively be a reload. + // Skip the code below so an empty URL does not turn into "http://", which + // will cause GURL to fail a DCHECK. + if (!url_copy.empty()) { + // If there's no scheme, add http. + if (url_copy.find("://") == std::string::npos && + url_copy.find("mailto:") == std::string::npos) { + url_copy = std::string("http://") + url_copy; + } + // Make sure |url_copy| starts with a valid scheme. + if (url_copy.find("http://") != 0 && + url_copy.find("https://") != 0 && + url_copy.find("ftp://") != 0 && + url_copy.find("mailto:") != 0) { + return; + } + // Make sure |url_copy| is not only a scheme. + if (url_copy == "http://" || + url_copy == "https://" || + url_copy == "ftp://" || + url_copy == "mailto:") { + return; + } + } + if (open_in_new_tab) { + GetWindowObject().Call("open", url_copy); + } else { + GetWindowObject().GetProperty("top").GetProperty("location"). + SetProperty("href", url_copy); + } +} + +void Instance::UpdateCursor(PP_CursorType_Dev cursor) { + if (cursor == cursor_) + return; + cursor_ = cursor; + + const PPB_CursorControl_Dev* cursor_interface = + reinterpret_cast<const PPB_CursorControl_Dev*>( + pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE)); + if (!cursor_interface) { + NOTREACHED(); + return; + } + + cursor_interface->SetCursor( + pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL); +} + +void Instance::UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) { + if (!v_scrollbar_.get()) + return; + + float inverse_scale = 1.0f / device_scale_; + std::vector<pp::Rect> scaled_tickmarks = tickmarks; + for (size_t i = 0; i < scaled_tickmarks.size(); i++) { + ScaleRect(inverse_scale, &scaled_tickmarks[i]); + } + + v_scrollbar_->SetTickMarks( + scaled_tickmarks.empty() ? NULL : &scaled_tickmarks[0], tickmarks.size()); +} + +void Instance::NotifyNumberOfFindResultsChanged(int total, bool final_result) { + NumberOfFindResultsChanged(total, final_result); +} + +void Instance::NotifySelectedFindResultChanged(int current_find_index) { + SelectedFindResultChanged(current_find_index); +} + +void Instance::OnEvent(uint32 control_id, uint32 event_id, void* data) { + if (event_id == Button::EVENT_ID_BUTTON_CLICKED || + event_id == Button::EVENT_ID_BUTTON_STATE_CHANGED) { + switch (control_id) { + case kFitToPageButtonId: + UserMetricsRecordAction("PDF.FitToPageButton"); + SetZoom(ZOOM_FIT_TO_PAGE, 0); + ZoomChanged(zoom_); + break; + case kFitToWidthButtonId: + UserMetricsRecordAction("PDF.FitToWidthButton"); + SetZoom(ZOOM_FIT_TO_WIDTH, 0); + ZoomChanged(zoom_); + break; + case kZoomOutButtonId: + case kZoomInButtonId: + UserMetricsRecordAction(control_id == kZoomOutButtonId ? + "PDF.ZoomOutButton" : "PDF.ZoomInButton"); + SetZoom(ZOOM_SCALE, CalculateZoom(control_id)); + ZoomChanged(zoom_); + break; + case kSaveButtonId: + UserMetricsRecordAction("PDF.SaveButton"); + SaveAs(); + break; + case kPrintButtonId: + UserMetricsRecordAction("PDF.PrintButton"); + Print(); + break; + } + } + if (control_id == kThumbnailsId && + event_id == ThumbnailControl::EVENT_ID_THUMBNAIL_SELECTED) { + int page = *static_cast<int*>(data); + pp::Rect page_rc(engine_->GetPageRect(page)); + ScrollToY(static_cast<int>(page_rc.y() * zoom_ * device_scale_)); + } +} + +void Instance::Invalidate(uint32 control_id, const pp::Rect& rc) { + paint_manager_.InvalidateRect(rc); +} + +uint32 Instance::ScheduleTimer(uint32 control_id, uint32 timeout_ms) { + current_timer_id_++; + pp::CompletionCallback callback = + timer_factory_.NewCallback(&Instance::OnControlTimerFired, + control_id, + current_timer_id_); + pp::Module::Get()->core()->CallOnMainThread(timeout_ms, callback); + return current_timer_id_; +} + +void Instance::SetEventCapture(uint32 control_id, bool set_capture) { + // TODO(gene): set event capture here. +} + +void Instance::SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type) { + UpdateCursor(cursor_type); +} + +pp::Instance* Instance::GetInstance() { + return this; +} + +void Instance::GetDocumentPassword( + pp::CompletionCallbackWithOutput<pp::Var> callback) { + std::string message(GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD)); + pp::Var result = pp::PDF::ModalPromptForPassword(this, message); + *callback.output() = result.pp_var(); + callback.Run(PP_OK); +} + +void Instance::Alert(const std::string& message) { + GetWindowObject().Call("alert", message); +} + +bool Instance::Confirm(const std::string& message) { + pp::Var result = GetWindowObject().Call("confirm", message); + return result.is_bool() ? result.AsBool() : false; +} + +std::string Instance::Prompt(const std::string& question, + const std::string& default_answer) { + pp::Var result = GetWindowObject().Call("prompt", question, default_answer); + return result.is_string() ? result.AsString() : std::string(); +} + +std::string Instance::GetURL() { + return url_; +} + +void Instance::Email(const std::string& to, + const std::string& cc, + const std::string& bcc, + const std::string& subject, + const std::string& body) { + std::string javascript = + "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) + + "?cc=" + net::EscapeUrlEncodedData(cc, false) + + "&bcc=" + net::EscapeUrlEncodedData(bcc, false) + + "&subject=" + net::EscapeUrlEncodedData(subject, false) + + "&body=" + net::EscapeUrlEncodedData(body, false) + + "';var temp = window.open(href, '_blank', " + + "'width=1,height=1');if(temp) temp.close();"; + ExecuteScript(javascript); +} + +void Instance::Print() { + if (!printing_enabled_ || + (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) && + !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) { + return; + } + + pp::CompletionCallback callback = + print_callback_factory_.NewCallback(&Instance::OnPrint); + pp::Module::Get()->core()->CallOnMainThread(0, callback); +} + +void Instance::OnPrint(int32_t) { + pp::PDF::Print(this); +} + +void Instance::SaveAs() { + pp::PDF::SaveAs(this); +} + +void Instance::SubmitForm(const std::string& url, + const void* data, + int length) { + pp::URLRequestInfo request(this); + request.SetURL(url); + request.SetMethod("POST"); + request.AppendDataToBody(reinterpret_cast<const char*>(data), length); + + pp::CompletionCallback callback = + form_factory_.NewCallback(&Instance::FormDidOpen); + form_loader_ = CreateURLLoaderInternal(); + int rv = form_loader_.Open(request, callback); + if (rv != PP_OK_COMPLETIONPENDING) + callback.Run(rv); +} + +void Instance::FormDidOpen(int32_t result) { + // TODO: inform the user of success/failure. + if (result != PP_OK) { + NOTREACHED(); + } +} + +std::string Instance::ShowFileSelectionDialog() { + // Seems like very low priority to implement, since the pdf has no way to get + // the file data anyways. Javascript doesn't let you do this synchronously. + NOTREACHED(); + return std::string(); +} + +pp::URLLoader Instance::CreateURLLoader() { + if (full_) { + if (!did_call_start_loading_) { + did_call_start_loading_ = true; + pp::PDF::DidStartLoading(this); + } + + // Disable save and print until the document is fully loaded, since they + // would generate an incomplete document. Need to do this each time we + // call DidStartLoading since that resets the content restrictions. + pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE | + CONTENT_RESTRICTION_PRINT); + } + + return CreateURLLoaderInternal(); +} + +void Instance::ScheduleCallback(int id, int delay_in_ms) { + pp::CompletionCallback callback = + timer_factory_.NewCallback(&Instance::OnClientTimerFired); + pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id); +} + +void Instance::SearchString(const base::char16* string, + const base::char16* term, + bool case_sensitive, + std::vector<SearchStringResult>* results) { + if (!pp::PDF::IsAvailable()) { + NOTREACHED(); + return; + } + + PP_PrivateFindResult* pp_results; + int count = 0; + pp::PDF::SearchString( + this, + reinterpret_cast<const unsigned short*>(string), + reinterpret_cast<const unsigned short*>(term), + case_sensitive, + &pp_results, + &count); + + results->resize(count); + for (int i = 0; i < count; ++i) { + (*results)[i].start_index = pp_results[i].start_index; + (*results)[i].length = pp_results[i].length; + } + + pp::Memory_Dev memory; + memory.MemFree(pp_results); +} + +void Instance::DocumentPaintOccurred() { + if (painted_first_page_) + return; + + painted_first_page_ = true; + UpdateToolbarPosition(false); + toolbar_->Splash(kToolbarSplashTimeoutMs); + + if (engine_->GetNumberOfPages() > 1) + show_page_indicator_ = true; + else + show_page_indicator_ = false; + + if (v_scrollbar_.get() && show_page_indicator_) { + page_indicator_.set_current_page(GetPageNumberToDisplay()); + page_indicator_.Splash(kToolbarSplashTimeoutMs, + kPageIndicatorInitialFadeTimeoutMs); + } +} + +void Instance::DocumentLoadComplete(int page_count) { + // Clear focus state for OSK. + FormTextFieldFocusChange(false); + + // Update progress control. + if (progress_bar_.visible()) + progress_bar_.Fade(false, kProgressFadeTimeoutMs); + + DCHECK(document_load_state_ == LOAD_STATE_LOADING); + document_load_state_ = LOAD_STATE_COMPLETE; + UserMetricsRecordAction("PDF.LoadSuccess"); + if (on_load_callback_.is_string()) + ExecuteScript(on_load_callback_); + // Note: If we are in print preview mode on_load_callback_ might call + // ScrollTo{X|Y}() and we don't want to scroll again and override it. + // #page=N is not supported in Print Preview. + if (!IsPrintPreview()) { + int initial_page = GetInitialPage(url_); + if (initial_page >= 0) + ScrollToPage(initial_page); + } + + if (!full_) + return; + if (!pp::PDF::IsAvailable()) + return; + + if (did_call_start_loading_) { + pp::PDF::DidStopLoading(this); + did_call_start_loading_ = false; + } + + int content_restrictions = + CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE; + if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY)) + content_restrictions |= CONTENT_RESTRICTION_COPY; + + if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) && + !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) { + printing_enabled_ = false; + if (current_tb_info_ == kPDFToolbarButtons) { + // Remove Print button. + CreateToolbar(kPDFNoPrintToolbarButtons, + arraysize(kPDFNoPrintToolbarButtons)); + UpdateToolbarPosition(false); + Invalidate(pp::Rect(plugin_size_)); + } + } + + pp::PDF::SetContentRestriction(this, content_restrictions); + + pp::PDF::HistogramPDFPageCount(this, page_count); +} + +void Instance::RotateClockwise() { + engine_->RotateClockwise(); +} + +void Instance::RotateCounterclockwise() { + engine_->RotateCounterclockwise(); +} + +void Instance::PreviewDocumentLoadComplete() { + if (preview_document_load_state_ != LOAD_STATE_LOADING || + preview_pages_info_.empty()) { + return; + } + + preview_document_load_state_ = LOAD_STATE_COMPLETE; + + int dest_page_index = preview_pages_info_.front().second; + int src_page_index = + ExtractPrintPreviewPageIndex(preview_pages_info_.front().first); + if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get()) + engine_->AppendPage(preview_engine_.get(), dest_page_index); + + preview_pages_info_.pop(); + // |print_preview_page_count_| is not updated yet. Do not load any + // other preview pages till we get this information. + if (print_preview_page_count_ == 0) + return; + + if (preview_pages_info_.size()) + LoadAvailablePreviewPage(); +} + +void Instance::DocumentLoadFailed() { + DCHECK(document_load_state_ == LOAD_STATE_LOADING); + UserMetricsRecordAction("PDF.LoadFailure"); + + // Hide progress control. + progress_bar_.Fade(false, kProgressFadeTimeoutMs); + + if (did_call_start_loading_) { + pp::PDF::DidStopLoading(this); + did_call_start_loading_ = false; + } + + document_load_state_ = LOAD_STATE_FAILED; + paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_)); +} + +void Instance::PreviewDocumentLoadFailed() { + UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure"); + if (preview_document_load_state_ != LOAD_STATE_LOADING || + preview_pages_info_.empty()) { + return; + } + + preview_document_load_state_ = LOAD_STATE_FAILED; + preview_pages_info_.pop(); + + if (preview_pages_info_.size()) + LoadAvailablePreviewPage(); +} + +pp::Instance* Instance::GetPluginInstance() { + return GetInstance(); +} + +void Instance::DocumentHasUnsupportedFeature(const std::string& feature) { + std::string metric("PDF_Unsupported_"); + metric += feature; + if (!unsupported_features_reported_.count(metric)) { + unsupported_features_reported_.insert(metric); + UserMetricsRecordAction(metric); + } + + // Since we use an info bar, only do this for full frame plugins.. + if (!full_) + return; + + if (told_browser_about_unsupported_feature_) + return; + told_browser_about_unsupported_feature_ = true; + + pp::PDF::HasUnsupportedFeature(this); +} + +void Instance::DocumentLoadProgress(uint32 available, uint32 doc_size) { + double progress = 0.0; + if (doc_size == 0) { + // Document size is unknown. Use heuristics. + // We'll make progress logarithmic from 0 to 100M. + static const double kFactor = log(100000000.0) / 100.0; + if (available > 0) { + progress = log(static_cast<double>(available)) / kFactor; + if (progress > 100.0) + progress = 100.0; + } + } else { + progress = 100.0 * static_cast<double>(available) / doc_size; + } + progress_bar_.SetProgress(progress); +} + +void Instance::FormTextFieldFocusChange(bool in_focus) { + if (!text_input_.get()) + return; + if (in_focus) + text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT); + else + text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE); +} + +// Called by PDFScriptableObject. +bool Instance::HasScriptableMethod(const pp::Var& method, pp::Var* exception) { + std::string method_str = method.AsString(); + return (method_str == kJSAccessibility || + method_str == kJSDocumentLoadComplete || + method_str == kJSGetHeight || + method_str == kJSGetHorizontalScrollbarThickness || + method_str == kJSGetPageLocationNormalized || + method_str == kJSGetVerticalScrollbarThickness || + method_str == kJSGetWidth || + method_str == kJSGetZoomLevel || + method_str == kJSGoToPage || + method_str == kJSGrayscale || + method_str == kJSLoadPreviewPage || + method_str == kJSOnLoad || + method_str == kJSOnPluginSizeChanged || + method_str == kJSOnScroll || + method_str == kJSPageXOffset || + method_str == kJSPageYOffset || + method_str == kJSPrintPreviewPageCount || + method_str == kJSReload || + method_str == kJSRemovePrintButton || + method_str == kJSResetPrintPreviewUrl || + method_str == kJSSendKeyEvent || + method_str == kJSSetPageNumbers || + method_str == kJSSetPageXOffset || + method_str == kJSSetPageYOffset || + method_str == kJSSetZoomLevel || + method_str == kJSZoomFitToHeight || + method_str == kJSZoomFitToWidth || + method_str == kJSZoomIn || + method_str == kJSZoomOut); +} + +pp::Var Instance::CallScriptableMethod(const pp::Var& method, + const std::vector<pp::Var>& args, + pp::Var* exception) { + std::string method_str = method.AsString(); + if (method_str == kJSGrayscale) { + if (args.size() == 1 && args[0].is_bool()) { + engine_->SetGrayscale(args[0].AsBool()); + // Redraw + paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_)); +#ifdef ENABLE_THUMBNAILS + if (thumbnails_.visible()) + thumbnails_.Show(true, true); +#endif + return pp::Var(true); + } + return pp::Var(false); + } + if (method_str == kJSOnLoad) { + if (args.size() == 1 && args[0].is_string()) { + on_load_callback_ = args[0]; + return pp::Var(true); + } + return pp::Var(false); + } + if (method_str == kJSOnScroll) { + if (args.size() == 1 && args[0].is_string()) { + on_scroll_callback_ = args[0]; + return pp::Var(true); + } + return pp::Var(false); + } + if (method_str == kJSOnPluginSizeChanged) { + if (args.size() == 1 && args[0].is_string()) { + on_plugin_size_changed_callback_ = args[0]; + return pp::Var(true); + } + return pp::Var(false); + } + if (method_str == kJSReload) { + document_load_state_ = LOAD_STATE_LOADING; + if (!full_) + LoadUrl(url_); + preview_engine_.reset(); + print_preview_page_count_ = 0; + engine_.reset(PDFEngine::Create(this)); + engine_->New(url_.c_str()); +#ifdef ENABLE_THUMBNAILS + thumbnails_.ResetEngine(engine_.get()); +#endif + return pp::Var(); + } + if (method_str == kJSResetPrintPreviewUrl) { + if (args.size() == 1 && args[0].is_string()) { + url_ = args[0].AsString(); + preview_pages_info_ = std::queue<PreviewPageInfo>(); + preview_document_load_state_ = LOAD_STATE_COMPLETE; + } + return pp::Var(); + } + if (method_str == kJSZoomFitToHeight) { + SetZoom(ZOOM_FIT_TO_PAGE, 0); + return pp::Var(); + } + if (method_str == kJSZoomFitToWidth) { + SetZoom(ZOOM_FIT_TO_WIDTH, 0); + return pp::Var(); + } + if (method_str == kJSZoomIn) { + SetZoom(ZOOM_SCALE, CalculateZoom(kZoomInButtonId)); + return pp::Var(); + } + if (method_str == kJSZoomOut) { + SetZoom(ZOOM_SCALE, CalculateZoom(kZoomOutButtonId)); + return pp::Var(); + } + if (method_str == kJSSetZoomLevel) { + if (args.size() == 1 && args[0].is_double()) + SetZoom(ZOOM_SCALE, args[0].AsDouble()); + return pp::Var(); + } + if (method_str == kJSGetZoomLevel) { + return pp::Var(zoom_); + } + if (method_str == kJSGetHeight) { + return pp::Var(plugin_size_.height()); + } + if (method_str == kJSGetWidth) { + return pp::Var(plugin_size_.width()); + } + if (method_str == kJSGetHorizontalScrollbarThickness) { + return pp::Var( + h_scrollbar_.get() ? GetScrollbarReservedThickness() : 0); + } + if (method_str == kJSGetVerticalScrollbarThickness) { + return pp::Var( + v_scrollbar_.get() ? GetScrollbarReservedThickness() : 0); + } + if (method_str == kJSDocumentLoadComplete) { + return pp::Var((document_load_state_ != LOAD_STATE_LOADING)); + } + if (method_str == kJSPageYOffset) { + return pp::Var(static_cast<int32_t>( + v_scrollbar_.get() ? v_scrollbar_->GetValue() : 0)); + } + if (method_str == kJSSetPageYOffset) { + if (args.size() == 1 && args[0].is_number() && v_scrollbar_.get()) + ScrollToY(GetScaled(args[0].AsInt())); + return pp::Var(); + } + if (method_str == kJSPageXOffset) { + return pp::Var(static_cast<int32_t>( + h_scrollbar_.get() ? h_scrollbar_->GetValue() : 0)); + } + if (method_str == kJSSetPageXOffset) { + if (args.size() == 1 && args[0].is_number() && h_scrollbar_.get()) + ScrollToX(GetScaled(args[0].AsInt())); + return pp::Var(); + } + if (method_str == kJSRemovePrintButton) { + CreateToolbar(kPrintPreviewToolbarButtons, + arraysize(kPrintPreviewToolbarButtons)); + UpdateToolbarPosition(false); + Invalidate(pp::Rect(plugin_size_)); + return pp::Var(); + } + if (method_str == kJSGoToPage) { + if (args.size() == 1 && args[0].is_string()) { + ScrollToPage(atoi(args[0].AsString().c_str())); + } + return pp::Var(); + } + if (method_str == kJSAccessibility) { + if (args.size() == 0) { + base::DictionaryValue node; + node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages()); + node.SetBoolean(kAccessibleLoaded, + document_load_state_ != LOAD_STATE_LOADING); + bool has_permissions = + engine_->HasPermission(PDFEngine::PERMISSION_COPY) || + engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE); + node.SetBoolean(kAccessibleCopyable, has_permissions); + std::string json; + base::JSONWriter::Write(&node, &json); + return pp::Var(json); + } else if (args[0].is_number()) { + return pp::Var(engine_->GetPageAsJSON(args[0].AsInt())); + } + } + if (method_str == kJSPrintPreviewPageCount) { + if (args.size() == 1 && args[0].is_number()) + SetPrintPreviewMode(args[0].AsInt()); + return pp::Var(); + } + if (method_str == kJSLoadPreviewPage) { + if (args.size() == 2 && args[0].is_string() && args[1].is_number()) + ProcessPreviewPageInfo(args[0].AsString(), args[1].AsInt()); + return pp::Var(); + } + if (method_str == kJSGetPageLocationNormalized) { + const size_t kMaxLength = 30; + char location_info[kMaxLength]; + int page_idx = engine_->GetMostVisiblePage(); + if (page_idx < 0) + return pp::Var(std::string()); + pp::Rect rect = engine_->GetPageContentsRect(page_idx); + int v_scrollbar_reserved_thickness = + v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0; + + rect.set_x(rect.x() + ((plugin_size_.width() - + v_scrollbar_reserved_thickness - available_area_.width()) / 2)); + base::snprintf(location_info, + kMaxLength, + "%0.4f;%0.4f;%0.4f;%0.4f;", + rect.x() / static_cast<float>(plugin_size_.width()), + rect.y() / static_cast<float>(plugin_size_.height()), + rect.width() / static_cast<float>(plugin_size_.width()), + rect.height()/ static_cast<float>(plugin_size_.height())); + return pp::Var(std::string(location_info)); + } + if (method_str == kJSSetPageNumbers) { + if (args.size() != 1 || !args[0].is_string()) + return pp::Var(); + const int num_pages_signed = engine_->GetNumberOfPages(); + if (num_pages_signed <= 0) + return pp::Var(); + scoped_ptr<base::ListValue> page_ranges(static_cast<base::ListValue*>( + base::JSONReader::Read(args[0].AsString(), false))); + const size_t num_pages = static_cast<size_t>(num_pages_signed); + if (!page_ranges.get() || page_ranges->GetSize() != num_pages) + return pp::Var(); + + std::vector<int> print_preview_page_numbers; + for (size_t index = 0; index < num_pages; ++index) { + int page_number = 0; // |page_number| is 1-based. + if (!page_ranges->GetInteger(index, &page_number) || page_number < 1) + return pp::Var(); + print_preview_page_numbers.push_back(page_number); + } + print_preview_page_numbers_ = print_preview_page_numbers; + page_indicator_.set_current_page(GetPageNumberToDisplay()); + return pp::Var(); + } + // This is here to work around https://bugs.webkit.org/show_bug.cgi?id=16735. + // In JS, creating a synthetic keyboard event and dispatching it always + // result in a keycode of 0. + if (method_str == kJSSendKeyEvent) { + if (args.size() == 1 && args[0].is_number()) { + pp::KeyboardInputEvent event( + this, // instance + PP_INPUTEVENT_TYPE_KEYDOWN, // HandleInputEvent only care about this. + 0, // timestamp, not used for kbd events. + 0, // no modifiers. + args[0].AsInt(), // keycode. + pp::Var()); // no char text needed. + HandleInputEvent(event); + } + } + return pp::Var(); +} + +void Instance::OnGeometryChanged(double old_zoom, float old_device_scale) { + bool force_no_horizontal_scrollbar = false; + int scrollbar_thickness = GetScrollbarThickness(); + + if (old_device_scale != device_scale_) { + // Change in device scale forces us to recreate resources + ConfigureNumberImageGenerator(); + + CreateToolbar(current_tb_info_, current_tb_info_size_); + // Load autoscroll anchor image. + autoscroll_anchor_ = + CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAN_SCROLL_ICON); + + ConfigurePageIndicator(); + ConfigureProgressBar(); + + pp::Point scroll_position = engine_->GetScrollPosition(); + ScalePoint(device_scale_ / old_device_scale, &scroll_position); + engine_->SetScrollPosition(scroll_position); + } + + UpdateZoomScale(); + if (zoom_ != old_zoom || device_scale_ != old_device_scale) + engine_->ZoomUpdated(zoom_ * device_scale_); + if (zoom_ != old_zoom) + ZoomChanged(zoom_); + + available_area_ = pp::Rect(plugin_size_); + if (GetDocumentPixelHeight() > plugin_size_.height()) { + CreateVerticalScrollbar(); + } else { + DestroyVerticalScrollbar(); + } + + int v_scrollbar_reserved_thickness = + v_scrollbar_.get() ? GetScaled(GetScrollbarReservedThickness()) : 0; + + if (!force_no_horizontal_scrollbar && + GetDocumentPixelWidth() > + (plugin_size_.width() - v_scrollbar_reserved_thickness)) { + CreateHorizontalScrollbar(); + + // Adding the horizontal scrollbar now might cause us to need vertical + // scrollbars. + if (GetDocumentPixelHeight() > + plugin_size_.height() - GetScaled(GetScrollbarReservedThickness())) { + CreateVerticalScrollbar(); + } + + } else { + DestroyHorizontalScrollbar(); + } + +#ifdef ENABLE_THUMBNAILS + int thumbnails_pos = 0, thumbnails_total = 0; +#endif + if (v_scrollbar_.get()) { + v_scrollbar_->SetScale(device_scale_); + available_area_.set_width( + std::max(0, plugin_size_.width() - v_scrollbar_reserved_thickness)); + +#ifdef ENABLE_THUMBNAILS + int height = plugin_size_.height(); +#endif + int height_dip = plugin_dip_size_.height(); + +#if defined(OS_MACOSX) + // Before Lion, Mac always had the resize at the bottom. After that, it + // never did. + if ((base::mac::IsOSSnowLeopard() && full_) || + (base::mac::IsOSLionOrLater() && h_scrollbar_.get())) { +#else + if (h_scrollbar_.get()) { +#endif // defined(OS_MACOSX) +#ifdef ENABLE_THUMBNAILS + height -= GetScaled(GetScrollbarThickness()); +#endif + height_dip -= GetScrollbarThickness(); + } +#ifdef ENABLE_THUMBNAILS + int32 doc_height = GetDocumentPixelHeight(); +#endif + int32 doc_height_dip = + static_cast<int32>(GetDocumentPixelHeight() / device_scale_); +#if defined(OS_MACOSX) + // On the Mac we always allow room for the resize button (whose width is + // the same as that of the scrollbar) in full mode. However, if there is no + // no horizontal scrollbar, the end of the scrollbar will scroll past the + // end of the document. This is because the scrollbar assumes that its own + // height (in the case of a vscroll bar) is the same as the height of the + // viewport. Since the viewport is actually larger, we compensate by + // adjusting the document height. Similar logic applies below for the + // horizontal scrollbar. + // For example, if the document size is 1000, and the viewport size is 200, + // then the scrollbar position at the end will be 800. In this case the + // viewport is actally 215 (assuming 15 as the scrollbar width) but the + // scrollbar thinks it is 200. We want the scrollbar position at the end to + // be 785. Making the document size 985 achieves this. + if (full_ && !h_scrollbar_.get()) { +#ifdef ENABLE_THUMBNAILS + doc_height -= GetScaled(GetScrollbarThickness()); +#endif + doc_height_dip -= GetScrollbarThickness(); + } +#endif // defined(OS_MACOSX) + + int32 position; + position = v_scrollbar_->GetValue(); + position = static_cast<int>(position * zoom_ / old_zoom); + valid_v_range_ = doc_height_dip - height_dip; + if (position > valid_v_range_) + position = valid_v_range_; + + v_scrollbar_->SetValue(position); + + PP_Rect loc; + loc.point.x = static_cast<int>(available_area_.right() / device_scale_); + if (IsOverlayScrollbar()) + loc.point.x -= scrollbar_thickness; + loc.point.y = 0; + loc.size.width = scrollbar_thickness; + loc.size.height = height_dip; + v_scrollbar_->SetLocation(loc); + v_scrollbar_->SetDocumentSize(doc_height_dip); + +#ifdef ENABLE_THUMBNAILS + thumbnails_pos = position; + thumbnails_total = doc_height - height; +#endif + } + + if (h_scrollbar_.get()) { + h_scrollbar_->SetScale(device_scale_); + available_area_.set_height( + std::max(0, plugin_size_.height() - + GetScaled(GetScrollbarReservedThickness()))); + + int width_dip = plugin_dip_size_.width(); + + // See note above. +#if defined(OS_MACOSX) + if ((base::mac::IsOSSnowLeopard() && full_) || + (base::mac::IsOSLionOrLater() && v_scrollbar_.get())) { +#else + if (v_scrollbar_.get()) { +#endif + width_dip -= GetScrollbarThickness(); + } + int32 doc_width_dip = + static_cast<int32>(GetDocumentPixelWidth() / device_scale_); +#if defined(OS_MACOSX) + // See comment in the above if (v_scrollbar_.get()) block. + if (full_ && !v_scrollbar_.get()) + doc_width_dip -= GetScrollbarThickness(); +#endif // defined(OS_MACOSX) + + int32 position; + position = h_scrollbar_->GetValue(); + position = static_cast<int>(position * zoom_ / old_zoom); + position = std::min(position, doc_width_dip - width_dip); + + h_scrollbar_->SetValue(position); + + PP_Rect loc; + loc.point.x = 0; + loc.point.y = static_cast<int>(available_area_.bottom() / device_scale_); + if (IsOverlayScrollbar()) + loc.point.y -= scrollbar_thickness; + loc.size.width = width_dip; + loc.size.height = scrollbar_thickness; + h_scrollbar_->SetLocation(loc); + h_scrollbar_->SetDocumentSize(doc_width_dip); + } + + int doc_width = GetDocumentPixelWidth(); + if (doc_width < available_area_.width()) { + available_area_.Offset((available_area_.width() - doc_width) / 2, 0); + available_area_.set_width(doc_width); + } + int doc_height = GetDocumentPixelHeight(); + if (doc_height < available_area_.height()) { + available_area_.set_height(doc_height); + } + + // We'll invalidate the entire plugin anyways. + UpdateToolbarPosition(false); + UpdateProgressBarPosition(false); + UpdatePageIndicatorPosition(false); + +#ifdef ENABLE_THUMBNAILS + // Update thumbnail control position. + thumbnails_.SetPosition(thumbnails_pos, thumbnails_total, false); + pp::Rect thumbnails_rc(plugin_size_.width() - GetScaled(kThumbnailsWidth), 0, + GetScaled(kThumbnailsWidth), plugin_size_.height()); + if (v_scrollbar_.get()) + thumbnails_rc.Offset(-v_scrollbar_reserved_thickness, 0); + if (h_scrollbar_.get()) + thumbnails_rc.Inset(0, 0, 0, v_scrollbar_reserved_thickness); + thumbnails_.SetRect(thumbnails_rc, false); +#endif + + CalculateBackgroundParts(); + engine_->PageOffsetUpdated(available_area_.point()); + engine_->PluginSizeUpdated(available_area_.size()); + + if (!document_size_.GetArea()) + return; + paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_)); + + if (on_plugin_size_changed_callback_.is_string()) + ExecuteScript(on_plugin_size_changed_callback_); +} + +void Instance::CreateHorizontalScrollbar() { + if (h_scrollbar_.get()) + return; + + h_scrollbar_.reset(new pp::Scrollbar_Dev(this, false)); +} + +void Instance::CreateVerticalScrollbar() { + if (v_scrollbar_.get()) + return; + + v_scrollbar_.reset(new pp::Scrollbar_Dev(this, true)); +} + +void Instance::DestroyHorizontalScrollbar() { + if (!h_scrollbar_.get()) + return; + if (h_scrollbar_->GetValue()) + engine_->ScrolledToXPosition(0); + h_scrollbar_.reset(); +} + +void Instance::DestroyVerticalScrollbar() { + if (!v_scrollbar_.get()) + return; + if (v_scrollbar_->GetValue()) + engine_->ScrolledToYPosition(0); + v_scrollbar_.reset(); + page_indicator_.Show(false, true); +} + +int Instance::GetScrollbarThickness() { + if (scrollbar_thickness_ == -1) { + pp::Scrollbar_Dev temp_scrollbar(this, false); + scrollbar_thickness_ = temp_scrollbar.GetThickness(); + scrollbar_reserved_thickness_ = + temp_scrollbar.IsOverlay() ? 0 : scrollbar_thickness_; + } + + return scrollbar_thickness_; +} + +int Instance::GetScrollbarReservedThickness() { + GetScrollbarThickness(); + return scrollbar_reserved_thickness_; +} + +bool Instance::IsOverlayScrollbar() { + return GetScrollbarReservedThickness() == 0; +} + +void Instance::CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size) { + toolbar_.reset(new FadingControls()); + + DCHECK(tb_info); + DCHECK(size >= 0); + + // Remember the current toolbar information in case we need to recreate the + // images later. + current_tb_info_ = tb_info; + current_tb_info_size_ = size; + + int max_height = 0; + pp::Point origin(kToolbarFadingOffsetLeft, kToolbarFadingOffsetTop); + ScalePoint(device_scale_, &origin); + + std::list<Button*> buttons; + for (size_t i = 0; i < size; i++) { + Button* btn = new Button; + pp::ImageData normal_face = + CreateResourceImage(tb_info[i].normal); + btn->CreateButton(tb_info[i].id, + origin, + true, + toolbar_.get(), + tb_info[i].style, + normal_face, + CreateResourceImage(tb_info[i].highlighted), + CreateResourceImage(tb_info[i].pressed)); + buttons.push_back(btn); + + origin += pp::Point(normal_face.size().width(), 0); + max_height = std::max(max_height, normal_face.size().height()); + } + + pp::Rect rc_toolbar(0, 0, + origin.x() + GetToolbarRightOffset(), + origin.y() + max_height + GetToolbarBottomOffset()); + toolbar_->CreateFadingControls( + kToolbarId, rc_toolbar, false, this, kTransparentAlpha); + + std::list<Button*>::iterator iter; + for (iter = buttons.begin(); iter != buttons.end(); ++iter) { + toolbar_->AddControl(*iter); + } +} + +int Instance::GetToolbarRightOffset() { + int scrollbar_thickness = GetScrollbarThickness(); + return GetScaled(kToolbarFadingOffsetRight) + 2 * scrollbar_thickness; +} + +int Instance::GetToolbarBottomOffset() { + int scrollbar_thickness = GetScrollbarThickness(); + return GetScaled(kToolbarFadingOffsetBottom) + scrollbar_thickness; +} + +std::vector<pp::ImageData> Instance::GetThumbnailResources() { + std::vector<pp::ImageData> num_images(10); + num_images[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_0); + num_images[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_1); + num_images[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_2); + num_images[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_3); + num_images[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_4); + num_images[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_5); + num_images[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_6); + num_images[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_7); + num_images[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_8); + num_images[9] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_9); + return num_images; +} + +std::vector<pp::ImageData> Instance::GetProgressBarResources( + pp::ImageData* background) { + std::vector<pp::ImageData> result(9); + result[0] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_0); + result[1] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_1); + result[2] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_2); + result[3] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_3); + result[4] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_4); + result[5] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_5); + result[6] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_6); + result[7] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_7); + result[8] = CreateResourceImage(PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_8); + *background = CreateResourceImage( + PP_RESOURCEIMAGE_PDF_PROGRESS_BAR_BACKGROUND); + return result; +} + +void Instance::CreatePageIndicator(bool always_visible) { + page_indicator_.CreatePageIndicator(kPageIndicatorId, false, this, + number_image_generator(), always_visible); + ConfigurePageIndicator(); +} + +void Instance::ConfigurePageIndicator() { + pp::ImageData background = + CreateResourceImage(PP_RESOURCEIMAGE_PDF_PAGE_INDICATOR_BACKGROUND); + page_indicator_.Configure(pp::Point(), background); +} + +void Instance::CreateProgressBar() { + pp::ImageData background; + std::vector<pp::ImageData> images = GetProgressBarResources(&background); + std::string text = GetLocalizedString(PP_RESOURCESTRING_PDFPROGRESSLOADING); + progress_bar_.CreateProgressControl(kProgressBarId, false, this, 0.0, + device_scale_, images, background, text); +} + +void Instance::ConfigureProgressBar() { + pp::ImageData background; + std::vector<pp::ImageData> images = GetProgressBarResources(&background); + progress_bar_.Reconfigure(background, images, device_scale_); +} + +void Instance::CreateThumbnails() { + thumbnails_.CreateThumbnailControl( + kThumbnailsId, pp::Rect(), false, this, engine_.get(), + number_image_generator()); +} + +void Instance::LoadUrl(const std::string& url) { + LoadUrlInternal(url, &embed_loader_, &Instance::DidOpen); +} + +void Instance::LoadPreviewUrl(const std::string& url) { + LoadUrlInternal(url, &embed_preview_loader_, &Instance::DidOpenPreview); +} + +void Instance::LoadUrlInternal(const std::string& url, pp::URLLoader* loader, + void (Instance::* method)(int32_t)) { + pp::URLRequestInfo request(this); + request.SetURL(url); + request.SetMethod("GET"); + + *loader = CreateURLLoaderInternal(); + pp::CompletionCallback callback = loader_factory_.NewCallback(method); + int rv = loader->Open(request, callback); + if (rv != PP_OK_COMPLETIONPENDING) + callback.Run(rv); +} + +pp::URLLoader Instance::CreateURLLoaderInternal() { + pp::URLLoader loader(this); + + const PPB_URLLoaderTrusted* trusted_interface = + reinterpret_cast<const PPB_URLLoaderTrusted*>( + pp::Module::Get()->GetBrowserInterface( + PPB_URLLOADERTRUSTED_INTERFACE)); + if (trusted_interface) + trusted_interface->GrantUniversalAccess(loader.pp_resource()); + return loader; +} + +int Instance::GetInitialPage(const std::string& url) { +#if defined(OS_NACL) + return -1; +#else + size_t found_idx = url.find('#'); + if (found_idx == std::string::npos) + return -1; + + const std::string& ref = url.substr(found_idx + 1); + std::vector<std::string> fragments; + Tokenize(ref, kDelimiters, &fragments); + + // Page number to return, zero-based. + int page = -1; + + // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly + // mentioned except by example in the Adobe "PDF Open Parameters" document. + if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos)) + return engine_->GetNamedDestinationPage(fragments[0]); + + for (size_t i = 0; i < fragments.size(); ++i) { + std::vector<std::string> key_value; + base::SplitString(fragments[i], '=', &key_value); + if (key_value.size() != 2) + continue; + const std::string& key = key_value[0]; + const std::string& value = key_value[1]; + + if (base::strcasecmp(kPage, key.c_str()) == 0) { + // |page_value| is 1-based. + int page_value = -1; + if (base::StringToInt(value, &page_value) && page_value > 0) + page = page_value - 1; + continue; + } + if (base::strcasecmp(kNamedDest, key.c_str()) == 0) { + // |page_value| is 0-based. + int page_value = engine_->GetNamedDestinationPage(value); + if (page_value >= 0) + page = page_value; + continue; + } + } + return page; +#endif +} + +void Instance::UpdateToolbarPosition(bool invalidate) { + pp::Rect ctrl_rc = toolbar_->GetControlsRect(); + int min_toolbar_width = ctrl_rc.width() + GetToolbarRightOffset() + + GetScaled(kToolbarFadingOffsetLeft); + int min_toolbar_height = ctrl_rc.width() + GetToolbarBottomOffset() + + GetScaled(kToolbarFadingOffsetBottom); + + // Update toolbar position + if (plugin_size_.width() < min_toolbar_width || + plugin_size_.height() < min_toolbar_height) { + // Disable toolbar if it does not fit on the screen. + toolbar_->Show(false, invalidate); + } else { + pp::Point offset( + plugin_size_.width() - GetToolbarRightOffset() - ctrl_rc.right(), + plugin_size_.height() - GetToolbarBottomOffset() - ctrl_rc.bottom()); + toolbar_->MoveBy(offset, invalidate); + + int toolbar_width = std::max(plugin_size_.width() / 2, min_toolbar_width); + toolbar_->ExpandLeft(toolbar_width - toolbar_->rect().width()); + toolbar_->Show(painted_first_page_, invalidate); + } +} + +void Instance::UpdateProgressBarPosition(bool invalidate) { + // TODO(gene): verify we don't overlap with toolbar. + int scrollbar_thickness = GetScrollbarThickness(); + pp::Point progress_origin( + scrollbar_thickness + GetScaled(kProgressOffsetLeft), + plugin_size_.height() - progress_bar_.rect().height() - + scrollbar_thickness - GetScaled(kProgressOffsetBottom)); + progress_bar_.MoveTo(progress_origin, invalidate); +} + +void Instance::UpdatePageIndicatorPosition(bool invalidate) { + int32 doc_height = static_cast<int>(document_size_.height() * zoom_); + pp::Point origin( + plugin_size_.width() - page_indicator_.rect().width() - + GetScaled(GetScrollbarReservedThickness()), + page_indicator_.GetYPosition(engine_->GetVerticalScrollbarYPosition(), + doc_height, plugin_size_.height())); + page_indicator_.MoveTo(origin, invalidate); +} + +void Instance::SetZoom(ZoomMode zoom_mode, double scale) { + double old_zoom = zoom_; + + zoom_mode_ = zoom_mode; + if (zoom_mode_ == ZOOM_SCALE) + zoom_ = scale; + UpdateZoomScale(); + + engine_->ZoomUpdated(zoom_ * device_scale_); + OnGeometryChanged(old_zoom, device_scale_); + + // If fit-to-height, snap to the beginning of the most visible page. + if (zoom_mode_ == ZOOM_FIT_TO_PAGE) { + ScrollToPage(engine_->GetMostVisiblePage()); + } + + // Update sticky buttons to the current zoom style. + Button* ftp_btn = static_cast<Button*>( + toolbar_->GetControl(kFitToPageButtonId)); + Button* ftw_btn = static_cast<Button*>( + toolbar_->GetControl(kFitToWidthButtonId)); + switch (zoom_mode_) { + case ZOOM_FIT_TO_PAGE: + ftp_btn->SetPressedState(true); + ftw_btn->SetPressedState(false); + break; + case ZOOM_FIT_TO_WIDTH: + ftw_btn->SetPressedState(true); + ftp_btn->SetPressedState(false); + break; + default: + ftw_btn->SetPressedState(false); + ftp_btn->SetPressedState(false); + } +} + +void Instance::UpdateZoomScale() { + switch (zoom_mode_) { + case ZOOM_SCALE: + break; // Keep current scale. + case ZOOM_FIT_TO_PAGE: { + int page_num = engine_->GetFirstVisiblePage(); + if (page_num == -1) + break; + pp::Rect rc = engine_->GetPageRect(page_num); + if (!rc.height()) + break; + // Calculate fit to width zoom level. + double ftw_zoom = static_cast<double>(plugin_dip_size_.width() - + GetScrollbarReservedThickness()) / document_size_.width(); + // Calculate fit to height zoom level. If document will not fit + // horizontally, adjust zoom level to allow space for horizontal + // scrollbar. + double fth_zoom = + static_cast<double>(plugin_dip_size_.height()) / rc.height(); + if (fth_zoom * document_size_.width() > + plugin_dip_size_.width() - GetScrollbarReservedThickness()) + fth_zoom = static_cast<double>(plugin_dip_size_.height() + - GetScrollbarReservedThickness()) / rc.height(); + zoom_ = std::min(ftw_zoom, fth_zoom); + } break; + case ZOOM_FIT_TO_WIDTH: + case ZOOM_AUTO: + if (!document_size_.width()) + break; + zoom_ = static_cast<double>(plugin_dip_size_.width() - + GetScrollbarReservedThickness()) / document_size_.width(); + if (zoom_mode_ == ZOOM_AUTO && zoom_ > 1.0) + zoom_ = 1.0; + break; + } + zoom_ = ClipToRange(zoom_, kMinZoom, kMaxZoom); +} + +double Instance::CalculateZoom(uint32 control_id) const { + if (control_id == kZoomInButtonId) { + for (size_t i = 0; i < chrome_page_zoom::kPresetZoomFactorsSize; ++i) { + double current_zoom = chrome_page_zoom::kPresetZoomFactors[i]; + if (current_zoom - content::kEpsilon > zoom_) + return current_zoom; + } + } else { + for (size_t i = chrome_page_zoom::kPresetZoomFactorsSize; i > 0; --i) { + double current_zoom = chrome_page_zoom::kPresetZoomFactors[i - 1]; + if (current_zoom + content::kEpsilon < zoom_) + return current_zoom; + } + } + return zoom_; +} + +pp::ImageData Instance::CreateResourceImage(PP_ResourceImage image_id) { + if (hidpi_enabled_) + return pp::PDF::GetResourceImageForScale(this, image_id, device_scale_); + + return pp::PDF::GetResourceImage(this, image_id); +} + +std::string Instance::GetLocalizedString(PP_ResourceString id) { + pp::Var rv(pp::PDF::GetLocalizedString(this, id)); + if (!rv.is_string()) + return std::string(); + + return rv.AsString(); +} + +void Instance::DrawText(const pp::Point& top_center, PP_ResourceString id) { + std::string str(GetLocalizedString(id)); + + pp::FontDescription_Dev description; + description.set_family(PP_FONTFAMILY_SANSSERIF); + description.set_size(kMessageTextSize * device_scale_); + pp::Font_Dev font(this, description); + int length = font.MeasureSimpleText(str); + pp::Point point(top_center); + point.set_x(point.x() - length / 2); + DCHECK(!image_data_.is_null()); + font.DrawSimpleText(&image_data_, str, point, kMessageTextColor); +} + +void Instance::SetPrintPreviewMode(int page_count) { + if (!IsPrintPreview() || page_count <= 0) { + print_preview_page_count_ = 0; + return; + } + + print_preview_page_count_ = page_count; + ScrollToPage(0); + engine_->AppendBlankPages(print_preview_page_count_); + if (preview_pages_info_.size() > 0) + LoadAvailablePreviewPage(); +} + +bool Instance::IsPrintPreview() { + return IsPrintPreviewUrl(url_); +} + +int Instance::GetPageNumberToDisplay() { + int page = engine_->GetMostVisiblePage(); + if (IsPrintPreview() && !print_preview_page_numbers_.empty()) { + page = ClipToRange<int>(page, 0, print_preview_page_numbers_.size() - 1); + return print_preview_page_numbers_[page]; + } + return page + 1; +} + +void Instance::ProcessPreviewPageInfo(const std::string& url, + int dst_page_index) { + if (!IsPrintPreview() || print_preview_page_count_ < 0) + return; + + int src_page_index = ExtractPrintPreviewPageIndex(url); + if (src_page_index < 1) + return; + + preview_pages_info_.push(std::make_pair(url, dst_page_index)); + LoadAvailablePreviewPage(); +} + +void Instance::LoadAvailablePreviewPage() { + if (preview_pages_info_.size() <= 0) + return; + + std::string url = preview_pages_info_.front().first; + int dst_page_index = preview_pages_info_.front().second; + int src_page_index = ExtractPrintPreviewPageIndex(url); + if (src_page_index < 1 || + dst_page_index >= print_preview_page_count_ || + preview_document_load_state_ == LOAD_STATE_LOADING) { + return; + } + + preview_document_load_state_ = LOAD_STATE_LOADING; + LoadPreviewUrl(url); +} + +void Instance::EnableAutoscroll(const pp::Point& origin) { + if (is_autoscroll_) + return; + + pp::Size client_size = plugin_size_; + if (v_scrollbar_.get()) + client_size.Enlarge(-GetScrollbarThickness(), 0); + if (h_scrollbar_.get()) + client_size.Enlarge(0, -GetScrollbarThickness()); + + // Do not allow autoscroll if client area is too small. + if (autoscroll_anchor_.size().width() > client_size.width() || + autoscroll_anchor_.size().height() > client_size.height()) + return; + + autoscroll_rect_ = pp::Rect( + pp::Point(origin.x() - autoscroll_anchor_.size().width() / 2, + origin.y() - autoscroll_anchor_.size().height() / 2), + autoscroll_anchor_.size()); + + // Make sure autoscroll anchor is in the client area. + if (autoscroll_rect_.right() > client_size.width()) { + autoscroll_rect_.set_x( + client_size.width() - autoscroll_anchor_.size().width()); + } + if (autoscroll_rect_.bottom() > client_size.height()) { + autoscroll_rect_.set_y( + client_size.height() - autoscroll_anchor_.size().height()); + } + + if (autoscroll_rect_.x() < 0) + autoscroll_rect_.set_x(0); + if (autoscroll_rect_.y() < 0) + autoscroll_rect_.set_y(0); + + is_autoscroll_ = true; + Invalidate(kAutoScrollId, autoscroll_rect_); + + ScheduleTimer(kAutoScrollId, kAutoScrollTimeoutMs); +} + +void Instance::DisableAutoscroll() { + if (is_autoscroll_) { + is_autoscroll_ = false; + Invalidate(kAutoScrollId, autoscroll_rect_); + } +} + +PP_CursorType_Dev Instance::CalculateAutoscroll(const pp::Point& mouse_pos) { + // Scroll only if mouse pointer is outside of the anchor area. + if (autoscroll_rect_.Contains(mouse_pos)) { + autoscroll_x_ = 0; + autoscroll_y_ = 0; + return PP_CURSORTYPE_MIDDLEPANNING; + } + + // Relative position to the center of anchor area. + pp::Point rel_pos = mouse_pos - autoscroll_rect_.CenterPoint(); + + // Calculate angle from the X axis. Angle is in range from -pi to pi. + double angle = atan2(static_cast<double>(rel_pos.y()), + static_cast<double>(rel_pos.x())); + + autoscroll_x_ = rel_pos.x() * kAutoScrollFactor; + autoscroll_y_ = rel_pos.y() * kAutoScrollFactor; + + // Angle is from -pi to pi. Screen Y is increasing toward bottom, + // so negative angle represent north direction. + if (angle < - (M_PI * 7.0 / 8.0)) { + // going west + return PP_CURSORTYPE_WESTPANNING; + } else if (angle < - (M_PI * 5.0 / 8.0)) { + // going north-west + return PP_CURSORTYPE_NORTHWESTPANNING; + } else if (angle < - (M_PI * 3.0 / 8.0)) { + // going north. + return PP_CURSORTYPE_NORTHPANNING; + } else if (angle < - (M_PI * 1.0 / 8.0)) { + // going north-east + return PP_CURSORTYPE_NORTHEASTPANNING; + } else if (angle < M_PI * 1.0 / 8.0) { + // going east. + return PP_CURSORTYPE_EASTPANNING; + } else if (angle < M_PI * 3.0 / 8.0) { + // going south-east + return PP_CURSORTYPE_SOUTHEASTPANNING; + } else if (angle < M_PI * 5.0 / 8.0) { + // going south. + return PP_CURSORTYPE_SOUTHPANNING; + } else if (angle < M_PI * 7.0 / 8.0) { + // going south-west + return PP_CURSORTYPE_SOUTHWESTPANNING; + } + + // went around the circle, going west again + return PP_CURSORTYPE_WESTPANNING; +} + +void Instance::ConfigureNumberImageGenerator() { + std::vector<pp::ImageData> num_images = GetThumbnailResources(); + pp::ImageData number_background = CreateResourceImage( + PP_RESOURCEIMAGE_PDF_BUTTON_THUMBNAIL_NUM_BACKGROUND); + number_image_generator_->Configure(number_background, + num_images, + device_scale_); +} + +NumberImageGenerator* Instance::number_image_generator() { + if (!number_image_generator_.get()) { + number_image_generator_.reset(new NumberImageGenerator(this)); + ConfigureNumberImageGenerator(); + } + return number_image_generator_.get(); +} + +int Instance::GetScaled(int x) const { + return static_cast<int>(x * device_scale_); +} + +void Instance::UserMetricsRecordAction(const std::string& action) { + pp::PDF::UserMetricsRecordAction(this, pp::Var(action)); +} + +PDFScriptableObject::PDFScriptableObject(Instance* instance) + : instance_(instance) { +} + +PDFScriptableObject::~PDFScriptableObject() { +} + +bool PDFScriptableObject::HasMethod(const pp::Var& name, pp::Var* exception) { + return instance_->HasScriptableMethod(name, exception); +} + +pp::Var PDFScriptableObject::Call(const pp::Var& method, + const std::vector<pp::Var>& args, + pp::Var* exception) { + return instance_->CallScriptableMethod(method, args, exception); +} + +} // namespace chrome_pdf diff --git a/pdf/instance.h b/pdf/instance.h new file mode 100644 index 0000000..07c1a19 --- /dev/null +++ b/pdf/instance.h @@ -0,0 +1,526 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_INSTANCE_H_ +#define PDF_INSTANCE_H_ + +#include <queue> +#include <set> +#include <string> +#include <utility> +#include <vector> + +#include "base/memory/scoped_ptr.h" +#include "pdf/button.h" +#include "pdf/fading_controls.h" +#include "pdf/page_indicator.h" +#include "pdf/paint_manager.h" +#include "pdf/pdf_engine.h" +#include "pdf/preview_mode_client.h" +#include "pdf/progress_control.h" +#include "pdf/thumbnail_control.h" + +#include "ppapi/c/private/ppb_pdf.h" +#include "ppapi/cpp/dev/printing_dev.h" +#include "ppapi/cpp/dev/scriptable_object_deprecated.h" +#include "ppapi/cpp/dev/scrollbar_dev.h" +#include "ppapi/cpp/dev/selection_dev.h" +#include "ppapi/cpp/dev/widget_client_dev.h" +#include "ppapi/cpp/dev/zoom_dev.h" +#include "ppapi/cpp/graphics_2d.h" +#include "ppapi/cpp/image_data.h" +#include "ppapi/cpp/input_event.h" +#include "ppapi/cpp/private/find_private.h" +#include "ppapi/cpp/private/instance_private.h" +#include "ppapi/cpp/private/var_private.h" +#include "ppapi/cpp/url_loader.h" +#include "ppapi/utility/completion_callback_factory.h" + +namespace pp { +class TextInput_Dev; +} + +namespace chrome_pdf { + +struct ToolbarButtonInfo; + +class Instance : public pp::InstancePrivate, + public pp::Find_Private, + public pp::Printing_Dev, + public pp::Selection_Dev, + public pp::WidgetClient_Dev, + public pp::Zoom_Dev, + public PaintManager::Client, + public PDFEngine::Client, + public PreviewModeClient::Client, + public ControlOwner { + public: + explicit Instance(PP_Instance instance); + virtual ~Instance(); + + // pp::Instance implementation. + virtual bool Init(uint32_t argc, + const char* argn[], + const char* argv[]) OVERRIDE; + virtual bool HandleDocumentLoad(const pp::URLLoader& loader) OVERRIDE; + virtual bool HandleInputEvent(const pp::InputEvent& event) OVERRIDE; + virtual void DidChangeView(const pp::View& view) OVERRIDE; + virtual pp::Var GetInstanceObject() OVERRIDE; + + // pp::Find_Private implementation. + virtual bool StartFind(const std::string& text, bool case_sensitive) OVERRIDE; + virtual void SelectFindResult(bool forward) OVERRIDE; + virtual void StopFind() OVERRIDE; + + // pp::PaintManager::Client implementation. + virtual void OnPaint(const std::vector<pp::Rect>& paint_rects, + std::vector<PaintManager::ReadyRect>* ready, + std::vector<pp::Rect>* pending) OVERRIDE; + + // pp::Printing_Dev implementation. + virtual uint32_t QuerySupportedPrintOutputFormats() OVERRIDE; + virtual int32_t PrintBegin( + const PP_PrintSettings_Dev& print_settings) OVERRIDE; + virtual pp::Resource PrintPages( + const PP_PrintPageNumberRange_Dev* page_ranges, + uint32_t page_range_count) OVERRIDE; + virtual void PrintEnd() OVERRIDE; + virtual bool IsPrintScalingDisabled() OVERRIDE; + + // pp::Private implementation. + virtual pp::Var GetLinkAtPosition(const pp::Point& point); + + // PPP_Selection_Dev implementation. + virtual pp::Var GetSelectedText(bool html) OVERRIDE; + + // WidgetClient_Dev implementation. + virtual void InvalidateWidget(pp::Widget_Dev widget, + const pp::Rect& dirty_rect) OVERRIDE; + virtual void ScrollbarValueChanged(pp::Scrollbar_Dev scrollbar, + uint32_t value) OVERRIDE; + virtual void ScrollbarOverlayChanged(pp::Scrollbar_Dev scrollbar, + bool overlay) OVERRIDE; + + // pp::Zoom_Dev implementation. + virtual void Zoom(double scale, bool text_only) OVERRIDE; + void ZoomChanged(double factor); // Override. + + void FlushCallback(int32_t result); + void DidOpen(int32_t result); + void DidOpenPreview(int32_t result); + // If the given widget intersects the rectangle, paints it and adds the + // rect to ready. + void PaintIfWidgetIntersects(pp::Widget_Dev* widget, + const pp::Rect& rect, + std::vector<PaintManager::ReadyRect>* ready, + std::vector<pp::Rect>* pending); + + // Called when the timer is fired. + void OnTimerFired(int32_t); + void OnClientTimerFired(int32_t id); + + // Called when the control timer is fired. + void OnControlTimerFired(int32_t, + const uint32& control_id, + const uint32& timer_id); + + // Called to print without re-entrancy issues. + void OnPrint(int32_t); + + // PDFEngine::Client implementation. + virtual void DocumentSizeUpdated(const pp::Size& size); + virtual void Invalidate(const pp::Rect& rect); + virtual void Scroll(const pp::Point& point); + virtual void ScrollToX(int position); + virtual void ScrollToY(int position); + virtual void ScrollToPage(int page); + virtual void NavigateTo(const std::string& url, bool open_in_new_tab); + virtual void UpdateCursor(PP_CursorType_Dev cursor); + virtual void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks); + virtual void NotifyNumberOfFindResultsChanged(int total, bool final_result); + virtual void NotifySelectedFindResultChanged(int current_find_index); + virtual void GetDocumentPassword( + pp::CompletionCallbackWithOutput<pp::Var> callback); + virtual void Alert(const std::string& message); + virtual bool Confirm(const std::string& message); + virtual std::string Prompt(const std::string& question, + const std::string& default_answer); + virtual std::string GetURL(); + virtual void Email(const std::string& to, + const std::string& cc, + const std::string& bcc, + const std::string& subject, + const std::string& body); + virtual void Print(); + virtual void SubmitForm(const std::string& url, + const void* data, + int length); + virtual std::string ShowFileSelectionDialog(); + virtual pp::URLLoader CreateURLLoader(); + virtual void ScheduleCallback(int id, int delay_in_ms); + virtual void SearchString(const base::char16* string, + const base::char16* term, + bool case_sensitive, + std::vector<SearchStringResult>* results); + virtual void DocumentPaintOccurred(); + virtual void DocumentLoadComplete(int page_count); + virtual void DocumentLoadFailed(); + virtual pp::Instance* GetPluginInstance(); + virtual void DocumentHasUnsupportedFeature(const std::string& feature); + virtual void DocumentLoadProgress(uint32 available, uint32 doc_size); + virtual void FormTextFieldFocusChange(bool in_focus); + virtual bool IsPrintPreview(); + + // ControlOwner implementation. + virtual void OnEvent(uint32 control_id, uint32 event_id, void* data); + virtual void Invalidate(uint32 control_id, const pp::Rect& rc); + virtual uint32 ScheduleTimer(uint32 control_id, uint32 timeout_ms); + virtual void SetEventCapture(uint32 control_id, bool set_capture); + virtual void SetCursor(uint32 control_id, PP_CursorType_Dev cursor_type); + virtual pp::Instance* GetInstance(); + + bool dont_paint() const { return dont_paint_; } + void set_dont_paint(bool dont_paint) { dont_paint_ = dont_paint; } + + // Called by PDFScriptableObject. + bool HasScriptableMethod(const pp::Var& method, pp::Var* exception); + pp::Var CallScriptableMethod(const pp::Var& method, + const std::vector<pp::Var>& args, + pp::Var* exception); + + // PreviewModeClient::Client implementation. + virtual void PreviewDocumentLoadComplete() OVERRIDE; + virtual void PreviewDocumentLoadFailed() OVERRIDE; + + // Helper functions for implementing PPP_PDF. + void RotateClockwise(); + void RotateCounterclockwise(); + + private: + // Called whenever the plugin geometry changes to update the location of the + // scrollbars, background parts, and notifies the pdf engine. + void OnGeometryChanged(double old_zoom, float old_device_scale); + + void CreateHorizontalScrollbar(); + void CreateVerticalScrollbar(); + void DestroyHorizontalScrollbar(); + void DestroyVerticalScrollbar(); + + // Returns the thickness of a scrollbar. This returns the thickness when it's + // shown, so for overlay scrollbars it'll still be non-zero. + int GetScrollbarThickness(); + + // Returns the space we need to reserve for the scrollbar in the plugin area. + // If overlay scrollbars are used, this will be 0. + int GetScrollbarReservedThickness(); + + // Returns true if overlay scrollbars are in use. + bool IsOverlayScrollbar(); + + // Figures out the location of any background rectangles (i.e. those that + // aren't painted by the PDF engine). + void CalculateBackgroundParts(); + + // Computes document width/height in device pixels, based on current zoom and + // device scale + int GetDocumentPixelWidth() const; + int GetDocumentPixelHeight() const; + + // Draws a rectangle with the specified dimensions and color in our buffer. + void FillRect(const pp::Rect& rect, unsigned int color); + + std::vector<pp::ImageData> GetThumbnailResources(); + std::vector<pp::ImageData> GetProgressBarResources(pp::ImageData* background); + + void CreateToolbar(const ToolbarButtonInfo* tb_info, size_t size); + int GetToolbarRightOffset(); + int GetToolbarBottomOffset(); + void CreateProgressBar(); + void ConfigureProgressBar(); + void CreateThumbnails(); + void CreatePageIndicator(bool always_visible); + void ConfigurePageIndicator(); + + void PaintOverlayControl(Control* ctrl, + pp::ImageData* image_data, + std::vector<PaintManager::ReadyRect>* ready); + + void LoadUrl(const std::string& url); + void LoadPreviewUrl(const std::string& url); + void LoadUrlInternal(const std::string& url, pp::URLLoader* loader, + void (Instance::* method)(int32_t)); + + // Creates a URL loader and allows it to access all urls, i.e. not just the + // frame's origin. + pp::URLLoader CreateURLLoaderInternal(); + + // Figure out the initial page to display based on #page=N and #nameddest=foo + // in the |url_|. + // Returns -1 if there is no valid fragment. The returned value is 0-based, + // whereas page=N is 1-based. + int GetInitialPage(const std::string& url); + + void UpdateToolbarPosition(bool invalidate); + void UpdateProgressBarPosition(bool invalidate); + void UpdatePageIndicatorPosition(bool invalidate); + + void FormDidOpen(int32_t result); + + std::string GetLocalizedString(PP_ResourceString id); + + void UserMetricsRecordAction(const std::string& action); + + void SaveAs(); + + enum ZoomMode { + ZOOM_SCALE, // Standard zooming mode, resize will not affect it. + ZOOM_FIT_TO_WIDTH, // Maintain fit to width on resize. + ZOOM_FIT_TO_PAGE, // Maintain fit to page on resize. + ZOOM_AUTO // Maintain the default auto fitting mode on resize. + }; + + enum DocumentLoadState { + LOAD_STATE_LOADING, + LOAD_STATE_COMPLETE, + LOAD_STATE_FAILED, + }; + + // Set new zoom mode and scale. Scale will be ignored if mode != ZOOM_SCALE. + void SetZoom(ZoomMode zoom_mode, double scale); + + // Updates internal zoom scale based on the plugin/document geometry and + // current mode. + void UpdateZoomScale(); + + // Simulates how Chrome "snaps" zooming up/down to the next nearest zoom level + // when the previous zoom level wasn't an integer. We do this so that + // pressing the zoom buttons has the same effect as the menu buttons, even if + // we start from a non-standard zoom level because of fit-width or fit-height. + double CalculateZoom(uint32 control_id) const; + + pp::ImageData CreateResourceImage(PP_ResourceImage image_id); + + void DrawText(const pp::Point& top_center, PP_ResourceString id); + + // Set print preview mode, where the current PDF document is reduced to + // only one page, and then extended to |page_count| pages with + // |page_count| - 1 blank pages. + void SetPrintPreviewMode(int page_count); + + // Returns the page number to be displayed in the page indicator. If the + // plugin is running within print preview, the displayed number might be + // different from the index of the displayed page. + int GetPageNumberToDisplay(); + + // Process the preview page data information. |src_url| specifies the preview + // page data location. The |src_url| is in the format: + // chrome://print/id/page_number/print.pdf + // |dst_page_index| specifies the blank page index that needs to be replaced + // with the new page data. + void ProcessPreviewPageInfo(const std::string& src_url, int dst_page_index); + // Load the next available preview page into the blank page. + void LoadAvailablePreviewPage(); + + // Enables autoscroll using origin as a neutral (center) point. + void EnableAutoscroll(const pp::Point& origin); + // Disables autoscroll and returns to normal functionality. + void DisableAutoscroll(); + // Calculate autoscroll info and return proper mouse pointer and scroll + // andjustments. + PP_CursorType_Dev CalculateAutoscroll(const pp::Point& mouse_pos); + + void ConfigureNumberImageGenerator(); + + NumberImageGenerator* number_image_generator(); + + int GetScaled(int x) const; + + pp::ImageData image_data_; + // Used when the plugin is embedded in a page and we have to create the loader + // ourself. + pp::CompletionCallbackFactory<Instance> loader_factory_; + pp::URLLoader embed_loader_; + pp::URLLoader embed_preview_loader_; + + scoped_ptr<pp::Scrollbar_Dev> h_scrollbar_; + scoped_ptr<pp::Scrollbar_Dev> v_scrollbar_; + int32 valid_v_range_; + + PP_CursorType_Dev cursor_; // The current cursor. + + // Used when selecting and dragging beyond the visible portion, in which case + // we want to scroll the document. + bool timer_pending_; + pp::MouseInputEvent last_mouse_event_; + pp::CompletionCallbackFactory<Instance> timer_factory_; + uint32 current_timer_id_; + + // Size, in pixels, of plugin rectangle. + pp::Size plugin_size_; + // Size, in DIPs, of plugin rectangle. + pp::Size plugin_dip_size_; + // Remaining area, in pixels, to render the pdf in after accounting for + // scrollbars/toolbars and horizontal centering. + pp::Rect available_area_; + // Size of entire document in pixels (i.e. if each page is 800 pixels high and + // there are 10 pages, the height will be 8000). + pp::Size document_size_; + + double zoom_; // Current zoom factor. + + float device_scale_; // Current device scale factor. + bool printing_enabled_; + bool hidpi_enabled_; + // True if the plugin is full-page. + bool full_; + // Zooming mode (none, fit to width, fit to height) + ZoomMode zoom_mode_; + + // If true, this means we told the RenderView that we're starting a network + // request so that it can start the throbber. We will tell it again once the + // document finishes loading. + bool did_call_start_loading_; + + // Hold off on painting invalidated requests while this flag is true. + bool dont_paint_; + + // Indicates if plugin is in autoscroll mode. + bool is_autoscroll_; + // Rect for autoscroll anchor. + pp::Rect autoscroll_rect_; + // Image of the autoscroll anchor and its background. + pp::ImageData autoscroll_anchor_; + // Autoscrolling deltas in pixels. + int autoscroll_x_; + int autoscroll_y_; + + // Thickness of a scrollbar. + int scrollbar_thickness_; + + // Reserved thickness of a scrollbar. This is how much space the scrollbar + // takes from the available area. 0 for overlay. + int scrollbar_reserved_thickness_; + + // Used to remember which toolbar is in use + const ToolbarButtonInfo* current_tb_info_; + size_t current_tb_info_size_; + + PaintManager paint_manager_; + + struct BackgroundPart { + pp::Rect location; + unsigned int color; + }; + std::vector<BackgroundPart> background_parts_; + + struct PrintSettings { + PrintSettings() { + Clear(); + } + void Clear() { + is_printing = false; + print_pages_called_ = false; + memset(&pepper_print_settings, 0, sizeof(pepper_print_settings)); + } + // This is set to true when PrintBegin is called and false when PrintEnd is + // called. + bool is_printing; + // To know whether this was an actual print operation, so we don't double + // count UMA logging. + bool print_pages_called_; + PP_PrintSettings_Dev pepper_print_settings; + }; + + PrintSettings print_settings_; + + scoped_ptr<PDFEngine> engine_; + + // This engine is used to render the individual preview page data. This is + // used only in print preview mode. This will use |PreviewModeClient| + // interface which has very limited access to the pp::Instance. + scoped_ptr<PDFEngine> preview_engine_; + + std::string url_; + + scoped_ptr<FadingControls> toolbar_; + ThumbnailControl thumbnails_; + ProgressControl progress_bar_; + uint32 delayed_progress_timer_id_; + PageIndicator page_indicator_; + + // Used for creating images from numbers. + scoped_ptr<NumberImageGenerator> number_image_generator_; + + // Used for submitting forms. + pp::CompletionCallbackFactory<Instance> form_factory_; + pp::URLLoader form_loader_; + + // Used for printing without re-entrancy issues. + pp::CompletionCallbackFactory<Instance> print_callback_factory_; + + // True if we haven't painted the plugin viewport yet. + bool first_paint_; + + // True when we've painted at least one page from the document. + bool painted_first_page_; + + // True if we should display page indicator, false otherwise + bool show_page_indicator_; + + // Callback when the document load completes. + pp::Var on_load_callback_; + pp::Var on_scroll_callback_; + pp::Var on_plugin_size_changed_callback_; + + DocumentLoadState document_load_state_; + DocumentLoadState preview_document_load_state_; + + // JavaScript interface to control this instance. + // This wraps a PDFScriptableObject in a pp::Var. + pp::VarPrivate instance_object_; + + // Used so that we only tell the browser once about an unsupported feature, to + // avoid the infobar going up more than once. + bool told_browser_about_unsupported_feature_; + + // Keeps track of which unsupported features we reported, so we avoid spamming + // the stats if a feature shows up many times per document. + std::set<std::string> unsupported_features_reported_; + + // Number of pages in print preview mode, 0 if not in print preview mode. + int print_preview_page_count_; + std::vector<int> print_preview_page_numbers_; + + // Used to manage loaded print preview page information. A |PreviewPageInfo| + // consists of data source url string and the page index in the destination + // document. + typedef std::pair<std::string, int> PreviewPageInfo; + std::queue<PreviewPageInfo> preview_pages_info_; + + // Used to signal the browser about focus changes to trigger the OSK. + // TODO(abodenha@chromium.org) Implement full IME support in the plugin. + // http://crbug.com/132565 + scoped_ptr<pp::TextInput_Dev> text_input_; +}; + +// This implements the JavaScript class entrypoint for the plugin instance. +// This class is just a thin wrapper. It delegates relevant methods to Instance. +class PDFScriptableObject : public pp::deprecated::ScriptableObject { + public: + explicit PDFScriptableObject(Instance* instance); + virtual ~PDFScriptableObject(); + + // pp::deprecated::ScriptableObject implementation. + virtual bool HasMethod(const pp::Var& method, pp::Var* exception); + virtual pp::Var Call(const pp::Var& method, + const std::vector<pp::Var>& args, + pp::Var* exception); + + private: + Instance* instance_; +}; + +} // namespace chrome_pdf + +#endif // PDF_INSTANCE_H_ diff --git a/pdf/libpdf.map b/pdf/libpdf.map new file mode 100644 index 0000000..a566f9d --- /dev/null +++ b/pdf/libpdf.map @@ -0,0 +1,10 @@ +{ +global: + GetPDFDocInfo; + PPP_GetInterface; + PPP_InitializeModule; + PPP_ShutdownModule; + RenderPDFPageToBitmap; +local: + *; +}; diff --git a/pdf/number_image_generator.cc b/pdf/number_image_generator.cc new file mode 100644 index 0000000..2896915 --- /dev/null +++ b/pdf/number_image_generator.cc @@ -0,0 +1,81 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/number_image_generator.h" + +#include "base/logging.h" +#include "base/strings/string_util.h" +#include "pdf/draw_utils.h" +#include "pdf/instance.h" + +namespace chrome_pdf { + +const int kPageNumberSeparator = 0; +const int kPageNumberOriginX = 8; +const int kPageNumberOriginY = 4; + +NumberImageGenerator::NumberImageGenerator(Instance* instance) + : instance_(instance), + device_scale_(1.0f) { +} + +NumberImageGenerator::~NumberImageGenerator() { +} + +void NumberImageGenerator::Configure(const pp::ImageData& number_background, + const std::vector<pp::ImageData>& number_images, float device_scale) { + number_background_ = number_background; + number_images_ = number_images; + device_scale_ = device_scale; +} + +void NumberImageGenerator::GenerateImage( + int page_number, pp::ImageData* image) { + char buffer[12]; + base::snprintf(buffer, sizeof(buffer), "%u", page_number); + int extra_width = 0; + DCHECK(number_images_.size() >= 10); + DCHECK(!number_background_.is_null()); + for (size_t i = 1; i < strlen(buffer); ++i) { + int index = buffer[i] - '0'; + extra_width += number_images_[index].size().width(); + extra_width += static_cast<int>(kPageNumberSeparator * device_scale_); + } + + *image = pp::ImageData( + instance_, + PP_IMAGEDATAFORMAT_BGRA_PREMUL, + pp::Size(number_background_.size().width() + extra_width, + number_background_.size().height()), + false); + + int stretch_point = number_background_.size().width() / 2; + + pp::Rect src_rc(0, 0, stretch_point, number_background_.size().height()); + pp::Rect dest_rc(src_rc); + CopyImage(number_background_, src_rc, image, dest_rc, false); + src_rc.Offset(number_background_.size().width() - stretch_point, 0); + dest_rc.Offset(image->size().width() - stretch_point, 0); + CopyImage(number_background_, src_rc, image, dest_rc, false); + src_rc = pp::Rect(stretch_point, 0, 1, number_background_.size().height()); + dest_rc = src_rc; + dest_rc.set_width(extra_width + 1); + CopyImage(number_background_, src_rc, image, dest_rc, true); + + pp::Point origin(static_cast<int>(kPageNumberOriginX * device_scale_), + static_cast<int>(kPageNumberOriginY * device_scale_)); + for (size_t i = 0; i < strlen(buffer); ++i) { + int index = buffer[i] - '0'; + CopyImage( + number_images_[index], + pp::Rect(pp::Point(), number_images_[index].size()), + image, pp::Rect(origin, number_images_[index].size()), false); + origin += pp::Point( + number_images_[index].size().width() + + static_cast<int>(kPageNumberSeparator * device_scale_), 0); + } +} + +} // namespace chrome_pdf + diff --git a/pdf/number_image_generator.h b/pdf/number_image_generator.h new file mode 100644 index 0000000..51ffd3e --- /dev/null +++ b/pdf/number_image_generator.h @@ -0,0 +1,37 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_NUMBER_IMAGE_GENERATOR_H +#define PDF_NUMBER_IMAGE_GENERATOR_H + +#include <vector> + +#include "ppapi/cpp/image_data.h" + +namespace chrome_pdf { + +class Instance; + +class NumberImageGenerator { + public: + explicit NumberImageGenerator(Instance* instance); + virtual ~NumberImageGenerator(); + + void Configure(const pp::ImageData& number_background, + const std::vector<pp::ImageData>& number_images, + float device_scale); + + void GenerateImage(int page_number, pp::ImageData* image); + + private: + Instance* instance_; + pp::ImageData number_background_; + std::vector<pp::ImageData> number_images_; + float device_scale_; +}; + +} // namespace chrome_pdf + +#endif // PDF_NUMBER_IMAGE_GENERATOR_H + diff --git a/pdf/out_of_process_instance.cc b/pdf/out_of_process_instance.cc new file mode 100644 index 0000000..006d2f3 --- /dev/null +++ b/pdf/out_of_process_instance.cc @@ -0,0 +1,1362 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/out_of_process_instance.h" + +#include <algorithm> // for min/max() +#define _USE_MATH_DEFINES // for M_PI +#include <cmath> // for log() and pow() +#include <math.h> +#include <list> + +#include "base/json/json_reader.h" +#include "base/json/json_writer.h" +#include "base/logging.h" +#include "base/strings/string_number_conversions.h" +#include "base/strings/string_split.h" +#include "base/strings/string_util.h" +#include "base/values.h" +#include "chrome/common/content_restriction.h" +#include "net/base/escape.h" +#include "pdf/draw_utils.h" +#include "pdf/pdf.h" +#include "ppapi/c/dev/ppb_cursor_control_dev.h" +#include "ppapi/c/pp_errors.h" +#include "ppapi/c/pp_rect.h" +#include "ppapi/c/private/ppp_pdf.h" +#include "ppapi/c/trusted/ppb_url_loader_trusted.h" +#include "ppapi/cpp/core.h" +#include "ppapi/cpp/dev/memory_dev.h" +#include "ppapi/cpp/dev/text_input_dev.h" +#include "ppapi/cpp/dev/url_util_dev.h" +#include "ppapi/cpp/module.h" +#include "ppapi/cpp/point.h" +#include "ppapi/cpp/private/pdf.h" +#include "ppapi/cpp/rect.h" +#include "ppapi/cpp/resource.h" +#include "ppapi/cpp/url_request_info.h" +#include "ppapi/cpp/var_array.h" +#include "ppapi/cpp/var_dictionary.h" +#include "ui/events/keycodes/keyboard_codes.h" + +#if defined(OS_MACOSX) +#include "base/mac/mac_util.h" +#endif + +namespace chrome_pdf { + +// URL reference parameters. +// For more possible parameters, see RFC 3778 and the "PDF Open Parameters" +// document from Adobe. +const char kDelimiters[] = "#&"; +const char kNamedDest[] = "nameddest"; +const char kPage[] = "page"; + +const char kChromePrint[] = "chrome://print/"; +const char kChromeExtension[] = + "chrome-extension://mhjfbmdgcfjbbpaeojofohoefgiehjai"; + +// Dictionary Value key names for the document accessibility info +const char kAccessibleNumberOfPages[] = "numberOfPages"; +const char kAccessibleLoaded[] = "loaded"; +const char kAccessibleCopyable[] = "copyable"; + +// Constants used in handling postMessage() messages. +const char* kType = "type"; +// Viewport message arguments. (Page -> Plugin). +const char* kJSViewportType = "viewport"; +const char* kJSXOffset = "xOffset"; +const char* kJSYOffset = "yOffset"; +const char* kJSZoom = "zoom"; +// Document dimension arguments (Plugin -> Page). +const char* kJSDocumentDimensionsType = "documentDimensions"; +const char* kJSDocumentWidth = "width"; +const char* kJSDocumentHeight = "height"; +const char* kJSPageDimensions = "pageDimensions"; +const char* kJSPageX = "x"; +const char* kJSPageY = "y"; +const char* kJSPageWidth = "width"; +const char* kJSPageHeight = "height"; +// Document load progress arguments (Plugin -> Page) +const char* kJSLoadProgressType = "loadProgress"; +const char* kJSProgressPercentage = "progress"; +// Get password arguments (Plugin -> Page) +const char* kJSGetPasswordType = "getPassword"; +// Get password complete arguments (Page -> Plugin) +const char* kJSGetPasswordCompleteType = "getPasswordComplete"; +const char* kJSPassword = "password"; +// Print (Page -> Plugin) +const char* kJSPrintType = "print"; +// Go to page (Plugin -> Page) +const char* kJSGoToPageType = "goToPage"; +const char* kJSPageNumber = "page"; +// Reset print preview mode (Page -> Plugin) +const char* kJSResetPrintPreviewModeType = "resetPrintPreviewMode"; +const char* kJSPrintPreviewUrl = "url"; +const char* kJSPrintPreviewGrayscale = "grayscale"; +const char* kJSPrintPreviewPageCount = "pageCount"; +// Load preview page (Page -> Plugin) +const char* kJSLoadPreviewPageType = "loadPreviewPage"; +const char* kJSPreviewPageUrl = "url"; +const char* kJSPreviewPageIndex = "index"; +// Set scroll position (Plugin -> Page) +const char* kJSSetScrollPositionType = "setScrollPosition"; +const char* kJSPositionX = "x"; +const char* kJSPositionY = "y"; +// Set translated strings (Plugin -> Page) +const char* kJSSetTranslatedStringsType = "setTranslatedStrings"; +const char* kJSGetPasswordString = "getPasswordString"; +const char* kJSLoadingString = "loadingString"; +const char* kJSLoadFailedString = "loadFailedString"; +// Request accessibility JSON data (Page -> Plugin) +const char* kJSGetAccessibilityJSONType = "getAccessibilityJSON"; +const char* kJSAccessibilityPageNumber = "page"; +// Reply with accessibility JSON data (Plugin -> Page) +const char* kJSGetAccessibilityJSONReplyType = "getAccessibilityJSONReply"; +const char* kJSAccessibilityJSON = "json"; +// Cancel the stream URL request (Plugin -> Page) +const char* kJSCancelStreamUrlType = "cancelStreamUrl"; + +const int kFindResultCooldownMs = 100; + +const double kMinZoom = 0.01; + +namespace { + +static const char kPPPPdfInterface[] = PPP_PDF_INTERFACE_1; + +PP_Var GetLinkAtPosition(PP_Instance instance, PP_Point point) { + pp::Var var; + void* object = pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface); + if (object) { + var = static_cast<OutOfProcessInstance*>(object)->GetLinkAtPosition( + pp::Point(point)); + } + return var.Detach(); +} + +void Transform(PP_Instance instance, PP_PrivatePageTransformType type) { + void* object = + pp::Instance::GetPerInstanceObject(instance, kPPPPdfInterface); + if (object) { + OutOfProcessInstance* obj_instance = + static_cast<OutOfProcessInstance*>(object); + switch (type) { + case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CW: + obj_instance->RotateClockwise(); + break; + case PP_PRIVATEPAGETRANSFORMTYPE_ROTATE_90_CCW: + obj_instance->RotateCounterclockwise(); + break; + } + } +} + +const PPP_Pdf ppp_private = { + &GetLinkAtPosition, + &Transform +}; + +int ExtractPrintPreviewPageIndex(const std::string& src_url) { + // Sample |src_url| format: chrome://print/id/page_index/print.pdf + std::vector<std::string> url_substr; + base::SplitString(src_url.substr(strlen(kChromePrint)), '/', &url_substr); + if (url_substr.size() != 3) + return -1; + + if (url_substr[2] != "print.pdf") + return -1; + + int page_index = 0; + if (!base::StringToInt(url_substr[1], &page_index)) + return -1; + return page_index; +} + +bool IsPrintPreviewUrl(const std::string& url) { + return url.substr(0, strlen(kChromePrint)) == kChromePrint; +} + +void ScalePoint(float scale, pp::Point* point) { + point->set_x(static_cast<int>(point->x() * scale)); + point->set_y(static_cast<int>(point->y() * scale)); +} + +void ScaleRect(float scale, pp::Rect* rect) { + int left = static_cast<int>(floorf(rect->x() * scale)); + int top = static_cast<int>(floorf(rect->y() * scale)); + int right = static_cast<int>(ceilf((rect->x() + rect->width()) * scale)); + int bottom = static_cast<int>(ceilf((rect->y() + rect->height()) * scale)); + rect->SetRect(left, top, right - left, bottom - top); +} + +} // namespace + +OutOfProcessInstance::OutOfProcessInstance(PP_Instance instance) + : pp::InstancePrivate(instance), + pp::Find_Private(this), + pp::Printing_Dev(this), + pp::Selection_Dev(this), + cursor_(PP_CURSORTYPE_POINTER), + zoom_(1.0), + device_scale_(1.0), + printing_enabled_(true), + full_(false), + paint_manager_(this, this, true), + first_paint_(true), + document_load_state_(LOAD_STATE_LOADING), + preview_document_load_state_(LOAD_STATE_COMPLETE), + uma_(this), + told_browser_about_unsupported_feature_(false), + print_preview_page_count_(0), + last_progress_sent_(0), + recently_sent_find_update_(false), + received_viewport_message_(false) { + loader_factory_.Initialize(this); + timer_factory_.Initialize(this); + form_factory_.Initialize(this); + print_callback_factory_.Initialize(this); + engine_.reset(PDFEngine::Create(this)); + pp::Module::Get()->AddPluginInterface(kPPPPdfInterface, &ppp_private); + AddPerInstanceObject(kPPPPdfInterface, this); + + RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_MOUSE); + RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_KEYBOARD); + RequestFilteringInputEvents(PP_INPUTEVENT_CLASS_TOUCH); +} + +OutOfProcessInstance::~OutOfProcessInstance() { + RemovePerInstanceObject(kPPPPdfInterface, this); +} + +bool OutOfProcessInstance::Init(uint32_t argc, + const char* argn[], + const char* argv[]) { + // Check if the PDF is being loaded in the PDF chrome extension. We only allow + // the plugin to be put into "full frame" mode when it is being loaded in the + // extension because this enables some features that we don't want pages + // abusing outside of the extension. + pp::Var document_url_var = pp::URLUtil_Dev::Get()->GetDocumentURL(this); + std::string document_url = document_url_var.is_string() ? + document_url_var.AsString() : std::string(); + std::string extension_url = std::string(kChromeExtension); + bool in_extension = + !document_url.compare(0, extension_url.size(), extension_url); + + if (in_extension) { + // Check if the plugin is full frame. This is passed in from JS. + for (uint32_t i = 0; i < argc; ++i) { + if (strcmp(argn[i], "full-frame") == 0) { + full_ = true; + break; + } + } + } + + // Only allow the plugin to handle find requests if it is full frame. + if (full_) + SetPluginToHandleFindRequests(); + + // Send translated strings to the extension where they will be displayed. + // TODO(raymes): It would be better to get these in the extension directly + // through an API but no such API currently exists. + pp::VarDictionary translated_strings; + translated_strings.Set(kType, kJSSetTranslatedStringsType); + translated_strings.Set(kJSGetPasswordString, + GetLocalizedString(PP_RESOURCESTRING_PDFGETPASSWORD)); + translated_strings.Set(kJSLoadingString, + GetLocalizedString(PP_RESOURCESTRING_PDFLOADING)); + translated_strings.Set(kJSLoadFailedString, + GetLocalizedString(PP_RESOURCESTRING_PDFLOAD_FAILED)); + PostMessage(translated_strings); + + text_input_.reset(new pp::TextInput_Dev(this)); + + const char* stream_url = NULL; + const char* original_url = NULL; + const char* headers = NULL; + for (uint32_t i = 0; i < argc; ++i) { + if (strcmp(argn[i], "src") == 0) + original_url = argv[i]; + else if (strcmp(argn[i], "stream-url") == 0) + stream_url = argv[i]; + else if (strcmp(argn[i], "headers") == 0) + headers = argv[i]; + } + + if (!original_url) + return false; + + if (!stream_url) + stream_url = original_url; + + // If we're in print preview mode we don't need to load the document yet. + // A |kJSResetPrintPreviewModeType| message will be sent to the plugin letting + // it know the url to load. By not loading here we avoid loading the same + // document twice. + if (IsPrintPreviewUrl(original_url)) + return true; + + LoadUrl(stream_url); + url_ = original_url; + return engine_->New(original_url, headers); +} + +void OutOfProcessInstance::HandleMessage(const pp::Var& message) { + pp::VarDictionary dict(message); + if (!dict.Get(kType).is_string()) { + NOTREACHED(); + return; + } + + std::string type = dict.Get(kType).AsString(); + + if (type == kJSViewportType && + dict.Get(pp::Var(kJSXOffset)).is_int() && + dict.Get(pp::Var(kJSYOffset)).is_int() && + dict.Get(pp::Var(kJSZoom)).is_number()) { + received_viewport_message_ = true; + double zoom = dict.Get(pp::Var(kJSZoom)).AsDouble(); + int x = dict.Get(pp::Var(kJSXOffset)).AsInt(); + int y = dict.Get(pp::Var(kJSYOffset)).AsInt(); + + // Bound the input parameters. + zoom = std::max(kMinZoom, zoom); + int max_x = document_size_.width() * zoom - plugin_dip_size_.width(); + x = std::max(std::min(x, max_x), 0); + int max_y = document_size_.height() * zoom - plugin_dip_size_.height(); + y = std::max(std::min(y, max_y), 0); + + SetZoom(zoom); + engine_->ScrolledToXPosition(x * device_scale_); + engine_->ScrolledToYPosition(y * device_scale_); + } else if (type == kJSGetPasswordCompleteType && + dict.Get(pp::Var(kJSPassword)).is_string()) { + if (password_callback_) { + pp::CompletionCallbackWithOutput<pp::Var> callback = *password_callback_; + password_callback_.reset(); + *callback.output() = dict.Get(pp::Var(kJSPassword)).pp_var(); + callback.Run(PP_OK); + } else { + NOTREACHED(); + } + } else if (type == kJSPrintType) { + Print(); + } else if (type == kJSResetPrintPreviewModeType && + dict.Get(pp::Var(kJSPrintPreviewUrl)).is_string() && + dict.Get(pp::Var(kJSPrintPreviewGrayscale)).is_bool() && + dict.Get(pp::Var(kJSPrintPreviewPageCount)).is_int()) { + url_ = dict.Get(pp::Var(kJSPrintPreviewUrl)).AsString(); + preview_pages_info_ = std::queue<PreviewPageInfo>(); + preview_document_load_state_ = LOAD_STATE_COMPLETE; + document_load_state_ = LOAD_STATE_LOADING; + LoadUrl(url_); + preview_engine_.reset(); + engine_.reset(PDFEngine::Create(this)); + engine_->SetGrayscale(dict.Get(pp::Var(kJSPrintPreviewGrayscale)).AsBool()); + engine_->New(url_.c_str()); + + print_preview_page_count_ = + std::max(dict.Get(pp::Var(kJSPrintPreviewPageCount)).AsInt(), 0); + + paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_)); + } else if (type == kJSLoadPreviewPageType && + dict.Get(pp::Var(kJSPreviewPageUrl)).is_string() && + dict.Get(pp::Var(kJSPreviewPageIndex)).is_int()) { + ProcessPreviewPageInfo(dict.Get(pp::Var(kJSPreviewPageUrl)).AsString(), + dict.Get(pp::Var(kJSPreviewPageIndex)).AsInt()); + } else if (type == kJSGetAccessibilityJSONType) { + pp::VarDictionary reply; + reply.Set(pp::Var(kType), pp::Var(kJSGetAccessibilityJSONReplyType)); + if (dict.Get(pp::Var(kJSAccessibilityPageNumber)).is_int()) { + int page = pp::Var(kJSAccessibilityPageNumber).AsInt(); + reply.Set(pp::Var(kJSAccessibilityJSON), + pp::Var(engine_->GetPageAsJSON(page))); + } else { + base::DictionaryValue node; + node.SetInteger(kAccessibleNumberOfPages, engine_->GetNumberOfPages()); + node.SetBoolean(kAccessibleLoaded, + document_load_state_ != LOAD_STATE_LOADING); + bool has_permissions = + engine_->HasPermission(PDFEngine::PERMISSION_COPY) || + engine_->HasPermission(PDFEngine::PERMISSION_COPY_ACCESSIBLE); + node.SetBoolean(kAccessibleCopyable, has_permissions); + std::string json; + base::JSONWriter::Write(&node, &json); + reply.Set(pp::Var(kJSAccessibilityJSON), pp::Var(json)); + } + PostMessage(reply); + } else { + NOTREACHED(); + } +} + +bool OutOfProcessInstance::HandleInputEvent( + const pp::InputEvent& event) { + // To simplify things, convert the event into device coordinates if it is + // a mouse event. + pp::InputEvent event_device_res(event); + { + pp::MouseInputEvent mouse_event(event); + if (!mouse_event.is_null()) { + pp::Point point = mouse_event.GetPosition(); + pp::Point movement = mouse_event.GetMovement(); + ScalePoint(device_scale_, &point); + ScalePoint(device_scale_, &movement); + mouse_event = pp::MouseInputEvent( + this, + event.GetType(), + event.GetTimeStamp(), + event.GetModifiers(), + mouse_event.GetButton(), + point, + mouse_event.GetClickCount(), + movement); + event_device_res = mouse_event; + } + } + + pp::InputEvent offset_event(event_device_res); + switch (offset_event.GetType()) { + case PP_INPUTEVENT_TYPE_MOUSEDOWN: + case PP_INPUTEVENT_TYPE_MOUSEUP: + case PP_INPUTEVENT_TYPE_MOUSEMOVE: + case PP_INPUTEVENT_TYPE_MOUSEENTER: + case PP_INPUTEVENT_TYPE_MOUSELEAVE: { + pp::MouseInputEvent mouse_event(event_device_res); + pp::MouseInputEvent mouse_event_dip(event); + pp::Point point = mouse_event.GetPosition(); + point.set_x(point.x() - available_area_.x()); + offset_event = pp::MouseInputEvent( + this, + event.GetType(), + event.GetTimeStamp(), + event.GetModifiers(), + mouse_event.GetButton(), + point, + mouse_event.GetClickCount(), + mouse_event.GetMovement()); + break; + } + default: + break; + } + if (engine_->HandleEvent(offset_event)) + return true; + + // TODO(raymes): Implement this scroll behavior in JS: + // When click+dragging, scroll the document correctly. + + if (event.GetType() == PP_INPUTEVENT_TYPE_KEYDOWN && + event.GetModifiers() & kDefaultKeyModifier) { + pp::KeyboardInputEvent keyboard_event(event); + switch (keyboard_event.GetKeyCode()) { + case 'A': + engine_->SelectAll(); + return true; + } + } + + // Return true for unhandled clicks so the plugin takes focus. + return (event.GetType() == PP_INPUTEVENT_TYPE_MOUSEDOWN); +} + +void OutOfProcessInstance::DidChangeView(const pp::View& view) { + pp::Rect view_rect(view.GetRect()); + float old_device_scale = device_scale_; + float device_scale = view.GetDeviceScale(); + pp::Size view_device_size(view_rect.width() * device_scale, + view_rect.height() * device_scale); + + if (view_device_size == plugin_size_ && device_scale == device_scale_) + return; // We don't care about the position, only the size. + + device_scale_ = device_scale; + plugin_dip_size_ = view_rect.size(); + plugin_size_ = view_device_size; + + paint_manager_.SetSize(view_device_size, device_scale_); + + pp::Size new_image_data_size = PaintManager::GetNewContextSize( + image_data_.size(), + plugin_size_); + if (new_image_data_size != image_data_.size()) { + image_data_ = pp::ImageData(this, + PP_IMAGEDATAFORMAT_BGRA_PREMUL, + new_image_data_size, + false); + first_paint_ = true; + } + + if (image_data_.is_null()) { + DCHECK(plugin_size_.IsEmpty()); + return; + } + + OnGeometryChanged(zoom_, old_device_scale); +} + +pp::Var OutOfProcessInstance::GetInstanceObject() { + return pp::Var(); +} + +pp::Var OutOfProcessInstance::GetLinkAtPosition( + const pp::Point& point) { + pp::Point offset_point(point); + ScalePoint(device_scale_, &offset_point); + offset_point.set_x(offset_point.x() - available_area_.x()); + return engine_->GetLinkAtPosition(offset_point); +} + +pp::Var OutOfProcessInstance::GetSelectedText(bool html) { + if (html || !engine_->HasPermission(PDFEngine::PERMISSION_COPY)) + return pp::Var(); + return engine_->GetSelectedText(); +} + +uint32_t OutOfProcessInstance::QuerySupportedPrintOutputFormats() { + return engine_->QuerySupportedPrintOutputFormats(); +} + +int32_t OutOfProcessInstance::PrintBegin( + const PP_PrintSettings_Dev& print_settings) { + // For us num_pages is always equal to the number of pages in the PDF + // document irrespective of the printable area. + int32_t ret = engine_->GetNumberOfPages(); + if (!ret) + return 0; + + uint32_t supported_formats = engine_->QuerySupportedPrintOutputFormats(); + if ((print_settings.format & supported_formats) == 0) + return 0; + + print_settings_.is_printing = true; + print_settings_.pepper_print_settings = print_settings; + engine_->PrintBegin(); + return ret; +} + +pp::Resource OutOfProcessInstance::PrintPages( + const PP_PrintPageNumberRange_Dev* page_ranges, + uint32_t page_range_count) { + if (!print_settings_.is_printing) + return pp::Resource(); + + print_settings_.print_pages_called_ = true; + return engine_->PrintPages(page_ranges, page_range_count, + print_settings_.pepper_print_settings); +} + +void OutOfProcessInstance::PrintEnd() { + if (print_settings_.print_pages_called_) + UserMetricsRecordAction("PDF.PrintPage"); + print_settings_.Clear(); + engine_->PrintEnd(); +} + +bool OutOfProcessInstance::IsPrintScalingDisabled() { + return !engine_->GetPrintScaling(); +} + +bool OutOfProcessInstance::StartFind(const std::string& text, + bool case_sensitive) { + engine_->StartFind(text.c_str(), case_sensitive); + return true; +} + +void OutOfProcessInstance::SelectFindResult(bool forward) { + engine_->SelectFindResult(forward); +} + +void OutOfProcessInstance::StopFind() { + engine_->StopFind(); + tickmarks_.clear(); + SetTickmarks(tickmarks_); +} + +void OutOfProcessInstance::OnPaint( + const std::vector<pp::Rect>& paint_rects, + std::vector<PaintManager::ReadyRect>* ready, + std::vector<pp::Rect>* pending) { + if (image_data_.is_null()) { + DCHECK(plugin_size_.IsEmpty()); + return; + } + if (first_paint_) { + first_paint_ = false; + pp::Rect rect = pp::Rect(pp::Point(), image_data_.size()); + unsigned int color = kBackgroundColorA << 24 | + kBackgroundColorR << 16 | + kBackgroundColorG << 8 | + kBackgroundColorB; + FillRect(rect, color); + ready->push_back(PaintManager::ReadyRect(rect, image_data_, true)); + } + + if (!received_viewport_message_) + return; + + engine_->PrePaint(); + + for (size_t i = 0; i < paint_rects.size(); i++) { + // Intersect with plugin area since there could be pending invalidates from + // when the plugin area was larger. + pp::Rect rect = + paint_rects[i].Intersect(pp::Rect(pp::Point(), plugin_size_)); + if (rect.IsEmpty()) + continue; + + pp::Rect pdf_rect = available_area_.Intersect(rect); + if (!pdf_rect.IsEmpty()) { + pdf_rect.Offset(available_area_.x() * -1, 0); + + std::vector<pp::Rect> pdf_ready; + std::vector<pp::Rect> pdf_pending; + engine_->Paint(pdf_rect, &image_data_, &pdf_ready, &pdf_pending); + for (size_t j = 0; j < pdf_ready.size(); ++j) { + pdf_ready[j].Offset(available_area_.point()); + ready->push_back( + PaintManager::ReadyRect(pdf_ready[j], image_data_, false)); + } + for (size_t j = 0; j < pdf_pending.size(); ++j) { + pdf_pending[j].Offset(available_area_.point()); + pending->push_back(pdf_pending[j]); + } + } + + for (size_t j = 0; j < background_parts_.size(); ++j) { + pp::Rect intersection = background_parts_[j].location.Intersect(rect); + if (!intersection.IsEmpty()) { + FillRect(intersection, background_parts_[j].color); + ready->push_back( + PaintManager::ReadyRect(intersection, image_data_, false)); + } + } + } + + engine_->PostPaint(); +} + +void OutOfProcessInstance::DidOpen(int32_t result) { + if (result == PP_OK) { + if (!engine_->HandleDocumentLoad(embed_loader_)) { + document_load_state_ = LOAD_STATE_LOADING; + DocumentLoadFailed(); + } + } else if (result != PP_ERROR_ABORTED) { // Can happen in tests. + NOTREACHED(); + DocumentLoadFailed(); + } + + // If it's a progressive load, cancel the stream URL request so that requests + // can be made on the original URL. + // TODO(raymes): Make this clearer once the in-process plugin is deleted. + if (engine_->IsProgressiveLoad()) { + pp::VarDictionary message; + message.Set(kType, kJSCancelStreamUrlType); + PostMessage(message); + } +} + +void OutOfProcessInstance::DidOpenPreview(int32_t result) { + if (result == PP_OK) { + preview_engine_.reset(PDFEngine::Create(new PreviewModeClient(this))); + preview_engine_->HandleDocumentLoad(embed_preview_loader_); + } else { + NOTREACHED(); + } +} + +void OutOfProcessInstance::OnClientTimerFired(int32_t id) { + engine_->OnCallback(id); +} + +void OutOfProcessInstance::CalculateBackgroundParts() { + background_parts_.clear(); + int left_width = available_area_.x(); + int right_start = available_area_.right(); + int right_width = abs(plugin_size_.width() - available_area_.right()); + int bottom = std::min(available_area_.bottom(), plugin_size_.height()); + + // Add the left, right, and bottom rectangles. Note: we assume only + // horizontal centering. + BackgroundPart part; + part.color = kBackgroundColorA << 24 | + kBackgroundColorR << 16 | + kBackgroundColorG << 8 | + kBackgroundColorB; + part.location = pp::Rect(0, 0, left_width, bottom); + if (!part.location.IsEmpty()) + background_parts_.push_back(part); + part.location = pp::Rect(right_start, 0, right_width, bottom); + if (!part.location.IsEmpty()) + background_parts_.push_back(part); + part.location = pp::Rect( + 0, bottom, plugin_size_.width(), plugin_size_.height() - bottom); + if (!part.location.IsEmpty()) + background_parts_.push_back(part); +} + +int OutOfProcessInstance::GetDocumentPixelWidth() const { + return static_cast<int>(ceil(document_size_.width() * zoom_ * device_scale_)); +} + +int OutOfProcessInstance::GetDocumentPixelHeight() const { + return static_cast<int>( + ceil(document_size_.height() * zoom_ * device_scale_)); +} + +void OutOfProcessInstance::FillRect(const pp::Rect& rect, unsigned int color) { + DCHECK(!image_data_.is_null() || rect.IsEmpty()); + unsigned int* buffer_start = static_cast<unsigned int*>(image_data_.data()); + int stride = image_data_.stride(); + unsigned int* ptr = buffer_start + rect.y() * stride / 4 + rect.x(); + int height = rect.height(); + int width = rect.width(); + for (int y = 0; y < height; ++y) { + for (int x = 0; x < width; ++x) + *(ptr + x) = color; + ptr += stride /4; + } +} + +void OutOfProcessInstance::DocumentSizeUpdated(const pp::Size& size) { + document_size_ = size; + + pp::VarDictionary dimensions; + dimensions.Set(kType, kJSDocumentDimensionsType); + dimensions.Set(kJSDocumentWidth, pp::Var(document_size_.width())); + dimensions.Set(kJSDocumentHeight, pp::Var(document_size_.height())); + pp::VarArray page_dimensions_array; + int num_pages = engine_->GetNumberOfPages(); + for (int i = 0; i < num_pages; ++i) { + pp::Rect page_rect = engine_->GetPageRect(i); + pp::VarDictionary page_dimensions; + page_dimensions.Set(kJSPageX, pp::Var(page_rect.x())); + page_dimensions.Set(kJSPageY, pp::Var(page_rect.y())); + page_dimensions.Set(kJSPageWidth, pp::Var(page_rect.width())); + page_dimensions.Set(kJSPageHeight, pp::Var(page_rect.height())); + page_dimensions_array.Set(i, page_dimensions); + } + dimensions.Set(kJSPageDimensions, page_dimensions_array); + PostMessage(dimensions); + + OnGeometryChanged(zoom_, device_scale_); +} + +void OutOfProcessInstance::Invalidate(const pp::Rect& rect) { + pp::Rect offset_rect(rect); + offset_rect.Offset(available_area_.point()); + paint_manager_.InvalidateRect(offset_rect); +} + +void OutOfProcessInstance::Scroll(const pp::Point& point) { + paint_manager_.ScrollRect(available_area_, point); +} + +void OutOfProcessInstance::ScrollToX(int x) { + pp::VarDictionary position; + position.Set(kType, kJSSetScrollPositionType); + position.Set(kJSPositionX, pp::Var(x / device_scale_)); + PostMessage(position); +} + +void OutOfProcessInstance::ScrollToY(int y) { + pp::VarDictionary position; + position.Set(kType, kJSSetScrollPositionType); + position.Set(kJSPositionY, pp::Var(y / device_scale_)); + PostMessage(position); +} + +void OutOfProcessInstance::ScrollToPage(int page) { + if (engine_->GetNumberOfPages() == 0) + return; + + pp::VarDictionary message; + message.Set(kType, kJSGoToPageType); + message.Set(kJSPageNumber, pp::Var(page)); + PostMessage(message); +} + +void OutOfProcessInstance::NavigateTo(const std::string& url, + bool open_in_new_tab) { + std::string url_copy(url); + + // Empty |url_copy| is ok, and will effectively be a reload. + // Skip the code below so an empty URL does not turn into "http://", which + // will cause GURL to fail a DCHECK. + if (!url_copy.empty()) { + // If there's no scheme, add http. + if (url_copy.find("://") == std::string::npos && + url_copy.find("mailto:") == std::string::npos) { + url_copy = std::string("http://") + url_copy; + } + // Make sure |url_copy| starts with a valid scheme. + if (url_copy.find("http://") != 0 && + url_copy.find("https://") != 0 && + url_copy.find("ftp://") != 0 && + url_copy.find("mailto:") != 0) { + return; + } + // Make sure |url_copy| is not only a scheme. + if (url_copy == "http://" || + url_copy == "https://" || + url_copy == "ftp://" || + url_copy == "mailto:") { + return; + } + } + if (open_in_new_tab) { + GetWindowObject().Call("open", url_copy); + } else { + GetWindowObject().GetProperty("top").GetProperty("location"). + SetProperty("href", url_copy); + } +} + +void OutOfProcessInstance::UpdateCursor(PP_CursorType_Dev cursor) { + if (cursor == cursor_) + return; + cursor_ = cursor; + + const PPB_CursorControl_Dev* cursor_interface = + reinterpret_cast<const PPB_CursorControl_Dev*>( + pp::Module::Get()->GetBrowserInterface(PPB_CURSOR_CONTROL_DEV_INTERFACE)); + if (!cursor_interface) { + NOTREACHED(); + return; + } + + cursor_interface->SetCursor( + pp_instance(), cursor_, pp::ImageData().pp_resource(), NULL); +} + +void OutOfProcessInstance::UpdateTickMarks( + const std::vector<pp::Rect>& tickmarks) { + float inverse_scale = 1.0f / device_scale_; + std::vector<pp::Rect> scaled_tickmarks = tickmarks; + for (size_t i = 0; i < scaled_tickmarks.size(); i++) + ScaleRect(inverse_scale, &scaled_tickmarks[i]); + tickmarks_ = scaled_tickmarks; +} + +void OutOfProcessInstance::NotifyNumberOfFindResultsChanged(int total, + bool final_result) { + // We don't want to spam the renderer with too many updates to the number of + // find results. Don't send an update if we sent one too recently. If it's the + // final update, we always send it though. + if (final_result) { + NumberOfFindResultsChanged(total, final_result); + SetTickmarks(tickmarks_); + return; + } + + if (recently_sent_find_update_) + return; + + NumberOfFindResultsChanged(total, final_result); + SetTickmarks(tickmarks_); + recently_sent_find_update_ = true; + pp::CompletionCallback callback = + timer_factory_.NewCallback( + &OutOfProcessInstance::ResetRecentlySentFindUpdate); + pp::Module::Get()->core()->CallOnMainThread(kFindResultCooldownMs, + callback, 0); +} + +void OutOfProcessInstance::NotifySelectedFindResultChanged( + int current_find_index) { + SelectedFindResultChanged(current_find_index); +} + +void OutOfProcessInstance::GetDocumentPassword( + pp::CompletionCallbackWithOutput<pp::Var> callback) { + if (password_callback_) { + NOTREACHED(); + return; + } + + password_callback_.reset( + new pp::CompletionCallbackWithOutput<pp::Var>(callback)); + pp::VarDictionary message; + message.Set(pp::Var(kType), pp::Var(kJSGetPasswordType)); + PostMessage(message); +} + +void OutOfProcessInstance::Alert(const std::string& message) { + GetWindowObject().Call("alert", message); +} + +bool OutOfProcessInstance::Confirm(const std::string& message) { + pp::Var result = GetWindowObject().Call("confirm", message); + return result.is_bool() ? result.AsBool() : false; +} + +std::string OutOfProcessInstance::Prompt(const std::string& question, + const std::string& default_answer) { + pp::Var result = GetWindowObject().Call("prompt", question, default_answer); + return result.is_string() ? result.AsString() : std::string(); +} + +std::string OutOfProcessInstance::GetURL() { + return url_; +} + +void OutOfProcessInstance::Email(const std::string& to, + const std::string& cc, + const std::string& bcc, + const std::string& subject, + const std::string& body) { + std::string javascript = + "var href = 'mailto:" + net::EscapeUrlEncodedData(to, false) + + "?cc=" + net::EscapeUrlEncodedData(cc, false) + + "&bcc=" + net::EscapeUrlEncodedData(bcc, false) + + "&subject=" + net::EscapeUrlEncodedData(subject, false) + + "&body=" + net::EscapeUrlEncodedData(body, false) + + "';var temp = window.open(href, '_blank', " + + "'width=1,height=1');if(temp) temp.close();"; + ExecuteScript(javascript); +} + +void OutOfProcessInstance::Print() { + if (!printing_enabled_ || + (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) && + !