Source/WebCore/rendering/RenderTableRow.cpp - external/github.com/WebKit/webkit - Git at Google

 /*
  * Copyright (C) 1997 Martin Jones ([email protected])
  *           (C) 1997 Torben Weis ([email protected])
  *           (C) 1998 Waldo Bastian ([email protected])
  *           (C) 1999 Lars Knoll ([email protected])
  *           (C) 1999 Antti Koivisto ([email protected])
  * Copyright (C) 2003-2023 Apple Inc. All rights reserved.
  * Copyright (C) 2015 Google Inc. All rights reserved.
  * Copyright (C) 2026 Samuel Weinig <[email protected]>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */

 #include "config.h"
 #include "RenderTableRow.h"

 #include "Document.h"
 #include "HTMLNames.h"
 #include "HitTestResult.h"
 #include "PaintInfo.h"
 #include "RenderBoxInlines.h"
 #include "RenderBoxModelObjectInlines.h"
 #include "RenderElementInlines.h"
 #include "RenderElementStyleInlines.h"
 #include "RenderLayoutState.h"
 #include "RenderObjectInlines.h"
 #include "RenderTableCell.h"
 #include "RenderTreeBuilder.h"
 #include "RenderView.h"
 #include <wtf/StackStats.h>
 #include <wtf/TZoneMallocInlines.h>

 namespace WebCore {

 using namespace HTMLNames;

 WTF_MAKE_TZONE_ALLOCATED_IMPL(RenderTableRow);

 RenderTableRow::RenderTableRow(Element& element, RenderStyle&& style)
     : RenderBox(Type::TableRow, element, WTF::move(style))
     , m_rowIndex(unsetRowIndex)
 {
     setInline(false);
     ASSERT(isRenderTableRow());
 }

 RenderTableRow::RenderTableRow(Document& document, RenderStyle&& style)
     : RenderBox(Type::TableRow, document, WTF::move(style))
     , m_rowIndex(unsetRowIndex)
 {
     setInline(false);
     ASSERT(isRenderTableRow());
 }

 RenderTableRow::~RenderTableRow() = default;

 ASCIILiteral RenderTableRow::renderName() const
 {
     return (isAnonymous() || isPseudoElement()) ? "RenderTableRow (anonymous)"_s : "RenderTableRow"_s;
 }

 void RenderTableRow::willBeRemovedFromTree()
 {
     RenderBox::willBeRemovedFromTree();

     section()->setNeedsCellRecalc();
 }

 static bool borderWidthChanged(const RenderStyle* oldStyle, const RenderStyle* newStyle)
 {
     return oldStyle->usedBorderLeftWidth() != newStyle->usedBorderLeftWidth()
         || oldStyle->usedBorderTopWidth() != newStyle->usedBorderTopWidth()
         || oldStyle->usedBorderRightWidth() != newStyle->usedBorderRightWidth()
         || oldStyle->usedBorderBottomWidth() != newStyle->usedBorderBottomWidth();
 }

 void RenderTableRow::styleDidChange(Style::Difference diff, const RenderStyle* oldStyle)
 {
     ASSERT(style().display() == DisplayType::TableRow);

     RenderBox::styleDidChange(diff, oldStyle);
     propagateStyleToAnonymousChildren(StylePropagationType::AllChildren);

     if (section() && oldStyle && style().logicalHeight() != oldStyle->logicalHeight())
         section()->rowLogicalHeightChanged(rowIndex());

     // If border was changed, notify table.
     if (CheckedPtr table = this->table()) {
         if (oldStyle)
             table->invalidateCollapsedBordersAfterStyleChangeIfNeeded(*oldStyle, style());

         if (oldStyle && diff == Style::DifferenceResult::Layout && needsLayout() && table->collapseBorders() && borderWidthChanged(oldStyle, &style())) {
             // If the border width changes on a row, we need to make sure the cells in the row know to lay out again.
             // This only happens when borders are collapsed, since they end up affecting the border sides of the cell
             // itself.
             auto propagageNeedsLayoutOnBorderSizeChange = [&] (auto& row) {
                 for (auto* cell = row.firstCell(); cell; cell = cell->nextCell())
                     cell->setNeedsLayoutAndPreferredWidthsUpdate();
             };
             propagageNeedsLayoutOnBorderSizeChange(*this);
             if (auto* previousRow = this->previousRow())
                 propagageNeedsLayoutOnBorderSizeChange(*previousRow);
             if (auto* nextRow = this->nextRow())
                 propagageNeedsLayoutOnBorderSizeChange(*nextRow);
         }
     }
 }

