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// Copyright (c) 2009 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 "chrome/plugin/webplugin_proxy.h"
#include "build/build_config.h"
#include "app/gfx/canvas.h"
#if defined(OS_WIN)
#include "app/gfx/gdi_util.h"
#include "app/win_util.h"
#endif
#include "app/gfx/blit.h"
#if defined(OS_MACOSX)
#include "base/mac_util.h"
#endif
#include "base/scoped_handle.h"
#include "base/shared_memory.h"
#include "base/singleton.h"
#include "build/build_config.h"
#include "chrome/common/child_process_logging.h"
#include "chrome/common/plugin_messages.h"
#include "chrome/common/url_constants.h"
#include "chrome/plugin/npobject_proxy.h"
#include "chrome/plugin/npobject_util.h"
#include "chrome/plugin/plugin_channel.h"
#include "chrome/plugin/plugin_thread.h"
#include "chrome/plugin/webplugin_delegate_stub.h"
#include "skia/ext/platform_device.h"
#include "webkit/api/public/WebBindings.h"
#include "webkit/glue/plugins/webplugin_delegate_impl.h"
using WebKit::WebBindings;
using webkit_glue::WebPluginResourceClient;
typedef std::map<CPBrowsingContext, WebPluginProxy*> ContextMap;
static ContextMap& GetContextMap() {
return *Singleton<ContextMap>::get();
}
WebPluginProxy::WebPluginProxy(
PluginChannel* channel,
int route_id,
const GURL& page_url,
gfx::NativeViewId containing_window)
: channel_(channel),
route_id_(route_id),
cp_browsing_context_(0),
window_npobject_(NULL),
plugin_element_(NULL),
delegate_(NULL),
waiting_for_paint_(false),
containing_window_(containing_window),
page_url_(page_url),
ALLOW_THIS_IN_INITIALIZER_LIST(runnable_method_factory_(this)) {
}
WebPluginProxy::~WebPluginProxy() {
if (cp_browsing_context_)
GetContextMap().erase(cp_browsing_context_);
}
bool WebPluginProxy::Send(IPC::Message* msg) {
return channel_->Send(msg);
}
void WebPluginProxy::SetWindow(gfx::PluginWindowHandle window) {
Send(new PluginHostMsg_SetWindow(route_id_, window));
}
void WebPluginProxy::WillDestroyWindow(gfx::PluginWindowHandle window) {
#if defined(OS_WIN)
PluginThread::current()->Send(
new PluginProcessHostMsg_PluginWindowDestroyed(
window, ::GetParent(window)));
#elif defined(OS_LINUX)
// Nothing to do.
#else
NOTIMPLEMENTED();
#endif
}
#if defined(OS_WIN)
void WebPluginProxy::SetWindowlessPumpEvent(HANDLE pump_messages_event) {
HANDLE pump_messages_event_for_renderer = NULL;
DuplicateHandle(GetCurrentProcess(), pump_messages_event,
channel_->renderer_handle(),
&pump_messages_event_for_renderer,
0, FALSE, DUPLICATE_SAME_ACCESS);
DCHECK(pump_messages_event_for_renderer != NULL);
Send(new PluginHostMsg_SetWindowlessPumpEvent(
route_id_, pump_messages_event_for_renderer));
}
#endif
void WebPluginProxy::CancelResource(int id) {
Send(new PluginHostMsg_CancelResource(route_id_, id));
resource_clients_.erase(id);
}
void WebPluginProxy::Invalidate() {
gfx::Rect rect(0, 0,
delegate_->GetRect().width(),
delegate_->GetRect().height());
InvalidateRect(rect);
}
void WebPluginProxy::InvalidateRect(const gfx::Rect& rect) {
#if defined(OS_MACOSX)
// Some plugins will send invalidates larger than their own rect when
// offscreen, so constrain invalidates to the plugin rect.
gfx::Rect plugin_rect = delegate_->GetRect();
plugin_rect.set_origin(gfx::Point(0, 0));
const gfx::Rect invalidate_rect(rect.Intersect(plugin_rect));
#else
const gfx::Rect invalidate_rect(rect);
#endif
damaged_rect_ = damaged_rect_.Union(invalidate_rect);
// Ignore NPN_InvalidateRect calls with empty rects. Also don't send an
// invalidate if it's outside the clipping region, since if we did it won't
// lead to a paint and we'll be stuck waiting forever for a DidPaint response.
