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chromium / external / github.com / WebKit / webkit / e6b6011bb5906dfd1ecb432e7dc9ec1c1c1e41b2 / . / Source / WebCore / rendering / RenderTableCell.cpp
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/*
* Copyright (C) 1997 Martin Jones ([email protected])
* (C) 1997 Torben Weis ([email protected])
* (C) 1998 Waldo Bastian ([email protected])
* (C) 1999 Lars Knoll ([email protected])
* (C) 1999 Antti Koivisto ([email protected])
* Copyright (C) 2003-2026 Apple Inc. All rights reserved.
* Copyright (C) 2016-2017 Google Inc. All rights reserved.
* Copyright (C) 2025 Samuel Weinig <[email protected]>
*
* 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 "BackgroundPainter.h"
#include "BorderPainter.h"
#include "CollapsedBorderValue.h"
#include "ElementInlines.h"
#include "FloatQuad.h"
#include "GraphicsContext.h"
#include "HTMLNames.h"
#include "HTMLTableCellElement.h"
#include "LayoutScope.h"
#include "PaintInfo.h"
#include "RenderBoxInlines.h"
#include "RenderBoxModelObjectInlines.h"
#include "RenderObjectInlines.h"
#include "RenderTableCellInlines.h"
#include "RenderTableCol.h"
#include "RenderTableInlines.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "Settings.h"
#include "StyleBoxShadow.h"
#include "StyleProperties.h"
#include "TransformState.h"
#include <ranges>
#include <wtf/SetForScope.h>
#include <wtf/StackStats.h>
#include <wtf/TZoneMallocInlines.h>
#if ENABLE(MATHML)
#include "MathMLElement.h"
#include "MathMLNames.h"
#endif
namespace WebCore {
using namespace HTMLNames;
WTF_MAKE_TZONE_ALLOCATED_IMPL(RenderTableCell);
struct SameSizeAsRenderTableCell : public RenderBlockFlow {
unsigned bitfields;
LayoutUnit padding[2];
bool isComputingPreferredSize;
std::optional<LayoutUnit> orthogonalCellContentIntrinsicHeight;
};
static_assert(sizeof(RenderTableCell) == sizeof(SameSizeAsRenderTableCell), "RenderTableCell should stay small");
static_assert(sizeof(CollapsedBorderValue) <= 24, "CollapsedBorderValue should stay small");
RenderTableCell::RenderTableCell(Element& element, RenderStyle&& style)
: RenderBlockFlow(Type::TableCell, element, WTF::move(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();
ASSERT(isRenderTableCell());
}
RenderTableCell::RenderTableCell(Document& document, RenderStyle&& style)
: RenderBlockFlow(Type::TableCell, document, WTF::move(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)
{
ASSERT(isRenderTableCell());
}
RenderTableCell::~RenderTableCell() = default;
ASCIILiteral RenderTableCell::renderName() const
{
return (isAnonymous() || isPseudoElement()) ? "RenderTableCell (anonymous)"_s : "RenderTableCell"_s;
}
void RenderTableCell::willBeRemovedFromTree()
{
RenderBlockFlow::willBeRemovedFromTree();
if (!table() || !section())
return;
RenderTableSection* section = this->section();
table()->invalidateCollapsedBorders();
section->removeCachedCollapsedBorders(*this);
section->setNeedsCellRecalc();
}
unsigned RenderTableCell::parseColSpanFromDOM() const
{
ASSERT(element());
if (RefPtr cell = dynamicDowncast<HTMLTableCellElement>(*element()))
return std::min<unsigned>(cell->colSpan(), maxColumnIndex);
#if ENABLE(MATHML)
RefPtr mathMLElement = dynamicDowncast<MathMLElement>(*element());
if (mathMLElement && mathMLElement->hasTagName(MathMLNames::mtdTag))
return std::min<unsigned>(mathMLElement->colSpan(), maxColumnIndex);
#endif
return 1;
}
unsigned RenderTableCell::parseRowSpanFromDOM() const
{
ASSERT(element());
if (RefPtr cell = dynamicDowncast<HTMLTableCellElement>(*element()))
return std::min<unsigned>(cell->rowSpan(), maxRowIndex);
#if ENABLE(MATHML)
RefPtr mathMLElement = dynamicDowncast<MathMLElement>(*element());
if (mathMLElement && mathMLElement->hasTagName(MathMLNames::mtdTag))
return std::min<unsigned>(mathMLElement->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.
setNeedsLayoutAndPreferredWidthsUpdate();
if (parent() && section())
section()->setNeedsCellRecalc();
}
Style::PreferredSize RenderTableCell::logicalWidthFromColumns(RenderTableCol* firstColForThisCell, const Style::PreferredSize& widthFromStyle) const
{
ASSERT(firstColForThisCell && firstColForThisCell == table()->colElement(col()));
RenderTableCol* tableCol = firstColForThisCell;
unsigned colSpanCount = colSpan();
LayoutUnit colWidthSum;
for (unsigned i = 1; i <= colSpanCount; i++) {
auto& colWidth = tableCol->style().logicalWidth();
auto fixedColWidth = colWidth.tryFixed();
// Percentage value should be returned only for colSpan == 1.
// Otherwise we return original width for the cell.
if (!fixedColWidth) {
if (colSpanCount > 1)
return widthFromStyle;
return colWidth;
}
colWidthSum += fixedColWidth->resolveZoom(tableCol->style().usedZoomForLength());
tableCol = tableCol->nextColumn();
// If no next <col> tag found for the span we just return what we have for now.
if (!tableCol)
break;
}
// Column widths specified on <col> 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 Style::PreferredSize::Fixed { std::max<LayoutUnit>(0, colWidthSum - borderAndPaddingLogicalWidth()) };
return Style::PreferredSize::Fixed { colWidthSum };
}
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();
// We don't want the preferred width from children to be affected by any
// notional height on the cell, such as can happen when a percent sized image
// scales up its width to match the available height. Setting a zero override
// height prevents this from happening.
auto overridingLogicalHeight = this->overridingBorderBoxLogicalHeight();
if (overridingLogicalHeight)
setOverridingBorderBoxLogicalHeight({ });
RenderBlockFlow::computePreferredLogicalWidths();
if (overridingLogicalHeight)
setOverridingBorderBoxLogicalHeight(*overridingLogicalHeight);
if (!element() || !style().autoWrap() || !element()->hasAttributeWithoutSynchronization(nowrapAttr))
return;
auto [ logicalWidth, usedZoom ] = styleOrColLogicalWidth();
if (auto fixedLogicalWidth = logicalWidth.tryFixed()) {
// 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(LayoutUnit(fixedLogicalWidth->resolveZoom(usedZoom)), m_minPreferredLogicalWidth);
}
}
LayoutRect RenderTableCell::frameRectForStickyPositioning() const
{
// RenderTableCell has the RenderTableRow as the container, but is positioned relatively
// to the RenderTableSection. The sticky positioning algorithm assumes that elements are
// positioned relatively to their container, so we correct for that here.
