| /* |
| * 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, 2010, 2014 Apple Inc. All rights reserved. |
| * Copyright (C) 2006 Alexey Proskuryakov (ap@nypop.com) |
| * |
| * 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 "RenderTable.h" |
| |
| #include "AutoTableLayout.h" |
| #include "CollapsedBorderValue.h" |
| #include "Document.h" |
| #include "FixedTableLayout.h" |
| #include "FrameView.h" |
| #include "HitTestResult.h" |
| #include "HTMLNames.h" |
| #include "HTMLTableElement.h" |
| #include "LayoutRepainter.h" |
| #include "RenderBlockFlow.h" |
| #include "RenderChildIterator.h" |
| #include "RenderDescendantIterator.h" |
| #include "RenderIterator.h" |
| #include "RenderLayer.h" |
| #include "RenderLayoutState.h" |
| #include "RenderTableCaption.h" |
| #include "RenderTableCell.h" |
| #include "RenderTableCol.h" |
| #include "RenderTableSection.h" |
| #include "RenderTreeBuilder.h" |
| #include "RenderView.h" |
| #include "StyleInheritedData.h" |
| #include <wtf/IsoMallocInlines.h> |
| #include <wtf/SetForScope.h> |
| #include <wtf/StackStats.h> |
| |
| namespace WebCore { |
| |
| using namespace HTMLNames; |
| |
| WTF_MAKE_ISO_ALLOCATED_IMPL(RenderTable); |
| |
| RenderTable::RenderTable(Element& element, RenderStyle&& style) |
| : RenderBlock(element, WTFMove(style), 0) |
| , m_currentBorder(nullptr) |
| , m_collapsedBordersValid(false) |
| , m_collapsedEmptyBorderIsPresent(false) |
| , m_hasColElements(false) |
| , m_needsSectionRecalc(false) |
| , m_columnLogicalWidthChanged(false) |
| , m_columnRenderersValid(false) |
| , m_hasCellColspanThatDeterminesTableWidth(false) |
| , m_borderStart(0) |
| , m_borderEnd(0) |
| , m_columnOffsetTop(-1) |
| , m_columnOffsetHeight(-1) |
| { |
| setChildrenInline(false); |
| m_columnPos.fill(0, 1); |
| } |
| |
| RenderTable::RenderTable(Document& document, RenderStyle&& style) |
| : RenderBlock(document, WTFMove(style), 0) |
| , m_currentBorder(nullptr) |
| , m_collapsedBordersValid(false) |
| , m_collapsedEmptyBorderIsPresent(false) |
| , m_hasColElements(false) |
| , m_needsSectionRecalc(false) |
| , m_columnLogicalWidthChanged(false) |
| , m_columnRenderersValid(false) |
| , m_hasCellColspanThatDeterminesTableWidth(false) |
| , m_borderStart(0) |
| , m_borderEnd(0) |
| { |
| setChildrenInline(false); |
| m_columnPos.fill(0, 1); |
| } |
| |
| RenderTable::~RenderTable() = default; |
| |
| RenderTableSection* RenderTable::header() const |
| { |
| return m_head.get(); |
| } |
| |
| RenderTableSection* RenderTable::footer() const |
| { |
| return m_foot.get(); |
| } |
| |
| RenderTableSection* RenderTable::firstBody() const |
| { |
| return m_firstBody.get(); |
| } |
| |
| RenderTableSection* RenderTable::topSection() const |
| { |
| ASSERT(!needsSectionRecalc()); |
| if (m_head) |
| return m_head.get(); |
| if (m_firstBody) |
| return m_firstBody.get(); |
| return m_foot.get(); |
| } |
| |
| void RenderTable::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle) |
| { |
| RenderBlock::styleDidChange(diff, oldStyle); |
| propagateStyleToAnonymousChildren(PropagateToAllChildren); |
| |
| auto oldTableLayout = oldStyle ? oldStyle->tableLayout() : TableLayoutType::Auto; |
| |
| // In the collapsed border model, there is no cell spacing. |
| m_hSpacing = collapseBorders() ? 0 : style().horizontalBorderSpacing(); |
| m_vSpacing = collapseBorders() ? 0 : style().verticalBorderSpacing(); |
| m_columnPos[0] = m_hSpacing; |
| |
| if (!m_tableLayout || style().tableLayout() != oldTableLayout) { |
| // According to the CSS2 spec, you only use fixed table layout if an |
| // explicit width is specified on the table. Auto width implies auto table layout. |
| if (style().tableLayout() == TableLayoutType::Fixed && !style().logicalWidth().isAuto()) |
| m_tableLayout = makeUnique<FixedTableLayout>(this); |
| else |
| m_tableLayout = makeUnique<AutoTableLayout>(this); |
| } |
| |
| // If border was changed, invalidate collapsed borders cache. |
| if (oldStyle && oldStyle->border() != style().border()) |
| invalidateCollapsedBorders(); |
| } |
| |
| static inline void resetSectionPointerIfNotBefore(WeakPtr<RenderTableSection>& section, RenderObject* before) |
| { |
| if (!before || !section) |
| return; |
| auto* previousSibling = before->previousSibling(); |
| while (previousSibling && previousSibling != section) |
| previousSibling = previousSibling->previousSibling(); |
| if (!previousSibling) |
| section.clear(); |
| } |
| |
| void RenderTable::willInsertTableColumn(RenderTableCol&, RenderObject*) |
| { |
| m_hasColElements = true; |
| } |
| |
| void RenderTable::willInsertTableSection(RenderTableSection& child, RenderObject* beforeChild) |
| { |
| switch (child.style().display()) { |
| case DisplayType::TableHeaderGroup: |
| resetSectionPointerIfNotBefore(m_head, beforeChild); |
| if (!m_head) |
| m_head = makeWeakPtr(child); |
| else { |
| resetSectionPointerIfNotBefore(m_firstBody, beforeChild); |
| if (!m_firstBody) |
| m_firstBody = makeWeakPtr(child); |
| } |
| break; |
| case DisplayType::TableFooterGroup: |
| resetSectionPointerIfNotBefore(m_foot, beforeChild); |
| if (!m_foot) { |
| m_foot = makeWeakPtr(child); |
| break; |
| } |
| FALLTHROUGH; |
| case DisplayType::TableRowGroup: |
| resetSectionPointerIfNotBefore(m_firstBody, beforeChild); |
| if (!m_firstBody) |
| m_firstBody = makeWeakPtr(child); |
| break; |
| default: |
| ASSERT_NOT_REACHED(); |
| } |
| |
| setNeedsSectionRecalc(); |
| } |
| |
| void RenderTable::addCaption(RenderTableCaption& caption) |
| { |
| ASSERT(m_captions.find(&caption) == notFound); |
| m_captions.append(makeWeakPtr(caption)); |
| } |
| |
| void RenderTable::removeCaption(RenderTableCaption& oldCaption) |
| { |
| bool removed = m_captions.removeFirst(&oldCaption); |
| ASSERT_UNUSED(removed, removed); |
| } |
| |
| void RenderTable::invalidateCachedColumns() |
| { |
| m_columnRenderersValid = false; |
| m_columnRenderers.shrink(0); |
| m_effectiveColumnIndexMap.clear(); |
| } |
| |
| void RenderTable::invalidateCachedColumnOffsets() |
| { |
| m_columnOffsetTop = -1; |
| m_columnOffsetHeight = -1; |
| } |
| |
| void RenderTable::addColumn(const RenderTableCol*) |
| { |
| invalidateCachedColumns(); |
| } |
| |
| void RenderTable::removeColumn(const RenderTableCol*) |
| { |
| invalidateCachedColumns(); |
| // We don't really need to recompute our sections, but we need to update our |
| // column count and whether we have a column. Currently, we only have one |
| // size-fit-all flag but we may have to consider splitting it. |
| setNeedsSectionRecalc(); |
| } |
| |
| void RenderTable::updateLogicalWidth() |
| { |
| recalcSectionsIfNeeded(); |
| |
| if (isOutOfFlowPositioned()) { |
| LogicalExtentComputedValues computedValues; |
| computePositionedLogicalWidth(computedValues); |
| setLogicalWidth(computedValues.m_extent); |
| setLogicalLeft(computedValues.m_position); |
| setMarginStart(computedValues.m_margins.m_start); |
| setMarginEnd(computedValues.m_margins.m_end); |
| } |
| |
| RenderBlock& cb = *containingBlock(); |
| |
| LayoutUnit availableLogicalWidth = containingBlockLogicalWidthForContent(); |
| bool hasPerpendicularContainingBlock = cb.style().isHorizontalWritingMode() != style().isHorizontalWritingMode(); |
| LayoutUnit containerWidthInInlineDirection = hasPerpendicularContainingBlock ? perpendicularContainingBlockLogicalHeight() : availableLogicalWidth; |
| |
| Length styleLogicalWidth = style().logicalWidth(); |
| if ((styleLogicalWidth.isSpecified() && styleLogicalWidth.isPositive()) || styleLogicalWidth.isIntrinsic()) |
| setLogicalWidth(convertStyleLogicalWidthToComputedWidth(styleLogicalWidth, containerWidthInInlineDirection)); |
| else { |
| // Subtract out any fixed margins from our available width for auto width tables. |
