LayoutTableRow* LayoutTableRow::createAnonymousWithParent(const LayoutObject* parent)
{
LayoutTableRow* newRow = LayoutTableRow::createAnonymous(&parent->document());
RefPtr<ComputedStyle> newStyle = ComputedStyle::createAnonymousStyleWithDisplay(parent->styleRef(), TABLE_ROW);
newRow->setStyle(newStyle.release());
return newRow;
}
void TextAutosizer::inflateAutoTable(LayoutTable* table)
{
ASSERT(table);
ASSERT(!table->style()->isFixedTableLayout());
ASSERT(table->containingBlock());
Cluster* cluster = currentCluster();
if (cluster->m_root != table)
return;
// Pre-inflate cells that have enough text so that their inflated preferred widths will be used
// for column sizing.
for (LayoutObject* section = table->firstChild(); section; section = section->nextSibling()) {
if (!section->isTableSection())
continue;
for (LayoutTableRow* row = toLayoutTableSection(section)->firstRow(); row; row = row->nextRow()) {
for (LayoutTableCell* cell = row->firstCell(); cell; cell = cell->nextCell()) {
if (!cell->needsLayout())
continue;
beginLayout(cell);
inflate(cell, DescendToInnerBlocks);
endLayout(cell);
}
}
}
}
void LayoutTableCol::styleDidChange(StyleDifference diff, const ComputedStyle* oldStyle)
{
LayoutBox::styleDidChange(diff, oldStyle);
// If border was changed, notify table.
if (parent()) {
LayoutTable* table = this->table();
if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border()) {
table->invalidateCollapsedBorders();
} else if (oldStyle && oldStyle->logicalWidth() != style()->logicalWidth()) {
// FIXME : setPreferredLogicalWidthsDirty is done for all cells as of now.
// Need to find a better way so that only the cells which are changed by
// the col width should have preferred logical widths recomputed.
for (LayoutObject* child = table->children()->firstChild(); child; child = child->nextSibling()) {
if (!child->isTableSection())
continue;
LayoutTableSection* section = toLayoutTableSection(child);
for (LayoutTableRow* row = section->firstRow(); row; row = row->nextRow()) {
for (LayoutTableCell* cell = row->firstCell(); cell; cell = cell->nextCell())
cell->setPreferredLogicalWidthsDirty();
}
}
}
}
}
void TableSectionPainter::paintCell(LayoutTableCell* cell, const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
LayoutPoint cellPoint = m_layoutTableSection.flipForWritingModeForChild(cell, paintOffset);
PaintPhase paintPhase = paintInfo.phase;
LayoutTableRow* row = toLayoutTableRow(cell->parent());
if ((paintPhase == PaintPhaseBlockBackground || paintPhase == PaintPhaseChildBlockBackground)
&& BlockPainter(*cell).intersectsPaintRect(paintInfo, paintOffset)) {
// We need to handle painting a stack of backgrounds. This stack (from bottom to top) consists of
// the column group, column, row group, row, and then the cell.
LayoutTableCol* column = m_layoutTableSection.table()->colElement(cell->col());
LayoutTableCol* columnGroup = column ? column->enclosingColumnGroup() : 0;
bool columnHasBackground = column && column->hasBackground();
bool columnGroupHasBackground = columnGroup && columnGroup->hasBackground();
bool sectionHasBackground = m_layoutTableSection.hasBackground();
bool rowHasBackground = row->hasBackground();
if (columnHasBackground || columnGroupHasBackground || sectionHasBackground || rowHasBackground) {
TableCellPainter tableCellPainter(*cell);
if (!LayoutObjectDrawingRecorder::useCachedDrawingIfPossible(*paintInfo.context, *cell, DisplayItem::TableCellBackgroundFromContainers, paintOffset)) {
LayoutObjectDrawingRecorder recorder(*paintInfo.context, *cell, DisplayItem::TableCellBackgroundFromContainers, tableCellPainter.paintBounds(cellPoint, TableCellPainter::AddOffsetFromParent), paintOffset);
// Column groups and columns first.