ASSERT(parentBox());
auto returnValue = frameRect();
returnValue.move(-parentBox()->locationOffset());
return returnValue;
}
bool RenderTableCell::computeIntrinsicPadding(LayoutUnit heightConstraint)
{
auto oldIntrinsicPaddingBefore = LayoutUnit { };
auto oldIntrinsicPaddingAfter = LayoutUnit { };
// logicalHeight() here means orginal border box height (i.e. no column stretching for orthogonal box).
auto borderBoxLogicalHeight = LayoutUnit { };
if (!isOrthogonal()) {
oldIntrinsicPaddingBefore = intrinsicPaddingBefore();
oldIntrinsicPaddingAfter = intrinsicPaddingAfter();
borderBoxLogicalHeight = logicalHeight();
} else {
ASSERT(m_orthogonalCellContentIntrinsicHeight);
borderBoxLogicalHeight = m_orthogonalCellContentIntrinsicHeight.value_or(0_lu) + RenderBlockFlow::paddingBefore() + RenderBlockFlow::paddingAfter() + borderBefore() + borderAfter();
oldIntrinsicPaddingBefore = { };
oldIntrinsicPaddingAfter = { };
}
auto borderBoxLogicalHeightWithoutIntrinsicPadding = borderBoxLogicalHeight - (oldIntrinsicPaddingBefore + oldIntrinsicPaddingAfter);
auto intrinsicPaddingBefore = oldIntrinsicPaddingBefore;
auto alignment = style().verticalAlign();
if (auto alignContent = style().alignContent(); !alignContent.isNormal()) {
auto resolveAlignedContent = alignContent.resolve();
// align-content overrides vertical-align
if (resolveAlignedContent.position() == ContentPosition::Baseline)
alignment = CSS::Keyword::Baseline { };
else if (resolveAlignedContent.isCentered())
alignment = CSS::Keyword::Middle { };
else if (resolveAlignedContent.isStartward())
alignment = CSS::Keyword::Top { };
else if (resolveAlignedContent.isEndward())
alignment = CSS::Keyword::Bottom { };
}
auto applyStandard = [&] {
auto baseline = cellBaselinePosition();
if (!firstInFlowChild() && baseline == borderAndPaddingBefore()) {
// If baseline equals borderAndPaddingBefore(), there is no real content.
intrinsicPaddingBefore = 0;
return;
}
auto needsIntrinsicPadding = baseline > borderAndPaddingBefore() || !borderBoxLogicalHeight;
if (needsIntrinsicPadding)
intrinsicPaddingBefore = section()->rowBaseline(rowIndex()) - (baseline - oldIntrinsicPaddingBefore);
};
WTF::switchOn(alignment,
[&](const CSS::Keyword::Sub&) {
applyStandard();
},
[&](const CSS::Keyword::Super&) {
applyStandard();
},
[&](const CSS::Keyword::TextTop&) {
applyStandard();
},
[&](const CSS::Keyword::TextBottom&) {
applyStandard();
},
[&](const CSS::Keyword::Baseline&) {
applyStandard();
},
[&](const CSS::Keyword::Top&) {
// Do nothing.
},
[&](const CSS::Keyword::Middle&) {
intrinsicPaddingBefore = (heightConstraint - borderBoxLogicalHeightWithoutIntrinsicPadding) / 2;
},
[&](const CSS::Keyword::Bottom&) {
intrinsicPaddingBefore = heightConstraint - borderBoxLogicalHeightWithoutIntrinsicPadding;
},
[&](const CSS::Keyword::WebkitBaselineMiddle&) {
// Do nothing.
},
[&](const Style::VerticalAlign::Length&) {
applyStandard();
}
);
LayoutUnit intrinsicPaddingAfter = heightConstraint - borderBoxLogicalHeightWithoutIntrinsicPadding - intrinsicPaddingBefore;
setIntrinsicPaddingBefore(intrinsicPaddingBefore);
setIntrinsicPaddingAfter(intrinsicPaddingAfter);
return intrinsicPaddingBefore != oldIntrinsicPaddingBefore || intrinsicPaddingAfter != oldIntrinsicPaddingAfter;
}
RenderBox::LogicalExtentComputedValues RenderTableCell::computeLogicalHeight(LayoutUnit logicalHeight, LayoutUnit logicalTop) const
{
if (isOrthogonal()) {
// Note that at this point, contentBoxLogicalHeight means content height.
m_orthogonalCellContentIntrinsicHeight = contentBoxLogicalHeight();
}
return RenderBlockFlow::computeLogicalHeight(logicalHeight, logicalTop);
}
void RenderTableCell::updateLogicalWidth()
{
if (isComputingPreferredSize()) {
// While table layout sets the final logical width for cells, in case of
// preferred width computation for orthogonal content, we have
// to follow normal layout flow to be able to compute logical height.
RenderBlockFlow::updateLogicalWidth();
return;
}
if (auto logicalWidth = overridingBorderBoxLogicalWidth())
setLogicalWidth(*logicalWidth);
}
LayoutUnit RenderTableCell::logicalHeightForRowSizing() const
{
auto logicalSizeForRowSizing = [&] {
if (!isOrthogonal())
return logicalHeight() - (intrinsicPaddingBefore() + intrinsicPaddingAfter());
LogicalExtentComputedValues values;
computeLogicalWidth(values);
return values.extent;
};
// FIXME: This function does too much work, and is very hot during table layout!
auto usedLogicalSize = logicalSizeForRowSizing();
auto specifiedSize = !isOrthogonal() ? style().logicalHeight() : style().logicalWidth();
if (!specifiedSize.isSpecified())
return usedLogicalSize;
auto computedLogicaSize = Style::evaluate<LayoutUnit>(specifiedSize, 0_lu, style().usedZoomForLength());
// In strict mode, box-sizing: content-box do the right thing and actually add in the border and padding.
