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      1 /*
      2  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis (at) kde.org>
      4  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
      5  *
      6  * This library is free software; you can redistribute it and/or
      7  * modify it under the terms of the GNU Library General Public
      8  * License as published by the Free Software Foundation; either
      9  * version 2 of the License, or (at your option) any later version.
     10  *
     11  * This library is distributed in the hope that it will be useful,
     12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     14  * Library General Public License for more details.
     15  *
     16  * You should have received a copy of the GNU Library General Public License
     17  * along with this library; see the file COPYING.LIB.  If not, write to
     18  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     19  * Boston, MA 02110-1301, USA.
     20  */
     21 
     22 #include "config.h"
     23 
     24 #if ENABLE(SVG)
     25 #include "SVGMarkerElement.h"
     26 
     27 #include "Attribute.h"
     28 #include "RenderSVGResourceMarker.h"
     29 #include "SVGFitToViewBox.h"
     30 #include "SVGNames.h"
     31 #include "SVGSVGElement.h"
     32 
     33 namespace WebCore {
     34 
     35 // Animated property definitions
     36 DEFINE_ANIMATED_LENGTH(SVGMarkerElement, SVGNames::refXAttr, RefX, refX)
     37 DEFINE_ANIMATED_LENGTH(SVGMarkerElement, SVGNames::refYAttr, RefY, refY)
     38 DEFINE_ANIMATED_LENGTH(SVGMarkerElement, SVGNames::markerWidthAttr, MarkerWidth, markerWidth)
     39 DEFINE_ANIMATED_LENGTH(SVGMarkerElement, SVGNames::markerHeightAttr, MarkerHeight, markerHeight)
     40 DEFINE_ANIMATED_ENUMERATION(SVGMarkerElement, SVGNames::markerUnitsAttr, MarkerUnits, markerUnits)
     41 DEFINE_ANIMATED_ENUMERATION_MULTIPLE_WRAPPERS(SVGMarkerElement, SVGNames::orientAttr, orientTypeIdentifier(), OrientType, orientType)
     42 DEFINE_ANIMATED_ANGLE_MULTIPLE_WRAPPERS(SVGMarkerElement, SVGNames::orientAttr, orientAngleIdentifier(), OrientAngle, orientAngle)
     43 DEFINE_ANIMATED_BOOLEAN(SVGMarkerElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
     44 DEFINE_ANIMATED_RECT(SVGMarkerElement, SVGNames::viewBoxAttr, ViewBox, viewBox)
     45 DEFINE_ANIMATED_PRESERVEASPECTRATIO(SVGMarkerElement, SVGNames::preserveAspectRatioAttr, PreserveAspectRatio, preserveAspectRatio)
     46 
     47 inline SVGMarkerElement::SVGMarkerElement(const QualifiedName& tagName, Document* document)
     48     : SVGStyledElement(tagName, document)
     49     , m_refX(LengthModeWidth)
     50     , m_refY(LengthModeHeight)
     51     , m_markerWidth(LengthModeWidth, "3")
     52     , m_markerHeight(LengthModeHeight, "3")
     53     , m_markerUnits(SVG_MARKERUNITS_STROKEWIDTH)
     54     , m_orientType(SVG_MARKER_ORIENT_ANGLE)
     55 {
     56     // Spec: If the markerWidth/markerHeight attribute is not specified, the effect is as if a value of "3" were specified.
