1 /**************************************************************************** 2 * 3 * cffdrivr.c 4 * 5 * OpenType font driver implementation (body). 6 * 7 * Copyright (C) 1996-2019 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_FREETYPE_H 21 #include FT_INTERNAL_DEBUG_H 22 #include FT_INTERNAL_STREAM_H 23 #include FT_INTERNAL_SFNT_H 24 #include FT_INTERNAL_POSTSCRIPT_AUX_H 25 #include FT_INTERNAL_POSTSCRIPT_PROPS_H 26 #include FT_SERVICE_CID_H 27 #include FT_SERVICE_POSTSCRIPT_INFO_H 28 #include FT_SERVICE_POSTSCRIPT_NAME_H 29 #include FT_SERVICE_TT_CMAP_H 30 #include FT_SERVICE_CFF_TABLE_LOAD_H 31 32 #include "cffdrivr.h" 33 #include "cffgload.h" 34 #include "cffload.h" 35 #include "cffcmap.h" 36 #include "cffparse.h" 37 #include "cffobjs.h" 38 39 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT 40 #include FT_SERVICE_MULTIPLE_MASTERS_H 41 #include FT_SERVICE_METRICS_VARIATIONS_H 42 #endif 43 44 #include "cfferrs.h" 45 46 #include FT_SERVICE_FONT_FORMAT_H 47 #include FT_SERVICE_GLYPH_DICT_H 48 #include FT_SERVICE_PROPERTIES_H 49 #include FT_DRIVER_H 50 51 52 /************************************************************************** 53 * 54 * The macro FT_COMPONENT is used in trace mode. It is an implicit 55 * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log 56 * messages during execution. 57 */ 58 #undef FT_COMPONENT 59 #define FT_COMPONENT cffdriver 60 61 62 /*************************************************************************/ 63 /*************************************************************************/ 64 /*************************************************************************/ 65 /**** ****/ 66 /**** ****/ 67 /**** F A C E S ****/ 68 /**** ****/ 69 /**** ****/ 70 /*************************************************************************/ 71 /*************************************************************************/ 72 /*************************************************************************/ 73 74 75 /************************************************************************** 76 * 77 * @Function: 78 * cff_get_kerning 79 * 80 * @Description: 81 * A driver method used to return the kerning vector between two 82 * glyphs of the same face. 83 * 84 * @Input: 85 * face :: 86 * A handle to the source face object. 87 * 88 * left_glyph :: 89 * The index of the left glyph in the kern pair. 90 * 91 * right_glyph :: 92 * The index of the right glyph in the kern pair. 93 * 94 * @Output: 95 * kerning :: 96 * The kerning vector. This is in font units for 97 * scalable formats, and in pixels for fixed-sizes 98 * formats. 99 * 100 * @Return: 101 * FreeType error code. 0 means success. 102 * 103 * @Note: 104 * Only horizontal layouts (left-to-right & right-to-left) are 105 * supported by this function. Other layouts, or more sophisticated 106 * kernings, are out of scope of this method (the basic driver 107 * interface is meant to be simple). 108 * 109 * They can be implemented by format-specific interfaces. 110 */ 111 FT_CALLBACK_DEF( FT_Error ) cff_get_kerning(FT_Face ttface,FT_UInt left_glyph,FT_UInt right_glyph,FT_Vector * kerning)112 cff_get_kerning( FT_Face ttface, /* TT_Face */ 113 FT_UInt left_glyph, 114 FT_UInt right_glyph, 115 FT_Vector* kerning ) 116 { 117 TT_Face face = (TT_Face)ttface; 118 SFNT_Service sfnt = (SFNT_Service)face->sfnt; 119 120 121 kerning->x = 0; 122 kerning->y = 0; 123 124 if ( sfnt ) 125 kerning->x = sfnt->get_kerning( face, left_glyph, right_glyph ); 126 127 return FT_Err_Ok; 128 } 129 130 131 /************************************************************************** 132 * 133 * @Function: 134 * cff_glyph_load 135 * 136 * @Description: 137 * A driver method used to load a glyph within a given glyph slot. 138 * 139 * @Input: 140 * slot :: 141 * A handle to the target slot object where the glyph 142 * will be loaded. 