content/renderer/gpu/input_handler_wrapper.h

   1 // Copyright (c) 2013 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 CONTENT_RENDERER_GPU_INPUT_HANDLER_WRAPPER_H_
   6 #define CONTENT_RENDERER_GPU_INPUT_HANDLER_WRAPPER_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "base/memory/weak_ptr.h"
  10 #include "content/renderer/gpu/input_handler_manager.h"
  11 #include "content/renderer/gpu/input_handler_proxy.h"
  12 #include "content/renderer/gpu/input_handler_proxy_client.h"
  13
  14 namespace content {
  15
  16 // This class lives on the compositor thread.
  17 class InputHandlerWrapper
  18     : public InputHandlerProxyClient,
  19       public base::RefCountedThreadSafe<InputHandlerWrapper> {
  20  public:
  21   InputHandlerWrapper(InputHandlerManager* input_handler_manager,
  22                       int routing_id,
  23                       const scoped_refptr<base::MessageLoopProxy>& main_loop,
  24                       const base::WeakPtr<cc::InputHandler>& input_handler,
  25                       const base::WeakPtr<RenderViewImpl>& render_view_impl);
  26
  27   int routing_id() const { return routing_id_; }
  28   InputHandlerProxy* input_handler_proxy() { return &input_handler_proxy_; }
  29
  30   // InputHandlerProxyClient implementation.
  31   virtual void WillShutdown() OVERRIDE;
  32   virtual void TransferActiveWheelFlingAnimation(
  33       const WebKit::WebActiveWheelFlingParameters& params) OVERRIDE;
  34   virtual WebKit::WebGestureCurve* CreateFlingAnimationCurve(
  35       int deviceSource,
  36       const WebKit::WebFloatPoint& velocity,
  37       const WebKit::WebSize& cumulativeScroll) OVERRIDE;
  38   virtual void DidOverscroll(gfx::Vector2dF accumulated_overscroll,
  39                              gfx::Vector2dF current_fling_velocity) OVERRIDE;
  40
  41  private:
  42   friend class base::RefCountedThreadSafe<InputHandlerWrapper>;
  43
  44   virtual ~InputHandlerWrapper();
  45
  46   InputHandlerManager* input_handler_manager_;
  47   int routing_id_;
  48   InputHandlerProxy input_handler_proxy_;
  49   scoped_refptr<base::MessageLoopProxy> main_loop_;
  50
  51   // Can only be accessed on the main thread.
  52   base::WeakPtr<RenderViewImpl> render_view_impl_;
  53
  54   DISALLOW_COPY_AND_ASSIGN(InputHandlerWrapper);
  55 };
  56
  57 }  // namespace content
  58
  59 #endif  // CONTENT_RENDERER_GPU_INPUT_HANDLER_WRAPPER_H_