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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_TRANSFORM_OPERATIONS_H_ | 5 #ifndef CC_ANIMATION_TRANSFORM_OPERATIONS_H_ |
6 #define CC_ANIMATION_TRANSFORM_OPERATIONS_H_ | 6 #define CC_ANIMATION_TRANSFORM_OPERATIONS_H_ |
7 | 7 |
8 #include <memory> | 8 #include <memory> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/logging.h" | 11 #include "base/logging.h" |
12 #include "base/macros.h" | 12 #include "base/macros.h" |
| 13 #include "cc/animation/animation_export.h" |
13 #include "cc/animation/transform_operation.h" | 14 #include "cc/animation/transform_operation.h" |
14 #include "cc/base/cc_export.h" | |
15 #include "ui/gfx/transform.h" | 15 #include "ui/gfx/transform.h" |
16 | 16 |
17 namespace gfx { | 17 namespace gfx { |
18 class BoxF; | 18 class BoxF; |
19 struct DecomposedTransform; | 19 struct DecomposedTransform; |
20 } | 20 } |
21 | 21 |
22 namespace cc { | 22 namespace cc { |
23 | 23 |
24 // Transform operations are a decomposed transformation matrix. It can be | 24 // Transform operations are a decomposed transformation matrix. It can be |
25 // applied to obtain a gfx::Transform at any time, and can be blended | 25 // applied to obtain a gfx::Transform at any time, and can be blended |
26 // intelligently with other transform operations, so long as they represent the | 26 // intelligently with other transform operations, so long as they represent the |
27 // same decomposition. For example, if we have a transform that is made up of | 27 // same decomposition. For example, if we have a transform that is made up of |
28 // a rotation followed by skew, it can be blended intelligently with another | 28 // a rotation followed by skew, it can be blended intelligently with another |
29 // transform made up of a rotation followed by a skew. Blending is possible if | 29 // transform made up of a rotation followed by a skew. Blending is possible if |
30 // we have two dissimilar sets of transform operations, but the effect may not | 30 // we have two dissimilar sets of transform operations, but the effect may not |
31 // be what was intended. For more information, see the comments for the blend | 31 // be what was intended. For more information, see the comments for the blend |
32 // function below. | 32 // function below. |
33 class CC_EXPORT TransformOperations { | 33 class CC_ANIMATION_EXPORT TransformOperations { |
34 public: | 34 public: |
35 TransformOperations(); | 35 TransformOperations(); |
36 TransformOperations(const TransformOperations& other); | 36 TransformOperations(const TransformOperations& other); |
37 ~TransformOperations(); | 37 ~TransformOperations(); |
38 | 38 |
39 // Returns a transformation matrix representing these transform operations. | 39 // Returns a transformation matrix representing these transform operations. |
40 gfx::Transform Apply() const; | 40 gfx::Transform Apply() const; |
41 | 41 |
42 // Given another set of transform operations and a progress in the range | 42 // Given another set of transform operations and a progress in the range |
43 // [0, 1], returns a transformation matrix representing the intermediate | 43 // [0, 1], returns a transformation matrix representing the intermediate |
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107 // For efficiency, we cache the decomposed transform. | 107 // For efficiency, we cache the decomposed transform. |
108 mutable std::unique_ptr<gfx::DecomposedTransform> decomposed_transform_; | 108 mutable std::unique_ptr<gfx::DecomposedTransform> decomposed_transform_; |
109 mutable bool decomposed_transform_dirty_; | 109 mutable bool decomposed_transform_dirty_; |
110 | 110 |
111 DISALLOW_ASSIGN(TransformOperations); | 111 DISALLOW_ASSIGN(TransformOperations); |
112 }; | 112 }; |
113 | 113 |
114 } // namespace cc | 114 } // namespace cc |
115 | 115 |
116 #endif // CC_ANIMATION_TRANSFORM_OPERATIONS_H_ | 116 #endif // CC_ANIMATION_TRANSFORM_OPERATIONS_H_ |
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