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      1 /*
      2  * Copyright (C) 2007 Eric Seidel <eric (at) webkit.org>
      3  * Copyright (C) 2007, 2008 Nikolas Zimmermann <zimmermann (at) kde.org>
      4  * Copyright (C) 2008 Eric Seidel <eric (at) webkit.org>
      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_FONTS)
     25 #include "SVGHKernElement.h"
     26 
     27 #include "SVGFontData.h"
     28 #include "SVGFontElement.h"
     29 #include "SVGFontFaceElement.h"
     30 #include "SVGNames.h"
     31 #include "SimpleFontData.h"
     32 #include "XMLNames.h"
     33 
     34 namespace WebCore {
     35 
     36 using namespace SVGNames;
     37 
     38 inline SVGHKernElement::SVGHKernElement(const QualifiedName& tagName, Document* document)
     39     : SVGElement(tagName, document)
     40 {
     41 }
     42 
     43 PassRefPtr<SVGHKernElement> SVGHKernElement::create(const QualifiedName& tagName, Document* document)
     44 {
     45     return adoptRef(new SVGHKernElement(tagName, document));
     46 }
     47 
     48 void SVGHKernElement::insertedIntoDocument()
     49 {
     50     ContainerNode* fontNode = parentNode();
     51     if (fontNode && fontNode->hasTagName(SVGNames::fontTag)) {
     52         if (SVGFontElement* element = static_cast<SVGFontElement*>(fontNode))
     53             element->invalidateGlyphCache();
     54     }
     55     SVGElement::insertedIntoDocument();
     56 }
     57 
     58 void SVGHKernElement::removedFromDocument()
     59 {
     60     ContainerNode* fontNode = parentNode();
     61     if (fontNode && fontNode->hasTagName(SVGNames::fontTag)) {
     62         if (SVGFontElement* element = static_cast<SVGFontElement*>(fontNode))
     63             element->invalidateGlyphCache();
     64     }
     65     SVGElement::removedFromDocument();
     66 }
     67 
     68 void SVGHKernElement::buildHorizontalKerningPair(KerningPairVector& kerningPairs)
     69 {
     70     String u1 = getAttribute(u1Attr);
     71     String g1 = getAttribute(g1Attr);
     72     String u2 = getAttribute(u2Attr);
     73     String g2 = getAttribute(g2Attr);
     74     if ((u1.isEmpty() && g1.isEmpty()) || (u2.isEmpty() && g2.isEmpty()))
     75         return;
     76 
     77     SVGKerningPair kerningPair;
     78     if (parseGlyphName(g1, kerningPair.glyphName1)
     79         && parseGlyphName(g2, kerningPair.glyphName2)
     80         && parseKerningUnicodeString(u1, kerningPair.unicodeRange1, kerningPair.unicodeName1)
     81         && parseKerningUnicodeString(u2, kerningPair.unicodeRange2, kerningPair.unicodeName2)) {
     82         kerningPair.kerning = getAttribute(kAttr).string().toFloat();
     83         kerningPairs.append(kerningPair);
     84     }
     85 }
     86 
     87 }
     88 
     89 #endif // ENABLE(SVG_FONTS)
     90