| // 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 "content/plugin/webplugin_proxy.h" |
| |
| #include "build/build_config.h" |
| |
| #include "base/bind.h" |
| #include "base/lazy_instance.h" |
| #include "content/child/npapi/npobject_proxy.h" |
| #include "content/child/npapi/npobject_util.h" |
| #include "content/child/npapi/webplugin_delegate_impl.h" |
| #include "content/child/plugin_messages.h" |
| #include "content/plugin/plugin_channel.h" |
| #include "content/plugin/plugin_thread.h" |
| #include "content/public/common/content_client.h" |
| #include "skia/ext/platform_canvas.h" |
| #include "third_party/WebKit/public/web/WebBindings.h" |
| #include "ui/gfx/canvas.h" |
| #include "url/url_constants.h" |
| |
| #if defined(OS_MACOSX) |
| #include "base/mac/mac_util.h" |
| #include "base/mac/scoped_cftyperef.h" |
| #include "content/plugin/webplugin_accelerated_surface_proxy_mac.h" |
| #endif |
| |
| #if defined(OS_WIN) |
| #include "content/common/plugin_process_messages.h" |
| #include "content/public/common/sandbox_init.h" |
| #endif |
| |
| using blink::WebBindings; |
| |
| namespace content { |
| |
| WebPluginProxy::SharedTransportDIB::SharedTransportDIB(TransportDIB* dib) |
| : dib_(dib) { |
| } |
| |
| WebPluginProxy::SharedTransportDIB::~SharedTransportDIB() { |
| } |
| |
| WebPluginProxy::WebPluginProxy( |
| PluginChannel* channel, |
| int route_id, |
| const GURL& page_url, |
| int host_render_view_routing_id) |
| : channel_(channel), |
| route_id_(route_id), |
| window_npobject_(NULL), |
| plugin_element_(NULL), |
| delegate_(NULL), |
| waiting_for_paint_(false), |
| page_url_(page_url), |
| windowless_buffer_index_(0), |
| host_render_view_routing_id_(host_render_view_routing_id), |
| weak_factory_(this) { |
| } |
| |
| WebPluginProxy::~WebPluginProxy() { |
| #if defined(OS_MACOSX) |
| // Destroy the surface early, since it may send messages during cleanup. |
| if (accelerated_surface_) |
| accelerated_surface_.reset(); |
| #endif |
| |
| if (plugin_element_) |
| WebBindings::releaseObject(plugin_element_); |
| if (window_npobject_) |
| WebBindings::releaseObject(window_npobject_); |
| } |
| |
| bool WebPluginProxy::Send(IPC::Message* msg) { |
| return channel_->Send(msg); |
| } |
| |
| 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) |
| // If this is a Core Animation plugin, all we need to do is inform the |
| // delegate. |
| if (!windowless_context()) { |
| delegate_->PluginDidInvalidate(); |
| return; |
| } |
| |
| // 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)); |
| plugin_rect.Intersect(rect); |
| const gfx::Rect invalidate_rect(plugin_rect); |
| #else |
| const gfx::Rect invalidate_rect(rect); |
| #endif |
| 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 (damaged_rect_.IsEmpty() || |
| !delegate_->GetClipRect().Intersects(damaged_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. |
| base::MessageLoop::current()->PostTask( |
| FROM_HERE, |
| base::Bind(&WebPluginProxy::OnPaint, |
| weak_factory_.GetWeakPtr(), |
| damaged_rect_)); |
| damaged_rect_ = gfx::Rect(); |
| } |
| } |
| |
| NPObject* WebPluginProxy::GetWindowScriptNPObject() { |
| if (window_npobject_) |
| return window_npobject_; |
| |
| int npobject_route_id = channel_->GenerateRouteID(); |
| bool success = false; |
| Send(new PluginHostMsg_GetWindowScriptNPObject( |
| route_id_, npobject_route_id, &success)); |
| if (!success) |
| return NULL; |
| |
