cffobjs.c revision 77f63d23f7d380b0ff02c18fd6a154ab9063128a
1/***************************************************************************/ 2/* */ 3/* cffobjs.c */ 4/* */ 5/* OpenType objects manager (body). */ 6/* */ 7/* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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 FT_SERVICE_POSTSCRIPT_CMAPS_H 28#include FT_INTERNAL_POSTSCRIPT_HINTS_H 29#include "cffobjs.h" 30#include "cffload.h" 31#include "cffcmap.h" 32#include "cfferrs.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 = (PSHinter_Service)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_Int 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_Int 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_Int 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_Int 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 = (PSHinter_Service)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 FT_LOCAL_DEF( FT_Error ) 398 cff_face_init( FT_Stream stream, 399 FT_Face cffface, /* CFF_Face */ 400 FT_Int face_index, 401 FT_Int num_params, 402 FT_Parameter* params ) 403 { 404 CFF_Face face = (CFF_Face)cffface; 405 FT_Error error; 406 SFNT_Service sfnt; 407 FT_Service_PsCMaps psnames; 408 PSHinter_Service pshinter; 409 FT_Bool pure_cff = 1; 410 FT_Bool sfnt_format = 0; 411 412 413#if 0 414 FT_FACE_FIND_GLOBAL_SERVICE( face, sfnt, SFNT ); 415 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_NAMES ); 416 FT_FACE_FIND_GLOBAL_SERVICE( face, pshinter, POSTSCRIPT_HINTER ); 417 418 if ( !sfnt ) 419 goto Bad_Format; 420#else 421 sfnt = (SFNT_Service)FT_Get_Module_Interface( 422 cffface->driver->root.library, "sfnt" ); 423 if ( !sfnt ) 424 goto Bad_Format; 425 426 FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS ); 427 428 pshinter = (PSHinter_Service)FT_Get_Module_Interface( 429 cffface->driver->root.library, "pshinter" ); 430#endif 431 432 /* create input stream from resource */ 433 if ( FT_STREAM_SEEK( 0 ) ) 434 goto Exit; 435 436 /* check whether we have a valid OpenType file */ 437 error = sfnt->init_face( stream, face, face_index, num_params, params ); 438 if ( !error ) 439 { 440 if ( face->format_tag != TTAG_OTTO ) /* `OTTO'; OpenType/CFF font */ 441 { 442 FT_TRACE2(( "[not a valid OpenType/CFF font]\n" )); 443 goto Bad_Format; 444 } 445 446 /* if we are performing a simple font format check, exit immediately */ 447 if ( face_index < 0 ) 448 return CFF_Err_Ok; 449 450 /* UNDOCUMENTED! A CFF in an SFNT can have only a single font. */ 451 if ( face_index > 0 ) 452 { 453 FT_ERROR(( "cff_face_init: invalid face index\n" )); 454 error = CFF_Err_Invalid_Argument; 455 goto Exit; 456 } 457 458 sfnt_format = 1; 459 460 /* now, the font can be either an OpenType/CFF font, or an SVG CEF */ 461 /* font; in the latter case it doesn't have a `head' table */ 462 error = face->goto_table( face, TTAG_head, stream, 0 ); 463 if ( !error ) 464 { 465 pure_cff = 0; 466 467 /* load font directory */ 468 error = sfnt->load_face( stream, face, 0, num_params, params ); 469 if ( error ) 470 goto Exit; 471 } 472 else 473 { 474 /* load the `cmap' table explicitly */ 475 error = sfnt->load_cmap( face, stream ); 476 if ( error ) 477 goto Exit; 478 479 /* XXX: we don't load the GPOS table, as OpenType Layout */ 480 /* support will be added later to a layout library on top of */ 481 /* FreeType 2 */ 482 } 483 484 /* now load the CFF part of the file */ 485 error = face->goto_table( face, TTAG_CFF, stream, 0 ); 486 if ( error ) 487 goto Exit; 488 } 489 else 490 { 491 /* rewind to start of file; we are going to load a pure-CFF font */ 492 if ( FT_STREAM_SEEK( 0 ) ) 493 goto Exit; 494 error = CFF_Err_Ok; 495 } 496 497 /* now load and parse the CFF table in the file */ 498 { 499 CFF_Font cff; 500 CFF_FontRecDict dict; 501 FT_Memory memory = cffface->memory; 502 FT_Int32 flags; 503 FT_UInt i; 504 505 506 if ( FT_NEW( cff ) ) 507 goto Exit; 508 509 face->extra.data = cff; 510 error = cff_font_load( stream, face_index, cff, pure_cff ); 511 if ( error ) 512 goto Exit; 513 514 cff->pshinter = pshinter; 515 cff->psnames = (void*)psnames; 516 517 cffface->face_index = face_index; 518 519 /* Complement the root flags with some interesting information. */ 520 /* Note that this is only necessary for pure CFF and CEF fonts; */ 521 /* SFNT based fonts use the `name' table instead. */ 522 523 cffface->num_glyphs = cff->num_glyphs; 524 525 dict = &cff->top_font.font_dict; 526 527 /* we need the `PSNames' module for CFF and CEF formats */ 528 /* which aren't CID-keyed */ 529 if ( dict->cid_registry == 0xFFFFU && !psnames ) 530 { 531 FT_ERROR(( "cff_face_init:" )); 532 FT_ERROR(( " cannot open CFF & CEF fonts\n" )); 533 FT_ERROR(( " " )); 534 FT_ERROR(( " without the `PSNames' module\n" )); 535 goto Bad_Format; 536 } 537 538 if ( !dict->units_per_em ) 539 dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM; 540 541 /* Normalize the font matrix so that `matrix->xx' is 1; the */ 542 /* scaling is done with `units_per_em' then (at this point, */ 543 /* it already contains the scaling factor, but without */ 544 /* normalization of the matrix). */ 545 /* */ 546 /* Note that the offsets must be expressed in integer font */ 547 /* units. */ 548 549 { 550 FT_Matrix* matrix = &dict->font_matrix; 551 FT_Vector* offset = &dict->font_offset; 552 FT_ULong* upm = &dict->units_per_em; 553 FT_Fixed temp = FT_ABS( matrix->yy ); 554 555 556 if ( temp != 0x10000L ) 557 { 558 *upm = FT_DivFix( *upm, temp ); 559 560 matrix->xx = FT_DivFix( matrix->xx, temp ); 561 matrix->yx = FT_DivFix( matrix->yx, temp ); 562 matrix->xy = FT_DivFix( matrix->xy, temp ); 563 matrix->yy = FT_DivFix( matrix->yy, temp ); 564 offset->x = FT_DivFix( offset->x, temp ); 565 offset->y = FT_DivFix( offset->y, temp ); 566 } 567 568 offset->x >>= 16; 569 offset->y >>= 16; 570 } 571 572 for ( i = cff->num_subfonts; i > 0; i-- ) 573 { 574 CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict; 575 CFF_FontRecDict top = &cff->top_font.font_dict; 576 577 FT_Matrix* matrix; 578 FT_Vector* offset; 579 FT_ULong* upm; 580 FT_Fixed temp; 581 582 583 if ( sub->units_per_em ) 584 { 585 FT_Int scaling; 586 587 588 if ( top->units_per_em > 1 && sub->units_per_em > 1 ) 589 scaling = FT_MIN( top->units_per_em, sub->units_per_em ); 590 else 591 scaling = 1; 592 593 FT_Matrix_Multiply_Scaled( &top->font_matrix, 594 &sub->font_matrix, 595 scaling ); 596 FT_Vector_Transform_Scaled( &sub->font_offset, 597 &top->font_matrix, 598 scaling ); 599 600 sub->units_per_em = FT_MulDiv( sub->units_per_em, 601 top->units_per_em, 602 scaling ); 603 } 604 else 605 { 606 sub->font_matrix = top->font_matrix; 607 sub->font_offset = top->font_offset; 608 609 sub->units_per_em = top->units_per_em; 610 } 611 612 matrix = &sub->font_matrix; 613 offset = &sub->font_offset; 614 upm = &sub->units_per_em; 615 temp = FT_ABS( matrix->yy ); 616 617 if ( temp != 0x10000L ) 618 { 619 *upm = FT_DivFix( *upm, temp ); 620 621 /* if *upm is larger than 100*1000 we divide by 1000 -- */ 622 /* this can happen if e.g. there is no top-font FontMatrix */ 623 /* and the subfont FontMatrix already contains the complete */ 624 /* scaling for the subfont (see section 5.11 of the PLRM) */ 625 626 /* 100 is a heuristic value */ 627 628 if ( *upm > 100L * 1000L ) 629 *upm = ( *upm + 500 ) / 1000; 630 631 matrix->xx = FT_DivFix( matrix->xx, temp ); 632 matrix->yx = FT_DivFix( matrix->yx, temp ); 633 matrix->xy = FT_DivFix( matrix->xy, temp ); 634 matrix->yy = FT_DivFix( matrix->yy, temp ); 635 offset->x = FT_DivFix( offset->x, temp ); 636 offset->y = FT_DivFix( offset->y, temp ); 637 } 638 639 offset->x >>= 16; 640 offset->y >>= 16; 641 } 642 643 if ( pure_cff ) 644 { 645 char* style_name = NULL; 646 647 648 /* set up num_faces */ 649 cffface->num_faces = cff->num_faces; 650 651 /* compute number of glyphs */ 652 if ( dict->cid_registry != 0xFFFFU ) 653 cffface->num_glyphs = cff->charset.max_cid; 654 else 655 cffface->num_glyphs = cff->charstrings_index.count; 656 657 /* set global bbox, as