 const BorderValue& RenderTableRow::borderAdjoiningStartCell(const RenderTableCell& cell) const
 {
     ASSERT_UNUSED(cell, cell.isFirstOrLastCellInRow());
     // FIXME: https://webkit.org/b/79272 - Add support for mixed directionality at the cell level.
     return style().borderStart(table()->writingMode());
 }

 const BorderValue& RenderTableRow::borderAdjoiningEndCell(const RenderTableCell& cell) const
 {
     ASSERT_UNUSED(cell, cell.isFirstOrLastCellInRow());
     // FIXME: https://webkit.org/b/79272 - Add support for mixed directionality at the cell level.
     return style().borderEnd(table()->writingMode());
 }

 void RenderTableRow::didInsertTableCell(RenderTableCell& child, RenderObject* beforeChild)
 {
     // Generated content can result in us having a null section so make sure to null check our parent.
     if (auto* section = this->section()) {
         section->addCell(&child, this);
         if (beforeChild || nextRow())
             section->setNeedsCellRecalc();
     }
     if (auto* table = this->table())
         table->invalidateCollapsedBorders();
 }

 void RenderTableRow::layout()
 {
     StackStats::LayoutCheckPoint layoutCheckPoint;
     ASSERT(needsLayout());

     // Table rows do not add translation.
     LayoutStateMaintainer statePusher(*this, LayoutSize(), isTransformed() || hasReflection() || writingMode().isBlockFlipped());

     auto* layoutState = view().frameView().layoutContext().layoutState();
     bool paginated = layoutState->isPaginated();

     for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell()) {
         if (!cell->needsLayout() && paginated && (layoutState->pageLogicalHeightChanged() || (layoutState->pageLogicalHeight() && layoutState->pageLogicalOffset(cell, cell->logicalTop()) != cell->pageLogicalOffset())))
             cell->setChildNeedsLayout(MarkOnlyThis);

         if (cell->needsLayout()) {
             cell->layout();
         }
     }

     clearOverflow();
     addVisualEffectOverflow();
     // We only ever need to repaint if our cells didn't, which menas that they didn't need
     // layout, so we know that our bounds didn't change. This code is just making up for
     // the fact that we did not repaint in setStyle() because we had a layout hint.
     // We cannot call repaint() because our clippedOverflowRect() is taken from the
     // parent table, and being mid-layout, that is invalid. Instead, we repaint our cells.
     if (selfNeedsLayout() && checkForRepaintDuringLayout()) {
         for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell())
             cell->repaint();
     }

     // RenderTableSection::layoutRows will set our logical height and width later, so it calls updateLayerTransform().
     clearNeedsLayout();
 }

 LayoutRect RenderTableRow::clippedOverflowRect(const RenderLayerModelObject* repaintContainer, VisibleRectContext context) const
 {
     ASSERT(parent());
     // Rows and cells are in the same coordinate space. We need to both compute our overflow rect (which
     // will accommodate a row outline and any visual effects on the row itself), but we also need to add in
     // the repaint rects of cells.
     auto result = RenderBox::clippedOverflowRect(repaintContainer, context);
     for (auto* cell = firstCell(); cell; cell = cell->nextCell()) {
         // Even if a cell is a repaint container, it's the row that paints the background behind it.
         // So we don't care if a cell is a repaintContainer here.
         result.uniteIfNonZero(cell->clippedOverflowRect(repaintContainer, context));
     }
     return result;
 }

 auto RenderTableRow::rectsForRepaintingAfterLayout(const RenderLayerModelObject* repaintContainer, RepaintOutlineBounds repaintOutlineBounds) const -> RepaintRects
 {
     auto rects = RepaintRects { clippedOverflowRect(repaintContainer, visibleRectContextForRepaint()) };
     if (repaintOutlineBounds == RepaintOutlineBounds::Yes)
         rects.outlineBoundsRect = outlineBoundsForRepaint(repaintContainer);

     return rects;
 }

 bool RenderTableRow::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction action)
 {
     // Table rows cannot ever be hit tested.  Effectively they do not exist.
     // Just forward to our children always.
     auto* section = this->section();
     if (!section)
         return false;

