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      1 /*
      2  * Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 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 "SVGEllipseElement.h"
     25 
     26 #include "Attribute.h"
     27 #include "FloatPoint.h"
     28 #include "RenderSVGPath.h"
     29 #include "RenderSVGResource.h"
     30 #include "SVGLength.h"
     31 #include "SVGNames.h"
     32 
     33 namespace WebCore {
     34 
     35 // Animated property definitions
     36 DEFINE_ANIMATED_LENGTH(SVGEllipseElement, SVGNames::cxAttr, Cx, cx)
     37 DEFINE_ANIMATED_LENGTH(SVGEllipseElement, SVGNames::cyAttr, Cy, cy)
     38 DEFINE_ANIMATED_LENGTH(SVGEllipseElement, SVGNames::rxAttr, Rx, rx)
     39 DEFINE_ANIMATED_LENGTH(SVGEllipseElement, SVGNames::ryAttr, Ry, ry)
     40 DEFINE_ANIMATED_BOOLEAN(SVGEllipseElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
     41 
     42 inline SVGEllipseElement::SVGEllipseElement(const QualifiedName& tagName, Document* document)
     43     : SVGStyledTransformableElement(tagName, document)
     44     , m_cx(LengthModeWidth)
     45     , m_cy(LengthModeHeight)
     46     , m_rx(LengthModeWidth)
     47     , m_ry(LengthModeHeight)
     48 {
     49 }
     50 
     51 PassRefPtr<SVGEllipseElement> SVGEllipseElement::create(const QualifiedName& tagName, Document* document)
     52 {
     53     return adoptRef(new SVGEllipseElement(tagName, document));
     54 }
     55 
     56 void SVGEllipseElement::parseMappedAttribute(Attribute* attr)
     57 {
     58     if (attr->name() == SVGNames::cxAttr)
     59         setCxBaseValue(SVGLength(LengthModeWidth, attr->value()));
     60     else if (attr->name() == SVGNames::cyAttr)
     61         setCyBaseValue(SVGLength(LengthModeHeight, attr->value()));
     62     else if (attr->name() == SVGNames::rxAttr) {
     63         setRxBaseValue(SVGLength(LengthModeWidth, attr->value()));
     64         if (rxBaseValue().value(this) < 0.0)
     65             document()->accessSVGExtensions()->reportError("A negative value for ellipse <rx> is not allowed");
     66     } else if (attr->name() == SVGNames::ryAttr) {
     67         setRyBaseValue(SVGLength(LengthModeHeight, attr->value()));
     68         if (ryBaseValue().value(this) < 0.0)
     69             document()->accessSVGExtensions()->reportError("A negative value for ellipse <ry> is not allowed");
     70     } else {
     71         if (SVGTests::parseMappedAttribute(attr))
     72             return;
     73         if (SVGLangSpace::parseMappedAttribute(attr))
     74             return;
     75         if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
     76             return;
     77         SVGStyledTransformableElement::parseMappedAttribute(attr);
     78     }
     79 }
     80 
     81 void SVGEllipseElement::svgAttributeChanged(const QualifiedName& attrName)
     82 {
     83     SVGStyledTransformableElement::svgAttributeChanged(attrName);
     84 
     85     bool isLengthAttribute = attrName == SVGNames::cxAttr
     86                           || attrName == SVGNames::cyAttr
     87                           || attrName == SVGNames::rxAttr
     88                           || attrName == SVGNames::ryAttr;
     89 
     90     if (isLengthAttribute)
     91         updateRelativeLengthsInformation();
     92 
     93     if (SVGTests::handleAttributeChange(this, attrName))
     94         return;
     95 
     96     RenderSVGPath* renderer = static_cast<RenderSVGPath*>(this->renderer());
     97     if (!renderer)
     98         return;
     99 
    100     if (isLengthAttribute) {
    101         renderer->setNeedsPathUpdate();
    102         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
    103         return;
    104     }
    105 
    106     if (SVGLangSpace::isKnownAttribute(attrName)
    107         || SVGExternalResourcesRequired::isKnownAttribute(attrName))
    108         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
    109 }
    110 
    111 void SVGEllipseElement::synchronizeProperty(const QualifiedName& attrName)
    112 {
    113     SVGStyledTransformableElement::synchronizeProperty(attrName);
    114 
    115     if (attrName == anyQName()) {
    116         synchronizeCx();
    117         synchronizeCy();
    118         synchronizeRx();
    119         synchronizeRy();
    120         synchronizeExternalResourcesRequired();
    121         SVGTests::synchronizeProperties(this, attrName);
    122         return;
    123     }
    124 
    125     if (attrName == SVGNames::cxAttr)
    126         synchronizeCx();
    127     else if (attrName == SVGNames::cyAttr)
    128         synchronizeCy();
    129     else if (attrName == SVGNames::rxAttr)
    130         synchronizeRx();
    131     else if (attrName == SVGNames::ryAttr)
    132         synchronizeRy();
    133     else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
    134         synchronizeExternalResourcesRequired();
    135     else if (SVGTests::isKnownAttribute(attrName))
    136         SVGTests::synchronizeProperties(this, attrName);
    137 }
    138 
    139 AttributeToPropertyTypeMap& SVGEllipseElement::attributeToPropertyTypeMap()
    140 {
    141     DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
    142     return s_attributeToPropertyTypeMap;
    143 }
    144 
    145 void SVGEllipseElement::fillAttributeToPropertyTypeMap()
    146 {
    147     AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();
    148 
    149     SVGStyledTransformableElement::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
    150     attributeToPropertyTypeMap.set(SVGNames::cxAttr, AnimatedLength);
    151     attributeToPropertyTypeMap.set(SVGNames::cyAttr, AnimatedLength);
    152     attributeToPropertyTypeMap.set(SVGNames::rxAttr, AnimatedLength);
    153     attributeToPropertyTypeMap.set(SVGNames::ryAttr, AnimatedLength);
    154 }
    155 
    156 void SVGEllipseElement::toPathData(Path& path) const
    157 {
    158     ASSERT(path.isEmpty());
    159 
    160     float radiusX = rx().value(this);
    161     if (radiusX <= 0)
    162         return;
    163 
    164     float radiusY = ry().value(this);
    165     if (radiusY <= 0)
    166         return;
    167 
    168     path.addEllipse(FloatRect(cx().value(this) - radiusX, cy().value(this) - radiusY, radiusX * 2, radiusY * 2));
    169 }
    170 
    171 bool SVGEllipseElement::selfHasRelativeLengths() const
    172 {
    173     return cx().isRelative()
    174         || cy().isRelative()
    175         || rx().isRelative()
    176         || ry().isRelative();
    177 }
    178 
    179 }
    180 
    181 #endif // ENABLE(SVG)
    182