| /* |
| * Copyright (C) 1999 Lars Knoll ([email protected]) |
| * (C) 1999 Antti Koivisto ([email protected]) |
| * Copyright (C) 2003-2025 Apple Inc. All rights reserved. |
| * Copyright (C) 2014 Google Inc. All rights reserved. |
| * Copyright (C) 2025 Samuel Weinig <[email protected]> |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #include "config.h" |
| #include "RenderInline.h" |
| |
| #include "Chrome.h" |
| #include "FloatQuad.h" |
| #include "FrameSelection.h" |
| #include "GraphicsContext.h" |
| #include "HitTestResult.h" |
| #include "InlineIteratorBoxInlines.h" |
| #include "InlineIteratorInlineBox.h" |
| #include "InlineIteratorLineBox.h" |
| #include "LayoutIntegrationLineLayout.h" |
| #include "LegacyInlineTextBox.h" |
| #include "OutlinePainter.h" |
| #include "RenderBlock.h" |
| #include "RenderBoxInlines.h" |
| #include "RenderChildIterator.h" |
| #include "RenderElementStyleInlines.h" |
| #include "RenderElementInlines.h" |
| #include "RenderFragmentedFlow.h" |
| #include "RenderGeometryMap.h" |
| #include "RenderIterator.h" |
| #include "RenderLayer.h" |
| #include "RenderLayoutState.h" |
| #include "RenderLineBreak.h" |
| #include "RenderListMarker.h" |
| #include "RenderObjectInlines.h" |
| #include "RenderTable.h" |
| #include "RenderTheme.h" |
| #include "RenderTreeBuilder.h" |
| #include "RenderView.h" |
| #include "Settings.h" |
| #include "TransformState.h" |
| #include "VisiblePosition.h" |
| #include <wtf/SetForScope.h> |
| #include <wtf/TZoneMallocInlines.h> |
| |
| namespace WebCore { |
| |
| WTF_MAKE_TZONE_ALLOCATED_IMPL(RenderInline); |
| |
| RenderInline::RenderInline(Type type, Element& element, RenderStyle&& style) |
| : RenderBoxModelObject(type, element, WTF::move(style), TypeFlag::IsRenderInline, { }) |
| { |
| setChildrenInline(true); |
| ASSERT(isRenderInline()); |
| } |
| |
| RenderInline::RenderInline(Type type, Document& document, RenderStyle&& style) |
| : RenderBoxModelObject(type, document, WTF::move(style), TypeFlag::IsRenderInline, { }) |
| { |
| setChildrenInline(true); |
| ASSERT(isRenderInline()); |
| } |
| |
| RenderInline::~RenderInline() = default; |
| |
| void RenderInline::willBeDestroyed() |
| { |
| #if ASSERT_ENABLED |
| // Make sure we do not retain "this" in the continuation outline table map of our containing blocks. |
| if (parent() && style().usedVisibility() == Visibility::Visible && hasOutline()) { |
| bool containingBlockPaintsContinuationOutline = continuation() || isContinuation(); |
| if (containingBlockPaintsContinuationOutline) { |
| if (RenderBlock* cb = containingBlock()) { |
| if (RenderBlock* cbCb = cb->containingBlock()) |
| ASSERT(!cbCb->paintsContinuationOutline(*this)); |
| } |
| } |
| } |
| #endif // ASSERT_ENABLED |
| |
| if (!renderTreeBeingDestroyed()) { |
| if (auto* inlineBox = firstLegacyInlineBox()) { |
| // We can't wait for RenderBoxModelObject::destroy to clear the selection, |
| // because by then we will have nuked the line boxes. |
| if (isSelectionBorder()) |
| frame().selection().setNeedsSelectionUpdate(); |
| |
| // If line boxes are contained inside a root, that means we're an inline. |
| // In that case, we need to remove all the line boxes so that the parent |
| // lines aren't pointing to deleted children. If the first line box does |
| // not have a parent that means they are either already disconnected or |
| // root lines that can just be destroyed without disconnecting. |
| if (inlineBox->parent()) { |
| for (auto* box = inlineBox; box; box = box->nextLineBox()) |
| box->removeFromParent(); |
| } |
| } else if (auto* parent = this->parent(); parent && parent->isSVGRenderer()) |
| parent->dirtyLineFromChangedChild(); |
| } |
| |
| m_legacyLineBoxes.deleteLineBoxes(); |
| |
| RenderBoxModelObject::willBeDestroyed(); |
| } |
| |
| void RenderInline::updateFromStyle() |
| { |
| RenderBoxModelObject::updateFromStyle(); |
| |
| // FIXME: Support transforms and reflections on inline flows someday. |
| setHasTransformRelatedProperty(false); |
| setHasReflection(false); |
| } |
| |
| static RenderElement* inFlowPositionedInlineAncestor(RenderElement* p) |
| { |
| while (p && p->isRenderInline()) { |
| if (p->isInFlowPositioned()) |
| return p; |
| p = p->parent(); |
| } |
| return nullptr; |
| } |
| |
| static void updateStyleOfAnonymousBlockContinuations(const RenderBlock& block, const RenderStyle* newStyle, const RenderStyle* oldStyle) |
| { |
| // If any descendant blocks exist then they will be in the next anonymous block and its siblings. |
| for (RenderBox* box = block.nextSiblingBox(); box && box->isAnonymousBlock(); box = box->nextSiblingBox()) { |
| if (box->style().position() == newStyle->position()) |