     for (RenderTableCell* cell = lastCell(); cell; cell = cell->previousCell()) {
         // FIXME: We have to skip over inline flows, since they can show up inside table rows
         // at the moment (a demoted inline <form> for example). If we ever implement a
         // table-specific hit-test method (which we should do for performance reasons anyway),
         // then we can remove this check.
         if (!cell->hasSelfPaintingLayer()) {
             auto cellPoint = section->flipForWritingModeForChild(*cell, accumulatedOffset);
             if (cell->nodeAtPoint(request, result, locationInContainer, cellPoint, action)) {
                 updateHitTestResult(result, locationInContainer.point() - toLayoutSize(cellPoint));
                 return true;
             }
         }
     }

     return false;
 }

 void RenderTableRow::paintOutlineForRowIfNeeded(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     PaintPhase paintPhase = paintInfo.phase;
     if ((paintPhase == PaintPhase::Outline || paintPhase == PaintPhase::SelfOutline) && style().usedVisibility() == Visibility::Visible) {
         auto adjustedPaintOffset = paintOffset + location();
         paintOutline(paintInfo, LayoutRect(adjustedPaintOffset, size()));
     }
 }

 void RenderTableRow::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     ASSERT(hasSelfPaintingLayer());

     paintOutlineForRowIfNeeded(paintInfo, paintOffset);
     for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell()) {
         // Paint the row background behind the cell.
         if (paintInfo.phase == PaintPhase::BlockBackground || paintInfo.phase == PaintPhase::ChildBlockBackground)
             cell->paintBackgroundsBehindCell(paintInfo, paintOffset, this, paintOffset);
         if (!cell->hasSelfPaintingLayer())
             cell->paint(paintInfo, paintOffset);
     }
 }

 void RenderTableRow::imageChanged(WrappedImagePtr, const IntRect*)
 {
     // FIXME: Examine cells and repaint only the rect the image paints in.
     if (!parent())
         return;
     repaint();
 }

 bool RenderTableRow::requiresLayer() const
 {
     return hasNonVisibleOverflow() || hasTransformRelatedProperty() || hasHiddenBackface() || hasClipPath() || createsGroup() || isStickilyPositioned() || requiresRenderingConsolidationForViewTransition();
 }

 } // namespace WebCore
	/*
	* Copyright (C) 1997 Martin Jones ([email protected])
	* (C) 1997 Torben Weis ([email protected])
	* (C) 1998 Waldo Bastian ([email protected])
	* (C) 1999 Lars Knoll ([email protected])
	* (C) 1999 Antti Koivisto ([email protected])
	* Copyright (C) 2003-2023 Apple Inc. All rights reserved.
	* Copyright (C) 2015 Google Inc. All rights reserved.
	* Copyright (C) 2026 Samuel Weinig <[email protected]>
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Library General Public
	* License as published by the Free Software Foundation; either
	* version 2 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Library General Public License for more details.
	*
	* You should have received a copy of the GNU Library General Public License
	* along with this library; see the file COPYING.LIB. If not, write to
	* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
	* Boston, MA 02110-1301, USA.
	*/

	#include "config.h"
	#include "RenderTableRow.h"

	#include "Document.h"
	#include "HTMLNames.h"
	#include "HitTestResult.h"
	#include "PaintInfo.h"
	#include "RenderBoxInlines.h"
	#include "RenderBoxModelObjectInlines.h"
	#include "RenderElementInlines.h"
	#include "RenderElementStyleInlines.h"
	#include "RenderLayoutState.h"
	#include "RenderObjectInlines.h"
	#include "RenderTableCell.h"
	#include "RenderTreeBuilder.h"
	#include "RenderView.h"
	#include <wtf/StackStats.h>
	#include <wtf/TZoneMallocInlines.h>

	namespace WebCore {

	using namespace HTMLNames;

	WTF_MAKE_TZONE_ALLOCATED_IMPL(RenderTableRow);

	RenderTableRow::RenderTableRow(Element& element, RenderStyle&& style)
	: RenderBox(Type::TableRow, element, WTF::move(style))
	, m_rowIndex(unsetRowIndex)
	{
	setInline(false);
	ASSERT(isRenderTableRow());
	}

	RenderTableRow::RenderTableRow(Document& document, RenderStyle&& style)
	: RenderBox(Type::TableRow, document, WTF::move(style))
	, m_rowIndex(unsetRowIndex)
	{
	setInline(false);
	ASSERT(isRenderTableRow());
	}

	RenderTableRow::~RenderTableRow() = default;