well as EM size */ 658 cffface->bbox.xMin = dict->font_bbox.xMin >> 16; 659 cffface->bbox.yMin = dict->font_bbox.yMin >> 16; 660 cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFFU ) >> 16; 661 cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFFU ) >> 16; 662 663 cffface->units_per_EM = (FT_UShort)( dict->units_per_em ); 664 665 cffface->ascender = (FT_Short)( cffface->bbox.yMax ); 666 cffface->descender = (FT_Short)( cffface->bbox.yMin ); 667 668 cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 ); 669 if ( cffface->height < cffface->ascender - cffface->descender ) 670 cffface->height = (FT_Short)( cffface->ascender - cffface->descender ); 671 672 cffface->underline_position = 673 (FT_Short)( dict->underline_position >> 16 ); 674 cffface->underline_thickness = 675 (FT_Short)( dict->underline_thickness >> 16 ); 676 677 /* retrieve font family & style name */ 678 cffface->family_name = cff_index_get_name( &cff->name_index, 679 face_index ); 680 681 if ( cffface->family_name ) 682 { 683 char* full = cff_index_get_sid_string( &cff->string_index, 684 dict->full_name, 685 psnames ); 686 char* fullp = full; 687 char* family = cffface->family_name; 688 char* family_name = 0; 689 690 691 if ( dict->family_name ) 692 { 693 family_name = cff_index_get_sid_string( &cff->string_index, 694 dict->family_name, 695 psnames); 696 if ( family_name ) 697 family = family_name; 698 } 699 700 /* We try to extract the style name from the full name. */ 701 /* We need to ignore spaces and dashes during the search. */ 702 if ( full && family ) 703 { 704 while ( *fullp ) 705 { 706 /* skip common characters at the start of both strings */ 707 if ( *fullp == *family ) 708 { 709 family++; 710 fullp++; 711 continue; 712 } 713 714 /* ignore spaces and dashes in full name during comparison */ 715 if ( *fullp == ' ' || *fullp == '-' ) 716 { 717 fullp++; 718 continue; 719 } 720 721 /* ignore spaces and dashes in family name during comparison */ 722 if ( *family == ' ' || *family == '-' ) 723 { 724 family++; 725 continue; 726 } 727 728 if ( !*family && *fullp ) 729 { 730 /* The full name begins with the same characters as the */ 731 /* family name, with spaces and dashes removed. In this */ 732 /* case, the remaining string in `fullp' will be used as */ 733 /* the style name. */ 734 style_name = cff_strcpy( memory, fullp ); 735 } 736 break; 737 } 738 739 if ( family_name ) 740 FT_FREE( family_name ); 741 FT_FREE( full ); 742 } 743 } 744 else 745 { 746 char *cid_font_name = 747 cff_index_get_sid_string( &cff->string_index, 748 dict->cid_font_name, 749 psnames ); 750 751 752 /* do we have a `/FontName' for a CID-keyed font? */ 753 if ( cid_font_name ) 754 cffface->family_name = cid_font_name; 755 } 756 757 if ( style_name ) 758 cffface->style_name = style_name; 759 else 760 /* assume "Regular" style if we don't know better */ 761 cffface->style_name = cff_strcpy( memory, (char *)"Regular" ); 762 763 /*******************************************************************/ 764 /* */ 765 /* Compute face flags. */ 766 /* */ 767 flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */ 768 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ 769 FT_FACE_FLAG_HINTER; /* has native hinter */ 770 771 if ( sfnt_format ) 772 flags |= FT_FACE_FLAG_SFNT; 773 774 /* fixed width font? */ 775 if ( dict->is_fixed_pitch ) 776 flags |= FT_FACE_FLAG_FIXED_WIDTH; 777 778 /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */ 779#if 0 780 /* kerning available? */ 781 if ( face->kern_pairs ) 782 flags |= FT_FACE_FLAG_KERNING; 783#endif 784 785 cffface->face_flags = flags; 786 787 /*******************************************************************/ 788 /* */ 789 /* Compute style flags. */ 790 /* */ 791 flags = 0; 792 793 if ( dict->italic_angle ) 794 flags |= FT_STYLE_FLAG_ITALIC; 795 796 { 797 char *weight = cff_index_get_sid_string( &cff->string_index, 798 dict->weight, 799 psnames ); 800 801 802 if ( weight ) 803 if ( !ft_strcmp( weight, "Bold" ) || 804 !ft_strcmp( weight, "Black" ) ) 805 flags |= FT_STYLE_FLAG_BOLD; 806 FT_FREE( weight ); 807 } 808 809 /* double check */ 810 if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name ) 811 if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) || 812 !ft_strncmp( cffface->style_name, "Black", 5 ) ) 813 flags |= FT_STYLE_FLAG_BOLD; 814 815 cffface->style_flags = flags; 816 } 817 818 819#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES 820 /* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */ 821 /* has unset this flag because of the 3.0 `post' table. */ 822 if ( dict->cid_registry == 0xFFFFU ) 823 cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; 824#endif 825 826 if ( dict->cid_registry != 0xFFFFU && pure_cff ) 827 cffface->face_flags |= FT_FACE_FLAG_CID_KEYED; 828 829 830 /*******************************************************************/ 831 /* */ 832 /* Compute char maps. */ 833 /* */ 834 835 /* Try to synthesize a Unicode charmap if there is none available */ 836 /* already. If an OpenType font contains a Unicode "cmap", we */ 837 /* will use it, whatever be in the CFF part of the file. */ 838 { 839 FT_CharMapRec cmaprec; 840 FT_CharMap cmap; 841 FT_UInt nn; 842 CFF_Encoding encoding = &cff->encoding; 843 844 845 for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ ) 846 { 847 cmap = cffface->charmaps[nn]; 848 849 /* Windows Unicode (3,1)? */ 850 if ( cmap->platform_id == 3 && cmap->encoding_id == 1 ) 851 goto Skip_Unicode; 852 853 /* Deprecated Unicode platform id? */ 854 if ( cmap->platform_id == 0 ) 855 goto Skip_Unicode; /* Standard Unicode (deprecated) */ 856 } 857 858 /* since CID-keyed fonts don't contain glyph names, we can't */ 859 /* construct a cmap */ 860 if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU ) 861 goto Exit; 862 863 /* we didn't find a Unicode charmap -- synthesize one */ 864 cmaprec.face = cffface; 865 cmaprec.platform_id = 3; 866 cmaprec.encoding_id = 1; 867 cmaprec.encoding = FT_ENCODING_UNICODE; 868 869 nn = (FT_UInt)cffface->num_charmaps; 870 871 FT_CMap_New( &cff_cmap_unicode_class_rec, NULL, &cmaprec, NULL ); 872 873 /* if no Unicode charmap was previously selected, select this one */ 874 if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps ) 875 cffface->charmap = cffface->charmaps[nn]; 876 877 Skip_Unicode: 878 if ( encoding->count > 0 ) 879 { 880 FT_CMap_Class clazz; 881 882 883 cmaprec.face = cffface; 884 cmaprec.platform_id = 7; /* Adobe platform id */ 885 886 if ( encoding->offset == 0 ) 887 { 888 cmaprec.encoding_id = TT_ADOBE_ID_STANDARD; 889 cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD; 890 clazz = &cff_cmap_encoding_class_rec; 891 } 892 else if ( encoding->offset == 1 ) 893 { 894 cmaprec.encoding_id = TT_ADOBE_ID_EXPERT; 895 cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT; 896 clazz = &cff_cmap_encoding_class_rec; 897 } 898 else 899 { 900 cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM; 901 cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM; 902 clazz = &cff_cmap_encoding_class_rec; 903 } 904 905 FT_CMap_New( clazz, NULL, &cmaprec, NULL ); 906 } 907 } 908 } 909 910 Exit: 911 return error; 912 913 Bad_Format: 914 error = CFF_Err_Unknown_File_Format; 915 goto Exit; 916 } 917 918 919 FT_LOCAL_DEF( void ) 920 cff_face_done( FT_Face cffface ) /* CFF_Face */ 921 { 922 CFF_Face face = (CFF_Face)cffface; 923 FT_Memory memory; 924 SFNT_Service sfnt; 925 926 927 if ( !face ) 928 return; 929 930 memory = cffface->memory; 931 sfnt = (SFNT_Service)face->sfnt; 932 933 if ( sfnt ) 934 sfnt->done_face( face ); 935 936 { 937 CFF_Font cff = (CFF_Font)face->extra.data; 938 939 940 if ( cff ) 941 { 942 cff_font_done( cff ); 943 FT_FREE( face->extra.data ); 944 } 945 } 946 } 947 948 949 FT_LOCAL_DEF( FT_Error ) 950 cff_driver_init( FT_Module module ) 951 { 952 FT_UNUSED( module ); 953 954 return CFF_Err_Ok; 955 } 956 957 958 FT_LOCAL_DEF( void ) 959 cff_driver_done( FT_Module module ) 960 { 961 FT_UNUSED( module ); 962 } 963 964 965/* END */ 966