1 /***************************************************************************/ 2 /* */ 3 /* cffobjs.c */ 4 /* */ 5 /* OpenType objects manager (body). */ 6 /* */ 7 /* Copyright 1996-2012 by */ 8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ 9 /* */ 10 /* This file is part of the FreeType project, and may only be used, */ 11 /* modified, and distributed under the terms of the FreeType project */ 12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 13 /* this file you indicate that you have read the license and */ 14 /* understand and accept it fully. */ 15 /* */ 16 /***************************************************************************/ 17 18 19 #include <ft2build.h> 20 #include FT_INTERNAL_DEBUG_H 21 #include FT_INTERNAL_CALC_H 22 #include FT_INTERNAL_STREAM_H 23 #include FT_ERRORS_H 24 #include FT_TRUETYPE_IDS_H 25 #include FT_TRUETYPE_TAGS_H 26 #include FT_INTERNAL_SFNT_H 27 #include "cffobjs.h" 28 #include "cffload.h" 29 #include "cffcmap.h" 30 #include "cfferrs.h" 31 #include "cffpic.h" 32 33 34 /*************************************************************************/ 35 /* */ 36 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 37 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 38 /* messages during execution. */ 39 /* */ 40 #undef FT_COMPONENT 41 #define FT_COMPONENT trace_cffobjs 42 43 44 /*************************************************************************/ 45 /* */ 46 /* SIZE FUNCTIONS */ 47 /* */ 48 /* Note that we store the global hints in the size's `internal' root */ 49 /* field. */ 50 /* */ 51 /*************************************************************************/ 52 53 54 static PSH_Globals_Funcs 55 cff_size_get_globals_funcs( CFF_Size size ) 56 { 57 CFF_Face face = (CFF_Face)size->root.face; 58 CFF_Font font = (CFF_Font)face->extra.data; 59 PSHinter_Service pshinter = font->pshinter; 60 FT_Module module; 61 62 63 module = FT_Get_Module( size->root.face->driver->root.library, 64 "pshinter" ); 65 return ( module && pshinter && pshinter->get_globals_funcs ) 66 ? pshinter->get_globals_funcs( module ) 67 : 0; 68 } 69 70 71 FT_LOCAL_DEF( void ) 72 cff_size_done( FT_Size cffsize ) /* CFF_Size */ 73 { 74 CFF_Size size = (CFF_Size)cffsize; 75 CFF_Face face = (CFF_Face)size->root.face; 76 CFF_Font font = (CFF_Font)face->extra.data; 77 CFF_Internal internal = (CFF_Internal)cffsize->internal; 78 79 80 if ( internal ) 81 { 82 PSH_Globals_Funcs funcs; 83 84 85 funcs = cff_size_get_globals_funcs( size ); 86 if ( funcs ) 87 { 88 FT_UInt i; 89 90 91 funcs->destroy( internal->topfont ); 92 93 for ( i = font->num_subfonts; i > 0; i-- ) 94 funcs->destroy( internal->subfonts[i - 1] ); 95 } 96 97 /* `internal' is freed by destroy_size (in ftobjs.c) */ 98 } 99 } 100 101 102 /* CFF and Type 1 private dictionaries have slightly different */ 103 /* structures; we need to synthesize a Type 1 dictionary on the fly */ 104 105 static void 106 cff_make_private_dict( CFF_SubFont subfont, 107 PS_Private priv ) 108 { 109 CFF_Private cpriv = &subfont->private_dict; 110 FT_UInt n, count; 111 112 113 FT_MEM_ZERO( priv, sizeof ( *priv ) ); 114 115 count = priv->num_blue_values = cpriv->num_blue_values; 116 for ( n = 0; n < count; n++ ) 117 priv->blue_values[n] = (FT_Short)cpriv->blue_values[n]; 118 119 count = priv->num_other_blues = cpriv->num_other_blues; 120 for ( n = 0; n < count; n++ ) 121 priv->other_blues[n] = (FT_Short)cpriv->other_blues[n]; 122 123 count = priv->num_family_blues = cpriv->num_family_blues; 