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY))) { + return; + } + + pp::CompletionCallback callback = + print_callback_factory_.NewCallback(&OutOfProcessInstance::OnPrint); + pp::Module::Get()->core()->CallOnMainThread(0, callback); +} + +void OutOfProcessInstance::OnPrint(int32_t) { + pp::PDF::Print(this); +} + +void OutOfProcessInstance::SubmitForm(const std::string& url, + const void* data, + int length) { + pp::URLRequestInfo request(this); + request.SetURL(url); + request.SetMethod("POST"); + request.AppendDataToBody(reinterpret_cast<const char*>(data), length); + + pp::CompletionCallback callback = + form_factory_.NewCallback(&OutOfProcessInstance::FormDidOpen); + form_loader_ = CreateURLLoaderInternal(); + int rv = form_loader_.Open(request, callback); + if (rv != PP_OK_COMPLETIONPENDING) + callback.Run(rv); +} + +void OutOfProcessInstance::FormDidOpen(int32_t result) { + // TODO: inform the user of success/failure. + if (result != PP_OK) { + NOTREACHED(); + } +} + +std::string OutOfProcessInstance::ShowFileSelectionDialog() { + // Seems like very low priority to implement, since the pdf has no way to get + // the file data anyways. Javascript doesn't let you do this synchronously. + NOTREACHED(); + return std::string(); +} + +pp::URLLoader OutOfProcessInstance::CreateURLLoader() { + return CreateURLLoaderInternal(); +} + +void OutOfProcessInstance::ScheduleCallback(int id, int delay_in_ms) { + pp::CompletionCallback callback = + timer_factory_.NewCallback(&OutOfProcessInstance::OnClientTimerFired); + pp::Module::Get()->core()->CallOnMainThread(delay_in_ms, callback, id); +} + +void OutOfProcessInstance::SearchString(const base::char16* string, + const base::char16* term, + bool case_sensitive, + std::vector<SearchStringResult>* results) { + PP_PrivateFindResult* pp_results; + int count = 0; + pp::PDF::SearchString( + this, + reinterpret_cast<const unsigned short*>(string), + reinterpret_cast<const unsigned short*>(term), + case_sensitive, + &pp_results, + &count); + + results->resize(count); + for (int i = 0; i < count; ++i) { + (*results)[i].start_index = pp_results[i].start_index; + (*results)[i].length = pp_results[i].length; + } + + pp::Memory_Dev memory; + memory.MemFree(pp_results); +} + +void OutOfProcessInstance::DocumentPaintOccurred() { +} + +void OutOfProcessInstance::DocumentLoadComplete(int page_count) { + // Clear focus state for OSK. + FormTextFieldFocusChange(false); + + DCHECK(document_load_state_ == LOAD_STATE_LOADING); + document_load_state_ = LOAD_STATE_COMPLETE; + UserMetricsRecordAction("PDF.LoadSuccess"); + + // Note: If we are in print preview mode the scroll location is retained + // across document loads so we don't want to scroll again and override it. + if (!IsPrintPreview()) { + int initial_page = GetInitialPage(url_); + if (initial_page >= 0) + ScrollToPage(initial_page); + } else { + AppendBlankPrintPreviewPages(); + OnGeometryChanged(0, 0); + } + + pp::VarDictionary message; + message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType)); + message.Set(pp::Var(kJSProgressPercentage), pp::Var(100)) ; + PostMessage(message); + + if (!full_) + return; + + pp::PDF::DidStopLoading(this); + + int content_restrictions = + CONTENT_RESTRICTION_CUT | CONTENT_RESTRICTION_PASTE; + if (!engine_->HasPermission(PDFEngine::PERMISSION_COPY)) + content_restrictions |= CONTENT_RESTRICTION_COPY; + + if (!engine_->HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY) && + !engine_->HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) { + printing_enabled_ = false; + } + + pp::PDF::SetContentRestriction(this, content_restrictions); + + uma_.HistogramCustomCounts("PDF.PageCount", page_count, + 1, 1000000, 50); +} + +void OutOfProcessInstance::RotateClockwise() { + engine_->RotateClockwise(); +} + +void OutOfProcessInstance::RotateCounterclockwise() { + engine_->RotateCounterclockwise(); +} + +void OutOfProcessInstance::PreviewDocumentLoadComplete() { + if (preview_document_load_state_ != LOAD_STATE_LOADING || + preview_pages_info_.empty()) { + return; + } + + preview_document_load_state_ = LOAD_STATE_COMPLETE; + + int dest_page_index = preview_pages_info_.front().second; + int src_page_index = + ExtractPrintPreviewPageIndex(preview_pages_info_.front().first); + if (src_page_index > 0 && dest_page_index > -1 && preview_engine_.get()) + engine_->AppendPage(preview_engine_.get(), dest_page_index); + + preview_pages_info_.pop(); + // |print_preview_page_count_| is not updated yet. Do not load any + // other preview pages till we get this information. + if (print_preview_page_count_ == 0) + return; + + if (preview_pages_info_.size()) + LoadAvailablePreviewPage(); +} + +void OutOfProcessInstance::DocumentLoadFailed() { + DCHECK(document_load_state_ == LOAD_STATE_LOADING); + UserMetricsRecordAction("PDF.LoadFailure"); + + if (full_) + pp::PDF::DidStopLoading(this); + document_load_state_ = LOAD_STATE_FAILED; + + paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_)); + + // Send a progress value of -1 to indicate a failure. + pp::VarDictionary message; + message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType)); + message.Set(pp::Var(kJSProgressPercentage), pp::Var(-1)) ; + PostMessage(message); +} + +void OutOfProcessInstance::PreviewDocumentLoadFailed() { + UserMetricsRecordAction("PDF.PreviewDocumentLoadFailure"); + if (preview_document_load_state_ != LOAD_STATE_LOADING || + preview_pages_info_.empty()) { + return; + } + + preview_document_load_state_ = LOAD_STATE_FAILED; + preview_pages_info_.pop(); + + if (preview_pages_info_.size()) + LoadAvailablePreviewPage(); +} + +pp::Instance* OutOfProcessInstance::GetPluginInstance() { + return this; +} + +void OutOfProcessInstance::DocumentHasUnsupportedFeature( + const std::string& feature) { + std::string metric("PDF_Unsupported_"); + metric += feature; + if (!unsupported_features_reported_.count(metric)) { + unsupported_features_reported_.insert(metric); + UserMetricsRecordAction(metric); + } + + // Since we use an info bar, only do this for full frame plugins.. + if (!full_) + return; + + if (told_browser_about_unsupported_feature_) + return; + told_browser_about_unsupported_feature_ = true; + + pp::PDF::HasUnsupportedFeature(this); +} + +void OutOfProcessInstance::DocumentLoadProgress(uint32 available, + uint32 doc_size) { + double progress = 0.0; + if (doc_size == 0) { + // Document size is unknown. Use heuristics. + // We'll make progress logarithmic from 0 to 100M. + static const double kFactor = log(100000000.0) / 100.0; + if (available > 0) { + progress = log(static_cast<double>(available)) / kFactor; + if (progress > 100.0) + progress = 100.0; + } + } else { + progress = 100.0 * static_cast<double>(available) / doc_size; + } + + // We send 100% load progress in DocumentLoadComplete. + if (progress >= 100) + return; + + // Avoid sending too many progress messages over PostMessage. + if (progress > last_progress_sent_ + 1) { + last_progress_sent_ = progress; + pp::VarDictionary message; + message.Set(pp::Var(kType), pp::Var(kJSLoadProgressType)); + message.Set(pp::Var(kJSProgressPercentage), pp::Var(progress)) ; + PostMessage(message); + } +} + +void OutOfProcessInstance::FormTextFieldFocusChange(bool in_focus) { + if (!text_input_.get()) + return; + if (in_focus) + text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_TEXT); + else + text_input_->SetTextInputType(PP_TEXTINPUT_TYPE_DEV_NONE); +} + +void OutOfProcessInstance::ResetRecentlySentFindUpdate(int32_t /* unused */) { + recently_sent_find_update_ = false; +} + +void OutOfProcessInstance::OnGeometryChanged(double old_zoom, + float old_device_scale) { + if (zoom_ != old_zoom || device_scale_ != old_device_scale) + engine_->ZoomUpdated(zoom_ * device_scale_); + + available_area_ = pp::Rect(plugin_size_); + int doc_width = GetDocumentPixelWidth(); + if (doc_width < available_area_.width()) { + available_area_.Offset((available_area_.width() - doc_width) / 2, 0); + available_area_.set_width(doc_width); + } + int doc_height = GetDocumentPixelHeight(); + if (doc_height < available_area_.height()) { + available_area_.set_height(doc_height); + } + + CalculateBackgroundParts(); + engine_->PageOffsetUpdated(available_area_.point()); + engine_->PluginSizeUpdated(available_area_.size()); + + if (!document_size_.GetArea()) + return; + paint_manager_.InvalidateRect(pp::Rect(pp::Point(), plugin_size_)); +} + +void OutOfProcessInstance::LoadUrl(const std::string& url) { + LoadUrlInternal(url, &embed_loader_, &OutOfProcessInstance::DidOpen); +} + +void OutOfProcessInstance::LoadPreviewUrl(const std::string& url) { + LoadUrlInternal(url, &embed_preview_loader_, + &OutOfProcessInstance::DidOpenPreview); +} + +void OutOfProcessInstance::LoadUrlInternal( + const std::string& url, + pp::URLLoader* loader, + void (OutOfProcessInstance::* method)(int32_t)) { + pp::URLRequestInfo request(this); + request.SetURL(url); + request.SetMethod("GET"); + + *loader = CreateURLLoaderInternal(); + pp::CompletionCallback callback = loader_factory_.NewCallback(method); + int rv = loader->Open(request, callback); + if (rv != PP_OK_COMPLETIONPENDING) + callback.Run(rv); +} + +pp::URLLoader OutOfProcessInstance::CreateURLLoaderInternal() { + if (full_) { + pp::PDF::DidStartLoading(this); + + // Disable save and print until the document is fully loaded, since they + // would generate an incomplete document. Need to do this each time we + // call DidStartLoading since that resets the content restrictions. + pp::PDF::SetContentRestriction(this, CONTENT_RESTRICTION_SAVE | + CONTENT_RESTRICTION_PRINT); + } + + pp::URLLoader loader(this); + + const PPB_URLLoaderTrusted* trusted_interface = + reinterpret_cast<const PPB_URLLoaderTrusted*>( + pp::Module::Get()->GetBrowserInterface( + PPB_URLLOADERTRUSTED_INTERFACE)); + if (trusted_interface) + trusted_interface->GrantUniversalAccess(loader.pp_resource()); + return loader; +} + +int OutOfProcessInstance::GetInitialPage(const std::string& url) { +#if defined(OS_NACL) + return -1; +#else + size_t found_idx = url.find('#'); + if (found_idx == std::string::npos) + return -1; + + const std::string& ref = url.substr(found_idx + 1); + std::vector<std::string> fragments; + Tokenize(ref, kDelimiters, &fragments); + + // Page number to return, zero-based. + int page = -1; + + // Handle the case of http://foo.com/bar#NAMEDDEST. This is not explicitly + // mentioned except by example in the Adobe "PDF Open Parameters" document. + if ((fragments.size() == 1) && (fragments[0].find('=') == std::string::npos)) + return engine_->GetNamedDestinationPage(fragments[0]); + + for (size_t i = 0; i < fragments.size(); ++i) { + std::vector<std::string> key_value; + base::SplitString(fragments[i], '=', &key_value); + if (key_value.size() != 2) + continue; + const std::string& key = key_value[0]; + const std::string& value = key_value[1]; + + if (base::strcasecmp(kPage, key.c_str()) == 0) { + // |page_value| is 1-based. + int page_value = -1; + if (base::StringToInt(value, &page_value) && page_value > 0) + page = page_value - 1; + continue; + } + if (base::strcasecmp(kNamedDest, key.c_str()) == 0) { + // |page_value| is 0-based. + int page_value = engine_->GetNamedDestinationPage(value); + if (page_value >= 0) + page = page_value; + continue; + } + } + return page; +#endif +} + +void OutOfProcessInstance::SetZoom(double scale) { + double old_zoom = zoom_; + zoom_ = scale; + OnGeometryChanged(old_zoom, device_scale_); +} + +std::string OutOfProcessInstance::GetLocalizedString(PP_ResourceString id) { + pp::Var rv(pp::PDF::GetLocalizedString(this, id)); + if (!rv.is_string()) + return std::string(); + + return rv.AsString(); +} + +void OutOfProcessInstance::AppendBlankPrintPreviewPages() { + if (print_preview_page_count_ == 0) + return; + engine_->AppendBlankPages(print_preview_page_count_); + if (preview_pages_info_.size() > 0) + LoadAvailablePreviewPage(); +} + +bool OutOfProcessInstance::IsPrintPreview() { + return IsPrintPreviewUrl(url_); +} + +void OutOfProcessInstance::ProcessPreviewPageInfo(const std::string& url, + int dst_page_index) { + if (!IsPrintPreview()) + return; + + int src_page_index = ExtractPrintPreviewPageIndex(url); + if (src_page_index < 1) + return; + + preview_pages_info_.push(std::make_pair(url, dst_page_index)); + LoadAvailablePreviewPage(); +} + +void OutOfProcessInstance::LoadAvailablePreviewPage() { + if (preview_pages_info_.size() <= 0 || + document_load_state_ != LOAD_STATE_COMPLETE) { + return; + } + + std::string url = preview_pages_info_.front().first; + int dst_page_index = preview_pages_info_.front().second; + int src_page_index = ExtractPrintPreviewPageIndex(url); + if (src_page_index < 1 || + dst_page_index >= print_preview_page_count_ || + preview_document_load_state_ == LOAD_STATE_LOADING) { + return; + } + + preview_document_load_state_ = LOAD_STATE_LOADING; + LoadPreviewUrl(url); +} + +void OutOfProcessInstance::UserMetricsRecordAction( + const std::string& action) { + // TODO(raymes): Move this function to PPB_UMA_Private. + pp::PDF::UserMetricsRecordAction(this, pp::Var(action)); +} + +} // namespace chrome_pdf diff --git a/pdf/out_of_process_instance.h b/pdf/out_of_process_instance.h new file mode 100644 index 0000000..c4b241c --- /dev/null +++ b/pdf/out_of_process_instance.h @@ -0,0 +1,338 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_OUT_OF_PROCESS_INSTANCE_H_ +#define PDF_OUT_OF_PROCESS_INSTANCE_H_ + +#include <queue> +#include <set> +#include <string> +#include <utility> +#include <vector> + +#include "base/memory/scoped_ptr.h" +#include "pdf/paint_manager.h" +#include "pdf/pdf_engine.h" +#include "pdf/preview_mode_client.h" + +#include "ppapi/c/private/ppb_pdf.h" +#include "ppapi/cpp/dev/printing_dev.h" +#include "ppapi/cpp/dev/scriptable_object_deprecated.h" +#include "ppapi/cpp/dev/selection_dev.h" +#include "ppapi/cpp/graphics_2d.h" +#include "ppapi/cpp/image_data.h" +#include "ppapi/cpp/input_event.h" +#include "ppapi/cpp/private/find_private.h" +#include "ppapi/cpp/private/instance_private.h" +#include "ppapi/cpp/private/uma_private.h" +#include "ppapi/cpp/private/var_private.h" +#include "ppapi/cpp/url_loader.h" +#include "ppapi/utility/completion_callback_factory.h" + +namespace pp { +class TextInput_Dev; +} + +namespace chrome_pdf { + +class OutOfProcessInstance : public pp::InstancePrivate, + public pp::Find_Private, + public pp::Printing_Dev, + public pp::Selection_Dev, + public PaintManager::Client, + public PDFEngine::Client, + public PreviewModeClient::Client { + public: + explicit OutOfProcessInstance(PP_Instance instance); + virtual ~OutOfProcessInstance(); + + // pp::Instance implementation. + virtual bool Init(uint32_t argc, + const char* argn[], + const char* argv[]) OVERRIDE; + virtual void HandleMessage(const pp::Var& message) OVERRIDE; + virtual bool HandleInputEvent(const pp::InputEvent& event) OVERRIDE; + virtual void DidChangeView(const pp::View& view) OVERRIDE; + virtual pp::Var GetInstanceObject() OVERRIDE; + + // pp::Find_Private implementation. + virtual bool StartFind(const std::string& text, bool case_sensitive) OVERRIDE; + virtual void SelectFindResult(bool forward) OVERRIDE; + virtual void StopFind() OVERRIDE; + + // pp::PaintManager::Client implementation. + virtual void OnPaint(const std::vector<pp::Rect>& paint_rects, + std::vector<PaintManager::ReadyRect>* ready, + std::vector<pp::Rect>* pending) OVERRIDE; + + // pp::Printing_Dev implementation. + virtual uint32_t QuerySupportedPrintOutputFormats() OVERRIDE; + virtual int32_t PrintBegin( + const PP_PrintSettings_Dev& print_settings) OVERRIDE; + virtual pp::Resource PrintPages( + const PP_PrintPageNumberRange_Dev* page_ranges, + uint32_t page_range_count) OVERRIDE; + virtual void PrintEnd() OVERRIDE; + virtual bool IsPrintScalingDisabled() OVERRIDE; + + // pp::Private implementation. + virtual pp::Var GetLinkAtPosition(const pp::Point& point); + + // PPP_Selection_Dev implementation. + virtual pp::Var GetSelectedText(bool html) OVERRIDE; + + void FlushCallback(int32_t result); + void DidOpen(int32_t result); + void DidOpenPreview(int32_t result); + + // Called when the timer is fired. + void OnClientTimerFired(int32_t id); + + // Called to print without re-entrancy issues. + void OnPrint(int32_t); + + // PDFEngine::Client implementation. + virtual void DocumentSizeUpdated(const pp::Size& size); + virtual void Invalidate(const pp::Rect& rect); + virtual void Scroll(const pp::Point& point); + virtual void ScrollToX(int position); + virtual void ScrollToY(int position); + virtual void ScrollToPage(int page); + virtual void NavigateTo(const std::string& url, bool open_in_new_tab); + virtual void UpdateCursor(PP_CursorType_Dev cursor); + virtual void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks); + virtual void NotifyNumberOfFindResultsChanged(int total, bool final_result); + virtual void NotifySelectedFindResultChanged(int current_find_index); + virtual void GetDocumentPassword( + pp::CompletionCallbackWithOutput<pp::Var> callback); + virtual void Alert(const std::string& message); + virtual bool Confirm(const std::string& message); + virtual std::string Prompt(const std::string& question, + const std::string& default_answer); + virtual std::string GetURL(); + virtual void Email(const std::string& to, + const std::string& cc, + const std::string& bcc, + const std::string& subject, + const std::string& body); + virtual void Print(); + virtual void SubmitForm(const std::string& url, + const void* data, + int length); + virtual std::string ShowFileSelectionDialog(); + virtual pp::URLLoader CreateURLLoader(); + virtual void ScheduleCallback(int id, int delay_in_ms); + virtual void SearchString(const base::char16* string, + const base::char16* term, + bool case_sensitive, + std::vector<SearchStringResult>* results); + virtual void DocumentPaintOccurred(); + virtual void DocumentLoadComplete(int page_count); + virtual void DocumentLoadFailed(); + virtual pp::Instance* GetPluginInstance(); + virtual void DocumentHasUnsupportedFeature(const std::string& feature); + virtual void DocumentLoadProgress(uint32 available, uint32 doc_size); + virtual void FormTextFieldFocusChange(bool in_focus); + virtual bool IsPrintPreview(); + + // PreviewModeClient::Client implementation. + virtual void PreviewDocumentLoadComplete() OVERRIDE; + virtual void PreviewDocumentLoadFailed() OVERRIDE; + + // Helper functions for implementing PPP_PDF. + void RotateClockwise(); + void RotateCounterclockwise(); + + private: + void ResetRecentlySentFindUpdate(int32_t); + + // Called whenever the plugin geometry changes to update the location of the + // background parts, and notifies the pdf engine. + void OnGeometryChanged(double old_zoom, float old_device_scale); + + // Figures out the location of any background rectangles (i.e. those that + // aren't painted by the PDF engine). + void CalculateBackgroundParts(); + + // Computes document width/height in device pixels, based on current zoom and + // device scale + int GetDocumentPixelWidth() const; + int GetDocumentPixelHeight() const; + + // Draws a rectangle with the specified dimensions and color in our buffer. + void FillRect(const pp::Rect& rect, unsigned int color); + + void LoadUrl(const std::string& url); + void LoadPreviewUrl(const std::string& url); + void LoadUrlInternal(const std::string& url, pp::URLLoader* loader, + void (OutOfProcessInstance::* method)(int32_t)); + + // Creates a URL loader and allows it to access all urls, i.e. not just the + // frame's origin. + pp::URLLoader CreateURLLoaderInternal(); + + // Figure out the initial page to display based on #page=N and #nameddest=foo + // in the |url_|. + // Returns -1 if there is no valid fragment. The returned value is 0-based, + // whereas page=N is 1-based. + int GetInitialPage(const std::string& url); + + void FormDidOpen(int32_t result); + + std::string GetLocalizedString(PP_ResourceString id); + + void UserMetricsRecordAction(const std::string& action); + + enum DocumentLoadState { + LOAD_STATE_LOADING, + LOAD_STATE_COMPLETE, + LOAD_STATE_FAILED, + }; + + // Set new zoom scale. + void SetZoom(double scale); + + // Reduces the document to 1 page and appends |print_preview_page_count_| + // blank pages to the document for print preview. + void AppendBlankPrintPreviewPages(); + + // Process the preview page data information. |src_url| specifies the preview + // page data location. The |src_url| is in the format: + // chrome://print/id/page_number/print.pdf + // |dst_page_index| specifies the blank page index that needs to be replaced + // with the new page data. + void ProcessPreviewPageInfo(const std::string& src_url, int dst_page_index); + // Load the next available preview page into the blank page. + void LoadAvailablePreviewPage(); + + pp::ImageData image_data_; + // Used when the plugin is embedded in a page and we have to create the loader + // ourself. + pp::CompletionCallbackFactory<OutOfProcessInstance> loader_factory_; + pp::URLLoader embed_loader_; + pp::URLLoader embed_preview_loader_; + + PP_CursorType_Dev cursor_; // The current cursor. + + pp::CompletionCallbackFactory<OutOfProcessInstance> timer_factory_; + + // Size, in pixels, of plugin rectangle. + pp::Size plugin_size_; + // Size, in DIPs, of plugin rectangle. + pp::Size plugin_dip_size_; + // Remaining area, in pixels, to render the pdf in after accounting for + // horizontal centering. + pp::Rect available_area_; + // Size of entire document in pixels (i.e. if each page is 800 pixels high and + // there are 10 pages, the height will be 8000). + pp::Size document_size_; + + double zoom_; // Current zoom factor. + + float device_scale_; // Current device scale factor. + bool printing_enabled_; + // True if the plugin is full-page. + bool full_; + + PaintManager paint_manager_; + + struct BackgroundPart { + pp::Rect location; + unsigned int color; + }; + std::vector<BackgroundPart> background_parts_; + + struct PrintSettings { + PrintSettings() { + Clear(); + } + void Clear() { + is_printing = false; + print_pages_called_ = false; + memset(&pepper_print_settings, 0, sizeof(pepper_print_settings)); + } + // This is set to true when PrintBegin is called and false when PrintEnd is + // called. + bool is_printing; + // To know whether this was an actual print operation, so we don't double + // count UMA logging. + bool print_pages_called_; + PP_PrintSettings_Dev pepper_print_settings; + }; + + PrintSettings print_settings_; + + scoped_ptr<PDFEngine> engine_; + + // This engine is used to render the individual preview page data. This is + // used only in print preview mode. This will use |PreviewModeClient| + // interface which has very limited access to the pp::Instance. + scoped_ptr<PDFEngine> preview_engine_; + + std::string url_; + + // Used for submitting forms. + pp::CompletionCallbackFactory<OutOfProcessInstance> form_factory_; + pp::URLLoader form_loader_; + + // Used for printing without re-entrancy issues. + pp::CompletionCallbackFactory<OutOfProcessInstance> print_callback_factory_; + + // True if we haven't painted the plugin viewport yet. + bool first_paint_; + + DocumentLoadState document_load_state_; + DocumentLoadState preview_document_load_state_; + + // JavaScript interface to control this instance. + // This wraps a PDFScriptableObject in a pp::Var. + pp::VarPrivate instance_object_; + + // A UMA resource for histogram reporting. + pp::UMAPrivate uma_; + + // Used so that we only tell the browser once about an unsupported feature, to + // avoid the infobar going up more than once. + bool told_browser_about_unsupported_feature_; + + // Keeps track of which unsupported features we reported, so we avoid spamming + // the stats if a feature shows up many times per document. + std::set<std::string> unsupported_features_reported_; + + // Number of pages in print preview mode, 0 if not in print preview mode. + int print_preview_page_count_; + std::vector<int> print_preview_page_numbers_; + + // Used to manage loaded print preview page information. A |PreviewPageInfo| + // consists of data source url string and the page index in the destination + // document. + typedef std::pair<std::string, int> PreviewPageInfo; + std::queue<PreviewPageInfo> preview_pages_info_; + + // Used to signal the browser about focus changes to trigger the OSK. + // TODO(abodenha@chromium.org) Implement full IME support in the plugin. + // http://crbug.com/132565 + scoped_ptr<pp::TextInput_Dev> text_input_; + + // The last document load progress value sent to the web page. + double last_progress_sent_; + + // Whether an update to the number of find results found was sent less than + // |kFindResultCooldownMs| milliseconds ago. + bool recently_sent_find_update_; + + // The tickmarks. + std::vector<pp::Rect> tickmarks_; + + // Whether the plugin has received a viewport changed message. Nothing should + // be painted until this is received. + bool received_viewport_message_; + + // The callback for receiving the password from the page. + scoped_ptr<pp::CompletionCallbackWithOutput<pp::Var> > password_callback_; +}; + +} // namespace chrome_pdf + +#endif // PDF_OUT_OF_PROCESS_INSTANCE_H_ diff --git a/pdf/page_indicator.cc b/pdf/page_indicator.cc new file mode 100644 index 0000000..6177074 --- /dev/null +++ b/pdf/page_indicator.cc @@ -0,0 +1,126 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/page_indicator.h" + +#include "base/logging.h" +#include "base/strings/string_util.h" +#include "pdf/draw_utils.h" +#include "pdf/number_image_generator.h" +#include "pdf/resource_consts.h" + +namespace chrome_pdf { + + +PageIndicator::PageIndicator() + : current_page_(0), + splash_timeout_(kPageIndicatorSplashTimeoutMs), + fade_timeout_(kPageIndicatorScrollFadeTimeoutMs), + always_visible_(false) { +} + +PageIndicator::~PageIndicator() { +} + +bool PageIndicator::CreatePageIndicator( + uint32 id, + bool visible, + Control::Owner* delegate, + NumberImageGenerator* number_image_generator, + bool always_visible) { + number_image_generator_ = number_image_generator; + always_visible_ = always_visible; + + pp::Rect rc; + bool res = Control::Create(id, rc, visible, delegate); + return res; +} + +void PageIndicator::Configure(const pp::Point& origin, + const pp::ImageData& background) { + background_ = background; + pp::Rect rc(origin, background_.size()); + Control::SetRect(rc, false); +} + +void PageIndicator::set_current_page(int current_page) { + if (current_page_ < 0) + return; + + current_page_ = current_page; +} + +void PageIndicator::Paint(pp::ImageData* image_data, const pp::Rect& rc) { + if (!visible()) + return; + + pp::Rect draw_rc = rc.Intersect(rect()); + if (draw_rc.IsEmpty()) + return; + + // Copying the background image to a temporary buffer. + pp::ImageData buffer(owner()->GetInstance(), background_.format(), + background_.size(), false); + CopyImage(background_, pp::Rect(background_.size()), + &buffer, pp::Rect(background_.size()), false); + + // Creating the page number image. + pp::ImageData page_number_image; + number_image_generator_->GenerateImage(current_page_, &page_number_image); + + pp::Point origin2( + (buffer.size().width() - page_number_image.size().width()) / 2.5, + (buffer.size().height() - page_number_image.size().height()) / 2); + + // Drawing page number image on the buffer. + if (origin2.x() > 0 && origin2.y() > 0) { + CopyImage(page_number_image, + pp::Rect(pp::Point(), page_number_image.size()), + &buffer, + pp::Rect(origin2, page_number_image.size()), + false); + } + + // Drawing the buffer. + pp::Point origin = draw_rc.point(); + draw_rc.Offset(-rect().x(), -rect().y()); + AlphaBlend(buffer, draw_rc, image_data, origin, transparency()); +} + +void PageIndicator::OnTimerFired(uint32 timer_id) { + FadingControl::OnTimerFired(timer_id); + if (timer_id == fade_out_timer_id_) { + Fade(false, fade_timeout_); + } +} + +void PageIndicator::ResetFadeOutTimer() { + fade_out_timer_id_ = + owner()->ScheduleTimer(id(), splash_timeout_); +} + +void PageIndicator::OnFadeInComplete() { + if (!always_visible_) + ResetFadeOutTimer(); +} + +void PageIndicator::Splash() { + Splash(kPageIndicatorSplashTimeoutMs, kPageIndicatorScrollFadeTimeoutMs); +} + +void PageIndicator::Splash(uint32 splash_timeout, uint32 fade_timeout) { + splash_timeout_ = splash_timeout; + fade_timeout_ = fade_timeout; + if (!always_visible_) + fade_out_timer_id_ = 0; + Fade(true, fade_timeout_); +} + +int PageIndicator::GetYPosition( + int vertical_scrollbar_y, int document_height, int plugin_height) { + double percent = static_cast<double>(vertical_scrollbar_y) / document_height; + return (plugin_height - rect().height()) * percent; +} + +} // namespace chrome_pdf diff --git a/pdf/page_indicator.h b/pdf/page_indicator.h new file mode 100644 index 0000000..0d06ee1 --- /dev/null +++ b/pdf/page_indicator.h @@ -0,0 +1,72 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PAGE_INDICATOR_H_ +#define PDF_PAGE_INDICATOR_H_ + +#include <string> +#include <vector> + +#include "pdf/control.h" +#include "pdf/fading_control.h" +#include "ppapi/cpp/image_data.h" +#include "ppapi/cpp/point.h" +#include "ppapi/cpp/rect.h" + +namespace chrome_pdf { + +class NumberImageGenerator; + +const uint32 kPageIndicatorScrollFadeTimeoutMs = 240; +const uint32 kPageIndicatorInitialFadeTimeoutMs = 960; +const uint32 kPageIndicatorSplashTimeoutMs = 2000; + +class PageIndicator : public FadingControl { + public: + PageIndicator(); + virtual ~PageIndicator(); + virtual bool CreatePageIndicator( + uint32 id, + bool visible, + Control::Owner* delegate, + NumberImageGenerator* number_image_generator, + bool always_visible); + + void Configure(const pp::Point& origin, const pp::ImageData& background); + + int current_page() const { return current_page_; } + void set_current_page(int current_page); + + virtual void Splash(); + void Splash(uint32 splash_timeout, uint32 page_timeout); + + // Returns the y position where the page indicator should be drawn given the + // position of the scrollbar and the total document height and the plugin + // height. + int GetYPosition( + int vertical_scrollbar_y, int document_height, int plugin_height); + + // Control interface. + virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc); + virtual void OnTimerFired(uint32 timer_id); + + // FadingControl interface. + virtual void OnFadeInComplete(); + + private: + void ResetFadeOutTimer(); + + int current_page_; + pp::ImageData background_; + NumberImageGenerator* number_image_generator_; + uint32 fade_out_timer_id_; + uint32 splash_timeout_; + uint32 fade_timeout_; + + bool always_visible_; +}; + +} // namespace chrome_pdf + +#endif // PDF_PAGE_INDICATOR_H_ diff --git a/pdf/paint_aggregator.cc b/pdf/paint_aggregator.cc new file mode 100644 index 0000000..549cab6 --- /dev/null +++ b/pdf/paint_aggregator.cc @@ -0,0 +1,263 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/paint_aggregator.h" + +#include <algorithm> + +#include "base/logging.h" + +// ---------------------------------------------------------------------------- +// ALGORITHM NOTES +// +// We attempt to maintain a scroll rect in the presence of invalidations that +// are contained within the scroll rect. If an invalidation crosses a scroll +// rect, then we just treat the scroll rect as an invalidation rect. +// +// For invalidations performed prior to scrolling and contained within the +// scroll rect, we offset the invalidation rects to account for the fact that +// the consumer will perform scrolling before painting. +// +// We only support scrolling along one axis at a time. A diagonal scroll will +// therefore be treated as an invalidation. +// ---------------------------------------------------------------------------- + +PaintAggregator::PaintUpdate::PaintUpdate() { +} + +PaintAggregator::PaintUpdate::~PaintUpdate() { +} + +PaintAggregator::InternalPaintUpdate::InternalPaintUpdate() : + synthesized_scroll_damage_rect_(false) { +} + +PaintAggregator::InternalPaintUpdate::~InternalPaintUpdate() { +} + +pp::Rect PaintAggregator::InternalPaintUpdate::GetScrollDamage() const { + // Should only be scrolling in one direction at a time. + DCHECK(!(scroll_delta.x() && scroll_delta.y())); + + pp::Rect damaged_rect; + + // Compute the region we will expose by scrolling, and paint that into a + // shared memory section. + if (scroll_delta.x()) { + int32_t dx = scroll_delta.x(); + damaged_rect.set_y(scroll_rect.y()); + damaged_rect.set_height(scroll_rect.height()); + if (dx > 0) { + damaged_rect.set_x(scroll_rect.x()); + damaged_rect.set_width(dx); + } else { + damaged_rect.set_x(scroll_rect.right() + dx); + damaged_rect.set_width(-dx); + } + } else { + int32_t dy = scroll_delta.y(); + damaged_rect.set_x(scroll_rect.x()); + damaged_rect.set_width(scroll_rect.width()); + if (dy > 0) { + damaged_rect.set_y(scroll_rect.y()); + damaged_rect.set_height(dy); + } else { + damaged_rect.set_y(scroll_rect.bottom() + dy); + damaged_rect.set_height(-dy); + } + } + + // In case the scroll offset exceeds the width/height of the scroll rect + return scroll_rect.Intersect(damaged_rect); +} + +PaintAggregator::PaintAggregator() { +} + +bool PaintAggregator::HasPendingUpdate() const { + return !update_.scroll_rect.IsEmpty() || !update_.paint_rects.empty(); +} + +void PaintAggregator::ClearPendingUpdate() { + update_ = InternalPaintUpdate(); +} + +PaintAggregator::PaintUpdate PaintAggregator::GetPendingUpdate() { + // Convert the internal paint update to the external one, which includes a + // bit more precomputed info for the caller. + PaintUpdate ret; + ret.scroll_delta = update_.scroll_delta; + ret.scroll_rect = update_.scroll_rect; + ret.has_scroll = ret.scroll_delta.x() != 0 || ret.scroll_delta.y() != 0; + + // Include the scroll damage (if any) in the paint rects. + // Code invalidates damaged rect here, it pick it up from the list of paint + // rects in the next block. + if (ret.has_scroll && !update_.synthesized_scroll_damage_rect_) { + update_.synthesized_scroll_damage_rect_ = true; + pp::Rect scroll_damage = update_.GetScrollDamage(); + InvalidateRectInternal(scroll_damage, false); + } + + ret.paint_rects.reserve(update_.paint_rects.size() + 1); + for (size_t i = 0; i < update_.paint_rects.size(); i++) + ret.paint_rects.push_back(update_.paint_rects[i]); + + return ret; +} + +void PaintAggregator::SetIntermediateResults( + const std::vector<ReadyRect>& ready, + const std::vector<pp::Rect>& pending) { + update_.ready_rects.insert( + update_.ready_rects.end(), ready.begin(), ready.end()); + update_.paint_rects = pending; +} + +std::vector<PaintAggregator::ReadyRect> PaintAggregator::GetReadyRects() const { + return update_.ready_rects; +} + +void PaintAggregator::InvalidateRect(const pp::Rect& rect) { + InvalidateRectInternal(rect, true); +} + +void PaintAggregator::ScrollRect(const pp::Rect& clip_rect, + const pp::Point& amount) { + // We only support scrolling along one axis at a time. + if (amount.x() != 0 && amount.y() != 0) { + InvalidateRect(clip_rect); + return; + } + + // We can only scroll one rect at a time. + if (!update_.scroll_rect.IsEmpty() && update_.scroll_rect != clip_rect) { + InvalidateRect(clip_rect); + return; + } + + // Again, we only support scrolling along one axis at a time. Make sure this + // update doesn't scroll on a different axis than any existing one. + if ((amount.x() && update_.scroll_delta.y()) || + (amount.y() && update_.scroll_delta.x())) { + InvalidateRect(clip_rect); + return; + } + + // The scroll rect is new or isn't changing (though the scroll amount may + // be changing). + update_.scroll_rect = clip_rect; + update_.scroll_delta += amount; + + // We might have just wiped out a pre-existing scroll. + if (update_.scroll_delta == pp::Point()) { + update_.scroll_rect = pp::Rect(); + return; + } + + // Adjust any paint rects that intersect the scroll. For the portion of the + // paint that is inside the scroll area, move it by the scroll amount and + // replace the existing paint with it. For the portion (if any) that is + // outside the scroll, just invalidate it. + std::vector<pp::Rect> leftover_rects; + for (size_t i = 0; i < update_.paint_rects.size(); ++i) { + if (!update_.scroll_rect.Intersects(update_.paint_rects[i])) + continue; + + pp::Rect intersection = + update_.paint_rects[i].Intersect(update_.scroll_rect); + pp::Rect rect = update_.paint_rects[i]; + while (!rect.IsEmpty()) { + pp::Rect leftover = rect.Subtract(intersection); + if (leftover.IsEmpty()) + break; + // Don't want to call InvalidateRectInternal now since it'll modify + // update_.paint_rects, so keep track of this and do it below. + leftover_rects.push_back(leftover); + rect = rect.Subtract(leftover); + } + + update_.paint_rects[i] = ScrollPaintRect(intersection, amount); + + // The rect may have been scrolled out of view. + if (update_.paint_rects[i].IsEmpty()) { + update_.paint_rects.erase(update_.paint_rects.begin() + i); + i--; + } + } + + for (size_t i = 0; i < leftover_rects.size(); ++i) + InvalidateRectInternal(leftover_rects[i], false); + + for (size_t i = 0; i < update_.ready_rects.size(); ++i) { + if (update_.scroll_rect.Contains(update_.ready_rects[i].rect)) { + update_.ready_rects[i].rect = + ScrollPaintRect(update_.ready_rects[i].rect, amount); + } + } + + if (update_.synthesized_scroll_damage_rect_) { + pp::Rect damage = update_.GetScrollDamage(); + InvalidateRect(damage); + } +} + +pp::Rect PaintAggregator::ScrollPaintRect(const pp::Rect& paint_rect, + const pp::Point& amount) const { + pp::Rect result = paint_rect; + result.Offset(amount); + result = update_.scroll_rect.Intersect(result); + return result; +} + +void PaintAggregator::InvalidateScrollRect() { + pp::Rect scroll_rect = update_.scroll_rect; + update_.scroll_rect = pp::Rect(); + update_.scroll_delta = pp::Point(); + InvalidateRect(scroll_rect); +} + +void PaintAggregator::InvalidateRectInternal(const pp::Rect& rect_old, + bool check_scroll) { + pp::Rect rect = rect_old; + // Check if any rects that are ready to be painted overlap. + for (size_t i = 0; i < update_.ready_rects.size(); ++i) { + const pp::Rect& existing_rect = update_.ready_rects[i].rect; + if (rect.Intersects(existing_rect)) { + // Re-invalidate in case the union intersects other paint rects. + rect = existing_rect.Union(rect); + update_.ready_rects.erase(update_.ready_rects.begin() + i); + break; + } + } + + bool add_paint = true; + + // Combine overlapping paints using smallest bounding box. + for (size_t i = 0; i < update_.paint_rects.size(); ++i) { + const pp::Rect& existing_rect = update_.paint_rects[i]; + if (existing_rect.Contains(rect)) // Optimize out redundancy. + add_paint = false; + if (rect.Intersects(existing_rect) || rect.SharesEdgeWith(existing_rect)) { + // Re-invalidate in case the union intersects other paint rects. + pp::Rect combined_rect = existing_rect.Union(rect); + update_.paint_rects.erase(update_.paint_rects.begin() + i); + InvalidateRectInternal(combined_rect, check_scroll); + add_paint = false; + } + } + + if (add_paint) { + // Add a non-overlapping paint. + update_.paint_rects.push_back(rect); + } + + // If the new paint overlaps with a scroll, then also invalidate the rect in + // its new position. + if (check_scroll && + !update_.scroll_rect.IsEmpty() && + update_.scroll_rect.Intersects(rect)) { + InvalidateRectInternal(ScrollPaintRect(rect, update_.scroll_delta), false); + } +} diff --git a/pdf/paint_aggregator.h b/pdf/paint_aggregator.h new file mode 100644 index 0000000..96f61e0 --- /dev/null +++ b/pdf/paint_aggregator.h @@ -0,0 +1,130 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PAINT_AGGREGATOR_H_ +#define PDF_PAINT_AGGREGATOR_H_ + +#include <vector> + +#include "ppapi/cpp/image_data.h" +#include "ppapi/cpp/rect.h" +#include "ppapi/cpp/rect.h" + +// This class is responsible for aggregating multiple invalidation and scroll +// commands to produce a scroll and repaint sequence. You can use this manually +// to track your updates, but most applications will use the PaintManager to +// additionally handle the necessary callbacks on top of the PaintAggregator +// functionality. +// +// See http://code.google.com/p/ppapi/wiki/2DPaintingModel +class PaintAggregator { + public: + // Stores information about a rectangle that has finished painting. The + // PaintManager will paint it only when everything else on the screen is also + // ready. + struct ReadyRect { + pp::Point offset; + pp::Rect rect; + pp::ImageData image_data; + }; + + struct PaintUpdate { + PaintUpdate(); + ~PaintUpdate(); + + // True if there is a scroll applied. This indicates that the scroll delta + // and scroll_rect are nonzero (just as a convenience). + bool has_scroll; + + // The amount to scroll by. Either the X or Y may be nonzero to indicate a + // scroll in that direction, but there will never be a scroll in both + // directions at the same time (this will be converted to a paint of the + // region instead). + // + // If there is no scroll, this will be (0, 0). + pp::Point scroll_delta; + + // The rectangle that should be scrolled by the scroll_delta. If there is no + // scroll, this will be (0, 0, 0, 0). We only track one scroll command at + // once. If there are multiple ones, they will be converted to invalidates. + pp::Rect scroll_rect; + + // A list of all the individual dirty rectangles. This is an aggregated list + // of all invalidate calls. Different rectangles may be unified to produce a + // minimal list with no overlap that is more efficient to paint. This list + // also contains the region exposed by any scroll command. + std::vector<pp::Rect> paint_rects; + }; + + PaintAggregator(); + + // There is a PendingUpdate if InvalidateRect or ScrollRect were called and + // ClearPendingUpdate was not called. + bool HasPendingUpdate() const; + void ClearPendingUpdate(); + + PaintUpdate GetPendingUpdate(); + + // Sets the result of a call to the plugin to paint. This includes rects that + // are finished painting (ready), and ones that are still in-progress + // (pending). + void SetIntermediateResults(const std::vector<ReadyRect>& ready, + const std::vector<pp::Rect>& pending); + + // Returns the rectangles that are ready to be painted. + std::vector<ReadyRect> GetReadyRects() const; + + // The given rect should be repainted. + void InvalidateRect(const pp::Rect& rect); + + // The given rect should be scrolled by the given amounts. + void ScrollRect(const pp::Rect& clip_rect, const pp::Point& amount); + + private: + // This structure is an internal version of PaintUpdate. It's different in + // two respects: + // + // - The scroll damange (area exposed by the scroll operation, if any) is + // maintained separately from the dirty rects generated by calling + // InvalidateRect. We need to know this distinction for some operations. + // + // - The paint bounds union is computed on the fly so we don't have to keep + // a rectangle up-to-date as we do different operations. + class InternalPaintUpdate { + public: + InternalPaintUpdate(); + ~InternalPaintUpdate(); + + // Computes the rect damaged by scrolling within |scroll_rect| by + // |scroll_delta|. This rect must be repainted. It is not included in + // paint_rects. + pp::Rect GetScrollDamage() const; + + pp::Point scroll_delta; + pp::Rect scroll_rect; + + // Does not include the scroll damage rect unless + // synthesized_scroll_damage_rect_ is set. + std::vector<pp::Rect> paint_rects; + + // Rectangles that are finished painting. + std::vector<ReadyRect> ready_rects; + + // Whether we have added the scroll damage rect to paint_rects yet or not. + bool synthesized_scroll_damage_rect_; + }; + + pp::Rect ScrollPaintRect(const pp::Rect& paint_rect, + const pp::Point& amount) const; + void InvalidateScrollRect(); + + // Internal method used by InvalidateRect. If |check_scroll| is true, then the + // method checks if there's a pending scroll and if so also invalidates |rect| + // in the new scroll position. + void InvalidateRectInternal(const pp::Rect& rect, bool check_scroll); + + InternalPaintUpdate update_; +}; + +#endif // PDF_PAINT_AGGREGATOR_H_ diff --git a/pdf/paint_manager.cc b/pdf/paint_manager.cc new file mode 100644 index 0000000..093e0cd --- /dev/null +++ b/pdf/paint_manager.cc @@ -0,0 +1,296 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/paint_manager.h" + +#include <algorithm> + +#include "base/logging.h" +#include "ppapi/c/pp_errors.h" +#include "ppapi/cpp/instance.h" +#include "ppapi/cpp/module.h" + +PaintManager::PaintManager(pp::Instance* instance, + Client* client, + bool is_always_opaque) + : instance_(instance), + client_(client), + is_always_opaque_(is_always_opaque), + callback_factory_(NULL), + manual_callback_pending_(false), + flush_pending_(false), + has_pending_resize_(false), + graphics_need_to_be_bound_(false), + pending_device_scale_(1.0), + device_scale_(1.0), + in_paint_(false), + first_paint_(true), + view_size_changed_waiting_for_paint_(false) { + // Set the callback object outside of the initializer list to avoid a + // compiler warning about using "this" in an initializer list. + callback_factory_.Initialize(this); + + // You can not use a NULL client pointer. + DCHECK(client); +} + +PaintManager::~PaintManager() { +} + +// static +pp::Size PaintManager::GetNewContextSize(const pp::Size& current_context_size, + const pp::Size& plugin_size) { + // The number of additional space in pixels to allocate to the right/bottom + // of the context. + const int kBufferSize = 100; + + // Default to returning the same size. + pp::Size result = current_context_size; + + pp::Size min_size(std::max(current_context_size.width() - kBufferSize, 0), + std::max(current_context_size.height() - kBufferSize, 0)); + // If the plugin size is bigger than the current context size, we need to + // resize the context. If the plugin size is smaller than the current + // context size by a given threshhold then resize the context so that we + // aren't wasting too much memory. + if (plugin_size.width() > current_context_size.width() || + plugin_size.height() > current_context_size.height() || + plugin_size.width() < min_size.width() || + plugin_size.height() < min_size.height()) { + // Create a larger context than needed so that if we only resize by a + // small margin, we don't need a new context. + result = pp::Size(plugin_size.width() + kBufferSize, + plugin_size.height() + kBufferSize); + } + + return result; +} + +void PaintManager::Initialize(pp::Instance* instance, + Client* client, + bool is_always_opaque) { + DCHECK(!instance_ && !client_); // Can't initialize twice. + instance_ = instance; + client_ = client; + is_always_opaque_ = is_always_opaque; +} + +void PaintManager::SetSize(const pp::Size& new_size, float device_scale) { + if (GetEffectiveSize() == new_size && + GetEffectiveDeviceScale() == device_scale) + return; + + has_pending_resize_ = true; + pending_size_ = new_size; + pending_device_scale_ = device_scale; + + view_size_changed_waiting_for_paint_ = true; + + Invalidate(); +} + +void PaintManager::Invalidate() { + // You must call SetSize before using. + DCHECK(!graphics_.is_null() || has_pending_resize_); + + EnsureCallbackPending(); + aggregator_.InvalidateRect(pp::Rect(GetEffectiveSize())); +} + +void PaintManager::InvalidateRect(const pp::Rect& rect) { + DCHECK(!in_paint_); + + // You must call SetSize before using. + DCHECK(!graphics_.is_null() || has_pending_resize_); + + // Clip the rect to the device area. + pp::Rect clipped_rect = rect.Intersect(pp::Rect(GetEffectiveSize())); + if (clipped_rect.IsEmpty()) + return; // Nothing to do. + + EnsureCallbackPending(); + aggregator_.InvalidateRect(clipped_rect); +} + +void PaintManager::ScrollRect(const pp::Rect& clip_rect, + const pp::Point& amount) { + DCHECK(!in_paint_); + + // You must call SetSize before using. + DCHECK(!graphics_.is_null() || has_pending_resize_); + + EnsureCallbackPending(); + + aggregator_.ScrollRect(clip_rect, amount); +} + +pp::Size PaintManager::GetEffectiveSize() const { + return has_pending_resize_ ? pending_size_ : plugin_size_; +} + +float PaintManager::GetEffectiveDeviceScale() const { + return has_pending_resize_ ? pending_device_scale_ : device_scale_; +} + +void PaintManager::EnsureCallbackPending() { + // The best way for us to do the next update is to get a notification that + // a previous one has completed. So if we're already waiting for one, we + // don't have to do anything differently now. + if (flush_pending_) + return; + + // If no flush is pending, we need to do a manual call to get back to the + // main thread. We may have one already pending, or we may need to schedule. + if (manual_callback_pending_) + return; + + pp::Module::Get()->core()->CallOnMainThread( + 0, + callback_factory_.NewCallback(&PaintManager::OnManualCallbackComplete), + 0); + manual_callback_pending_ = true; +} + +void PaintManager::DoPaint() { + in_paint_ = true; + + std::vector<ReadyRect> ready; + std::vector<pp::Rect> pending; + + DCHECK(aggregator_.HasPendingUpdate()); + + // Apply any pending resize. Setting the graphics to this class must happen + // before asking the plugin to paint in case it requests invalides or resizes. + // However, the bind must not happen until afterward since we don't want to + // have an unpainted device bound. The needs_binding flag tells us whether to + // do this later. + if (has_pending_resize_) { + plugin_size_ = pending_size_; + // Only create a new graphics context if the current context isn't big + // enough or if it is far too big. This avoids creating a new context if + // we only resize by a small amount. + pp::Size new_size = GetNewContextSize(graphics_.size(), pending_size_); + if (graphics_.size() != new_size) { + graphics_ = pp::Graphics2D(instance_, new_size, is_always_opaque_); + graphics_need_to_be_bound_ = true; + + // Since we're binding a new one, all of the callbacks have been canceled. + manual_callback_pending_ = false; + flush_pending_ = false; + callback_factory_.CancelAll(); + } + + if (pending_device_scale_ != 1.0) + graphics_.SetScale(1.0 / pending_device_scale_); + device_scale_ = pending_device_scale_; + + // This must be cleared before calling into the plugin since it may do + // additional invalidation or sizing operations. + has_pending_resize_ = false; + pending_size_ = pp::Size(); + } + + PaintAggregator::PaintUpdate update = aggregator_.GetPendingUpdate(); + client_->OnPaint(update.paint_rects, &ready, &pending); + + if (ready.empty() && pending.empty()) { + in_paint_ = false; + return; // Nothing was painted, don't schedule a flush. + } + + std::vector<PaintAggregator::ReadyRect> ready_now; + if (pending.empty()) { + std::vector<PaintAggregator::ReadyRect> temp_ready; + for (size_t i = 0; i < ready.size(); ++i) + temp_ready.push_back(ready[i]); + aggregator_.SetIntermediateResults(temp_ready, pending); + ready_now = aggregator_.GetReadyRects(); + aggregator_.ClearPendingUpdate(); + + // Apply any scroll first. + if (update.has_scroll) + graphics_.Scroll(update.scroll_rect, update.scroll_delta); + + view_size_changed_waiting_for_paint_ = false; + } else { + std::vector<PaintAggregator::ReadyRect> ready_later; + for (size_t i = 0; i < ready.size(); ++i) { + // Don't flush any part (i.e. scrollbars) if we're resizing the browser, + // as that'll lead to flashes. Until we flush, the browser will use the + // previous image, but if we flush, it'll revert to using the blank image. + // We make an exception for the first paint since we want to show the + // default background color instead of the pepper default of black. + if (ready[i].flush_now && + (!view_size_changed_waiting_for_paint_ || first_paint_)) { + ready_now.push_back(ready[i]); + } else { + ready_later.push_back(ready[i]); + } + } + // Take the rectangles, except the ones that need to be flushed right away, + // and save them so that everything is flushed at once. + aggregator_.SetIntermediateResults(ready_later, pending); + + if (ready_now.empty()) { + in_paint_ = false; + EnsureCallbackPending(); + return; + } + } + + for (size_t i = 0; i < ready_now.size(); ++i) { + graphics_.PaintImageData( + ready_now[i].image_data, ready_now[i].offset, ready_now[i].rect); + } + + int32_t result = graphics_.Flush( + callback_factory_.NewCallback(&PaintManager::OnFlushComplete)); + + // If you trigger this assertion, then your plugin has called Flush() + // manually. When using the PaintManager, you should not call Flush, it will + // handle that for you because it needs to know when it can do the next paint + // by implementing the flush callback. + // + // Another possible cause of this assertion is re-using devices. If you + // use one device, swap it with another, then swap it back, we won't know + // that we've already scheduled a Flush on the first device. It's best to not + // re-use devices in this way. + DCHECK(result != PP_ERROR_INPROGRESS); + + if (result == PP_OK_COMPLETIONPENDING) { + flush_pending_ = true; + } else { + DCHECK(result == PP_OK); // Catch all other errors in debug mode. + } + + in_paint_ = false; + first_paint_ = false; + + if (graphics_need_to_be_bound_) { + instance_->BindGraphics(graphics_); + graphics_need_to_be_bound_ = false; + } +} + +void PaintManager::OnFlushComplete(int32_t) { + DCHECK(flush_pending_); + flush_pending_ = false; + + // If more paints were enqueued while we were waiting for the flush to + // complete, execute them now. + if (aggregator_.HasPendingUpdate()) + DoPaint(); +} + +void PaintManager::OnManualCallbackComplete(int32_t) { + DCHECK(manual_callback_pending_); + manual_callback_pending_ = false; + + // Just because we have a manual callback doesn't mean there are actually any + // invalid regions. Even though we only schedule this callback when something + // is pending, a Flush callback could have come in before this callback was + // executed and that could have cleared the queue. + if (aggregator_.HasPendingUpdate()) + DoPaint(); +} diff --git a/pdf/paint_manager.h b/pdf/paint_manager.h new file mode 100644 index 0000000..7755eb6 --- /dev/null +++ b/pdf/paint_manager.h @@ -0,0 +1,205 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PAINT_MANAGER_H_ +#define PDF_PAINT_MANAGER_H_ + +#include <vector> + +#include "pdf/paint_aggregator.h" +#include "ppapi/cpp/graphics_2d.h" +#include "ppapi/utility/completion_callback_factory.h" + +namespace pp { +class Graphics2D; +class Instance; +class Point; +class Rect; +}; + +// Custom PaintManager for the PDF plugin. This is branched from the Pepper +// version. The difference is that this supports progressive rendering of dirty +// rects, where multiple calls to the rendering engine are needed. It also +// supports having higher-priority rects flushing right away, i.e. the +// scrollbars. +// +// The client's OnPaint +class PaintManager { + public: + // Like PaintAggregator's version, but allows the plugin to tell us whether + // it should be flushed to the screen immediately or when the rest of the + // plugin viewport is ready. + struct ReadyRect { + pp::Point offset; + pp::Rect rect; + pp::ImageData image_data; + bool flush_now; + + ReadyRect(const pp::Rect& r, const pp::ImageData& i, bool f) + : rect(r), image_data(i), flush_now(f) {} + + operator PaintAggregator::ReadyRect() const { + PaintAggregator::ReadyRect rv; + rv.offset = offset; + rv.rect = rect; + rv.image_data = image_data; + return rv; + } + }; + class Client { + public: + // Paints the given invalid area of the plugin to the given graphics + // device. Returns true if anything was painted. + // + // You are given the list of rects to paint in |paint_rects|. You can + // combine painting into less rectangles if it's more efficient. When a + // rect is painted, information about that paint should be inserted into + // |ready|. Otherwise if a paint needs more work, add the rect to + // |pending|. If |pending| is not empty, your OnPaint function will get + // called again. Once OnPaint is called and it returns no pending rects, + // all the previously ready rects will be flushed on screen. The exception + // is for ready rects that have |flush_now| set to true. These will be + // flushed right away. + // + // Do not call Flush() on the graphics device, this will be done + // automatically if you return true from this function since the + // PaintManager needs to handle the callback. + // + // Calling Invalidate/Scroll is not allowed while inside an OnPaint + virtual void OnPaint(const std::vector<pp::Rect>& paint_rects, + std::vector<ReadyRect>* ready, + std::vector<pp::Rect>* pending) = 0; + protected: + // You shouldn't be doing deleting through this interface. + virtual ~Client() {} + }; + + // The instance is the plugin instance using this paint manager to do its + // painting. Painting will automatically go to this instance and you don't + // have to manually bind any device context (this is all handled by the + // paint manager). + // + // The Client is a non-owning pointer and must remain valid (normally the + // object implementing the Client interface will own the paint manager). + // + // The is_always_opaque flag will be passed to the device contexts that this + // class creates. Set this to true if your plugin always draws an opaque + // image to the device. This is used as a hint to the browser that it does + // not need to do alpha blending, which speeds up painting. If you generate + // non-opqaue pixels or aren't sure, set this to false for more general + // blending. + // + // If you set is_always_opaque, your alpha channel should always be set to + // 0xFF or there may be painting artifacts. Being opaque will allow the + // browser to do a memcpy rather than a blend to paint the plugin, and this + // means your alpha values will get set on the page backing store. If these + // values are incorrect, it could mess up future blending. If you aren't + // sure, it is always correct to specify that it it not opaque. + // + // You will need to call SetSize before this class will do anything. Normally + // you do this from the ViewChanged method of your plugin instance. + PaintManager(pp::Instance* instance, Client* client, bool is_always_opaque); + + ~PaintManager(); + + // Returns the size of the graphics context to allocate for a given plugin + // size. We may allocated a slightly larger buffer than required so that we + // don't have to resize the context when scrollbars appear/dissapear due to + // zooming (which can result in flickering). + static pp::Size GetNewContextSize(const pp::Size& current_context_size, + const pp::Size& plugin_size); + + // You must call this function before using if you use the 0-arg constructor. + // See the constructor for what these arguments mean. + void Initialize(pp::Instance* instance, Client* client, + bool is_always_opaque); + + // Sets the size of the plugin. If the size is the same as the previous call, + // this will be a NOP. If the size has changed, a new device will be + // allocated to the given size and a paint to that device will be scheduled. + // + // This is intended to be called from ViewChanged with the size of the + // plugin. Since it tracks the old size and only allocates when the size + // changes, you can always call this function without worrying about whether + // the size changed or ViewChanged is called for another reason (like the + // position changed). + void SetSize(const pp::Size& new_size, float new_device_scale); + + // Invalidate the entire plugin. + void Invalidate(); + + // Invalidate the given rect. + void InvalidateRect(const pp::Rect& rect); + + // The given rect should be scrolled by the given amounts. + void ScrollRect(const pp::Rect& clip_rect, const pp::Point& amount); + + // Returns the size of the graphics context for the next paint operation. + // This is the pending size if a resize is pending (the plugin has called + // SetSize but we haven't actually painted it yet), or the current size of + // no resize is pending. + pp::Size GetEffectiveSize() const; + float GetEffectiveDeviceScale() const; + + private: + // Disallow copy and assign (these are unimplemented). + PaintManager(const PaintManager&); + PaintManager& operator=(const PaintManager&); + + // Makes sure there is a callback that will trigger a paint at a later time. + // This will be either a Flush callback telling us we're allowed to generate + // more data, or, if there's no flush callback pending, a manual call back + // to the message loop via ExecuteOnMainThread. + void EnsureCallbackPending(); + + // Does the client paint and executes a Flush if necessary. + void DoPaint(); + + // Callback for asynchronous completion of Flush. + void OnFlushComplete(int32_t); + + // Callback for manual scheduling of paints when there is no flush callback + // pending. + void OnManualCallbackComplete(int32_t); + + pp::Instance* instance_; + + // Non-owning pointer. See the constructor. + Client* client_; + + bool is_always_opaque_; + + pp::CompletionCallbackFactory<PaintManager> callback_factory_; + + // This graphics device will be is_null() if no graphics has been manually + // set yet. + pp::Graphics2D graphics_; + + PaintAggregator aggregator_; + + // See comment for EnsureCallbackPending for more on how these work. + bool manual_callback_pending_; + bool flush_pending_; + + // When we get a resize, we don't bind right away (see SetSize). The + // has_pending_resize_ tells us that we need to do a resize for the next + // paint operation. When true, the new size is in pending_size_. + bool has_pending_resize_; + bool graphics_need_to_be_bound_; + pp::Size pending_size_; + pp::Size plugin_size_; + float pending_device_scale_; + float device_scale_; + + // True iff we're in the middle of a paint. + bool in_paint_; + + // True if we haven't painted the plugin viewport yet. + bool first_paint_; + + // True when the view size just changed and we're waiting for a paint. + bool view_size_changed_waiting_for_paint_; +}; + +#endif // PDF_PAINT_MANAGER_H_ diff --git a/pdf/pdf.cc b/pdf/pdf.cc new file mode 100644 index 0000000..a4997a5 --- /dev/null +++ b/pdf/pdf.cc @@ -0,0 +1,244 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/pdf.h" + +#if defined(OS_WIN) +#include <windows.h> +#endif + +#include "base/command_line.h" +#include "base/logging.h" +#include "pdf/instance.h" +#include "pdf/out_of_process_instance.h" +#include "ppapi/c/ppp.h" +#include "ppapi/cpp/private/pdf.h" + +bool g_sdk_initialized_via_pepper = false; + +// The Mac release builds discard CreateModule and the entire PDFModule +// definition because they are not referenced here. This causes the Pepper +// exports (PPP_GetInterface etc) to not be exported. So we force the linker +// to include this code by using __attribute__((used)). +#if __GNUC__ >= 4 +#define PDF_USED __attribute__((used)) +#else +#define PDF_USED +#endif + +#if defined(OS_WIN) +HMODULE g_hmodule; + +void HandleInvalidParameter(const wchar_t* expression, + const wchar_t* function, + const wchar_t* file, + unsigned int line, + uintptr_t reserved) { + // Do the same as Chrome's CHECK(false) which is undefined. + ::base::debug::BreakDebugger(); + return; +} + +void HandlePureVirtualCall() { + // Do the same as Chrome's CHECK(false) which is undefined. + ::base::debug::BreakDebugger(); + return; +} + + +BOOL APIENTRY DllMain(HMODULE module, DWORD reason_for_call, LPVOID reserved) { + g_hmodule = module; + if (reason_for_call == DLL_PROCESS_ATTACH) { + // On windows following handlers work only inside module. So breakpad in + // chrome.dll does not catch that. To avoid linking related code or + // duplication breakpad_win.cc::InitCrashReporter() just catch errors here + // and crash in a way interceptable by breakpad of parent module. + _set_invalid_parameter_handler(HandleInvalidParameter); + _set_purecall_handler(HandlePureVirtualCall); + } + return TRUE; +} + +#endif + +namespace pp { + +PDF_USED Module* CreateModule() { + return new chrome_pdf::PDFModule(); +} + +} // namespace pp + +namespace chrome_pdf { + +PDFModule::PDFModule() { +} + +PDFModule::~PDFModule() { + if (g_sdk_initialized_via_pepper) { + chrome_pdf::ShutdownSDK(); + g_sdk_initialized_via_pepper = false; + } +} + +bool PDFModule::Init() { + return true; +} + +pp::Instance* PDFModule::CreateInstance(PP_Instance instance) { + if (!g_sdk_initialized_via_pepper) { + void* data = NULL; +#if defined(OS_WIN) + data = g_hmodule; +#endif + if (!chrome_pdf::InitializeSDK(data)) + return NULL; + g_sdk_initialized_via_pepper = true; + } + + if (pp::PDF::IsOutOfProcess(pp::InstanceHandle(instance))) + return new OutOfProcessInstance(instance); + return new Instance(instance); +} + +} // namespace chrome_pdf + +extern "C" { + +// TODO(sanjeevr): It might make sense to provide more stateful wrappers over +// the internal PDF SDK (such as LoadDocument, LoadPage etc). Determine if we +// need to provide this. +// Wrapper exports over the PDF engine that can be used by an external module +// such as Chrome (since Chrome cannot directly pull in PDFium sources). +#if defined(OS_WIN) +// |pdf_buffer| is the buffer that contains the entire PDF document to be +// rendered. +// |buffer_size| is the size of pdf_buffer in bytes. +// |page_number| is the 0-based index of the page to be rendered. +// |dc| is the device context to render into. +// |dpi_x| and |dpi_y| are the x and y resolutions respectively. If either value +// is -1, the dpi from the DC will be used. +// |bounds_origin_x|, |bounds_origin_y|, |bounds_width| and |bounds_height| +// specify a bounds rectangle within the DC in which to render the PDF page. +// |fit_to_bounds| specifies whether the output should be shrunk to fit the +// supplied bounds if the page size is larger than the bounds in any +// dimension. If this is false, parts of the PDF page that lie outside the +// bounds will be clipped. +// |stretch_to_bounds| specifies whether the output should be stretched to fit +// the supplied bounds if the page size is smaller than the bounds in any +// dimension. +// If both |fit_to_bounds| and |stretch_to_bounds| are true, then +// |fit_to_bounds| is honored first. +// |keep_aspect_ratio| If any scaling is to be done is true, this flag specifies +// whether the original aspect ratio of the page should be preserved while +// scaling. +// |center_in_bounds| specifies whether the final image (after any scaling is +// done) should be centered within the given bounds. +// |autorotate| specifies whether the final image should be rotated to match +// the output bound. +// Returns false if the document or the page number are not valid. +PP_EXPORT bool RenderPDFPageToDC(const void* pdf_buffer, + int buffer_size, + int page_number, + HDC dc, + int dpi_x, + int dpi_y, + int bounds_origin_x, + int bounds_origin_y, + int bounds_width, + int bounds_height, + bool fit_to_bounds, + bool stretch_to_bounds, + bool keep_aspect_ratio, + bool center_in_bounds, + bool autorotate) { + if (!g_sdk_initialized_via_pepper) { + if (!chrome_pdf::InitializeSDK(g_hmodule)) { + return false; + } + } + scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports( + chrome_pdf::PDFEngineExports::Create()); + chrome_pdf::PDFEngineExports::RenderingSettings settings( + dpi_x, dpi_y, pp::Rect(bounds_origin_x, bounds_origin_y, bounds_width, + bounds_height), + fit_to_bounds, stretch_to_bounds, keep_aspect_ratio, center_in_bounds, + autorotate); + bool ret = engine_exports->RenderPDFPageToDC(pdf_buffer, buffer_size, + page_number, settings, dc); + if (!g_sdk_initialized_via_pepper) { + chrome_pdf::ShutdownSDK(); + } + return ret; +} + +#endif // OS_WIN + +// |page_count| and |max_page_width| are optional and can be NULL. +// Returns false if the document is not valid. +PDF_USED PP_EXPORT +bool GetPDFDocInfo(const void* pdf_buffer, + int buffer_size, int* page_count, + double* max_page_width) { + if (!g_sdk_initialized_via_pepper) { + void* data = NULL; +#if defined(OS_WIN) + data = g_hmodule; +#endif + if (!chrome_pdf::InitializeSDK(data)) + return false; + } + scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports( + chrome_pdf::PDFEngineExports::Create()); + bool ret = engine_exports->GetPDFDocInfo( + pdf_buffer, buffer_size, page_count, max_page_width); + if (!g_sdk_initialized_via_pepper) { + chrome_pdf::ShutdownSDK(); + } + return ret; +} + +// Renders PDF page into 4-byte per pixel BGRA color bitmap. +// |pdf_buffer| is the buffer that contains the entire PDF document to be +// rendered. +// |pdf_buffer_size| is the size of pdf_buffer in bytes. +// |page_number| is the 0-based index of the page to be rendered. +// |bitmap_buffer| is the output buffer for bitmap. +// |bitmap_width| is the width of the output bitmap. +// |bitmap_height| is the height of the output bitmap. +// |dpi| is the resolutions. +// |autorotate| specifies whether the final image should be rotated to match +// the output bound. +// Returns false if the document or the page number are not valid. +PDF_USED PP_EXPORT +bool RenderPDFPageToBitmap(const void* pdf_buffer, + int pdf_buffer_size, + int page_number, + void* bitmap_buffer, + int bitmap_width, + int bitmap_height, + int dpi, + bool autorotate) { + if (!g_sdk_initialized_via_pepper) { + void* data = NULL; +#if defined(OS_WIN) + data = g_hmodule; +#endif + if (!chrome_pdf::InitializeSDK(data)) + return false; + } + scoped_ptr<chrome_pdf::PDFEngineExports> engine_exports( + chrome_pdf::PDFEngineExports::Create()); + chrome_pdf::PDFEngineExports::RenderingSettings settings( + dpi, dpi, pp::Rect(bitmap_width, bitmap_height), true, false, true, true, + autorotate); + bool ret = engine_exports->RenderPDFPageToBitmap( + pdf_buffer, pdf_buffer_size, page_number, settings, bitmap_buffer); + if (!g_sdk_initialized_via_pepper) { + chrome_pdf::ShutdownSDK(); + } + return ret; +} + +} // extern "C" diff --git a/pdf/pdf.def b/pdf/pdf.def new file mode 100644 index 0000000..b36918b --- /dev/null +++ b/pdf/pdf.def @@ -0,0 +1,7 @@ +LIBRARY pdf + +EXPORTS + NP_GetEntryPoints @1 + NP_Initialize @2 + NP_Shutdown @3 + diff --git a/pdf/pdf.gyp b/pdf/pdf.gyp new file mode 100644 index 0000000..ad29e18 --- /dev/null +++ b/pdf/pdf.gyp @@ -0,0 +1,181 @@ +{ + 'variables': { + 'chromium_code': 1, + 'pdf_engine%': 0, # 0 PDFium + }, + 'target_defaults': { + 'cflags': [ + '-fPIC', + ], + }, + 'targets': [ + { + 'target_name': 'pdf', + 'type': 'loadable_module', + 'msvs_guid': '647863C0-C7A3-469A-B1ED-AD7283C34BED', + 'dependencies': [ + '../base/base.gyp:base', + '../net/net.gyp:net', + '../ppapi/ppapi.gyp:ppapi_cpp', + '../third_party/pdfium/pdfium.gyp:fpdfsdk', + ], + 'xcode_settings': { + 'INFOPLIST_FILE': 'Info.plist', + }, + 'mac_framework_dirs': [ + '$(SDKROOT)/System/Library/Frameworks/ApplicationServices.framework/Frameworks', + ], + 'ldflags': [ '-L<(PRODUCT_DIR)',], + 'sources': [ + 'button.h', + 'button.cc', + 'chunk_stream.h', + 'chunk_stream.cc', + 'control.h', + 'control.cc', + 'document_loader.h', + 'document_loader.cc', + 'draw_utils.cc', + 'draw_utils.h', + 'fading_control.cc', + 'fading_control.h', + 'fading_controls.cc', + 'fading_controls.h', + 'instance.cc', + 'instance.h', + 'number_image_generator.cc', + 'number_image_generator.h', + 'out_of_process_instance.cc', + 'out_of_process_instance.h', + 'page_indicator.cc', + 'page_indicator.h', + 'paint_aggregator.cc', + 'paint_aggregator.h', + 'paint_manager.cc', + 'paint_manager.h', + 'pdf.cc', + 'pdf.h', + 'pdf.rc', + 'progress_control.cc', + 'progress_control.h', + 'pdf_engine.h', + 'preview_mode_client.cc', + 'preview_mode_client.h', + 'resource.h', + 'resource_consts.h', + 'thumbnail_control.cc', + 'thumbnail_control.h', + '../chrome/browser/chrome_page_zoom_constants.cc', + '../content/common/page_zoom.cc', + ], + 'conditions': [ + ['pdf_engine==0', { + 'sources': [ + 'pdfium/pdfium_assert_matching_enums.cc', + 'pdfium/pdfium_engine.cc', + 'pdfium/pdfium_engine.h', + 'pdfium/pdfium_mem_buffer_file_read.cc', + 'pdfium/pdfium_mem_buffer_file_read.h', + 'pdfium/pdfium_mem_buffer_file_write.cc', + 'pdfium/pdfium_mem_buffer_file_write.h', + 'pdfium/pdfium_page.cc', + 'pdfium/pdfium_page.h', + 'pdfium/pdfium_range.cc', + 'pdfium/pdfium_range.h', + ], + }], + ['OS!="win"', { + 'sources!': [ + 'pdf.rc', + ], + }], + ['OS=="mac"', { + 'mac_bundle': 1, + 'product_name': 'PDF', + 'product_extension': 'plugin', + # Strip the shipping binary of symbols so "Foxit" doesn't appear in + # the binary. Symbols are stored in a separate .dSYM. + 'variables': { + 'mac_real_dsym': 1, + }, + 'sources+': [ + 'Info.plist' + ], + }], + ['OS=="win"', { + 'defines': [ + 'COMPILE_CONTENT_STATICALLY', + ], + # TODO(jschuh): crbug.com/167187 fix size_t to int truncations. + 'msvs_disabled_warnings': [ 4267, ], + }], + ['OS=="linux"', { + 'configurations': { + 'Release_Base': { + #'cflags': [ '-fno-weak',], # get rid of symbols that strip doesn't remove. + # Don't do this for now since official builder will take care of it. That + # way symbols can still be uploaded to the crash server. + #'ldflags': [ '-s',], # strip local symbols from binary. + }, + }, + # Use a custom version script to prevent leaking the vendor name in + # visible symbols. + 'ldflags': [ + '-Wl,--version-script=<!(cd <(DEPTH) && pwd -P)/pdf/libpdf.map' + ], + }], + ], + }, + { + 'target_name': 'pdfium_test', + 'type': 'executable', + 'dependencies': [ + '../base/base.gyp:base', + '../base/base.gyp:base_i18n', + '../third_party/pdfium/pdfium.gyp:fpdfsdk', + ], + 'sources': [ + 'pdfium/pdfium_test.cc', + ], + } + ], + 'conditions': [ + # CrOS has a separate step to do this. + ['OS=="linux" and chromeos==0', + { 'targets': [ + { + 'target_name': 'pdf_linux_symbols', + 'type': 'none', + 'conditions': [ + ['linux_dump_symbols==1', { + 'actions': [ + { + 'action_name': 'dump_symbols', + 'inputs': [ + '<(DEPTH)/build/linux/dump_app_syms', + '<(PRODUCT_DIR)/dump_syms', + '<(PRODUCT_DIR)/libpdf.so', + ], + 'outputs': [ + '<(PRODUCT_DIR)/libpdf.so.breakpad.<(target_arch)', + ], + 'action': ['<(DEPTH)/build/linux/dump_app_syms', + '<(PRODUCT_DIR)/dump_syms', + '<(linux_strip_binary)', + '<(PRODUCT_DIR)/libpdf.so', + '<@(_outputs)'], + 'message': 'Dumping breakpad symbols to <(_outputs)', + 'process_outputs_as_sources': 1, + }, + ], + 'dependencies': [ + 'pdf', + '../breakpad/breakpad.gyp:dump_syms', + ], + }], + ], + }, + ], + },], # OS=="linux" and chromeos==0 + ], +} diff --git a/pdf/pdf.h b/pdf/pdf.h new file mode 100644 index 0000000..d797bbb --- /dev/null +++ b/pdf/pdf.h @@ -0,0 +1,24 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PDF_H_ +#define PDF_PDF_H_ + +#include "ppapi/cpp/module.h" + +namespace chrome_pdf { + +class PDFModule : public pp::Module { + public: + PDFModule(); + virtual ~PDFModule(); + + // pp::Module implementation. + virtual bool Init(); + virtual pp::Instance* CreateInstance(PP_Instance instance); +}; + +} // namespace chrome_pdf + +#endif // PDF_PDF_H_ diff --git a/pdf/pdf.rc b/pdf/pdf.rc new file mode 100644 index 0000000..50cb295 --- /dev/null +++ b/pdf/pdf.rc @@ -0,0 +1,104 @@ +// Microsoft Visual C++ generated resource script. +// +#include "resource.h" + +#define APSTUDIO_READONLY_SYMBOLS +///////////////////////////////////////////////////////////////////////////// +// +// Generated from the TEXTINCLUDE 2 resource. +// +#include "afxres.h" + +///////////////////////////////////////////////////////////////////////////// +#undef APSTUDIO_READONLY_SYMBOLS + +///////////////////////////////////////////////////////////////////////////// +// English (U.S.) resources + +#if !defined(AFX_RESOURCE_DLL) || defined(AFX_TARG_ENU) +#ifdef _WIN32 +LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US +#pragma code_page(1252) +#endif //_WIN32 + +#ifdef APSTUDIO_INVOKED +///////////////////////////////////////////////////////////////////////////// +// +// TEXTINCLUDE +// + +1 TEXTINCLUDE +BEGIN + "resource.h\0" +END + +2 TEXTINCLUDE +BEGIN + "#include ""afxres.h""\r\n" + "\0" +END + +3 TEXTINCLUDE +BEGIN + "\r\n" + "\0" +END + +#endif // APSTUDIO_INVOKED + + +///////////////////////////////////////////////////////////////////////////// +// +// Version +// + +VS_VERSION_INFO VERSIONINFO + FILEVERSION 1,0,0,1 + PRODUCTVERSION 1,0,0,1 + FILEFLAGSMASK 0x17L +#ifdef _DEBUG + FILEFLAGS 0x1L +#else + FILEFLAGS 0x0L +#endif + FILEOS 0x4L + FILETYPE 0x2L + FILESUBTYPE 0x0L +BEGIN + BLOCK "StringFileInfo" + BEGIN + BLOCK "040904e4" + BEGIN + VALUE "FileDescription", "Chrome PDF Viewer" + VALUE "FileVersion", "1, 0, 0, 1" + VALUE "InternalName", "pdf" + VALUE "LegalCopyright", "Copyright (C) 2010" + VALUE "MIMEType", "application/pdf" + VALUE "FileExtents", "pdf" + VALUE "FileOpenName", "Acrobat Portable Document Format" + VALUE "OriginalFilename", "pdf.dll" + VALUE "ProductName", "Chrome PDF Viewer" + VALUE "ProductVersion", "1, 0, 0, 1" + END + END + BLOCK "VarFileInfo" + BEGIN + VALUE "Translation", 0x409, 1252 + END +END + +#endif // English (U.S.) resources +///////////////////////////////////////////////////////////////////////////// + + + +#ifndef APSTUDIO_INVOKED +///////////////////////////////////////////////////////////////////////////// +// +// Generated from the TEXTINCLUDE 3 resource. +// + + +///////////////////////////////////////////////////////////////////////////// +#endif // not APSTUDIO_INVOKED + diff --git a/pdf/pdf_engine.h b/pdf/pdf_engine.h new file mode 100644 index 0000000..ee1cb1f --- /dev/null +++ b/pdf/pdf_engine.h @@ -0,0 +1,319 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PDF_ENGINE_H_ +#define PDF_PDF_ENGINE_H_ + +#include "build/build_config.h" + +#if defined(OS_WIN) +#include <windows.h> +#endif + +#include <string> +#include <vector> + +#include "base/strings/string16.h" + +#include "ppapi/c/dev/pp_cursor_type_dev.h" +#include "ppapi/c/dev/ppp_printing_dev.h" +#include "ppapi/c/ppb_input_event.h" +#include "ppapi/cpp/completion_callback.h" +#include "ppapi/cpp/image_data.h" +#include "ppapi/cpp/rect.h" +#include "ppapi/cpp/size.h" +#include "ppapi/cpp/url_loader.h" + +namespace pp { +class InputEvent; +} + +#define kBackgroundColorR 204 +#define kBackgroundColorG 204 +#define kBackgroundColorB 204 +#define kBackgroundColorA 255 + +namespace chrome_pdf { + +class Stream; + +#if defined(OS_MACOSX) +const uint32 kDefaultKeyModifier = PP_INPUTEVENT_MODIFIER_METAKEY; +#else // !OS_MACOSX +const uint32 kDefaultKeyModifier = PP_INPUTEVENT_MODIFIER_CONTROLKEY; +#endif // OS_MACOSX + +// Do one time initialization of the SDK. data is platform specific, on Windows +// it's the instance of the DLL and it's unused on other platforms. +bool InitializeSDK(void* data); +// Tells the SDK that we're shutting down. +void ShutdownSDK(); + +// This class encapsulates a PDF rendering engine. +class PDFEngine { + public: + + enum DocumentPermission { + PERMISSION_COPY, + PERMISSION_COPY_ACCESSIBLE, + PERMISSION_PRINT_LOW_QUALITY, + PERMISSION_PRINT_HIGH_QUALITY, + }; + + // The interface that's provided to the rendering engine. + class Client { + public: + // Informs the client about the document's size in pixels. + virtual void DocumentSizeUpdated(const pp::Size& size) = 0; + + // Informs the client that the given rect needs to be repainted. + virtual void Invalidate(const pp::Rect& rect) = 0; + + // Informs the client to scroll the plugin area by the given offset. + virtual void Scroll(const pp::Point& point) = 0; + + // Scroll the horizontal/vertical scrollbars to a given position. + virtual void ScrollToX(int position) = 0; + virtual void ScrollToY(int position) = 0; + + // Scroll to the specified page. + virtual void ScrollToPage(int page) = 0; + + // Navigate to the given url. + virtual void NavigateTo(const std::string& url, bool open_in_new_tab) = 0; + + // Updates the cursor. + virtual void UpdateCursor(PP_CursorType_Dev cursor) = 0; + + // Updates the tick marks in the vertical scrollbar. + virtual void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks) = 0; + + // Updates the number of find results for the current search term. If + // there are no matches 0 should be passed in. Only when the plugin has + // finished searching should it pass in the final count with final_result + // set to true. + virtual void NotifyNumberOfFindResultsChanged(int total, + bool final_result) = 0; + + // Updates the index of the currently selected search item. + virtual void NotifySelectedFindResultChanged(int current_find_index) = 0; + + // Prompts the user for a password to open this document. The callback is + // called when the password is retrieved. + virtual void GetDocumentPassword( + pp::CompletionCallbackWithOutput<pp::Var> callback) = 0; + + // Puts up an alert with the given message. + virtual void Alert(const std::string& message) = 0; + + // Puts up a confirm with the given message, and returns true if the user + // presses OK, or false if they press cancel. + virtual bool Confirm(const std::string& message) = 0; + + // Puts up a prompt with the given message and default answer and returns + // the answer. + virtual std::string Prompt(const std::string& question, + const std::string& default_answer) = 0; + + // Returns the url of the pdf. + virtual std::string GetURL() = 0; + + // Send an email. + virtual void Email(const std::string& to, + const std::string& cc, + const std::string& bcc, + const std::string& subject, + const std::string& body) = 0; + + // Put up the print dialog. + virtual void Print() = 0; + + // Submit the data using HTTP POST. + virtual void SubmitForm(const std::string& url, + const void* data, + int length) = 0; + + // Pops up a file selection dialog and returns the result. + virtual std::string ShowFileSelectionDialog() = 0; + + // Creates and returns new URL loader for partial document requests. + virtual pp::URLLoader CreateURLLoader() = 0; + + // Calls the client's OnCallback() function in delay_in_ms with the given + // id. + virtual void ScheduleCallback(int id, int delay_in_ms) = 0; + + // Searches the given string for "term" and returns the results. Unicode- + // aware. + struct SearchStringResult { + int start_index; + int length; + }; + virtual void SearchString(const base::char16* string, + const base::char16* term, + bool case_sensitive, + std::vector<SearchStringResult>* results) = 0; + + // Notifies the client that the engine has painted a page from the document. + virtual void DocumentPaintOccurred() = 0; + + // Notifies the client that the document has finished loading. + virtual void DocumentLoadComplete(int page_count) = 0; + + // Notifies the client that the document has failed to load. + virtual void DocumentLoadFailed() = 0; + + virtual pp::Instance* GetPluginInstance() = 0; + + // Notifies that an unsupported feature in the PDF was encountered. + virtual void DocumentHasUnsupportedFeature(const std::string& feature) = 0; + + // Notifies the client about document load progress. + virtual void DocumentLoadProgress(uint32 available, uint32 doc_size) = 0; + + // Notifies the client about focus changes for form text fields. + virtual void FormTextFieldFocusChange(bool in_focus) = 0; + + // Returns true if the plugin has been opened within print preview. + virtual bool IsPrintPreview() = 0; + }; + + // Factory method to create an instance of the PDF Engine. + static PDFEngine* Create(Client* client); + + virtual ~PDFEngine() {} + // Most of these functions are similar to the Pepper functions of the same + // name, so not repeating the description here unless it's different. + virtual bool New(const char* url) = 0; + virtual bool New(const char* url, + const char* headers) = 0; + virtual void PageOffsetUpdated(const pp::Point& page_offset) = 0; + virtual void PluginSizeUpdated(const pp::Size& size) = 0; + virtual void ScrolledToXPosition(int position) = 0; + virtual void ScrolledToYPosition(int position) = 0; + // Paint is called a series of times. Before these n calls are made, PrePaint + // is called once. After Paint is called n times, PostPaint is called once. + virtual void PrePaint() = 0; + virtual void Paint(const pp::Rect& rect, + pp::ImageData* image_data, + std::vector<pp::Rect>* ready, + std::vector<pp::Rect>* pending) = 0; + virtual void PostPaint() = 0; + virtual bool HandleDocumentLoad(const pp::URLLoader& loader) = 0; + virtual bool HandleEvent(const pp::InputEvent& event) = 0; + virtual uint32_t QuerySupportedPrintOutputFormats() = 0; + virtual void PrintBegin() = 0; + virtual pp::Resource PrintPages( + const PP_PrintPageNumberRange_Dev* page_ranges, + uint32_t page_range_count, + const PP_PrintSettings_Dev& print_settings) = 0; + virtual void PrintEnd() = 0; + virtual void StartFind(const char* text, bool case_sensitive) = 0; + virtual bool SelectFindResult(bool forward) = 0; + virtual void StopFind() = 0; + virtual void ZoomUpdated(double new_zoom_level) = 0; + virtual void RotateClockwise() = 0; + virtual void RotateCounterclockwise() = 0; + virtual std::string GetSelectedText() = 0; + virtual std::string GetLinkAtPosition(const pp::Point& point) = 0; + virtual bool IsSelecting() = 0; + // Checks the permissions associated with this document. + virtual bool HasPermission(DocumentPermission permission) const = 0; + virtual void SelectAll() = 0; + // Gets the number of pages in the document. + virtual int GetNumberOfPages() = 0; + // Gets the 0-based page number of |destination|, or -1 if it does not exist. + virtual int GetNamedDestinationPage(const std::string& destination) = 0; + // Gets the index of the first visible page, or -1 if none are visible. + virtual int GetFirstVisiblePage() = 0; + // Gets the index of the most visible page, or -1 if none are visible. + virtual int GetMostVisiblePage() = 0; + // Gets the rectangle of the page including shadow. + virtual pp::Rect GetPageRect(int index) = 0; + // Gets the rectangle of the page excluding any additional areas. + virtual pp::Rect GetPageContentsRect(int index) = 0; + // Gets the offset of the vertical scrollbar from the top in document + // coordinates. + virtual int GetVerticalScrollbarYPosition() = 0; + // Paints page thumbnail to the ImageData. + virtual void PaintThumbnail(pp::ImageData* image_data, int index) = 0; + // Set color / grayscale rendering modes. + virtual void SetGrayscale(bool grayscale) = 0; + // Callback for timer that's set with ScheduleCallback(). + virtual void OnCallback(int id) = 0; + // Gets the JSON representation of the PDF file + virtual std::string GetPageAsJSON(int index) = 0; + // Gets the PDF document's print scaling preference. True if the document can + // be scaled to fit. + virtual bool GetPrintScaling() = 0; + + // Append blank pages to make a 1-page document to a |num_pages| document. + // Always retain the first page data. + virtual void AppendBlankPages(int num_pages) = 0; + // Append the first page of the document loaded with the |engine| to this + // document at page |index|. + virtual void AppendPage(PDFEngine* engine, int index) = 0; + + // Allow client to query and reset scroll positions in document coordinates. + // Note that this is meant for cases where the device scale factor changes, + // and not for general scrolling - the engine will not repaint due to this. + virtual pp::Point GetScrollPosition() = 0; + virtual void SetScrollPosition(const pp::Point& position) = 0; + + virtual bool IsProgressiveLoad() = 0; +}; + +// Interface for exports that wrap the PDF engine. +class PDFEngineExports { + public: + struct RenderingSettings { + RenderingSettings(int dpi_x, + int dpi_y, + const pp::Rect& bounds, + bool fit_to_bounds, + bool stretch_to_bounds, + bool keep_aspect_ratio, + bool center_in_bounds, + bool autorotate) + : dpi_x(dpi_x), dpi_y(dpi_y), bounds(bounds), + fit_to_bounds(fit_to_bounds), stretch_to_bounds(stretch_to_bounds), + keep_aspect_ratio(keep_aspect_ratio), + center_in_bounds(center_in_bounds), autorotate(autorotate) { + } + int dpi_x; + int dpi_y; + pp::Rect bounds; + bool fit_to_bounds; + bool stretch_to_bounds; + bool keep_aspect_ratio; + bool center_in_bounds; + bool autorotate; + }; + + PDFEngineExports() {} + virtual ~PDFEngineExports() {} + static PDFEngineExports* Create(); +#if defined(OS_WIN) + // See the definition of RenderPDFPageToDC in pdf.cc for details. + virtual bool RenderPDFPageToDC(const void* pdf_buffer, + int buffer_size, + int page_number, + const RenderingSettings& settings, + HDC dc) = 0; +#endif // OS_WIN + // See the definition of RenderPDFPageToBitmap in pdf.cc for details. + virtual bool RenderPDFPageToBitmap(const void* pdf_buffer, + int pdf_buffer_size, + int page_number, + const RenderingSettings& settings, + void* bitmap_buffer) = 0; + virtual bool GetPDFDocInfo(const void* pdf_buffer, + int buffer_size, + int* page_count, + double* max_page_width) = 0; +}; + +} // namespace chrome_pdf + +#endif // PDF_PDF_ENGINE_H_ diff --git a/pdf/pdfium/pdfium_assert_matching_enums.cc b/pdf/pdfium/pdfium_assert_matching_enums.cc new file mode 100644 index 0000000..ef140cf --- /dev/null +++ b/pdf/pdfium/pdfium_assert_matching_enums.cc @@ -0,0 +1,207 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "base/basictypes.h" +#include "ppapi/c/pp_input_event.h" +#include "ppapi/c/private/ppb_pdf.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_fwlevent.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_sysfontinfo.h" +#include "ui/events/keycodes/keyboard_codes.h" + +#define COMPILE_ASSERT_MATCH(np_name, pdfium_name) \ + COMPILE_ASSERT(int(np_name) == int(pdfium_name), mismatching_enums) + +COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_SHIFTKEY, FWL_EVENTFLAG_ShiftKey); +COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_CONTROLKEY, + FWL_EVENTFLAG_ControlKey); +COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_ALTKEY, FWL_EVENTFLAG_AltKey); +COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_METAKEY, FWL_EVENTFLAG_MetaKey); +COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_ISKEYPAD, FWL_EVENTFLAG_KeyPad); +COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_ISAUTOREPEAT, + FWL_EVENTFLAG_AutoRepeat); +COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_LEFTBUTTONDOWN, + FWL_EVENTFLAG_LeftButtonDown); +COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_MIDDLEBUTTONDOWN, + FWL_EVENTFLAG_MiddleButtonDown); +COMPILE_ASSERT_MATCH(PP_INPUTEVENT_MODIFIER_RIGHTBUTTONDOWN, + FWL_EVENTFLAG_RightButtonDown); + +COMPILE_ASSERT_MATCH(ui::VKEY_BACK, FWL_VKEY_Back); +COMPILE_ASSERT_MATCH(ui::VKEY_TAB, FWL_VKEY_Tab); +COMPILE_ASSERT_MATCH(ui::VKEY_CLEAR, FWL_VKEY_Clear); +COMPILE_ASSERT_MATCH(ui::VKEY_RETURN, FWL_VKEY_Return); +COMPILE_ASSERT_MATCH(ui::VKEY_SHIFT, FWL_VKEY_Shift); +COMPILE_ASSERT_MATCH(ui::VKEY_CONTROL, FWL_VKEY_Control); +COMPILE_ASSERT_MATCH(ui::VKEY_MENU, FWL_VKEY_Menu); +COMPILE_ASSERT_MATCH(ui::VKEY_PAUSE, FWL_VKEY_Pause); +COMPILE_ASSERT_MATCH(ui::VKEY_CAPITAL, FWL_VKEY_Capital); +COMPILE_ASSERT_MATCH(ui::VKEY_KANA, FWL_VKEY_Kana); +COMPILE_ASSERT_MATCH(ui::VKEY_HANGUL, FWL_VKEY_Hangul); +COMPILE_ASSERT_MATCH(ui::VKEY_JUNJA, FWL_VKEY_Junja); +COMPILE_ASSERT_MATCH(ui::VKEY_FINAL, FWL_VKEY_Final); +COMPILE_ASSERT_MATCH(ui::VKEY_HANJA, FWL_VKEY_Hanja); +COMPILE_ASSERT_MATCH(ui::VKEY_KANJI, FWL_VKEY_Kanji); +COMPILE_ASSERT_MATCH(ui::VKEY_ESCAPE, FWL_VKEY_Escape); +COMPILE_ASSERT_MATCH(ui::VKEY_CONVERT, FWL_VKEY_Convert); +COMPILE_ASSERT_MATCH(ui::VKEY_NONCONVERT, FWL_VKEY_NonConvert); +COMPILE_ASSERT_MATCH(ui::VKEY_ACCEPT, FWL_VKEY_Accept); +COMPILE_ASSERT_MATCH(ui::VKEY_MODECHANGE, FWL_VKEY_ModeChange); +COMPILE_ASSERT_MATCH(ui::VKEY_SPACE, FWL_VKEY_Space); +COMPILE_ASSERT_MATCH(ui::VKEY_PRIOR, FWL_VKEY_Prior); +COMPILE_ASSERT_MATCH(ui::VKEY_NEXT, FWL_VKEY_Next); +COMPILE_ASSERT_MATCH(ui::VKEY_END, FWL_VKEY_End); +COMPILE_ASSERT_MATCH(ui::VKEY_HOME, FWL_VKEY_Home); +COMPILE_ASSERT_MATCH(ui::VKEY_LEFT, FWL_VKEY_Left); +COMPILE_ASSERT_MATCH(ui::VKEY_UP, FWL_VKEY_Up); +COMPILE_ASSERT_MATCH(ui::VKEY_RIGHT, FWL_VKEY_Right); +COMPILE_ASSERT_MATCH(ui::VKEY_DOWN, FWL_VKEY_Down); +COMPILE_ASSERT_MATCH(ui::VKEY_SELECT, FWL_VKEY_Select); +COMPILE_ASSERT_MATCH(ui::VKEY_PRINT, FWL_VKEY_Print); +COMPILE_ASSERT_MATCH(ui::VKEY_EXECUTE, FWL_VKEY_Execute); +COMPILE_ASSERT_MATCH(ui::VKEY_SNAPSHOT, FWL_VKEY_Snapshot); +COMPILE_ASSERT_MATCH(ui::VKEY_INSERT, FWL_VKEY_Insert); +COMPILE_ASSERT_MATCH(ui::VKEY_DELETE, FWL_VKEY_Delete); +COMPILE_ASSERT_MATCH(ui::VKEY_HELP, FWL_VKEY_Help); +COMPILE_ASSERT_MATCH(ui::VKEY_0, FWL_VKEY_0); +COMPILE_ASSERT_MATCH(ui::VKEY_1, FWL_VKEY_1); +COMPILE_ASSERT_MATCH(ui::VKEY_2, FWL_VKEY_2); +COMPILE_ASSERT_MATCH(ui::VKEY_3, FWL_VKEY_3); +COMPILE_ASSERT_MATCH(ui::VKEY_4, FWL_VKEY_4); +COMPILE_ASSERT_MATCH(ui::VKEY_5, FWL_VKEY_5); +COMPILE_ASSERT_MATCH(ui::VKEY_6, FWL_VKEY_6); +COMPILE_ASSERT_MATCH(ui::VKEY_7, FWL_VKEY_7); +COMPILE_ASSERT_MATCH(ui::VKEY_8, FWL_VKEY_8); +COMPILE_ASSERT_MATCH(ui::VKEY_9, FWL_VKEY_9); +COMPILE_ASSERT_MATCH(ui::VKEY_A, FWL_VKEY_A); +COMPILE_ASSERT_MATCH(ui::VKEY_B, FWL_VKEY_B); +COMPILE_ASSERT_MATCH(ui::VKEY_C, FWL_VKEY_C); +COMPILE_ASSERT_MATCH(ui::VKEY_D, FWL_VKEY_D); +COMPILE_ASSERT_MATCH(ui::VKEY_E, FWL_VKEY_E); +COMPILE_ASSERT_MATCH(ui::VKEY_F, FWL_VKEY_F); +COMPILE_ASSERT_MATCH(ui::VKEY_G, FWL_VKEY_G); +COMPILE_ASSERT_MATCH(ui::VKEY_H, FWL_VKEY_H); +COMPILE_ASSERT_MATCH(ui::VKEY_I, FWL_VKEY_I); +COMPILE_ASSERT_MATCH(ui::VKEY_J, FWL_VKEY_J); +COMPILE_ASSERT_MATCH(ui::VKEY_K, FWL_VKEY_K); +COMPILE_ASSERT_MATCH(ui::VKEY_L, FWL_VKEY_L); +COMPILE_ASSERT_MATCH(ui::VKEY_M, FWL_VKEY_M); +COMPILE_ASSERT_MATCH(ui::VKEY_N, FWL_VKEY_N); +COMPILE_ASSERT_MATCH(ui::VKEY_O, FWL_VKEY_O); +COMPILE_ASSERT_MATCH(ui::VKEY_P, FWL_VKEY_P); +COMPILE_ASSERT_MATCH(ui::VKEY_Q, FWL_VKEY_Q); +COMPILE_ASSERT_MATCH(ui::VKEY_R, FWL_VKEY_R); +COMPILE_ASSERT_MATCH(ui::VKEY_S, FWL_VKEY_S); +COMPILE_ASSERT_MATCH(ui::VKEY_T, FWL_VKEY_T); +COMPILE_ASSERT_MATCH(ui::VKEY_U, FWL_VKEY_U); +COMPILE_ASSERT_MATCH(ui::VKEY_V, FWL_VKEY_V); +COMPILE_ASSERT_MATCH(ui::VKEY_W, FWL_VKEY_W); +COMPILE_ASSERT_MATCH(ui::VKEY_X, FWL_VKEY_X); +COMPILE_ASSERT_MATCH(ui::VKEY_Y, FWL_VKEY_Y); +COMPILE_ASSERT_MATCH(ui::VKEY_Z, FWL_VKEY_Z); +COMPILE_ASSERT_MATCH(ui::VKEY_LWIN, FWL_VKEY_LWin); +COMPILE_ASSERT_MATCH(ui::VKEY_COMMAND, FWL_VKEY_Command); +COMPILE_ASSERT_MATCH(ui::VKEY_RWIN, FWL_VKEY_RWin); +COMPILE_ASSERT_MATCH(ui::VKEY_APPS, FWL_VKEY_Apps); +COMPILE_ASSERT_MATCH(ui::VKEY_SLEEP, FWL_VKEY_Sleep); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD0, FWL_VKEY_NumPad0); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD1, FWL_VKEY_NumPad1); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD2, FWL_VKEY_NumPad2); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD3, FWL_VKEY_NumPad3); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD4, FWL_VKEY_NumPad4); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD5, FWL_VKEY_NumPad5); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD6, FWL_VKEY_NumPad6); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD7, FWL_VKEY_NumPad7); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD8, FWL_VKEY_NumPad8); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMPAD9, FWL_VKEY_NumPad9); +COMPILE_ASSERT_MATCH(ui::VKEY_MULTIPLY, FWL_VKEY_Multiply); +COMPILE_ASSERT_MATCH(ui::VKEY_ADD, FWL_VKEY_Add); +COMPILE_ASSERT_MATCH(ui::VKEY_SEPARATOR, FWL_VKEY_Separator); +COMPILE_ASSERT_MATCH(ui::VKEY_SUBTRACT, FWL_VKEY_Subtract); +COMPILE_ASSERT_MATCH(ui::VKEY_DECIMAL, FWL_VKEY_Decimal); +COMPILE_ASSERT_MATCH(ui::VKEY_DIVIDE, FWL_VKEY_Divide); +COMPILE_ASSERT_MATCH(ui::VKEY_F1, FWL_VKEY_F1); +COMPILE_ASSERT_MATCH(ui::VKEY_F2, FWL_VKEY_F2); +COMPILE_ASSERT_MATCH(ui::VKEY_F3, FWL_VKEY_F3); +COMPILE_ASSERT_MATCH(ui::VKEY_F4, FWL_VKEY_F4); +COMPILE_ASSERT_MATCH(ui::VKEY_F5, FWL_VKEY_F5); +COMPILE_ASSERT_MATCH(ui::VKEY_F6, FWL_VKEY_F6); +COMPILE_ASSERT_MATCH(ui::VKEY_F7, FWL_VKEY_F7); +COMPILE_ASSERT_MATCH(ui::VKEY_F8, FWL_VKEY_F8); +COMPILE_ASSERT_MATCH(ui::VKEY_F9, FWL_VKEY_F9); +COMPILE_ASSERT_MATCH(ui::VKEY_F10, FWL_VKEY_F10); +COMPILE_ASSERT_MATCH(ui::VKEY_F11, FWL_VKEY_F11); +COMPILE_ASSERT_MATCH(ui::VKEY_F12, FWL_VKEY_F12); +COMPILE_ASSERT_MATCH(ui::VKEY_F13, FWL_VKEY_F13); +COMPILE_ASSERT_MATCH(ui::VKEY_F14, FWL_VKEY_F14); +COMPILE_ASSERT_MATCH(ui::VKEY_F15, FWL_VKEY_F15); +COMPILE_ASSERT_MATCH(ui::VKEY_F16, FWL_VKEY_F16); +COMPILE_ASSERT_MATCH(ui::VKEY_F17, FWL_VKEY_F17); +COMPILE_ASSERT_MATCH(ui::VKEY_F18, FWL_VKEY_F18); +COMPILE_ASSERT_MATCH(ui::VKEY_F19, FWL_VKEY_F19); +COMPILE_ASSERT_MATCH(ui::VKEY_F20, FWL_VKEY_F20); +COMPILE_ASSERT_MATCH(ui::VKEY_F21, FWL_VKEY_F21); +COMPILE_ASSERT_MATCH(ui::VKEY_F22, FWL_VKEY_F22); +COMPILE_ASSERT_MATCH(ui::VKEY_F23, FWL_VKEY_F23); +COMPILE_ASSERT_MATCH(ui::VKEY_F24, FWL_VKEY_F24); +COMPILE_ASSERT_MATCH(ui::VKEY_NUMLOCK, FWL_VKEY_NunLock); +COMPILE_ASSERT_MATCH(ui::VKEY_SCROLL, FWL_VKEY_Scroll); +COMPILE_ASSERT_MATCH(ui::VKEY_LSHIFT, FWL_VKEY_LShift); +COMPILE_ASSERT_MATCH(ui::VKEY_RSHIFT, FWL_VKEY_RShift); +COMPILE_ASSERT_MATCH(ui::VKEY_LCONTROL, FWL_VKEY_LControl); +COMPILE_ASSERT_MATCH(ui::VKEY_RCONTROL, FWL_VKEY_RControl); +COMPILE_ASSERT_MATCH(ui::VKEY_LMENU, FWL_VKEY_LMenu); +COMPILE_ASSERT_MATCH(ui::VKEY_RMENU, FWL_VKEY_RMenu); +COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_BACK, FWL_VKEY_BROWSER_Back); +COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_FORWARD, FWL_VKEY_BROWSER_Forward); +COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_REFRESH, FWL_VKEY_BROWSER_Refresh); +COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_STOP, FWL_VKEY_BROWSER_Stop); +COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_SEARCH, FWL_VKEY_BROWSER_Search); +COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_FAVORITES, FWL_VKEY_BROWSER_Favorites); +COMPILE_ASSERT_MATCH(ui::VKEY_BROWSER_HOME, FWL_VKEY_BROWSER_Home); +COMPILE_ASSERT_MATCH(ui::VKEY_VOLUME_MUTE, FWL_VKEY_VOLUME_Mute); +COMPILE_ASSERT_MATCH(ui::VKEY_VOLUME_DOWN, FWL_VKEY_VOLUME_Down); +COMPILE_ASSERT_MATCH(ui::VKEY_VOLUME_UP, FWL_VKEY_VOLUME_Up); +COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_NEXT_TRACK, FWL_VKEY_MEDIA_NEXT_Track); +COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_PREV_TRACK, FWL_VKEY_MEDIA_PREV_Track); +COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_STOP, FWL_VKEY_MEDIA_Stop); +COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_PLAY_PAUSE, FWL_VKEY_MEDIA_PLAY_Pause); +COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_LAUNCH_MAIL, FWL_VKEY_MEDIA_LAUNCH_Mail); +COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_LAUNCH_MEDIA_SELECT, + FWL_VKEY_MEDIA_LAUNCH_MEDIA_Select); +COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_LAUNCH_APP1, FWL_VKEY_MEDIA_LAUNCH_APP1); +COMPILE_ASSERT_MATCH(ui::VKEY_MEDIA_LAUNCH_APP2, FWL_VKEY_MEDIA_LAUNCH_APP2); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_1, FWL_VKEY_OEM_1); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_PLUS, FWL_VKEY_OEM_Plus); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_COMMA, FWL_VKEY_OEM_Comma); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_MINUS, FWL_VKEY_OEM_Minus); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_PERIOD, FWL_VKEY_OEM_Period); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_2, FWL_VKEY_OEM_2); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_3, FWL_VKEY_OEM_3); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_4, FWL_VKEY_OEM_4); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_5, FWL_VKEY_OEM_5); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_6, FWL_VKEY_OEM_6); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_7, FWL_VKEY_OEM_7); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_8, FWL_VKEY_OEM_8); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_102, FWL_VKEY_OEM_102); +COMPILE_ASSERT_MATCH(ui::VKEY_PROCESSKEY, FWL_VKEY_ProcessKey); +COMPILE_ASSERT_MATCH(ui::VKEY_PACKET, FWL_VKEY_Packet); +COMPILE_ASSERT_MATCH(ui::VKEY_ATTN, FWL_VKEY_Attn); +COMPILE_ASSERT_MATCH(ui::VKEY_CRSEL, FWL_VKEY_Crsel); +COMPILE_ASSERT_MATCH(ui::VKEY_EXSEL, FWL_VKEY_Exsel); +COMPILE_ASSERT_MATCH(ui::VKEY_EREOF, FWL_VKEY_Ereof); +COMPILE_ASSERT_MATCH(ui::VKEY_PLAY, FWL_VKEY_Play); +COMPILE_ASSERT_MATCH(ui::VKEY_ZOOM, FWL_VKEY_Zoom); +COMPILE_ASSERT_MATCH(ui::VKEY_NONAME, FWL_VKEY_NoName); +COMPILE_ASSERT_MATCH(ui::VKEY_PA1, FWL_VKEY_PA1); +COMPILE_ASSERT_MATCH(ui::VKEY_OEM_CLEAR, FWL_VKEY_OEM_Clear); +COMPILE_ASSERT_MATCH(ui::VKEY_UNKNOWN, FWL_VKEY_Unknown); + +COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_ANSI, FXFONT_ANSI_CHARSET); +COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_DEFAULT, FXFONT_DEFAULT_CHARSET); +COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_SYMBOL, FXFONT_SYMBOL_CHARSET); +COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_SHIFTJIS, FXFONT_SHIFTJIS_CHARSET); +COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_HANGUL, FXFONT_HANGEUL_CHARSET); +COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_GB2312, FXFONT_GB2312_CHARSET); +COMPILE_ASSERT_MATCH(PP_PRIVATEFONTCHARSET_CHINESEBIG5, + FXFONT_CHINESEBIG5_CHARSET); diff --git a/pdf/pdfium/pdfium_engine.cc b/pdf/pdfium/pdfium_engine.cc new file mode 100644 index 0000000..eb165ae --- /dev/null +++ b/pdf/pdfium/pdfium_engine.cc @@ -0,0 +1,3389 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/pdfium/pdfium_engine.h" + +#include <math.h> + +#include "base/json/json_writer.h" +#include "base/logging.h" +#include "base/memory/scoped_ptr.h" +#include "base/stl_util.h" +#include "base/strings/string_number_conversions.h" +#include "base/strings/string_piece.h" +#include "base/strings/string_util.h" +#include "base/strings/utf_string_conversions.h" +#include "base/values.h" +#include "pdf/draw_utils.h" +#include "pdf/pdfium/pdfium_mem_buffer_file_read.h" +#include "pdf/pdfium/pdfium_mem_buffer_file_write.h" +#include "ppapi/c/pp_errors.h" +#include "ppapi/c/pp_input_event.h" +#include "ppapi/c/ppb_core.h" +#include "ppapi/c/private/ppb_pdf.h" +#include "ppapi/cpp/dev/memory_dev.h" +#include "ppapi/cpp/input_event.h" +#include "ppapi/cpp/instance.h" +#include "ppapi/cpp/module.h" +#include "ppapi/cpp/private/pdf.h" +#include "ppapi/cpp/trusted/browser_font_trusted.h" +#include "ppapi/cpp/url_response_info.h" +#include "ppapi/cpp/var.