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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 #if ENABLE(SVG)
     25 #include "SVGClipPathElement.h"
     26 
     27 #include "Attribute.h"
     28 #include "CSSStyleSelector.h"
     29 #include "Document.h"
     30 #include "RenderSVGResourceClipper.h"
     31 #include "SVGNames.h"
     32 #include "SVGTransformList.h"
     33 #include "SVGUnitTypes.h"
     34 
     35 namespace WebCore {
     36 
     37 // Animated property definitions
     38 DEFINE_ANIMATED_ENUMERATION(SVGClipPathElement, SVGNames::clipPathUnitsAttr, ClipPathUnits, clipPathUnits)
     39 DEFINE_ANIMATED_BOOLEAN(SVGClipPathElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
     40 
     41 inline SVGClipPathElement::SVGClipPathElement(const QualifiedName& tagName, Document* document)
     42     : SVGStyledTransformableElement(tagName, document)
     43     , m_clipPathUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
     44 {
     45 }
     46 
     47 PassRefPtr<SVGClipPathElement> SVGClipPathElement::create(const QualifiedName& tagName, Document* document)
     48 {
     49     return adoptRef(new SVGClipPathElement(tagName, document));
     50 }
     51 
     52 void SVGClipPathElement::parseMappedAttribute(Attribute* attr)
     53 {
     54     if (attr->name() == SVGNames::clipPathUnitsAttr) {
     55         if (attr->value() == "userSpaceOnUse")
     56             setClipPathUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
     57         else if (attr->value() == "objectBoundingBox")
     58             setClipPathUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
     59     } else {
     60         if (SVGTests::parseMappedAttribute(attr))
     61             return;
     62         if (SVGLangSpace::parseMappedAttribute(attr))
     63             return;
     64         if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
     65             return;
     66         SVGStyledTransformableElement::parseMappedAttribute(attr);
     67     }
     68 }
     69 
     70 void SVGClipPathElement::svgAttributeChanged(const QualifiedName& attrName)
     71 {
     72     SVGStyledTransformableElement::svgAttributeChanged(attrName);
     73 
     74     RenderObject* object = renderer();
     75     if (!object)
     76         return;
     77 
     78     if (attrName == SVGNames::clipPathUnitsAttr
     79         || SVGTests::isKnownAttribute(attrName)
     80         || SVGLangSpace::isKnownAttribute(attrName)
     81         || SVGExternalResourcesRequired::isKnownAttribute(attrName)
     82         || SVGStyledTransformableElement::isKnownAttribute(attrName))
     83         object->setNeedsLayout(true);
     84 }
     85 
     86 void SVGClipPathElement::synchronizeProperty(const QualifiedName& attrName)
     87 {
     88     SVGStyledTransformableElement::synchronizeProperty(attrName);
     89 
     90     if (attrName == anyQName()) {
     91         synchronizeClipPathUnits();
     92         synchronizeExternalResourcesRequired();
     93         SVGTests::synchronizeProperties(this, attrName);
     94         return;
     95     }
     96 
     97     if (attrName == SVGNames::clipPathUnitsAttr)
     98         synchronizeClipPathUnits();
     99     else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
    100         synchronizeExternalResourcesRequired();
    101     else if (SVGTests::isKnownAttribute(attrName))
    102         SVGTests::synchronizeProperties(this, attrName);
    103 }
    104 
    105 AttributeToPropertyTypeMap& SVGClipPathElement::attributeToPropertyTypeMap()
    106 {
    107     DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
    108     return s_attributeToPropertyTypeMap;
    109 }
    110 
    111 void SVGClipPathElement::fillAttributeToPropertyTypeMap()
    112 {
    113     AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();
    114 
    115     SVGStyledTransformableElement::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
    116     attributeToPropertyTypeMap.set(SVGNames::clipPathUnitsAttr, AnimatedEnumeration);
    117 }
    118 
    119 void SVGClipPathElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
    120 {
    121     SVGStyledTransformableElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
    122 
    123     if (changedByParser)
    124         return;
    125 
    126     if (RenderObject* object = renderer())
    127         object->setNeedsLayout(true);
    128 }
    129 
    130 RenderObject* SVGClipPathElement::createRenderer(RenderArena* arena, RenderStyle*)
    131 {
    132     return new (arena) RenderSVGResourceClipper(this);
    133 }
    134 
    135 }
    136 
    137 #endif // ENABLE(SVG)
    138