mojo/services/html_viewer/weblayertreeview_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 MOJO_SERVICES_HTML_VIEWER_WEBLAYERTREEVIEW_IMPL_H_
   6 #define MOJO_SERVICES_HTML_VIEWER_WEBLAYERTREEVIEW_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 "mojo/cc/output_surface_mojo.h"
  15 #include "mojo/services/gpu/public/interfaces/gpu.mojom.h"
  16 #include "mojo/services/surfaces/public/interfaces/surfaces_service.mojom.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::SurfacesServicePtr surfaces_service,
  44       mojo::GpuPtr gpu_service);
  45   virtual ~WebLayerTreeViewImpl();
  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(int frame_id) override;
  52   void DidBeginMainFrame() override;
  53   void BeginMainFrame(const cc::BeginFrameArgs& args) override;
  54   void Layout() override;
  55   void ApplyViewportDeltas(const gfx::Vector2d& inner_delta,
  56                            const gfx::Vector2d& outer_delta,
  57                            const gfx::Vector2dF& elastic_overscroll_delta,
  58                            float page_scale,
  59                            float top_controls_delta) override;
  60   void ApplyViewportDeltas(const gfx::Vector2d& scroll_delta,
  61                            float page_scale,
  62                            float top_controls_delta) override;
  63   void RequestNewOutputSurface() override;
  64   void DidFailToInitializeOutputSurface() override;
  65   void DidInitializeOutputSurface() override;
  66   void WillCommit() override;
  67   void DidCommit() override;
  68   void DidCommitAndDrawFrame() override;
  69   void DidCompleteSwapBuffers() override;
  70   void RateLimitSharedMainThreadContext() override {}
  71
  72   // blink::WebLayerTreeView implementation.
  73   virtual void setRootLayer(const blink::WebLayer& layer);
  74   virtual void clearRootLayer();
  75   virtual void setViewportSize(const blink::WebSize& device_viewport_size);
  76   virtual blink::WebSize deviceViewportSize() const;
  77   virtual void setDeviceScaleFactor(float);
  78   virtual float deviceScaleFactor() const;
  79   virtual void setBackgroundColor(blink::WebColor color);
  80   virtual void setHasTransparentBackground(bool has_transparent_background);
  81   virtual void setOverhangBitmap(const SkBitmap& bitmap);
  82   virtual void setVisible(bool visible);
  83   virtual void setPageScaleFactorAndLimits(float page_scale_factor,
  84                                            float minimum,
  85                                            float maximum);
  86   virtual void startPageScaleAnimation(const blink::WebPoint& destination,
  87                                        bool use_anchor,
  88                                        float new_page_scale,
  89                                        double duration_sec);
  90   virtual void heuristicsForGpuRasterizationUpdated(bool matches_heuristic) {}
  91   virtual void setTopControlsContentOffset(float offset) {}
  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::WebSelectionBound& start,
 107                                  const blink::WebSelectionBound& end) {}
 108   virtual void clearSelection() {}
 109   virtual void setShowFPSCounter(bool) {}
 110   virtual void setShowPaintRects(bool) {}
 111   virtual void setShowDebugBorders(bool) {}
 112   virtual void setContinuousPaintingEnabled(bool) {}
 113   virtual void setShowScrollBottleneckRects(bool) {}
 114
 115   // OutputSurfaceMojoClient implementation.
 116   void DidCreateSurface(cc::SurfaceId id) override;
 117
 118  private:
 119   void OnSurfaceConnectionCreated(mojo::SurfacePtr surface,
 120                                   uint32_t id_namespace);
 121   void DidCreateSurfaceOnMainThread(cc::SurfaceId id);
 122
 123   // widget_ and view_ will outlive us.
 124   blink::WebWidget* widget_;
 125   mojo::View* view_;
 126   scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
 127   mojo::SurfacesServicePtr surfaces_service_;
 128   scoped_ptr<cc::OutputSurface> output_surface_;
 129   mojo::GpuPtr gpu_service_;
 130   scoped_refptr<base::SingleThreadTaskRunner>
 131       main_thread_compositor_task_runner_;
 132   base::WeakPtr<WebLayerTreeViewImpl> main_thread_bound_weak_ptr_;
 133
 134   base::WeakPtrFactory<WebLayerTreeViewImpl> weak_factory_;
 135   DISALLOW_COPY_AND_ASSIGN(WebLayerTreeViewImpl);
 136 };
 137
 138 }  // namespace html_viewer
 139
 140 #endif  // MOJO_SERVICES_HTML_VIEWER_WEBLAYERTREEVIEW_IMPL_H_