// FIXME: Columns and column groups do not currently support opacity, and they are being painted "too late" in
// the stack, since we have already opened a transparency layer (potentially) for the table row group.
// Note that we deliberately ignore whether or not the cell has a layer, since these backgrounds paint "behind" the
// cell.
if (columnGroupHasBackground)
tableCellPainter.paintBackgroundsBehindCell(paintInfo, cellPoint, columnGroup);
if (columnHasBackground)
tableCellPainter.paintBackgroundsBehindCell(paintInfo, cellPoint, column);
// Paint the row group next.
if (sectionHasBackground)
tableCellPainter.paintBackgroundsBehindCell(paintInfo, cellPoint, &m_layoutTableSection);
// Paint the row next, but only if it doesn't have a layer. If a row has a layer, it will be responsible for
// painting the row background for the cell.
if (rowHasBackground && !row->hasSelfPaintingLayer())
tableCellPainter.paintBackgroundsBehindCell(paintInfo, cellPoint, row);
}
}
}
if ((!cell->hasSelfPaintingLayer() && !row->hasSelfPaintingLayer()))
cell->paint(paintInfo, cellPoint);
}
void TableLayoutAlgorithmFixed::willChangeTableLayout()
{
// When switching table layout algorithm, we need to dirty the preferred
// logical widths as we cleared the bits without computing them.
// (see calcWidthArray above.) This optimization is preferred to always
// computing the logical widths we never intended to use.
m_table->recalcSectionsIfNeeded();
for (LayoutTableSection* section = m_table->topNonEmptySection(); section; section = m_table->sectionBelow(section)) {
for (unsigned i = 0; i < section->numRows(); i++) {
LayoutTableRow* row = section->rowLayoutObjectAt(i);
if (!row)
continue;
for (LayoutTableCell* cell = row->firstCell(); cell; cell = cell->nextCell())
cell->setPreferredLogicalWidthsDirty();
}
}
}
LayoutTableRow* LayoutTableRow::createAnonymous(Document* document)
{
LayoutTableRow* layoutObject = new LayoutTableRow(nullptr);
layoutObject->setDocumentForAnonymous(document);
return layoutObject;
}
void TableSectionPainter::paintObject(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
LayoutRect localPaintInvalidationRect = LayoutRect(paintInfo.rect);
localPaintInvalidationRect.moveBy(-paintOffset);
LayoutRect tableAlignedRect = m_layoutTableSection.logicalRectForWritingModeAndDirection(localPaintInvalidationRect);
CellSpan dirtiedRows = m_layoutTableSection.dirtiedRows(tableAlignedRect);
CellSpan dirtiedColumns = m_layoutTableSection.dirtiedColumns(tableAlignedRect);
HashSet<LayoutTableCell*> overflowingCells = m_layoutTableSection.overflowingCells();
if (dirtiedColumns.start() < dirtiedColumns.end()) {
if (!m_layoutTableSection.hasMultipleCellLevels() && !overflowingCells.size()) {
if (paintInfo.phase == PaintPhaseCollapsedTableBorders) {
// Collapsed borders are painted from the bottom right to the top left so that precedence
// due to cell position is respected.
for (unsigned r = dirtiedRows.end(); r > dirtiedRows.start(); r--) {
unsigned row = r - 1;
for (unsigned c = dirtiedColumns.end(); c > dirtiedColumns.start(); c--) {
unsigned col = c - 1;
LayoutTableSection::CellStruct& current = m_layoutTableSection.cellAt(row, col);
LayoutTableCell* cell = current.primaryCell();
if (!cell || (row > dirtiedRows.start() && m_layoutTableSection.primaryCellAt(row - 1, col) == cell) || (col > dirtiedColumns.start() && m_layoutTableSection.primaryCellAt(row, col - 1) == cell))
continue;
LayoutPoint cellPoint = m_layoutTableSection.flipForWritingModeForChild(cell, paintOffset);
TableCellPainter(*cell).paintCollapsedBorders(paintInfo, cellPoint);
}
}
} else {
// Draw the dirty cells in the order that they appear.
