2 * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
3 * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
4 * Copyright (C) Research In Motion Limited 2010. All rights reserved.
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.
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.
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.
22 #ifndef SVGFontElement_h
23 #define SVGFontElement_h
26 #include "core/SVGNames.h"
27 #include "core/svg/SVGAnimatedBoolean.h"
28 #include "core/svg/SVGElement.h"
29 #include "core/svg/SVGGlyphMap.h"
30 #include "core/svg/SVGParserUtilities.h"
34 // Describe an SVG <hkern>/<vkern> element
35 struct SVGKerningPair {
37 UnicodeRanges unicodeRange1;
38 UnicodeRanges unicodeRange2;
39 HashSet<String> unicodeName1;
40 HashSet<String> unicodeName2;
41 HashSet<String> glyphName1;
42 HashSet<String> glyphName2;
50 typedef unsigned KerningPairKey;
51 typedef Vector<SVGKerningPair> KerningPairVector;
52 typedef HashMap<KerningPairKey, float> KerningTable;
54 class SVGFontElement FINAL : public SVGElement {
55 DEFINE_WRAPPERTYPEINFO();
57 DECLARE_NODE_FACTORY(SVGFontElement);
59 void invalidateGlyphCache();
60 void collectGlyphsForString(const String&, Vector<SVGGlyph>&);
61 void collectGlyphsForAltGlyphReference(const String&, Vector<SVGGlyph>&);
63 float horizontalKerningForPairOfGlyphs(Glyph, Glyph) const;
64 float verticalKerningForPairOfGlyphs(Glyph, Glyph) const;
66 // Used by SimpleFontData/WidthIterator.
67 SVGGlyph svgGlyphForGlyph(Glyph);
71 explicit SVGFontElement(Document&);
73 virtual bool rendererIsNeeded(const RenderStyle&) OVERRIDE { return false; }
75 void ensureGlyphCache();
76 void registerLigaturesInGlyphCache(Vector<String>&);
77 Vector<SVGGlyph> buildGlyphList(const UnicodeRanges&, const HashSet<String>& unicodeNames, const HashSet<String>& glyphNames) const;
78 void addPairsToKerningTable(const SVGKerningPair&, KerningTable&);
79 void buildKerningTable(const KerningPairVector&, KerningTable&);
82 KerningTable m_horizontalKerningTable;
83 KerningTable m_verticalKerningTable;
84 SVGGlyphMap m_glyphMap;
86 bool m_isGlyphCacheValid;
91 #endif // ENABLE(SVG_FONTS)
92 #endif // SVGFontElement_h