blob: 737210baf6eb6a30cd286955edd750f0e5941763 [file] [log] [blame]
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "RenderInline.h"
#include "Chrome.h"
#include "FloatQuad.h"
#include "FrameSelection.h"
#include "GraphicsContext.h"
#include "HitTestResult.h"
#include "InlineElementBox.h"
#include "InlineTextBox.h"
#include "RenderBlock.h"
#include "RenderChildIterator.h"
#include "RenderFragmentedFlow.h"
#include "RenderFullScreen.h"
#include "RenderGeometryMap.h"
#include "RenderIterator.h"
#include "RenderLayer.h"
#include "RenderLayoutState.h"
#include "RenderLineBreak.h"
#include "RenderListMarker.h"
#include "RenderTable.h"
#include "RenderTheme.h"
#include "RenderTreeBuilder.h"
#include "RenderView.h"
#include "Settings.h"
#include "StyleInheritedData.h"
#include "TransformState.h"
#include "VisiblePosition.h"
#include <wtf/IsoMallocInlines.h>
#include <wtf/SetForScope.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(RenderInline);
RenderInline::RenderInline(Element& element, RenderStyle&& style)
: RenderBoxModelObject(element, WTFMove(style), RenderInlineFlag)
{
setChildrenInline(true);
}
RenderInline::RenderInline(Document& document, RenderStyle&& style)
: RenderBoxModelObject(document, WTFMove(style), RenderInlineFlag)
{
setChildrenInline(true);
}
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().visibility() == 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 (firstLineBox()) {
// 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 (firstLineBox()->parent()) {
for (auto* box = firstLineBox(); box; box = box->nextLineBox())
box->removeFromParent();
}
} else if (parent())
parent()->dirtyLinesFromChangedChild(*this);
}
m_lineBoxes.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;
if (!is<RenderBlock>(*box))
continue;
RenderBlock& block = downcast<RenderBlock>(*box);
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(WTFMove(blockStyle));
}
}
void RenderInline::styleWillChange(StyleDifference 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.
if (canContainAbsolutelyPositionedObjects() && newStyle.position() == PositionType::Static) {
auto* container = containingBlockForAbsolutePosition();
if (container && !container->canContainAbsolutelyPositionedObjects())
container->removePositionedObjects(nullptr, NewContainingBlock);
}
}
void RenderInline::styleDidChange(StyleDifference 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);
}
if (!alwaysCreateLineBoxes()) {
bool alwaysCreateLineBoxes = hasSelfPaintingLayer() || hasVisibleBoxDecorations() || newStyle.hasBorder() || newStyle.hasPadding() || newStyle.hasMargin() || hasOutline();
if (oldStyle && alwaysCreateLineBoxes) {
dirtyLineBoxes(false);
setNeedsLayout();
}
setRenderInlineAlwaysCreatesLineBoxes(alwaysCreateLineBoxes);
}
}
void RenderInline::updateAlwaysCreateLineBoxes(bool fullLayout)
{
// Once we have been tainted once, just assume it will happen again. This way effects like hover highlighting that change the
// background color will only cause a layout on the first rollover.
if (alwaysCreateLineBoxes())
return;
auto* parentStyle = &parent()->style();
RenderInline* parentRenderInline = is<RenderInline>(*parent()) ? downcast<RenderInline>(parent()) : nullptr;
bool checkFonts = document().inNoQuirksMode();
bool alwaysCreateLineBoxes = (parentRenderInline && parentRenderInline->alwaysCreateLineBoxes())
|| (parentRenderInline && parentStyle->verticalAlign() != VerticalAlign::Baseline)
|| style().verticalAlign() != VerticalAlign::Baseline
|| style().textEmphasisMark() != TextEmphasisMark::None
|| (checkFonts && (!parentStyle->fontCascade().fontMetrics().hasIdenticalAscentDescentAndLineGap(style().fontCascade().fontMetrics())
|| parentStyle->lineHeight() != style().lineHeight()));
if (!alwaysCreateLineBoxes && checkFonts && view().usesFirstLineRules()) {
// Have to check the first line style as well.
parentStyle = &parent()->firstLineStyle();
auto& childStyle = firstLineStyle();
alwaysCreateLineBoxes = !parentStyle->fontCascade().fontMetrics().hasIdenticalAscentDescentAndLineGap(childStyle.fontCascade().fontMetrics())
|| childStyle.verticalAlign() != VerticalAlign::Baseline
|| parentStyle->lineHeight() != childStyle.lineHeight();
}
if (alwaysCreateLineBoxes) {
if (!fullLayout)
dirtyLineBoxes(false);
setAlwaysCreateLineBoxes();
}
}
LayoutRect RenderInline::localCaretRect(InlineBox* inlineBox, unsigned, LayoutUnit* extraWidthToEndOfLine)
{
if (firstChild()) {
// This condition is possible if the RenderInline is at an editing boundary,
// i.e. the VisiblePosition is:
// <RenderInline editingBoundary=true>|<RenderText> </RenderText></RenderInline>
// FIXME: need to figure out how to make this return a valid rect, note that
// there are no line boxes created in the above case.
return LayoutRect();
}
ASSERT_UNUSED(inlineBox, !inlineBox);
if (extraWidthToEndOfLine)
*extraWidthToEndOfLine = 0;
LayoutRect caretRect = localCaretRectForEmptyElement(horizontalBorderAndPaddingExtent(), 0);
if (InlineBox* firstBox = firstLineBox())
caretRect.moveBy(LayoutPoint(firstBox->topLeft()));
return caretRect;
}
void RenderInline::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
m_lineBoxes.paint(this, paintInfo, paintOffset);
}
template<typename GeneratorContext>
void RenderInline::generateLineBoxRects(GeneratorContext& context) const
{
if (!alwaysCreateLineBoxes())
generateCulledLineBoxRects(context, this);
else if (InlineFlowBox* curr = firstLineBox()) {
for (; curr; curr = curr->nextLineBox())
context.addRect(FloatRect(curr->topLeft(), curr->size()));
} else
context.addRect(FloatRect());
}
template<typename GeneratorContext>
void RenderInline::generateCulledLineBoxRects(GeneratorContext& context, const RenderInline* container) const
{
if (!culledInlineFirstLineBox()) {
context.addRect(FloatRect());
return;
}
bool isHorizontal = style().isHorizontalWritingMode();
for (auto& current : childrenOfType<RenderObject>(*this)) {
if (current.isFloatingOrOutOfFlowPositioned())
continue;
// We want to get the margin box in the inline direction, and then use our font ascent/descent in the block
// direction (aligned to the root box's baseline).
