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 "components/view_manager/public/interfaces/surfaces.mojom.h"
  16 #include "mojo/cc/output_surface_mojo.h"
  17 #include "third_party/WebKit/public/platform/WebLayerTreeView.h"
  18
  19 namespace base {
  20 class MessageLoopProxy;
  21 }
  22
  23 namespace blink {
  24 class WebWidget;
  25 }
  26
  27 namespace cc {
  28 class LayerTreeHost;
  29 }
  30
  31 namespace mojo {
  32 class View;
  33 }
  34
  35 namespace html_viewer {
  36
  37 class WebLayerTreeViewImpl : public blink::WebLayerTreeView,
  38                              public cc::LayerTreeHostClient,
  39                              public mojo::OutputSurfaceMojoClient {
  40  public:
  41   WebLayerTreeViewImpl(
  42       scoped_refptr<base::MessageLoopProxy> compositor_message_loop_proxy,
  43       mojo::SurfacePtr surface,
  44       mojo::GpuPtr gpu_service);
  45   ~WebLayerTreeViewImpl() override;
  46
  47   void set_widget(blink::WebWidget* widget) { widget_ = widget; }
  48   void set_view(mojo::View* view) { view_ = view; }
  49
  50   // cc::LayerTreeHostClient implementation.
  51   void WillBeginMainFrame() override;
  52   void DidBeginMainFrame() override;
  53   void BeginMainFrame(const cc::BeginFrameArgs& args) override;
  54   void BeginMainFrameNotExpectedSoon() override;
  55   void Layout() override;
  56   void ApplyViewportDeltas(const gfx::Vector2dF& inner_delta,
  57                            const gfx::Vector2dF& outer_delta,
  58                            const gfx::Vector2dF& elastic_overscroll_delta,
  59                            float page_scale,
  60                            float top_controls_delta) override;
  61   void ApplyViewportDeltas(const gfx::Vector2d& scroll_delta,
  62                            float page_scale,
  63                            float top_controls_delta) override;
  64   void RequestNewOutputSurface() override;
  65   void DidFailToInitializeOutputSurface() override;
  66   void DidInitializeOutputSurface() override;
  67   void WillCommit() override;
  68   void DidCommit() override;
  69   void DidCommitAndDrawFrame() override;
  70   void DidCompleteSwapBuffers() override;
  71   void DidCompletePageScaleAnimation() override {}
  72   void RateLimitSharedMainThreadContext() override {}
  73
  74   // blink::WebLayerTreeView implementation.
  75   virtual void setRootLayer(const blink::WebLayer& layer);
  76   virtual void clearRootLayer();
  77   virtual void setViewportSize(const blink::WebSize& device_viewport_size);
  78   virtual blink::WebSize deviceViewportSize() const;
  79   virtual void setDeviceScaleFactor(float);
  80   virtual float deviceScaleFactor() const;
  81   virtual void setBackgroundColor(blink::WebColor color);
  82   virtual void setHasTransparentBackground(bool has_transparent_background);
  83   virtual void setVisible(bool visible);
  84   virtual void setPageScaleFactorAndLimits(float page_scale_factor,
  85                                            float minimum,
  86                                            float maximum);
  87   virtual void startPageScaleAnimation(const blink::WebPoint& destination,
  88                                        bool use_anchor,
  89                                        float new_page_scale,
  90                                        double duration_sec);
  91   virtual void heuristicsForGpuRasterizationUpdated(bool matches_heuristic) {}
  92   virtual void setNeedsAnimate();
  93   virtual bool commitRequested() const;
  94   virtual void didStopFlinging() {}
  95   virtual void compositeAndReadbackAsync(
  96       blink::WebCompositeAndReadbackAsyncCallback* callback) {}
  97   virtual void finishAllRendering();
  98   virtual void setDeferCommits(bool defer_commits) {}
  99   virtual void registerForAnimations(blink::WebLayer* layer);
 100   virtual void registerViewportLayers(
 101       const blink::WebLayer* overscrollElasticityLayer,
 102       const blink::WebLayer* pageScaleLayerLayer,
 103       const blink::WebLayer* innerViewportScrollLayer,
 104       const blink::WebLayer* outerViewportScrollLayer);
 105   virtual void clearViewportLayers();
 106   virtual void registerSelection(const blink::WebSelection& selection) {}
 107   virtual void clearSelection() {}
 108   virtual void setShowFPSCounter(bool) {}
 109   virtual void setShowPaintRects(bool) {}
 110   virtual void setShowDebugBorders(bool) {}
 111   virtual void setContinuousPaintingEnabled(bool) {}
 112   virtual void setShowScrollBottleneckRects(bool) {}
 113
 114   // OutputSurfaceMojoClient implementation.
 115   void DidCreateSurface(cc::SurfaceId id) override;
 116
 117  private:
 118   void DidCreateSurfaceOnMainThread(cc::SurfaceId id);
 119
 120   // widget_ and view_ will outlive us.
 121   blink::WebWidget* widget_;
 122   mojo::View* view_;
 123   scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
 124   scoped_ptr<cc::OutputSurface> output_surface_;
 125   scoped_refptr<base::SingleThreadTaskRunner>
 126       main_thread_compositor_task_runner_;
 127   base::WeakPtr<WebLayerTreeViewImpl> main_thread_bound_weak_ptr_;
 128
 129   base::WeakPtrFactory<WebLayerTreeViewImpl> weak_factory_;
 130   DISALLOW_COPY_AND_ASSIGN(WebLayerTreeViewImpl);
 131 };
 132
 133 }  // namespace html_viewer
 134
 135 #endif  // COMPONENTS_HTML_VIEWER_WEB_LAYER_TREE_VIEW_IMPL_H_