74 lines
2.6 KiB
C++
74 lines
2.6 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "LayoutRect.h"
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#include "RenderGeometryMap.h"
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namespace WTF {
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class TextStream;
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}
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namespace WebCore {
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class OverflowAwareOverlapContainer;
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class OverlapMapContainer;
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class RenderLayer;
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class LayerOverlapMap {
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WTF_MAKE_NONCOPYABLE(LayerOverlapMap);
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public:
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LayerOverlapMap(const RenderLayer& rootLayer);
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~LayerOverlapMap();
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struct LayerAndBounds {
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RenderLayer& layer;
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LayoutRect bounds;
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};
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void add(const RenderLayer&, const LayoutRect&, const Vector<LayerAndBounds>& enclosingClippingLayers);
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bool overlapsLayers(const RenderLayer&, const LayoutRect&, const Vector<LayerAndBounds>& enclosingClippingLayers) const;
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bool isEmpty() const { return m_isEmpty; }
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void pushCompositingContainer();
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void popCompositingContainer();
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const RenderGeometryMap& geometryMap() const { return m_geometryMap; }
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RenderGeometryMap& geometryMap() { return m_geometryMap; }
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const Vector<std::unique_ptr<OverlapMapContainer>>& overlapStack() const { return m_overlapStack; }
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private:
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Vector<std::unique_ptr<OverlapMapContainer>> m_overlapStack;
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RenderGeometryMap m_geometryMap;
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const RenderLayer& m_rootLayer;
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bool m_isEmpty { true };
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};
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TextStream& operator<<(TextStream&, const LayerOverlapMap&);
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} // namespace WebCore
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