//
// TODO(piman): There is a race condition here, because this test assumes
// that when the paint actually occurs, the clip rect will not have changed.
// This is not true because scrolling (or window resize) could occur and be
// handled by the renderer before it receives the InvalidateRect message,
// changing the clip rect and then not painting.
if (invalidate_rect.IsEmpty() ||
!delegate_->GetClipRect().Intersects(invalidate_rect))
return;
// Only send a single InvalidateRect message at a time. From DidPaint we
// will dispatch an additional InvalidateRect message if necessary.
if (!waiting_for_paint_) {
waiting_for_paint_ = true;
// Invalidates caused by calls to NPN_InvalidateRect/NPN_InvalidateRgn
// need to be painted asynchronously as per the NPAPI spec.
MessageLoop::current()->PostTask(FROM_HERE,
runnable_method_factory_.NewRunnableMethod(
&WebPluginProxy::OnPaint, damaged_rect_));
damaged_rect_ = gfx::Rect();
}
}
NPObject* WebPluginProxy::GetWindowScriptNPObject() {
if (window_npobject_)
return WebBindings::retainObject(window_npobject_);
int npobject_route_id = channel_->GenerateRouteID();
bool success = false;
intptr_t npobject_ptr;
Send(new PluginHostMsg_GetWindowScriptNPObject(
route_id_, npobject_route_id, &success, &npobject_ptr));
if (!success)
return NULL;
window_npobject_ = NPObjectProxy::Create(
channel_, npobject_route_id, npobject_ptr, containing_window_, page_url_);
return window_npobject_;
}
NPObject* WebPluginProxy::GetPluginElement() {
if (plugin_element_)
return WebBindings::retainObject(plugin_element_);
int npobject_route_id = channel_->GenerateRouteID();
bool success = false;
intptr_t npobject_ptr;
Send(new PluginHostMsg_GetPluginElement(
route_id_, npobject_route_id, &success, &npobject_ptr));
if (!success)
return NULL;
plugin_element_ = NPObjectProxy::Create(
channel_, npobject_route_id, npobject_ptr, containing_window_, page_url_);
return plugin_element_;
}
void WebPluginProxy::SetCookie(const GURL& url,
const GURL& policy_url,
const std::string& cookie) {
Send(new PluginHostMsg_SetCookie(route_id_, url, policy_url, cookie));
}
std::string WebPluginProxy::GetCookies(const GURL& url,
const GURL& policy_url) {
std::string cookies;
Send(new PluginHostMsg_GetCookies(route_id_, url, policy_url, &cookies));
return cookies;
}
void WebPluginProxy::ShowModalHTMLDialog(const GURL& url, int width, int height,
const std::string& json_arguments,
std::string* json_retval) {
PluginHostMsg_ShowModalHTMLDialog* msg =
new PluginHostMsg_ShowModalHTMLDialog(
route_id_, url, width, height, json_arguments, json_retval);
// Pump messages while waiting for a response (which won't come until the
// dialog is closed). This avoids a deadlock.
msg->EnableMessagePumping();
Send(msg);
}
void WebPluginProxy::OnMissingPluginStatus(int status) {
Send(new PluginHostMsg_MissingPluginStatus(route_id_, status));
}
CPBrowsingContext WebPluginProxy::GetCPBrowsingContext() {
if (cp_browsing_context_ == 0) {
Send(new PluginHostMsg_GetCPBrowsingContext(route_id_,
&cp_browsing_context_));
GetContextMap()[cp_browsing_context_] = this;
}
return cp_browsing_context_;
}
WebPluginProxy* WebPluginProxy::FromCPBrowsingContext(
CPBrowsingContext context) {
return GetContextMap()[context];
}
WebPluginResourceClient* WebPluginProxy::GetResourceClient(int id) {
ResourceClientMap::iterator iterator = resource_clients_.find(id);
// The IPC messages which deal with streams are now asynchronous. It is
// now possible to receive stream messages from the renderer for streams
// which may have been cancelled by the plugin.