| continue; |
| |
| CheckedPtr block = dynamicDowncast<RenderBlock>(*box); |
| if (!block) |
| continue; |
| |
| if (!block->isContinuation()) |
| continue; |
| |
| // If we are no longer in-flow positioned but our descendant block(s) still have an in-flow positioned ancestor then |
| // their containing anonymous block should keep its in-flow positioning. |
| RenderInline* continuation = block->inlineContinuation(); |
| if (oldStyle->hasInFlowPosition() && inFlowPositionedInlineAncestor(continuation)) |
| continue; |
| auto blockStyle = RenderStyle::createAnonymousStyleWithDisplay(block->style(), DisplayType::Block); |
| blockStyle.setPosition(newStyle->position()); |
| block->setStyle(WTF::move(blockStyle)); |
| } |
| } |
| |
| void RenderInline::styleWillChange(Style::Difference diff, const RenderStyle& newStyle) |
| { |
| RenderBoxModelObject::styleWillChange(diff, newStyle); |
| |
| // RenderInlines forward their absolute positioned descendants to their (non-anonymous) containing block. |
| // Check if this non-anonymous containing block can hold the absolute positioned elements when the inline is no longer positioned. |
| CheckedPtr container = containingBlock(); |
| if (!container) |
| return; |
| |
| const RenderStyle* oldStyle = hasInitializedStyle() ? &style() : nullptr; |
| if (oldStyle) |
| removeOutOfFlowBoxesIfNeededOnStyleChange(*container, *oldStyle, newStyle); |
| } |
| |
| void RenderInline::styleDidChange(Style::Difference diff, const RenderStyle* oldStyle) |
| { |
| RenderBoxModelObject::styleDidChange(diff, oldStyle); |
| |
| // Ensure that all of the split inlines pick up the new style. We |
| // only do this if we're an inline, since we don't want to propagate |
| // a block's style to the other inlines. |
| // e.g., <font>foo <h4>goo</h4> moo</font>. The <font> inlines before |
| // and after the block share the same style, but the block doesn't |
| // need to pass its style on to anyone else. |
| auto& newStyle = style(); |
| RenderInline* continuation = inlineContinuation(); |
| if (continuation && !isContinuation()) { |
| for (RenderInline* currCont = continuation; currCont; currCont = currCont->inlineContinuation()) |
| currCont->setStyle(RenderStyle::clone(newStyle)); |
| // If an inline's in-flow positioning has changed and it is part of an active continuation as a descendant of an anonymous containing block, |
| // then any descendant blocks will need to change their in-flow positioning accordingly. |
| // Do this by updating the position of the descendant blocks' containing anonymous blocks - there may be more than one. |
| if (containingBlock()->isAnonymousBlock() && oldStyle && newStyle.position() != oldStyle->position() && (newStyle.hasInFlowPosition() || oldStyle->hasInFlowPosition())) |
| updateStyleOfAnonymousBlockContinuations(*containingBlock(), &newStyle, oldStyle); |
| } |
| |
| propagateStyleToAnonymousChildren(StylePropagationType::AllChildren); |
| } |
| |
| bool RenderInline::mayAffectLayout() const |
| { |
| auto* parentStyle = &parent()->style(); |
| auto* parentRenderInline = dynamicDowncast<RenderInline>(*parent()); |
| auto hasHardLineBreakChildOnly = firstChild() && firstChild() == lastChild() && firstChild()->isBR(); |
| bool checkFonts = document().inNoQuirksMode(); |
| auto mayAffectLayout = (parentRenderInline && parentRenderInline->mayAffectLayout()) |
| || (parentRenderInline && !WTF::holdsAlternative<CSS::Keyword::Baseline>(parentStyle->verticalAlign())) |
| || !WTF::holdsAlternative<CSS::Keyword::Baseline>(style().verticalAlign()) |
| || !style().textEmphasisStyle().isNone() |
| || (checkFonts && (!parentStyle->fontCascade().metricsOfPrimaryFont().hasIdenticalAscentDescentAndLineGap(style().fontCascade().metricsOfPrimaryFont()) |
| || parentStyle->lineHeight() != style().lineHeight())) |
| || hasHardLineBreakChildOnly; |
| |
| if (!mayAffectLayout && checkFonts) { |
| // Have to check the first line style as well. |
| parentStyle = &parent()->firstLineStyle(); |
| auto& childStyle = firstLineStyle(); |
| mayAffectLayout = !parentStyle->fontCascade().metricsOfPrimaryFont().hasIdenticalAscentDescentAndLineGap(childStyle.fontCascade().metricsOfPrimaryFont()) |
| || !WTF::holdsAlternative<CSS::Keyword::Baseline>(childStyle.verticalAlign()) |
| || parentStyle->lineHeight() != childStyle.lineHeight(); |
| } |
| return mayAffectLayout; |
| } |
| |
| void RenderInline::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset) |
| { |
| if (auto* lineLayout = LayoutIntegration::LineLayout::containing(*this)) |
| lineLayout->paint(paintInfo, paintOffset, this); |
| } |
| |
| template<typename GeneratorContext> |
