components/html_viewer/web_layer_tree_view_impl.h

   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 COMPONENTS_HTML_VIEWER_WEB_LAYER_TREE_VIEW_IMPL_H_
   6 #define COMPONENTS_HTML_VIEWER_WEB_LAYER_TREE_VIEW_IMPL_H_
   7
   8 #include "base/macros.h"
   9 #include "base/memory/ref_counted.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "base/memory/weak_ptr.h"
  12 #include "base/single_thread_task_runner.h"
  13 #include "cc/trees/layer_tree_host_client.h"
  14 #include "components/view_manager/public/interfaces/gpu.mojom.h"
  15 #include "mojo/cc/output_surface_mojo.h"
  16 #include "third_party/WebKit/public/platform/WebLayerTreeView.h"
  17
  18 namespace base {
  19 class SingleThreadTaskRunner;
  20 }
  21
  22 namespace blink {
  23 class WebWidget;
  24 }
  25
  26 namespace cc {
  27 class LayerTreeHost;
  28 class TaskGraphRunner;
  29 }
  30
  31 namespace gpu {
  32 class GpuMemoryBufferManager;
  33 }
  34
  35 namespace mojo {
  36 class View;
  37 }
  38
  39 namespace html_viewer {
  40
  41 class WebLayerTreeViewImpl : public blink::WebLayerTreeView,
  42                              public cc::LayerTreeHostClient {
  43  public:
  44   WebLayerTreeViewImpl(
  45       scoped_refptr<base::SingleThreadTaskRunner> compositor_task_runner,
  46       gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
  47       cc::TaskGraphRunner* task_graph_runner);
  48   ~WebLayerTreeViewImpl() override;
  49
  50   void Initialize(mojo::GpuPtr gpu_service,
  51                   mojo::View* view,
  52                   blink::WebWidget* widget);
  53
  54   // cc::LayerTreeHostClient implementation.
  55   void WillBeginMainFrame() override;
  56   void DidBeginMainFrame() override;
  57   void BeginMainFrame(const cc::BeginFrameArgs& args) override;
  58   void BeginMainFrameNotExpectedSoon() override;
  59   void Layout() override;
  60   void ApplyViewportDeltas(const gfx::Vector2dF& inner_delta,
  61                            const gfx::Vector2dF& outer_delta,
  62                            const gfx::Vector2dF& elastic_overscroll_delta,
  63                            float page_scale,
  64                            float top_controls_delta) override;
  65   void RequestNewOutputSurface() override;
  66   void DidFailToInitializeOutputSurface() override;
  67   void DidInitializeOutputSurface() override;
  68   void WillCommit() override;
  69   void DidCommit() override;
  70   void DidCommitAndDrawFrame() override;
  71   void DidCompleteSwapBuffers() override;
  72   void DidCompletePageScaleAnimation() override {}
  73   void RateLimitSharedMainThreadContext() override {}
  74   void RecordFrameTimingEvents(
  75       scoped_ptr<cc::FrameTimingTracker::CompositeTimingSet> composite_events,
  76       scoped_ptr<cc::FrameTimingTracker::MainFrameTimingSet> main_frame_events)
  77       override {}
  78
  79   // blink::WebLayerTreeView implementation.
  80   virtual void setRootLayer(const blink::WebLayer& layer);
  81   virtual void clearRootLayer();
  82   virtual void setViewportSize(const blink::WebSize& device_viewport_size);
  83   virtual blink::WebSize deviceViewportSize() const;
  84   virtual void setDeviceScaleFactor(float);
  85   virtual float deviceScaleFactor() const;
  86   virtual void setBackgroundColor(blink::WebColor color);
  87   virtual void setHasTransparentBackground(bool has_transparent_background);
  88   virtual void setVisible(bool visible);
  89   virtual void setPageScaleFactorAndLimits(float page_scale_factor,
  90                                            float minimum,
  91                                            float maximum);
  92   virtual void startPageScaleAnimation(const blink::WebPoint& destination,
  93                                        bool use_anchor,
  94                                        float new_page_scale,
  95                                        double duration_sec);
  96   virtual void heuristicsForGpuRasterizationUpdated(bool matches_heuristic) {}
  97   virtual void setNeedsAnimate();
  98   virtual void didStopFlinging() {}
  99   virtual void compositeAndReadbackAsync(
 100       blink::WebCompositeAndReadbackAsyncCallback* callback) {}
 101   virtual void finishAllRendering();
 102   virtual void setDeferCommits(bool defer_commits) {}
 103   virtual void registerForAnimations(blink::WebLayer* layer);
 104   virtual void registerViewportLayers(
 105       const blink::WebLayer* overscrollElasticityLayer,
 106       const blink::WebLayer* pageScaleLayerLayer,
 107       const blink::WebLayer* innerViewportScrollLayer,
 108       const blink::WebLayer* outerViewportScrollLayer);
 109   virtual void clearViewportLayers();
 110   virtual void registerSelection(const blink::WebSelection& selection) {}
 111   virtual void clearSelection() {}
 112   virtual void setShowFPSCounter(bool) {}
 113   virtual void setShowPaintRects(bool) {}
 114   virtual void setShowDebugBorders(bool) {}
 115   virtual void setContinuousPaintingEnabled(bool) {}
 116   virtual void setShowScrollBottleneckRects(bool) {}
 117
 118  private:
 119   // widget_ and view_ will outlive us.
 120   blink::WebWidget* widget_;
 121   mojo::View* view_;
 122   scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
 123   scoped_ptr<cc::OutputSurface> output_surface_;
 124   scoped_refptr<base::SingleThreadTaskRunner>
 125       main_thread_compositor_task_runner_;
 126   base::WeakPtr<WebLayerTreeViewImpl> main_thread_bound_weak_ptr_;
 127
 128   base::WeakPtrFactory<WebLayerTreeViewImpl> weak_factory_;
 129   DISALLOW_COPY_AND_ASSIGN(WebLayerTreeViewImpl);
 130 };
 131
 132 }  // namespace html_viewer
 133
 134 #endif  // COMPONENTS_HTML_VIEWER_WEB_LAYER_TREE_VIEW_IMPL_H_