if (is<RenderBox>(current)) {
auto& renderBox = downcast<RenderBox>(current);
if (renderBox.inlineBoxWrapper()) {
const RootInlineBox& rootBox = renderBox.inlineBoxWrapper()->root();
const RenderStyle& containerStyle = rootBox.isFirstLine() ? container->firstLineStyle() : container->style();
int logicalTop = rootBox.logicalTop() + (rootBox.lineStyle().fontCascade().fontMetrics().ascent() - containerStyle.fontCascade().fontMetrics().ascent());
int logicalHeight = containerStyle.fontCascade().fontMetrics().height();
if (isHorizontal)
context.addRect(FloatRect(renderBox.inlineBoxWrapper()->x() - renderBox.marginLeft(), logicalTop, renderBox.width() + renderBox.horizontalMarginExtent(), logicalHeight));
else
context.addRect(FloatRect(logicalTop, renderBox.inlineBoxWrapper()->y() - renderBox.marginTop(), logicalHeight, renderBox.height() + renderBox.verticalMarginExtent()));
}
} else if (is<RenderInline>(current)) {
// If the child doesn't need line boxes either, then we can recur.
auto& renderInline = downcast<RenderInline>(current);
if (!renderInline.alwaysCreateLineBoxes())
renderInline.generateCulledLineBoxRects(context, container);
else {
for (InlineFlowBox* childLine = renderInline.firstLineBox(); childLine; childLine = childLine->nextLineBox()) {
const RootInlineBox& rootBox = childLine->root();
const RenderStyle& containerStyle = rootBox.isFirstLine() ? container->firstLineStyle() : container->style();
int logicalTop = rootBox.logicalTop() + (rootBox.lineStyle().fontCascade().fontMetrics().ascent() - containerStyle.fontCascade().fontMetrics().ascent());
int logicalHeight = containerStyle.fontMetrics().height();
if (isHorizontal) {
context.addRect(FloatRect(childLine->x() - childLine->marginLogicalLeft(),
logicalTop,
childLine->logicalWidth() + childLine->marginLogicalLeft() + childLine->marginLogicalRight(),
logicalHeight));
} else {
context.addRect(FloatRect(logicalTop,
childLine->y() - childLine->marginLogicalLeft(),
logicalHeight,
childLine->logicalWidth() + childLine->marginLogicalLeft() + childLine->marginLogicalRight()));
}
}
}
} else if (is<RenderText>(current)) {
auto& currText = downcast<RenderText>(current);
for (InlineTextBox* childText = currText.firstTextBox(); childText; childText = childText->nextTextBox()) {
const RootInlineBox& rootBox = childText->root();
const RenderStyle& containerStyle = rootBox.isFirstLine() ? container->firstLineStyle() : container->style();
int logicalTop = rootBox.logicalTop() + (rootBox.lineStyle().fontCascade().fontMetrics().ascent() - containerStyle.fontCascade().fontMetrics().ascent());
int logicalHeight = containerStyle.fontCascade().fontMetrics().height();
if (isHorizontal)
context.addRect(FloatRect(childText->x(), logicalTop, childText->logicalWidth(), logicalHeight));
else
context.addRect(FloatRect(logicalTop, childText->y(), logicalHeight, childText->logicalWidth()));
}
} else if (is<RenderLineBreak>(current)) {
if (auto* inlineBox = downcast<RenderLineBreak>(current).inlineBoxWrapper()) {
// FIXME: This could use a helper to share these with text path.
const RootInlineBox& rootBox = inlineBox->root();
const RenderStyle& containerStyle = rootBox.isFirstLine() ? container->firstLineStyle() : container->style();
int logicalTop = rootBox.logicalTop() + (rootBox.lineStyle().fontCascade().fontMetrics().ascent() - containerStyle.fontCascade().fontMetrics().ascent());
int logicalHeight = containerStyle.fontMetrics().height();
if (isHorizontal)
context.addRect(FloatRect(inlineBox->x(), logicalTop, inlineBox->logicalWidth(), logicalHeight));
else
context.addRect(FloatRect(logicalTop, inlineBox->y(), logicalHeight, inlineBox->logicalWidth()));
}
}
}
}
namespace {
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;
};
} // unnamed namespace
void RenderInline::absoluteRects(Vector<IntRect>& rects, const LayoutPoint& accumulatedOffset) const
{
Vector<LayoutRect> lineboxRects;
AbsoluteRectsGeneratorContext context(lineboxRects, accumulatedOffset);
generateLineBoxRects(context);
for (const auto& rect : lineboxRects)
rects.append(snappedIntRect(rect));
if (RenderBoxModelObject* continuation = this->continuation()) {
if (is<RenderBox>(*continuation)) {
auto& box = downcast<RenderBox>(*continuation);
continuation->absoluteRects(rects, toLayoutPoint(accumulatedOffset - containingBlock()->location() + box.locationOffset()));
} else
continuation->absoluteRects(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
{
LayoutPoint topLeft;
if (InlineBox* firstBox = firstLineBoxIncludingCulling())
topLeft = flooredLayoutPoint(firstBox->topLeft());
return adjustedPositionRelativeToOffsetParent(topLeft).x();
}
LayoutUnit RenderInline::offsetTop() const
{
LayoutPoint topLeft;
if (InlineBox* firstBox = firstLineBoxIncludingCulling())
topLeft = flooredLayoutPoint(firstBox->topLeft());
return adjustedPositionRelativeToOffsetParent(topLeft).y();
}
static LayoutUnit computeMargin(const RenderInline* renderer, const Length& margin)
{
if (margin.isAuto())
return 0;
if (margin.isFixed())
return LayoutUnit(margin.value());
if (margin.isPercentOrCalculated())
return minimumValueForLength(margin, std::max<LayoutUnit>(0, renderer->containingBlock()->availableLogicalWidth()));
return 0;
}
LayoutUnit RenderInline::marginLeft() const
{
return computeMargin(this, style().marginLeft());
}
LayoutUnit RenderInline::marginRight() const
{
return computeMargin(this, style().marginRight());
}
LayoutUnit RenderInline::marginTop() const
{
return computeMargin(this, style().marginTop());
}
LayoutUnit RenderInline::marginBottom() const
{
return computeMargin(this, style().marginBottom());
}
LayoutUnit RenderInline::marginStart(const RenderStyle* otherStyle) const
{
return computeMargin(this, style().marginStartUsing(otherStyle ? otherStyle : &style()));
}
LayoutUnit RenderInline::marginEnd(const RenderStyle* otherStyle) const
{
return computeMargin(this, style().marginEndUsing(otherStyle ? otherStyle : &style()));
}
LayoutUnit RenderInline::marginBefore(const RenderStyle* otherStyle) const
{
return computeMargin(this, style().marginBeforeUsing(otherStyle ? otherStyle : &style()));
}
LayoutUnit RenderInline::marginAfter(const RenderStyle* otherStyle) const
{
return computeMargin(this, style().marginAfterUsing(otherStyle ? otherStyle : &style()));
}
const char* RenderInline::renderName() const
{
if (isRelativelyPositioned())
return "RenderInline (relative positioned)";
if (isStickilyPositioned())
return "RenderInline (sticky positioned)";
// FIXME: Temporary hack while the new generated content system is being implemented.
