/* * 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, 2007, 2008, 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. */ #include "config.h" #include "RenderTableCell.h" #include "CollapsedBorderValue.h" #include "FloatQuad.h" #include "GraphicsContext.h" #include "HTMLNames.h" #include "HTMLTableCellElement.h" #include "PaintInfo.h" #include "RenderTableCol.h" #include "RenderView.h" #include "StyleProperties.h" #include "TransformState.h" #include #if ENABLE(MATHML) #include "MathMLElement.h" #include "MathMLNames.h" #endif namespace WebCore { using namespace HTMLNames; struct SameSizeAsRenderTableCell : public RenderBlockFlow { unsigned bitfields; LayoutUnit paddings[2]; }; COMPILE_ASSERT(sizeof(RenderTableCell) == sizeof(SameSizeAsRenderTableCell), RenderTableCell_should_stay_small); COMPILE_ASSERT(sizeof(CollapsedBorderValue) == 12, CollapsedBorderValue_should_stay_small); RenderTableCell::RenderTableCell(Element& element, Ref&& style) : RenderBlockFlow(element, WTFMove(style)) , m_column(unsetColumnIndex) , m_cellWidthChanged(false) , m_hasColSpan(false) , m_hasRowSpan(false) , m_hasEmptyCollapsedBeforeBorder(false) , m_hasEmptyCollapsedAfterBorder(false) , m_hasEmptyCollapsedStartBorder(false) , m_hasEmptyCollapsedEndBorder(false) { // We only update the flags when notified of DOM changes in colSpanOrRowSpanChanged() // so we need to set their initial values here in case something asks for colSpan()/rowSpan() before then. updateColAndRowSpanFlags(); } RenderTableCell::RenderTableCell(Document& document, Ref&& style) : RenderBlockFlow(document, WTFMove(style)) , m_column(unsetColumnIndex) , m_cellWidthChanged(false) , m_hasColSpan(false) , m_hasRowSpan(false) , m_hasEmptyCollapsedBeforeBorder(false) , m_hasEmptyCollapsedAfterBorder(false) , m_hasEmptyCollapsedStartBorder(false) , m_hasEmptyCollapsedEndBorder(false) { } void RenderTableCell::willBeRemovedFromTree() { RenderBlockFlow::willBeRemovedFromTree(); if (!table() || !section()) return; RenderTableSection* section = this->section(); table()->invalidateCollapsedBorders(); section->setNeedsCellRecalc(); } unsigned RenderTableCell::parseColSpanFromDOM() const { ASSERT(element()); if (is(*element())) return std::min(downcast(*element()).colSpan(), maxColumnIndex); #if ENABLE(MATHML) if (element()->hasTagName(MathMLNames::mtdTag)) return std::min(downcast(*element()).colSpan(), maxColumnIndex); #endif return 1; } unsigned RenderTableCell::parseRowSpanFromDOM() const { ASSERT(element()); if (is(*element())) return std::min(downcast(*element()).rowSpan(), maxRowIndex); #if ENABLE(MATHML) if (element()->hasTagName(MathMLNames::mtdTag)) return std::min(downcast(*element()).rowSpan(), maxRowIndex); #endif return 1; } void RenderTableCell::updateColAndRowSpanFlags() { // The vast majority of table cells do not have a colspan or rowspan, // so we keep a bool to know if we need to bother reading from the DOM. m_hasColSpan = element() && parseColSpanFromDOM() != 1; m_hasRowSpan = element() && parseRowSpanFromDOM() != 1; } void RenderTableCell::colSpanOrRowSpanChanged() { ASSERT(element()); #if ENABLE(MATHML) ASSERT(element()->hasTagName(tdTag) || element()->hasTagName(thTag) || element()->hasTagName(MathMLNames::mtdTag)); #else ASSERT(element()->hasTagName(tdTag) || element()->hasTagName(thTag)); #endif updateColAndRowSpanFlags(); // FIXME: I suspect that we could return early here if !m_hasColSpan && !m_hasRowSpan. setNeedsLayoutAndPrefWidthsRecalc(); if (parent() && section()) section()->setNeedsCellRecalc(); } Length RenderTableCell::logicalWidthFromColumns(RenderTableCol* firstColForThisCell, Length widthFromStyle) const { ASSERT(firstColForThisCell && firstColForThisCell == table()->colElement(col())); RenderTableCol* tableCol = firstColForThisCell; unsigned colSpanCount = colSpan(); LayoutUnit colWidthSum = 0; for (unsigned i = 1; i <= colSpanCount; i++) { Length colWidth = tableCol->style().logicalWidth(); // Percentage value should be returned only for colSpan == 1. // Otherwise we return original width for the cell. if (!colWidth.isFixed()) { if (colSpanCount > 1) return widthFromStyle; return colWidth; } colWidthSum += colWidth.value(); tableCol = tableCol->nextColumn(); // If no next tag found for the span we just return what we have for now. if (!tableCol) break; } // Column widths specified on apply to the border box of the cell, see bug 8126. // FIXME: Why is border/padding ignored in the negative width case? if (colWidthSum > 0) return Length(std::max(0, colWidthSum - borderAndPaddingLogicalWidth()), Fixed); return Length(colWidthSum, Fixed); } void RenderTableCell::computePreferredLogicalWidths() { // The child cells rely on the grids up in the sections to do their computePreferredLogicalWidths work. Normally the sections are set up early, as table // cells are added, but relayout can cause the cells to be freed, leaving stale pointers in the sections' // grids. We must refresh those grids before the child cells try to use them. table()->recalcSectionsIfNeeded(); RenderBlockFlow::computePreferredLogicalWidths(); if (!element() || !style().autoWrap() || !element()->fastHasAttribute(nowrapAttr)) return; Length w = styleOrColLogicalWidth(); if (w.isFixed()) { // Nowrap is set, but we didn't actually use it because of the // fixed width set on the cell. Even so, it is a WinIE/Moz trait // to make the minwidth of the cell into the fixed width. They do this // even in strict mode, so do not make this a quirk. Affected the top // of hiptop.com. m_minPreferredLogicalWidth = std::max(w.value(), m_minPreferredLogicalWidth); } } void RenderTableCell::computeIntrinsicPadding(LayoutUnit rowHeight) { LayoutUnit oldIntrinsicPaddingBefore = intrinsicPaddingBefore(); LayoutUnit oldIntrinsicPaddingAfter = intrinsicPaddingAfter(); LayoutUnit logicalHeightWithoutIntrinsicPadding = logicalHeight() - oldIntrinsicPaddingBefore - oldIntrinsicPaddingAfter; LayoutUnit intrinsicPaddingBefore = 0; switch (style().verticalAlign()) { case SUB: case SUPER: case TEXT_TOP: case TEXT_BOTTOM: case LENGTH: case BASELINE: { LayoutUnit baseline = cellBaselinePosition(); if (baseline > borderAndPaddingBefore()) intrinsicPaddingBefore = section()->rowBaseline(rowIndex()) - (baseline - oldIntrinsicPaddingBefore); break; } case TOP: break; case MIDDLE: intrinsicPaddingBefore = (rowHeight - logicalHeightWithoutIntrinsicPadding) / 2; break; case BOTTOM: intrinsicPaddingBefore = rowHeight - logicalHeightWithoutIntrinsicPadding; break; case BASELINE_MIDDLE: break; } LayoutUnit intrinsicPaddingAfter = rowHeight - logicalHeightWithoutIntrinsicPadding - intrinsicPaddingBefore; setIntrinsicPaddingBefore(intrinsicPaddingBefore); setIntrinsicPaddingAfter(intrinsicPaddingAfter); // FIXME: Changing an intrinsic padding