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1 /* | |
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. | |
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 #ifndef SVGFontElement_h | |
23 #define SVGFontElement_h | |
24 | |
25 #if ENABLE(SVG_FONTS) | |
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" | |
31 | |
32 namespace blink { | |
33 | |
34 // Describe an SVG <hkern>/<vkern> element | |
35 struct SVGKerningPair { | |
36 float kerning; | |
37 UnicodeRanges unicodeRange1; | |
38 UnicodeRanges unicodeRange2; | |
39 HashSet<String> unicodeName1; | |
40 HashSet<String> unicodeName2; | |
41 HashSet<String> glyphName1; | |
42 HashSet<String> glyphName2; | |
43 | |
44 SVGKerningPair() | |
45 : kerning(0) | |
46 { | |
47 } | |
48 }; | |
49 | |
50 typedef unsigned KerningPairKey; | |
51 typedef Vector<SVGKerningPair> KerningPairVector; | |
52 typedef HashMap<KerningPairKey, float> KerningTable; | |
53 | |
54 class SVGFontElement final : public SVGElement { | |
55 DEFINE_WRAPPERTYPEINFO(); | |
56 public: | |
57 DECLARE_NODE_FACTORY(SVGFontElement); | |
58 | |
59 void invalidateGlyphCache(); | |
60 void collectGlyphsForString(const String&, Vector<SVGGlyph>&); | |
61 void collectGlyphsForAltGlyphReference(const String&, Vector<SVGGlyph>&); | |
62 | |
63 float horizontalKerningForPairOfGlyphs(Glyph, Glyph) const; | |
64 float verticalKerningForPairOfGlyphs(Glyph, Glyph) const; | |
65 | |
66 // Used by SimpleFontData/SimpleShaper. | |
67 SVGGlyph svgGlyphForGlyph(Glyph); | |
68 Glyph missingGlyph(); | |
69 | |
70 private: | |
71 explicit SVGFontElement(Document&); | |
72 | |
73 virtual bool rendererIsNeeded(const RenderStyle&) override { return false; } | |
74 | |
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&); | |
80 | |
81 | |
82 KerningTable m_horizontalKerningTable; | |
83 KerningTable m_verticalKerningTable; | |
84 SVGGlyphMap m_glyphMap; | |
85 Glyph m_missingGlyph; | |
86 bool m_isGlyphCacheValid; | |
87 }; | |
88 | |
89 } // namespace blink | |
90 | |
91 #endif // ENABLE(SVG_FONTS) | |
92 #endif // SVGFontElement_h | |
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