1 /***************************************************************************/ 2 /* */ 3 /* cidobjs.c */ 4 /* */ 5 /* CID objects manager (body). */ 6 /* */ 7 /* Copyright 1996-2006, 2008, 2010-2011, 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 "../../include/freetype/internal/ftstream.h" 22 23 #include "cidgload.h" 24 #include "cidload.h" 25 26 #include "../../include/freetype/internal/services/svpscmap.h" 27 #include "../../include/freetype/internal/psaux.h" 28 #include "../../include/freetype/internal/pshints.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 ) 50 cid_slot_done( FT_GlyphSlot slot ) 51 { 52 slot->internal->glyph_hints = 0; 53 } 54 55 56 FT_LOCAL_DEF( FT_Error ) 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 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 ) 111 cid_size_done( FT_Size cidsize ) /* CID_Size */ 112 { 113 CID_Size size = (CID_Size)cidsize; 114 115 116 if ( cidsize->internal ) 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 ); 124 125 cidsize->internal = 0; 126 } 127 } 128 129 130 FT_LOCAL_DEF( FT_Error ) 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 = (FT_Size_Internal)(void*)globals; 149 } 150 151 return error; 152 } 153 154 155 FT_LOCAL( FT_Error ) 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, 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 ) 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 = 0; 247 cidface->style_name = 0; 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 ) 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 != 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 = cid->cid_count; 355 cidface->num_charmaps = 0; 356 357 cidface->face_index = face_index; 358 cidface->face_flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */ 359 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ 360 FT_FACE_FLAG_HINTER; /* has native hinter */ 361 362 if ( info->is_fixed_pitch ) 363 cidface->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; 364 365 /* XXX: TODO: add kerning with .afm support */ 366 367 /* get style name -- be careful, some broken fonts only */ 368 /* have a /FontName dictionary entry! */ 369 cidface->family_name = info->family_name; 370 /* assume "Regular" style if we don't know better */ 371 cidface->style_name = (char *)"Regular"; 372 if ( cidface->family_name ) 373 { 374 char* full = info->full_name; 375 char* family = cidface->family_name; 376 377 378 if ( full ) 379 { 380 while ( *full ) 381 { 382 if ( *full == *family ) 383 { 384 family++; 385 full++; 386 } 387 else 388 { 389 if ( *full == ' ' || *full == '-' ) 390 full++; 391 else if ( *family == ' ' || *family == '-' ) 392 family++; 393 else 394 { 395 if ( !*family ) 396 cidface->style_name = full; 397 break; 398 } 399 } 400 } 401 } 402 } 403 else 404 { 405 /* do we have a `/FontName'? */ 406 if ( cid->cid_font_name ) 407 cidface->family_name = cid->cid_font_name; 408 } 409 410 /* compute style flags */ 411 cidface->style_flags = 0; 412 if ( info->italic_angle ) 413 cidface->style_flags |= FT_STYLE_FLAG_ITALIC; 414 if ( info->weight ) 415 { 416 if ( !ft_strcmp( info->weight, "Bold" ) || 417 !ft_strcmp( info->weight, "Black" ) ) 418 cidface->style_flags |= FT_STYLE_FLAG_BOLD; 419 } 420 421 /* no embedded bitmap support */ 422 cidface->num_fixed_sizes = 0; 423 cidface->available_sizes = 0; 424 425 cidface->bbox.xMin = cid->font_bbox.xMin >> 16; 426 cidface->bbox.yMin = cid->font_bbox.yMin >> 16; 427 /* no `U' suffix here to 0xFFFF! */ 428 cidface->bbox.xMax = ( cid->font_bbox.xMax + 0xFFFF ) >> 16; 429 cidface->bbox.yMax = ( cid->font_bbox.yMax + 0xFFFF ) >> 16; 430 431 if ( !cidface->units_per_EM ) 432 cidface->units_per_EM = 1000; 433 434 cidface->ascender = (FT_Short)( cidface->bbox.yMax ); 435 cidface->descender = (FT_Short)( cidface->bbox.yMin ); 436 437 cidface->height = (FT_Short)( ( cidface->units_per_EM * 12 ) / 10 ); 438 if ( cidface->height < cidface->ascender - cidface->descender ) 439 cidface->height = (FT_Short)( cidface->ascender - cidface->descender ); 440 441 cidface->underline_position = (FT_Short)info->underline_position; 442 cidface->underline_thickness = (FT_Short)info->underline_thickness; 443 } 444 445 Exit: 446 return error; 447 } 448 449 450 /*************************************************************************/ 451 /* */ 452 /* <Function> */ 453 /* cid_driver_init */ 454 /* */ 455 /* <Description> */ 456 /* Initializes a given CID driver object. */ 457 /* */ 458 /* <Input> */ 459 /* driver :: A handle to the target driver object. */ 460 /* */ 461 /* <Return> */ 462 /* FreeType error code. 0 means success. */ 463 /* */ 464 FT_LOCAL_DEF( FT_Error ) 465 cid_driver_init( FT_Module driver ) 466 { 467 FT_UNUSED( driver ); 468 469 return FT_Err_Ok; 470 } 471 472 473 /*************************************************************************/ 474 /* */ 475 /* <Function> */ 476 /* cid_driver_done */ 477 /* */ 478 /* <Description> */ 479 /* Finalizes a given CID driver. */ 480 /* */ 481 /* <Input> */ 482 /* driver :: A handle to the target CID driver. */ 483 /* */ 484 FT_LOCAL_DEF( void ) 485 cid_driver_done( FT_Module driver ) 486 { 487 FT_UNUSED( driver ); 488 } 489 490 491 /* END */ 492