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1 // Copyright 2016 The Chromium Authors. All rights reserved. | 1 // Copyright 2016 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_LAYER_LIST_ITERATOR_H_ | 5 #ifndef CC_LAYERS_LAYER_LIST_ITERATOR_H_ |
6 #define CC_LAYERS_LAYER_LIST_ITERATOR_H_ | 6 #define CC_LAYERS_LAYER_LIST_ITERATOR_H_ |
7 | 7 |
8 #include <stdlib.h> | 8 #include <stdlib.h> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "cc/cc_export.h" | 11 #include "cc/cc_export.h" |
12 | 12 |
13 namespace cc { | 13 namespace cc { |
14 | 14 |
15 class LayerImpl; | 15 // This visits a tree of layers in drawing order. For LayerImpls, this is only |
16 | 16 // useful for tests, since there's no LayerImpl tree outside unit tests. |
17 // Unlike LayerIterator and friends, these iterators are not intended to permit | |
18 // traversing the RSLL. Rather, they visit a collection of LayerImpls in | |
19 // stacking order. All recursive walks over the LayerImpl tree should be | |
20 // switched to use these classes instead as the concept of a LayerImpl tree is | |
21 // deprecated. | |
22 template <typename LayerType> | 17 template <typename LayerType> |
23 class CC_EXPORT LayerListIterator { | 18 class CC_EXPORT LayerListIterator { |
24 public: | 19 public: |
25 explicit LayerListIterator(LayerType* root_layer); | 20 explicit LayerListIterator(LayerType* root_layer); |
26 LayerListIterator(const LayerListIterator<LayerType>& other); | 21 LayerListIterator(const LayerListIterator<LayerType>& other); |
27 virtual ~LayerListIterator(); | 22 virtual ~LayerListIterator(); |
28 | 23 |
29 bool operator==(const LayerListIterator<LayerType>& other) const { | 24 bool operator==(const LayerListIterator<LayerType>& other) const { |
30 return current_layer_ == other.current_layer_; | 25 return current_layer_ == other.current_layer_; |
31 } | 26 } |
(...skipping 26 matching lines...) Expand all Loading... |
58 | 53 |
59 private: | 54 private: |
60 void DescendToRightmostInSubtree(); | 55 void DescendToRightmostInSubtree(); |
61 LayerType* current_layer() { return this->current_layer_; } | 56 LayerType* current_layer() { return this->current_layer_; } |
62 std::vector<size_t>& list_indices() { return this->list_indices_; } | 57 std::vector<size_t>& list_indices() { return this->list_indices_; } |
63 }; | 58 }; |
64 | 59 |
65 } // namespace cc | 60 } // namespace cc |
66 | 61 |
67 #endif // CC_LAYERS_LAYER_LIST_ITERATOR_H_ | 62 #endif // CC_LAYERS_LAYER_LIST_ITERATOR_H_ |
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