1 /***************************************************************************/ 2 /* */ 3 /* cffobjs.c */ 4 /* */ 5 /* OpenType objects manager (body). */ 6 /* */ 7 /* Copyright 1996-2016 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 21 #include FT_INTERNAL_DEBUG_H 22 #include FT_INTERNAL_CALC_H 23 #include FT_INTERNAL_STREAM_H 24 #include FT_ERRORS_H 25 #include FT_TRUETYPE_IDS_H 26 #include FT_TRUETYPE_TAGS_H 27 #include FT_INTERNAL_SFNT_H 28 #include FT_CFF_DRIVER_H 29 30 #include "cffobjs.h" 31 #include "cffload.h" 32 #include "cffcmap.h" 33 #include "cffpic.h" 34 35 #include "cfferrs.h" 36 37 38 /*************************************************************************/ 39 /* */ 40 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 41 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 42 /* messages during execution. */ 43 /* */ 44 #undef FT_COMPONENT 45 #define FT_COMPONENT trace_cffobjs 46 47 48 /*************************************************************************/ 49 /* */ 50 /* SIZE FUNCTIONS */ 51 /* */ 52 /* Note that we store the global hints in the size's `internal' root */ 53 /* field. */ 54 /* */ 55 /*************************************************************************/ 56 57 58 static PSH_Globals_Funcs cff_size_get_globals_funcs(CFF_Size size)59 cff_size_get_globals_funcs( CFF_Size size ) 60 { 61 CFF_Face face = (CFF_Face)size->root.face; 62 CFF_Font font = (CFF_Font)face->extra.data; 63 PSHinter_Service pshinter = font->pshinter; 64 FT_Module module; 65 66 67 module = FT_Get_Module( size->root.face->driver->root.library, 68 "pshinter" ); 69 return ( module && pshinter && pshinter->get_globals_funcs ) 70 ? pshinter->get_globals_funcs( module ) 71 : 0; 72 } 73 74 75 FT_LOCAL_DEF( void ) cff_size_done(FT_Size cffsize)76 cff_size_done( FT_Size cffsize ) /* CFF_Size */ 77 { 78 CFF_Size size = (CFF_Size)cffsize; 79 CFF_Face face = (CFF_Face)size->root.face; 80 CFF_Font font = (CFF_Font)face->extra.data; 81 CFF_Internal internal = (CFF_Internal)cffsize->internal; 82 83 84 if ( internal ) 85 { 86 PSH_Globals_Funcs funcs; 87 88 89 funcs = cff_size_get_globals_funcs( size ); 90 if ( funcs ) 91 { 92 FT_UInt i; 93 94 95 funcs->destroy( internal->topfont ); 96 97 for ( i = font->num_subfonts; i > 0; i-- ) 98 funcs->destroy( internal->subfonts[i - 1] ); 99 } 100 101 /* `internal' is freed by destroy_size (in ftobjs.c) */ 102 } 103 } 104 105 106 /* CFF and Type 1 private dictionaries have slightly different */ 107 /* structures; we need to synthesize a Type 1 dictionary on the fly */ 108 109 static void cff_make_private_dict(CFF_SubFont subfont,PS_Private priv)110 cff_make_private_dict( CFF_SubFont subfont, 111 PS_Private priv ) 112 { 113 CFF_Private cpriv = &subfont->private_dict; 114 FT_UInt n, count; 115 116 117 FT_MEM_ZERO( priv, sizeof ( *priv ) ); 118 119 count = priv->num_blue_values = cpriv->num_blue_values; 120 for ( n = 0; n < count; n++ ) 121 priv->blue_values[n] = (FT_Short)cpriv->blue_values[n]; 122 123 count = priv->num_other_blues = cpriv->num_other_blues; 124 for ( n = 0; n < count; n++ ) 125 priv->other_blues[n] = (FT_Short)cpriv->other_blues[n]; 126 127 count = priv->num_family_blues = cpriv->num_family_blues; 128 for ( n = 0; n < count; n++ ) 129 priv->family_blues[n] = (FT_Short)cpriv->family_blues[n]; 130 131 count = priv->num_family_other_blues = cpriv->num_family_other_blues; 132 for ( n = 0; n < count; n++ ) 133 priv->family_other_blues[n] = (FT_Short)cpriv->family_other_blues[n]; 134 135 priv->blue_scale = cpriv->blue_scale; 136 priv->blue_shift = (FT_Int)cpriv->blue_shift; 137 priv->blue_fuzz = (FT_Int)cpriv->blue_fuzz; 138 139 priv->standard_width[0] = (FT_UShort)cpriv->standard_width; 