| LayoutUnit marginStart = minimumValueForLength(style().marginStart(), availableLogicalWidth); |
| LayoutUnit marginEnd = minimumValueForLength(style().marginEnd(), availableLogicalWidth); |
| LayoutUnit marginTotal = marginStart + marginEnd; |
| |
| // Subtract out our margins to get the available content width. |
| LayoutUnit availableContentLogicalWidth = std::max<LayoutUnit>(0, containerWidthInInlineDirection - marginTotal); |
| if (shrinkToAvoidFloats() && cb.containsFloats() && !hasPerpendicularContainingBlock) { |
| // FIXME: Work with regions someday. |
| availableContentLogicalWidth = shrinkLogicalWidthToAvoidFloats(marginStart, marginEnd, cb, 0); |
| } |
| |
| // Ensure we aren't bigger than our available width. |
| setLogicalWidth(std::min(availableContentLogicalWidth, maxPreferredLogicalWidth())); |
| LayoutUnit maxWidth = maxPreferredLogicalWidth(); |
| // scaledWidthFromPercentColumns depends on m_layoutStruct in TableLayoutAlgorithmAuto, which |
| // maxPreferredLogicalWidth fills in. So scaledWidthFromPercentColumns has to be called after |
| // maxPreferredLogicalWidth. |
| LayoutUnit scaledWidth = m_tableLayout->scaledWidthFromPercentColumns() + bordersPaddingAndSpacingInRowDirection(); |
| maxWidth = std::max(scaledWidth, maxWidth); |
| setLogicalWidth(std::min(availableContentLogicalWidth, maxWidth)); |
| } |
| |
| // Ensure we aren't smaller than our min preferred width. |
| setLogicalWidth(std::max(logicalWidth(), minPreferredLogicalWidth())); |
| |
| |
| // Ensure we aren't bigger than our max-width style. |
| Length styleMaxLogicalWidth = style().logicalMaxWidth(); |
| if ((styleMaxLogicalWidth.isSpecified() && !styleMaxLogicalWidth.isNegative()) || styleMaxLogicalWidth.isIntrinsic()) { |
| LayoutUnit computedMaxLogicalWidth = convertStyleLogicalWidthToComputedWidth(styleMaxLogicalWidth, availableLogicalWidth); |
| setLogicalWidth(std::min(logicalWidth(), computedMaxLogicalWidth)); |
| } |
| |
| // Ensure we aren't smaller than our min-width style. |
| Length styleMinLogicalWidth = style().logicalMinWidth(); |
| if ((styleMinLogicalWidth.isSpecified() && !styleMinLogicalWidth.isNegative()) || styleMinLogicalWidth.isIntrinsic()) { |
| LayoutUnit computedMinLogicalWidth = convertStyleLogicalWidthToComputedWidth(styleMinLogicalWidth, availableLogicalWidth); |
| setLogicalWidth(std::max(logicalWidth(), computedMinLogicalWidth)); |
| } |
| |
| // Finally, with our true width determined, compute our margins for real. |
| setMarginStart(0); |
| setMarginEnd(0); |
| if (!hasPerpendicularContainingBlock) { |
| LayoutUnit containerLogicalWidthForAutoMargins = availableLogicalWidth; |
| if (avoidsFloats() && cb.containsFloats()) |
| containerLogicalWidthForAutoMargins = containingBlockAvailableLineWidthInFragment(0); // FIXME: Work with regions someday. |
| ComputedMarginValues marginValues; |
| bool hasInvertedDirection = cb.style().isLeftToRightDirection() == style().isLeftToRightDirection(); |
| computeInlineDirectionMargins(cb, containerLogicalWidthForAutoMargins, logicalWidth(), |
| hasInvertedDirection ? marginValues.m_start : marginValues.m_end, |
| hasInvertedDirection ? marginValues.m_end : marginValues.m_start); |
| setMarginStart(marginValues.m_start); |
| setMarginEnd(marginValues.m_end); |
| } else { |
| setMarginStart(minimumValueForLength(style().marginStart(), availableLogicalWidth)); |
| setMarginEnd(minimumValueForLength(style().marginEnd(), availableLogicalWidth)); |
| } |
| } |
| |
| // This method takes a RenderStyle's logical width, min-width, or max-width length and computes its actual value. |
| LayoutUnit RenderTable::convertStyleLogicalWidthToComputedWidth(const Length& styleLogicalWidth, LayoutUnit availableWidth) |
| { |
| if (styleLogicalWidth.isIntrinsic()) |
| return computeIntrinsicLogicalWidthUsing(styleLogicalWidth, availableWidth, bordersPaddingAndSpacingInRowDirection()); |
| |
| // HTML tables' width styles already include borders and paddings, but CSS tables' width styles do not. |
| LayoutUnit borders; |
| bool isCSSTable = !is<HTMLTableElement>(element()); |
| if (isCSSTable && styleLogicalWidth.isSpecified() && styleLogicalWidth.isPositive() && style().boxSizing() == BoxSizing::ContentBox) |
| borders = borderStart() + borderEnd() + (collapseBorders() ? 0_lu : paddingStart() + paddingEnd()); |
| |
| return minimumValueForLength(styleLogicalWidth, availableWidth) + borders; |
| } |
| |
| LayoutUnit RenderTable::convertStyleLogicalHeightToComputedHeight(const Length& styleLogicalHeight) |
| { |
| LayoutUnit borderAndPaddingBefore = borderBefore() + (collapseBorders() ? 0_lu : paddingBefore()); |
| LayoutUnit borderAndPaddingAfter = borderAfter() + (collapseBorders() ? 0_lu : paddingAfter()); |
| LayoutUnit borderAndPadding = borderAndPaddingBefore + borderAndPaddingAfter; |
| if (styleLogicalHeight.isFixed()) { |
| // HTML tables size as though CSS height includes border/padding, CSS tables do not. |
| LayoutUnit borders; |
| // FIXME: We cannot apply box-sizing: content-box on <table> which other browsers allow. |
| if (is<HTMLTableElement>(element()) || style().boxSizing() == BoxSizing::BorderBox) { |
| borders = borderAndPadding; |
| } |
| return LayoutUnit(styleLogicalHeight.value() - borders); |
| } else if (styleLogicalHeight.isPercentOrCalculated()) |
| return computePercentageLogicalHeight(styleLogicalHeight).valueOr(0); |
| else if (styleLogicalHeight.isIntrinsic()) |
| return computeIntrinsicLogicalContentHeightUsing(styleLogicalHeight, logicalHeight() - borderAndPadding, borderAndPadding).valueOr(0); |
| else |
| ASSERT_NOT_REACHED(); |
| return 0_lu; |
| } |
| |
| void RenderTable::layoutCaption(RenderTableCaption& caption) |
| { |
| LayoutRect captionRect(caption.frameRect()); |
| |
| if (caption.needsLayout()) { |
| // The margins may not be available but ensure the caption is at least located beneath any previous sibling caption |
| // so that it does not mistakenly think any floats in the previous caption intrude into it. |
| caption.setLogicalLocation(LayoutPoint(caption.marginStart(), caption.marginBefore() + logicalHeight())); |
| // If RenderTableCaption ever gets a layout() function, use it here. |
| caption.layoutIfNeeded(); |
| } |
| // Apply the margins to the location now that they are definitely available from layout |
| caption.setLogicalLocation(LayoutPoint(caption.marginStart(), caption.marginBefore() + logicalHeight())); |
| |
| if (!selfNeedsLayout() && caption.checkForRepaintDuringLayout()) |
| caption.repaintDuringLayoutIfMoved(captionRect); |
| |
| setLogicalHeight(logicalHeight() + caption.logicalHeight() + caption.marginBefore() + caption.marginAfter()); |
| } |
| |
| void RenderTable::layoutCaptions(BottomCaptionLayoutPhase bottomCaptionLayoutPhase) |
| { |
| if (m_captions.isEmpty()) |
| return; |
| // FIXME: Collapse caption margin. |
| for (unsigned i = 0; i < m_captions.size(); ++i) { |
| if ((bottomCaptionLayoutPhase == BottomCaptionLayoutPhase::Yes && m_captions[i]->style().captionSide() != CaptionSide::Bottom) |
| || (bottomCaptionLayoutPhase == BottomCaptionLayoutPhase::No && m_captions[i]->style().captionSide() == CaptionSide::Bottom)) |
| continue; |
| layoutCaption(*m_captions[i]); |
| } |
| } |
| |
| void RenderTable::distributeExtraLogicalHeight(LayoutUnit extraLogicalHeight) |
| { |
| if (extraLogicalHeight <= 0) |
| return; |
| |
| // FIXME: Distribute the extra logical height between all table sections instead of giving it all to the first one. |
| if (RenderTableSection* section = firstBody()) |
| extraLogicalHeight -= section->distributeExtraLogicalHeightToRows(extraLogicalHeight); |
| |
| // FIXME: We really would like to enable this ASSERT to ensure that all the extra space has been distributed. |
| // However our current distribution algorithm does not round properly and thus we can have some remaining height. |
