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/*
* Copyright (C) 2018 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 "FormattingState.h"
#include "PlacedFloats.h"
#include <wtf/HashSet.h>
#include <wtf/TZoneMalloc.h>
namespace WebCore {
namespace Layout {
// BlockFormattingState holds the state for a particular block formatting context tree.
class BlockFormattingState : public FormattingState {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(BlockFormattingState);
public:
BlockFormattingState(LayoutState&, const ElementBox& blockFormattingContextRoot);
~BlockFormattingState();
const PlacedFloats& placedFloats() const { return m_placedFloats; }
PlacedFloats& placedFloats() { return m_placedFloats; }
// Since we layout the out-of-flow boxes at the end of the formatting context layout, it's okay to store them in the formatting state -as opposed to the containing block level.
using OutOfFlowBoxList = Vector<CheckedRef<const Box>>;
void addOutOfFlowBox(const Box& outOfFlowBox) { m_outOfFlowBoxes.append(outOfFlowBox); }
void setOutOfFlowBoxes(OutOfFlowBoxList&& outOfFlowBoxes) { m_outOfFlowBoxes = WTFMove(outOfFlowBoxes); }
const OutOfFlowBoxList& outOfFlowBoxes() const { return m_outOfFlowBoxes; }
void setUsedVerticalMargin(const Box& layoutBox, const UsedVerticalMargin& usedVerticalMargin) { m_usedVerticalMargins.set(layoutBox, usedVerticalMargin); }
UsedVerticalMargin usedVerticalMargin(const Box& layoutBox) const { return m_usedVerticalMargins.get(layoutBox); }
bool hasUsedVerticalMargin(const Box& layoutBox) const { return m_usedVerticalMargins.contains(layoutBox); }
void setHasClearance(const Box& layoutBox) { m_clearanceSet.add(layoutBox); }
void clearHasClearance(const Box& layoutBox) { m_clearanceSet.remove(layoutBox); }
bool hasClearance(const Box& layoutBox) const { return m_clearanceSet.contains(layoutBox); }
void shrinkToFit();
private:
PlacedFloats m_placedFloats;
OutOfFlowBoxList m_outOfFlowBoxes;
UncheckedKeyHashMap<CheckedRef<const Box>, UsedVerticalMargin> m_usedVerticalMargins;
UncheckedKeyHashSet<CheckedRef<const Box>> m_clearanceSet;
};
}
}
SPECIALIZE_TYPE_TRAITS_LAYOUT_FORMATTING_STATE(BlockFormattingState, isBlockFormattingState())
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