1 /**************************************************************************** 2 * 3 * cffobjs.c 4 * 5 * OpenType objects manager (body). 6 * 7 * Copyright (C) 1996-2020 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 20 #include <freetype/internal/ftdebug.h> 21 #include <freetype/internal/ftcalc.h> 22 #include <freetype/internal/ftstream.h> 23 #include <freetype/fterrors.h> 24 #include <freetype/ttnameid.h> 25 #include <freetype/tttags.h> 26 #include <freetype/internal/sfnt.h> 27 #include <freetype/ftdriver.h> 28 29 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT 30 #include <freetype/ftmm.h> 31 #include <freetype/internal/services/svmm.h> 32 #include <freetype/internal/services/svmetric.h> 33 #endif 34 35 #include <freetype/internal/cffotypes.h> 36 #include "cffobjs.h" 37 #include "cffload.h" 38 #include "cffcmap.h" 39 40 #include "cfferrs.h" 41 42 #include <freetype/internal/psaux.h> 43 #include <freetype/internal/services/svcfftl.h> 44 45 46 /************************************************************************** 47 * 48 * The macro FT_COMPONENT is used in trace mode. It is an implicit 49 * parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log 50 * messages during execution. 51 */ 52 #undef FT_COMPONENT 53 #define FT_COMPONENT cffobjs 54 55 56 /************************************************************************** 57 * 58 * SIZE FUNCTIONS 59 * 60 */ 61 62 63 static PSH_Globals_Funcs cff_size_get_globals_funcs(CFF_Size size)64 cff_size_get_globals_funcs( CFF_Size size ) 65 { 66 CFF_Face face = (CFF_Face)size->root.face; 67 CFF_Font font = (CFF_Font)face->extra.data; 68 PSHinter_Service pshinter = font->pshinter; 69 FT_Module module; 70 71 72 module = FT_Get_Module( size->root.face->driver->root.library, 73 "pshinter" ); 74 return ( module && pshinter && pshinter->get_globals_funcs ) 75 ? pshinter->get_globals_funcs( module ) 76 : 0; 77 } 78 79 80 FT_LOCAL_DEF( void ) cff_size_done(FT_Size cffsize)81 cff_size_done( FT_Size cffsize ) /* CFF_Size */ 82 { 83 FT_Memory memory = cffsize->face->memory; 84 CFF_Size size = (CFF_Size)cffsize; 85 CFF_Face face = (CFF_Face)size->root.face; 86 CFF_Font font = (CFF_Font)face->extra.data; 87 CFF_Internal internal = (CFF_Internal)cffsize->internal->module_data; 88 89 90 if ( internal ) 91 { 92 PSH_Globals_Funcs funcs; 93 94 95 funcs = cff_size_get_globals_funcs( size ); 96 if ( funcs ) 97 { 98 FT_UInt i; 99 100 101 funcs->destroy( internal->topfont ); 102 103 for ( i = font->num_subfonts; i > 0; i-- ) 104 funcs->destroy( internal->subfonts[i - 1] ); 105 } 106 107 FT_FREE( internal ); 108 } 109 } 110 111 112 /* CFF and Type 1 private dictionaries have slightly different */ 113 /* structures; we need to synthesize a Type 1 dictionary on the fly */ 114 115 static void cff_make_private_dict(CFF_SubFont subfont,PS_Private priv)116 cff_make_private_dict( CFF_SubFont subfont, 117 PS_Private priv ) 118 { 119 CFF_Private cpriv = &subfont->private_dict; 120 FT_UInt n, count; 121 122 123 FT_ZERO( priv ); 124 125 count = priv->num_blue_values = cpriv->num_blue_values; 126 for ( n = 0; n < count; n++ ) 127 priv->blue_values[n] = (FT_Short)cpriv->blue_values[n]; 128 129 count = priv->num_other_blues = cpriv->num_other_blues; 130 for ( n = 0; n < count; n++ ) 131 priv->other_blues[n] = (FT_Short)cpriv->other_blues[n]; 132 133 count = priv->num_family_blues = cpriv->num_family_blues; 134 for ( n = 0; n < count; n++ ) 135 priv->family_blues[n] = (FT_Short)cpriv->family_blues[n]; 136 137 count = priv->num_family_other_blues = cpriv->num_family_other_blues; 138 for ( n = 0; n < count; n++ ) 139 priv->family_other_blues[n] = (FT_Short)cpriv->family_other_blues[n]; 140 141 priv->blue_scale = cpriv->blue_scale; 142 priv->blue_shift = (FT_Int)cpriv->blue_shift; 143 priv->blue_fuzz = (FT_Int)cpriv->blue_fuzz; 144 145 priv->standard_width[0] = (FT_UShort)cpriv->standard_width; 146 priv->standard_height[0] = (FT_UShort)cpriv->standard_height; 147 148 count = priv->num_snap_widths = cpriv->num_snap_widths; 149 for ( n = 0; n < count; n++ ) 150 priv->snap_widths[n] = (FT_Short)cpriv->snap_widths[n]; 151 152 count = priv->num_snap_heights = cpriv->num_snap_heights; 153 for ( n = 0; n < count; n++ ) 154 priv->snap_heights[n] = (FT_Short)cpriv->snap_heights[n]; 155 156 priv->force_bold = cpriv->force_bold; 157 priv->language_group = cpriv->language_group; 158 priv->lenIV = cpriv->lenIV; 159 } 160 161 162 FT_LOCAL_DEF( FT_Error ) cff_size_init(FT_Size cffsize)163 cff_size_init( FT_Size cffsize ) /* CFF_Size */ 164 { 165 CFF_Size size = (CFF_Size)cffsize; 166 FT_Error error = FT_Err_Ok; 167 PSH_Globals_Funcs funcs = cff_size_get_globals_funcs( size ); 168 169 FT_Memory memory = cffsize->face->memory; 170 CFF_Internal internal = NULL; 171 CFF_Face face = (CFF_Face)cffsize->face; 172 CFF_Font font = (CFF_Font)face->extra.data; 173 174 PS_PrivateRec priv; 175 176 FT_UInt i; 177 178 if ( !funcs ) 179 goto Exit; 180 181 if ( FT_NEW( internal ) ) 182 goto Exit; 183 184 cff_make_private_dict( &font->top_font, &priv ); 185 error = funcs->create( cffsize->face->memory, &priv, 186 &internal->topfont ); 187 if ( error ) 188 goto Exit; 189 190 for ( i = font->num_subfonts; i > 0; i-- ) 191 { 192 CFF_SubFont sub = font->subfonts[i - 1]; 193 194 195 cff_make_private_dict( sub, &priv ); 196 error = funcs->create( cffsize->face->memory, &priv, 197 &internal->subfonts[i - 1] ); 198 if ( error ) 199 goto Exit; 200 } 201 202 cffsize->internal->module_data = internal; 203 204 size->strike_index = 0xFFFFFFFFUL; 205 206 Exit: 207 if ( error ) 208 { 209 if ( internal ) 210 { 211 for ( i = font->num_subfonts; i > 0; i-- ) 212 FT_FREE( internal->subfonts[i - 1] ); 213 FT_FREE( internal->topfont ); 214 } 215 216 FT_FREE( internal ); 217 } 218 219 return error; 220 } 221 222 223 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 224 225 FT_LOCAL_DEF( FT_Error ) cff_size_select(FT_Size size,FT_ULong strike_index)226 cff_size_select( FT_Size size, 227 FT_ULong strike_index ) 228 { 229 CFF_Size cffsize = (CFF_Size)size; 230 PSH_Globals_Funcs funcs; 231 232 233 cffsize->strike_index = strike_index; 234 235 FT_Select_Metrics( size->face, strike_index ); 236 237 funcs = cff_size_get_globals_funcs( cffsize ); 238 239 if ( funcs ) 240 { 241 CFF_Face face = (CFF_Face)size->face; 242 CFF_Font font = (CFF_Font)face->extra.data; 243 CFF_Internal internal = (CFF_Internal)size->internal->module_data; 244 245 FT_Long top_upm = (FT_Long)font->top_font.font_dict.units_per_em; 246 FT_UInt i; 247 248 249 funcs->set_scale( internal->topfont, 250 size->metrics.x_scale, size->metrics.y_scale, 251 0, 0 ); 252 253 for ( i = font->num_subfonts; i > 0; i-- ) 254 { 255 CFF_SubFont sub = font->subfonts[i - 1]; 256 FT_Long sub_upm = (FT_Long)sub->font_dict.units_per_em; 257 FT_Pos x_scale, y_scale; 258 259 260 if ( top_upm != sub_upm ) 261 { 262 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); 263 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); 264 } 265 else 266 { 267 x_scale = size->metrics.x_scale; 268 y_scale = size->metrics.y_scale; 269 } 270 271 funcs->set_scale( internal->subfonts[i - 1], 272 x_scale, y_scale, 0, 0 ); 273 } 274 } 275 276 return FT_Err_Ok; 277 } 278 279 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ 280 281 282 FT_LOCAL_DEF( FT_Error ) cff_size_request(FT_Size size,FT_Size_Request req)283 cff_size_request( FT_Size size, 284 FT_Size_Request req ) 285 { 286 CFF_Size cffsize = (CFF_Size)size; 287 PSH_Globals_Funcs funcs; 288 289 290 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 291 292 if ( FT_HAS_FIXED_SIZES( size->face ) ) 293 { 294 CFF_Face cffface = (CFF_Face)size->face; 295 SFNT_Service sfnt = (SFNT_Service)cffface->sfnt; 296 FT_ULong strike_index; 297 298 299 if ( sfnt->set_sbit_strike( cffface, req, &strike_index ) ) 300 cffsize->strike_index = 0xFFFFFFFFUL; 301 else 302 return cff_size_select( size, strike_index ); 303 } 304 305 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ 306 307 FT_Request_Metrics( size->face, req ); 308 309 funcs = cff_size_get_globals_funcs( cffsize ); 310 311 if ( funcs ) 