| // ASSERT(!topSection() || !extraLogicalHeight); |
| } |
| |
| void RenderTable::simplifiedNormalFlowLayout() |
| { |
| layoutCaptions(); |
| for (RenderTableSection* section = topSection(); section; section = sectionBelow(section)) { |
| section->layoutIfNeeded(); |
| section->computeOverflowFromCells(); |
| } |
| layoutCaptions(BottomCaptionLayoutPhase::Yes); |
| } |
| |
| void RenderTable::layout() |
| { |
| StackStats::LayoutCheckPoint layoutCheckPoint; |
| ASSERT(needsLayout()); |
| |
| if (simplifiedLayout()) |
| return; |
| |
| recalcSectionsIfNeeded(); |
| // FIXME: We should do this recalc lazily in borderStart/borderEnd so that we don't have to make sure |
| // to call this before we call borderStart/borderEnd to avoid getting a stale value. |
| recalcBordersInRowDirection(); |
| bool sectionMoved = false; |
| LayoutUnit movedSectionLogicalTop; |
| |
| LayoutRepainter repainter(*this, checkForRepaintDuringLayout()); |
| { |
| LayoutStateMaintainer statePusher(*this, locationOffset(), hasTransform() || hasReflection() || style().isFlippedBlocksWritingMode()); |
| |
| LayoutUnit oldLogicalWidth = logicalWidth(); |
| LayoutUnit oldLogicalHeight = logicalHeight(); |
| resetLogicalHeightBeforeLayoutIfNeeded(); |
| updateLogicalWidth(); |
| |
| if (logicalWidth() != oldLogicalWidth) { |
| for (unsigned i = 0; i < m_captions.size(); i++) |
| m_captions[i]->setNeedsLayout(MarkOnlyThis); |
| } |
| // FIXME: The optimisation below doesn't work since the internal table |
| // layout could have changed. We need to add a flag to the table |
| // layout that tells us if something has changed in the min max |
| // calculations to do it correctly. |
| // if ( oldWidth != width() || columns.size() + 1 != columnPos.size() ) |
| m_tableLayout->layout(); |
| |
| LayoutUnit totalSectionLogicalHeight; |
| LayoutUnit oldTableLogicalTop; |
| for (unsigned i = 0; i < m_captions.size(); i++) { |
| if (m_captions[i]->style().captionSide() == CaptionSide::Bottom) |
| continue; |
| oldTableLogicalTop += m_captions[i]->logicalHeight() + m_captions[i]->marginBefore() + m_captions[i]->marginAfter(); |
| } |
| |
| bool collapsing = collapseBorders(); |
| |
| for (auto& child : childrenOfType<RenderElement>(*this)) { |
| if (is<RenderTableSection>(child)) { |
| RenderTableSection& section = downcast<RenderTableSection>(child); |
| if (m_columnLogicalWidthChanged) |
| section.setChildNeedsLayout(MarkOnlyThis); |
| section.layoutIfNeeded(); |
| totalSectionLogicalHeight += section.calcRowLogicalHeight(); |
| if (collapsing) |
| section.recalcOuterBorder(); |
| ASSERT(!section.needsLayout()); |
| } else if (is<RenderTableCol>(child)) { |
| downcast<RenderTableCol>(child).layoutIfNeeded(); |
| ASSERT(!child.needsLayout()); |
| } |
| } |
| |
| // If any table section moved vertically, we will just repaint everything from that |
| // section down (it is quite unlikely that any of the following sections |
| // did not shift). |
| layoutCaptions(); |
| if (!m_captions.isEmpty() && logicalHeight() != oldTableLogicalTop) { |
| sectionMoved = true; |
| movedSectionLogicalTop = std::min(logicalHeight(), oldTableLogicalTop); |
| } |
| |
| LayoutUnit borderAndPaddingBefore = borderBefore() + (collapsing ? 0_lu : paddingBefore()); |
| LayoutUnit borderAndPaddingAfter = borderAfter() + (collapsing ? 0_lu : paddingAfter()); |
| |
| setLogicalHeight(logicalHeight() + borderAndPaddingBefore); |
| |
| if (!isOutOfFlowPositioned()) |
| updateLogicalHeight(); |
| |
| LayoutUnit computedLogicalHeight; |
| |
| Length logicalHeightLength = style().logicalHeight(); |
| if (logicalHeightLength.isIntrinsic() || (logicalHeightLength.isSpecified() && logicalHeightLength.isPositive())) |
| computedLogicalHeight = convertStyleLogicalHeightToComputedHeight(logicalHeightLength); |
| |
| Length logicalMaxHeightLength = style().logicalMaxHeight(); |
| if (logicalMaxHeightLength.isIntrinsic() || (logicalMaxHeightLength.isSpecified() && !logicalMaxHeightLength.isNegative())) { |
| LayoutUnit computedMaxLogicalHeight = convertStyleLogicalHeightToComputedHeight(logicalMaxHeightLength); |
| computedLogicalHeight = std::min(computedLogicalHeight, computedMaxLogicalHeight); |
| } |
| |
| Length logicalMinHeightLength = style().logicalMinHeight(); |
| if (logicalMinHeightLength.isIntrinsic() || (logicalMinHeightLength.isSpecified() && !logicalMinHeightLength.isNegative())) { |
| LayoutUnit computedMinLogicalHeight = convertStyleLogicalHeightToComputedHeight(logicalMinHeightLength); |
| computedLogicalHeight = std::max(computedLogicalHeight, computedMinLogicalHeight); |
| } |
| |
| distributeExtraLogicalHeight(computedLogicalHeight - totalSectionLogicalHeight); |
| |
| for (RenderTableSection* section = topSection(); section; section = sectionBelow(section)) |
| section->layoutRows(); |
| |
| if (!topSection() && computedLogicalHeight > totalSectionLogicalHeight && !document().inQuirksMode()) { |
| // Completely empty tables (with no sections or anything) should at least honor specified height |
| // in strict mode. |
| setLogicalHeight(logicalHeight() + computedLogicalHeight); |
| } |
| |
| LayoutUnit sectionLogicalLeft = style().isLeftToRightDirection() ? borderStart() : borderEnd(); |
| if (!collapsing) |
| sectionLogicalLeft += style().isLeftToRightDirection() ? paddingStart() : paddingEnd(); |
| |
| // position the table sections |
| RenderTableSection* section = topSection(); |
| while (section) { |
| if (!sectionMoved && section->logicalTop() != logicalHeight()) { |
| sectionMoved = true; |
| movedSectionLogicalTop = std::min(logicalHeight(), section->logicalTop()) + (style().isHorizontalWritingMode() ? section->visualOverflowRect().y() : section->visualOverflowRect().x()); |
| } |
| section->setLogicalLocation(LayoutPoint(sectionLogicalLeft, logicalHeight())); |
| |
| setLogicalHeight(logicalHeight() + section->logicalHeight()); |
| section = sectionBelow(section); |
| } |
| |
| setLogicalHeight(logicalHeight() + borderAndPaddingAfter); |
| |
| layoutCaptions(BottomCaptionLayoutPhase::Yes); |
| |
| if (isOutOfFlowPositioned()) |
| updateLogicalHeight(); |
| |
| // table can be containing block of positioned elements. |
| bool dimensionChanged = oldLogicalWidth != logicalWidth() || oldLogicalHeight != logicalHeight(); |
| layoutPositionedObjects(dimensionChanged); |
| |
| updateLayerTransform(); |
| |
| // Layout was changed, so probably borders too. |
| invalidateCollapsedBorders(); |
| |
| // The location or height of one or more sections may have changed. |
| invalidateCachedColumnOffsets(); |
| |
| computeOverflow(clientLogicalBottom()); |
| } |
| |
| auto* layoutState = view().frameView().layoutContext().layoutState(); |
| if (layoutState && layoutState->pageLogicalHeight()) |
| setPageLogicalOffset(layoutState->pageLogicalOffset(this, logicalTop())); |
| |
| bool didFullRepaint = repainter.repaintAfterLayout(); |
| // Repaint with our new bounds if they are different from our old bounds. |
| if (!didFullRepaint && sectionMoved) { |
| if (style().isHorizontalWritingMode()) |
| repaintRectangle(LayoutRect(visualOverflowRect().x(), movedSectionLogicalTop, visualOverflowRect().width(), visualOverflowRect().maxY() - movedSectionLogicalTop)); |
| else |
| repaintRectangle(LayoutRect(movedSectionLogicalTop, visualOverflowRect().y(), visualOverflowRect().maxX() - movedSectionLogicalTop, visualOverflowRect().height())); |
| } |
| |
| bool paginated = layoutState && layoutState->isPaginated(); |
| if (sectionMoved && paginated) { |
| // FIXME: Table layout should always stabilize even when section moves (see webkit.org/b/174412). |
| if (!m_inRecursiveSectionMovedWithPagination) { |
| SetForScope<bool> paginatedSectionMoved(m_inRecursiveSectionMovedWithPagination, true); |
| markForPaginationRelayoutIfNeeded(); |
| layoutIfNeeded(); |
