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SVGFEImageElement.cpp

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00001 /*
00002     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
00003                   2004, 2005 Rob Buis <buis@kde.org>
00004 
00005     This file is part of the KDE project
00006 
00007     This library is free software; you can redistribute it and/or
00008     modify it under the terms of the GNU Library General Public
00009     License as published by the Free Software Foundation; either
00010     version 2 of the License, or (at your option) any later version.
00011 
00012     This library is distributed in the hope that it will be useful,
00013     but WITHOUT ANY WARRANTY; without even the implied warranty of
00014     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015     Library General Public License for more details.
00016 
00017     You should have received a copy of the GNU Library General Public License
00018     along with this library; see the file COPYING.LIB.  If not, write to
00019     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00020     Boston, MA 02110-1301, USA.
00021 */
00022 
00023 #include "config.h"
00024 
00025 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
00026 #include "SVGFEImageElement.h"
00027 
00028 #include "Attr.h"
00029 #include "CachedImage.h"
00030 #include "DocLoader.h"
00031 #include "Document.h"
00032 #include "SVGLength.h"
00033 #include "SVGNames.h"
00034 #include "SVGPreserveAspectRatio.h"
00035 #include "SVGResourceFilter.h"
00036 
00037 namespace WebCore {
00038 
00039 SVGFEImageElement::SVGFEImageElement(const QualifiedName& tagName, Document* doc)
00040     : SVGFilterPrimitiveStandardAttributes(tagName, doc)
00041     , SVGURIReference()
00042     , SVGLangSpace()
00043     , SVGExternalResourcesRequired()
00044     , m_preserveAspectRatio(SVGPreserveAspectRatio::create())
00045     , m_cachedImage(0)
00046     , m_filterEffect(0)
00047 {
00048 }
00049 
00050 SVGFEImageElement::~SVGFEImageElement()
00051 {
00052     delete m_filterEffect;
00053     if (m_cachedImage)
00054         m_cachedImage->removeClient(this);
00055 }
00056 
00057 ANIMATED_PROPERTY_DEFINITIONS(SVGFEImageElement, SVGPreserveAspectRatio*, PreserveAspectRatio, preserveAspectRatio, PreserveAspectRatio, preserveAspectRatio, SVGNames::preserveAspectRatioAttr, m_preserveAspectRatio.get())
00058 
00059 void SVGFEImageElement::parseMappedAttribute(MappedAttribute* attr)
00060 {
00061     const String& value = attr->value();
00062     if (attr->name() == SVGNames::preserveAspectRatioAttr) {
00063         const UChar* c = value.characters();
00064         const UChar* end = c + value.length();
00065         preserveAspectRatioBaseValue()->parsePreserveAspectRatio(c, end);
00066     } else {
00067         if (SVGURIReference::parseMappedAttribute(attr)) {
00068             if (!href().startsWith("#")) {
00069                 // FIXME: this code needs to special-case url fragments and later look them up using getElementById instead of loading them here
00070                 if (m_cachedImage)
00071                     m_cachedImage->removeClient(this);
00072                 m_cachedImage = ownerDocument()->docLoader()->requestImage(href());
00073                 if (m_cachedImage)
00074                     m_cachedImage->addClient(this);
00075             }
00076             return;
00077         }
00078         if (SVGLangSpace::parseMappedAttribute(attr))
00079             return;
00080         if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
00081             return;
00082 
00083         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
00084     }
00085 }
00086 
00087 void SVGFEImageElement::notifyFinished(CachedResource* finishedObj)
00088 {
00089     if (finishedObj == m_cachedImage && m_filterEffect)
00090         m_filterEffect->setCachedImage(m_cachedImage);
00091 }
00092 
00093 SVGFEImage* SVGFEImageElement::filterEffect(SVGResourceFilter* filter) const
00094 {
00095     if (!m_filterEffect)
00096         m_filterEffect = new SVGFEImage(filter);
00097     
00098     // The resource may already be loaded!
00099     if (m_cachedImage)
00100         m_filterEffect->setCachedImage(m_cachedImage);
00101 
00102     setStandardAttributes(m_filterEffect);
00103     return m_filterEffect;
00104 }
00105 
00106 void SVGFEImageElement::getSubresourceAttributeStrings(Vector<String>& urls) const
00107 {
00108     urls.append(href());
00109 }
00110 
00111 }
00112 
00113 #endif // ENABLE(SVG)
00114 
00115 // vim:ts=4:noet

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