| 1 | /***************************************************************************/ |
| 2 | /* */ |
| 3 | /* cidriver.c */ |
| 4 | /* */ |
| 5 | /* CID driver interface (body). */ |
| 6 | /* */ |
| 7 | /* Copyright 1996-2000 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 | #ifdef FT_FLAT_COMPILE |
| 20 | |
| 21 | #include "cidriver.h" |
| 22 | #include "cidgload.h" |
| 23 | |
| 24 | #else |
| 25 | |
| 26 | #include <cid/cidriver.h> |
| 27 | #include <cid/cidgload.h> |
| 28 | |
| 29 | #endif |
| 30 | |
| 31 | |
| 32 | #include <freetype/internal/ftdebug.h> |
| 33 | #include <freetype/internal/ftstream.h> |
| 34 | #include <freetype/internal/psnames.h> |
| 35 | |
| 36 | #include <string.h> /* for strcmp() */ |
| 37 | |
| 38 | |
| 39 | /*************************************************************************/ |
| 40 | /* */ |
| 41 | /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ |
| 42 | /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ |
| 43 | /* messages during execution. */ |
| 44 | /* */ |
| 45 | #undef FT_COMPONENT |
| 46 | #define FT_COMPONENT trace_ciddriver |
| 47 | |
| 48 | |
| 49 | static |
| 50 | FT_Module_Interface CID_Get_Interface( FT_Driver driver, |
| 51 | const FT_String* interface ) |
| 52 | { |
| 53 | FT_UNUSED( driver ); |
| 54 | FT_UNUSED( interface ); |
| 55 | |
| 56 | return 0; |
| 57 | } |
| 58 | |
| 59 | |
| 60 | #if 0 /* unimplemented yet */ |
| 61 | |
| 62 | static |
| 63 | FT_Error cid_Get_Kerning( T1_Face face, |
| 64 | FT_UInt left_glyph, |
| 65 | FT_UInt right_glyph, |
| 66 | FT_Vector* kerning ) |
| 67 | { |
| 68 | CID_AFM* afm; |
| 69 | |
| 70 | |
| 71 | kerning->x = 0; |
| 72 | kerning->y = 0; |
| 73 | |
| 74 | afm = (CID_AFM*)face->afm_data; |
| 75 | if ( afm ) |
| 76 | CID_Get_Kerning( afm, left_glyph, right_glyph, kerning ); |
| 77 | |
| 78 | return T1_Err_Ok; |
| 79 | } |
| 80 | |
| 81 | |
| 82 | #endif /* 0 */ |
| 83 | |
| 84 | |
| 85 | /*************************************************************************/ |
| 86 | /* */ |
| 87 | /* <Function> */ |
| 88 | /* Cid_Get_Char_Index */ |
| 89 | /* */ |
| 90 | /* <Description> */ |
| 91 | /* Uses a charmap to return a given character code's glyph index. */ |
| 92 | /* */ |
| 93 | /* <Input> */ |
| 94 | /* charmap :: A handle to the source charmap object. */ |
| 95 | /* */ |
| 96 | /* charcode :: The character code. */ |
| 97 | /* */ |
| 98 | /* <Return> */ |
| 99 | /* Glyph index. 0 means `undefined character code'. */ |
| 100 | /* */ |
| 101 | static |
| 102 | FT_UInt CID_Get_Char_Index( FT_CharMap charmap, |
| 103 | FT_Long charcode ) |
| 104 | { |
| 105 | T1_Face face; |
| 106 | FT_UInt result = 0; |
| 107 | PSNames_Interface* psnames; |
| 108 | |
| 109 | |
| 110 | face = (T1_Face)charmap->face; |
| 111 | psnames = (PSNames_Interface*)face->psnames; |
| 112 | if ( psnames ) |
| 113 | switch ( charmap->encoding ) |
| 114 | { |
| 115 | /*******************************************************************/ |
| 116 | /* */ |
| 117 | /* Unicode encoding support */ |
| 118 | /* */ |
| 119 | case ft_encoding_unicode: |
| 120 | /* use the `PSNames' module to synthetize the Unicode charmap */ |
| 121 | result = psnames->lookup_unicode( &face->unicode_map, |
| 122 | (FT_ULong)charcode ); |
| 123 | |
| 124 | /* the function returns 0xFFFF if the Unicode charcode has */ |
| 125 | /* no corresponding glyph. */ |
| 126 | if ( result == 0xFFFF ) |
| 127 | result = 0; |
| 128 | goto Exit; |
| 129 | |
| 130 | /*******************************************************************/ |
| 131 | /* */ |
| 132 | /* Custom Type 1 encoding */ |
| 133 | /* */ |
| 134 | case ft_encoding_adobe_custom: |
| 135 | { |
| 136 | T1_Encoding* encoding = &face->type1.encoding; |
| 137 | |
| 138 | |
| 139 | if ( charcode >= encoding->code_first && |
