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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CC_ANIMATION_LAYER_TREE_MUTATION_H_ |
| 6 #define CC_ANIMATION_LAYER_TREE_MUTATION_H_ |
| 7 |
| 8 #include "base/containers/hash_tables.h" |
| 9 #include "cc/animation/mutable_properties.h" |
| 10 #include "third_party/skia/include/utils/SkMatrix44.h" |
| 11 |
| 12 namespace cc { |
| 13 |
| 14 struct LayerTreeMutation { |
| 15 public: |
| 16 void SetOpacity(float opacity) { |
| 17 mutated_flags_ |= kMutablePropertyOpacity; |
| 18 opacity_ = opacity; |
| 19 } |
| 20 void SetScrollLeft(float scroll_left) { |
| 21 mutated_flags_ |= kMutablePropertyScrollLeft; |
| 22 scroll_left_ = scroll_left; |
| 23 } |
| 24 void SetScrollTop(float scroll_top) { |
| 25 mutated_flags_ |= kMutablePropertyScrollTop; |
| 26 scroll_top_ = scroll_top; |
| 27 } |
| 28 void SetTransform(const SkMatrix44& transform) { |
| 29 mutated_flags_ |= kMutablePropertyTransform; |
| 30 transform_ = transform; |
| 31 } |
| 32 |
| 33 bool is_opacity_mutated() const { |
| 34 return !!(mutated_flags_ & kMutablePropertyOpacity); |
| 35 } |
| 36 bool is_scroll_left_mutated() const { |
| 37 return !!(mutated_flags_ & kMutablePropertyScrollLeft); |
| 38 } |
| 39 bool is_scroll_top_mutated() const { |
| 40 return !!(mutated_flags_ & kMutablePropertyScrollTop); |
| 41 } |
| 42 bool is_transform_mutated() const { |
| 43 return !!(mutated_flags_ & kMutablePropertyTransform); |
| 44 } |
| 45 |
| 46 float opacity() const { return opacity_; } |
| 47 float scroll_left() const { return scroll_left_; } |
| 48 float scroll_top() const { return scroll_top_; } |
| 49 SkMatrix44 transform() const { return transform_; } |
| 50 |
| 51 private: |
| 52 uint32_t mutated_flags_ = 0; |
| 53 float opacity_ = 0; |
| 54 float scroll_left_ = 0; |
| 55 float scroll_top_ = 0; |
| 56 SkMatrix44 transform_; |
| 57 }; |
| 58 |
| 59 typedef base::hash_map<uint64_t, LayerTreeMutation> LayerTreeMutationMap; |
| 60 |
| 61 } // namespace cc |
| 62 |
| 63 #endif // CC_ANIMATION_LAYER_TREE_MUTATION_H_ |
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