1 /***************************************************************************/ 2 /* */ 3 /* ttcmap.h */ 4 /* */ 5 /* TrueType character mapping table (cmap) support (specification). */ 6 /* */ 7 /* Copyright 2002-2018 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 #ifndef FT_CONFIG_OPTION_PIC 60 61 #define FT_DEFINE_TT_CMAP( class_, \ 62 size_, \ 63 init_, \ 64 done_, \ 65 char_index_, \ 66 char_next_, \ 67 char_var_index_, \ 68 char_var_default_, \ 69 variant_list_, \ 70 charvariant_list_, \ 71 variantchar_list_, \ 72 format_, \ 73 validate_, \ 74 get_cmap_info_ ) \ 75 FT_CALLBACK_TABLE_DEF \ 76 const TT_CMap_ClassRec class_ = \ 77 { \ 78 { size_, \ 79 init_, \ 80 done_, \ 81 char_index_, \ 82 char_next_, \ 83 char_var_index_, \ 84 char_var_default_, \ 85 variant_list_, \ 86 charvariant_list_, \ 87 variantchar_list_ \ 88 }, \ 89 \ 90 format_, \ 91 validate_, \ 92 get_cmap_info_ \ 93 }; 94 95 #else /* FT_CONFIG_OPTION_PIC */ 96 97 #define FT_DEFINE_TT_CMAP( class_, \ 98 size_, \ 99 init_, \ 100 done_, \ 101 char_index_, \ 102 char_next_, \ 103 char_var_index_, \ 104 char_var_default_, \ 105 variant_list_, \ 106 charvariant_list_, \ 107 variantchar_list_, \ 108 format_, \ 109 validate_, \ 110 get_cmap_info_ ) \ 111 void \ 112 FT_Init_Class_ ## class_( TT_CMap_ClassRec* clazz ) \ 113 { \ 114 clazz->clazz.size = size_; \ 115 clazz->clazz.init = init_; \ 116 clazz->clazz.done = done_; \ 117 clazz->clazz.char_index = char_index_; \ 118 clazz->clazz.char_next = char_next_; \ 119 clazz->clazz.char_var_index = char_var_index_; \ 120 clazz->clazz.char_var_default = char_var_default_; \ 121 clazz->clazz.variant_list = variant_list_; \ 122 clazz->clazz.charvariant_list = charvariant_list_; \ 123 clazz->clazz.variantchar_list = variantchar_list_; \ 124 clazz->format = format_; \ 125 clazz->validate = validate_; \ 126 clazz->get_cmap_info = get_cmap_info_; \ 127 } 128 129 #endif /* FT_CONFIG_OPTION_PIC */ 130 131 132 typedef struct TT_ValidatorRec_ 133 { 134 FT_ValidatorRec validator; 135 FT_UInt num_glyphs; 136 137 } TT_ValidatorRec, *TT_Validator; 138 139 140 #define TT_VALIDATOR( x ) ( (TT_Validator)( x ) ) 141 #define TT_VALID_GLYPH_COUNT( x ) TT_VALIDATOR( x )->num_glyphs 142 143 144 FT_CALLBACK_TABLE const TT_CMap_ClassRec tt_cmap_unicode_class_rec; 145 146 FT_LOCAL( FT_Error ) 147 tt_face_build_cmaps( TT_Face face ); 148 149 /* used in tt-cmaps service */ 150 FT_LOCAL( FT_Error ) 151 tt_get_cmap_info( FT_CharMap charmap, 152 TT_CMapInfo *cmap_info ); 153 154 155 FT_END_HEADER 156 157 #endif /* TTCMAP_H_ */ 158 159 160 /* END */ 161
