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1 /***************************************************************************/
2 /*                                                                         */
3 /*  ttcmap.h                                                               */
4 /*                                                                         */
5 /*    TrueType character mapping table (cmap) support (specification).     */
6 /*                                                                         */
7 /*  Copyright 2002, 2003, 2004, 2005 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 #ifndef FT_CONFIG_OPTION_PIC
59 
60 #define FT_DEFINE_TT_CMAP(class_, size_, init_, done_, char_index_,          \
61     char_next_, char_var_index_, char_var_default_, variant_list_,           \
62     charvariant_list_,variantchar_list_,                                     \
63     format_, validate_, get_cmap_info_)                                      \
64   FT_CALLBACK_TABLE_DEF                                                      \
65   const TT_CMap_ClassRec class_ =                                            \
66   {                                                                          \
67     {size_, init_, done_, char_index_,                                       \
68      char_next_, char_var_index_, char_var_default_, variant_list_,          \
69      charvariant_list_, variantchar_list_},                                  \
70     format_, validate_, get_cmap_info_                                       \
71   };
72 
73 #else /* FT_CONFIG_OPTION_PIC */
74 
75 #define FT_DEFINE_TT_CMAP(class_, size_, init_, done_, char_index_,          \
76     char_next_, char_var_index_, char_var_default_, variant_list_,           \
77     charvariant_list_,variantchar_list_,                                     \
78     format_, validate_, get_cmap_info_)                                      \
79   void                                                                       \
80   FT_Init_Class_##class_( TT_CMap_ClassRec*  clazz )                         \
81   {                                                                          \
82     clazz->clazz.size = size_;                                               \
83     clazz->clazz.init = init_;                                               \
84     clazz->clazz.done = done_;                                               \
85     clazz->clazz.char_index = char_index_;                                   \
86     clazz->clazz.char_next = char_next_;                                     \
87     clazz->clazz.char_var_index = char_var_index_;                           \
88     clazz->clazz.char_var_default = char_var_default_;                       \
89     clazz->clazz.variant_list = variant_list_;                               \
90     clazz->clazz.charvariant_list = charvariant_list_;                       \
91     clazz->clazz.variantchar_list = variantchar_list_;                       \
92     clazz->format = format_;                                                 \
93     clazz->validate = validate_;                                             \
94     clazz->get_cmap_info = get_cmap_info_;                                   \
95   }
96 
97 #endif /* FT_CONFIG_OPTION_PIC */
98 
99   typedef struct  TT_ValidatorRec_
100   {
101     FT_ValidatorRec  validator;
102     FT_UInt          num_glyphs;
103 
104   } TT_ValidatorRec, *TT_Validator;
105 
106 
107 #define TT_VALIDATOR( x )          ((TT_Validator)( x ))
108 #define TT_VALID_GLYPH_COUNT( x )  TT_VALIDATOR( x )->num_glyphs
109 
110 
111   FT_LOCAL( FT_Error )
112   tt_face_build_cmaps( TT_Face  face );
113 
114   /* used in tt-cmaps service */
115   FT_LOCAL( FT_Error )
116   tt_get_cmap_info( FT_CharMap    charmap,
117                     TT_CMapInfo  *cmap_info );
118 
119 
120 FT_END_HEADER
121 
122 #endif /* __TTCMAP_H__ */
123 
124 
125 /* END */
126