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      1 /*
      2  * Copyright (C) Research In Motion Limited 2010. All rights reserved.
      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_FONTS)
     23 #include "core/svg/SVGVKernElement.h"
     24 
     25 #include "core/svg/SVGParserUtilities.h"
     26 
     27 namespace blink {
     28 
     29 inline SVGVKernElement::SVGVKernElement(Document& document)
     30     : SVGElement(SVGNames::vkernTag, document)
     31 {
     32 }
     33 
     34 DEFINE_NODE_FACTORY(SVGVKernElement)
     35 
     36 Node::InsertionNotificationRequest SVGVKernElement::insertedInto(ContainerNode* rootParent)
     37 {
     38     if (rootParent->inDocument()) {
     39         ContainerNode* fontNode = parentNode();
     40         if (isSVGFontElement(fontNode))
     41             toSVGFontElement(*fontNode).invalidateGlyphCache();
     42     }
     43 
     44     return SVGElement::insertedInto(rootParent);
     45 }
     46 
     47 void SVGVKernElement::removedFrom(ContainerNode* rootParent)
     48 {
     49     ContainerNode* fontNode = parentNode();
     50     if (isSVGFontElement(fontNode))
     51         toSVGFontElement(*fontNode).invalidateGlyphCache();
     52 
     53     SVGElement::removedFrom(rootParent);
     54 }
     55 
     56 void SVGVKernElement::buildVerticalKerningPair(KerningPairVector& kerningPairs)
     57 {
     58     String u1 = fastGetAttribute(SVGNames::u1Attr);
     59     String g1 = fastGetAttribute(SVGNames::g1Attr);
     60     String u2 = fastGetAttribute(SVGNames::u2Attr);
     61     String g2 = fastGetAttribute(SVGNames::g2Attr);
     62     if ((u1.isEmpty() && g1.isEmpty()) || (u2.isEmpty() && g2.isEmpty()))
     63         return;
     64 
     65     SVGKerningPair kerningPair;
     66     if (parseGlyphName(g1, kerningPair.glyphName1)
     67         && parseGlyphName(g2, kerningPair.glyphName2)
     68         && parseKerningUnicodeString(u1, kerningPair.unicodeRange1, kerningPair.unicodeName1)
     69         && parseKerningUnicodeString(u2, kerningPair.unicodeRange2, kerningPair.unicodeName2)) {
     70         kerningPair.kerning = fastGetAttribute(SVGNames::kAttr).toFloat();
     71         kerningPairs.append(kerningPair);
     72     }
     73 }
     74 
     75 }
     76 
     77 #endif // ENABLE(SVG_FONTS)
     78