143 * 144 * size :: 145 * A handle to the source face size at which the glyph 146 * must be scaled, loaded, etc. 147 * 148 * glyph_index :: 149 * The index of the glyph in the font file. 150 * 151 * load_flags :: 152 * A flag indicating what to load for this glyph. The 153 * FT_LOAD_??? constants can be used to control the 154 * glyph loading process (e.g., whether the outline 155 * should be scaled, whether to load bitmaps or not, 156 * whether to hint the outline, etc). 157 * 158 * @Return: 159 * FreeType error code. 0 means success. 160 */ 161 FT_CALLBACK_DEF( FT_Error ) cff_glyph_load(FT_GlyphSlot cffslot,FT_Size cffsize,FT_UInt glyph_index,FT_Int32 load_flags)162 cff_glyph_load( FT_GlyphSlot cffslot, /* CFF_GlyphSlot */ 163 FT_Size cffsize, /* CFF_Size */ 164 FT_UInt glyph_index, 165 FT_Int32 load_flags ) 166 { 167 FT_Error error; 168 CFF_GlyphSlot slot = (CFF_GlyphSlot)cffslot; 169 CFF_Size size = (CFF_Size)cffsize; 170 171 172 if ( !slot ) 173 return FT_THROW( Invalid_Slot_Handle ); 174 175 FT_TRACE1(( "cff_glyph_load: glyph index %d\n", glyph_index )); 176 177 /* check whether we want a scaled outline or bitmap */ 178 if ( !size ) 179 load_flags |= FT_LOAD_NO_SCALE | FT_LOAD_NO_HINTING; 180 181 /* reset the size object if necessary */ 182 if ( load_flags & FT_LOAD_NO_SCALE ) 183 size = NULL; 184 185 if ( size ) 186 { 187 /* these two objects must have the same parent */ 188 if ( cffsize->face != cffslot->face ) 189 return FT_THROW( Invalid_Face_Handle ); 190 } 191 192 /* now load the glyph outline if necessary */ 193 error = cff_slot_load( slot, size, glyph_index, load_flags ); 194 195 /* force drop-out mode to 2 - irrelevant now */ 196 /* slot->outline.dropout_mode = 2; */ 197 198 return error; 199 } 200 201 202 FT_CALLBACK_DEF( FT_Error ) cff_get_advances(FT_Face face,FT_UInt start,FT_UInt count,FT_Int32 flags,FT_Fixed * advances)203 cff_get_advances( FT_Face face, 204 FT_UInt start, 205 FT_UInt count, 206 FT_Int32 flags, 207 FT_Fixed* advances ) 208 { 209 FT_UInt nn; 210 FT_Error error = FT_Err_Ok; 211 FT_GlyphSlot slot = face->glyph; 212 213 214 if ( FT_IS_SFNT( face ) ) 215 { 216 /* OpenType 1.7 mandates that the data from `hmtx' table be used; */ 217 /* it is no longer necessary that those values are identical to */ 218 /* the values in the `CFF' table */ 219 220 TT_Face ttface = (TT_Face)face; 221 FT_Short dummy; 222 223 224 if ( flags & FT_LOAD_VERTICAL_LAYOUT ) 225 { 226 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT 227 /* no fast retrieval for blended MM fonts without VVAR table */ 228 if ( ( FT_IS_NAMED_INSTANCE( face ) || FT_IS_VARIATION( face ) ) && 229 !( ttface->variation_support & TT_FACE_FLAG_VAR_VADVANCE ) ) 230 return FT_THROW( Unimplemented_Feature ); 231 #endif 232 233 /* check whether we have data from the `vmtx' table at all; */ 234 /* otherwise we extract the info from the CFF glyphstrings */ 235 /* (instead of synthesizing a global value using the `OS/2' */ 236 /* table) */ 237 if ( !ttface->vertical_info ) 238 goto Missing_Table; 239 240 for ( nn = 0; nn < count; nn++ ) 241 { 242 FT_UShort ah; 243 244 245 ( (SFNT_Service)ttface->sfnt )->get_metrics( ttface, 246 1, 247 start + nn, 248 &dummy, 249 &ah ); 250 251 FT_TRACE5(( " idx %d: advance height %d font unit%s\n", 252 start + nn, 253 ah, 254 ah == 1 ? "" : "s" )); 255 advances[nn] = ah; 256 } 257 } 258 else 259 { 260 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT 261 /* no fast retrieval for blended MM fonts without HVAR table */ 262 if ( ( FT_IS_NAMED_INSTANCE( face ) || FT_IS_VARIATION( face ) ) && 263 !