| } else |
| ASSERT_NOT_REACHED(); |
| } |
| |
| // 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()); |
| |
| m_columnLogicalWidthChanged = false; |
| clearNeedsLayout(); |
| } |
| |
| void RenderTable::invalidateCollapsedBorders(RenderTableCell* cellWithStyleChange) |
| { |
| m_collapsedBordersValid = false; |
| m_collapsedBorders.clear(); |
| |
| for (auto& section : childrenOfType<RenderTableSection>(*this)) |
| section.clearCachedCollapsedBorders(); |
| |
| if (!m_collapsedEmptyBorderIsPresent) |
| return; |
| |
| if (cellWithStyleChange) { |
| // It is enough to invalidate just the surrounding cells when cell border style changes. |
| cellWithStyleChange->invalidateHasEmptyCollapsedBorders(); |
| if (auto* below = cellBelow(cellWithStyleChange)) |
| below->invalidateHasEmptyCollapsedBorders(); |
| if (auto* above = cellAbove(cellWithStyleChange)) |
| above->invalidateHasEmptyCollapsedBorders(); |
| if (auto* before = cellBefore(cellWithStyleChange)) |
| before->invalidateHasEmptyCollapsedBorders(); |
| if (auto* after = cellAfter(cellWithStyleChange)) |
| after->invalidateHasEmptyCollapsedBorders(); |
| return; |
| } |
| |
| for (auto& section : childrenOfType<RenderTableSection>(*this)) { |
| for (auto* row = section.firstRow(); row; row = row->nextRow()) { |
| for (auto* cell = row->firstCell(); cell; cell = cell->nextCell()) { |
| ASSERT(cell->table() == this); |
| cell->invalidateHasEmptyCollapsedBorders(); |
| } |
| } |
| } |
| m_collapsedEmptyBorderIsPresent = false; |
| } |
| |
| // Collect all the unique border values that we want to paint in a sorted list. |
| void RenderTable::recalcCollapsedBorders() |
| { |
| if (m_collapsedBordersValid) |
| return; |
| m_collapsedBorders.clear(); |
| for (auto& section : childrenOfType<RenderTableSection>(*this)) { |
| for (RenderTableRow* row = section.firstRow(); row; row = row->nextRow()) { |
| for (RenderTableCell* cell = row->firstCell(); cell; cell = cell->nextCell()) { |
| ASSERT(cell->table() == this); |
| cell->collectBorderValues(m_collapsedBorders); |
| } |
| } |
| } |
| RenderTableCell::sortBorderValues(m_collapsedBorders); |
| m_collapsedBordersValid = true; |
| } |
| |
| void RenderTable::addOverflowFromChildren() |
| { |
| // Add overflow from borders. |
| // Technically it's odd that we are incorporating the borders into layout overflow, which is only supposed to be about overflow from our |
| // descendant objects, but since tables don't support overflow:auto, this works out fine. |
| if (collapseBorders()) { |
| LayoutUnit rightBorderOverflow = width() + outerBorderRight() - borderRight(); |
| LayoutUnit leftBorderOverflow = borderLeft() - outerBorderLeft(); |
| LayoutUnit bottomBorderOverflow = height() + outerBorderBottom() - borderBottom(); |
| LayoutUnit topBorderOverflow = borderTop() - outerBorderTop(); |
| LayoutRect borderOverflowRect(leftBorderOverflow, topBorderOverflow, rightBorderOverflow - leftBorderOverflow, bottomBorderOverflow - topBorderOverflow); |
| if (borderOverflowRect != borderBoxRect()) { |
| addLayoutOverflow(borderOverflowRect); |
| addVisualOverflow(borderOverflowRect); |
| } |
| } |
| |
| // Add overflow from our caption. |
| for (unsigned i = 0; i < m_captions.size(); i++) |
| addOverflowFromChild(m_captions[i].get()); |
| |
| // Add overflow from our sections. |
| for (RenderTableSection* section = topSection(); section; section = sectionBelow(section)) |
| addOverflowFromChild(section); |
| } |
| |
| void RenderTable::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
| { |
| LayoutPoint adjustedPaintOffset = paintOffset + location(); |
| |
| PaintPhase paintPhase = paintInfo.phase; |
| |
| if (!isDocumentElementRenderer()) { |
| LayoutRect overflowBox = visualOverflowRect(); |
| flipForWritingMode(overflowBox); |
| overflowBox.moveBy(adjustedPaintOffset); |
| if (!overflowBox.intersects(paintInfo.rect)) |
| return; |
| } |
| |
| bool pushedClip = pushContentsClip(paintInfo, adjustedPaintOffset); |
| paintObject(paintInfo, adjustedPaintOffset); |
| if (pushedClip) |
| popContentsClip(paintInfo, paintPhase, adjustedPaintOffset); |
| } |
| |
| void RenderTable::paintObject(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
| { |
| PaintPhase paintPhase = paintInfo.phase; |
| if ((paintPhase == PaintPhase::BlockBackground || paintPhase == PaintPhase::ChildBlockBackground) && hasVisibleBoxDecorations() && style().visibility() == Visibility::Visible) |
| paintBoxDecorations(paintInfo, paintOffset); |
| |
| if (paintPhase == PaintPhase::Mask) { |
| paintMask(paintInfo, paintOffset); |
| return; |
| } |
| |
| // We're done. We don't bother painting any children. |
| if (paintPhase == PaintPhase::BlockBackground) |
| return; |
| |
| // We don't paint our own background, but we do let the kids paint their backgrounds. |
| if (paintPhase == PaintPhase::ChildBlockBackgrounds) |
| paintPhase = PaintPhase::ChildBlockBackground; |
| |
| PaintInfo info(paintInfo); |
| info.phase = paintPhase; |
| info.updateSubtreePaintRootForChildren(this); |
| |
| for (auto& box : childrenOfType<RenderBox>(*this)) { |
| if (!box.hasSelfPaintingLayer() && (box.isTableSection() || box.isTableCaption())) { |
| LayoutPoint childPoint = flipForWritingModeForChild(&box, paintOffset); |
| box.paint(info, childPoint); |
| } |
| } |
| |
| if (collapseBorders() && paintPhase == PaintPhase::ChildBlockBackground && style().visibility() == Visibility::Visible) { |
| recalcCollapsedBorders(); |
| // Using our cached sorted styles, we then do individual passes, |
| // painting each style of border from lowest precedence to highest precedence. |
| info.phase = PaintPhase::CollapsedTableBorders; |
| size_t count = m_collapsedBorders.size(); |
| for (size_t i = 0; i < count; ++i) { |
| m_currentBorder = &m_collapsedBorders[i]; |
| for (RenderTableSection* section = bottomSection(); section; section = sectionAbove(section)) { |
| LayoutPoint childPoint = flipForWritingModeForChild(section, paintOffset); |
| section->paint(info, childPoint); |
| } |
| } |
| m_currentBorder = 0; |
| } |
| |
| // Paint outline. |
| if ((paintPhase == PaintPhase::Outline || paintPhase == PaintPhase::SelfOutline) && hasOutline() && style().visibility() == Visibility::Visible) |
| paintOutline(paintInfo, LayoutRect(paintOffset, size())); |
| } |
| |
| void RenderTable::adjustBorderBoxRectForPainting(LayoutRect& rect) |
| { |
| for (unsigned i = 0; i < m_captions.size(); i++) { |
| LayoutUnit captionLogicalHeight = m_captions[i]->logicalHeight() + m_captions[i]->marginBefore() + m_captions[i]->marginAfter(); |
| bool captionIsBefore = (m_captions[i]->style().captionSide() != CaptionSide::Bottom) ^ style().isFlippedBlocksWritingMode(); |
| if (style().isHorizontalWritingMode()) { |
| rect.setHeight(rect.height() - captionLogicalHeight); |
| if (captionIsBefore) |
| rect.move(0_lu, captionLogicalHeight); |
| } else { |
| rect.setWidth(rect.width() - captionLogicalHeight); |
| if (captionIsBefore) |
| rect.move(captionLogicalHeight, 0_lu); |
| } |
| } |
| |
| RenderBlock::adjustBorderBoxRectForPainting(rect); |
| } |
| |
| void RenderTable::paintBoxDecorations(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
| { |
| if (!paintInfo.shouldPaintWithinRoot(*this)) |
| return; |
| |
| LayoutRect rect(paintOffset, size()); |
| adjustBorderBoxRectForPainting(rect); |
| |
| BackgroundBleedAvoidance bleedAvoidance = determineBackgroundBleedAvoidance(paintInfo.context()); |
| if (!boxShadowShouldBeAppliedToBackground(rect.location(), bleedAvoidance)) |
| paintBoxShadow(paintInfo, rect, style(), ShadowStyle::Normal); |
| paintBackground(paintInfo, rect, bleedAvoidance); |
| paintBoxShadow(paintInfo, rect, style(), ShadowStyle::Inset); |
| |
| if (style().hasVisibleBorderDecoration() && !collapseBorders()) |
| paintBorder(paintInfo, rect, style()); |
