/*

   Copyright (C) Research In Motion Limited 2010. All rights reserved.

   This library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Library General Public

   License as published by the Free Software Foundation; either

   version 2 of the License, or (at your option) any later version.

   This library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License

   along with this library; see the file COPYING.LIB.  If not, write to

   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,

   Boston, MA 02110-1301, USA.

*/

#include "config.h"

#if ENABLE(SVG_FONTS)

#include "SVGVKernElement.h"

#include "SVGFontData.h"

#include "SVGFontElement.h"

#include "SVGFontFaceElement.h"

#include "SVGNames.h"

#include "SimpleFontData.h"

#include "XMLNames.h"

namespace WebCore {

using namespace SVGNames;

SVGVKernElement::SVGVKernElement(const QualifiedName& tagName, Document* doc)

    : SVGElement(tagName, doc)

{

}

SVGVKernElement::~SVGVKernElement()

{

}

void SVGVKernElement::insertedIntoDocument()

{

    Node* fontNode = parentNode();

    if (fontNode && fontNode->hasTagName(SVGNames::fontTag)) {

        if (SVGFontElement* element = static_cast<SVGFontElement*>(fontNode))

            element->invalidateGlyphCache();

    }

}

void SVGVKernElement::removedFromDocument()

{

    Node* fontNode = parentNode();

    if (fontNode && fontNode->hasTagName(SVGNames::fontTag)) {

        if (SVGFontElement* element = static_cast<SVGFontElement*>(fontNode))

            element->invalidateGlyphCache();

    }

}

void SVGVKernElement::buildVerticalKerningPair(KerningPairVector& kerningPairs)

{

    String u1 = getAttribute(u1Attr);

    String g1 = getAttribute(g1Attr);

    String u2 = getAttribute(u2Attr);

    String g2 = getAttribute(g2Attr);

    if ((u1.isEmpty() && g1.isEmpty()) || (u2.isEmpty() && g2.isEmpty()))

        return;

    SVGKerningPair kerningPair;

    if (parseGlyphName(g1, kerningPair.glyphName1)

        && parseGlyphName(g2, kerningPair.glyphName2)

        && parseKerningUnicodeString(u1, kerningPair.unicodeRange1, kerningPair.unicodeName1)

        && parseKerningUnicodeString(u2, kerningPair.unicodeRange2, kerningPair.unicodeName2)) {

        kerningPair.kerning = getAttribute(kAttr).string().toFloat();

        kerningPairs.append(kerningPair);

    }

}

}

#endif // ENABLE(SVG_FONTS)