shouldn't trigger a relayout as it only shifts the cell inside the row but // doesn't change the logical height. if (intrinsicPaddingBefore != oldIntrinsicPaddingBefore || intrinsicPaddingAfter != oldIntrinsicPaddingAfter) setNeedsLayout(MarkOnlyThis); } void RenderTableCell::updateLogicalWidth() { } void RenderTableCell::setCellLogicalWidth(LayoutUnit tableLayoutLogicalWidth) { if (tableLayoutLogicalWidth == logicalWidth()) return; setNeedsLayout(MarkOnlyThis); row()->setChildNeedsLayout(MarkOnlyThis); if (!table()->selfNeedsLayout() && checkForRepaintDuringLayout()) repaint(); setLogicalWidth(tableLayoutLogicalWidth); setCellWidthChanged(true); } void RenderTableCell::layout() { StackStats::LayoutCheckPoint layoutCheckPoint; updateFirstLetter(); int oldCellBaseline = cellBaselinePosition(); layoutBlock(cellWidthChanged()); // If we have replaced content, the intrinsic height of our content may have changed since the last time we laid out. If that's the case the intrinsic padding we used // for layout (the padding required to push the contents of the cell down to the row's baseline) is included in our new height and baseline and makes both // of them wrong. So if our content's intrinsic height has changed push the new content up into the intrinsic padding and relayout so that the rest of // table and row layout can use the correct baseline and height for this cell. if (isBaselineAligned() && section()->rowBaseline(rowIndex()) && cellBaselinePosition() > section()->rowBaseline(rowIndex())) { LayoutUnit newIntrinsicPaddingBefore = std::max(0, intrinsicPaddingBefore() - std::max(0, cellBaselinePosition() - oldCellBaseline)); setIntrinsicPaddingBefore(newIntrinsicPaddingBefore); setNeedsLayout(MarkOnlyThis); layoutBlock(cellWidthChanged()); } invalidateHasEmptyCollapsedBorders(); setCellWidthChanged(false); } LayoutUnit RenderTableCell::paddingTop() const { LayoutUnit result = computedCSSPaddingTop(); if (!isHorizontalWritingMode()) return result; return result + (style().writingMode() == TopToBottomWritingMode ? intrinsicPaddingBefore() : intrinsicPaddingAfter()); } LayoutUnit RenderTableCell::paddingBottom() const { LayoutUnit result = computedCSSPaddingBottom(); if (!isHorizontalWritingMode()) return result; return result + (style().writingMode() == TopToBottomWritingMode ? intrinsicPaddingAfter() : intrinsicPaddingBefore()); } LayoutUnit RenderTableCell::paddingLeft() const { LayoutUnit result = computedCSSPaddingLeft(); if (isHorizontalWritingMode()) return result; return result + (style().writingMode() == LeftToRightWritingMode ? intrinsicPaddingBefore() : intrinsicPaddingAfter()); } LayoutUnit RenderTableCell::paddingRight() const { LayoutUnit result = computedCSSPaddingRight(); if (isHorizontalWritingMode()) return result; return result + (style().writingMode() == LeftToRightWritingMode ? intrinsicPaddingAfter() : intrinsicPaddingBefore()); } LayoutUnit RenderTableCell::paddingBefore() const { return computedCSSPaddingBefore() + intrinsicPaddingBefore(); } LayoutUnit RenderTableCell::paddingAfter() const { return computedCSSPaddingAfter() + intrinsicPaddingAfter(); } void RenderTableCell::setOverrideLogicalContentHeightFromRowHeight(LayoutUnit rowHeight) { clearIntrinsicPadding(); setOverrideLogicalContentHeight(std::max(0, rowHeight - borderAndPaddingLogicalHeight())); } LayoutSize RenderTableCell::offsetFromContainer(RenderElement& container, const LayoutPoint& point, bool* offsetDependsOnPoint) const { ASSERT(&container == this->container()); LayoutSize offset = RenderBlockFlow::offsetFromContainer(container, point, offsetDependsOnPoint); if (parent()) offset -= parentBox()->locationOffset(); return offset; } LayoutRect RenderTableCell::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const { // If the table grid is dirty, we cannot get reliable information about adjoining cells, // so we ignore outside borders. This should not be a problem because it means that // the table is going to recalculate the grid, relayout and repaint its current rect, which // includes any outside borders of this cell. if (!table()->collapseBorders() || table()->needsSectionRecalc()) return RenderBlockFlow::clippedOverflowRectForRepaint(repaintContainer); bool rtl = !styleForCellFlow().isLeftToRightDirection(); LayoutUnit outlineSize = style().outlineSize(); LayoutUnit left = std::max(borderHalfLeft(true), outlineSize); LayoutUnit right = std::max(borderHalfRight(true), outlineSize); LayoutUnit top = std::max(borderHalfTop(true), outlineSize); LayoutUnit bottom = std::max(borderHalfBottom(true), outlineSize); if ((left && !rtl) || (right && rtl)) { if (RenderTableCell* before = table()->cellBefore(this)) { top = std::max(top, before->borderHalfTop(true)); bottom = std::max(bottom, before->borderHalfBottom(true)); } } if ((left && rtl) || (right && !rtl)) { if (RenderTableCell* after = table()->cellAfter(this)) { top = std::max(top, after->borderHalfTop(true)); bottom = std::max(bottom, after->borderHalfBottom(true)); } } if (top) { if (RenderTableCell* above = table()->cellAbove(this)) { left = std::max(left, above->borderHalfLeft(true)); right = std::max(right, above->borderHalfRight(true)); } } if (bottom) { if (RenderTableCell* below = table()->cellBelow(this)) { left = std::max(left, below->borderHalfLeft(true)); right = std::max(right, below->borderHalfRight(true)); } } LayoutPoint location(std::max(left, -visualOverflowRect().x()), std::max(top, -visualOverflowRect().y())); LayoutRect r(-location.x(), -location.y(), location.x() + std::max(width() + right, visualOverflowRect().maxX()), location.y() + std::max(height() + bottom, visualOverflowRect().maxY())); // FIXME: layoutDelta needs to be applied in parts before/after transforms and // repaint containers. https://bugs.webkit.org/show_bug.cgi?id=23308 r.move(view().layoutDelta()); return computeRectForRepaint(r, repaintContainer); } LayoutRect RenderTableCell::computeRectForRepaint(const LayoutRect& r, const RenderLayerModelObject* repaintContainer, bool fixed) const { if (repaintContainer == this) return r; LayoutRect adjustedRect = r; if ((!view().layoutStateEnabled() || repaintContainer) && parent()) adjustedRect.moveBy(-parentBox()->location()); // Rows are in the same coordinate space, so don't add their offset in. return RenderBlockFlow::computeRectForRepaint(adjustedRect, repaintContainer, fixed); } LayoutUnit RenderTableCell::cellBaselinePosition() const { // : The baseline of a cell is the baseline of // the first in-flow line box in the cell, or the first in-flow table-row in the cell, whichever comes first. If there // is no such line box or table-row, the baseline is the bottom of content edge of the cell box. return firstLineBaseline().valueOr(borderAndPaddingBefore() + contentLogicalHeight()); } static