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| 1 // Copyright (c) 2013 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_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_ | |
| 6 #define CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_ | |
| 7 | |
| 8 #include "base/basictypes.h" | |
| 9 #include "base/compiler_specific.h" | |
| 10 #include "base/memory/scoped_ptr.h" | |
| 11 #include "cc/output/output_surface.h" | |
| 12 #include "content/public/renderer/android/synchronous_compositor.h" | |
| 13 | |
| 14 namespace content { | |
| 15 | |
| 16 class SynchronousCompositorClient; | |
| 17 class SynchronousCompositorOutputSurfaceDelegate; | |
| 18 class WebGraphicsContext3DCommandBufferImpl; | |
| 19 | |
| 20 class SynchronousCompositorOutputSurfaceDelegate { | |
| 21 public: | |
| 22 virtual void SetContinuousInvalidate(bool enable) = 0; | |
| 23 virtual void DidCreateSynchronousOutputSurface() = 0; | |
| 24 virtual void DidDestroySynchronousOutputSurface() = 0; | |
| 25 | |
| 26 protected: | |
| 27 SynchronousCompositorOutputSurfaceDelegate() {} | |
| 28 virtual ~SynchronousCompositorOutputSurfaceDelegate() {} | |
| 29 | |
| 30 private: | |
| 31 DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorOutputSurfaceDelegate); | |
| 32 }; | |
| 33 | |
| 34 // Specialization of the output surface that adapts it to implement the | |
| 35 // content::SynchronousCompositor public API. This class effects an "inversion | |
| 36 // of control" - enabling drawing to be orchestrated by the embedding | |
| 37 // layer, instead of driven by the compositor internals - hence it holds two | |
| 38 // 'client' pointers (|client_| in the OutputSurface baseclass and |delegate_|) | |
| 39 // which represent the consumers of the two roles in plays. | |
| 40 // This class can be created only on the main thread, but then becomes pinned | |
| 41 // to a fixed thread when BindToClient is called. | |
| 42 class SynchronousCompositorOutputSurface | |
| 43 : NON_EXPORTED_BASE(public cc::OutputSurface) { | |
| 44 public: | |
| 45 explicit SynchronousCompositorOutputSurface( | |
| 46 SynchronousCompositorOutputSurfaceDelegate* delegate); | |
| 47 virtual ~SynchronousCompositorOutputSurface(); | |
| 48 | |
| 49 // OutputSurface. | |
| 50 virtual bool ForcedDrawToSoftwareDevice() const OVERRIDE; | |
| 51 virtual bool BindToClient(cc::OutputSurfaceClient* surface_client) OVERRIDE; | |
| 52 virtual void Reshape(gfx::Size size, float scale_factor) OVERRIDE; | |
| 53 virtual void SendFrameToParentCompositor(cc::CompositorFrame* frame) OVERRIDE; | |
| 54 virtual void SetNeedsBeginFrame(bool enable) OVERRIDE; | |
| 55 virtual void SwapBuffers(const cc::LatencyInfo& info) OVERRIDE; | |
| 56 | |
| 57 // Partial SynchronousCompositor API implementation. | |
| 58 bool IsHwReady(); | |
| 59 bool DemandDrawSw(SkCanvas* canvas); | |
| 60 bool DemandDrawHw(gfx::Size view_size, | |
| 61 const gfx::Transform& transform, | |
| 62 gfx::Rect clip); | |
| 63 | |
| 64 private: | |
| 65 class SoftwareDevice; | |
| 66 friend class SoftwareDevice; | |
| 67 | |
| 68 void InvokeComposite(const gfx::Transform& transform, gfx::Rect damage_area); | |
| 69 void UpdateCompositorClientSettings(); | |
| 70 void NotifyCompositorSettingsChanged(); | |
| 71 bool CalledOnValidThread() const; | |
| 72 | |
| 73 SynchronousCompositorOutputSurfaceDelegate* delegate_; | |
| 74 bool needs_begin_frame_; | |
| 75 bool did_swap_buffer_; | |
| 76 | |
| 77 // Only valid (non-NULL) during a DemandDrawSw() call. | |
| 78 SkCanvas* current_sw_canvas_; | |
| 79 | |
| 80 DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorOutputSurface); | |
| 81 }; | |
| 82 | |
| 83 } // namespace content | |
| 84 | |
| 85 #endif // CONTENT_RENDERER_ANDROID_SYNCHRONOUS_COMPOSITOR_OUTPUT_SURFACE_H_ | |
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