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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 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 | 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_IMAGE_CANVAS_IMAGE_SOURCE_H_ | 5 #ifndef UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_ |
6 #define UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_ | 6 #define UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/compiler_specific.h" | 9 #include "base/compiler_specific.h" |
10 #include "ui/gfx/gfx_export.h" | 10 #include "ui/gfx/gfx_export.h" |
11 #include "ui/gfx/image/image_skia_source.h" | 11 #include "ui/gfx/image/image_skia_source.h" |
12 #include "ui/gfx/size.h" | 12 #include "ui/gfx/size.h" |
13 | 13 |
14 namespace gfx { | 14 namespace gfx { |
15 class Canvas; | 15 class Canvas; |
16 class ImageSkiaRep; | 16 class ImageSkiaRep; |
17 | 17 |
18 // CanvasImageSource is useful if you need to generate an image for | 18 // CanvasImageSource is useful if you need to generate an image for |
19 // a scale factor using gfx::Canvas. It creates a new Canvas | 19 // a scale factor using gfx::Canvas. It creates a new Canvas |
20 // with target scale factor and generates ImageSkiaRep when drawing is | 20 // with target scale factor and generates ImageSkiaRep when drawing is |
21 // completed. | 21 // completed. |
22 class UI_EXPORT CanvasImageSource : public gfx::ImageSkiaSource { | 22 class GFX_EXPORT CanvasImageSource : public gfx::ImageSkiaSource { |
23 public: | 23 public: |
24 CanvasImageSource(const gfx::Size& size, bool is_opaque); | 24 CanvasImageSource(const gfx::Size& size, bool is_opaque); |
25 | 25 |
26 // Called when a new image needs to be drawn for a scale factor. | 26 // Called when a new image needs to be drawn for a scale factor. |
27 virtual void Draw(gfx::Canvas* canvas) = 0; | 27 virtual void Draw(gfx::Canvas* canvas) = 0; |
28 | 28 |
29 // Returns the size of images in DIP that this source will generate. | 29 // Returns the size of images in DIP that this source will generate. |
30 const gfx::Size& size() const { return size_; }; | 30 const gfx::Size& size() const { return size_; }; |
31 | 31 |
32 // Overridden from gfx::ImageSkiaSource. | 32 // Overridden from gfx::ImageSkiaSource. |
33 virtual gfx::ImageSkiaRep GetImageForScale(float scale) OVERRIDE; | 33 virtual gfx::ImageSkiaRep GetImageForScale(float scale) OVERRIDE; |
34 | 34 |
35 protected: | 35 protected: |
36 virtual ~CanvasImageSource() {} | 36 virtual ~CanvasImageSource() {} |
37 | 37 |
38 const gfx::Size size_; | 38 const gfx::Size size_; |
39 const bool is_opaque_; | 39 const bool is_opaque_; |
40 DISALLOW_COPY_AND_ASSIGN(CanvasImageSource); | 40 DISALLOW_COPY_AND_ASSIGN(CanvasImageSource); |
41 }; | 41 }; |
42 | 42 |
43 } // namespace gfx | 43 } // namespace gfx |
44 | 44 |
45 #endif // UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_ | 45 #endif // UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_ |
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