inline void markCellDirtyWhenCollapsedBorderChanges(RenderTableCell* cell) { if (!cell) return; cell->setNeedsLayoutAndPrefWidthsRecalc(); } void RenderTableCell::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) { ASSERT(style().display() == TABLE_CELL); ASSERT(!row() || row()->rowIndexWasSet()); RenderBlockFlow::styleDidChange(diff, oldStyle); setHasBoxDecorations(true); if (parent() && section() && oldStyle && style().height() != oldStyle->height()) section()->rowLogicalHeightChanged(rowIndex()); // Our intrinsic padding pushes us down to align with the baseline of other cells on the row. If our vertical-align // has changed then so will the padding needed to align with other cells - clear it so we can recalculate it from scratch. if (oldStyle && style().verticalAlign() != oldStyle->verticalAlign()) clearIntrinsicPadding(); // If border was changed, notify table. RenderTable* table = this->table(); if (table && oldStyle && oldStyle->border() != style().border()) { table->invalidateCollapsedBorders(this); if (table->collapseBorders() && diff == StyleDifferenceLayout) { markCellDirtyWhenCollapsedBorderChanges(table->cellBelow(this)); markCellDirtyWhenCollapsedBorderChanges(table->cellAbove(this)); markCellDirtyWhenCollapsedBorderChanges(table->cellBefore(this)); markCellDirtyWhenCollapsedBorderChanges(table->cellAfter(this)); } } } // The following rules apply for resolving conflicts and figuring out which border // to use. // (1) Borders with the 'border-style' of 'hidden' take precedence over all other conflicting // borders. Any border with this value suppresses all borders at this location. // (2) Borders with a style of 'none' have the lowest priority. Only if the border properties of all // the elements meeting at this edge are 'none' will the border be omitted (but note that 'none' is // the default value for the border style.) // (3) If none of the styles are 'hidden' and at least one of them is not 'none', then narrow borders // are discarded in favor of wider ones. If several have the same 'border-width' then styles are preferred // in this order: 'double', 'solid', 'dashed', 'dotted', 'ridge', 'outset', 'groove', and the lowest: 'inset'. // (4) If border styles differ only in color, then a style set on a cell wins over one on a row, // which wins over a row group, column, column group and, lastly, table. It is undefined which color // is used when two elements of the same type disagree. static int compareBorders(const CollapsedBorderValue& border1, const CollapsedBorderValue& border2) { // Sanity check the values passed in. The null border have lowest priority. if (!border2.exists()) { if (!border1.exists()) return 0; return 1; } if (!border1.exists()) return -1; // Rule #1 above. if (border2.style() == BHIDDEN) { if (border1.style() == BHIDDEN) return 0; return -1; } if (border1.style() == BHIDDEN) return 1; // Rule #2 above. A style of 'none' has lowest priority and always loses to any other border. if (border2.style() == BNONE) { if (border1.style() == BNONE) return 0; return 1; } if (border1.style() == BNONE) return -1; // The first part of rule #3 above. Wider borders win. if (border1.width() != border2.width()) return border1.width() < border2.width() ? -1 : 1; // The borders have equal width. Sort by border style. if (border1.style() != border2.style()) return border1.style() < border2.style() ? -1 : 1; // The border have the same width and style. Rely on precedence (cell over row over row group, etc.) if (border1.precedence() == border2.precedence()) return 0; return border1.precedence() < border2.precedence() ? -1 : 1; } static CollapsedBorderValue chooseBorder(const CollapsedBorderValue& border1, const CollapsedBorderValue& border2) { const CollapsedBorderValue& border = compareBorders(border1, border2) < 0 ? border2 : border1; return border.style() == BHIDDEN ? CollapsedBorderValue() : border; } bool RenderTableCell::hasStartBorderAdjoiningTable() const { bool isStartColumn = !col(); bool isEndColumn = table()->colToEffCol(col() + colSpan() - 1) == table()->numEffCols() - 1; bool hasSameDirectionAsTable = hasSameDirectionAs(section()); // The table direction determines the row direction. In mixed directionality, we cannot guarantee that // we have a common border with the table (think a ltr table with rtl start cell). return (isStartColumn && hasSameDirectionAsTable) || (isEndColumn && !hasSameDirectionAsTable); } bool RenderTableCell::hasEndBorderAdjoiningTable() const { bool isStartColumn = !col(); bool isEndColumn = table()->colToEffCol(col() + colSpan() - 1) == table()->numEffCols() - 1; bool hasSameDirectionAsTable = hasSameDirectionAs(section()); // The table direction determines the row direction. In mixed directionality, we cannot guarantee that // we have a common border with the table (think a ltr table with ltr end cell). return (isStartColumn && !hasSameDirectionAsTable) || (isEndColumn && hasSameDirectionAsTable); } static CollapsedBorderValue emptyBorder() { return CollapsedBorderValue(BorderValue(), Color(), BCELL); } CollapsedBorderValue RenderTableCell::collapsedStartBorder(IncludeBorderColorOrNot includeColor) const { if (!table() || !section()) return emptyBorder(); if (m_hasEmptyCollapsedStartBorder) return emptyBorder(); if (table()->collapsedBordersAreValid()) return section()->cachedCollapsedBorder(*this, CBSStart); CollapsedBorderValue result = computeCollapsedStartBorder(includeColor); setHasEmptyCollapsedBorder(CBSStart, !result.width()); if (includeColor && !m_hasEmptyCollapsedStartBorder) section()->setCachedCollapsedBorder(*this, CBSStart, result); return result; } CollapsedBorderValue RenderTableCell::computeCollapsedStartBorder(IncludeBorderColorOrNot includeColor) const { // For the start border, we need to check, in order of precedence: // (1) Our start border. int startColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderStartColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : 0; int endColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderEndColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : 0; CollapsedBorderValue result(style().borderStart(), includeColor ? style().visitedDependentColor(startColorProperty) : Color(), BCELL); RenderTable* table = this->table(); if (!table) return result; // (2) The end border of the preceding cell. RenderTableCell* cellBefore = table->cellBefore(this); if (cellBefore) { CollapsedBorderValue cellBeforeAdjoiningBorder = CollapsedBorderValue(cellBefore->borderAdjoiningCellAfter(this), includeColor ? cellBefore->style().visitedDependentColor(endColorProperty) : Color(), BCELL); // |result| should be the 2nd argument as |cellBefore| should win in case of equality per CSS 2.1 (Border conflict resolution, point 