// Call computedCSSPadding* directly to avoid including implicitPadding.
if (!document().inQuirksMode() && style().boxSizing() != BoxSizing::BorderBox)
computedLogicaSize += computedCSSPaddingBefore() + computedCSSPaddingAfter() + borderBefore() + borderAfter();
return std::max(computedLogicaSize, usedLogicalSize);
}
void RenderTableCell::setCellLogicalWidth(LayoutUnit logicalWidthInTableDirection)
{
auto logicalSizeInTableDirection = !isOrthogonal() ? logicalWidth() : logicalHeight();
if (logicalWidthInTableDirection == logicalSizeInTableDirection)
return;
setNeedsLayout(MarkOnlyThis);
setCellWidthChanged(true);
if (!isOrthogonal()) {
setLogicalWidth(logicalWidthInTableDirection);
return;
}
setLogicalHeight(logicalWidthInTableDirection);
// As table layout drives the size of table cells, we have to prevent regular layout flow from
// overriding this height value. This is similar to how RenderTableCell handles logical widths by overriding ::updateLogicalWidth.
setOverridingBorderBoxLogicalHeight(logicalWidthInTableDirection);
}
void RenderTableCell::layout()
{
StackStats::LayoutCheckPoint layoutCheckPoint;
int oldCellBaseline = cellBaselinePosition();
auto scope = LayoutScope { *this };
layoutBlock(cellWidthChanged() ? RelayoutChildren::Yes : RelayoutChildren::No);
// 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<LayoutUnit>(0, intrinsicPaddingBefore() - std::max<LayoutUnit>(0, cellBaselinePosition() - oldCellBaseline));
setIntrinsicPaddingBefore(newIntrinsicPaddingBefore);
setNeedsLayout(MarkOnlyThis);
layoutBlock(cellWidthChanged() ? RelayoutChildren::Yes : RelayoutChildren::No);
}
invalidateHasEmptyCollapsedBorders();
// FIXME: This value isn't the intrinsic content logical height, but we need
// to update the value as its used by flexbox layout. crbug.com/367324
cacheIntrinsicContentLogicalHeightForFlexItem(contentBoxLogicalHeight());
setCellWidthChanged(false);
}
RectEdges<LayoutUnit> RenderTableCell::padding() const
{
auto top = computedCSSPaddingTop();
auto right = computedCSSPaddingRight();
auto bottom = computedCSSPaddingBottom();
auto left = computedCSSPaddingLeft();
if (isHorizontalWritingMode()) {
bool isTopToBottom = writingMode().isBlockTopToBottom();
top += isTopToBottom ? intrinsicPaddingBefore() : intrinsicPaddingAfter();
bottom += isTopToBottom ? intrinsicPaddingAfter() : intrinsicPaddingBefore();
} else {
bool isLeftToRight = writingMode().isBlockLeftToRight();
left += isLeftToRight ? intrinsicPaddingBefore() : intrinsicPaddingAfter();
right += isLeftToRight ? intrinsicPaddingAfter() : intrinsicPaddingBefore();
}
return {
top,
right,
bottom,
left
};
}
LayoutUnit RenderTableCell::paddingTop() const
{
LayoutUnit result = computedCSSPaddingTop();
if (!isHorizontalWritingMode())
return result;
return result + (writingMode().isBlockTopToBottom() ? intrinsicPaddingBefore() : intrinsicPaddingAfter());
}
LayoutUnit RenderTableCell::paddingBottom() const
{
LayoutUnit result = computedCSSPaddingBottom();
if (!isHorizontalWritingMode())
return result;
return result + (writingMode().isBlockTopToBottom()? intrinsicPaddingAfter() : intrinsicPaddingBefore());
}
LayoutUnit RenderTableCell::paddingLeft() const
{
LayoutUnit result = computedCSSPaddingLeft();
if (isHorizontalWritingMode())
return result;
return result + (writingMode().isBlockLeftToRight() ? intrinsicPaddingBefore() : intrinsicPaddingAfter());
}
LayoutUnit RenderTableCell::paddingRight() const
{
LayoutUnit result = computedCSSPaddingRight();
if (isHorizontalWritingMode())
return result;
return result + (writingMode().isBlockLeftToRight() ? intrinsicPaddingAfter() : intrinsicPaddingBefore());
}
LayoutUnit RenderTableCell::paddingBefore() const
{
return computedCSSPaddingBefore() + intrinsicPaddingBefore();
}
LayoutUnit RenderTableCell::paddingAfter() const
{
return computedCSSPaddingAfter() + intrinsicPaddingAfter();
}
void RenderTableCell::setOverridingLogicalHeightFromRowHeight(LayoutUnit rowHeight)
{
clearIntrinsicPadding();
setOverridingBorderBoxLogicalHeight(rowHeight);
}
LayoutUnit RenderTableCell::minLogicalWidthForColumnSizing()
{
if (!isOrthogonal())
return RenderBlockFlow::minPreferredLogicalWidth();
auto computingPreferredSize = SetForScope<bool> { m_isComputingPreferredSize, true };
setNeedsLayout(MarkOnlyThis);
layoutIfNeeded();
ASSERT(m_orthogonalCellContentIntrinsicHeight.has_value());
return std::max(logicalHeight(), m_orthogonalCellContentIntrinsicHeight.value_or(0_lu));
}
LayoutUnit RenderTableCell::maxLogicalWidthForColumnSizing()
{
if (!isOrthogonal())
return RenderBlockFlow::maxPreferredLogicalWidth();
auto computingPreferredSize = SetForScope<bool> { m_isComputingPreferredSize, true };
setNeedsLayout(MarkOnlyThis);
layoutIfNeeded();
ASSERT(m_orthogonalCellContentIntrinsicHeight.has_value());
return std::max(logicalHeight(), m_orthogonalCellContentIntrinsicHeight.value_or(0_lu));
}
LayoutSize RenderTableCell::offsetFromContainer(const RenderElement& container, const LayoutPoint& point, bool* offsetDependsOnPoint) const
{
ASSERT(&container == this->container());
LayoutSize offset = RenderBlockFlow::offsetFromContainer(container, point, offsetDependsOnPoint);
if (auto* containerOfRow = container.container(); containerOfRow && parent())
offset -= parentBox()->offsetFromContainer(*containerOfRow, point);
return offset;
}
auto RenderTableCell::localRectsForRepaint(RepaintOutlineBounds repaintOutlineBounds) const -> RepaintRects
{
// 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::localRectsForRepaint(repaintOutlineBounds);
bool flippedInline = tableWritingMode().isInlineFlipped();
LayoutUnit outlineSize { style().usedOutlineSize() };
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 && !flippedInline) || (right && flippedInline)) {
if (RenderTableCell* before = table()->cellBefore(this)) {
top = std::max(top, before->borderHalfTop(true));
bottom = std::max(bottom, before->borderHalfBottom(true));
}
}
if ((left && flippedInline) || (right && !flippedInline)) {
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<LayoutUnit>(left, -visualOverflowRect().x()), std::max<LayoutUnit>(top, -visualOverflowRect().y()));
auto overflowRect = LayoutRect(-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
overflowRect.move(view().frameView().layoutContext().layoutDelta());
auto rects = RepaintRects { overflowRect };
if (repaintOutlineBounds == RepaintOutlineBounds::Yes)
rects.outlineBoundsRect = localOutlineBoundsRepaintRect();
return rects;
}
LayoutUnit RenderTableCell::containingBlockLogicalWidthForContent() const
{
// For percentage padding/width resolution in table cells, we need to resolve
// against the sum of column widths plus interleaved border spacing (but not
// the leading/trailing border spacing).
