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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_H_ | 5 #ifndef CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_H_ |
6 #define CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_H_ | 6 #define CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/basictypes.h" | 11 #include "base/basictypes.h" |
12 #include "base/callback.h" | 12 #include "base/callback.h" |
13 #include "content/common/content_export.h" | 13 #include "content/common/content_export.h" |
14 #include "ui/gfx/size.h" | 14 #include "ui/gfx/size.h" |
15 #include "ui/gfx/surface/transport_dib.h" | 15 #include "ui/gfx/surface/transport_dib.h" |
16 | 16 |
17 class RenderProcessHost; | 17 class RenderProcessHost; |
18 class RenderWidgetHost; | 18 class RenderWidgetHost; |
19 | 19 |
20 namespace gfx { | 20 namespace gfx { |
21 class Rect; | 21 class Rect; |
22 } | 22 } |
23 | 23 |
| 24 namespace content { |
| 25 class RenderProcessHost; |
| 26 } |
| 27 |
24 namespace skia { | 28 namespace skia { |
25 class PlatformCanvas; | 29 class PlatformCanvas; |
26 } | 30 } |
27 | 31 |
28 // Represents a backing store for the pixels in a RenderWidgetHost. | 32 // Represents a backing store for the pixels in a RenderWidgetHost. |
29 class CONTENT_EXPORT BackingStore { | 33 class CONTENT_EXPORT BackingStore { |
30 public: | 34 public: |
31 virtual ~BackingStore(); | 35 virtual ~BackingStore(); |
32 | 36 |
33 RenderWidgetHost* render_widget_host() const { return render_widget_host_; } | 37 RenderWidgetHost* render_widget_host() const { return render_widget_host_; } |
34 const gfx::Size& size() { return size_; } | 38 const gfx::Size& size() { return size_; } |
35 | 39 |
36 // The number of bytes that this backing store consumes. The default | 40 // The number of bytes that this backing store consumes. The default |
37 // implementation just assumes there's 32 bits per pixel over the current | 41 // implementation just assumes there's 32 bits per pixel over the current |
38 // size of the screen. Implementations may override this if they have more | 42 // size of the screen. Implementations may override this if they have more |
39 // information about the color depth. | 43 // information about the color depth. |
40 virtual size_t MemorySize(); | 44 virtual size_t MemorySize(); |
41 | 45 |
42 // Paints the bitmap from the renderer onto the backing store. bitmap_rect | 46 // Paints the bitmap from the renderer onto the backing store. bitmap_rect |
43 // gives the location of bitmap, and copy_rects specifies the subregion(s) of | 47 // gives the location of bitmap, and copy_rects specifies the subregion(s) of |
44 // the backingstore to be painted from the bitmap. | 48 // the backingstore to be painted from the bitmap. |
45 // | 49 // |
46 // PaintToBackingStore does not need to guarantee that this has happened by | 50 // PaintToBackingStore does not need to guarantee that this has happened by |
47 // the time it returns, in which case it will set |scheduled_callback| to | 51 // the time it returns, in which case it will set |scheduled_callback| to |
48 // true and will call |callback| when completed. | 52 // true and will call |callback| when completed. |
49 virtual void PaintToBackingStore( | 53 virtual void PaintToBackingStore( |
50 RenderProcessHost* process, | 54 content::RenderProcessHost* process, |
51 TransportDIB::Id bitmap, | 55 TransportDIB::Id bitmap, |
52 const gfx::Rect& bitmap_rect, | 56 const gfx::Rect& bitmap_rect, |
53 const std::vector<gfx::Rect>& copy_rects, | 57 const std::vector<gfx::Rect>& copy_rects, |
54 const base::Closure& completion_callback, | 58 const base::Closure& completion_callback, |
55 bool* scheduled_completion_callback) = 0; | 59 bool* scheduled_completion_callback) = 0; |
56 | 60 |
57 // Extracts the gives subset of the backing store and copies it to the given | 61 // Extracts the gives subset of the backing store and copies it to the given |
58 // PlatformCanvas. The PlatformCanvas should not be initialized. This function | 62 // PlatformCanvas. The PlatformCanvas should not be initialized. This function |
59 // will call initialize() with the correct size. The return value indicates | 63 // will call initialize() with the correct size. The return value indicates |
60 // success. | 64 // success. |
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74 // The owner of this backing store. | 78 // The owner of this backing store. |
75 RenderWidgetHost* render_widget_host_; | 79 RenderWidgetHost* render_widget_host_; |
76 | 80 |
77 // The size of the backing store. | 81 // The size of the backing store. |
78 gfx::Size size_; | 82 gfx::Size size_; |
79 | 83 |
80 DISALLOW_COPY_AND_ASSIGN(BackingStore); | 84 DISALLOW_COPY_AND_ASSIGN(BackingStore); |
81 }; | 85 }; |
82 | 86 |
83 #endif // CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_H_ | 87 #endif // CONTENT_BROWSER_RENDERER_HOST_BACKING_STORE_H_ |
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