312 { 313 CFF_Face cffface = (CFF_Face)size->face; 314 CFF_Font font = (CFF_Font)cffface->extra.data; 315 CFF_Internal internal = (CFF_Internal)size->internal->module_data; 316 317 FT_Long top_upm = (FT_Long)font->top_font.font_dict.units_per_em; 318 FT_UInt i; 319 320 321 funcs->set_scale( internal->topfont, 322 size->metrics.x_scale, size->metrics.y_scale, 323 0, 0 ); 324 325 for ( i = font->num_subfonts; i > 0; i-- ) 326 { 327 CFF_SubFont sub = font->subfonts[i - 1]; 328 FT_Long sub_upm = (FT_Long)sub->font_dict.units_per_em; 329 FT_Pos x_scale, y_scale; 330 331 332 if ( top_upm != sub_upm ) 333 { 334 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); 335 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); 336 } 337 else 338 { 339 x_scale = size->metrics.x_scale; 340 y_scale = size->metrics.y_scale; 341 } 342 343 funcs->set_scale( internal->subfonts[i - 1], 344 x_scale, y_scale, 0, 0 ); 345 } 346 } 347 348 return FT_Err_Ok; 349 } 350 351 352 /************************************************************************** 353 * 354 * SLOT FUNCTIONS 355 * 356 */ 357 358 FT_LOCAL_DEF( void ) cff_slot_done(FT_GlyphSlot slot)359 cff_slot_done( FT_GlyphSlot slot ) 360 { 361 if ( slot->internal ) 362 slot->internal->glyph_hints = NULL; 363 } 364 365 366 FT_LOCAL_DEF( FT_Error ) cff_slot_init(FT_GlyphSlot slot)367 cff_slot_init( FT_GlyphSlot slot ) 368 { 369 CFF_Face face = (CFF_Face)slot->face; 370 CFF_Font font = (CFF_Font)face->extra.data; 371 PSHinter_Service pshinter = font->pshinter; 372 373 374 if ( pshinter ) 375 { 376 FT_Module module; 377 378 379 module = FT_Get_Module( slot->face->driver->root.library, 380 "pshinter" ); 381 if ( module ) 382 { 383 T2_Hints_Funcs funcs; 384 385 386 funcs = pshinter->get_t2_funcs( module ); 387 slot->internal->glyph_hints = (void*)funcs; 388 } 389 } 390 391 return FT_Err_Ok; 392 } 393 394 395 /************************************************************************** 396 * 397 * FACE FUNCTIONS 398 * 399 */ 400 401 static FT_String* cff_strcpy(FT_Memory memory,const FT_String * source)402 cff_strcpy( FT_Memory memory, 403 const FT_String* source ) 404 { 405 FT_Error error; 406 FT_String* result; 407 408 409 (void)FT_STRDUP( result, source ); 410 411 FT_UNUSED( error ); 412 413 return result; 414 } 415 416 417 /* Strip all subset prefixes of the form `ABCDEF+'. Usually, there */ 418 /* is only one, but font names like `APCOOG+JFABTD+FuturaBQ-Bold' */ 419 /* have been seen in the wild. */ 420 421 static void remove_subset_prefix(FT_String * name)422 remove_subset_prefix( FT_String* name ) 423 { 424 FT_Int32 idx = 0; 425 FT_Int32 length = (FT_Int32)ft_strlen( name ) + 1; 426 FT_Bool continue_search = 1; 427 428 429 while ( continue_search ) 430 { 431 if ( length >= 7 && name[6] == '+' ) 432 { 433 for ( idx = 0; idx < 6; idx++ ) 434 { 435 /* ASCII uppercase letters */ 436 if ( !( 'A' <= name[idx] && name[idx] <= 'Z' ) ) 437 continue_search = 0; 438 } 439 440 if ( continue_search ) 441 { 442 for ( idx = 7; idx < length; idx++ ) 443 name[idx - 7] = name[idx]; 444 length -= 7; 445 } 446 } 447 else 448 continue_search = 0; 449 } 450 } 451 452 453 /* Remove the style part from the family name (if present). */ 454 455 static void remove_style(FT_String * family_name,const FT_String * style_name)456 remove_style( FT_String* family_name, 457 const FT_String* style_name ) 458 { 459 FT_Int32 family_name_length, style_name_length; 460 461 462 family_name_length = (FT_Int32)ft_strlen( family_name ); 463 style_name_length = (FT_Int32)ft_strlen( style_name ); 464 465 if ( family_name_length > style_name_length ) 466 { 467 FT_Int idx; 468 469 470 for ( idx = 1; idx <= style_name_length; idx++ ) 471 { 472 if ( family_name[family_name_length - idx] != 473 style_name[style_name_length - idx] ) 474 break; 475 } 476 477 if ( idx > style_name_length ) 478 { 479 /* family_name ends with style_name; remove it */ 480 idx = family_name_length - style_name_length - 1; 481 482 /* also remove special characters */ 483 /* between real family name and style */ 484 