Add overscroll edge effect animations for Android.

content/browser/renderer_host/render_widget_host_view_android.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_
 
 #include <map>
 #include <queue>
 
@@ skipping 25 matching lines @@
 }
 
 namespace WebKit {
 class WebExternalTextureLayer;
 class WebTouchEvent;
 class WebMouseEvent;
 }
 
 namespace content {
 class ContentViewCoreImpl;
+class OverscrollGlow;
 class RenderWidgetHost;
 class RenderWidgetHostImpl;
 class SurfaceTextureTransportClient;
 struct NativeWebKeyboardEvent;
 
 // -----------------------------------------------------------------------------
 // See comments in render_widget_host_view.h about this class and its members.
 // -----------------------------------------------------------------------------
 class RenderWidgetHostViewAndroid
     : public RenderWidgetHostViewBase,
@@ skipping 89 matching lines @@
   virtual InputEventAckState FilterInputEvent(
       const WebKit::WebInputEvent& input_event) OVERRIDE;
   virtual void OnAccessibilityNotifications(
       const std::vector<AccessibilityHostMsg_NotificationParams>&
           params) OVERRIDE;
   virtual bool LockMouse() OVERRIDE;
   virtual void UnlockMouse() OVERRIDE;
   virtual void HasTouchEventHandlers(bool need_touch_events) OVERRIDE;
   virtual void OnSwapCompositorFrame(
       scoped_ptr<cc::CompositorFrame> frame) OVERRIDE;
+  virtual void OnOverscrolled(const gfx::Vector2dF& accumulated_overscroll,
+                              const gfx::Vector2dF& current_fling_velocity)
+                                  OVERRIDE;
   virtual void ShowDisambiguationPopup(const gfx::Rect& target_rect,
                                        const SkBitmap& zoomed_bitmap) OVERRIDE;
   virtual SmoothScrollGesture* CreateSmoothScrollGesture(
       bool scroll_down, int pixels_to_scroll, int mouse_event_x,
       int mouse_event_y) OVERRIDE;
 
   // cc::TextureLayerClient implementation.
   virtual unsigned PrepareTexture(cc::ResourceUpdateQueue* queue) OVERRIDE;
   virtual WebKit::WebGraphicsContext3D* Context3d() OVERRIDE;
   virtual bool PrepareTextureMailbox(cc::TextureMailbox* mailbox) OVERRIDE;
@@ skipping 26 matching lines @@
   bool HasValidFrame() const;
 
   // Select all text between the given coordinates.
   void SelectRange(const gfx::Point& start, const gfx::Point& end);
 
   void MoveCaret(const gfx::Point& point);
 
   void RequestContentClipping(const gfx::Rect& clipping,
                               const gfx::Size& content_size);
 
+  // Returns true when animation ticks are still needed. This avoids a separate
+  // round-trip for requesting follow-up animation.
+  bool Animate(base::TimeTicks frame_time);
+
  private:
   void BuffersSwapped(const gpu::Mailbox& mailbox,
                       const base::Closure& ack_callback);
 
   void RunAckCallbacks();
 
   void SwapDelegatedFrame(scoped_ptr<cc::DelegatedFrameData> frame_data);
   void SendDelegatedFrameAck();
 
   void ComputeContentsSize(const cc::CompositorFrame* frame);
   void ResetClipping();
   void ClipContents(const gfx::Rect& clipping, const gfx::Size& content_size);
 
+  void AttachLayers();
+  void RemoveLayers();
+
+  void UpdateAnimationSize(const cc::CompositorFrame* frame);
+  void ScheduleAnimationIfNecessary();
+
   // The model object.
   RenderWidgetHostImpl* host_;
 
   // Whether or not this widget is potentially attached to the view hierarchy.
   // This view may not actually be attached if this is true, but it should be
   // treated as such, because as soon as a ContentViewCore is set the layer
   // will be attached automatically.
-  bool is_layer_attached_;
+  bool are_layers_attached_;
 
   // ContentViewCoreImpl is our interface to the view system.
   ContentViewCoreImpl* content_view_core_;
 
   ImeAdapterAndroid ime_adapter_android_;
 
   // Body background color of the underlying document.
   SkColor cached_background_color_;
 
   // The texture layer for this view when using browser-side compositing.
@@ skipping 21 matching lines @@
   // The mailbox of the previously received frame.
   gpu::Mailbox current_mailbox_;
 
   // The mailbox of the frame we last returned.
   gpu::Mailbox last_mailbox_;
 
   base::WeakPtrFactory<RenderWidgetHostViewAndroid> weak_ptr_factory_;
 
   std::queue<base::Closure> ack_callbacks_;
 
+  // Used to render overscroll overlays.
+  scoped_ptr<OverscrollGlow> overscroll_effect_;
+
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewAndroid);
 };
 
 } // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_ANDROID_H_