140 priv->standard_height[0] = (FT_UShort)cpriv->standard_height; 141 142 count = priv->num_snap_widths = cpriv->num_snap_widths; 143 for ( n = 0; n < count; n++ ) 144 priv->snap_widths[n] = (FT_Short)cpriv->snap_widths[n]; 145 146 count = priv->num_snap_heights = cpriv->num_snap_heights; 147 for ( n = 0; n < count; n++ ) 148 priv->snap_heights[n] = (FT_Short)cpriv->snap_heights[n]; 149 150 priv->force_bold = cpriv->force_bold; 151 priv->language_group = cpriv->language_group; 152 priv->lenIV = cpriv->lenIV; 153 } 154 155 156 FT_LOCAL_DEF( FT_Error ) cff_size_init(FT_Size cffsize)157 cff_size_init( FT_Size cffsize ) /* CFF_Size */ 158 { 159 CFF_Size size = (CFF_Size)cffsize; 160 FT_Error error = FT_Err_Ok; 161 PSH_Globals_Funcs funcs = cff_size_get_globals_funcs( size ); 162 163 164 if ( funcs ) 165 { 166 CFF_Face face = (CFF_Face)cffsize->face; 167 CFF_Font font = (CFF_Font)face->extra.data; 168 CFF_Internal internal = NULL; 169 170 PS_PrivateRec priv; 171 FT_Memory memory = cffsize->face->memory; 172 173 FT_UInt i; 174 175 176 if ( FT_NEW( internal ) ) 177 goto Exit; 178 179 cff_make_private_dict( &font->top_font, &priv ); 180 error = funcs->create( cffsize->face->memory, &priv, 181 &internal->topfont ); 182 if ( error ) 183 goto Exit; 184 185 for ( i = font->num_subfonts; i > 0; i-- ) 186 { 187 CFF_SubFont sub = font->subfonts[i - 1]; 188 189 190 cff_make_private_dict( sub, &priv ); 191 error = funcs->create( cffsize->face->memory, &priv, 192 &internal->subfonts[i - 1] ); 193 if ( error ) 194 goto Exit; 195 } 196 197 cffsize->internal = (FT_Size_Internal)(void*)internal; 198 } 199 200 size->strike_index = 0xFFFFFFFFUL; 201 202 Exit: 203 return error; 204 } 205 206 207 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 208 209 FT_LOCAL_DEF( FT_Error ) cff_size_select(FT_Size size,FT_ULong strike_index)210 cff_size_select( FT_Size size, 211 FT_ULong strike_index ) 212 { 213 CFF_Size cffsize = (CFF_Size)size; 214 PSH_Globals_Funcs funcs; 215 216 217 cffsize->strike_index = strike_index; 218 219 FT_Select_Metrics( size->face, strike_index ); 220 221 funcs = cff_size_get_globals_funcs( cffsize ); 222 223 if ( funcs ) 224 { 225 CFF_Face face = (CFF_Face)size->face; 226 CFF_Font font = (CFF_Font)face->extra.data; 227 CFF_Internal internal = (CFF_Internal)size->internal; 228 229 FT_Long top_upm = (FT_Long)font->top_font.font_dict.units_per_em; 230 FT_UInt i; 231 232 233 funcs->set_scale( internal->topfont, 234 size->metrics.x_scale, size->metrics.y_scale, 235 0, 0 ); 236 237 for ( i = font->num_subfonts; i > 0; i-- ) 238 { 239 CFF_SubFont sub = font->subfonts[i - 1]; 240 FT_Long sub_upm = (FT_Long)sub->font_dict.units_per_em; 241 FT_Pos x_scale, y_scale; 242 243 244 if ( top_upm != sub_upm ) 245 { 246 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); 247 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); 248 } 249 else 250 { 251 x_scale = size->metrics.x_scale; 252 y_scale = size->metrics.y_scale; 253 } 254 255 funcs->set_scale( internal->subfonts[i - 1], 256 x_scale, y_scale, 0, 0 ); 257 } 258 } 259 260 return FT_Err_Ok; 261 } 262 263 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ 264 265 266 FT_LOCAL_DEF( FT_Error ) cff_size_request(FT_Size size,FT_Size_Request req)267 cff_size_request( FT_Size size, 268 FT_Size_Request req ) 269 { 270 CFF_Size cffsize = (CFF_Size)size; 271 PSH_Globals_Funcs funcs; 272 273 274 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 275 276 if ( FT_HAS_FIXED_SIZES( size->face ) ) 277 { 278 CFF_Face cffface = (CFF_Face)size->face; 279 SFNT_Service sfnt = (SFNT_Service)cffface->sfnt; 280 FT_ULong strike_index; 281 282 283 if ( sfnt->set_sbit_strike( cffface, req, &strike_index ) ) 284 cffsize->strike_index = 0xFFFFFFFFUL; 285 else 286 return cff_size_select( size, strike_index ); 287 } 288 289 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ 290 291 FT_Request_Metrics( size->face, req ); 292 293 funcs = cff_size_get_globals_funcs( cffsize ); 294 295 if ( funcs ) 296 { 297 CFF_Face cffface = (CFF_Face)size->face; 298 CFF_Font font = (CFF_Font)cffface->extra.data; 299 CFF_Internal internal = (CFF_Internal)size->internal; 300 301 FT_Long top_upm = (FT_Long)font->top_font.font_dict.units_per_em; 302 FT_UInt i; 303 304 305 funcs->set_scale( internal->topfont, 306 size->metrics.x_scale, size->metrics.y_scale, 307 0, 0 ); 308 309 for ( i = font->num_subfonts; i > 0; i-- ) 310 { 311 CFF_SubFont sub = font->subfonts[i - 1]; 312 FT_Long sub_upm = (FT_Long)sub->font_dict.units_per_em; 313 FT_Pos x_scale, y_scale; 314 315 316 if ( top_upm != sub_upm ) 317 { 318 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); 319 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); 320 } 321 else 322 { 323 x_scale = size->metrics.x_scale; 324 y_scale = size->metrics.y_scale; 325 } 326 327 funcs->set_scale( internal->subfonts[i - 1], 328 x_scale, y_scale, 0, 0 ); 329 } 330 } 331 332 return FT_Err_Ok; 333 } 334 335 336 /*************************************************************************/ 337 /* */ 338 /* SLOT FUNCTIONS */ 339 /* */ 340 /*************************************************************************/ 341 342 FT_LOCAL_DEF( void ) cff_slot_done(FT_GlyphSlot slot)343 cff_slot_done( FT_GlyphSlot slot ) 344 { 345 slot->internal->glyph_hints = NULL; 346 } 347 348 349 FT_LOCAL_DEF( FT_Error ) cff_slot_init(FT_GlyphSlot slot)350 cff_slot_init( FT_GlyphSlot slot ) 351 { 352 CFF_Face face = (CFF_Face)slot->face; 353 CFF_Font font = (CFF_Font)face->extra.data; 354 PSHinter_Service pshinter = font->pshinter; 355 356 357 if ( pshinter ) 358 { 359 FT_Module module; 360 361 362 module = FT_Get_Module( slot->face->driver->root.library, 363 "pshinter" ); 364 if ( module ) 365 { 366 T2_Hints_Funcs funcs; 367 368 369 funcs = pshinter->get_t2_funcs( module ); 370 slot->internal->glyph_hints = (void*)funcs; 371 } 372 } 373 374 return FT_Err_Ok; 375 } 376 377 378 /*************************************************************************/ 379 /* */ 380 /* FACE FUNCTIONS */ 381 /* */ 382 /*************************************************************************/ 383 384 static FT_String* cff_strcpy(FT_Memory memory,const FT_String * source)385 cff_strcpy( FT_Memory memory, 386 const FT_String* source ) 387 { 388 FT_Error error; 389 FT_String* result; 390 391 392 (void)FT_STRDUP( result, source ); 393 394 FT_UNUSED( error ); 395 396 return result; 397 } 398 399 400 /* Strip all subset prefixes of the form `ABCDEF+'. Usually, there */ 401 /* is only one, but font names like `APCOOG+JFABTD+FuturaBQ-Bold' */ 402 /* have been seen in the wild. */ 403 404 static void remove_subset_prefix(FT_String * name)405 remove_subset_prefix( FT_String* name ) 406 { 407 FT_Int32 idx = 0; 408 FT_Int32 length = (FT_Int32)strlen( name ) + 1; 409 FT_Bool continue_search = 1; 410 411 412 while ( continue_search ) 413 { 414 if ( length >= 7 && name[6] == '+' ) 415 { 416 for ( idx = 0; idx < 6; idx++ ) 417 { 418 /* ASCII uppercase letters */ 419 if ( !