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/*
* Copyright (C) 2002 Lars Knoll (knoll@kde.org)
* (C) 2002 Dirk Mueller (mueller@kde.org)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#ifndef TableLayoutAlgorithmAuto_h
#define TableLayoutAlgorithmAuto_h
#include "core/layout/TableLayoutAlgorithm.h"
#include "platform/LayoutUnit.h"
#include "platform/Length.h"
#include "wtf/Vector.h"
namespace blink {
class LayoutTable;
class LayoutTableCell;
enum CellsToProcess { AllCells, NonEmptyCells, EmptyCells };
enum DistributionMode { ExtraWidth, InitialWidth, LeftoverWidth };
enum DistributionDirection { StartToEnd, EndToStart };
class TableLayoutAlgorithmAuto final : public TableLayoutAlgorithm {
public:
TableLayoutAlgorithmAuto(LayoutTable*);
~TableLayoutAlgorithmAuto() override;
void computeIntrinsicLogicalWidths(LayoutUnit& minWidth,
LayoutUnit& maxWidth) override;
LayoutUnit scaledWidthFromPercentColumns() override {
return m_scaledWidthFromPercentColumns;
}
void applyPreferredLogicalWidthQuirks(LayoutUnit& minWidth,
LayoutUnit& maxWidth) const override;
void layout() override;
void willChangeTableLayout() override {}
private:
void fullRecalc();
void recalcColumn(unsigned effCol);
int calcEffectiveLogicalWidth();
void shrinkColumnWidth(const LengthType&, int& available);
template <typename Total,
LengthType,
CellsToProcess,
DistributionMode,
DistributionDirection>
void distributeWidthToColumns(int& available, Total);
void insertSpanCell(LayoutTableCell*);
struct Layout {
Layout()
: minLogicalWidth(0),
maxLogicalWidth(0),
effectiveMinLogicalWidth(0),
effectiveMaxLogicalWidth(0),
computedLogicalWidth(0),
emptyCellsOnly(true),
columnHasNoCells(true) {}
Length logicalWidth;
Length effectiveLogicalWidth;
int minLogicalWidth;
int maxLogicalWidth;
int effectiveMinLogicalWidth;
int effectiveMaxLogicalWidth;
int computedLogicalWidth;
bool emptyCellsOnly;
bool columnHasNoCells;
int clampedEffectiveMaxLogicalWidth() {
return std::max<int>(1, effectiveMaxLogicalWidth);
}
};
Vector<Layout, 4> m_layoutStruct;
Vector<LayoutTableCell*, 4> m_spanCells;
bool m_hasPercent : 1;
mutable bool m_effectiveLogicalWidthDirty : 1;
LayoutUnit m_scaledWidthFromPercentColumns;
};
} // namespace blink
#endif // TableLayoutAlgorithmAuto
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