| /* |
| * 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 "ElementInlines.h" |
| #include "FloatQuad.h" |
| #include "GraphicsContext.h" |
| #include "HTMLNames.h" |
| #include "HTMLTableCellElement.h" |
| #include "PaintInfo.h" |
| #include "RenderTableCol.h" |
| #include "RenderTheme.h" |
| #include "RenderView.h" |
| #include "Settings.h" |
| #include "StyleProperties.h" |
| #include "TransformState.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/StackStats.h> |
| |
| #if ENABLE(MATHML) |
| #include "MathMLElement.h" |
| #include "MathMLNames.h" |
| #endif |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(RenderTableCell); |
| |
| struct SameSizeAsRenderTableCell : public RenderBlockFlow { |
| unsigned bitfields; |
| LayoutUnit padding[2]; |
| }; |
| |
| 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(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, RenderStyle&& 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(IsInternalMove isInternalMove) |
| { |
| RenderBlockFlow::willBeRemovedFromTree(isInternalMove); |
| if (!table() || !section()) |
| return; |
| RenderTableSection* section = this->section(); |
| table()->invalidateCollapsedBorders(); |
| section->setNeedsCellRecalc(); |
| } |
| |
| unsigned RenderTableCell::parseColSpanFromDOM() const |
| { |
| ASSERT(element()); |
| if (is<HTMLTableCellElement>(*element())) |
| return std::min<unsigned>(downcast<HTMLTableCellElement>(*element()).colSpan(), maxColumnIndex); |
| #if ENABLE(MATHML) |
| if (element()->hasTagName(MathMLNames::mtdTag)) |
| return std::min<unsigned>(downcast<MathMLElement>(*element()).colSpan(), maxColumnIndex); |
| #endif |
| return 1; |
| } |
| |
| unsigned RenderTableCell::parseRowSpanFromDOM() const |
| { |
| ASSERT(element()); |
| if (is<HTMLTableCellElement>(*element())) |
| return std::min<unsigned>(downcast<HTMLTableCellElement>(*element()).rowSpan(), maxRowIndex); |
| #if ENABLE(MATHML) |
| if (element()->hasTagName(MathMLNames::mtdTag)) |
| return std::min<unsigned>(downcast<MathMLElement>(*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; |
| 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 <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 Length(std::max<LayoutUnit>(0, colWidthSum - borderAndPaddingLogicalWidth()), LengthType::Fixed); |
| return Length(colWidthSum, LengthType::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()->hasAttributeWithoutSynchronization(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(LayoutUnit(w.value()), 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; |
| } |
| |
| void RenderTableCell::computeIntrinsicPadding(LayoutUnit rowHeight) |
| { |
| LayoutUnit oldIntrinsicPaddingBefore = intrinsicPaddingBefore(); |
| LayoutUnit oldIntrinsicPaddingAfter = intrinsicPaddingAfter(); |
| LayoutUnit logicalHeightWithoutIntrinsicPadding = logicalHeight() - oldIntrinsicPaddingBefore - oldIntrinsicPaddingAfter; |
| |
| auto intrinsicPaddingBefore = oldIntrinsicPaddingBefore; |
| switch (style().verticalAlign()) { |
| case VerticalAlign::Sub: |
| case VerticalAlign::Super: |
| case VerticalAlign::TextTop: |
| case VerticalAlign::TextBottom: |
| case VerticalAlign::Length: |
| case VerticalAlign::Baseline: { |
| auto baseline = cellBaselinePosition(); |
| auto needsIntrinsicPadding = baseline > borderAndPaddingBefore() || !logicalHeight(); |
| if (needsIntrinsicPadding) |
| intrinsicPaddingBefore = section()->rowBaseline(rowIndex()) - (baseline - oldIntrinsicPaddingBefore); |
| break; |
| } |
| case VerticalAlign::Top: |
| break; |
| case VerticalAlign::Middle: |
| intrinsicPaddingBefore = (rowHeight - logicalHeightWithoutIntrinsicPadding) / 2; |
| break; |
| case VerticalAlign::Bottom: |
| intrinsicPaddingBefore = rowHeight - logicalHeightWithoutIntrinsicPadding; |
| break; |
| case VerticalAlign::BaselineMiddle: |
| 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; |
| |
| 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<LayoutUnit>(0, intrinsicPaddingBefore() - std::max<LayoutUnit>(0, cellBaselinePosition() - oldCellBaseline)); |
| setIntrinsicPaddingBefore(newIntrinsicPaddingBefore); |
| setNeedsLayout(MarkOnlyThis); |
| layoutBlock(cellWidthChanged()); |
| } |
| 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(contentLogicalHeight()); |
| |
| setCellWidthChanged(false); |
| } |
| |
| LayoutUnit RenderTableCell::paddingTop() const |
| { |
| LayoutUnit result = computedCSSPaddingTop(); |
| if (!isHorizontalWritingMode()) |