124 for ( n = 0; n < count; n++ ) 125 priv->family_blues[n] = (FT_Short)cpriv->family_blues[n]; 126 127 count = priv->num_family_other_blues = cpriv->num_family_other_blues; 128 for ( n = 0; n < count; n++ ) 129 priv->family_other_blues[n] = (FT_Short)cpriv->family_other_blues[n]; 130 131 priv->blue_scale = cpriv->blue_scale; 132 priv->blue_shift = (FT_Int)cpriv->blue_shift; 133 priv->blue_fuzz = (FT_Int)cpriv->blue_fuzz; 134 135 priv->standard_width[0] = (FT_UShort)cpriv->standard_width; 136 priv->standard_height[0] = (FT_UShort)cpriv->standard_height; 137 138 count = priv->num_snap_widths = cpriv->num_snap_widths; 139 for ( n = 0; n < count; n++ ) 140 priv->snap_widths[n] = (FT_Short)cpriv->snap_widths[n]; 141 142 count = priv->num_snap_heights = cpriv->num_snap_heights; 143 for ( n = 0; n < count; n++ ) 144 priv->snap_heights[n] = (FT_Short)cpriv->snap_heights[n]; 145 146 priv->force_bold = cpriv->force_bold; 147 priv->language_group = cpriv->language_group; 148 priv->lenIV = cpriv->lenIV; 149 } 150 151 152 FT_LOCAL_DEF( FT_Error ) 153 cff_size_init( FT_Size cffsize ) /* CFF_Size */ 154 { 155 CFF_Size size = (CFF_Size)cffsize; 156 FT_Error error = CFF_Err_Ok; 157 PSH_Globals_Funcs funcs = cff_size_get_globals_funcs( size ); 158 159 160 if ( funcs ) 161 { 162 CFF_Face face = (CFF_Face)cffsize->face; 163 CFF_Font font = (CFF_Font)face->extra.data; 164 CFF_Internal internal = NULL; 165 166 PS_PrivateRec priv; 167 FT_Memory memory = cffsize->face->memory; 168 169 FT_UInt i; 170 171 172 if ( FT_NEW( internal ) ) 173 goto Exit; 174 175 cff_make_private_dict( &font->top_font, &priv ); 176 error = funcs->create( cffsize->face->memory, &priv, 177 &internal->topfont ); 178 if ( error ) 179 goto Exit; 180 181 for ( i = font->num_subfonts; i > 0; i-- ) 182 { 183 CFF_SubFont sub = font->subfonts[i - 1]; 184 185 186 cff_make_private_dict( sub, &priv ); 187 error = funcs->create( cffsize->face->memory, &priv, 188 &internal->subfonts[i - 1] ); 189 if ( error ) 190 goto Exit; 191 } 192 193 cffsize->internal = (FT_Size_Internal)(void*)internal; 194 } 195 196 size->strike_index = 0xFFFFFFFFUL; 197 198 Exit: 199 return error; 200 } 201 202 203 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 204 205 FT_LOCAL_DEF( FT_Error ) 206 cff_size_select( FT_Size size, 207 FT_ULong strike_index ) 208 { 209 CFF_Size cffsize = (CFF_Size)size; 210 PSH_Globals_Funcs funcs; 211 212 213 cffsize->strike_index = strike_index; 214 215 FT_Select_Metrics( size->face, strike_index ); 216 217 funcs = cff_size_get_globals_funcs( cffsize ); 218 219 if ( funcs ) 220 { 221 CFF_Face face = (CFF_Face)size->face; 222 CFF_Font font = (CFF_Font)face->extra.data; 223 CFF_Internal internal = (CFF_Internal)size->internal; 224 225 FT_ULong top_upm = font->top_font.font_dict.units_per_em; 226 FT_UInt i; 227 228 229 funcs->set_scale( internal->topfont, 230 size->metrics.x_scale, size->metrics.y_scale, 231 0, 0 ); 232 233 for ( i = font->num_subfonts; i > 0; i-- ) 234 { 235 CFF_SubFont sub = font->subfonts[i - 1]; 236 FT_ULong sub_upm = sub->font_dict.units_per_em; 237 FT_Pos x_scale, y_scale; 238 239 240 if ( top_upm != sub_upm ) 241 { 242 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); 243 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); 244 } 245 else 246 { 247 x_scale = size->metrics.x_scale; 248 y_scale = size->metrics.y_scale; 249 } 250 251 funcs->set_scale( internal->subfonts[i - 1], 252 x_scale, y_scale, 0, 0 ); 253 } 254 } 255 256 return