| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef CC_BASE_INVALIDATION_REGION_H_ |
| #define CC_BASE_INVALIDATION_REGION_H_ |
| |
| #include <vector> |
| |
| #include "cc/base/cc_export.h" |
| #include "cc/base/region.h" |
| #include "ui/gfx/geometry/rect.h" |
| |
| namespace cc { |
| |
| // This class behaves similarly to Region, but it may have false positives. That |
| // is, InvalidationRegion can be simplified to encompass a larger area than the |
| // collection of rects unioned. |
| class CC_EXPORT InvalidationRegion { |
| public: |
| InvalidationRegion(); |
| ~InvalidationRegion(); |
| |
| void Swap(Region* region); |
| void Clear(); |
| void Union(const gfx::Rect& rect); |
| bool IsEmpty() const { return pending_rects_.empty() && region_.IsEmpty(); } |
| |
| private: |
| void FinalizePendingRects(); |
| |
| Region region_; |
| std::vector<gfx::Rect> pending_rects_; |
| }; |
| |
| } // namespace cc |
| |
| #endif // CC_BASE_INVALIDATION_REGION_H_ |