( ttface->variation_support & TT_FACE_FLAG_VAR_HADVANCE ) ) 264 return FT_THROW( Unimplemented_Feature ); 265 #endif 266 267 /* check whether we have data from the `hmtx' table at all */ 268 if ( !ttface->horizontal.number_Of_HMetrics ) 269 goto Missing_Table; 270 271 for ( nn = 0; nn < count; nn++ ) 272 { 273 FT_UShort aw; 274 275 276 ( (SFNT_Service)ttface->sfnt )->get_metrics( ttface, 277 0, 278 start + nn, 279 &dummy, 280 &aw ); 281 282 FT_TRACE5(( " idx %d: advance width %d font unit%s\n", 283 start + nn, 284 aw, 285 aw == 1 ? "" : "s" )); 286 advances[nn] = aw; 287 } 288 } 289 290 return error; 291 } 292 293 Missing_Table: 294 flags |= (FT_UInt32)FT_LOAD_ADVANCE_ONLY; 295 296 for ( nn = 0; nn < count; nn++ ) 297 { 298 error = cff_glyph_load( slot, face->size, start + nn, flags ); 299 if ( error ) 300 break; 301 302 advances[nn] = ( flags & FT_LOAD_VERTICAL_LAYOUT ) 303 ? slot->linearVertAdvance 304 : slot->linearHoriAdvance; 305 } 306 307 return error; 308 } 309 310 311 /* 312 * GLYPH DICT SERVICE 313 * 314 */ 315 316 static FT_Error cff_get_glyph_name(CFF_Face face,FT_UInt glyph_index,FT_Pointer buffer,FT_UInt buffer_max)317 cff_get_glyph_name( CFF_Face face, 318 FT_UInt glyph_index, 319 FT_Pointer buffer, 320 FT_UInt buffer_max ) 321 { 322 CFF_Font font = (CFF_Font)face->extra.data; 323 FT_String* gname; 324 FT_UShort sid; 325 FT_Error error; 326 327 328 /* CFF2 table does not have glyph names; */ 329 /* we need to use `post' table method */ 330 if ( font->version_major == 2 ) 331 { 332 FT_Library library = FT_FACE_LIBRARY( face ); 333 FT_Module sfnt_module = FT_Get_Module( library, "sfnt" ); 334 FT_Service_GlyphDict service = 335 (FT_Service_GlyphDict)ft_module_get_service( 336 sfnt_module, 337 FT_SERVICE_ID_GLYPH_DICT, 338 0 ); 339 340 341 if ( service && service->get_name ) 342 return service->get_name( FT_FACE( face ), 343 glyph_index, 344 buffer, 345 buffer_max ); 346 else 347 { 348 FT_ERROR(( "cff_get_glyph_name:" 349 " cannot get glyph name from a CFF2 font\n" 350 " " 351 " without the `psnames' module\n" )); 352 error = FT_THROW( Missing_Module ); 353 goto Exit; 354 } 355 } 356 357 if ( !font->psnames ) 358 { 359 FT_ERROR(( "cff_get_glyph_name:" 360 " cannot get glyph name from CFF & CEF fonts\n" 361 " " 362 " without the `psnames' module\n" )); 363 error = FT_THROW( Missing_Module ); 364 goto Exit; 365 } 366 367 /* first, locate the sid in the charset table */ 368 sid = font->charset.sids[glyph_index]; 369 370 /* now, lookup the name itself */ 371 gname = cff_index_get_sid_string( font, sid ); 372 373 if ( gname ) 374 FT_STRCPYN( buffer, gname, buffer_max ); 375 376 error = FT_Err_Ok; 377 378 Exit: 379 return error; 380 } 381 382 383 static FT_UInt cff_get_name_index(CFF_Face face,const FT_String * glyph_name)384 cff_get_name_index( CFF_Face face, 385 const FT_String* glyph_name ) 386 { 387 CFF_Font cff; 388 CFF_Charset charset; 389 FT_Service_PsCMaps psnames; 390 FT_String* name; 391 FT_UShort sid; 392 FT_UInt i; 393 394 395 cff = (CFF_FontRec *)face->extra.data; 396 charset = &cff->charset; 397 398 /* CFF2 table does not have glyph names; */ 399 /* we need to use `post' table method */ 400 if ( cff->version_major == 2 ) 401 { 402 FT_Library library = FT_FACE_LIBRARY( face ); 403 FT_Module sfnt_module = FT_Get_Module( library, "sfnt" ); 404 FT_Service_GlyphDict service = 405 (FT_Service_GlyphDict)ft_module_get_service( 406 sfnt_module, 407 FT_SERVICE_ID_GLYPH_DICT, 408 0 ); 409 410 411 if ( service && service->name_index ) 412 return service->name_index( FT_FACE( face ), glyph_name ); 413 else 414 { 415 FT_ERROR(( "cff_get_name_index:" 416 " cannot get glyph index from a CFF2 font\n" 417 " " 418 " without the `psnames' module\n" )); 419 return 0; 420 } 421 } 422 423 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); 424 if ( !psnames ) 425 return 0; 426 427 for ( i = 0; i < cff->num_glyphs; i++ ) 428 { 429 sid = charset->sids[i]; 430 431 if ( sid > 390 ) 432 name = cff_index_get_string( cff, sid - 391 ); 433 else 434 name = (FT_String *)psnames->adobe_std_strings( sid ); 435 436 if ( !name ) 437 continue; 438 439 if ( !ft_strcmp( glyph_name, name ) ) 440 return i; 441 } 442 443 return 0; 444 } 445 446 447 FT_DEFINE_SERVICE_GLYPHDICTREC( 448 cff_service_glyph_dict, 449 450 (FT_GlyphDict_GetNameFunc) cff_get_glyph_name, /* get_name */ 451 (FT_GlyphDict_NameIndexFunc)cff_get_name_index /* name_index */ 452 ) 453 454 455 /* 456 * POSTSCRIPT INFO SERVICE 457 * 458 */ 459 460 static FT_Int