void RenderNamedFlowThread::checkInvalidRegions()
{
Vector<RenderNamedFlowFragment*> newValidFragments;
for (auto& region : m_invalidRegionList) {
RenderNamedFlowFragment* namedFlowFragment = toRenderNamedFlowFragment(region);
// The only reason a region would be invalid is because it has a parent flow thread.
ASSERT(!namedFlowFragment->isValid() && namedFlowFragment->parentNamedFlowThread());
if (namedFlowFragment->parentNamedFlowThread()->dependsOn(this))
continue;
newValidFragments.append(namedFlowFragment);
}
for (auto& namedFlowFragment : newValidFragments) {
m_invalidRegionList.remove(namedFlowFragment);
namedFlowFragment->parentNamedFlowThread()->m_observerThreadsSet.remove(this);
addFragmentToNamedFlowThread(namedFlowFragment);
}
if (!newValidFragments.isEmpty())
invalidateRegions();
if (m_observerThreadsSet.isEmpty())
return;
// Notify all the flow threads that were dependent on this flow.
// Create a copy of the list first. That's because observers might change the list when calling checkInvalidRegions.
Vector<RenderNamedFlowThread*> observers;
copyToVector(m_observerThreadsSet, observers);
for (auto& flowThread : observers)
flowThread->checkInvalidRegions();
}
void RenderNamedFlowThread::removeRegionFromThread(RenderRegion* renderRegion)
{
ASSERT(renderRegion);
RenderNamedFlowFragment* renderNamedFlowFragment = toRenderNamedFlowFragment(renderRegion);
if (renderNamedFlowFragment->parentNamedFlowThread()) {
if (!renderNamedFlowFragment->isValid()) {
ASSERT(m_invalidRegionList.contains(renderNamedFlowFragment));
m_invalidRegionList.remove(renderNamedFlowFragment);
renderNamedFlowFragment->parentNamedFlowThread()->m_observerThreadsSet.remove(this);
// No need to invalidate the regions rectangles. The removed region
// was not taken into account. Just return here.
return;
}
removeDependencyOnFlowThread(renderNamedFlowFragment->parentNamedFlowThread());
}
ASSERT(m_regionList.contains(renderNamedFlowFragment));
bool wasFirst = m_regionList.first() == renderNamedFlowFragment;
m_regionList.remove(renderNamedFlowFragment);
if (canBeDestroyed())
setMarkForDestruction();
if (!m_regionList.isEmpty() && wasFirst)
updateWritingMode();
invalidateRegions();
}
void RenderNamedFlowThread::updateWritingMode()
{
RenderNamedFlowFragment* firstFragment = toRenderNamedFlowFragment(m_regionList.first());
if (!firstFragment)
return;
if (style().writingMode() == firstFragment->style().writingMode())
return;
// The first region defines the principal writing mode for the entire flow.
auto newStyle = RenderStyle::clone(&style());
newStyle.get().setWritingMode(firstFragment->style().writingMode());
setStyle(WTF::move(newStyle));
}
RenderNamedFlowFragment* RenderNamedFlowThread::fragmentFromAbsolutePointAndBox(const IntPoint& absolutePoint, const RenderBox& flowedBox)
{
RenderRegion* startRegion = nullptr;
RenderRegion* endRegion = nullptr;
if (!getRegionRangeForBox(&flowedBox, startRegion, endRegion))
return nullptr;
for (auto iter = m_regionList.find(startRegion), end = m_regionList.end(); iter != end; ++iter) {
RenderNamedFlowFragment* fragment = toRenderNamedFlowFragment(*iter);
RenderBlockFlow& fragmentContainer = fragment->fragmentContainer();
IntRect fragmentAbsoluteRect(roundedIntPoint(fragmentContainer.localToAbsolute()), roundedIntSize(fragmentContainer.paddingBoxRect().size()));
if (fragmentAbsoluteRect.contains(absolutePoint))
return fragment;
if (fragment == endRegion)
break;
}
return nullptr;
}
void RenderNamedFlowThread::addRegionToThread(RenderRegion* renderRegion)
{
ASSERT(renderRegion);
ASSERT(!renderRegion->isValid());
RenderNamedFlowFragment* renderNamedFlowFragment = toRenderNamedFlowFragment(renderRegion);
resetMarkForDestruction();
if (renderNamedFlowFragment->parentNamedFlowThread() && renderNamedFlowFragment->parentNamedFlowThread()->dependsOn(this)) {
// The order of invalid regions is irrelevant.
m_invalidRegionList.add(renderNamedFlowFragment);
// Register ourself to get a notification when the state changes.
