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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>
* Copyright (C) 2014 Adobe Systems Incorporated. All rights reserved.
* Copyright (C) 2018-2024 Apple Inc. All rights reserved.
*
* 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 "SVGImageElement.h"
#include "CSSPropertyNames.h"
#include "HTMLParserIdioms.h"
#include "LegacyRenderSVGImage.h"
#include "LegacyRenderSVGResource.h"
#include "NodeName.h"
#include "RenderImageResource.h"
#include "RenderSVGImage.h"
#include "SVGElementInlines.h"
#include "SVGNames.h"
#include "XLinkNames.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED_IMPL(SVGImageElement);
inline SVGImageElement::SVGImageElement(const QualifiedName& tagName, Document& document)
: SVGGraphicsElement(tagName, document, makeUniqueRef<PropertyRegistry>(*this), TypeFlag::HasDidMoveToNewDocument)
, SVGURIReference(this)
, m_imageLoader(*this)
{
ASSERT(hasTagName(SVGNames::imageTag));
static std::once_flag onceFlag;
std::call_once(onceFlag, [] {
PropertyRegistry::registerProperty<SVGNames::xAttr, &SVGImageElement::m_x>();
PropertyRegistry::registerProperty<SVGNames::yAttr, &SVGImageElement::m_y>();
PropertyRegistry::registerProperty<SVGNames::widthAttr, &SVGImageElement::m_width>();
PropertyRegistry::registerProperty<SVGNames::heightAttr, &SVGImageElement::m_height>();
PropertyRegistry::registerProperty<SVGNames::preserveAspectRatioAttr, &SVGImageElement::m_preserveAspectRatio>();
});
}
Ref<SVGImageElement> SVGImageElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new SVGImageElement(tagName, document));
}
CachedImage* SVGImageElement::cachedImage() const
{
return m_imageLoader.image();
}
bool SVGImageElement::renderingTaintsOrigin() const
{
CachedResourceHandle cachedImage = this->cachedImage();
if (!cachedImage)
return false;
RefPtr image = cachedImage->image();
if (!image)
return false;
if (image->renderingTaintsOrigin())
return true;
if (image->sourceURL().protocolIsData())
return false;
return cachedImage->isCORSCrossOrigin();
}
void SVGImageElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
SVGParsingError parseError = NoError;
switch (name.nodeName()) {
case AttributeNames::preserveAspectRatioAttr:
Ref { m_preserveAspectRatio }->setBaseValInternal(SVGPreserveAspectRatioValue { newValue });
return;
case AttributeNames::xAttr:
Ref { m_x }->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, newValue, parseError));
break;
case AttributeNames::yAttr:
Ref { m_y }->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, newValue, parseError));
break;
case AttributeNames::widthAttr:
Ref { m_width }->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Width, newValue, parseError, SVGLengthNegativeValuesMode::Forbid));
break;
case AttributeNames::heightAttr:
Ref { m_height }->setBaseValInternal(SVGLengthValue::construct(SVGLengthMode::Height, newValue, parseError, SVGLengthNegativeValuesMode::Forbid));
break;
case AttributeNames::crossoriginAttr:
if (parseCORSSettingsAttribute(oldValue) != parseCORSSettingsAttribute(newValue))
m_imageLoader.updateFromElementIgnoringPreviousError(RelevantMutation::Yes);
break;
default:
break;
}
reportAttributeParsingError(parseError, name, newValue);
SVGURIReference::parseAttribute(name, newValue);
SVGGraphicsElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
}
void SVGImageElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (PropertyRegistry::isKnownAttribute(attrName)) {
InstanceInvalidationGuard guard(*this);
if (attrName == SVGNames::xAttr || attrName == SVGNames::yAttr) {
updateRelativeLengthsInformation();
if (is<RenderSVGImage>(renderer()))
updateSVGRendererForElementChange();
if (CheckedPtr image = dynamicDowncast<LegacyRenderSVGImage>(renderer())) {
if (!image->updateImageViewport())
return;
updateSVGRendererForElementChange();
}
} else if (attrName == SVGNames::widthAttr || attrName == SVGNames::heightAttr)
setPresentationalHintStyleIsDirty();
else {
ASSERT(attrName == SVGNames::preserveAspectRatioAttr);
updateSVGRendererForElementChange();
}
invalidateResourceImageBuffersIfNeeded();
return;
}
if (SVGURIReference::isKnownAttribute(attrName)) {
m_imageLoader.updateFromElementIgnoringPreviousError();
invalidateResourceImageBuffersIfNeeded();
return;
}
SVGGraphicsElement::svgAttributeChanged(attrName);
}
RenderPtr<RenderElement> SVGImageElement::createElementRenderer(RenderStyle&& style, const RenderTreePosition&)
{
if (document().settings().layerBasedSVGEngineEnabled())
return createRenderer<RenderSVGImage>(*this, WTFMove(style));
return createRenderer<LegacyRenderSVGImage>(*this, WTFMove(style));
}
bool SVGImageElement::haveLoadedRequiredResources()
{
return !m_imageLoader.hasPendingActivity();
}
void SVGImageElement::didAttachRenderers()
{
SVGGraphicsElement::didAttachRenderers();
if (CheckedPtr image = dynamicDowncast<RenderSVGImage>(renderer()); image && !image->imageResource().cachedImage()) {
image->checkedImageResource()->setCachedImage(m_imageLoader.protectedImage());
return;
}
if (CheckedPtr image = dynamicDowncast<LegacyRenderSVGImage>(renderer()); image && !image->imageResource().cachedImage()) {
image->checkedImageResource()->setCachedImage(m_imageLoader.protectedImage());
return;
}
}
Node::InsertedIntoAncestorResult SVGImageElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
auto result = SVGGraphicsElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
if (!insertionType.connectedToDocument)
return InsertedIntoAncestorResult::Done;
// Update image loader, as soon as we're living in the tree.
// We can only resolve base URIs properly, after that!
m_imageLoader.updateFromElement();
return result;
}
const AtomString& SVGImageElement::imageSourceURL() const
{
return getAttribute(SVGNames::hrefAttr, XLinkNames::hrefAttr);
}
void SVGImageElement::setCrossOrigin(const AtomString& value)
{
setAttributeWithoutSynchronization(HTMLNames::crossoriginAttr, value);
}
String SVGImageElement::crossOrigin() const
{
return parseCORSSettingsAttribute(attributeWithoutSynchronization(HTMLNames::crossoriginAttr));
}
void SVGImageElement::addSubresourceAttributeURLs(ListHashSet<URL>& urls) const
{
SVGGraphicsElement::addSubresourceAttributeURLs(urls);
addSubresourceURL(urls, document().completeURL(href()));
}
void SVGImageElement::didMoveToNewDocument(Document& oldDocument, Document& newDocument)
{
m_imageLoader.elementDidMoveToNewDocument(oldDocument);
SVGGraphicsElement::didMoveToNewDocument(oldDocument, newDocument);
}
void SVGImageElement::decode(Ref<DeferredPromise>&& promise)
{
return m_imageLoader.decode(WTFMove(promise));
}
}
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