if (isPseudoElement())
return "RenderInline (generated)";
if (isAnonymous())
return "RenderInline (generated)";
return "RenderInline";
}
bool RenderInline::nodeAtPoint(const HitTestRequest& request, HitTestResult& result,
const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction)
{
return m_lineBoxes.hitTest(this, request, result, locationInContainer, accumulatedOffset, hitTestAction);
}
namespace {
class HitTestCulledInlinesGeneratorContext {
public:
HitTestCulledInlinesGeneratorContext(Region& region, const HitTestLocation& location)
: m_intersected(false)
, m_region(region)
, m_location(location)
{ }
void addRect(const FloatRect& rect)
{
m_intersected = m_intersected || m_location.intersects(rect);
m_region.unite(enclosingIntRect(rect));
}
bool intersected() const { return m_intersected; }
private:
bool m_intersected;
Region& m_region;
const HitTestLocation& m_location;
};
} // unnamed namespace
bool RenderInline::hitTestCulledInline(const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset)
{
ASSERT(result.isRectBasedTest() && !alwaysCreateLineBoxes());
if (!visibleToHitTesting())
return false;
HitTestLocation tmpLocation(locationInContainer, -toLayoutSize(accumulatedOffset));
Region regionResult;
HitTestCulledInlinesGeneratorContext context(regionResult, tmpLocation);
generateCulledLineBoxRects(context, this);
if (context.intersected()) {
updateHitTestResult(result, tmpLocation.point());
// We cannot use addNodeToListBasedTestResult to determine if we fully enclose the hit-test area
// because it can only handle rectangular targets.
result.addNodeToListBasedTestResult(element(), request, locationInContainer);
return regionResult.contains(tmpLocation.boundingBox());
}
return false;
}
VisiblePosition RenderInline::positionForPoint(const LayoutPoint& point, const RenderFragmentContainer* fragment)
{
// FIXME: Does not deal with relative or sticky positioned inlines (should it?)
RenderBlock& containingBlock = *this->containingBlock();
if (firstLineBox()) {
// This inline actually has a line box. We must have clicked in the border/padding of one of these boxes. We
// should try to find a result by asking our containing block.
return containingBlock.positionForPoint(point, fragment);
}
// Translate the coords from the pre-anonymous block to the post-anonymous block.
LayoutPoint parentBlockPoint = containingBlock.location() + point;
RenderBoxModelObject* continuation = this->continuation();
while (continuation) {
RenderBlock* currentBlock = continuation->isInline() ? continuation->containingBlock() : downcast<RenderBlock>(continuation);
if (continuation->isInline() || continuation->firstChild())
return continuation->positionForPoint(parentBlockPoint - currentBlock->locationOffset(), fragment);
continuation = continuation->inlineContinuation();
}
return RenderBoxModelObject::positionForPoint(point, fragment);
}
namespace {
class LinesBoundingBoxGeneratorContext {
public:
LinesBoundingBoxGeneratorContext(FloatRect& rect) : m_rect(rect) { }
void addRect(const FloatRect& rect)
{
m_rect.uniteIfNonZero(rect);
}
private:
FloatRect& m_rect;
};
} // unnamed namespace
IntRect RenderInline::linesBoundingBox() const
{
if (!alwaysCreateLineBoxes()) {
ASSERT(!firstLineBox());
FloatRect floatResult;
LinesBoundingBoxGeneratorContext context(floatResult);
generateCulledLineBoxRects(context, this);
return enclosingIntRect(floatResult);
}
IntRect result;
// 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(!firstLineBox() == !lastLineBox()); // Either both are null or both exist.
if (firstLineBox() && lastLineBox()) {
// Return the width of the minimal left side and the maximal right side.
float logicalLeftSide = 0;
float logicalRightSide = 0;
for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) {
if (curr == firstLineBox() || curr->logicalLeft() < logicalLeftSide)
logicalLeftSide = curr->logicalLeft();
if (curr == firstLineBox() || curr->logicalRight() > logicalRightSide)
logicalRightSide = curr->logicalRight();
}
bool isHorizontal = style().isHorizontalWritingMode();
float x = isHorizontal ? logicalLeftSide : firstLineBox()->x();
float y = isHorizontal ? firstLineBox()->y() : logicalLeftSide;
float width = isHorizontal ? logicalRightSide - logicalLeftSide : lastLineBox()->logicalBottom() - x;
float height = isHorizontal ? lastLineBox()->logicalBottom() - y : logicalRightSide - logicalLeftSide;
result = enclosingIntRect(FloatRect(x, y, width, height));
}
return result;
}
InlineBox* RenderInline::culledInlineFirstLineBox() const
{
for (auto& current : childrenOfType<RenderObject>(*this)) {
if (current.isFloatingOrOutOfFlowPositioned())
continue;
// We want to get the margin box in the inline direction, and then use our font ascent/descent in the block
// direction (aligned to the root box's baseline).
