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/*
* Copyright (C) 2022 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 "Font.h"
#include "PlacedFloats.h"
#include "StyleTextEdge.h"
#include <algorithm>
namespace WebCore {
namespace Layout {
class BlockFormattingContext;
// This class holds block level information shared across child inline formatting contexts.
class BlockLayoutState {
public:
struct LineClamp {
size_t maximumLines { 0 };
bool shouldDiscardOverflow { false };
bool isLegacy { true };
};
enum class TextBoxTrimSide : uint8_t {
Start = 1 << 0,
End = 1 << 1
};
using TextBoxTrim = OptionSet<TextBoxTrimSide>;
struct LineGrid {
LayoutSize layoutOffset;
LayoutSize gridOffset;
InlineLayoutUnit columnWidth;
LayoutUnit rowHeight;
LayoutUnit topRowOffset;
Ref<const Font> primaryFont;
std::optional<LayoutSize> paginationOrigin;
LayoutUnit pageLogicalTop;
};
BlockLayoutState(PlacedFloats&, std::optional<LineClamp> = { }, TextBoxTrim = { }, TextEdge = { }, std::optional<LayoutUnit> intrusiveInitialLetterLogicalBottom = { }, std::optional<LineGrid> lineGrid = { });
PlacedFloats& placedFloats() { return m_placedFloats; }
const PlacedFloats& placedFloats() const { return m_placedFloats; }
std::optional<LineClamp> lineClamp() const { return m_lineClamp; }
TextBoxTrim textBoxTrim() const { return m_textBoxTrim; }
TextEdge textBoxEdge() const { return m_textBoxEdge; }
std::optional<LayoutUnit> intrusiveInitialLetterLogicalBottom() const { return m_intrusiveInitialLetterLogicalBottom; }
const std::optional<LineGrid>& lineGrid() const { return m_lineGrid; }
private:
PlacedFloats& m_placedFloats;
std::optional<LineClamp> m_lineClamp;
TextBoxTrim m_textBoxTrim;
TextEdge m_textBoxEdge;
std::optional<LayoutUnit> m_intrusiveInitialLetterLogicalBottom;
std::optional<LineGrid> m_lineGrid;
};
inline BlockLayoutState::BlockLayoutState(PlacedFloats& placedFloats, std::optional<LineClamp> lineClamp, TextBoxTrim textBoxTrim, TextEdge textBoxEdge, std::optional<LayoutUnit> intrusiveInitialLetterLogicalBottom, std::optional<LineGrid> lineGrid)
: m_placedFloats(placedFloats)
, m_lineClamp(lineClamp)
, m_textBoxTrim(textBoxTrim)
, m_textBoxEdge(textBoxEdge)
, m_intrusiveInitialLetterLogicalBottom(intrusiveInitialLetterLogicalBottom)
, m_lineGrid(lineGrid)
{
}
}
}
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