content/renderer/gpu/render_widget_compositor.h

   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_GPU_RENDER_WIDGET_COMPOSITOR_H_
   6 #define CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_
   7
   8 #include "base/callback.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "base/time/time.h"
  11 #include "base/values.h"
  12 #include "cc/input/top_controls_state.h"
  13 #include "cc/output/swap_promise.h"
  14 #include "cc/trees/layer_tree_host_client.h"
  15 #include "cc/trees/layer_tree_host_single_thread_client.h"
  16 #include "cc/trees/layer_tree_settings.h"
  17 #include "cc/trees/swap_promise_monitor.h"
  18 #include "content/common/content_export.h"
  19 #include "content/renderer/gpu/compositor_dependencies.h"
  20 #include "third_party/WebKit/public/platform/WebLayerTreeView.h"
  21 #include "third_party/skia/include/core/SkBitmap.h"
  22 #include "ui/gfx/geometry/rect.h"
  23
  24 namespace ui {
  25 struct LatencyInfo;
  26 }
  27
  28 namespace cc {
  29 class CopyOutputRequest;
  30 class InputHandler;
  31 class Layer;
  32 class LayerTreeHost;
  33 }
  34
  35 namespace content {
  36 class RenderWidget;
  37
  38 class CONTENT_EXPORT RenderWidgetCompositor
  39     : NON_EXPORTED_BASE(public blink::WebLayerTreeView),
  40       NON_EXPORTED_BASE(public cc::LayerTreeHostClient),
  41       NON_EXPORTED_BASE(public cc::LayerTreeHostSingleThreadClient) {
  42  public:
  43   // Attempt to construct and initialize a compositor instance for the widget
  44   // with the given settings. Returns NULL if initialization fails.
  45   static scoped_ptr<RenderWidgetCompositor> Create(
  46       RenderWidget* widget,
  47       CompositorDependencies* compositor_deps);
  48
  49   virtual ~RenderWidgetCompositor();
  50
  51   const base::WeakPtr<cc::InputHandler>& GetInputHandler();
  52   bool BeginMainFrameRequested() const;
  53   void SetNeedsDisplayOnAllLayers();
  54   void SetRasterizeOnlyVisibleContent();
  55   void SetNeedsRedrawRect(gfx::Rect damage_rect);
  56   // Like setNeedsRedraw but forces the frame to be drawn, without early-outs.
  57   // Redraw will be forced after the next commit
  58   void SetNeedsForcedRedraw();
  59   // Calling CreateLatencyInfoSwapPromiseMonitor() to get a scoped
  60   // LatencyInfoSwapPromiseMonitor. During the life time of the
  61   // LatencyInfoSwapPromiseMonitor, if SetNeedsCommit() or
  62   // SetNeedsUpdateLayers() is called on LayerTreeHost, the original latency
  63   // info will be turned into a LatencyInfoSwapPromise.
  64   scoped_ptr<cc::SwapPromiseMonitor> CreateLatencyInfoSwapPromiseMonitor(
  65       ui::LatencyInfo* latency);
  66   // Calling QueueSwapPromise() to directly queue a SwapPromise into
  67   // LayerTreeHost.
  68   void QueueSwapPromise(scoped_ptr<cc::SwapPromise> swap_promise);
  69   int GetLayerTreeId() const;
  70   int GetSourceFrameNumber() const;
  71   void SetNeedsUpdateLayers();
  72   void SetNeedsCommit();
  73   void NotifyInputThrottledUntilCommit();
  74   const cc::Layer* GetRootLayer() const;
  75   int ScheduleMicroBenchmark(
  76       const std::string& name,
  77       scoped_ptr<base::Value> value,
  78       const base::Callback<void(scoped_ptr<base::Value>)>& callback);
  79   bool SendMessageToMicroBenchmark(int id, scoped_ptr<base::Value> value);
  80   void StartCompositor();
  81
  82   // WebLayerTreeView implementation.
