Home | History | Annotate | Download | only in svg 
      1 /*
      2  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3  * Copyright (C) 2010 Rob Buis <rwlbuis (at) gmail.com>
      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 "SVGTextPathElement.h"
     25 
     26 #include "Attribute.h"
     27 #include "RenderSVGResource.h"
     28 #include "RenderSVGTextPath.h"
     29 #include "SVGNames.h"
     30 
     31 namespace WebCore {
     32 
     33 // Animated property definitions
     34 DEFINE_ANIMATED_LENGTH(SVGTextPathElement, SVGNames::startOffsetAttr, StartOffset, startOffset)
     35 DEFINE_ANIMATED_ENUMERATION(SVGTextPathElement, SVGNames::methodAttr, Method, method)
     36 DEFINE_ANIMATED_ENUMERATION(SVGTextPathElement, SVGNames::spacingAttr, Spacing, spacing)
     37 DEFINE_ANIMATED_STRING(SVGTextPathElement, XLinkNames::hrefAttr, Href, href)
     38 
     39 inline SVGTextPathElement::SVGTextPathElement(const QualifiedName& tagName, Document* document)
     40     : SVGTextContentElement(tagName, document)
     41     , m_startOffset(LengthModeOther)
     42     , m_method(SVG_TEXTPATH_METHODTYPE_ALIGN)
     43     , m_spacing(SVG_TEXTPATH_SPACINGTYPE_EXACT)
     44 {
     45 }
     46 
     47 PassRefPtr<SVGTextPathElement> SVGTextPathElement::create(const QualifiedName& tagName, Document* document)
     48 {
     49     return adoptRef(new SVGTextPathElement(tagName, document));
     50 }
     51 
     52 void SVGTextPathElement::parseMappedAttribute(Attribute* attr)
     53 {
     54     const String& value = attr->value();
     55 
     56     if (attr->name() == SVGNames::startOffsetAttr)
     57         setStartOffsetBaseValue(SVGLength(LengthModeOther, value));
     58     else if (attr->name() == SVGNames::methodAttr) {
     59         if (value == "align")
     60             setSpacingBaseValue(SVG_TEXTPATH_METHODTYPE_ALIGN);
     61         else if (value == "stretch")
     62             setSpacingBaseValue(SVG_TEXTPATH_METHODTYPE_STRETCH);
     63     } else if (attr->name() == SVGNames::spacingAttr) {
     64         if (value == "auto")
     65             setMethodBaseValue(SVG_TEXTPATH_SPACINGTYPE_AUTO);
     66         else if (value == "exact")
     67             setMethodBaseValue(SVG_TEXTPATH_SPACINGTYPE_EXACT);
     68     } else {
     69         if (SVGURIReference::parseMappedAttribute(attr))
     70             return;
     71         SVGTextContentElement::parseMappedAttribute(attr);
     72     }
     73 }
     74 
     75 void SVGTextPathElement::svgAttributeChanged(const QualifiedName& attrName)
     76 {
     77     SVGTextContentElement::svgAttributeChanged(attrName);
     78 
     79     if (attrName == SVGNames::startOffsetAttr)
     80         updateRelativeLengthsInformation();
     81 
     82     if (!renderer())
     83         return;
     84 
     85     if (attrName == SVGNames::startOffsetAttr
     86         || SVGURIReference::isKnownAttribute(attrName))
     87         RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer());
     88 }
     89 
     90 void SVGTextPathElement::synchronizeProperty(const QualifiedName& attrName)
     91 {
     92     SVGTextContentElement::synchronizeProperty(attrName);
     93 
     94     if (attrName == anyQName()) {
     95         synchronizeStartOffset();
     96         synchronizeMethod();
     97         synchronizeSpacing();
     98         synchronizeHref();
     99         return;
    100     }
    101 
    102     if (attrName == SVGNames::startOffsetAttr)
    103         synchronizeStartOffset();
    104     else if (attrName == SVGNames::methodAttr)
    105         synchronizeMethod();
    106     else if (attrName == SVGNames::spacingAttr)
    107         synchronizeSpacing();
    108     else if (SVGURIReference::isKnownAttribute(attrName))
    109         synchronizeHref();
    110 }
    111 
    112 AttributeToPropertyTypeMap& SVGTextPathElement::attributeToPropertyTypeMap()
    113 {
    114     DEFINE_STATIC_LOCAL(AttributeToPropertyTypeMap, s_attributeToPropertyTypeMap, ());
    115     return s_attributeToPropertyTypeMap;
    116 }
    117 
    118 void SVGTextPathElement::fillAttributeToPropertyTypeMap()
    119 {
    120     AttributeToPropertyTypeMap& attributeToPropertyTypeMap = this->attributeToPropertyTypeMap();
    121 
    122     SVGTextContentElement::fillPassedAttributeToPropertyTypeMap(attributeToPropertyTypeMap);
    123     attributeToPropertyTypeMap.set(SVGNames::startOffsetAttr, AnimatedLength);
    124     attributeToPropertyTypeMap.set(SVGNames::methodAttr, AnimatedEnumeration);
    125     attributeToPropertyTypeMap.set(SVGNames::spacingAttr, AnimatedEnumeration);
    126     attributeToPropertyTypeMap.set(XLinkNames::hrefAttr, AnimatedString);
    127 }
    128 
    129 RenderObject* SVGTextPathElement::createRenderer(RenderArena* arena, RenderStyle*)
    130 {
    131     return new (arena) RenderSVGTextPath(this);
    132 }
    133 
    134 bool SVGTextPathElement::childShouldCreateRenderer(Node* child) const
    135 {
    136     if (child->isTextNode()
    137         || child->hasTagName(SVGNames::aTag)
    138         || child->hasTagName(SVGNames::trefTag)
    139         || child->hasTagName(SVGNames::tspanTag))
    140         return true;
    141 
    142     return false;
    143 }
    144 
    145 bool SVGTextPathElement::rendererIsNeeded(RenderStyle* style)
    146 {
    147     if (parentNode()
    148         && (parentNode()->hasTagName(SVGNames::aTag)
    149             || parentNode()->hasTagName(SVGNames::textTag)))
    150         return StyledElement::rendererIsNeeded(style);
    151 
    152     return false;
    153 }
    154 
    155 void SVGTextPathElement::insertedIntoDocument()
    156 {
    157     SVGTextContentElement::insertedIntoDocument();
    158 
    159     String id = SVGURIReference::getTarget(href());
    160     Element* targetElement = ownerDocument()->getElementById(id);
    161     if (!targetElement) {
    162         document()->accessSVGExtensions()->addPendingResource(id, this);
    163         return;
    164     }
    165 }
    166 
    167 bool SVGTextPathElement::selfHasRelativeLengths() const
    168 {
    169     return startOffset().isRelative()
    170         || SVGTextContentElement::selfHasRelativeLengths();
    171 }
    172 
    173 }
    174 
    175 #endif // ENABLE(SVG)
    176