CFF_Err_Ok; 257 } 258 259 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ 260 261 262 FT_LOCAL_DEF( FT_Error ) 263 cff_size_request( FT_Size size, 264 FT_Size_Request req ) 265 { 266 CFF_Size cffsize = (CFF_Size)size; 267 PSH_Globals_Funcs funcs; 268 269 270 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 271 272 if ( FT_HAS_FIXED_SIZES( size->face ) ) 273 { 274 CFF_Face cffface = (CFF_Face)size->face; 275 SFNT_Service sfnt = (SFNT_Service)cffface->sfnt; 276 FT_ULong strike_index; 277 278 279 if ( sfnt->set_sbit_strike( cffface, req, &strike_index ) ) 280 cffsize->strike_index = 0xFFFFFFFFUL; 281 else 282 return cff_size_select( size, strike_index ); 283 } 284 285 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ 286 287 FT_Request_Metrics( size->face, req ); 288 289 funcs = cff_size_get_globals_funcs( cffsize ); 290 291 if ( funcs ) 292 { 293 CFF_Face cffface = (CFF_Face)size->face; 294 CFF_Font font = (CFF_Font)cffface->extra.data; 295 CFF_Internal internal = (CFF_Internal)size->internal; 296 297 FT_ULong top_upm = font->top_font.font_dict.units_per_em; 298 FT_UInt i; 299 300 301 funcs->set_scale( internal->topfont, 302 size->metrics.x_scale, size->metrics.y_scale, 303 0, 0 ); 304 305 for ( i = font->num_subfonts; i > 0; i-- ) 306 { 307 CFF_SubFont sub = font->subfonts[i - 1]; 308 FT_ULong sub_upm = sub->font_dict.units_per_em; 309 FT_Pos x_scale, y_scale; 310 311 312 if ( top_upm != sub_upm ) 313 { 314 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); 315 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); 316 } 317 else 318 { 319 x_scale = size->metrics.x_scale; 320 y_scale = size->metrics.y_scale; 321 } 322 323 funcs->set_scale( internal->subfonts[i - 1], 324 x_scale, y_scale, 0, 0 ); 325 } 326 } 327 328 return CFF_Err_Ok; 329 } 330 331 332 /*************************************************************************/ 333 /* */ 334 /* SLOT FUNCTIONS */ 335 /* */ 336 /*************************************************************************/ 337 338 FT_LOCAL_DEF( void ) 339 cff_slot_done( FT_GlyphSlot slot ) 340 { 341 slot->internal->glyph_hints = 0; 342 } 343 344 345 FT_LOCAL_DEF( FT_Error ) 346 cff_slot_init( FT_GlyphSlot slot ) 347 { 348 CFF_Face face = (CFF_Face)slot->face; 349 CFF_Font font = (CFF_Font)face->extra.data; 350 PSHinter_Service pshinter = font->pshinter; 351 352 353 if ( pshinter ) 354 { 355 FT_Module module; 356 357 358 module = FT_Get_Module( slot->face->driver->root.library, 359 "pshinter" ); 360 if ( module ) 361 { 362 T2_Hints_Funcs funcs; 363 364 365 funcs = pshinter->get_t2_funcs( module ); 366 slot->internal->glyph_hints = (void*)funcs; 367 } 368 } 369 370 return CFF_Err_Ok; 371 } 372 373 374 /*************************************************************************/ 375 /* */ 376 /* FACE FUNCTIONS */ 377 /* */ 378 /*************************************************************************/ 379 380 static FT_String* 381 cff_strcpy( FT_Memory memory, 382 const FT_String* source ) 383 { 384 FT_Error error; 385 FT_String* result; 386 387 388 (void)FT_STRDUP( result, source ); 389 390 FT_UNUSED( error ); 391 392 return result; 393 } 394 395 396 /* Strip all subset prefixes of the form `ABCDEF+'. Usually, there */ 397 /* is only one, but font names like `APCOOG+JFABTD+FuturaBQ-Bold' */ 398 /* have been seen in the wild. */ 399 400 static void 401 remove_subset_prefix( FT_String* name ) 402 { 403 FT_Int32 idx = 0; 404 FT_Int32 length = strlen( name ) + 1; 405 FT_Bool continue_search = 1; 406 407 408 while ( continue_search ) 409 { 410 if ( length >= 7 && name[6] == '+' ) 411 { 412 for ( idx = 0; idx < 6; idx++ ) 413 { 414 /* ASCII uppercase letters */ 415 if ( !