| void RenderInline::generateLineBoxRects(GeneratorContext& context) const |
| { |
| if (auto* lineLayout = LayoutIntegration::LineLayout::containing(*this)) { |
| auto inlineBoxRects = lineLayout->collectInlineBoxRects(*this); |
| if (inlineBoxRects.isEmpty()) { |
| context.addRect({ }); |
| return; |
| } |
| for (auto inlineBoxRect : inlineBoxRects) |
| context.addRect(inlineBoxRect); |
| return; |
| } |
| if (auto* curr = firstLegacyInlineBox()) { |
| for (; curr; curr = curr->nextLineBox()) |
| context.addRect(FloatRect(curr->topLeft(), curr->size())); |
| } else |
| context.addRect(FloatRect()); |
| } |
| |
| class AbsoluteRectsGeneratorContext { |
| public: |
| AbsoluteRectsGeneratorContext(Vector<LayoutRect>& rects, const LayoutPoint& accumulatedOffset) |
| : m_rects(rects) |
| , m_accumulatedOffset(accumulatedOffset) { } |
| |
| void addRect(const FloatRect& rect) |
| { |
| LayoutRect adjustedRect = LayoutRect(rect); |
| adjustedRect.moveBy(m_accumulatedOffset); |
| m_rects.append(adjustedRect); |
| } |
| private: |
| Vector<LayoutRect>& m_rects; |
| const LayoutPoint& m_accumulatedOffset; |
| }; |
| |
| void RenderInline::boundingRects(Vector<LayoutRect>& rects, const LayoutPoint& accumulatedOffset) const |
| { |
| AbsoluteRectsGeneratorContext context(rects, accumulatedOffset); |
| generateLineBoxRects(context); |
| |
| if (auto* continuation = this->continuation()) { |
| if (auto* box = dynamicDowncast<RenderBox>(*continuation)) { |
| continuation->boundingRects(rects, toLayoutPoint(accumulatedOffset - containingBlock()->location() + box->locationOffset())); |
| } else |
| continuation->boundingRects(rects, toLayoutPoint(accumulatedOffset - containingBlock()->location())); |
| } |
| } |
| |
| namespace { |
| |
| class AbsoluteQuadsGeneratorContext { |
| public: |
| AbsoluteQuadsGeneratorContext(const RenderInline* renderer, Vector<FloatQuad>& quads) |
| : m_quads(quads) |
| , m_geometryMap() |
| { |
| m_geometryMap.pushMappingsToAncestor(renderer, nullptr); |
| } |
| |
| void addRect(const FloatRect& rect) |
| { |
| m_quads.append(m_geometryMap.absoluteRect(rect)); |
| } |
| private: |
| Vector<FloatQuad>& m_quads; |
| RenderGeometryMap m_geometryMap; |
| }; |
| |
| } // unnamed namespace |
| |
| void RenderInline::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const |
| { |
| absoluteQuadsIgnoringContinuation({ }, quads, wasFixed); |
| if (continuation()) |
| collectAbsoluteQuadsForContinuation(quads, wasFixed); |
| } |
| |
| void RenderInline::absoluteQuadsIgnoringContinuation(const FloatRect&, Vector<FloatQuad>& quads, bool*) const |
| { |
| AbsoluteQuadsGeneratorContext context(this, quads); |
| generateLineBoxRects(context); |
| } |
| |
| #if PLATFORM(IOS_FAMILY) |
| void RenderInline::absoluteQuadsForSelection(Vector<FloatQuad>& quads) const |
| { |
| AbsoluteQuadsGeneratorContext context(this, quads); |
| generateLineBoxRects(context); |
| } |
| #endif |
| |
| LayoutUnit RenderInline::offsetLeft() const |
| { |
| return adjustedPositionRelativeToOffsetParent(firstInlineBoxTopLeft()).x(); |
| } |
| |
| LayoutUnit RenderInline::offsetTop() const |
| { |
| return adjustedPositionRelativeToOffsetParent(firstInlineBoxTopLeft()).y(); |
| } |
| |
| LayoutPoint RenderInline::firstInlineBoxTopLeft() const |
| { |
| if (auto* lineLayout = LayoutIntegration::LineLayout::containing(*this)) |
| return lineLayout->firstInlineBoxRect(*this).location(); |
| if (auto* inlineBox = firstLegacyInlineBox()) |
| return flooredLayoutPoint(inlineBox->locationIncludingFlipping()); |
| return { }; |
| } |
| |
| static LayoutUnit computeMargin(const RenderInline* renderer, const Style::MarginEdge& margin, const Style::ZoomFactor& zoomFactor) |
| { |
| return Style::evaluateMinimum<LayoutUnit>(margin, [&] ALWAYS_INLINE_LAMBDA { |
| return std::max<LayoutUnit>(0, renderer->containingBlock()->contentBoxLogicalWidth()); |
| }, zoomFactor); |
| } |
| |
| LayoutUnit RenderInline::marginLeft() const |
| { |
| return computeMargin(this, style().marginLeft(), style().usedZoomForLength()); |
| } |
| |
| LayoutUnit RenderInline::marginRight() const |
| { |
| return computeMargin(this, style().marginRight(), style().usedZoomForLength()); |
| } |
| |
| LayoutUnit RenderInline::marginTop() const |
| { |
| return computeMargin(this, style().marginTop(), style().usedZoomForLength()); |
| } |
| |
| LayoutUnit RenderInline::marginBottom() const |
| { |
| return computeMargin(this, style().marginBottom(), style().usedZoomForLength()); |
| } |
| |
| LayoutUnit RenderInline::marginStart(const WritingMode writingMode) const |
| { |
| return computeMargin(this, style().marginStart(writingMode), style().usedZoomForLength()); |
| } |
| |
