SVGFEImageElement.cpp [plain text]
#include "config.h"
#if ENABLE(SVG) && ENABLE(FILTERS)
#include "SVGFEImageElement.h"
#include "Attr.h"
#include "CachedImage.h"
#include "CachedResourceLoader.h"
#include "CachedResourceRequest.h"
#include "ColorSpace.h"
#include "Document.h"
#include "Image.h"
#include "RenderObject.h"
#include "RenderSVGResource.h"
#include "SVGElementInstance.h"
#include "SVGNames.h"
#include "SVGPreserveAspectRatio.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();
}
PassRefPtr<SVGFEImageElement> SVGFEImageElement::create(const QualifiedName& tagName, Document* document)
{
return adoptRef(new SVGFEImageElement(tagName, document));
}
SVGFEImageElement::~SVGFEImageElement()
{
clearResourceReferences();
}
void SVGFEImageElement::clearResourceReferences()
{
if (m_cachedImage) {
m_cachedImage->removeClient(this);
m_cachedImage = 0;
}
ASSERT(document());
document()->accessSVGExtensions()->removeAllTargetReferencesForElement(this);
}
void SVGFEImageElement::requestImageResource()
{
CachedResourceRequest request(ResourceRequest(ownerDocument()->completeURL(href())));
request.setInitiator(this);
m_cachedImage = document()->cachedResourceLoader()->requestImage(request);
if (m_cachedImage)
m_cachedImage->addClient(this);
}
void SVGFEImageElement::buildPendingResource()
{
clearResourceReferences();
if (!inDocument())
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, toSVGElement(target));
}
invalidate();
}
bool SVGFEImageElement::isSupportedAttribute(const QualifiedName& attrName)
{
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
if (supportedAttributes.isEmpty()) {
SVGURIReference::addSupportedAttributes(supportedAttributes);
SVGLangSpace::addSupportedAttributes(supportedAttributes);
SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
supportedAttributes.add(SVGNames::preserveAspectRatioAttr);
}
return supportedAttributes.contains<QualifiedName, SVGAttributeHashTranslator>(attrName);
}
void SVGFEImageElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (!isSupportedAttribute(name)) {
SVGFilterPrimitiveStandardAttributes::parseAttribute(name, value);
return;
}
if (name == SVGNames::preserveAspectRatioAttr) {
SVGPreserveAspectRatio preserveAspectRatio;
preserveAspectRatio.parse(value);
setPreserveAspectRatioBaseValue(preserveAspectRatio);
return;
}
if (SVGURIReference::parseAttribute(name, value))
return;
if (SVGLangSpace::parseAttribute(name, value))
return;
if (SVGExternalResourcesRequired::parseAttribute(name, value))
return;
ASSERT_NOT_REACHED();
}
void SVGFEImageElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
return;
}
SVGElementInstance::InvalidationGuard invalidationGuard(this);
if (attrName == SVGNames::preserveAspectRatioAttr) {
invalidate();
return;
}
if (SVGURIReference::isKnownAttribute(attrName)) {
buildPendingResource();
return;
}
if (SVGLangSpace::isKnownAttribute(attrName) || SVGExternalResourcesRequired::isKnownAttribute(attrName))
return;
ASSERT_NOT_REACHED();
}
Node::InsertionNotificationRequest SVGFEImageElement::insertedInto(ContainerNode* rootParent)
{
SVGFilterPrimitiveStandardAttributes::insertedInto(rootParent);
buildPendingResource();
return InsertionDone;
}
void SVGFEImageElement::removedFrom(ContainerNode* rootParent)
{
SVGFilterPrimitiveStandardAttributes::removedFrom(rootParent);
if (rootParent->inDocument())
clearResourceReferences();
}
void SVGFEImageElement::notifyFinished(CachedResource*)
{
if (!inDocument())
return;
Element* parent = parentElement();
ASSERT(parent);
if (!parent->hasTagName(SVGNames::filterTag) || !parent->renderer())
return;
RenderSVGResource::markForLayoutAndParentResourceInvalidation(parent->renderer());
}
PassRefPtr<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<KURL>& urls) const
{
SVGFilterPrimitiveStandardAttributes::addSubresourceAttributeURLs(urls);
addSubresourceURL(urls, document()->completeURL(href()));
}
}
#endif // ENABLE(SVG)