while ( idx > 0 && 485 ( family_name[idx] == '-' || 486 family_name[idx] == ' ' || 487 family_name[idx] == '_' || 488 family_name[idx] == '+' ) ) 489 idx--; 490 491 if ( idx > 0 ) 492 family_name[idx + 1] = '\0'; 493 } 494 } 495 } 496 497 498 FT_LOCAL_DEF( FT_Error ) cff_face_init(FT_Stream stream,FT_Face cffface,FT_Int face_index,FT_Int num_params,FT_Parameter * params)499 cff_face_init( FT_Stream stream, 500 FT_Face cffface, /* CFF_Face */ 501 FT_Int face_index, 502 FT_Int num_params, 503 FT_Parameter* params ) 504 { 505 CFF_Face face = (CFF_Face)cffface; 506 FT_Error error; 507 SFNT_Service sfnt; 508 FT_Service_PsCMaps psnames; 509 PSHinter_Service pshinter; 510 PSAux_Service psaux; 511 FT_Service_CFFLoad cffload; 512 FT_Bool pure_cff = 1; 513 FT_Bool cff2 = 0; 514 FT_Bool sfnt_format = 0; 515 FT_Library library = cffface->driver->root.library; 516 517 518 sfnt = (SFNT_Service)FT_Get_Module_Interface( library, 519 "sfnt" ); 520 if ( !sfnt ) 521 { 522 FT_ERROR(( "cff_face_init: cannot access `sfnt' module\n" )); 523 error = FT_THROW( Missing_Module ); 524 goto Exit; 525 } 526 527 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); 528 529 pshinter = (PSHinter_Service)FT_Get_Module_Interface( library, 530 "pshinter" ); 531 532 psaux = (PSAux_Service)FT_Get_Module_Interface( library, 533 "psaux" ); 534 if ( !psaux ) 535 { 536 FT_ERROR(( "cff_face_init: cannot access `psaux' module\n" )); 537 error = FT_THROW( Missing_Module ); 538 goto Exit; 539 } 540 face->psaux = psaux; 541 542 FT_FACE_FIND_GLOBAL_SERVICE( face, cffload, CFF_LOAD ); 543 544 FT_TRACE2(( "CFF driver\n" )); 545 546 /* create input stream from resource */ 547 if ( FT_STREAM_SEEK( 0 ) ) 548 goto Exit; 549 550 /* check whether we have a valid OpenType file */ 551 FT_TRACE2(( " " )); 552 error = sfnt->init_face( stream, face, face_index, num_params, params ); 553 if ( !error ) 554 { 555 if ( face->format_tag != TTAG_OTTO ) /* `OTTO'; OpenType/CFF font */ 556 { 557 FT_TRACE2(( " not an OpenType/CFF font\n" )); 558 error = FT_THROW( Unknown_File_Format ); 559 goto Exit; 560 } 561 562 /* if we are performing a simple font format check, exit immediately */ 563 if ( face_index < 0 ) 564 return FT_Err_Ok; 565 566 sfnt_format = 1; 567 568 /* now, the font can be either an OpenType/CFF font, or an SVG CEF */ 569 /* font; in the latter case it doesn't have a `head' table */ 570 error = face->goto_table( face, TTAG_head, stream, 0 ); 571 if ( !error ) 572 { 573 pure_cff = 0; 574 575 /* load font directory */ 576 error = sfnt->load_face( stream, face, face_index, 577 num_params, params ); 578 if ( error ) 579 goto Exit; 580 } 581 else 582 { 583 /* load the `cmap' table explicitly */ 584 error = sfnt->load_cmap( face, stream ); 585 if ( error ) 586 goto Exit; 587 } 588 589 /* now load the CFF part of the file; */ 590 /* give priority to CFF2 */ 591 error = face->goto_table( face, TTAG_CFF2, stream, 0 ); 592 if ( !error ) 593 { 594 cff2 = 1; 595 face->is_cff2 = cff2; 596 } 597 598 if ( FT_ERR_EQ( error, Table_Missing ) ) 599 error = face->goto_table( face, TTAG_CFF, stream, 0 ); 600 601 if ( error ) 602 goto Exit; 603 } 604 else 605 { 606 /* rewind to start of file; we are going to load a pure-CFF font */ 607 if ( FT_STREAM_SEEK( 0 ) ) 608 goto Exit; 609 error = FT_Err_Ok; 610 } 611 612 /* now load and parse the CFF table in the file */ 613 { 614 CFF_Font cff = NULL; 615 CFF_FontRecDict dict; 616 FT_Memory memory = cffface->memory; 617 FT_Int32 flags; 618 FT_UInt i; 619 620 621 if ( FT_NEW( cff ) ) 622 goto Exit; 623 624 face->extra.data = cff; 625 error = cff_font_load( library, 626 stream, 627 face_index, 628 cff, 629 face, 630 pure_cff, 631 cff2 ); 632 if ( error ) 633 goto Exit; 634 635 /* if we are performing a simple font format check, exit immediately */ 636 /* (this is here for pure CFF) */ 637 if ( face_index < 0 ) 638 { 639 cffface->num_faces = (FT_Long)cff->num_faces; 640 return FT_Err_Ok; 641 } 642 643 cff->pshinter = pshinter; 644 cff->psnames = psnames; 645 cff->cffload = cffload; 646 647 cffface->face_index = face_index & 0xFFFF; 648 649 /* Complement the root flags with some interesting information. */ 650 /* Note that this is only necessary for pure CFF and CEF fonts; */ 651 /* SFNT based fonts use the `name' table instead. */ 652 653 cffface->num_glyphs = (FT_Long)cff->num_glyphs; 654 655 dict = &cff->top_font.font_dict; 656 657 /* we need the `psnames' module for CFF and CEF formats */ 658 /* which aren't CID-keyed */ 659 if ( dict->cid_registry == 0xFFFFU && !psnames ) 660 { 661 FT_ERROR(( "cff_face_init:" 662 " cannot open CFF & CEF fonts\n" 663 " " 664 " without the `psnames' module\n" )); 665 error = FT_THROW( Missing_Module ); 666 goto Exit; 667 } 668 669 #ifdef FT_DEBUG_LEVEL_TRACE 670 { 671 FT_UInt idx; 672 FT_String* s; 673 674 675 FT_TRACE4(( "SIDs\n" )); 676 677 /* dump string index, including default strings for convenience */ 678 for ( idx = 0; idx <= 390; idx++ ) 679 { 680 s = cff_index_get_sid_string( cff, idx ); 681 if ( s ) 682 FT_TRACE4(( " %5d %s\n", idx, s )); 683 } 684 685 /* In Multiple Master CFFs, two SIDs hold the Normalize Design */ 686 /* Vector (NDV) and Convert Design Vector (CDV) charstrings, */ 687 /* which may contain NULL bytes in the middle of the data, too. */ 688 /* We thus access `cff->strings' directly. */ 689 for ( idx = 1; idx < cff->num_strings; idx++ ) 690 { 691 FT_Byte* s1 = cff->strings[idx - 1]; 692 FT_Byte* s2 = cff->strings[idx]; 693 FT_PtrDist s1len = s2 - s1 - 1; /* without the final NULL byte */ 694 FT_PtrDist l; 695 696 697 FT_TRACE4(( " %5d ", idx + 390 )); 698 for ( l = 0; l < s1len; l++ ) 699 FT_TRACE4(( "%c", s1[l] )); 700 FT_TRACE4(( "\n" )); 701 } 702 703 /* print last element */ 704 if ( cff->num_strings ) 705 { 706 FT_Byte* s1 = cff->strings[cff->num_strings - 1]; 707 FT_Byte* s2 = cff->string_pool + cff->string_pool_size; 708 FT_PtrDist s1len = s2 - s1 - 1; 709 FT_PtrDist l; 710 711 712 FT_TRACE4(( " %5d ", cff->num_strings + 390 )); 713 for ( l = 0; l < s1len; l++ ) 714 FT_TRACE4(( "%c", s1[l] )); 715 FT_TRACE4(( "\n" )); 716 } 717 } 718 #endif /* FT_DEBUG_LEVEL_TRACE */ 719 720 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT 721 { 722 FT_Service_MultiMasters mm = (FT_Service_MultiMasters)face->mm; 723 FT_Service_MetricsVariations var = (FT_Service_MetricsVariations)face->var; 724 725 FT_UInt instance_index = (FT_UInt)face_index >> 16; 726 727 728 if ( FT_HAS_MULTIPLE_MASTERS( cffface ) && 729 mm && 730 instance_index > 0 ) 731 { 732 error = mm->set_instance( cffface, instance_index ); 733 if ( error ) 734 goto Exit; 735 736 if ( var ) 737 var->metrics_adjust( cffface ); 738 } 739 } 740 #endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */ 741 742 if ( !dict->has_font_matrix ) 743 dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM; 744 745 /* Normalize the font matrix so that `matrix->yy' is 1; if */ 746 /* it is zero, we use `matrix->yx' instead. The scaling is */ 747 /* done with `units_per_em' then (at this point, it already */ 748 /* contains the scaling factor, but without normalization */ 749 /* of the matrix). */ 750 /* */ 751 /* Note that the offsets must be expressed in integer font */ 752 /* units. */ 753 754 { 755 FT_Matrix* matrix = &dict->font_matrix; 756 FT_Vector* offset = &dict->font_offset; 757 FT_ULong* upm = &dict->units_per_em; 758 FT_Fixed temp; 759 760 761 temp = matrix->yy ? FT_ABS( matrix->yy ) 762 : FT_ABS( matrix->yx ); 763 764 if ( temp != 0x10000L ) 765 { 766 *upm = (FT_ULong)FT_DivFix( (FT_Long)*upm, temp ); 767 768 matrix->xx = FT_DivFix( matrix->xx, temp ); 769 matrix->yx = FT_DivFix( matrix->yx, temp ); 770 matrix->xy = FT_DivFix( matrix->xy, temp ); 771 matrix->yy = FT_DivFix( matrix->yy, temp ); 772 offset->x = FT_DivFix( offset->x, temp ); 773 offset->y = FT_DivFix( offset->y, temp ); 774 } 775 776 offset->x >>= 16; 777 offset->y >>= 16; 778 } 779 780 for ( i = cff->num_subfonts; i > 0; i-- ) 781 { 782 CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict; 783 CFF_FontRecDict top = &cff->top_font.font_dict; 784 785 FT_Matrix* matrix; 786 FT_Vector* offset; 