SVGFEImageElement.cpp [plain text]
#include "config.h"
#include "SVGFEImageElement.h"
#include "CachedImage.h"
#include "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "Document.h"
#include "Image.h"
#include "RenderObject.h"
#include "RenderSVGResource.h"
#include "SVGNames.h"
#include "SVGPreserveAspectRatioValue.h"
#include "XLinkNames.h"
namespace WebCore {
DEFINE_ANIMATED_PRESERVEASPECTRATIO(SVGFEImageElement, SVGNames::preserveAspectRatioAttr, PreserveAspectRatio, preserveAspectRatio)
DEFINE_ANIMATED_STRING(SVGFEImageElement, XLinkNames::hrefAttr, Href, href)
DEFINE_ANIMATED_BOOLEAN(SVGFEImageElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGFEImageElement)
REGISTER_LOCAL_ANIMATED_PROPERTY(preserveAspectRatio)
REGISTER_LOCAL_ANIMATED_PROPERTY(href)
REGISTER_LOCAL_ANIMATED_PROPERTY(externalResourcesRequired)
REGISTER_PARENT_ANIMATED_PROPERTIES(SVGFilterPrimitiveStandardAttributes)
END_REGISTER_ANIMATED_PROPERTIES
inline SVGFEImageElement::SVGFEImageElement(const QualifiedName& tagName, Document& document)
: SVGFilterPrimitiveStandardAttributes(tagName, document)
{
ASSERT(hasTagName(SVGNames::feImageTag));
registerAnimatedPropertiesForSVGFEImageElement();
}
Ref<SVGFEImageElement> SVGFEImageElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGFEImageElement(tagName, document));
}
SVGFEImageElement::~SVGFEImageElement()
{
clearResourceReferences();
}
bool SVGFEImageElement::hasSingleSecurityOrigin() const
{
if (!m_cachedImage)
return true;
auto* image = m_cachedImage->image();
return !image || image->hasSingleSecurityOrigin();
}
void SVGFEImageElement::clearResourceReferences()
{
if (m_cachedImage) {
m_cachedImage->removeClient(*this);
m_cachedImage = nullptr;
}
document().accessSVGExtensions().removeAllTargetReferencesForElement(this);
}
void SVGFEImageElement::requestImageResource()
{
ResourceLoaderOptions options = CachedResourceLoader::defaultCachedResourceOptions();
options.contentSecurityPolicyImposition = isInUserAgentShadowTree() ? ContentSecurityPolicyImposition::SkipPolicyCheck : ContentSecurityPolicyImposition::DoPolicyCheck;
CachedResourceRequest request(ResourceRequest(document().completeURL(href())), options);
request.setInitiator(*this);
m_cachedImage = document().cachedResourceLoader().requestImage(WTFMove(request));
if (m_cachedImage)
m_cachedImage->addClient(*this);
}
void SVGFEImageElement::buildPendingResource()
{
clearResourceReferences();
if (!isConnected())
return;
String id;
Element* target = SVGURIReference::targetElementFromIRIString(href(), document(), &id);
if (!target) {
if (id.isEmpty())
requestImageResource();
else {
document().accessSVGExtensions().addPendingResource(id, this);
ASSERT(hasPendingResources());
}
} else if (target->isSVGElement()) {
document().accessSVGExtensions().addElementReferencingTarget(this, downcast<SVGElement>(target));
}
invalidate();
}
void SVGFEImageElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == SVGNames::preserveAspectRatioAttr) {
SVGPreserveAspectRatioValue preserveAspectRatio;
preserveAspectRatio.parse(value);
setPreserveAspectRatioBaseValue(preserveAspectRatio);
return;
}
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
SVGURIReference::parseAttribute(name, value);
SVGExternalResourcesRequired::parseAttribute(name, value);
}
void SVGFEImageElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (attrName == SVGNames::preserveAspectRatioAttr) {
InstanceInvalidationGuard guard(*this);
invalidate();
return;
}
if (SVGURIReference::isKnownAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
buildPendingResource();
return;
}
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
}
Node::InsertionNotificationRequest SVGFEImageElement::insertedInto(ContainerNode& rootParent)
{
SVGFilterPrimitiveStandardAttributes::insertedInto(rootParent);
return InsertionShouldCallFinishedInsertingSubtree;
}
void SVGFEImageElement::finishedInsertingSubtree()
{
buildPendingResource();
}
void SVGFEImageElement::removedFrom(ContainerNode& rootParent)
{
SVGFilterPrimitiveStandardAttributes::removedFrom(rootParent);
if (rootParent.isConnected())
clearResourceReferences();
}
void SVGFEImageElement::notifyFinished(CachedResource&)
{
if (!isConnected())
return;
Element* parent = parentElement();
if (!parent || !parent->hasTagName(SVGNames::filterTag))
return;
RenderElement* parentRenderer = parent->renderer();
if (!parentRenderer)
return;
RenderSVGResource::markForLayoutAndParentResourceInvalidation(*parentRenderer);
}
RefPtr<FilterEffect> SVGFEImageElement::build(SVGFilterBuilder*, Filter& filter)
{
if (m_cachedImage)
return FEImage::createWithImage(filter, m_cachedImage->imageForRenderer(renderer()), preserveAspectRatio());
return FEImage::createWithIRIReference(filter, document(), href(), preserveAspectRatio());
}
void SVGFEImageElement::addSubresourceAttributeURLs(ListHashSet<URL>& urls) const
{
SVGFilterPrimitiveStandardAttributes::addSubresourceAttributeURLs(urls);
addSubresourceURL(urls, document().completeURL(href()));
}
}