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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 3918 | Serge | 1 | /***************************************************************************/ |
| 2 | /* */ |
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| 3 | /* cffcmap.c */ |
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| 4 | /* */ |
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| 5 | /* CFF character mapping table (cmap) support (body). */ |
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| 6 | /* */ |
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| 7 | /* Copyright 2002-2007, 2010, 2013 by */ |
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| 8 | /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
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| 9 | /* */ |
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| 10 | /* This file is part of the FreeType project, and may only be used, */ |
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| 11 | /* modified, and distributed under the terms of the FreeType project */ |
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| 12 | /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
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| 13 | /* this file you indicate that you have read the license and */ |
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| 14 | /* understand and accept it fully. */ |
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| 15 | /* */ |
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| 16 | /***************************************************************************/ |
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| 17 | |||
| 18 | |||
| 19 | #include |
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| 20 | #include FT_INTERNAL_DEBUG_H |
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| 21 | #include "cffcmap.h" |
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| 22 | #include "cffload.h" |
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| 23 | |||
| 24 | #include "cfferrs.h" |
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| 25 | |||
| 26 | |||
| 27 | /*************************************************************************/ |
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| 28 | /*************************************************************************/ |
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| 29 | /***** *****/ |
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| 30 | /***** CFF STANDARD (AND EXPERT) ENCODING CMAPS *****/ |
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| 31 | /***** *****/ |
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| 32 | /*************************************************************************/ |
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| 33 | /*************************************************************************/ |
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| 34 | |||
| 35 | FT_CALLBACK_DEF( FT_Error ) |
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| 36 | cff_cmap_encoding_init( CFF_CMapStd cmap ) |
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| 37 | { |
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| 38 | TT_Face face = (TT_Face)FT_CMAP_FACE( cmap ); |
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| 39 | CFF_Font cff = (CFF_Font)face->extra.data; |
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| 40 | CFF_Encoding encoding = &cff->encoding; |
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| 41 | |||
| 42 | |||
| 43 | cmap->gids = encoding->codes; |
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| 44 | |||
| 45 | return 0; |
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| 46 | } |
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| 47 | |||
| 48 | |||
| 49 | FT_CALLBACK_DEF( void ) |
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| 50 | cff_cmap_encoding_done( CFF_CMapStd cmap ) |
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| 51 | { |
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| 52 | cmap->gids = NULL; |
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| 53 | } |
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| 54 | |||
| 55 | |||
| 56 | FT_CALLBACK_DEF( FT_UInt ) |
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| 57 | cff_cmap_encoding_char_index( CFF_CMapStd cmap, |
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| 58 | FT_UInt32 char_code ) |
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| 59 | { |
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| 60 | FT_UInt result = 0; |
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| 61 | |||
| 62 | |||
| 63 | if ( char_code < 256 ) |
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| 64 | result = cmap->gids[char_code]; |
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| 65 | |||
| 66 | return result; |
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| 67 | } |
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| 68 | |||
| 69 | |||
| 70 | FT_CALLBACK_DEF( FT_UInt32 ) |
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| 71 | cff_cmap_encoding_char_next( CFF_CMapStd cmap, |
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| 72 | FT_UInt32 *pchar_code ) |
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| 73 | { |
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| 74 | FT_UInt result = 0; |
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| 75 | FT_UInt32 char_code = *pchar_code; |
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| 76 | |||
| 77 | |||
| 78 | *pchar_code = 0; |
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| 79 | |||
| 80 | if ( char_code < 255 ) |
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| 81 | { |
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| 82 | FT_UInt code = (FT_UInt)(char_code + 1); |
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| 83 | |||
| 84 | |||
| 85 | for (;;) |
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| 86 | { |
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| 87 | if ( code >= 256 ) |
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| 88 | break; |
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| 89 | |||
| 90 | result = cmap->gids[code]; |
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| 91 | if ( result != 0 ) |
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| 92 | { |
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| 93 | *pchar_code = code; |
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| 94 | break; |
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| 95 | } |
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| 96 | |||
| 97 | code++; |
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| 98 | } |
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| 99 | } |
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| 100 | return result; |
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| 101 | } |
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| 102 | |||
| 103 | |||
| 104 | FT_DEFINE_CMAP_CLASS(cff_cmap_encoding_class_rec, |
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| 105 | sizeof ( CFF_CMapStdRec ), |
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| 106 | |||
| 107 | (FT_CMap_InitFunc) cff_cmap_encoding_init, |
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| 108 | (FT_CMap_DoneFunc) cff_cmap_encoding_done, |