	ASCIILiteral RenderTableRow::renderName() const
	{
	return (isAnonymous() \|\| isPseudoElement()) ? "RenderTableRow (anonymous)"_s : "RenderTableRow"_s;
	}

	void RenderTableRow::willBeRemovedFromTree()
	{
	RenderBox::willBeRemovedFromTree();

	section()->setNeedsCellRecalc();
	}

	static bool borderWidthChanged(const RenderStyle* oldStyle, const RenderStyle* newStyle)
	{
	return oldStyle->usedBorderLeftWidth() != newStyle->usedBorderLeftWidth()
	\|\| oldStyle->usedBorderTopWidth() != newStyle->usedBorderTopWidth()
	\|\| oldStyle->usedBorderRightWidth() != newStyle->usedBorderRightWidth()
	\|\| oldStyle->usedBorderBottomWidth() != newStyle->usedBorderBottomWidth();
	}

	void RenderTableRow::styleDidChange(Style::Difference diff, const RenderStyle* oldStyle)
	{
	ASSERT(style().display() == DisplayType::TableRow);

	RenderBox::styleDidChange(diff, oldStyle);
	propagateStyleToAnonymousChildren(StylePropagationType::AllChildren);

	if (section() && oldStyle && style().logicalHeight() != oldStyle->logicalHeight())
	section()->rowLogicalHeightChanged(rowIndex());

	// If border was changed, notify table.
	if (CheckedPtr table = this->table()) {
	if (oldStyle)
	table->invalidateCollapsedBordersAfterStyleChangeIfNeeded(*oldStyle, style());

	if (oldStyle && diff == Style::DifferenceResult::Layout && needsLayout() && table->collapseBorders() && borderWidthChanged(oldStyle, &style())) {
	// If the border width changes on a row, we need to make sure the cells in the row know to lay out again.
	// This only happens when borders are collapsed, since they end up affecting the border sides of the cell
	// itself.
	auto propagageNeedsLayoutOnBorderSizeChange = [&] (auto& row) {
	for (auto* cell = row.firstCell(); cell; cell = cell->nextCell())
	cell->setNeedsLayoutAndPreferredWidthsUpdate();
	};
	propagageNeedsLayoutOnBorderSizeChange(*this);
	if (auto* previousRow = this->previousRow())
	propagageNeedsLayoutOnBorderSizeChange(*previousRow);
	if (auto* nextRow = this->nextRow())
	propagageNeedsLayoutOnBorderSizeChange(*nextRow);
	}
	}
	}

	const BorderValue& RenderTableRow::borderAdjoiningStartCell(const RenderTableCell& cell) const
	{
	ASSERT_UNUSED(cell, cell.isFirstOrLastCellInRow());
	// FIXME: https://webkit.org/b/79272 - Add support for mixed directionality at the cell level.
	return style().borderStart(table()->writingMode());
	}

	const BorderValue& RenderTableRow::borderAdjoiningEndCell(const RenderTableCell& cell) const
	{
	ASSERT_UNUSED(cell, cell.isFirstOrLastCellInRow());
	// FIXME: https://webkit.org/b/79272 - Add support for mixed directionality at the cell level.
	return style().borderEnd(table()->writingMode());
	}

	void RenderTableRow::didInsertTableCell(RenderTableCell& child, RenderObject* beforeChild)
	{
	// Generated content can result in us having a null section so make sure to null check our parent.
	if (auto* section = this->section()) {
	section->addCell(&child, this);
	if (beforeChild \|\| nextRow())
	section->setNeedsCellRecalc();
	}
	if (auto* table = this->table())
	table->invalidateCollapsedBorders();
	}

	void RenderTableRow::layout()
	{
	StackStats::LayoutCheckPoint layoutCheckPoint;
	ASSERT(needsLayout());

	// Table rows do not add translation.
	LayoutStateMaintainer statePusher(*this, LayoutSize(), isTransformed() \|\| hasReflection() \|\| writingMode().isBlockFlipped());

	auto* layoutState = view().frameView().layoutContext().layoutState();
	bool paginated = layoutState->isPaginated();

	for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell()) {
	if (!cell->needsLayout() && paginated && (layoutState->pageLogicalHeightChanged() \|\| (layoutState->pageLogicalHeight() && layoutState->pageLogicalOffset(cell, cell->logicalTop()) != cell->pageLogicalOffset())))
	cell->setChildNeedsLayout(MarkOnlyThis);

	if (cell->needsLayout()) {
	cell->layout();
	}
	}

	clearOverflow();
	addVisualEffectOverflow();
	// We only ever need to repaint if our cells didn't, which menas that they didn't need
	// layout, so we know that our bounds didn't change. This code is just making up for
	// the fact that we did not repaint in setStyle() because we had a layout hint.
	// We cannot call repaint() because our clippedOverflowRect() is taken from the
	// parent table, and being mid-layout, that is invalid. Instead, we repaint our cells.
	if (selfNeedsLayout() && checkForRepaintDuringLayout()) {
	for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell())
	cell->repaint();
	}