     57 }
     58 
     59 PassRefPtr<SVGMarkerElement> SVGMarkerElement::create(const QualifiedName& tagName, Document* document)
     60 {
     61     return adoptRef(new SVGMarkerElement(tagName, document));
     62 }
     63 
     64 const AtomicString& SVGMarkerElement::orientTypeIdentifier()
     65 {
     66     DEFINE_STATIC_LOCAL(AtomicString, s_identifier, ("SVGOrientType"));
     67     return s_identifier;
     68 }
     69 
     70 const AtomicString& SVGMarkerElement::orientAngleIdentifier()
     71 {
     72     DEFINE_STATIC_LOCAL(AtomicString, s_identifier, ("SVGOrientAngle"));
     73     return s_identifier;
     74 }
     75 
     76 AffineTransform SVGMarkerElement::viewBoxToViewTransform(float viewWidth, float viewHeight) const
     77 {
     78     return SVGFitToViewBox::viewBoxToViewTransform(viewBox(), preserveAspectRatio(), viewWidth, viewHeight);
     79 }
     80 
     81 void SVGMarkerElement::parseMappedAttribute(Attribute* attr)
     82 {
     83     if (attr->name() == SVGNames::markerUnitsAttr) {
     84         if (attr->value() == "userSpaceOnUse")
     85             setMarkerUnitsBaseValue(SVG_MARKERUNITS_USERSPACEONUSE);
     86         else if (attr->value() == "strokeWidth")
     87             setMarkerUnitsBaseValue(SVG_MARKERUNITS_STROKEWIDTH);
     88     } else if (attr->name() == SVGNames::refXAttr)
     89         setRefXBaseValue(SVGLength(LengthModeWidth, attr->value()));
     90     else if (attr->name() == SVGNames::refYAttr)
     91         setRefYBaseValue(SVGLength(LengthModeHeight, attr->value()));
     92     else if (attr->name() == SVGNames::markerWidthAttr)
     93         setMarkerWidthBaseValue(SVGLength(LengthModeWidth, attr->value()));
     94     else if (attr->name() == SVGNames::markerHeightAttr)
     95         setMarkerHeightBaseValue(SVGLength(LengthModeHeight, attr->value()));
     96     else if (attr->name() == SVGNames::orientAttr) {
     97         SVGAngle angle;
     98 
     99         if (attr->value() == "auto")
    100             setOrientTypeBaseValue(SVG_MARKER_ORIENT_AUTO);
    101         else {
    102             ExceptionCode ec = 0;
    103             angle.setValueAsString(attr->value(), ec);
    104             setOrientTypeBaseValue(SVG_MARKER_ORIENT_ANGLE);
    105         }
    106 
    107         setOrientAngleBaseValue(angle);
    108     } else {
    109         if (SVGLangSpace::parseMappedAttribute(attr))
    110             return;
    111         if (SVGExternalResourcesRequired::parseMappedAttribute(attr))
    112             return;
    113         if (SVGFitToViewBox::parseMappedAttribute(document(), attr))
    114             return;
    115 
    116         SVGStyledElement::parseMappedAttribute(attr);
    117     }
    118 }
    119 
    120 void SVGMarkerElement::svgAttributeChanged(const QualifiedName& attrName)
    121 {
    122     SVGStyledElement::svgAttributeChanged(attrName);
    123 
    124     bool invalidateClients = false;
    125     if (attrName == SVGNames::refXAttr
    126         || attrName == SVGNames::refYAttr
    127         || attrName == SVGNames::markerWidthAttr
    128         || attrName == SVGNames::markerHeightAttr) {
    129         invalidateClients = true;
    130         updateRelativeLengthsInformation();
    131     }
    132 
    133     RenderObject* object = renderer();
    134     if (!object)
    135         return;
    136 
    137     if (invalidateClients
    138         || attrName == SVGNames::markerUnitsAttr
    139         || attrName == SVGNames::orientAttr
    140         || SVGLangSpace::isKnownAttribute(attrName)
    141         || SVGExternalResourcesRequired::isKnownAttribute(attrName)
    142         || SVGFitToViewBox::isKnownAttribute(attrName)
    143         || SVGStyledElement::isKnownAttribute(attrName))
    144         object->setNeedsLayout(true);
    145 }
    146 
    147 void SVGMarkerElement::synchronizeProperty(const QualifiedName& attrName)
    148 {
    149     SVGStyledElement::synchronizeProperty(attrName);
