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/*
* Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005 Rob Buis <buis@kde.org>
* Copyright (C) 2010 Dirk Schulze <krit@webkit.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "core/svg/SVGFEImageElement.h"
#include "core/XLinkNames.h"
#include "core/dom/Document.h"
#include "core/fetch/FetchRequest.h"
#include "core/fetch/ResourceFetcher.h"
#include "core/svg/SVGDocumentExtensions.h"
#include "core/svg/SVGPreserveAspectRatio.h"
#include "core/svg/graphics/filters/SVGFEImage.h"
#include "platform/graphics/Image.h"
namespace blink {
inline SVGFEImageElement::SVGFEImageElement(Document& document)
: SVGFilterPrimitiveStandardAttributes(SVGNames::feImageTag, document)
, SVGURIReference(this)
, m_preserveAspectRatio(SVGAnimatedPreserveAspectRatio::create(this, SVGNames::preserveAspectRatioAttr, SVGPreserveAspectRatio::create()))
{
addToPropertyMap(m_preserveAspectRatio);
}
DEFINE_NODE_FACTORY(SVGFEImageElement)
SVGFEImageElement::~SVGFEImageElement()
{
#if ENABLE(OILPAN)
if (m_cachedImage) {
m_cachedImage->removeClient(this);
m_cachedImage = 0;
}
#else
clearResourceReferences();
#endif
}
void SVGFEImageElement::trace(Visitor* visitor)
{
visitor->trace(m_preserveAspectRatio);
SVGFilterPrimitiveStandardAttributes::trace(visitor);
SVGURIReference::trace(visitor);
}
bool SVGFEImageElement::currentFrameHasSingleSecurityOrigin() const
{
if (m_cachedImage && m_cachedImage->image())
return m_cachedImage->image()->currentFrameHasSingleSecurityOrigin();
return true;
}
void SVGFEImageElement::clearResourceReferences()
{
if (m_cachedImage) {
m_cachedImage->removeClient(this);
m_cachedImage = 0;
}
removeAllOutgoingReferences();
}
void SVGFEImageElement::fetchImageResource()
{
FetchRequest request(ResourceRequest(ownerDocument()->completeURL(hrefString())), localName());
m_cachedImage = document().fetcher()->fetchImage(request);
if (m_cachedImage)
m_cachedImage->addClient(this);
}
void SVGFEImageElement::buildPendingResource()
{
clearResourceReferences();
if (!inDocument())
return;
AtomicString id;
Element* target = SVGURIReference::targetElementFromIRIString(hrefString(), treeScope(), &id);
if (!target) {
if (id.isEmpty())
fetchImageResource();
else {
document().accessSVGExtensions().addPendingResource(id, this);
ASSERT(hasPendingResources());
}
} else if (target->isSVGElement()) {
// Register us with the target in the dependencies map. Any change of hrefElement
// that leads to relayout/repainting now informs us, so we can react to it.
addReferenceTo(toSVGElement(target));
}
invalidate();
}
bool SVGFEImageElement::isSupportedAttribute(const QualifiedName& attrName)
{
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
if (supportedAttributes.isEmpty()) {
SVGURIReference::addSupportedAttributes(supportedAttributes);
supportedAttributes.add(SVGNames::preserveAspectRatioAttr);
}
return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
}
void SVGFEImageElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
parseAttributeNew(name, value);
}
void SVGFEImageElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGFilterPrimitiveStandardAttributes::svgAttributeChanged(attrName);
return;
}
SVGElement::InvalidationGuard invalidationGuard(this);
if (attrName == SVGNames::preserveAspectRatioAttr) {
invalidate();
return;
}
if (SVGURIReference::isKnownAttribute(attrName)) {
buildPendingResource();
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(Resource*)
{
if (!inDocument())
return;
Element* parent = parentElement();
ASSERT(parent);
if (!isSVGFilterElement(*parent) || !parent->renderer())
return;
if (RenderObject* renderer = this->renderer())
markForLayoutAndParentResourceInvalidation(renderer);
}
PassRefPtrWillBeRawPtr<FilterEffect> SVGFEImageElement::build(SVGFilterBuilder*, Filter* filter)
{
if (m_cachedImage)
return FEImage::createWithImage(filter, m_cachedImage->imageForRenderer(renderer()), m_preserveAspectRatio->currentValue());
return FEImage::createWithIRIReference(filter, treeScope(), hrefString(), m_preserveAspectRatio->currentValue());
}
}
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