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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 "core/svg/SVGImageElement.h"
#include "core/CSSPropertyNames.h"
#include "core/dom/StyleChangeReason.h"
#include "core/layout/LayoutImageResource.h"
#include "core/layout/svg/LayoutSVGImage.h"
namespace blink {
inline SVGImageElement::SVGImageElement(Document& document)
: SVGGraphicsElement(SVGNames::imageTag, document),
SVGURIReference(this),
m_x(SVGAnimatedLength::create(this,
SVGNames::xAttr,
SVGLength::create(SVGLengthMode::Width),
CSSPropertyX)),
m_y(SVGAnimatedLength::create(this,
SVGNames::yAttr,
SVGLength::create(SVGLengthMode::Height),
CSSPropertyY)),
m_width(SVGAnimatedLength::create(this,
SVGNames::widthAttr,
SVGLength::create(SVGLengthMode::Width),
CSSPropertyWidth)),
m_height(
SVGAnimatedLength::create(this,
SVGNames::heightAttr,
SVGLength::create(SVGLengthMode::Height),
CSSPropertyHeight)),
m_preserveAspectRatio(SVGAnimatedPreserveAspectRatio::create(
this,
SVGNames::preserveAspectRatioAttr)),
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)
DEFINE_TRACE(SVGImageElement) {
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 (LayoutSVGImage* layoutSVGImage = toLayoutSVGImage(layoutObject())) {
if (layoutSVGImage->imageResource()->hasImage()) {
if (Image* image =
layoutSVGImage->imageResource()->cachedImage()->getImage())
return image->currentFrameHasSingleSecurityOrigin();
}
}
return true;
}
void SVGImageElement::collectStyleForPresentationAttribute(
const QualifiedName& name,
const AtomicString& value,
MutableStylePropertySet* style) {
SVGAnimatedPropertyBase* property = propertyFromAttribute(name);
if (property == m_width) {
addPropertyToPresentationAttributeStyle(style, CSSPropertyWidth,
m_width->cssValue());
} else if (property == m_height) {
addPropertyToPresentationAttributeStyle(style, CSSPropertyHeight,
m_height->cssValue());
} else if (property == m_x) {
addPropertyToPresentationAttributeStyle(style, CSSPropertyX,
m_x->cssValue());
} else if (property == m_y) {
addPropertyToPresentationAttributeStyle(style, CSSPropertyY,
m_y->cssValue());
} else {
SVGGraphicsElement::collectStyleForPresentationAttribute(name, value,
style);
}
}
void SVGImageElement::svgAttributeChanged(const QualifiedName& attrName) {
bool isLengthAttribute =
attrName == SVGNames::xAttr || attrName == SVGNames::yAttr ||
attrName == SVGNames::widthAttr || attrName == SVGNames::heightAttr;
if (isLengthAttribute || attrName == SVGNames::preserveAspectRatioAttr) {
SVGElement::InvalidationGuard invalidationGuard(this);
if (isLengthAttribute) {
invalidateSVGPresentationAttributeStyle();
setNeedsStyleRecalc(LocalStyleChange,
StyleChangeReasonForTracing::fromAttribute(attrName));
updateRelativeLengthsInformation();
}
LayoutObject* object = this->layoutObject();
if (!object)
return;
// FIXME: if isLengthAttribute then we should avoid this call if the
// viewport didn't change, however since we don't have the computed
// style yet we can't use updateBoundingBox/updateImageContainerSize.
// See http://crbug.com/466200.
markForLayoutAndParentResourceInvalidation(object);
return;
}
if (SVGURIReference::isKnownAttribute(attrName)) {
SVGElement::InvalidationGuard invalidationGuard(this);
if (isConnected())
imageLoader().updateFromElement(ImageLoader::UpdateIgnorePreviousError);
else
m_needsLoaderURIUpdate = true;
return;
}
SVGGraphicsElement::svgAttributeChanged(attrName);
}
bool SVGImageElement::selfHasRelativeLengths() const {
return m_x->currentValue()->isRelative() ||
m_y->currentValue()->isRelative() ||
m_width->currentValue()->isRelative() ||
m_height->currentValue()->isRelative();
}
LayoutObject* SVGImageElement::createLayoutObject(const ComputedStyle&) {
return new LayoutSVGImage(this);
}
bool SVGImageElement::haveLoadedRequiredResources() {
return !m_needsLoaderURIUpdate && !imageLoader().hasPendingActivity();
}
void SVGImageElement::attachLayoutTree(const AttachContext& context) {
SVGGraphicsElement::attachLayoutTree(context);
if (LayoutSVGImage* imageObj = toLayoutSVGImage(layoutObject())) {
if (imageObj->imageResource()->hasImage())
return;
imageObj->imageResource()->setImageResource(imageLoader().image());
}
}
Node::InsertionNotificationRequest SVGImageElement::insertedInto(
ContainerNode* rootParent) {
SVGGraphicsElement::insertedInto(rootParent);
if (!rootParent->isConnected())
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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