// 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 #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 const uint32 kPendingPageColor = 0xFFEEEEEE; #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 GetPageNumbersFromPrintPageNumberRange( const PP_PrintPageNumberRange_Dev* page_ranges, uint32_t page_range_count) { std::vector 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; }; PP_BrowserFont_Trusted_Weight WeightToBrowserFontTrustedWeight(int weight) { COMPILE_ASSERT(PP_BROWSERFONT_TRUSTED_WEIGHT_100 == 0, PP_BrowserFont_Trusted_Weight_Min); COMPILE_ASSERT(PP_BROWSERFONT_TRUSTED_WEIGHT_900 == 8, PP_BrowserFont_Trusted_Weight_Max); const int kMinimumWeight = 100; const int kMaximumWeight = 900; int normalized_weight = std::min(std::max(weight, kMinimumWeight), kMaximumWeight); normalized_weight = (normalized_weight / 100) - 1; return static_cast(normalized_weight); } // 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) { // Do not attempt to map fonts if pepper is not initialized (for privet local // printing). // TODO(noamsml): Real font substitution (http://crbug.com/391978) if (!pp::Module::Get()) return NULL; 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); description.set_weight(WeightToBrowserFontTrustedWeight(weight)); description.set_italic(italic > 0); } 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(charset)); long res_id = font_resource; return reinterpret_cast(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(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(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(); } 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(content_rect.width()) / actual_source_page_width; double ratio_y = static_cast(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() { for (size_t i = 0; i < pages_.size(); ++i) pages_[i]->Unload(); if (doc_) { if (form_) { FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_WC); FPDFDOC_ExitFormFillEnviroument(form_); } FPDF_CloseDocument(doc_); } if (fpdf_availability_) FPDFAvail_Destroy(fpdf_availability_); STLDeleteElements(&pages_); } int PDFiumEngine::GetBlock(void* param, unsigned long position, unsigned char* buffer, unsigned long size) { DocumentLoader* loader = static_cast(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(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(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* ready, std::vector* 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(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 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(); } FPDF_DOCUMENT PDFiumEngine::CreateSinglePageRasterPdf( double source_page_width, double source_page_height, const PP_PrintSettings_Dev& print_settings, PDFiumPage* page_to_print) { FPDF_DOCUMENT temp_doc = FPDF_CreateNewDocument(); if (!temp_doc) return temp_doc; const pp::Size& bitmap_size(page_to_print->rect().size()); FPDF_PAGE temp_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(), 0xFFFFFFFF); pp::Rect page_rect = page_to_print->rect(); FPDF_RenderPageBitmap(bitmap, page_to_print->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(bitmap_size.width()) * kPointsPerInch) / print_settings.dpi; double ratio_y = (static_cast(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 temp_img = FPDFPageObj_NewImgeObj(temp_doc); FPDFImageObj_SetBitmap(&temp_page, 1, temp_img, bitmap); FPDFImageObj_SetMatrix(temp_img, ratio_x, 0, 0, ratio_y, 0, 0); FPDFPage_InsertObject(temp_page, temp_img); FPDFPage_GenerateContent(temp_page); FPDF_ClosePage(temp_page); page_to_print->ClosePrintPage(); FPDFBitmap_Destroy(bitmap); return temp_doc; } 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 pages_to_print; // width and height of source PDF pages. std::vector > source_page_sizes; // Collect pages to print and sizes of source pages. std::vector 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(kPointsPerInch), print_settings.dpi); int height_in_pixels = ConvertUnit(source_page_height, static_cast(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; // Use temp_doc to compress image by saving PDF to buffer. FPDF_DOCUMENT temp_doc = CreateSinglePageRasterPdf(source_page_width, source_page_height, print_settings, &pages_to_print[i]); if (!temp_doc) break; 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); 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 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((mouse_point.x() + position_.x()) / current_zoom_), static_cast((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 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(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(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(WriteInto(&page_text, text_length + 1)); FPDFText_GetText(pages_[current_page]->GetTextPage(), character_to_start_searching_from, text_length, data); std::vector 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(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(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 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(center.y() * current_zoom_) - static_cast(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(center.x() * current_zoom_) - static_cast(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 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 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(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(), 0xFFFFFFFF); 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(), kPendingPageColor); } 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(index) > pages_.size() - 1) return "{}"; // TODO(thestig) Remove after debugging http://crbug.com/402035 CHECK(pages_[index]); scoped_ptr 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 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)); // TODO(thestig) Remove after debugging http://crbug.com/402035 CHECK(pages_.back()); } 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(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 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)); // TODO(thestig) Remove after