void LayoutSVGResourceContainer::markAllClientsForInvalidation(InvalidationMode mode)
{
if ((m_clients.isEmpty() && m_resourceClients.isEmpty()) || m_isInvalidating)
return;
if (m_invalidationMask & mode)
return;
m_invalidationMask |= mode;
m_isInvalidating = true;
bool needsLayout = mode == LayoutAndBoundariesInvalidation;
bool markForInvalidation = mode != ParentOnlyInvalidation;
for (auto* client : m_clients) {
if (client->isSVGResourceContainer()) {
toLayoutSVGResourceContainer(client)->removeAllClientsFromCache(markForInvalidation);
continue;
}
if (markForInvalidation)
markClientForInvalidation(client, mode);
LayoutSVGResourceContainer::markForLayoutAndParentResourceInvalidation(client, needsLayout);
}
markAllResourceClientsForInvalidation();
m_isInvalidating = false;
}
const LayoutSVGResourceContainer*
LayoutSVGResourcePattern::resolveContentElement() const {
ASSERT(attributes().patternContentElement());
LayoutSVGResourceContainer* expectedLayoutObject =
toLayoutSVGResourceContainer(
attributes().patternContentElement()->layoutObject());
// No content inheritance - avoid walking the inheritance chain.
if (this == expectedLayoutObject)
return this;
// Walk the inheritance chain on the LayoutObject-side. If we reach the
// expected LayoutObject, all is fine. If we don't, there's a cycle that
// the cycle resolver did break, and the resource will be content-less.
const LayoutSVGResourceContainer* contentLayoutObject = this;
while (SVGResources* resources =
SVGResourcesCache::cachedResourcesForLayoutObject(
contentLayoutObject)) {
LayoutSVGResourceContainer* linkedResource = resources->linkedResource();
if (!linkedResource)
break;
if (linkedResource == expectedLayoutObject)
return expectedLayoutObject;
contentLayoutObject = linkedResource;
}
// There was a cycle, just use this resource as the "content resource" even
// though it will be empty (have no children).
return this;
}
PassRefPtr<const SkPicture> LayoutSVGResourcePattern::asPicture(const FloatRect& tileBounds,
const AffineTransform& tileTransform) const
{
ASSERT(!m_shouldCollectPatternAttributes);
AffineTransform contentTransform;
if (attributes().patternContentUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX)
contentTransform = tileTransform;
FloatRect bounds(FloatPoint(), tileBounds.size());
SkPictureBuilder pictureBuilder(bounds);
ASSERT(attributes().patternContentElement());
LayoutSVGResourceContainer* patternLayoutObject =
toLayoutSVGResourceContainer(attributes().patternContentElement()->layoutObject());
ASSERT(patternLayoutObject);
ASSERT(!patternLayoutObject->needsLayout());
SubtreeContentTransformScope contentTransformScope(contentTransform);
{
TransformRecorder transformRecorder(pictureBuilder.context(), *patternLayoutObject, tileTransform);
for (LayoutObject* child = patternLayoutObject->firstChild(); child; child = child->nextSibling())
SVGPaintContext::paintSubtree(&pictureBuilder.context(), child);
}
return pictureBuilder.endRecording();
}
void SVGMaskElement::svgAttributeChanged(const QualifiedName& attrName) {
bool isLengthAttr =
attrName == SVGNames::xAttr || attrName == SVGNames::yAttr ||
attrName == SVGNames::widthAttr || attrName == SVGNames::heightAttr;
if (isLengthAttr || attrName == SVGNames::maskUnitsAttr ||
attrName == SVGNames::maskContentUnitsAttr ||
SVGTests::isKnownAttribute(attrName)) {
SVGElement::InvalidationGuard invalidationGuard(this);
if (isLengthAttr) {
invalidateSVGPresentationAttributeStyle();
setNeedsStyleRecalc(LocalStyleChange,
StyleChangeReasonForTracing::fromAttribute(attrName));
updateRelativeLengthsInformation();
}
LayoutSVGResourceContainer* layoutObject =
toLayoutSVGResourceContainer(this->layoutObject());
if (layoutObject)
layoutObject->invalidateCacheAndMarkForLayout();
return;
}
SVGElement::svgAttributeChanged(attrName);
}
void PaintLayerFilterInfo::updateReferenceFilterClients(const FilterOperations& operations)
{
removeReferenceFilterClients();
for (size_t i = 0; i < operations.size(); ++i) {
RefPtrWillBeRawPtr<FilterOperation> filterOperation = operations.operations().at(i);
if (filterOperation->type() != FilterOperation::REFERENCE)
continue;
ReferenceFilterOperation* referenceFilterOperation = toReferenceFilterOperation(filterOperation.get());
DocumentResourceReference* documentReference = ReferenceFilterBuilder::documentResourceReference(referenceFilterOperation);
DocumentResource* cachedSVGDocument = documentReference ? documentReference->document() : 0;
if (cachedSVGDocument) {
// Reference is external; wait for notifyFinished().
cachedSVGDocument->addClient(this);
m_externalSVGReferences.append(cachedSVGDocument);
} else {
// Reference is internal; add layer as a client so we can trigger
// filter paint invalidation on SVG attribute change.