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| 109 | (FT_CMap_CharIndexFunc)cff_cmap_encoding_char_index, |
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| 110 | (FT_CMap_CharNextFunc) cff_cmap_encoding_char_next, |
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| 111 | |||
| 112 | NULL, NULL, NULL, NULL, NULL |
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| 113 | ) |
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| 114 | |||
| 115 | |||
| 116 | /*************************************************************************/ |
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| 117 | /*************************************************************************/ |
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| 118 | /***** *****/ |
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| 119 | /***** CFF SYNTHETIC UNICODE ENCODING CMAP *****/ |
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| 120 | /***** *****/ |
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| 121 | /*************************************************************************/ |
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| 122 | /*************************************************************************/ |
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| 123 | |||
| 124 | FT_CALLBACK_DEF( const char* ) |
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| 125 | cff_sid_to_glyph_name( TT_Face face, |
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| 126 | FT_UInt idx ) |
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| 127 | { |
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| 128 | CFF_Font cff = (CFF_Font)face->extra.data; |
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| 129 | CFF_Charset charset = &cff->charset; |
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| 130 | FT_UInt sid = charset->sids[idx]; |
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| 131 | |||
| 132 | |||
| 133 | return cff_index_get_sid_string( cff, sid ); |
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| 134 | } |
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| 135 | |||
| 136 | |||
| 137 | FT_CALLBACK_DEF( FT_Error ) |
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| 138 | cff_cmap_unicode_init( PS_Unicodes unicodes ) |
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| 139 | { |
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| 140 | TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); |
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| 141 | FT_Memory memory = FT_FACE_MEMORY( face ); |
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| 142 | CFF_Font cff = (CFF_Font)face->extra.data; |
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| 143 | CFF_Charset charset = &cff->charset; |
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| 144 | FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; |
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| 145 | |||
| 146 | |||
| 147 | /* can't build Unicode map for CID-keyed font */ |
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| 148 | /* because we don't know glyph names. */ |
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| 149 | if ( !charset->sids ) |
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| 150 | return FT_THROW( No_Unicode_Glyph_Name ); |
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| 151 | |||
| 152 | return psnames->unicodes_init( memory, |
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| 153 | unicodes, |
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| 154 | cff->num_glyphs, |
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| 155 | (PS_GetGlyphNameFunc)&cff_sid_to_glyph_name, |
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| 156 | (PS_FreeGlyphNameFunc)NULL, |
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| 157 | (FT_Pointer)face ); |
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| 158 | } |
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| 159 | |||
| 160 | |||
| 161 | FT_CALLBACK_DEF( void ) |
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| 162 | cff_cmap_unicode_done( PS_Unicodes unicodes ) |
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| 163 | { |
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| 164 | FT_Face face = FT_CMAP_FACE( unicodes ); |
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| 165 | FT_Memory memory = FT_FACE_MEMORY( face ); |
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| 166 | |||
| 167 | |||
| 168 | FT_FREE( unicodes->maps ); |
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| 169 | unicodes->num_maps = 0; |
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| 170 | } |
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| 171 | |||
| 172 | |||
| 173 | FT_CALLBACK_DEF( FT_UInt ) |
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| 174 | cff_cmap_unicode_char_index( PS_Unicodes unicodes, |
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| 175 | FT_UInt32 char_code ) |
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| 176 | { |
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| 177 | TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); |
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| 178 | CFF_Font cff = (CFF_Font)face->extra.data; |
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| 179 | FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; |
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| 180 | |||
| 181 | |||
| 182 | return psnames->unicodes_char_index( unicodes, char_code ); |
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| 183 | } |
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| 184 | |||
| 185 | |||
| 186 | FT_CALLBACK_DEF( FT_UInt32 ) |
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| 187 | cff_cmap_unicode_char_next( PS_Unicodes unicodes, |
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| 188 | FT_UInt32 *pchar_code ) |
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| 189 | { |
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| 190 | TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); |
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| 191 | CFF_Font cff = (CFF_Font)face->extra.data; |
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| 192 | FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; |
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| 193 | |||
| 194 | |||
| 195 | return psnames->unicodes_char_next( unicodes, pchar_code ); |
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| 196 | } |
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| 197 | |||
| 198 | |||
| 199 | FT_DEFINE_CMAP_CLASS(cff_cmap_unicode_class_rec, |
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| 200 | sizeof ( PS_UnicodesRec ), |
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| 201 | |||
| 202 | (FT_CMap_InitFunc) cff_cmap_unicode_init, |
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| 203 | (FT_CMap_DoneFunc) cff_cmap_unicode_done, |
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| 204 | (FT_CMap_CharIndexFunc)cff_cmap_unicode_char_index, |
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| 205 | (FT_CMap_CharNextFunc) cff_cmap_unicode_char_next, |
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| 206 | |||
| 207 | NULL, NULL, NULL, NULL, NULL |
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| 208 | ) |
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| 209 | |||
| 210 | /* END */ |