CheckedPtr renderTable = table();
if (!renderTable)
return RenderBlockFlow::containingBlockLogicalWidthForContent();
// The table's columnPositions() array contains the cumulative positions of columns.
// The last element gives us the total width including all columns and interleaved spacing.
// We need to subtract the leading border spacing to get the correct basis.
auto& columnPositions = renderTable->columnPositions();
if (columnPositions.isEmpty())
return RenderBlockFlow::containingBlockLogicalWidthForContent();
LayoutUnit totalWidth = columnPositions.last();
// Subtract the leading border spacing
if (totalWidth > 0)
totalWidth -= renderTable->hBorderSpacing();
return totalWidth;
}
auto RenderTableCell::computeVisibleRectsInContainer(const RepaintRects& rects, const RenderLayerModelObject* container, VisibleRectContext context) const -> std::optional<RepaintRects>
{
if (container == this)
return rects;
auto adjustedRects = rects;
if ((!view().frameView().layoutContext().isPaintOffsetCacheEnabled() || container || context.options.contains(VisibleRectContext::Option::UseEdgeInclusiveIntersection)) && parent())
adjustedRects.moveBy(-parentBox()->location()); // Rows are in the same coordinate space, so don't add their offset in.
return RenderBlockFlow::computeVisibleRectsInContainer(adjustedRects, container, context);
}
LayoutUnit RenderTableCell::cellBaselinePosition() const
{
// <http://www.w3.org/TR/2007/CR-CSS21-20070719/tables.html#height-layout>: 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.
if (!isOrthogonal())
return firstLineBaseline().value_or(borderAndPaddingBefore() + contentBoxLogicalHeight());
return { };
}
static inline void markCellDirtyWhenCollapsedBorderChanges(RenderTableCell* cell)
{
if (!cell)
return;
cell->setNeedsLayoutAndPreferredWidthsUpdate();
}
void RenderTableCell::styleDidChange(Style::Difference diff, const RenderStyle* oldStyle)
{
ASSERT(style().display() == DisplayType::TableCell);
ASSERT(!row() || row()->rowIndexWasSet());
RenderBlockFlow::styleDidChange(diff, oldStyle);
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() || style().alignContent() != oldStyle->alignContent()))
clearIntrinsicPadding();
if (CheckedPtr table = this->table(); table && oldStyle) {
table->invalidateCollapsedBordersAfterStyleChangeIfNeeded(*oldStyle, style(), this);
if (table->collapseBorders() && diff == Style::DifferenceResult::Layout) {
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 bool compareBorders(const CollapsedBorderValue& border1, const CollapsedBorderValue& border2)
{
// Sanity check the values passed in. The null border have lowest priority.
if (!border2.exists())
return false;
if (!border1.exists())
return true;
// Rule #1 above.
if (border1.style() == BorderStyle::Hidden)
return false;
if (border2.style() == BorderStyle::Hidden)
return true;
// Rule #2 above. A style of 'none' has lowest priority and always loses to any other border.
if (border2.style() == BorderStyle::None)
return false;
if (border1.style() == BorderStyle::None)
return true;
// The first part of rule #3 above. Wider borders win.
if (border1.width() != border2.width())
return border1.width() < border2.width();
// The borders have equal width. Sort by border style.
if (border1.style() != border2.style())
return border1.style() < border2.style();
// The border have the same width and style. Rely on precedence (cell over row over row group, etc.)
return border1.precedence() < border2.precedence();
}
static CollapsedBorderValue chooseBorder(const CollapsedBorderValue& border1, const CollapsedBorderValue& border2)
{
const CollapsedBorderValue& border = compareBorders(border1, border2) ? border2 : border1;
return border.style() == BorderStyle::Hidden ? CollapsedBorderValue() : border;
}
bool RenderTableCell::hasStartBorderAdjoiningTable() const
{
return !col();
}
bool RenderTableCell::hasEndBorderAdjoiningTable() const
{
return table()->colToEffCol(col() + colSpan() - 1) == table()->numEffCols() - 1;
}
CollapsedBorderValue RenderTableCell::emptyBorder() const
{
return CollapsedBorderValue(BorderValue(), Color(), BorderPrecedence::Cell, style().usedZoomForLength());
}
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;
}
static Color resolvedBorderColor(const RenderStyle& style, CSSPropertyID borderColor)
{
switch (borderColor) {
case CSSPropertyBorderTopColor:
return style.visitedDependentBorderTopColorApplyingColorFilter();
case CSSPropertyBorderRightColor:
return style.visitedDependentBorderRightColorApplyingColorFilter();
case CSSPropertyBorderBottomColor:
return style.visitedDependentBorderBottomColorApplyingColorFilter();
case CSSPropertyBorderLeftColor:
return style.visitedDependentBorderLeftColorApplyingColorFilter();
default:
ASSERT_NOT_REACHED();
return Color::black;
}
}
CollapsedBorderValue RenderTableCell::computeCollapsedStartBorder(IncludeBorderColorOrNot includeColor) const
{
// For the start border, we need to check, in order of precedence:
// (1) Our start border.
CSSPropertyID startColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderInlineStartColor, tableWritingMode()) : CSSPropertyInvalid;
CSSPropertyID endColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderInlineEndColor, tableWritingMode()) : CSSPropertyInvalid;
CollapsedBorderValue result(style().borderStart(tableWritingMode()), includeColor ? resolvedBorderColor(style(), startColorProperty) : Color(), BorderPrecedence::Cell, style().usedZoomForLength());
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 ? resolvedBorderColor(cellBefore->style(), endColorProperty) : Color(), BorderPrecedence::Cell, cellBefore->style().usedZoomForLength());
// |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 ? resolvedBorderColor(parent()->style(), startColorProperty) : Color(), BorderPrecedence::Row, row()->style().usedZoomForLength()));
if (!result.exists())
return result;
// (4) Our row group's start border.
