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1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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_ANIMATION_LAYER_ANIMATION_VALUE_PROVIDER_H_ | 5 #ifndef CC_ANIMATION_LAYER_ANIMATION_VALUE_PROVIDER_H_ |
6 #define CC_ANIMATION_LAYER_ANIMATION_VALUE_PROVIDER_H_ | 6 #define CC_ANIMATION_LAYER_ANIMATION_VALUE_PROVIDER_H_ |
7 | 7 |
8 #include "cc/base/cc_export.h" | 8 #include "cc/base/cc_export.h" |
9 #include "ui/gfx/geometry/scroll_offset.h" | |
danakj
2014/12/23 16:47:30
You can still forward declare a return type can yo
| |
9 | 10 |
10 namespace cc { | 11 namespace cc { |
11 | 12 |
12 class ScrollOffset; | |
13 | |
14 // A LayerAnimationValueProvider is used for determining the starting value | 13 // A LayerAnimationValueProvider is used for determining the starting value |
15 // for animations that start at their 'current' value rather than at a | 14 // for animations that start at their 'current' value rather than at a |
16 // pre-specified value. | 15 // pre-specified value. |
17 class CC_EXPORT LayerAnimationValueProvider { | 16 class CC_EXPORT LayerAnimationValueProvider { |
18 public: | 17 public: |
19 virtual ~LayerAnimationValueProvider() {} | 18 virtual ~LayerAnimationValueProvider() {} |
20 | 19 |
21 virtual gfx::ScrollOffset ScrollOffsetForAnimation() const = 0; | 20 virtual gfx::ScrollOffset ScrollOffsetForAnimation() const = 0; |
22 }; | 21 }; |
23 | 22 |
24 } // namespace cc | 23 } // namespace cc |
25 | 24 |
26 #endif // CC_ANIMATION_LAYER_ANIMATION_VALUE_PROVIDER_H_ | 25 #endif // CC_ANIMATION_LAYER_ANIMATION_VALUE_PROVIDER_H_ |
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