( 'A' <= name[idx] && name[idx] <= 'Z' ) ) 420 continue_search = 0; 421 } 422 423 if ( continue_search ) 424 { 425 for ( idx = 7; idx < length; idx++ ) 426 name[idx - 7] = name[idx]; 427 length -= 7; 428 } 429 } 430 else 431 continue_search = 0; 432 } 433 } 434 435 436 /* Remove the style part from the family name (if present). */ 437 438 static void remove_style(FT_String * family_name,const FT_String * style_name)439 remove_style( FT_String* family_name, 440 const FT_String* style_name ) 441 { 442 FT_Int32 family_name_length, style_name_length; 443 444 445 family_name_length = (FT_Int32)strlen( family_name ); 446 style_name_length = (FT_Int32)strlen( style_name ); 447 448 if ( family_name_length > style_name_length ) 449 { 450 FT_Int idx; 451 452 453 for ( idx = 1; idx <= style_name_length; ++idx ) 454 { 455 if ( family_name[family_name_length - idx] != 456 style_name[style_name_length - idx] ) 457 break; 458 } 459 460 if ( idx > style_name_length ) 461 { 462 /* family_name ends with style_name; remove it */ 463 idx = family_name_length - style_name_length - 1; 464 465 /* also remove special characters */ 466 /* between real family name and style */ 467 while ( idx > 0 && 468 ( family_name[idx] == '-' || 469 family_name[idx] == ' ' || 470 family_name[idx] == '_' || 471 family_name[idx] == '+' ) ) 472 --idx; 473 474 if ( idx > 0 ) 475 family_name[idx + 1] = '\0'; 476 } 477 } 478 } 479 480 481 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)482 cff_face_init( FT_Stream stream, 483 FT_Face cffface, /* CFF_Face */ 484 FT_Int face_index, 485 FT_Int num_params, 486 FT_Parameter* params ) 487 { 488 CFF_Face face = (CFF_Face)cffface; 489 FT_Error error; 490 SFNT_Service sfnt; 491 FT_Service_PsCMaps psnames; 492 PSHinter_Service pshinter; 493 FT_Bool pure_cff = 1; 494 FT_Bool sfnt_format = 0; 495 FT_Library library = cffface->driver->root.library; 496 497 498 sfnt = (SFNT_Service)FT_Get_Module_Interface( 499 library, "sfnt" ); 500 if ( !sfnt ) 501 { 502 FT_ERROR(( "cff_face_init: cannot access `sfnt' module\n" )); 503 error = FT_THROW( Missing_Module ); 504 goto Exit; 505 } 506 507 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); 508 509 pshinter = (PSHinter_Service)FT_Get_Module_Interface( 510 library, "pshinter" ); 511 512 FT_TRACE2(( "CFF driver\n" )); 513 514 /* create input stream from resource */ 515 if ( FT_STREAM_SEEK( 0 ) ) 516 goto Exit; 517 518 /* check whether we have a valid OpenType file */ 519 error = sfnt->init_face( stream, face, face_index, num_params, params ); 520 if ( !error ) 521 { 522 if ( face->format_tag != TTAG_OTTO ) /* `OTTO'; OpenType/CFF font */ 523 { 524 FT_TRACE2(( " not an OpenType/CFF font\n" )); 525 error = FT_THROW( Unknown_File_Format ); 526 goto Exit; 527 } 528 529 /* if we are performing a simple font format check, exit immediately */ 530 if ( face_index < 0 ) 531 return FT_Err_Ok; 532 533 sfnt_format = 1; 534 535 /* now, the font can be either an OpenType/CFF font, or an SVG CEF */ 536 /* font; in the latter case it doesn't have a `head' table */ 537 error = face->goto_table( face, TTAG_head, stream, 0 ); 538 if ( !error ) 539 { 540 pure_cff = 0; 541 542 /* load font directory */ 543 error = sfnt->load_face( stream, face, face_index, 544 num_params, params ); 545 if ( error ) 546 goto Exit; 547 } 548 else 549 { 550 /* load the `cmap' table explicitly */ 551 error = sfnt->load_cmap( face, stream ); 552 if ( error ) 553 goto Exit; 554 } 555 556 /* now load the CFF part of the file */ 557 error = face->goto_table( face, TTAG_CFF, stream, 0 ); 558 if ( error ) 559 goto Exit; 560 } 561 else 562 { 563 /* rewind to start of file; we are going to load a pure-CFF font */ 564 if ( FT_STREAM_SEEK( 0 ) ) 565 goto Exit; 566 error = FT_Err_Ok; 567 } 568 569 /* now load and parse the CFF table in the file */ 570 { 571 CFF_Font cff = NULL; 572 CFF_FontRecDict dict; 573 FT_Memory memory = cffface->memory; 574 FT_Int32 flags; 575 FT_UInt i; 576 577 578 if ( FT_NEW( cff ) ) 579 goto Exit; 580 581 face->extra.data = cff; 582 error = cff_font_load( library, stream, face_index, cff, pure_cff ); 583 if ( error ) 584 goto Exit; 585 586 /* if we are performing a simple font format check, exit immediately */ 587 /* (this is here for pure CFF) */ 588 if ( face_index < 0 ) 589 { 590 cffface->num_faces = (FT_Long)cff->num_faces; 591 return FT_Err_Ok; 592 } 593 594 cff->pshinter = pshinter; 595 cff->psnames = psnames; 596 597 cffface->face_index = face_index & 0xFFFF; 598 599 /* Complement the root flags with some interesting information. */ 600 /* Note that this is only necessary for pure CFF and CEF fonts; */ 601 /* SFNT based fonts use the `name' table instead. */ 602 603 cffface->num_glyphs = (FT_Long)cff->num_glyphs; 604 605 dict = &cff->top_font.font_dict; 606 607 /* we need the `PSNames' module for CFF and CEF formats */ 608 /* which aren't CID-keyed */ 609 if ( dict->cid_registry == 0xFFFFU && !psnames ) 610 { 611 FT_ERROR(( "cff_face_init:" 612 " cannot open CFF & CEF fonts\n" 613 " " 614 " without the `PSNames' module\n" )); 615 error = FT_THROW( Missing_Module ); 616 goto Exit; 617 } 618 619 #ifdef FT_DEBUG_LEVEL_TRACE 620 { 621 FT_UInt idx; 622 FT_String* s; 623 624 625 FT_TRACE4(( "SIDs\n" )); 626 627 /* dump string index, including default strings for convenience */ 628 for ( idx = 0; idx <= 390; idx++ ) 629 { 630 s = cff_index_get_sid_string( cff, idx ); 631 if ( s ) 632 FT_TRACE4(( " %5d %s\n", idx, s )); 633 } 634 635 /* In Multiple Master CFFs, two SIDs hold the Normalize Design */ 636 /* Vector (NDV) and Convert Design Vector (CDV) charstrings, */ 637 /* which may contain NULL bytes in the middle of the data, too. */ 638 /* We thus access `cff->strings' directly. */ 639 for ( idx = 1; idx < cff->num_strings; idx++ ) 640 { 641 FT_Byte* s1 = cff->strings[idx - 1]; 642 FT_Byte* s2 = cff->strings[idx]; 643 FT_PtrDist s1len = s2 - s1 - 1; /* without the final NULL byte */ 644 FT_PtrDist l; 645 646 647 FT_TRACE4(( " %5d ", idx + 390 )); 648 for ( l = 0; l < s1len; l++ ) 649 FT_TRACE4(( "%c", s1[l] )); 650 FT_TRACE4(( "\n" )); 651 } 652 653 /* print last element */ 654 if ( cff->num_strings ) 655 { 656 FT_Byte* s1 = cff->strings[cff->num_strings - 1]; 657 FT_Byte* s2 = cff->string_pool + cff->string_pool_size; 658 FT_PtrDist s1len = s2 - s1 - 1; 659 FT_PtrDist l; 660 661 662 FT_TRACE4(( " %5d ", cff->num_strings + 390 )); 663 for ( l = 0; l < s1len; l++ ) 664 FT_TRACE4(( "%c", s1[l] )); 665 FT_TRACE4(( "\n" )); 666 } 667 } 668 #endif /* FT_DEBUG_LEVEL_TRACE */ 669 670 if ( !dict->has_font_matrix ) 671 dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM; 672 673 /* Normalize the font matrix so that `matrix->yy' is 1; if */ 674 /* it is zero, we use `matrix->yx' instead. The scaling is */ 675 /* done with `units_per_em' then (at this point, it already */ 676 /* contains the scaling factor, but without normalization */ 677 /* of the matrix). */ 678 /* */ 679 /* Note that the offsets must be expressed in integer font */ 680 /* units. */ 681 682 { 683 FT_Matrix* matrix = &dict->font_matrix; 684 FT_Vector* offset = &dict->font_offset; 685 FT_ULong* upm = &dict->units_per_em; 686 FT_Fixed temp; 687 688 689 temp = matrix->yy ? FT_ABS( matrix->yy ) 690 : FT_ABS( matrix->yx ); 691 692 if ( temp != 0x10000L ) 693 { 694 *upm = (FT_ULong)FT_DivFix( (FT_Long)*upm, temp ); 695 696 matrix->xx = FT_DivFix( matrix->xx, temp ); 697 matrix->yx = FT_DivFix( matrix->yx, temp ); 698 matrix->xy = FT_DivFix( matrix->xy, temp ); 699 matrix->yy = FT_DivFix( matrix->yy, temp ); 700 offset->x = FT_DivFix( offset->x, temp ); 701 offset->y = FT_DivFix( offset->y, temp ); 702 } 703 704 offset->x >>= 16; 705 offset->y >>= 16; 706 } 707 708 for ( i = cff->num_subfonts; i > 0; i-- ) 709 { 710 CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict; 