| return result; |
| return result + (style().writingMode() == WritingMode::TopToBottom ? intrinsicPaddingBefore() : intrinsicPaddingAfter()); |
| } |
| |
| LayoutUnit RenderTableCell::paddingBottom() const |
| { |
| LayoutUnit result = computedCSSPaddingBottom(); |
| if (!isHorizontalWritingMode()) |
| return result; |
| return result + (style().writingMode() == WritingMode::TopToBottom ? intrinsicPaddingAfter() : intrinsicPaddingBefore()); |
| } |
| |
| LayoutUnit RenderTableCell::paddingLeft() const |
| { |
| LayoutUnit result = computedCSSPaddingLeft(); |
| if (isHorizontalWritingMode()) |
| return result; |
| return result + (style().writingMode() == WritingMode::LeftToRight ? intrinsicPaddingBefore() : intrinsicPaddingAfter()); |
| } |
| |
| LayoutUnit RenderTableCell::paddingRight() const |
| { |
| LayoutUnit result = computedCSSPaddingRight(); |
| if (isHorizontalWritingMode()) |
| return result; |
| return result + (style().writingMode() == WritingMode::LeftToRight ? intrinsicPaddingAfter() : intrinsicPaddingBefore()); |
| } |
| |
| LayoutUnit RenderTableCell::paddingBefore() const |
| { |
| return computedCSSPaddingBefore() + intrinsicPaddingBefore(); |
| } |
| |
| LayoutUnit RenderTableCell::paddingAfter() const |
| { |
| return computedCSSPaddingAfter() + intrinsicPaddingAfter(); |
| } |
| |
| void RenderTableCell::setOverridingLogicalHeightFromRowHeight(LayoutUnit rowHeight) |
| { |
| clearIntrinsicPadding(); |
| setOverridingLogicalHeight(rowHeight); |
| } |
| |
| 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::clippedOverflowRect(const RenderLayerModelObject* repaintContainer, VisibleRectContext context) 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::clippedOverflowRect(repaintContainer, context); |
| |
| 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<LayoutUnit>(left, -visualOverflowRect().x()), std::max<LayoutUnit>(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().frameView().layoutContext().layoutDelta()); |
| return computeRect(r, repaintContainer, context); |
| } |
| |
| std::optional<LayoutRect> RenderTableCell::computeVisibleRectInContainer(const LayoutRect& rect, const RenderLayerModelObject* container, VisibleRectContext context) const |
| { |
| if (container == this) |
| return rect; |
| LayoutRect adjustedRect = rect; |
| if ((!view().frameView().layoutContext().isPaintOffsetCacheEnabled() || container || context.options.contains(VisibleRectContextOption::UseEdgeInclusiveIntersection)) && parent()) |
| adjustedRect.moveBy(-parentBox()->location()); // Rows are in the same coordinate space, so don't add their offset in. |
| return RenderBlockFlow::computeVisibleRectInContainer(adjustedRect, 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. |
| return firstLineBaseline().value_or(borderAndPaddingBefore() + contentLogicalHeight()); |
| } |
| |
| static inline void markCellDirtyWhenCollapsedBorderChanges(RenderTableCell* cell) |
| { |
| if (!cell) |
| return; |
| cell->setNeedsLayoutAndPrefWidthsRecalc(); |
| } |
| |
| void RenderTableCell::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) |
| { |
| ASSERT(style().display() == DisplayType::TableCell); |
| ASSERT(!row() || row()->rowIndexWasSet()); |
| |
| RenderBlockFlow::styleDidChange(diff, oldStyle); |
| setHasVisibleBoxDecorations(true); // FIXME: Optimize this to only set to true if necessary. |
| |
| 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 == StyleDifference::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 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() == BorderStyle::Hidden) { |
| if (border1.style() == BorderStyle::Hidden) |
| return 0; |
| return -1; |
| } |
| if (border1.style() == BorderStyle::Hidden) |
| return 1; |
| |
| // Rule #2 above. A style of 'none' has lowest priority and always loses to any other border. |
| if (border2.style() == BorderStyle::None) { |
| if (border1.style() == BorderStyle::None) |
| return 0; |
| return 1; |
| } |
| if (border1.style() == BorderStyle::None) |
| 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() == BorderStyle::Hidden ? CollapsedBorderValue() : border; |
| } |
| |
| bool RenderTableCell::hasStartBorderAdjoiningTable() const |
| { |
| bool isStartColumn = !col(); |
| bool isEndColumn = table()->colToEffCol(col() + colSpan() - 1) == table()->numEffCols() - 1; |
| bool hasSameDirectionAsTable = isDirectionSame(this, 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 = isDirectionSame(this, 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(), BorderPrecedence::Cell); |