if (is<RenderBox>(current)) {
auto& renderBox = downcast<RenderBox>(current);
if (renderBox.inlineBoxWrapper())
return renderBox.inlineBoxWrapper();
} else if (is<RenderLineBreak>(current)) {
auto& renderBR = downcast<RenderLineBreak>(current);
if (renderBR.inlineBoxWrapper())
return renderBR.inlineBoxWrapper();
} else if (is<RenderInline>(current)) {
auto& renderInline = downcast<RenderInline>(current);
if (InlineBox* result = renderInline.firstLineBoxIncludingCulling())
return result;
} else if (is<RenderText>(current)) {
auto& renderText = downcast<RenderText>(current);
if (renderText.firstTextBox())
return renderText.firstTextBox();
}
}
return nullptr;
}
InlineBox* RenderInline::culledInlineLastLineBox() const
{
for (RenderObject* current = lastChild(); current; current = current->previousSibling()) {
if (current->isFloatingOrOutOfFlowPositioned())
continue;
// We want to get the margin box in the inline direction, and then use our font ascent/descent in the block
// direction (aligned to the root box's baseline).
if (is<RenderBox>(*current)) {
const auto& renderBox = downcast<RenderBox>(*current);
if (renderBox.inlineBoxWrapper())
return renderBox.inlineBoxWrapper();
} else if (is<RenderLineBreak>(*current)) {
RenderLineBreak& renderBR = downcast<RenderLineBreak>(*current);
if (renderBR.inlineBoxWrapper())
return renderBR.inlineBoxWrapper();
} else if (is<RenderInline>(*current)) {
RenderInline& renderInline = downcast<RenderInline>(*current);
if (InlineBox* result = renderInline.lastLineBoxIncludingCulling())
return result;
} else if (is<RenderText>(*current)) {
RenderText& renderText = downcast<RenderText>(*current);
if (renderText.lastTextBox())
return renderText.lastTextBox();
}
}
return nullptr;
}
LayoutRect RenderInline::culledInlineVisualOverflowBoundingBox() const
{
FloatRect floatResult;
LinesBoundingBoxGeneratorContext context(floatResult);
generateCulledLineBoxRects(context, this);
LayoutRect result(enclosingLayoutRect(floatResult));
bool isHorizontal = style().isHorizontalWritingMode();
for (auto& current : childrenOfType<RenderObject>(*this)) {
if (current.isFloatingOrOutOfFlowPositioned())
continue;
// For overflow we just have to propagate by hand and recompute it all.
if (is<RenderBox>(current)) {
auto& renderBox = downcast<RenderBox>(current);
if (!renderBox.hasSelfPaintingLayer() && renderBox.inlineBoxWrapper()) {
LayoutRect logicalRect = renderBox.logicalVisualOverflowRectForPropagation(&style());
if (isHorizontal) {
logicalRect.moveBy(renderBox.location());
result.uniteIfNonZero(logicalRect);
} else {
logicalRect.moveBy(renderBox.location());
result.uniteIfNonZero(logicalRect.transposedRect());
}
}
} else if (is<RenderInline>(current)) {
// If the child doesn't need line boxes either, then we can recur.
auto& renderInline = downcast<RenderInline>(current);
if (!renderInline.alwaysCreateLineBoxes())
result.uniteIfNonZero(renderInline.culledInlineVisualOverflowBoundingBox());
else if (!renderInline.hasSelfPaintingLayer())
result.uniteIfNonZero(renderInline.linesVisualOverflowBoundingBox());
} else if (is<RenderText>(current)) {
// FIXME; Overflow from text boxes is lost. We will need to cache this information in
// InlineTextBoxes.
auto& renderText = downcast<RenderText>(current);
result.uniteIfNonZero(renderText.linesVisualOverflowBoundingBox());
}
}
return result;
}
LayoutRect RenderInline::linesVisualOverflowBoundingBox() const
{
if (!alwaysCreateLineBoxes())
return culledInlineVisualOverflowBoundingBox();
if (!firstLineBox() || !lastLineBox())
return LayoutRect();
// Return the width of the minimal left side and the maximal right side.
LayoutUnit logicalLeftSide = LayoutUnit::max();
LayoutUnit logicalRightSide = LayoutUnit::min();
for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) {
logicalLeftSide = std::min(logicalLeftSide, curr->logicalLeftVisualOverflow());
logicalRightSide = std::max(logicalRightSide, curr->logicalRightVisualOverflow());
}
const RootInlineBox& firstRootBox = firstLineBox()->root();
const RootInlineBox& lastRootBox = lastLineBox()->root();
LayoutUnit logicalTop = firstLineBox()->logicalTopVisualOverflow(firstRootBox.lineTop());
LayoutUnit logicalWidth = logicalRightSide - logicalLeftSide;
LayoutUnit logicalHeight = lastLineBox()->logicalBottomVisualOverflow(lastRootBox.lineBottom()) - logicalTop;
LayoutRect rect(logicalLeftSide, logicalTop, logicalWidth, logicalHeight);
if (!style().isHorizontalWritingMode())
rect = rect.transposedRect();
return rect;
}
LayoutRect RenderInline::linesVisualOverflowBoundingBoxInFragment(const RenderFragmentContainer* fragment) const
{
ASSERT(alwaysCreateLineBoxes());
ASSERT(fragment);
if (!firstLineBox() || !lastLineBox())
return LayoutRect();
// Return the width of the minimal left side and the maximal right side.
