1 /*
2 * Copyright (C) 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27
28 #if ENABLE(SVG)
29 #include "SVGResource.h"
30
31 #include "RenderPath.h"
32 #include "SVGElement.h"
33 #include "SVGStyledElement.h"
34 #include <wtf/HashSet.h>
35 #include <wtf/StdLibExtras.h>
36
37 namespace WebCore {
38
39 typedef HashSet<SVGResource*> ResourceSet;
40
resourceSet()41 static ResourceSet& resourceSet()
42 {
43 DEFINE_STATIC_LOCAL(ResourceSet, set, ());
44 return set;
45 }
46
SVGResource()47 SVGResource::SVGResource()
48 {
49 ASSERT(!resourceSet().contains(this));
50 resourceSet().add(this);
51 }
52
53
~SVGResource()54 SVGResource::~SVGResource()
55 {
56 ASSERT(resourceSet().contains(this));
57 resourceSet().remove(this);
58 }
59
invalidate()60 void SVGResource::invalidate()
61 {
62 HashSet<SVGStyledElement*>::const_iterator it = m_clients.begin();
63 const HashSet<SVGStyledElement*>::const_iterator end = m_clients.end();
64
65 for (; it != end; ++it) {
66 SVGStyledElement* cur = *it;
67
68 if (cur->renderer())
69 cur->renderer()->setNeedsLayout(true);
70
71 cur->invalidateResourcesInAncestorChain();
72 }
73 }
74
invalidateClients(HashSet<SVGStyledElement * > clients)75 void SVGResource::invalidateClients(HashSet<SVGStyledElement*> clients)
76 {
77 HashSet<SVGStyledElement*>::const_iterator it = clients.begin();
78 const HashSet<SVGStyledElement*>::const_iterator end = clients.end();
79
80 for (; it != end; ++it) {
81 SVGStyledElement* cur = *it;
82
83 if (cur->renderer())
84 cur->renderer()->setNeedsLayout(true);
85
86 cur->invalidateResourcesInAncestorChain();
87 }
88 }
89
removeClient(SVGStyledElement * item)90 void SVGResource::removeClient(SVGStyledElement* item)
91 {
92 ResourceSet::iterator it = resourceSet().begin();
93 ResourceSet::iterator end = resourceSet().end();
94
95 for (; it != end; ++it) {
96 SVGResource* resource = *it;
97 if (!resource->m_clients.contains(item))
98 continue;
99 resource->m_clients.remove(item);
100 }
101 }
102
addClient(SVGStyledElement * item)103 void SVGResource::addClient(SVGStyledElement* item)
104 {
105 if (m_clients.contains(item))
106 return;
107
108 m_clients.add(item);
109 }
110
externalRepresentation(TextStream & ts) const111 TextStream& SVGResource::externalRepresentation(TextStream& ts) const
112 {
113 return ts;
114 }
115
getResourceById(Document * document,const AtomicString & id,const RenderObject * object)116 SVGResource* getResourceById(Document* document, const AtomicString& id, const RenderObject* object)
117 {
118 if (id.isEmpty())
119 return 0;
120
121 Element* element = document->getElementById(id);
122 SVGElement* svgElement = 0;
123 if (element && element->isSVGElement())
124 svgElement = static_cast<SVGElement*>(element);
125
126 if (svgElement && svgElement->isStyled())
127 return static_cast<SVGStyledElement*>(svgElement)->canvasResource(object);
128
129 return 0;
130 }
131
operator <<(TextStream & ts,const SVGResource & r)132 TextStream& operator<<(TextStream& ts, const SVGResource& r)
133 {
134 return r.externalRepresentation(ts);
135 }
136
137 }
138
139 #endif
140