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      1 /*
      2  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis (at) 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 #include "core/svg/SVGClipPathElement.h"
     25 
     26 #include "core/rendering/svg/RenderSVGResourceClipper.h"
     27 
     28 namespace WebCore {
     29 
     30 inline SVGClipPathElement::SVGClipPathElement(Document& document)
     31     : SVGGraphicsElement(SVGNames::clipPathTag, document)
     32     , m_clipPathUnits(SVGAnimatedEnumeration<SVGUnitTypes::SVGUnitType>::create(this, SVGNames::clipPathUnitsAttr, SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE))
     33 {
     34     ScriptWrappable::init(this);
     35     addToPropertyMap(m_clipPathUnits);
     36 }
     37 
     38 DEFINE_NODE_FACTORY(SVGClipPathElement)
     39 
     40 bool SVGClipPathElement::isSupportedAttribute(const QualifiedName& attrName)
     41 {
     42     DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
     43     if (supportedAttributes.isEmpty())
     44         supportedAttributes.add(SVGNames::clipPathUnitsAttr);
     45 
     46     return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
     47 }
     48 
     49 void SVGClipPathElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
     50 {
     51     if (!isSupportedAttribute(name)) {
     52         SVGGraphicsElement::parseAttribute(name, value);
     53         return;
     54     }
     55 
     56     SVGParsingError parseError = NoError;
     57 
     58     if (name == SVGNames::clipPathUnitsAttr)
     59         m_clipPathUnits->setBaseValueAsString(value, parseError);
     60     else
     61         ASSERT_NOT_REACHED();
     62 
     63     reportAttributeParsingError(parseError, name, value);
     64 }
     65 
     66 void SVGClipPathElement::svgAttributeChanged(const QualifiedName& attrName)
     67 {
     68     if (!isSupportedAttribute(attrName)) {
     69         SVGGraphicsElement::svgAttributeChanged(attrName);
     70         return;
     71     }
     72 
     73     SVGElement::InvalidationGuard invalidationGuard(this);
     74 
     75     RenderSVGResourceContainer* renderer = toRenderSVGResourceContainer(this->renderer());
     76     if (renderer)
     77         renderer->invalidateCacheAndMarkForLayout();
     78 }
     79 
     80 void SVGClipPathElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
     81 {
     82     SVGGraphicsElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
     83 
     84     if (changedByParser)
     85         return;
     86 
     87     if (RenderObject* object = renderer())
     88         object->setNeedsLayoutAndFullPaintInvalidation();
     89 }
     90 
     91 RenderObject* SVGClipPathElement::createRenderer(RenderStyle*)
     92 {
     93     return new RenderSVGResourceClipper(this);
     94 }
     95 
     96 }
     97