renderNamedFlowFragment->parentNamedFlowThread()->m_observerThreadsSet.add(this);
return;
}
addFragmentToNamedFlowThread(renderNamedFlowFragment);
invalidateRegions();
}
bool RenderReplaced::shouldPaint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseOutline && paintInfo.phase != PaintPhaseSelfOutline
&& paintInfo.phase != PaintPhaseSelection && paintInfo.phase != PaintPhaseMask)
return false;
if (!paintInfo.shouldPaintWithinRoot(*this))
return false;
// if we're invisible or haven't received a layout yet, then just bail.
if (style().visibility() != VISIBLE)
return false;
RenderNamedFlowFragment* namedFlowFragment = currentRenderNamedFlowFragment();
// Check our region range to make sure we need to be painting in this region.
if (namedFlowFragment && !namedFlowFragment->flowThread()->objectShouldFragmentInFlowRegion(this, namedFlowFragment))
return false;
LayoutPoint adjustedPaintOffset = paintOffset + location();
// Early exit if the element touches the edges.
LayoutUnit top = adjustedPaintOffset.y() + visualOverflowRect().y();
LayoutUnit bottom = adjustedPaintOffset.y() + visualOverflowRect().maxY();
if (isSelected() && m_inlineBoxWrapper) {
const RootInlineBox& rootBox = m_inlineBoxWrapper->root();
LayoutUnit selTop = paintOffset.y() + rootBox.selectionTop();
LayoutUnit selBottom = paintOffset.y() + selTop + rootBox.selectionHeight();
top = std::min(selTop, top);
bottom = std::max(selBottom, bottom);
}
LayoutRect localRepaintRect = paintInfo.rect;
adjustRectWithMaximumOutline(paintInfo.phase, localRepaintRect);
if (adjustedPaintOffset.x() + visualOverflowRect().x() >= localRepaintRect.maxX() || adjustedPaintOffset.x() + visualOverflowRect().maxX() <= localRepaintRect.x())
return false;
if (top >= localRepaintRect.maxY() || bottom <= localRepaintRect.y())
return false;
return true;
}
static PassRefPtr<InspectorObject> buildObjectForElementInfo(Node* node)
{
if (!node->isElementNode() || !node->document().frame())
return nullptr;
RefPtr<InspectorObject> elementInfo = InspectorObject::create();
Element* element = toElement(node);
bool isXHTML = element->document().isXHTMLDocument();
elementInfo->setString("tagName", isXHTML ? element->nodeName() : element->nodeName().lower());
elementInfo->setString("idValue", element->getIdAttribute());
HashSet<AtomicString> usedClassNames;
if (element->hasClass() && element->isStyledElement()) {
StringBuilder classNames;
const SpaceSplitString& classNamesString = toStyledElement(element)->classNames();
size_t classNameCount = classNamesString.size();
for (size_t i = 0; i < classNameCount; ++i) {
const AtomicString& className = classNamesString[i];
if (usedClassNames.contains(className))
continue;
usedClassNames.add(className);
classNames.append('.');
classNames.append(className);
}
elementInfo->setString("className", classNames.toString());
}
RenderElement* renderer = element->renderer();
Frame* containingFrame = node->document().frame();
FrameView* containingView = containingFrame->view();
IntRect boundingBox = pixelSnappedIntRect(containingView->contentsToRootView(renderer->absoluteBoundingBoxRect()));
RenderBoxModelObject* modelObject = renderer->isBoxModelObject() ? toRenderBoxModelObject(renderer) : nullptr;
elementInfo->setString("nodeWidth", String::number(modelObject ? adjustForAbsoluteZoom(modelObject->pixelSnappedOffsetWidth(), *modelObject) : boundingBox.width()));
elementInfo->setString("nodeHeight", String::number(modelObject ? adjustForAbsoluteZoom(modelObject->pixelSnappedOffsetHeight(), *modelObject) : boundingBox.height()));
if (renderer->isRenderNamedFlowFragmentContainer()) {
RenderNamedFlowFragment* region = toRenderBlockFlow(renderer)->renderNamedFlowFragment();
if (region->isValid()) {
RenderFlowThread* flowThread = region->flowThread();
ASSERT(flowThread && flowThread->isRenderNamedFlowThread());
RefPtr<InspectorObject> regionFlowInfo = InspectorObject::create();
regionFlowInfo->setString("name", toRenderNamedFlowThread(flowThread)->flowThreadName());
regionFlowInfo->setArray("regions", buildObjectForCSSRegionsHighlight(region, flowThread));
elementInfo->setObject("regionFlowInfo", regionFlowInfo.release());
}
}
RenderFlowThread* containingFlowThread = renderer->flowThreadContainingBlock();
if (containingFlowThread && containingFlowThread->isRenderNamedFlowThread()) {
RefPtr<InspectorObject> contentFlowInfo = InspectorObject::create();
contentFlowInfo->setString("name", toRenderNamedFlowThread(containingFlowThread)->flowThreadName());
elementInfo->setObject("contentFlowInfo", contentFlowInfo.release());
}
#if ENABLE(CSS_SHAPES)
if (renderer->isBox()) {
RenderBox* renderBox = toRenderBox(renderer);
if (RefPtr<InspectorObject> shapeObject = buildObjectForShapeOutside(containingFrame, renderBox))
elementInfo->setObject("shapeOutsideInfo", shapeObject.release());
}
#endif
// Need to enable AX to get the computed role.