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_ext.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_flatten.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_searchex.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_sysfontinfo.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_transformpage.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfedit.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfoom.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfppo.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfsave.h" +#include "third_party/pdfium/fpdfsdk/include/pdfwindow/PDFWindow.h" +#include "third_party/pdfium/fpdfsdk/include/pdfwindow/PWL_FontMap.h" +#include "ui/events/keycodes/keyboard_codes.h" + +namespace chrome_pdf { + +#define kPageShadowTop 3 +#define kPageShadowBottom 7 +#define kPageShadowLeft 5 +#define kPageShadowRight 5 + +#define kPageSeparatorThickness 4 +#define kHighlightColorR 153 +#define kHighlightColorG 193 +#define kHighlightColorB 218 + +#define kPendingPageColorR 238 +#define kPendingPageColorG 238 +#define kPendingPageColorB 238 +#define kPendingPageColorA 255 + +#define kFormHighlightColor 0xFFE4DD +#define kFormHighlightAlpha 100 + +#define kMaxPasswordTries 3 + +// See Table 3.20 in +// http://www.adobe.com/devnet/acrobat/pdfs/pdf_reference_1-7.pdf +#define kPDFPermissionPrintLowQualityMask 1 << 2 +#define kPDFPermissionPrintHighQualityMask 1 << 11 +#define kPDFPermissionCopyMask 1 << 4 +#define kPDFPermissionCopyAccessibleMask 1 << 9 + +#define kLoadingTextVerticalOffset 50 + +// The maximum amount of time we'll spend doing a paint before we give back +// control of the thread. +#define kMaxProgressivePaintTimeMs 50 + +// The maximum amount of time we'll spend doing the first paint. This is less +// than the above to keep things smooth if the user is scrolling quickly. We +// try painting a little because with accelerated compositing, we get flushes +// only every 16 ms. If we were to wait until the next flush to paint the rest +// of the pdf, we would never get to draw the pdf and would only draw the +// scrollbars. This value is picked to give enough time for gpu related code to +// do its thing and still fit within the timelimit for 60Hz. For the +// non-composited case, this doesn't make things worse since we're still +// painting the scrollbars > 60 Hz. +#define kMaxInitialProgressivePaintTimeMs 10 + +// Copied from printing/units.cc because we don't want to depend on printing +// since it brings in libpng which causes duplicate symbols with PDFium. +const int kPointsPerInch = 72; +const int kPixelsPerInch = 96; + +struct ClipBox { + float left; + float right; + float top; + float bottom; +}; + +int ConvertUnit(int value, int old_unit, int new_unit) { + // With integer arithmetic, to divide a value with correct rounding, you need + // to add half of the divisor value to the dividend value. You need to do the + // reverse with negative number. + if (value >= 0) { + return ((value * new_unit) + (old_unit / 2)) / old_unit; + } else { + return ((value * new_unit) - (old_unit / 2)) / old_unit; + } +} + +std::vector<uint32_t> GetPageNumbersFromPrintPageNumberRange( + const PP_PrintPageNumberRange_Dev* page_ranges, + uint32_t page_range_count) { + std::vector<uint32_t> page_numbers; + for (uint32_t index = 0; index < page_range_count; ++index) { + for (uint32_t page_number = page_ranges[index].first_page_number; + page_number <= page_ranges[index].last_page_number; ++page_number) { + page_numbers.push_back(page_number); + } + } + return page_numbers; +} + +#if defined(OS_LINUX) + +PP_Instance g_last_instance_id; + +struct PDFFontSubstitution { + const char* pdf_name; + const char* face; + bool bold; + bool italic; +}; + +// This list is for CPWL_FontMap::GetDefaultFontByCharset(). +// We pretend to have these font natively and let the browser (or underlying +// fontconfig) to pick the proper font on the system. +void EnumFonts(struct _FPDF_SYSFONTINFO* sysfontinfo, void* mapper) { + FPDF_AddInstalledFont(mapper, "Arial", FXFONT_DEFAULT_CHARSET); + + int i = 0; + while (CPWL_FontMap::defaultTTFMap[i].charset != -1) { + FPDF_AddInstalledFont(mapper, + CPWL_FontMap::defaultTTFMap[i].fontname, + CPWL_FontMap::defaultTTFMap[i].charset); + ++i; + } +} + +const PDFFontSubstitution PDFFontSubstitutions[] = { + {"Courier", "Courier New", false, false}, + {"Courier-Bold", "Courier New", true, false}, + {"Courier-BoldOblique", "Courier New", true, true}, + {"Courier-Oblique", "Courier New", false, true}, + {"Helvetica", "Arial", false, false}, + {"Helvetica-Bold", "Arial", true, false}, + {"Helvetica-BoldOblique", "Arial", true, true}, + {"Helvetica-Oblique", "Arial", false, true}, + {"Times-Roman", "Times New Roman", false, false}, + {"Times-Bold", "Times New Roman", true, false}, + {"Times-BoldItalic", "Times New Roman", true, true}, + {"Times-Italic", "Times New Roman", false, true}, + + // MS P?(Mincho|Gothic) are the most notable fonts in Japanese PDF files + // without embedding the glyphs. Sometimes the font names are encoded + // in Japanese Windows's locale (CP932/Shift_JIS) without space. + // Most Linux systems don't have the exact font, but for outsourcing + // fontconfig to find substitutable font in the system, we pass ASCII + // font names to it. + {"MS-PGothic", "MS PGothic", false, false}, + {"MS-Gothic", "MS Gothic", false, false}, + {"MS-PMincho", "MS PMincho", false, false}, + {"MS-Mincho", "MS Mincho", false, false}, + // MS PGothic in Shift_JIS encoding. + {"\x82\x6C\x82\x72\x82\x6F\x83\x53\x83\x56\x83\x62\x83\x4E", + "MS PGothic", false, false}, + // MS Gothic in Shift_JIS encoding. + {"\x82\x6C\x82\x72\x83\x53\x83\x56\x83\x62\x83\x4E", + "MS Gothic", false, false}, + // MS PMincho in Shift_JIS encoding. + {"\x82\x6C\x82\x72\x82\x6F\x96\xBE\x92\xA9", + "MS PMincho", false, false}, + // MS Mincho in Shift_JIS encoding. + {"\x82\x6C\x82\x72\x96\xBE\x92\xA9", + "MS Mincho", false, false}, +}; + +void* MapFont(struct _FPDF_SYSFONTINFO*, int weight, int italic, + int charset, int pitch_family, const char* face, int* exact) { + pp::BrowserFontDescription description; + + // Pretend the system does not have the Symbol font to force a fallback to + // the built in Symbol font in CFX_FontMapper::FindSubstFont(). + if (strcmp(face, "Symbol") == 0) + return NULL; + + if (pitch_family & FXFONT_FF_FIXEDPITCH) { + description.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_MONOSPACE); + } else if (pitch_family & FXFONT_FF_ROMAN) { + description.set_family(PP_BROWSERFONT_TRUSTED_FAMILY_SERIF); + } + + // Map from the standard PDF fonts to TrueType font names. + size_t i; + for (i = 0; i < arraysize(PDFFontSubstitutions); ++i) { + if (strcmp(face, PDFFontSubstitutions[i].pdf_name) == 0) { + description.set_face(PDFFontSubstitutions[i].face); + if (PDFFontSubstitutions[i].bold) + description.set_weight(PP_BROWSERFONT_TRUSTED_WEIGHT_BOLD); + if (PDFFontSubstitutions[i].italic) + description.set_italic(true); + break; + } + } + + if (i == arraysize(PDFFontSubstitutions)) { + // TODO(kochi): Pass the face in UTF-8. If face is not encoded in UTF-8, + // convert to UTF-8 before passing. + description.set_face(face); + } + + if (!pp::PDF::IsAvailable()) { + NOTREACHED(); + return NULL; + } + + PP_Resource font_resource = pp::PDF::GetFontFileWithFallback( + pp::InstanceHandle(g_last_instance_id), + &description.pp_font_description(), + static_cast<PP_PrivateFontCharset>(charset)); + long res_id = font_resource; + return reinterpret_cast<void*>(res_id); +} + +unsigned long GetFontData(struct _FPDF_SYSFONTINFO*, void* font_id, + unsigned int table, unsigned char* buffer, + unsigned long buf_size) { + if (!pp::PDF::IsAvailable()) { + NOTREACHED(); + return 0; + } + + uint32_t size = buf_size; + long res_id = reinterpret_cast<long>(font_id); + if (!pp::PDF::GetFontTableForPrivateFontFile(res_id, table, buffer, &size)) + return 0; + return size; +} + +void DeleteFont(struct _FPDF_SYSFONTINFO*, void* font_id) { + long res_id = reinterpret_cast<long>(font_id); + pp::Module::Get()->core()->ReleaseResource(res_id); +} + +FPDF_SYSFONTINFO g_font_info = { + 1, + 0, + EnumFonts, + MapFont, + 0, + GetFontData, + 0, + 0, + DeleteFont +}; +#endif // defined(OS_LINUX) + +void OOM_Handler(_OOM_INFO*) { + // Kill the process. This is important for security, since the code doesn't + // NULL-check many memory allocations. If a malloc fails, returns NULL, and + // the buffer is then used, it provides a handy mapping of memory starting at + // address 0 for an attacker to utilize. + abort(); + // Paranoia, just in case. + *(volatile char*)0 = '\0'; +} + +OOM_INFO g_oom_info = { + 1, + OOM_Handler +}; + +PDFiumEngine* g_engine_for_unsupported; + +void Unsupported_Handler(UNSUPPORT_INFO*, int type) { + if (!g_engine_for_unsupported) { + NOTREACHED(); + return; + } + + g_engine_for_unsupported->UnsupportedFeature(type); +} + +UNSUPPORT_INFO g_unsuppored_info = { + 1, + Unsupported_Handler +}; + +// Set the destination page size and content area in points based on source +// page rotation and orientation. +// +// |rotated| True if source page is rotated 90 degree or 270 degree. +// |is_src_page_landscape| is true if the source page orientation is landscape. +// |page_size| has the actual destination page size in points. +// |content_rect| has the actual destination page printable area values in +// points. +void SetPageSizeAndContentRect(bool rotated, + bool is_src_page_landscape, + pp::Size* page_size, + pp::Rect* content_rect) { + bool is_dst_page_landscape = page_size->width() > page_size->height(); + bool page_orientation_mismatched = is_src_page_landscape != + is_dst_page_landscape; + bool rotate_dst_page = rotated ^ page_orientation_mismatched; + if (rotate_dst_page) { + page_size->SetSize(page_size->height(), page_size->width()); + content_rect->SetRect(content_rect->y(), content_rect->x(), + content_rect->height(), content_rect->width()); + } +} + +// Calculate the scale factor between |content_rect| and a page of size +// |src_width| x |src_height|. +// +// |scale_to_fit| is true, if we need to calculate the scale factor. +// |content_rect| specifies the printable area of the destination page, with +// origin at left-bottom. Values are in points. +// |src_width| specifies the source page width in points. +// |src_height| specifies the source page height in points. +// |rotated| True if source page is rotated 90 degree or 270 degree. +double CalculateScaleFactor(bool scale_to_fit, + const pp::Rect& content_rect, + double src_width, double src_height, bool rotated) { + if (!scale_to_fit || src_width == 0 || src_height == 0) + return 1.0; + + double actual_source_page_width = rotated ? src_height : src_width; + double actual_source_page_height = rotated ? src_width : src_height; + double ratio_x = static_cast<double>(content_rect.width()) / + actual_source_page_width; + double ratio_y = static_cast<double>(content_rect.height()) / + actual_source_page_height; + return std::min(ratio_x, ratio_y); +} + +// Compute source clip box boundaries based on the crop box / media box of +// source page and scale factor. +// +// |page| Handle to the source page. Returned by FPDF_LoadPage function. +// |scale_factor| specifies the scale factor that should be applied to source +// clip box boundaries. +// |rotated| True if source page is rotated 90 degree or 270 degree. +// |clip_box| out param to hold the computed source clip box values. +void CalculateClipBoxBoundary(FPDF_PAGE page, double scale_factor, bool rotated, + ClipBox* clip_box) { + if (!FPDFPage_GetCropBox(page, &clip_box->left, &clip_box->bottom, + &clip_box->right, &clip_box->top)) { + if (!FPDFPage_GetMediaBox(page, &clip_box->left, &clip_box->bottom, + &clip_box->right, &clip_box->top)) { + // Make the default size to be letter size (8.5" X 11"). We are just + // following the PDFium way of handling these corner cases. PDFium always + // consider US-Letter as the default page size. + float paper_width = 612; + float paper_height = 792; + clip_box->left = 0; + clip_box->bottom = 0; + clip_box->right = rotated ? paper_height : paper_width; + clip_box->top = rotated ? paper_width : paper_height; + } + } + clip_box->left *= scale_factor; + clip_box->right *= scale_factor; + clip_box->bottom *= scale_factor; + clip_box->top *= scale_factor; +} + +// Calculate the clip box translation offset for a page that does need to be +// scaled. All parameters are in points. +// +// |content_rect| specifies the printable area of the destination page, with +// origin at left-bottom. +// |source_clip_box| specifies the source clip box positions, relative to +// origin at left-bottom. +// |offset_x| and |offset_y| will contain the final translation offsets for the +// source clip box, relative to origin at left-bottom. +void CalculateScaledClipBoxOffset(const pp::Rect& content_rect, + const ClipBox& source_clip_box, + double* offset_x, double* offset_y) { + const float clip_box_width = source_clip_box.right - source_clip_box.left; + const float clip_box_height = source_clip_box.top - source_clip_box.bottom; + + // Center the intended clip region to real clip region. + *offset_x = (content_rect.width() - clip_box_width) / 2 + content_rect.x() - + source_clip_box.left; + *offset_y = (content_rect.height() - clip_box_height) / 2 + content_rect.y() - + source_clip_box.bottom; +} + +// Calculate the clip box offset for a page that does not need to be scaled. +// All parameters are in points. +// +// |content_rect| specifies the printable area of the destination page, with +// origin at left-bottom. +// |rotation| specifies the source page rotation values which are N / 90 +// degrees. +// |page_width| specifies the screen destination page width. +// |page_height| specifies the screen destination page height. +// |source_clip_box| specifies the source clip box positions, relative to origin +// at left-bottom. +// |offset_x| and |offset_y| will contain the final translation offsets for the +// source clip box, relative to origin at left-bottom. +void CalculateNonScaledClipBoxOffset(const pp::Rect& content_rect, int rotation, + int page_width, int page_height, + const ClipBox& source_clip_box, + double* offset_x, double* offset_y) { + // Align the intended clip region to left-top corner of real clip region. + switch (rotation) { + case 0: + *offset_x = -1 * source_clip_box.left; + *offset_y = page_height - source_clip_box.top; + break; + case 1: + *offset_x = 0; + *offset_y = -1 * source_clip_box.bottom; + break; + case 2: + *offset_x = page_width - source_clip_box.right; + *offset_y = 0; + break; + case 3: + *offset_x = page_height - source_clip_box.right; + *offset_y = page_width - source_clip_box.top; + break; + default: + NOTREACHED(); + break; + } +} + +// Do an in-place transformation of objects on |page|. Translate all objects on +// |page| in |source_clip_box| by (|offset_x|, |offset_y|) and scale them by +// |scale_factor|. +// +// |page| Handle to the page. Returned by FPDF_LoadPage function. +// |source_clip_box| specifies the source clip box positions, relative to +// origin at left-bottom. +// |scale_factor| specifies the scale factor that should be applied to page +// objects. +// |offset_x| and |offset_y| specifies the translation offsets for the page +// objects, relative to origin at left-bottom. + +void TransformPageObjects(FPDF_PAGE page, const ClipBox& source_clip_box, + const double scale_factor, double offset_x, + double offset_y) { + const int obj_count = FPDFPage_CountObject(page); + + // Create a new clip path. + FPDF_CLIPPATH clip_path = FPDF_CreateClipPath( + source_clip_box.left + offset_x, source_clip_box.bottom + offset_y, + source_clip_box.right + offset_x, source_clip_box.top + offset_y); + + for (int obj_idx = 0; obj_idx < obj_count; ++obj_idx) { + FPDF_PAGEOBJECT page_obj = FPDFPage_GetObject(page, obj_idx); + FPDFPageObj_Transform(page_obj, scale_factor, 0, 0, scale_factor, + offset_x, offset_y); + FPDFPageObj_TransformClipPath(page_obj, scale_factor, 0, 0, scale_factor, + offset_x, offset_y); + } + FPDFPage_TransformAnnots(page, scale_factor, 0, 0, scale_factor, + offset_x, offset_y); + FPDFPage_GenerateContent(page); + + // Add a extra clip path to the new pdf page here. + FPDFPage_InsertClipPath(page, clip_path); + + // Destroy the clip path. + FPDF_DestroyClipPath(clip_path); +} + +bool InitializeSDK(void* data) { + FPDF_InitLibrary(data); + +#if defined(OS_LINUX) + // Font loading doesn't work in the renderer sandbox in Linux. + FPDF_SetSystemFontInfo(&g_font_info); +#endif + + FSDK_SetOOMHandler(&g_oom_info); + FSDK_SetUnSpObjProcessHandler(&g_unsuppored_info); + + return true; +} + +void ShutdownSDK() { + FPDF_DestroyLibrary(); +} + +PDFEngine* PDFEngine::Create(PDFEngine::Client* client) { + return new PDFiumEngine(client); +} + +PDFiumEngine::PDFiumEngine(PDFEngine::Client* client) + : client_(client), + current_zoom_(1.0), + current_rotation_(0), + doc_loader_(this), + password_tries_remaining_(0), + doc_(NULL), + form_(NULL), + defer_page_unload_(false), + selecting_(false), + next_page_to_search_(-1), + last_page_to_search_(-1), + last_character_index_to_search_(-1), + current_find_index_(-1), + permissions_(0), + fpdf_availability_(NULL), + next_timer_id_(0), + last_page_mouse_down_(-1), + first_visible_page_(-1), + most_visible_page_(-1), + called_do_document_action_(false), + render_grayscale_(false), + progressive_paint_timeout_(0), + getting_password_(false) { + find_factory_.Initialize(this); + password_factory_.Initialize(this); + + file_access_.m_FileLen = 0; + file_access_.m_GetBlock = &GetBlock; + file_access_.m_Param = &doc_loader_; + + file_availability_.version = 1; + file_availability_.IsDataAvail = &IsDataAvail; + file_availability_.loader = &doc_loader_; + + download_hints_.version = 1; + download_hints_.AddSegment = &AddSegment; + download_hints_.loader = &doc_loader_; + + // Initialize FPDF_FORMFILLINFO member variables. Deriving from this struct + // allows the static callbacks to be able to cast the FPDF_FORMFILLINFO in + // callbacks to ourself instead of maintaining a map of them to + // PDFiumEngine. + FPDF_FORMFILLINFO::version = 1; + FPDF_FORMFILLINFO::m_pJsPlatform = this; + FPDF_FORMFILLINFO::Release = NULL; + FPDF_FORMFILLINFO::FFI_Invalidate = Form_Invalidate; + FPDF_FORMFILLINFO::FFI_OutputSelectedRect = Form_OutputSelectedRect; + FPDF_FORMFILLINFO::FFI_SetCursor = Form_SetCursor; + FPDF_FORMFILLINFO::FFI_SetTimer = Form_SetTimer; + FPDF_FORMFILLINFO::FFI_KillTimer = Form_KillTimer; + FPDF_FORMFILLINFO::FFI_GetLocalTime = Form_GetLocalTime; + FPDF_FORMFILLINFO::FFI_OnChange = Form_OnChange; + FPDF_FORMFILLINFO::FFI_GetPage = Form_GetPage; + FPDF_FORMFILLINFO::FFI_GetCurrentPage = Form_GetCurrentPage; + FPDF_FORMFILLINFO::FFI_GetRotation = Form_GetRotation; + FPDF_FORMFILLINFO::FFI_ExecuteNamedAction = Form_ExecuteNamedAction; + FPDF_FORMFILLINFO::FFI_SetTextFieldFocus = Form_SetTextFieldFocus; + FPDF_FORMFILLINFO::FFI_DoURIAction = Form_DoURIAction; + FPDF_FORMFILLINFO::FFI_DoGoToAction = Form_DoGoToAction; + + IPDF_JSPLATFORM::version = 1; + IPDF_JSPLATFORM::app_alert = Form_Alert; + IPDF_JSPLATFORM::app_beep = Form_Beep; + IPDF_JSPLATFORM::app_response = Form_Response; + IPDF_JSPLATFORM::Doc_getFilePath = Form_GetFilePath; + IPDF_JSPLATFORM::Doc_mail = Form_Mail; + IPDF_JSPLATFORM::Doc_print = Form_Print; + IPDF_JSPLATFORM::Doc_submitForm = Form_SubmitForm; + IPDF_JSPLATFORM::Doc_gotoPage = Form_GotoPage; + IPDF_JSPLATFORM::Field_browse = Form_Browse; + + IFSDK_PAUSE::version = 1; + IFSDK_PAUSE::user = NULL; + IFSDK_PAUSE::NeedToPauseNow = Pause_NeedToPauseNow; +} + +PDFiumEngine::~PDFiumEngine() { + STLDeleteElements(&pages_); + if (doc_) { + if (form_) { + FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WC); + FPDFDOC_ExitFormFillEnviroument(form_); + } + FPDF_CloseDocument(doc_); + } + + if (fpdf_availability_) + FPDFAvail_Destroy(fpdf_availability_); +} + +int PDFiumEngine::GetBlock(void* param, unsigned long position, + unsigned char* buffer, unsigned long size) { + DocumentLoader* loader = static_cast<DocumentLoader*>(param); + return loader->GetBlock(position, size, buffer); +} + +bool PDFiumEngine::IsDataAvail(FX_FILEAVAIL* param, + size_t offset, size_t size) { + PDFiumEngine::FileAvail* file_avail = + static_cast<PDFiumEngine::FileAvail*>(param); + return file_avail->loader->IsDataAvailable(offset, size); +} + +void PDFiumEngine::AddSegment(FX_DOWNLOADHINTS* param, + size_t offset, size_t size) { + PDFiumEngine::DownloadHints* download_hints = + static_cast<PDFiumEngine::DownloadHints*>(param); + return download_hints->loader->RequestData(offset, size); +} + +bool PDFiumEngine::New(const char* url) { + url_ = url; + headers_ = std::string(); + return true; +} + +bool PDFiumEngine::New(const char* url, + const char* headers) { + url_ = url; + if (!headers) + headers_ = std::string(); + else + headers_ = headers; + return true; +} + +void PDFiumEngine::PageOffsetUpdated(const pp::Point& page_offset) { + page_offset_ = page_offset; +} + +void PDFiumEngine::PluginSizeUpdated(const pp::Size& size) { + CancelPaints(); + + plugin_size_ = size; + CalculateVisiblePages(); +} + +void PDFiumEngine::ScrolledToXPosition(int position) { + CancelPaints(); + + int old_x = position_.x(); + position_.set_x(position); + CalculateVisiblePages(); + client_->Scroll(pp::Point(old_x - position, 0)); +} + +void PDFiumEngine::ScrolledToYPosition(int position) { + CancelPaints(); + + int old_y = position_.y(); + position_.set_y(position); + CalculateVisiblePages(); + client_->Scroll(pp::Point(0, old_y - position)); +} + +void PDFiumEngine::PrePaint() { + for (size_t i = 0; i < progressive_paints_.size(); ++i) + progressive_paints_[i].painted_ = false; +} + +void PDFiumEngine::Paint(const pp::Rect& rect, + pp::ImageData* image_data, + std::vector<pp::Rect>* ready, + std::vector<pp::Rect>* pending) { + pp::Rect leftover = rect; + for (size_t i = 0; i < visible_pages_.size(); ++i) { + int index = visible_pages_[i]; + pp::Rect page_rect = pages_[index]->rect(); + // Convert the current page's rectangle to screen rectangle. We do this + // instead of the reverse (converting the dirty rectangle from screen to + // page coordinates) because then we'd have to convert back to screen + // coordinates, and the rounding errors sometime leave pixels dirty or even + // move the text up or down a pixel when zoomed. + pp::Rect page_rect_in_screen = GetPageScreenRect(index); + pp::Rect dirty_in_screen = page_rect_in_screen.Intersect(leftover); + if (dirty_in_screen.IsEmpty()) + continue; + + leftover = leftover.Subtract(dirty_in_screen); + + if (pages_[index]->available()) { + int progressive = GetProgressiveIndex(index); + if (progressive != -1 && + progressive_paints_[progressive].rect != dirty_in_screen) { + // The PDFium code can only handle one progressive paint at a time, so + // queue this up. Previously we used to merge the rects when this + // happened, but it made scrolling up on complex PDFs very slow since + // there would be a damaged rect at the top (from scroll) and at the + // bottom (from toolbar). + pending->push_back(dirty_in_screen); + continue; + } + + if (progressive == -1) { + progressive = StartPaint(index, dirty_in_screen); + progressive_paint_timeout_ = kMaxInitialProgressivePaintTimeMs; + } else { + progressive_paint_timeout_ = kMaxProgressivePaintTimeMs; + } + + progressive_paints_[progressive].painted_ = true; + if (ContinuePaint(progressive, image_data)) { + FinishPaint(progressive, image_data); + ready->push_back(dirty_in_screen); + } else { + pending->push_back(dirty_in_screen); + } + } else { + PaintUnavailablePage(index, dirty_in_screen, image_data); + ready->push_back(dirty_in_screen); + } + } +} + +void PDFiumEngine::PostPaint() { + for (size_t i = 0; i < progressive_paints_.size(); ++i) { + if (progressive_paints_[i].painted_) + continue; + + // This rectangle must have been merged with another one, that's why we + // weren't asked to paint it. Remove it or otherwise we'll never finish + // painting. + FPDF_RenderPage_Close( + pages_[progressive_paints_[i].page_index]->GetPage()); + FPDFBitmap_Destroy(progressive_paints_[i].bitmap); + progressive_paints_.erase(progressive_paints_.begin() + i); + --i; + } +} + +bool PDFiumEngine::HandleDocumentLoad(const pp::URLLoader& loader) { + password_tries_remaining_ = kMaxPasswordTries; + return doc_loader_.Init(loader, url_, headers_); +} + +pp::Instance* PDFiumEngine::GetPluginInstance() { + return client_->GetPluginInstance(); +} + +pp::URLLoader PDFiumEngine::CreateURLLoader() { + return client_->CreateURLLoader(); +} + +void PDFiumEngine::AppendPage(PDFEngine* engine, int index) { + // Unload and delete the blank page before appending. + pages_[index]->Unload(); + pages_[index]->set_calculated_links(false); + pp::Size curr_page_size = GetPageSize(index); + FPDFPage_Delete(doc_, index); + FPDF_ImportPages(doc_, + static_cast<PDFiumEngine*>(engine)->doc(), + "1", + index); + pp::Size new_page_size = GetPageSize(index); + if (curr_page_size != new_page_size) + LoadPageInfo(true); + client_->Invalidate(GetPageScreenRect(index)); +} + +pp::Point PDFiumEngine::GetScrollPosition() { + return position_; +} + +void PDFiumEngine::SetScrollPosition(const pp::Point& position) { + position_ = position; +} + +bool PDFiumEngine::IsProgressiveLoad() { + return doc_loader_.is_partial_document(); +} + +void PDFiumEngine::OnPartialDocumentLoaded() { + file_access_.m_FileLen = doc_loader_.document_size(); + fpdf_availability_ = FPDFAvail_Create(&file_availability_, &file_access_); + DCHECK(fpdf_availability_); + + // Currently engine does not deal efficiently with some non-linearized files. + // See http://code.google.com/p/chromium/issues/detail?id=59400 + // To improve user experience we download entire file for non-linearized PDF. + if (!FPDFAvail_IsLinearized(fpdf_availability_)) { + doc_loader_.RequestData(0, doc_loader_.document_size()); + return; + } + + LoadDocument(); +} + +void PDFiumEngine::OnPendingRequestComplete() { + if (!doc_ || !form_) { + LoadDocument(); + return; + } + + // LoadDocument() will result in |pending_pages_| being reset so there's no + // need to run the code below in that case. + bool update_pages = false; + std::vector<int> still_pending; + for (size_t i = 0; i < pending_pages_.size(); ++i) { + if (CheckPageAvailable(pending_pages_[i], &still_pending)) { + update_pages = true; + if (IsPageVisible(pending_pages_[i])) + client_->Invalidate(GetPageScreenRect(pending_pages_[i])); + } + } + pending_pages_.swap(still_pending); + if (update_pages) + LoadPageInfo(true); +} + +void PDFiumEngine::OnNewDataAvailable() { + client_->DocumentLoadProgress(doc_loader_.GetAvailableData(), + doc_loader_.document_size()); +} + +void PDFiumEngine::OnDocumentComplete() { + if (!doc_ || !form_) { + file_access_.m_FileLen = doc_loader_.document_size(); + LoadDocument(); + return; + } + + bool need_update = false; + for (size_t i = 0; i < pages_.size(); ++i) { + if (pages_[i]->available()) + continue; + + pages_[i]->set_available(true); + // We still need to call IsPageAvail() even if the whole document is + // already downloaded. + FPDFAvail_IsPageAvail(fpdf_availability_, i, &download_hints_); + need_update = true; + if (IsPageVisible(i)) + client_->Invalidate(GetPageScreenRect(i)); + } + if (need_update) + LoadPageInfo(true); + + FinishLoadingDocument(); +} + +void PDFiumEngine::FinishLoadingDocument() { + DCHECK(doc_loader_.IsDocumentComplete() && doc_); + if (called_do_document_action_) + return; + called_do_document_action_ = true; + + // These can only be called now, as the JS might end up needing a page. + FORM_DoDocumentJSAction(form_); + FORM_DoDocumentOpenAction(form_); + if (most_visible_page_ != -1) { + FPDF_PAGE new_page = pages_[most_visible_page_]->GetPage(); + FORM_DoPageAAction(new_page, form_, FPDFPAGE_AACTION_OPEN); + } + + if (doc_) // This can only happen if loading |doc_| fails. + client_->DocumentLoadComplete(pages_.size()); +} + +void PDFiumEngine::UnsupportedFeature(int type) { + std::string feature; + switch (type) { + case FPDF_UNSP_DOC_XFAFORM: + feature = "XFA"; + break; + case FPDF_UNSP_DOC_PORTABLECOLLECTION: + feature = "Portfolios_Packages"; + break; + case FPDF_UNSP_DOC_ATTACHMENT: + case FPDF_UNSP_ANNOT_ATTACHMENT: + feature = "Attachment"; + break; + case FPDF_UNSP_DOC_SECURITY: + feature = "Rights_Management"; + break; + case FPDF_UNSP_DOC_SHAREDREVIEW: + feature = "Shared_Review"; + break; + case FPDF_UNSP_DOC_SHAREDFORM_ACROBAT: + case FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM: + case FPDF_UNSP_DOC_SHAREDFORM_EMAIL: + feature = "Shared_Form"; + break; + case FPDF_UNSP_ANNOT_3DANNOT: + feature = "3D"; + break; + case FPDF_UNSP_ANNOT_MOVIE: + feature = "Movie"; + break; + case FPDF_UNSP_ANNOT_SOUND: + feature = "Sound"; + break; + case FPDF_UNSP_ANNOT_SCREEN_MEDIA: + case FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA: + feature = "Screen"; + break; + case FPDF_UNSP_ANNOT_SIG: + feature = "Digital_Signature"; + break; + } + client_->DocumentHasUnsupportedFeature(feature); +} + +void PDFiumEngine::ContinueFind(int32_t result) { + StartFind(current_find_text_.c_str(), !!result); +} + +bool PDFiumEngine::HandleEvent(const pp::InputEvent& event) { + DCHECK(!defer_page_unload_); + defer_page_unload_ = true; + bool rv = false; + switch (event.GetType()) { + case PP_INPUTEVENT_TYPE_MOUSEDOWN: + rv = OnMouseDown(pp::MouseInputEvent(event)); + break; + case PP_INPUTEVENT_TYPE_MOUSEUP: + rv = OnMouseUp(pp::MouseInputEvent(event)); + break; + case PP_INPUTEVENT_TYPE_MOUSEMOVE: + rv = OnMouseMove(pp::MouseInputEvent(event)); + break; + case PP_INPUTEVENT_TYPE_KEYDOWN: + rv = OnKeyDown(pp::KeyboardInputEvent(event)); + break; + case PP_INPUTEVENT_TYPE_KEYUP: + rv = OnKeyUp(pp::KeyboardInputEvent(event)); + break; + case PP_INPUTEVENT_TYPE_CHAR: + rv = OnChar(pp::KeyboardInputEvent(event)); + break; + default: + break; + } + + DCHECK(defer_page_unload_); + defer_page_unload_ = false; + for (size_t i = 0; i < deferred_page_unloads_.size(); ++i) + pages_[deferred_page_unloads_[i]]->Unload(); + deferred_page_unloads_.clear(); + return rv; +} + +uint32_t PDFiumEngine::QuerySupportedPrintOutputFormats() { + if (!HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY)) + return 0; + return PP_PRINTOUTPUTFORMAT_PDF; +} + +void PDFiumEngine::PrintBegin() { + FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WP); +} + +pp::Resource PDFiumEngine::PrintPages( + const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count, + const PP_PrintSettings_Dev& print_settings) { + if (HasPermission(PDFEngine::PERMISSION_PRINT_HIGH_QUALITY)) + return PrintPagesAsPDF(page_ranges, page_range_count, print_settings); + else if (HasPermission(PDFEngine::PERMISSION_PRINT_LOW_QUALITY)) + return PrintPagesAsRasterPDF(page_ranges, page_range_count, print_settings); + return pp::Resource(); +} + +pp::Buffer_Dev PDFiumEngine::PrintPagesAsRasterPDF( + const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count, + const PP_PrintSettings_Dev& print_settings) { + if (!page_range_count) + return pp::Buffer_Dev(); + + // If document is not downloaded yet, disable printing. + if (doc_ && !doc_loader_.IsDocumentComplete()) + return pp::Buffer_Dev(); + + FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument(); + if (!output_doc) + return pp::Buffer_Dev(); + + SaveSelectedFormForPrint(); + + std::vector<PDFiumPage> pages_to_print; + // width and height of source PDF pages. + std::vector<std::pair<double, double> > source_page_sizes; + // Collect pages to print and sizes of source pages. + std::vector<uint32_t> page_numbers = + GetPageNumbersFromPrintPageNumberRange(page_ranges, page_range_count); + for (size_t i = 0; i < page_numbers.size(); ++i) { + uint32_t page_number = page_numbers[i]; + FPDF_PAGE pdf_page = FPDF_LoadPage(doc_, page_number); + double source_page_width = FPDF_GetPageWidth(pdf_page); + double source_page_height = FPDF_GetPageHeight(pdf_page); + source_page_sizes.push_back(std::make_pair(source_page_width, + source_page_height)); + + int width_in_pixels = ConvertUnit(source_page_width, + static_cast<int>(kPointsPerInch), + print_settings.dpi); + int height_in_pixels = ConvertUnit(source_page_height, + static_cast<int>(kPointsPerInch), + print_settings.dpi); + + pp::Rect rect(width_in_pixels, height_in_pixels); + pages_to_print.push_back(PDFiumPage(this, page_number, rect, true)); + FPDF_ClosePage(pdf_page); + } + +#if defined(OS_LINUX) + g_last_instance_id = client_->GetPluginInstance()->pp_instance(); +#endif + + size_t i = 0; + for (; i < pages_to_print.size(); ++i) { + double source_page_width = source_page_sizes[i].first; + double source_page_height = source_page_sizes[i].second; + const pp::Size& bitmap_size(pages_to_print[i].rect().size()); + + // Use temp_doc to compress image by saving PDF to buffer. + FPDF_DOCUMENT temp_doc = FPDF_CreateNewDocument(); + if (!temp_doc) + break; + + FPDF_PAGE output_page = FPDFPage_New(temp_doc, 0, source_page_width, + source_page_height); + + pp::ImageData image = pp::ImageData(client_->GetPluginInstance(), + PP_IMAGEDATAFORMAT_BGRA_PREMUL, + bitmap_size, + false); + + FPDF_BITMAP bitmap = FPDFBitmap_CreateEx(bitmap_size.width(), + bitmap_size.height(), + FPDFBitmap_BGRx, + image.data(), + image.stride()); + + // Clear the bitmap + FPDFBitmap_FillRect(bitmap, 0, 0, bitmap_size.width(), + bitmap_size.height(), 255, 255, 255, 255); + + pp::Rect page_rect = pages_to_print[i].rect(); + FPDF_RenderPageBitmap(bitmap, pages_to_print[i].GetPrintPage(), + page_rect.x(), page_rect.y(), + page_rect.width(), page_rect.height(), + print_settings.orientation, + FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH); + + double ratio_x = (static_cast<double>(bitmap_size.width()) * + kPointsPerInch) / print_settings.dpi; + double ratio_y = (static_cast<double>(bitmap_size.height()) * + kPointsPerInch) / print_settings.dpi; + + // Add the bitmap to an image object and add the image object to the output + // page. + FPDF_PAGEOBJECT img_obj = FPDFPageObj_NewImgeObj(output_doc); + FPDFImageObj_SetBitmap(&output_page, 1, img_obj, bitmap); + FPDFImageObj_SetMatrix(img_obj, ratio_x, 0, 0, ratio_y, 0, 0); + FPDFPage_InsertObject(output_page, img_obj); + FPDFPage_GenerateContent(output_page); + FPDF_ClosePage(output_page); + + pages_to_print[i].ClosePrintPage(); + FPDFBitmap_Destroy(bitmap); + + pp::Buffer_Dev buffer = GetFlattenedPrintData(temp_doc); + FPDF_CloseDocument(temp_doc); + + PDFiumMemBufferFileRead file_read(buffer.data(), buffer.size()); + temp_doc = FPDF_LoadCustomDocument(&file_read, NULL); + if (!temp_doc) + break; + + FPDF_BOOL imported = FPDF_ImportPages(output_doc, temp_doc, "1", i); + FPDF_CloseDocument(temp_doc); + if (!imported) + break; + } + + pp::Buffer_Dev buffer; + if (i == pages_to_print.size()) { + FPDF_CopyViewerPreferences(output_doc, doc_); + FitContentsToPrintableAreaIfRequired(output_doc, print_settings); + // Now flatten all the output pages. + buffer = GetFlattenedPrintData(output_doc); + } + FPDF_CloseDocument(output_doc); + return buffer; +} + +pp::Buffer_Dev PDFiumEngine::GetFlattenedPrintData(const FPDF_DOCUMENT& doc) { + int page_count = FPDF_GetPageCount(doc); + bool flatten_succeeded = true; + for (int i = 0; i < page_count; ++i) { + FPDF_PAGE page = FPDF_LoadPage(doc, i); + DCHECK(page); + if (page) { + int flatten_ret = FPDFPage_Flatten(page, FLAT_PRINT); + FPDF_ClosePage(page); + if (flatten_ret == FLATTEN_FAIL) { + flatten_succeeded = false; + break; + } + } else { + flatten_succeeded = false; + break; + } + } + if (!flatten_succeeded) { + FPDF_CloseDocument(doc); + return pp::Buffer_Dev(); + } + + pp::Buffer_Dev buffer; + PDFiumMemBufferFileWrite output_file_write; + if (FPDF_SaveAsCopy(doc, &output_file_write, 0)) { + buffer = pp::Buffer_Dev( + client_->GetPluginInstance(), output_file_write.size()); + if (!buffer.is_null()) { + memcpy(buffer.data(), output_file_write.buffer().c_str(), + output_file_write.size()); + } + } + return buffer; +} + +pp::Buffer_Dev PDFiumEngine::PrintPagesAsPDF( + const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count, + const PP_PrintSettings_Dev& print_settings) { + if (!page_range_count) + return pp::Buffer_Dev(); + + DCHECK(doc_); + FPDF_DOCUMENT output_doc = FPDF_CreateNewDocument(); + if (!output_doc) + return pp::Buffer_Dev(); + + SaveSelectedFormForPrint(); + + std::string page_number_str; + for (uint32_t index = 0; index < page_range_count; ++index) { + if (!page_number_str.empty()) + page_number_str.append(","); + page_number_str.append( + base::IntToString(page_ranges[index].first_page_number + 1)); + if (page_ranges[index].first_page_number != + page_ranges[index].last_page_number) { + page_number_str.append("-"); + page_number_str.append( + base::IntToString(page_ranges[index].last_page_number + 1)); + } + } + + std::vector<uint32_t> page_numbers = + GetPageNumbersFromPrintPageNumberRange(page_ranges, page_range_count); + for (size_t i = 0; i < page_numbers.size(); ++i) { + uint32_t page_number = page_numbers[i]; + pages_[page_number]->GetPage(); + if (!IsPageVisible(page_numbers[i])) + pages_[page_number]->Unload(); + } + + FPDF_CopyViewerPreferences(output_doc, doc_); + if (!FPDF_ImportPages(output_doc, doc_, page_number_str.c_str(), 0)) { + FPDF_CloseDocument(output_doc); + return pp::Buffer_Dev(); + } + + FitContentsToPrintableAreaIfRequired(output_doc, print_settings); + + // Now flatten all the output pages. + pp::Buffer_Dev buffer = GetFlattenedPrintData(output_doc); + FPDF_CloseDocument(output_doc); + return buffer; +} + +void PDFiumEngine::FitContentsToPrintableAreaIfRequired( + const FPDF_DOCUMENT& doc, const PP_PrintSettings_Dev& print_settings) { + // Check to see if we need to fit pdf contents to printer paper size. + if (print_settings.print_scaling_option != + PP_PRINTSCALINGOPTION_SOURCE_SIZE) { + int num_pages = FPDF_GetPageCount(doc); + // In-place transformation is more efficient than creating a new + // transformed document from the source document. Therefore, transform + // every page to fit the contents in the selected printer paper. + for (int i = 0; i < num_pages; ++i) { + FPDF_PAGE page = FPDF_LoadPage(doc, i); + TransformPDFPageForPrinting(page, print_settings); + FPDF_ClosePage(page); + } + } +} + +void PDFiumEngine::SaveSelectedFormForPrint() { + FORM_ForceToKillFocus(form_); + client_->FormTextFieldFocusChange(false); +} + +void PDFiumEngine::PrintEnd() { + FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_DP); +} + +PDFiumPage::Area PDFiumEngine::GetCharIndex( + const pp::MouseInputEvent& event, int* page_index, + int* char_index, PDFiumPage::LinkTarget* target) { + // First figure out which page this is in. + pp::Point mouse_point = event.GetPosition(); + pp::Point point( + static_cast<int>((mouse_point.x() + position_.x()) / current_zoom_), + static_cast<int>((mouse_point.y() + position_.y()) / current_zoom_)); + return GetCharIndex(point, page_index, char_index, target); +} + +PDFiumPage::Area PDFiumEngine::GetCharIndex( + const pp::Point& point, + int* page_index, + int* char_index, + PDFiumPage::LinkTarget* target) { + int page = -1; + for (size_t i = 0; i < visible_pages_.size(); ++i) { + if (pages_[visible_pages_[i]]->rect().Contains(point)) { + page = visible_pages_[i]; + break; + } + } + if (page == -1) + return PDFiumPage::NONSELECTABLE_AREA; + + // If the page hasn't finished rendering, calling into the page sometimes + // leads to hangs. + for (size_t i = 0; i < progressive_paints_.size(); ++i) { + if (progressive_paints_[i].page_index == page) + return PDFiumPage::NONSELECTABLE_AREA; + } + + *page_index = page; + return pages_[page]->GetCharIndex(point, current_rotation_, char_index, + target); +} + +bool PDFiumEngine::OnMouseDown(const pp::MouseInputEvent& event) { + if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT) + return false; + + SelectionChangeInvalidator selection_invalidator(this); + selection_.clear(); + + int page_index = -1; + int char_index = -1; + PDFiumPage::LinkTarget target; + PDFiumPage::Area area = GetCharIndex(event, &page_index, + &char_index, &target); + if (area == PDFiumPage::WEBLINK_AREA) { + bool open_in_new_tab = !!(event.GetModifiers() & kDefaultKeyModifier); + client_->NavigateTo(target.url, open_in_new_tab); + client_->FormTextFieldFocusChange(false); + return true; + } + + if (area == PDFiumPage::DOCLINK_AREA) { + client_->ScrollToPage(target.page); + client_->FormTextFieldFocusChange(false); + return true; + } + + if (page_index != -1) { + last_page_mouse_down_ = page_index; + double page_x, page_y; + pp::Point point = event.GetPosition(); + DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y); + + FORM_OnLButtonDown(form_, pages_[page_index]->GetPage(), 0, page_x, page_y); + int control = FPDPage_HasFormFieldAtPoint( + form_, pages_[page_index]->GetPage(), page_x, page_y); + if (control > FPDF_FORMFIELD_UNKNOWN) { // returns -1 sometimes... + client_->FormTextFieldFocusChange(control == FPDF_FORMFIELD_TEXTFIELD || + control == FPDF_FORMFIELD_COMBOBOX); + return true; // Return now before we get into the selection code. + } + } + + client_->FormTextFieldFocusChange(false); + + if (area != PDFiumPage::TEXT_AREA) + return true; // Return true so WebKit doesn't do its own highlighting. + + if (event.GetClickCount() == 1) { + OnSingleClick(page_index, char_index); + } else if (event.GetClickCount() == 2 || + event.GetClickCount() == 3) { + OnMultipleClick(event.GetClickCount(), page_index, char_index); + } + + return true; +} + +void PDFiumEngine::OnSingleClick(int page_index, int char_index) { + selecting_ = true; + selection_.push_back(PDFiumRange(pages_[page_index], char_index, 0)); +} + +void PDFiumEngine::OnMultipleClick(int click_count, + int page_index, + int char_index) { + // It would be more efficient if the SDK could support finding a space, but + // now it doesn't. + int start_index = char_index; + do { + base::char16 cur = pages_[page_index]->GetCharAtIndex(start_index); + // For double click, we want to select one word so we look for whitespace + // boundaries. For triple click, we want the whole line. + if (cur == '\n' || (click_count == 2 && (cur == ' ' || cur == '\t'))) + break; + } while (--start_index >= 0); + if (start_index) + start_index++; + + int end_index = char_index; + int total = pages_[page_index]->GetCharCount(); + while (end_index++ <= total) { + base::char16 cur = pages_[page_index]->GetCharAtIndex(end_index); + if (cur == '\n' || (click_count == 2 && (cur == ' ' || cur == '\t'))) + break; + } + + selection_.push_back(PDFiumRange( + pages_[page_index], start_index, end_index - start_index)); +} + +bool PDFiumEngine::OnMouseUp(const pp::MouseInputEvent& event) { + if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT) + return false; + + int page_index = -1; + int char_index = -1; + GetCharIndex(event, &page_index, &char_index, NULL); + if (page_index != -1) { + double page_x, page_y; + pp::Point point = event.GetPosition(); + DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y); + FORM_OnLButtonUp( + form_, pages_[page_index]->GetPage(), 0, page_x, page_y); + } + + if (!selecting_) + return false; + + selecting_ = false; + return true; +} + +bool PDFiumEngine::OnMouseMove(const pp::MouseInputEvent& event) { + int page_index = -1; + int char_index = -1; + PDFiumPage::Area area = GetCharIndex(event, &page_index, &char_index, NULL); + if (!selecting_) { + PP_CursorType_Dev cursor; + switch (area) { + case PDFiumPage::TEXT_AREA: + cursor = PP_CURSORTYPE_IBEAM; + break; + case PDFiumPage::WEBLINK_AREA: + case PDFiumPage::DOCLINK_AREA: + cursor = PP_CURSORTYPE_HAND; + break; + case PDFiumPage::NONSELECTABLE_AREA: + default: + cursor = PP_CURSORTYPE_POINTER; + break; + } + + if (page_index != -1) { + double page_x, page_y; + pp::Point point = event.GetPosition(); + DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y); + + FORM_OnMouseMove(form_, pages_[page_index]->GetPage(), 0, page_x, page_y); + int control = FPDPage_HasFormFieldAtPoint( + form_, pages_[page_index]->GetPage(), page_x, page_y); + switch (control) { + case FPDF_FORMFIELD_PUSHBUTTON: + case FPDF_FORMFIELD_CHECKBOX: + case FPDF_FORMFIELD_RADIOBUTTON: + case FPDF_FORMFIELD_COMBOBOX: + case FPDF_FORMFIELD_LISTBOX: + cursor = PP_CURSORTYPE_HAND; + break; + case FPDF_FORMFIELD_TEXTFIELD: + cursor = PP_CURSORTYPE_IBEAM; + break; + default: + break; + } + } + + client_->UpdateCursor(cursor); + pp::Point point = event.GetPosition(); + std::string url = GetLinkAtPosition(event.GetPosition()); + if (url != link_under_cursor_) { + link_under_cursor_ = url; + pp::PDF::SetLinkUnderCursor(GetPluginInstance(), url.c_str()); + } + // No need to swallow the event, since this might interfere with the + // scrollbars if the user is dragging them. + return false; + } + + // We're selecting but right now we're not over text, so don't change the + // current selection. + if (area != PDFiumPage::TEXT_AREA && area != PDFiumPage::WEBLINK_AREA && + area != PDFiumPage::DOCLINK_AREA) { + return false; + } + + SelectionChangeInvalidator selection_invalidator(this); + + // Check if the user has descreased their selection area and we need to remove + // pages from selection_. + for (size_t i = 0; i < selection_.size(); ++i) { + if (selection_[i].page_index() == page_index) { + // There should be no other pages after this. + selection_.erase(selection_.begin() + i + 1, selection_.end()); + break; + } + } + + if (selection_.size() == 0) + return false; + + int last = selection_.size() - 1; + if (selection_[last].page_index() == page_index) { + // Selecting within a page. + int count; + if (char_index >= selection_[last].char_index()) { + // Selecting forward. + count = char_index - selection_[last].char_index() + 1; + } else { + count = char_index - selection_[last].char_index() - 1; + } + selection_[last].SetCharCount(count); + } else if (selection_[last].page_index() < page_index) { + // Selecting into the next page. + + // First make sure that there are no gaps in selection, i.e. if mousedown on + // page one but we only get mousemove over page three, we want page two. + for (int i = selection_[last].page_index() + 1; i < page_index; ++i) { + selection_.push_back(PDFiumRange(pages_[i], 0, + pages_[i]->GetCharCount())); + } + + int count = pages_[selection_[last].page_index()]->GetCharCount(); + selection_[last].SetCharCount(count - selection_[last].char_index()); + selection_.push_back(PDFiumRange(pages_[page_index], 0, char_index)); + } else { + // Selecting into the previous page. + selection_[last].SetCharCount(-selection_[last].char_index()); + + // First make sure that there are no gaps in selection, i.e. if mousedown on + // page three but we only get mousemove over page one, we want page two. + for (int i = selection_[last].page_index() - 1; i > page_index; --i) { + selection_.push_back(PDFiumRange(pages_[i], 0, + pages_[i]->GetCharCount())); + } + + int count = pages_[page_index]->GetCharCount(); + selection_.push_back( + PDFiumRange(pages_[page_index], count, count - char_index)); + } + + return true; +} + +bool PDFiumEngine::OnKeyDown(const pp::KeyboardInputEvent& event) { + if (last_page_mouse_down_ == -1) + return false; + + bool rv = !!FORM_OnKeyDown( + form_, pages_[last_page_mouse_down_]->GetPage(), + event.GetKeyCode(), event.GetModifiers()); + + if (event.GetKeyCode() == ui::VKEY_BACK || + event.GetKeyCode() == ui::VKEY_ESCAPE) { + // Chrome doesn't send char events for backspace or escape keys, see + // PlatformKeyboardEventBuilder::isCharacterKey() and + // http://chrome-corpsvn.mtv.corp.google.com/viewvc?view=rev&root=chrome&revision=31805 + // for more information. So just fake one since PDFium uses it. + std::string str; + str.push_back(event.GetKeyCode()); + pp::KeyboardInputEvent synthesized(pp::KeyboardInputEvent( + client_->GetPluginInstance(), + PP_INPUTEVENT_TYPE_CHAR, + event.GetTimeStamp(), + event.GetModifiers(), + event.GetKeyCode(), + str)); + OnChar(synthesized); + } + + return rv; +} + +bool PDFiumEngine::OnKeyUp(const pp::KeyboardInputEvent& event) { + if (last_page_mouse_down_ == -1) + return false; + + return !!FORM_OnKeyUp( + form_, pages_[last_page_mouse_down_]->GetPage(), + event.GetKeyCode(), event.GetModifiers()); +} + +bool PDFiumEngine::OnChar(const pp::KeyboardInputEvent& event) { + if (last_page_mouse_down_ == -1) + return false; + + base::string16 str = base::UTF8ToUTF16(event.GetCharacterText().AsString()); + return !!FORM_OnChar( + form_, pages_[last_page_mouse_down_]->GetPage(), + str[0], + event.GetModifiers()); +} + +void PDFiumEngine::StartFind(const char* text, bool case_sensitive) { + // We can get a call to StartFind before we have any page information (i.e. + // before the first call to LoadDocument has happened). Handle this case. + if (pages_.empty()) + return; + + bool first_search = false; + int character_to_start_searching_from = 0; + if (current_find_text_ != text) { // First time we search for this text. + first_search = true; + std::vector<PDFiumRange> old_selection = selection_; + StopFind(); + current_find_text_ = text; + + if (old_selection.empty()) { + // Start searching from the beginning of the document. + next_page_to_search_ = 0; + last_page_to_search_ = pages_.size() - 1; + last_character_index_to_search_ = -1; + } else { + // There's a current selection, so start from it. + next_page_to_search_ = old_selection[0].page_index(); + last_character_index_to_search_ = old_selection[0].char_index(); + character_to_start_searching_from = old_selection[0].char_index(); + last_page_to_search_ = next_page_to_search_; + } + } + + int current_page = next_page_to_search_; + + if (pages_[current_page]->available()) { + base::string16 str = base::UTF8ToUTF16(text); + // Don't use PDFium to search for now, since it doesn't support unicode text. + // Leave the code for now to avoid bit-rot, in case it's fixed later. + if (0) { + SearchUsingPDFium( + str, case_sensitive, first_search, character_to_start_searching_from, + current_page); + } else { + SearchUsingICU( + str, case_sensitive, first_search, character_to_start_searching_from, + current_page); + } + + if (!IsPageVisible(current_page)) + pages_[current_page]->Unload(); + } + + if (next_page_to_search_ != last_page_to_search_ || + (first_search && last_character_index_to_search_ != -1)) { + ++next_page_to_search_; + } + + if (next_page_to_search_ == static_cast<int>(pages_.size())) + next_page_to_search_ = 0; + // If there's only one page in the document and we start searching midway, + // then we'll want to search the page one more time. + bool end_of_search = + next_page_to_search_ == last_page_to_search_ && + // Only one page but didn't start midway. + ((pages_.size() == 1 && last_character_index_to_search_ == -1) || + // Started midway, but only 1 page and we already looped around. + (pages_.size() == 1 && !first_search) || + // Started midway, and we've just looped around. + (pages_.size() > 1 && current_page == next_page_to_search_)); + + if (end_of_search) { + // Send the final notification. + client_->NotifyNumberOfFindResultsChanged(find_results_.size(), true); + } else { + pp::CompletionCallback callback = + find_factory_.NewCallback(&PDFiumEngine::ContinueFind); + pp::Module::Get()->core()->CallOnMainThread( + 0, callback, case_sensitive ? 