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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_RENDERER_CHILD_FRAME_COMPOSITING_HELPER_H_
      6 #define CONTENT_RENDERER_CHILD_FRAME_COMPOSITING_HELPER_H_
      7 
      8 #include <string>
      9 #include <vector>
     10 
     11 #include "base/memory/ref_counted.h"
     12 #include "base/memory/scoped_ptr.h"
     13 #include "base/memory/shared_memory.h"
     14 #include "cc/layers/delegated_frame_resource_collection.h"
     15 #include "content/common/content_export.h"
     16 #include "ui/gfx/size.h"
     17 
     18 namespace base {
     19 class SharedMemory;
     20 }
     21 
     22 namespace cc {
     23 class CompositorFrame;
     24 class CopyOutputResult;
     25 class Layer;
     26 class SolidColorLayer;
     27 class DelegatedFrameProvider;
     28 class DelegatedFrameResourceCollection;
     29 class DelegatedRendererLayer;
     30 }
     31 
     32 namespace blink {
     33 class WebFrame;
     34 class WebPluginContainer;
     35 class WebLayer;
     36 }
     37 
     38 namespace gfx {
     39 class Rect;
     40 class Size;
     41 }
     42 
     43 struct FrameHostMsg_CompositorFrameSwappedACK_Params;
     44 struct FrameHostMsg_BuffersSwappedACK_Params;
     45 struct FrameHostMsg_ReclaimCompositorResources_Params;
     46 
     47 namespace content {
     48 
     49 class BrowserPlugin;
     50 class BrowserPluginManager;
     51 class RenderFrameProxy;
     52 
     53 class CONTENT_EXPORT ChildFrameCompositingHelper
     54     : public base::RefCounted<ChildFrameCompositingHelper>,
     55       public cc::DelegatedFrameResourceCollectionClient {
     56  public:
     57   static ChildFrameCompositingHelper* CreateForBrowserPlugin(
     58       const base::WeakPtr<BrowserPlugin>& browser_plugin);
     59   static ChildFrameCompositingHelper* CreateForRenderFrameProxy(
     60       RenderFrameProxy* render_frame_proxy);
     61 
     62   void CopyFromCompositingSurface(int request_id,
     63                                   gfx::Rect source_rect,
     64                                   gfx::Size dest_size);
     65   void DidCommitCompositorFrame();
     66   void EnableCompositing(bool);
     67   void OnContainerDestroy();
     68   void OnCompositorFrameSwapped(scoped_ptr<cc::CompositorFrame> frame,
     69                                 int route_id,
     70                                 uint32 output_surface_id,
     71                                 int host_id,
     72                                 base::SharedMemoryHandle handle);
     73   void UpdateVisibility(bool);
     74   void ChildFrameGone();
     75 
     76   // cc::DelegatedFrameProviderClient implementation.
     77   virtual void UnusedResourcesAreAvailable() OVERRIDE;
     78   void SetContentsOpaque(bool);
     79 
     80  protected:
     81   // Friend RefCounted so that the dtor can be non-public.
     82   friend class base::RefCounted<ChildFrameCompositingHelper>;
     83 
     84  private:
     85   ChildFrameCompositingHelper(
     86       const base::WeakPtr<BrowserPlugin>& browser_plugin,
     87       blink::WebFrame* frame,
     88       RenderFrameProxy* render_frame_proxy,
     89       int host_routing_id);
     90 
     91   virtual ~ChildFrameCompositingHelper();
     92 
     93   BrowserPluginManager* GetBrowserPluginManager();
     94   blink::WebPluginContainer* GetContainer();
     95   int GetInstanceID();
     96 
     97   void SendCompositorFrameSwappedACKToBrowser(
     98       FrameHostMsg_CompositorFrameSwappedACK_Params& params);
     99   void SendReclaimCompositorResourcesToBrowser(
    100       FrameHostMsg_ReclaimCompositorResources_Params& params);
    101   void CheckSizeAndAdjustLayerProperties(const gfx::Size& new_size,
    102                                          float device_scale_factor,
    103                                          cc::Layer* layer);
    104   void SendReturnedDelegatedResources();
    105   void CopyFromCompositingSurfaceHasResult(
    106       int request_id,
    107       gfx::Size dest_size,
    108       scoped_ptr<cc::CopyOutputResult> result);
    109 
    110   int host_routing_id_;
    111   int last_route_id_;
    112   uint32 last_output_surface_id_;
    113   int last_host_id_;
    114   bool ack_pending_;
    115   bool opaque_;
    116 
    117   gfx::Size buffer_size_;
    118 
    119   // The lifetime of this weak pointer should be greater than the lifetime of
    120   // other member objects, as they may access this pointer during their
    121   // destruction.
    122   base::WeakPtr<BrowserPlugin> browser_plugin_;
    123   RenderFrameProxy* render_frame_proxy_;
    124 
    125   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection_;
    126   scoped_refptr<cc::DelegatedFrameProvider> frame_provider_;
    127 
    128   scoped_refptr<cc::SolidColorLayer> background_layer_;
    129   scoped_refptr<cc::DelegatedRendererLayer> delegated_layer_;
    130   scoped_ptr<blink::WebLayer> web_layer_;
    131   blink::WebFrame* frame_;
    132 
    133   DISALLOW_COPY_AND_ASSIGN(ChildFrameCompositingHelper);
    134 };
    135 
    136 }  // namespace content
    137 
    138 #endif  // CONTENT_RENDERER_CHILD_FRAME_COMPOSITING_HELPER_H_
    139