LayoutUnit logicalLeftSide = LayoutUnit::max();
LayoutUnit logicalRightSide = LayoutUnit::min();
LayoutUnit logicalTop;
LayoutUnit logicalHeight;
InlineFlowBox* lastInlineInFragment = 0;
for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) {
const RootInlineBox& root = curr->root();
if (root.containingFragment() != fragment) {
if (lastInlineInFragment)
break;
continue;
}
if (!lastInlineInFragment)
logicalTop = curr->logicalTopVisualOverflow(root.lineTop());
lastInlineInFragment = curr;
logicalLeftSide = std::min(logicalLeftSide, curr->logicalLeftVisualOverflow());
logicalRightSide = std::max(logicalRightSide, curr->logicalRightVisualOverflow());
}
if (!lastInlineInFragment)
return LayoutRect();
logicalHeight = lastInlineInFragment->logicalBottomVisualOverflow(lastInlineInFragment->root().lineBottom()) - logicalTop;
LayoutUnit logicalWidth = logicalRightSide - logicalLeftSide;
LayoutRect rect(logicalLeftSide, logicalTop, logicalWidth, logicalHeight);
if (!style().isHorizontalWritingMode())
rect = rect.transposedRect();
return rect;
}
LayoutRect RenderInline::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const
{
// Only first-letter renderers are allowed in here during layout. They mutate the tree triggering repaints.
ASSERT(!view().frameView().layoutContext().isPaintOffsetCacheEnabled() || style().styleType() == PseudoId::FirstLetter || hasSelfPaintingLayer());
if (!firstLineBoxIncludingCulling() && !continuation())
return LayoutRect();
LayoutRect 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; is<RenderInline>(inlineFlow) && inlineFlow != containingBlock;
inlineFlow = inlineFlow->parent()) {
if (inlineFlow == repaintContainer) {
hitRepaintContainer = true;
break;
}
if (inlineFlow->style().hasInFlowPosition() && inlineFlow->hasLayer())
repaintRect.move(downcast<RenderInline>(*inlineFlow).layer()->offsetForInFlowPosition());
}
LayoutUnit outlineSize { style().outlineSize() };
repaintRect.inflate(outlineSize);
if (hitRepaintContainer || !containingBlock)
return repaintRect;
if (containingBlock->hasOverflowClip())
containingBlock->applyCachedClipAndScrollPosition(repaintRect, repaintContainer, visibleRectContextForRepaint());
repaintRect = containingBlock->computeRectForRepaint(repaintRect, repaintContainer);
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;
}
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;
}
LayoutRect RenderInline::computeVisibleRectUsingPaintOffset(const LayoutRect& rect) const
{
LayoutRect adjustedRect = rect;
auto* layoutState = view().frameView().layoutContext().layoutState();
if (style().hasInFlowPosition() && layer())
adjustedRect.move(layer()->offsetForInFlowPosition());
adjustedRect.move(layoutState->paintOffset());
if (layoutState->isClipped())
adjustedRect.intersect(layoutState->clipRect());
return adjustedRect;
}
Optional<LayoutRect> RenderInline::computeVisibleRectInContainer(const LayoutRect& rect, const RenderLayerModelObject* container, VisibleRectContext context) const
{
// Repaint offset cache is only valid for root-relative repainting
if (view().frameView().layoutContext().isPaintOffsetCacheEnabled() && !container && !context.m_options.contains(VisibleRectContextOption::UseEdgeInclusiveIntersection))
return computeVisibleRectUsingPaintOffset(rect);
if (container == this)
return rect;
bool containerSkipped;
RenderElement* localContainer = this->container(container, containerSkipped);
if (!localContainer)
return rect;
LayoutRect adjustedRect = rect;
LayoutPoint topLeft = adjustedRect.location();
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().
topLeft += layer()->offsetForInFlowPosition();
}
// FIXME: We ignore the lightweight clipping rect that controls use, since if |o| is in mid-layout,
// its controlClipRect will be wrong. For overflow clip we use the values cached by the layer.
adjustedRect.setLocation(topLeft);
if (localContainer->hasOverflowClip()) {
// FIXME: Respect the value of context.m_options.
SetForScope<OptionSet<VisibleRectContextOption>> change(context.m_options, context.m_options | VisibleRectContextOption::ApplyCompositedContainerScrolls);
bool isEmpty = !downcast<RenderBox>(*localContainer).applyCachedClipAndScrollPosition(adjustedRect, container, context);
if (isEmpty) {
if (context.m_options.contains(VisibleRectContextOption::UseEdgeInclusiveIntersection))
return WTF::nullopt;
return adjustedRect;
}
}
if (containerSkipped) {
// If the repaintContainer is below o, then we need to map the rect into repaintContainer's coordinates.
LayoutSize containerOffset = container->offsetFromAncestorContainer(*localContainer);
adjustedRect.move(-containerOffset);
return adjustedRect;
}
return localContainer->computeVisibleRectInContainer(adjustedRect, container, context);
}
LayoutSize RenderInline::offsetFromContainer(RenderElement& container, const LayoutPoint&, bool* offsetDependsOnPoint) const
{
ASSERT(&container == this->container());
LayoutSize offset;
if (isInFlowPositioned())
offset += offsetForInFlowPosition();
if (is<RenderBox>(container))
offset -= toLayoutSize(downcast<RenderBox>(container).scrollPosition());
if (offsetDependsOnPoint)
*offsetDependsOnPoint = (is<RenderBox>(container) && container.style().isFlippedBlocksWritingMode()) || is<RenderFragmentedFlow>(container);
return offset;
}
void RenderInline::mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState& transformState, MapCoordinatesFlags mode, bool* wasFixed) const
{
if (repaintContainer == this)
return;
if (view().frameView().layoutContext().isPaintOffsetCacheEnabled() && !repaintContainer) {
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(repaintContainer, containerSkipped);
if (!container)
return;
if (mode & ApplyContainerFlip && is<RenderBox>(*container)) {
if (container->style().isFlippedBlocksWritingMode()) {
LayoutPoint centerPoint(transformState.mappedPoint());
transformState.move(downcast<RenderBox>(*container).flipForWritingMode(centerPoint) - centerPoint);
}
mode &= ~ApplyContainerFlip;
}
LayoutSize containerOffset = offsetFromContainer(*container, LayoutPoint(transformState.mappedPoint()));
bool preserve3D = mode & UseTransforms && (container->style().preserves3D() || style().preserves3D());
if (mode & UseTransforms && shouldUseTransformFromContainer(container)) {
TransformationMatrix t;
getTransformFromContainer(container, containerOffset, t);
transformState.applyTransform(t, preserve3D ? TransformState::AccumulateTransform : TransformState::FlattenTransform);
} else
transformState.move(containerOffset.width(), containerOffset.height(), preserve3D ? TransformState::AccumulateTransform : TransformState::FlattenTransform);
if (containerSkipped) {
// There can't be a transform between repaintContainer and o, because transforms create containers, so it should be safe
// to just subtract the delta between the repaintContainer and o.