Element* filter = m_layer->layoutObject()->node()->document().getElementById(referenceFilterOperation->fragment());
if (!isSVGFilterElement(filter))
continue;
if (filter->layoutObject())
toLayoutSVGResourceContainer(filter->layoutObject())->addClientLayer(m_layer);
else
toSVGFilterElement(filter)->addClient(m_layer->layoutObject()->node());
m_internalSVGReferences.append(filter);
}
}
}
void SVGResourceClient::addFilterReference(SVGFilterElement* filter)
{
if (filter->layoutObject())
toLayoutSVGResourceContainer(filter->layoutObject())->addResourceClient(this);
else
filter->addClient(this);
m_filterReferences.add(filter);
}
bool LayoutSVGResourceGradient::isChildAllowed(LayoutObject* child, const ComputedStyle&) const
{
if (child->isSVGGradientStop())
return true;
if (!child->isSVGResourceContainer())
return false;
return toLayoutSVGResourceContainer(child)->isSVGPaintServer();
}
void SVGResourceClient::clearFilterReferences()
{
for (SVGFilterElement* filter : m_filterReferences) {
if (filter->layoutObject())
toLayoutSVGResourceContainer(filter->layoutObject())->removeResourceClient(this);
else
filter->removeClient(this);
}
m_filterReferences.clear();
}
void PaintLayerFilterInfo::removeReferenceFilterClients()
{
for (size_t i = 0; i < m_externalSVGReferences.size(); ++i)
m_externalSVGReferences.at(i)->removeClient(this);
m_externalSVGReferences.clear();
for (size_t i = 0; i < m_internalSVGReferences.size(); ++i) {
Element* filter = m_internalSVGReferences.at(i).get();
if (filter->layoutObject())
toLayoutSVGResourceContainer(filter->layoutObject())->removeClientLayer(m_layer);
else
toSVGFilterElement(filter)->removeClient(m_layer->layoutObject()->node());
}
m_internalSVGReferences.clear();
}
void SVGRadialGradientElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGGradientElement::svgAttributeChanged(attrName);
return;
}
SVGElement::InvalidationGuard invalidationGuard(this);
updateRelativeLengthsInformation();
LayoutSVGResourceContainer* renderer = toLayoutSVGResourceContainer(this->layoutObject());
if (renderer)
renderer->invalidateCacheAndMarkForLayout();
}
ClipPathHelper(GraphicsContext* context, const PaintLayer& paintLayer, PaintLayerPaintingInfo& paintingInfo, LayoutRect& rootRelativeBounds, bool& rootRelativeBoundsComputed,
const LayoutPoint& offsetFromRoot, PaintLayerFlags paintFlags)
: m_resourceClipper(0), m_paintLayer(paintLayer), m_context(context)
{
const ComputedStyle& style = paintLayer.layoutObject()->styleRef();
// Clip-path, like border radius, must not be applied to the contents of a composited-scrolling container.
// It must, however, still be applied to the mask layer, so that the compositor can properly mask the
// scrolling contents and scrollbars.