cff_ps_has_glyph_names(FT_Face face)461 cff_ps_has_glyph_names( FT_Face face ) 462 { 463 return ( face->face_flags & FT_FACE_FLAG_GLYPH_NAMES ) > 0; 464 } 465 466 467 static FT_Error cff_ps_get_font_info(CFF_Face face,PS_FontInfoRec * afont_info)468 cff_ps_get_font_info( CFF_Face face, 469 PS_FontInfoRec* afont_info ) 470 { 471 CFF_Font cff = (CFF_Font)face->extra.data; 472 FT_Error error = FT_Err_Ok; 473 474 475 if ( cff && !cff->font_info ) 476 { 477 CFF_FontRecDict dict = &cff->top_font.font_dict; 478 PS_FontInfoRec *font_info = NULL; 479 FT_Memory memory = face->root.memory; 480 481 482 if ( FT_ALLOC( font_info, sizeof ( *font_info ) ) ) 483 goto Fail; 484 485 font_info->version = cff_index_get_sid_string( cff, 486 dict->version ); 487 font_info->notice = cff_index_get_sid_string( cff, 488 dict->notice ); 489 font_info->full_name = cff_index_get_sid_string( cff, 490 dict->full_name ); 491 font_info->family_name = cff_index_get_sid_string( cff, 492 dict->family_name ); 493 font_info->weight = cff_index_get_sid_string( cff, 494 dict->weight ); 495 font_info->italic_angle = dict->italic_angle; 496 font_info->is_fixed_pitch = dict->is_fixed_pitch; 497 font_info->underline_position = (FT_Short)dict->underline_position; 498 font_info->underline_thickness = (FT_UShort)dict->underline_thickness; 499 500 cff->font_info = font_info; 501 } 502 503 if ( cff ) 504 *afont_info = *cff->font_info; 505 506 Fail: 507 return error; 508 } 509 510 511 static FT_Error cff_ps_get_font_extra(CFF_Face face,PS_FontExtraRec * afont_extra)512 cff_ps_get_font_extra( CFF_Face face, 513 PS_FontExtraRec* afont_extra ) 514 { 515 CFF_Font cff = (CFF_Font)face->extra.data; 516 FT_Error error = FT_Err_Ok; 517 518 519 if ( cff && cff->font_extra == NULL ) 520 { 521 CFF_FontRecDict dict = &cff->top_font.font_dict; 522 PS_FontExtraRec* font_extra = NULL; 523 FT_Memory memory = face->root.memory; 524 FT_String* embedded_postscript; 525 526 527 if ( FT_ALLOC( font_extra, sizeof ( *font_extra ) ) ) 528 goto Fail; 529 530 font_extra->fs_type = 0U; 531 532 embedded_postscript = cff_index_get_sid_string( 533 cff, 534 dict->embedded_postscript ); 535 if ( embedded_postscript ) 536 { 537 FT_String* start_fstype; 538 FT_String* start_def; 539 540 541 /* Identify the XYZ integer in `/FSType XYZ def' substring. */ 542 if ( ( start_fstype = ft_strstr( embedded_postscript, 543 "/FSType" ) ) != NULL && 544 ( start_def = ft_strstr( start_fstype + 545 sizeof ( "/FSType" ) - 1, 546 "def" ) ) != NULL ) 547 { 548 FT_String* s; 549 550 551 for ( s = start_fstype + sizeof ( "/FSType" ) - 1; 552 s != start_def; 553 s++ ) 554 { 555 if ( *s >= '0' && *s <= '9' ) 556 { 557 if ( font_extra->fs_type >= ( FT_USHORT_MAX - 9 ) / 10 ) 558 { 559 /* Overflow - ignore the FSType value. */ 560 font_extra->fs_type = 0U; 561 break; 562 } 563 564 font_extra->fs_type *= 10; 565 font_extra->fs_type += (FT_UShort)( *s - '0' ); 566 } 567 else if ( *s != ' ' && *s != '\n' && *s != '\r' ) 568 { 569 /* Non-whitespace character between `/FSType' and next `def' */ 570 /* - ignore the FSType value. */ 571 font_extra->fs_type = 0U; 572 break; 573 } 574 } 575 } 576 } 577 578 cff->font_extra = font_extra; 579 } 580 581 if ( cff ) 582 *afont_extra = *cff->font_extra; 583 584 Fail: 585 return error; 586 } 587 588 589 FT_DEFINE_SERVICE_PSINFOREC( 590 cff_service_ps_info, 591 592 (PS_GetFontInfoFunc) cff_ps_get_font_info, /* ps_get_font_info */ 593 (PS_GetFontExtraFunc) cff_ps_get_font_extra, /* ps_get_font_extra */ 594 (PS_HasGlyphNamesFunc) cff_ps_has_glyph_names, /* ps_has_glyph_names */ 595 /* unsupported with CFF fonts */ 596 (PS_GetFontPrivateFunc)NULL, /* ps_get_font_private */ 597 /* not implemented */ 598 (PS_GetFontValueFunc) NULL /* ps_get_font_value */ 599 ) 600 601 602 /* 603 * POSTSCRIPT NAME SERVICE 604 * 605 */ 606 607 static const char* cff_get_ps_name(CFF_Face face)608 cff_get_ps_name( CFF_Face face ) 609 { 610 CFF_Font cff = (CFF_Font)face->extra.data; 611 SFNT_Service sfnt = (SFNT_Service)face->sfnt; 612 613 614 /* following the OpenType specification 1.7, we return the name stored */ 615 /* in the `name' table for a CFF wrapped into an SFNT container */ 616 617 if ( FT_IS_SFNT( FT_FACE( face ) ) && sfnt ) 618 { 619 FT_Library library = FT_FACE_LIBRARY( face ); 620 FT_Module sfnt_module = FT_Get_Module( library, "sfnt" ); 621 FT_Service_PsFontName service = 622 (FT_Service_PsFontName)ft_module_get_service( 623 sfnt_module, 624 FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, 625 0 ); 626 627 628 if ( service && service->get_ps_font_name ) 629 return service->get_ps_font_name( FT_FACE( face ) ); 630 } 631 632 return (const char*)cff->font_name; 633 } 634 635 636 FT_DEFINE_SERVICE_PSFONTNAMEREC( 637 cff_service_ps_name, 638 639 (FT_PsName_GetFunc)cff_get_ps_name /* get_ps_font_name */ 640 ) 641 642 643 /* 644 * TT CMAP INFO 645 * 646 * If the charmap is a synthetic Unicode encoding cmap or 647 * a Type 1 standard (or expert) encoding cmap, hide TT CMAP INFO 648 * service defined in SFNT module. 649 * 650 * Otherwise call the service function in the sfnt module. 651 * 652 */ 653 static FT_Error cff_get_cmap_info(FT_CharMap charmap,TT_CMapInfo * cmap_info)654 cff_get_cmap_info( FT_CharMap charmap, 655 TT_CMapInfo *cmap_info ) 656 { 657 FT_CMap cmap = FT_CMAP( charmap ); 658 FT_Error error = FT_Err_Ok; 659 660 FT_Face face = FT_CMAP_FACE( cmap ); 661 FT_Library library = FT_FACE_LIBRARY( face ); 662 663 664 if ( cmap->clazz != &cff_cmap_encoding_class_rec && 665 cmap->clazz != &cff_cmap_unicode_class_rec ) 666 { 667 FT_Module sfnt = FT_Get_Module( library, "sfnt" ); 668 FT_Service_TTCMaps service = 669 (FT_Service_TTCMaps)ft_module_get_service( sfnt, 670 FT_SERVICE_ID_TT_CMAP, 671 0 ); 672 673 674 if ( service && service->get_cmap_info ) 675 error = service->get_cmap_info( charmap, cmap_info ); 676 } 677 else 678 error = FT_THROW( Invalid_CharMap_Format ); 679 680 return error; 681 } 682 683 684 FT_DEFINE_SERVICE_TTCMAPSREC( 685 cff_service_get_cmap_info, 686 687 (TT_CMap_Info_GetFunc)cff_get_cmap_info /* get_cmap_info */ 688 ) 689 690 691 /* 692 * CID INFO SERVICE 693 * 694 */ 695 static FT_Error cff_get_ros(CFF_Face face,const char ** registry,const char ** ordering,FT_Int * supplement)696 cff_get_ros( CFF_Face face, 697 const char* *registry, 698 const char* *ordering, 699 FT_Int *supplement ) 700 { 701 FT_Error error = FT_Err_Ok; 702 CFF_Font cff = (CFF_Font)face->extra.data; 703 704 705 if ( cff ) 706 { 707 CFF_FontRecDict dict = &cff->top_font.font_dict; 708 709 710 if ( dict->cid_registry == 0xFFFFU ) 711 { 712 error = FT_THROW( Invalid_Argument ); 713 goto Fail; 714 } 715 716 if ( registry ) 717 { 718 if ( !cff->registry ) 719 cff->registry = cff_index_get_sid_string( cff, 720 dict->cid_registry ); 721 *registry = cff->registry; 722 } 723 724 if ( ordering ) 725 { 726 if ( !cff->ordering ) 727 cff->ordering = cff_index_get_sid_string( cff, 728 dict->cid_ordering ); 729 *ordering = cff->ordering; 730 } 731 732 /* 733 * XXX: According to Adobe TechNote #5176, the supplement in CFF 734 * can be a real number. We truncate it to fit public API 735 * since freetype-2.3.6. 736 */ 737 if ( supplement ) 738 { 739 if ( dict->cid_supplement < FT_INT_MIN || 740 dict->cid_supplement > FT_INT_MAX ) 741 FT_TRACE1(( "cff_get_ros: too large supplement %d is truncated\n", 742 dict->cid_supplement )); 743 *supplement = (FT_Int)dict->cid_supplement; 744 } 745 } 746 747 Fail: 748 return error; 749 } 750 751 752 static FT_Error cff_get_is_cid(CFF_Face face,FT_Bool * is_cid)753 cff_get_is_cid( CFF_Face face, 754 FT_Bool *is_cid ) 755 { 756 FT_Error error = FT_Err_Ok; 757 CFF_Font cff = (CFF_Font)face->extra.data; 758 759 760 *is_cid = 0; 761 762 if ( cff ) 763 { 764 CFF_FontRecDict dict = &cff->top_font.font_dict; 765 766 767 if ( dict->cid_registry != 0xFFFFU ) 768 *is_cid = 1; 769 } 770 771 return error; 772 } 773 774 775 static FT_Error cff_get_cid_from_glyph_index(CFF_Face