WebCore/svg/SVGTextPathElement.cpp

   1 /*
   2     Copyright (C) 2007 Nikolas Zimmermann <zimmermann@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 "FloatRect.h"
  26 #include "MappedAttribute.h"
  27 #include "RenderSVGTextPath.h"
  28 #include "SVGLengthList.h"
  29 #include "SVGPathElement.h"
  30 #include "SVGRenderStyle.h"
  31 #include "SVGTransformList.h"
  32 #include "TransformationMatrix.h"
  33
  34 namespace WebCore {
  35
  36 SVGTextPathElement::SVGTextPathElement(const QualifiedName& tagName, Document* doc)
  37     : SVGTextContentElement(tagName, doc)
  38     , SVGURIReference()
  39     , m_startOffset(this, SVGNames::startOffsetAttr, LengthModeOther)
  40     , m_method(this, SVGNames::methodAttr, SVG_TEXTPATH_METHODTYPE_ALIGN)
  41     , m_spacing(this, SVGNames::spacingAttr, SVG_TEXTPATH_SPACINGTYPE_EXACT)
  42     , m_href(this, XLinkNames::hrefAttr)
  43 {
  44 }
  45
  46 SVGTextPathElement::~SVGTextPathElement()
  47 {
  48 }
  49
  50 void SVGTextPathElement::parseMappedAttribute(MappedAttribute* attr)
  51 {
  52     const String& value = attr->value();
  53
  54     if (attr->name() == SVGNames::startOffsetAttr)
  55         setStartOffsetBaseValue(SVGLength(LengthModeOther, value));
  56     else if (attr->name() == SVGNames::methodAttr) {
  57         if (value == "align")
  58             setSpacingBaseValue(SVG_TEXTPATH_METHODTYPE_ALIGN);
  59         else if (value == "stretch")
  60             setSpacingBaseValue(SVG_TEXTPATH_METHODTYPE_STRETCH);
  61     } else if (attr->name() == SVGNames::spacingAttr) {
  62         if (value == "auto")
  63             setMethodBaseValue(SVG_TEXTPATH_SPACINGTYPE_AUTO);
  64         else if (value == "exact")
  65             setMethodBaseValue(SVG_TEXTPATH_SPACINGTYPE_EXACT);
  66     } else {
  67         if (SVGURIReference::parseMappedAttribute(attr))
  68             return;
  69         SVGTextContentElement::parseMappedAttribute(attr);
  70     }
  71 }
  72
  73 RenderObject* SVGTextPathElement::createRenderer(RenderArena* arena, RenderStyle*)
  74 {
  75     return new (arena) RenderSVGTextPath(this);
  76 }
  77
  78 bool SVGTextPathElement::childShouldCreateRenderer(Node* child) const
  79 {
  80     if (child->isTextNode()
  81 #if ENABLE(SVG_FONTS)
  82         || child->hasTagName(SVGNames::altGlyphTag)
  83 #endif
  84         || child->hasTagName(SVGNames::trefTag) || child->hasTagName(SVGNames::tspanTag) || child->hasTagName(SVGNames::textPathTag))
  85         return true;
  86
  87     return false;
  88 }
  89
  90 void SVGTextPathElement::insertedIntoDocument()
  91 {
  92     SVGElement::insertedIntoDocument();
  93
  94     String id = SVGURIReference::getTarget(href());
  95     Element* targetElement = ownerDocument()->getElementById(id);
  96     if (!targetElement) {
  97         document()->accessSVGExtensions()->addPendingResource(id, this);
  98         return;
  99     }
 100 }
 101
 102 }
 103
 104 #endif // ENABLE(SVG)
 105
 106 // vim:ts=4:noet