( 'A' <= name[idx] && name[idx] <= 'Z' ) ) 416 continue_search = 0; 417 } 418 419 if ( continue_search ) 420 { 421 for ( idx = 7; idx < length; idx++ ) 422 name[idx - 7] = name[idx]; 423 length -= 7; 424 } 425 } 426 else 427 continue_search = 0; 428 } 429 } 430 431 432 /* Remove the style part from the family name (if present). */ 433 434 static void 435 remove_style( FT_String* family_name, 436 const FT_String* style_name ) 437 { 438 FT_Int32 family_name_length, style_name_length; 439 440 441 family_name_length = strlen( family_name ); 442 style_name_length = strlen( style_name ); 443 444 if ( family_name_length > style_name_length ) 445 { 446 FT_Int idx; 447 448 449 for ( idx = 1; idx <= style_name_length; ++idx ) 450 { 451 if ( family_name[family_name_length - idx] != 452 style_name[style_name_length - idx] ) 453 break; 454 } 455 456 if ( idx > style_name_length ) 457 { 458 /* family_name ends with style_name; remove it */ 459 idx = family_name_length - style_name_length - 1; 460 461 /* also remove special characters */ 462 /* between real family name and style */ 463 while ( idx > 0 && 464 ( family_name[idx] == '-' || 465 family_name[idx] == ' ' || 466 family_name[idx] == '_' || 467 family_name[idx] == '+' ) ) 468 --idx; 469 470 if ( idx > 0 ) 471 family_name[idx + 1] = '\0'; 472 } 473 } 474 } 475 476 477 FT_LOCAL_DEF( FT_Error ) 478 cff_face_init( FT_Stream stream, 479 FT_Face cffface, /* CFF_Face */ 480 FT_Int face_index, 481 FT_Int num_params, 482 FT_Parameter* params ) 483 { 484 CFF_Face face = (CFF_Face)cffface; 485 FT_Error error; 486 SFNT_Service sfnt; 487 FT_Service_PsCMaps psnames; 488 PSHinter_Service pshinter; 489 FT_Bool pure_cff = 1; 490 FT_Bool sfnt_format = 0; 491 FT_Library library = cffface->driver->root.library; 492 493 494 sfnt = (SFNT_Service)FT_Get_Module_Interface( 495 library, "sfnt" ); 496 if ( !sfnt ) 497 { 498 FT_ERROR(( "cff_face_init: cannot access `sfnt' module\n" )); 499 error = CFF_Err_Missing_Module; 500 goto Exit; 501 } 502 503 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); 504 505 pshinter = (PSHinter_Service)FT_Get_Module_Interface( 506 library, "pshinter" ); 507 508 FT_TRACE2(( "CFF driver\n" )); 509 510 /* create input stream from resource */ 511 if ( FT_STREAM_SEEK( 0 ) ) 512 goto Exit; 513 514 /* check whether we have a valid OpenType file */ 515 error = sfnt->init_face( stream, face, face_index, num_params, params ); 516 if ( !error ) 517 { 518 if ( face->format_tag != TTAG_OTTO ) /* `OTTO'; OpenType/CFF font */ 519 { 520 FT_TRACE2(( " not an OpenType/CFF font\n" )); 521 error = CFF_Err_Unknown_File_Format; 522 goto Exit; 523 } 524 525 /* if we are performing a simple font format check, exit immediately */ 526 if ( face_index < 0 ) 527 return CFF_Err_Ok; 528 529 /* UNDOCUMENTED! A CFF in an SFNT can have only a single font. */ 530 if ( face_index > 0 ) 531 { 532 FT_ERROR(( "cff_face_init: invalid face index\n" )); 533 error = CFF_Err_Invalid_Argument; 534 goto Exit; 535 } 536 537 sfnt_format = 1; 538 539 /* now, the font can be either an OpenType/CFF font, or an SVG CEF */ 540 /* font; in the latter case it doesn't have a `head' table */ 541 error = face->goto_table( face, TTAG_head, stream, 0 ); 542 if ( !error ) 543 { 544 pure_cff = 0; 545 546 /* load font directory */ 547 error = sfnt->load_face( stream, face, 0, num_params, params ); 548 if ( error ) 549 goto Exit; 550 } 551 else 552 { 553 /* load the `cmap' table explicitly */ 554 error = sfnt->load_cmap( face, stream ); 555 if ( error ) 556 goto Exit; 557 558 /* XXX: we don't load the GPOS table, as OpenType Layout */ 559 /* support will be added later to a layout library on top of */ 560 /* FreeType 2 */ 561 } 562 563 /* now load the CFF part of the file */ 564 error = face->goto_table( face, TTAG_CFF, stream, 0 ); 565 if ( error ) 566 goto Exit; 567 } 568 else 569 { 570 /* rewind to start of file; we are going to load a pure-CFF font */ 571 if ( FT_STREAM_SEEK( 0 ) ) 572 goto Exit; 573 error = CFF_Err_Ok; 574 } 575 576 /* now load and parse the CFF table in the file */ 577 { 578 CFF_Font cff = NULL; 579 CFF_FontRecDict dict; 580 FT_Memory memory = cffface->memory; 581 FT_Int32 flags; 582 FT_UInt i; 583 584 585 if ( FT_NEW( cff ) ) 586 goto Exit; 587 588 face->extra.data = cff; 589 error = cff_font_load( library, stream, face_index, cff, pure_cff ); 590 if ( error ) 591 goto Exit; 592 593 cff->pshinter = pshinter; 594 cff->psnames = psnames; 595 596 cffface->face_index = face_index; 597 598 /* Complement the root flags with some interesting information. */ 599 /* Note that this is only necessary for pure CFF and CEF fonts; */ 600 /* SFNT based fonts use the `name' table instead. */ 601 602 cffface->num_glyphs = cff->num_glyphs; 603 604 dict = &cff->top_font.font_dict; 605 606 /* we need the `PSNames' module for CFF and CEF formats */ 607 /* which aren't CID-keyed */ 608 if ( dict->cid_registry == 0xFFFFU && !psnames ) 609 { 610 FT_ERROR(( "cff_face_init:" 611 " cannot open CFF & CEF fonts\n" 612 " " 613 " without the `PSNames' module\n" )); 614 error = CFF_Err_Missing_Module; 615 goto Exit; 616 } 617 618 #ifdef FT_DEBUG_LEVEL_TRACE 619 { 620 FT_UInt idx; 621 FT_String* s; 622 623 624 FT_TRACE4(( "SIDs\n" )); 625 626 /* dump string index, including default strings for convenience */ 627 for ( idx = 0; idx < cff->num_strings + 390; idx++ ) 628 { 629 s = cff_index_get_sid_string( cff, idx ); 630 if ( s ) 631 FT_TRACE4((" %5d %s\n", idx, s )); 632 } 633 } 634 #endif /* FT_DEBUG_LEVEL_TRACE */ 635 636 if ( !dict->has_font_matrix ) 637 dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM; 638 639 /* Normalize the font matrix so that `matrix->xx' is 1; the */ 640 /* scaling is done with `units_per_em' then (at this point, */ 641 /* it already contains the scaling factor, but without */ 642 /* normalization of the matrix). */ 643 /* */ 644 /* Note that the offsets must be expressed in integer font */ 645 /* units. */ 646 647 { 648 FT_Matrix* matrix = &dict->font_matrix; 649 FT_Vector* offset = &dict->font_offset; 650 FT_ULong* upm = &dict->units_per_em; 651 FT_Fixed temp = FT_ABS( matrix->yy ); 652 653 654 if ( temp != 0x10000L ) 655 { 656 *upm = FT_DivFix( *upm, temp ); 657 658 matrix->xx = FT_DivFix( matrix->xx, temp ); 659 matrix->yx = FT_DivFix( matrix->yx, temp ); 660 matrix->xy = FT_DivFix( matrix->xy, temp ); 661 matrix->yy = FT_DivFix( matrix->yy, temp ); 662 offset->x = FT_DivFix( offset->x, temp ); 663 offset->y = FT_DivFix( offset->y, temp ); 664 } 665 666 offset->x >>= 16; 667 offset->y >>= 16; 668 } 669 670 for ( i = cff->num_subfonts; i > 0; i-- ) 671 { 672 CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict; 673 CFF_FontRecDict top = &cff->top_font.font_dict; 674 675 FT_Matrix* matrix; 676 FT_Vector* offset; 677 FT_ULong* upm; 678 