1 /***************************************************************************/ 2 /* */ 3 /* cffobjs.c */ 4 /* */ 5 /* OpenType objects manager (body). */ 6 /* */ 7 /* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, */ 8 /* 2010 by */ 9 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ 10 /* */ 11 /* This file is part of the FreeType project, and may only be used, */ 12 /* modified, and distributed under the terms of the FreeType project */ 13 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 14 /* this file you indicate that you have read the license and */ 15 /* understand and accept it fully. */ 16 /* */ 17 /***************************************************************************/ 18 19 20 #include <ft2build.h> 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 "cffobjs.h" 29 #include "cffload.h" 30 #include "cffcmap.h" 31 #include "cfferrs.h" 32 #include "cffpic.h" 33 34 35 /*************************************************************************/ 36 /* */ 37 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 38 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 39 /* messages during execution. */ 40 /* */ 41 #undef FT_COMPONENT 42 #define FT_COMPONENT trace_cffobjs 43 44 45 /*************************************************************************/ 46 /* */ 47 /* SIZE FUNCTIONS */ 48 /* */ 49 /* Note that we store the global hints in the size's `internal' root */ 50 /* field. */ 51 /* */ 52 /*************************************************************************/ 53 54 55 static PSH_Globals_Funcs 56 cff_size_get_globals_funcs( CFF_Size size ) 57 { 58 CFF_Face face = (CFF_Face)size->root.face; 59 CFF_Font font = (CFF_Font)face->extra.data; 60 PSHinter_Service pshinter = font->pshinter; 61 FT_Module module; 62 63 64 module = FT_Get_Module( size->root.face->driver->root.library, 65 "pshinter" ); 66 return ( module && pshinter && pshinter->get_globals_funcs ) 67 ? pshinter->get_globals_funcs( module ) 68 : 0; 69 } 70 71 72 FT_LOCAL_DEF( void ) 73 cff_size_done( FT_Size cffsize ) /* CFF_Size */ 74 { 75 CFF_Size size = (CFF_Size)cffsize; 76 CFF_Face face = (CFF_Face)size->root.face; 77 CFF_Font font = (CFF_Font)face->extra.data; 78 CFF_Internal internal = (CFF_Internal)cffsize->internal; 79 80 81 if ( internal ) 82 { 83 PSH_Globals_Funcs funcs; 84 85 86 funcs = cff_size_get_globals_funcs( size ); 87 if ( funcs ) 88 { 89 FT_UInt i; 90 91 92 funcs->destroy( internal->topfont ); 93 94 for ( i = font->num_subfonts; i > 0; i-- ) 95 funcs->destroy( internal->subfonts[i - 1] ); 96 } 97 98 /* `internal' is freed by destroy_size (in ftobjs.c) */ 99 } 100 } 101 102 103 /* CFF and Type 1 private dictionaries have slightly different */ 104 /* structures; we need to synthesize a Type 1 dictionary on the fly */ 105 106 static void 107 cff_make_private_dict( CFF_SubFont subfont, 108 PS_Private priv ) 109 { 110 CFF_Private cpriv = &subfont->private_dict; 111 FT_UInt n, count; 112 113 114 FT_MEM_ZERO( priv, sizeof ( *priv ) ); 115 116 count = priv->num_blue_values = cpriv->num_blue_values; 117 for ( n = 0; n < count; n++ ) 118 priv->blue_values[n] = (FT_Short)cpriv->blue_values[n]; 119 120 count = priv->num_other_blues = cpriv->num_other_blues; 121 for ( n = 0; n < count; n++ ) 122 priv->other_blues[n] = (FT_Short)cpriv->other_blues[n]; 123 124 count = priv->num_family_blues = cpriv->num_family_blues; 125 for ( n = 0; n < count; n++ ) 126 priv->family_blues[n] = (FT_Short)cpriv->family_blues[n]; 127 128 count = priv->num_family_other_blues = cpriv->num_family_other_blues; 129 for ( n = 0; n < count; n++ ) 130 priv->family_other_blues[n] = (FT_Short)cpriv->family_other_blues[n]; 131 132 priv->blue_scale = cpriv->blue_scale; 133 priv->blue_shift = (FT_Int)cpriv->blue_shift; 134 priv->blue_fuzz = (FT_Int)cpriv->blue_fuzz; 135 136 priv->standard_width[0] = (FT_UShort)cpriv->standard_width; 137 priv->standard_height[0] = (FT_UShort)cpriv->standard_height; 138 139 count = priv->num_snap_widths = cpriv->num_snap_widths; 140 for ( n = 0; n < count; n++ ) 141 priv->snap_widths[n] = (FT_Short)cpriv->snap_widths[n]; 142 143 count = priv->num_snap_heights = cpriv->num_snap_heights; 144 for ( n = 0; n < count; n++ ) 145 priv->snap_heights[n] = (FT_Short)cpriv->snap_heights[n]; 146 147 priv->force_bold = cpriv->force_bold; 148 priv->language_group = cpriv->language_group; 149 priv->lenIV = cpriv->lenIV; 150 } 151 152 153 FT_LOCAL_DEF( FT_Error ) 154 cff_size_init( FT_Size cffsize ) /* CFF_Size */ 155 { 156 CFF_Size size = (CFF_Size)cffsize; 157 FT_Error error = CFF_Err_Ok; 158 PSH_Globals_Funcs funcs = cff_size_get_globals_funcs( size ); 159 160 161 if ( funcs ) 162 { 163 CFF_Face face = (CFF_Face)cffsize->face; 164 CFF_Font font = (CFF_Font)face->extra.data; 165 CFF_Internal internal; 166 167 PS_PrivateRec priv; 168 FT_Memory memory = cffsize->face->memory; 169 170 FT_UInt i; 171 172 173 if ( FT_NEW( internal ) ) 174 goto Exit; 175 176 cff_make_private_dict( &font->top_font, &priv ); 177 error = funcs->create( cffsize->face->memory, &priv, 178 &internal->topfont ); 179 if ( error ) 180 goto Exit; 181 182 for ( i = font->num_subfonts; i > 0; i-- ) 183 { 184 CFF_SubFont sub = font->subfonts[i - 1]; 185 186 187 cff_make_private_dict( sub, &priv ); 188 error = funcs->create( cffsize->face->memory, &priv, 189 &internal->subfonts[i - 1] ); 190 if ( error ) 191 goto Exit; 192 } 193 194 cffsize->internal = (FT_Size_Internal)(void*)internal; 195 } 196 197 size->strike_index = 0xFFFFFFFFUL; 198 199 Exit: 200 return error; 201 } 202 203 204 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 205 206 FT_LOCAL_DEF( FT_Error ) 207 cff_size_select( FT_Size size, 208 FT_ULong strike_index ) 209 { 210 CFF_Size cffsize = (CFF_Size)size; 211 PSH_Globals_Funcs funcs; 212 213 214 cffsize->strike_index = strike_index; 215 216 FT_Select_Metrics( size->face, strike_index ); 217 218 funcs = cff_size_get_globals_funcs( cffsize ); 219 220 if ( funcs ) 221 { 222 CFF_Face face = (CFF_Face)size->face; 223 CFF_Font font = (CFF_Font)face->extra.data; 224 CFF_Internal internal = (CFF_Internal)size->internal; 225 226 FT_ULong top_upm = font->top_font.font_dict.units_per_em; 227 FT_UInt i; 228 229 230 funcs->set_scale( internal->topfont, 231 size->metrics.x_scale, size->metrics.y_scale, 232 0, 0 ); 233 234 for ( i = font->num_subfonts; i > 0; i-- ) 235 { 236 CFF_SubFont sub = font->subfonts[i - 1]; 237 FT_ULong sub_upm = sub->font_dict.units_per_em; 238 FT_Pos x_scale, y_scale; 239 240 241 if ( top_upm != sub_upm ) 242 { 243 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); 244 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); 245 } 246 else 247 { 248 x_scale = size->metrics.x_scale; 249 y_scale = size->metrics.y_scale; 250 } 251 252 funcs->set_scale( internal->subfonts[i - 1], 253 x_scale, y_scale, 0, 0 ); 254 } 255 } 256 257 return CFF_Err_Ok; 258 } 259 260 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ 261 262 263 FT_LOCAL_DEF( FT_Error ) 264 cff_size_request( FT_Size size, 265 FT_Size_Request req ) 266 { 267 CFF_Size cffsize = (CFF_Size)size; 268 PSH_Globals_Funcs funcs; 269 270 271 #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS 272 273 if ( FT_HAS_FIXED_SIZES( size->face ) ) 274 { 275 CFF_Face cffface = (CFF_Face)size->face; 276 SFNT_Service sfnt = (SFNT_Service)cffface->sfnt; 277 FT_ULong strike_index; 278 279 280 if ( sfnt->set_sbit_strike( cffface, req, &strike_index ) ) 281 cffsize->strike_index = 0xFFFFFFFFUL; 282 else 283 return cff_size_select( size, strike_index ); 284 } 285 286 #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ 287 288 FT_Request_Metrics( size->face, req ); 289 290 funcs = cff_size_get_globals_funcs( cffsize ); 291 292 if ( funcs ) 293 { 294 CFF_Face cffface = (CFF_Face)size->face; 295 CFF_Font font = (CFF_Font)cffface->extra.data; 296 CFF_Internal internal = (CFF_Internal)size->internal; 297 298 FT_ULong top_upm = font->top_font.font_dict.units_per_em; 299 FT_UInt i; 300 301 302 funcs->set_scale( internal->topfont, 303 size->metrics.x_scale, size->metrics.y_scale, 304 0, 0 ); 305 306 for ( i = font->num_subfonts; i > 0; i-- ) 307 { 308 CFF_SubFont sub = font->subfonts[i - 1]; 309 FT_ULong sub_upm = sub->font_dict.units_per_em; 310 FT_Pos x_scale, y_scale; 311 312 313 if ( top_upm != sub_upm ) 314 { 315 x_scale = FT_MulDiv( size->metrics.x_scale, top_upm, sub_upm ); 316 y_scale = FT_MulDiv( size->metrics.y_scale, top_upm, sub_upm ); 317 } 318 else 319 { 320 x_scale = size->metrics.x_scale; 321 y_scale = size->metrics.y_scale; 322 } 323 324 funcs->set_scale( internal->subfonts[i - 1], 325 x_scale, y_scale, 0, 0 ); 326 } 327 } 328 329 return CFF_Err_Ok; 330 } 331 332 333 /*************************************************************************/ 334 /* */ 335 /* SLOT FUNCTIONS */ 336 /* */ 337 /*************************************************************************/ 338 339 FT_LOCAL_DEF( void ) 340 cff_slot_done( FT_GlyphSlot slot ) 341 { 342 slot->internal->glyph_hints = 0; 343 } 344 345 346 FT_LOCAL_DEF( FT_Error ) 347 cff_slot_init( FT_GlyphSlot slot ) 348 { 349 CFF_Face face = (CFF_Face)slot->face; 350 CFF_Font font = (CFF_Font)face->extra.data; 351 PSHinter_Service pshinter = font->pshinter; 352 353 354 if ( pshinter ) 355 { 356 FT_Module module; 357 358 359 module = FT_Get_Module( slot->face->driver->root.library, 360 "pshinter" ); 361 if ( module ) 362 { 363 T2_Hints_Funcs funcs; 364 365 366 funcs = pshinter->get_t2_funcs( module ); 367 slot->internal->glyph_hints = (void*)funcs; 368 } 369 } 370 371 return CFF_Err_Ok; 372 } 373 374 375 /*************************************************************************/ 376 /* */ 377 /* FACE FUNCTIONS */ 378 /* */ 379 /*************************************************************************/ 