	// RenderTableSection::layoutRows will set our logical height and width later, so it calls updateLayerTransform().
	clearNeedsLayout();
	}

	LayoutRect RenderTableRow::clippedOverflowRect(const RenderLayerModelObject* repaintContainer, VisibleRectContext context) const
	{
	ASSERT(parent());
	// Rows and cells are in the same coordinate space. We need to both compute our overflow rect (which
	// will accommodate a row outline and any visual effects on the row itself), but we also need to add in
	// the repaint rects of cells.
	auto result = RenderBox::clippedOverflowRect(repaintContainer, context);
	for (auto* cell = firstCell(); cell; cell = cell->nextCell()) {
	// Even if a cell is a repaint container, it's the row that paints the background behind it.
	// So we don't care if a cell is a repaintContainer here.
	result.uniteIfNonZero(cell->clippedOverflowRect(repaintContainer, context));
	}
	return result;
	}

	auto RenderTableRow::rectsForRepaintingAfterLayout(const RenderLayerModelObject* repaintContainer, RepaintOutlineBounds repaintOutlineBounds) const -> RepaintRects
	{
	auto rects = RepaintRects { clippedOverflowRect(repaintContainer, visibleRectContextForRepaint()) };
	if (repaintOutlineBounds == RepaintOutlineBounds::Yes)
	rects.outlineBoundsRect = outlineBoundsForRepaint(repaintContainer);

	return rects;
	}

	bool RenderTableRow::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction action)
	{
	// Table rows cannot ever be hit tested. Effectively they do not exist.
	// Just forward to our children always.
	auto* section = this->section();
	if (!section)
	return false;

	for (RenderTableCell* cell = lastCell(); cell; cell = cell->previousCell()) {
	// FIXME: We have to skip over inline flows, since they can show up inside table rows
	// at the moment (a demoted inline <form> for example). If we ever implement a
	// table-specific hit-test method (which we should do for performance reasons anyway),
	// then we can remove this check.
	if (!cell->hasSelfPaintingLayer()) {
	auto cellPoint = section->flipForWritingModeForChild(*cell, accumulatedOffset);
	if (cell->nodeAtPoint(request, result, locationInContainer, cellPoint, action)) {
	updateHitTestResult(result, locationInContainer.point() - toLayoutSize(cellPoint));
	return true;
	}
	}
	}

	return false;
	}

	void RenderTableRow::paintOutlineForRowIfNeeded(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
	{
	PaintPhase paintPhase = paintInfo.phase;
	if ((paintPhase == PaintPhase::Outline \|\| paintPhase == PaintPhase::SelfOutline) && style().usedVisibility() == Visibility::Visible) {
	auto adjustedPaintOffset = paintOffset + location();
	paintOutline(paintInfo, LayoutRect(adjustedPaintOffset, size()));
	}
	}

	void RenderTableRow::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
	{
	ASSERT(hasSelfPaintingLayer());

	paintOutlineForRowIfNeeded(paintInfo, paintOffset);
	for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell()) {
	// Paint the row background behind the cell.
	if (paintInfo.phase == PaintPhase::BlockBackground \|\| paintInfo.phase == PaintPhase::ChildBlockBackground)
	cell->paintBackgroundsBehindCell(paintInfo, paintOffset, this, paintOffset);
	if (!cell->hasSelfPaintingLayer())
	cell->paint(paintInfo, paintOffset);
	}
	}

	void RenderTableRow::imageChanged(WrappedImagePtr, const IntRect*)
	{
	// FIXME: Examine cells and repaint only the rect the image paints in.
	if (!parent())
	return;
	repaint();
	}

	bool RenderTableRow::requiresLayer() const
	{
	return hasNonVisibleOverflow() \|\| hasTransformRelatedProperty() \|\| hasHiddenBackface() \|\| hasClipPath() \|\| createsGroup() \|\| isStickilyPositioned() \|\| requiresRenderingConsolidationForViewTransition();
	}

	} // namespace WebCore