compositor.h revision 1320f92c476a1ad9d19dba2a48c72b75566198e9 
1// Copyright (c) 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 CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
6#define CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
7
8#include "base/callback.h"
9#include "cc/resources/ui_resource_bitmap.h"
10#include "content/common/content_export.h"
11#include "content/public/browser/android/ui_resource_provider.h"
12#include "ui/gfx/native_widget_types.h"
13#include "ui/gfx/rect.h"
14#include "ui/gfx/size.h"
15
16class SkBitmap;
17
18namespace cc {
19class Layer;
20}
21
22namespace gfx {
23class JavaBitmap;
24}
25
26namespace content {
27class CompositorClient;
28class UIResourceProvider;
29
30// An interface to the browser-side compositor.
31class CONTENT_EXPORT Compositor {
32 public:
33  virtual ~Compositor() {}
34
35  // Performs the global initialization needed before any compositor
36  // instance can be used. This should be called only once.
37  static void Initialize();
38
39  // Creates and returns a compositor instance.  |root_window| needs to outlive
40  // the compositor as it manages callbacks on the compositor.
41  static Compositor* Create(CompositorClient* client,
42                            gfx::NativeWindow root_window);
43
44  // Attaches the layer tree.
45  virtual void SetRootLayer(scoped_refptr<cc::Layer> root) = 0;
46
47  // Set the scale factor from DIP to pixel.
48  virtual void setDeviceScaleFactor(float factor) = 0;
49
50  // Set the output surface bounds.
51  virtual void SetWindowBounds(const gfx::Size& size) = 0;
52
53  // Sets the window visibility. When becoming invisible, resources will get
54  // freed and other calls into the compositor are not allowed until after
55  // having been made visible again.
56  virtual void SetVisible(bool visible) = 0;
57
58  // Set the output surface which the compositor renders into.
59  virtual void SetSurface(jobject surface) = 0;
60
61  // Tells the view tree to assume a transparent background when rendering.
62  virtual void SetHasTransparentBackground(bool flag) = 0;
63
64  // Request layout and draw. You only need to call this if you need to trigger
65  // Composite *without* having modified the layer tree.
66  virtual void SetNeedsComposite() = 0;
67
68  // Returns the UI resource provider associated with the compositor.
69  virtual UIResourceProvider& GetUIResourceProvider() = 0;
70
71 protected:
72  Compositor() {}
73};
74
75}  // namespace content
76
77#endif  // CONTENT_PUBLIC_BROWSER_ANDROID_COMPOSITOR_H_
78