| } |
| |
| 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. |
| CSSPropertyID startColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderInlineStartColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : CSSPropertyInvalid; |
| CSSPropertyID endColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderInlineEndColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : CSSPropertyInvalid; |
| CollapsedBorderValue result(style().borderStart(), includeColor ? style().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::Cell); |
| |
| 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().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::Cell); |
| // |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().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::Row)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) Our row group's start border. |
| result = chooseBorder(result, CollapsedBorderValue(section()->borderAdjoiningStartCell(*this), includeColor ? section()->style().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::RowGroup)); |
| 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 ? colElt->style().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::ColumnGroup)); |
| 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 ? colElt->style().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::Column)); |
| 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 ? enclosingColumnGroup->style().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::ColumnGroup)); |
| 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().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::ColumnGroup), 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().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::Column), 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 ? enclosingColumnGroup->style().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::ColumnGroup), result); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| } |
| } |
| |
| if (startBorderAdjoinsTable) { |
| // (7) The table's start border. |
| result = chooseBorder(result, CollapsedBorderValue(table->tableStartBorderAdjoiningCell(*this), includeColor ? table->style().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::Table)); |
| 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, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : CSSPropertyInvalid; |
| CSSPropertyID endColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderInlineEndColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : CSSPropertyInvalid; |
| CollapsedBorderValue result = CollapsedBorderValue(style().borderEnd(), includeColor ? style().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::Cell); |
| |
| 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().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::Cell); |
| 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().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::Row)); |
| if (!result.exists()) |
| return result; |
| |
| // (4) Our row group's end border. |
| result = chooseBorder(result, CollapsedBorderValue(section()->borderAdjoiningEndCell(*this), includeColor ? section()->style().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::RowGroup)); |
| 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 ? colElt->style().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::ColumnGroup)); |
| 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 ? colElt->style().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::Column)); |
| 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 ? enclosingColumnGroup->style().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::ColumnGroup)); |
| 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().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::ColumnGroup)); |
| 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().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::Column)); |
| 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 ? enclosingColumnGroup->style().visitedDependentColorWithColorFilter(startColorProperty) : Color(), BorderPrecedence::ColumnGroup)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| } |
| } |
| |
| if (endBorderAdjoinsTable) { |
| // (7) The table's end border. |