result = chooseBorder(result, CollapsedBorderValue(section()->borderAdjoiningStartCell(*this), includeColor ? resolvedBorderColor(section()->style(), startColorProperty) : Color(), BorderPrecedence::RowGroup, section()->style().usedZoomForLength()));
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(), includeColor ? resolvedBorderColor(colElt->style(), startColorProperty) : Color(), BorderPrecedence::ColumnGroup, colElt->style().usedZoomForLength()));
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(), includeColor ? resolvedBorderColor(colElt->style(), startColorProperty) : Color(), BorderPrecedence::Column, colElt->style().usedZoomForLength()));
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(), includeColor ? resolvedBorderColor(enclosingColumnGroup->style(), startColorProperty) : Color(), BorderPrecedence::ColumnGroup, enclosingColumnGroup->style().usedZoomForLength()));
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 ? resolvedBorderColor(colElt->style(), endColorProperty) : Color(), BorderPrecedence::ColumnGroup, colElt->style().usedZoomForLength()), 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 ? resolvedBorderColor(colElt->style(), endColorProperty) : Color(), BorderPrecedence::Column, colElt->style().usedZoomForLength()), 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(), includeColor ? resolvedBorderColor(enclosingColumnGroup->style(), endColorProperty) : Color(), BorderPrecedence::ColumnGroup, enclosingColumnGroup->style().usedZoomForLength()), result);
if (!result.exists())
return result;
}
}
}
}
if (startBorderAdjoinsTable) {
// (7) The table's start border.
result = chooseBorder(result, CollapsedBorderValue(table->style().borderStart(), includeColor ? resolvedBorderColor(table->style(), startColorProperty) : Color(), BorderPrecedence::Table, table->style().usedZoomForLength()));
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.
CSSPropertyID startColorProperty = includeColor
? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderInlineStartColor, tableWritingMode()) : CSSPropertyInvalid;
CSSPropertyID endColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderInlineEndColor, tableWritingMode()) : CSSPropertyInvalid;
CollapsedBorderValue result = CollapsedBorderValue(style().borderEnd(tableWritingMode()), includeColor ? resolvedBorderColor(style(), endColorProperty) : Color(), BorderPrecedence::Cell, style().usedZoomForLength());
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 ? resolvedBorderColor(cellAfter->style(), startColorProperty) : Color(), BorderPrecedence::Cell, cellAfter->style().usedZoomForLength());
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 ? resolvedBorderColor(parent()->style(), endColorProperty) : Color(), BorderPrecedence::Row, row()->style().usedZoomForLength()));
if (!result.exists())
return result;
// (4) Our row group's end border.
result = chooseBorder(result, CollapsedBorderValue(section()->borderAdjoiningEndCell(*this), includeColor ? resolvedBorderColor(section()->style(), endColorProperty) : Color(), BorderPrecedence::RowGroup, section()->style().usedZoomForLength()));
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(), includeColor ? resolvedBorderColor(colElt->style(), endColorProperty) : Color(), BorderPrecedence::ColumnGroup, colElt->style().usedZoomForLength()));
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(), includeColor ? resolvedBorderColor(colElt->style(), endColorProperty) : Color(), BorderPrecedence::Column, colElt->style().usedZoomForLength()));
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(), includeColor ? resolvedBorderColor(enclosingColumnGroup->style(), endColorProperty) : Color(), BorderPrecedence::ColumnGroup, enclosingColumnGroup->style().usedZoomForLength()));
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 ? resolvedBorderColor(colElt->style(), startColorProperty) : Color(), BorderPrecedence::ColumnGroup, colElt->style().usedZoomForLength()));
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 ? resolvedBorderColor(colElt->style(), startColorProperty) : Color(), BorderPrecedence::Column, colElt->style().usedZoomForLength()));
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(), includeColor ? resolvedBorderColor(enclosingColumnGroup->style(), startColorProperty) : Color(), BorderPrecedence::ColumnGroup, enclosingColumnGroup->style().usedZoomForLength()));
if (!result.exists())
return result;
}
}
}
}
if (endBorderAdjoinsTable) {
// (7) The table's end border.
result = chooseBorder(result, CollapsedBorderValue(table->style().borderEnd(), includeColor ? resolvedBorderColor(table->style(), endColorProperty) : Color(), BorderPrecedence::Table, table->style().usedZoomForLength()));
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.
CSSPropertyID beforeColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderBlockStartColor, tableWritingMode()) : CSSPropertyInvalid;
CSSPropertyID afterColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderBlockEndColor, tableWritingMode()) : CSSPropertyInvalid;
CollapsedBorderValue result = CollapsedBorderValue(style().borderBefore(tableWritingMode()), includeColor ? resolvedBorderColor(style(), beforeColorProperty) : Color(), BorderPrecedence::Cell, style().usedZoomForLength());
RenderTable* table = this->table();
if (!table)
return result;
RenderTableCell* previousCell = table->cellAbove(this);
if (previousCell) {
// (2) A before cell's after border.
result = chooseBorder(CollapsedBorderValue(previousCell->style().borderAfter(), includeColor ? resolvedBorderColor(previousCell->style(), afterColorProperty) : Color(), BorderPrecedence::Cell, previousCell->style().usedZoomForLength()), result);
if (!result.exists())
return result;
}
// (3) Our row's before border.
result = chooseBorder(result, CollapsedBorderValue(parent()->style().borderBefore(tableWritingMode()), includeColor ? resolvedBorderColor(parent()->style(), beforeColorProperty) : Color(), BorderPrecedence::Row, parent()->style().usedZoomForLength()));
if (!result.exists())
return result;
// (4) The previous row's after border.
if (previousCell) {
RenderTableRow* previousRow = nullptr;
if (previousCell->section() == section())
previousRow = dynamicDowncast<RenderTableRow>(parent()->previousSibling());
else
previousRow = previousCell->section()->lastRow();
if (previousRow) {
result = chooseBorder(CollapsedBorderValue(previousRow->style().borderAfter(), includeColor ? resolvedBorderColor(previousRow->style(), afterColorProperty) : Color(), BorderPrecedence::Row, previousRow->style().usedZoomForLength()), 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(tableWritingMode()), includeColor ? resolvedBorderColor(currSection->style(), beforeColorProperty) : Color(), BorderPrecedence::RowGroup, currSection->style().usedZoomForLength()));
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 ? resolvedBorderColor(currSection->style(), afterColorProperty) : Color(), BorderPrecedence::RowGroup, currSection->style().usedZoomForLength()), 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(tableWritingMode()), includeColor ? resolvedBorderColor(colElt->style(), beforeColorProperty) : Color(), BorderPrecedence::Column, colElt->style().usedZoomForLength()));
if (!result.exists())
return result;
if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroup()) {
result = chooseBorder(result, CollapsedBorderValue(enclosingColumnGroup->style().borderBefore(tableWritingMode()), includeColor ? resolvedBorderColor(enclosingColumnGroup->style(), beforeColorProperty) : Color(), BorderPrecedence::ColumnGroup, enclosingColumnGroup->style().usedZoomForLength()));
if (!result.exists())
return result;
}
}
// (9) The table's before border.
result = chooseBorder(result, CollapsedBorderValue(table->style().borderBefore(), includeColor ? resolvedBorderColor(table->style(), beforeColorProperty) : Color(), BorderPrecedence::Table, table->style().usedZoomForLength()));
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.