1 : 0); + } +} + +void PDFiumEngine::SearchUsingPDFium(const base::string16& term, + bool case_sensitive, + bool first_search, + int character_to_start_searching_from, + int current_page) { + // Find all the matches in the current page. + unsigned long flags = case_sensitive ? FPDF_MATCHCASE : 0; + FPDF_SCHHANDLE find = FPDFText_FindStart( + pages_[current_page]->GetTextPage(), + reinterpret_cast<const unsigned short*>(term.c_str()), + flags, character_to_start_searching_from); + + // Note: since we search one page at a time, we don't find matches across + // page boundaries. We could do this manually ourself, but it seems low + // priority since Reader itself doesn't do it. + while (FPDFText_FindNext(find)) { + PDFiumRange result(pages_[current_page], + FPDFText_GetSchResultIndex(find), + FPDFText_GetSchCount(find)); + + if (!first_search && + last_character_index_to_search_ != -1 && + result.page_index() == last_page_to_search_ && + result.char_index() >= last_character_index_to_search_) { + break; + } + + AddFindResult(result); + } + + FPDFText_FindClose(find); +} + +void PDFiumEngine::SearchUsingICU(const base::string16& term, + bool case_sensitive, + bool first_search, + int character_to_start_searching_from, + int current_page) { + base::string16 page_text; + int text_length = pages_[current_page]->GetCharCount(); + if (character_to_start_searching_from) { + text_length -= character_to_start_searching_from; + } else if (!first_search && + last_character_index_to_search_ != -1 && + current_page == last_page_to_search_) { + text_length = last_character_index_to_search_; + } + if (text_length <= 0) + return; + unsigned short* data = + reinterpret_cast<unsigned short*>(WriteInto(&page_text, text_length + 1)); + FPDFText_GetText(pages_[current_page]->GetTextPage(), + character_to_start_searching_from, + text_length, + data); + std::vector<PDFEngine::Client::SearchStringResult> results; + client_->SearchString( + page_text.c_str(), term.c_str(), case_sensitive, &results); + for (size_t i = 0; i < results.size(); ++i) { + // Need to map the indexes from the page text, which may have generated + // characters like space etc, to character indices from the page. + int temp_start = results[i].start_index + character_to_start_searching_from; + int start = FPDFText_GetCharIndexFromTextIndex( + pages_[current_page]->GetTextPage(), temp_start); + int end = FPDFText_GetCharIndexFromTextIndex( + pages_[current_page]->GetTextPage(), + temp_start + results[i].length); + AddFindResult(PDFiumRange(pages_[current_page], start, end - start)); + } +} + +void PDFiumEngine::AddFindResult(const PDFiumRange& result) { + // Figure out where to insert the new location, since we could have + // started searching midway and now we wrapped. + size_t i; + int page_index = result.page_index(); + int char_index = result.char_index(); + for (i = 0; i < find_results_.size(); ++i) { + if (find_results_[i].page_index() > page_index || + (find_results_[i].page_index() == page_index && + find_results_[i].char_index() > char_index)) { + break; + } + } + find_results_.insert(find_results_.begin() + i, result); + UpdateTickMarks(); + + if (current_find_index_ == -1) { + // Select the first match. + SelectFindResult(true); + } else if (static_cast<int>(i) <= current_find_index_) { + // Update the current match index + current_find_index_++; + client_->NotifySelectedFindResultChanged(current_find_index_); + } + client_->NotifyNumberOfFindResultsChanged(find_results_.size(), false); +} + +bool PDFiumEngine::SelectFindResult(bool forward) { + if (find_results_.empty()) { + NOTREACHED(); + return false; + } + + SelectionChangeInvalidator selection_invalidator(this); + + // Move back/forward through the search locations we previously found. + if (forward) { + if (++current_find_index_ == static_cast<int>(find_results_.size())) + current_find_index_ = 0; + } else { + if (--current_find_index_ < 0) { + current_find_index_ = find_results_.size() - 1; + } + } + + // Update the selection before telling the client to scroll, since it could + // paint then. + selection_.clear(); + selection_.push_back(find_results_[current_find_index_]); + + // If the result is not in view, scroll to it. + size_t i; + pp::Rect bounding_rect; + pp::Rect visible_rect = GetVisibleRect(); + // Use zoom of 1.0 since visible_rect is without zoom. + std::vector<pp::Rect> rects = find_results_[current_find_index_]. + GetScreenRects(pp::Point(), 1.0, current_rotation_); + for (i = 0; i < rects.size(); ++i) + bounding_rect = bounding_rect.Union(rects[i]); + if (!visible_rect.Contains(bounding_rect)) { + pp::Point center = bounding_rect.CenterPoint(); + // Make the page centered. + int new_y = static_cast<int>(center.y() * current_zoom_) - + static_cast<int>(visible_rect.height() * current_zoom_ / 2); + if (new_y < 0) + new_y = 0; + client_->ScrollToY(new_y); + + // Only move horizontally if it's not visible. + if (center.x() < visible_rect.x() || center.x() > visible_rect.right()) { + int new_x = static_cast<int>(center.x() * current_zoom_) - + static_cast<int>(visible_rect.width() * current_zoom_ / 2); + if (new_x < 0) + new_x = 0; + client_->ScrollToX(new_x); + } + } + + client_->NotifySelectedFindResultChanged(current_find_index_); + + return true; +} + +void PDFiumEngine::StopFind() { + SelectionChangeInvalidator selection_invalidator(this); + + selection_.clear(); + selecting_ = false; + find_results_.clear(); + next_page_to_search_ = -1; + last_page_to_search_ = -1; + last_character_index_to_search_ = -1; + current_find_index_ = -1; + current_find_text_.clear(); + UpdateTickMarks(); + find_factory_.CancelAll(); +} + +void PDFiumEngine::UpdateTickMarks() { + std::vector<pp::Rect> tickmarks; + for (size_t i = 0; i < find_results_.size(); ++i) { + pp::Rect rect; + // Always use an origin of 0,0 since scroll positions don't affect tickmark. + std::vector<pp::Rect> rects = find_results_[i].GetScreenRects( + pp::Point(0, 0), current_zoom_, current_rotation_); + for (size_t j = 0; j < rects.size(); ++j) + rect = rect.Union(rects[j]); + tickmarks.push_back(rect); + } + + client_->UpdateTickMarks(tickmarks); +} + +void PDFiumEngine::ZoomUpdated(double new_zoom_level) { + CancelPaints(); + + current_zoom_ = new_zoom_level; + + CalculateVisiblePages(); + UpdateTickMarks(); +} + +void PDFiumEngine::RotateClockwise() { + current_rotation_ = (current_rotation_ + 1) % 4; + InvalidateAllPages(); +} + +void PDFiumEngine::RotateCounterclockwise() { + current_rotation_ = (current_rotation_ - 1) % 4; + InvalidateAllPages(); +} + +void PDFiumEngine::InvalidateAllPages() { + selection_.clear(); + find_results_.clear(); + + CancelPaints(); + LoadPageInfo(true); + UpdateTickMarks(); + client_->Invalidate(pp::Rect(plugin_size_)); +} + +std::string PDFiumEngine::GetSelectedText() { + base::string16 result; + for (size_t i = 0; i < selection_.size(); ++i) { + if (i > 0 && + selection_[i - 1].page_index() > selection_[i].page_index()) { + result = selection_[i].GetText() + result; + } else { + result.append(selection_[i].GetText()); + } + } + + return base::UTF16ToUTF8(result); +} + +std::string PDFiumEngine::GetLinkAtPosition(const pp::Point& point) { + int temp; + PDFiumPage::LinkTarget target; + PDFiumPage::Area area = GetCharIndex(point, &temp, &temp, &target); + if (area == PDFiumPage::WEBLINK_AREA) + return target.url; + return std::string(); +} + +bool PDFiumEngine::IsSelecting() { + return selecting_; +} + +bool PDFiumEngine::HasPermission(DocumentPermission permission) const { + switch (permission) { + case PERMISSION_COPY: + return (permissions_ & kPDFPermissionCopyMask) != 0; + case PERMISSION_COPY_ACCESSIBLE: + return (permissions_ & kPDFPermissionCopyAccessibleMask) != 0; + case PERMISSION_PRINT_LOW_QUALITY: + return (permissions_ & kPDFPermissionPrintLowQualityMask) != 0; + case PERMISSION_PRINT_HIGH_QUALITY: + return (permissions_ & kPDFPermissionPrintLowQualityMask) != 0 && + (permissions_ & kPDFPermissionPrintHighQualityMask) != 0; + default: + return true; + }; +} + +void PDFiumEngine::SelectAll() { + SelectionChangeInvalidator selection_invalidator(this); + + selection_.clear(); + for (size_t i = 0; i < pages_.size(); ++i) + if (pages_[i]->available()) { + selection_.push_back(PDFiumRange(pages_[i], 0, + pages_[i]->GetCharCount())); + } +} + +int PDFiumEngine::GetNumberOfPages() { + return pages_.size(); +} + +int PDFiumEngine::GetNamedDestinationPage(const std::string& destination) { + // Look for the destination. + FPDF_DEST dest = FPDF_GetNamedDestByName(doc_, destination.c_str()); + if (!dest) { + // Look for a bookmark with the same name. + base::string16 destination_wide = base::UTF8ToUTF16(destination); + FPDF_WIDESTRING destination_pdf_wide = + reinterpret_cast<FPDF_WIDESTRING>(destination_wide.c_str()); + FPDF_BOOKMARK bookmark = FPDFBookmark_Find(doc_, destination_pdf_wide); + if (!bookmark) + return -1; + dest = FPDFBookmark_GetDest(doc_, bookmark); + } + return dest ? FPDFDest_GetPageIndex(doc_, dest) : -1; +} + +int PDFiumEngine::GetFirstVisiblePage() { + CalculateVisiblePages(); + return first_visible_page_; +} + +int PDFiumEngine::GetMostVisiblePage() { + CalculateVisiblePages(); + return most_visible_page_; +} + +pp::Rect PDFiumEngine::GetPageRect(int index) { + pp::Rect rc(pages_[index]->rect()); + rc.Inset(-kPageShadowLeft, -kPageShadowTop, + -kPageShadowRight, -kPageShadowBottom); + return rc; +} + +pp::Rect PDFiumEngine::GetPageContentsRect(int index) { + return GetScreenRect(pages_[index]->rect()); +} + +void PDFiumEngine::PaintThumbnail(pp::ImageData* image_data, int index) { + FPDF_BITMAP bitmap = FPDFBitmap_CreateEx( + image_data->size().width(), image_data->size().height(), + FPDFBitmap_BGRx, image_data->data(), image_data->stride()); + + if (pages_[index]->available()) { + FPDFBitmap_FillRect( + bitmap, 0, 0, image_data->size().width(), image_data->size().height(), + 255, 255, 255, 255); + + FPDF_RenderPageBitmap( + bitmap, pages_[index]->GetPage(), 0, 0, image_data->size().width(), + image_data->size().height(), 0, GetRenderingFlags()); + } else { + FPDFBitmap_FillRect( + bitmap, 0, 0, image_data->size().width(), image_data->size().height(), + kPendingPageColorR, kPendingPageColorG, kPendingPageColorB, + kPendingPageColorA); + } + + FPDFBitmap_Destroy(bitmap); +} + +void PDFiumEngine::SetGrayscale(bool grayscale) { + render_grayscale_ = grayscale; +} + +void PDFiumEngine::OnCallback(int id) { + if (!timers_.count(id)) + return; + + timers_[id].second(id); + if (timers_.count(id)) // The callback might delete the timer. + client_->ScheduleCallback(id, timers_[id].first); +} + +std::string PDFiumEngine::GetPageAsJSON(int index) { + if (!(HasPermission(PERMISSION_COPY) || + HasPermission(PERMISSION_COPY_ACCESSIBLE))) { + return "{}"; + } + + if (index < 0 || static_cast<size_t>(index) > pages_.size() - 1) + return "{}"; + + scoped_ptr<base::Value> node( + pages_[index]->GetAccessibleContentAsValue(current_rotation_)); + std::string page_json; + base::JSONWriter::Write(node.get(), &page_json); + return page_json; +} + +bool PDFiumEngine::GetPrintScaling() { + return !!FPDF_VIEWERREF_GetPrintScaling(doc_); +} + +void PDFiumEngine::AppendBlankPages(int num_pages) { + DCHECK(num_pages != 0); + + if (!doc_) + return; + + selection_.clear(); + pending_pages_.clear(); + + // Delete all pages except the first one. + while (pages_.size() > 1) { + delete pages_.back(); + pages_.pop_back(); + FPDFPage_Delete(doc_, pages_.size()); + } + + // Calculate document size and all page sizes. + std::vector<pp::Rect> page_rects; + pp::Size page_size = GetPageSize(0); + page_size.Enlarge(kPageShadowLeft + kPageShadowRight, + kPageShadowTop + kPageShadowBottom); + pp::Size old_document_size = document_size_; + document_size_ = pp::Size(page_size.width(), 0); + for (int i = 0; i < num_pages; ++i) { + if (i != 0) { + // Add space for horizontal separator. + document_size_.Enlarge(0, kPageSeparatorThickness); + } + + pp::Rect rect(pp::Point(0, document_size_.height()), page_size); + page_rects.push_back(rect); + + document_size_.Enlarge(0, page_size.height()); + } + + // Create blank pages. + for (int i = 1; i < num_pages; ++i) { + pp::Rect page_rect(page_rects[i]); + page_rect.Inset(kPageShadowLeft, kPageShadowTop, + kPageShadowRight, kPageShadowBottom); + double width_in_points = + page_rect.width() * kPointsPerInch / kPixelsPerInch; + double height_in_points = + page_rect.height() * kPointsPerInch / kPixelsPerInch; + FPDFPage_New(doc_, i, width_in_points, height_in_points); + pages_.push_back(new PDFiumPage(this, i, page_rect, true)); + } + + CalculateVisiblePages(); + if (document_size_ != old_document_size) + client_->DocumentSizeUpdated(document_size_); +} + +void PDFiumEngine::LoadDocument() { + // Check if the document is ready for loading. If it isn't just bail for now, + // we will call LoadDocument() again later. + if (!doc_ && !doc_loader_.IsDocumentComplete() && + !FPDFAvail_IsDocAvail(fpdf_availability_, &download_hints_)) { + return; + } + + // If we're in the middle of getting a password, just return. We will retry + // loading the document after we get the password anyway. + if (getting_password_) + return; + + ScopedUnsupportedFeature scoped_unsupported_feature(this); + bool needs_password = false; + if (TryLoadingDoc(false, std::string(), &needs_password)) { + ContinueLoadingDocument(false, std::string()); + return; + } + if (needs_password) + GetPasswordAndLoad(); + else + client_->DocumentLoadFailed(); +} + +bool PDFiumEngine::TryLoadingDoc(bool with_password, + const std::string& password, + bool* needs_password) { + *needs_password = false; + if (doc_) + return true; + + const char* password_cstr = NULL; + if (with_password) { + password_cstr = password.c_str(); + password_tries_remaining_--; + } + if (doc_loader_.IsDocumentComplete()) + doc_ = FPDF_LoadCustomDocument(&file_access_, password_cstr); + else + doc_ = FPDFAvail_GetDocument(fpdf_availability_, password_cstr); + + if (!doc_ && FPDF_GetLastError() == FPDF_ERR_PASSWORD) + *needs_password = true; + + return doc_ != NULL; +} + +void PDFiumEngine::GetPasswordAndLoad() { + getting_password_ = true; + DCHECK(!doc_ && FPDF_GetLastError() == FPDF_ERR_PASSWORD); + client_->GetDocumentPassword(password_factory_.NewCallbackWithOutput( + &PDFiumEngine::OnGetPasswordComplete)); +} + +void PDFiumEngine::OnGetPasswordComplete(int32_t result, + const pp::Var& password) { + getting_password_ = false; + + bool password_given = false; + std::string password_text; + if (result == PP_OK && password.is_string()) { + password_text = password.AsString(); + if (!password_text.empty()) + password_given = true; + } + ContinueLoadingDocument(password_given, password_text); +} + +void PDFiumEngine::ContinueLoadingDocument( + bool has_password, + const std::string& password) { + ScopedUnsupportedFeature scoped_unsupported_feature(this); + + bool needs_password = false; + bool loaded = TryLoadingDoc(has_password, password, &needs_password); + bool password_incorrect = !loaded && has_password && needs_password; + if (password_incorrect && password_tries_remaining_ > 0) { + GetPasswordAndLoad(); + return; + } + + if (!doc_) { + client_->DocumentLoadFailed(); + return; + } + + if (FPDFDoc_GetPageMode(doc_) == PAGEMODE_USEOUTLINES) + client_->DocumentHasUnsupportedFeature("Bookmarks"); + + permissions_ = FPDF_GetDocPermissions(doc_); + + if (!form_) { + // Only returns 0 when data isn't available. If form data is downloaded, or + // if this isn't a form, returns positive values. + if (!doc_loader_.IsDocumentComplete() && + !FPDFAvail_IsFormAvail(fpdf_availability_, &download_hints_)) { + return; + } + + form_ = FPDFDOC_InitFormFillEnviroument( + doc_, static_cast<FPDF_FORMFILLINFO*>(this)); + FPDF_SetFormFieldHighlightColor(form_, 0, kFormHighlightColor); + FPDF_SetFormFieldHighlightAlpha(form_, kFormHighlightAlpha); + } + + if (!doc_loader_.IsDocumentComplete()) { + // Check if the first page is available. In a linearized PDF, that is not + // always page 0. Doing this gives us the default page size, since when the + // document is available, the first page is available as well. + CheckPageAvailable(FPDFAvail_GetFirstPageNum(doc_), &pending_pages_); + } + + LoadPageInfo(false); + + if (doc_loader_.IsDocumentComplete()) + FinishLoadingDocument(); +} + +void PDFiumEngine::LoadPageInfo(bool reload) { + pending_pages_.clear(); + pp::Size old_document_size = document_size_; + document_size_ = pp::Size(); + std::vector<pp::Rect> page_rects; + int page_count = FPDF_GetPageCount(doc_); + bool doc_complete = doc_loader_.IsDocumentComplete(); + for (int i = 0; i < page_count; ++i) { + if (i != 0) { + // Add space for horizontal separator. + document_size_.Enlarge(0, kPageSeparatorThickness); + } + + // Get page availability. If reload==false, and document is not loaded yet + // (we are using async loading) - mark all pages as unavailable. + // If reload==true (we have document constructed already), get page + // availability flag from already existing PDFiumPage class. + bool page_available = reload ? pages_[i]->available() : doc_complete; + + pp::Size size = page_available ? GetPageSize(i) : default_page_size_; + size.Enlarge(kPageShadowLeft + kPageShadowRight, + kPageShadowTop + kPageShadowBottom); + pp::Rect rect(pp::Point(0, document_size_.height()), size); + page_rects.push_back(rect); + + if (size.width() > document_size_.width()) + document_size_.set_width(size.width()); + + document_size_.Enlarge(0, size.height()); + } + + for (int i = 0; i < page_count; ++i) { + // Center pages relative to the entire document. + page_rects[i].set_x((document_size_.width() - page_rects[i].width()) / 2); + pp::Rect page_rect(page_rects[i]); + page_rect.Inset(kPageShadowLeft, kPageShadowTop, + kPageShadowRight, kPageShadowBottom); + if (reload) { + pages_[i]->set_rect(page_rect); + } else { + pages_.push_back(new PDFiumPage(this, i, page_rect, doc_complete)); + } + } + + CalculateVisiblePages(); + if (document_size_ != old_document_size) + client_->DocumentSizeUpdated(document_size_); +} + +void PDFiumEngine::CalculateVisiblePages() { + // Clear pending requests queue, since it may contain requests to the pages + // that are already invisible (after scrolling for example). + pending_pages_.clear(); + doc_loader_.ClearPendingRequests(); + + visible_pages_.clear(); + pp::Rect visible_rect(plugin_size_); + for (size_t i = 0; i < pages_.size(); ++i) { + // Check an entire PageScreenRect, since we might need to repaint side + // borders and shadows even if the page itself is not visible. + // For example, when user use pdf with different page sizes and zoomed in + // outside page area. + if (visible_rect.Intersects(GetPageScreenRect(i))) { + visible_pages_.push_back(i); + CheckPageAvailable(i, &pending_pages_); + } else { + // Need to unload pages when we're not using them, since some PDFs use a + // lot of memory. See http://crbug.com/48791 + if (defer_page_unload_) { + deferred_page_unloads_.push_back(i); + } else { + pages_[i]->Unload(); + } + + // If the last mouse down was on a page that's no longer visible, reset + // that variable so that we don't send keyboard events to it (the focus + // will be lost when the page is first closed anyways). + if (static_cast<int>(i) == last_page_mouse_down_) + last_page_mouse_down_ = -1; + } + } + + // Any pending highlighting of form fields will be invalid since these are in + // screen coordinates. + form_highlights_.clear(); + + if (visible_pages_.size() == 0) + first_visible_page_ = -1; + else + first_visible_page_ = visible_pages_.front(); + + int most_visible_page = first_visible_page_; + // Check if the next page is more visible than the first one. + if (most_visible_page != -1 && + pages_.size() > 0 && + most_visible_page < static_cast<int>(pages_.size()) - 1) { + pp::Rect rc_first = + visible_rect.Intersect(GetPageScreenRect(most_visible_page)); + pp::Rect rc_next = + visible_rect.Intersect(GetPageScreenRect(most_visible_page + 1)); + if (rc_next.height() > rc_first.height()) + most_visible_page++; + } + + SetCurrentPage(most_visible_page); +} + +bool PDFiumEngine::IsPageVisible(int index) const { + for (size_t i = 0; i < visible_pages_.size(); ++i) { + if (visible_pages_[i] == index) + return true; + } + + return false; +} + +bool PDFiumEngine::CheckPageAvailable(int index, std::vector<int>* pending) { + if (!doc_ || !form_) + return false; + + if (static_cast<int>(pages_.size()) > index && pages_[index]->available()) + return true; + + if (!FPDFAvail_IsPageAvail(fpdf_availability_, index, &download_hints_)) { + size_t j; + for (j = 0; j < pending->size(); ++j) { + if ((*pending)[j] == index) + break; + } + + if (j == pending->size()) + pending->push_back(index); + return false; + } + + if (static_cast<int>(pages_.size()) > index) + pages_[index]->set_available(true); + if (!default_page_size_.GetArea()) + default_page_size_ = GetPageSize(index); + return true; +} + +pp::Size PDFiumEngine::GetPageSize(int index) { + pp::Size size; + double width_in_points = 0; + double height_in_points = 0; + int rv = FPDF_GetPageSizeByIndex( + doc_, index, &width_in_points, &height_in_points); + + if (rv) { + int width_in_pixels = static_cast<int>( + width_in_points * kPixelsPerInch / kPointsPerInch); + int height_in_pixels = static_cast<int>( + height_in_points * kPixelsPerInch / kPointsPerInch); + if (current_rotation_ % 2 == 1) + std::swap(width_in_pixels, height_in_pixels); + size = pp::Size(width_in_pixels, height_in_pixels); + } + return size; +} + +int PDFiumEngine::StartPaint(int page_index, const pp::Rect& dirty) { + // For the first time we hit paint, do nothing and just record the paint for + // the next callback. This keeps the UI responsive in case the user is doing + // a lot of scrolling. + ProgressivePaint progressive; + progressive.rect = dirty; + progressive.page_index = page_index; + progressive.bitmap = NULL; + progressive.painted_ = false; + progressive_paints_.push_back(progressive); + return progressive_paints_.size() - 1; +} + +bool PDFiumEngine::ContinuePaint(int progressive_index, + pp::ImageData* image_data) { +#if defined(OS_LINUX) + g_last_instance_id = client_->GetPluginInstance()->pp_instance(); +#endif + + int rv; + int page_index = progressive_paints_[progressive_index].page_index; + last_progressive_start_time_ = base::Time::Now(); + if (progressive_paints_[progressive_index].bitmap) { + rv = FPDF_RenderPage_Continue( + pages_[page_index]->GetPage(), static_cast<IFSDK_PAUSE*>(this)); + } else { + pp::Rect dirty = progressive_paints_[progressive_index].rect; + progressive_paints_[progressive_index].bitmap = CreateBitmap(dirty, + image_data); + int start_x, start_y, size_x, size_y; + GetPDFiumRect( + page_index, dirty, &start_x, &start_y, &size_x, &size_y); + FPDFBitmap_FillRect( + progressive_paints_[progressive_index].bitmap, start_x, start_y, size_x, + size_y, 255, 255, 255, 255); + rv = FPDF_RenderPageBitmap_Start( + progressive_paints_[progressive_index].bitmap, + pages_[page_index]->GetPage(), start_x, start_y, size_x, size_y, + current_rotation_, + GetRenderingFlags(), static_cast<IFSDK_PAUSE*>(this)); + } + return rv != FPDF_RENDER_TOBECOUNTINUED; +} + +void PDFiumEngine::FinishPaint(int progressive_index, + pp::ImageData* image_data) { + int page_index = progressive_paints_[progressive_index].page_index; + pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect; + FPDF_BITMAP bitmap = progressive_paints_[progressive_index].bitmap; + int start_x, start_y, size_x, size_y; + GetPDFiumRect( + page_index, dirty_in_screen, &start_x, &start_y, &size_x, &size_y); + + // Draw the forms. + FPDF_FFLDraw( + form_, bitmap, pages_[page_index]->GetPage(), start_x, start_y, size_x, + size_y, current_rotation_, GetRenderingFlags()); + + FillPageSides(progressive_index); + + // Paint the page shadows. + PaintPageShadow(progressive_index, image_data); + + DrawSelections(progressive_index, image_data); + + FPDF_RenderPage_Close(pages_[page_index]->GetPage()); + FPDFBitmap_Destroy(bitmap); + progressive_paints_.erase(progressive_paints_.begin() + progressive_index); + + client_->DocumentPaintOccurred(); +} + +void PDFiumEngine::CancelPaints() { + for (size_t i = 0; i < progressive_paints_.size(); ++i) { + FPDF_RenderPage_Close(pages_[progressive_paints_[i].page_index]->GetPage()); + FPDFBitmap_Destroy(progressive_paints_[i].bitmap); + } + progressive_paints_.clear(); +} + +void PDFiumEngine::FillPageSides(int progressive_index) { + int page_index = progressive_paints_[progressive_index].page_index; + pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect; + FPDF_BITMAP bitmap = progressive_paints_[progressive_index].bitmap; + + pp::Rect page_rect = pages_[page_index]->rect(); + if (page_rect.x() > 0) { + pp::Rect left(0, + page_rect.y() - kPageShadowTop, + page_rect.x() - kPageShadowLeft, + page_rect.height() + kPageShadowTop + + kPageShadowBottom + kPageSeparatorThickness); + left = GetScreenRect(left).Intersect(dirty_in_screen); + + FPDFBitmap_FillRect( + bitmap, left.x() - dirty_in_screen.x(), + left.y() - dirty_in_screen.y(), left.width(), left.height(), + kBackgroundColorR, kBackgroundColorG, kBackgroundColorB, + kBackgroundColorA); + } + + if (page_rect.right() < document_size_.width()) { + pp::Rect right(page_rect.right() + kPageShadowRight, + page_rect.y() - kPageShadowTop, + document_size_.width() - page_rect.right() - + kPageShadowRight, + page_rect.height() + kPageShadowTop + + kPageShadowBottom + kPageSeparatorThickness); + right = GetScreenRect(right).Intersect(dirty_in_screen); + + FPDFBitmap_FillRect( + bitmap, right.x() - dirty_in_screen.x(), + right.y() - dirty_in_screen.y(), right.width(), right.height(), + kBackgroundColorR, kBackgroundColorG, kBackgroundColorB, + kBackgroundColorA); + } + + // Paint separator. + pp::Rect bottom(page_rect.x() - kPageShadowLeft, + page_rect.bottom() + kPageShadowBottom, + page_rect.width() + kPageShadowLeft + kPageShadowRight, + kPageSeparatorThickness); + bottom = GetScreenRect(bottom).Intersect(dirty_in_screen); + + FPDFBitmap_FillRect( + bitmap, bottom.x() - dirty_in_screen.x(), + bottom.y() - dirty_in_screen.y(), bottom.width(), bottom.height(), + kBackgroundColorR, kBackgroundColorG, kBackgroundColorB, + kBackgroundColorA); +} + +void PDFiumEngine::PaintPageShadow(int progressive_index, + pp::ImageData* image_data) { + int page_index = progressive_paints_[progressive_index].page_index; + pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect; + pp::Rect page_rect = pages_[page_index]->rect(); + pp::Rect shadow_rect(page_rect); + shadow_rect.Inset(-kPageShadowLeft, -kPageShadowTop, + -kPageShadowRight, -kPageShadowBottom); + + // Due to the rounding errors of the GetScreenRect it is possible to get + // different size shadows on the left and right sides even they are defined + // the same. To fix this issue let's calculate shadow rect and then shrink + // it by the size of the shadows. + shadow_rect = GetScreenRect(shadow_rect); + page_rect = shadow_rect; + + page_rect.Inset(static_cast<int>(ceil(kPageShadowLeft * current_zoom_)), + static_cast<int>(ceil(kPageShadowTop * current_zoom_)), + static_cast<int>(ceil(kPageShadowRight * current_zoom_)), + static_cast<int>(ceil(kPageShadowBottom * current_zoom_))); + + DrawPageShadow(page_rect, shadow_rect, dirty_in_screen, image_data); +} + +void PDFiumEngine::DrawSelections(int progressive_index, + pp::ImageData* image_data) { + int page_index = progressive_paints_[progressive_index].page_index; + pp::Rect dirty_in_screen = progressive_paints_[progressive_index].rect; + + void* region = NULL; + int stride; + GetRegion(dirty_in_screen.point(), image_data, ®ion, &stride); + + std::vector<pp::Rect> highlighted_rects; + pp::Rect visible_rect = GetVisibleRect(); + for (size_t k = 0; k < selection_.size(); ++k) { + if (selection_[k].page_index() != page_index) + continue; + std::vector<pp::Rect> rects = selection_[k].GetScreenRects( + visible_rect.point(), current_zoom_, current_rotation_); + for (size_t j = 0; j < rects.size(); ++j) { + pp::Rect visible_selection = rects[j].Intersect(dirty_in_screen); + if (visible_selection.IsEmpty()) + continue; + + visible_selection.Offset( + -dirty_in_screen.point().x(), -dirty_in_screen.point().y()); + Highlight(region, stride, visible_selection, &highlighted_rects); + } + } + + for (size_t k = 0; k < form_highlights_.size(); ++k) { + pp::Rect visible_selection = form_highlights_[k].Intersect(dirty_in_screen); + if (visible_selection.IsEmpty()) + continue; + + visible_selection.Offset( + -dirty_in_screen.point().x(), -dirty_in_screen.point().y()); + Highlight(region, stride, visible_selection, &highlighted_rects); + } + form_highlights_.clear(); +} + +void PDFiumEngine::PaintUnavailablePage(int page_index, + const pp::Rect& dirty, + pp::ImageData* image_data) { + int start_x, start_y, size_x, size_y; + GetPDFiumRect(page_index, dirty, &start_x, &start_y, &size_x, &size_y); + FPDF_BITMAP bitmap = CreateBitmap(dirty, image_data); + FPDFBitmap_FillRect(bitmap, start_x, start_y, size_x, size_y, + kPendingPageColorR, kPendingPageColorG, kPendingPageColorB, + kPendingPageColorA); + + pp::Rect loading_text_in_screen( + pages_[page_index]->rect().width() / 2, + pages_[page_index]->rect().y() + kLoadingTextVerticalOffset, 0, 0); + loading_text_in_screen = GetScreenRect(loading_text_in_screen); + FPDFBitmap_Destroy(bitmap); +} + +int PDFiumEngine::GetProgressiveIndex(int page_index) const { + for (size_t i = 0; i < progressive_paints_.size(); ++i) { + if (progressive_paints_[i].page_index == page_index) + return i; + } + return -1; +} + +FPDF_BITMAP PDFiumEngine::CreateBitmap(const pp::Rect& rect, + pp::ImageData* image_data) const { + void* region; + int stride; + GetRegion(rect.point(), image_data, ®ion, &stride); + if (!region) + return NULL; + return FPDFBitmap_CreateEx( + rect.width(), rect.height(), FPDFBitmap_BGRx, region, stride); +} + +void PDFiumEngine::GetPDFiumRect( + int page_index, const pp::Rect& rect, int* start_x, int* start_y, + int* size_x, int* size_y) const { + pp::Rect page_rect = GetScreenRect(pages_[page_index]->rect()); + page_rect.Offset(-rect.x(), -rect.y()); + + *start_x = page_rect.x(); + *start_y = page_rect.y(); + *size_x = page_rect.width(); + *size_y = page_rect.height(); +} + +int PDFiumEngine::GetRenderingFlags() const { + int flags = FPDF_LCD_TEXT | FPDF_NO_CATCH; + if (render_grayscale_) + flags |= FPDF_GRAYSCALE; + if (client_->IsPrintPreview()) + flags |= FPDF_PRINTING; + return flags; +} + +pp::Rect PDFiumEngine::GetVisibleRect() const { + pp::Rect rv; + rv.set_x(static_cast<int>(position_.x() / current_zoom_)); + rv.set_y(static_cast<int>(position_.y() / current_zoom_)); + rv.set_width(static_cast<int>(ceil(plugin_size_.width() / current_zoom_))); + rv.set_height(static_cast<int>(ceil(plugin_size_.height() / current_zoom_))); + return rv; +} + +pp::Rect PDFiumEngine::GetPageScreenRect(int page_index) const { + // Since we use this rect for creating the PDFium bitmap, also include other + // areas around the page that we might need to update such as the page + // separator and the sides if the page is narrower than the document. + return GetScreenRect(pp::Rect( + 0, + pages_[page_index]->rect().y() - kPageShadowTop, + document_size_.width(), + pages_[page_index]->rect().height() + kPageShadowTop + + kPageShadowBottom + kPageSeparatorThickness)); +} + +pp::Rect PDFiumEngine::GetScreenRect(const pp::Rect& rect) const { + pp::Rect rv; + int right = + static_cast<int>(ceil(rect.right() * current_zoom_ - position_.x())); + int bottom = + static_cast<int>(ceil(rect.bottom() * current_zoom_ - position_.y())); + + rv.set_x(static_cast<int>(rect.x() * current_zoom_ - position_.x())); + rv.set_y(static_cast<int>(rect.y() * current_zoom_ - position_.y())); + rv.set_width(right - rv.x()); + rv.set_height(bottom - rv.y()); + return rv; +} + +void PDFiumEngine::Highlight(void* buffer, + int stride, + const pp::Rect& rect, + std::vector<pp::Rect>* highlighted_rects) { + if (!buffer) + return; + + pp::Rect new_rect = rect; + for (size_t i = 0; i < highlighted_rects->size(); ++i) + new_rect = new_rect.Subtract((*highlighted_rects)[i]); + + highlighted_rects->push_back(new_rect); + int l = new_rect.x(); + int t = new_rect.y(); + int w = new_rect.width(); + int h = new_rect.height(); + + for (int y = t; y < t + h; ++y) { + for (int x = l; x < l + w; ++x) { + uint8* pixel = static_cast<uint8*>(buffer) + y * stride + x * 4; + // This is our highlight color. + pixel[0] = static_cast<uint8>( + pixel[0] * (kHighlightColorB / 255.0)); + pixel[1] = static_cast<uint8>( + pixel[1] * (kHighlightColorG / 255.0)); + pixel[2] = static_cast<uint8>( + pixel[2] * (kHighlightColorR / 255.0)); + } + } +} + +PDFiumEngine::SelectionChangeInvalidator::SelectionChangeInvalidator( + PDFiumEngine* engine) : engine_(engine) { + previous_origin_ = engine_->GetVisibleRect().point(); + GetVisibleSelectionsScreenRects(&old_selections_); +} + +PDFiumEngine::SelectionChangeInvalidator::~SelectionChangeInvalidator() { + // Offset the old selections if the document scrolled since we recorded them. + pp::Point offset = previous_origin_ - engine_->GetVisibleRect().point(); + for (size_t i = 0; i < old_selections_.size(); ++i) + old_selections_[i].Offset(offset); + + std::vector<pp::Rect> new_selections; + GetVisibleSelectionsScreenRects(&new_selections); + for (size_t i = 0; i < new_selections.size(); ++i) { + for (size_t j = 0; j < old_selections_.size(); ++j) { + if (new_selections[i] == old_selections_[j]) { + // Rectangle was selected before and after, so no need to invalidate it. + // Mark the rectangles by setting them to empty. + new_selections[i] = old_selections_[j] = pp::Rect(); + } + } + } + + for (size_t i = 0; i < old_selections_.size(); ++i) { + if (!old_selections_[i].IsEmpty()) + engine_->client_->Invalidate(old_selections_[i]); + } + for (size_t i = 0; i < new_selections.size(); ++i) { + if (!new_selections[i].IsEmpty()) + engine_->client_->Invalidate(new_selections[i]); + } + engine_->OnSelectionChanged(); +} + +void +PDFiumEngine::SelectionChangeInvalidator::GetVisibleSelectionsScreenRects( + std::vector<pp::Rect>* rects) { + pp::Rect visible_rect = engine_->GetVisibleRect(); + for (size_t i = 0; i < engine_->selection_.size(); ++i) { + int page_index = engine_->selection_[i].page_index(); + if (!engine_->IsPageVisible(page_index)) + continue; // This selection is on a page that's not currently visible. + + std::vector<pp::Rect> selection_rects = + engine_->selection_[i].GetScreenRects( + visible_rect.point(), + engine_->current_zoom_, + engine_->current_rotation_); + rects->insert(rects->end(), selection_rects.begin(), selection_rects.end()); + } +} + +void PDFiumEngine::DeviceToPage(int page_index, + float device_x, + float device_y, + double* page_x, + double* page_y) { + *page_x = *page_y = 0; + int temp_x = static_cast<int>((device_x + position_.x())/ current_zoom_ - + pages_[page_index]->rect().x()); + int temp_y = static_cast<int>((device_y + position_.y())/ current_zoom_ - + pages_[page_index]->rect().y()); + FPDF_DeviceToPage( + pages_[page_index]->GetPage(), 0, 0, + pages_[page_index]->rect().width(), pages_[page_index]->rect().height(), + current_rotation_, temp_x, temp_y, page_x, page_y); +} + +int PDFiumEngine::GetVisiblePageIndex(FPDF_PAGE page) { + for (size_t i = 0; i < visible_pages_.size(); ++i) { + if (pages_[visible_pages_[i]]->GetPage() == page) + return visible_pages_[i]; + } + return -1; +} + +void PDFiumEngine::SetCurrentPage(int index) { + if (index == most_visible_page_ || !form_) + return; + if (most_visible_page_ != -1 && called_do_document_action_) { + FPDF_PAGE old_page = pages_[most_visible_page_]->GetPage(); + FORM_DoPageAAction(old_page, form_, FPDFPAGE_AACTION_CLOSE); + } + most_visible_page_ = index; +#if defined(OS_LINUX) + g_last_instance_id = client_->GetPluginInstance()->pp_instance(); +#endif + if (most_visible_page_ != -1 && called_do_document_action_) { + FPDF_PAGE new_page = pages_[most_visible_page_]->GetPage(); + FORM_DoPageAAction(new_page, form_, FPDFPAGE_AACTION_OPEN); + } +} + +void PDFiumEngine::TransformPDFPageForPrinting( + FPDF_PAGE page, + const PP_PrintSettings_Dev& print_settings) { + // Get the source page width and height in points. + const double src_page_width = FPDF_GetPageWidth(page); + const double src_page_height = FPDF_GetPageHeight(page); + + const int src_page_rotation = FPDFPage_GetRotation(page); + const bool fit_to_page = print_settings.print_scaling_option == + PP_PRINTSCALINGOPTION_FIT_TO_PRINTABLE_AREA; + + pp::Size page_size(print_settings.paper_size); + pp::Rect content_rect(print_settings.printable_area); + const bool rotated = (src_page_rotation % 2 == 1); + SetPageSizeAndContentRect(rotated, + src_page_width > src_page_height, + &page_size, + &content_rect); + + // Compute the screen page width and height in points. + const int actual_page_width = + rotated ? page_size.height() : page_size.width(); + const int actual_page_height = + rotated ? page_size.width() : page_size.height(); + + const double scale_factor = CalculateScaleFactor(fit_to_page, content_rect, + src_page_width, + src_page_height, rotated); + + // Calculate positions for the clip box. + ClipBox source_clip_box; + CalculateClipBoxBoundary(page, scale_factor, rotated, &source_clip_box); + + // Calculate the translation offset values. + double offset_x = 0; + double offset_y = 0; + if (fit_to_page) { + CalculateScaledClipBoxOffset(content_rect, source_clip_box, &offset_x, + &offset_y); + } else { + CalculateNonScaledClipBoxOffset(content_rect, src_page_rotation, + actual_page_width, actual_page_height, + source_clip_box, &offset_x, &offset_y); + } + + // Reset the media box and crop box. When the page has crop box and media box, + // the plugin will display the crop box contents and not the entire media box. + // If the pages have different crop box values, the plugin will display a + // document of multiple page sizes. To give better user experience, we + // decided to have same crop box and media box values. Hence, the user will + // see a list of uniform pages. + FPDFPage_SetMediaBox(page, 0, 0, page_size.width(), page_size.height()); + FPDFPage_SetCropBox(page, 0, 0, page_size.width(), page_size.height()); + + // Transformation is not required, return. Do this check only after updating + // the media box and crop box. For more detailed information, please refer to + // the comment block right before FPDF_SetMediaBox and FPDF_GetMediaBox calls. + if (scale_factor == 1.0 && offset_x == 0 && offset_y == 0) + return; + + + // All the positions have been calculated, now manipulate the PDF. + FS_MATRIX matrix = {static_cast<float>(scale_factor), + 0, + 0, + static_cast<float>(scale_factor), + static_cast<float>(offset_x), + static_cast<float>(offset_y)}; + FS_RECTF cliprect = {static_cast<float>(source_clip_box.left+offset_x), + static_cast<float>(source_clip_box.top+offset_y), + static_cast<float>(source_clip_box.right+offset_x), + static_cast<float>(source_clip_box.bottom+offset_y)}; + FPDFPage_TransFormWithClip(page, &matrix, &cliprect); + FPDFPage_TransformAnnots(page, scale_factor, 0, 0, scale_factor, + offset_x, offset_y); +} + +void PDFiumEngine::DrawPageShadow(const pp::Rect& page_rc, + const pp::Rect& shadow_rc, + const pp::Rect& clip_rc, + pp::ImageData* image_data) { + pp::Rect page_rect(page_rc); + page_rect.Offset(page_offset_); + + pp::Rect shadow_rect(shadow_rc); + shadow_rect.Offset(page_offset_); + + pp::Rect clip_rect(clip_rc); + clip_rect.Offset(page_offset_); + + // Page drop shadow parameters. + const double factor = 0.5; + const uint32 background = (kBackgroundColorA << 24) | + (kBackgroundColorR << 16) | + (kBackgroundColorG << 8) | + kBackgroundColorB; + uint32 depth = std::max( + std::max(page_rect.x() - shadow_rect.x(), + page_rect.y() - shadow_rect.y()), + std::max(shadow_rect.right() - page_rect.right(), + shadow_rect.bottom() - page_rect.bottom())); + depth = static_cast<uint32>(depth * 1.5) + 1; + + // We need to check depth only to verify our copy of shadow matrix is correct. + if (!page_shadow_.get() || page_shadow_->depth() != depth) + page_shadow_.reset(new ShadowMatrix(depth, factor, background)); + + DCHECK(!image_data->is_null()); + DrawShadow(image_data, shadow_rect, page_rect, clip_rect, *page_shadow_); +} + +void PDFiumEngine::GetRegion(const pp::Point& location, + pp::ImageData* image_data, + void** region, + int* stride) const { + if (image_data->is_null()) { + DCHECK(plugin_size_.IsEmpty()); + *stride = 0; + *region = NULL; + return; + } + char* buffer = static_cast<char*>(image_data->data()); + *stride = image_data->stride(); + + pp::Point offset_location = location + page_offset_; + // TODO: update this when we support BIDI and scrollbars can be on the left. + if (!buffer || + !pp::Rect(page_offset_, plugin_size_).Contains(offset_location)) { + *region = NULL; + return; + } + + buffer += location.y() * (*stride); + buffer += (location.x() + page_offset_.x()) * 4; + *region = buffer; +} + +void PDFiumEngine::OnSelectionChanged() { + if (HasPermission(PDFEngine::PERMISSION_COPY)) + pp::PDF::SetSelectedText(GetPluginInstance(), GetSelectedText().c_str()); +} + +void PDFiumEngine::Form_Invalidate(FPDF_FORMFILLINFO* param, + FPDF_PAGE page, + double left, + double top, + double right, + double bottom) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + int page_index = engine->GetVisiblePageIndex(page); + if (page_index == -1) { + // This can sometime happen when the page is closed because it went off + // screen, and PDFium invalidates the control as it's being deleted. + return; + } + + pp::Rect rect = engine->pages_[page_index]->PageToScreen( + engine->GetVisibleRect().point(), engine->current_zoom_, left, top, right, + bottom, engine->current_rotation_); + engine->client_->Invalidate(rect); +} + +void PDFiumEngine::Form_OutputSelectedRect(FPDF_FORMFILLINFO* param, + FPDF_PAGE page, + double left, + double top, + double right, + double bottom) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + int page_index = engine->GetVisiblePageIndex(page); + if (page_index == -1) { + NOTREACHED(); + return; + } + pp::Rect rect = engine->pages_[page_index]->PageToScreen( + engine->GetVisibleRect().point(), engine->current_zoom_, left, top, right, + bottom, engine->current_rotation_); + engine->form_highlights_.push_back(rect); +} + +void PDFiumEngine::Form_SetCursor(FPDF_FORMFILLINFO* param, int cursor_type) { + // We don't need this since it's not enough to change the cursor in all + // scenarios. Instead, we check which form field we're under in OnMouseMove. +} + +int PDFiumEngine::Form_SetTimer(FPDF_FORMFILLINFO* param, + int elapse, + TimerCallback timer_func) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + engine->timers_[++engine->next_timer_id_] = + std::pair<int, TimerCallback>(elapse, timer_func); + engine->client_->ScheduleCallback(engine->next_timer_id_, elapse); + return engine->next_timer_id_; +} + +void PDFiumEngine::Form_KillTimer(FPDF_FORMFILLINFO* param, int timer_id) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + engine->timers_.erase(timer_id); +} + +FPDF_SYSTEMTIME PDFiumEngine::Form_GetLocalTime(FPDF_FORMFILLINFO* param) { + base::Time time = base::Time::Now(); + base::Time::Exploded exploded; + time.LocalExplode(&exploded); + + FPDF_SYSTEMTIME rv; + rv.wYear = exploded.year; + rv.wMonth = exploded.month; + rv.wDayOfWeek = exploded.day_of_week; + rv.wDay = exploded.day_of_month; + rv.wHour = exploded.hour; + rv.wMinute = exploded.minute; + rv.wSecond = exploded.second; + rv.wMilliseconds = exploded.millisecond; + return rv; +} + +void PDFiumEngine::Form_OnChange(FPDF_FORMFILLINFO* param) { + // Don't care about. +} + +FPDF_PAGE PDFiumEngine::Form_GetPage(FPDF_FORMFILLINFO* param, + FPDF_DOCUMENT document, + int page_index) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + if (page_index < 0 || page_index >= static_cast<int>(engine->pages_.size())) + return NULL; + return engine->pages_[page_index]->GetPage(); +} + +FPDF_PAGE PDFiumEngine::Form_GetCurrentPage(FPDF_FORMFILLINFO* param, + FPDF_DOCUMENT document) { + // TODO(jam): find out what this is used for. + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + int index = engine->last_page_mouse_down_; + if (index == -1) { + index = engine->GetMostVisiblePage(); + if (index == -1) { + NOTREACHED(); + return NULL; + } + } + + return engine->pages_[index]->GetPage(); +} + +int PDFiumEngine::Form_GetRotation(FPDF_FORMFILLINFO* param, FPDF_PAGE page) { + return 0; +} + +void PDFiumEngine::Form_ExecuteNamedAction(FPDF_FORMFILLINFO* param, + FPDF_BYTESTRING named_action) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + std::string action(named_action); + if (action == "Print") { + engine->client_->Print(); + return; + } + + int index = engine->last_page_mouse_down_; + /* Don't try to