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1 // Copyright (c) 2011 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 VIEWS_PAINT_LOCK_H_ | |
6 #define VIEWS_PAINT_LOCK_H_ | |
7 #pragma once | |
8 | |
9 #include "base/basictypes.h" | |
10 #include "views/views_export.h" | |
11 | |
12 namespace views { | |
13 | |
14 class View; | |
15 | |
16 // Instances of PaintLock can be created to disable painting of the view | |
17 // (compositing is not disabled). When the class is destroyed, painting is | |
18 // re-enabled. This can be useful during operations like animations, that are | |
19 // sensitive to costly paints, and during which only composting, not painting, | |
20 // is required. | |
21 class VIEWS_EXPORT PaintLock { | |
22 public: | |
23 // The paint lock does not own the view. It is an error for the view to be | |
24 // destroyed before the lock. | |
25 PaintLock(View* view); | |
26 ~PaintLock(); | |
27 | |
28 private: | |
29 View* view_; | |
30 | |
31 DISALLOW_COPY_AND_ASSIGN(PaintLock); | |
32 }; | |
33 | |
34 } // namespace views | |
35 | |
36 #endif // VIEWS_PAINT_LOCK_H_ | |
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