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