| } |
| |
| void RenderTable::paintMask(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
| { |
| if (style().visibility() != Visibility::Visible || paintInfo.phase != PaintPhase::Mask) |
| return; |
| |
| LayoutRect rect(paintOffset, size()); |
| adjustBorderBoxRectForPainting(rect); |
| |
| paintMaskImages(paintInfo, rect); |
| } |
| |
| void RenderTable::computeIntrinsicLogicalWidths(LayoutUnit& minWidth, LayoutUnit& maxWidth) const |
| { |
| recalcSectionsIfNeeded(); |
| // FIXME: Do the recalc in borderStart/borderEnd and make those const_cast this call. |
| // Then m_borderStart/m_borderEnd will be transparent a cache and it removes the possibility |
| // of reading out stale values. |
| const_cast<RenderTable*>(this)->recalcBordersInRowDirection(); |
| // FIXME: Restructure the table layout code so that we can make this method const. |
| const_cast<RenderTable*>(this)->m_tableLayout->computeIntrinsicLogicalWidths(minWidth, maxWidth); |
| |
| // FIXME: We should include captions widths here like we do in computePreferredLogicalWidths. |
| } |
| |
| void RenderTable::computePreferredLogicalWidths() |
| { |
| ASSERT(preferredLogicalWidthsDirty()); |
| |
| computeIntrinsicLogicalWidths(m_minPreferredLogicalWidth, m_maxPreferredLogicalWidth); |
| |
| LayoutUnit bordersPaddingAndSpacing = bordersPaddingAndSpacingInRowDirection(); |
| m_minPreferredLogicalWidth += bordersPaddingAndSpacing; |
| m_maxPreferredLogicalWidth += bordersPaddingAndSpacing; |
| |
| m_tableLayout->applyPreferredLogicalWidthQuirks(m_minPreferredLogicalWidth, m_maxPreferredLogicalWidth); |
| |
| for (unsigned i = 0; i < m_captions.size(); i++) |
| m_minPreferredLogicalWidth = std::max(m_minPreferredLogicalWidth, m_captions[i]->minPreferredLogicalWidth()); |
| |
| auto& styleToUse = style(); |
| // FIXME: This should probably be checking for isSpecified since you should be able to use percentage or calc values for min-width. |
| if (styleToUse.logicalMinWidth().isFixed() && styleToUse.logicalMinWidth().value() > 0) { |
| m_maxPreferredLogicalWidth = std::max(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(styleToUse.logicalMinWidth().value())); |
| m_minPreferredLogicalWidth = std::max(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(styleToUse.logicalMinWidth().value())); |
| } |
| |
| // FIXME: This should probably be checking for isSpecified since you should be able to use percentage or calc values for maxWidth. |
| if (styleToUse.logicalMaxWidth().isFixed()) { |
| m_maxPreferredLogicalWidth = std::min(m_maxPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(styleToUse.logicalMaxWidth().value())); |
| m_minPreferredLogicalWidth = std::min(m_minPreferredLogicalWidth, adjustContentBoxLogicalWidthForBoxSizing(styleToUse.logicalMaxWidth().value())); |
| } |
| |
| // FIXME: We should be adding borderAndPaddingLogicalWidth here, but m_tableLayout->computePreferredLogicalWidths already does, |
| // so a bunch of tests break doing this naively. |
| setPreferredLogicalWidthsDirty(false); |
| } |
| |
| RenderTableSection* RenderTable::topNonEmptySection() const |
| { |
| RenderTableSection* section = topSection(); |
| if (section && !section->numRows()) |
| section = sectionBelow(section, SkipEmptySections); |
| return section; |
| } |
| |
| void RenderTable::splitColumn(unsigned position, unsigned firstSpan) |
| { |
| // We split the column at "position", taking "firstSpan" cells from the span. |
| ASSERT(m_columns[position].span > firstSpan); |
| m_columns.insert(position, ColumnStruct(firstSpan)); |
| m_columns[position + 1].span -= firstSpan; |
| |
| // Propagate the change in our columns representation to the sections that don't need |
| // cell recalc. If they do, they will be synced up directly with m_columns later. |
| for (auto& section : childrenOfType<RenderTableSection>(*this)) { |
| if (section.needsCellRecalc()) |
| continue; |
| |
| section.splitColumn(position, firstSpan); |
| } |
| |
| m_columnPos.grow(numEffCols() + 1); |
| } |
| |
| void RenderTable::appendColumn(unsigned span) |
| { |
| unsigned newColumnIndex = m_columns.size(); |
| m_columns.append(ColumnStruct(span)); |
| |
| // Unless the table has cell(s) with colspan that exceed the number of columns afforded |
| // by the other rows in the table we can use the fast path when mapping columns to effective columns. |
| m_hasCellColspanThatDeterminesTableWidth = m_hasCellColspanThatDeterminesTableWidth || span > 1; |
| |
| // Propagate the change in our columns representation to the sections that don't need |
| // cell recalc. If they do, they will be synced up directly with m_columns later. |
| for (auto& section : childrenOfType<RenderTableSection>(*this)) { |
| if (section.needsCellRecalc()) |
| continue; |
| |
| section.appendColumn(newColumnIndex); |
| } |
| |
| m_columnPos.grow(numEffCols() + 1); |
| } |
| |
| RenderTableCol* RenderTable::firstColumn() const |
| { |
| for (auto& child : childrenOfType<RenderObject>(*this)) { |
| if (is<RenderTableCol>(child)) |
| return &const_cast<RenderTableCol&>(downcast<RenderTableCol>(child)); |
| |
| // We allow only table-captions before columns or column-groups. |
| if (!is<RenderTableCaption>(child)) |
| return nullptr; |
| } |
| |
| return nullptr; |
| } |
| |
| void RenderTable::updateColumnCache() const |
| { |
| ASSERT(m_hasColElements); |
| ASSERT(m_columnRenderers.isEmpty()); |
| ASSERT(m_effectiveColumnIndexMap.isEmpty()); |
| ASSERT(!m_columnRenderersValid); |
| |
| unsigned columnIndex = 0; |
| for (RenderTableCol* columnRenderer = firstColumn(); columnRenderer; columnRenderer = columnRenderer->nextColumn()) { |
| if (columnRenderer->isTableColumnGroupWithColumnChildren()) |
| continue; |
| m_columnRenderers.append(makeWeakPtr(columnRenderer)); |
| // FIXME: We should look to compute the effective column index successively from previous values instead of |
| // calling colToEffCol(), which is in O(numEffCols()). Although it's unlikely that this is a hot function. |
| m_effectiveColumnIndexMap.add(columnRenderer, colToEffCol(columnIndex)); |
| columnIndex += columnRenderer->span(); |
| } |
| m_columnRenderersValid = true; |
| } |
| |
| unsigned RenderTable::effectiveIndexOfColumn(const RenderTableCol& column) const |
| { |
| if (!m_columnRenderersValid) |
| updateColumnCache(); |
| const RenderTableCol* columnToUse = &column; |
| if (columnToUse->isTableColumnGroupWithColumnChildren()) |
| columnToUse = columnToUse->nextColumn(); // First column in column-group |
| auto it = m_effectiveColumnIndexMap.find(columnToUse); |
| ASSERT(it != m_effectiveColumnIndexMap.end()); |
| if (it == m_effectiveColumnIndexMap.end()) |
| return std::numeric_limits<unsigned>::max(); |
| return it->value; |
| } |
| |
| LayoutUnit RenderTable::offsetTopForColumn(const RenderTableCol& column) const |
| { |
| if (effectiveIndexOfColumn(column) >= numEffCols()) |
| return 0; |
| if (m_columnOffsetTop >= 0) { |
| ASSERT(!needsLayout()); |
| return m_columnOffsetTop; |
| } |
| RenderTableSection* section = topNonEmptySection(); |
| return m_columnOffsetTop = section ? section->offsetTop() : 0_lu; |
| } |
| |
| LayoutUnit RenderTable::offsetLeftForColumn(const RenderTableCol& column) const |
| { |
| unsigned columnIndex = effectiveIndexOfColumn(column); |
| if (columnIndex >= numEffCols()) |
| return 0; |
| return m_columnPos[columnIndex] + m_hSpacing + borderLeft(); |
| } |
| |
| LayoutUnit RenderTable::offsetWidthForColumn(const RenderTableCol& column) const |
| { |
| const RenderTableCol* currentColumn = &column; |
| bool hasColumnChildren; |
| if ((hasColumnChildren = currentColumn->isTableColumnGroupWithColumnChildren())) |
| currentColumn = currentColumn->nextColumn(); // First column in column-group |
| unsigned numberOfEffectiveColumns = numEffCols(); |