FT_Fixed temp; 679 680 681 if ( sub->has_font_matrix ) 682 { 683 FT_Long scaling; 684 685 686 /* if we have a top-level matrix, */ 687 /* concatenate the subfont matrix */ 688 689 if ( top->has_font_matrix ) 690 { 691 if ( top->units_per_em > 1 && sub->units_per_em > 1 ) 692 scaling = FT_MIN( top->units_per_em, sub->units_per_em ); 693 else 694 scaling = 1; 695 696 FT_Matrix_Multiply_Scaled( &top->font_matrix, 697 &sub->font_matrix, 698 scaling ); 699 FT_Vector_Transform_Scaled( &sub->font_offset, 700 &top->font_matrix, 701 scaling ); 702 703 sub->units_per_em = FT_MulDiv( sub->units_per_em, 704 top->units_per_em, 705 scaling ); 706 } 707 } 708 else 709 { 710 sub->font_matrix = top->font_matrix; 711 sub->font_offset = top->font_offset; 712 713 sub->units_per_em = top->units_per_em; 714 } 715 716 matrix = &sub->font_matrix; 717 offset = &sub->font_offset; 718 upm = &sub->units_per_em; 719 temp = FT_ABS( matrix->yy ); 720 721 if ( temp != 0x10000L ) 722 { 723 *upm = FT_DivFix( *upm, temp ); 724 725 matrix->xx = FT_DivFix( matrix->xx, temp ); 726 matrix->yx = FT_DivFix( matrix->yx, temp ); 727 matrix->xy = FT_DivFix( matrix->xy, temp ); 728 matrix->yy = FT_DivFix( matrix->yy, temp ); 729 offset->x = FT_DivFix( offset->x, temp ); 730 offset->y = FT_DivFix( offset->y, temp ); 731 } 732 733 offset->x >>= 16; 734 offset->y >>= 16; 735 } 736 737 if ( pure_cff ) 738 { 739 char* style_name = NULL; 740 741 742 /* set up num_faces */ 743 cffface->num_faces = cff->num_faces; 744 745 /* compute number of glyphs */ 746 if ( dict->cid_registry != 0xFFFFU ) 747 cffface->num_glyphs = cff->charset.max_cid + 1; 748 else 749 cffface->num_glyphs = cff->charstrings_index.count; 750 751 /* set global bbox, as well as EM size */ 752 cffface->bbox.xMin = dict->font_bbox.xMin >> 16; 753 cffface->bbox.yMin = dict->font_bbox.yMin >> 16; 754 /* no `U' suffix here to 0xFFFF! */ 755 cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16; 756 cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16; 757 758 cffface->units_per_EM = (FT_UShort)( dict->units_per_em ); 759 760 cffface->ascender = (FT_Short)( cffface->bbox.yMax ); 761 cffface->descender = (FT_Short)( cffface->bbox.yMin ); 762 763 cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 ); 764 if ( cffface->height < cffface->ascender - cffface->descender ) 765 cffface->height = (FT_Short)( cffface->ascender - cffface->descender ); 766 767 cffface->underline_position = 768 (FT_Short)( dict->underline_position >> 16 ); 769 cffface->underline_thickness = 770 (FT_Short)( dict->underline_thickness >> 16 ); 771 772 /* retrieve font family & style name */ 773 cffface->family_name = cff_index_get_name( cff, face_index ); 774 if ( cffface->family_name ) 775 { 776 char* full = cff_index_get_sid_string( cff, 777 dict->full_name ); 778 char* fullp = full; 779 char* family = cffface->family_name; 780 char* family_name = NULL; 781 782 783 remove_subset_prefix( cffface->family_name ); 784 785 if ( dict->family_name ) 786 { 787 family_name = cff_index_get_sid_string( cff, 788 dict->family_name ); 789 if ( family_name ) 790 family = family_name; 791 } 792 793 /* We try to extract the style name from the full name. */ 794 /* We need to ignore spaces and dashes during the search. */ 795 if ( full && family ) 796 { 797 while ( *fullp ) 798 { 799 /* skip common characters at the start of both strings */ 800 if ( *fullp == *family ) 801 { 802 family++; 803 fullp++; 804 continue; 805 } 806 807 /* ignore spaces and dashes in full name during comparison */ 808 if ( *fullp == ' ' || *fullp == '-' ) 809 { 810 fullp++; 811 continue; 812 } 813 814 /* ignore spaces and dashes in family name during comparison */ 815 if ( *family == ' ' || *family == '-' ) 816 { 817 family++; 818 continue; 819 } 820 821 if ( !