    150 
    151     if (attrName == anyQName()) {
    152         synchronizeMarkerUnits();
    153         synchronizeRefX();
    154         synchronizeRefY();
    155         synchronizeMarkerWidth();
    156         synchronizeMarkerHeight();
    157         synchronizeOrientAngle();
    158         synchronizeOrientType();
    159         synchronizeExternalResourcesRequired();
    160         synchronizeViewBox();
    161         synchronizePreserveAspectRatio();
    162         return;
    163     }
    164 
    165     if (attrName == SVGNames::markerUnitsAttr)
    166         synchronizeMarkerUnits();
    167     else if (attrName == SVGNames::refXAttr)
    168         synchronizeRefX();
    169     else if (attrName == SVGNames::refYAttr)
    170         synchronizeRefY();
    171     else if (attrName == SVGNames::markerWidthAttr)
    172         synchronizeMarkerWidth();
    173     else if (attrName == SVGNames::markerHeightAttr)
    174         synchronizeMarkerHeight();
    175     else if (attrName == SVGNames::orientAttr) {
    176         synchronizeOrientAngle();
    177         synchronizeOrientType();
    178     } else if (SVGExternalResourcesRequired::isKnownAttribute(attrName))
    179         synchronizeExternalResourcesRequired();
    180     else if (SVGFitToViewBox::isKnownAttribute(attrName)) {
    181         synchronizeViewBox();
    182         synchronizePreserveAspectRatio();
    183     }
    184 }
    185 
    186 AttributeToPropertyTypeMap& SVGMarkerElement::attributeToPropertyTypeMap()
    187 {
    188     DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
    189     return s_attributeToPropertyTypeMap;
    190 }
    191 
    192 void SVGMarkerElement::fillAttributeToPropertyTypeMap()
    193 {
    194     AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();
    195 
    196     SVGStyledElement::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
    197     attributeToPropertyTypeMap.set(SVGNames::refXAttr, AnimatedLength);
    198     attributeToPropertyTypeMap.set(SVGNames::refYAttr, AnimatedLength);
    199     attributeToPropertyTypeMap.set(SVGNames::markerWidthAttr, AnimatedLength);
    200     attributeToPropertyTypeMap.set(SVGNames::markerHeightAttr, AnimatedLength);
    201     attributeToPropertyTypeMap.set(SVGNames::markerUnitsAttr, AnimatedEnumeration);
    202     attributeToPropertyTypeMap.set(SVGNames::orientAttr, AnimatedAngle);
    203     attributeToPropertyTypeMap.set(SVGNames::viewBoxAttr, AnimatedRect);
    204 }
    205 
    206 void SVGMarkerElement::childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta)
    207 {
    208     SVGStyledElement::childrenChanged(changedByParser, beforeChange, afterChange, childCountDelta);
    209 
    210     if (changedByParser)
    211         return;
    212 
    213     if (RenderObject* object = renderer())
    214         object->setNeedsLayout(true);
    215 }
    216 
    217 void SVGMarkerElement::setOrientToAuto()
    218 {
    219     setOrientTypeBaseValue(SVG_MARKER_ORIENT_AUTO);
    220     setOrientAngleBaseValue(SVGAngle());
    221 
    222     if (RenderObject* object = renderer())
    223         object->setNeedsLayout(true);
    224 }
    225 
    226 void SVGMarkerElement::setOrientToAngle(const SVGAngle& angle)
    227 {
    228     setOrientTypeBaseValue(SVG_MARKER_ORIENT_ANGLE);
    229     setOrientAngleBaseValue(angle);
    230 
    231     if (RenderObject* object = renderer())
    232         object->setNeedsLayout(true);
    233 }
    234 
    235 RenderObject* SVGMarkerElement::createRenderer(RenderArena* arena, RenderStyle*)
    236 {
    237     return new (arena) RenderSVGResourceMarker(this);
    238 }
    239 
    240 bool SVGMarkerElement::selfHasRelativeLengths() const
    241 {
    242     return refX().isRelative()
    243         || refY().isRelative()
    244         || markerWidth().isRelative()
    245         || markerHeight().isRelative();
    246 }
    247 
    248 }
    249 
    250 #endif
    251