for (unsigned r = dirtiedRows.start(); r < dirtiedRows.end(); r++) {
LayoutTableRow* row = m_layoutTableSection.rowLayoutObjectAt(r);
if (row && !row->hasSelfPaintingLayer())
TableRowPainter(*row).paintOutlineForRowIfNeeded(paintInfo, paintOffset);
for (unsigned c = dirtiedColumns.start(); c < dirtiedColumns.end(); c++) {
LayoutTableSection::CellStruct& current = m_layoutTableSection.cellAt(r, c);
LayoutTableCell* cell = current.primaryCell();
if (!cell || (r > dirtiedRows.start() && m_layoutTableSection.primaryCellAt(r - 1, c) == cell) || (c > dirtiedColumns.start() && m_layoutTableSection.primaryCellAt(r, c - 1) == cell))
continue;
paintCell(cell, paintInfo, paintOffset);
}
}
}
} else {
// The overflowing cells should be scarce to avoid adding a lot of cells to the HashSet.
#if ENABLE(ASSERT)
unsigned totalRows = m_layoutTableSection.numRows();
unsigned totalCols = m_layoutTableSection.table()->columns().size();
ASSERT(overflowingCells.size() < totalRows * totalCols * gMaxAllowedOverflowingCellRatioForFastPaintPath);
#endif
// To make sure we properly paint invalidate the section, we paint invalidated all the overflowing cells that we collected.
Vector<LayoutTableCell*> cells;
copyToVector(overflowingCells, cells);
HashSet<LayoutTableCell*> spanningCells;
for (unsigned r = dirtiedRows.start(); r < dirtiedRows.end(); r++) {
LayoutTableRow* row = m_layoutTableSection.rowLayoutObjectAt(r);
if (row && !row->hasSelfPaintingLayer())
TableRowPainter(*row).paintOutlineForRowIfNeeded(paintInfo, paintOffset);
for (unsigned c = dirtiedColumns.start(); c < dirtiedColumns.end(); c++) {
LayoutTableSection::CellStruct& current = m_layoutTableSection.cellAt(r, c);
if (!current.hasCells())
continue;
for (unsigned i = 0; i < current.cells.size(); ++i) {
if (overflowingCells.contains(current.cells[i]))
continue;
if (current.cells[i]->rowSpan() > 1 || current.cells[i]->colSpan() > 1) {
if (!spanningCells.add(current.cells[i]).isNewEntry)
continue;
}
cells.append(current.cells[i]);
}
}
}
// Sort the dirty cells by paint order.
if (!overflowingCells.size())
std::stable_sort(cells.begin(), cells.end(), compareCellPositions);
else
std::sort(cells.begin(), cells.end(), compareCellPositionsWithOverflowingCells);
if (paintInfo.phase == PaintPhaseCollapsedTableBorders) {
for (unsigned i = cells.size(); i > 0; --i) {
LayoutPoint cellPoint = m_layoutTableSection.flipForWritingModeForChild(cells[i - 1], paintOffset);
TableCellPainter(*cells[i - 1]).paintCollapsedBorders(paintInfo, cellPoint);
}
} else {
for (unsigned i = 0; i < cells.size(); ++i)
paintCell(cells[i], paintInfo, paintOffset);
}
}
}
}
int TableLayoutAlgorithmFixed::calcWidthArray()
{
// FIXME: We might want to wait until we have all of the first row before computing for the first time.
int usedWidth = 0;
// iterate over all <col> elements
unsigned nEffCols = m_table->numEffectiveColumns();
m_width.resize(nEffCols);
m_width.fill(Length(Auto));
unsigned currentEffectiveColumn = 0;
for (LayoutTableCol* col = m_table->firstColumn(); col; col = col->nextColumn()) {
// LayoutTableCols don't have the concept of preferred logical width, but we need to clear their dirty bits
// so that if we call setPreferredWidthsDirty(true) on a col or one of its descendants, we'll mark it's
// ancestors as dirty.
