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 #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 */ 123