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/*
* Copyright (C) 1997 Martin Jones (mjones@kde.org)
* (C) 1997 Torben Weis (weis@kde.org)
* (C) 1998 Waldo Bastian (bastian@kde.org)
* (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
*
* 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, or (at your option) any later version.
*
* 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.
*/
#pragma once
#include "RenderTable.h"
#include <wtf/Vector.h>
namespace WebCore {
class RenderTableCell;
class RenderTableRow;
enum CollapsedBorderSide {
CBSBefore,
CBSAfter,
CBSStart,
CBSEnd
};
// Helper class for paintObject.
struct CellSpan {
public:
explicit CellSpan(unsigned start, unsigned end)
: start(start)
, end(end)
{
}
unsigned start;
unsigned end;
};
class RenderTableSection final : public RenderBox {
WTF_MAKE_ISO_ALLOCATED(RenderTableSection);
public:
RenderTableSection(Element&, RenderStyle&&);
RenderTableSection(Document&, RenderStyle&&);
virtual ~RenderTableSection();
RenderTableRow* firstRow() const;
RenderTableRow* lastRow() const;
std::optional<LayoutUnit> firstLineBaseline() const override;
void addCell(RenderTableCell*, RenderTableRow* row);
LayoutUnit calcRowLogicalHeight();
void layoutRows();
void computeOverflowFromCells();
RenderTable* table() const { return downcast<RenderTable>(parent()); }
struct CellStruct {
Vector<RenderTableCell*, 1> cells;
bool inColSpan { false }; // true for columns after the first in a colspan
RenderTableCell* primaryCell() { return hasCells() ? cells[cells.size() - 1] : 0; }
const RenderTableCell* primaryCell() const { return hasCells() ? cells[cells.size() - 1] : 0; }
bool hasCells() const { return cells.size() > 0; }
};
typedef Vector<CellStruct> Row;
struct RowStruct {
Row row;
RenderTableRow* rowRenderer { nullptr };
LayoutUnit baseline;
Length logicalHeight;
};
const BorderValue& borderAdjoiningTableStart() const;
const BorderValue& borderAdjoiningTableEnd() const;
const BorderValue& borderAdjoiningStartCell(const RenderTableCell&) const;
const BorderValue& borderAdjoiningEndCell(const RenderTableCell&) const;
const RenderTableCell* firstRowCellAdjoiningTableStart() const;
const RenderTableCell* firstRowCellAdjoiningTableEnd() const;
CellStruct& cellAt(unsigned row, unsigned col);
const CellStruct& cellAt(unsigned row, unsigned col) const;
RenderTableCell* primaryCellAt(unsigned row, unsigned col);
RenderTableRow* rowRendererAt(unsigned row) const;
void appendColumn(unsigned pos);
void splitColumn(unsigned pos, unsigned first);
LayoutUnit calcOuterBorderBefore() const;
LayoutUnit calcOuterBorderAfter() const;
LayoutUnit calcOuterBorderStart() const;
LayoutUnit calcOuterBorderEnd() const;
void recalcOuterBorder();
LayoutUnit outerBorderBefore() const { return m_outerBorderBefore; }
LayoutUnit outerBorderAfter() const { return m_outerBorderAfter; }
LayoutUnit outerBorderStart() const { return m_outerBorderStart; }
LayoutUnit outerBorderEnd() const { return m_outerBorderEnd; }
LayoutUnit outerBorderLeft(const RenderStyle* styleForCellFlow) const;
LayoutUnit outerBorderRight(const RenderStyle* styleForCellFlow) const;
LayoutUnit outerBorderTop(const RenderStyle* styleForCellFlow) const;
LayoutUnit outerBorderBottom(const RenderStyle* styleForCellFlow) const;
unsigned numRows() const;
unsigned numColumns() const;
void recalcCells();
void recalcCellsIfNeeded();
void removeRedundantColumns();
bool needsCellRecalc() const { return m_needsCellRecalc; }
void setNeedsCellRecalc();
LayoutUnit rowBaseline(unsigned row);
void rowLogicalHeightChanged(unsigned rowIndex);
void clearCachedCollapsedBorders();
void removeCachedCollapsedBorders(const RenderTableCell&);
void setCachedCollapsedBorder(const RenderTableCell&, CollapsedBorderSide, CollapsedBorderValue);
CollapsedBorderValue cachedCollapsedBorder(const RenderTableCell&, CollapsedBorderSide);
// distributeExtraLogicalHeightToRows methods return the *consumed* extra logical height.
