synchronous_compositor_impl.h revision 010d83a9304c5a91596085d917d248abff47903a 
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/common/input/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 blink {
22class WebInputEvent;
23}
24
25namespace content {
26class InputHandlerManager;
27struct DidOverscrollParams;
28
29// The purpose of this class is to act as the intermediary between the various
30// components that make up the 'synchronous compositor mode' implementation and
31// expose their functionality via the SynchronousCompositor interface.
32// This class is created on the main thread but most of the APIs are called
33// from the Compositor thread.
34class SynchronousCompositorImpl
35    : public cc::LayerScrollOffsetDelegate,
36      public SynchronousCompositor,
37      public SynchronousCompositorOutputSurfaceDelegate,
38      public WebContentsUserData<SynchronousCompositorImpl> {
39 public:
40  // When used from browser code, use both |process_id| and |routing_id|.
41  static SynchronousCompositorImpl* FromID(int process_id, int routing_id);
42  // When handling upcalls from renderer code, use this version; the process id
43  // is implicitly that of the in-process renderer.
44  static SynchronousCompositorImpl* FromRoutingID(int routing_id);
45
46  InputEventAckState HandleInputEvent(const blink::WebInputEvent& input_event);
47
48  // SynchronousCompositor
49  virtual void SetClient(SynchronousCompositorClient* compositor_client)
50      OVERRIDE;
51  virtual bool InitializeHwDraw(
52      scoped_refptr<gfx::GLSurface> surface) OVERRIDE;
53  virtual void ReleaseHwDraw() OVERRIDE;
54  virtual bool DemandDrawHw(
55      gfx::Size surface_size,
56      const gfx::Transform& transform,
57      gfx::Rect viewport,
58      gfx::Rect clip,
59      bool stencil_enabled) OVERRIDE;
60  virtual bool DemandDrawSw(SkCanvas* canvas) OVERRIDE;
61  virtual void SetMemoryPolicy(
62      const SynchronousCompositorMemoryPolicy& policy) OVERRIDE;
63  virtual void DidChangeRootLayerScrollOffset() OVERRIDE;
64
65  // SynchronousCompositorOutputSurfaceDelegate
66  virtual void DidBindOutputSurface(
67      SynchronousCompositorOutputSurface* output_surface) OVERRIDE;
68  virtual void DidDestroySynchronousOutputSurface(
69      SynchronousCompositorOutputSurface* output_surface) OVERRIDE;
70  virtual void SetContinuousInvalidate(bool enable) OVERRIDE;
71  virtual void UpdateFrameMetaData(
72      const cc::CompositorFrameMetadata& frame_info) OVERRIDE;
73  virtual void DidActivatePendingTree() OVERRIDE;
74
75  // LayerScrollOffsetDelegate
76  virtual void SetMaxScrollOffset(
77      const gfx::Vector2dF& max_scroll_offset) OVERRIDE;
78  virtual void SetTotalScrollOffset(const gfx::Vector2dF& new_value) OVERRIDE;
79  virtual gfx::Vector2dF GetTotalScrollOffset() OVERRIDE;
80  virtual bool IsExternalFlingActive() const OVERRIDE;
81  virtual void SetTotalPageScaleFactorAndLimits(
82      float page_scale_factor,
83      float min_page_scale_factor,
84      float max_page_scale_factor) OVERRIDE;
85  virtual void SetScrollableSize(const gfx::SizeF& scrollable_size) OVERRIDE;
86
87  void SetInputHandler(cc::InputHandler* input_handler);
88  void DidOverscroll(const DidOverscrollParams& params);
89  void DidStopFlinging();
90
91 private:
92  explicit SynchronousCompositorImpl(WebContents* contents);
93  virtual ~SynchronousCompositorImpl();
94  friend class WebContentsUserData<SynchronousCompositorImpl>;
95
96  void DidCreateSynchronousOutputSurface(
97      SynchronousCompositorOutputSurface* output_surface);
98  bool CalledOnValidThread() const;
99
100  SynchronousCompositorClient* compositor_client_;
101  SynchronousCompositorOutputSurface* output_surface_;
102  WebContents* contents_;
103  cc::InputHandler* input_handler_;
104
105  DISALLOW_COPY_AND_ASSIGN(SynchronousCompositorImpl);
106};
107
108}  // namespace content
109
110#endif  // CONTENT_BROWSER_ANDROID_IN_PROCESS_SYNCHRONOUS_COMPOSITOR_IMPL_H_
111