| ASSERT_WITH_SECURITY_IMPLICATION(m_columnPos.size() >= numberOfEffectiveColumns + 1); |
| LayoutUnit width; |
| LayoutUnit spacing = m_hSpacing; |
| while (currentColumn) { |
| unsigned columnIndex = effectiveIndexOfColumn(*currentColumn); |
| unsigned span = currentColumn->span(); |
| while (span && columnIndex < numberOfEffectiveColumns) { |
| width += m_columnPos[columnIndex + 1] - m_columnPos[columnIndex] - spacing; |
| span -= m_columns[columnIndex].span; |
| ++columnIndex; |
| if (span) |
| width += spacing; |
| } |
| if (!hasColumnChildren) |
| break; |
| currentColumn = currentColumn->nextColumn(); |
| if (!currentColumn || currentColumn->isTableColumnGroup()) |
| break; |
| width += spacing; |
| } |
| return width; |
| } |
| |
| LayoutUnit RenderTable::offsetHeightForColumn(const RenderTableCol& column) const |
| { |
| if (effectiveIndexOfColumn(column) >= numEffCols()) |
| return 0; |
| if (m_columnOffsetHeight >= 0) { |
| ASSERT(!needsLayout()); |
| return m_columnOffsetHeight; |
| } |
| LayoutUnit height; |
| for (RenderTableSection* section = topSection(); section; section = sectionBelow(section)) |
| height += section->offsetHeight(); |
| m_columnOffsetHeight = height; |
| return m_columnOffsetHeight; |
| } |
| |
| RenderTableCol* RenderTable::slowColElement(unsigned col, bool* startEdge, bool* endEdge) const |
| { |
| ASSERT(m_hasColElements); |
| |
| if (!m_columnRenderersValid) |
| updateColumnCache(); |
| |
| unsigned columnCount = 0; |
| for (auto& columnRenderer : m_columnRenderers) { |
| if (!columnRenderer) |
| continue; |
| unsigned span = columnRenderer->span(); |
| unsigned startCol = columnCount; |
| ASSERT(span >= 1); |
| unsigned endCol = columnCount + span - 1; |
| columnCount += span; |
| if (columnCount > col) { |
| if (startEdge) |
| *startEdge = startCol == col; |
| if (endEdge) |
| *endEdge = endCol == col; |
| return columnRenderer.get(); |
| } |
| } |
| return nullptr; |
| } |
| |
| void RenderTable::recalcSections() const |
| { |
| ASSERT(m_needsSectionRecalc); |
| |
| m_head.clear(); |
| m_foot.clear(); |
| m_firstBody.clear(); |
| m_hasColElements = false; |
| m_hasCellColspanThatDeterminesTableWidth = hasCellColspanThatDeterminesTableWidth(); |
| |
| // We need to get valid pointers to caption, head, foot and first body again |
| RenderObject* nextSibling; |
| for (RenderObject* child = firstChild(); child; child = nextSibling) { |
| nextSibling = child->nextSibling(); |
| switch (child->style().display()) { |
| case DisplayType::TableColumn: |
| case DisplayType::TableColumnGroup: |
| m_hasColElements = true; |
| break; |
| case DisplayType::TableHeaderGroup: |
| if (is<RenderTableSection>(*child)) { |
| RenderTableSection& section = downcast<RenderTableSection>(*child); |
| if (!m_head) |
| m_head = makeWeakPtr(section); |
| else if (!m_firstBody) |
| m_firstBody = makeWeakPtr(section); |
| section.recalcCellsIfNeeded(); |
| } |
| break; |
| case DisplayType::TableFooterGroup: |
| if (is<RenderTableSection>(*child)) { |
| RenderTableSection& section = downcast<RenderTableSection>(*child); |
| if (!m_foot) |
| m_foot = makeWeakPtr(section); |
| else if (!m_firstBody) |
| m_firstBody = makeWeakPtr(section); |
| section.recalcCellsIfNeeded(); |
| } |
| break; |
| case DisplayType::TableRowGroup: |
| if (is<RenderTableSection>(*child)) { |
| RenderTableSection& section = downcast<RenderTableSection>(*child); |
| if (!m_firstBody) |
| m_firstBody = makeWeakPtr(section); |
| section.recalcCellsIfNeeded(); |
| } |
| break; |
| default: |
| break; |
| } |
| } |
| |
| // repair column count (addChild can grow it too much, because it always adds elements to the last row of a section) |
| unsigned maxCols = 0; |
| for (auto& section : childrenOfType<RenderTableSection>(*this)) { |
| unsigned sectionCols = section.numColumns(); |
| if (sectionCols > maxCols) |
| maxCols = sectionCols; |
| } |
| |
| m_columns.resize(maxCols); |
| m_columnPos.resize(maxCols + 1); |
| |
| // Now that we know the number of maximum number of columns, let's shrink the sections grids if needed. |
| for (auto& section : childrenOfType<RenderTableSection>(const_cast<RenderTable&>(*this))) |
| section.removeRedundantColumns(); |
| |
| ASSERT(selfNeedsLayout()); |
| |
| m_needsSectionRecalc = false; |
| } |
| |
| LayoutUnit RenderTable::calcBorderStart() const |
| { |
| if (!collapseBorders()) |
| return RenderBlock::borderStart(); |
| |
| // Determined by the first cell of the first row. See the CSS 2.1 spec, section 17.6.2. |
| if (!numEffCols()) |
| return 0; |
| |
| float borderWidth = 0; |
| |
| const BorderValue& tableStartBorder = style().borderStart(); |
| if (tableStartBorder.style() == BorderStyle::Hidden) |
| return 0; |
| if (tableStartBorder.style() > BorderStyle::Hidden) |
| borderWidth = tableStartBorder.width(); |
| |
| if (RenderTableCol* column = colElement(0)) { |
| // FIXME: We don't account for direction on columns and column groups. |
| const BorderValue& columnAdjoiningBorder = column->style().borderStart(); |
| if (columnAdjoiningBorder.style() == BorderStyle::Hidden) |
| return 0; |
| if (columnAdjoiningBorder.style() > BorderStyle::Hidden) |
| borderWidth = std::max(borderWidth, columnAdjoiningBorder.width()); |
| // FIXME: This logic doesn't properly account for the first column in the first column-group case. |
| } |
| |
| if (const RenderTableSection* topNonEmptySection = this->topNonEmptySection()) { |
| const BorderValue& sectionAdjoiningBorder = topNonEmptySection->borderAdjoiningTableStart(); |
| if (sectionAdjoiningBorder.style() == BorderStyle::Hidden) |
| return 0; |
| |
| if (sectionAdjoiningBorder.style() > BorderStyle::Hidden) |
| borderWidth = std::max(borderWidth, sectionAdjoiningBorder.width()); |
| |
| if (const RenderTableCell* adjoiningStartCell = topNonEmptySection->firstRowCellAdjoiningTableStart()) { |
| // FIXME: Make this work with perpendicular and flipped cells. |
| const BorderValue& startCellAdjoiningBorder = adjoiningStartCell->borderAdjoiningTableStart(); |
| if (startCellAdjoiningBorder.style() == BorderStyle::Hidden) |
| return 0; |
| |
| const BorderValue& firstRowAdjoiningBorder = adjoiningStartCell->row()->borderAdjoiningTableStart(); |
| if (firstRowAdjoiningBorder.style() == BorderStyle::Hidden) |
| return 0; |
| |
| if (startCellAdjoiningBorder.style() > BorderStyle::Hidden) |
| borderWidth = std::max(borderWidth, startCellAdjoiningBorder.width()); |
| if (firstRowAdjoiningBorder.style() > BorderStyle::Hidden) |
| borderWidth = std::max(borderWidth, firstRowAdjoiningBorder.width()); |
| } |
| } |
| return CollapsedBorderValue::adjustedCollapsedBorderWidth(borderWidth, document().deviceScaleFactor(), !style().isLeftToRightDirection()); |
| } |
| |
| LayoutUnit RenderTable::calcBorderEnd() const |
| { |
| if (!collapseBorders()) |
| return RenderBlock::borderEnd(); |
| |
| // Determined by the last cell of the first row. See the CSS 2.1 spec, section 17.6.2. |
| if (!numEffCols()) |
| return 0; |
| |
| float borderWidth = 0; |
| |
| const BorderValue& tableEndBorder = style().borderEnd(); |
| if (tableEndBorder.style() == BorderStyle::Hidden) |
| return 0; |
| if (tableEndBorder.style() > BorderStyle::Hidden) |
| borderWidth = tableEndBorder.width(); |
| |
| unsigned endColumn = numEffCols() - 1; |
| if (RenderTableCol* column = colElement(endColumn)) { |
| // FIXME: We don't account for direction on columns and column groups. |
| const BorderValue& columnAdjoiningBorder = column->style().borderEnd(); |
| if (columnAdjoiningBorder.style() == BorderStyle::Hidden) |
| return 0; |
| if (columnAdjoiningBorder.style() > BorderStyle::Hidden) |
| borderWidth = std::max(borderWidth, columnAdjoiningBorder.width()); |
| // FIXME: This logic doesn't properly account for the last column in the last column-group case. |
| } |
| |
