cidriver.c (7489B)
1 /**************************************************************************** 2 * 3 * cidriver.c 4 * 5 * CID driver interface (body). 6 * 7 * Copyright (C) 1996-2025 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 "cidriver.h" 20 #include "cidgload.h" 21 #include <freetype/internal/ftdebug.h> 22 #include <freetype/internal/ftpsprop.h> 23 24 #include "ciderrs.h" 25 26 #include <freetype/internal/services/svpostnm.h> 27 #include <freetype/internal/services/svfntfmt.h> 28 #include <freetype/internal/services/svpsinfo.h> 29 #include <freetype/internal/services/svcid.h> 30 #include <freetype/internal/services/svprop.h> 31 #include <freetype/ftdriver.h> 32 33 #include <freetype/internal/psaux.h> 34 35 36 /************************************************************************** 37 * 38 * The macro FT_COMPONENT is used in trace mode. It is an implicit 39 * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log 40 * messages during execution. 41 */ 42 #undef FT_COMPONENT 43 #define FT_COMPONENT ciddriver 44 45 46 /* 47 * POSTSCRIPT NAME SERVICE 48 * 49 */ 50 51 FT_CALLBACK_DEF( const char* ) 52 cid_get_postscript_name( FT_Face face ) /* CID_Face */ 53 { 54 CID_Face cidface = (CID_Face)face; 55 const char* result = cidface->cid.cid_font_name; 56 57 58 if ( result && result[0] == '/' ) 59 result++; 60 61 return result; 62 } 63 64 65 static const FT_Service_PsFontNameRec cid_service_ps_name = 66 { 67 (FT_PsName_GetFunc)cid_get_postscript_name /* get_ps_font_name */ 68 }; 69 70 71 /* 72 * POSTSCRIPT INFO SERVICE 73 * 74 */ 75 76 FT_CALLBACK_DEF( FT_Error ) 77 cid_ps_get_font_info( FT_Face face, /* CID_Face */ 78 PS_FontInfoRec* afont_info ) 79 { 80 *afont_info = ( (CID_Face)face )->cid.font_info; 81 82 return FT_Err_Ok; 83 } 84 85 86 FT_CALLBACK_DEF( FT_Error ) 87 cid_ps_get_font_extra( FT_Face face, /* CID_Face */ 88 PS_FontExtraRec* afont_extra ) 89 { 90 *afont_extra = ( (CID_Face)face )->font_extra; 91 92 return FT_Err_Ok; 93 } 94 95 96 static const FT_Service_PsInfoRec cid_service_ps_info = 97 { 98 cid_ps_get_font_info, /* PS_GetFontInfoFunc ps_get_font_info */ 99 cid_ps_get_font_extra, /* PS_GetFontExtraFunc ps_get_font_extra */ 100 /* unsupported with CID fonts */ 101 NULL, /* PS_HasGlyphNamesFunc ps_has_glyph_names */ 102 /* unsupported */ 103 NULL, /* PS_GetFontPrivateFunc ps_get_font_private */ 104 /* not implemented */ 105 NULL /* PS_GetFontValueFunc ps_get_font_value */ 106 }; 107 108 109 /* 110 * CID INFO SERVICE 111 * 112 */ 113 FT_CALLBACK_DEF( FT_Error ) 114 cid_get_ros( FT_Face face, /* CID_Face */ 115 const char* *registry, 116 const char* *ordering, 117 FT_Int *supplement ) 118 { 119 CID_Face cidface = (CID_Face)face; 120 CID_FaceInfo cid = &cidface->cid; 121 122 123 if ( registry ) 124 *registry = cid->registry; 125 126 if ( ordering ) 127 *ordering = cid->ordering; 128 129 if ( supplement ) 130 *supplement = cid->supplement; 131 132 return FT_Err_Ok; 133 } 134 135 136 FT_CALLBACK_DEF( FT_Error ) 137 cid_get_is_cid( FT_Face face, /* CID_Face */ 138 FT_Bool *is_cid ) 139 { 140 FT_Error error = FT_Err_Ok; 141 FT_UNUSED( face ); 142 143 144 /* 145 * XXX: If the ROS is Adobe-Identity-H or -V, 146 * the font has no reliable information about 147 * its glyph collection. Should we not set 148 * *is_cid in such cases? 