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      1 /***************************************************************************/
      2 /*                                                                         */
      3 /*  ttcmap.h                                                               */
      4 /*                                                                         */
      5 /*    TrueType character mapping table (cmap) support (specification).     */
      6 /*                                                                         */
      7 /*  Copyright 2002-2005, 2009, 2012 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_LOCAL( FT_Error )
    145   tt_face_build_cmaps( TT_Face  face );
    146 
    147   /* used in tt-cmaps service */
    148   FT_LOCAL( FT_Error )
    149   tt_get_cmap_info( FT_CharMap    charmap,
    150                     TT_CMapInfo  *cmap_info );
    151 
    152 
    153 FT_END_HEADER
    154 
    155 #endif /* __TTCMAP_H__ */
    156 
    157 
    158 /* END */
    159