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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 "SVGVKernElement.h"
     24 
     25 #include "SVGFontData.h"
     26 #include "SVGFontElement.h"
     27 #include "SVGFontFaceElement.h"
     28 #include "SVGNames.h"
     29 #include "SimpleFontData.h"
     30 #include "XMLNames.h"
     31 
     32 namespace WebCore {
     33 
     34 using namespace SVGNames;
     35 
     36 inline SVGVKernElement::SVGVKernElement(const QualifiedName& tagName, Document* document)
     37     : SVGElement(tagName, document)
     38 {
     39 }
     40 
     41 PassRefPtr<SVGVKernElement> SVGVKernElement::create(const QualifiedName& tagName, Document* document)
     42 {
     43     return adoptRef(new SVGVKernElement(tagName, document));
     44 }
     45 
     46 void SVGVKernElement::insertedIntoDocument()
     47 {
     48     ContainerNode* fontNode = parentNode();
     49     if (fontNode && fontNode->hasTagName(SVGNames::fontTag)) {
     50         if (SVGFontElement* element = static_cast<SVGFontElement*>(fontNode))
     51             element->invalidateGlyphCache();
     52     }
     53     SVGElement::insertedIntoDocument();
     54 }
     55 
     56 void SVGVKernElement::removedFromDocument()
     57 {
     58     ContainerNode* fontNode = parentNode();
     59     if (fontNode && fontNode->hasTagName(SVGNames::fontTag)) {
     60         if (SVGFontElement* element = static_cast<SVGFontElement*>(fontNode))
     61             element->invalidateGlyphCache();
     62     }
     63     SVGElement::removedFromDocument();
     64 }
     65 
     66 void SVGVKernElement::buildVerticalKerningPair(KerningPairVector& kerningPairs)
     67 {
     68     String u1 = getAttribute(u1Attr);
     69     String g1 = getAttribute(g1Attr);
     70     String u2 = getAttribute(u2Attr);
     71     String g2 = getAttribute(g2Attr);
     72     if ((u1.isEmpty() && g1.isEmpty()) || (u2.isEmpty() && g2.isEmpty()))
     73         return;
     74 
     75     SVGKerningPair kerningPair;
     76     if (parseGlyphName(g1, kerningPair.glyphName1)
     77         && parseGlyphName(g2, kerningPair.glyphName2)
     78         && parseKerningUnicodeString(u1, kerningPair.unicodeRange1, kerningPair.unicodeName1)
     79         && parseKerningUnicodeString(u2, kerningPair.unicodeRange2, kerningPair.unicodeName2)) {
     80         kerningPair.kerning = getAttribute(kAttr).string().toFloat();
     81         kerningPairs.append(kerningPair);
     82     }
     83 }
     84 
     85 }
     86 
     87 #endif // ENABLE(SVG_FONTS)
     88