149 */ 150 if ( is_cid ) 151 *is_cid = 1; 152 153 return error; 154 } 155 156 157 FT_CALLBACK_DEF( FT_Error ) 158 cid_get_cid_from_glyph_index( FT_Face face, /* CID_Face */ 159 FT_UInt glyph_index, 160 FT_UInt *cid ) 161 { 162 FT_Error error = FT_Err_Ok; 163 CID_Face cidface = (CID_Face)face; 164 165 166 /* 167 * Currently, FreeType does not support incrementally-defined, CID-keyed 168 * fonts that store the glyph description data in a `/GlyphDirectory` 169 * array or dictionary. Fonts loaded by the incremental loading feature 170 * are thus not handled here. 171 */ 172 error = cid_compute_fd_and_offsets( cidface, glyph_index, 173 NULL, NULL, NULL ); 174 if ( error ) 175 *cid = 0; 176 else 177 *cid = glyph_index; 178 179 return error; 180 } 181 182 183 static const FT_Service_CIDRec cid_service_cid_info = 184 { 185 cid_get_ros, 186 /* FT_CID_GetRegistryOrderingSupplementFunc get_ros */ 187 cid_get_is_cid, 188 /* FT_CID_GetIsInternallyCIDKeyedFunc get_is_cid */ 189 cid_get_cid_from_glyph_index 190 /* FT_CID_GetCIDFromGlyphIndexFunc get_cid_from_glyph_index */ 191 }; 192 193 194 /* 195 * PROPERTY SERVICE 196 * 197 */ 198 199 FT_DEFINE_SERVICE_PROPERTIESREC( 200 cid_service_properties, 201 202 ps_property_set, /* FT_Properties_SetFunc set_property */ 203 ps_property_get /* FT_Properties_GetFunc get_property */ 204 ) 205 206 /* 207 * SERVICE LIST 208 * 209 */ 210 211 static const FT_ServiceDescRec cid_services[] = 212 { 213 { FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CID }, 214 { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cid_service_ps_name }, 215 { FT_SERVICE_ID_POSTSCRIPT_INFO, &cid_service_ps_info }, 216 { FT_SERVICE_ID_CID, &cid_service_cid_info }, 217 { FT_SERVICE_ID_PROPERTIES, &cid_service_properties }, 218 { NULL, NULL } 219 }; 220 221 222 FT_CALLBACK_DEF( FT_Module_Interface ) 223 cid_get_interface( FT_Module module, 224 const char* cid_interface ) 225 { 226 FT_UNUSED( module ); 227 228 return ft_service_list_lookup( cid_services, cid_interface ); 229 } 230 231 232 FT_CALLBACK_TABLE_DEF 233 const FT_Driver_ClassRec t1cid_driver_class = 234 { 235 { 236 FT_MODULE_FONT_DRIVER | 237 FT_MODULE_DRIVER_SCALABLE | 238 FT_MODULE_DRIVER_HAS_HINTER, 239 sizeof ( PS_DriverRec ), 240 241 "t1cid", /* module name */ 242 0x10000L, /* version 1.0 of driver */ 243 0x20000L, /* requires FreeType 2.0 */ 244 245 NULL, /* module-specific interface */ 246 247 cid_driver_init, /* FT_Module_Constructor module_init */ 248 cid_driver_done, /* FT_Module_Destructor module_done */ 249 cid_get_interface /* FT_Module_Requester get_interface */ 250 }, 251 252 sizeof ( CID_FaceRec ), 253 sizeof ( CID_SizeRec ), 254 sizeof ( CID_GlyphSlotRec ), 255 256 cid_face_init, /* FT_Face_InitFunc init_face */ 257 cid_face_done, /* FT_Face_DoneFunc done_face */ 258 cid_size_init, /* FT_Size_InitFunc init_size */ 259 cid_size_done, /* FT_Size_DoneFunc done_size */ 260 cid_slot_init, /* FT_Slot_InitFunc init_slot */ 261 cid_slot_done, /* FT_Slot_DoneFunc done_slot */ 262 263 cid_slot_load_glyph, /* FT_Slot_LoadFunc load_glyph */ 264 265 NULL, /* FT_Face_GetKerningFunc get_kerning */ 266 NULL, /* FT_Face_AttachFunc attach_file */ 267 NULL, /* FT_Face_GetAdvancesFunc get_advances */ 268 269 cid_size_request, /* FT_Size_RequestFunc request_size */ 270 NULL /* FT_Size_SelectFunc select_size */ 271 }; 272 273 274 /* END */