File indexing completed on 2024-04-28 15:24:28

 /*
     Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
                   2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.org>
 
     This file is part of the KDE project
 
     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.
 
     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.
 
     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */
 
 #include "wtf/Platform.h"
 
 #if ENABLE(SVG)
 #include "SVGClipPathElement.h"
 
 #include "css/cssstyleselector.h"
 #include "Document.h"
 #include "SVGNames.h"
 #include "SVGTransformList.h"
 #include "SVGUnitTypes.h"
 
 namespace WebCore
 {
 
 SVGClipPathElement::SVGClipPathElement(const QualifiedName &tagName, Document *doc)
     : SVGStyledTransformableElement(tagName, doc)
     , SVGTests()
     , SVGLangSpace()
     , SVGExternalResourcesRequired()
     , m_clipPathUnits(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE)
 {
 }
 
 SVGClipPathElement::~SVGClipPathElement()
 {
 }
 
 ANIMATED_PROPERTY_DEFINITIONS(SVGClipPathElement, int, Enumeration, enumeration, ClipPathUnits, clipPathUnits, SVGNames::clipPathUnitsAttr, m_clipPathUnits)
 
 void SVGClipPathElement::parseMappedAttribute(MappedAttribute *attr)
 {
     if (attr->name() == SVGNames::clipPathUnitsAttr) {
         if (attr->value() == "userSpaceOnUse") {
             setClipPathUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_USERSPACEONUSE);
         } else if (attr->value() == "objectBoundingBox") {
             setClipPathUnitsBaseValue(SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX);
         }
     } else {
         if (SVGTests::parseMappedAttribute(attr)) {
             return;
         }
         if (SVGLangSpace::parseMappedAttribute(attr)) {
             return;
         }
         if (SVGExternalResourcesRequired::parseMappedAttribute(attr)) {
             return;
         }
         SVGStyledTransformableElement::parseMappedAttribute(attr);
     }
 }
 
 void SVGClipPathElement::svgAttributeChanged(const QualifiedName &attrName)
 {
     SVGStyledTransformableElement::svgAttributeChanged(attrName);
 
     if (!m_clipper) {
         return;
     }
 
     if (attrName == SVGNames::clipPathUnitsAttr ||
             SVGTests::isKnownAttribute(attrName) ||
             SVGLangSpace::isKnownAttribute(attrName) ||
             SVGExternalResourcesRequired::isKnownAttribute(attrName) ||
             SVGStyledTransformableElement::isKnownAttribute(attrName)) {
         m_clipper->invalidate();
     }
 }
 
 void SVGClipPathElement::childrenChanged(bool changedByParser, Node *beforeChange, Node *afterChange, int childCountDelta)
 {
     SVGStyledTransformableElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
 
     if (!m_clipper) {
         return;
     }
 
     m_clipper->invalidate();
 }
 
 SVGResource *SVGClipPathElement::canvasResource()
 {
     if (!m_clipper) {
         m_clipper = SVGResourceClipper::create();
     } else {
         m_clipper->resetClipData();
     }
 
     bool bbox = clipPathUnits() == SVGUnitTypes::SVG_UNIT_TYPE_OBJECTBOUNDINGBOX;
 
     //RenderStyle* clipPathStyle = styleForRenderer(parent()->renderer()); // FIXME: Manual style resolution is a hack
     for (Node *n = firstChild(); n; n = n->nextSibling()) {
         if (n->isSVGElement() && static_cast<SVGElement *>(n)->isStyledTransformable()) {
             SVGStyledTransformableElement *styled = static_cast<SVGStyledTransformableElement *>(n);
             RenderStyle *pathStyle = document()->styleSelector()->styleForElement(styled/*khtml, clipPathStyle*/);
             if (pathStyle->display() != NONE) {
                 Path pathData = styled->toClipPath();
                 // FIXME: How do we know the element has done a layout?
                 pathData.transform(styled->animatedLocalTransform());
                 if (!pathData.isEmpty()) {
                     m_clipper->addClipData(pathData, pathStyle->svgStyle()->clipRule(), bbox);
                 }
             }
             //khtml pathStyle->deref(document()->renderArena());
         }
     }
     if (m_clipper->clipData().isEmpty()) {
         Path pathData;
         pathData.addRect(FloatRect());
         m_clipper->addClipData(pathData, RULE_EVENODD, bbox);
     }
     //khtml clipPathStyle->deref(document()->renderArena());
     return m_clipper.get();
 }
 
 }
 
 #endif // ENABLE(SVG)