LayoutSize containerOffset = repaintContainer->offsetFromAncestorContainer(*container);
transformState.move(-containerOffset.width(), -containerOffset.height(), preserve3D ? TransformState::AccumulateTransform : TransformState::FlattenTransform);
return;
}
container->mapLocalToContainer(repaintContainer, transformState, mode, wasFixed);
}
const RenderObject* RenderInline::pushMappingToContainer(const RenderLayerModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
{
ASSERT(ancestorToStopAt != this);
bool ancestorSkipped;
RenderElement* container = this->container(ancestorToStopAt, ancestorSkipped);
if (!container)
return nullptr;
LayoutSize adjustmentForSkippedAncestor;
if (ancestorSkipped) {
// There can't be a transform between repaintContainer and o, because transforms create containers, so it should be safe
// to just subtract the delta between the ancestor and o.
adjustmentForSkippedAncestor = -ancestorToStopAt->offsetFromAncestorContainer(*container);
}
bool offsetDependsOnPoint = false;
LayoutSize containerOffset = offsetFromContainer(*container, LayoutPoint(), &offsetDependsOnPoint);
bool preserve3D = container->style().preserves3D() || style().preserves3D();
if (shouldUseTransformFromContainer(container)) {
TransformationMatrix t;
getTransformFromContainer(container, containerOffset, t);
t.translateRight(adjustmentForSkippedAncestor.width(), adjustmentForSkippedAncestor.height()); // FIXME: right?
geometryMap.push(this, t, preserve3D, offsetDependsOnPoint);
} else {
containerOffset += adjustmentForSkippedAncestor;
geometryMap.push(this, containerOffset, preserve3D, offsetDependsOnPoint);
}
return ancestorSkipped ? ancestorToStopAt : container;
}
void RenderInline::updateDragState(bool dragOn)
{
RenderBoxModelObject::updateDragState(dragOn);
if (RenderBoxModelObject* continuation = this->continuation())
continuation->updateDragState(dragOn);
}
void RenderInline::updateHitTestResult(HitTestResult& result, const LayoutPoint& point)
{
if (result.innerNode())
return;
LayoutPoint localPoint(point);
if (Element* element = this->element()) {
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.
RenderBlock* firstBlock = element->renderer()->containingBlock();
// Get our containing block.
RenderBox* block = containingBlock();
localPoint.moveBy(block->location() - firstBlock->locationOffset());
}
result.setInnerNode(element);
if (!result.innerNonSharedNode())
result.setInnerNonSharedNode(element);
result.setLocalPoint(localPoint);
}
}
void RenderInline::dirtyLineBoxes(bool fullLayout)
{
if (fullLayout) {
m_lineBoxes.deleteLineBoxes();
return;
}
if (!alwaysCreateLineBoxes()) {
// We have to grovel into our children in order to dirty the appropriate lines.
for (auto& current : childrenOfType<RenderObject>(*this)) {
if (current.isFloatingOrOutOfFlowPositioned())
continue;
if (is<RenderBox>(current) && !current.needsLayout()) {
auto& renderBox = downcast<RenderBox>(current);
if (renderBox.inlineBoxWrapper())
renderBox.inlineBoxWrapper()->root().markDirty();
} else if (!current.selfNeedsLayout()) {
if (is<RenderInline>(current)) {
auto& renderInline = downcast<RenderInline>(current);
for (InlineFlowBox* childLine = renderInline.firstLineBox(); childLine; childLine = childLine->nextLineBox())
childLine->root().markDirty();
} else if (is<RenderText>(current)) {
auto& renderText = downcast<RenderText>(current);
for (InlineTextBox* childText = renderText.firstTextBox(); childText; childText = childText->nextTextBox())
childText->root().markDirty();
} else if (is<RenderLineBreak>(current)) {
auto& renderBR = downcast<RenderLineBreak>(current);
if (renderBR.inlineBoxWrapper())
renderBR.inlineBoxWrapper()->root().markDirty();
}
}
}
} else
m_lineBoxes.dirtyLineBoxes();
}
void RenderInline::deleteLines()
{
m_lineBoxes.deleteLineBoxTree();
}
std::unique_ptr<InlineFlowBox> RenderInline::createInlineFlowBox()
{
return makeUnique<InlineFlowBox>(*this);
}
InlineFlowBox* RenderInline::createAndAppendInlineFlowBox()
{
setAlwaysCreateLineBoxes();
auto newFlowBox = createInlineFlowBox();
auto flowBox = newFlowBox.get();
m_lineBoxes.appendLineBox(WTFMove(newFlowBox));
return flowBox;
}
LayoutUnit RenderInline::lineHeight(bool firstLine, LineDirectionMode /*direction*/, LinePositionMode /*linePositionMode*/) const
{
if (firstLine && view().usesFirstLineRules()) {
const RenderStyle& firstLineStyle = this->firstLineStyle();
if (&firstLineStyle != &style())
return firstLineStyle.computedLineHeight();
}
return style().computedLineHeight();
}
int RenderInline::baselinePosition(FontBaseline baselineType, bool firstLine, LineDirectionMode direction, LinePositionMode linePositionMode) const
{
const RenderStyle& style = firstLine ? firstLineStyle() : this->style();
const FontMetrics& fontMetrics = style.fontMetrics();
return fontMetrics.ascent(baselineType) + (lineHeight(firstLine, direction, linePositionMode) - fontMetrics.height()) / 2;
}
LayoutSize RenderInline::offsetForInFlowPositionedInline(const RenderBox* child) const
{
// FIXME: This function isn't right with mixed writing modes.
ASSERT(isInFlowPositioned());
if (!isInFlowPositioned())
return LayoutSize();
// 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.
