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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 UI_GFX_COMPOSITOR_COMPOSITOR_H_ | 5 #ifndef UI_GFX_COMPOSITOR_COMPOSITOR_H_ |
6 #define UI_GFX_COMPOSITOR_COMPOSITOR_H_ | 6 #define UI_GFX_COMPOSITOR_COMPOSITOR_H_ |
7 #pragma once | 7 #pragma once |
8 | 8 |
9 #include "base/memory/ref_counted.h" | 9 #include "base/memory/ref_counted.h" |
10 #include "ui/gfx/compositor/compositor_export.h" | |
11 #include "ui/gfx/transform.h" | 10 #include "ui/gfx/transform.h" |
12 #include "ui/gfx/native_widget_types.h" | 11 #include "ui/gfx/native_widget_types.h" |
13 | 12 |
14 class SkCanvas; | 13 class SkCanvas; |
15 namespace gfx { | 14 namespace gfx { |
16 class Point; | 15 class Point; |
17 class Rect; | 16 class Rect; |
18 class Size; | 17 class Size; |
19 } | 18 } |
20 | 19 |
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34 }; | 33 }; |
35 | 34 |
36 // Textures are created by a Compositor for managing an accelerated view. | 35 // Textures are created by a Compositor for managing an accelerated view. |
37 // Any time a View with a texture needs to redraw itself it invokes SetCanvas(). | 36 // Any time a View with a texture needs to redraw itself it invokes SetCanvas(). |
38 // When the view is ready to be drawn Draw() is invoked. | 37 // When the view is ready to be drawn Draw() is invoked. |
39 // | 38 // |
40 // Texture is really a proxy to the gpu. Texture does not itself keep a copy of | 39 // Texture is really a proxy to the gpu. Texture does not itself keep a copy of |
41 // the bitmap. | 40 // the bitmap. |
42 // | 41 // |
43 // Views own the Texture. | 42 // Views own the Texture. |
44 class COMPOSITOR_EXPORT Texture : public base::RefCounted<Texture> { | 43 class Texture : public base::RefCounted<Texture> { |
45 public: | 44 public: |
46 // Sets the canvas of this texture. The origin is at |origin|. | 45 // Sets the canvas of this texture. The origin is at |origin|. |
47 // |overall_size| gives the total size of texture. | 46 // |overall_size| gives the total size of texture. |
48 virtual void SetCanvas(const SkCanvas& canvas, | 47 virtual void SetCanvas(const SkCanvas& canvas, |
49 const gfx::Point& origin, | 48 const gfx::Point& origin, |
50 const gfx::Size& overall_size) = 0; | 49 const gfx::Size& overall_size) = 0; |
51 | 50 |
52 // Draws the texture. | 51 // Draws the texture. |
53 virtual void Draw(const ui::TextureDrawParams& params) = 0; | 52 virtual void Draw(const ui::TextureDrawParams& params) = 0; |
54 | 53 |
55 // Draws the portion of the texture contained within clip_bounds | 54 // Draws the portion of the texture contained within clip_bounds |
56 virtual void Draw(const ui::TextureDrawParams& params, | 55 virtual void Draw(const ui::TextureDrawParams& params, |
57 const gfx::Rect& clip_bounds_in_texture) = 0; | 56 const gfx::Rect& clip_bounds_in_texture) = 0; |
58 | 57 |
59 protected: | 58 protected: |
60 virtual ~Texture() {} | 59 virtual ~Texture() {} |
61 | 60 |
62 private: | 61 private: |
63 friend class base::RefCounted<Texture>; | 62 friend class base::RefCounted<Texture>; |
64 }; | 63 }; |
65 | 64 |
66 // Compositor object to take care of GPU painting. | 65 // Compositor object to take care of GPU painting. |
67 // A Browser compositor object is responsible for generating the final | 66 // A Browser compositor object is responsible for generating the final |
68 // displayable form of pixels comprising a single widget's contents. It draws an | 67 // displayable form of pixels comprising a single widget's contents. It draws an |
69 // appropriately transformed texture for each transformed view in the widget's | 68 // appropriately transformed texture for each transformed view in the widget's |
70 // view hierarchy. | 69 // view hierarchy. |
71 class COMPOSITOR_EXPORT Compositor : public base::RefCounted<Compositor> { | 70 class Compositor : public base::RefCounted<Compositor> { |
72 public: | 71 public: |
73 // Create a compositor from the provided handle. | 72 // Create a compositor from the provided handle. |
74 static Compositor* Create(gfx::AcceleratedWidget widget, | 73 static Compositor* Create(gfx::AcceleratedWidget widget, |
75 const gfx::Size& size); | 74 const gfx::Size& size); |
76 | 75 |
77 // Creates a new texture. The caller owns the returned object. | 76 // Creates a new texture. The caller owns the returned object. |
78 virtual Texture* CreateTexture() = 0; | 77 virtual Texture* CreateTexture() = 0; |
79 | 78 |
80 // Notifies the compositor that compositing is about to start. | 79 // Notifies the compositor that compositing is about to start. |
81 virtual void NotifyStart() = 0; | 80 virtual void NotifyStart() = 0; |
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96 protected: | 95 protected: |
97 virtual ~Compositor() {} | 96 virtual ~Compositor() {} |
98 | 97 |
99 private: | 98 private: |
100 friend class base::RefCounted<Compositor>; | 99 friend class base::RefCounted<Compositor>; |
101 }; | 100 }; |
102 | 101 |
103 } // namespace ui | 102 } // namespace ui |
104 | 103 |
105 #endif // UI_GFX_COMPOSITOR_COMPOSITOR_H_ | 104 #endif // UI_GFX_COMPOSITOR_COMPOSITOR_H_ |
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