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      1 /*
      2     Copyright (C) 2007 Nikolas Zimmermann <zimmermann (at) kde.org>
      3 
      4     This library is free software; you can redistribute it and/or
      5     modify it under the terms of the GNU Library General Public
      6     License as published by the Free Software Foundation; either
      7     version 2 of the License, or (at your option) any later version.
      8 
      9     This library is distributed in the hope that it will be useful,
     10     but WITHOUT ANY WARRANTY; without even the implied warranty of
     11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12     Library General Public License for more details.
     13 
     14     You should have received a copy of the GNU Library General Public License
     15     along with this library; see the file COPYING.LIB.  If not, write to
     16     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17     Boston, MA 02110-1301, USA.
     18 */
     19 
     20 #include "config.h"
     21 
     22 #if ENABLE(SVG)
     23 #include "SVGTextPathElement.h"
     24 
     25 #include "AffineTransform.h"
     26 #include "FloatRect.h"
     27 #include "MappedAttribute.h"
     28 #include "RenderSVGTextPath.h"
     29 #include "SVGLengthList.h"
     30 #include "SVGPathElement.h"
     31 #include "SVGRenderStyle.h"
     32 #include "SVGTransformList.h"
     33 
     34 namespace WebCore {
     35 
     36 SVGTextPathElement::SVGTextPathElement(const QualifiedName& tagName, Document* doc)
     37     : SVGTextContentElement(tagName, doc)
     38     , SVGURIReference()
     39     , m_startOffset(LengthModeOther)
     40     , m_method(SVG_TEXTPATH_METHODTYPE_ALIGN)
     41     , m_spacing(SVG_TEXTPATH_SPACINGTYPE_EXACT)
     42 {
     43 }
     44 
     45 SVGTextPathElement::~SVGTextPathElement()
     46 {
     47 }
     48 
     49 void SVGTextPathElement::parseMappedAttribute(MappedAttribute* attr)
     50 {
     51     const String& value = attr->value();
     52 
     53     if (attr->name() == SVGNames::startOffsetAttr)
     54         setStartOffsetBaseValue(SVGLength(LengthModeOther, value));
     55     else if (attr->name() == SVGNames::methodAttr) {
     56         if (value == "align")
     57             setSpacingBaseValue(SVG_TEXTPATH_METHODTYPE_ALIGN);
     58         else if (value == "stretch")
     59             setSpacingBaseValue(SVG_TEXTPATH_METHODTYPE_STRETCH);
     60     } else if (attr->name() == SVGNames::spacingAttr) {
     61         if (value == "auto")
     62             setMethodBaseValue(SVG_TEXTPATH_SPACINGTYPE_AUTO);
     63         else if (value == "exact")
     64             setMethodBaseValue(SVG_TEXTPATH_SPACINGTYPE_EXACT);
     65     } else {
     66         if (SVGURIReference::parseMappedAttribute(attr))
     67             return;
     68         SVGTextContentElement::parseMappedAttribute(attr);
     69     }
     70 }
     71 
     72 void SVGTextPathElement::synchronizeProperty(const QualifiedName& attrName)
     73 {
     74     SVGTextContentElement::synchronizeProperty(attrName);
     75 
     76     if (attrName == anyQName()) {
     77         synchronizeStartOffset();
     78         synchronizeMethod();
     79         synchronizeSpacing();
     80         synchronizeHref();
     81         return;
     82     }
     83 
     84     if (attrName == SVGNames::startOffsetAttr)
     85         synchronizeStartOffset();
     86     else if (attrName == SVGNames::methodAttr)
     87         synchronizeMethod();
     88     else if (attrName == SVGNames::spacingAttr)
     89         synchronizeSpacing();
     90     else if (SVGURIReference::isKnownAttribute(attrName))
     91         synchronizeHref();
     92 }
     93 
     94 RenderObject* SVGTextPathElement::createRenderer(RenderArena* arena, RenderStyle*)
     95 {
     96     return new (arena) RenderSVGTextPath(this);
     97 }
     98 
     99 bool SVGTextPathElement::childShouldCreateRenderer(Node* child) const
    100 {
    101     if (child->isTextNode()
    102 #if ENABLE(SVG_FONTS)
    103         || child->hasTagName(SVGNames::altGlyphTag)
    104 #endif
    105         || child->hasTagName(SVGNames::trefTag) || child->hasTagName(SVGNames::tspanTag) || child->hasTagName(SVGNames::textPathTag))
    106         return true;
    107 
    108     return false;
    109 }
    110 
    111 void SVGTextPathElement::insertedIntoDocument()
    112 {
    113     SVGElement::insertedIntoDocument();
    114 
    115     String id = SVGURIReference::getTarget(href());
    116     Element* targetElement = ownerDocument()->getElementById(id);
    117     if (!targetElement) {
    118         document()->accessSVGExtensions()->addPendingResource(id, this);
    119         return;
    120     }
    121 }
    122 
    123 }
    124 
    125 #endif // ENABLE(SVG)
    126