  83   virtual void setRootLayer(const blink::WebLayer& layer);
  84   virtual void clearRootLayer();
  85   virtual void setViewportSize(
  86       const blink::WebSize& unused_deprecated,
  87       const blink::WebSize& device_viewport_size);
  88   virtual void setViewportSize(const blink::WebSize& device_viewport_size);
  89   virtual blink::WebSize layoutViewportSize() const;
  90   virtual blink::WebSize deviceViewportSize() const;
  91   virtual blink::WebFloatPoint adjustEventPointForPinchZoom(
  92       const blink::WebFloatPoint& point) const;
  93   virtual void setDeviceScaleFactor(float device_scale);
  94   virtual float deviceScaleFactor() const;
  95   virtual void setBackgroundColor(blink::WebColor color);
  96   virtual void setHasTransparentBackground(bool transparent);
  97   virtual void setVisible(bool visible);
  98   virtual void setPageScaleFactorAndLimits(float page_scale_factor,
  99                                            float minimum,
 100                                            float maximum);
 101   virtual void startPageScaleAnimation(const blink::WebPoint& destination,
 102                                        bool use_anchor,
 103                                        float new_page_scale,
 104                                        double duration_sec);
 105   virtual void heuristicsForGpuRasterizationUpdated(bool matches_heuristics);
 106   virtual void setNeedsAnimate();
 107   virtual bool commitRequested() const;
 108   virtual void didStopFlinging();
 109   virtual void compositeAndReadbackAsync(
 110       blink::WebCompositeAndReadbackAsyncCallback* callback);
 111   virtual void finishAllRendering();
 112   virtual void setDeferCommits(bool defer_commits);
 113   virtual void registerForAnimations(blink::WebLayer* layer);
 114   virtual void registerViewportLayers(
 115       const blink::WebLayer* overscrollElasticityLayer,
 116       const blink::WebLayer* pageScaleLayer,
 117       const blink::WebLayer* innerViewportScrollLayer,
 118       const blink::WebLayer* outerViewportScrollLayer) override;
 119   virtual void clearViewportLayers() override;
 120   virtual void registerSelection(const blink::WebSelectionBound& start,
 121                                  const blink::WebSelectionBound& end) override;
 122   virtual void clearSelection() override;
 123   virtual void setShowFPSCounter(bool show);
 124   virtual void setShowPaintRects(bool show);
 125   virtual void setShowDebugBorders(bool show);
 126   virtual void setContinuousPaintingEnabled(bool enabled);
 127   virtual void setShowScrollBottleneckRects(bool show);
 128
 129   virtual void updateTopControlsState(blink::WebTopControlsState constraints,
 130                               blink::WebTopControlsState current,
 131                               bool animate);
 132   virtual void setTopControlsHeight(float height, bool shrink);
 133   virtual void setTopControlsShownRatio(float);
 134
 135   // cc::LayerTreeHostClient implementation.
 136   void WillBeginMainFrame() override;
 137   void DidBeginMainFrame() override;
 138   void BeginMainFrame(const cc::BeginFrameArgs& args) override;
 139   void BeginMainFrameNotExpectedSoon() override;
 140   void Layout() override;
 141   void ApplyViewportDeltas(const gfx::Vector2dF& inner_delta,
 142                            const gfx::Vector2dF& outer_delta,
 143                            const gfx::Vector2dF& elastic_overscroll_delta,
 144                            float page_scale,
 145                            float top_controls_delta) override;
 146   void ApplyViewportDeltas(const gfx::Vector2d& scroll_delta,
 147                            float page_scale,
 148                            float top_controls_delta) override;
 149   void RequestNewOutputSurface() override;
 150   void DidInitializeOutputSurface() override;
 151   void DidFailToInitializeOutputSurface() override;
 152   void WillCommit() override;
 153   void DidCommit() override;
 154   void DidCommitAndDrawFrame() override;
 155   void DidCompleteSwapBuffers() override;
 156   void DidCompletePageScaleAnimation() override;
 157   void RateLimitSharedMainThreadContext() override;
 158
 159   // cc::LayerTreeHostSingleThreadClient implementation.
 160   void ScheduleAnimation() override;
 161   void DidPostSwapBuffers() override;
 162   void DidAbortSwapBuffers() override;
 163
 164   enum {
 165    OUTPUT_SURFACE_RETRIES_BEFORE_FALLBACK = 4,
 166    MAX_OUTPUT_SURFACE_RETRIES = 5,
 167   };
 168
 169  protected:
 170   RenderWidgetCompositor(RenderWidget* widget,
 171                          CompositorDependencies* compositor_deps);
 172
 173   void Initialize();
 174   cc::LayerTreeHost* layer_tree_host() { return layer_tree_host_.get(); }
 175
 176  private:
 177   int num_failed_recreate_attempts_;
 178   RenderWidget* widget_;
 179   CompositorDependencies* compositor_deps_;
 180   scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
 181
 182   scoped_ptr<cc::CopyOutputRequest> temporary_copy_output_request_;
 183
 184   base::WeakPtrFactory<RenderWidgetCompositor> weak_factory_;
 185 };
 186
 187 }  // namespace content
 188
 189 #endif  // CONTENT_RENDERER_GPU_RENDER_WIDGET_COMPOSITOR_H_