khtml/svg/SVGFEImageElement.cpp

   1 /*
   2     Copyright (C) 2004, 2005, 2007 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005 Rob Buis <buis@kde.org>
   4
   5     This file is part of the KDE project
   6
   7     This library is free software; you can redistribute it and/or
   8     modify it under the terms of the GNU Library General Public
   9     License as published by the Free Software Foundation; either
  10     version 2 of the License, or (at your option) any later version.
  11
  12     This library is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15     Library General Public License for more details.
  16
  17     You should have received a copy of the GNU Library General Public License
  18     along with this library; see the file COPYING.LIB.  If not, write to
  19     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20     Boston, MA 02110-1301, USA.
  21 */
  22
  23 #include "config.h"
  24
  25 #if ENABLE(SVG) && ENABLE(SVG_FILTERS)
  26 #include "SVGFEImageElement.h"
  27
  28 #include "Attr.h"
  29 #include "CachedImage.h"
  30 #include "DocLoader.h"
  31 #include "Document.h"
  32 #include "SVGLength.h"
  33 #include "SVGNames.h"
  34 #include "SVGPreserveAspectRatio.h"
  35 #include "SVGResourceFilter.h"
  36
  37 namespace WebCore {
  38
  39 SVGFEImageElement::SVGFEImageElement(const QualifiedName& tagName, Document* doc)
  40     : SVGFilterPrimitiveStandardAttributes(tagName, doc)
  41     , SVGURIReference()
  42     , SVGLangSpace()
  43     , SVGExternalResourcesRequired()
  44     , m_preserveAspectRatio(SVGPreserveAspectRatio::create())
  45     , m_cachedImage(0)
  46     , m_filterEffect(0)
  47 {
  48 }
  49
  50 SVGFEImageElement::~SVGFEImageElement()
  51 {
  52     delete m_filterEffect;
  53     if (m_cachedImage)
  54         m_cachedImage->removeClient(this);
  55 }
  56
  57 ANIMATED_PROPERTY_DEFINITIONS(SVGFEImageElement, SVGPreserveAspectRatio*, PreserveAspectRatio, preserveAspectRatio, PreserveAspectRatio, preserveAspectRatio, SVGNames::preserveAspectRatioAttr, m_preserveAspectRatio.get())
  58
  59 void SVGFEImageElement::parseMappedAttribute(MappedAttribute* attr)
  60 {
  61     const String& value = attr->value();
  62     if (attr->name() == SVGNames::preserveAspectRatioAttr) {
  63         const UChar* c = value.characters();
  64         const UChar* end = c + value.length();
  65         preserveAspectRatioBaseValue()->parsePreserveAspectRatio(c, end);
  66     } else {
  67         if (SVGURIReference::parseMappedAttribute(attr)) {
  68             if (!href().startsWith("#")) {
  69                 // FIXME: this code needs to special-case url fragments and later look them up using getElementById instead of loading them here
  70                 if (m_cachedImage)
  71                     m_cachedImage->removeClient(this);
  72                 m_cachedImage = ownerDocument()->docLoader()->requestImage(href());
  73                 if (m_cachedImage)
  74                     m_cachedImage->addClient(this);
  75             }
  76             return;
  77         }
  78         if (SVGLangSpace::parseMappedAttribute(attr))
  79             return;
  80         if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
  81             return;
  82
  83         SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
  84     }
  85 }
  86
  87 void SVGFEImageElement::notifyFinished(CachedResource* finishedObj)
  88 {
  89     if (finishedObj == m_cachedImage && m_filterEffect)
  90         m_filterEffect->setCachedImage(m_cachedImage);
  91 }
  92
  93 SVGFEImage* SVGFEImageElement::filterEffect(SVGResourceFilter* filter) const
  94 {
  95     if (!m_filterEffect)
  96         m_filterEffect = new SVGFEImage(filter);
  97
  98     // The resource may already be loaded!
  99     if (m_cachedImage)
 100         m_filterEffect->setCachedImage(m_cachedImage);
 101
 102     setStandardAttributes(m_filterEffect);
 103     return m_filterEffect;
 104 }
 105
 106 void SVGFEImageElement::getSubresourceAttributeStrings(Vector<String>& urls) const
 107 {
 108     urls.append(href());
 109 }
 110
 111 }
 112
 113 #endif // ENABLE(SVG)
 114
 115 // vim:ts=4:noet