| // PluginChannel creates a dummy owner identifier for unknown owners, so |
| // use that. |
| NPP owner = channel_->GetExistingNPObjectOwner(MSG_ROUTING_NONE); |
| |
| window_npobject_ = NPObjectProxy::Create(channel_.get(), |
| npobject_route_id, |
| host_render_view_routing_id_, |
| page_url_, |
| owner); |
| |
| return window_npobject_; |
| } |
| |
| NPObject* WebPluginProxy::GetPluginElement() { |
| if (plugin_element_) |
| return plugin_element_; |
| |
| int npobject_route_id = channel_->GenerateRouteID(); |
| bool success = false; |
| Send(new PluginHostMsg_GetPluginElement(route_id_, npobject_route_id, |
| &success)); |
| if (!success) |
| return NULL; |
| |
| // PluginChannel creates a dummy owner identifier for unknown owners, so |
| // use that. |
| NPP owner = channel_->GetExistingNPObjectOwner(MSG_ROUTING_NONE); |
| |
| plugin_element_ = NPObjectProxy::Create(channel_.get(), |
| npobject_route_id, |
| host_render_view_routing_id_, |
| page_url_, |
| owner); |
| |
| return plugin_element_; |
| } |
| |
| bool WebPluginProxy::FindProxyForUrl(const GURL& url, std::string* proxy_list) { |
| bool result = false; |
| Send(new PluginHostMsg_ResolveProxy(route_id_, url, &result, proxy_list)); |
| return result; |
| } |
| |
| void WebPluginProxy::SetCookie(const GURL& url, |
| const GURL& first_party_for_cookies, |
| const std::string& cookie) { |
| Send(new PluginHostMsg_SetCookie(route_id_, url, |
| first_party_for_cookies, cookie)); |
| } |
| |
| std::string WebPluginProxy::GetCookies(const GURL& url, |
| const GURL& first_party_for_cookies) { |
| std::string cookies; |
| Send(new PluginHostMsg_GetCookies(route_id_, url, |
| first_party_for_cookies, &cookies)); |
| |
| return cookies; |
| } |
| |
| 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::Paint(const gfx::Rect& rect) { |
| #if defined(OS_MACOSX) |
| if (!windowless_context()) |
| return; |
| #else |
| if (!windowless_canvas() || !windowless_canvas()->getDevice()) |
| 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().OffsetFromOrigin()); |
| #if defined(OS_MACOSX) |
| CGContextSaveGState(windowless_context()); |
| // It is possible for windowless_contexts_ to change during plugin painting |
| // (since the plugin can make a synchronous call during paint event handling), |
| // in which case we don't want to try to restore later. Not an owning ref |
| // since owning the ref without owning the shared backing memory doesn't make |
| // sense, so this should only be used for pointer comparisons. |
| CGContextRef saved_context_weak = windowless_context(); |
| // We also save the buffer index for the comparison because if we flip buffers |
| // but haven't reallocated them then we do need to restore the context because |
| // it is going to continue to be used. |
| int saved_index = windowless_buffer_index_; |
| |
| CGContextClipToRect(windowless_context(), rect.ToCGRect()); |
| // TODO(caryclark): This is a temporary workaround to allow the Darwin / Skia |
| // port to share code with the Darwin / CG port. All ports will eventually use |
| // the common code below. |
| delegate_->CGPaint(windowless_context(), rect); |
| if (windowless_contexts_[saved_index].get() == saved_context_weak) |
| CGContextRestoreGState(windowless_contexts_[saved_index]); |
| #else |
| // See above comment about windowless_context_ changing. |
| // http::/crbug.com/139462 |
| skia::RefPtr<SkCanvas> saved_canvas = windowless_canvas(); |
| |
| saved_canvas->save(); |
| |