| LayoutUnit RenderInline::marginEnd(const WritingMode writingMode) const |
| { |
| return computeMargin(this, style().marginEnd(writingMode), style().usedZoomForLength()); |
| } |
| |
| LayoutUnit RenderInline::marginBefore(const WritingMode writingMode) const |
| { |
| return computeMargin(this, style().marginBefore(writingMode), style().usedZoomForLength()); |
| } |
| |
| LayoutUnit RenderInline::marginAfter(const WritingMode writingMode) const |
| { |
| return computeMargin(this, style().marginAfter(writingMode), style().usedZoomForLength()); |
| } |
| |
| ASCIILiteral RenderInline::renderName() const |
| { |
| if (isRelativelyPositioned()) |
| return "RenderInline (relative positioned)"_s; |
| if (isStickilyPositioned()) |
| return "RenderInline (sticky positioned)"_s; |
| // FIXME: Temporary hack while the new generated content system is being implemented. |
| if (isPseudoElement()) |
| return "RenderInline (generated)"_s; |
| if (isAnonymous()) |
| return "RenderInline (generated)"_s; |
| return "RenderInline"_s; |
| } |
| |
| bool RenderInline::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, |
| const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction) |
| { |
| ASSERT(layer()); |
| if (auto* lineLayout = LayoutIntegration::LineLayout::containing(*this)) |
| return lineLayout->hitTest(request, result, locationInContainer, accumulatedOffset, hitTestAction, this); |
| return false; |
| } |
| |
| PositionWithAffinity RenderInline::positionForPoint(const LayoutPoint& point, HitTestSource source, const RenderFragmentContainer* fragment) |
| { |
| auto& containingBlock = *this->containingBlock(); |
| |
| if (auto* continuation = this->continuation()) { |
| // Translate the coords from the pre-anonymous block to the post-anonymous block. |
| LayoutPoint parentBlockPoint = containingBlock.location() + point; |
| while (continuation) { |
| RenderBlock* currentBlock = continuation->isInline() ? continuation->containingBlock() : downcast<RenderBlock>(continuation); |
| if (continuation->isInline() || continuation->firstChild()) |
| return continuation->positionForPoint(parentBlockPoint - currentBlock->locationOffset(), source, fragment); |
| continuation = continuation->inlineContinuation(); |
| } |
| return RenderBoxModelObject::positionForPoint(point, source, fragment); |
| } |
| |
| return containingBlock.positionForPoint(point, source, fragment); |
| } |
| |
| LayoutUnit RenderInline::innerPaddingBoxWidth() const |
| { |
| auto firstInlineBoxPaddingBoxLeft = LayoutUnit { }; |
| auto lastInlineBoxPaddingBoxRight = LayoutUnit { }; |
| |
| if (LayoutIntegration::LineLayout::containing(*this)) { |
| if (auto inlineBox = InlineIterator::lineLeftmostInlineBoxFor(*this)) { |
| if (writingMode().isBidiLTR()) { |
| firstInlineBoxPaddingBoxLeft = inlineBox->logicalLeftIgnoringInlineDirection() + borderStart(); |
| for (; inlineBox->nextInlineBoxLineRightward(); inlineBox.traverseInlineBoxLineRightward()) { } |
| ASSERT(inlineBox); |
| lastInlineBoxPaddingBoxRight = inlineBox->logicalRightIgnoringInlineDirection() - borderEnd(); |
| } else { |
| lastInlineBoxPaddingBoxRight = inlineBox->logicalRightIgnoringInlineDirection() - borderStart(); |
| for (; inlineBox->nextInlineBoxLineRightward(); inlineBox.traverseInlineBoxLineRightward()) { } |
| ASSERT(inlineBox); |
| firstInlineBoxPaddingBoxLeft = inlineBox->logicalLeftIgnoringInlineDirection() + borderEnd(); |
| } |
| return std::max(0_lu, lastInlineBoxPaddingBoxRight - firstInlineBoxPaddingBoxLeft); |
| } |
| return { }; |
| } |
| |
| auto* firstInlineBox = firstLegacyInlineBox(); |
| auto* lastInlineBox = lastLegacyInlineBox(); |
| if (!firstInlineBox || !lastInlineBox) |
| return { }; |
| |
| if (writingMode().isBidiLTR()) { |
| firstInlineBoxPaddingBoxLeft = firstInlineBox->logicalLeft(); |
| lastInlineBoxPaddingBoxRight = lastInlineBox->logicalRight(); |
| } else { |
| lastInlineBoxPaddingBoxRight = firstInlineBox->logicalRight(); |
| firstInlineBoxPaddingBoxLeft = lastInlineBox->logicalLeft(); |
| } |
| return std::max(0_lu, lastInlineBoxPaddingBoxRight - firstInlineBoxPaddingBoxLeft); |
| } |
| |
| LayoutUnit RenderInline::innerPaddingBoxHeight() const |
| { |
| auto innerPaddingBoxLogicalHeight = LayoutUnit { isHorizontalWritingMode() ? linesBoundingBox().height() : linesBoundingBox().width() }; |
| innerPaddingBoxLogicalHeight -= (borderBefore() + borderAfter()); |
| return innerPaddingBoxLogicalHeight; |
| } |
| |
| IntRect RenderInline::linesBoundingBox() const |
| { |
| if (auto* layout = LayoutIntegration::LineLayout::containing(*this)) { |
| if (!layoutBox() || !layout->contains(*this)) { |
