khtml/svg/SVGMarkerElement.cpp

   1 /*
   2     Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
   3                   2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
   4
   5     This file is part of the KDE project
   6
   7     This library is free software; you can redistribute it and/or
   8     modify it under the terms of the GNU Library General Public
   9     License as published by the Free Software Foundation; either
  10     version 2 of the License, or (at your option) any later version.
  11
  12     This library is distributed in the hope that it will be useful,
  13     but WITHOUT ANY WARRANTY; without even the implied warranty of
  14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15     Library General Public License for more details.
  16
  17     You should have received a copy of the GNU Library General Public License
  18     along with this library; see the file COPYING.LIB.  If not, write to
  19     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  20     Boston, MA 02110-1301, USA.
  21 */
  22
  23 #include "config.h"
  24
  25 #if ENABLE(SVG)
  26 #include "SVGMarkerElement.h"
  27
  28 #include "PlatformString.h"
  29 #include "RenderSVGViewportContainer.h"
  30 #include "SVGAngle.h"
  31 #include "SVGFitToViewBox.h"
  32 #include "SVGLength.h"
  33 #include "SVGNames.h"
  34 #include "SVGPreserveAspectRatio.h"
  35 #include "SVGSVGElement.h"
  36
  37 namespace WebCore {
  38
  39 SVGMarkerElement::SVGMarkerElement(const QualifiedName& tagName, Document* doc)
  40     : SVGStyledElement(tagName, doc)
  41     , SVGLangSpace()
  42     , SVGExternalResourcesRequired()
  43     , SVGFitToViewBox()
  44     , m_refX(this, LengthModeWidth)
  45     , m_refY(this, LengthModeHeight)
  46     , m_markerWidth(this, LengthModeWidth)
  47     , m_markerHeight(this, LengthModeHeight)
  48     , m_markerUnits(SVG_MARKERUNITS_STROKEWIDTH)
  49     , m_orientType(0)
  50     , m_orientAngle(new SVGAngle())
  51 {
  52     // Spec: If the attribute is not specified, the effect is as if a value of "3" were specified.
  53     setMarkerWidthBaseValue(SVGLength(this, LengthModeWidth, "3"));
  54     setMarkerHeightBaseValue(SVGLength(this, LengthModeHeight, "3"));
  55 }
  56
  57 SVGMarkerElement::~SVGMarkerElement()
  58 {
  59 }
  60
  61 ANIMATED_PROPERTY_DEFINITIONS(SVGMarkerElement, SVGLength, Length, length, RefX, refX, SVGNames::refXAttr, m_refX)
  62 ANIMATED_PROPERTY_DEFINITIONS(SVGMarkerElement, SVGLength, Length, length, RefY, refY, SVGNames::refYAttr, m_refY)
  63 ANIMATED_PROPERTY_DEFINITIONS(SVGMarkerElement, int, Enumeration, enumeration, MarkerUnits, markerUnits, SVGNames::markerUnitsAttr, m_markerUnits)
  64 ANIMATED_PROPERTY_DEFINITIONS(SVGMarkerElement, SVGLength, Length, length, MarkerWidth, markerWidth, SVGNames::markerWidthAttr, m_markerWidth)
  65 ANIMATED_PROPERTY_DEFINITIONS(SVGMarkerElement, SVGLength, Length, length, MarkerHeight, markerHeight, SVGNames::markerHeightAttr, m_markerHeight)
  66 ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGMarkerElement, int, Enumeration, enumeration, OrientType, orientType, SVGNames::orientAttr, "orientType", m_orientType)
  67 ANIMATED_PROPERTY_DEFINITIONS_WITH_CUSTOM_IDENTIFIER(SVGMarkerElement, SVGAngle*, Angle, angle, OrientAngle, orientAngle, SVGNames::orientAttr, "orientAngle", m_orientAngle.get())
  68
  69 void SVGMarkerElement::parseMappedAttribute(MappedAttribute* attr)
  70 {
  71     if (attr->name() == SVGNames::markerUnitsAttr) {
  72         if (attr->value() == "userSpaceOnUse")
  73             setMarkerUnitsBaseValue(SVG_MARKERUNITS_USERSPACEONUSE);
  74     } else if (attr->name() == SVGNames::refXAttr)
  75         setRefXBaseValue(SVGLength(this, LengthModeWidth, attr->value()));
