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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 "platform/PlatformExport.h" | |
28 #include "platform/fonts/Glyph.h" | |
29 #include "platform/graphics/Path.h" | |
30 | |
31 #include <limits> | |
32 #include "wtf/text/WTFString.h" | |
33 #include "wtf/Vector.h" | |
34 | |
35 namespace blink { | |
36 | |
37 // Describe a glyph from a SVG Font. | |
38 struct SVGGlyph { | |
39 enum Orientation { | |
40 Vertical, | |
41 Horizontal, | |
42 Both | |
43 }; | |
44 | |
45 // SVG Font depends on exactly this order. | |
46 enum ArabicForm { | |
47 None = 0, | |
48 Isolated, | |
49 Terminal, | |
50 Initial, | |
51 Medial | |
52 }; | |
53 | |
54 SVGGlyph() | |
55 : isPartOfLigature(false) | |
56 , orientation(Both) | |
57 , arabicForm(None) | |
58 , priority(0) | |
59 , tableEntry(0) | |
60 , unicodeStringLength(0) | |
61 , horizontalAdvanceX(0) | |
62 , verticalOriginX(0) | |
63 , verticalOriginY(0) | |
64 , verticalAdvanceY(0) | |
65 { | |
66 } | |
67 | |
68 // Used to mark our float properties as "to be inherited from SVGFontData" | |
69 static float inheritedValue() | |
70 { | |
71 static float s_inheritedValue = std::numeric_limits<float>::infinity(); | |
72 return s_inheritedValue; | |
73 } | |
74 | |
75 bool operator==(const SVGGlyph& other) const | |
76 { | |
77 return isPartOfLigature == other.isPartOfLigature | |
78 && orientation == other.orientation | |
79 && arabicForm == other.arabicForm | |
80 && tableEntry == other.tableEntry | |
81 && unicodeStringLength == other.unicodeStringLength | |
82 && glyphName == other.glyphName | |
83 && horizontalAdvanceX == other.horizontalAdvanceX | |
84 && verticalOriginX == other.verticalOriginX | |
85 && verticalOriginY == other.verticalOriginY | |
86 && verticalAdvanceY == other.verticalAdvanceY | |
87 && languages == other.languages; | |
88 } | |
89 | |
90 bool isPartOfLigature : 1; | |
91 | |
92 unsigned orientation : 2; // Orientation | |
93 unsigned arabicForm : 3; // ArabicForm | |
94 int priority; | |
95 Glyph tableEntry; | |
96 size_t unicodeStringLength; | |
97 String glyphName; | |
98 | |
99 float horizontalAdvanceX; | |
100 float verticalOriginX; | |
101 float verticalOriginY; | |
102 float verticalAdvanceY; | |
103 | |
104 Path pathData; | |
105 Vector<String> languages; | |
106 }; | |
107 | |
108 Vector<SVGGlyph::ArabicForm> PLATFORM_EXPORT charactersWithArabicForm(const Stri
ng& input, bool rtl); | |
109 bool PLATFORM_EXPORT isCompatibleGlyph(const SVGGlyph&, bool isVerticalText, con
st String& language, const Vector<SVGGlyph::ArabicForm>&, unsigned startPosition
, unsigned endPosition); | |
110 | |
111 } // namespace blink | |
112 | |
113 #endif // ENABLE(SVG_FONTS) | |
114 #endif | |
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