1 /****************************************************************************
2 *
3 * ttcmap.h
4 *
5 * TrueType character mapping table (cmap) support (specification).
6 *
7 * Copyright (C) 2002-2019 by
8 * David Turner, Robert Wilhelm, and Werner Lemberg.
9 *
10 * This file is part of the FreeType project, and may only be used,
11 * modified, and distributed under the terms of the FreeType project
12 * license, LICENSE.TXT. By continuing to use, modify, or distribute
13 * this file you indicate that you have read the license and
14 * understand and accept it fully.
15 *
16 */
17
18
19 #ifndef TTCMAP_H_
20 #define TTCMAP_H_
21
22
23 #include <ft2build.h>
24 #include FT_INTERNAL_TRUETYPE_TYPES_H
25 #include FT_INTERNAL_VALIDATE_H
26 #include FT_SERVICE_TT_CMAP_H
27
28 FT_BEGIN_HEADER
29
30
31 #define TT_CMAP_FLAG_UNSORTED 1
32 #define TT_CMAP_FLAG_OVERLAPPING 2
33
34 typedef struct TT_CMapRec_
35 {
36 FT_CMapRec cmap;
37 FT_Byte* data; /* pointer to in-memory cmap table */
38 FT_Int flags; /* for format 4 only */
39
40 } TT_CMapRec, *TT_CMap;
41
42 typedef const struct TT_CMap_ClassRec_* TT_CMap_Class;
43
44
45 typedef FT_Error
46 (*TT_CMap_ValidateFunc)( FT_Byte* data,
47 FT_Validator valid );
48
49 typedef struct TT_CMap_ClassRec_
50 {
51 FT_CMap_ClassRec clazz;
52 FT_UInt format;
53 TT_CMap_ValidateFunc validate;
54 TT_CMap_Info_GetFunc get_cmap_info;
55
56 } TT_CMap_ClassRec;
57
58
59 #define FT_DEFINE_TT_CMAP( class_, \
60 size_, \
61 init_, \
62 done_, \
63 char_index_, \
64 char_next_, \
65 char_var_index_, \
66 char_var_default_, \
67 variant_list_, \
68 charvariant_list_, \
69 variantchar_list_, \
70 format_, \
71 validate_, \
72 get_cmap_info_ ) \
73 FT_CALLBACK_TABLE_DEF \
74 const TT_CMap_ClassRec class_ = \
75 { \
76 { size_, \
77 init_, \
78 done_, \
79 char_index_, \
80 char_next_, \
81 char_var_index_, \
82 char_var_default_, \
83 variant_list_, \
84 charvariant_list_, \
85 variantchar_list_ \
86 }, \
87 \
88 format_, \
89 validate_, \
90 get_cmap_info_ \
91 };
92
93
94 typedef struct TT_ValidatorRec_
95 {
96 FT_ValidatorRec validator;
97 FT_UInt num_glyphs;
98
99 } TT_ValidatorRec, *TT_Validator;
100
101
102 #define TT_VALIDATOR( x ) ( (TT_Validator)( x ) )
103 #define TT_VALID_GLYPH_COUNT( x ) TT_VALIDATOR( x )->num_glyphs
104
105
106 FT_CALLBACK_TABLE const TT_CMap_ClassRec tt_cmap_unicode_class_rec;
107
108 FT_LOCAL( FT_Error )
109 tt_face_build_cmaps( TT_Face face );
110
111 /* used in tt-cmaps service */
112 FT_LOCAL( FT_Error )
113 tt_get_cmap_info( FT_CharMap charmap,
114 TT_CMapInfo *cmap_info );
115
116
117 FT_END_HEADER
118
119 #endif /* TTCMAP_H_ */
120
121
122 /* END */