*family && *fullp ) 822 { 823 /* The full name begins with the same characters as the */ 824 /* family name, with spaces and dashes removed. In this */ 825 /* case, the remaining string in `fullp' will be used as */ 826 /* the style name. */ 827 style_name = cff_strcpy( memory, fullp ); 828 829 /* remove the style part from the family name (if present) */ 830 remove_style( cffface->family_name, style_name ); 831 } 832 break; 833 } 834 } 835 } 836 else 837 { 838 char *cid_font_name = 839 cff_index_get_sid_string( cff, 840 dict->cid_font_name ); 841 842 843 /* do we have a `/FontName' for a CID-keyed font? */ 844 if ( cid_font_name ) 845 cffface->family_name = cff_strcpy( memory, cid_font_name ); 846 } 847 848 if ( style_name ) 849 cffface->style_name = style_name; 850 else 851 /* assume "Regular" style if we don't know better */ 852 cffface->style_name = cff_strcpy( memory, (char *)"Regular" ); 853 854 /*******************************************************************/ 855 /* */ 856 /* Compute face flags. */ 857 /* */ 858 flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */ 859 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ 860 FT_FACE_FLAG_HINTER; /* has native hinter */ 861 862 if ( sfnt_format ) 863 flags |= FT_FACE_FLAG_SFNT; 864 865 /* fixed width font? */ 866 if ( dict->is_fixed_pitch ) 867 flags |= FT_FACE_FLAG_FIXED_WIDTH; 868 869 /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */ 870 #if 0 871 /* kerning available? */ 872 if ( face->kern_pairs ) 873 flags |= FT_FACE_FLAG_KERNING; 874 #endif 875 876 cffface->face_flags = flags; 877 878 /*******************************************************************/ 879 /* */ 880 /* Compute style flags. */ 881 /* */ 882 flags = 0; 883 884 if ( dict->italic_angle ) 885 flags |= FT_STYLE_FLAG_ITALIC; 886 887 { 888 char *weight = cff_index_get_sid_string( cff, 889 dict->weight ); 890 891 892 if ( weight ) 893 if ( !ft_strcmp( weight, "Bold" ) || 894 !ft_strcmp( weight, "Black" ) ) 895 flags |= FT_STYLE_FLAG_BOLD; 896 } 897 898 /* double check */ 899 if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name ) 900 if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) || 901 !ft_strncmp( cffface->style_name, "Black", 5 ) ) 902 flags |= FT_STYLE_FLAG_BOLD; 903 904 cffface->style_flags = flags; 905 } 906 907 908 #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES 909 /* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */ 910 /* has unset this flag because of the 3.0 `post' table. */ 911 if ( dict->cid_registry == 0xFFFFU ) 912 cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; 913 #endif 914 915 if ( dict->cid_registry != 0xFFFFU && pure_cff ) 916 cffface->face_flags |= FT_FACE_FLAG_CID_KEYED; 917 918 919 /*******************************************************************/ 920 /* */ 921 /* Compute char maps. */ 922 /* */ 923 924 /* Try to synthesize a Unicode charmap if there is none available */ 925 /* already. If an OpenType font contains a Unicode "cmap", we */ 926 /* will use it, whatever be in the CFF part of the file. */ 927 { 928 FT_CharMapRec cmaprec; 929 FT_CharMap cmap; 930 FT_UInt nn; 931 CFF_Encoding encoding = &cff->encoding; 932 933 934 