| if (const RenderTableSection* topNonEmptySection = this->topNonEmptySection()) { |
| const BorderValue& sectionAdjoiningBorder = topNonEmptySection->borderAdjoiningTableEnd(); |
| if (sectionAdjoiningBorder.style() == BorderStyle::Hidden) |
| return 0; |
| |
| if (sectionAdjoiningBorder.style() > BorderStyle::Hidden) |
| borderWidth = std::max(borderWidth, sectionAdjoiningBorder.width()); |
| |
| if (const RenderTableCell* adjoiningEndCell = topNonEmptySection->firstRowCellAdjoiningTableEnd()) { |
| // FIXME: Make this work with perpendicular and flipped cells. |
| const BorderValue& endCellAdjoiningBorder = adjoiningEndCell->borderAdjoiningTableEnd(); |
| if (endCellAdjoiningBorder.style() == BorderStyle::Hidden) |
| return 0; |
| |
| const BorderValue& firstRowAdjoiningBorder = adjoiningEndCell->row()->borderAdjoiningTableEnd(); |
| if (firstRowAdjoiningBorder.style() == BorderStyle::Hidden) |
| return 0; |
| |
| if (endCellAdjoiningBorder.style() > BorderStyle::Hidden) |
| borderWidth = std::max(borderWidth, endCellAdjoiningBorder.width()); |
| if (firstRowAdjoiningBorder.style() > BorderStyle::Hidden) |
| borderWidth = std::max(borderWidth, firstRowAdjoiningBorder.width()); |
| } |
| } |
| return CollapsedBorderValue::adjustedCollapsedBorderWidth(borderWidth, document().deviceScaleFactor(), style().isLeftToRightDirection()); |
| } |
| |
| void RenderTable::recalcBordersInRowDirection() |
| { |
| // FIXME: We need to compute the collapsed before / after borders in the same fashion. |
| m_borderStart = calcBorderStart(); |
| m_borderEnd = calcBorderEnd(); |
| } |
| |
| LayoutUnit RenderTable::borderBefore() const |
| { |
| if (collapseBorders()) { |
| recalcSectionsIfNeeded(); |
| return outerBorderBefore(); |
| } |
| return RenderBlock::borderBefore(); |
| } |
| |
| LayoutUnit RenderTable::borderAfter() const |
| { |
| if (collapseBorders()) { |
| recalcSectionsIfNeeded(); |
| return outerBorderAfter(); |
| } |
| return RenderBlock::borderAfter(); |
| } |
| |
| LayoutUnit RenderTable::outerBorderBefore() const |
| { |
| if (!collapseBorders()) |
| return 0; |
| LayoutUnit borderWidth; |
| if (RenderTableSection* topSection = this->topSection()) { |
| borderWidth = topSection->outerBorderBefore(); |
| if (borderWidth < 0) |
| return 0; // Overridden by hidden |
| } |
| const BorderValue& tb = style().borderBefore(); |
| if (tb.style() == BorderStyle::Hidden) |
| return 0; |
| if (tb.style() > BorderStyle::Hidden) { |
| LayoutUnit collapsedBorderWidth = std::max(borderWidth, LayoutUnit(tb.width() / 2)); |
| borderWidth = floorToDevicePixel(collapsedBorderWidth, document().deviceScaleFactor()); |
| } |
| return borderWidth; |
| } |
| |
| LayoutUnit RenderTable::outerBorderAfter() const |
| { |
| if (!collapseBorders()) |
| return 0; |
| LayoutUnit borderWidth; |
| |
| if (RenderTableSection* section = bottomSection()) { |
| borderWidth = section->outerBorderAfter(); |
| if (borderWidth < 0) |
| return 0; // Overridden by hidden |
| } |
| const BorderValue& tb = style().borderAfter(); |
| if (tb.style() == BorderStyle::Hidden) |
| return 0; |
| if (tb.style() > BorderStyle::Hidden) { |
| float deviceScaleFactor = document().deviceScaleFactor(); |
| LayoutUnit collapsedBorderWidth = std::max(borderWidth, LayoutUnit((tb.width() + (1 / deviceScaleFactor)) / 2)); |
| borderWidth = floorToDevicePixel(collapsedBorderWidth, deviceScaleFactor); |
| } |
| return borderWidth; |
| } |
| |
| LayoutUnit RenderTable::outerBorderStart() const |
| { |
| if (!collapseBorders()) |
| return 0; |
| |
| LayoutUnit borderWidth; |
| |
| const BorderValue& tb = style().borderStart(); |
| if (tb.style() == BorderStyle::Hidden) |
| return 0; |
| if (tb.style() > BorderStyle::Hidden) |
| return CollapsedBorderValue::adjustedCollapsedBorderWidth(tb.width(), document().deviceScaleFactor(), !style().isLeftToRightDirection()); |
| |
| bool allHidden = true; |
| for (RenderTableSection* section = topSection(); section; section = sectionBelow(section)) { |
| LayoutUnit sw = section->outerBorderStart(); |
| if (sw < 0) |
| continue; |
| allHidden = false; |
| borderWidth = std::max(borderWidth, sw); |
| } |
| if (allHidden) |
| return 0; |
| |
| return borderWidth; |
| } |
| |
| LayoutUnit RenderTable::outerBorderEnd() const |
| { |
| if (!collapseBorders()) |
| return 0; |
| |
| LayoutUnit borderWidth; |
| |
| const BorderValue& tb = style().borderEnd(); |
| if (tb.style() == BorderStyle::Hidden) |
| return 0; |
| if (tb.style() > BorderStyle::Hidden) |
| return CollapsedBorderValue::adjustedCollapsedBorderWidth(tb.width(), document().deviceScaleFactor(), style().isLeftToRightDirection()); |
| |
| bool allHidden = true; |
| for (RenderTableSection* section = topSection(); section; section = sectionBelow(section)) { |
| LayoutUnit sw = section->outerBorderEnd(); |
| if (sw < 0) |
| continue; |
| allHidden = false; |
| borderWidth = std::max(borderWidth, sw); |
| } |
| if (allHidden) |
| return 0; |
| |
| return borderWidth; |
| } |
| |
| RenderTableSection* RenderTable::sectionAbove(const RenderTableSection* section, SkipEmptySectionsValue skipEmptySections) const |
| { |
| recalcSectionsIfNeeded(); |
| |
| if (section == m_head) |
| return nullptr; |
| |
| RenderObject* prevSection = section == m_foot ? lastChild() : section->previousSibling(); |
| while (prevSection) { |
| if (is<RenderTableSection>(*prevSection) && prevSection != m_head && prevSection != m_foot && (skipEmptySections == DoNotSkipEmptySections || downcast<RenderTableSection>(*prevSection).numRows())) |
| break; |
| prevSection = prevSection->previousSibling(); |
| } |
| if (!prevSection && m_head && (skipEmptySections == DoNotSkipEmptySections || m_head->numRows())) |
| prevSection = m_head.get(); |
| return downcast<RenderTableSection>(prevSection); |
| } |
| |
| RenderTableSection* RenderTable::sectionBelow(const RenderTableSection* section, SkipEmptySectionsValue skipEmptySections) const |
| { |
| recalcSectionsIfNeeded(); |
| |
| if (section == m_foot) |
| return nullptr; |
| |
| RenderObject* nextSection = section == m_head ? firstChild() : section->nextSibling(); |
| while (nextSection) { |
| if (is<RenderTableSection>(*nextSection) && nextSection != m_head && nextSection != m_foot && (skipEmptySections == DoNotSkipEmptySections || downcast<RenderTableSection>(*nextSection).numRows())) |
| break; |
| nextSection = nextSection->nextSibling(); |
| } |
| if (!nextSection && m_foot && (skipEmptySections == DoNotSkipEmptySections || m_foot->numRows())) |
| nextSection = m_foot.get(); |
| return downcast<RenderTableSection>(nextSection); |
| } |
| |
| RenderTableSection* RenderTable::bottomSection() const |
| { |
| recalcSectionsIfNeeded(); |
| if (m_foot) |
| return m_foot.get(); |
| for (RenderObject* child = lastChild(); child; child = child->previousSibling()) { |
| if (is<RenderTableSection>(*child)) |
| return downcast<RenderTableSection>(child); |
| } |
| return nullptr; |
| } |
| |
| RenderTableCell* RenderTable::cellAbove(const RenderTableCell* cell) const |
| { |
| recalcSectionsIfNeeded(); |
| |
| // Find the section and row to look in |
| unsigned r = cell->rowIndex(); |
| RenderTableSection* section = nullptr; |
| unsigned rAbove = 0; |
| if (r > 0) { |
| // cell is not in the first row, so use the above row in its own section |
| section = cell->section(); |
| rAbove = r - 1; |
| } else { |
| section = sectionAbove(cell->section(), SkipEmptySections); |
| if (section) { |
| ASSERT(section->numRows()); |
| rAbove = section->numRows() - 1; |
| } |
| } |
| |
| // Look up the cell in the section's grid, which requires effective col index |
| if (section) { |
| unsigned effCol = colToEffCol(cell->col()); |
| RenderTableSection::CellStruct& aboveCell = section->cellAt(rAbove, effCol); |
| return aboveCell.primaryCell(); |