  76     else if (attr->name() == SVGNames::refYAttr)
  77         setRefYBaseValue(SVGLength(this, LengthModeHeight, attr->value()));
  78     else if (attr->name() == SVGNames::markerWidthAttr)
  79         setMarkerWidthBaseValue(SVGLength(this, LengthModeWidth, attr->value()));
  80     else if (attr->name() == SVGNames::markerHeightAttr)
  81         setMarkerHeightBaseValue(SVGLength(this, LengthModeHeight, attr->value()));
  82     else if (attr->name() == SVGNames::orientAttr) {
  83         if (attr->value() == "auto")
  84             setOrientToAuto();
  85         else {
  86             SVGAngle* angle = new SVGAngle();
  87             angle->setValueAsString(attr->value());
  88             setOrientToAngle(angle);
  89         }
  90     } else {
  91         if (SVGLangSpace::parseMappedAttribute(attr))
  92             return;
  93         if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
  94             return;
  95         if (SVGFitToViewBox::parseMappedAttribute(attr))
  96             return;
  97
  98         SVGStyledElement::parseMappedAttribute(attr);
  99     }
 100 }
 101
 102 void SVGMarkerElement::svgAttributeChanged(const QualifiedName& attrName)
 103 {
 104     SVGStyledElement::svgAttributeChanged(attrName);
 105
 106     if (!m_marker)
 107         return;
 108
 109     if (attrName == SVGNames::markerUnitsAttr || attrName == SVGNames::refXAttr ||
 110         attrName == SVGNames::refYAttr || attrName == SVGNames::markerWidthAttr ||
 111         attrName == SVGNames::markerHeightAttr || attrName == SVGNames::orientAttr ||
 112         SVGLangSpace::isKnownAttribute(attrName) ||
 113         SVGExternalResourcesRequired::isKnownAttribute(attrName) ||
 114         SVGFitToViewBox::isKnownAttribute(attrName) ||
 115         SVGStyledElement::isKnownAttribute(attrName)) {
 116         if (renderer())
 117             renderer()->setNeedsLayout(true);
 118
 119         m_marker->invalidate();
 120     }
 121 }
 122
 123 void SVGMarkerElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
 124 {
 125     SVGStyledElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
 126
 127     if (renderer())
 128         renderer()->setNeedsLayout(true);
 129
 130     if (m_marker)
 131         m_marker->invalidate();
 132 }
 133
 134 void SVGMarkerElement::setOrientToAuto()
 135 {
 136     setOrientTypeBaseValue(SVG_MARKER_ORIENT_AUTO);
 137 }
 138
 139 void SVGMarkerElement::setOrientToAngle(SVGAngle* angle)
 140 {
 141     setOrientTypeBaseValue(SVG_MARKER_ORIENT_ANGLE);
 142     setOrientAngleBaseValue(angle);
 143 }
 144
 145 SVGResource* SVGMarkerElement::canvasResource()
 146 {
 147     if (!m_marker)
 148         m_marker = SVGResourceMarker::create();
 149
 150     m_marker->setMarker(static_cast<RenderSVGViewportContainer*>(renderer()));
 151
 152     // Spec: If the attribute is not specified, the effect is as if a
 153     // value of "0" were specified.
 154     if (!m_orientType)
 155         setOrientToAngle(SVGSVGElement::createSVGAngle());
 156
 157     if (orientType() == SVG_MARKER_ORIENT_ANGLE)
 158         m_marker->setAngle(orientAngle()->value());
 159     else
 160         m_marker->setAutoAngle();
 161
 162     m_marker->setRef(refX().value(), refY().value());
 163     m_marker->setUseStrokeWidth(markerUnits() == SVG_MARKERUNITS_STROKEWIDTH);
 164
 165     return m_marker.get();
 166 }
 167
 168 RenderObject* SVGMarkerElement::createRenderer(RenderArena* arena, RenderStyle* style)
 169 {
 170     RenderSVGViewportContainer* markerContainer = new (arena) RenderSVGViewportContainer(this);
 171     markerContainer->setDrawsContents(false); // Marker contents will be explicitly drawn.
 172     return markerContainer;
 173 }
 174
 175 }
 176
 177 #endif // ENABLE(SVG)