1 /***************************************************************************/ 2 /* */ 3 /* cffobjs.c */ 4 /* */ 5 /* OpenType objects manager (body). */ 6 /* */ 7 /* Copyright 1996-2013 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 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 ) 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 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 ) 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 ) 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_ULong top_upm = 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_ULong sub_upm = 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 ) 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_ULong top_upm = 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_ULong sub_upm = 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 ) 343 cff_slot_done( FT_GlyphSlot slot ) 344 { 345 slot->internal->glyph_hints = 0; 346 } 347 348 349 FT_LOCAL_DEF( FT_Error ) 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* 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 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 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 ) 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 cff->pshinter = pshinter; 587 cff->psnames = psnames; 588 589 cffface->face_index = face_index; 590 591 /* Complement the root flags with some interesting information. */ 592 /* Note that this is only necessary for pure CFF and CEF fonts; */ 593 /* SFNT based fonts use the `name' table instead. */ 594 595 cffface->num_glyphs = cff->num_glyphs; 596 597 dict = &cff->top_font.font_dict; 598 599 /* we need the `PSNames' module for CFF and CEF formats */ 600 /* which aren't CID-keyed */ 601 if ( dict->cid_registry == 0xFFFFU && !psnames ) 602 { 603 FT_ERROR(( "cff_face_init:" 604 " cannot open CFF & CEF fonts\n" 605 " " 606 " without the `PSNames' module\n" )); 607 error = FT_THROW( Missing_Module ); 608 goto Exit; 609 } 610 611 #ifdef FT_DEBUG_LEVEL_TRACE 612 { 613 FT_UInt idx; 614 FT_String* s; 615 616 617 FT_TRACE4(( "SIDs\n" )); 618 619 /* dump string index, including default strings for convenience */ 620 for ( idx = 0; idx < cff->num_strings + 390; idx++ ) 621 { 622 s = cff_index_get_sid_string( cff, idx ); 623 if ( s ) 624 FT_TRACE4((" %5d %s\n", idx, s )); 625 } 626 } 627 #endif /* FT_DEBUG_LEVEL_TRACE */ 628 629 if ( !dict->has_font_matrix ) 630 dict->units_per_em = pure_cff ? 1000 : face->root.units_per_EM; 631 632 /* Normalize the font matrix so that `matrix->xx' is 1; the */ 633 /* scaling is done with `units_per_em' then (at this point, */ 634 /* it already contains the scaling factor, but without */ 635 /* normalization of the matrix). */ 636 /* */ 637 /* Note that the offsets must be expressed in integer font */ 638 /* units. */ 639 640 { 641 FT_Matrix* matrix = &dict->font_matrix; 642 FT_Vector* offset = &dict->font_offset; 643 FT_ULong* upm = &dict->units_per_em; 644 FT_Fixed temp = FT_ABS( matrix->yy ); 645 646 647 if ( temp != 0x10000L ) 648 { 649 *upm = FT_DivFix( *upm, temp ); 650 651 matrix->xx = FT_DivFix( matrix->xx, temp ); 652 matrix->yx = FT_DivFix( matrix->yx, temp ); 653 matrix->xy = FT_DivFix( matrix->xy, temp ); 654 matrix->yy = FT_DivFix( matrix->yy, temp ); 655 offset->x = FT_DivFix( offset->x, temp ); 656 offset->y = FT_DivFix( offset->y, temp ); 657 } 658 659 offset->x >>= 16; 660 offset->y >>= 16; 661 } 662 663 for ( i = cff->num_subfonts; i > 0; i-- ) 664 { 665 CFF_FontRecDict sub = &cff->subfonts[i - 1]->font_dict; 666 CFF_FontRecDict top = &cff->top_font.font_dict; 667 668 