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Side by Side Diff: cc/animation/transform_operations.h

Issue 2506093003: CC Animation: Make cc/animation an independent GN component. (Closed)
Patch Set: Rebase. Created 4 years, 1 month ago
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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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