if (iterator == resource_clients_.end()) {
return NULL;
}
return iterator->second;
}
int WebPluginProxy::GetRendererId() {
if (channel_.get())
return channel_->renderer_id();
return -1;
}
void WebPluginProxy::DidPaint() {
// If we have an accumulated damaged rect, then check to see if we need to
// send out another InvalidateRect message.
waiting_for_paint_ = false;
if (!damaged_rect_.IsEmpty())
InvalidateRect(damaged_rect_);
}
void WebPluginProxy::OnResourceCreated(int resource_id, HANDLE cookie) {
WebPluginResourceClient* resource_client =
reinterpret_cast<WebPluginResourceClient*>(cookie);
if (!resource_client) {
NOTREACHED();
return;
}
DCHECK(resource_clients_.find(resource_id) == resource_clients_.end());
resource_clients_[resource_id] = resource_client;
}
void WebPluginProxy::HandleURLRequest(const char *method,
bool is_javascript_url,
const char* target, unsigned int len,
const char* buf, bool is_file_data,
bool notify, const char* url,
intptr_t notify_data,
bool popups_allowed) {
if (!url) {
NOTREACHED();
return;
}
if (!target && (0 == base::strcasecmp(method, "GET"))) {
// Please refer to https://bugzilla.mozilla.org/show_bug.cgi?id=366082
// for more details on this.
if (delegate_->GetQuirks() &
WebPluginDelegateImpl::PLUGIN_QUIRK_BLOCK_NONSTANDARD_GETURL_REQUESTS) {
GURL request_url(url);
if (!request_url.SchemeIs(chrome::kHttpScheme) &&
!request_url.SchemeIs(chrome::kHttpsScheme) &&
!request_url.SchemeIs(chrome::kFtpScheme)) {
return;
}
}
}
PluginHostMsg_URLRequest_Params params;
params.method = method;
params.is_javascript_url = is_javascript_url;
if (target)
params.target = std::string(target);
if (len) {
params.buffer.resize(len);
memcpy(¶ms.buffer.front(), buf, len);
}
params.is_file_data = is_file_data;
params.notify = notify;
params.url = url;
params.notify_data = notify_data;
params.popups_allowed = popups_allowed;
Send(new PluginHostMsg_URLRequest(route_id_, params));
}
bool WebPluginProxy::GetDragData(struct NPObject* event, bool add_data,
int32* identity, int32* event_id,
std::string* type, std::string* data) {
DCHECK(event);
NPObjectProxy* proxy = NPObjectProxy::GetProxy(event);
if (!proxy) // NPObject* event should have/be a renderer proxy.
return false;
NPVariant_Param event_param;
event_param.type = NPVARIANT_PARAM_OBJECT_POINTER;
event_param.npobject_pointer = proxy->npobject_ptr();
if (!event_param.npobject_pointer)
return false;
std::vector<NPVariant_Param> values;
bool success = false;
Send(new PluginHostMsg_GetDragData(route_id_, event_param, add_data,
&values, &success));
if (!success)
return false;
DCHECK(values.size() == 4);
DCHECK(values[0].type == NPVARIANT_PARAM_INT);
*identity = static_cast<int32>(values[0].int_value);
DCHECK(values[1].type == NPVARIANT_PARAM_INT);
*event_id = static_cast<int32>(values[1].int_value);
DCHECK(values[2].type == NPVARIANT_PARAM_STRING);
type->swap(values[2].string_value);
if (add_data && (values[3].type == NPVARIANT_PARAM_STRING))
data->swap(values[3].string_value);
return true;
}
bool WebPluginProxy::SetDropEffect(struct NPObject* event, int effect) {
DCHECK(event);
NPObjectProxy* proxy = NPObjectProxy::GetProxy(event);
if (!proxy) // NPObject* event should have/be a renderer proxy.
return false;
NPVariant_Param event_param;
event_param.type = NPVARIANT_PARAM_OBJECT_POINTER;
event_param.npobject_pointer = proxy->npobject_ptr();
if (!event_param.npobject_pointer)
return false;
bool success = false;
Send(new PluginHostMsg_SetDropEffect(route_id_, event_param, effect,
&success));
return success;
}
void WebPluginProxy::Paint(const gfx::Rect& rect) {
#if defined(OS_WIN) || defined(OS_LINUX)
if (!windowless_canvas_.get())
return;
#elif defined(OS_MACOSX)
if (!windowless_context_.get())
return;
#endif
// Clear the damaged area so that if the plugin doesn't paint there we won't
// end up with the old values.