if (!paintLayer.layoutObject()->hasClipPath() || (paintLayer.needsCompositedScrolling() && !(paintFlags & PaintLayerPaintingChildClippingMaskPhase)))
return;
m_clipperState = SVGClipPainter::ClipperNotApplied;
paintingInfo.ancestorHasClipPathClipping = true;
ASSERT(style.clipPath());
if (style.clipPath()->type() == ClipPathOperation::SHAPE) {
ShapeClipPathOperation* clipPath = toShapeClipPathOperation(style.clipPath());
if (clipPath->isValid()) {
if (!rootRelativeBoundsComputed) {
rootRelativeBounds = paintLayer.physicalBoundingBoxIncludingReflectionAndStackingChildren(offsetFromRoot);
rootRelativeBoundsComputed = true;
}
m_clipPathRecorder.emplace(*context, *paintLayer.layoutObject(), clipPath->path(FloatRect(rootRelativeBounds)));
}
} else if (style.clipPath()->type() == ClipPathOperation::REFERENCE) {
ReferenceClipPathOperation* referenceClipPathOperation = toReferenceClipPathOperation(style.clipPath());
Document& document = paintLayer.layoutObject()->document();
// FIXME: It doesn't work with forward or external SVG references (https://bugs.webkit.org/show_bug.cgi?id=90405)
Element* element = document.getElementById(referenceClipPathOperation->fragment());
if (isSVGClipPathElement(element) && element->layoutObject()) {
if (!rootRelativeBoundsComputed) {
rootRelativeBounds = paintLayer.physicalBoundingBoxIncludingReflectionAndStackingChildren(offsetFromRoot);
rootRelativeBoundsComputed = true;
}
m_resourceClipper = toLayoutSVGResourceClipper(toLayoutSVGResourceContainer(element->layoutObject()));
if (!SVGClipPainter(*m_resourceClipper).prepareEffect(*paintLayer.layoutObject(), FloatRect(rootRelativeBounds),
FloatRect(rootRelativeBounds), context, m_clipperState)) {
// No need to post-apply the clipper if this failed.
m_resourceClipper = 0;
}
}
}
}
void SVGPatternElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGElement::svgAttributeChanged(attrName);
return;
}
SVGElement::InvalidationGuard invalidationGuard(this);
if (attrName == SVGNames::xAttr
|| attrName == SVGNames::yAttr
|| attrName == SVGNames::widthAttr
|| attrName == SVGNames::heightAttr)
updateRelativeLengthsInformation();
LayoutSVGResourceContainer* renderer = toLayoutSVGResourceContainer(this->layoutObject());
if (renderer)
renderer->invalidateCacheAndMarkForLayout();
}
void SVGElement::invalidateRelativeLengthClients(SubtreeLayoutScope* layoutScope)
{
if (!inDocument())
return;
ASSERT(!m_inRelativeLengthClientsInvalidation);
#if ENABLE(ASSERT)
TemporaryChange<bool> inRelativeLengthClientsInvalidationChange(m_inRelativeLengthClientsInvalidation, true);
#endif
if (LayoutObject* layoutObject = this->layoutObject()) {
if (hasRelativeLengths() && layoutObject->isSVGResourceContainer())
toLayoutSVGResourceContainer(layoutObject)->invalidateCacheAndMarkForLayout(layoutScope);
else if (selfHasRelativeLengths())
layoutObject->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::Unknown, MarkContainerChain, layoutScope);
}
for (SVGElement* element : m_elementsWithRelativeLengths) {
if (element != this)
element->invalidateRelativeLengthClients(layoutScope);
}
}
void SVGResourcesCycleSolver::resolveCycles()
{
ASSERT(m_activeResources.isEmpty());
// If the starting LayoutObject is a resource container itself, then add it
// to the active set (to break direct self-references.)
if (m_layoutObject->isSVGResourceContainer())
m_activeResources.add(toLayoutSVGResourceContainer(m_layoutObject));
ResourceSet localResources;
m_resources->buildSetOfResources(localResources);
// This performs a depth-first search for a back-edge in all the
// (potentially disjoint) graphs formed by the resources referenced by
// |m_layoutObject|.
for (auto* localResource : localResources) {
if (m_activeResources.contains(localResource) || resourceContainsCycles(localResource))
breakCycle(localResource);
}
m_activeResources.clear();
}
void LayoutSVGResourceContainer::markForLayoutAndParentResourceInvalidation(LayoutObject* object, bool needsLayout)
{
ASSERT(object);
ASSERT(object->node());
if (needsLayout && !object->documentBeingDestroyed())
object->setNeedsLayoutAndFullPaintInvalidation(LayoutInvalidationReason::SvgResourceInvalidated);
removeFromCacheAndInvalidateDependencies(object, needsLayout);
// Invalidate resources in ancestor chain, if needed.