CSSPropertyID beforeColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderBlockStartColor, tableWritingMode()) : CSSPropertyInvalid;
CSSPropertyID afterColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderBlockEndColor, tableWritingMode()) : CSSPropertyInvalid;
CollapsedBorderValue result = CollapsedBorderValue(style().borderAfter(tableWritingMode()), includeColor ? resolvedBorderColor(style(), afterColorProperty) : Color(), BorderPrecedence::Cell, style().usedZoomForLength());
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(tableWritingMode()), includeColor ? resolvedBorderColor(nextCell->style(), beforeColorProperty) : Color(), BorderPrecedence::Cell, nextCell->style().usedZoomForLength()));
if (!result.exists())
return result;
}
// (3) Our row's after border. Account for rowspan by using the last row in the span.
// For a cell spanning multiple rows, the after border should match with the border
// of the last row in the span, not the first row.
size_t lastRowIndex = rowIndex() + rowSpan() - 1;
if (CheckedPtr lastRowInSpan = section()->rowRendererAt(lastRowIndex)) {
result = chooseBorder(result, CollapsedBorderValue(lastRowInSpan->style().borderAfter(), includeColor ? resolvedBorderColor(lastRowInSpan->style(), afterColorProperty) : Color(), BorderPrecedence::Row, lastRowInSpan->style().usedZoomForLength()));
if (!result.exists())
return result;
}
// (4) The next row's before border.
if (nextCell) {
result = chooseBorder(result, CollapsedBorderValue(nextCell->parent()->style().borderBefore(tableWritingMode()), includeColor ? resolvedBorderColor(nextCell->parent()->style(), beforeColorProperty) : Color(), BorderPrecedence::Row, nextCell->parent()->style().usedZoomForLength()));
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(tableWritingMode()), includeColor ? resolvedBorderColor(currSection->style(), afterColorProperty) : Color(), BorderPrecedence::RowGroup, currSection->style().usedZoomForLength()));
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(tableWritingMode()), includeColor ? resolvedBorderColor(currSection->style(), beforeColorProperty) : Color(), BorderPrecedence::RowGroup, currSection->style().usedZoomForLength()));
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(tableWritingMode()), includeColor ? resolvedBorderColor(colElt->style(), afterColorProperty) : Color(), BorderPrecedence::Column, colElt->style().usedZoomForLength()));
if (!result.exists()) return result;
if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroup()) {
result = chooseBorder(result, CollapsedBorderValue(enclosingColumnGroup->style().borderAfter(tableWritingMode()), includeColor ? resolvedBorderColor(enclosingColumnGroup->style(), afterColorProperty) : Color(), BorderPrecedence::ColumnGroup, enclosingColumnGroup->style().usedZoomForLength()));
if (!result.exists())
return result;
}
}
// (9) The table's after border.
result = chooseBorder(result, CollapsedBorderValue(table->style().borderAfter(tableWritingMode()), includeColor ? resolvedBorderColor(table->style(), afterColorProperty) : Color(), BorderPrecedence::Table, table->style().usedZoomForLength()));
if (!result.exists())
return result;
}
return result;
}
inline CollapsedBorderValue RenderTableCell::cachedCollapsedLeftBorder(const WritingMode writingMode) const
{
if (writingMode.isHorizontal())
return writingMode.isInlineLeftToRight() ? section()->cachedCollapsedBorder(*this, CBSStart) : section()->cachedCollapsedBorder(*this, CBSEnd);
return writingMode.isBlockLeftToRight() ? section()->cachedCollapsedBorder(*this, CBSBefore) : section()->cachedCollapsedBorder(*this, CBSAfter);
}
inline CollapsedBorderValue RenderTableCell::cachedCollapsedRightBorder(const WritingMode writingMode) const
{
if (writingMode.isHorizontal())
return writingMode.isInlineLeftToRight() ? section()->cachedCollapsedBorder(*this, CBSEnd) : section()->cachedCollapsedBorder(*this, CBSStart);
return writingMode.isBlockLeftToRight() ? section()->cachedCollapsedBorder(*this, CBSAfter) : section()->cachedCollapsedBorder(*this, CBSBefore);
}
inline CollapsedBorderValue RenderTableCell::cachedCollapsedTopBorder(const WritingMode writingMode) const
{
if (writingMode.isHorizontal())
return writingMode.isBlockTopToBottom() ? section()->cachedCollapsedBorder(*this, CBSBefore) : section()->cachedCollapsedBorder(*this, CBSAfter);
return writingMode.isInlineTopToBottom() ? section()->cachedCollapsedBorder(*this, CBSStart) : section()->cachedCollapsedBorder(*this, CBSEnd);
}
inline CollapsedBorderValue RenderTableCell::cachedCollapsedBottomBorder(const WritingMode writingMode) const
{
if (writingMode.isHorizontal())
return writingMode.isBlockTopToBottom() ? section()->cachedCollapsedBorder(*this, CBSAfter) : section()->cachedCollapsedBorder(*this, CBSBefore);
return writingMode.isInlineTopToBottom() ? section()->cachedCollapsedBorder(*this, CBSEnd) : section()->cachedCollapsedBorder(*this, CBSStart);
}
RectEdges<LayoutUnit> RenderTableCell::borderWidths() const
{
RenderTable* table = this->table();
if (!table)
return RenderBlockFlow::borderWidths();
if (!table->collapseBorders())
return RenderBlockFlow::borderWidths();
return {
borderHalfTop(false),
borderHalfRight(false),
borderHalfBottom(false),
borderHalfLeft(false)
};
}
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
{
WritingMode writingMode = this->tableWritingMode();
if (writingMode.isHorizontal())
return writingMode.isInlineLeftToRight() ? borderHalfStart(outer) : borderHalfEnd(outer);
return writingMode.isBlockLeftToRight() ? borderHalfBefore(outer) : borderHalfAfter(outer);
}
LayoutUnit RenderTableCell::borderHalfRight(bool outer) const
{
WritingMode writingMode = this->tableWritingMode();
if (writingMode.isHorizontal())
return writingMode.isInlineLeftToRight() ? borderHalfEnd(outer) : borderHalfStart(outer);
return writingMode.isBlockLeftToRight() ? borderHalfAfter(outer) : borderHalfBefore(outer);
}
LayoutUnit RenderTableCell::borderHalfTop(bool outer) const
{
WritingMode writingMode = this->tableWritingMode();
if (writingMode.isHorizontal())
return writingMode.isBlockTopToBottom() ? borderHalfBefore(outer) : borderHalfAfter(outer);