| 140 | charcode <= encoding->code_last ) |
| 141 | result = encoding->char_index[charcode]; |
| 142 | goto Exit; |
| 143 | } |
| 144 | |
| 145 | /*******************************************************************/ |
| 146 | /* */ |
| 147 | /* Adobe Standard & Expert encoding support */ |
| 148 | /* */ |
| 149 | default: |
| 150 | if ( charcode < 256 ) |
| 151 | { |
| 152 | FT_UInt code; |
| 153 | FT_Int n; |
| 154 | const char* glyph_name; |
| 155 | |
| 156 | |
| 157 | code = psnames->adobe_std_encoding[charcode]; |
| 158 | if ( charmap->encoding == ft_encoding_adobe_expert ) |
| 159 | code = psnames->adobe_expert_encoding[charcode]; |
| 160 | |
| 161 | glyph_name = psnames->adobe_std_strings( code ); |
| 162 | if ( !glyph_name ) |
| 163 | break; |
| 164 | |
| 165 | for ( n = 0; n < face->type1.num_glyphs; n++ ) |
| 166 | { |
| 167 | const char* gname = face->type1.glyph_names[n]; |
| 168 | |
| 169 | |
| 170 | if ( gname && gname[0] == glyph_name[0] && |
| 171 | strcmp( gname, glyph_name ) == 0 ) |
| 172 | { |
| 173 | result = n; |
| 174 | break; |
| 175 | } |
| 176 | } |
| 177 | } |
| 178 | } |
| 179 | |
| 180 | Exit: |
| 181 | return result; |
| 182 | } |
| 183 | |
| 184 | |
| 185 | const FT_Driver_Class t1cid_driver_class = |
| 186 | { |
| 187 | /* first of all, the FT_Module_Class fields */ |
| 188 | { |
| 189 | ft_module_font_driver | ft_module_driver_scalable, |
| 190 | sizeof( FT_DriverRec ), |
| 191 | "t1cid", /* module name */ |
| 192 | 0x10000L, /* version 1.0 of driver */ |
| 193 | 0x20000L, /* requires FreeType 2.0 */ |
| 194 | |
| 195 | 0, |
| 196 | |
| 197 | (FT_Module_Constructor)CID_Init_Driver, |
| 198 | (FT_Module_Destructor) CID_Done_Driver, |
| 199 | (FT_Module_Requester) CID_Get_Interface |
| 200 | }, |
| 201 | |
| 202 | /* then the other font drivers fields */ |
| 203 | sizeof( CID_FaceRec ), |
| 204 | sizeof( CID_SizeRec ), |
| 205 | sizeof( CID_GlyphSlotRec ), |
| 206 | |
| 207 | (FTDriver_initFace) CID_Init_Face, |
| 208 | (FTDriver_doneFace) CID_Done_Face, |
| 209 | |
| 210 | (FTDriver_initSize) 0, |
| 211 | (FTDriver_doneSize) 0, |
| 212 | (FTDriver_initGlyphSlot)0, |
| 213 | (FTDriver_doneGlyphSlot)0, |
| 214 | |
| 215 | (FTDriver_setCharSizes) 0, |
| 216 | (FTDriver_setPixelSizes)0, |
| 217 | |
| 218 | (FTDriver_loadGlyph) CID_Load_Glyph, |
| 219 | (FTDriver_getCharIndex) CID_Get_Char_Index, |
| 220 | |
| 221 | (FTDriver_getKerning) 0, |
| 222 | (FTDriver_attachFile) 0, |
| 223 | |
| 224 | (FTDriver_getAdvances) 0 |
| 225 | }; |
| 226 | |
| 227 | |
| 228 | #ifdef FT_CONFIG_OPTION_DYNAMIC_DRIVERS |
| 229 | |
| 230 | |
| 231 | /*************************************************************************/ |
| 232 | /* */ |
| 233 | /* <Function> */ |
| 234 | /* getDriverClass */ |
| 235 | /* */ |
| 236 | /* <Description> */ |
| 237 | /* This function is used when compiling the TrueType driver as a */ |
| 238 | /* shared library (`.DLL' or `.so'). It will be used by the */ |
| 239 | /* high-level library of FreeType to retrieve the address of the */ |
| 240 | /* driver's generic interface. */ |
| 241 | /* */ |
| 242 | /* It shouldn't be implemented in a static build, as each driver must */ |
| 243 | /* have the same function as an exported entry point. */ |
| 244 | /* */ |
| 245 | /* <Return> */ |
| 246 | /* The address of the TrueType's driver generic interface. The */ |
| 247 | /* format-specific interface can then be retrieved through the method */ |
| 248 | /* interface->get_format_interface. */ |
| 249 | /* */ |
| 250 | EXPORT_FUNC( FT_Driver_Class* ) getDriverClass( void ) |
| 251 | { |
| 252 | return &t1cid_driver_class; |
| 253 | } |
| 254 | |
| 255 | |
| 256 | #endif /* CONFIG_OPTION_DYNAMIC_DRIVERS */ |
| 257 | |
| 258 | |
| 259 | /* END */ |