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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_LAYERS_CONTENTS_SCALING_LAYER_H_ | 5 #ifndef CC_LAYERS_CONTENTS_SCALING_LAYER_H_ |
6 #define CC_LAYERS_CONTENTS_SCALING_LAYER_H_ | 6 #define CC_LAYERS_CONTENTS_SCALING_LAYER_H_ |
7 | 7 |
8 #include "cc/base/cc_export.h" | 8 #include "cc/base/cc_export.h" |
9 #include "cc/layers/layer.h" | 9 #include "cc/layers/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 void CalculateContentsScale( | 17 virtual void CalculateContentsScale(float ideal_contents_scale, |
18 float ideal_contents_scale, | 18 float device_scale_factor, |
19 float device_scale_factor, | 19 float page_scale_factor, |
20 float page_scale_factor, | 20 float maximum_animation_contents_scale, |
21 bool animating_transform_to_screen, | 21 bool animating_transform_to_screen, |
22 float* contents_scale_x, | 22 float* contents_scale_x, |
23 float* contents_scale_y, | 23 float* contents_scale_y, |
24 gfx::Size* content_bounds) OVERRIDE; | 24 gfx::Size* content_bounds) OVERRIDE; |
25 | 25 |
26 virtual bool Update(ResourceUpdateQueue* queue, | 26 virtual bool Update(ResourceUpdateQueue* queue, |
27 const OcclusionTracker<Layer>* occlusion) OVERRIDE; | 27 const OcclusionTracker<Layer>* occlusion) OVERRIDE; |
28 | 28 |
29 protected: | 29 protected: |
30 ContentsScalingLayer(); | 30 ContentsScalingLayer(); |
31 virtual ~ContentsScalingLayer(); | 31 virtual ~ContentsScalingLayer(); |
32 | 32 |
33 gfx::Size ComputeContentBoundsForScale(float scale_x, float scale_y) const; | 33 gfx::Size ComputeContentBoundsForScale(float scale_x, float scale_y) const; |
34 | 34 |
35 private: | 35 private: |
36 float last_update_contents_scale_x_; | 36 float last_update_contents_scale_x_; |
37 float last_update_contents_scale_y_; | 37 float last_update_contents_scale_y_; |
38 | 38 |
39 DISALLOW_COPY_AND_ASSIGN(ContentsScalingLayer); | 39 DISALLOW_COPY_AND_ASSIGN(ContentsScalingLayer); |
40 }; | 40 }; |
41 | 41 |
42 } // namespace cc | 42 } // namespace cc |
43 | 43 |
44 #endif // CC_LAYERS_CONTENTS_SCALING_LAYER_H__ | 44 #endif // CC_LAYERS_CONTENTS_SCALING_LAYER_H__ |
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