787 FT_ULong* upm; 788 FT_Fixed temp; 789 790 791 if ( sub->has_font_matrix ) 792 { 793 FT_Long scaling; 794 795 796 /* if we have a top-level matrix, */ 797 /* concatenate the subfont matrix */ 798 799 if ( top->has_font_matrix ) 800 { 801 if ( top->units_per_em > 1 && sub->units_per_em > 1 ) 802 scaling = (FT_Long)FT_MIN( top->units_per_em, 803 sub->units_per_em ); 804 else 805 scaling = 1; 806 807 FT_Matrix_Multiply_Scaled( &top->font_matrix, 808 &sub->font_matrix, 809 scaling ); 810 FT_Vector_Transform_Scaled( &sub->font_offset, 811 &top->font_matrix, 812 scaling ); 813 814 sub->units_per_em = (FT_ULong) 815 FT_MulDiv( (FT_Long)sub->units_per_em, 816 (FT_Long)top->units_per_em, 817 scaling ); 818 } 819 } 820 else 821 { 822 sub->font_matrix = top->font_matrix; 823 sub->font_offset = top->font_offset; 824 825 sub->units_per_em = top->units_per_em; 826 } 827 828 matrix = &sub->font_matrix; 829 offset = &sub->font_offset; 830 upm = &sub->units_per_em; 831 832 temp = matrix->yy ? FT_ABS( matrix->yy ) 833 : FT_ABS( matrix->yx ); 834 835 836 if ( temp != 0x10000L ) 837 { 838 *upm = (FT_ULong)FT_DivFix( (FT_Long)*upm, temp ); 839 840 matrix->xx = FT_DivFix( matrix->xx, temp ); 841 matrix->yx = FT_DivFix( matrix->yx, temp ); 842 matrix->xy = FT_DivFix( matrix->xy, temp ); 843 matrix->yy = FT_DivFix( matrix->yy, temp ); 844 offset->x = FT_DivFix( offset->x, temp ); 845 offset->y = FT_DivFix( offset->y, temp ); 846 } 847 848 offset->x >>= 16; 849 offset->y >>= 16; 850 } 851 852 if ( pure_cff ) 853 { 854 char* style_name = NULL; 855 856 857 /* set up num_faces */ 858 cffface->num_faces = (FT_Long)cff->num_faces; 859 860 /* compute number of glyphs */ 861 if ( dict->cid_registry != 0xFFFFU ) 862 cffface->num_glyphs = (FT_Long)( cff->charset.max_cid + 1 ); 863 else 864 cffface->num_glyphs = (FT_Long)cff->charstrings_index.count; 865 866 /* set global bbox, as well as EM size */ 867 cffface->bbox.xMin = dict->font_bbox.xMin >> 16; 868 cffface->bbox.yMin = dict->font_bbox.yMin >> 16; 869 /* no `U' suffix here to 0xFFFF! */ 870 cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16; 871 cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16; 872 873 cffface->units_per_EM = (FT_UShort)( dict->units_per_em ); 874 875 cffface->ascender = (FT_Short)( cffface->bbox.yMax ); 876 cffface->descender = (FT_Short)( cffface->bbox.yMin ); 877 878 cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 ); 879 if ( cffface->height < cffface->ascender - cffface->descender ) 880 cffface->height = (FT_Short)( cffface->ascender - 881 cffface->descender ); 882 883 cffface->underline_position = 884 (FT_Short)( dict->underline_position >> 16 ); 885 cffface->underline_thickness = 886 (FT_Short)( dict->underline_thickness >> 16 ); 887 888 /* retrieve font family & style name */ 889 if ( dict->family_name ) 890 { 891 char* family_name; 892 893 894 family_name = cff_index_get_sid_string( cff, dict->family_name ); 895 if ( family_name ) 896 cffface->family_name = cff_strcpy( memory, family_name ); 897 } 898 899 if ( !cffface->family_name ) 900 { 901 cffface->family_name = cff_index_get_name( 902 cff, 903 (FT_UInt)( face_index & 0xFFFF ) ); 904 if ( cffface->family_name ) 905 remove_subset_prefix( cffface->family_name ); 906 } 907 908 if ( cffface->family_name ) 909 { 910 char* full = cff_index_get_sid_string( cff, 911 dict->full_name ); 912 char* fullp = full; 913 char* family = cffface->family_name; 914 915 916 /* We try to extract the style name from the full name. */ 917 /* We need to ignore spaces and dashes during the search. */ 918 if ( full && family ) 919 { 920 while ( *fullp ) 921 { 922 /* skip common characters at the start of both strings */ 923 if ( *fullp == *family ) 924 { 925 family++; 926 fullp++; 927 continue; 928 } 929 930 /* ignore spaces and dashes in full name during comparison */ 931 if ( *fullp == ' ' || *fullp == '-' ) 932 { 933 fullp++; 934 continue; 935 } 936 937 /* ignore spaces and dashes in family name during comparison */ 938 if ( *family == ' ' || *family == '-' ) 939 { 940 family++; 941 continue; 942 } 943 944 if ( !