380 381 static FT_String* 382 cff_strcpy( FT_Memory memory, 383 const FT_String* source ) 384 { 385 FT_Error error; 386 FT_String* result; 387 388 389 (void)FT_STRDUP( result, source ); 390 391 FT_UNUSED( error ); 392 393 return result; 394 } 395 396 397 /* Strip all subset prefixes of the form `ABCDEF+'. Usually, there */ 398 /* is only one, but font names like `APCOOG+JFABTD+FuturaBQ-Bold' */ 399 /* have been seen in the wild. */ 400 401 static void 402 remove_subset_prefix( FT_String* name ) 403 { 404 FT_Int32 idx = 0; 405 FT_Int32 length = strlen( name ) + 1; 406 FT_Bool continue_search = 1; 407 408 409 while ( continue_search ) 410 { 411 if ( length >= 7 && name[6] == '+' ) 412 { 413 for ( idx = 0; idx < 6; idx++ ) 414 { 415 /* ASCII uppercase letters */ 416 if ( !( 'A' <= name[idx] && name[idx] <= 'Z' ) ) 417 continue_search = 0; 418 } 419 420 if ( continue_search ) 421 { 422 for ( idx = 7; idx < length; idx++ ) 423 name[idx - 7] = name[idx]; 424 } 425 } 426 else 427 continue_search = 0; 428 } 429 } 430 431 432 FT_LOCAL_DEF( FT_Error ) 433 cff_face_init( FT_Stream stream, 434 FT_Face cffface, /* CFF_Face */ 435 FT_Int face_index, 436 FT_Int num_params, 437 FT_Parameter* params ) 438 { 439 CFF_Face face = (CFF_Face)cffface; 440 FT_Error error; 441 SFNT_Service sfnt; 442 FT_Service_PsCMaps psnames; 443 PSHinter_Service pshinter; 444 FT_Bool pure_cff = 1; 445 FT_Bool sfnt_format = 0; 446 FT_Library library = cffface->driver->root.library; 447 448 449 sfnt = (SFNT_Service)FT_Get_Module_Interface( 450 library, "sfnt" ); 451 if ( !sfnt ) 452 goto Bad_Format; 453 454 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); 455 456 pshinter = (PSHinter_Service)FT_Get_Module_Interface( 457 library, "pshinter" ); 458 459 /* create input stream from resource */ 460 if ( FT_STREAM_SEEK( 0 ) ) 461 goto Exit; 462 463 /* check whether we have a valid OpenType file */ 464 error = sfnt->init_face( stream, face, face_index, num_params, params ); 465 if ( !error ) 466 { 467 if ( face->format_tag != TTAG_OTTO ) /* `OTTO'; OpenType/CFF font */ 468 { 469 FT_TRACE2(( "[not a valid OpenType/CFF font]\n" )); 470 goto Bad_Format; 471 } 472 473 /* if we are performing a simple font format check, exit immediately */ 474 if ( face_index < 0 ) 475 return CFF_Err_Ok; 476 477 /* UNDOCUMENTED! A CFF in an SFNT can have only a single font. */ 478 if ( face_index > 0 ) 479 { 480 FT_ERROR(( "cff_face_init: invalid face index\n" )); 481 error = CFF_Err_Invalid_Argument; 482 goto Exit; 483 } 484 485 sfnt_format = 1; 486 487 /* now, the font can be either an OpenType/CFF font, or an SVG CEF */ 488 /* font; in the latter case it doesn't have a `head' table */ 489 error = face->goto_table( face, TTAG_head, stream, 0 ); 490 if ( !error ) 491 { 492 pure_cff = 0; 493 494 /* load font directory */ 495 error = sfnt->load_face( stream, face, 0, num_params, params ); 496 if ( error ) 497 goto Exit; 498 } 499 else 500 { 501 /* load the `cmap' table explicitly */ 502 error = sfnt->load_cmap( face, stream ); 503 if ( error ) 504 goto Exit; 505 506 /* XXX: we don't load the GPOS table, as OpenType Layout */ 507 /* support will be added later to a layout library on top of */ 508 /* FreeType 2 */ 509 } 510 