for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ ) 935 { 936 cmap = cffface->charmaps[nn]; 937 938 /* Windows Unicode? */ 939 if ( cmap->platform_id == TT_PLATFORM_MICROSOFT && 940 cmap->encoding_id == TT_MS_ID_UNICODE_CS ) 941 goto Skip_Unicode; 942 943 /* Apple Unicode platform id? */ 944 if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE ) 945 goto Skip_Unicode; /* Apple Unicode */ 946 } 947 948 /* since CID-keyed fonts don't contain glyph names, we can't */ 949 /* construct a cmap */ 950 if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU ) 951 goto Exit; 952 953 #ifdef FT_MAX_CHARMAP_CACHEABLE 954 if ( nn + 1 > FT_MAX_CHARMAP_CACHEABLE ) 955 { 956 FT_ERROR(( "cff_face_init: no Unicode cmap is found, " 957 "and too many subtables (%d) to add synthesized cmap\n", 958 nn )); 959 goto Exit; 960 } 961 #endif 962 963 /* we didn't find a Unicode charmap -- synthesize one */ 964 cmaprec.face = cffface; 965 cmaprec.platform_id = TT_PLATFORM_MICROSOFT; 966 cmaprec.encoding_id = TT_MS_ID_UNICODE_CS; 967 cmaprec.encoding = FT_ENCODING_UNICODE; 968 969 nn = (FT_UInt)cffface->num_charmaps; 970 971 error = FT_CMap_New( &FT_CFF_CMAP_UNICODE_CLASS_REC_GET, NULL, 972 &cmaprec, NULL ); 973 if ( error && FT_Err_No_Unicode_Glyph_Name != error ) 974 goto Exit; 975 error = FT_Err_Ok; 976 977 /* if no Unicode charmap was previously selected, select this one */ 978 if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps ) 979 cffface->charmap = cffface->charmaps[nn]; 980 981 Skip_Unicode: 982 #ifdef FT_MAX_CHARMAP_CACHEABLE 983 if ( nn > FT_MAX_CHARMAP_CACHEABLE ) 984 { 985 FT_ERROR(( "cff_face_init: Unicode cmap is found, " 986 "but too many preceding subtables (%d) to access\n", 987 nn - 1 )); 988 goto Exit; 989 } 990 #endif 991 if ( encoding->count > 0 ) 992 { 993 FT_CMap_Class clazz; 994 995 996 cmaprec.face = cffface; 997 cmaprec.platform_id = TT_PLATFORM_ADOBE; /* Adobe platform id */ 998 999 if ( encoding->offset == 0 ) 1000 { 1001 cmaprec.encoding_id = TT_ADOBE_ID_STANDARD; 1002 cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD; 1003 clazz = &FT_CFF_CMAP_ENCODING_CLASS_REC_GET; 1004 } 1005 else if ( encoding->offset == 1 ) 1006 { 1007 cmaprec.encoding_id = TT_ADOBE_ID_EXPERT; 1008 cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT; 1009 clazz = &FT_CFF_CMAP_ENCODING_CLASS_REC_GET; 1010 } 1011 else 1012 { 1013 cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM; 1014 cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM; 1015 clazz = &FT_CFF_CMAP_ENCODING_CLASS_REC_GET; 1016 } 1017 1018 error = FT_CMap_New( clazz, NULL, &cmaprec, NULL ); 1019 } 1020 } 1021 } 1022 1023 Exit: 1024 return error; 1025 } 1026 1027 1028 FT_LOCAL_DEF( void ) 1029 cff_face_done( FT_Face cffface ) /* CFF_Face */ 1030 { 1031 CFF_Face face = (CFF_Face)cffface; 1032 FT_Memory memory; 1033 SFNT_Service sfnt; 1034 1035 1036 if ( !face ) 1037 return; 1038 1039 memory = cffface->memory; 1040 sfnt = (SFNT_Service)face->sfnt; 1041 1042 if ( sfnt ) 1043 sfnt->done_face( face ); 1044 1045 { 1046 CFF_Font cff = (CFF_Font)face->extra.data; 1047 1048 1049 if ( cff ) 1050 { 1051 cff_font_done( cff ); 1052 FT_FREE( face->extra.data ); 1053 } 1054 } 1055 } 1056 1057 1058 FT_LOCAL_DEF( FT_Error ) 1059 cff_driver_init( FT_Module module ) 1060 { 1061 FT_UNUSED( module ); 1062 1063 return CFF_Err_Ok; 1064 } 1065 1066 1067 FT_LOCAL_DEF( void ) 1068 cff_driver_done( FT_Module module ) 1069 { 1070 FT_UNUSED( module ); 1071 } 1072 1073 1074 /* END */ 1075