*family && *fullp ) 945 { 946 /* The full name begins with the same characters as the */ 947 /* family name, with spaces and dashes removed. In this */ 948 /* case, the remaining string in `fullp' will be used as */ 949 /* the style name. */ 950 style_name = cff_strcpy( memory, fullp ); 951 952 /* remove the style part from the family name (if present) */ 953 if ( style_name ) 954 remove_style( cffface->family_name, style_name ); 955 } 956 break; 957 } 958 } 959 } 960 else 961 { 962 char *cid_font_name = 963 cff_index_get_sid_string( cff, 964 dict->cid_font_name ); 965 966 967 /* do we have a `/FontName' for a CID-keyed font? */ 968 if ( cid_font_name ) 969 cffface->family_name = cff_strcpy( memory, cid_font_name ); 970 } 971 972 if ( style_name ) 973 cffface->style_name = style_name; 974 else 975 /* assume "Regular" style if we don't know better */ 976 cffface->style_name = cff_strcpy( memory, "Regular" ); 977 978 /******************************************************************** 979 * 980 * Compute face flags. 981 */ 982 flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */ 983 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ 984 FT_FACE_FLAG_HINTER; /* has native hinter */ 985 986 if ( sfnt_format ) 987 flags |= FT_FACE_FLAG_SFNT; 988 989 /* fixed width font? */ 990 if ( dict->is_fixed_pitch ) 991 flags |= FT_FACE_FLAG_FIXED_WIDTH; 992 993 /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */ 994 #if 0 995 /* kerning available? */ 996 if ( face->kern_pairs ) 997 flags |= FT_FACE_FLAG_KERNING; 998 #endif 999 1000 cffface->face_flags |= flags; 1001 1002 /******************************************************************** 1003 * 1004 * Compute style flags. 1005 */ 1006 flags = 0; 1007 1008 if ( dict->italic_angle ) 1009 flags |= FT_STYLE_FLAG_ITALIC; 1010 1011 { 1012 char *weight = cff_index_get_sid_string( cff, 1013 dict->weight ); 1014 1015 1016 if ( weight ) 1017 if ( !ft_strcmp( weight, "Bold" ) || 1018 !ft_strcmp( weight, "Black" ) ) 1019 flags |= FT_STYLE_FLAG_BOLD; 1020 } 1021 1022 /* double check */ 1023 if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name ) 1024 if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) || 1025 !ft_strncmp( cffface->style_name, "Black", 5 ) ) 1026 flags |= FT_STYLE_FLAG_BOLD; 1027 1028 cffface->style_flags = flags; 1029 } 1030 1031 #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES 1032 /* CID-keyed CFF or CFF2 fonts don't have glyph names -- the SFNT */ 1033 /* loader has unset this flag because of the 3.0 `post' table. */ 1034 if ( dict->cid_registry == 0xFFFFU && !cff2 ) 1035 cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; 1036 #endif 1037 1038 if ( dict->cid_registry != 0xFFFFU && pure_cff ) 1039 cffface->face_flags |= FT_FACE_FLAG_CID_KEYED; 1040 1041 /******************************************************************** 1042 * 1043 * Compute char maps. 1044 */ 1045 1046 /* Try to synthesize a Unicode charmap if there is none available */ 1047 /* already. If an OpenType font contains a Unicode "cmap", we */ 1048 /* will use it, whatever be in the CFF part of the file. */ 1049 { 1050 FT_CharMapRec cmaprec; 1051 FT_CharMap cmap; 1052 FT_UInt nn; 1053 CFF_Encoding encoding = &cff->encoding; 1054 1055 1056 for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ ) 1057 { 1058 cmap = cffface->charmaps[nn]; 1059 1060 /* Windows Unicode? */ 1061 if ( cmap->platform_id == TT_PLATFORM_MICROSOFT && 1062 cmap->encoding_id == TT_MS_ID_UNICODE_CS ) 1063 goto Skip_Unicode; 1064 1065 /* Apple Unicode platform id? */ 1066 if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE ) 1067 goto Skip_Unicode; /* Apple Unicode */ 1068 } 1069 1070 /* since CID-keyed fonts don't contain glyph names, we can't */ 1071 /* construct a cmap */ 1072 if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU ) 1073 goto Exit; 1074 1075 /* we didn't find a Unicode charmap -- synthesize one */ 1076 cmaprec.face = cffface; 1077 cmaprec.platform_id = TT_PLATFORM_MICROSOFT; 1078 