511 /* now load the CFF part of the file */ 512 error = face->goto_table( face, TTAG_CFF, stream, 0 ); 513 if ( error ) 514 goto Exit; 515 } 516 else 517 { 518 /* rewind to start of file; we are going to load a pure-CFF font */ 519 if ( FT_STREAM_SEEK( 0 ) ) 520 goto Exit; 521 error = CFF_Err_Ok; 522 } 523 524 /* now load and parse the CFF table in the file */ 525 { 526 CFF_Font cff; 527 CFF_FontRecDict dict; 528 FT_Memory memory = cffface->memory; 529 FT_Int32 flags; 530 FT_UInt i; 531 532 533 if ( FT_NEW( cff ) ) 534 goto Exit; 535 536 face->extra.data = cff; 537 error = cff_font_load( library, stream, face_index, cff, pure_cff ); 538 if ( error ) 539 goto Exit; 540 541 cff->pshinter = pshinter; 542 cff->psnames = psnames; 543 544 cffface->face_index = face_index; 545 546 /* Complement the root flags with some interesting information. */ 547 /* Note that this is only necessary for pure CFF and CEF fonts; */ 548 /* SFNT based fonts use the `name' table instead. */ 549 550 cffface->num_glyphs = cff->num_glyphs; 551 552 dict = &cff->top_font.font_dict; 553 554 /* we need the `PSNames' module for CFF and CEF formats */ 555 /* which aren't CID-keyed */ 556 if ( dict->cid_registry == 0xFFFFU && !psnames ) 557 { 558 FT_ERROR(( "cff_face_init:" 559 " cannot open CFF & CEF fonts\n" 560 " " 561 " without the `PSNames' module\n" )); 562 goto Bad_Format; 563 } 564 565 if ( !dict->units_per_em ) 566 dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM; 567 568 /* Normalize the font matrix so that `matrix->xx' is 1; the */ 569 /* scaling is done with `units_per_em' then (at this point, */ 570 /* it already contains the scaling factor, but without */ 571 /* normalization of the matrix). */ 572 /* */ 573 /* Note that the offsets must be expressed in integer font */ 574 /* units. */ 575 576 { 577 FT_Matrix* matrix = &dict->font_matrix; 578 FT_Vector* offset = &dict->font_offset; 579 FT_ULong* upm = &dict->units_per_em; 580 FT_Fixed temp = FT_ABS( matrix->yy ); 581 582 583 if ( temp != 0x10000L ) 584 { 585 *upm = FT_DivFix( *upm, temp ); 586 587 matrix->xx = FT_DivFix( matrix->xx, temp ); 588 matrix->yx = FT_DivFix( matrix->yx, temp ); 589 matrix->xy = FT_DivFix( matrix->xy, temp ); 590 matrix->yy = FT_DivFix( matrix->yy, temp ); 591 offset->x = FT_DivFix( offset->x, temp ); 592 offset->y = FT_DivFix( offset->y, temp ); 593 } 594 595 offset->x >>= 16; 596 offset->y >>= 16; 597 } 598 599 for ( i = cff->num_subfonts; i > 0; i-- ) 600 { 601 CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict; 602 CFF_FontRecDict top = &cff->top_font.font_dict; 603 604 FT_Matrix* matrix; 605 FT_Vector* offset; 606 FT_ULong* upm; 607 FT_Fixed temp; 608 609 610 if ( sub->units_per_em ) 611 { 612 FT_Long scaling; 613 614 615 if ( top->units_per_em > 1 && sub->units_per_em > 1 ) 616 scaling = FT_MIN( top->units_per_em, sub->units_per_em ); 617 else 618 scaling = 1; 619 620 FT_Matrix_Multiply_Scaled( &top->font_matrix, 621 &sub->font_matrix, 622 scaling ); 623 FT_Vector_Transform_Scaled( &sub->font_offset, 624 &top->font_matrix, 625 scaling ); 626 627 sub->units_per_em = FT_MulDiv( sub->units_per_em, 628 top->units_per_em, 629 scaling ); 630 } 631 else 632 { 633 sub->font_matrix = top->font_matrix; 634 sub->font_offset = top->font_offset; 635 636 sub->units_per_em = top->units_per_em; 637 } 638 639 matrix = &sub->font_matrix; 640 offset = &sub->font_offset; 641 upm = &sub->units_per_em; 642 temp = FT_ABS( matrix->yy ); 643 644 if ( temp != 0x10000L ) 645 { 646 *upm = FT_DivFix( *upm, temp ); 647 648 /* if *upm is larger than 100*1000 we divide by 1000 -- */ 649 /* this can happen if e.g. there is no top-font FontMatrix */ 650 /* and the subfont FontMatrix already contains the complete */ 651 /* scaling for the subfont (see section 5.11 of the PLRM) */ 652 653 /* 100 is a heuristic value */ 654 655 if ( *upm > 100L * 1000L ) 656 *upm = ( *upm + 500 ) / 1000; 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 if ( pure_cff ) 671 { 672 char* style_name = NULL; 673 674 675 /* set up num_faces */ 676 cffface->num_faces = cff->num_faces; 677 678 /* compute number of glyphs */ 679 if ( dict->cid_registry != 0xFFFFU ) 680 cffface->num_glyphs = cff->charset.max_cid; 681 else 682 cffface->num_glyphs = cff->charstrings_index.count; 683 684 /* set global bbox, as well as EM size */ 685 cffface->bbox.xMin = dict->font_bbox.xMin >> 16; 686 cffface->bbox.yMin = dict->font_bbox.yMin >> 16; 687 /* no `U' suffix here to 0xFFFF! */ 688 cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16; 689 cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16; 690 691 cffface->units_per_EM = (FT_UShort)( dict->units_per_em ); 692 693 cffface->ascender = (FT_Short)( cffface->bbox.yMax ); 694 cffface->descender = (FT_Short)( cffface->bbox.yMin ); 695 696 cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 ); 697 if ( cffface->height < cffface->ascender - cffface->descender ) 698 cffface->height = (FT_Short)( cffface->ascender - cffface->descender ); 699 700 cffface->underline_position = 701 (FT_Short)( dict->underline_position >> 16 ); 702 cffface->underline_thickness = 703 (FT_Short)( dict->underline_thickness >> 16 ); 704 705 /* retrieve font family & style name */ 706 cffface->family_name = cff_index_get_name( cff, face_index ); 707 if ( cffface->family_name ) 708 { 709 char* full = cff_index_get_sid_string( cff, 710 dict->full_name ); 711 char* fullp = full; 712 char* family = cffface->family_name; 713 char* family_name = NULL; 714 715 716 remove_subset_prefix( cffface->family_name ); 717 718 if ( dict->family_name ) 719 { 720 family_name = cff_index_get_sid_string( cff, 721 dict->family_name ); 722 if ( family_name ) 723 family = family_name; 724 } 725 726 /* We try to extract the style name from the full name. */ 727 /* We need to ignore spaces and dashes during the search. */ 728 if ( full && family ) 729 { 730 while ( *fullp ) 731 { 732 /* skip common characters at the start of both strings */ 733 if ( *fullp == *family ) 734 { 735 family++; 736 fullp++; 737 continue; 738 } 739 740 /* ignore spaces and dashes in full name during comparison */ 741 if ( *fullp == ' ' || *fullp == '-' ) 742 { 743 fullp++; 744 continue; 745 } 746 747 /* ignore spaces and dashes in family name during comparison */ 748 if ( *family == ' ' || *family == '-' ) 749 { 750 family++; 751 continue; 752 } 753 754 if ( !