File indexing completed on 2024-04-28 15:24:31

 /*
     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
                   2004, 2005 Rob Buis <buis@kde.org>
 
     This file is part of the KDE project
 
     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.
 */
 
 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
 #include "SVGFEImageElement.h"
 
 #include "Attr.h"
 #include "CachedImage.h"
 #include "DocLoader.h"
 #include "Document.h"
 #include "SVGLength.h"
 #include "SVGNames.h"
 #include "SVGPreserveAspectRatio.h"
 #include "SVGResourceFilter.h"
 
 namespace WebCore
 {
 
 SVGFEImageElement::SVGFEImageElement(const QualifiedName &tagName, Document *doc)
     : SVGFilterPrimitiveStandardAttributes(tagName, doc)
     , SVGURIReference()
     , SVGLangSpace()
     , SVGExternalResourcesRequired()
     , m_preserveAspectRatio(SVGPreserveAspectRatio::create())
     , m_cachedImage(0)
     , m_filterEffect(0)
 {
 }
 
 SVGFEImageElement::~SVGFEImageElement()
 {
     delete m_filterEffect;
     if (m_cachedImage) {
         m_cachedImage->removeClient(this);
     }
 }
 
 ANIMATED_PROPERTY_DEFINITIONS(SVGFEImageElement, SVGPreserveAspectRatio *, PreserveAspectRatio, preserveAspectRatio, PreserveAspectRatio, preserveAspectRatio, SVGNames::preserveAspectRatioAttr, m_preserveAspectRatio.get())
 
 void SVGFEImageElement::parseMappedAttribute(MappedAttribute *attr)
 {
     const String &value = attr->value();
     if (attr->name() == SVGNames::preserveAspectRatioAttr) {
         const UChar *c = value.characters();
         const UChar *end = c + value.length();
         preserveAspectRatioBaseValue()->parsePreserveAspectRatio(c, end);
     } else {
         if (SVGURIReference::parseMappedAttribute(attr)) {
             if (!href().startsWith("#")) {
                 // FIXME: this code needs to special-case url fragments and later look them up using getElementById instead of loading them here
                 if (m_cachedImage) {
                     m_cachedImage->removeClient(this);
                 }
                 m_cachedImage = ownerDocument()->docLoader()->requestImage(href());
                 if (m_cachedImage) {
                     m_cachedImage->addClient(this);
                 }
             }
             return;
         }
         if (SVGLangSpace::parseMappedAttribute(attr)) {
             return;
         }
         if (SVGExternalResourcesRequired::parseMappedAttribute(attr)) {
             return;
         }
 
         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
     }
 }
 
 void SVGFEImageElement::notifyFinished(CachedResource *finishedObj)
 {
     if (finishedObj == m_cachedImage && m_filterEffect) {
         m_filterEffect->setCachedImage(m_cachedImage);
     }
 }
 
 SVGFEImage *SVGFEImageElement::filterEffect(SVGResourceFilter *filter) const
 {
     if (!m_filterEffect) {
         m_filterEffect = new SVGFEImage(filter);
     }
 
     // The resource may already be loaded!
     if (m_cachedImage) {
         m_filterEffect->setCachedImage(m_cachedImage);
     }
 
     setStandardAttributes(m_filterEffect);
     return m_filterEffect;
 }
 
 void SVGFEImageElement::getSubresourceAttributeStrings(Vector<String> &urls) const
 {
     urls.append(href());
 }
 
 }
 
 #endif // ENABLE(SVG)