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| 1 /***************************************************************************/ | |
| 2 /* */ | |
| 3 /* cffcmap.c */ | |
| 4 /* */ | |
| 5 /* CFF character mapping table (cmap) support (body). */ | |
| 6 /* */ | |
| 7 /* Copyright 2002-2007, 2010, 2013 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 #include "../../include/ft2build.h" | |
| 20 #include "../../include/freetype/internal/ftdebug.h" | |
| 21 #include "cffcmap.h" | |
| 22 #include "cffload.h" | |
| 23 | |
| 24 #include "cfferrs.h" | |
| 25 | |
| 26 | |
| 27 /*************************************************************************/ | |
| 28 /*************************************************************************/ | |
| 29 /***** *****/ | |
| 30 /***** CFF STANDARD (AND EXPERT) ENCODING CMAPS *****/ | |
| 31 /***** *****/ | |
| 32 /*************************************************************************/ | |
| 33 /*************************************************************************/ | |
| 34 | |
| 35 FT_CALLBACK_DEF( FT_Error ) | |
| 36 cff_cmap_encoding_init( CFF_CMapStd cmap ) | |
| 37 { | |
| 38 TT_Face face = (TT_Face)FT_CMAP_FACE( cmap ); | |
| 39 CFF_Font cff = (CFF_Font)face->extra.data; | |
| 40 CFF_Encoding encoding = &cff->encoding; | |
| 41 | |
| 42 | |
| 43 cmap->gids = encoding->codes; | |
| 44 | |
| 45 return 0; | |
| 46 } | |
| 47 | |
| 48 | |
| 49 FT_CALLBACK_DEF( void ) | |
| 50 cff_cmap_encoding_done( CFF_CMapStd cmap ) | |
| 51 { | |
| 52 cmap->gids = NULL; | |
| 53 } | |
| 54 | |
| 55 | |
| 56 FT_CALLBACK_DEF( FT_UInt ) | |
| 57 cff_cmap_encoding_char_index( CFF_CMapStd cmap, | |
| 58 FT_UInt32 char_code ) | |
| 59 { | |
| 60 FT_UInt result = 0; | |
| 61 | |
| 62 | |
| 63 if ( char_code < 256 ) | |
| 64 result = cmap->gids[char_code]; | |
| 65 | |
| 66 return result; | |
| 67 } | |
| 68 | |
| 69 | |
| 70 FT_CALLBACK_DEF( FT_UInt32 ) | |
| 71 cff_cmap_encoding_char_next( CFF_CMapStd cmap, | |
| 72 FT_UInt32 *pchar_code ) | |
| 73 { | |
| 74 FT_UInt result = 0; | |
| 75 FT_UInt32 char_code = *pchar_code; | |
| 76 | |
| 77 | |
| 78 *pchar_code = 0; | |
| 79 | |
| 80 if ( char_code < 255 ) | |
| 81 { | |
| 82 FT_UInt code = (FT_UInt)(char_code + 1); | |
| 83 | |
| 84 | |
| 85 for (;;) | |
| 86 { | |
| 87 if ( code >= 256 ) | |
| 88 break; | |
| 89 | |
| 90 result = cmap->gids[code]; | |
| 91 if ( result != 0 ) | |
| 92 { | |
| 93 *pchar_code = code; | |
| 94 break; | |
| 95 } | |
| 96 | |
| 97 code++; | |
| 98 } | |
| 99 } | |
| 100 return result; | |
| 101 } | |
| 102 | |
| 103 | |
| 104 FT_DEFINE_CMAP_CLASS(cff_cmap_encoding_class_rec, | |
| 105 sizeof ( CFF_CMapStdRec ), | |
| 106 | |
| 107 (FT_CMap_InitFunc) cff_cmap_encoding_init, | |
| 108 (FT_CMap_DoneFunc) cff_cmap_encoding_done, | |
| 109 (FT_CMap_CharIndexFunc)cff_cmap_encoding_char_index, | |
| 110 (FT_CMap_CharNextFunc) cff_cmap_encoding_char_next, | |
| 111 | |
| 112 NULL, NULL, NULL, NULL, NULL | |
| 113 ) | |
| 114 | |
| 115 | |
| 116 /*************************************************************************/ | |
| 117 /*************************************************************************/ | |
| 118 /***** *****/ | |
| 119 /***** CFF SYNTHETIC UNICODE ENCODING CMAP *****/ | |
| 120 /***** *****/ | |