// FIXME: We may want to introduce a structure holding the in-flux layout information.
LayoutUnit distributeExtraLogicalHeightToRows(LayoutUnit extraLogicalHeight);
static RenderPtr<RenderTableSection> createAnonymousWithParentRenderer(const RenderTable&);
RenderPtr<RenderBox> createAnonymousBoxWithSameTypeAs(const RenderBox&) const override;
void paint(PaintInfo&, const LayoutPoint&) override;
void willInsertTableRow(RenderTableRow& child, RenderObject* beforeChild);
private:
void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
static RenderPtr<RenderTableSection> createTableSectionWithStyle(Document&, const RenderStyle&);
enum ShouldIncludeAllIntersectingCells {
IncludeAllIntersectingCells,
DoNotIncludeAllIntersectingCells
};
ASCIILiteral renderName() const override { return (isAnonymous() || isPseudoElement()) ? "RenderTableSection (anonymous)"_s : "RenderTableSection"_s; }
bool canHaveChildren() const override { return true; }
bool isTableSection() const override { return true; }
void willBeRemovedFromTree(IsInternalMove) override;
void layout() override;
void paintCell(RenderTableCell*, PaintInfo&, const LayoutPoint&);
void paintObject(PaintInfo&, const LayoutPoint&) override;
void paintRowGroupBorder(const PaintInfo&, bool antialias, LayoutRect, BoxSide, CSSPropertyID borderColor, BorderStyle, BorderStyle tableBorderStyle);
void paintRowGroupBorderIfRequired(const PaintInfo&, const LayoutPoint& paintOffset, unsigned row, unsigned col, BoxSide, RenderTableCell* = 0);
LayoutUnit offsetLeftForRowGroupBorder(RenderTableCell*, const LayoutRect& rowGroupRect, unsigned row);
LayoutUnit offsetTopForRowGroupBorder(RenderTableCell*, BoxSide borderSide, unsigned row);
LayoutUnit verticalRowGroupBorderHeight(RenderTableCell*, const LayoutRect& rowGroupRect, unsigned row);
LayoutUnit horizontalRowGroupBorderWidth(RenderTableCell*, const LayoutRect& rowGroupRect, unsigned row, unsigned column);
void imageChanged(WrappedImagePtr, const IntRect* = 0) override;
bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) override;
void ensureRows(unsigned);
void relayoutCellIfFlexed(RenderTableCell&, int rowIndex, int rowHeight);
void distributeExtraLogicalHeightToPercentRows(LayoutUnit& extraLogicalHeight, int totalPercent);
void distributeExtraLogicalHeightToAutoRows(LayoutUnit& extraLogicalHeight, unsigned autoRowsCount);
void distributeRemainingExtraLogicalHeight(LayoutUnit& extraLogicalHeight);
bool hasOverflowingCell() const { return m_overflowingCells.size() || m_forceSlowPaintPathWithOverflowingCell; }
void computeOverflowFromCells(unsigned totalRows, unsigned nEffCols);
CellSpan fullTableRowSpan() const;
CellSpan fullTableColumnSpan() const { return CellSpan(0, table()->columns().size()); }
// Flip the rect so it aligns with the coordinates used by the rowPos and columnPos vectors.
LayoutRect logicalRectForWritingModeAndDirection(const LayoutRect&) const;
CellSpan dirtiedRows(const LayoutRect& repaintRect) const;
CellSpan dirtiedColumns(const LayoutRect& repaintRect) const;
// These two functions take a rectangle as input that has been flipped by logicalRectForWritingModeAndDirection.
// The returned span of rows or columns is end-exclusive, and empty if start==end.
// The IncludeAllIntersectingCells argument is used to determine which cells to include when
// an edge of the flippedRect lies exactly on a cell boundary. Using IncludeAllIntersectingCells
// will return both cells, and using DoNotIncludeAllIntersectingCells will return only the cell
// that hittesting should return.
CellSpan spannedRows(const LayoutRect& flippedRect, ShouldIncludeAllIntersectingCells) const;
CellSpan spannedColumns(const LayoutRect& flippedRect, ShouldIncludeAllIntersectingCells) const;
void setLogicalPositionForCell(RenderTableCell*, unsigned effectiveColumn) const;
void firstChild() const = delete;
void lastChild() const = delete;
Vector<RowStruct> m_grid;
Vector<LayoutUnit> m_rowPos;
// the current insertion position
unsigned m_cCol { 0 };
unsigned m_cRow { 0 };
LayoutUnit m_outerBorderStart;
LayoutUnit m_outerBorderEnd;
LayoutUnit m_outerBorderBefore;
LayoutUnit m_outerBorderAfter;
// This HashSet holds the overflowing cells for faster painting.