| // The given clip rect is relative to the plugin coordinate system. |
| SkRect sk_rect = { SkIntToScalar(rect.x()), |
| SkIntToScalar(rect.y()), |
| SkIntToScalar(rect.right()), |
| SkIntToScalar(rect.bottom()) }; |
| saved_canvas->clipRect(sk_rect); |
| |
| // Fill a transparent value so that if the plugin supports transparency that |
| // will work. |
| saved_canvas->drawColor(SkColorSetARGB(0, 0, 0, 0), SkXfermode::kSrc_Mode); |
| |
| // Bring the windowless canvas into the window coordinate system, which is |
| // how the plugin expects to draw (since the windowless API was originally |
| // designed just for scribbling over the web page). |
| saved_canvas->translate(SkIntToScalar(-delegate_->GetRect().x()), |
| SkIntToScalar(-delegate_->GetRect().y())); |
| |
| // Before we send the invalidate, paint so that renderer uses the updated |
| // bitmap. |
| delegate_->Paint(saved_canvas.get(), offset_rect); |
| |
| saved_canvas->restore(); |
| #endif |
| } |
| |
| void WebPluginProxy::UpdateGeometry( |
| const gfx::Rect& window_rect, |
| const gfx::Rect& clip_rect, |
| const TransportDIB::Handle& windowless_buffer0, |
| const TransportDIB::Handle& windowless_buffer1, |
| int windowless_buffer_index) { |
| gfx::Rect old = delegate_->GetRect(); |
| gfx::Rect old_clip_rect = delegate_->GetClipRect(); |
| |
| // Update the buffers before doing anything that could call into plugin code, |
| // so that we don't process buffer changes out of order if plugins make |
| // synchronous calls that lead to nested UpdateGeometry calls. |
| if (TransportDIB::is_valid_handle(windowless_buffer0)) { |
| // The plugin's rect changed, so now we have new buffers to draw into. |
| SetWindowlessBuffers(windowless_buffer0, |
| windowless_buffer1, |
| window_rect); |
| } |
| |
| DCHECK(0 <= windowless_buffer_index && windowless_buffer_index <= 1); |
| windowless_buffer_index_ = windowless_buffer_index; |
| |
| #if defined(OS_MACOSX) |
| delegate_->UpdateGeometryAndContext( |
| window_rect, clip_rect, windowless_context()); |
| #else |
| delegate_->UpdateGeometry(window_rect, clip_rect); |
| #endif |
| |
| // Send over any pending invalidates which occured when the plugin was |
| // off screen. |
| if (!clip_rect.IsEmpty() && !damaged_rect_.IsEmpty()) { |
| InvalidateRect(damaged_rect_); |
| } |
| } |
| |
| #if defined(OS_WIN) |
| |
| void WebPluginProxy::CreateCanvasFromHandle( |
| const TransportDIB::Handle& dib_handle, |
| const gfx::Rect& window_rect, |
| skia::RefPtr<SkCanvas>* canvas) { |
| *canvas = skia::AdoptRef(skia::CreatePlatformCanvas( |
| window_rect.width(), window_rect.height(), true, dib_handle.GetHandle(), |
| skia::RETURN_NULL_ON_FAILURE)); |
| // The canvas does not own the section so we need to close it now. |
| dib_handle.Close(); |
| } |
| |
| void WebPluginProxy::SetWindowlessBuffers( |
| const TransportDIB::Handle& windowless_buffer0, |
| const TransportDIB::Handle& windowless_buffer1, |
| const gfx::Rect& window_rect) { |
| CreateCanvasFromHandle(windowless_buffer0, |
| window_rect, |
| &windowless_canvases_[0]); |
| if (!windowless_canvases_[0]) { |
| windowless_canvases_[1].clear(); |
| return; |
| } |
| CreateCanvasFromHandle(windowless_buffer1, |
| window_rect, |
| &windowless_canvases_[1]); |
| if (!windowless_canvases_[1]) { |
| windowless_canvases_[0].clear(); |
| return; |
| } |
| } |
| |
| #elif defined(OS_MACOSX) |
| |
| void WebPluginProxy::CreateDIBAndCGContextFromHandle( |
| const TransportDIB::Handle& dib_handle, |