col->clearPreferredLogicalWidthsDirtyBits();
// Width specified by column-groups that have column child does not affect column width in fixed layout tables
if (col->isTableColumnGroupWithColumnChildren())
continue;
Length colStyleLogicalWidth = col->style()->logicalWidth();
int effectiveColWidth = 0;
if (colStyleLogicalWidth.isFixed() && colStyleLogicalWidth.value() > 0)
effectiveColWidth = colStyleLogicalWidth.value();
unsigned span = col->span();
while (span) {
unsigned spanInCurrentEffectiveColumn;
if (currentEffectiveColumn >= nEffCols) {
m_table->appendEffectiveColumn(span);
nEffCols++;
m_width.append(Length());
spanInCurrentEffectiveColumn = span;
} else {
if (span < m_table->spanOfEffectiveColumn(currentEffectiveColumn)) {
m_table->splitEffectiveColumn(currentEffectiveColumn, span);
nEffCols++;
m_width.append(Length());
}
spanInCurrentEffectiveColumn = m_table->spanOfEffectiveColumn(currentEffectiveColumn);
}
// TODO(alancutter): Make this work correctly for calc lengths.
if ((colStyleLogicalWidth.isFixed() || colStyleLogicalWidth.hasPercent()) && colStyleLogicalWidth.isPositive()) {
m_width[currentEffectiveColumn] = colStyleLogicalWidth;
m_width[currentEffectiveColumn] *= spanInCurrentEffectiveColumn;
usedWidth += effectiveColWidth * spanInCurrentEffectiveColumn;
}
span -= spanInCurrentEffectiveColumn;
currentEffectiveColumn++;
}
}
// Iterate over the first row in case some are unspecified.
LayoutTableSection* section = m_table->topNonEmptySection();
if (!section)
return usedWidth;
unsigned currentColumn = 0;
LayoutTableRow* firstRow = section->firstRow();
for (LayoutTableCell* cell = firstRow->firstCell(); cell; cell = cell->nextCell()) {
Length logicalWidth = cell->styleOrColLogicalWidth();
// FIXME: calc() on tables should be handled consistently with other lengths. See bug: https://crbug.com/382725
if (logicalWidth.isCalculated())
logicalWidth = Length(); // Make it Auto
unsigned span = cell->colSpan();
int fixedBorderBoxLogicalWidth = 0;
// FIXME: Support other length types. If the width is non-auto, it should probably just use
// LayoutBox::computeLogicalWidthUsing to compute the width.
if (logicalWidth.isFixed() && logicalWidth.isPositive()) {
fixedBorderBoxLogicalWidth = cell->adjustBorderBoxLogicalWidthForBoxSizing(logicalWidth.value());
logicalWidth.setValue(fixedBorderBoxLogicalWidth);
}
unsigned usedSpan = 0;
while (usedSpan < span && currentColumn < nEffCols) {
float eSpan = m_table->spanOfEffectiveColumn(currentColumn);
// Only set if no col element has already set it.
if (m_width[currentColumn].isAuto() && logicalWidth.type() != Auto) {
m_width[currentColumn] = logicalWidth;
m_width[currentColumn] *= eSpan / span;
usedWidth += fixedBorderBoxLogicalWidth * eSpan / span;
}
usedSpan += eSpan;
++currentColumn;
}
// TableLayoutAlgorithmFixed doesn't use min/maxPreferredLogicalWidths, but we need to clear the
// dirty bit on the cell so that we'll correctly mark its ancestors dirty
// in case we later call setPreferredLogicalWidthsDirty() on it later.
if (cell->preferredLogicalWidthsDirty())
cell->clearPreferredLogicalWidthsDirty();
}
return usedWidth;
}