LayoutSize logicalOffset;
LayoutUnit inlinePosition;
LayoutUnit blockPosition;
if (firstLineBox()) {
inlinePosition = LayoutUnit::fromFloatRound(firstLineBox()->logicalLeft());
blockPosition = firstLineBox()->logicalTop();
} else {
inlinePosition = layer()->staticInlinePosition();
blockPosition = layer()->staticBlockPosition();
}
if (!child->style().hasStaticInlinePosition(style().isHorizontalWritingMode()))
logicalOffset.setWidth(inlinePosition);
// This is not terribly intuitive, but we have to match other browsers. Despite being a block display type inside
// an inline, we still keep our x locked to the left of the relative positioned inline. Arguably the correct
// behavior would be to go flush left to the block that contains the inline, but that isn't what other browsers
// do.
else if (!child->style().isOriginalDisplayInlineType())
// Avoid adding in the left border/padding of the containing block twice. Subtract it out.
logicalOffset.setWidth(inlinePosition - child->containingBlock()->borderAndPaddingLogicalLeft());
if (!child->style().hasStaticBlockPosition(style().isHorizontalWritingMode()))
logicalOffset.setHeight(blockPosition);
return style().isHorizontalWritingMode() ? logicalOffset : logicalOffset.transposedSize();
}
void RenderInline::imageChanged(WrappedImagePtr, const IntRect*)
{
if (!parent())
return;
// FIXME: We can do better.
repaint();
}
void RenderInline::addFocusRingRects(Vector<LayoutRect>& rects, const LayoutPoint& additionalOffset, const RenderLayerModelObject* paintContainer)
{
AbsoluteRectsGeneratorContext context(rects, additionalOffset);
generateLineBoxRects(context);
for (auto& child : childrenOfType<RenderElement>(*this)) {
if (is<RenderListMarker>(child))
continue;
FloatPoint pos(additionalOffset);
// FIXME: This doesn't work correctly with transforms.
if (child.hasLayer())
pos = child.localToContainerPoint(FloatPoint(), paintContainer);
else if (is<RenderBox>(child))
pos.move(downcast<RenderBox>(child).locationOffset());
child.addFocusRingRects(rects, flooredIntPoint(pos), paintContainer);
}
if (RenderBoxModelObject* continuation = this->continuation()) {
if (continuation->isInline())
continuation->addFocusRingRects(rects, flooredLayoutPoint(LayoutPoint(additionalOffset + continuation->containingBlock()->location() - containingBlock()->location())), paintContainer);
else
continuation->addFocusRingRects(rects, flooredLayoutPoint(LayoutPoint(additionalOffset + downcast<RenderBox>(*continuation).location() - containingBlock()->location())), paintContainer);
}
}
void RenderInline::paintOutline(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (!hasOutline())
return;
auto& styleToUse = style();
// Only paint the focus ring by hand if the theme isn't able to draw it.
if (styleToUse.outlineStyleIsAuto() == OutlineIsAuto::On && !theme().supportsFocusRing(styleToUse)) {
Vector<LayoutRect> focusRingRects;
addFocusRingRects(focusRingRects, paintOffset, paintInfo.paintContainer);
paintFocusRing(paintInfo, styleToUse, focusRingRects);
}
if (hasOutlineAnnotation() && styleToUse.outlineStyleIsAuto() == OutlineIsAuto::Off && !theme().supportsFocusRing(styleToUse))
addPDFURLRect(paintInfo, paintOffset);
GraphicsContext& graphicsContext = paintInfo.context();
if (graphicsContext.paintingDisabled())
return;
if (styleToUse.outlineStyleIsAuto() == OutlineIsAuto::On || !styleToUse.hasOutline())
return;
Vector<LayoutRect> rects;
rects.append(LayoutRect());
for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) {
const RootInlineBox& rootBox = curr->root();
LayoutUnit top = std::max(rootBox.lineTop(), LayoutUnit(curr->logicalTop()));
LayoutUnit bottom = std::min(rootBox.lineBottom(), LayoutUnit(curr->logicalBottom()));
rects.append({ LayoutUnit(curr->x()), top, LayoutUnit(curr->logicalWidth()), bottom - top });
}
rects.append(LayoutRect());
Color outlineColor = styleToUse.visitedDependentColorWithColorFilter(CSSPropertyOutlineColor);
bool useTransparencyLayer = !outlineColor.isOpaque();
if (useTransparencyLayer) {
graphicsContext.beginTransparencyLayer(outlineColor.alphaAsFloat());
outlineColor = outlineColor.opaqueColor();
}
for (unsigned i = 1; i < rects.size() - 1; i++)
paintOutlineForLine(graphicsContext, paintOffset, rects.at(i - 1), rects.at(i), rects.at(i + 1), outlineColor);
if (useTransparencyLayer)
graphicsContext.endTransparencyLayer();
}
void RenderInline::paintOutlineForLine(GraphicsContext& graphicsContext, const LayoutPoint& paintOffset,
const LayoutRect& previousLine, const LayoutRect& thisLine, const LayoutRect& nextLine, const Color& outlineColor)
{
const auto& styleToUse = style();
float outlineOffset = styleToUse.outlineOffset();
LayoutRect outlineBoxRect = thisLine;
outlineBoxRect.inflate(outlineOffset);
outlineBoxRect.moveBy(paintOffset);
if (outlineBoxRect.isEmpty())
return;
float outlineWidth = styleToUse.outlineWidth();
BorderStyle outlineStyle = styleToUse.outlineStyle();
bool antialias = shouldAntialiasLines(graphicsContext);
auto adjustedPreviousLine = previousLine;
