1 /***************************************************************************/ 2 /* */ 3 /* cidobjs.c */ 4 /* */ 5 /* CID objects manager (body). */ 6 /* */ 7 /* Copyright 1996-2017 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 <ft2build.h> 20 #include FT_INTERNAL_DEBUG_H 21 #include FT_INTERNAL_STREAM_H 22 23 #include "cidgload.h" 24 #include "cidload.h" 25 26 #include FT_SERVICE_POSTSCRIPT_CMAPS_H 27 #include FT_INTERNAL_POSTSCRIPT_AUX_H 28 #include FT_INTERNAL_POSTSCRIPT_HINTS_H 29 30 #include "ciderrs.h" 31 32 33 /*************************************************************************/ 34 /* */ 35 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 36 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 37 /* messages during execution. */ 38 /* */ 39 #undef FT_COMPONENT 40 #define FT_COMPONENT trace_cidobjs 41 42 43 /*************************************************************************/ 44 /* */ 45 /* SLOT FUNCTIONS */ 46 /* */ 47 /*************************************************************************/ 48 49 FT_LOCAL_DEF( void ) cid_slot_done(FT_GlyphSlot slot)50 cid_slot_done( FT_GlyphSlot slot ) 51 { 52 slot->internal->glyph_hints = NULL; 53 } 54 55 56 FT_LOCAL_DEF( FT_Error ) cid_slot_init(FT_GlyphSlot slot)57 cid_slot_init( FT_GlyphSlot slot ) 58 { 59 CID_Face face; 60 PSHinter_Service pshinter; 61 62 63 face = (CID_Face)slot->face; 64 pshinter = (PSHinter_Service)face->pshinter; 65 66 if ( pshinter ) 67 { 68 FT_Module module; 69 70 71 module = FT_Get_Module( slot->face->driver->root.library, 72 "pshinter" ); 73 if ( module ) 74 { 75 T1_Hints_Funcs funcs; 76 77 78 funcs = pshinter->get_t1_funcs( module ); 79 slot->internal->glyph_hints = (void*)funcs; 80 } 81 } 82 83 return 0; 84 } 85 86 87 /*************************************************************************/ 88 /* */ 89 /* SIZE FUNCTIONS */ 90 /* */ 91 /*************************************************************************/ 92 93 94 static PSH_Globals_Funcs cid_size_get_globals_funcs(CID_Size size)95 cid_size_get_globals_funcs( CID_Size size ) 96 { 97 CID_Face face = (CID_Face)size->root.face; 98 PSHinter_Service pshinter = (PSHinter_Service)face->pshinter; 99 FT_Module module; 100 101 102 module = FT_Get_Module( size->root.face->driver->root.library, 103 "pshinter" ); 104 return ( module && pshinter && pshinter->get_globals_funcs ) 105 ? pshinter->get_globals_funcs( module ) 106 : 0; 107 } 108 109 110 FT_LOCAL_DEF( void ) cid_size_done(FT_Size cidsize)111 cid_size_done( FT_Size cidsize ) /* CID_Size */ 112 { 113 CID_Size size = (CID_Size)cidsize; 114 115 116 if ( cidsize->internal->module_data ) 117 { 118 PSH_Globals_Funcs funcs; 119 120 121 funcs = cid_size_get_globals_funcs( size ); 122 if ( funcs ) 123 funcs->destroy( (PSH_Globals)cidsize->internal->module_data ); 124 125 cidsize->internal->module_data = NULL; 126 } 127 } 128 129 130 FT_LOCAL_DEF( FT_Error ) cid_size_init(FT_Size cidsize)131 cid_size_init( FT_Size cidsize ) /* CID_Size */ 132 { 133 CID_Size size = (CID_Size)cidsize; 134 FT_Error error = FT_Err_Ok; 135 PSH_Globals_Funcs funcs = cid_size_get_globals_funcs( size ); 136 137 138 if ( funcs ) 139 { 140 PSH_Globals globals; 141 CID_Face face = (CID_Face)cidsize->face; 142 CID_FaceDict dict = face->cid.font_dicts + face->root.face_index; 143 PS_Private priv = &dict->private_dict; 144 145 146 error = funcs->create( cidsize->face->memory, priv, &globals ); 147 if ( !error ) 148 cidsize->internal->module_data = globals; 149 } 150 151 return error; 152 } 153 154 155 FT_LOCAL( FT_Error ) cid_size_request(FT_Size size,FT_Size_Request req)156 cid_size_request( FT_Size size, 157 FT_Size_Request req ) 158 { 159 PSH_Globals_Funcs funcs; 160 161 162 FT_Request_Metrics( size->face, req ); 163 164 funcs = cid_size_get_globals_funcs( (CID_Size)size ); 165 166 if ( funcs ) 167 funcs->set_scale( (PSH_Globals)size->internal->module_data, 168 size->metrics.x_scale, 169 size->metrics.y_scale, 170 0, 0 ); 171 172 return FT_Err_Ok; 173 } 174 175 176 /*************************************************************************/ 177 /* */ 178 /* FACE FUNCTIONS */ 179 /* */ 180 /*************************************************************************/ 181 182 /*************************************************************************/ 183 /* */ 184 /* <Function> */ 185 /* cid_face_done */ 186 /* */ 187 /* <Description> */ 188 /* Finalizes a given face object. */ 189 /* */ 190 /* <Input> */ 191 /* face :: A pointer to the face object to destroy. */ 192 /* */ 193 FT_LOCAL_DEF( void ) cid_face_done(FT_Face cidface)194 cid_face_done( FT_Face cidface ) /* CID_Face */ 195 { 196 CID_Face face = (CID_Face)cidface; 197 FT_Memory memory; 198 CID_FaceInfo cid; 199 PS_FontInfo info; 200 201 202 if ( !face ) 203 return; 204 205 cid = &face->cid; 206 info = &cid->font_info; 207 memory = cidface->memory; 208 209 /* release subrs */ 210 if ( face->subrs ) 211 { 212 FT_Int n; 213 214 215 for ( n = 0; n < cid->num_dicts; n++ ) 216 { 217 CID_Subrs subr = face->subrs + n; 218 219 220 if ( subr->code ) 221 { 222 FT_FREE( subr->code[0] ); 223 FT_FREE( subr->code ); 224 } 225 } 226 227 FT_FREE( face->subrs ); 228 } 229 230 /* release FontInfo strings */ 231 FT_FREE( info->version ); 232 FT_FREE( info->notice ); 233 FT_FREE( info->full_name ); 234 FT_FREE( info->family_name ); 235 FT_FREE( info->weight ); 236 237 /* release font dictionaries */ 238 FT_FREE( cid->font_dicts ); 239 cid->num_dicts = 0; 240 241 /* release other strings */ 242 FT_FREE( cid->cid_font_name ); 243 FT_FREE( cid->registry ); 244 FT_FREE( cid->ordering ); 245 246 cidface->family_name = NULL; 247 cidface->style_name = NULL; 248 249 FT_FREE( face->binary_data ); 250 FT_FREE( face->cid_stream ); 251 } 252 253 254 /*************************************************************************/ 255 /* */ 256 /* <Function> */ 257 /* cid_face_init */ 258 /* */ 259 /* <Description> */ 260 /* Initializes a given CID face object. */ 261 /* */ 262 /* <Input> */ 263 /* stream :: The source font stream. */ 264 /* */ 265 /* face_index :: The index of the font face in the resource. */ 266 /* */ 267 /* num_params :: Number of additional generic parameters. Ignored. */ 268 /* */ 269 /* params :: Additional generic parameters. Ignored. */ 270 /* */ 271 /* <InOut> */ 272 /* face :: The newly built face object. */ 273 /* */ 274 /* <Return> */ 275 /* FreeType error code. 0 means success. */ 276 /* */ 277 FT_LOCAL_DEF( FT_Error ) cid_face_init(FT_Stream stream,FT_Face cidface,FT_Int face_index,FT_Int num_params,FT_Parameter * params)278 cid_face_init( FT_Stream stream, 279 FT_Face cidface, /* CID_Face */ 280 FT_Int face_index, 281 FT_Int num_params, 282 FT_Parameter* params ) 283 { 284 CID_Face face = (CID_Face)cidface; 285 FT_Error error; 286 PSAux_Service psaux; 287 PSHinter_Service pshinter; 288 289 FT_UNUSED( num_params ); 290 FT_UNUSED( params ); 291 FT_UNUSED( stream ); 292 293 294 cidface->num_faces = 1; 295 296 psaux = (PSAux_Service)face->psaux; 297 if ( !psaux ) 298 { 299 psaux = (PSAux_Service)FT_Get_Module_Interface( 300 FT_FACE_LIBRARY( face ), "psaux" ); 301 302 if ( !psaux ) 303 { 304 FT_ERROR(( "cid_face_init: cannot access `psaux' module\n" )); 305 error = FT_THROW( Missing_Module ); 306 goto Exit; 307 } 308 309 face->psaux = psaux; 310 } 311 312 pshinter = (PSHinter_Service)face->pshinter; 313 if ( !pshinter ) 314 { 315 pshinter = (PSHinter_Service)FT_Get_Module_Interface( 316 FT_FACE_LIBRARY( face ), "pshinter" ); 317 318 face->pshinter = pshinter; 319 } 320 321 FT_TRACE2(( "CID driver\n" )); 322 323 /* open the tokenizer; this will also check the font format */ 324 if ( FT_STREAM_SEEK( 0 ) ) 325 goto Exit; 326 327 error = cid_face_open( face, face_index ); 328 if ( error ) 329 goto Exit; 330 331 /* if we just wanted to check the format, leave successfully now */ 332 if ( face_index < 0 ) 333 goto Exit; 334 335 /* check the face index */ 336 /* XXX: handle CID fonts with more than a single face */ 337 if ( ( face_index & 0xFFFF ) != 0 ) 338 { 339 FT_ERROR(( "cid_face_init: invalid face index\n" )); 340 error = FT_THROW( Invalid_Argument ); 341 goto Exit; 342 } 343 344 /* now load the font program into the face object */ 345 346 /* initialize the face object fields */ 347 348 /* set up root face fields */ 349 { 350 CID_FaceInfo cid = &face->cid; 351 PS_FontInfo info = &cid->font_info; 352 353 354 cidface->num_glyphs = (FT_Long)cid->cid_count; 355 cidface->num_charmaps = 0; 356 357 cidface->face_index = face_index & 0xFFFF; 358 359 cidface->face_flags |= FT_FACE_FLAG_SCALABLE | /* scalable outlines */ 360 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ 361 FT_FACE_FLAG_HINTER; /* has native hinter */ 362 363 if ( info->is_fixed_pitch ) 364 cidface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; 365 366 /* XXX: TODO: add kerning with .afm support */ 367 368 /* get style name -- be careful, some broken fonts only */ 369 /* have a /FontName dictionary entry! */ 370 cidface->family_name = info->family_name; 371 /* assume "Regular" style if we don't know better */ 372 cidface->style_name = (char *)"Regular"; 373 if ( cidface->family_name ) 374 { 375 char* full = info->full_name; 376 char* family = cidface->family_name; 377 378 379 if ( full ) 380 { 381 while ( *full ) 382 { 383 if ( *full == *family ) 384 { 385 family++; 386 full++; 387 } 388 else 389 { 390 if ( *full == ' ' || *full == '-' ) 391 full++; 392 else if ( *family == ' ' || *family == '-' ) 393 family++; 394 else 395 { 396 if ( !*family ) 397 cidface->style_name = full; 398 break; 399 } 400 } 401 } 402 } 403 } 404 else 405 { 406 /* do we have a `/FontName'? */ 407 if ( cid->cid_font_name ) 408 cidface->family_name = cid->cid_font_name; 409 } 410 411 /* compute style flags */ 412 cidface->style_flags = 0; 413 if ( info->italic_angle ) 414 cidface->style_flags |= FT_STYLE_FLAG_ITALIC; 415 if ( info->weight ) 416 { 417 if ( !ft_strcmp( info->weight, "Bold" ) || 418 !ft_strcmp( info->weight, "Black" ) ) 419 cidface->style_flags |= FT_STYLE_FLAG_BOLD; 420 } 421 422 /* no embedded bitmap support */ 423 cidface->num_fixed_sizes = 0; 424 cidface->available_sizes = NULL; 425 426 cidface->bbox.xMin = cid->font_bbox.xMin >> 16; 427 cidface->bbox.yMin = cid->font_bbox.yMin >> 16; 428 /* no `U' suffix here to 0xFFFF! */ 429 cidface->bbox.xMax = ( cid->font_bbox.xMax + 0xFFFF ) >> 16; 430 cidface->bbox.yMax = ( cid->font_bbox.yMax + 0xFFFF ) >> 16; 431 432 if ( !cidface->units_per_EM ) 433 cidface->units_per_EM = 1000; 434 435 cidface->ascender = (FT_Short)( cidface->bbox.yMax ); 436 cidface->descender = (FT_Short)( cidface->bbox.yMin ); 437 438 cidface->height = (FT_Short)( ( cidface->units_per_EM * 12 ) / 10 ); 439 if ( cidface->height < cidface->ascender - cidface->descender ) 440 cidface->height = (FT_Short)( cidface->ascender - cidface->descender ); 441 442 cidface->underline_position = (FT_Short)info->underline_position; 443 cidface->underline_thickness = (FT_Short)info->underline_thickness; 444 } 445 446 Exit: 447 return error; 448 } 449 450 451 /*************************************************************************/ 452 /* */ 453 /* <Function> */ 454 /* cid_driver_init */ 455 /* */ 456 /* <Description> */ 457 /* Initializes a given CID driver object. */ 458 /* */ 459 /* <Input> */ 460 /* driver :: A handle to the target driver object. */ 461 /* */ 462 /* <Return> */ 463 /* FreeType error code. 0 means success. */ 464 /* */ 465 FT_LOCAL_DEF( FT_Error ) cid_driver_init(FT_Module driver)466 cid_driver_init( FT_Module driver ) 467 { 468 FT_UNUSED( driver ); 469 470 return FT_Err_Ok; 471 } 472 473 474 /*************************************************************************/ 475 /* */ 476 /* <Function> */ 477 /* cid_driver_done */ 478 /* */ 479 /* <Description> */ 480 /* Finalizes a given CID driver. */ 481 /* */ 482 /* <Input> */ 483 /* driver :: A handle to the target CID driver. */ 484 /* */ 485 FT_LOCAL_DEF( void ) cid_driver_done(FT_Module driver)486 cid_driver_done( FT_Module driver ) 487 { 488 FT_UNUSED( driver ); 489 } 490 491 492 /* END */ 493