711 CFF_FontRecDict top = &cff->top_font.font_dict; 712 713 FT_Matrix* matrix; 714 FT_Vector* offset; 715 FT_ULong* upm; 716 FT_Fixed temp; 717 718 719 if ( sub->has_font_matrix ) 720 { 721 FT_Long scaling; 722 723 724 /* if we have a top-level matrix, */ 725 /* concatenate the subfont matrix */ 726 727 if ( top->has_font_matrix ) 728 { 729 if ( top->units_per_em > 1 && sub->units_per_em > 1 ) 730 scaling = (FT_Long)FT_MIN( top->units_per_em, 731 sub->units_per_em ); 732 else 733 scaling = 1; 734 735 FT_Matrix_Multiply_Scaled( &top->font_matrix, 736 &sub->font_matrix, 737 scaling ); 738 FT_Vector_Transform_Scaled( &sub->font_offset, 739 &top->font_matrix, 740 scaling ); 741 742 sub->units_per_em = (FT_ULong) 743 FT_MulDiv( (FT_Long)sub->units_per_em, 744 (FT_Long)top->units_per_em, 745 scaling ); 746 } 747 } 748 else 749 { 750 sub->font_matrix = top->font_matrix; 751 sub->font_offset = top->font_offset; 752 753 sub->units_per_em = top->units_per_em; 754 } 755 756 matrix = &sub->font_matrix; 757 offset = &sub->font_offset; 758 upm = &sub->units_per_em; 759 760 temp = matrix->yy ? FT_ABS( matrix->yy ) 761 : FT_ABS( matrix->yx ); 762 763 764 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 if ( pure_cff ) 781 { 782 char* style_name = NULL; 783 784 785 /* set up num_faces */ 786 cffface->num_faces = (FT_Long)cff->num_faces; 787 788 /* compute number of glyphs */ 789 if ( dict->cid_registry != 0xFFFFU ) 790 cffface->num_glyphs = (FT_Long)( cff->charset.max_cid + 1 ); 791 else 792 cffface->num_glyphs = (FT_Long)cff->charstrings_index.count; 793 794 /* set global bbox, as well as EM size */ 795 cffface->bbox.xMin = dict->font_bbox.xMin >> 16; 796 cffface->bbox.yMin = dict->font_bbox.yMin >> 16; 797 /* no `U' suffix here to 0xFFFF! */ 798 cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16; 799 cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16; 800 801 cffface->units_per_EM = (FT_UShort)( dict->units_per_em ); 802 803 cffface->ascender = (FT_Short)( cffface->bbox.yMax ); 804 cffface->descender = (FT_Short)( cffface->bbox.yMin ); 805 806 cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 ); 807 if ( cffface->height < cffface->ascender - cffface->descender ) 808 cffface->height = (FT_Short)( cffface->ascender - cffface->descender ); 809 810 cffface->underline_position = 811 (FT_Short)( dict->underline_position >> 16 ); 812 cffface->underline_thickness = 813 (FT_Short)( dict->underline_thickness >> 16 ); 814 815 /* retrieve font family & style name */ 816 cffface->family_name = cff_index_get_name( 817 cff, 818 (FT_UInt)( face_index & 0xFFFF ) ); 819 if ( cffface->family_name ) 820 { 821 char* full = cff_index_get_sid_string( cff, 822 dict->full_name ); 823 char* fullp = full; 824 char* family = cffface->family_name; 825 char* family_name = NULL; 826 827 828 remove_subset_prefix( cffface->family_name ); 829 830 if ( dict->family_name ) 831 { 832 family_name = cff_index_get_sid_string( cff, 833 dict->family_name ); 834 if ( family_name ) 835 family = family_name; 836 } 837 838 /* We try to extract the style name from the full name. */ 839 /* We need to ignore spaces and dashes during the search. */ 840 if ( full && family ) 841 { 842 while ( *fullp ) 843 { 844 /* skip common characters at the start of both strings */ 845 if ( *fullp == *family ) 846 { 847 family++; 848 fullp++; 849 continue; 850 } 851 852 /* ignore spaces and dashes in full name during comparison */ 853 if ( *fullp == ' ' || *fullp == '-' ) 854 { 855 fullp++; 856 continue; 857 } 858 859 /* ignore spaces and dashes in family name during comparison */ 860 if ( *family == ' ' || *family == '-' ) 861 { 862 family++; 863 continue; 864 } 865 866 if ( !