WebCore/svg/SVGLineElement.cpp

   1 /*
   2     Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005, 2006, 2007 Rob Buis <buis@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 "SVGLineElement.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 SVGLineElement::SVGLineElement(const QualifiedName& tagName, Document* doc)
  35     : SVGStyledTransformableElement(tagName, doc)
  36     , SVGTests()
  37     , SVGLangSpace()
  38     , SVGExternalResourcesRequired()
  39     , m_x1(this, SVGNames::x1Attr, LengthModeWidth)
  40     , m_y1(this, SVGNames::y1Attr, LengthModeHeight)
  41     , m_x2(this, SVGNames::x2Attr, LengthModeWidth)
  42     , m_y2(this, SVGNames::y2Attr, LengthModeHeight)
  43     , m_externalResourcesRequired(this, SVGNames::externalResourcesRequiredAttr, false)
  44 {
  45 }
  46
  47 SVGLineElement::~SVGLineElement()
  48 {
  49 }
  50
  51 void SVGLineElement::parseMappedAttribute(MappedAttribute* attr)
  52 {
  53     if (attr->name() == SVGNames::x1Attr)
  54         setX1BaseValue(SVGLength(LengthModeWidth, attr->value()));
  55     else if (attr->name() == SVGNames::y1Attr)
  56         setY1BaseValue(SVGLength(LengthModeHeight, attr->value()));
  57     else if (attr->name() == SVGNames::x2Attr)
  58         setX2BaseValue(SVGLength(LengthModeWidth, attr->value()));
  59     else if (attr->name() == SVGNames::y2Attr)
  60         setY2BaseValue(SVGLength(LengthModeHeight, attr->value()));
  61     else {
  62         if (SVGTests::parseMappedAttribute(attr))
  63             return;
  64         if (SVGLangSpace::parseMappedAttribute(attr))
  65             return;
  66         if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
  67             return;
  68         SVGStyledTransformableElement::parseMappedAttribute(attr);
  69     }
  70 }
  71
  72 void SVGLineElement::svgAttributeChanged(const QualifiedName& attrName)
  73 {
  74     SVGStyledTransformableElement::svgAttributeChanged(attrName);
  75
  76     if (!renderer())
  77         return;
  78
  79     if (attrName == SVGNames::x1Attr || attrName == SVGNames::y1Attr ||
  80         attrName == SVGNames::x2Attr || attrName == SVGNames::y2Attr ||
  81         SVGTests::isKnownAttribute(attrName) ||
  82         SVGLangSpace::isKnownAttribute(attrName) ||
  83         SVGExternalResourcesRequired::isKnownAttribute(attrName) ||
  84         SVGStyledTransformableElement::isKnownAttribute(attrName))
  85         renderer()->setNeedsLayout(true);
  86 }
  87
  88 Path SVGLineElement::toPathData() const
  89 {
  90     return Path::createLine(FloatPoint(x1().value(this), y1().value(this)),
  91                             FloatPoint(x2().value(this), y2().value(this)));
  92 }
  93
  94 bool SVGLineElement::hasRelativeValues() const
  95 {
  96     return (x1().isRelative() || y1().isRelative() ||
  97             x2().isRelative() || y2().isRelative());
  98 }
  99
 100 }
 101
 102 #endif // ENABLE(SVG)