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