| // Repaint may be issued on subtrees during content mutation with newly inserted renderers |
| // (or we just forgot to initiate layout before querying geometry on stale content after moving inline boxes between blocks). |
| ASSERT(needsLayout()); |
| return { }; |
| } |
| if (isRenderSVGInline()) { |
| // FIXME: Always build the bounding box like this. LineLayouyt::enclosingBorderBoxRectFor does not include |
| // any post-layout box adjustments. |
| FloatRect result; |
| for (auto box = InlineIterator::lineLeftmostInlineBoxFor(*this); box; box.traverseInlineBoxLineRightward()) { |
| auto rect = box->visualRectIgnoringBlockDirection(); |
| result.unite(rect); |
| } |
| return enclosingIntRect(result); |
| } |
| return enclosingIntRect(layout->enclosingBorderBoxRectFor(*this)); |
| } |
| |
| // See <rdar://problem/5289721>, for an unknown reason the linked list here is sometimes inconsistent, first is non-zero and last is zero. We have been |
| // unable to reproduce this at all (and consequently unable to figure ot why this is happening). The assert will hopefully catch the problem in debug |
| // builds and help us someday figure out why. We also put in a redundant check of lastLineBox() to avoid the crash for now. |
| ASSERT(!firstLegacyInlineBox() == !lastLegacyInlineBox()); // Either both are null or both exist. |
| IntRect result; |
| if (firstLegacyInlineBox() && lastLegacyInlineBox()) { |
| // Return the width of the minimal left side and the maximal right side. |
| float logicalLeftSide = 0; |
| float logicalRightSide = 0; |
| for (auto* curr = firstLegacyInlineBox(); curr; curr = curr->nextLineBox()) { |
| if (curr == firstLegacyInlineBox() || curr->logicalLeft() < logicalLeftSide) |
| logicalLeftSide = curr->logicalLeft(); |
| if (curr == firstLegacyInlineBox() || curr->logicalRight() > logicalRightSide) |
| logicalRightSide = curr->logicalRight(); |
| } |
| |
| bool isHorizontal = writingMode().isHorizontal(); |
| |
| float x = isHorizontal ? logicalLeftSide : firstLegacyInlineBox()->x(); |
| float y = isHorizontal ? firstLegacyInlineBox()->y() : logicalLeftSide; |
| float width = isHorizontal ? logicalRightSide - logicalLeftSide : lastLegacyInlineBox()->logicalBottom() - x; |
| float height = isHorizontal ? lastLegacyInlineBox()->logicalBottom() - y : logicalRightSide - logicalLeftSide; |
| result = enclosingIntRect(FloatRect(x, y, width, height)); |
| } |
| |
| return result; |
| } |
| |
| LayoutRect RenderInline::linesVisualOverflowBoundingBox() const |
| { |
| if (auto* layout = LayoutIntegration::LineLayout::containing(*this)) { |
| if (!layoutBox()) { |
| // Repaint may be issued on subtrees during content mutation with newly inserted renderers. |
| ASSERT(needsLayout()); |
| return { }; |
| } |
| return layout->inkOverflowBoundingBoxRectFor(*this); |
| } |
| |
| if (!firstLegacyInlineBox() || !lastLegacyInlineBox()) |
| return { }; |
| |
| // Return the width of the minimal left side and the maximal right side. |
| LayoutUnit logicalLeftSide = LayoutUnit::max(); |
| LayoutUnit logicalRightSide = LayoutUnit::min(); |
| for (auto* curr = firstLegacyInlineBox(); curr; curr = curr->nextLineBox()) { |
| logicalLeftSide = std::min(logicalLeftSide, curr->logicalLeftVisualOverflow()); |
| logicalRightSide = std::max(logicalRightSide, curr->logicalRightVisualOverflow()); |
| } |
| |
| const LegacyRootInlineBox& firstRootBox = firstLegacyInlineBox()->root(); |
| const LegacyRootInlineBox& lastRootBox = lastLegacyInlineBox()->root(); |
| |
| LayoutUnit logicalTop = firstLegacyInlineBox()->logicalTopVisualOverflow(firstRootBox.lineTop()); |
| LayoutUnit logicalWidth = logicalRightSide - logicalLeftSide; |
| LayoutUnit logicalHeight = lastLegacyInlineBox()->logicalBottomVisualOverflow(lastRootBox.lineBottom()) - logicalTop; |
| |
| LayoutRect rect(logicalLeftSide, logicalTop, logicalWidth, logicalHeight); |
| if (!writingMode().isHorizontal()) |
| rect = rect.transposedRect(); |
| return rect; |
| } |
| |
| LayoutRect RenderInline::clippedOverflowRect(const RenderLayerModelObject* repaintContainer, VisibleRectContext context) const |
| { |
| // Only first-letter renderers are allowed in here during layout. They mutate the tree triggering repaints. |
| #ifndef NDEBUG |
| auto insideSelfPaintingInlineBox = [&] { |
| if (hasSelfPaintingLayer()) |
| return true; |
| auto* containingBlock = this->containingBlock(); |
| for (auto* ancestor = this->parent(); ancestor && ancestor != containingBlock; ancestor = ancestor->parent()) { |
| if (ancestor->hasSelfPaintingLayer()) |
| return true; |
| } |
| return false; |
| }; |
| ASSERT_UNUSED(insideSelfPaintingInlineBox, !view().frameView().layoutContext().isPaintOffsetCacheEnabled() || style().pseudoElementType() == PseudoElementType::FirstLetter || insideSelfPaintingInlineBox()); |
