Source/WebCore/rendering/RenderTableRow.cpp - WebKit - Git at Google

 /**
  * 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 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 "RenderTableRow.h"

 #include "Document.h"
 #include "HTMLNames.h"
 #include "HitTestResult.h"
 #include "PaintInfo.h"
 #include "RenderLayoutState.h"
 #include "RenderTableCell.h"
 #include "RenderTreeBuilder.h"
 #include "RenderView.h"
 #include "StyleInheritedData.h"
 #include <wtf/IsoMallocInlines.h>
 #include <wtf/StackStats.h>

 namespace WebCore {

 using namespace HTMLNames;

 WTF_MAKE_ISO_ALLOCATED_IMPL(RenderTableRow);

 RenderTableRow::RenderTableRow(Element& element, RenderStyle&& style)
     : RenderBox(element, WTFMove(style), 0)
     , m_rowIndex(unsetRowIndex)
 {
     setInline(false);
 }

 RenderTableRow::RenderTableRow(Document& document, RenderStyle&& style)
     : RenderBox(document, WTFMove(style), 0)
     , m_rowIndex(unsetRowIndex)
 {
     setInline(false);
 }

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

     section()->setNeedsCellRecalc();
 }

 static bool borderWidthChanged(const RenderStyle* oldStyle, const RenderStyle* newStyle)
 {
     return oldStyle->borderLeftWidth() != newStyle->borderLeftWidth()
         || oldStyle->borderTopWidth() != newStyle->borderTopWidth()
         || oldStyle->borderRightWidth() != newStyle->borderRightWidth()
         || oldStyle->borderBottomWidth() != newStyle->borderBottomWidth();
 }

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

     RenderBox::styleDidChange(diff, oldStyle);
     propagateStyleToAnonymousChildren(PropagateToAllChildren);

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

     // If border was changed, notify table.
     if (RenderTable* table = this->table()) {
         if (oldStyle && oldStyle->border() != style().border())
             table->invalidateCollapsedBorders();

         if (oldStyle && diff == StyleDifference::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.
             for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell())
                 cell->setChildNeedsLayout(MarkOnlyThis);
         }
     }
 }

 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();
 }

 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();
 }

 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(), hasTransform() || hasReflection() || style().isFlippedBlocksWritingMode());

     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->computeAndSetBlockDirectionMargins(*table());
             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 clippedOverflowRectForRepaint() 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::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) 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.
     LayoutRect result = RenderBox::clippedOverflowRectForRepaint(repaintContainer);
     for (RenderTableCell* 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->clippedOverflowRectForRepaint(repaintContainer));
     }
     return result;
 }

 // Hit Testing
 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.
     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()) {
             LayoutPoint cellPoint = 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)
 {
     LayoutPoint adjustedPaintOffset = paintOffset + location();
     PaintPhase paintPhase = paintInfo.phase;
     if ((paintPhase == PaintPhase::Outline || paintPhase == PaintPhase::SelfOutline) && style().visibility() == Visibility::Visible)
         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);
         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.
     repaint();
 }

 RenderPtr<RenderTableRow> RenderTableRow::createTableRowWithStyle(Document& document, const RenderStyle& style)
 {
     auto row = createRenderer<RenderTableRow>(document, RenderStyle::createAnonymousStyleWithDisplay(style, DisplayType::TableRow));
     row->initializeStyle();
     return row;
 }

 RenderPtr<RenderTableRow> RenderTableRow::createAnonymousWithParentRenderer(const RenderTableSection& parent)
 {
     return RenderTableRow::createTableRowWithStyle(parent.document(), parent.style());
 }

 } // namespace WebCore
	/**
	* 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 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 "RenderTableRow.h"

	#include "Document.h"
	#include "HTMLNames.h"
	#include "HitTestResult.h"
	#include "PaintInfo.h"
	#include "RenderLayoutState.h"
	#include "RenderTableCell.h"
	#include "RenderTreeBuilder.h"
	#include "RenderView.h"
	#include "StyleInheritedData.h"
	#include <wtf/IsoMallocInlines.h>
	#include <wtf/StackStats.h>

	namespace WebCore {

	using namespace HTMLNames;

	WTF_MAKE_ISO_ALLOCATED_IMPL(RenderTableRow);

	RenderTableRow::RenderTableRow(Element& element, RenderStyle&& style)
	: RenderBox(element, WTFMove(style), 0)
	, m_rowIndex(unsetRowIndex)
	{
	setInline(false);
	}

	RenderTableRow::RenderTableRow(Document& document, RenderStyle&& style)
	: RenderBox(document, WTFMove(style), 0)
	, m_rowIndex(unsetRowIndex)
	{
	setInline(false);
	}

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

	section()->setNeedsCellRecalc();
	}

	static bool borderWidthChanged(const RenderStyle* oldStyle, const RenderStyle* newStyle)
	{
	return oldStyle->borderLeftWidth() != newStyle->borderLeftWidth()
	\|\| oldStyle->borderTopWidth() != newStyle->borderTopWidth()
	\|\| oldStyle->borderRightWidth() != newStyle->borderRightWidth()
	\|\| oldStyle->borderBottomWidth() != newStyle->borderBottomWidth();
	}

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

	RenderBox::styleDidChange(diff, oldStyle);
	propagateStyleToAnonymousChildren(PropagateToAllChildren);

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

	// If border was changed, notify table.
	if (RenderTable* table = this->table()) {
	if (oldStyle && oldStyle->border() != style().border())
	table->invalidateCollapsedBorders();

	if (oldStyle && diff == StyleDifference::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.
	for (RenderTableCell* cell = firstCell(); cell; cell = cell->nextCell())
	cell->setChildNeedsLayout(MarkOnlyThis);
	}
	}
	}

	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();
	}

	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();
	}

	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(), hasTransform() \|\| hasReflection() \|\| style().isFlippedBlocksWritingMode());

	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->computeAndSetBlockDirectionMargins(*table());
	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 clippedOverflowRectForRepaint() 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::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) 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.
	LayoutRect result = RenderBox::clippedOverflowRectForRepaint(repaintContainer);
	for (RenderTableCell* 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->clippedOverflowRectForRepaint(repaintContainer));
	}
	return result;
	}

	// Hit Testing
	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.
	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()) {
	LayoutPoint cellPoint = 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)
	{
	LayoutPoint adjustedPaintOffset = paintOffset + location();
	PaintPhase paintPhase = paintInfo.phase;
	if ((paintPhase == PaintPhase::Outline \|\| paintPhase == PaintPhase::SelfOutline) && style().visibility() == Visibility::Visible)
	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);
	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.
	repaint();
	}

	RenderPtr<RenderTableRow> RenderTableRow::createTableRowWithStyle(Document& document, const RenderStyle& style)
	{
	auto row = createRenderer<RenderTableRow>(document, RenderStyle::createAnonymousStyleWithDisplay(style, DisplayType::TableRow));
	row->initializeStyle();
	return row;
	}

	RenderPtr<RenderTableRow> RenderTableRow::createAnonymousWithParentRenderer(const RenderTableSection& parent)
	{
	return RenderTableRow::createTableRowWithStyle(parent.document(), parent.style());
	}

	} // namespace WebCore