return writingMode.isInlineTopToBottom() ? borderHalfStart(outer) : borderHalfEnd(outer);
}
LayoutUnit RenderTableCell::borderHalfBottom(bool outer) const
{
WritingMode writingMode = this->tableWritingMode();
if (writingMode.isHorizontal())
return writingMode.isBlockTopToBottom() ? borderHalfAfter(outer) : borderHalfBefore(outer);
return writingMode.isInlineTopToBottom() ? borderHalfEnd(outer) : borderHalfStart(outer);
}
LayoutUnit RenderTableCell::borderHalfStart(bool outer) const
{
CollapsedBorderValue border = collapsedStartBorder(DoNotIncludeBorderColor);
if (border.exists())
return CollapsedBorderValue::adjustedCollapsedBorderWidth(border.width(), document().deviceScaleFactor(), !(tableWritingMode().isInlineFlipped() ^ outer));
return 0;
}
LayoutUnit RenderTableCell::borderHalfEnd(bool outer) const
{
CollapsedBorderValue border = collapsedEndBorder(DoNotIncludeBorderColor);
if (border.exists())
return CollapsedBorderValue::adjustedCollapsedBorderWidth(border.width(), document().deviceScaleFactor(), tableWritingMode().isInlineFlipped() ^ outer);
return 0;
}
LayoutUnit RenderTableCell::borderHalfBefore(bool outer) const
{
CollapsedBorderValue border = collapsedBeforeBorder(DoNotIncludeBorderColor);
if (border.exists())
return CollapsedBorderValue::adjustedCollapsedBorderWidth(border.width(), document().deviceScaleFactor(), !(tableWritingMode().isBlockFlipped() ^ outer));
return 0;
}
LayoutUnit RenderTableCell::borderHalfAfter(bool outer) const
{
CollapsedBorderValue border = collapsedAfterBorder(DoNotIncludeBorderColor);
if (border.exists())
return CollapsedBorderValue::adjustedCollapsedBorderWidth(border.width(), document().deviceScaleFactor(), tableWritingMode().isBlockFlipped() ^ outer);
return 0;
}
void RenderTableCell::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
ASSERT(paintInfo.phase != PaintPhase::CollapsedTableBorders);
RenderBlockFlow::paint(paintInfo, paintOffset);
}
struct CollapsedBorder {
CollapsedBorderValue borderValue;
BoxSide side;
bool shouldPaint;
LayoutUnit x1;
LayoutUnit y1;
LayoutUnit x2;
LayoutUnit y2;
BorderStyle 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, BorderStyle 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;
}
std::array<CollapsedBorder, 4> m_borders;
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());
}
void RenderTableCell::sortBorderValues(RenderTable::CollapsedBorderValues& borderValues)
{
std::ranges::sort(borderValues, compareBorders);
}
void RenderTableCell::paintCollapsedBorders(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
ASSERT(paintInfo.phase == PaintPhase::CollapsedTableBorders);
if (!paintInfo.shouldPaintWithinRoot(*this) || style().usedVisibility() != 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;
WritingMode writingMode = tableWritingMode();
CollapsedBorderValue leftVal = cachedCollapsedLeftBorder(writingMode);
CollapsedBorderValue rightVal = cachedCollapsedRightBorder(writingMode);
CollapsedBorderValue topVal = cachedCollapsedTopBorder(writingMode);
CollapsedBorderValue bottomVal = cachedCollapsedBottomBorder(writingMode);
// 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();
float deviceScaleFactor = document().deviceScaleFactor();
LayoutUnit leftHalfCollapsedBorder = CollapsedBorderValue::adjustedCollapsedBorderWidth(leftWidth , deviceScaleFactor, false);
LayoutUnit topHalfCollapsedBorder = CollapsedBorderValue::adjustedCollapsedBorderWidth(topWidth, deviceScaleFactor, false);
LayoutUnit righHalftCollapsedBorder = CollapsedBorderValue::adjustedCollapsedBorderWidth(rightWidth, deviceScaleFactor, true);
LayoutUnit bottomHalfCollapsedBorder = CollapsedBorderValue::adjustedCollapsedBorderWidth(bottomWidth, deviceScaleFactor, true);
LayoutRect borderRect = LayoutRect(paintRect.x() - leftHalfCollapsedBorder,
paintRect.y() - topHalfCollapsedBorder,
paintRect.width() + leftHalfCollapsedBorder + righHalftCollapsedBorder,
paintRect.height() + topHalfCollapsedBorder + bottomHalfCollapsedBorder);
BorderStyle topStyle = collapsedBorderStyle(topVal.style());
BorderStyle bottomStyle = collapsedBorderStyle(bottomVal.style());
BorderStyle leftStyle = collapsedBorderStyle(leftVal.style());
BorderStyle rightStyle = collapsedBorderStyle(rightVal.style());
bool renderTop = topStyle > BorderStyle::Hidden && !topVal.isTransparent() && floorToDevicePixel(topWidth, deviceScaleFactor);
bool renderBottom = bottomStyle > BorderStyle::Hidden && !bottomVal.isTransparent() && floorToDevicePixel(bottomWidth, deviceScaleFactor);
bool renderLeft = leftStyle > BorderStyle::Hidden && !leftVal.isTransparent() && floorToDevicePixel(leftWidth, deviceScaleFactor);
bool renderRight = rightStyle > BorderStyle::Hidden && !rightVal.isTransparent() && floorToDevicePixel(rightWidth, deviceScaleFactor);
// 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, BoxSide::Top, renderTop, borderRect.x(), borderRect.y(), borderRect.maxX(), borderRect.y() + topWidth, topStyle);
borders.addBorder(bottomVal, BoxSide::Bottom, renderBottom, borderRect.x(), borderRect.maxY() - bottomWidth, borderRect.maxX(), borderRect.maxY(), bottomStyle);
borders.addBorder(leftVal, BoxSide::Left, renderLeft, borderRect.x(), borderRect.y(), borderRect.x() + leftWidth, borderRect.maxY(), leftStyle);
borders.addBorder(rightVal, BoxSide::Right, renderRight, borderRect.maxX() - rightWidth, borderRect.y(), borderRect.maxX(), borderRect.maxY(), rightStyle);
bool antialias = BorderPainter::shouldAntialiasLines(graphicsContext);
for (CollapsedBorder* border = borders.nextBorder(); border; border = borders.nextBorder()) {
if (border->borderValue.isSameIgnoringColor(*table()->currentBorderValue()))
BorderPainter::drawLineForBoxSide(graphicsContext, document(), LayoutRect(LayoutPoint(border->x1, border->y1), LayoutPoint(border->x2, border->y2)), border->side,
border->borderValue.color(), border->style, 0, 0, antialias);
}
}
static LayoutRect backgroundRectForRow(const RenderBox& tableRow, const RenderTable& table)
{
LayoutRect rect = tableRow.frameRect();
if (!table.collapseBorders()) {
// Row frameRects include unwanted hSpacing on both inline ends.