gfx::Rect offset_rect = rect;
offset_rect.Offset(delegate_->GetRect().origin());
#if defined(OS_WIN) || defined(OS_LINUX)
windowless_canvas_->save();
// The given clip rect is in global coordinates, so install it before the
// transformation is done for the coordinate system.
SkRect sk_rect = { SkIntToScalar(rect.x()),
SkIntToScalar(rect.y()),
SkIntToScalar(rect.right()),
SkIntToScalar(rect.bottom()) };
windowless_canvas_->clipRect(sk_rect);
windowless_canvas_->translate(SkIntToScalar(-delegate_->GetRect().x()),
SkIntToScalar(-delegate_->GetRect().y()));
// Setup the background.
if (!background_canvas_.get()) {
SkPaint black_fill_paint;
black_fill_paint.setARGB(0xFF, 0x00, 0x00, 0x00);
windowless_canvas_->drawPaint(black_fill_paint);
} else {
SkIRect src_rect = { rect.x(), rect.y(),
rect.x() + offset_rect.width(),
rect.y() + offset_rect.height() };
SkRect dest_rect = { SkIntToScalar(offset_rect.x()),
SkIntToScalar(offset_rect.y()),
SkIntToScalar(offset_rect.right()),
SkIntToScalar(offset_rect.bottom()) };
const SkBitmap& background_bitmap =
background_canvas_->getTopPlatformDevice().accessBitmap(false);
windowless_canvas_->drawBitmapRect(background_bitmap, &src_rect, dest_rect);
}
// Before we send the invalidate, paint so that renderer uses the updated
// bitmap.
delegate_->Paint(windowless_canvas_.get(), offset_rect);
windowless_canvas_->restore();
#elif defined(OS_MACOSX)
CGContextSaveGState(windowless_context_);
if (!background_context_.get()) {
CGContextSetFillColorWithColor(windowless_context_,
CGColorGetConstantColor(kCGColorBlack));
CGContextFillRect(windowless_context_, rect.ToCGRect());
} else {
scoped_cftyperef<CGImageRef> image(
CGBitmapContextCreateImage(background_context_));
scoped_cftyperef<CGImageRef> sub_image(
CGImageCreateWithImageInRect(image, rect.ToCGRect()));
CGContextDrawImage(windowless_context_, rect.ToCGRect(), sub_image);
}
CGContextClipToRect(windowless_context_, rect.ToCGRect());
delegate_->Paint(windowless_context_, rect);
CGContextRestoreGState(windowless_context_);
#endif
}
void WebPluginProxy::UpdateGeometry(
const gfx::Rect& window_rect,
const gfx::Rect& clip_rect,
const TransportDIB::Handle& windowless_buffer,
const TransportDIB::Handle& background_buffer) {
gfx::Rect old = delegate_->GetRect();
gfx::Rect old_clip_rect = delegate_->GetClipRect();
delegate_->UpdateGeometry(window_rect, clip_rect);
if (TransportDIB::is_valid(windowless_buffer)) {
// The plugin's rect changed, so now we have a new buffer to draw into.
SetWindowlessBuffer(windowless_buffer, background_buffer);
}
// Send over any pending invalidates which occured when the plugin was
// off screen.
if (delegate_->IsWindowless() && !clip_rect.IsEmpty() &&
old_clip_rect.IsEmpty() && !damaged_rect_.IsEmpty()) {
InvalidateRect(damaged_rect_);
}
}
#if defined(OS_WIN)
void WebPluginProxy::SetWindowlessBuffer(
const TransportDIB::Handle& windowless_buffer,
const TransportDIB::Handle& background_buffer) {
// Create a canvas that will reference the shared bits.
