synchronous_compositor_impl.h revision 7d4cd473f85ac64c3747c96c277f9e506a0d2246 
1// Copyright 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_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
6#define CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
7
8#include "base/basictypes.h"
9#include "base/compiler_specific.h"
10#include "base/memory/scoped_ptr.h"
11#include "cc/input/layer_scroll_offset_delegate.h"
12#include "content/browser/android/in_process/synchronous_compositor_output_surface.h"
13#include "content/port/common/input_event_ack_state.h"
14#include "content/public/browser/android/synchronous_compositor.h"
15#include "content/public/browser/web_contents_user_data.h"
16
17namespace cc {
18class InputHandler;
19}
20
21namespace WebKit {
22class WebInputEvent;
23}
24
25namespace content {
26class InputHandlerManager;
27
28// The purpose of this class is to act as the intermediary between the various
29// components that make up the 'synchronous compositor mode' implementation and
30// expose their functionality via the SynchronousCompositor interface.
31// This class is created on the main thread but most of the APIs are called
32// from the Compositor thread.
33class SynchronousCompositorImpl
34    : public cc::LayerScrollOffsetDelegate,
35      public SynchronousCompositor,
36      public SynchronousCompositorOutputSurfaceDelegate,
37      public WebContentsUserData<SynchronousCompositorImpl> {
38 public:
39  // When used from browser code, use both |process_id| and |routing_id|.
40  static SynchronousCompositorImpl* FromID(int process_id, int routing_id);
41  // When handling upcalls from renderer code, use this version; the process id
42  // is implicitly that of the in-process renderer.
43  static SynchronousCompositorImpl* FromRoutingID(int routing_id);
44
45  InputEventAckState HandleInputEvent(const WebKit::WebInputEvent& input_event);
46
47  // SynchronousCompositor
48  virtual void SetClient(SynchronousCompositorClient* compositor_client)
49      OVERRIDE;
50  virtual bool InitializeHwDraw() OVERRIDE;
51  virtual bool DemandDrawHw(
52      gfx::Size view_size,
53      const gfx::Transform& transform,
54      gfx::Rect clip) OVERRIDE;
55  virtual bool DemandDrawSw(SkCanvas* canvas) OVERRIDE;
56  virtual void DidChangeRootLayerScrollOffset() OVERRIDE;
57
58  // SynchronousCompositorOutputSurfaceDelegate
59  virtual void DidBindOutputSurface(
60      SynchronousCompositorOutputSurface* output_surface) OVERRIDE;
61  virtual void DidDestroySynchronousOutputSurface(
62      SynchronousCompositorOutputSurface* output_surface) OVERRIDE;
63  virtual void SetContinuousInvalidate(bool enable) OVERRIDE;
64  virtual void UpdateFrameMetaData(
65      const cc::CompositorFrameMetadata& frame_info) OVERRIDE;
66
67  // LayerScrollOffsetDelegate
68  virtual void SetTotalScrollOffset(gfx::Vector2dF new_value) OVERRIDE;
69  virtual gfx::Vector2dF GetTotalScrollOffset() OVERRIDE;
70
71  void SetInputHandler(cc::InputHandler* input_handler);
72
73 private:
74  explicit SynchronousCompositorImpl(WebContents* contents);
75  virtual ~SynchronousCompositorImpl();
76  friend class WebContentsUserData<SynchronousCompositorImpl>;
77
78  void DidCreateSynchronousOutputSurface(
79      SynchronousCompositorOutputSurface* output_surface);
80  bool CalledOnValidThread() const;
81
82  SynchronousCompositorClient* compositor_client_;
83  SynchronousCompositorOutputSurface* output_surface_;
84  WebContents* contents_;
85  cc::InputHandler* input_handler_;
86
87  DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorImpl);
88};
89
90}  // namespace content
91
92#endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
93