| #endif |
| |
| auto knownEmpty = [&] { |
| if (firstLegacyInlineBox()) |
| return false; |
| if (continuation()) |
| return false; |
| if (LayoutIntegration::LineLayout::containing(*this)) |
| return false; |
| return true; |
| }; |
| |
| if (knownEmpty()) |
| return LayoutRect(); |
| |
| auto repaintRect = linesVisualOverflowBoundingBox(); |
| bool hitRepaintContainer = false; |
| |
| // We need to add in the in-flow position offsets of any inlines (including us) up to our |
| // containing block. |
| RenderBlock* containingBlock = this->containingBlock(); |
| for (const RenderElement* inlineFlow = this; inlineFlow; inlineFlow = inlineFlow->parent()) { |
| auto* renderInline = dynamicDowncast<RenderInline>(*inlineFlow); |
| if (!renderInline || inlineFlow == containingBlock) |
| break; |
| if (inlineFlow == repaintContainer) { |
| hitRepaintContainer = true; |
| break; |
| } |
| if (inlineFlow->style().hasInFlowPosition() && inlineFlow->hasLayer()) |
| repaintRect.move(renderInline->layer()->offsetForInFlowPosition()); |
| } |
| |
| LayoutUnit outlineSize { style().usedOutlineSize() }; |
| repaintRect.inflate(outlineSize); |
| |
| if (hitRepaintContainer || !containingBlock) |
| return repaintRect; |
| |
| auto rects = RepaintRects { repaintRect }; |
| |
| if (containingBlock->hasNonVisibleOverflow()) |
| containingBlock->applyCachedClipAndScrollPosition(rects, repaintContainer, context); |
| |
| rects = containingBlock->computeRects(rects, repaintContainer, context); |
| repaintRect = rects.clippedOverflowRect; |
| |
| if (outlineSize) { |
| for (auto& child : childrenOfType<RenderElement>(*this)) |
| repaintRect.unite(child.rectWithOutlineForRepaint(repaintContainer, outlineSize)); |
| |
| if (RenderBoxModelObject* continuation = this->continuation()) { |
| if (!continuation->isInline() && continuation->parent()) |
| repaintRect.unite(continuation->rectWithOutlineForRepaint(repaintContainer, outlineSize)); |
| } |
| } |
| |
| return repaintRect; |
| } |
| |
| auto RenderInline::rectsForRepaintingAfterLayout(const RenderLayerModelObject* repaintContainer, RepaintOutlineBounds) const -> RepaintRects |
| { |
| // RepaintOutlineBounds is unused for inlines. |
| return { clippedOverflowRect(repaintContainer, visibleRectContextForRepaint()) }; |
| } |
| |
| LayoutRect RenderInline::rectWithOutlineForRepaint(const RenderLayerModelObject* repaintContainer, LayoutUnit outlineWidth) const |
| { |
| LayoutRect r(RenderBoxModelObject::rectWithOutlineForRepaint(repaintContainer, outlineWidth)); |
| for (auto& child : childrenOfType<RenderElement>(*this)) |
| r.unite(child.rectWithOutlineForRepaint(repaintContainer, outlineWidth)); |
| return r; |
| } |
| |
| auto RenderInline::computeVisibleRectsUsingPaintOffset(const RepaintRects& rects) const -> RepaintRects |
| { |
| auto adjustedRects = rects; |
| auto* layoutState = view().frameView().layoutContext().layoutState(); |
| if (style().hasInFlowPosition() && layer()) |
| adjustedRects.move(layer()->offsetForInFlowPosition()); |
| adjustedRects.move(layoutState->paintOffset()); |
| if (layoutState->isClipped()) |
| adjustedRects.clippedOverflowRect.intersect(layoutState->clipRect()); |
| return adjustedRects; |
| } |
| |
| auto RenderInline::computeVisibleRectsInContainer(const RepaintRects& rects, const RenderLayerModelObject* container, VisibleRectContext context) const -> std::optional<RepaintRects> |
| { |
| // Repaint offset cache is only valid for root-relative repainting |
| if (view().frameView().layoutContext().isPaintOffsetCacheEnabled() && !container && !context.options.contains(VisibleRectContext::Option::UseEdgeInclusiveIntersection)) |
| return computeVisibleRectsUsingPaintOffset(rects); |
| |
| if (container == this) |
| return rects; |
| |
| bool containerSkipped; |
| RenderElement* localContainer = this->container(container, containerSkipped); |
| if (!localContainer) |
| return rects; |
| |
| auto adjustedRects = rects; |
| if (style().hasInFlowPosition() && layer()) { |
| // Apply the in-flow position offset when invalidating a rectangle. The layer |
| // is translated, but the render box isn't, so we need to do this to get the |
| // right dirty rect. Since this is called from RenderObject::setStyle, the relative or sticky position |
| // flag on the RenderObject has been cleared, so use the one on the style(). |
| auto offsetForInFlowPosition = layer()->offsetForInFlowPosition(); |
| adjustedRects.move(offsetForInFlowPosition); |
| } |
| |
| if (localContainer->hasNonVisibleOverflow()) { |
| // FIXME: Respect the value of context.options. |
