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| 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 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 | 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 VIEWS_PAINT_LOCK_H_ | 5 #ifndef UI_VIEWS_PAINT_LOCK_H_ |
| 6 #define VIEWS_PAINT_LOCK_H_ | 6 #define UI_VIEWS_PAINT_LOCK_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include "base/basictypes.h" | 9 #include "base/basictypes.h" |
| 10 #include "views/views_export.h" | 10 #include "ui/views/views_export.h" |
| 11 | 11 |
| 12 namespace views { | 12 namespace views { |
| 13 | 13 |
| 14 class View; | 14 class View; |
| 15 | 15 |
| 16 // Instances of PaintLock can be created to disable painting of the view | 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 | 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 | 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, | 19 // sensitive to costly paints, and during which only composting, not painting, |
| 20 // is required. | 20 // is required. |
| 21 class VIEWS_EXPORT PaintLock { | 21 class VIEWS_EXPORT PaintLock { |
| 22 public: | 22 public: |
| 23 // The paint lock does not own the view. It is an error for the view to be | 23 // The paint lock does not own the view. It is an error for the view to be |
| 24 // destroyed before the lock. | 24 // destroyed before the lock. |
| 25 PaintLock(View* view); | 25 PaintLock(View* view); |
| 26 ~PaintLock(); | 26 ~PaintLock(); |
| 27 | 27 |
| 28 private: | 28 private: |
| 29 View* view_; | 29 View* view_; |
| 30 | 30 |
| 31 DISALLOW_COPY_AND_ASSIGN(PaintLock); | 31 DISALLOW_COPY_AND_ASSIGN(PaintLock); |
| 32 }; | 32 }; |
| 33 | 33 |
| 34 } // namespace views | 34 } // namespace views |
| 35 | 35 |
| 36 #endif // VIEWS_PAINT_LOCK_H_ | 36 #endif // UI_VIEWS_PAINT_LOCK_H_ |
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