// If we have more than gMaxAllowedOverflowingCellRatio * total cells, it will be empty
// and m_forceSlowPaintPathWithOverflowingCell will be set to save memory.
HashSet<RenderTableCell*> m_overflowingCells;
// This map holds the collapsed border values for cells with collapsed borders.
// It is held at RenderTableSection level to spare memory consumption by table cells.
HashMap<std::pair<const RenderTableCell*, int>, CollapsedBorderValue > m_cellsCollapsedBorders;
bool m_forceSlowPaintPathWithOverflowingCell { false };
bool m_hasMultipleCellLevels { false };
bool m_needsCellRecalc { false };
};
inline const BorderValue& RenderTableSection::borderAdjoiningTableStart() const
{
if (isDirectionSame(this, table()))
return style().borderStart();
return style().borderEnd();
}
inline const BorderValue& RenderTableSection::borderAdjoiningTableEnd() const
{
if (isDirectionSame(this, table()))
return style().borderEnd();
return style().borderStart();
}
inline RenderTableSection::CellStruct& RenderTableSection::cellAt(unsigned row, unsigned col)
{
recalcCellsIfNeeded();
return m_grid[row].row[col];
}
inline const RenderTableSection::CellStruct& RenderTableSection::cellAt(unsigned row, unsigned col) const
{
ASSERT(!m_needsCellRecalc);
return m_grid[row].row[col];
}
inline RenderTableCell* RenderTableSection::primaryCellAt(unsigned row, unsigned col)
{
recalcCellsIfNeeded();
CellStruct& c = m_grid[row].row[col];
return c.primaryCell();
}
inline RenderTableRow* RenderTableSection::rowRendererAt(unsigned row) const
{
ASSERT(!m_needsCellRecalc);
return m_grid[row].rowRenderer;
}
inline LayoutUnit RenderTableSection::outerBorderLeft(const RenderStyle* styleForCellFlow) const
{
if (styleForCellFlow->isHorizontalWritingMode())
return styleForCellFlow->isLeftToRightDirection() ? outerBorderStart() : outerBorderEnd();
return styleForCellFlow->isFlippedBlocksWritingMode() ? outerBorderAfter() : outerBorderBefore();
}
inline LayoutUnit RenderTableSection::outerBorderRight(const RenderStyle* styleForCellFlow) const
{
if (styleForCellFlow->isHorizontalWritingMode())
return styleForCellFlow->isLeftToRightDirection() ? outerBorderEnd() : outerBorderStart();
return styleForCellFlow->isFlippedBlocksWritingMode() ? outerBorderBefore() : outerBorderAfter();
}
inline LayoutUnit RenderTableSection::outerBorderTop(const RenderStyle* styleForCellFlow) const
{
if (styleForCellFlow->isHorizontalWritingMode())
return styleForCellFlow->isFlippedBlocksWritingMode() ? outerBorderAfter() : outerBorderBefore();
return styleForCellFlow->isLeftToRightDirection() ? outerBorderStart() : outerBorderEnd();
}
inline LayoutUnit RenderTableSection::outerBorderBottom(const RenderStyle* styleForCellFlow) const
{
if (styleForCellFlow->isHorizontalWritingMode())
return styleForCellFlow->isFlippedBlocksWritingMode() ? outerBorderBefore() : outerBorderAfter();
return styleForCellFlow->isLeftToRightDirection() ? outerBorderEnd() : outerBorderStart();
}
inline unsigned RenderTableSection::numRows() const
{
ASSERT(!m_needsCellRecalc);
return m_grid.size();
}
inline void RenderTableSection::recalcCellsIfNeeded()
{
if (m_needsCellRecalc)
recalcCells();
}
inline LayoutUnit RenderTableSection::rowBaseline(unsigned row)
{
recalcCellsIfNeeded();
return m_grid[row].baseline;
}
inline CellSpan RenderTableSection::fullTableRowSpan() const
{
ASSERT(!m_needsCellRecalc);
return CellSpan(0, m_grid.size());
}
inline RenderPtr<RenderBox> RenderTableSection::createAnonymousBoxWithSameTypeAs(const RenderBox& renderer) const
{
return RenderTableSection::createTableSectionWithStyle(renderer.document(), renderer.style());
}
} // namespace WebCore
SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderTableSection, isTableSection())