2 * Copyright (C) 2004, 2005, 2006, 2007 Nikolas Zimmermann <zimmermann@kde.org>
3 * Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
4 * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
5 * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
6 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
26 #include "core/svg/SVGFilterElement.h"
28 #include "core/XLinkNames.h"
29 #include "core/rendering/svg/RenderSVGResourceFilter.h"
30 #include "core/svg/SVGParserUtilities.h"
34 inline SVGFilterElement::SVGFilterElement(Document& document)
35 : SVGElement(SVGNames::filterTag, document)
36 , SVGURIReference(this)
37 , m_x(SVGAnimatedLength::create(this, SVGNames::xAttr, SVGLength::create(LengthModeWidth), AllowNegativeLengths))
38 , m_y(SVGAnimatedLength::create(this, SVGNames::yAttr, SVGLength::create(LengthModeHeight), AllowNegativeLengths))
39 , m_width(SVGAnimatedLength::create(this, SVGNames::widthAttr, SVGLength::create(LengthModeWidth), ForbidNegativeLengths))
40 , m_height(SVGAnimatedLength::create(this, SVGNames::heightAttr, SVGLength::create(LengthModeHeight), ForbidNegativeLengths))
41 , m_filterUnits(SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>::create(this, SVGNames::filterUnitsAttr, SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX))
42 , m_primitiveUnits(SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>::create(this, SVGNames::primitiveUnitsAttr, SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE))
43 , m_filterRes(SVGAnimatedIntegerOptionalInteger::create(this, SVGNames::filterResAttr))
45 // Spec: If the x/y attribute is not specified, the effect is as if a value of "-10%" were specified.
46 // Spec: If the width/height attribute is not specified, the effect is as if a value of "120%" were specified.
47 m_x->setDefaultValueAsString("-10%");
48 m_y->setDefaultValueAsString("-10%");
49 m_width->setDefaultValueAsString("120%");
50 m_height->setDefaultValueAsString("120%");
52 addToPropertyMap(m_x);
53 addToPropertyMap(m_y);
54 addToPropertyMap(m_width);
55 addToPropertyMap(m_height);
56 addToPropertyMap(m_filterUnits);
57 addToPropertyMap(m_primitiveUnits);
58 addToPropertyMap(m_filterRes);
61 DEFINE_NODE_FACTORY(SVGFilterElement)
63 void SVGFilterElement::trace(Visitor* visitor)
66 visitor->trace(m_clientsToAdd);
68 SVGElement::trace(visitor);
71 void SVGFilterElement::setFilterRes(unsigned x, unsigned y)
73 filterResX()->baseValue()->setValue(x);
74 filterResY()->baseValue()->setValue(y);
76 invalidateSVGAttributes();
77 svgAttributeChanged(SVGNames::filterResAttr);
80 bool SVGFilterElement::isSupportedAttribute(const QualifiedName& attrName)
82 DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
83 if (supportedAttributes.isEmpty()) {
84 SVGURIReference::addSupportedAttributes(supportedAttributes);
85 supportedAttributes.add(SVGNames::filterUnitsAttr);
86 supportedAttributes.add(SVGNames::primitiveUnitsAttr);
87 supportedAttributes.add(SVGNames::xAttr);
88 supportedAttributes.add(SVGNames::yAttr);
89 supportedAttributes.add(SVGNames::widthAttr);
90 supportedAttributes.add(SVGNames::heightAttr);
91 supportedAttributes.add(SVGNames::filterResAttr);
93 return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
96 void SVGFilterElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
98 parseAttributeNew(name, value);
101 void SVGFilterElement::svgAttributeChanged(const QualifiedName& attrName)
103 if (!isSupportedAttribute(attrName)) {
104 SVGElement::svgAttributeChanged(attrName);
108 SVGElement::InvalidationGuard invalidationGuard(this);
110 if (attrName == SVGNames::xAttr
111 || attrName == SVGNames::yAttr
112 || attrName == SVGNames::widthAttr
113 || attrName == SVGNames::heightAttr)
114 updateRelativeLengthsInformation();
116 RenderSVGResourceContainer* renderer = toRenderSVGResourceContainer(this->renderer());
118 renderer->invalidateCacheAndMarkForLayout();
121 void SVGFilterElement::childrenChanged(const ChildrenChange& change)
123 SVGElement::childrenChanged(change);
128 if (RenderObject* object = renderer())
129 object->setNeedsLayoutAndFullPaintInvalidation();
132 RenderObject* SVGFilterElement::createRenderer(RenderStyle*)
134 RenderSVGResourceFilter* renderer = new RenderSVGResourceFilter(this);
136 WillBeHeapHashSet<RefPtrWillBeMember<Node> >::iterator layerEnd = m_clientsToAdd.end();
137 for (WillBeHeapHashSet<RefPtrWillBeMember<Node> >::iterator it = m_clientsToAdd.begin(); it != layerEnd; ++it)
138 renderer->addClientRenderLayer(it->get());
139 m_clientsToAdd.clear();
144 bool SVGFilterElement::selfHasRelativeLengths() const
146 return m_x->currentValue()->isRelative()
147 || m_y->currentValue()->isRelative()
148 || m_width->currentValue()->isRelative()
149 || m_height->currentValue()->isRelative();
152 void SVGFilterElement::addClient(Node* client)
155 m_clientsToAdd.add(client);
158 void SVGFilterElement::removeClient(Node* client)
161 m_clientsToAdd.remove(client);