auto hSpacing = table.hBorderSpacing();
LayoutUnit vSpacing = 0_lu;
if (table.writingMode().isHorizontal())
rect.contract({ vSpacing, hSpacing, vSpacing, hSpacing });
else
rect.contract({ hSpacing, vSpacing, hSpacing, vSpacing });
}
return rect;
}
static LayoutRect backgroundRectForSection(const RenderTableSection& tableSection, const RenderTable& table)
{
LayoutRect rect = { { }, tableSection.size() };
if (!table.collapseBorders()) {
auto hSpacing = table.hBorderSpacing();
auto vSpacing = table.vBorderSpacing();
// All sections' size()s include unwanted vSpacing at the block-end
// position. The first section's size() includes additional unwanted
// vSpacing at the block-start position. All sections' size()s include
// unwanted hSpacing on both inline ends.
auto beforeBlockSpacing = &tableSection == table.topSection() ? vSpacing : 0_lu;
if (table.writingMode().isHorizontal())
rect.contract({ beforeBlockSpacing, hSpacing, vSpacing, hSpacing });
else if (table.writingMode().isBlockFlipped())
rect.contract({ hSpacing, beforeBlockSpacing, hSpacing, vSpacing });
else
rect.contract({ hSpacing, vSpacing, hSpacing, beforeBlockSpacing });
}
return rect;
}
void RenderTableCell::paintBackgroundsBehindCell(PaintInfo& paintInfo, LayoutPoint paintOffset, RenderBox* backgroundObject, LayoutPoint backgroundPaintOffset)
{
ASSERT(backgroundObject);
if (!paintInfo.shouldPaintWithinRoot(*this))
return;
if (style().usedVisibility() != Visibility::Visible)
return;
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style().emptyCells() == EmptyCell::Hide && !firstChild())
return;
const auto& style = backgroundObject->style();
auto& bgLayers = style.backgroundLayers();
auto color = style.visitedDependentBackgroundColor();
if (!Style::hasImageInAnyLayer(bgLayers) && !color.isVisible())
return;
Style::ColorResolver colorResolver { style };
color = colorResolver.colorApplyingColorFilter(color);
LayoutPoint adjustedPaintOffset = paintOffset;
if (backgroundObject != this)
adjustedPaintOffset.moveBy(location());
// Background images attached to the row or row group must span the row
// or row group. Draw them at the backgroundObject's dimensions, but
// clipped to this cell.
// FIXME: This should also apply to columns and column groups.
bool paintBackgroundObject = backgroundObject != this && Style::hasImageInAnyLayer(bgLayers) && !is<RenderTableCol>(backgroundObject);
// 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 = paintBackgroundObject || (backgroundObject->hasLayer() && (backgroundObject == this || backgroundObject == parent()) && tableElt->collapseBorders());
GraphicsContextStateSaver stateSaver(paintInfo.context(), shouldClip);
if (paintBackgroundObject)
paintInfo.context().clip({ adjustedPaintOffset, size() });
else if (shouldClip) {
LayoutRect clipRect(adjustedPaintOffset.x() + borderLeft(), adjustedPaintOffset.y() + borderTop(),
width() - borderLeft() - borderRight(), height() - borderTop() - borderBottom());
paintInfo.context().clip(clipRect);
}
LayoutRect fillRect;
if (paintBackgroundObject) {
if (auto* tableSectionRenderer = dynamicDowncast<RenderTableSection>(backgroundObject))
fillRect = backgroundRectForSection(*tableSectionRenderer, *tableElt);
else
fillRect = backgroundRectForRow(*backgroundObject, *tableElt);
fillRect.moveBy(backgroundPaintOffset);
} else
fillRect = LayoutRect { adjustedPaintOffset, size() };
auto compositeOp = document().compositeOperatorForBackgroundColor(color, *this);
BackgroundPainter painter { *this, paintInfo };
auto hasBackgroundClipText = style.backgroundLayers().usedFirst().clip() == FillBox::Text;
if (backgroundObject != this && !hasBackgroundClipText) {
painter.setOverrideClip(FillBox::BorderBox);
painter.setOverrideOrigin(FillBox::BorderBox);
}
painter.paintFillLayers(color, bgLayers, fillRect, BleedAvoidance::None, compositeOp, backgroundObject);
}
void RenderTableCell::paintBoxDecorations(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (!paintInfo.shouldPaintWithinRoot(*this))
return;
RenderTable* table = this->table();
if (!table->collapseBorders() && style().emptyCells() == EmptyCell::Hide && !firstChild())
return;
LayoutRect paintRect = LayoutRect(paintOffset, frameRect().size());
adjustBorderBoxRectForPainting(paintRect);
BackgroundPainter backgroundPainter { *this, paintInfo };
backgroundPainter.paintBoxShadow(paintRect, style(), Style::ShadowStyle::Normal);
// Paint our cell background.
paintBackgroundsBehindCell(paintInfo, paintOffset, this, paintOffset);
backgroundPainter.paintBoxShadow(paintRect, style(), Style::ShadowStyle::Inset);
if (!style().hasBorder() || table->collapseBorders())
return;
BorderPainter borderPainter { *this, paintInfo };
borderPainter.paintBorder(paintRect, style());
}
void RenderTableCell::paintMask(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (style().usedVisibility() != Visibility::Visible || paintInfo.phase != PaintPhase::Mask)
return;
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style().emptyCells() == EmptyCell::Hide && !firstChild())
return;
LayoutRect paintRect = LayoutRect(paintOffset, frameRect().size());
adjustBorderBoxRectForPainting(paintRect);
paintMaskImages(paintInfo, paintRect);
}
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 ((WTF::holdsAlternative<CSS::Keyword::Middle>(style().verticalAlign()) && style().alignContent().isNormal())
|| style().alignContent().resolve().isCentered()) {
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);
}
bool RenderTableCell::hasLineIfEmpty() const
{
if (element() && element()->hasEditableStyle())
return true;
return RenderBlock::hasLineIfEmpty();
}
} // namespace WebCore