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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 UI_COMPOSITOR_LAYER_TREE_OWNER_H_ | 5 #ifndef UI_COMPOSITOR_LAYER_TREE_OWNER_H_ |
6 #define UI_COMPOSITOR_LAYER_TREE_OWNER_H_ | 6 #define UI_COMPOSITOR_LAYER_TREE_OWNER_H_ |
7 | 7 |
| 8 #include <memory> |
| 9 |
8 #include "base/compiler_specific.h" | 10 #include "base/compiler_specific.h" |
9 #include "base/macros.h" | 11 #include "base/macros.h" |
10 #include "ui/compositor/compositor_export.h" | 12 #include "ui/compositor/compositor_export.h" |
11 | 13 |
12 namespace ui { | 14 namespace ui { |
13 | 15 |
14 class Layer; | 16 class Layer; |
15 | 17 |
16 // Scoping object that owns a Layer and all its descendants. | 18 // Scoping object that owns a Layer and all its descendants. |
17 class COMPOSITOR_EXPORT LayerTreeOwner { | 19 class COMPOSITOR_EXPORT LayerTreeOwner { |
18 public: | 20 public: |
19 explicit LayerTreeOwner(Layer* root); | 21 explicit LayerTreeOwner(std::unique_ptr<Layer> root); |
20 ~LayerTreeOwner(); | 22 ~LayerTreeOwner(); |
21 | 23 |
22 Layer* release() WARN_UNUSED_RESULT { | 24 Layer* release() WARN_UNUSED_RESULT { |
23 Layer* root = root_; | 25 Layer* root = root_; |
24 root_ = NULL; | 26 root_ = NULL; |
25 return root; | 27 return root; |
26 } | 28 } |
27 | 29 |
28 Layer* root() { return root_; } | 30 Layer* root() { return root_; } |
29 const Layer* root() const { return root_; } | 31 const Layer* root() const { return root_; } |
30 | 32 |
31 private: | 33 private: |
32 Layer* root_; | 34 Layer* root_; |
33 | 35 |
34 DISALLOW_COPY_AND_ASSIGN(LayerTreeOwner); | 36 DISALLOW_COPY_AND_ASSIGN(LayerTreeOwner); |
35 }; | 37 }; |
36 | 38 |
37 } // namespace | 39 } // namespace |
38 | 40 |
39 #endif // UI_COMPOSITOR_LAYER_TREE_OWNER_H_ | 41 #endif // UI_COMPOSITOR_LAYER_TREE_OWNER_H_ |
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