face,FT_UInt glyph_index,FT_UInt * cid)776 cff_get_cid_from_glyph_index( CFF_Face face, 777 FT_UInt glyph_index, 778 FT_UInt *cid ) 779 { 780 FT_Error error = FT_Err_Ok; 781 CFF_Font cff; 782 783 784 cff = (CFF_Font)face->extra.data; 785 786 if ( cff ) 787 { 788 FT_UInt c; 789 CFF_FontRecDict dict = &cff->top_font.font_dict; 790 791 792 if ( dict->cid_registry == 0xFFFFU ) 793 { 794 error = FT_THROW( Invalid_Argument ); 795 goto Fail; 796 } 797 798 if ( glyph_index >= cff->num_glyphs ) 799 { 800 error = FT_THROW( Invalid_Argument ); 801 goto Fail; 802 } 803 804 c = cff->charset.sids[glyph_index]; 805 806 if ( cid ) 807 *cid = c; 808 } 809 810 Fail: 811 return error; 812 } 813 814 815 FT_DEFINE_SERVICE_CIDREC( 816 cff_service_cid_info, 817 818 (FT_CID_GetRegistryOrderingSupplementFunc) 819 cff_get_ros, /* get_ros */ 820 (FT_CID_GetIsInternallyCIDKeyedFunc) 821 cff_get_is_cid, /* get_is_cid */ 822 (FT_CID_GetCIDFromGlyphIndexFunc) 823 cff_get_cid_from_glyph_index /* get_cid_from_glyph_index */ 824 ) 825 826 827 /* 828 * PROPERTY SERVICE 829 * 830 */ 831 832 FT_DEFINE_SERVICE_PROPERTIESREC( 833 cff_service_properties, 834 835 (FT_Properties_SetFunc)ps_property_set, /* set_property */ 836 (FT_Properties_GetFunc)ps_property_get ) /* get_property */ 837 838 839 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT 840 841 /* 842 * MULTIPLE MASTER SERVICE 843 * 844 */ 845 846 static FT_Error cff_set_mm_blend(CFF_Face face,FT_UInt num_coords,FT_Fixed * coords)847 cff_set_mm_blend( CFF_Face face, 848 FT_UInt num_coords, 849 FT_Fixed* coords ) 850 { 851 FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; 852 853 854 return mm->set_mm_blend( FT_FACE( face ), num_coords, coords ); 855 } 856 857 858 static FT_Error cff_get_mm_blend(CFF_Face face,FT_UInt num_coords,FT_Fixed * coords)859 cff_get_mm_blend( CFF_Face face, 860 FT_UInt num_coords, 861 FT_Fixed* coords ) 862 { 863 FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; 864 865 866 return mm->get_mm_blend( FT_FACE( face ), num_coords, coords ); 867 } 868 869 870 static FT_Error cff_set_mm_weightvector(CFF_Face face,FT_UInt len,FT_Fixed * weightvector)871 cff_set_mm_weightvector( CFF_Face face, 872 FT_UInt len, 873 FT_Fixed* weightvector ) 874 { 875 FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; 876 877 878 return mm->set_mm_weightvector( FT_FACE( face ), len, weightvector ); 879 } 880 881 882 static FT_Error cff_get_mm_weightvector(CFF_Face face,FT_UInt * len,FT_Fixed * weightvector)883 cff_get_mm_weightvector( CFF_Face face, 884 FT_UInt* len, 885 FT_Fixed* weightvector ) 886 { 887 FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; 888 889 890 return mm->get_mm_weightvector( FT_FACE( face ), len, weightvector ); 891 } 892 893 894 static FT_Error cff_get_mm_var(CFF_Face face,FT_MM_Var ** master)895 cff_get_mm_var( CFF_Face face, 896 FT_MM_Var* *master ) 897 { 898 FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; 899 900 901 return mm->get_mm_var( FT_FACE( face ), master ); 902 } 903 904 905 static FT_Error cff_set_var_design(CFF_Face face,FT_UInt num_coords,FT_Fixed * coords)906 cff_set_var_design( CFF_Face face, 907 FT_UInt num_coords, 908 FT_Fixed* coords ) 909 { 910 FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; 911 912 913 return mm->set_var_design( FT_FACE( face ), num_coords, coords ); 914 } 915 916 917 static FT_Error cff_get_var_design(CFF_Face face,FT_UInt num_coords,FT_Fixed * coords)918 cff_get_var_design( CFF_Face face, 919 FT_UInt num_coords, 920 FT_Fixed* coords ) 921 { 922 FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; 923 924 925 return mm->get_var_design( FT_FACE( face ), num_coords, coords ); 926 } 927 928 929 static FT_Error cff_set_instance(CFF_Face face,FT_UInt instance_index)930 cff_set_instance( CFF_Face face, 931 FT_UInt instance_index ) 932 { 933 FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; 934 935 936 return mm->set_instance( FT_FACE( face ), instance_index ); 937 } 938 