void BlockPainter::paintContinuationOutlines(const PaintInfo& info, const LayoutPoint& paintOffset)
{
LayoutInline* inlineCont = m_layoutBlock.inlineElementContinuation();
if (inlineCont && inlineCont->style()->hasOutline() && inlineCont->style()->visibility() == VISIBLE) {
LayoutInline* inlineLayoutObject = toLayoutInline(inlineCont->node()->layoutObject());
LayoutBlock* cb = m_layoutBlock.containingBlock();
bool inlineEnclosedInSelfPaintingLayer = false;
for (LayoutBoxModelObject* box = inlineLayoutObject; box != cb; box = box->parent()->enclosingBoxModelObject()) {
if (box->hasSelfPaintingLayer()) {
inlineEnclosedInSelfPaintingLayer = true;
break;
}
}
// Do not add continuations for outline painting by our containing block if we are a relative positioned
// anonymous block (i.e. have our own layer), paint them straightaway instead. This is because a block depends on layoutObjects in its continuation table being
// in the same layer.
if (!inlineEnclosedInSelfPaintingLayer && !m_layoutBlock.hasLayer()) {
cb->addContinuationWithOutline(inlineLayoutObject);
} else if (!inlineLayoutObject->firstLineBox() || (!inlineEnclosedInSelfPaintingLayer && m_layoutBlock.hasLayer())) {
// The outline might be painted multiple times if multiple blocks have the same inline element continuation, and the inline has a self-painting layer.
ScopeRecorder scopeRecorder(*info.context);
InlinePainter(*inlineLayoutObject).paintOutline(info, paintOffset - m_layoutBlock.locationOffset() + inlineLayoutObject->containingBlock()->location());
}
}
ContinuationOutlineTableMap* table = continuationOutlineTable();
if (table->isEmpty())
return;
OwnPtr<ListHashSet<LayoutInline*>> continuations = table->take(&m_layoutBlock);
if (!continuations)
return;
LayoutPoint accumulatedPaintOffset = paintOffset;
// Paint each continuation outline.
ListHashSet<LayoutInline*>::iterator end = continuations->end();
for (ListHashSet<LayoutInline*>::iterator it = continuations->begin(); it != end; ++it) {
// Need to add in the coordinates of the intervening blocks.
LayoutInline* flow = *it;
LayoutBlock* block = flow->containingBlock();
for ( ; block && block != &m_layoutBlock; block = block->containingBlock())
accumulatedPaintOffset.moveBy(block->location());
ASSERT(block);
InlinePainter(*flow).paintOutline(info, accumulatedPaintOffset);
}
}
void findGoodTouchTargets(const IntRect& touchBoxInRootFrame, LocalFrame* mainFrame, Vector<IntRect>& goodTargets, WillBeHeapVector<RawPtrWillBeMember<Node>>& highlightNodes)
{
goodTargets.clear();
int touchPointPadding = ceil(std::max(touchBoxInRootFrame.width(), touchBoxInRootFrame.height()) * 0.5);
IntPoint touchPoint = touchBoxInRootFrame.center();
IntPoint contentsPoint = mainFrame->view()->rootFrameToContents(touchPoint);
HitTestResult result = mainFrame->eventHandler().hitTestResultAtPoint(contentsPoint, HitTestRequest::ReadOnly | HitTestRequest::Active | HitTestRequest::ListBased, LayoutSize(touchPointPadding, touchPointPadding));
const WillBeHeapListHashSet<RefPtrWillBeMember<Node>>& hitResults = result.listBasedTestResult();
// Blacklist nodes that are container of disambiguated nodes.
// It is not uncommon to have a clickable <div> that contains other clickable objects.
// This heuristic avoids excessive disambiguation in that case.
WillBeHeapHashSet<RawPtrWillBeMember<Node>> blackList;
for (const auto& hitResult : hitResults) {
// Ignore any Nodes that can't be clicked on.
LayoutObject* layoutObject = hitResult.get()->layoutObject();
if (!layoutObject || !hitResult.get()->willRespondToMouseClickEvents())
continue;
// Blacklist all of the Node's containers.
for (LayoutBlock* container = layoutObject->containingBlock(); container; container = container->containingBlock()) {
Node* containerNode = container->node();
if (!containerNode)
continue;
if (!blackList.add(containerNode).isNewEntry)
break;
}
}
WillBeHeapHashMap<RawPtrWillBeMember<Node>, TouchTargetData> touchTargets;
float bestScore = 0;
for (const auto& hitResult : hitResults) {
for (Node* node = hitResult.get(); node; node = node->parentNode()) {
if (blackList.contains(node))
continue;
if (node->isDocumentNode() || isHTMLHtmlElement(*node) || isHTMLBodyElement(*node))
break;
if (node->willRespondToMouseClickEvents()) {
TouchTargetData& targetData = touchTargets.add(node, TouchTargetData()).storedValue->value;
targetData.windowBoundingBox = boundingBoxForEventNodes(node);
targetData.score = scoreTouchTarget(touchPoint, touchPointPadding, targetData.windowBoundingBox);
bestScore = std::max(bestScore, targetData.score);
break;
}
}
}
for (const auto& touchTarget : touchTargets) {
// Currently the scoring function uses the overlap area with the fat point as the score.