*family && *fullp ) 755 { 756 /* The full name begins with the same characters as the */ 757 /* family name, with spaces and dashes removed. In this */ 758 /* case, the remaining string in `fullp' will be used as */ 759 /* the style name. */ 760 style_name = cff_strcpy( memory, fullp ); 761 } 762 break; 763 } 764 } 765 } 766 else 767 { 768 char *cid_font_name = 769 cff_index_get_sid_string( cff, 770 dict->cid_font_name ); 771 772 773 /* do we have a `/FontName' for a CID-keyed font? */ 774 if ( cid_font_name ) 775 cffface->family_name = cff_strcpy( memory, cid_font_name ); 776 } 777 778 if ( style_name ) 779 cffface->style_name = style_name; 780 else 781 /* assume "Regular" style if we don't know better */ 782 cffface->style_name = cff_strcpy( memory, (char *)"Regular" ); 783 784 /*******************************************************************/ 785 /* */ 786 /* Compute face flags. */ 787 /* */ 788 flags = (FT_UInt32)( FT_FACE_FLAG_SCALABLE | /* scalable outlines */ 789 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ 790 FT_FACE_FLAG_HINTER ); /* has native hinter */ 791 792 if ( sfnt_format ) 793 flags |= (FT_UInt32)FT_FACE_FLAG_SFNT; 794 795 /* fixed width font? */ 796 if ( dict->is_fixed_pitch ) 797 flags |= (FT_UInt32)FT_FACE_FLAG_FIXED_WIDTH; 798 799 /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */ 800 #if 0 801 /* kerning available? */ 802 if ( face->kern_pairs ) 803 flags |= (FT_UInt32)FT_FACE_FLAG_KERNING; 804 #endif 805 806 cffface->face_flags = flags; 807 808 /*******************************************************************/ 809 /* */ 810 /* Compute style flags. */ 811 /* */ 812 flags = 0; 813 814 if ( dict->italic_angle ) 815 flags |= FT_STYLE_FLAG_ITALIC; 816 817 { 818 char *weight = cff_index_get_sid_string( cff, 819 dict->weight ); 820 821 822 if ( weight ) 823 if ( !ft_strcmp( weight, "Bold" ) || 824 !ft_strcmp( weight, "Black" ) ) 825 flags |= FT_STYLE_FLAG_BOLD; 826 } 827 828 /* double check */ 829 if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name ) 830 if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) || 831 !ft_strncmp( cffface->style_name, "Black", 5 ) ) 832 flags |= FT_STYLE_FLAG_BOLD; 833 834 cffface->style_flags = flags; 835 } 836 837 838 #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES 839 /* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */ 840 /* has unset this flag because of the 3.0 `post' table. */ 841 if ( dict->cid_registry == 0xFFFFU ) 842 cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; 843 #endif 844 845 if ( dict->cid_registry != 0xFFFFU && pure_cff ) 846 cffface->face_flags |= FT_FACE_FLAG_CID_KEYED; 847 848 849 /*******************************************************************/ 850 /* */ 851 /* Compute char maps. */ 852 /* */ 853 854 /* Try to synthesize a Unicode charmap if there is none available */ 855 /* already. If an OpenType font contains a Unicode "cmap", we */ 856 /* will use it, whatever be in the CFF part of the file. */ 857 { 858 FT_CharMapRec cmaprec; 859 FT_CharMap cmap; 860 FT_UInt nn; 861 CFF_Encoding encoding = &cff->encoding; 862 863 864 for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ ) 865 { 866 cmap = cffface->charmaps[nn]; 867 868 /* Windows Unicode? */ 869 if ( cmap->platform_id == TT_PLATFORM_MICROSOFT && 870 cmap->encoding_id == TT_MS_ID_UNICODE_CS ) 871 goto Skip_Unicode; 872 