adjustedPreviousLine.moveBy(paintOffset);
auto adjustedNextLine = nextLine;
adjustedNextLine.moveBy(paintOffset);
float adjacentWidth1 = 0;
float adjacentWidth2 = 0;
// left edge
auto topLeft = outlineBoxRect.minXMinYCorner();
if (previousLine.isEmpty() || thisLine.x() < previousLine.x() || (previousLine.maxX()) <= thisLine.x()) {
topLeft.move(-outlineWidth, -outlineWidth);
adjacentWidth1 = outlineWidth;
} else {
topLeft.move(-outlineWidth, 2 * outlineOffset);
adjacentWidth1 = -outlineWidth;
}
auto bottomRight = outlineBoxRect.minXMaxYCorner();
if (nextLine.isEmpty() || thisLine.x() <= nextLine.x() || (nextLine.maxX()) <= thisLine.x()) {
bottomRight.move(0, outlineWidth);
adjacentWidth2 = outlineWidth;
} else {
bottomRight.move(0, -2 * outlineOffset);
adjacentWidth2 = -outlineWidth;
}
drawLineForBoxSide(graphicsContext, FloatRect(topLeft, bottomRight), BSLeft, outlineColor, outlineStyle, adjacentWidth1, adjacentWidth2, antialias);
// right edge
topLeft = outlineBoxRect.maxXMinYCorner();
if (previousLine.isEmpty() || previousLine.maxX() < thisLine.maxX() || thisLine.maxX() <= previousLine.x()) {
topLeft.move(0, -outlineWidth);
adjacentWidth1 = outlineWidth;
} else {
topLeft.move(0, 2 * outlineOffset);
adjacentWidth1 = -outlineWidth;
}
bottomRight = outlineBoxRect.maxXMaxYCorner();
if (nextLine.isEmpty() || nextLine.maxX() <= thisLine.maxX() || thisLine.maxX() <= nextLine.x()) {
bottomRight.move(outlineWidth, outlineWidth);
adjacentWidth2 = outlineWidth;
} else {
bottomRight.move(outlineWidth, -2 * outlineOffset);
adjacentWidth2 = -outlineWidth;
}
drawLineForBoxSide(graphicsContext, FloatRect(topLeft, bottomRight), BSRight, outlineColor, outlineStyle, adjacentWidth1, adjacentWidth2, antialias);
// upper edge
if (thisLine.x() < previousLine.x()) {
topLeft = outlineBoxRect.minXMinYCorner();
topLeft.move(-outlineWidth, -outlineWidth);
adjacentWidth1 = outlineWidth;
bottomRight = outlineBoxRect.maxXMinYCorner();
bottomRight.move(outlineWidth, 0);
if (!previousLine.isEmpty() && adjustedPreviousLine.x() < bottomRight.x()) {
bottomRight.setX(adjustedPreviousLine.x() - outlineOffset);
adjacentWidth2 = -outlineWidth;
} else
adjacentWidth2 = outlineWidth;
drawLineForBoxSide(graphicsContext, FloatRect(topLeft, bottomRight), BSTop, outlineColor, outlineStyle, adjacentWidth1, adjacentWidth2, antialias);
}
if (previousLine.maxX() < thisLine.maxX()) {
topLeft = outlineBoxRect.minXMinYCorner();
topLeft.move(-outlineWidth, -outlineWidth);
if (!previousLine.isEmpty() && adjustedPreviousLine.maxX() > topLeft.x()) {
topLeft.setX(adjustedPreviousLine.maxX() + outlineOffset);
adjacentWidth1 = -outlineWidth;
} else
adjacentWidth1 = outlineWidth;
bottomRight = outlineBoxRect.maxXMinYCorner();
bottomRight.move(outlineWidth, 0);
adjacentWidth2 = outlineWidth;
drawLineForBoxSide(graphicsContext, FloatRect(topLeft, bottomRight), BSTop, outlineColor, outlineStyle, adjacentWidth1, adjacentWidth2, antialias);
}
if (thisLine.x() == thisLine.maxX()) {
topLeft = outlineBoxRect.minXMinYCorner();
topLeft.move(-outlineWidth, -outlineWidth);
adjacentWidth1 = outlineWidth;
bottomRight = outlineBoxRect.maxXMinYCorner();
bottomRight.move(outlineWidth, 0);
adjacentWidth2 = outlineWidth;
drawLineForBoxSide(graphicsContext, FloatRect(topLeft, bottomRight), BSTop, outlineColor, outlineStyle, adjacentWidth1, adjacentWidth2, antialias);
}
// lower edge
if (thisLine.x() < nextLine.x()) {
topLeft = outlineBoxRect.minXMaxYCorner();
topLeft.move(-outlineWidth, 0);
adjacentWidth1 = outlineWidth;
bottomRight = outlineBoxRect.maxXMaxYCorner();
bottomRight.move(outlineWidth, outlineWidth);
if (!nextLine.isEmpty() && (adjustedNextLine.x() < bottomRight.x())) {
bottomRight.setX(adjustedNextLine.x() - outlineOffset);
adjacentWidth2 = -outlineWidth;
} else
adjacentWidth2 = outlineWidth;
drawLineForBoxSide(graphicsContext, FloatRect(topLeft, bottomRight), BSBottom, outlineColor, outlineStyle, adjacentWidth1, adjacentWidth2, antialias);
}
if (nextLine.maxX() < thisLine.maxX()) {
topLeft = outlineBoxRect.minXMaxYCorner();
topLeft.move(-outlineWidth, 0);
if (!nextLine.isEmpty() && adjustedNextLine.maxX() > topLeft.x()) {
topLeft.setX(adjustedNextLine.maxX() + outlineOffset);
adjacentWidth1 = -outlineWidth;
} else
adjacentWidth1 = outlineWidth;
bottomRight = outlineBoxRect.maxXMaxYCorner();
bottomRight.move(outlineWidth, outlineWidth);
adjacentWidth2 = outlineWidth;
drawLineForBoxSide(graphicsContext, FloatRect(topLeft, bottomRight), BSBottom, outlineColor, outlineStyle, adjacentWidth1, adjacentWidth2, antialias);
}
if (thisLine.x() == thisLine.maxX()) {
topLeft = outlineBoxRect.minXMaxYCorner();
topLeft.move(-outlineWidth, 0);
adjacentWidth1 = outlineWidth;
bottomRight = outlineBoxRect.maxXMaxYCorner();
bottomRight.move(outlineWidth, outlineWidth);
adjacentWidth2 = outlineWidth;
drawLineForBoxSide(graphicsContext, FloatRect(topLeft, bottomRight), BSBottom, outlineColor, outlineStyle, adjacentWidth1, adjacentWidth2, antialias);
}
}
} // namespace WebCore