// We ignore the candidates that has less than 1/2 overlap (we consider not really ambiguous enough) than the best candidate to avoid excessive popups.
if (touchTarget.value.score < bestScore * 0.5)
continue;
goodTargets.append(touchTarget.value.windowBoundingBox);
highlightNodes.append(touchTarget.key);
}
}
void InlineFlowBoxPainter::paint(const PaintInfo& paintInfo, const LayoutPoint& paintOffset, const LayoutUnit lineTop, const LayoutUnit lineBottom)
{
LayoutRect overflowRect(m_inlineFlowBox.visualOverflowRect(lineTop, lineBottom));
m_inlineFlowBox.flipForWritingMode(overflowRect);
overflowRect.moveBy(paintOffset);
if (!paintInfo.rect.intersects(pixelSnappedIntRect(overflowRect)))
return;
if (paintInfo.phase == PaintPhaseOutline || paintInfo.phase == PaintPhaseSelfOutline) {
// Add ourselves to the paint info struct's list of inlines that need to paint their
// outlines.
if (m_inlineFlowBox.layoutObject().style()->visibility() == VISIBLE && m_inlineFlowBox.layoutObject().style()->hasOutline() && !m_inlineFlowBox.isRootInlineBox()) {
LayoutInline& inlineFlow = toLayoutInline(m_inlineFlowBox.layoutObject());
LayoutBlock* cb = 0;
bool containingBlockPaintsContinuationOutline = inlineFlow.continuation() || inlineFlow.isInlineElementContinuation();
if (containingBlockPaintsContinuationOutline) {
// FIXME: See https://bugs.webkit.org/show_bug.cgi?id=54690. We currently don't reconnect inline continuations
// after a child removal. As a result, those merged inlines do not get seperated and hence not get enclosed by
// anonymous blocks. In this case, it is better to bail out and paint it ourself.
LayoutBlock* enclosingAnonymousBlock = m_inlineFlowBox.layoutObject().containingBlock();
if (!enclosingAnonymousBlock->isAnonymousBlock()) {
containingBlockPaintsContinuationOutline = false;
} else {
cb = enclosingAnonymousBlock->containingBlock();
for (LayoutBoxModelObject* box = m_inlineFlowBox.boxModelObject(); box != cb; box = box->parent()->enclosingBoxModelObject()) {
if (box->hasSelfPaintingLayer()) {
containingBlockPaintsContinuationOutline = false;
break;
}
}
}
}
if (containingBlockPaintsContinuationOutline) {
// Add ourselves to the containing block of the entire continuation so that it can
// paint us atomically.
cb->addContinuationWithOutline(toLayoutInline(m_inlineFlowBox.layoutObject().node()->layoutObject()));
} else if (!inlineFlow.isInlineElementContinuation()) {
paintInfo.outlineObjects()->add(&inlineFlow);
}
}
} else if (paintInfo.phase == PaintPhaseMask) {
DrawingRecorder recorder(*paintInfo.context, m_inlineFlowBox, DisplayItem::paintPhaseToDrawingType(paintInfo.phase), pixelSnappedIntRect(overflowRect));
if (!recorder.canUseCachedDrawing())
paintMask(paintInfo, paintOffset);
return;
} else if (paintInfo.phase == PaintPhaseForeground) {
// Paint our background, border and box-shadow.
paintBoxDecorationBackground(paintInfo, paintOffset);
}
// Paint our children.
if (paintInfo.phase != PaintPhaseSelfOutline) {
PaintInfo childInfo(paintInfo);
childInfo.phase = paintInfo.phase == PaintPhaseChildOutlines ? PaintPhaseOutline : paintInfo.phase;
if (childInfo.paintingRoot && childInfo.paintingRoot->isDescendantOf(&m_inlineFlowBox.layoutObject()))
childInfo.paintingRoot = 0;
else
childInfo.updatePaintingRootForChildren(&m_inlineFlowBox.layoutObject());
for (InlineBox* curr = m_inlineFlowBox.firstChild(); curr; curr = curr->nextOnLine()) {
if (curr->layoutObject().isText() || !curr->boxModelObject()->hasSelfPaintingLayer())
curr->paint(childInfo, paintOffset, lineTop, lineBottom);
}
}
}