4). result = chooseBorder(cellBeforeAdjoiningBorder, result); if (!result.exists()) return result; } bool startBorderAdjoinsTable = hasStartBorderAdjoiningTable(); if (startBorderAdjoinsTable) { // (3) Our row's start border. result = chooseBorder(result, CollapsedBorderValue(row()->borderAdjoiningStartCell(this), includeColor ? parent()->style().visitedDependentColor(startColorProperty) : Color(), BROW)); if (!result.exists()) return result; // (4) Our row group's start border. result = chooseBorder(result, CollapsedBorderValue(section()->borderAdjoiningStartCell(this), includeColor ? section()->style().visitedDependentColor(startColorProperty) : Color(), BROWGROUP)); if (!result.exists()) return result; } // (5) Our column and column group's start borders. bool startColEdge; bool endColEdge; if (RenderTableCol* colElt = table->colElement(col(), &startColEdge, &endColEdge)) { if (colElt->isTableColumnGroup() && startColEdge) { // The |colElt| is a column group and is also the first colgroup (in case of spanned colgroups). result = chooseBorder(result, CollapsedBorderValue(colElt->borderAdjoiningCellStartBorder(this), includeColor ? colElt->style().visitedDependentColor(startColorProperty) : Color(), BCOLGROUP)); if (!result.exists()) return result; } else if (!colElt->isTableColumnGroup()) { // We first consider the |colElt| and irrespective of whether it is a spanned col or not, we apply // its start border. This is as per HTML5 which states that: "For the purposes of the CSS table model, // the col element is expected to be treated as if it was present as many times as its span attribute specifies". result = chooseBorder(result, CollapsedBorderValue(colElt->borderAdjoiningCellStartBorder(this), includeColor ? colElt->style().visitedDependentColor(startColorProperty) : Color(), BCOL)); if (!result.exists()) return result; // Next, apply the start border of the enclosing colgroup but only if it is adjacent to the cell's edge. if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroupIfAdjacentBefore()) { result = chooseBorder(result, CollapsedBorderValue(enclosingColumnGroup->borderAdjoiningCellStartBorder(this), includeColor ? enclosingColumnGroup->style().visitedDependentColor(startColorProperty) : Color(), BCOLGROUP)); if (!result.exists()) return result; } } } // (6) The end border of the preceding column. if (cellBefore) { if (RenderTableCol* colElt = table->colElement(col() - 1, &startColEdge, &endColEdge)) { if (colElt->isTableColumnGroup() && endColEdge) { // The element is a colgroup and is also the last colgroup (in case of spanned colgroups). result = chooseBorder(CollapsedBorderValue(colElt->borderAdjoiningCellAfter(this), includeColor ? colElt->style().visitedDependentColor(endColorProperty) : Color(), BCOLGROUP), result); if (!result.exists()) return result; } else if (colElt->isTableColumn()) { // Resolve the collapsing border against the col's border ignoring any 'span' as per HTML5. result = chooseBorder(CollapsedBorderValue(colElt->borderAdjoiningCellAfter(this), includeColor ? colElt->style().visitedDependentColor(endColorProperty) : Color(), BCOL), result); if (!result.exists()) return result; // Next, if the previous col has a parent colgroup then its end border should be applied // but only if it is adjacent to the cell's edge. if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroupIfAdjacentAfter()) { result = chooseBorder(CollapsedBorderValue(enclosingColumnGroup->borderAdjoiningCellEndBorder(this), includeColor ? enclosingColumnGroup->style().visitedDependentColor(endColorProperty) : Color(), BCOLGROUP), result); if (!result.exists()) return result; } } } } if (startBorderAdjoinsTable) { // (7) The table's start border. result = chooseBorder(result, CollapsedBorderValue(table->tableStartBorderAdjoiningCell(this), includeColor ? table->style().visitedDependentColor(startColorProperty) : Color(), BTABLE)); if (!result.exists()) return result; } return result; } CollapsedBorderValue RenderTableCell::collapsedEndBorder(IncludeBorderColorOrNot includeColor) const { if (!table() || !section()) return emptyBorder(); if (m_hasEmptyCollapsedEndBorder) return emptyBorder(); if (table()->collapsedBordersAreValid()) return section()->cachedCollapsedBorder(*this, CBSEnd); CollapsedBorderValue result = computeCollapsedEndBorder(includeColor); setHasEmptyCollapsedBorder(CBSEnd, !result.width()); if (includeColor && !m_hasEmptyCollapsedEndBorder) section()->setCachedCollapsedBorder(*this, CBSEnd, result); return result; } CollapsedBorderValue RenderTableCell::computeCollapsedEndBorder(IncludeBorderColorOrNot includeColor) const { // For end border, we need to check, in order of precedence: // (1) Our end border. int startColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderStartColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : 0; int endColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderEndColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : 0; CollapsedBorderValue result = CollapsedBorderValue(style().borderEnd(), includeColor ? style().visitedDependentColor(endColorProperty) : Color(), BCELL); RenderTable* table = this->table(); if (!table) return result; // Note: We have to use the effective column information instead of whether we have a cell after as a table doesn't // have to be regular (any row can have less cells than the total cell count). bool isEndColumn = table->colToEffCol(col() + colSpan() - 1) == table->numEffCols() - 1; // (2) The start border of the following cell. if (!isEndColumn) { if (RenderTableCell* cellAfter = table->cellAfter(this)) { CollapsedBorderValue cellAfterAdjoiningBorder = CollapsedBorderValue(cellAfter->borderAdjoiningCellBefore(this), includeColor ? cellAfter->style().visitedDependentColor(startColorProperty) : Color(), BCELL); result = chooseBorder(result, cellAfterAdjoiningBorder); if (!result.exists()) return result; } } bool endBorderAdjoinsTable = hasEndBorderAdjoiningTable(); if (endBorderAdjoinsTable) { // (3) Our row's end border. result = chooseBorder(result, CollapsedBorderValue(row()->borderAdjoiningEndCell(this), includeColor ? parent()->style().visitedDependentColor(endColorProperty) : Color(), BROW)); if (!result.exists()) return result; // (4) Our row group's end border. result = chooseBorder(result, CollapsedBorderValue(section()->borderAdjoiningEndCell(this), includeColor ? section()->style().visitedDependentColor(endColorProperty) : Color(), BROWGROUP)); if (!result.exists()) return result; } // (5) Our column and column group's end borders. bool startColEdge; bool endColEdge; if (RenderTableCol* colElt = table->colElement(col() + colSpan() - 1, &startColEdge, &endColEdge)) { if (colElt->isTableColumnGroup() && endColEdge) { // The element is a colgroup