FT_Matrix* matrix; 669 FT_Vector* offset; 670 FT_ULong* upm; 671 FT_Fixed temp; 672 673 674 if ( sub->has_font_matrix ) 675 { 676 FT_Long scaling; 677 678 679 /* if we have a top-level matrix, */ 680 /* concatenate the subfont matrix */ 681 682 if ( top->has_font_matrix ) 683 { 684 if ( top->units_per_em > 1 && sub->units_per_em > 1 ) 685 scaling = FT_MIN( top->units_per_em, sub->units_per_em ); 686 else 687 scaling = 1; 688 689 FT_Matrix_Multiply_Scaled( &top->font_matrix, 690 &sub->font_matrix, 691 scaling ); 692 FT_Vector_Transform_Scaled( &sub->font_offset, 693 &top->font_matrix, 694 scaling ); 695 696 sub->units_per_em = FT_MulDiv( sub->units_per_em, 697 top->units_per_em, 698 scaling ); 699 } 700 } 701 else 702 { 703 sub->font_matrix = top->font_matrix; 704 sub->font_offset = top->font_offset; 705 706 sub->units_per_em = top->units_per_em; 707 } 708 709 matrix = &sub->font_matrix; 710 offset = &sub->font_offset; 711 upm = &sub->units_per_em; 712 temp = FT_ABS( matrix->yy ); 713 714 if ( temp != 0x10000L ) 715 { 716 *upm = FT_DivFix( *upm, temp ); 717 718 matrix->xx = FT_DivFix( matrix->xx, temp ); 719 matrix->yx = FT_DivFix( matrix->yx, temp ); 720 matrix->xy = FT_DivFix( matrix->xy, temp ); 721 matrix->yy = FT_DivFix( matrix->yy, temp ); 722 offset->x = FT_DivFix( offset->x, temp ); 723 offset->y = FT_DivFix( offset->y, temp ); 724 } 725 726 offset->x >>= 16; 727 offset->y >>= 16; 728 } 729 730 if ( pure_cff ) 731 { 732 char* style_name = NULL; 733 734 735 /* set up num_faces */ 736 cffface->num_faces = cff->num_faces; 737 738 /* compute number of glyphs */ 739 if ( dict->cid_registry != 0xFFFFU ) 740 cffface->num_glyphs = cff->charset.max_cid + 1; 741 else 742 cffface->num_glyphs = cff->charstrings_index.count; 743 744 /* set global bbox, as well as EM size */ 745 cffface->bbox.xMin = dict->font_bbox.xMin >> 16; 746 cffface->bbox.yMin = dict->font_bbox.yMin >> 16; 747 /* no `U' suffix here to 0xFFFF! */ 748 cffface->bbox.xMax = ( dict->font_bbox.xMax + 0xFFFF ) >> 16; 749 cffface->bbox.yMax = ( dict->font_bbox.yMax + 0xFFFF ) >> 16; 750 751 cffface->units_per_EM = (FT_UShort)( dict->units_per_em ); 752 753 cffface->ascender = (FT_Short)( cffface->bbox.yMax ); 754 cffface->descender = (FT_Short)( cffface->bbox.yMin ); 755 756 cffface->height = (FT_Short)( ( cffface->units_per_EM * 12 ) / 10 ); 757 if ( cffface->height < cffface->ascender - cffface->descender ) 758 cffface->height = (FT_Short)( cffface->ascender - cffface->descender ); 759 760 cffface->underline_position = 761 (FT_Short)( dict->underline_position >> 16 ); 762 cffface->underline_thickness = 763 (FT_Short)( dict->underline_thickness >> 16 ); 764 765 /* retrieve font family & style name */ 766 cffface->family_name = cff_index_get_name( cff, face_index ); 767 if ( cffface->family_name ) 768 { 769 char* full = cff_index_get_sid_string( cff, 770 dict->full_name ); 771 char* fullp = full; 772 char* family = cffface->family_name; 773 char* family_name = NULL; 774 775 776 remove_subset_prefix( cffface->family_name ); 777 778 if ( dict->family_name ) 779 { 780 family_name = cff_index_get_sid_string( cff, 781 dict->family_name ); 782 if ( family_name ) 783 family = family_name; 784 } 785 786 /* We try to extract the style name from the full name. */ 787 /* We need to ignore spaces and dashes during the search. */ 788 if ( full && family ) 789 { 790 while ( *fullp ) 791 { 792 /* skip common characters at the start of both strings */ 793 if ( *fullp == *family ) 794 { 795 family++; 796 fullp++; 797 continue; 798 } 799 800 /* ignore spaces and dashes in full name during comparison */ 801 if ( *fullp == ' ' || *fullp == '-' ) 802 { 803 fullp++; 804 continue; 805 } 806 807 /* ignore spaces and dashes in family name during comparison */ 808 if ( *family == ' ' || *family == '-' ) 809 { 810 family++; 811 continue; 812 } 813 814 if ( !