| /* |
| * 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 |