LayoutObject* current = object->parent();
while (current) {
removeFromCacheAndInvalidateDependencies(current, needsLayout);
if (current->isSVGResourceContainer()) {
// This will process the rest of the ancestors.
toLayoutSVGResourceContainer(current)->removeAllClientsFromCache();
break;
}
current = current->parent();
}
}
void writeSVGResourceContainer(TextStream& ts, const LayoutObject& object, int indent)
{
writeStandardPrefix(ts, object, indent);
Element* element = toElement(object.node());
const AtomicString& id = element->getIdAttribute();
writeNameAndQuotedValue(ts, "id", id);
LayoutSVGResourceContainer* resource = toLayoutSVGResourceContainer(const_cast<LayoutObject*>(&object));
ASSERT(resource);
if (resource->resourceType() == MaskerResourceType) {
LayoutSVGResourceMasker* masker = toLayoutSVGResourceMasker(resource);
writeNameValuePair(ts, "maskUnits", masker->maskUnits());
writeNameValuePair(ts, "maskContentUnits", masker->maskContentUnits());
ts << "\n";
} else if (resource->resourceType() == FilterResourceType) {
LayoutSVGResourceFilter* filter = toLayoutSVGResourceFilter(resource);
writeNameValuePair(ts, "filterUnits", filter->filterUnits());
writeNameValuePair(ts, "primitiveUnits", filter->primitiveUnits());
ts << "\n";
// Creating a placeholder filter which is passed to the builder.
FloatRect dummyRect;
IntRect dummyIntRect;
RefPtrWillBeRawPtr<SVGFilter> dummyFilter = SVGFilter::create(dummyIntRect, dummyRect, dummyRect, true);
if (RefPtrWillBeRawPtr<SVGFilterBuilder> builder = filter->buildPrimitives(dummyFilter.get())) {
if (FilterEffect* lastEffect = builder->lastEffect())
lastEffect->externalRepresentation(ts, indent + 1);
}
} else if (resource->resourceType() == ClipperResourceType) {
writeNameValuePair(ts, "clipPathUnits", toLayoutSVGResourceClipper(resource)->clipPathUnits());
ts << "\n";
} else if (resource->resourceType() == MarkerResourceType) {
LayoutSVGResourceMarker* marker = toLayoutSVGResourceMarker(resource);
writeNameValuePair(ts, "markerUnits", marker->markerUnits());
ts << " [ref at " << marker->referencePoint() << "]";
ts << " [angle=";
if (marker->angle() == -1)
ts << marker->orientType() << "]\n";
else
ts << marker->angle() << "]\n";
} else if (resource->resourceType() == PatternResourceType) {
LayoutSVGResourcePattern* pattern = static_cast<LayoutSVGResourcePattern*>(resource);
// Dump final results that are used for layout. No use in asking SVGPatternElement for its patternUnits(), as it may
// link to other patterns using xlink:href, we need to build the full inheritance chain, aka. collectPatternProperties()
PatternAttributes attributes;
toSVGPatternElement(pattern->element())->collectPatternAttributes(attributes);
writeNameValuePair(ts, "patternUnits", attributes.patternUnits());
writeNameValuePair(ts, "patternContentUnits", attributes.patternContentUnits());
AffineTransform transform = attributes.patternTransform();
if (!transform.isIdentity())
ts << " [patternTransform=" << transform << "]";
ts << "\n";
} else if (resource->resourceType() == LinearGradientResourceType) {
LayoutSVGResourceLinearGradient* gradient = static_cast<LayoutSVGResourceLinearGradient*>(resource);
// Dump final results that are used for layout. No use in asking SVGGradientElement for its gradientUnits(), as it may
// link to other gradients using xlink:href, we need to build the full inheritance chain, aka. collectGradientProperties()
LinearGradientAttributes attributes;
toSVGLinearGradientElement(gradient->element())->collectGradientAttributes(attributes);
writeCommonGradientProperties(ts, attributes.spreadMethod(), attributes.gradientTransform(), attributes.gradientUnits());
ts << " [start=" << gradient->startPoint(attributes) << "] [end=" << gradient->endPoint(attributes) << "]\n";
} else if (resource->resourceType() == RadialGradientResourceType) {
LayoutSVGResourceRadialGradient* gradient = toLayoutSVGResourceRadialGradient(resource);
// Dump final results that are used for layout. No use in asking SVGGradientElement for its gradientUnits(), as it may
// link to other gradients using xlink:href, we need to build the full inheritance chain, aka. collectGradientProperties()
RadialGradientAttributes attributes;
toSVGRadialGradientElement(gradient->element())->collectGradientAttributes(attributes);
writeCommonGradientProperties(ts, attributes.spreadMethod(), attributes.gradientTransform(), attributes.gradientUnits());
FloatPoint focalPoint = gradient->focalPoint(attributes);
FloatPoint centerPoint = gradient->centerPoint(attributes);
float radius = gradient->radius(attributes);
float focalRadius = gradient->focalRadius(attributes);
ts << " [center=" << centerPoint << "] [focal=" << focalPoint << "] [radius=" << radius << "] [focalRadius=" << focalRadius << "]\n";
} else {
ts << "\n";
}
writeChildren(ts, object, indent);
}