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1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 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 CC_CONTENTS_SCALING_LAYER_H_ | 5 #ifndef CC_CONTENTS_SCALING_LAYER_H_ |
6 #define CC_CONTENTS_SCALING_LAYER_H_ | 6 #define CC_CONTENTS_SCALING_LAYER_H_ |
7 | 7 |
8 #include "cc/cc_export.h" | 8 #include "cc/cc_export.h" |
9 #include "cc/layer.h" | 9 #include "cc/layer.h" |
10 | 10 |
11 namespace cc { | 11 namespace cc { |
12 | 12 |
13 // Base class for layers that need contents scale. | 13 // Base class for layers that need contents scale. |
14 // The content bounds are determined by bounds and scale of the contents. | 14 // The content bounds are determined by bounds and scale of the contents. |
15 class CC_EXPORT ContentsScalingLayer : public Layer { | 15 class CC_EXPORT ContentsScalingLayer : public Layer { |
16 public: | 16 public: |
17 virtual gfx::Size contentBounds() const OVERRIDE; | 17 virtual void setIdealContentsScale(float ideal_contents_scale) OVERRIDE; |
18 virtual float contentsScaleX() const OVERRIDE; | 18 virtual void didUpdateBounds() OVERRIDE; |
19 virtual float contentsScaleY() const OVERRIDE; | |
20 virtual void setContentsScale(float contentsScale) OVERRIDE; | |
21 | 19 |
22 protected: | 20 protected: |
23 ContentsScalingLayer(); | 21 ContentsScalingLayer(); |
24 virtual ~ContentsScalingLayer(); | 22 virtual ~ContentsScalingLayer(); |
25 | 23 |
26 gfx::Size computeContentBoundsForScale(float scaleX, float scaleY) const; | 24 gfx::Size computeContentBoundsForScale(float scaleX, float scaleY) const; |
27 | |
28 private: | |
29 float m_contentsScale; | |
30 }; | 25 }; |
31 | 26 |
32 } // namespace cc | 27 } // namespace cc |
33 | 28 |
34 #endif // CC_CONTENTS_SCALING_LAYER_H__ | 29 #endif // CC_CONTENTS_SCALING_LAYER_H__ |
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