*family && *fullp ) 815 { 816 /* The full name begins with the same characters as the */ 817 /* family name, with spaces and dashes removed. In this */ 818 /* case, the remaining string in `fullp' will be used as */ 819 /* the style name. */ 820 style_name = cff_strcpy( memory, fullp ); 821 822 /* remove the style part from the family name (if present) */ 823 remove_style( cffface->family_name, style_name ); 824 } 825 break; 826 } 827 } 828 } 829 else 830 { 831 char *cid_font_name = 832 cff_index_get_sid_string( cff, 833 dict->cid_font_name ); 834 835 836 /* do we have a `/FontName' for a CID-keyed font? */ 837 if ( cid_font_name ) 838 cffface->family_name = cff_strcpy( memory, cid_font_name ); 839 } 840 841 if ( style_name ) 842 cffface->style_name = style_name; 843 else 844 /* assume "Regular" style if we don't know better */ 845 cffface->style_name = cff_strcpy( memory, (char *)"Regular" ); 846 847 /*******************************************************************/ 848 /* */ 849 /* Compute face flags. */ 850 /* */ 851 flags = FT_FACE_FLAG_SCALABLE | /* scalable outlines */ 852 FT_FACE_FLAG_HORIZONTAL | /* horizontal data */ 853 FT_FACE_FLAG_HINTER; /* has native hinter */ 854 855 if ( sfnt_format ) 856 flags |= FT_FACE_FLAG_SFNT; 857 858 /* fixed width font? */ 859 if ( dict->is_fixed_pitch ) 860 flags |= FT_FACE_FLAG_FIXED_WIDTH; 861 862 /* XXX: WE DO NOT SUPPORT KERNING METRICS IN THE GPOS TABLE FOR NOW */ 863 #if 0 864 /* kerning available? */ 865 if ( face->kern_pairs ) 866 flags |= FT_FACE_FLAG_KERNING; 867 #endif 868 869 cffface->face_flags = flags; 870 871 /*******************************************************************/ 872 /* */ 873 /* Compute style flags. */ 874 /* */ 875 flags = 0; 876 877 if ( dict->italic_angle ) 878 flags |= FT_STYLE_FLAG_ITALIC; 879 880 { 881 char *weight = cff_index_get_sid_string( cff, 882 dict->weight ); 883 884 885 if ( weight ) 886 if ( !ft_strcmp( weight, "Bold" ) || 887 !ft_strcmp( weight, "Black" ) ) 888 flags |= FT_STYLE_FLAG_BOLD; 889 } 890 891 /* double check */ 892 if ( !(flags & FT_STYLE_FLAG_BOLD) && cffface->style_name ) 893 if ( !ft_strncmp( cffface->style_name, "Bold", 4 ) || 894 !ft_strncmp( cffface->style_name, "Black", 5 ) ) 895 flags |= FT_STYLE_FLAG_BOLD; 896 897 cffface->style_flags = flags; 898 } 899 900 901 #ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES 902 /* CID-keyed CFF fonts don't have glyph names -- the SFNT loader */ 903 /* has unset this flag because of the 3.0 `post' table. */ 904 if ( dict->cid_registry == 0xFFFFU ) 905 cffface->face_flags |= FT_FACE_FLAG_GLYPH_NAMES; 906 #endif 907 908 if ( dict->cid_registry != 0xFFFFU && pure_cff ) 909 cffface->face_flags |= FT_FACE_FLAG_CID_KEYED; 910 911 912 /*******************************************************************/ 913 /* */ 914 /* Compute char maps. */ 915 /* */ 916 917 /* Try to synthesize a Unicode charmap if there is none available */ 918 /* already. If an OpenType font contains a Unicode "cmap", we */ 919 /* will use it, whatever be in the CFF part of the file. */ 920 { 921 FT_CharMapRec cmaprec; 922 FT_CharMap cmap; 923 FT_UInt nn; 924 CFF_Encoding encoding = &cff->encoding; 925 926 927 for ( nn = 0; nn < (FT_UInt)cffface->num_charmaps; nn++ ) 928 { 929 cmap = cffface->charmaps[nn]; 930 931 /* Windows Unicode? */ 932 if ( cmap->platform_id == TT_PLATFORM_MICROSOFT && 933 cmap->encoding_id == TT_MS_ID_UNICODE_CS ) 934 goto Skip_Unicode; 935 936 /* Apple Unicode platform id? */ 937 if ( cmap->platform_id == TT_PLATFORM_APPLE_UNICODE ) 938 goto Skip_Unicode; /* Apple Unicode */ 939 } 940 941 /* since CID-keyed fonts don't contain glyph names, we can't */ 942 /* construct a cmap */ 943 if ( pure_cff && cff->top_font.font_dict.cid_registry != 0xFFFFU ) 944 goto Exit; 945 946 #ifdef FT_MAX_CHARMAP_CACHEABLE 947 if ( nn + 1 > FT_MAX_CHARMAP_CACHEABLE ) 948 { 949 FT_ERROR(( "cff_face_init: no Unicode cmap is found, " 950 "and too many subtables (%d) to add synthesized cmap\n", 951 nn )); 952 goto Exit; 953 } 954 #endif 955 956 /* we didn't find a Unicode charmap -- synthesize one */ 957 cmaprec.face = cffface; 958 cmaprec.platform_id = TT_PLATFORM_MICROSOFT; 959 cmaprec.encoding_id = TT_MS_ID_UNICODE_CS; 960 cmaprec.encoding = FT_ENCODING_UNICODE; 961 962 nn = (FT_UInt)cffface->num_charmaps; 963 964 error = FT_CMap_New( &CFF_CMAP_UNICODE_CLASS_REC_GET, NULL, 965 &cmaprec, NULL ); 966 if ( error && 967 FT_ERR_NEQ( error, No_Unicode_Glyph_Name ) ) 968 goto Exit; 969 error = FT_Err_Ok; 970 971 /* if no Unicode charmap was previously selected, select this one */ 972 if ( cffface->charmap == NULL && nn != (FT_UInt)cffface->num_charmaps ) 973 cffface->charmap = cffface->charmaps[nn]; 974 975 Skip_Unicode: 976 #ifdef FT_MAX_CHARMAP_CACHEABLE 977 if ( nn > FT_MAX_CHARMAP_CACHEABLE ) 978 { 979 FT_ERROR(( "cff_face_init: Unicode cmap is found, " 980 "but too many preceding subtables (%d) to access\n", 981 nn - 1 )); 982 goto Exit; 983 } 984 #endif 985 if ( encoding->count > 0 ) 986 { 987 FT_CMap_Class clazz; 988 989 990 cmaprec.face = cffface; 991 cmaprec.platform_id = TT_PLATFORM_ADOBE; /* Adobe platform id */ 992 993 if ( encoding->offset == 0 ) 994 { 995 cmaprec.encoding_id = TT_ADOBE_ID_STANDARD; 996 cmaprec.encoding = FT_ENCODING_ADOBE_STANDARD; 997 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; 998 } 999 else if ( encoding->offset == 1 ) 1000 { 1001 cmaprec.encoding_id = TT_ADOBE_ID_EXPERT; 1002 cmaprec.encoding = FT_ENCODING_ADOBE_EXPERT; 1003 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; 1004 } 1005 else 1006 { 1007 cmaprec.encoding_id = TT_ADOBE_ID_CUSTOM; 1008 cmaprec.encoding = FT_ENCODING_ADOBE_CUSTOM; 1009 clazz = &CFF_CMAP_ENCODING_CLASS_REC_GET; 1010 } 1011 1012 error = FT_CMap_New( clazz, NULL, &cmaprec, NULL ); 1013 } 1014 } 1015 } 1016 1017 Exit: 1018 return error; 1019 } 1020 1021 1022 FT_LOCAL_DEF( void ) 1023 cff_face_done( FT_Face cffface ) /* CFF_Face */ 1024 { 1025 CFF_Face face = (CFF_Face)cffface; 1026 FT_Memory memory; 1027 SFNT_Service sfnt; 1028 1029 1030 if ( !face ) 1031 return; 1032 1033 memory = cffface->memory; 1034 sfnt = (SFNT_Service)face->sfnt; 1035 1036 if ( sfnt ) 1037 sfnt->done_face( face ); 1038 1039 { 1040 CFF_Font cff = (CFF_Font)face->extra.data; 1041 1042 1043 if ( cff ) 1044 { 1045 cff_font_done( cff ); 1046 FT_FREE( face->extra.data ); 1047 } 1048 } 1049 } 1050 1051 1052 FT_LOCAL_DEF( FT_Error ) 1053 cff_driver_init( FT_Module module ) /* CFF_Driver */ 1054 { 1055 CFF_Driver driver = (CFF_Driver)module; 1056 1057 1058 /* set default property values */ 1059 #ifdef CFF_CONFIG_OPTION_OLD_ENGINE 1060 driver->hinting_engine = FT_CFF_HINTING_FREETYPE; 1061 #else 1062 driver->hinting_engine = FT_CFF_HINTING_ADOBE; 1063 #endif 1064 driver->no_stem_darkening = FALSE; 1065 1066 return FT_Err_Ok; 1067 } 1068 1069 1070 FT_LOCAL_DEF( void ) 1071 cff_driver_done( FT_Module module ) /* CFF_Driver */ 1072 { 1073 FT_UNUSED( module ); 1074 } 1075 1076 1077 /* END */ 1078