calculate the most visible page if we don't have a left click + before this event (this code originally copied Form_GetCurrentPage which of + course needs to do that and which doesn't have recursion). This can end up + causing infinite recursion. See http://crbug.com/240413 for more + information. Either way, it's not necessary for the spec'd list of named + actions. + if (index == -1) + index = engine->GetMostVisiblePage(); + */ + if (index == -1) + return; + + // This is the only list of named actions per the spec (see 12.6.4.11). Adobe + // Reader supports more, like FitWidth, but since they're not part of the spec + // and we haven't got bugs about them, no need to now. + if (action == "NextPage") { + engine->client_->ScrollToPage(index + 1); + } else if (action == "PrevPage") { + engine->client_->ScrollToPage(index - 1); + } else if (action == "FirstPage") { + engine->client_->ScrollToPage(0); + } else if (action == "LastPage") { + engine->client_->ScrollToPage(engine->pages_.size() - 1); + } +} + +void PDFiumEngine::Form_SetTextFieldFocus(FPDF_FORMFILLINFO* param, + FPDF_WIDESTRING value, + FPDF_DWORD valueLen, + FPDF_BOOL is_focus) { + // Do nothing for now. + // TODO(gene): use this signal to trigger OSK. +} + +void PDFiumEngine::Form_DoURIAction(FPDF_FORMFILLINFO* param, + FPDF_BYTESTRING uri) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + engine->client_->NavigateTo(std::string(uri), false); +} + +void PDFiumEngine::Form_DoGoToAction(FPDF_FORMFILLINFO* param, + int page_index, + int zoom_mode, + float* position_array, + int size_of_array) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + engine->client_->ScrollToPage(page_index); +} + +int PDFiumEngine::Form_Alert(IPDF_JSPLATFORM* param, + FPDF_WIDESTRING message, + FPDF_WIDESTRING title, + int type, + int icon) { + // See fpdfformfill.h for these values. + enum AlertType { + ALERT_TYPE_OK = 0, + ALERT_TYPE_OK_CANCEL, + ALERT_TYPE_YES_ON, + ALERT_TYPE_YES_NO_CANCEL + }; + + enum AlertResult { + ALERT_RESULT_OK = 1, + ALERT_RESULT_CANCEL, + ALERT_RESULT_NO, + ALERT_RESULT_YES + }; + + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + std::string message_str = + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(message)); + if (type == ALERT_TYPE_OK) { + engine->client_->Alert(message_str); + return ALERT_RESULT_OK; + } + + bool rv = engine->client_->Confirm(message_str); + if (type == ALERT_TYPE_OK_CANCEL) + return rv ? ALERT_RESULT_OK : ALERT_RESULT_CANCEL; + return rv ? ALERT_RESULT_YES : ALERT_RESULT_NO; +} + +void PDFiumEngine::Form_Beep(IPDF_JSPLATFORM* param, int type) { + // Beeps are annoying, and not possible using javascript, so ignore for now. +} + +int PDFiumEngine::Form_Response(IPDF_JSPLATFORM* param, + FPDF_WIDESTRING question, + FPDF_WIDESTRING title, + FPDF_WIDESTRING default_response, + FPDF_WIDESTRING label, + FPDF_BOOL password, + void* response, + int length) { + std::string question_str = base::UTF16ToUTF8( + reinterpret_cast<const base::char16*>(question)); + std::string default_str = base::UTF16ToUTF8( + reinterpret_cast<const base::char16*>(default_response)); + + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + std::string rv = engine->client_->Prompt(question_str, default_str); + base::string16 rv_16 = base::UTF8ToUTF16(rv); + int rv_bytes = rv_16.size() * sizeof(base::char16); + if (response && rv_bytes <= length) + memcpy(response, rv_16.c_str(), rv_bytes); + return rv_bytes; +} + +int PDFiumEngine::Form_GetFilePath(IPDF_JSPLATFORM* param, + void* file_path, + int length) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + std::string rv = engine->client_->GetURL(); + if (file_path && rv.size() <= static_cast<size_t>(length)) + memcpy(file_path, rv.c_str(), rv.size()); + return rv.size(); +} + +void PDFiumEngine::Form_Mail(IPDF_JSPLATFORM* param, + void* mail_data, + int length, + FPDF_BOOL ui, + FPDF_WIDESTRING to, + FPDF_WIDESTRING subject, + FPDF_WIDESTRING cc, + FPDF_WIDESTRING bcc, + FPDF_WIDESTRING message) { + DCHECK(length == 0); // Don't handle attachments; no way with mailto. + std::string to_str = + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(to)); + std::string cc_str = + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(cc)); + std::string bcc_str = + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(bcc)); + std::string subject_str = + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(subject)); + std::string message_str = + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(message)); + + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + engine->client_->Email(to_str, cc_str, bcc_str, subject_str, message_str); +} + +void PDFiumEngine::Form_Print(IPDF_JSPLATFORM* param, + FPDF_BOOL ui, + int start, + int end, + FPDF_BOOL silent, + FPDF_BOOL shrink_to_fit, + FPDF_BOOL print_as_image, + FPDF_BOOL reverse, + FPDF_BOOL annotations) { + // No way to pass the extra information to the print dialog using JavaScript. + // Just opening it is fine for now. + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + engine->client_->Print(); +} + +void PDFiumEngine::Form_SubmitForm(IPDF_JSPLATFORM* param, + void* form_data, + int length, + FPDF_WIDESTRING url) { + std::string url_str = + base::UTF16ToUTF8(reinterpret_cast<const base::char16*>(url)); + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + engine->client_->SubmitForm(url_str, form_data, length); +} + +void PDFiumEngine::Form_GotoPage(IPDF_JSPLATFORM* param, + int page_number) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + engine->client_->ScrollToPage(page_number); +} + +int PDFiumEngine::Form_Browse(IPDF_JSPLATFORM* param, + void* file_path, + int length) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + std::string path = engine->client_->ShowFileSelectionDialog(); + if (path.size() + 1 <= static_cast<size_t>(length)) + memcpy(file_path, &path[0], path.size() + 1); + return path.size() + 1; +} + +FPDF_BOOL PDFiumEngine::Pause_NeedToPauseNow(IFSDK_PAUSE* param) { + PDFiumEngine* engine = static_cast<PDFiumEngine*>(param); + return (base::Time::Now() - engine->last_progressive_start_time_). + InMilliseconds() > engine->progressive_paint_timeout_; +} + +ScopedUnsupportedFeature::ScopedUnsupportedFeature(PDFiumEngine* engine) + : engine_(engine), old_engine_(g_engine_for_unsupported) { + g_engine_for_unsupported = engine_; +} + +ScopedUnsupportedFeature::~ScopedUnsupportedFeature() { + g_engine_for_unsupported = old_engine_; +} + +PDFEngineExports* PDFEngineExports::Create() { + return new PDFiumEngineExports; +} + +namespace { + +int CalculatePosition(FPDF_PAGE page, + const PDFiumEngineExports::RenderingSettings& settings, + pp::Rect* dest) { + int page_width = static_cast<int>( + FPDF_GetPageWidth(page) * settings.dpi_x / kPointsPerInch); + int page_height = static_cast<int>( + FPDF_GetPageHeight(page) * settings.dpi_y / kPointsPerInch); + + // Start by assuming that we will draw exactly to the bounds rect + // specified. + *dest = settings.bounds; + + int rotate = 0; // normal orientation. + + // Auto-rotate landscape pages to print correctly. + if (settings.autorotate && + (dest->width() > dest->height()) != (page_width > page_height)) { + rotate = 1; // 90 degrees clockwise. + std::swap(page_width, page_height); + } + + // See if we need to scale the output + bool scale_to_bounds = false; + if (settings.fit_to_bounds && + ((page_width > dest->width()) || (page_height > dest->height()))) { + scale_to_bounds = true; + } else if (settings.stretch_to_bounds && + ((page_width < dest->width()) || (page_height < dest->height()))) { + scale_to_bounds = true; + } + + if (scale_to_bounds) { + // If we need to maintain aspect ratio, calculate the actual width and + // height. + if (settings.keep_aspect_ratio) { + double scale_factor_x = page_width; + scale_factor_x /= dest->width(); + double scale_factor_y = page_height; + scale_factor_y /= dest->height(); + if (scale_factor_x > scale_factor_y) { + dest->set_height(page_height / scale_factor_x); + } else { + dest->set_width(page_width / scale_factor_y); + } + } + } else { + // We are not scaling to bounds. Draw in the actual page size. If the + // actual page size is larger than the bounds, the output will be + // clipped. + dest->set_width(page_width); + dest->set_height(page_height); + } + + if (settings.center_in_bounds) { + pp::Point offset((settings.bounds.width() - dest->width()) / 2, + (settings.bounds.height() - dest->height()) / 2); + dest->Offset(offset); + } + return rotate; +} + +} // namespace + +#if defined(OS_WIN) +bool PDFiumEngineExports::RenderPDFPageToDC(const void* pdf_buffer, + int buffer_size, + int page_number, + const RenderingSettings& settings, + HDC dc) { + FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, buffer_size, NULL); + if (!doc) + return false; + FPDF_PAGE page = FPDF_LoadPage(doc, page_number); + if (!page) { + FPDF_CloseDocument(doc); + return false; + } + RenderingSettings new_settings = settings; + // calculate the page size + if (new_settings.dpi_x == -1) + new_settings.dpi_x = GetDeviceCaps(dc, LOGPIXELSX); + if (new_settings.dpi_y == -1) + new_settings.dpi_y = GetDeviceCaps(dc, LOGPIXELSY); + + pp::Rect dest; + int rotate = CalculatePosition(page, new_settings, &dest); + + int save_state = SaveDC(dc); + // The caller wanted all drawing to happen within the bounds specified. + // Based on scale calculations, our destination rect might be larger + // than the bounds. Set the clip rect to the bounds. + IntersectClipRect(dc, settings.bounds.x(), settings.bounds.y(), + settings.bounds.x() + settings.bounds.width(), + settings.bounds.y() + settings.bounds.height()); + + // A temporary hack. PDFs generated by Cairo (used by Chrome OS to generate + // a PDF output from a webpage) result in very large metafiles and the + // rendering using FPDF_RenderPage is incorrect. In this case, render as a + // bitmap. Note that this code does not kick in for PDFs printed from Chrome + // because in that case we create a temp PDF first before printing and this + // temp PDF does not have a creator string that starts with "cairo". + base::string16 creator; + size_t buffer_bytes = FPDF_GetMetaText(doc, "Creator", NULL, 0); + if (buffer_bytes > 1) { + FPDF_GetMetaText(doc, "Creator", WriteInto(&creator, buffer_bytes), + buffer_bytes); + } + bool use_bitmap = false; + if (StartsWith(creator, L"cairo", false)) + use_bitmap = true; + + // Another temporary hack. Some PDFs seems to render very slowly if + // FPDF_RenderPage is directly used on a printer DC. I suspect it is + // because of the code to talk Postscript directly to the printer if + // the printer supports this. Need to discuss this with PDFium. For now, + // render to a bitmap and then blit the bitmap to the DC if we have been + // supplied a printer DC. + int device_type = GetDeviceCaps(dc, TECHNOLOGY); + if (use_bitmap || + (device_type == DT_RASPRINTER) || (device_type == DT_PLOTTER)) { + FPDF_BITMAP bitmap = FPDFBitmap_Create(dest.width(), dest.height(), + FPDFBitmap_BGRx); + // Clear the bitmap + FPDFBitmap_FillRect(bitmap, 0, 0, dest.width(), dest.height(), 255, 255, + 255, 255); + FPDF_RenderPageBitmap( + bitmap, page, 0, 0, dest.width(), dest.height(), rotate, + FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH); + int stride = FPDFBitmap_GetStride(bitmap); + BITMAPINFO bmi; + memset(&bmi, 0, sizeof(bmi)); + bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); + bmi.bmiHeader.biWidth = dest.width(); + bmi.bmiHeader.biHeight = -dest.height(); // top-down image + bmi.bmiHeader.biPlanes = 1; + bmi.bmiHeader.biBitCount = 32; + bmi.bmiHeader.biCompression = BI_RGB; + bmi.bmiHeader.biSizeImage = stride * dest.height(); + StretchDIBits(dc, dest.x(), dest.y(), dest.width(), dest.height(), + 0, 0, dest.width(), dest.height(), + FPDFBitmap_GetBuffer(bitmap), &bmi, DIB_RGB_COLORS, SRCCOPY); + FPDFBitmap_Destroy(bitmap); + } else { + FPDF_RenderPage(dc, page, dest.x(), dest.y(), dest.width(), dest.height(), + rotate, FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH); + } + RestoreDC(dc, save_state); + FPDF_ClosePage(page); + FPDF_CloseDocument(doc); + return true; +} +#endif // OS_WIN + +bool PDFiumEngineExports::RenderPDFPageToBitmap( + const void* pdf_buffer, + int pdf_buffer_size, + int page_number, + const RenderingSettings& settings, + void* bitmap_buffer) { + FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, NULL); + if (!doc) + return false; + FPDF_PAGE page = FPDF_LoadPage(doc, page_number); + if (!page) { + FPDF_CloseDocument(doc); + return false; + } + + pp::Rect dest; + int rotate = CalculatePosition(page, settings, &dest); + + FPDF_BITMAP bitmap = + FPDFBitmap_CreateEx(settings.bounds.width(), settings.bounds.height(), + FPDFBitmap_BGRA, bitmap_buffer, + settings.bounds.width() * 4); + // Clear the bitmap + FPDFBitmap_FillRect(bitmap, 0, 0, settings.bounds.width(), + settings.bounds.height(), 255, 255, 255, 255); + // Shift top-left corner of bounds to (0, 0) if it's not there. + dest.set_point(dest.point() - settings.bounds.point()); + FPDF_RenderPageBitmap( + bitmap, page, dest.x(), dest.y(), dest.width(), dest.height(), rotate, + FPDF_ANNOT | FPDF_PRINTING | FPDF_NO_CATCH); + FPDFBitmap_Destroy(bitmap); + FPDF_ClosePage(page); + FPDF_CloseDocument(doc); + return true; +} + +bool PDFiumEngineExports::GetPDFDocInfo(const void* pdf_buffer, + int buffer_size, + int* page_count, + double* max_page_width) { + FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, buffer_size, NULL); + if (!doc) + return false; + int page_count_local = FPDF_GetPageCount(doc); + if (page_count) { + *page_count = page_count_local; + } + if (max_page_width) { + *max_page_width = 0; + for (int page_number = 0; page_number < page_count_local; page_number++) { + double page_width = 0; + double page_height = 0; + FPDF_GetPageSizeByIndex(doc, page_number, &page_width, &page_height); + if (page_width > *max_page_width) { + *max_page_width = page_width; + } + } + } + FPDF_CloseDocument(doc); + return true; +} + +} // namespace chrome_pdf diff --git a/pdf/pdfium/pdfium_engine.h b/pdf/pdfium/pdfium_engine.h new file mode 100644 index 0000000..4e764b1 --- /dev/null +++ b/pdf/pdfium/pdfium_engine.h @@ -0,0 +1,621 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PDFIUM_PDFIUM_ENGINE_H_ +#define PDF_PDFIUM_PDFIUM_ENGINE_H_ + +#include <map> +#include <string> +#include <utility> +#include <vector> + +#include "base/memory/scoped_ptr.h" +#include "base/time/time.h" +#include "pdf/document_loader.h" +#include "pdf/pdf_engine.h" +#include "pdf/pdfium/pdfium_page.h" +#include "pdf/pdfium/pdfium_range.h" +#include "ppapi/cpp/completion_callback.h" +#include "ppapi/cpp/dev/buffer_dev.h" +#include "ppapi/cpp/image_data.h" +#include "ppapi/cpp/point.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_dataavail.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_progressive.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfformfill.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfview.h" + +namespace pp { +class KeyboardInputEvent; +class MouseInputEvent; +} + +namespace chrome_pdf { + +class ShadowMatrix; + +class PDFiumEngine : public PDFEngine, + public DocumentLoader::Client, + public FPDF_FORMFILLINFO, + public IPDF_JSPLATFORM, + public IFSDK_PAUSE { + public: + explicit PDFiumEngine(PDFEngine::Client* client); + virtual ~PDFiumEngine(); + + // PDFEngine implementation. + virtual bool New(const char* url); + virtual bool New(const char* url, + const char* headers); + virtual void PageOffsetUpdated(const pp::Point& page_offset); + virtual void PluginSizeUpdated(const pp::Size& size); + virtual void ScrolledToXPosition(int position); + virtual void ScrolledToYPosition(int position); + virtual void PrePaint(); + virtual void Paint(const pp::Rect& rect, + pp::ImageData* image_data, + std::vector<pp::Rect>* ready, + std::vector<pp::Rect>* pending); + virtual void PostPaint(); + virtual bool HandleDocumentLoad(const pp::URLLoader& loader); + virtual bool HandleEvent(const pp::InputEvent& event); + virtual uint32_t QuerySupportedPrintOutputFormats(); + virtual void PrintBegin(); + virtual pp::Resource PrintPages( + const PP_PrintPageNumberRange_Dev* page_ranges, + uint32_t page_range_count, + const PP_PrintSettings_Dev& print_settings); + virtual void PrintEnd(); + virtual void StartFind(const char* text, bool case_sensitive); + virtual bool SelectFindResult(bool forward); + virtual void StopFind(); + virtual void ZoomUpdated(double new_zoom_level); + virtual void RotateClockwise(); + virtual void RotateCounterclockwise(); + virtual std::string GetSelectedText(); + virtual std::string GetLinkAtPosition(const pp::Point& point); + virtual bool IsSelecting(); + virtual bool HasPermission(DocumentPermission permission) const; + virtual void SelectAll(); + virtual int GetNumberOfPages(); + virtual int GetNamedDestinationPage(const std::string& destination); + virtual int GetFirstVisiblePage(); + virtual int GetMostVisiblePage(); + virtual pp::Rect GetPageRect(int index); + virtual pp::Rect GetPageContentsRect(int index); + virtual int GetVerticalScrollbarYPosition() { return position_.y(); } + virtual void PaintThumbnail(pp::ImageData* image_data, int index); + virtual void SetGrayscale(bool grayscale); + virtual void OnCallback(int id); + virtual std::string GetPageAsJSON(int index); + virtual bool GetPrintScaling(); + virtual void AppendBlankPages(int num_pages); + virtual void AppendPage(PDFEngine* engine, int index); + virtual pp::Point GetScrollPosition(); + virtual void SetScrollPosition(const pp::Point& position); + virtual bool IsProgressiveLoad(); + + // DocumentLoader::Client implementation. + virtual pp::Instance* GetPluginInstance(); + virtual pp::URLLoader CreateURLLoader(); + virtual void OnPartialDocumentLoaded(); + virtual void OnPendingRequestComplete(); + virtual void OnNewDataAvailable(); + virtual void OnDocumentComplete(); + + void UnsupportedFeature(int type); + + std::string current_find_text() const { return current_find_text_; } + + FPDF_DOCUMENT doc() { return doc_; } + FPDF_FORMHANDLE form() { return form_; } + + private: + // This helper class is used to detect the difference in selection between + // construction and destruction. At destruction, it invalidates all the + // parts that are newly selected, along with all the parts that used to be + // selected but are not anymore. + class SelectionChangeInvalidator { + public: + explicit SelectionChangeInvalidator(PDFiumEngine* engine); + ~SelectionChangeInvalidator(); + private: + // Sets the given container to the all the currently visible selection + // rectangles, in screen coordinates. + void GetVisibleSelectionsScreenRects(std::vector<pp::Rect>* rects); + + PDFiumEngine* engine_; + // Screen rectangles that were selected on construction. + std::vector<pp::Rect> old_selections_; + // The origin at the time this object was constructed. + pp::Point previous_origin_; + }; + + friend class SelectionChangeInvalidator; + + struct FileAvail : public FX_FILEAVAIL { + DocumentLoader* loader; + }; + + struct DownloadHints : public FX_DOWNLOADHINTS { + DocumentLoader* loader; + }; + + // PDFium interface to get block of data. + static int GetBlock(void* param, unsigned long position, + unsigned char* buffer, unsigned long size); + + // PDFium interface to check is block of data is available. + static bool IsDataAvail(FX_FILEAVAIL* param, + size_t offset, size_t size); + + // PDFium interface to request download of the block of data. + static void AddSegment(FX_DOWNLOADHINTS* param, + size_t offset, size_t size); + + // We finished getting the pdf file, so load it. This will complete + // asynchronously (due to password fetching) and may be run multiple times. + void LoadDocument(); + + // Try loading the document. Returns true if the document is successfully + // loaded or is already loaded otherwise it will return false. If + // |with_password| is set to true, the document will be loaded with + // |password|. If the document could not be loaded and needs a password, + // |needs_password| will be set to true. + bool TryLoadingDoc(bool with_password, + const std::string& password, + bool* needs_password); + + // Ask the user for the document password and then continue loading the + // document. + void GetPasswordAndLoad(); + + // Called when the password has been retrieved. + void OnGetPasswordComplete(int32_t result, + const pp::Var& password); + + // Continues loading the document when the password has been retrieved, or if + // there is no password. + void ContinueLoadingDocument(bool has_password, + const std::string& password); + + // Finish loading the document and notify the client that the document has + // been loaded. This should only be run after |doc_| has been loaded and the + // document is fully downloaded. If this has been run once, it will result in + // a no-op. + void FinishLoadingDocument(); + + // Loads information about the pages in the document and calculate the + // document size. + void LoadPageInfo(bool reload); + + // Calculate which pages should be displayed right now. + void CalculateVisiblePages(); + + // Returns true iff the given page index is visible. CalculateVisiblePages + // must have been called first. + bool IsPageVisible(int index) const; + + // Checks if a page is now available, and if so marks it as such and returns + // true. Otherwise, it will return false and will add the index to the given + // array if it's not already there. + bool CheckPageAvailable(int index, std::vector<int>* pending); + + // Helper function to get a given page's size in pixels. This is not part of + // PDFiumPage because we might not have that structure when we need this. + pp::Size GetPageSize(int index); + + void UpdateTickMarks(); + + // Called to continue searching so we don't block the main thread. + void ContinueFind(int32_t result); + + // Inserts a find result into find_results_, which is sorted. + void AddFindResult(const PDFiumRange& result); + + // Search a page using PDFium's methods. Doesn't work with unicode. This + // function is just kept arount in case PDFium code is fixed. + void SearchUsingPDFium(const base::string16& term, + bool case_sensitive, + bool first_search, + int character_to_start_searching_from, + int current_page); + + // Search a page ourself using ICU. + void SearchUsingICU(const base::string16& term, + bool case_sensitive, + bool first_search, + int character_to_start_searching_from, + int current_page); + + // Input event handlers. + bool OnMouseDown(const pp::MouseInputEvent& event); + bool OnMouseUp(const pp::MouseInputEvent& event); + bool OnMouseMove(const pp::MouseInputEvent& event); + bool OnKeyDown(const pp::KeyboardInputEvent& event); + bool OnKeyUp(const pp::KeyboardInputEvent& event); + bool OnChar(const pp::KeyboardInputEvent& event); + + pp::Buffer_Dev PrintPagesAsRasterPDF( + const PP_PrintPageNumberRange_Dev* page_ranges, + uint32_t page_range_count, + const PP_PrintSettings_Dev& print_settings); + pp::Buffer_Dev PrintPagesAsPDF(const PP_PrintPageNumberRange_Dev* page_ranges, + uint32_t page_range_count, + const PP_PrintSettings_Dev& print_settings); + pp::Buffer_Dev GetFlattenedPrintData(const FPDF_DOCUMENT& doc); + void FitContentsToPrintableAreaIfRequired( + const FPDF_DOCUMENT& doc, + const PP_PrintSettings_Dev& print_settings); + void SaveSelectedFormForPrint(); + + // Given a mouse event, returns which page and character location it's closest + // to. + PDFiumPage::Area GetCharIndex(const pp::MouseInputEvent& event, + int* page_index, + int* char_index, + PDFiumPage::LinkTarget* target); + PDFiumPage::Area GetCharIndex(const pp::Point& point, + int* page_index, + int* char_index, + PDFiumPage::LinkTarget* target); + + void OnSingleClick(int page_index, int char_index); + void OnMultipleClick(int click_count, int page_index, int char_index); + + // Starts a progressive paint operation given a rectangle in screen + // coordinates. Returns the index in progressive_rects_. + int StartPaint(int page_index, const pp::Rect& dirty); + + // Continues a paint operation that was started earlier. Returns true if the + // paint is done, or false if it needs to be continued. + bool ContinuePaint(int progressive_index, pp::ImageData* image_data); + + // Called once PDFium is finished rendering a page so that we draw our + // borders, highlighting etc. + void FinishPaint(int progressive_index, pp::ImageData* image_data); + + // Stops any paints that are in progress. + void CancelPaints(); + + // Invalidates all pages. Use this when some global parameter, such as page + // orientation, has changed. + void InvalidateAllPages(); + + // If the page is narrower than the document size, paint the extra space + // with the page background. + void FillPageSides(int progressive_index); + + void PaintPageShadow(int progressive_index, pp::ImageData* image_data); + + // Highlight visible find results and selections. + void DrawSelections(int progressive_index, pp::ImageData* image_data); + + // Paints an page that hasn't finished downloading. + void PaintUnavailablePage(int page_index, + const pp::Rect& dirty, + pp::ImageData* image_data); + + // Given a page index, returns the corresponding index in progressive_rects_, + // or -1 if it doesn't exist. + int GetProgressiveIndex(int page_index) const; + + // Creates a FPDF_BITMAP from a rectangle in screen coordinates. + FPDF_BITMAP CreateBitmap(const pp::Rect& rect, + pp::ImageData* image_data) const; + + // Given a rectangle in screen coordinates, returns the coordinates in the + // units that PDFium rendering functions expect. + void GetPDFiumRect(int page_index, const pp::Rect& rect, int* start_x, + int* start_y, int* size_x, int* size_y) const; + + // Returns the rendering flags to pass to PDFium. + int GetRenderingFlags() const; + + // Returns the currently visible rectangle in document coordinates. + pp::Rect GetVisibleRect() const; + + // Returns a page's rect in screen coordinates, as well as its surrounding + // border areas and bottom separator. + pp::Rect GetPageScreenRect(int page_index) const; + + // Given a rectangle in document coordinates, returns the rectange into screen + // coordinates (i.e. 0,0 is top left corner of plugin area). If it's not + // visible, an empty rectangle is returned. + pp::Rect GetScreenRect(const pp::Rect& rect) const; + + // Highlights the given rectangle. + void Highlight(void* buffer, + int stride, + const pp::Rect& rect, + std::vector<pp::Rect>* highlighted_rects); + + // Helper function to convert a device to page coordinates. If the page is + // not yet loaded, page_x and page_y will be set to 0. + void DeviceToPage(int page_index, + float device_x, + float device_y, + double* page_x, + double* page_y); + + // Helper function to get the index of a given FPDF_PAGE. Returns -1 if not + // found. + int GetVisiblePageIndex(FPDF_PAGE page); + + // Helper function to change the current page, running page open/close + // triggers as necessary. + void SetCurrentPage(int index); + + // Transform |page| contents to fit in the selected printer paper size. + void TransformPDFPageForPrinting(FPDF_PAGE page, + const PP_PrintSettings_Dev& print_settings); + + void DrawPageShadow(const pp::Rect& page_rect, + const pp::Rect& shadow_rect, + const pp::Rect& clip_rect, + pp::ImageData* image_data); + + void GetRegion(const pp::Point& location, + pp::ImageData* image_data, + void** region, + int* stride) const; + + // Called when the selection changes. + void OnSelectionChanged(); + + // FPDF_FORMFILLINFO callbacks. + static void Form_Invalidate(FPDF_FORMFILLINFO* param, + FPDF_PAGE page, + double left, + double top, + double right, + double bottom); + static void Form_OutputSelectedRect(FPDF_FORMFILLINFO* param, + FPDF_PAGE page, + double left, + double top, + double right, + double bottom); + static void Form_SetCursor(FPDF_FORMFILLINFO* param, int cursor_type); + static int Form_SetTimer(FPDF_FORMFILLINFO* param, + int elapse, + TimerCallback timer_func); + static void Form_KillTimer(FPDF_FORMFILLINFO* param, int timer_id); + static FPDF_SYSTEMTIME Form_GetLocalTime(FPDF_FORMFILLINFO* param); + static void Form_OnChange(FPDF_FORMFILLINFO* param); + static FPDF_PAGE Form_GetPage(FPDF_FORMFILLINFO* param, + FPDF_DOCUMENT document, + int page_index); + static FPDF_PAGE Form_GetCurrentPage(FPDF_FORMFILLINFO* param, + FPDF_DOCUMENT document); + static int Form_GetRotation(FPDF_FORMFILLINFO* param, FPDF_PAGE page); + static void Form_ExecuteNamedAction(FPDF_FORMFILLINFO* param, + FPDF_BYTESTRING named_action); + static void Form_SetTextFieldFocus(FPDF_FORMFILLINFO* param, + FPDF_WIDESTRING value, + FPDF_DWORD valueLen, + FPDF_BOOL is_focus); + static void Form_DoURIAction(FPDF_FORMFILLINFO* param, FPDF_BYTESTRING uri); + static void Form_DoGoToAction(FPDF_FORMFILLINFO* param, + int page_index, + int zoom_mode, + float* position_array, + int size_of_array); + + // IPDF_JSPLATFORM callbacks. + static int Form_Alert(IPDF_JSPLATFORM* param, + FPDF_WIDESTRING message, + FPDF_WIDESTRING title, + int type, + int icon); + static void Form_Beep(IPDF_JSPLATFORM* param, int type); + static int Form_Response(IPDF_JSPLATFORM* param, + FPDF_WIDESTRING question, + FPDF_WIDESTRING title, + FPDF_WIDESTRING default_response, + FPDF_WIDESTRING label, + FPDF_BOOL password, + void* response, + int length); + static int Form_GetFilePath(IPDF_JSPLATFORM* param, + void* file_path, + int length); + static void Form_Mail(IPDF_JSPLATFORM* param, + void* mail_data, + int length, + FPDF_BOOL ui, + FPDF_WIDESTRING to, + FPDF_WIDESTRING subject, + FPDF_WIDESTRING cc, + FPDF_WIDESTRING bcc, + FPDF_WIDESTRING message); + static void Form_Print(IPDF_JSPLATFORM* param, + FPDF_BOOL ui, + int start, + int end, + FPDF_BOOL silent, + FPDF_BOOL shrink_to_fit, + FPDF_BOOL print_as_image, + FPDF_BOOL reverse, + FPDF_BOOL annotations); + static void Form_SubmitForm(IPDF_JSPLATFORM* param, + void* form_data, + int length, + FPDF_WIDESTRING url); + static void Form_GotoPage(IPDF_JSPLATFORM* param, int page_number); + static int Form_Browse(IPDF_JSPLATFORM* param, void* file_path, int length); + + // IFSDK_PAUSE callbacks + static FPDF_BOOL Pause_NeedToPauseNow(IFSDK_PAUSE* param); + + PDFEngine::Client* client_; + pp::Size document_size_; // Size of document in pixels. + + // The scroll position in screen coordinates. + pp::Point position_; + // The offset of the page into the viewport. + pp::Point page_offset_; + // The plugin size in screen coordinates. + pp::Size plugin_size_; + double current_zoom_; + unsigned int current_rotation_; + + DocumentLoader doc_loader_; // Main document's loader. + std::string url_; + std::string headers_; + pp::CompletionCallbackFactory<PDFiumEngine> find_factory_; + + pp::CompletionCallbackFactory<PDFiumEngine> password_factory_; + int32_t password_tries_remaining_; + + // The current text used for searching. + std::string current_find_text_; + + // The PDFium wrapper object for the document. + FPDF_DOCUMENT doc_; + + // The PDFium wrapper for form data. Used even if there are no form controls + // on the page. + FPDF_FORMHANDLE form_; + + // The page(s) of the document. Store a vector of pointers so that when the + // vector is resized we don't close the pages that are used in pending + // paints. + std::vector<PDFiumPage*> pages_; + + // The indexes of the pages currently visible. + std::vector<int> visible_pages_; + + // The indexes of the pages pending download. + std::vector<int> pending_pages_; + + // During handling of input events we don't want to unload any pages in + // callbacks to us from PDFium, since the current page can change while PDFium + // code still has a pointer to it. + bool defer_page_unload_; + std::vector<int> deferred_page_unloads_; + + // Used for selection. There could be more than one range if selection spans + // more than one page. + std::vector<PDFiumRange> selection_; + // True if we're in the middle of selection. + bool selecting_; + + // Used for searching. + typedef std::vector<PDFiumRange> FindResults; + FindResults find_results_; + // Which page to search next. + int next_page_to_search_; + // Where to stop searching. + int last_page_to_search_; + int last_character_index_to_search_; // -1 if search until end of page. + // Which result the user has currently selected. + int current_find_index_; + + // Permissions bitfield. + unsigned long permissions_; + + // Interface structure to provide access to document stream. + FPDF_FILEACCESS file_access_; + // Interface structure to check data availability in the document stream. + FileAvail file_availability_; + // Interface structure to request data chunks from the document stream. + DownloadHints download_hints_; + // Pointer to the document availability interface. + FPDF_AVAIL fpdf_availability_; + + pp::Size default_page_size_; + + // Used to manage timers that form fill API needs. The pair holds the timer + // period, in ms, and the callback function. + std::map<int, std::pair<int, TimerCallback> > timers_; + int next_timer_id_; + + // Holds the page index of the last page that the mouse clicked on. + int last_page_mouse_down_; + + // Holds the page index of the first visible page; refreshed by calling + // CalculateVisiblePages() + int first_visible_page_; + + // Holds the page index of the most visible page; refreshed by calling + // CalculateVisiblePages() + int most_visible_page_; + + // Set to true after FORM_DoDocumentJSAction/FORM_DoDocumentOpenAction have + // been called. Only after that can we call FORM_DoPageAAction. + bool called_do_document_action_; + + // Records parts of form fields that need to be highlighted at next paint, in + // screen coordinates. + std::vector<pp::Rect> form_highlights_; + + // Whether to render in grayscale or in color. + bool render_grayscale_; + + // The link currently under the cursor. + std::string link_under_cursor_; + + // Pending progressive paints. + struct ProgressivePaint { + pp::Rect rect; // In screen coordinates. + FPDF_BITMAP bitmap; + int page_index; + // Temporary used to figure out if in a series of Paint() calls whether this + // pending paint was updated or not. + int painted_; + }; + std::vector<ProgressivePaint> progressive_paints_; + + // Keeps track of when we started the last progressive paint, so that in our + // callback we can determine if we need to pause. + base::Time last_progressive_start_time_; + + // The timeout to use for the current progressive paint. + int progressive_paint_timeout_; + + // Shadow matrix for generating the page shadow bitmap. + scoped_ptr<ShadowMatrix> page_shadow_; + + // Set to true if the user is being prompted for their password. Will be set + // to false after the user finishes getting their password. + bool getting_password_; +}; + +// Create a local variable of this when calling PDFium functions which can call +// our global callback when an unsupported feature is reached. +class ScopedUnsupportedFeature { + public: + explicit ScopedUnsupportedFeature(PDFiumEngine* engine); + ~ScopedUnsupportedFeature(); + private: + PDFiumEngine* engine_; + PDFiumEngine* old_engine_; +}; + +class PDFiumEngineExports : public PDFEngineExports { + public: + PDFiumEngineExports() {} +#if defined(OS_WIN) + // See the definition of RenderPDFPageToDC in pdf.cc for details. + virtual bool RenderPDFPageToDC(const void* pdf_buffer, + int buffer_size, + int page_number, + const RenderingSettings& settings, + HDC dc); +#endif // OS_WIN + virtual bool RenderPDFPageToBitmap(const void* pdf_buffer, + int pdf_buffer_size, + int page_number, + const RenderingSettings& settings, + void* bitmap_buffer); + + virtual bool GetPDFDocInfo(const void* pdf_buffer, + int buffer_size, + int* page_count, + double* max_page_width); +}; + +} // namespace chrome_pdf + +#endif // PDF_PDFIUM_PDFIUM_ENGINE_H_ diff --git a/pdf/pdfium/pdfium_mem_buffer_file_read.cc b/pdf/pdfium/pdfium_mem_buffer_file_read.cc new file mode 100644 index 0000000..b2371b4 --- /dev/null +++ b/pdf/pdfium/pdfium_mem_buffer_file_read.cc @@ -0,0 +1,34 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/pdfium/pdfium_mem_buffer_file_read.h" + +#include <string.h> + +namespace chrome_pdf { + +PDFiumMemBufferFileRead::PDFiumMemBufferFileRead(const void* data, + size_t size) { + m_FileLen = size; + m_Param = this; + m_GetBlock = &GetBlock; + data_ = reinterpret_cast<const unsigned char*>(data); +} + +PDFiumMemBufferFileRead::~PDFiumMemBufferFileRead() { +} + +int PDFiumMemBufferFileRead::GetBlock(void* param, + unsigned long position, + unsigned char* buf, + unsigned long size) { + const PDFiumMemBufferFileRead* data = + reinterpret_cast<const PDFiumMemBufferFileRead*>(param); + if (!data || position + size > data->m_FileLen) + return 0; + memcpy(buf, data->data_ + position, size); + return 1; +} + +} // namespace chrome_pdf diff --git a/pdf/pdfium/pdfium_mem_buffer_file_read.h b/pdf/pdfium/pdfium_mem_buffer_file_read.h new file mode 100644 index 0000000..88ec410 --- /dev/null +++ b/pdf/pdfium/pdfium_mem_buffer_file_read.h @@ -0,0 +1,30 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_READ_H_ +#define PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_READ_H_ + +#include <stdlib.h> + +#include "third_party/pdfium/fpdfsdk/include/fpdfview.h" + +namespace chrome_pdf { + +// Implementation of FPDF_FILEACCESS from a memory buffer. +class PDFiumMemBufferFileRead : public FPDF_FILEACCESS { + public: + PDFiumMemBufferFileRead(const void* data, size_t size); + ~PDFiumMemBufferFileRead(); + + private: + static int GetBlock(void* param, + unsigned long position, + unsigned char* buf, + unsigned long size); + const unsigned char* data_; +}; + +} // namespace chrome_pdf + +#endif // PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_READ_H_ diff --git a/pdf/pdfium/pdfium_mem_buffer_file_write.cc b/pdf/pdfium/pdfium_mem_buffer_file_write.cc new file mode 100644 index 0000000..45e564b --- /dev/null +++ b/pdf/pdfium/pdfium_mem_buffer_file_write.cc @@ -0,0 +1,33 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/pdfium/pdfium_mem_buffer_file_write.h" + +namespace chrome_pdf { + +PDFiumMemBufferFileWrite::PDFiumMemBufferFileWrite() { + version = 1; + WriteBlock = &WriteBlockImpl; +} + +PDFiumMemBufferFileWrite::~PDFiumMemBufferFileWrite() { +} + +int PDFiumMemBufferFileWrite::WriteBlockImpl(FPDF_FILEWRITE* this_file_write, + const void* data, + unsigned long size) { + PDFiumMemBufferFileWrite* mem_buffer_file_write = + static_cast<PDFiumMemBufferFileWrite*>(this_file_write); + return mem_buffer_file_write->DoWriteBlock(data, size); +} + +int PDFiumMemBufferFileWrite::DoWriteBlock(const void* data, + unsigned long size) { + buffer_.append(static_cast<const unsigned char*>(data), size); + return 1; +} + + +} // namespace chrome_pdf + diff --git a/pdf/pdfium/pdfium_mem_buffer_file_write.h b/pdf/pdfium/pdfium_mem_buffer_file_write.h new file mode 100644 index 0000000..1795c83 --- /dev/null +++ b/pdf/pdfium/pdfium_mem_buffer_file_write.h @@ -0,0 +1,34 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_WRITE_ +#define PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_WRITE_ + +#include <string> + +#include "third_party/pdfium/fpdfsdk/include/fpdfsave.h" + +namespace chrome_pdf { + +// Implementation of FPDF_FILEWRITE into a memory buffer. +class PDFiumMemBufferFileWrite : public FPDF_FILEWRITE { + public: + PDFiumMemBufferFileWrite(); + ~PDFiumMemBufferFileWrite(); + + const std::basic_string<unsigned char>& buffer() { return buffer_; } + size_t size() { return buffer_.size(); } + + private: + int DoWriteBlock(const void* data, unsigned long size); + static int WriteBlockImpl(FPDF_FILEWRITE* this_file_write, const void* data, + unsigned long size); + + std::basic_string<unsigned char> buffer_; +}; + +} // namespace chrome_pdf + +#endif // PDF_PDFIUM_PDFIUM_MEM_BUFFER_FILE_WRITE_ + diff --git a/pdf/pdfium/pdfium_page.cc b/pdf/pdfium/pdfium_page.cc new file mode 100644 index 0000000..8ddd9f1 --- /dev/null +++ b/pdf/pdfium/pdfium_page.cc @@ -0,0 +1,478 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/pdfium/pdfium_page.h" + +#include <math.h> + +#include "base/logging.h" +#include "base/strings/string_number_conversions.h" +#include "base/strings/string_util.h" +#include "base/strings/utf_string_conversions.h" +#include "base/values.h" +#include "pdf/pdfium/pdfium_engine.h" + +// Used when doing hit detection. +#define kTolerance 20.0 + +// Dictionary Value key names for returning the accessible page content as JSON. +const char kPageWidth[] = "width"; +const char kPageHeight[] = "height"; +const char kPageTextBox[] = "textBox"; +const char kTextBoxLeft[] = "left"; +const char kTextBoxTop[] = "top"; +const char kTextBoxWidth[] = "width"; +const char kTextBoxHeight[] = "height"; +const char kTextBoxFontSize[] = "fontSize"; +const char kTextBoxNodes[] = "textNodes"; +const char kTextNodeType[] = "type"; +const char kTextNodeText[] = "text"; +const char kTextNodeURL[] = "url"; +const char kTextNodeTypeText[] = "text"; +const char kTextNodeTypeURL[] = "url"; +const char kDocLinkURLPrefix[] = "#page"; + +namespace chrome_pdf { + +PDFiumPage::PDFiumPage(PDFiumEngine* engine, + int i, + const pp::Rect& r, + bool available) + : engine_(engine), + page_(NULL), + text_page_(NULL), + index_(i), + rect_(r), + calculated_links_(false), + available_(available) { +} + +PDFiumPage::~PDFiumPage() { + Unload(); +} + +void PDFiumPage::Unload() { + if (text_page_) { + FPDFText_ClosePage(text_page_); + text_page_ = NULL; + } + + if (page_) { + if (engine_->form()) { + FORM_OnBeforeClosePage(page_, engine_->form()); + } + FPDF_ClosePage(page_); + page_ = NULL; + } +} + +FPDF_PAGE PDFiumPage::GetPage() { + ScopedUnsupportedFeature scoped_unsupported_feature(engine_); + if (!available_) + return NULL; + if (!page_) { + page_ = FPDF_LoadPage(engine_->doc(), index_); + if (page_ && engine_->form()) { + FORM_OnAfterLoadPage(page_, engine_->form()); + } + } + return page_; +} + +FPDF_PAGE PDFiumPage::GetPrintPage() { + ScopedUnsupportedFeature scoped_unsupported_feature(engine_); + if (!available_) + return NULL; + if (!page_) + page_ = FPDF_LoadPage(engine_->doc(), index_); + return page_; +} + +void PDFiumPage::ClosePrintPage() { + if (page_) { + FPDF_ClosePage(page_); + page_ = NULL; + } +} + +FPDF_TEXTPAGE PDFiumPage::GetTextPage() { + if (!available_) + return NULL; + if (!text_page_) + text_page_ = FPDFText_LoadPage(GetPage()); + return text_page_; +} + +base::Value* PDFiumPage::GetAccessibleContentAsValue(int rotation) { + base::DictionaryValue* node = new base::DictionaryValue(); + + if (!available_) + return node; + + double width = FPDF_GetPageWidth(GetPage()); + double height = FPDF_GetPageHeight(GetPage()); + + base::ListValue* text = new base::ListValue(); + int box_count = FPDFText_CountRects(GetTextPage(), 0, GetCharCount()); + for (int i = 0; i < box_count; i++) { + double left, top, right, bottom; + FPDFText_GetRect(GetTextPage(), i, &left, &top, &right, &bottom); + text->Append( + GetTextBoxAsValue(height, left, top, right, bottom, rotation)); + } + + node->SetDouble(kPageWidth, width); + node->SetDouble(kPageHeight, height); + node->Set(kPageTextBox, text); // Takes ownership of |text| + + return node; +} + +base::Value* PDFiumPage::GetTextBoxAsValue(double page_height, + double left, double top, + double right, double bottom, + int rotation) { + base::string16 text_utf16; + int char_count = + FPDFText_GetBoundedText(GetTextPage(), left, top, right, bottom, NULL, 0); + if (char_count > 0) { + unsigned short* data = reinterpret_cast<unsigned short*>( + WriteInto(&text_utf16, char_count + 1)); + FPDFText_GetBoundedText(GetTextPage(), + left, top, right, bottom, + data, char_count); + } + std::string text_utf8 = base::UTF16ToUTF8(text_utf16); + + FPDF_LINK link = FPDFLink_GetLinkAtPoint(GetPage(), left, top); + Area area; + std::vector<LinkTarget> targets; + if (link) { + targets.push_back(LinkTarget()); + area = GetLinkTarget(link, &targets[0]); + } else { + pp::Rect rect( + PageToScreen(pp::Point(), 1.0, left, top, right, bottom, rotation)); + GetLinks(rect, &targets); + area = targets.size() == 0 ? TEXT_AREA : WEBLINK_AREA; + } + + int char_index = FPDFText_GetCharIndexAtPos(GetTextPage(), left, top, + kTolerance, kTolerance); + double font_size = FPDFText_GetFontSize(GetTextPage(), char_index); + + base::DictionaryValue* node = new base::DictionaryValue(); + node->SetDouble(kTextBoxLeft, left); + node->SetDouble(kTextBoxTop, page_height - top); + node->SetDouble(kTextBoxWidth, right - left); + node->SetDouble(kTextBoxHeight, top - bottom); + node->SetDouble(kTextBoxFontSize, font_size); + + base::ListValue* text_nodes = new base::ListValue(); + + if (area == DOCLINK_AREA) { + std::string url = kDocLinkURLPrefix + base::IntToString(targets[0].page); + text_nodes->Append(CreateURLNode(text_utf8, url)); + } else if (area == WEBLINK_AREA && link) { + text_nodes->Append(CreateURLNode(text_utf8, targets[0].url)); + } else if (area == WEBLINK_AREA && !link) { + size_t start = 0; + for (size_t i = 0; i < targets.size(); ++i) { + // Remove the extra NULL character at end. + // Otherwise, find() will not return any matches. + if (targets[i].url.size() > 0 && + targets[i].url[targets[i].url.size() - 1] == '\0') { + targets[i].url.resize(targets[i].url.size() - 1); + } + // There should only ever be one NULL character + DCHECK(targets[i].url[targets[i].url.size() - 1] != '\0'); + + // PDFium may change the case of generated links. + std::string lowerCaseURL = StringToLowerASCII(targets[i].url); + std::string lowerCaseText = StringToLowerASCII(text_utf8); + size_t pos = lowerCaseText.find(lowerCaseURL, start); + size_t length = targets[i].url.size(); + if (pos == std::string::npos) { + // Check if the link is a "mailto:" URL + if (lowerCaseURL.compare(0, 7, "mailto:") == 0) { + pos = lowerCaseText.find(lowerCaseURL.substr(7), start); + length -= 7; + } + + if (pos == std::string::npos) { + // No match has been found. This should never happen. + continue; + } + } + + std::string before_text = text_utf8.substr(start, pos - start); + if (before_text.size() > 0) + text_nodes->Append(CreateTextNode(before_text)); + std::string link_text = text_utf8.substr(pos, length); + text_nodes->Append(CreateURLNode(link_text, targets[i].url)); + + start = pos + length; + } + std::string before_text = text_utf8.substr(start); + if (before_text.size() > 0) + text_nodes->Append(CreateTextNode(before_text)); + } else { + text_nodes->Append(CreateTextNode(text_utf8)); + } + + node->Set(kTextBoxNodes, text_nodes); // Takes ownership of |text_nodes|. + return node; +} + +base::Value* PDFiumPage::CreateTextNode(std::string text) { + base::DictionaryValue* node = new base::DictionaryValue(); + node->SetString(kTextNodeType, kTextNodeTypeText); + node->SetString(kTextNodeText, text); + return node; +} + +base::Value* PDFiumPage::CreateURLNode(std::string text, std::string url) { + base::DictionaryValue* node = new base::DictionaryValue(); + node->SetString(kTextNodeType, kTextNodeTypeURL); + node->SetString(kTextNodeText, text); + node->SetString(kTextNodeURL, url); + return node; +} + +PDFiumPage::Area PDFiumPage::GetCharIndex(const pp::Point& point, + int rotation, + int* char_index, + LinkTarget* target) { + if (!available_) + return NONSELECTABLE_AREA; + pp::Point point2 = point - rect_.point(); + double new_x, new_y; + FPDF_DeviceToPage(GetPage(), 0, 0, rect_.width(), rect_.height(), + rotation, point2.x(), point2.y(), &new_x, &new_y); + + int rv = FPDFText_GetCharIndexAtPos( + GetTextPage(), new_x, new_y, kTolerance, kTolerance); + *char_index = rv; + + FPDF_LINK link = FPDFLink_GetLinkAtPoint(GetPage(), new_x, new_y); + if (link) { + // We don't handle all possible link types of the PDF. For example, + // launch actions, cross-document links, etc. + // In that case, GetLinkTarget() will return NONSELECTABLE_AREA + // and we should proceed with area detection. + PDFiumPage::Area area = GetLinkTarget(link, target); + if (area != PDFiumPage::NONSELECTABLE_AREA) + return area; + } + + if (rv < 0) + return NONSELECTABLE_AREA; + + return GetLink(*char_index, target) != -1 ? WEBLINK_AREA : TEXT_AREA; +} + +base::char16 PDFiumPage::GetCharAtIndex(int index) { + if (!available_) + return L'\0'; + return static_cast<base::char16>(FPDFText_GetUnicode(GetTextPage(), index)); +} + +int PDFiumPage::GetCharCount() { + if (!available_) + return 0; + return FPDFText_CountChars(GetTextPage()); +} + +PDFiumPage::Area PDFiumPage::GetLinkTarget( + FPDF_LINK link, PDFiumPage::LinkTarget* target) { + FPDF_DEST dest = FPDFLink_GetDest(engine_->doc(), link); + if (dest != NULL) + return GetDestinationTarget(dest, target); + + FPDF_ACTION action = FPDFLink_GetAction(link); + if (action) { + switch (FPDFAction_GetType(action)) { + case PDFACTION_GOTO: { + FPDF_DEST dest = FPDFAction_GetDest(engine_->doc(), action); + if (dest) + return GetDestinationTarget(dest, target); + // TODO(gene): We don't fully support all types of the in-document + // links. Need to implement that. There is a bug to track that: + // http://code.google.com/p/chromium/issues/detail?id=55776 + } break; + case PDFACTION_URI: { + if (target) { + size_t buffer_size = + FPDFAction_GetURIPath(engine_->doc(), action, NULL, 0); + if (buffer_size > 1) { + void* data = WriteInto(&target->url, buffer_size); + FPDFAction_GetURIPath(engine_->doc(), action, data, buffer_size); + } + } + return WEBLINK_AREA; + } break; + // TODO(gene): We don't support PDFACTION_REMOTEGOTO and PDFACTION_LAUNCH + // at the moment. + } + } + + return NONSELECTABLE_AREA; +} + +PDFiumPage::Area PDFiumPage::GetDestinationTarget( + FPDF_DEST destination, PDFiumPage::LinkTarget* target) { + int page_index = FPDFDest_GetPageIndex(engine_->doc(), destination); + if (target) { + target->page = page_index; + } + return DOCLINK_AREA; +} + +int PDFiumPage::GetLink(int char_index, PDFiumPage::LinkTarget* target) { + if (!available_) + return -1; + + CalculateLinks(); + + // Get the bounding box of the rect again, since it might have moved because + // of the tolerance above. + double left, right, bottom, top; + FPDFText_GetCharBox(GetTextPage(), char_index, &left, &right, &bottom, &top); + + pp::Point origin( + PageToScreen(pp::Point(), 1.0, left, top, right, bottom, 0).point()); + for (size_t i = 0; i < links_.size(); ++i) { + for (size_t j = 0; j < links_[i].rects.size(); ++j) { + if (links_[i].rects[j].Contains(origin)) { + if (target) + target->url = links_[i].url; + return i; + } + } + } + return -1; +} + +std::vector<int> PDFiumPage::GetLinks(pp::Rect text_area, + std::vector<LinkTarget>* targets) { + if (!available_) + return std::vector<int>(); + + CalculateLinks(); + + std::vector<int> links; + + for (size_t i = 0; i < links_.size(); ++i) { + for (size_t j = 0; j < links_[i].rects.size(); ++j) { + if (links_[i].rects[j].Intersects(text_area)) { + if (targets) { + LinkTarget target; + target.url = links_[i].url; + targets->push_back(target); + } + links.push_back(i); + } + } + } + return links; +} + +void PDFiumPage::CalculateLinks() { + if (calculated_links_) + return; + + calculated_links_ = true; + FPDF_PAGELINK links = FPDFLink_LoadWebLinks(GetTextPage()); + int count = FPDFLink_CountWebLinks(links); + for (int i = 0; i < count; ++i) { + base::string16 url; + int url_length = FPDFLink_GetURL(links, i, NULL, 0); + if (url_length > 0) { + unsigned short* data = + reinterpret_cast<unsigned short*>(WriteInto(&url, url_length + 1)); + FPDFLink_GetURL(links, i, data, url_length); + } + Link link; + link.url = base::UTF16ToUTF8(url); + + // If the link cannot be converted to a pp::Var, then it is not possible to + // pass it to JS. In this case, ignore the link like other PDF viewers. + // See http://crbug.com/312882 for an example. + pp::Var link_var(link.url); + if (!link_var.is_string()) + continue; + + // Make sure all the characters in the URL are valid per RFC 1738. + // http://crbug.com/340326 has a sample bad PDF. + // GURL does not work correctly, e.g. it just strips \t \r \n. + bool is_invalid_url = false; + for (size_t j = 0; j < link.url.length(); ++j) { + // Control characters are not allowed. + // 0x7F is also a control character. + // 0x80 and above are not in US-ASCII. + if (link.url[j] < ' ' || link.url[j] >= '\x7F') { + is_invalid_url = true; + break; + } + } + if (is_invalid_url) + continue; + + int rect_count = FPDFLink_CountRects(links, i); + for (int j = 0; j < rect_count; ++j) { + double left, top, right, bottom; + FPDFLink_GetRect(links, i, j, &left, &top, &right, &bottom); + link.rects.push_back( + PageToScreen(pp::Point(), 1.0, left, top, right, bottom, 0)); + } + links_.push_back(link); + } + FPDFLink_CloseWebLinks(links); +} + +pp::Rect PDFiumPage::PageToScreen(const pp::Point& offset, + double zoom, + double left, + double top, + double right, + double bottom, + int rotation) { + if (!available_) + return pp::Rect(); + + int new_left, new_top, new_right, new_bottom; + FPDF_PageToDevice( + page_, + static_cast<int>((rect_.x() - offset.x()) * zoom), + static_cast<int>((rect_.y() - offset.y()) * zoom), + static_cast<int>(ceil(rect_.width() * zoom)), + static_cast<int>(ceil(rect_.height() * zoom)), + rotation, left, top, &new_left, &new_top); + FPDF_PageToDevice( + page_, + static_cast<int>((rect_.x() - offset.x()) * zoom), + static_cast<int>((rect_.y() - offset.y()) * zoom), + static_cast<int>(ceil(rect_.width() * zoom)), + static_cast<int>(ceil(rect_.height() * zoom)), + rotation, right, bottom, &new_right, &new_bottom); + + // If the PDF is rotated, the horizontal/vertical coordinates could be + // flipped. See + // http://www.netl.doe.gov/publications/proceedings/03/ubc/presentations/Goeckner-pres.pdf + if (new_right < new_left) + std::swap(new_right, new_left); + if (new_bottom < new_top) + std::swap(new_bottom, new_top); + + return pp::Rect( + new_left, new_top, new_right - new_left + 1, new_bottom - new_top + 1); +} + +PDFiumPage::Link::Link() { +} + +PDFiumPage::Link::~Link() { +} + +} // namespace chrome_pdf diff --git a/pdf/pdfium/pdfium_page.h b/pdf/pdfium/pdfium_page.h new file mode 100644 index 0000000..22ea142 --- /dev/null +++ b/pdf/pdfium/pdfium_page.h @@ -0,0 +1,136 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PDFIUM_PDFIUM_PAGE_H_ +#define PDF_PDFIUM_PDFIUM_PAGE_H_ + +#include <string> +#include <vector> + +#include "base/strings/string16.h" +#include "ppapi/cpp/rect.