and is also the last colgroup (in case of spanned colgroups). result = chooseBorder(result, CollapsedBorderValue(colElt->borderAdjoiningCellEndBorder(this), includeColor ? colElt->style().visitedDependentColor(endColorProperty) : Color(), BCOLGROUP)); if (!result.exists()) return result; } else if (!colElt->isTableColumnGroup()) { // First apply the end border of the column irrespective of whether it is spanned or not. This is as per // HTML5 which states that: "For the purposes of the CSS table model, the col element is expected to be // treated as if it was present as many times as its span attribute specifies". result = chooseBorder(result, CollapsedBorderValue(colElt->borderAdjoiningCellEndBorder(this), includeColor ? colElt->style().visitedDependentColor(endColorProperty) : Color(), BCOL)); if (!result.exists()) return result; // Next, if it has a parent colgroup then we apply its end border but only if it is adjacent to the cell. if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroupIfAdjacentAfter()) { result = chooseBorder(result, CollapsedBorderValue(enclosingColumnGroup->borderAdjoiningCellEndBorder(this), includeColor ? enclosingColumnGroup->style().visitedDependentColor(endColorProperty) : Color(), BCOLGROUP)); if (!result.exists()) return result; } } } // (6) The start border of the next column. if (!isEndColumn) { if (RenderTableCol* colElt = table->colElement(col() + colSpan(), &startColEdge, &endColEdge)) { if (colElt->isTableColumnGroup() && startColEdge) { // This case is a colgroup without any col, we only compute it if it is adjacent to the cell's edge. result = chooseBorder(result, CollapsedBorderValue(colElt->borderAdjoiningCellBefore(this), includeColor ? colElt->style().visitedDependentColor(startColorProperty) : Color(), BCOLGROUP)); if (!result.exists()) return result; } else if (colElt->isTableColumn()) { // Resolve the collapsing border against the col's border ignoring any 'span' as per HTML5. result = chooseBorder(result, CollapsedBorderValue(colElt->borderAdjoiningCellBefore(this), includeColor ? colElt->style().visitedDependentColor(startColorProperty) : Color(), BCOL)); if (!result.exists()) return result; // If we have a parent colgroup, resolve the border only if it is adjacent to the cell. if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroupIfAdjacentBefore()) { result = chooseBorder(result, CollapsedBorderValue(enclosingColumnGroup->borderAdjoiningCellStartBorder(this), includeColor ? enclosingColumnGroup->style().visitedDependentColor(startColorProperty) : Color(), BCOLGROUP)); if (!result.exists()) return result; } } } } if (endBorderAdjoinsTable) { // (7) The table's end border. result = chooseBorder(result, CollapsedBorderValue(table->tableEndBorderAdjoiningCell(this), includeColor ? table->style().visitedDependentColor(endColorProperty) : Color(), BTABLE)); if (!result.exists()) return result; } return result; } CollapsedBorderValue RenderTableCell::collapsedBeforeBorder(IncludeBorderColorOrNot includeColor) const { if (!table() || !section()) return emptyBorder(); if (m_hasEmptyCollapsedBeforeBorder) return emptyBorder(); if (table()->collapsedBordersAreValid()) return section()->cachedCollapsedBorder(*this, CBSBefore); CollapsedBorderValue result = computeCollapsedBeforeBorder(includeColor); setHasEmptyCollapsedBorder(CBSBefore, !result.width()); if (includeColor && !m_hasEmptyCollapsedBeforeBorder) section()->setCachedCollapsedBorder(*this, CBSBefore, result); return result; } CollapsedBorderValue RenderTableCell::computeCollapsedBeforeBorder(IncludeBorderColorOrNot includeColor) const { // For before border, we need to check, in order of precedence: // (1) Our before border. int beforeColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderBeforeColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : 0; int afterColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderAfterColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : 0; CollapsedBorderValue result = CollapsedBorderValue(style().borderBefore(), includeColor ? style().visitedDependentColor(beforeColorProperty) : Color(), BCELL); RenderTable* table = this->table(); if (!table) return result; RenderTableCell* prevCell = table->cellAbove(this); if (prevCell) { // (2) A before cell's after border. result = chooseBorder(CollapsedBorderValue(prevCell->style().borderAfter(), includeColor ? prevCell->style().visitedDependentColor(afterColorProperty) : Color(), BCELL), result); if (!result.exists()) return result; } // (3) Our row's before border. result = chooseBorder(result, CollapsedBorderValue(parent()->style().borderBefore(), includeColor ? parent()->style().visitedDependentColor(beforeColorProperty) : Color(), BROW)); if (!result.exists()) return result; // (4) The previous row's after border. if (prevCell) { RenderObject* prevRow = 0; if (prevCell->section() == section()) prevRow = parent()->previousSibling(); else prevRow = prevCell->section()->lastRow(); if (prevRow) { result = chooseBorder(CollapsedBorderValue(prevRow->style().borderAfter(), includeColor ? prevRow->style().visitedDependentColor(afterColorProperty) : Color(), BROW), result); if (!result.exists()) return result; } } // Now check row groups. RenderTableSection* currSection = section(); if (!rowIndex()) { // (5) Our row group's before border. result = chooseBorder(result, CollapsedBorderValue(currSection->style().borderBefore(), includeColor ? currSection->style().visitedDependentColor(beforeColorProperty) : Color(), BROWGROUP)); if (!result.exists()) return result; // (6) Previous row group's after border. currSection = table->sectionAbove(currSection, SkipEmptySections); if (currSection) { result = chooseBorder(CollapsedBorderValue(currSection->style().borderAfter(), includeColor ? currSection->style().visitedDependentColor(afterColorProperty) : Color(), BROWGROUP), result); if (!result.exists()) return result; } } if (!currSection) { // (8) Our column and column group's before borders. RenderTableCol* colElt = table->colElement(col()); if (colElt) { result = chooseBorder(result, CollapsedBorderValue(colElt->style().borderBefore(), includeColor ? colElt->style().visitedDependentColor(beforeColorProperty) : Color(), BCOL)); if (!result.exists()) return result; if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroup()) { result = chooseBorder(result, CollapsedBorderValue(enclosingColumnGroup->style().borderBefore(), includeColor ? enclosingColumnGroup->style().visitedDependentColor(beforeColorProperty) : Color(), BCOLGROUP)); if (!result.exists()) return result; } } // (9) The table's before border. result = chooseBorder(result, CollapsedBorderValue(table->style().borderBefore(), includeColor ? table->style().visitedDependentColor(beforeColorProperty) : Color(), BTABLE)); if (!result.exists()) return result; } return result; } CollapsedBorderValue RenderTableCell::collapsedAfterBorder(IncludeBorderColorOrNot includeColor) const { if (!table() || !section()) return emptyBorder(); if (m_hasEmptyCollapsedAfterBorder) return emptyBorder(); if (table()->collapsedBordersAreValid()) return section()->cachedCollapsedBorder(*this, CBSAfter); CollapsedBorderValue result = computeCollapsedAfterBorder(includeColor); setHasEmptyCollapsedBorder(CBSAfter, !result.width()); if (includeColor && !m_hasEmptyCollapsedAfterBorder) section()->setCachedCollapsedBorder(*this, CBSAfter, result); return result; } CollapsedBorderValue RenderTableCell::computeCollapsedAfterBorder(IncludeBorderColorOrNot includeColor) const { // For after border, we need to check, in order of precedence: // (1) Our after border. int beforeColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderBeforeColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : 0; int afterColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyWebkitBorderAfterColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : 0; CollapsedBorderValue result = CollapsedBorderValue(style().borderAfter(), includeColor ? style().visitedDependentColor(afterColorProperty) : Color(), BCELL); RenderTable* table = this->table(); if (!table) return result; RenderTableCell* nextCell = table->cellBelow(this); if (nextCell) { // (2) An after cell's before border. result = chooseBorder(result, CollapsedBorderValue(nextCell->style().borderBefore(), includeColor ? nextCell->style().visitedDependentColor(beforeColorProperty) : Color(), BCELL)); if (!result.exists()) return result; } // (3) Our row's after border. (FIXME: Deal with rowspan!) result = chooseBorder(result, CollapsedBorderValue(parent()->style().borderAfter(), includeColor ? parent()->style().visitedDependentColor(afterColorProperty) : Color(), BROW)); if (!result.exists()) return result; // (4) The next row's before border. if (nextCell) { result = chooseBorder(result, CollapsedBorderValue(nextCell->parent()->style().borderBefore(), includeColor ? nextCell->parent()->style().visitedDependentColor(beforeColorProperty) : Color(), BROW)); if (!result.exists()) return result; } // Now check row groups. RenderTableSection* currSection = section(); if (rowIndex() + rowSpan() >= currSection->numRows()) { // (5) Our row group's after border. result = chooseBorder(result, CollapsedBorderValue(currSection->style().borderAfter(), includeColor ? currSection->style().visitedDependentColor(afterColorProperty) : Color(), BROWGROUP)); if (!result.exists()) return result; // (6) Following row group's before border. currSection = table->sectionBelow(currSection, SkipEmptySections); if (currSection) { result = chooseBorder(result, CollapsedBorderValue(currSection->style().borderBefore(), includeColor ? currSection->style().visitedDependentColor(beforeColorProperty) : Color(), BROWGROUP)); if (!result.exists()) return result; } } if (!currSection) { // (8) Our column and column group's after borders. RenderTableCol* colElt = table->colElement(col()); if (colElt) { result = chooseBorder(result, CollapsedBorderValue(colElt->style().borderAfter(), includeColor ? colElt->style().visitedDependentColor(afterColorProperty) : Color(), BCOL)); if (!result.exists()) return result; if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroup()) { result = chooseBorder(result, CollapsedBorderValue(enclosingColumnGroup->style().borderAfter(), includeColor ? enclosingColumnGroup->style().visitedDependentColor(afterColorProperty) : Color(), BCOLGROUP)); if (!result.exists()) return result; } } // (9) The table's after border. result = chooseBorder(result, CollapsedBorderValue(table->style().borderAfter(), includeColor ? table->style().visitedDependentColor(afterColorProperty) : Color(), BTABLE)); if (!result.exists()) return result; } return result; } inline CollapsedBorderValue RenderTableCell::cachedCollapsedLeftBorder(const RenderStyle& styleForCellFlow) const { if (styleForCellFlow.isHorizontalWritingMode()) return styleForCellFlow.isLeftToRightDirection() ? section()->cachedCollapsedBorder(*this, CBSStart) : section()->cachedCollapsedBorder(*this, CBSEnd); return styleForCellFlow.isFlippedBlocksWritingMode() ? section()->cachedCollapsedBorder(*this, CBSAfter) : section()->cachedCollapsedBorder(*this, CBSBefore); } inline CollapsedBorderValue RenderTableCell::cachedCollapsedRightBorder(const RenderStyle& styleForCellFlow) const { if (styleForCellFlow.isHorizontalWritingMode()) return styleForCellFlow.isLeftToRightDirection() ? section()->cachedCollapsedBorder(*this, CBSEnd) : section()->cachedCollapsedBorder(*this, CBSStart); return styleForCellFlow.isFlippedBlocksWritingMode() ? section()->cachedCollapsedBorder(*this, CBSBefore) : section()->cachedCollapsedBorder(*this, CBSAfter); } inline CollapsedBorderValue RenderTableCell::cachedCollapsedTopBorder(const RenderStyle& styleForCellFlow) const { if (styleForCellFlow.isHorizontalWritingMode()) return styleForCellFlow.isFlippedBlocksWritingMode() ? section()->cachedCollapsedBorder(*this, CBSAfter) : section()->cachedCollapsedBorder(*this, CBSBefore); return styleForCellFlow.isLeftToRightDirection() ? section()->cachedCollapsedBorder(*this, CBSStart) : section()->cachedCollapsedBorder(*this, CBSEnd); } inline CollapsedBorderValue RenderTableCell::cachedCollapsedBottomBorder(const RenderStyle& styleForCellFlow) const { if (styleForCellFlow.isHorizontalWritingMode()) return styleForCellFlow.isFlippedBlocksWritingMode() ? section()->cachedCollapsedBorder(*this, CBSBefore) : section()->cachedCollapsedBorder(*this, CBSAfter); return styleForCellFlow.isLeftToRightDirection() ? section()->cachedCollapsedBorder(*this, CBSEnd) : section()->cachedCollapsedBorder(*this, CBSStart); } LayoutUnit RenderTableCell::borderLeft() const { RenderTable* table = this->table(); if (!table) return RenderBlockFlow::borderLeft(); return table->collapseBorders() ? borderHalfLeft(false) : RenderBlockFlow::borderLeft(); } LayoutUnit RenderTableCell::borderRight() const { RenderTable* table = this->table(); if (!table) return RenderBlockFlow::borderRight(); return table->collapseBorders() ? borderHalfRight(false) : RenderBlockFlow::borderRight(); } LayoutUnit RenderTableCell::borderTop() const { RenderTable* table = this->table(); if (!table) return RenderBlockFlow::borderTop(); return table->collapseBorders() ? borderHalfTop(false) : RenderBlockFlow::borderTop(); } LayoutUnit RenderTableCell::borderBottom() const { RenderTable* table = this->table(); if (!table) return RenderBlockFlow::borderBottom(); return table->collapseBorders() ? borderHalfBottom(false) : RenderBlockFlow::borderBottom(); } // FIXME: