1/*
2 * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
4 * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Library General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14 * Library General Public License for more details.
15 *
16 * You should have received a copy of the GNU Library General Public License
17 * along with this library; see the file COPYING.LIB.  If not, write to
18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
19 * Boston, MA 02110-1301, USA.
20 */
21
22#include "config.h"
23
24#if ENABLE(SVG)
25#include "SVGClipPathElement.h"
26
27#include "Attribute.h"
28#include "Document.h"
29#include "RenderSVGResourceClipper.h"
30#include "SVGElementInstance.h"
31#include "SVGNames.h"
32#include "SVGTransformList.h"
33#include "StyleResolver.h"
34
35namespace WebCore {
36
37// Animated property definitions
38DEFINE_ANIMATED_ENUMERATION(SVGClipPathElement, SVGNames::clipPathUnitsAttr, ClipPathUnits, clipPathUnits, SVGUnitTypes::SVGUnitType)
39DEFINE_ANIMATED_BOOLEAN(SVGClipPathElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
40
41BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGClipPathElement)
42    REGISTER_LOCAL_ANIMATED_PROPERTY(clipPathUnits)
43    REGISTER_LOCAL_ANIMATED_PROPERTY(externalResourcesRequired)
44    REGISTER_PARENT_ANIMATED_PROPERTIES(SVGStyledTransformableElement)
45    REGISTER_PARENT_ANIMATED_PROPERTIES(SVGTests)
46END_REGISTER_ANIMATED_PROPERTIES
47
48inline SVGClipPathElement::SVGClipPathElement(const QualifiedName& tagName, Document* document)
49    : SVGStyledTransformableElement(tagName, document)
50    , m_clipPathUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
51{
52    ASSERT(hasTagName(SVGNames::clipPathTag));
53    registerAnimatedPropertiesForSVGClipPathElement();
54}
55
56PassRefPtr<SVGClipPathElement> SVGClipPathElement::create(const QualifiedName& tagName, Document* document)
57{
58    return adoptRef(new SVGClipPathElement(tagName, document));
59}
60
61bool SVGClipPathElement::isSupportedAttribute(const QualifiedName& attrName)
62{
63    DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
64    if (supportedAttributes.isEmpty()) {
65        SVGTests::addSupportedAttributes(supportedAttributes);
66        SVGLangSpace::addSupportedAttributes(supportedAttributes);
67        SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
68        supportedAttributes.add(SVGNames::clipPathUnitsAttr);
69    }
70    return supportedAttributes.contains<QualifiedName, SVGAttributeHashTranslator>(attrName);
71}
72
73void SVGClipPathElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
74{
75    if (!isSupportedAttribute(name)) {
76        SVGStyledTransformableElement::parseAttribute(name, value);
77        return;
78    }
79
80    if (name == SVGNames::clipPathUnitsAttr) {
81        SVGUnitTypes::SVGUnitType propertyValue = SVGPropertyTraits<SVGUnitTypes::SVGUnitType>::fromString(value);
82        if (propertyValue > 0)
83            setClipPathUnitsBaseValue(propertyValue);
84        return;
85    }
86
87    if (SVGTests::parseAttribute(name, value))
88        return;
89    if (SVGLangSpace::parseAttribute(name, value))
90        return;
91    if (SVGExternalResourcesRequired::parseAttribute(name, value))
92        return;
93
94    ASSERT_NOT_REACHED();
95}
96
97void SVGClipPathElement::svgAttributeChanged(const QualifiedName& attrName)
98{
99    if (!isSupportedAttribute(attrName)) {
100        SVGStyledTransformableElement::svgAttributeChanged(attrName);
101        return;
102    }
103
104    SVGElementInstance::InvalidationGuard invalidationGuard(this);
105
106    if (RenderObject* object = renderer())
107        object->setNeedsLayout(true);
108}
109
110void SVGClipPathElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
111{
112    SVGStyledTransformableElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
113
114    if (changedByParser)
115        return;
116
117    if (RenderObject* object = renderer())
118        object->setNeedsLayout(true);
119}
120
121RenderObject* SVGClipPathElement::createRenderer(RenderArena* arena, RenderStyle*)
122{
123    return new (arena) RenderSVGResourceClipper(this);
124}
125
126}
127
128#endif // ENABLE(SVG)
129