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
SVGFEImageElement(const QualifiedName & tagName,Document * doc)39 SVGFEImageElement::SVGFEImageElement(const QualifiedName& tagName, Document* doc)
40 : SVGFilterPrimitiveStandardAttributes(tagName, doc)
41 , SVGURIReference()
42 , SVGLangSpace()
43 , SVGExternalResourcesRequired()
44 , m_preserveAspectRatio(this, SVGNames::preserveAspectRatioAttr, SVGPreserveAspectRatio::create())
45 , m_cachedImage(0)
46 , m_filterEffect(0)
47 {
48 }
49
~SVGFEImageElement()50 SVGFEImageElement::~SVGFEImageElement()
51 {
52 if (m_cachedImage)
53 m_cachedImage->removeClient(this);
54 }
55
parseMappedAttribute(MappedAttribute * attr)56 void SVGFEImageElement::parseMappedAttribute(MappedAttribute* attr)
57 {
58 const String& value = attr->value();
59 if (attr->name() == SVGNames::preserveAspectRatioAttr) {
60 const UChar* c = value.characters();
61 const UChar* end = c + value.length();
62 preserveAspectRatioBaseValue()->parsePreserveAspectRatio(c, end);
63 } else {
64 if (SVGURIReference::parseMappedAttribute(attr)) {
65 if (!href().startsWith("#")) {
66 // FIXME: this code needs to special-case url fragments and later look them up using getElementById instead of loading them here
67 if (m_cachedImage)
68 m_cachedImage->removeClient(this);
69 m_cachedImage = ownerDocument()->docLoader()->requestImage(href());
70 if (m_cachedImage)
71 m_cachedImage->addClient(this);
72 }
73 return;
74 }
75 if (SVGLangSpace::parseMappedAttribute(attr))
76 return;
77 if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
78 return;
79
80 SVGFilterPrimitiveStandardAttributes::parseMappedAttribute(attr);
81 }
82 }
83
notifyFinished(CachedResource * finishedObj)84 void SVGFEImageElement::notifyFinished(CachedResource* finishedObj)
85 {
86 if (finishedObj == m_cachedImage && m_filterEffect)
87 m_filterEffect->setCachedImage(m_cachedImage.get());
88 }
89
filterEffect(SVGResourceFilter * filter) const90 SVGFilterEffect* SVGFEImageElement::filterEffect(SVGResourceFilter* filter) const
91 {
92 ASSERT_NOT_REACHED();
93 return 0;
94 }
95
build(FilterBuilder * builder)96 bool SVGFEImageElement::build(FilterBuilder* builder)
97 {
98 if(!m_cachedImage)
99 return false;
100
101 builder->add(result(), FEImage::create(m_cachedImage.get()));
102
103 return true;
104 }
105
addSubresourceAttributeURLs(ListHashSet<KURL> & urls) const106 void SVGFEImageElement::addSubresourceAttributeURLs(ListHashSet<KURL>& urls) const
107 {
108 SVGFilterPrimitiveStandardAttributes::addSubresourceAttributeURLs(urls);
109
110 addSubresourceURL(urls, document()->completeURL(href()));
111 }
112
113 }
114
115 #endif // ENABLE(SVG)
116