| const gfx::Rect& window_rect, |
| scoped_ptr<TransportDIB>* dib_out, |
| base::ScopedCFTypeRef<CGContextRef>* cg_context_out) { |
| // Convert the shared memory handle to a handle that works in our process, |
| // and then use that to create a CGContextRef. |
| TransportDIB* dib = TransportDIB::Map(dib_handle); |
| CGContextRef cg_context = NULL; |
| if (dib) { |
| cg_context = CGBitmapContextCreate( |
| dib->memory(), |
| window_rect.width(), |
| window_rect.height(), |
| 8, |
| 4 * window_rect.width(), |
| base::mac::GetSystemColorSpace(), |
| kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host); |
| CGContextTranslateCTM(cg_context, 0, window_rect.height()); |
| CGContextScaleCTM(cg_context, 1, -1); |
| } |
| dib_out->reset(dib); |
| cg_context_out->reset(cg_context); |
| } |
| |
| void WebPluginProxy::SetWindowlessBuffers( |
| const TransportDIB::Handle& windowless_buffer0, |
| const TransportDIB::Handle& windowless_buffer1, |
| const gfx::Rect& window_rect) { |
| CreateDIBAndCGContextFromHandle(windowless_buffer0, |
| window_rect, |
| &windowless_dibs_[0], |
| &windowless_contexts_[0]); |
| CreateDIBAndCGContextFromHandle(windowless_buffer1, |
| window_rect, |
| &windowless_dibs_[1], |
| &windowless_contexts_[1]); |
| } |
| |
| #else |
| |
| void WebPluginProxy::SetWindowlessBuffers( |
| const TransportDIB::Handle& windowless_buffer0, |
| const TransportDIB::Handle& windowless_buffer1, |
| const gfx::Rect& window_rect) { |
| NOTIMPLEMENTED(); |
| } |
| |
| #endif |
| |
| void WebPluginProxy::CancelDocumentLoad() { |
| Send(new PluginHostMsg_CancelDocumentLoad(route_id_)); |
| } |
| |
| void WebPluginProxy::DidStartLoading() { |
| Send(new PluginHostMsg_DidStartLoading(route_id_)); |
| } |
| |
| void WebPluginProxy::DidStopLoading() { |
| Send(new PluginHostMsg_DidStopLoading(route_id_)); |
| } |
| |
| #if defined(OS_MACOSX) |
| void WebPluginProxy::FocusChanged(bool focused) { |
| IPC::Message* msg = new PluginHostMsg_FocusChanged(route_id_, focused); |
| Send(msg); |
| } |
| |
| void WebPluginProxy::StartIme() { |
| IPC::Message* msg = new PluginHostMsg_StartIme(route_id_); |
| // This message can be sent during event-handling, and needs to be delivered |
| // within that context. |
| msg->set_unblock(true); |
| Send(msg); |
| } |
| |
| WebPluginAcceleratedSurface* WebPluginProxy::GetAcceleratedSurface( |
| gfx::GpuPreference gpu_preference) { |
| if (!accelerated_surface_) |
| accelerated_surface_.reset( |
| WebPluginAcceleratedSurfaceProxy::Create(this, gpu_preference)); |
| return accelerated_surface_.get(); |
| } |
| |
| void WebPluginProxy::AcceleratedPluginEnabledRendering() { |
| Send(new PluginHostMsg_AcceleratedPluginEnabledRendering(route_id_)); |
| } |
| |
| void WebPluginProxy::AcceleratedPluginAllocatedIOSurface(int32_t width, |
| int32_t height, |
| uint32_t surface_id) { |
| Send(new PluginHostMsg_AcceleratedPluginAllocatedIOSurface( |
| route_id_, width, height, surface_id)); |
| } |
| |
| void WebPluginProxy::AcceleratedPluginSwappedIOSurface() { |
| Send(new PluginHostMsg_AcceleratedPluginSwappedIOSurface( |
| route_id_)); |
| } |
| #endif |
| |
| void WebPluginProxy::OnPaint(const gfx::Rect& damaged_rect) { |
| GetContentClient()->SetActiveURL(page_url_); |
| |
| Paint(damaged_rect); |
| Send(new PluginHostMsg_InvalidateRect(route_id_, damaged_rect)); |
| } |
| |
| bool WebPluginProxy::IsOffTheRecord() { |
| return channel_->incognito(); |
| } |
| |
| } // namespace content |