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/*
* Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Rob Buis <buis@kde.org>
* Copyright (C) 2006 Alexander Kellett <lypanov@kde.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/SVGImageElement.h"
#include "core/CSSPropertyNames.h"
#include "core/XLinkNames.h"
#include "core/rendering/RenderImageResource.h"
#include "core/rendering/svg/RenderSVGImage.h"
namespace blink {
inline SVGImageElement::SVGImageElement(Document& document)
: SVGGraphicsElement(SVGNames::imageTag, document)
, SVGURIReference(this)
, m_x(SVGAnimatedLength::create(this, SVGNames::xAttr, SVGLength::create(LengthModeWidth), AllowNegativeLengths))
, m_y(SVGAnimatedLength::create(this, SVGNames::yAttr, SVGLength::create(LengthModeHeight), AllowNegativeLengths))
, m_width(SVGAnimatedLength::create(this, SVGNames::widthAttr, SVGLength::create(LengthModeWidth), ForbidNegativeLengths))
, m_height(SVGAnimatedLength::create(this, SVGNames::heightAttr, SVGLength::create(LengthModeHeight), ForbidNegativeLengths))
, m_preserveAspectRatio(SVGAnimatedPreserveAspectRatio::create(this, SVGNames::preserveAspectRatioAttr, SVGPreserveAspectRatio::create()))
, m_imageLoader(SVGImageLoader::create(this))
, m_needsLoaderURIUpdate(true)
{
addToPropertyMap(m_x);
addToPropertyMap(m_y);
addToPropertyMap(m_width);
addToPropertyMap(m_height);
addToPropertyMap(m_preserveAspectRatio);
}
DEFINE_NODE_FACTORY(SVGImageElement)
void SVGImageElement::trace(Visitor* visitor)
{
visitor->trace(m_x);
visitor->trace(m_y);
visitor->trace(m_width);
visitor->trace(m_height);
visitor->trace(m_preserveAspectRatio);
visitor->trace(m_imageLoader);
SVGGraphicsElement::trace(visitor);
SVGURIReference::trace(visitor);
}
bool SVGImageElement::currentFrameHasSingleSecurityOrigin() const
{
if (RenderSVGImage* renderSVGImage = toRenderSVGImage(renderer())) {
if (renderSVGImage->imageResource()->hasImage()) {
if (Image* image = renderSVGImage->imageResource()->cachedImage()->image())
return image->currentFrameHasSingleSecurityOrigin();
}
}
return true;
}
bool SVGImageElement::isSupportedAttribute(const QualifiedName& attrName)
{
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
if (supportedAttributes.isEmpty()) {
SVGURIReference::addSupportedAttributes(supportedAttributes);
supportedAttributes.add(SVGNames::xAttr);
supportedAttributes.add(SVGNames::yAttr);
supportedAttributes.add(SVGNames::widthAttr);
supportedAttributes.add(SVGNames::heightAttr);
supportedAttributes.add(SVGNames::preserveAspectRatioAttr);
}
return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
}
bool SVGImageElement::isPresentationAttribute(const QualifiedName& name) const
{
if (name == SVGNames::widthAttr || name == SVGNames::heightAttr)
return true;
return SVGGraphicsElement::isPresentationAttribute(name);
}
void SVGImageElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
{
if (!isSupportedAttribute(name))
SVGGraphicsElement::collectStyleForPresentationAttribute(name, value, style);
else if (name == SVGNames::widthAttr)
addPropertyToPresentationAttributeStyle(style, CSSPropertyWidth, value);
else if (name == SVGNames::heightAttr)
addPropertyToPresentationAttributeStyle(style, CSSPropertyHeight, value);
}
void SVGImageElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
parseAttributeNew(name, value);
}
void SVGImageElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGGraphicsElement::svgAttributeChanged(attrName);
return;
}
SVGElement::InvalidationGuard invalidationGuard(this);
bool isLengthAttribute = attrName == SVGNames::xAttr
|| attrName == SVGNames::yAttr
|| attrName == SVGNames::widthAttr
|| attrName == SVGNames::heightAttr;
if (isLengthAttribute)
updateRelativeLengthsInformation();
if (SVGURIReference::isKnownAttribute(attrName)) {
if (inDocument())
imageLoader().updateFromElement(ImageLoader::UpdateIgnorePreviousError);
else
m_needsLoaderURIUpdate = true;
return;
}
RenderObject* renderer = this->renderer();
if (!renderer)
return;
if (isLengthAttribute) {
if (toRenderSVGImage(renderer)->updateImageViewport())
markForLayoutAndParentResourceInvalidation(renderer);
return;
}
if (attrName == SVGNames::preserveAspectRatioAttr) {
markForLayoutAndParentResourceInvalidation(renderer);
return;
}
ASSERT_NOT_REACHED();
}
bool SVGImageElement::selfHasRelativeLengths() const
{
return m_x->currentValue()->isRelative()
|| m_y->currentValue()->isRelative()
|| m_width->currentValue()->isRelative()
|| m_height->currentValue()->isRelative();
}
RenderObject* SVGImageElement::createRenderer(RenderStyle*)
{
return new RenderSVGImage(this);
}
bool SVGImageElement::haveLoadedRequiredResources()
{
return !m_needsLoaderURIUpdate && !imageLoader().hasPendingActivity();
}
void SVGImageElement::attach(const AttachContext& context)
{
SVGGraphicsElement::attach(context);
if (RenderSVGImage* imageObj = toRenderSVGImage(renderer())) {
if (imageObj->imageResource()->hasImage())
return;
imageObj->imageResource()->setImageResource(imageLoader().image());
}
}
Node::InsertionNotificationRequest SVGImageElement::insertedInto(ContainerNode* rootParent)
{
SVGGraphicsElement::insertedInto(rootParent);
if (!rootParent->inDocument())
return InsertionDone;
// We can only resolve base URIs properly after tree insertion - hence, URI mutations while
// detached are deferred until this point.
if (m_needsLoaderURIUpdate) {
imageLoader().updateFromElement(ImageLoader::UpdateIgnorePreviousError);
m_needsLoaderURIUpdate = false;
} else {
// A previous loader update may have failed to actually fetch the image if the document
// was inactive. In that case, force a re-update (but don't clear previous errors).
if (!imageLoader().image())
imageLoader().updateFromElement();
}
return InsertionDone;
}
const AtomicString SVGImageElement::imageSourceURL() const
{
return AtomicString(hrefString());
}
void SVGImageElement::didMoveToNewDocument(Document& oldDocument)
{
imageLoader().elementDidMoveToNewDocument();
SVGGraphicsElement::didMoveToNewDocument(oldDocument);
}
} // namespace blink
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