windowless_canvas_.reset(new skia::PlatformCanvas(
delegate_->GetRect().width(),
delegate_->GetRect().height(),
true,
win_util::GetSectionFromProcess(windowless_buffer,
channel_->renderer_handle(), false)));
if (background_buffer) {
background_canvas_.reset(new skia::PlatformCanvas(
delegate_->GetRect().width(),
delegate_->GetRect().height(),
true,
win_util::GetSectionFromProcess(background_buffer,
channel_->renderer_handle(), false)));
}
}
#elif defined(OS_MACOSX)
void WebPluginProxy::SetWindowlessBuffer(
const TransportDIB::Handle& windowless_buffer,
const TransportDIB::Handle& background_buffer) {
// Convert the shared memory handle to a handle that works in our process,
// and then use that to create a CGContextRef.
windowless_dib_.reset(TransportDIB::Map(windowless_buffer));
background_dib_.reset(TransportDIB::Map(background_buffer));
windowless_context_.reset(CGBitmapContextCreate(
windowless_dib_->memory(),
delegate_->GetRect().width(),
delegate_->GetRect().height(),
8, 4 * delegate_->GetRect().width(),
mac_util::GetSystemColorSpace(),
kCGImageAlphaPremultipliedFirst |
kCGBitmapByteOrder32Host));
CGContextTranslateCTM(windowless_context_, 0, delegate_->GetRect().height());
CGContextScaleCTM(windowless_context_, 1, -1);
if (background_dib_.get()) {
background_context_.reset(CGBitmapContextCreate(
background_dib_->memory(),
delegate_->GetRect().width(),
delegate_->GetRect().height(),
8, 4 * delegate_->GetRect().width(),
mac_util::GetSystemColorSpace(),
kCGImageAlphaPremultipliedFirst |
kCGBitmapByteOrder32Host));
CGContextTranslateCTM(background_context_, 0,
delegate_->GetRect().height());
CGContextScaleCTM(background_context_, 1, -1);
}
static_cast<WebPluginDelegateImpl*>(delegate_)->UpdateContext(
windowless_context_);
}
#elif defined (OS_LINUX)
void WebPluginProxy::SetWindowlessBuffer(
const TransportDIB::Handle& windowless_buffer,
const TransportDIB::Handle& background_buffer) {
int width = delegate_->GetRect().width();
int height = delegate_->GetRect().height();
windowless_dib_.reset(TransportDIB::Map(windowless_buffer));
if (windowless_dib_.get()) {
windowless_canvas_.reset(windowless_dib_->GetPlatformCanvas(width, height));
} else {
// This can happen if the renderer has already destroyed the TransportDIB
// by the time we receive the handle, e.g. in case of multiple resizes.
windowless_canvas_.reset();
}
background_dib_.reset(TransportDIB::Map(background_buffer));
if (background_dib_.get()) {
background_canvas_.reset(background_dib_->GetPlatformCanvas(width, height));
} else {
background_canvas_.reset();
}
}
#endif
void WebPluginProxy::CancelDocumentLoad() {
Send(new PluginHostMsg_CancelDocumentLoad(route_id_));
}
void WebPluginProxy::InitiateHTTPRangeRequest(const char* url,
const char* range_info,
intptr_t existing_stream,
bool notify_needed,
intptr_t notify_data) {
Send(new PluginHostMsg_InitiateHTTPRangeRequest(route_id_, url,
range_info, existing_stream,
notify_needed, notify_data));
}
void WebPluginProxy::SetDeferResourceLoading(int resource_id, bool defer) {
Send(new PluginHostMsg_DeferResourceLoading(route_id_, resource_id, defer));
}
void WebPluginProxy::OnPaint(const gfx::Rect& damaged_rect) {
child_process_logging::ScopedActiveURLSetter url_setter(page_url_);
Paint(damaged_rect);
Send(new PluginHostMsg_InvalidateRect(route_id_, damaged_rect));
}
bool WebPluginProxy::IsOffTheRecord() {
return channel_->off_the_record();
}
void WebPluginProxy::ResourceClientDeleted(
WebPluginResourceClient* resource_client) {
ResourceClientMap::iterator index = resource_clients_.begin();
while (index != resource_clients_.end()) {
WebPluginResourceClient* client = (*index).second;
if (client == resource_client) {
resource_clients_.erase(index++);
} else {
index++;
}
}
}
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