| result = chooseBorder(result, CollapsedBorderValue(table->tableEndBorderAdjoiningCell(*this), includeColor ? table->style().visitedDependentColorWithColorFilter(endColorProperty) : Color(), BorderPrecedence::Table)); |
| 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, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : CSSPropertyInvalid; |
| CSSPropertyID afterColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderBlockEndColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : CSSPropertyInvalid; |
| CollapsedBorderValue result = CollapsedBorderValue(style().borderBefore(), includeColor ? style().visitedDependentColorWithColorFilter(beforeColorProperty) : Color(), BorderPrecedence::Cell); |
| |
| 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().visitedDependentColorWithColorFilter(afterColorProperty) : Color(), BorderPrecedence::Cell), result); |
| if (!result.exists()) |
| return result; |
| } |
| |
| // (3) Our row's before border. |
| result = chooseBorder(result, CollapsedBorderValue(parent()->style().borderBefore(), includeColor ? parent()->style().visitedDependentColorWithColorFilter(beforeColorProperty) : Color(), BorderPrecedence::Row)); |
| 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().visitedDependentColorWithColorFilter(afterColorProperty) : Color(), BorderPrecedence::Row), 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().visitedDependentColorWithColorFilter(beforeColorProperty) : Color(), BorderPrecedence::RowGroup)); |
| 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().visitedDependentColorWithColorFilter(afterColorProperty) : Color(), BorderPrecedence::RowGroup), 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().visitedDependentColorWithColorFilter(beforeColorProperty) : Color(), BorderPrecedence::Column)); |
| if (!result.exists()) |
| return result; |
| if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroup()) { |
| result = chooseBorder(result, CollapsedBorderValue(enclosingColumnGroup->style().borderBefore(), includeColor ? enclosingColumnGroup->style().visitedDependentColorWithColorFilter(beforeColorProperty) : Color(), BorderPrecedence::ColumnGroup)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (9) The table's before border. |
| result = chooseBorder(result, CollapsedBorderValue(table->style().borderBefore(), includeColor ? table->style().visitedDependentColorWithColorFilter(beforeColorProperty) : Color(), BorderPrecedence::Table)); |
| 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, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : CSSPropertyInvalid; |
| CSSPropertyID afterColorProperty = includeColor ? CSSProperty::resolveDirectionAwareProperty(CSSPropertyBorderBlockEndColor, styleForCellFlow().direction(), styleForCellFlow().writingMode()) : CSSPropertyInvalid; |
| CollapsedBorderValue result = CollapsedBorderValue(style().borderAfter(), includeColor ? style().visitedDependentColorWithColorFilter(afterColorProperty) : Color(), BorderPrecedence::Cell); |
| |
| 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().visitedDependentColorWithColorFilter(beforeColorProperty) : Color(), BorderPrecedence::Cell)); |
| 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().visitedDependentColorWithColorFilter(afterColorProperty) : Color(), BorderPrecedence::Row)); |
| 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().visitedDependentColorWithColorFilter(beforeColorProperty) : Color(), BorderPrecedence::Row)); |
| 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().visitedDependentColorWithColorFilter(afterColorProperty) : Color(), BorderPrecedence::RowGroup)); |
| 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().visitedDependentColorWithColorFilter(beforeColorProperty) : Color(), BorderPrecedence::RowGroup)); |
| 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().visitedDependentColorWithColorFilter(afterColorProperty) : Color(), BorderPrecedence::Column)); |
| if (!result.exists()) return result; |
| if (RenderTableCol* enclosingColumnGroup = colElt->enclosingColumnGroup()) { |
| result = chooseBorder(result, CollapsedBorderValue(enclosingColumnGroup->style().borderAfter(), includeColor ? enclosingColumnGroup->style().visitedDependentColorWithColorFilter(afterColorProperty) : Color(), BorderPrecedence::ColumnGroup)); |
| if (!result.exists()) |
| return result; |
| } |
| } |
| |
| // (9) The table's after border. |
| result = chooseBorder(result, CollapsedBorderValue(table->style().borderAfter(), includeColor ? table->style().visitedDependentColorWithColorFilter(afterColorProperty) : Color(), BorderPrecedence::Table)); |