| SetForScope change(context.options, context.options | VisibleRectContext::Option::ApplyCompositedContainerScrolls); |
| bool isEmpty = !downcast<RenderLayerModelObject>(*localContainer).applyCachedClipAndScrollPosition(adjustedRects, container, context); |
| if (isEmpty) { |
| if (context.options.contains(VisibleRectContext::Option::UseEdgeInclusiveIntersection)) |
| return std::nullopt; |
| return adjustedRects; |
| } |
| } |
| |
| if (containerSkipped) { |
| // If the repaintContainer is below o, then we need to map the rect into repaintContainer's coordinates. |
| auto containerOffset = container->offsetFromAncestorContainer(*localContainer); |
| adjustedRects.move(-containerOffset); |
| return adjustedRects; |
| } |
| |
| return localContainer->computeVisibleRectsInContainer(adjustedRects, container, context); |
| } |
| |
| LayoutSize RenderInline::offsetFromContainer(const RenderElement& container, const LayoutPoint&, bool* offsetDependsOnPoint) const |
| { |
| ASSERT(&container == this->container()); |
| |
| LayoutSize offset; |
| if (isInFlowPositioned()) |
| offset += offsetForInFlowPosition(); |
| |
| if (auto* box = dynamicDowncast<RenderBox>(container)) |
| offset -= toLayoutSize(box->scrollPosition()); |
| |
| if (offsetDependsOnPoint) |
| *offsetDependsOnPoint = (is<RenderBox>(container) && container.writingMode().isBlockFlipped()) || is<RenderFragmentedFlow>(container); |
| |
| return offset; |
| } |
| |
| void RenderInline::mapLocalToContainer(const RenderLayerModelObject* ancestorContainer, TransformState& transformState, OptionSet<MapCoordinatesMode> mode, bool* wasFixed) const |
| { |
| if (ancestorContainer == this) |
| return; |
| |
| if (view().frameView().layoutContext().isPaintOffsetCacheEnabled() && !ancestorContainer) { |
| auto* layoutState = view().frameView().layoutContext().layoutState(); |
| LayoutSize offset = layoutState->paintOffset(); |
| if (style().hasInFlowPosition() && layer()) |
| offset += layer()->offsetForInFlowPosition(); |
| transformState.move(offset); |
| return; |
| } |
| |
| bool containerSkipped; |
| RenderElement* container = this->container(ancestorContainer, containerSkipped); |
| if (!container) |
| return; |
| |
| if (mode.contains(ApplyContainerFlip)) { |
| if (CheckedPtr box = dynamicDowncast<RenderBox>(*container)) { |
| if (container->writingMode().isBlockFlipped()) { |
| LayoutPoint centerPoint(transformState.mappedPoint()); |
| transformState.move(box->flipForWritingMode(centerPoint) - centerPoint); |
| } |
| mode.remove(ApplyContainerFlip); |
| } |
| } |
| |
| LayoutSize containerOffset = offsetFromContainer(*container, LayoutPoint(transformState.mappedPoint())); |
| |
| pushOntoTransformState(transformState, mode, ancestorContainer, container, containerOffset, containerSkipped); |
| if (containerSkipped) |
| return; |
| |
| container->mapLocalToContainer(ancestorContainer, transformState, mode, wasFixed); |
| } |
| |
| const RenderElement* RenderInline::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const |
| { |
| ASSERT(ancestorToStopAt != this); |
| |
| bool ancestorSkipped; |
| RenderElement* container = this->container(ancestorToStopAt, ancestorSkipped); |
| if (!container) |
| return nullptr; |
| |
| pushOntoGeometryMap(geometryMap, ancestorToStopAt, container, ancestorSkipped); |
| |
| return ancestorSkipped ? ancestorToStopAt : container; |
| } |
| |
| void RenderInline::updateHitTestResult(HitTestResult& result, const LayoutPoint& point) const |
| { |
| if (result.innerNode()) |
| return; |
| |
| LayoutPoint localPoint(point); |
| if (RefPtr node = nodeForHitTest()) { |
| if (isContinuation()) { |
| // We're in the continuation of a split inline. Adjust our local point to be in the coordinate space |
| // of the principal renderer's containing block. This will end up being the innerNonSharedNode. |
| auto* firstBlock = node->renderer()->containingBlock(); |
| localPoint.moveBy(containingBlock()->location() - firstBlock->locationOffset()); |
| } |
| |
| result.setInnerNode(node.get()); |
| if (!result.innerNonSharedNode()) |
| result.setInnerNonSharedNode(node.get()); |
| result.setPseudoElementIdentifier(style().pseudoElementIdentifier()); |
| result.setLocalPoint(localPoint); |
| } |
| } |
| |
| void RenderInline::deleteLegacyLineBoxes() |
| { |
| m_legacyLineBoxes.deleteLineBoxes(); |
| } |
| |
| std::unique_ptr<LegacyInlineFlowBox> RenderInline::createInlineFlowBox() |
| { |
| return makeUnique<LegacyInlineFlowBox>(*this); |
| } |
| |
| LegacyInlineFlowBox* RenderInline::createAndAppendInlineFlowBox() |
| { |
| auto newFlowBox = createInlineFlowBox(); |
| auto flowBox = newFlowBox.get(); |
