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      1 /*
      2     Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3                   2004, 2005, 2006, 2007 Rob Buis <buis (at) kde.org>
      4 
      5     This library is free software; you can redistribute it and/or
      6     modify it under the terms of the GNU Library General Public
      7     License as published by the Free Software Foundation; either
      8     version 2 of the License, or (at your option) any later version.
      9 
     10     This library is distributed in the hope that it will be useful,
     11     but WITHOUT ANY WARRANTY; without even the implied warranty of
     12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13     Library General Public License for more details.
     14 
     15     You should have received a copy of the GNU Library General Public License
     16     along with this library; see the file COPYING.LIB.  If not, write to
     17     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18     Boston, MA 02110-1301, USA.
     19 */
     20 
     21 #include "config.h"
     22 
     23 #if ENABLE(SVG)
     24 #include "SVGCircleElement.h"
     25 
     26 #include "FloatPoint.h"
     27 #include "MappedAttribute.h"
     28 #include "RenderPath.h"
     29 #include "SVGLength.h"
     30 #include "SVGNames.h"
     31 
     32 namespace WebCore {
     33 
     34 SVGCircleElement::SVGCircleElement(const QualifiedName& tagName, Document* doc)
     35     : SVGStyledTransformableElement(tagName, doc)
     36     , SVGTests()
     37     , SVGLangSpace()
     38     , SVGExternalResourcesRequired()
     39     , m_cx(LengthModeWidth)
     40     , m_cy(LengthModeHeight)
     41     , m_r(LengthModeOther)
     42 {
     43 }
     44 
     45 SVGCircleElement::~SVGCircleElement()
     46 {
     47 }
     48 
     49 void SVGCircleElement::parseMappedAttribute(MappedAttribute* attr)
     50 {
     51     if (attr->name() == SVGNames::cxAttr)
     52         setCxBaseValue(SVGLength(LengthModeWidth, attr->value()));
     53     else if (attr->name() == SVGNames::cyAttr)
     54         setCyBaseValue(SVGLength(LengthModeHeight, attr->value()));
     55     else if (attr->name() == SVGNames::rAttr) {
     56         setRBaseValue(SVGLength(LengthModeOther, attr->value()));
     57         if (rBaseValue().value(this) < 0.0)
     58             document()->accessSVGExtensions()->reportError("A negative value for circle <r> is not allowed");
     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 SVGCircleElement::svgAttributeChanged(const QualifiedName& attrName)
     71 {
     72     SVGStyledTransformableElement::svgAttributeChanged(attrName);
     73 
     74     if (!renderer())
     75         return;
     76 
     77     if (attrName == SVGNames::cxAttr || attrName == SVGNames::cyAttr ||
     78         attrName == SVGNames::rAttr ||
     79         SVGTests::isKnownAttribute(attrName) ||
     80         SVGLangSpace::isKnownAttribute(attrName) ||
     81         SVGExternalResourcesRequired::isKnownAttribute(attrName) ||
     82         SVGStyledTransformableElement::isKnownAttribute(attrName))
     83         renderer()->setNeedsLayout(true);
     84 }
     85 
     86 void SVGCircleElement::synchronizeProperty(const QualifiedName& attrName)
     87 {
     88     SVGStyledTransformableElement::synchronizeProperty(attrName);
     89 
     90     if (attrName == anyQName()) {
     91         synchronizeCx();
     92         synchronizeCy();
     93         synchronizeR();
     94         synchronizeExternalResourcesRequired();
     95         return;
     96     }
     97 
     98     if (attrName == SVGNames::cxAttr)
     99         synchronizeCx();
    100     else if (attrName == SVGNames::cyAttr)
    101         synchronizeCy();
    102     else if (attrName == SVGNames::rAttr)
    103         synchronizeR();
    104     else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
    105         synchronizeExternalResourcesRequired();
    106 }
    107 
    108 Path SVGCircleElement::toPathData() const
    109 {
    110     return Path::createCircle(FloatPoint(cx().value(this), cy().value(this)), r().value(this));
    111 }
    112 
    113 bool SVGCircleElement::hasRelativeValues() const
    114 {
    115     return (cx().isRelative() || cy().isRelative() || r().isRelative());
    116 }
    117 
    118 }
    119 
    120 #endif // ENABLE(SVG)
    121