cc/layer_tree_host_client.h

   1 // Copyright 2012 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 CC_LAYER_TREE_HOST_CLIENT_H_
   6 #define CC_LAYER_TREE_HOST_CLIENT_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9
  10 namespace gfx {
  11 class Vector2d;
  12 }
  13
  14 namespace WebKit {
  15 class WebCompositorOutputSurface;
  16 }
  17
  18 namespace cc {
  19 class InputHandler;
  20
  21 class LayerTreeHostClient {
  22 public:
  23     virtual void willBeginFrame() = 0;
  24     // Marks finishing compositing-related tasks on the main thread. In threaded mode, this corresponds to didCommit().
  25     virtual void didBeginFrame() = 0;
  26     virtual void animate(double frameBeginTime) = 0;
  27     virtual void layout() = 0;
  28     virtual void applyScrollAndScale(gfx::Vector2d scrollDelta, float pageScale) = 0;
  29     virtual scoped_ptr<WebKit::WebCompositorOutputSurface> createOutputSurface() = 0;
  30     virtual void didRecreateOutputSurface(bool success) = 0;
  31     virtual scoped_ptr<InputHandler> createInputHandler() = 0;
  32     virtual void willCommit() = 0;
  33     virtual void didCommit() = 0;
  34     virtual void didCommitAndDrawFrame() = 0;
  35     virtual void didCompleteSwapBuffers() = 0;
  36
  37     // Used only in the single-threaded path.
  38     virtual void scheduleComposite() = 0;
  39
  40 protected:
  41     virtual ~LayerTreeHostClient() { }
  42 };
  43
  44 }
  45
  46 #endif  // CC_LAYER_TREE_HOST_CLIENT_H_