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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) 2008 Rob Buis <buis@kde.org> | |
5 * Copyright (C) Research In Motion Limited 2011. All rights reserved. | |
6 * | |
7 * This library is free software; you can redistribute it and/or | |
8 * modify it under the terms of the GNU Library General Public | |
9 * License as published by the Free Software Foundation; either | |
10 * version 2 of the License, or (at your option) any later version. | |
11 * | |
12 * This library is distributed in the hope that it will be useful, | |
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 * Library General Public License for more details. | |
16 * | |
17 * You should have received a copy of the GNU Library General Public License | |
18 * along with this library; see the file COPYING.LIB. If not, write to | |
19 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
20 * Boston, MA 02110-1301, USA. | |
21 */ | |
22 | |
23 #ifndef SVGGlyph_h | |
24 #define SVGGlyph_h | |
25 | |
26 #if ENABLE(SVG_FONTS) | |
27 #include "core/platform/graphics/Path.h" | |
28 #include "platform/fonts/Glyph.h" | |
29 | |
30 #include <limits> | |
31 #include "wtf/text/WTFString.h" | |
32 #include "wtf/Vector.h" | |
33 | |
34 namespace WebCore { | |
35 | |
36 // Describe a glyph from a SVG Font. | |
37 struct SVGGlyph { | |
38 enum Orientation { | |
39 Vertical, | |
40 Horizontal, | |
41 Both | |
42 }; | |
43 | |
44 // SVG Font depends on exactly this order. | |
45 enum ArabicForm { | |
46 None = 0, | |
47 Isolated, | |
48 Terminal, | |
49 Initial, | |
50 Medial | |
51 }; | |
52 | |
53 SVGGlyph() | |
54 : isPartOfLigature(false) | |
55 , orientation(Both) | |
56 , arabicForm(None) | |
57 , priority(0) | |
58 , tableEntry(0) | |
59 , unicodeStringLength(0) | |
60 , horizontalAdvanceX(0) | |
61 , verticalOriginX(0) | |
62 , verticalOriginY(0) | |
63 , verticalAdvanceY(0) | |
64 { | |
65 } | |
66 | |
67 // Used to mark our float properties as "to be inherited from SVGFontData" | |
68 static float inheritedValue() | |
69 { | |
70 static float s_inheritedValue = std::numeric_limits<float>::infinity(); | |
71 return s_inheritedValue; | |
72 } | |
73 | |
74 bool operator==(const SVGGlyph& other) const | |
75 { | |
76 return isPartOfLigature == other.isPartOfLigature | |
77 && orientation == other.orientation | |
78 && arabicForm == other.arabicForm | |
79 && tableEntry == other.tableEntry | |
80 && unicodeStringLength == other.unicodeStringLength | |
81 && glyphName == other.glyphName | |
82 && horizontalAdvanceX == other.horizontalAdvanceX | |
83 && verticalOriginX == other.verticalOriginX | |
84 && verticalOriginY == other.verticalOriginY | |
85 && verticalAdvanceY == other.verticalAdvanceY | |
86 && languages == other.languages; | |
87 } | |
88 | |
89 bool isPartOfLigature : 1; | |
90 | |
91 unsigned orientation : 2; // Orientation | |
92 unsigned arabicForm : 3; // ArabicForm | |
93 int priority; | |
94 Glyph tableEntry; | |
95 size_t unicodeStringLength; | |
96 String glyphName; | |
97 | |
98 float horizontalAdvanceX; | |
99 float verticalOriginX; | |
100 float verticalOriginY; | |
101 float verticalAdvanceY; | |
102 | |
103 Path pathData; | |
104 Vector<String> languages; | |
105 }; | |
106 | |
107 Vector<SVGGlyph::ArabicForm> charactersWithArabicForm(const String& input, bool
rtl); | |
108 bool isCompatibleGlyph(const SVGGlyph&, bool isVerticalText, const String& langu
age, const Vector<SVGGlyph::ArabicForm>&, unsigned startPosition, unsigned endPo
sition); | |
109 | |
110 } // namespace WebCore | |
111 | |
112 #endif // ENABLE(SVG_FONTS) | |
113 #endif | |
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