| m_legacyLineBoxes.appendLineBox(WTF::move(newFlowBox)); |
| return flowBox; |
| } |
| |
| LayoutSize RenderInline::offsetForInFlowPositionedInline(const RenderBox* child) const |
| { |
| // FIXME: This function isn't right with mixed writing modes. |
| if (!isInFlowPositioned()) { |
| ASSERT_NOT_REACHED(); |
| return { }; |
| } |
| |
| if (!hasLayer()) { |
| // It looks like we are inflow positioned but no layer created yet. It essentially means we don't have an position offset yet. |
| return { }; |
| } |
| |
| // When we have an enclosing relpositioned inline, we need to add in the offset of the first line |
| // box from the rest of the content, but only in the cases where we know we're positioned |
| // relative to the inline itself. |
| auto inlinePosition = layer()->staticInlinePosition(); |
| auto blockPosition = layer()->staticBlockPosition(); |
| if (auto* inlineBox = firstLegacyInlineBox()) { |
| inlinePosition = LayoutUnit::fromFloatRound(inlineBox->logicalLeft()); |
| blockPosition = inlineBox->logicalTop(); |
| } else if (LayoutIntegration::LineLayout::containing(*this)) { |
| if (!layoutBox()) { |
| // Repaint may be issued on subtrees during content mutation with newly inserted renderers. |
| ASSERT(needsLayout()); |
| return { }; |
| } |
| if (auto inlineBox = InlineIterator::lineLeftmostInlineBoxFor(*this)) { |
| inlinePosition = LayoutUnit::fromFloatRound(inlineBox->logicalLeftIgnoringInlineDirection()); |
| blockPosition = inlineBox->logicalTop(); |
| } else if (auto* blockContainer = containingBlock()) { |
| // This must be a block with no in-flow content e.g. <div><span><abs pos box></span></div> where we don't construct any display box at all. |
| auto contentBoxLocation = blockContainer->contentBoxLocation(); |
| inlinePosition = contentBoxLocation.x(); |
| blockPosition = contentBoxLocation.y(); |
| } |
| } |
| |
| // Per http://www.w3.org/TR/CSS2/visudet.html#abs-non-replaced-width an absolute positioned box with a static position |
| // should locate itself as though it is a normal flow box in relation to its containing block. |
| LayoutSize logicalOffset; |
| if (!child->style().hasStaticInlinePosition(writingMode().isHorizontal()) |
| || !child->style().positionArea().isNone() || child->style().justifySelf().isAnchorCenter()) |
| logicalOffset.setWidth(inlinePosition); |
| |
| if (!child->style().hasStaticBlockPosition(writingMode().isHorizontal()) |
| || !child->style().positionArea().isNone() || child->style().alignSelf().isAnchorCenter()) |
| logicalOffset.setHeight(blockPosition); |
| |
| return writingMode().isHorizontal() ? logicalOffset : logicalOffset.transposedSize(); |
| } |
| |
| void RenderInline::imageChanged(WrappedImagePtr image, const IntRect*) |
| { |
| if (!parent()) |
| return; |
| |
| bool isNonEmpty; |
| RefPtr styleImage = Style::findLayerUsedImage(style().backgroundLayers(), image, isNonEmpty); |
| if (styleImage && isNonEmpty) { |
| if (auto styleable = Styleable::fromRenderer(*this)) |
| protectedDocument()->didLoadImage(styleable->protectedElement().get(), styleImage->cachedImage()); |
| } |
| |
| // FIXME: We can do better. |
| repaint(); |
| } |
| |
| namespace { |
| class AbsoluteRectsIgnoringEmptyGeneratorContext : public AbsoluteRectsGeneratorContext { |
| public: |
| AbsoluteRectsIgnoringEmptyGeneratorContext(Vector<LayoutRect>& rects, const LayoutPoint& accumulatedOffset) |
| : AbsoluteRectsGeneratorContext(rects, accumulatedOffset) { } |
| |
| void addRect(const FloatRect& rect) |
| { |
| if (!rect.isEmpty()) |
| AbsoluteRectsGeneratorContext::addRect(rect); |
| } |
| }; |
| } // unnamed namespace |
| |
| void RenderInline::collectLineBoxRects(Vector<LayoutRect>& rects, const LayoutPoint& additionalOffset) const |
| { |
| AbsoluteRectsIgnoringEmptyGeneratorContext context(rects, additionalOffset); |
| generateLineBoxRects(context); |
| } |
| |
| bool isEmptyInline(const RenderInline& renderer) |
| { |
| for (auto& current : childrenOfType<RenderObject>(renderer)) { |
| if (current.isFloatingOrOutOfFlowPositioned()) |
| continue; |
| if (auto* text = dynamicDowncast<RenderText>(current)) { |
| if (!text->containsOnlyCollapsibleWhitespace()) |
| return false; |
| continue; |
| } |
| auto* renderInline = dynamicDowncast<RenderInline>(current); |
| if (!renderInline || !isEmptyInline(*renderInline)) |
| return false; |
| } |
| return true; |
| } |
| |
| bool RenderInline::requiresLayer() const |
| { |
| return isInFlowPositioned() |
| || createsGroup() |
| || hasClipPath() |
| || style().willChange().canCreateStackingContext() |
| || hasRunningAcceleratedAnimations() |
| || requiresRenderingConsolidationForViewTransition(); |
| } |
| |
| } // namespace WebCore |