873 /* Apple Unicode platform id? */ 874 if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE ) 875 goto Skip_Unicode; /* Apple Unicode */ 876 } 877 878 /* since CID-keyed fonts don't contain glyph names, we can't */ 879 /* construct a cmap */ 880 if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU ) 881 goto Exit; 882 883 #ifdef FT_MAX_CHARMAP_CACHEABLE 884 if ( nn + 1 > FT_MAX_CHARMAP_CACHEABLE ) 885 { 886 FT_ERROR(( "cff_face_init: no Unicode cmap is found, " 887 "and too many subtables (%d) to add synthesized cmap\n", 888 nn )); 889 goto Exit; 890 } 891 #endif 892 893 /* we didn't find a Unicode charmap -- synthesize one */ 894 cmaprec.face = cffface; 895 cmaprec.platform_id = TT_PLATFORM_MICROSOFT; 896 cmaprec.encoding_id = TT_MS_ID_UNICODE_CS; 897 cmaprec.encoding = FT_ENCODING_UNICODE; 898 899 nn = (FT_UInt)cffface->num_charmaps; 900 901 error = FT_CMap_New( &FT_CFF_CMAP_UNICODE_CLASS_REC_GET, NULL, 902 &cmaprec, NULL ); 903 if ( error && FT_Err_No_Unicode_Glyph_Name != error ) 904 goto Exit; 905 error = FT_Err_Ok; 906 907 /* if no Unicode charmap was previously selected, select this one */ 908 if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps ) 909 cffface->charmap = cffface->charmaps[nn]; 910 911 Skip_Unicode: 912 #ifdef FT_MAX_CHARMAP_CACHEABLE 913 if ( nn > FT_MAX_CHARMAP_CACHEABLE ) 914 { 915 FT_ERROR(( "cff_face_init: Unicode cmap is found, " 916 "but too many preceding subtables (%d) to access\n", 917 nn - 1 )); 918 goto Exit; 919 } 920 #endif 921 if ( encoding->count > 0 ) 922 { 923 FT_CMap_Class clazz; 924 925 926 cmaprec.face = cffface; 927 cmaprec.platform_id = TT_PLATFORM_ADOBE; /* Adobe platform id */ 928 929 if ( encoding->offset == 0 ) 930 { 931 cmaprec.encoding_id = TT_ADOBE_ID_STANDARD; 932 cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD; 933 clazz = &FT_CFF_CMAP_ENCODING_CLASS_REC_GET; 934 } 935 else if ( encoding->offset == 1 ) 936 { 937 cmaprec.encoding_id = TT_ADOBE_ID_EXPERT; 938 cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT; 939 clazz = &FT_CFF_CMAP_ENCODING_CLASS_REC_GET; 940 } 941 else 942 { 943 cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM; 944 cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM; 945 clazz = &FT_CFF_CMAP_ENCODING_CLASS_REC_GET; 946 } 947 948 error = FT_CMap_New( clazz, NULL, &cmaprec, NULL ); 949 } 950 } 951 } 952 953 Exit: 954 return error; 955 956 Bad_Format: 957 error = CFF_Err_Unknown_File_Format; 958 goto Exit; 959 } 960 961 962 FT_LOCAL_DEF( void ) 963 cff_face_done( FT_Face cffface ) /* CFF_Face */ 964 { 965 CFF_Face face = (CFF_Face)cffface; 966 FT_Memory memory; 967 SFNT_Service sfnt; 968 969 970 if ( !face ) 971 return; 972 973 memory = cffface->memory; 974 sfnt = (SFNT_Service)face->sfnt; 975 976 if ( sfnt ) 977 sfnt->done_face( face ); 978 979 { 980 CFF_Font cff = (CFF_Font)face->extra.data; 981 982 983 if ( cff ) 984 { 985 cff_font_done( cff ); 986 FT_FREE( face->extra.data ); 987 } 988 } 989 } 990 991 992 FT_LOCAL_DEF( FT_Error ) 993 cff_driver_init( FT_Module module ) 994 { 995 FT_UNUSED( module ); 996 997 return CFF_Err_Ok; 998 } 999 1000 1001 FT_LOCAL_DEF( void ) 1002 cff_driver_done( FT_Module module ) 1003 { 1004 FT_UNUSED( module ); 1005 } 1006 1007 1008 /* END */ 1009