https://bugs.webkit.org/show_bug.cgi?id=46191, make the collapsed border drawing // work with different block flow values instead of being hard-coded to top-to-bottom. LayoutUnit RenderTableCell::borderStart() const { RenderTable* table = this->table(); if (!table) return RenderBlockFlow::borderStart(); return table->collapseBorders() ? borderHalfStart(false) : RenderBlockFlow::borderStart(); } LayoutUnit RenderTableCell::borderEnd() const { RenderTable* table = this->table(); if (!table) return RenderBlockFlow::borderEnd(); return table->collapseBorders() ? borderHalfEnd(false) : RenderBlockFlow::borderEnd(); } LayoutUnit RenderTableCell::borderBefore() const { RenderTable* table = this->table(); if (!table) return RenderBlockFlow::borderBefore(); return table->collapseBorders() ? borderHalfBefore(false) : RenderBlockFlow::borderBefore(); } LayoutUnit RenderTableCell::borderAfter() const { RenderTable* table = this->table(); if (!table) return RenderBlockFlow::borderAfter(); return table->collapseBorders() ? borderHalfAfter(false) : RenderBlockFlow::borderAfter(); } LayoutUnit RenderTableCell::borderHalfLeft(bool outer) const { const RenderStyle& styleForCellFlow = this->styleForCellFlow(); if (styleForCellFlow.isHorizontalWritingMode()) return styleForCellFlow.isLeftToRightDirection() ? borderHalfStart(outer) : borderHalfEnd(outer); return styleForCellFlow.isFlippedBlocksWritingMode() ? borderHalfAfter(outer) : borderHalfBefore(outer); } LayoutUnit RenderTableCell::borderHalfRight(bool outer) const { const RenderStyle& styleForCellFlow = this->styleForCellFlow(); if (styleForCellFlow.isHorizontalWritingMode()) return styleForCellFlow.isLeftToRightDirection() ? borderHalfEnd(outer) : borderHalfStart(outer); return styleForCellFlow.isFlippedBlocksWritingMode() ? borderHalfBefore(outer) : borderHalfAfter(outer); } LayoutUnit RenderTableCell::borderHalfTop(bool outer) const { const RenderStyle& styleForCellFlow = this->styleForCellFlow(); if (styleForCellFlow.isHorizontalWritingMode()) return styleForCellFlow.isFlippedBlocksWritingMode() ? borderHalfAfter(outer) : borderHalfBefore(outer); return styleForCellFlow.isLeftToRightDirection() ? borderHalfStart(outer) : borderHalfEnd(outer); } LayoutUnit RenderTableCell::borderHalfBottom(bool outer) const { const RenderStyle& styleForCellFlow = this->styleForCellFlow(); if (styleForCellFlow.isHorizontalWritingMode()) return styleForCellFlow.isFlippedBlocksWritingMode() ? borderHalfBefore(outer) : borderHalfAfter(outer); return styleForCellFlow.isLeftToRightDirection() ? borderHalfEnd(outer) : borderHalfStart(outer); } LayoutUnit RenderTableCell::borderHalfStart(bool outer) const { CollapsedBorderValue border = collapsedStartBorder(DoNotIncludeBorderColor); if (border.exists()) return floorToInt((border.width() + ((styleForCellFlow().isLeftToRightDirection() ^ outer) ? 1 : 0)) / 2); // Give the extra pixel to top and left. return 0; } LayoutUnit RenderTableCell::borderHalfEnd(bool outer) const { CollapsedBorderValue border = collapsedEndBorder(DoNotIncludeBorderColor); if (border.exists()) return floorToInt((border.width() + ((styleForCellFlow().isLeftToRightDirection() ^ outer) ? 0 : 1)) / 2); return 0; } LayoutUnit RenderTableCell::borderHalfBefore(bool outer) const { CollapsedBorderValue border = collapsedBeforeBorder(DoNotIncludeBorderColor); if (border.exists()) return floorToInt((border.width() + ((styleForCellFlow().isFlippedBlocksWritingMode() ^ outer) ? 0 : 1)) / 2); // Give the extra pixel to top and left. return 0; } LayoutUnit RenderTableCell::borderHalfAfter(bool outer) const { CollapsedBorderValue border = collapsedAfterBorder(DoNotIncludeBorderColor); if (border.exists()) return floorToInt((border.width() + ((styleForCellFlow().isFlippedBlocksWritingMode() ^ outer) ? 1 : 0)) / 2); return 0; } void RenderTableCell::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset) { ASSERT(paintInfo.phase != PaintPhaseCollapsedTableBorders); RenderBlockFlow::paint(paintInfo, paintOffset); } struct CollapsedBorder { CollapsedBorderValue borderValue; BoxSide side; bool shouldPaint; LayoutUnit x1; LayoutUnit y1; LayoutUnit x2; LayoutUnit y2; EBorderStyle style; }; class CollapsedBorders { public: CollapsedBorders() : m_count(0) { } void addBorder(const CollapsedBorderValue& borderValue, BoxSide borderSide, bool shouldPaint, LayoutUnit x1, LayoutUnit y1, LayoutUnit x2, LayoutUnit y2, EBorderStyle borderStyle) { if (borderValue.exists() && shouldPaint) { m_borders[m_count].borderValue = borderValue; m_borders[m_count].side = borderSide; m_borders[m_count].shouldPaint = shouldPaint; m_borders[m_count].x1 = x1; m_borders[m_count].x2 = x2; m_borders[m_count].y1 = y1; m_borders[m_count].y2 = y2; m_borders[m_count].style = borderStyle; m_count++; } } CollapsedBorder* nextBorder() { for (unsigned i = 0; i < m_count; i++) { if (m_borders[i].borderValue.exists() && m_borders[i].shouldPaint) { m_borders[i].shouldPaint = false; return &m_borders[i]; } } return 0; } CollapsedBorder m_borders[4]; unsigned m_count; }; static void addBorderStyle(RenderTable::CollapsedBorderValues& borderValues, CollapsedBorderValue borderValue) { if (!borderValue.exists()) return; size_t count = borderValues.size(); for (size_t i = 0; i < count; ++i) if (borderValues[i].isSameIgnoringColor(borderValue)) return; borderValues.append(borderValue); } void RenderTableCell::collectBorderValues(RenderTable::CollapsedBorderValues& borderValues) const { addBorderStyle(borderValues, collapsedStartBorder()); addBorderStyle(borderValues, collapsedEndBorder()); addBorderStyle(borderValues, collapsedBeforeBorder()); addBorderStyle(borderValues, collapsedAfterBorder()); } static int compareBorderValuesForQSort(const void* pa, const void* pb) { const CollapsedBorderValue* a = static_cast(pa); const CollapsedBorderValue* b = static_cast(pb); if (a->isSameIgnoringColor(*b)) return 0; return compareBorders(*a, *b); } void RenderTableCell::sortBorderValues(RenderTable::CollapsedBorderValues& borderValues) { qsort(borderValues.data(), borderValues.size(), sizeof(CollapsedBorderValue), compareBorderValuesForQSort); } void RenderTableCell::paintCollapsedBorders(PaintInfo& paintInfo, const LayoutPoint& paintOffset) { ASSERT(paintInfo.phase == PaintPhaseCollapsedTableBorders); if (!paintInfo.shouldPaintWithinRoot(*this) || style().visibility() != VISIBLE) return; LayoutRect localRepaintRect = paintInfo.rect; LayoutRect paintRect = LayoutRect(paintOffset + location(), frameRect().size()); if (paintRect.y() - table()->outerBorderTop() >= localRepaintRect.maxY()) return; if (paintRect.maxY() + table()->outerBorderBottom() <= localRepaintRect.y()) return; GraphicsContext& graphicsContext = paintInfo.context(); if (!table()->currentBorderValue() || graphicsContext.paintingDisabled()) return; const