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
32namespace WebCore {
33
34using namespace SVGNames;
35
36inline SVGVKernElement::SVGVKernElement(const QualifiedName& tagName, Document* document)
37    : SVGElement(tagName, document)
38{
39}
40
41PassRefPtr<SVGVKernElement> SVGVKernElement::create(const QualifiedName& tagName, Document* document)
42{
43    return adoptRef(new SVGVKernElement(tagName, document));
44}
45
46void 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
56void 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
66void 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