*family && *fullp ) 867 { 868 /* The full name begins with the same characters as the */ 869 /* family name, with spaces and dashes removed. In this */ 870 /* case, the remaining string in `fullp' will be used as */ 871 /* the style name. */ 872 style_name = cff_strcpy( memory, fullp ); 873 874 /* remove the style part from the family name (if present) */ 875 remove_style( cffface->family_name, style_name ); 876 } 877 break; 878 } 879 } 880 } 881 else 882 { 883 char *cid_font_name = 884 cff_index_get_sid_string( cff, 885 dict->cid_font_name ); 886 887 888 /* do we have a `/FontName' for a CID-keyed font? */ 889 if ( cid_font_name ) 890 cffface->family_name = cff_strcpy( memory, cid_font_name ); 891 } 892 893 if ( style_name ) 894 cffface->style_name = style_name; 895 else 896 /* assume "Regular" style if we don't know better */ 897 cffface->style_name = cff_strcpy( memory, (char *)"Regular" ); 898 899 /*******************************************************************/ 900 /* */ 901 /* Compute face flags. */ 902 /* */ 903 flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */ 904 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ 905 FT_FACE_FLAG_HINTER; /* has native hinter */ 906 907 if ( sfnt_format ) 908 flags |= FT_FACE_FLAG_SFNT; 909 910 /* fixed width font? */ 911 if ( dict->is_fixed_pitch ) 912 flags |= FT_FACE_FLAG_FIXED_WIDTH; 913 914 /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */ 915 #if 0 916 /* kerning available? */ 917 if ( face->kern_pairs ) 918 flags |= FT_FACE_FLAG_KERNING; 919 #endif 920 921 cffface->face_flags |= flags; 922 923 /*******************************************************************/ 924 /* */ 925 /* Compute style flags. */ 926 /* */ 927 flags = 0; 928 929 if ( dict->italic_angle ) 930 flags |= FT_STYLE_FLAG_ITALIC; 931 932 { 933 char *weight = cff_index_get_sid_string( cff, 934 dict->weight ); 935 936 937 if ( weight ) 938 if ( !ft_strcmp( weight, "Bold" ) || 939 !ft_strcmp( weight, "Black" ) ) 940 flags |= FT_STYLE_FLAG_BOLD; 941 } 942 943 /* double check */ 944 if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name ) 945 if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) || 946 !ft_strncmp( cffface->style_name, "Black", 5 ) ) 947 flags |= FT_STYLE_FLAG_BOLD; 948 949 cffface->style_flags = flags; 950 } 951 952 953 #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES 954 /* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */ 955 /* has unset this flag because of the 3.0 `post' table. */ 956 if ( dict->cid_registry == 0xFFFFU ) 957 cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; 958 #endif 959 960 if ( dict->cid_registry != 0xFFFFU && pure_cff ) 961 cffface->face_flags |= FT_FACE_FLAG_CID_KEYED; 962 963 964 /*******************************************************************/ 965 /* */ 966 /* Compute char maps. */ 967 /* */ 968 969 /* Try to synthesize a Unicode charmap if there is none available */ 970 /* already. If an OpenType font contains a Unicode "cmap", we */ 971 /* will use it, whatever be in the CFF part of the file. */ 972 { 973 FT_CharMapRec cmaprec; 974 FT_CharMap cmap; 975 FT_UInt nn; 976 CFF_Encoding encoding = &cff->encoding; 977 978 979 for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ ) 980 { 981 cmap = cffface->charmaps[nn]; 982 983 /* Windows Unicode? */ 984 if ( cmap->platform_id == TT_PLATFORM_MICROSOFT && 985 cmap->encoding_id == TT_MS_ID_UNICODE_CS ) 986 goto Skip_Unicode; 987 988 /* Apple Unicode platform id? */ 989 if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE ) 990 goto Skip_Unicode; /* Apple Unicode */ 991 } 992 993 /* since CID-keyed fonts don't contain glyph names, we can't */ 994 /* construct