debugging http://crbug.com/402035 CHECK(pages_.back()); } } 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(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(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* pending) { if (!doc_ || !form_) return false; if (static_cast(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(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( width_in_points * kPixelsPerInch / kPointsPerInch); int height_in_pixels = static_cast( 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(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, 0xFFFFFFFF); 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(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(), kBackgroundColor); } 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(), kBackgroundColor); } // 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(), kBackgroundColor); } 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(ceil(kPageShadowLeft * current_zoom_)), static_cast(ceil(kPageShadowTop * current_zoom_)), static_cast(ceil(kPageShadowRight * current_zoom_)), static_cast(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 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 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, kPendingPageColor); 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(position_.x() / current_zoom_)); rv.set_y(static_cast(position_.y() / current_zoom_)); rv.set_width(static_cast(ceil(plugin_size_.width() / current_zoom_))); rv.set_height(static_cast(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(ceil(rect.right() * current_zoom_ - position_.x())); int bottom = static_cast(ceil(rect.bottom() * current_zoom_ - position_.y())); rv.set_x(static_cast(rect.x() * current_zoom_ - position_.x())); rv.set_y(static_cast(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* 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(buffer) + y * stride + x * 4; // This is our highlight color. pixel[0] = static_cast( pixel[0] * (kHighlightColorB / 255.0)); pixel[1] = static_cast( pixel[1] * (kHighlightColorG / 255.0)); pixel[2] = static_cast( 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 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* 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 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((device_x + position_.x())/ current_zoom_ - pages_[page_index]->rect().x()); int temp_y = static_cast((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(scale_factor), 0, 0, static_cast(scale_factor), static_cast(offset_x), static_cast(offset_y)}; FS_RECTF cliprect = {static_cast(source_clip_box.left+offset_x), static_cast(source_clip_box.top+offset_y), static_cast(source_clip_box.right+offset_x), static_cast(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; 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(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, kBackgroundColor)); 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(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(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(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(param); engine->timers_[++engine->next_timer_id_] = std::pair(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(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(param); if (page_index < 0 || page_index >= static_cast(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(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(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(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(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(param); std::string message_str = base::UTF16ToUTF8(reinterpret_cast(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(question)); std::string default_str = base::UTF16ToUTF8( reinterpret_cast(default_response)); PDFiumEngine* engine = static_cast(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) { int bytes_to_copy = rv_bytes < length ? rv_bytes : length; memcpy(response, rv_16.c_str(), bytes_to_copy); } return rv_bytes; } int PDFiumEngine::Form_GetFilePath(IPDF_JSPLATFORM* param, void* file_path, int length) { PDFiumEngine* engine = static_cast(param); std::string rv = engine->client_->GetURL(); if (file_path && rv.size() <= static_cast(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(to)); std::string cc_str = base::UTF16ToUTF8(reinterpret_cast(cc)); std::string bcc_str = base::UTF16ToUTF8(reinterpret_cast(bcc)); std::string subject_str = base::UTF16ToUTF8(reinterpret_cast(subject)); std::string message_str = base::UTF16ToUTF8(reinterpret_cast(message)); PDFiumEngine* engine = static_cast(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(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(url)); PDFiumEngine* engine = static_cast(param); engine->client_->SubmitForm(url_str, form_data, length); } void PDFiumEngine::Form_GotoPage(IPDF_JSPLATFORM* param, int page_number) { PDFiumEngine* engine = static_cast(param); engine->client_->ScrollToPage(page_number); } int PDFiumEngine::Form_Browse(IPDF_JSPLATFORM* param, void* file_path, int length) { PDFiumEngine* engine = static_cast(param); std::string path = engine->client_->ShowFileSelectionDialog(); if (path.size() + 1 <= static_cast(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(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( FPDF_GetPageWidth(page) * settings.dpi_x / kPointsPerInch); int page_height = static_cast( 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 = 3; // 90 degrees counter-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(), 0xFFFFFFFF); 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(), 0xFFFFFFFF); // 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; } bool PDFiumEngineExports::GetPDFPageSizeByIndex( const void* pdf_buffer, int pdf_buffer_size, int page_number, double* width, double* height) { FPDF_DOCUMENT doc = FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, NULL); if (!doc) return false; bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0; FPDF_CloseDocument(doc); return success; } } // namespace chrome_pdf