cmaprec.encoding_id = TT_MS_ID_UNICODE_CS; 1079 cmaprec.encoding = FT_ENCODING_UNICODE; 1080 1081 nn = (FT_UInt)cffface->num_charmaps; 1082 1083 error = FT_CMap_New( &cff_cmap_unicode_class_rec, NULL, 1084 &cmaprec, NULL ); 1085 if ( error && 1086 FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) && 1087 FT_ERR_NEQ( error, Unimplemented_Feature ) ) 1088 goto Exit; 1089 error = FT_Err_Ok; 1090 1091 /* if no Unicode charmap was previously selected, select this one */ 1092 if ( !cffface->charmap && nn != (FT_UInt)cffface->num_charmaps ) 1093 cffface->charmap = cffface->charmaps[nn]; 1094 1095 Skip_Unicode: 1096 if ( encoding->count > 0 ) 1097 { 1098 FT_CMap_Class clazz; 1099 1100 1101 cmaprec.face = cffface; 1102 cmaprec.platform_id = TT_PLATFORM_ADOBE; /* Adobe platform id */ 1103 1104 if ( encoding->offset == 0 ) 1105 { 1106 cmaprec.encoding_id = TT_ADOBE_ID_STANDARD; 1107 cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD; 1108 clazz = &cff_cmap_encoding_class_rec; 1109 } 1110 else if ( encoding->offset == 1 ) 1111 { 1112 cmaprec.encoding_id = TT_ADOBE_ID_EXPERT; 1113 cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT; 1114 clazz = &cff_cmap_encoding_class_rec; 1115 } 1116 else 1117 { 1118 cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM; 1119 cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM; 1120 clazz = &cff_cmap_encoding_class_rec; 1121 } 1122 1123 error = FT_CMap_New( clazz, NULL, &cmaprec, NULL ); 1124 } 1125 } 1126 } 1127 1128 Exit: 1129 return error; 1130 } 1131 1132 1133 FT_LOCAL_DEF( void ) cff_face_done(FT_Face cffface)1134 cff_face_done( FT_Face cffface ) /* CFF_Face */ 1135 { 1136 CFF_Face face = (CFF_Face)cffface; 1137 FT_Memory memory; 1138 SFNT_Service sfnt; 1139 1140 1141 if ( !face ) 1142 return; 1143 1144 memory = cffface->memory; 1145 sfnt = (SFNT_Service)face->sfnt; 1146 1147 if ( sfnt ) 1148 sfnt->done_face( face ); 1149 1150 { 1151 CFF_Font cff = (CFF_Font)face->extra.data; 1152 1153 1154 if ( cff ) 1155 { 1156 cff_font_done( cff ); 1157 FT_FREE( face->extra.data ); 1158 } 1159 } 1160 1161 #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT 1162 cff_done_blend( face ); 1163 face->blend = NULL; 1164 #endif 1165 } 1166 1167 1168 FT_LOCAL_DEF( FT_Error ) cff_driver_init(FT_Module module)1169 cff_driver_init( FT_Module module ) /* CFF_Driver */ 1170 { 1171 PS_Driver driver = (PS_Driver)module; 1172 1173 FT_UInt32 seed; 1174 1175 1176 /* set default property values, cf. `ftcffdrv.h' */ 1177 #ifdef CFF_CONFIG_OPTION_OLD_ENGINE 1178 driver->hinting_engine = FT_HINTING_FREETYPE; 1179 #else 1180 driver->hinting_engine = FT_HINTING_ADOBE; 1181 #endif 1182 1183 driver->no_stem_darkening = TRUE; 1184 1185 driver->darken_params[0] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1; 1186 driver->darken_params[1] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1; 1187 driver->darken_params[2] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2; 1188 driver->darken_params[3] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2; 1189 driver->darken_params[4] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3; 1190 driver->darken_params[5] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3; 1191 driver->darken_params[6] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4; 1192 driver->darken_params[7] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4; 1193 1194 /* compute random seed from some memory addresses */ 1195 seed = (FT_UInt32)( (FT_Offset)(char*)&seed ^ 1196 (FT_Offset)(char*)&module ^ 1197 (FT_Offset)(char*)module->memory ); 1198 seed = seed ^ ( seed >> 10 ) ^ ( seed >> 20 ); 1199 1200 driver->random_seed = (FT_Int32)seed; 1201 if ( driver->random_seed < 0 ) 1202 driver->random_seed = -driver->random_seed; 1203 else if ( driver->random_seed == 0 ) 1204 driver->random_seed = 123456789; 1205 1206 return FT_Err_Ok; 1207 } 1208 1209 1210 FT_LOCAL_DEF( void ) cff_driver_done(FT_Module module)1211 cff_driver_done( FT_Module module ) /* CFF_Driver */ 1212 { 1213 FT_UNUSED( module ); 1214 } 1215 1216 1217 /* END */ 1218