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// 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 "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 region_.IsEmpty(); }
private:
void SimplifyIfNeeded();
Region region_;
};
} // namespace cc
#endif // CC_BASE_INVALIDATION_REGION_H_
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