939 940 FT_DEFINE_SERVICE_MULTIMASTERSREC( 941 cff_service_multi_masters, 942 943 (FT_Get_MM_Func) NULL, /* get_mm */ 944 (FT_Set_MM_Design_Func) NULL, /* set_mm_design */ 945 (FT_Set_MM_Blend_Func) cff_set_mm_blend, /* set_mm_blend */ 946 (FT_Get_MM_Blend_Func) cff_get_mm_blend, /* get_mm_blend */ 947 (FT_Get_MM_Var_Func) cff_get_mm_var, /* get_mm_var */ 948 (FT_Set_Var_Design_Func) cff_set_var_design, /* set_var_design */ 949 (FT_Get_Var_Design_Func) cff_get_var_design, /* get_var_design */ 950 (FT_Set_Instance_Func) cff_set_instance, /* set_instance */ 951 (FT_Set_MM_WeightVector_Func)cff_set_mm_weightvector, /* set_mm_weightvector */ 952 (FT_Get_MM_WeightVector_Func)cff_get_mm_weightvector, /* get_mm_weightvector */ 953 954 (FT_Get_Var_Blend_Func) cff_get_var_blend, /* get_var_blend */ 955 (FT_Done_Blend_Func) cff_done_blend /* done_blend */ 956 ) 957 958 959 /* 960 * METRICS VARIATIONS SERVICE 961 * 962 */ 963 964 static FT_Error cff_hadvance_adjust(CFF_Face face,FT_UInt gindex,FT_Int * avalue)965 cff_hadvance_adjust( CFF_Face face, 966 FT_UInt gindex, 967 FT_Int *avalue ) 968 { 969 FT_Service_MetricsVariations var = (FT_Service_MetricsVariations)face->var; 970 971 972 return var->hadvance_adjust( FT_FACE( face ), gindex, avalue ); 973 } 974 975 976 static void cff_metrics_adjust(CFF_Face face)977 cff_metrics_adjust( CFF_Face face ) 978 { 979 FT_Service_MetricsVariations var = (FT_Service_MetricsVariations)face->var; 980 981 982 var->metrics_adjust( FT_FACE( face ) ); 983 } 984 985 986 FT_DEFINE_SERVICE_METRICSVARIATIONSREC( 987 cff_service_metrics_variations, 988 989 (FT_HAdvance_Adjust_Func)cff_hadvance_adjust, /* hadvance_adjust */ 990 (FT_LSB_Adjust_Func) NULL, /* lsb_adjust */ 991 (FT_RSB_Adjust_Func) NULL, /* rsb_adjust */ 992 993 (FT_VAdvance_Adjust_Func)NULL, /* vadvance_adjust */ 994 (FT_TSB_Adjust_Func) NULL, /* tsb_adjust */ 995 (FT_BSB_Adjust_Func) NULL, /* bsb_adjust */ 996 (FT_VOrg_Adjust_Func) NULL, /* vorg_adjust */ 997 998 (FT_Metrics_Adjust_Func) cff_metrics_adjust /* metrics_adjust */ 999 ) 1000 #endif 1001 1002 1003 /* 1004 * CFFLOAD SERVICE 1005 * 1006 */ 1007 1008 FT_DEFINE_SERVICE_CFFLOADREC( 1009 cff_service_cff_load, 1010 1011 (FT_Get_Standard_Encoding_Func)cff_get_standard_encoding, 1012 (FT_Load_Private_Dict_Func) cff_load_private_dict, 1013 (FT_FD_Select_Get_Func) cff_fd_select_get, 1014 (FT_Blend_Check_Vector_Func) cff_blend_check_vector, 1015 (FT_Blend_Build_Vector_Func) cff_blend_build_vector 1016 ) 1017 1018 1019 /*************************************************************************/ 1020 /*************************************************************************/ 1021 /*************************************************************************/ 1022 /**** ****/ 1023 /**** ****/ 1024 /**** D R I V E R I N T E R F A C E ****/ 1025 /**** ****/ 1026 /**** ****/ 1027 /*************************************************************************/ 1028 /*************************************************************************/ 1029 /*************************************************************************/ 1030 1031 #if !defined FT_CONFIG_OPTION_NO_GLYPH_NAMES && \ 1032 defined TT_CONFIG_OPTION_GX_VAR_SUPPORT 1033 FT_DEFINE_SERVICEDESCREC10( 1034 cff_services, 1035 1036 FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF, 1037 FT_SERVICE_ID_MULTI_MASTERS, &cff_service_multi_masters, 1038 FT_SERVICE_ID_METRICS_VARIATIONS, &cff_service_metrics_variations, 1039 FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info, 1040 FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name, 1041 FT_SERVICE_ID_GLYPH_DICT, &cff_service_glyph_dict, 1042 FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info, 1043 FT_SERVICE_ID_CID, &cff_service_cid_info, 1044 FT_SERVICE_ID_PROPERTIES, &cff_service_properties, 1045 FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load 1046 ) 1047 #elif !defined FT_CONFIG_OPTION_NO_GLYPH_NAMES 1048 FT_DEFINE_SERVICEDESCREC8( 1049 cff_services, 