if (!WebCore::AXObjectCache::accessibilityEnabled())
WebCore::AXObjectCache::enableAccessibility();
if (AXObjectCache* axObjectCache = node->document().axObjectCache()) {
if (AccessibilityObject* axObject = axObjectCache->getOrCreate(node))
elementInfo->setString("role", axObject->computedRoleString());
}
return elementInfo.release();
}
LayoutRect RenderNamedFlowThread::decorationsClipRectForBoxInNamedFlowFragment(const RenderBox& box, RenderNamedFlowFragment& fragment) const
{
LayoutRect visualOverflowRect = fragment.visualOverflowRectForBox(&box);
LayoutUnit initialLogicalX = style().isHorizontalWritingMode() ? visualOverflowRect.x() : visualOverflowRect.y();
// The visual overflow rect returned by visualOverflowRectForBox is already flipped but the
// RenderRegion::rectFlowPortionForBox method expects it unflipped.
flipForWritingModeLocalCoordinates(visualOverflowRect);
visualOverflowRect = fragment.rectFlowPortionForBox(&box, visualOverflowRect);
// Now flip it again.
flipForWritingModeLocalCoordinates(visualOverflowRect);
// Take the scrolled offset of this object's parents into consideration.
IntSize scrolledContentOffset;
RenderBlock* containingBlock = box.containingBlock();
while (containingBlock) {
if (containingBlock->isRenderNamedFlowThread()) {
// We've reached the flow thread, take the scrolled offset of the region into consideration.
ASSERT(containingBlock == this);
scrolledContentOffset += fragment.fragmentContainer().scrolledContentOffset();
break;
}
scrolledContentOffset += containingBlock->scrolledContentOffset();
containingBlock = containingBlock->containingBlock();
}
if (!scrolledContentOffset.isZero()) {
if (style().isFlippedBlocksWritingMode())
scrolledContentOffset = -scrolledContentOffset;
visualOverflowRect.inflateX(scrolledContentOffset.width());
visualOverflowRect.inflateY(scrolledContentOffset.height());
}
// Layers are in physical coordinates so the origin must be moved to the physical top-left of the flowthread.
if (style().isFlippedBlocksWritingMode()) {
if (style().isHorizontalWritingMode())
visualOverflowRect.moveBy(LayoutPoint(0, height()));
else
visualOverflowRect.moveBy(LayoutPoint(width(), 0));
}
const RenderBox* iterBox = &box;
while (iterBox && iterBox != this) {
RenderBlock* containerBlock = iterBox->containingBlock();
// FIXME: This doesn't work properly with flipped writing modes.
// https://bugs.webkit.org/show_bug.cgi?id=125149
if (iterBox->isPositioned()) {
// For positioned elements, just use the layer's absolute bounding box.
visualOverflowRect.moveBy(iterBox->layer()->absoluteBoundingBox().location());
break;
}
LayoutRect currentBoxRect = iterBox->frameRect();
if (iterBox->style().isFlippedBlocksWritingMode()) {
if (iterBox->style().isHorizontalWritingMode())
currentBoxRect.setY(currentBoxRect.height() - currentBoxRect.maxY());
else
currentBoxRect.setX(currentBoxRect.width() - currentBoxRect.maxX());
}
if (containerBlock->style().writingMode() != iterBox->style().writingMode())
iterBox->flipForWritingMode(currentBoxRect);
visualOverflowRect.moveBy(currentBoxRect.location());
iterBox = containerBlock;
}
// Since the purpose of this method is to make sure the borders of a fragmented
// element don't overflow the region in the fragmentation direction, there's no
// point in restricting the clipping rect on the logical X axis.
// This also saves us the trouble of handling percent-based widths and margins
// since the absolute bounding box of a positioned element would not contain
// the correct coordinates relative to the region we're interested in, but rather
// relative to the actual flow thread.
if (style().isHorizontalWritingMode()) {
if (initialLogicalX < visualOverflowRect.x())
visualOverflowRect.shiftXEdgeTo(initialLogicalX);
if (visualOverflowRect.width() < frameRect().width())
visualOverflowRect.setWidth(frameRect().width());
} else {
if (initialLogicalX < visualOverflowRect.y())
visualOverflowRect.shiftYEdgeTo(initialLogicalX);
if (visualOverflowRect.height() < frameRect().height())
visualOverflowRect.setHeight(frameRect().height());
}
return visualOverflowRect;
}