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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 "core/svg/SVGHKernElement.h"
     26 
     27 
     28 namespace blink {
     29 
     30 inline SVGHKernElement::SVGHKernElement(Document& document)
     31     : SVGElement(SVGNames::hkernTag, document)
     32 {
     33 }
     34 
     35 DEFINE_NODE_FACTORY(SVGHKernElement)
     36 
     37 Node::InsertionNotificationRequest SVGHKernElement::insertedInto(ContainerNode* rootParent)
     38 {
     39     ContainerNode* fontNode = parentNode();
     40     if (isSVGFontElement(fontNode))
     41         toSVGFontElement(*fontNode).invalidateGlyphCache();
     42 
     43     return SVGElement::insertedInto(rootParent);
     44 }
     45 
     46 void SVGHKernElement::removedFrom(ContainerNode* rootParent)
     47 {
     48     ContainerNode* fontNode = parentNode();
     49     if (isSVGFontElement(fontNode))
     50         toSVGFontElement(*fontNode).invalidateGlyphCache();
     51 
     52     SVGElement::removedFrom(rootParent);
     53 }
     54 
     55 void SVGHKernElement::buildHorizontalKerningPair(KerningPairVector& kerningPairs)
     56 {
     57     String u1 = fastGetAttribute(SVGNames::u1Attr);
     58     String g1 = fastGetAttribute(SVGNames::g1Attr);
     59     String u2 = fastGetAttribute(SVGNames::u2Attr);
     60     String g2 = fastGetAttribute(SVGNames::g2Attr);
     61     if ((u1.isEmpty() && g1.isEmpty()) || (u2.isEmpty() && g2.isEmpty()))
     62         return;
     63 
     64     SVGKerningPair kerningPair;
     65     if (parseGlyphName(g1, kerningPair.glyphName1)
     66         && parseGlyphName(g2, kerningPair.glyphName2)
     67         && parseKerningUnicodeString(u1, kerningPair.unicodeRange1, kerningPair.unicodeName1)
     68         && parseKerningUnicodeString(u2, kerningPair.unicodeRange2, kerningPair.unicodeName2)) {
     69         kerningPair.kerning = fastGetAttribute(SVGNames::kAttr).toFloat();
     70         kerningPairs.append(kerningPair);
     71     }
     72 }
     73 
     74 }
     75 
     76 #endif // ENABLE(SVG_FONTS)
     77