| 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 CollapsedBorderValue::adjustedCollapsedBorderWidth(border.width(), document().deviceScaleFactor(), styleForCellFlow().isLeftToRightDirection() ^ outer); |
| return 0; |
| } |
| |
| LayoutUnit RenderTableCell::borderHalfEnd(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedEndBorder(DoNotIncludeBorderColor); |
| if (border.exists()) |
| return CollapsedBorderValue::adjustedCollapsedBorderWidth(border.width(), document().deviceScaleFactor(), !(styleForCellFlow().isLeftToRightDirection() ^ outer)); |
| return 0; |
| } |
| |
| LayoutUnit RenderTableCell::borderHalfBefore(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedBeforeBorder(DoNotIncludeBorderColor); |
| if (border.exists()) |
| return CollapsedBorderValue::adjustedCollapsedBorderWidth(border.width(), document().deviceScaleFactor(), !(styleForCellFlow().isFlippedBlocksWritingMode() ^ outer)); |
| return 0; |
| } |
| |
| LayoutUnit RenderTableCell::borderHalfAfter(bool outer) const |
| { |
| CollapsedBorderValue border = collapsedAfterBorder(DoNotIncludeBorderColor); |
| if (border.exists()) |
| return CollapsedBorderValue::adjustedCollapsedBorderWidth(border.width(), document().deviceScaleFactor(), styleForCellFlow().isFlippedBlocksWritingMode() ^ 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; |
| } |
| |
| 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<const CollapsedBorderValue*>(pa); |
| const CollapsedBorderValue* b = static_cast<const CollapsedBorderValue*>(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 == PaintPhase::CollapsedTableBorders); |
| |
| if (!paintInfo.shouldPaintWithinRoot(*this) || style().visibility() != 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(); |
| |
| 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 = 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() != Visibility::Visible) |
| return; |
| |
| RenderTable* tableElt = table(); |
| if (!tableElt->collapseBorders() && style().emptyCells() == EmptyCell::Hide && !firstChild()) |
| return; |
| |
| const auto& style = backgroundObject->style(); |
| auto& bgLayer = style.backgroundLayers(); |
| |
| auto color = style.visitedDependentColor(CSSPropertyBackgroundColor); |
| if (!bgLayer.hasImage() && !color.isVisible()) |
| return; |
| |
| color = style.colorByApplyingColorFilter(color); |
| |
| LayoutPoint adjustedPaintOffset = paintOffset; |
| if (backgroundObject != this) |
| adjustedPaintOffset.moveBy(location()); |
| |
| // 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); |
| } |
| auto compositeOp = document().compositeOperatorForBackgroundColor(color, *this); |
| paintFillLayers(paintInfo, color, bgLayer, LayoutRect(adjustedPaintOffset, frameRect().size()), BackgroundBleedNone, 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); |
| |
| paintBoxShadow(paintInfo, paintRect, style(), ShadowStyle::Normal); |
| |
| // Paint our cell background. |
| paintBackgroundsBehindCell(paintInfo, paintOffset, this); |
| |
| paintBoxShadow(paintInfo, paintRect, style(), ShadowStyle::Inset); |
| |
| if (!style().hasBorder() || table->collapseBorders()) |
| return; |
| |
| paintBorder(paintInfo, paintRect, style()); |
| } |
| |
| void RenderTableCell::paintMask(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
| { |
| if (style().visibility() != 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); |
| } |
| |
| bool RenderTableCell::boxShadowShouldBeAppliedToBackground(const LayoutPoint&, BackgroundBleedAvoidance, const InlineIterator::InlineBoxIterator&) 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() == 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); |
| } |
| |
| RenderPtr<RenderTableCell> RenderTableCell::createTableCellWithStyle(Document& document, const RenderStyle& style) |
| { |
| auto cell = createRenderer<RenderTableCell>(document, RenderStyle::createAnonymousStyleWithDisplay(style, DisplayType::TableCell)); |
| cell->initializeStyle(); |
| return cell; |
| } |
| |
| RenderPtr<RenderTableCell> RenderTableCell::createAnonymousWithParentRenderer(const RenderTableRow& parent) |
| { |
| return RenderTableCell::createTableCellWithStyle(parent.document(), parent.style()); |
| } |
| |
| bool RenderTableCell::hasLineIfEmpty() const |
| { |
| if (element() && element()->hasEditableStyle()) |
| return true; |
| |
| return RenderBlock::hasLineIfEmpty(); |
| } |
| |
| } // namespace WebCore |