| } else |
| return nullptr; |
| } |
| |
| RenderTableCell* RenderTable::cellBelow(const RenderTableCell* cell) const |
| { |
| recalcSectionsIfNeeded(); |
| |
| // Find the section and row to look in |
| unsigned r = cell->rowIndex() + cell->rowSpan() - 1; |
| RenderTableSection* section = nullptr; |
| unsigned rBelow = 0; |
| if (r < cell->section()->numRows() - 1) { |
| // The cell is not in the last row, so use the next row in the section. |
| section = cell->section(); |
| rBelow = r + 1; |
| } else { |
| section = sectionBelow(cell->section(), SkipEmptySections); |
| if (section) |
| rBelow = 0; |
| } |
| |
| // Look up the cell in the section's grid, which requires effective col index |
| if (section) { |
| unsigned effCol = colToEffCol(cell->col()); |
| RenderTableSection::CellStruct& belowCell = section->cellAt(rBelow, effCol); |
| return belowCell.primaryCell(); |
| } else |
| return nullptr; |
| } |
| |
| RenderTableCell* RenderTable::cellBefore(const RenderTableCell* cell) const |
| { |
| recalcSectionsIfNeeded(); |
| |
| RenderTableSection* section = cell->section(); |
| unsigned effCol = colToEffCol(cell->col()); |
| if (!effCol) |
| return nullptr; |
| |
| // If we hit a colspan back up to a real cell. |
| RenderTableSection::CellStruct& prevCell = section->cellAt(cell->rowIndex(), effCol - 1); |
| return prevCell.primaryCell(); |
| } |
| |
| RenderTableCell* RenderTable::cellAfter(const RenderTableCell* cell) const |
| { |
| recalcSectionsIfNeeded(); |
| |
| unsigned effCol = colToEffCol(cell->col() + cell->colSpan()); |
| if (effCol >= numEffCols()) |
| return nullptr; |
| return cell->section()->primaryCellAt(cell->rowIndex(), effCol); |
| } |
| |
| RenderBlock* RenderTable::firstLineBlock() const |
| { |
| return nullptr; |
| } |
| |
| int RenderTable::baselinePosition(FontBaseline baselineType, bool firstLine, LineDirectionMode direction, LinePositionMode linePositionMode) const |
| { |
| return valueOrCompute(firstLineBaseline(), [&] { |
| return RenderBox::baselinePosition(baselineType, firstLine, direction, linePositionMode); |
| }); |
| } |
| |
| Optional<int> RenderTable::inlineBlockBaseline(LineDirectionMode) const |
| { |
| // Tables are skipped when computing an inline-block's baseline. |
| return Optional<int>(); |
| } |
| |
| Optional<int> RenderTable::firstLineBaseline() const |
| { |
| // The baseline of a 'table' is the same as the 'inline-table' baseline per CSS 3 Flexbox (CSS 2.1 |
| // doesn't define the baseline of a 'table' only an 'inline-table'). |
| // This is also needed to properly determine the baseline of a cell if it has a table child. |
| |
| if (isWritingModeRoot()) |
| return Optional<int>(); |
| |
| recalcSectionsIfNeeded(); |
| |
| const RenderTableSection* topNonEmptySection = this->topNonEmptySection(); |
| if (!topNonEmptySection) |
| return Optional<int>(); |
| |
| if (Optional<int> baseline = topNonEmptySection->firstLineBaseline()) |
| return Optional<int>(topNonEmptySection->logicalTop() + baseline.value()); |
| |
| // FIXME: A table row always has a baseline per CSS 2.1. Will this return the right value? |
| return Optional<int>(); |
| } |
| |
| LayoutRect RenderTable::overflowClipRect(const LayoutPoint& location, RenderFragmentContainer* fragment, OverlayScrollbarSizeRelevancy relevancy, PaintPhase phase) |
| { |
| LayoutRect rect; |
| // Don't clip out the table's side of the collapsed borders if we're in the paint phase that will ask the sections to paint them. |
| // Likewise, if we're self-painting we avoid clipping them out as the clip rect that will be passed down to child layers from RenderLayer will do that instead. |
| if (phase == PaintPhase::ChildBlockBackgrounds || layer()->isSelfPaintingLayer()) { |
| rect = borderBoxRectInFragment(fragment); |
| rect.setLocation(location + rect.location()); |
| } else |
| rect = RenderBox::overflowClipRect(location, fragment, relevancy); |
| |
| // If we have a caption, expand the clip to include the caption. |
| // FIXME: Technically this is wrong, but it's virtually impossible to fix this |
| // for real until captions have been re-written. |
| // FIXME: This code assumes (like all our other caption code) that only top/bottom are |
| // supported. When we actually support left/right and stop mapping them to top/bottom, |
| // we might have to hack this code first (depending on what order we do these bug fixes in). |
| if (!m_captions.isEmpty()) { |
| if (style().isHorizontalWritingMode()) { |
| rect.setHeight(height()); |
| rect.setY(location.y()); |
| } else { |
| rect.setWidth(width()); |
| rect.setX(location.x()); |
| } |
| } |
| |
| return rect; |
| } |
| |
| bool RenderTable::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction action) |
| { |
| LayoutPoint adjustedLocation = accumulatedOffset + location(); |
| |
| // Check kids first. |
| if (!hasOverflowClip() || locationInContainer.intersects(overflowClipRect(adjustedLocation, nullptr))) { |
| for (RenderObject* child = lastChild(); child; child = child->previousSibling()) { |
| if (is<RenderBox>(*child) && !downcast<RenderBox>(*child).hasSelfPaintingLayer() && (child->isTableSection() || child->isTableCaption())) { |
| LayoutPoint childPoint = flipForWritingModeForChild(downcast<RenderBox>(child), adjustedLocation); |
| if (child->nodeAtPoint(request, result, locationInContainer, childPoint, action)) { |
| updateHitTestResult(result, toLayoutPoint(locationInContainer.point() - childPoint)); |
| return true; |
| } |
| } |
| } |
| } |
| |
| // Check our bounds next. |
| LayoutRect boundsRect(adjustedLocation, size()); |
| if (visibleToHitTesting() && (action == HitTestBlockBackground || action == HitTestChildBlockBackground) && locationInContainer.intersects(boundsRect)) { |
| updateHitTestResult(result, flipForWritingMode(locationInContainer.point() - toLayoutSize(adjustedLocation))); |
| if (result.addNodeToListBasedTestResult(element(), request, locationInContainer, boundsRect) == HitTestProgress::Stop) |
| return true; |
| } |
| |
| return false; |
| } |
| |
| RenderPtr<RenderTable> RenderTable::createTableWithStyle(Document& document, const RenderStyle& style) |
| { |
| auto table = createRenderer<RenderTable>(document, RenderStyle::createAnonymousStyleWithDisplay(style, style.display() == DisplayType::Inline ? DisplayType::InlineTable : DisplayType::Table)); |
| table->initializeStyle(); |
| return table; |
| } |
| |
| RenderPtr<RenderTable> RenderTable::createAnonymousWithParentRenderer(const RenderElement& parent) |
| { |
| return RenderTable::createTableWithStyle(parent.document(), parent.style()); |
| } |
| |
| const BorderValue& RenderTable::tableStartBorderAdjoiningCell(const RenderTableCell& cell) const |
| { |
| ASSERT(cell.isFirstOrLastCellInRow()); |
| if (isDirectionSame(this, cell.row())) |
| return style().borderStart(); |
| |
| return style().borderEnd(); |
| } |
| |
| const BorderValue& RenderTable::tableEndBorderAdjoiningCell(const RenderTableCell& cell) const |
| { |
| ASSERT(cell.isFirstOrLastCellInRow()); |
| if (isDirectionSame(this, cell.row())) |
| return style().borderEnd(); |
| |
| return style().borderStart(); |
| } |
| |
| void RenderTable::markForPaginationRelayoutIfNeeded() |
| { |
| auto* layoutState = view().frameView().layoutContext().layoutState(); |
| if (!layoutState || !layoutState->isPaginated() || (!layoutState->pageLogicalHeightChanged() && (!layoutState->pageLogicalHeight() || layoutState->pageLogicalOffset(this, logicalTop()) == pageLogicalOffset()))) |
| return; |
| |
| // When a table moves, we have to dirty all of the sections too. |
| if (!needsLayout()) |
| setChildNeedsLayout(MarkOnlyThis); |
| for (auto& child : childrenOfType<RenderTableSection>(*this)) { |
| if (!child.needsLayout()) |
| child.setChildNeedsLayout(MarkOnlyThis); |
| } |
| } |
| |
| } |