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfdoc.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfformfill.h" +#include "third_party/pdfium/fpdfsdk/include/fpdftext.h" + +namespace base { +class Value; +} + +namespace chrome_pdf { + +class PDFiumEngine; + +// Wrapper around a page from the document. +class PDFiumPage { + public: + PDFiumPage(PDFiumEngine* engine, + int i, + const pp::Rect& r, + bool available); + ~PDFiumPage(); + // Unloads the PDFium data for this page from memory. + void Unload(); + // Gets the FPDF_PAGE for this page, loading and parsing it if necessary. + FPDF_PAGE GetPage(); + //Get the FPDF_PAGE for printing. + FPDF_PAGE GetPrintPage(); + //Close the printing page. + void ClosePrintPage(); + + // Returns FPDF_TEXTPAGE for the page, loading and parsing it if necessary. + FPDF_TEXTPAGE GetTextPage(); + + // Returns a DictionaryValue version of the page. + base::Value* GetAccessibleContentAsValue(int rotation); + + enum Area { + NONSELECTABLE_AREA, + TEXT_AREA, + WEBLINK_AREA, // Area is a hyperlink. + DOCLINK_AREA, // Area is a link to a different part of the same document. + }; + + struct LinkTarget { + // We are using std::string here which have a copy contructor. + // That prevents us from using union here. + std::string url; // Valid for WEBLINK_AREA only. + int page; // Valid for DOCLINK_AREA only. + }; + + // Given a point in the document that's in this page, returns its character + // index if it's near a character, and also the type of text. + // Target is optional. It will be filled in for WEBLINK_AREA or + // DOCLINK_AREA only. + Area GetCharIndex(const pp::Point& point, int rotation, int* char_index, + LinkTarget* target); + + // Gets the character at the given index. + base::char16 GetCharAtIndex(int index); + + // Gets the number of characters in the page. + int GetCharCount(); + + // Converts from page coordinates to screen coordinates. + pp::Rect PageToScreen(const pp::Point& offset, + double zoom, + double left, + double top, + double right, + double bottom, + int rotation); + + int index() const { return index_; } + pp::Rect rect() const { return rect_; } + void set_rect(const pp::Rect& r) { rect_ = r; } + bool available() const { return available_; } + void set_available(bool available) { available_ = available; } + void set_calculated_links(bool calculated_links) { + calculated_links_ = calculated_links; + } + + private: + // Returns a link index if the given character index is over a link, or -1 + // otherwise. + int GetLink(int char_index, LinkTarget* target); + // Returns the link indices if the given rect intersects a link rect, or an + // empty vector otherwise. + std::vector<int> GetLinks(pp::Rect text_area, + std::vector<LinkTarget>* targets); + // Calculate the locations of any links on the page. + void CalculateLinks(); + // Returns link type and target associated with a link. Returns + // NONSELECTABLE_AREA if link detection failed. + Area GetLinkTarget(FPDF_LINK link, LinkTarget* target); + // Returns target associated with a destination. + Area GetDestinationTarget(FPDF_DEST destination, LinkTarget* target); + // Returns the text in the supplied box as a Value Node + base::Value* GetTextBoxAsValue(double page_height, double left, double top, + double right, double bottom, int rotation); + // Helper functions for JSON generation + base::Value* CreateTextNode(std::string text); + base::Value* CreateURLNode(std::string text, std::string url); + + struct Link { + Link(); + ~Link(); + + std::string url; + // Bounding rectangles of characters. + std::vector<pp::Rect> rects; + }; + + PDFiumEngine* engine_; + FPDF_PAGE page_; + FPDF_TEXTPAGE text_page_; + int index_; + pp::Rect rect_; + bool calculated_links_; + std::vector<Link> links_; + bool available_; +}; + +} // namespace chrome_pdf + +#endif // PDF_PDFIUM_PDFIUM_PAGE_H_ diff --git a/pdf/pdfium/pdfium_range.cc b/pdf/pdfium/pdfium_range.cc new file mode 100644 index 0000000..c77d590 --- /dev/null +++ b/pdf/pdfium/pdfium_range.cc @@ -0,0 +1,79 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/pdfium/pdfium_range.h" + +#include "base/logging.h" +#include "base/strings/string_util.h" + +namespace chrome_pdf { + +PDFiumRange::PDFiumRange(PDFiumPage* page, int char_index, int char_count) + : page_(page), + char_index_(char_index), + char_count_(char_count), + cached_screen_rects_zoom_(0) { +} + +PDFiumRange::~PDFiumRange() { +} + +void PDFiumRange::SetCharCount(int char_count) { + char_count_ = char_count; + + cached_screen_rects_offset_ = pp::Point(); + cached_screen_rects_zoom_ = 0; +} + +std::vector<pp::Rect> PDFiumRange::GetScreenRects(const pp::Point& offset, + double zoom, + int rotation) { + if (offset == cached_screen_rects_offset_ && + zoom == cached_screen_rects_zoom_) { + return cached_screen_rects_; + } + + cached_screen_rects_.clear(); + cached_screen_rects_offset_ = offset; + cached_screen_rects_zoom_ = zoom; + + int char_index = char_index_; + int char_count = char_count_; + if (char_count < 0) { + char_count *= -1; + char_index -= char_count - 1; + } + + int count = FPDFText_CountRects(page_->GetTextPage(), char_index, char_count); + for (int i = 0; i < count; ++i) { + double left, top, right, bottom; + FPDFText_GetRect(page_->GetTextPage(), i, &left, &top, &right, &bottom); + cached_screen_rects_.push_back( + page_->PageToScreen(offset, zoom, left, top, right, bottom, rotation)); + } + + return cached_screen_rects_; +} + +base::string16 PDFiumRange::GetText() { + int index = char_index_; + int count = char_count_; + if (!count) + return base::string16(); + if (count < 0) { + count *= -1; + index -= count - 1; + } + + base::string16 rv; + unsigned short* data = + reinterpret_cast<unsigned short*>(WriteInto(&rv, count + 1)); + if (data) { + int written = FPDFText_GetText(page_->GetTextPage(), index, count, data); + rv.reserve(written); + } + return rv; +} + +} // namespace chrome_pdf diff --git a/pdf/pdfium/pdfium_range.h b/pdf/pdfium/pdfium_range.h new file mode 100644 index 0000000..ed8daf6 --- /dev/null +++ b/pdf/pdfium/pdfium_range.h @@ -0,0 +1,54 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PDFIUM_PDFIUM_RANGE_H_ +#define PDF_PDFIUM_PDFIUM_RANGE_H_ + +#include <string> +#include <vector> + +#include "base/strings/string16.h" +#include "pdf/pdfium/pdfium_page.h" +#include "ppapi/cpp/rect.h" + +namespace chrome_pdf { + +// Describes location of a string of characters. +class PDFiumRange { + public: + PDFiumRange(PDFiumPage* page, int char_index, int char_count); + ~PDFiumRange(); + + // Update how many characters are in the selection. Could be negative if + // backwards. + void SetCharCount(int char_count); + + int page_index() const { return page_->index(); } + int char_index() const { return char_index_; } + int char_count() const { return char_count_; } + + // Gets bounding rectangles of range in screen coordinates. + std::vector<pp::Rect> GetScreenRects(const pp::Point& offset, + double zoom, + int rotation); + + // Gets the string of characters in this range. + base::string16 GetText(); + + private: + PDFiumPage* page_; + // Index of first character. + int char_index_; + // How many characters are part of this range (negative if backwards). + int char_count_; + + // Cache of ScreenRect, and the associated variables used when caching it. + std::vector<pp::Rect> cached_screen_rects_; + pp::Point cached_screen_rects_offset_; + double cached_screen_rects_zoom_; +}; + +} // namespace chrome_pdf + +#endif // PDF_PDFIUM_PDFIUM_RANGE_H_ diff --git a/pdf/pdfium/pdfium_test.cc b/pdf/pdfium/pdfium_test.cc new file mode 100644 index 0000000..6871234 --- /dev/null +++ b/pdf/pdfium/pdfium_test.cc @@ -0,0 +1,312 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include <limits.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <list> +#include <string> +#include <utility> + +#include "base/at_exit.h" +#include "base/i18n/icu_util.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_dataavail.h" +#include "third_party/pdfium/fpdfsdk/include/fpdf_ext.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfformfill.h" +#include "third_party/pdfium/fpdfsdk/include/fpdftext.h" +#include "third_party/pdfium/fpdfsdk/include/fpdfview.h" + +#ifdef _WIN32 + #define snprintf _snprintf + /* in Windows, rb for open and read binary file */ + #define FOPEN_READ "rb" +#else + #define FOPEN_READ "r" +#endif + +static void write_file(const char* pdf_name, int num, + const char* buffer, int stride, int width, int height) { + if (stride < 0 || width < 0 || height < 0) + return; + if (height > 0 && width > INT_MAX / height) + return; + int out_len = width * height; + if (out_len > INT_MAX / 3) + return; + out_len *= 3; + + char filename[256]; + snprintf(filename, sizeof(filename), "%s.%d.ppm", pdf_name, num); + FILE* fp = fopen(filename, "w"); + if (!fp) + return; + fprintf(fp, "P6\n# PDF test render\n%d %d\n255\n", width, height); + // Source data is B, G, R, unused. + // Dest data is R, G, B. + char* result = new char[out_len]; + if (result) { + int h, w; + for (h = 0; h < height; ++h) { + const char* src_line = buffer + (stride * h); + char* dest_line = result + (width * h * 3); + for (w = 0; w < width; ++w) { + // R + dest_line[w * 3] = src_line[(w * 4) + 2]; + // G + dest_line[(w * 3) + 1] = src_line[(w * 4) + 1]; + // B + dest_line[(w * 3) + 2] = src_line[w * 4]; + } + } + fwrite(result, out_len, 1, fp); + delete [] result; + } + fclose(fp); +} + +int Form_Alert(IPDF_JSPLATFORM*, FPDF_WIDESTRING, FPDF_WIDESTRING, int, int) { + printf("Form_Alert called.\n"); + return 0; +} + +void Unsupported_Handler(UNSUPPORT_INFO*, int type) { + std::string feature = "Unknown"; + switch (type) { + case FPDF_UNSP_DOC_XFAFORM: + feature = "XFA"; + break; + case FPDF_UNSP_DOC_PORTABLECOLLECTION: + feature = "Portfolios_Packages"; + break; + case FPDF_UNSP_DOC_ATTACHMENT: + case FPDF_UNSP_ANNOT_ATTACHMENT: + feature = "Attachment"; + break; + case FPDF_UNSP_DOC_SECURITY: + feature = "Rights_Management"; + break; + case FPDF_UNSP_DOC_SHAREDREVIEW: + feature = "Shared_Review"; + break; + case FPDF_UNSP_DOC_SHAREDFORM_ACROBAT: + case FPDF_UNSP_DOC_SHAREDFORM_FILESYSTEM: + case FPDF_UNSP_DOC_SHAREDFORM_EMAIL: + feature = "Shared_Form"; + break; + case FPDF_UNSP_ANNOT_3DANNOT: + feature = "3D"; + break; + case FPDF_UNSP_ANNOT_MOVIE: + feature = "Movie"; + break; + case FPDF_UNSP_ANNOT_SOUND: + feature = "Sound"; + break; + case FPDF_UNSP_ANNOT_SCREEN_MEDIA: + case FPDF_UNSP_ANNOT_SCREEN_RICHMEDIA: + feature = "Screen"; + break; + case FPDF_UNSP_ANNOT_SIG: + feature = "Digital_Signature"; + break; + } + printf("Unsupported feature: %s.\n", feature.c_str()); +} + +bool ParseCommandLine(int argc, const char* argv[], bool* write_images, + std::list<const char*>* files) { + *write_images = false; + files->clear(); + + int cur_arg = 1; + if (cur_arg < argc && + strcmp(argv[cur_arg], "--write_images") == 0) { + *write_images = true; + cur_arg++; + } + + if (cur_arg >= argc) + return false; + + for (int i = cur_arg; i < argc; i++) + files->push_back(argv[i]); + + return true; +} + +class TestLoader { + public: + TestLoader(const char* pBuf, size_t len); + + const char* m_pBuf; + size_t m_Len; +}; + +TestLoader::TestLoader(const char* pBuf, size_t len) + : m_pBuf(pBuf), m_Len(len) { +} + +int Get_Block(void* param, unsigned long pos, unsigned char* pBuf, + unsigned long size) { + TestLoader* pLoader = (TestLoader*) param; + if (pos + size < pos || pos + size > pLoader->m_Len) return 0; + memcpy(pBuf, pLoader->m_pBuf + pos, size); + return 1; +} + +bool Is_Data_Avail(FX_FILEAVAIL* pThis, size_t offset, size_t size) { + return true; +} + +void Add_Segment(FX_DOWNLOADHINTS* pThis, size_t offset, size_t size) { +} + +void RenderPdf(const char* name, const char* pBuf, size_t len, + bool write_images) { + printf("Rendering PDF file %s.\n", name); + + IPDF_JSPLATFORM platform_callbacks; + memset(&platform_callbacks, '\0', sizeof(platform_callbacks)); + platform_callbacks.version = 1; + platform_callbacks.app_alert = Form_Alert; + + FPDF_FORMFILLINFO form_callbacks; + memset(&form_callbacks, '\0', sizeof(form_callbacks)); + form_callbacks.version = 1; + form_callbacks.m_pJsPlatform = &platform_callbacks; + + TestLoader loader(pBuf, len); + + FPDF_FILEACCESS file_access; + memset(&file_access, '\0', sizeof(file_access)); + file_access.m_FileLen = len; + file_access.m_GetBlock = Get_Block; + file_access.m_Param = &loader; + + FX_FILEAVAIL file_avail; + memset(&file_avail, '\0', sizeof(file_avail)); + file_avail.version = 1; + file_avail.IsDataAvail = Is_Data_Avail; + + FX_DOWNLOADHINTS hints; + memset(&hints, '\0', sizeof(hints)); + hints.version = 1; + hints.AddSegment = Add_Segment; + + FPDF_DOCUMENT doc; + FPDF_AVAIL pdf_avail = FPDFAvail_Create(&file_avail, &file_access); + + (void) FPDFAvail_IsDocAvail(pdf_avail, &hints); + + if (!FPDFAvail_IsLinearized(pdf_avail)) { + printf("Non-linearized path...\n"); + doc = FPDF_LoadCustomDocument(&file_access, NULL); + } else { + printf("Linearized path...\n"); + doc = FPDFAvail_GetDocument(pdf_avail, NULL); + } + + (void) FPDF_GetDocPermissions(doc); + (void) FPDFAvail_IsFormAvail(pdf_avail, &hints); + + FPDF_FORMHANDLE form = FPDFDOC_InitFormFillEnviroument(doc, &form_callbacks); + FPDF_SetFormFieldHighlightColor(form, 0, 0xFFE4DD); + FPDF_SetFormFieldHighlightAlpha(form, 100); + + int first_page = FPDFAvail_GetFirstPageNum(doc); + (void) FPDFAvail_IsPageAvail(pdf_avail, first_page, &hints); + + int page_count = FPDF_GetPageCount(doc); + for (int i = 0; i < page_count; ++i) { + (void) FPDFAvail_IsPageAvail(pdf_avail, i, &hints); + } + + FORM_DoDocumentJSAction(form); + FORM_DoDocumentOpenAction(form); + + for (int i = 0; i < page_count; ++i) { + FPDF_PAGE page = FPDF_LoadPage(doc, i); + FPDF_TEXTPAGE text_page = FPDFText_LoadPage(page); + FORM_OnAfterLoadPage(page, form); + FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_OPEN); + + int width = static_cast<int>(FPDF_GetPageWidth(page)); + int height = static_cast<int>(FPDF_GetPageHeight(page)); + FPDF_BITMAP bitmap = FPDFBitmap_Create(width, height, 0); + FPDFBitmap_FillRect(bitmap, 0, 0, width, height, 255, 255, 255, 255); + + FPDF_RenderPageBitmap(bitmap, page, 0, 0, width, height, 0, 0); + FPDF_FFLDraw(form, bitmap, page, 0, 0, width, height, 0, 0); + if (write_images) { + const char* buffer = reinterpret_cast<const char*>( + FPDFBitmap_GetBuffer(bitmap)); + int stride = FPDFBitmap_GetStride(bitmap); + write_file(name, i, buffer, stride, width, height); + } + + FPDFBitmap_Destroy(bitmap); + + FORM_DoPageAAction(page, form, FPDFPAGE_AACTION_CLOSE); + FORM_OnBeforeClosePage(page, form); + FPDFText_ClosePage(text_page); + FPDF_ClosePage(page); + } + + FORM_DoDocumentAAction(form, FPDFDOC_AACTION_WC); + FPDFDOC_ExitFormFillEnviroument(form); + FPDF_CloseDocument(doc); + FPDFAvail_Destroy(pdf_avail); + + printf("Loaded, parsed and rendered %d pages.\n", page_count); +} + +int main(int argc, const char* argv[]) { + base::AtExitManager exit_manager; + base::i18n::InitializeICU(); + bool write_images = false; + std::list<const char*> files; + if (!ParseCommandLine(argc, argv, &write_images, &files)) { + printf("Usage is: test [--write_images] /path/to/pdf\n"); + printf("--write_images - to write page images <pdf-name>.<page-number>.ppm\n"); + return 1; + } + + FPDF_InitLibrary(NULL); + + UNSUPPORT_INFO unsuppored_info; + memset(&unsuppored_info, '\0', sizeof(unsuppored_info)); + unsuppored_info.version = 1; + unsuppored_info.FSDK_UnSupport_Handler = Unsupported_Handler; + + FSDK_SetUnSpObjProcessHandler(&unsuppored_info); + + while (!files.empty()) { + const char* filename = files.front(); + files.pop_front(); + FILE* file = fopen(filename, FOPEN_READ); + if (!file) { + fprintf(stderr, "Failed to open: %s\n", filename); + continue; + } + (void) fseek(file, 0, SEEK_END); + size_t len = ftell(file); + (void) fseek(file, 0, SEEK_SET); + char* pBuf = (char*) malloc(len); + size_t ret = fread(pBuf, 1, len, file); + (void) fclose(file); + if (ret != len) { + fprintf(stderr, "Failed to read: %s\n", filename); + } else { + RenderPdf(filename, pBuf, len, write_images); + } + free(pBuf); + } + + FPDF_DestroyLibrary(); + + return 0; +} + diff --git a/pdf/preview_mode_client.cc b/pdf/preview_mode_client.cc new file mode 100644 index 0000000..8b9919b --- /dev/null +++ b/pdf/preview_mode_client.cc @@ -0,0 +1,162 @@ +// Copyright (c) 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/preview_mode_client.h" + +#include "base/logging.h" +#include "pdf/instance.h" + +namespace chrome_pdf { + +PreviewModeClient::PreviewModeClient(Client* client) + : client_(client) { +} + +void PreviewModeClient::DocumentSizeUpdated(const pp::Size& size) { +} + +void PreviewModeClient::Invalidate(const pp::Rect& rect) { + NOTREACHED(); +} + +void PreviewModeClient::Scroll(const pp::Point& point) { + NOTREACHED(); +} + +void PreviewModeClient::ScrollToX(int position) { + NOTREACHED(); +} + +void PreviewModeClient::ScrollToY(int position) { + NOTREACHED(); +} + +void PreviewModeClient::ScrollToPage(int page) { + NOTREACHED(); +} + +void PreviewModeClient::NavigateTo(const std::string& url, + bool open_in_new_tab) { + NOTREACHED(); +} + +void PreviewModeClient::UpdateCursor(PP_CursorType_Dev cursor) { + NOTREACHED(); +} + +void PreviewModeClient::UpdateTickMarks( + const std::vector<pp::Rect>& tickmarks) { + NOTREACHED(); +} + +void PreviewModeClient::NotifyNumberOfFindResultsChanged(int total, + bool final_result) { + NOTREACHED(); +} + +void PreviewModeClient::NotifySelectedFindResultChanged( + int current_find_index) { + NOTREACHED(); +} + +void PreviewModeClient::GetDocumentPassword( + pp::CompletionCallbackWithOutput<pp::Var> callback) { + callback.Run(PP_ERROR_FAILED); +} + +void PreviewModeClient::Alert(const std::string& message) { + NOTREACHED(); +} + +bool PreviewModeClient::Confirm(const std::string& message) { + NOTREACHED(); + return false; +} + +std::string PreviewModeClient::Prompt(const std::string& question, + const std::string& default_answer) { + NOTREACHED(); + return std::string(); +} + +std::string PreviewModeClient::GetURL() { + NOTREACHED(); + return std::string(); +} + +void PreviewModeClient::Email(const std::string& to, + const std::string& cc, + const std::string& bcc, + const std::string& subject, + const std::string& body) { + NOTREACHED(); +} + +void PreviewModeClient::Print() { + NOTREACHED(); +} + +void PreviewModeClient::SubmitForm(const std::string& url, + const void* data, + int length) { + NOTREACHED(); +} + +std::string PreviewModeClient::ShowFileSelectionDialog() { + NOTREACHED(); + return std::string(); +} + +pp::URLLoader PreviewModeClient::CreateURLLoader() { + NOTREACHED(); + return pp::URLLoader(); +} + +void PreviewModeClient::ScheduleCallback(int id, int delay_in_ms) { + NOTREACHED(); +} + +void PreviewModeClient::SearchString(const base::char16* string, + const base::char16* term, + bool case_sensitive, + std::vector<SearchStringResult>* results) { + NOTREACHED(); +} + +void PreviewModeClient::DocumentPaintOccurred() { + NOTREACHED(); +} + +void PreviewModeClient::DocumentLoadComplete(int page_count) { + client_->PreviewDocumentLoadComplete(); +} + +void PreviewModeClient::DocumentLoadFailed() { + client_->PreviewDocumentLoadFailed(); +} + +pp::Instance* PreviewModeClient::GetPluginInstance() { + NOTREACHED(); + return NULL; +} + +void PreviewModeClient::DocumentHasUnsupportedFeature( + const std::string& feature) { + NOTREACHED(); +} + +void PreviewModeClient::DocumentLoadProgress(uint32 available, + uint32 doc_size) { +} + +void PreviewModeClient::FormTextFieldFocusChange(bool in_focus) { + NOTREACHED(); +} + +bool PreviewModeClient::IsPrintPreview() { + NOTREACHED(); + return false; +} + +} // namespace chrome_pdf diff --git a/pdf/preview_mode_client.h b/pdf/preview_mode_client.h new file mode 100644 index 0000000..0e766f9 --- /dev/null +++ b/pdf/preview_mode_client.h @@ -0,0 +1,77 @@ +// Copyright (c) 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PREVIEW_MODE_CLIENT_H_ +#define PDF_PREVIEW_MODE_CLIENT_H_ + +#include <string> +#include <vector> + +#include "pdf/pdf_engine.h" + +namespace chrome_pdf { + +// The interface that's provided to the print preview rendering engine. +class PreviewModeClient : public PDFEngine::Client { + public: + class Client { + public: + virtual void PreviewDocumentLoadFailed() = 0; + virtual void PreviewDocumentLoadComplete() = 0; + }; + explicit PreviewModeClient(Client* client); + virtual ~PreviewModeClient() {} + + // PDFEngine::Client implementation. + virtual void DocumentSizeUpdated(const pp::Size& size); + virtual void Invalidate(const pp::Rect& rect); + virtual void Scroll(const pp::Point& point); + virtual void ScrollToX(int position); + virtual void ScrollToY(int position); + virtual void ScrollToPage(int page); + virtual void NavigateTo(const std::string& url, bool open_in_new_tab); + virtual void UpdateCursor(PP_CursorType_Dev cursor); + virtual void UpdateTickMarks(const std::vector<pp::Rect>& tickmarks); + virtual void NotifyNumberOfFindResultsChanged(int total, + bool final_result); + virtual void NotifySelectedFindResultChanged(int current_find_index); + virtual void GetDocumentPassword( + pp::CompletionCallbackWithOutput<pp::Var> callback); + virtual void Alert(const std::string& message); + virtual bool Confirm(const std::string& message); + virtual std::string Prompt(const std::string& question, + const std::string& default_answer); + virtual std::string GetURL(); + virtual void Email(const std::string& to, + const std::string& cc, + const std::string& bcc, + const std::string& subject, + const std::string& body); + virtual void Print(); + virtual void SubmitForm(const std::string& url, + const void* data, + int length); + virtual std::string ShowFileSelectionDialog(); + virtual pp::URLLoader CreateURLLoader(); + virtual void ScheduleCallback(int id, int delay_in_ms); + virtual void SearchString(const base::char16* string, + const base::char16* term, + bool case_sensitive, + std::vector<SearchStringResult>* results); + virtual void DocumentPaintOccurred(); + virtual void DocumentLoadComplete(int page_count); + virtual void DocumentLoadFailed(); + virtual pp::Instance* GetPluginInstance(); + virtual void DocumentHasUnsupportedFeature(const std::string& feature); + virtual void DocumentLoadProgress(uint32 available, uint32 doc_size); + virtual void FormTextFieldFocusChange(bool in_focus); + virtual bool IsPrintPreview(); + + private: + Client* client_; +}; + +} // namespace chrome_pdf + +#endif // PDF_PREVIEW_MODE_CLIENT_H_ diff --git a/pdf/progress_control.cc b/pdf/progress_control.cc new file mode 100644 index 0000000..2c2bca4 --- /dev/null +++ b/pdf/progress_control.cc @@ -0,0 +1,283 @@ +// Copyright (c) 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/progress_control.h" + +#include <algorithm> + +#include "base/logging.h" +#include "pdf/draw_utils.h" +#include "pdf/resource_consts.h" +#include "ppapi/cpp/dev/font_dev.h" + +namespace chrome_pdf { + +const double ProgressControl::kCompleted = 100.0; + +// There is a bug outputting text with alpha 0xFF (opaque) to an intermediate +// image. It outputs alpha channgel of the text pixels to 0xFF (transparent). +// And it breaks next alpha blending. +// For now, let's use alpha 0xFE to work around this bug. +// TODO(gene): investigate this bug. +const uint32 kProgressTextColor = 0xFEDDE6FC; +const uint32 kProgressTextSize = 16; +const uint32 kImageTextSpacing = 8; +const uint32 kTopPadding = 8; +const uint32 kBottomPadding = 12; +const uint32 kLeftPadding = 10; +const uint32 kRightPadding = 10; + +int ScaleInt(int val, float scale) { + return static_cast<int>(val * scale); +} + +ProgressControl::ProgressControl() + : progress_(0.0), + device_scale_(1.0) { +} + +ProgressControl::~ProgressControl() { +} + +bool ProgressControl::CreateProgressControl( + uint32 id, + bool visible, + Control::Owner* delegate, + double progress, + float device_scale, + const std::vector<pp::ImageData>& images, + const pp::ImageData& background, + const std::string& text) { + progress_ = progress; + text_ = text; + bool res = Control::Create(id, pp::Rect(), visible, delegate); + if (res) + Reconfigure(background, images, device_scale); + return res; +} + +void ProgressControl::Reconfigure(const pp::ImageData& background, + const std::vector<pp::ImageData>& images, + float device_scale) { + DCHECK(images.size() != 0); + images_ = images; + background_ = background; + device_scale_ = device_scale; + pp::Size ctrl_size; + CalculateLayout(owner()->GetInstance(), images_, background_, text_, + device_scale_, &ctrl_size, &image_rc_, &text_rc_); + pp::Rect rc(pp::Point(), ctrl_size); + Control::SetRect(rc, false); + PrepareBackground(); +} + +// static +void ProgressControl::CalculateLayout(pp::Instance* instance, + const std::vector<pp::ImageData>& images, + const pp::ImageData& background, + const std::string& text, + float device_scale, + pp::Size* ctrl_size, + pp::Rect* image_rc, + pp::Rect* text_rc) { + DCHECK(images.size() != 0); + int image_width = 0; + int image_height = 0; + for (size_t i = 0; i < images.size(); i++) { + image_width = std::max(image_width, images[i].size().width()); + image_height = std::max(image_height, images[i].size().height()); + } + + pp::FontDescription_Dev description; + description.set_family(PP_FONTFAMILY_SANSSERIF); + description.set_size(ScaleInt(kProgressTextSize, device_scale)); + description.set_weight(PP_FONTWEIGHT_BOLD); + pp::Font_Dev font(instance, description); + int text_length = font.MeasureSimpleText(text); + + pp::FontDescription_Dev desc; + PP_FontMetrics_Dev metrics; + font.Describe(&desc, &metrics); + int text_height = metrics.height; + + *ctrl_size = pp::Size( + image_width + text_length + + ScaleInt(kImageTextSpacing + kLeftPadding + kRightPadding, device_scale), + std::max(image_height, text_height) + + ScaleInt(kTopPadding + kBottomPadding, device_scale)); + + int offset_x = 0; + int offset_y = 0; + if (ctrl_size->width() < background.size().width()) { + offset_x += (background.size().width() - ctrl_size->width()) / 2; + ctrl_size->set_width(background.size().width()); + } + if (ctrl_size->height() < background.size().height()) { + offset_y += (background.size().height() - ctrl_size->height()) / 2; + ctrl_size->set_height(background.size().height()); + } + + *image_rc = pp::Rect(ScaleInt(kLeftPadding, device_scale) + offset_x, + ScaleInt(kTopPadding, device_scale) + offset_y, + image_width, + image_height); + + *text_rc = pp::Rect( + ctrl_size->width() - text_length - + ScaleInt(kRightPadding, device_scale) - offset_x, + (ctrl_size->height() - text_height) / 2, + text_length, + text_height); +} + +size_t ProgressControl::GetImageIngex() const { + return static_cast<size_t>((progress_ / 100.0) * images_.size()); +} + +void ProgressControl::Paint(pp::ImageData* image_data, const pp::Rect& rc) { + if (!visible()) + return; + + pp::Rect draw_rc = rect().Intersect(rc); + if (draw_rc.IsEmpty()) + return; + + pp::ImageData buffer(owner()->GetInstance(), ctrl_background_.format(), + ctrl_background_.size(), false); + CopyImage(ctrl_background_, pp::Rect(ctrl_background_.size()), + &buffer, pp::Rect(ctrl_background_.size()), false); + + size_t index = GetImageIngex(); + if (index >= images_.size()) + index = images_.size() - 1; + + AlphaBlend(images_[index], + pp::Rect(images_[index].size()), + &buffer, + image_rc_.point(), + kOpaqueAlpha); + + pp::Rect image_draw_rc(draw_rc); + image_draw_rc.Offset(-rect().x(), -rect().y()); + AlphaBlend(buffer, + image_draw_rc, + image_data, + draw_rc.point(), + transparency()); +} + +void ProgressControl::SetProgress(double progress) { + size_t old_index = GetImageIngex(); + progress_ = progress; + size_t new_index = GetImageIngex(); + if (progress_ >= kCompleted) { + progress_ = kCompleted; + owner()->OnEvent(id(), EVENT_ID_PROGRESS_COMPLETED, NULL); + } + if (visible() && old_index != new_index) + owner()->Invalidate(id(), rect()); +} + +void ProgressControl::PrepareBackground() { + AdjustBackground(); + + pp::FontDescription_Dev description; + description.set_family(PP_FONTFAMILY_SANSSERIF); + description.set_size(ScaleInt(kProgressTextSize, device_scale_)); + description.set_weight(PP_FONTWEIGHT_BOLD); + pp::Font_Dev font(owner()->GetInstance(), description); + + pp::FontDescription_Dev desc; + PP_FontMetrics_Dev metrics; + font.Describe(&desc, &metrics); + + pp::Point text_origin = pp::Point(text_rc_.x(), + (text_rc_.y() + text_rc_.bottom() + metrics.x_height) / 2); + font.DrawTextAt(&ctrl_background_, pp::TextRun_Dev(text_), text_origin, + kProgressTextColor, pp::Rect(ctrl_background_.size()), false); +} + +void ProgressControl::AdjustBackground() { + ctrl_background_ = pp::ImageData(owner()->GetInstance(), + PP_IMAGEDATAFORMAT_BGRA_PREMUL, + rect().size(), + false); + + if (rect().size() == background_.size()) { + CopyImage(background_, pp::Rect(background_.size()), + &ctrl_background_, pp::Rect(ctrl_background_.size()), false); + return; + } + + // We need to stretch background to new dimentions. To do so, we split + // background into 9 different parts. We copy corner rects (1,3,7,9) as is, + // stretch rectangles between corners (2,4,6,8) in 1 dimention, and + // stretch center rect (5) in 2 dimentions. + // |---|---|---| + // | 1 | 2 | 3 | + // |---|---|---| + // | 4 | 5 | 6 | + // |---|---|---| + // | 7 | 8 | 9 | + // |---|---|---| + int slice_x = background_.size().width() / 3; + int slice_y = background_.size().height() / 3; + + // Copy rect 1 + pp::Rect src_rc(0, 0, slice_x, slice_y); + pp::Rect dest_rc(0, 0, slice_x, slice_y); + CopyImage(background_, src_rc, &ctrl_background_, dest_rc, false); + + // Copy rect 3 + src_rc.set_x(background_.size().width() - slice_x); + dest_rc.set_x(ctrl_background_.size().width() - slice_x); + CopyImage(background_, src_rc, &ctrl_background_, dest_rc, false); + + // Copy rect 9 + src_rc.set_y(background_.size().height() - slice_y); + dest_rc.set_y(ctrl_background_.size().height() - slice_y); + CopyImage(background_, src_rc, &ctrl_background_, dest_rc, false); + + // Copy rect 7 + src_rc.set_x(0); + dest_rc.set_x(0); + CopyImage(background_, src_rc, &ctrl_background_, dest_rc, false); + + // Stretch rect 2 + src_rc = pp::Rect( + slice_x, 0, background_.size().width() - 2 * slice_x, slice_y); + dest_rc = pp::Rect( + slice_x, 0, ctrl_background_.size().width() - 2 * slice_x, slice_y); + CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true); + + // Copy rect 8 + src_rc.set_y(background_.size().height() - slice_y); + dest_rc.set_y(ctrl_background_.size().height() - slice_y); + CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true); + + // Stretch rect 4 + src_rc = pp::Rect( + 0, slice_y, slice_x, background_.size().height() - 2 * slice_y); + dest_rc = pp::Rect( + 0, slice_y, slice_x, ctrl_background_.size().height() - 2 * slice_y); + CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true); + + // Copy rect 6 + src_rc.set_x(background_.size().width() - slice_x); + dest_rc.set_x(ctrl_background_.size().width() - slice_x); + CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true); + + // Stretch rect 5 + src_rc = pp::Rect(slice_x, + slice_y, + background_.size().width() - 2 * slice_x, + background_.size().height() - 2 * slice_y); + dest_rc = pp::Rect(slice_x, + slice_y, + ctrl_background_.size().width() - 2 * slice_x, + ctrl_background_.size().height() - 2 * slice_y); + CopyImage(background_, src_rc, &ctrl_background_, dest_rc, true); +} + +} // namespace chrome_pdf diff --git a/pdf/progress_control.h b/pdf/progress_control.h new file mode 100644 index 0000000..96d5da1 --- /dev/null +++ b/pdf/progress_control.h @@ -0,0 +1,72 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_PROGRESS_CONTROL_H_ +#define PDF_PROGRESS_CONTROL_H_ + +#include <string> +#include <vector> + +#include "pdf/control.h" +#include "pdf/fading_control.h" +#include "ppapi/cpp/image_data.h" + +namespace chrome_pdf { + +class ProgressControl : public FadingControl { + public: + static const double kCompleted; + + enum ProgressEventIds { + EVENT_ID_PROGRESS_COMPLETED, + }; + + ProgressControl(); + virtual ~ProgressControl(); + virtual bool CreateProgressControl(uint32 id, + bool visible, + Control::Owner* delegate, + double progress, + float device_scale, + const std::vector<pp::ImageData>& images, + const pp::ImageData& background, + const std::string& text); + void Reconfigure(const pp::ImageData& background, + const std::vector<pp::ImageData>& images, + float device_scale); + + static void CalculateLayout(pp::Instance* instance, + const std::vector<pp::ImageData>& images, + const pp::ImageData& background, + const std::string& text, + float device_scale, + pp::Size* ctrl_size, + pp::Rect* image_rc, + pp::Rect* text_rc); + + // Control interface. + virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc); + + // ProgressControl interface + // Set progress indicator in percents from 0% to 100%. + virtual void SetProgress(double progress); + + private: + void PrepareBackground(); + void AdjustBackground(); + size_t GetImageIngex() const; + + double progress_; + float device_scale_; + std::vector<pp::ImageData> images_; + pp::ImageData background_; + pp::ImageData ctrl_background_; + std::string text_; + pp::Rect image_rc_; + pp::Rect text_rc_; +}; + +} // namespace chrome_pdf + +#endif // PDF_PROGRESS_CONTROL_H_ diff --git a/pdf/resource.h b/pdf/resource.h new file mode 100644 index 0000000..9fdbea7 --- /dev/null +++ b/pdf/resource.h @@ -0,0 +1,14 @@ +//{{NO_DEPENDENCIES}} +// Microsoft Visual C++ generated include file. +// Used by pdf.rc + +// Next default values for new objects +// +#ifdef APSTUDIO_INVOKED +#ifndef APSTUDIO_READONLY_SYMBOLS +#define _APS_NEXT_RESOURCE_VALUE 101 +#define _APS_NEXT_COMMAND_VALUE 40001 +#define _APS_NEXT_CONTROL_VALUE 1001 +#define _APS_NEXT_SYMED_VALUE 101 +#endif +#endif diff --git a/pdf/resource_consts.h b/pdf/resource_consts.h new file mode 100644 index 0000000..f12efd6 --- /dev/null +++ b/pdf/resource_consts.h @@ -0,0 +1,49 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_RESOURCE_RESOURCE_CONSTS_H_ +#define PDF_RESOURCE_RESOURCE_CONSTS_H_ + +#include "base/basictypes.h" + +namespace chrome_pdf { + +const int kDragTimerMs = 50; +const double kMinZoom = 0.1; +const double kMaxZoom = 10.0; +const double kZoomStep = 1.2; + +const uint32 kFadingTimeoutMs = 50; + +const uint32 kToolbarId = 10; +const uint32 kThumbnailsId = 11; +const uint32 kProgressBarId = 12; +const uint32 kPageIndicatorId = 13; +const uint32 kFitToPageButtonId = 100; +const uint32 kFitToWidthButtonId = 101; +const uint32 kZoomOutButtonId = 102; +const uint32 kZoomInButtonId = 103; +const uint32 kSaveButtonId = 104; +const uint32 kPrintButtonId = 105; + +const uint32 kAutoScrollId = 200; + +// fading_rect.left = button_rect.left - kToolbarFadingOffsetLeft +const int32 kToolbarFadingOffsetLeft = 40; +// fading_rect.top = button_rect.top - kToolbarFadingOffsetTop +const int32 kToolbarFadingOffsetTop = 40; +// fading_rect.right = button_rect.right + kToolbarFadingOffsetRight +const int32 kToolbarFadingOffsetRight = 10; +// fading_rect.bottom = button_rect.bottom + kToolbarFadingOffsetBottom +const int32 kToolbarFadingOffsetBottom = 8; + +const int32 kProgressOffsetLeft = 8; +const int32 kProgressOffsetBottom = 8; + +// Width of the thumbnails control. +const int32 kThumbnailsWidth = 196; + +} // namespace chrome_pdf + +#endif // PDF_RESOURCE_RESOURCE_CONSTS_H_ diff --git a/pdf/thumbnail_control.cc b/pdf/thumbnail_control.cc new file mode 100644 index 0000000..9a779b2 --- /dev/null +++ b/pdf/thumbnail_control.cc @@ -0,0 +1,301 @@ +// Copyright (c) 2012 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "pdf/thumbnail_control.h" + +#include <algorithm> + +#include "base/logging.h" +#include "base/strings/string_util.h" +#include "pdf/draw_utils.h" +#include "pdf/number_image_generator.h" + +namespace chrome_pdf { + +const int kLeftBorderSize = 52; +const int kBorderSize = 12; +const int kHighlightBorderSize = 2; + +const uint32 kLeftColor = 0x003F537B; +const uint32 kRightColor = 0x990D1626; + +const uint32 kTopHighlightColor = 0xFF426DC9; +const uint32 kBottomHighlightColor = 0xFF6391DE; +const uint32 kThumbnailBackgroundColor = 0xFF000000; + +const uint32 kSlidingTimeoutMs = 50; +const int32 kSlidingShift = 50; + +const double kNonSelectedThumbnailAlpha = 0.91; + +ThumbnailControl::ThumbnailControl() + : engine_(NULL), sliding_width_(0), sliding_shift_(kSlidingShift), + sliding_timeout_(kSlidingTimeoutMs), sliding_timer_id_(0) { +} + +ThumbnailControl::~ThumbnailControl() { + ClearCache(); +} + +bool ThumbnailControl::CreateThumbnailControl( + uint32 id, const pp::Rect& rc, + bool visible, Owner* owner, PDFEngine* engine, + NumberImageGenerator* number_image_generator) { + engine_ = engine; + number_image_generator_ = number_image_generator; + sliding_width_ = rc.width(); + + return Control::Create(id, rc, visible, owner); +} + +void ThumbnailControl::SetPosition(int position, int total, bool invalidate) { + visible_rect_ = pp::Rect(); + visible_pages_.clear(); + + if (rect().width() < kLeftBorderSize + kBorderSize) { + return; // control is too narrow to show thumbnails. + } + + int num_pages = engine_->GetNumberOfPages(); + + int max_doc_width = 0, total_doc_height = 0; + std::vector<pp::Rect> page_sizes(num_pages); + for (int i = 0; i < num_pages; ++i) { + page_sizes[i] = engine_->GetPageRect(i); + max_doc_width = std::max(max_doc_width, page_sizes[i].width()); + total_doc_height += page_sizes[i].height(); + } + + if (!max_doc_width) + return; + + int max_thumbnail_width = rect().width() - kLeftBorderSize - kBorderSize; + double thumbnail_ratio = + max_thumbnail_width / static_cast<double>(max_doc_width); + + int total_thumbnail_height = 0; + for (int i = 0; i < num_pages; ++i) { + total_thumbnail_height += kBorderSize; + int thumbnail_width = + static_cast<int>(page_sizes[i].width() * thumbnail_ratio); + int thumbnail_height = + static_cast<int>(page_sizes[i].height() * thumbnail_ratio); + int x = (max_thumbnail_width - thumbnail_width) / 2; + page_sizes[i] = + pp::Rect(x, total_thumbnail_height, thumbnail_width, thumbnail_height); + total_thumbnail_height += thumbnail_height; + } + total_thumbnail_height += kBorderSize; + + int visible_y = 0; + if (total > 0) { + double range = total_thumbnail_height - rect().height(); + if (range < 0) + range = 0; + visible_y = static_cast<int>(range * position / total); + } + visible_rect_ = pp::Rect(0, visible_y, max_thumbnail_width, rect().height()); + + for (int i = 0; i < num_pages; ++i) { + if (page_sizes[i].Intersects(visible_rect_)) { + PageInfo page_info; + page_info.index = i; + page_info.rect = page_sizes[i]; + page_info.rect.Offset(kLeftBorderSize, -visible_rect_.y()); + visible_pages_.push_back(page_info); + } + } + + if (invalidate) + owner()->Invalidate(id(), rect()); +} + +void ThumbnailControl::Show(bool visible, bool invalidate) { + if (!visible || invalidate) + ClearCache(); + sliding_width_ = rect().width(); + Control::Show(visible, invalidate); +} + +void ThumbnailControl::SlideIn() { + if (visible()) + return; + + Show(true, false); + sliding_width_ = 0; + sliding_shift_ = kSlidingShift; + + sliding_timer_id_ = owner()->ScheduleTimer(id(), sliding_timeout_); + owner()->Invalidate(id(), rect()); +} + +void ThumbnailControl::SlideOut() { + if (!visible()) + return; + sliding_shift_ = -kSlidingShift; + sliding_timer_id_ = owner()->ScheduleTimer(id(), sliding_timeout_); +} + +void ThumbnailControl::Paint(pp::ImageData* image_data, const pp::Rect& rc) { + if (!visible()) + return; + + pp::Rect control_rc(rect()); + control_rc.Offset(control_rc.width() - sliding_width_, 0); + control_rc.set_width(sliding_width_); + + pp::Rect draw_rc = rc.Intersect(control_rc); + if (draw_rc.IsEmpty()) + return; + + pp::Rect gradient_rc(control_rc.x(), draw_rc.y(), + control_rc.width(), draw_rc.height()); + GradientFill(owner()->GetInstance(), + image_data, + draw_rc, + gradient_rc, + kLeftColor, + kRightColor, + true, + transparency()); + + int selected_page = engine_->GetMostVisiblePage(); + for (size_t i = 0; i < visible_pages_.size(); ++i) { + pp::Rect page_rc = visible_pages_[i].rect; + page_rc.Offset(control_rc.point()); + + if (visible_pages_[i].index == selected_page) { + pp::Rect highlight_rc = page_rc; + highlight_rc.Inset(-kHighlightBorderSize, -kHighlightBorderSize); + GradientFill(owner()->GetInstance(), + image_data, + draw_rc, + highlight_rc, + kTopHighlightColor, + kBottomHighlightColor, + false, + transparency()); + } + + pp::Rect draw_page_rc = page_rc.Intersect(draw_rc); + if (draw_page_rc.IsEmpty()) + continue; + + // First search page image in the cache. + pp::ImageData* thumbnail = NULL; + std::map<int, pp::ImageData*>::iterator it = + image_cache_.find(visible_pages_[i].index); + if (it != image_cache_.end()) { + if (it->second->size() == page_rc.size()) + thumbnail = image_cache_[visible_pages_[i].index]; + else + image_cache_.erase(it); + } + + // If page is not found in the cache, create new one. + if (thumbnail == NULL) { + thumbnail = new pp::ImageData(owner()->GetInstance(), + PP_IMAGEDATAFORMAT_BGRA_PREMUL, + page_rc.size(), + false); + engine_->PaintThumbnail(thumbnail, visible_pages_[i].index); + + pp::ImageData page_number; + number_image_generator_->GenerateImage( + visible_pages_[i].index + 1, &page_number); + pp::Point origin( + (thumbnail->size().width() - page_number.size().width()) / 2, + (thumbnail->size().height() - page_number.size().height()) / 2); + + if (origin.x() > 0 && origin.y() > 0) { + AlphaBlend(page_number, pp::Rect(pp::Point(), page_number.size()), + thumbnail, origin, kOpaqueAlpha); + } + + image_cache_[visible_pages_[i].index] = thumbnail; + } + + uint8 alpha = transparency(); + if (visible_pages_[i].index != selected_page) + alpha = static_cast<uint8>(alpha * kNonSelectedThumbnailAlpha); + FillRect(image_data, draw_page_rc, kThumbnailBackgroundColor); + draw_page_rc.Offset(-page_rc.x(), -page_rc.y()); + AlphaBlend(*thumbnail, draw_page_rc, image_data, + draw_page_rc.point() + page_rc.point(), alpha); + } +} + +bool ThumbnailControl::HandleEvent(const pp::InputEvent& event) { + if (!visible()) + return false; + + pp::MouseInputEvent mouse_event(event); + if (mouse_event.is_null()) + return false; + pp::Point pt = mouse_event.GetPosition(); + if (!rect().Contains(pt)) + return false; + + int over_page = -1; + for (size_t i = 0; i < visible_pages_.size(); ++i) { + pp::Rect page_rc = visible_pages_[i].rect; + page_rc.Offset(rect().point()); + if (page_rc.Contains(pt)) { + over_page = i; + break; + } + } + + bool handled = false; + switch (event.GetType()) { + case PP_INPUTEVENT_TYPE_MOUSEMOVE: + owner()->SetCursor(id(), + over_page == -1 ? PP_CURSORTYPE_POINTER : PP_CURSORTYPE_HAND); + break; + case PP_INPUTEVENT_TYPE_MOUSEDOWN: + if (over_page != -1) { + owner()->Invalidate(id(), rect()); + owner()->OnEvent(id(), EVENT_ID_THUMBNAIL_SELECTED, + &visible_pages_[over_page].index); + } + handled = true; + break; + default: + break; + } + + return handled; +} + +void ThumbnailControl::OnTimerFired(uint32 timer_id) { + if (timer_id == sliding_timer_id_) { + sliding_width_ += sliding_shift_; + if (sliding_width_ <= 0) { + // We completely slided out. Make control invisible now. + Show(false, false); + } else if (sliding_width_ >= rect().width()) { + // We completely slided in. Make sliding width to full control width. + sliding_width_ = rect().width(); + } else { + // We have not completed sliding yet. Keep sliding. + sliding_timer_id_ = owner()->ScheduleTimer(id(), sliding_timeout_); + } + owner()->Invalidate(id(), rect()); + } +} + +void ThumbnailControl::ResetEngine(PDFEngine* engine) { + engine_ = engine; + ClearCache(); +} + +void ThumbnailControl::ClearCache() { + std::map<int, pp::ImageData*>::iterator it; + for (it = image_cache_.begin(); it != image_cache_.end(); ++it) { + delete it->second; + } + image_cache_.clear(); +} + +} // namespace chrome_pdf diff --git a/pdf/thumbnail_control.h b/pdf/thumbnail_control.h new file mode 100644 index 0000000..d10a328 --- /dev/null +++ b/pdf/thumbnail_control.h @@ -0,0 +1,67 @@ +// Copyright (c) 2010 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef PDF_THUMBNAIL_CONTROL_H_ +#define PDF_THUMBNAIL_CONTROL_H_ + +#include <map> +#include <vector> + +#include "pdf/control.h" +#include "pdf/pdf_engine.h" +#include "ppapi/cpp/input_event.h" + +namespace chrome_pdf { + +class NumberImageGenerator; + +class ThumbnailControl : public Control { + public: + enum ThumbnailEventIds { + EVENT_ID_THUMBNAIL_SELECTED = 100, + }; + + explicit ThumbnailControl(); + virtual ~ThumbnailControl(); + + // Sets current position of the thumnail control. + void SetPosition(int position, int total, bool invalidate); + void SlideIn(); + void SlideOut(); + + virtual bool CreateThumbnailControl( + uint32 id, const pp::Rect& rc, + bool visible, Owner* owner, PDFEngine* engine, + NumberImageGenerator* number_image_generator); + + // Control interface. + virtual void Show(bool visible, bool invalidate); + virtual void Paint(pp::ImageData* image_data, const pp::Rect& rc); + virtual bool HandleEvent(const pp::InputEvent& event); + virtual void OnTimerFired(uint32 timer_id); + + virtual void ResetEngine(PDFEngine* engine); + + private: + void ClearCache(); + + struct PageInfo { + int index; + pp::Rect rect; + }; + + PDFEngine* engine_; + pp::Rect visible_rect_; + std::vector<PageInfo> visible_pages_; + std::map<int, pp::ImageData*> image_cache_; + int sliding_width_; + int sliding_shift_; + int sliding_timeout_; + uint32 sliding_timer_id_; + NumberImageGenerator* number_image_generator_; +}; + +} // namespace chrome_pdf + +#endif // PDF_THUMBNAIL_CONTROL_H_ |