RenderStyle& styleForCellFlow = this->styleForCellFlow(); CollapsedBorderValue leftVal = cachedCollapsedLeftBorder(styleForCellFlow); CollapsedBorderValue rightVal = cachedCollapsedRightBorder(styleForCellFlow); CollapsedBorderValue topVal = cachedCollapsedTopBorder(styleForCellFlow); CollapsedBorderValue bottomVal = cachedCollapsedBottomBorder(styleForCellFlow); // Adjust our x/y/width/height so that we paint the collapsed borders at the correct location. LayoutUnit topWidth = topVal.width(); LayoutUnit bottomWidth = bottomVal.width(); LayoutUnit leftWidth = leftVal.width(); LayoutUnit rightWidth = rightVal.width(); LayoutRect borderRect = LayoutRect(paintRect.x() - floorToInt(leftWidth / 2), paintRect.y() - floorToInt(topWidth / 2), paintRect.width() + floorToInt(leftWidth / 2) + floorToInt((rightWidth + 1) / 2), paintRect.height() + floorToInt(topWidth / 2) + floorToInt((bottomWidth + 1) / 2)); EBorderStyle topStyle = collapsedBorderStyle(topVal.style()); EBorderStyle bottomStyle = collapsedBorderStyle(bottomVal.style()); EBorderStyle leftStyle = collapsedBorderStyle(leftVal.style()); EBorderStyle rightStyle = collapsedBorderStyle(rightVal.style()); bool renderTop = topStyle > BHIDDEN && !topVal.isTransparent() && floorToInt(topWidth); bool renderBottom = bottomStyle > BHIDDEN && !bottomVal.isTransparent() && floorToInt(bottomWidth); bool renderLeft = leftStyle > BHIDDEN && !leftVal.isTransparent() && floorToInt(leftWidth); bool renderRight = rightStyle > BHIDDEN && !rightVal.isTransparent() && floorToInt(rightWidth); // We never paint diagonals at the joins. We simply let the border with the highest // precedence paint on top of borders with lower precedence. CollapsedBorders borders; borders.addBorder(topVal, BSTop, renderTop, borderRect.x(), borderRect.y(), borderRect.maxX(), borderRect.y() + topWidth, topStyle); borders.addBorder(bottomVal, BSBottom, renderBottom, borderRect.x(), borderRect.maxY() - bottomWidth, borderRect.maxX(), borderRect.maxY(), bottomStyle); borders.addBorder(leftVal, BSLeft, renderLeft, borderRect.x(), borderRect.y(), borderRect.x() + leftWidth, borderRect.maxY(), leftStyle); borders.addBorder(rightVal, BSRight, renderRight, borderRect.maxX() - rightWidth, borderRect.y(), borderRect.maxX(), borderRect.maxY(), rightStyle); bool antialias = shouldAntialiasLines(graphicsContext); for (CollapsedBorder* border = borders.nextBorder(); border; border = borders.nextBorder()) { if (border->borderValue.isSameIgnoringColor(*table()->currentBorderValue())) drawLineForBoxSide(graphicsContext, LayoutRect(LayoutPoint(border->x1, border->y1), LayoutPoint(border->x2, border->y2)), border->side, border->borderValue.color(), border->style, 0, 0, antialias); } } void RenderTableCell::paintBackgroundsBehindCell(PaintInfo& paintInfo, const LayoutPoint& paintOffset, RenderElement* backgroundObject) { if (!paintInfo.shouldPaintWithinRoot(*this)) return; if (!backgroundObject) return; if (style().visibility() != VISIBLE) return; RenderTable* tableElt = table(); if (!tableElt->collapseBorders() && style().emptyCells() == HIDE && !firstChild()) return; LayoutPoint adjustedPaintOffset = paintOffset; if (backgroundObject != this) adjustedPaintOffset.moveBy(location()); Color c = backgroundObject->style().visitedDependentColor(CSSPropertyBackgroundColor); const FillLayer* bgLayer = backgroundObject->style().backgroundLayers(); if (bgLayer->hasImage() || c.isValid()) { // We have to clip here because the background would paint // on top of the borders otherwise. This only matters for cells and rows. bool shouldClip = backgroundObject->hasLayer() && (backgroundObject == this || backgroundObject == parent()) && tableElt->collapseBorders(); GraphicsContextStateSaver stateSaver(paintInfo.context(), shouldClip); if (shouldClip) { LayoutRect clipRect(adjustedPaintOffset.x() + borderLeft(), adjustedPaintOffset.y() + borderTop(), width() - borderLeft() - borderRight(), height() - borderTop() - borderBottom()); paintInfo.context().clip(clipRect); } paintFillLayers(paintInfo, c, bgLayer, LayoutRect(adjustedPaintOffset, frameRect().size()), BackgroundBleedNone, CompositeSourceOver, backgroundObject); } } void RenderTableCell::paintBoxDecorations(PaintInfo& paintInfo, const LayoutPoint& paintOffset) { if (!paintInfo.shouldPaintWithinRoot(*this)) return; RenderTable* table = this->table(); if (!table->collapseBorders() && style().emptyCells() == HIDE && !firstChild()) return; LayoutRect paintRect = LayoutRect(paintOffset, frameRect().size()); paintBoxShadow(paintInfo, paintRect, style(), Normal); // Paint our cell background. paintBackgroundsBehindCell(paintInfo, paintOffset, this); paintBoxShadow(paintInfo, paintRect, style(), Inset); if (!style().hasBorder() || table->collapseBorders()) return; paintBorder(paintInfo, paintRect, style()); } void RenderTableCell::paintMask(PaintInfo& paintInfo, const LayoutPoint& paintOffset) { if (style().visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask) return; RenderTable* tableElt = table(); if (!tableElt->collapseBorders() && style().emptyCells() == HIDE && !firstChild()) return; paintMaskImages(paintInfo, LayoutRect(paintOffset, frameRect().size())); } bool RenderTableCell::boxShadowShouldBeAppliedToBackground(const LayoutPoint&, BackgroundBleedAvoidance, InlineFlowBox*) const { return false; } void RenderTableCell::scrollbarsChanged(bool horizontalScrollbarChanged, bool verticalScrollbarChanged) { LayoutUnit scrollbarHeight = scrollbarLogicalHeight(); if (!scrollbarHeight) return; // Not sure if we should be doing something when a scrollbar goes away or not. // We only care if the scrollbar that affects our intrinsic padding has been added. if ((isHorizontalWritingMode() && !horizontalScrollbarChanged) || (!isHorizontalWritingMode() && !verticalScrollbarChanged)) return; // Shrink our intrinsic padding as much as possible to accommodate the scrollbar. if (style().verticalAlign() == MIDDLE) { LayoutUnit totalHeight = logicalHeight(); LayoutUnit heightWithoutIntrinsicPadding = totalHeight - intrinsicPaddingBefore() - intrinsicPaddingAfter(); totalHeight -= scrollbarHeight; LayoutUnit newBeforePadding = (totalHeight - heightWithoutIntrinsicPadding) / 2; LayoutUnit newAfterPadding = totalHeight - heightWithoutIntrinsicPadding - newBeforePadding; setIntrinsicPaddingBefore(newBeforePadding); setIntrinsicPaddingAfter(newAfterPadding); } else setIntrinsicPaddingAfter(intrinsicPaddingAfter() - scrollbarHeight); } RenderTableCell* RenderTableCell::createAnonymousWithParentRenderer(const RenderObject* parent) { auto cell = new RenderTableCell(parent->document(), RenderStyle::createAnonymousStyleWithDisplay(&parent->style(), TABLE_CELL)); cell->initializeStyle(); return cell; } } // namespace WebCore