1050 1051 FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF, 1052 FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info, 1053 FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name, 1054 FT_SERVICE_ID_GLYPH_DICT, &cff_service_glyph_dict, 1055 FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info, 1056 FT_SERVICE_ID_CID, &cff_service_cid_info, 1057 FT_SERVICE_ID_PROPERTIES, &cff_service_properties, 1058 FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load 1059 ) 1060 #elif defined TT_CONFIG_OPTION_GX_VAR_SUPPORT 1061 FT_DEFINE_SERVICEDESCREC9( 1062 cff_services, 1063 1064 FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF, 1065 FT_SERVICE_ID_MULTI_MASTERS, &cff_service_multi_masters, 1066 FT_SERVICE_ID_METRICS_VARIATIONS, &cff_service_metrics_var, 1067 FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info, 1068 FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name, 1069 FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info, 1070 FT_SERVICE_ID_CID, &cff_service_cid_info, 1071 FT_SERVICE_ID_PROPERTIES, &cff_service_properties, 1072 FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load 1073 ) 1074 #else 1075 FT_DEFINE_SERVICEDESCREC7( 1076 cff_services, 1077 1078 FT_SERVICE_ID_FONT_FORMAT, FT_FONT_FORMAT_CFF, 1079 FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info, 1080 FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &cff_service_ps_name, 1081 FT_SERVICE_ID_TT_CMAP, &cff_service_get_cmap_info, 1082 FT_SERVICE_ID_CID, &cff_service_cid_info, 1083 FT_SERVICE_ID_PROPERTIES, &cff_service_properties, 1084 FT_SERVICE_ID_CFF_LOAD, &cff_service_cff_load 1085 ) 1086 #endif 1087 1088 FT_CALLBACK_DEF(FT_Module_Interface)1089 FT_CALLBACK_DEF( FT_Module_Interface ) 1090 cff_get_interface( FT_Module driver, /* CFF_Driver */ 1091 const char* module_interface ) 1092 { 1093 FT_Library library; 1094 FT_Module sfnt; 1095 FT_Module_Interface result; 1096 1097 1098 result = ft_service_list_lookup( cff_services, module_interface ); 1099 if ( result ) 1100 return result; 1101 1102 /* `driver' is not yet evaluated */ 1103 if ( !driver ) 1104 return NULL; 1105 library = driver->library; 1106 if ( !library ) 1107 return NULL; 1108 1109 /* we pass our request to the `sfnt' module */ 1110 sfnt = FT_Get_Module( library, "sfnt" ); 1111 1112 return sfnt ? sfnt->clazz->get_interface( sfnt, module_interface ) : 0; 1113 } 1114 1115 1116 /* The FT_DriverInterface structure is defined in ftdriver.h. */ 1117 1118 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 1119 #define CFF_SIZE_SELECT cff_size_select 1120 #else 1121 #define CFF_SIZE_SELECT 0 1122 #endif 1123 1124 FT_DEFINE_DRIVER( 1125 cff_driver_class, 1126 1127 FT_MODULE_FONT_DRIVER | 1128 FT_MODULE_DRIVER_SCALABLE | 1129 FT_MODULE_DRIVER_HAS_HINTER | 1130 FT_MODULE_DRIVER_HINTS_LIGHTLY, 1131 1132 sizeof ( PS_DriverRec ), 1133 "cff", 1134 0x10000L, 1135 0x20000L, 1136 1137 NULL, /* module-specific interface */ 1138 1139 cff_driver_init, /* FT_Module_Constructor module_init */ 1140 cff_driver_done, /* FT_Module_Destructor module_done */ 1141 cff_get_interface, /* FT_Module_Requester get_interface */ 1142 1143 sizeof ( TT_FaceRec ), 1144 sizeof ( CFF_SizeRec ), 1145 sizeof ( CFF_GlyphSlotRec ), 1146 1147 cff_face_init, /* FT_Face_InitFunc init_face */ 1148 cff_face_done, /* FT_Face_DoneFunc done_face */ 1149 cff_size_init, /* FT_Size_InitFunc init_size */ 1150 cff_size_done, /* FT_Size_DoneFunc done_size */ 1151 cff_slot_init, /* FT_Slot_InitFunc init_slot */ 1152 cff_slot_done, /* FT_Slot_DoneFunc done_slot */ 1153 1154 cff_glyph_load, /* FT_Slot_LoadFunc load_glyph */ 1155 1156 cff_get_kerning, /* FT_Face_GetKerningFunc get_kerning */ 1157 NULL, /* FT_Face_AttachFunc attach_file */ 1158 cff_get_advances, /* FT_Face_GetAdvancesFunc get_advances */ 1159 1160 cff_size_request, /* FT_Size_RequestFunc request_size */ 1161 CFF_SIZE_SELECT /* FT_Size_SelectFunc select_size */ 1162 ) 1163 1164 1165 /* END */ 1166