a cmap */ 995 if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU ) 996 goto Exit; 997 998 /* we didn't find a Unicode charmap -- synthesize one */ 999 cmaprec.face = cffface; 1000 cmaprec.platform_id = TT_PLATFORM_MICROSOFT; 1001 cmaprec.encoding_id = TT_MS_ID_UNICODE_CS; 1002 cmaprec.encoding = FT_ENCODING_UNICODE; 1003 1004 nn = (FT_UInt)cffface->num_charmaps; 1005 1006 error = FT_CMap_New( &CFF_CMAP_UNICODE_CLASS_REC_GET, NULL, 1007 &cmaprec, NULL ); 1008 if ( error && 1009 FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) ) 1010 goto Exit; 1011 error = FT_Err_Ok; 1012 1013 /* if no Unicode charmap was previously selected, select this one */ 1014 if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps ) 1015 cffface->charmap = cffface->charmaps[nn]; 1016 1017 Skip_Unicode: 1018 if ( encoding->count > 0 ) 1019 { 1020 FT_CMap_Class clazz; 1021 1022 1023 cmaprec.face = cffface; 1024 cmaprec.platform_id = TT_PLATFORM_ADOBE; /* Adobe platform id */ 1025 1026 if ( encoding->offset == 0 ) 1027 { 1028 cmaprec.encoding_id = TT_ADOBE_ID_STANDARD; 1029 cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD; 1030 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; 1031 } 1032 else if ( encoding->offset == 1 ) 1033 { 1034 cmaprec.encoding_id = TT_ADOBE_ID_EXPERT; 1035 cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT; 1036 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; 1037 } 1038 else 1039 { 1040 cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM; 1041 cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM; 1042 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; 1043 } 1044 1045 error = FT_CMap_New( clazz, NULL, &cmaprec, NULL ); 1046 } 1047 } 1048 } 1049 1050 Exit: 1051 return error; 1052 } 1053 1054 1055 FT_LOCAL_DEF( void ) cff_face_done(FT_Face cffface)1056 cff_face_done( FT_Face cffface ) /* CFF_Face */ 1057 { 1058 CFF_Face face = (CFF_Face)cffface; 1059 FT_Memory memory; 1060 SFNT_Service sfnt; 1061 1062 1063 if ( !face ) 1064 return; 1065 1066 memory = cffface->memory; 1067 sfnt = (SFNT_Service)face->sfnt; 1068 1069 if ( sfnt ) 1070 sfnt->done_face( face ); 1071 1072 { 1073 CFF_Font cff = (CFF_Font)face->extra.data; 1074 1075 1076 if ( cff ) 1077 { 1078 cff_font_done( cff ); 1079 FT_FREE( face->extra.data ); 1080 } 1081 } 1082 } 1083 1084 1085 FT_LOCAL_DEF( FT_Error ) cff_driver_init(FT_Module module)1086 cff_driver_init( FT_Module module ) /* CFF_Driver */ 1087 { 1088 CFF_Driver driver = (CFF_Driver)module; 1089 1090 1091 /* set default property values, cf. `ftcffdrv.h' */ 1092 #ifdef CFF_CONFIG_OPTION_OLD_ENGINE 1093 driver->hinting_engine = FT_CFF_HINTING_FREETYPE; 1094 #else 1095 driver->hinting_engine = FT_CFF_HINTING_ADOBE; 1096 #endif 1097 1098 driver->no_stem_darkening = TRUE; 1099 1100 driver->darken_params[0] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1; 1101 driver->darken_params[1] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1; 1102 driver->darken_params[2] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2; 1103 driver->darken_params[3] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2; 1104 driver->darken_params[4] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3; 1105 driver->darken_params[5] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3; 1106 driver->darken_params[6] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4; 1107 driver->darken_params[7] = CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4; 1108 1109 return FT_Err_Ok; 1110 } 1111 1112 1113 FT_LOCAL_DEF( void ) cff_driver_done(FT_Module module)1114 cff_driver_done( FT_Module module ) /* CFF_Driver */ 1115 { 1116 FT_UNUSED( module ); 1117 } 1118 1119 1120 /* END */ 1121