| 121 /*************************************************************************/ | |
| 122 /*************************************************************************/ | |
| 123 | |
| 124 FT_CALLBACK_DEF( const char* ) | |
| 125 cff_sid_to_glyph_name( TT_Face face, | |
| 126 FT_UInt idx ) | |
| 127 { | |
| 128 CFF_Font cff = (CFF_Font)face->extra.data; | |
| 129 CFF_Charset charset = &cff->charset; | |
| 130 FT_UInt sid = charset->sids[idx]; | |
| 131 | |
| 132 | |
| 133 return cff_index_get_sid_string( cff, sid ); | |
| 134 } | |
| 135 | |
| 136 | |
| 137 FT_CALLBACK_DEF( FT_Error ) | |
| 138 cff_cmap_unicode_init( PS_Unicodes unicodes ) | |
| 139 { | |
| 140 TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); | |
| 141 FT_Memory memory = FT_FACE_MEMORY( face ); | |
| 142 CFF_Font cff = (CFF_Font)face->extra.data; | |
| 143 CFF_Charset charset = &cff->charset; | |
| 144 FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; | |
| 145 | |
| 146 | |
| 147 /* can't build Unicode map for CID-keyed font */ | |
| 148 /* because we don't know glyph names. */ | |
| 149 if ( !charset->sids ) | |
| 150 return FT_THROW( No_Unicode_Glyph_Name ); | |
| 151 | |
| 152 return psnames->unicodes_init( memory, | |
| 153 unicodes, | |
| 154 cff->num_glyphs, | |
| 155 (PS_GetGlyphNameFunc)&cff_sid_to_glyph_name, | |
| 156 (PS_FreeGlyphNameFunc)NULL, | |
| 157 (FT_Pointer)face ); | |
| 158 } | |
| 159 | |
| 160 | |
| 161 FT_CALLBACK_DEF( void ) | |
| 162 cff_cmap_unicode_done( PS_Unicodes unicodes ) | |
| 163 { | |
| 164 FT_Face face = FT_CMAP_FACE( unicodes ); | |
| 165 FT_Memory memory = FT_FACE_MEMORY( face ); | |
| 166 | |
| 167 | |
| 168 FT_FREE( unicodes->maps ); | |
| 169 unicodes->num_maps = 0; | |
| 170 } | |
| 171 | |
| 172 | |
| 173 FT_CALLBACK_DEF( FT_UInt ) | |
| 174 cff_cmap_unicode_char_index( PS_Unicodes unicodes, | |
| 175 FT_UInt32 char_code ) | |
| 176 { | |
| 177 TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); | |
| 178 CFF_Font cff = (CFF_Font)face->extra.data; | |
| 179 FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; | |
| 180 | |
| 181 | |
| 182 return psnames->unicodes_char_index( unicodes, char_code ); | |
| 183 } | |
| 184 | |
| 185 | |
| 186 FT_CALLBACK_DEF( FT_UInt32 ) | |
| 187 cff_cmap_unicode_char_next( PS_Unicodes unicodes, | |
| 188 FT_UInt32 *pchar_code ) | |
| 189 { | |
| 190 TT_Face face = (TT_Face)FT_CMAP_FACE( unicodes ); | |
| 191 CFF_Font cff = (CFF_Font)face->extra.data; | |
| 192 FT_Service_PsCMaps psnames = (FT_Service_PsCMaps)cff->psnames; | |
| 193 | |
| 194 | |
| 195 return psnames->unicodes_char_next( unicodes, pchar_code ); | |
| 196 } | |
| 197 | |
| 198 | |
| 199 FT_DEFINE_CMAP_CLASS(cff_cmap_unicode_class_rec, | |
| 200 sizeof ( PS_UnicodesRec ), | |
| 201 | |
| 202 (FT_CMap_InitFunc) cff_cmap_unicode_init, | |
| 203 (FT_CMap_DoneFunc) cff_cmap_unicode_done, | |
| 204 (FT_CMap_CharIndexFunc)cff_cmap_unicode_char_index, | |
| 205 (FT_CMap_CharNextFunc) cff_cmap_unicode_char_next, | |
| 206 | |
| 207 NULL, NULL, NULL, NULL, NULL | |
| 208 ) | |
| 209 | |
| 210 /* END */ | |
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Chromium Code Reviews
Issue 815103002:
Update freetype to 2.5.4. (Closed)
Base URL: https://pdfium.googlesource.com/pdfium.git@master