android_webview/browser/hardware_renderer.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 ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_
   6 #define ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_
   7
   8 #include "android_webview/browser/shared_renderer_state.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "cc/layers/delegated_frame_resource_collection.h"
  11 #include "cc/trees/layer_tree_host_client.h"
  12 #include "cc/trees/layer_tree_host_single_thread_client.h"
  13
  14 struct AwDrawGLInfo;
  15
  16 namespace cc {
  17 class DelegatedFrameProvider;
  18 class DelegatedRendererLayer;
  19 class Layer;
  20 class LayerTreeHost;
  21 }
  22
  23 namespace android_webview {
  24
  25 class AwGLSurface;
  26 class ChildFrame;
  27 class ParentOutputSurface;
  28
  29 class HardwareRenderer : public cc::LayerTreeHostClient,
  30                          public cc::LayerTreeHostSingleThreadClient,
  31                          public cc::DelegatedFrameResourceCollectionClient {
  32  public:
  33   explicit HardwareRenderer(SharedRendererState* state);
  34   ~HardwareRenderer() override;
  35
  36   void DrawGL(bool stencil_enabled,
  37               int framebuffer_binding_ext,
  38               AwDrawGLInfo* draw_info);
  39   void CommitFrame();
  40
  41   // cc::LayerTreeHostClient overrides.
  42   void WillBeginMainFrame() override {}
  43   void DidBeginMainFrame() override;
  44   void BeginMainFrame(const cc::BeginFrameArgs& args) override {}
  45   void BeginMainFrameNotExpectedSoon() override {}
  46   void Layout() override {}
  47   void ApplyViewportDeltas(const gfx::Vector2dF& inner_delta,
  48                            const gfx::Vector2dF& outer_delta,
  49                            const gfx::Vector2dF& elastic_overscroll_delta,
  50                            float page_scale,
  51                            float top_controls_delta) override {}
  52   void ApplyViewportDeltas(const gfx::Vector2d& scroll_delta,
  53                            float page_scale,
  54                            float top_controls_delta) override {}
  55   void RequestNewOutputSurface() override;
  56   void DidInitializeOutputSurface() override {}
  57   void DidFailToInitializeOutputSurface() override;
  58   void WillCommit() override {}
  59   void DidCommit() override {}
  60   void DidCommitAndDrawFrame() override {}
  61   void DidCompleteSwapBuffers() override {}
  62   void DidCompletePageScaleAnimation() override {}
  63
  64   // cc::LayerTreeHostSingleThreadClient overrides.
  65   void DidPostSwapBuffers() override {}
  66   void DidAbortSwapBuffers() override {}
  67
  68   // cc::DelegatedFrameResourceCollectionClient overrides.
  69   void UnusedResourcesAreAvailable() override;
  70
  71  private:
  72   SharedRendererState* shared_renderer_state_;
  73
  74   typedef void* EGLContext;
  75   EGLContext last_egl_context_;
  76
  77   // Information about last delegated frame.
  78   gfx::Size frame_size_;
  79
  80   // Infromation from UI on last commit.
  81   gfx::Vector2d scroll_offset_;
  82
  83   // Information from draw.
  84   gfx::Size viewport_;
  85   gfx::Rect clip_;
  86   bool stencil_enabled_;
  87   bool viewport_clip_valid_for_dcheck_;
  88
  89   scoped_ptr<ChildFrame> child_frame_;
  90
  91   scoped_refptr<AwGLSurface> gl_surface_;
  92
  93   scoped_ptr<cc::LayerTreeHost> layer_tree_host_;
  94   scoped_refptr<cc::Layer> root_layer_;
  95
  96   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection_;
  97   scoped_refptr<cc::DelegatedFrameProvider> frame_provider_;
  98   scoped_refptr<cc::DelegatedRendererLayer> delegated_layer_;
  99
 100   // This is owned indirectly by |layer_tree_host_|.
 101   ParentOutputSurface* output_surface_;
 102
 103   DISALLOW_COPY_AND_ASSIGN(HardwareRenderer);
 104 };
 105
 106 }  // namespace android_webview
 107
 108 #endif  // ANDROID_WEBVIEW_BROWSER_HARDWARE_RENDERER_H_