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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 #include "SVGNames.h"
     28 #include "core/svg/SVGFontElement.h"
     29 
     30 namespace WebCore {
     31 
     32 inline SVGHKernElement::SVGHKernElement(const QualifiedName& tagName, Document* document)
     33     : SVGElement(tagName, document)
     34 {
     35     ASSERT(hasTagName(SVGNames::hkernTag));
     36     ScriptWrappable::init(this);
     37 }
     38 
     39 PassRefPtr<SVGHKernElement> SVGHKernElement::create(const QualifiedName& tagName, Document* document)
     40 {
     41     return adoptRef(new SVGHKernElement(tagName, document));
     42 }
     43 
     44 Node::InsertionNotificationRequest SVGHKernElement::insertedInto(ContainerNode* rootParent)
     45 {
     46     ContainerNode* fontNode = parentNode();
     47     if (fontNode && fontNode->hasTagName(SVGNames::fontTag))
     48         toSVGFontElement(fontNode)->invalidateGlyphCache();
     49 
     50     return SVGElement::insertedInto(rootParent);
     51 }
     52 
     53 void SVGHKernElement::removedFrom(ContainerNode* rootParent)
     54 {
     55     ContainerNode* fontNode = parentNode();
     56     if (fontNode && fontNode->hasTagName(SVGNames::fontTag))
     57         toSVGFontElement(fontNode)->invalidateGlyphCache();
     58 
     59     SVGElement::removedFrom(rootParent);
     60 }
     61 
     62 void SVGHKernElement::buildHorizontalKerningPair(KerningPairVector& kerningPairs)
     63 {
     64     String u1 = fastGetAttribute(SVGNames::u1Attr);
     65     String g1 = fastGetAttribute(SVGNames::g1Attr);
     66     String u2 = fastGetAttribute(SVGNames::u2Attr);
     67     String g2 = fastGetAttribute(SVGNames::g2Attr);
     68     if ((u1.isEmpty() && g1.isEmpty()) || (u2.isEmpty() && g2.isEmpty()))
     69         return;
     70 
     71     SVGKerningPair kerningPair;
     72     if (parseGlyphName(g1, kerningPair.glyphName1)
     73         && parseGlyphName(g2, kerningPair.glyphName2)
     74         && parseKerningUnicodeString(u1, kerningPair.unicodeRange1, kerningPair.unicodeName1)
     75         && parseKerningUnicodeString(u2, kerningPair.unicodeRange2, kerningPair.unicodeName2)) {
     76         kerningPair.kerning = fastGetAttribute(SVGNames::kAttr).string().toFloat();
     77         kerningPairs.append(kerningPair);
     78     }
     79 }
     80 
     81 }
     82 
     83 #endif // ENABLE(SVG_FONTS)
     84