kc3-lang/freetype/src/truetype/ttobjs.c
-
Show log
Commit
-
Hash : e793092d
Author :
Date : 2005-03-01T02:13:50
Formatting. * src/truetype/ttpload.c (tt_face_load_loca): Fix typo. * src/sfnt/ttkern.c: Include `ttkern.h'. (FT_COMPONENT): Updated. * include/freetype/internal/fttrace.h: Add entry for `ttkern'. * src/sfnt/ttsbit0.c: s/FT_Err_/SFNT_Err_/. Decorate constants with `U' and `L' where necessary. * src/sfnt/ttcmap.c (tt_cmap4_next): Remove unused variable.
-
src/truetype/ttobjs.c
-
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915
/***************************************************************************/ /* */ /* ttobjs.c */ /* */ /* Objects manager (body). */ /* */ /* Copyright 1996-2001, 2002, 2003, 2004, 2005 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ /* modified, and distributed under the terms of the FreeType project */ /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ /* this file you indicate that you have read the license and */ /* understand and accept it fully. */ /* */ /***************************************************************************/ #include <ft2build.h> #include FT_INTERNAL_DEBUG_H #include FT_INTERNAL_CALC_H #include FT_INTERNAL_STREAM_H #include FT_TRUETYPE_IDS_H #include FT_TRUETYPE_TAGS_H #include FT_INTERNAL_SFNT_H #include "ttgload.h" #include "ttpload.h" #include "tterrors.h" #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER #include "ttinterp.h" #endif #ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING #include FT_TRUETYPE_UNPATENTED_H #endif #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT #include "ttgxvar.h" #endif /*************************************************************************/ /* */ /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ /* messages during execution. */ /* */ #undef FT_COMPONENT #define FT_COMPONENT trace_ttobjs #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER /*************************************************************************/ /* */ /* GLYPH ZONE FUNCTIONS */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Function> */ /* tt_glyphzone_done */ /* */ /* <Description> */ /* Deallocates a glyph zone. */ /* */ /* <Input> */ /* zone :: A pointer to the target glyph zone. */ /* */ FT_LOCAL_DEF( void ) tt_glyphzone_done( TT_GlyphZone zone ) { FT_Memory memory = zone->memory; if ( memory ) { FT_FREE( zone->contours ); FT_FREE( zone->tags ); FT_FREE( zone->cur ); FT_FREE( zone->org ); zone->max_points = zone->n_points = 0; zone->max_contours = zone->n_contours = 0; zone->memory = NULL; } } /*************************************************************************/ /* */ /* <Function> */ /* tt_glyphzone_new */ /* */ /* <Description> */ /* Allocates a new glyph zone. */ /* */ /* <Input> */ /* memory :: A handle to the current memory object. */ /* */ /* maxPoints :: The capacity of glyph zone in points. */ /* */ /* maxContours :: The capacity of glyph zone in contours. */ /* */ /* <Output> */ /* zone :: A pointer to the target glyph zone record. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_LOCAL_DEF( FT_Error ) tt_glyphzone_new( FT_Memory memory, FT_UShort maxPoints, FT_Short maxContours, TT_GlyphZone zone ) { FT_Error error; if ( maxPoints > 0 ) maxPoints += 2; FT_MEM_ZERO( zone, sizeof ( *zone ) ); zone->memory = memory; if ( FT_NEW_ARRAY( zone->org, maxPoints * 2 ) || FT_NEW_ARRAY( zone->cur, maxPoints * 2 ) || FT_NEW_ARRAY( zone->tags, maxPoints ) || FT_NEW_ARRAY( zone->contours, maxContours ) ) { tt_glyphzone_done( zone ); } return error; } #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ /*************************************************************************/ /* */ /* <Function> */ /* tt_face_init */ /* */ /* <Description> */ /* Initializes a given TrueType face object. */ /* */ /* <Input> */ /* stream :: The source font stream. */ /* */ /* face_index :: The index of the font face in the resource. */ /* */ /* num_params :: Number of additional generic parameters. Ignored. */ /* */ /* params :: Additional generic parameters. Ignored. */ /* */ /* <InOut> */ /* face :: The newly built face object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_LOCAL_DEF( FT_Error ) tt_face_init( FT_Stream stream, FT_Face ttface, /* TT_Face */ FT_Int face_index, FT_Int num_params, FT_Parameter* params ) { FT_Error error; FT_Library library; SFNT_Service sfnt; TT_Face face = (TT_Face)ttface; library = face->root.driver->root.library; sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" ); if ( !sfnt ) goto Bad_Format; /* create input stream from resource */ if ( FT_STREAM_SEEK( 0 ) ) goto Exit; /* check that we have a valid TrueType file */ error = sfnt->init_face( stream, face, face_index, num_params, params ); if ( error ) goto Exit; /* We must also be able to accept Mac/GX fonts, as well as OT ones. */ /* The 0x00020000 tag is completely undocumented; some fonts from */ /* Arphic made for Chinese Windows 3.1 have this. */ if ( face->format_tag != 0x00010000L && /* MS fonts */ face->format_tag != 0x00020000L && /* CJK fonts for Win 3.1 */ face->format_tag != TTAG_true ) /* Mac fonts */ { FT_TRACE2(( "[not a valid TTF font]\n" )); goto Bad_Format; } /* If we are performing a simple font format check, exit immediately */ if ( face_index < 0 ) return TT_Err_Ok; /* Load font directory */ error = sfnt->load_face( stream, face, face_index, num_params, params ); if ( error ) goto Exit; if ( face->root.face_flags & FT_FACE_FLAG_SCALABLE ) { #ifdef FT_CONFIG_OPTION_INCREMENTAL if ( !face->root.internal->incremental_interface ) error = tt_face_load_loca( face, stream ); if ( !error ) { error = tt_face_load_cvt( face, stream ); if ( !error ) error = tt_face_load_fpgm( face, stream ); } #else if ( !error ) error = tt_face_load_loca( face, stream ) || tt_face_load_cvt( face, stream ) || tt_face_load_fpgm( face, stream ); #endif } #ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING /* Determine whether unpatented hinting is to be used for this face. */ face->unpatented_hinting = FT_BOOL ( library->debug_hooks[ FT_DEBUG_HOOK_UNPATENTED_HINTING ] != NULL ); { int i; for ( i = 0; i < num_params && !face->unpatented_hinting; i++ ) if ( params[i].tag == FT_PARAM_TAG_UNPATENTED_HINTING ) face->unpatented_hinting = TRUE; } #endif /* TT_CONFIG_OPTION_UNPATENTED_HINTING */ /* initialize standard glyph loading routines */ TT_Init_Glyph_Loading( face ); Exit: return error; Bad_Format: error = TT_Err_Unknown_File_Format; goto Exit; } /*************************************************************************/ /* */ /* <Function> */ /* tt_face_done */ /* */ /* <Description> */ /* Finalizes a given face object. */ /* */ /* <Input> */ /* face :: A pointer to the face object to destroy. */ /* */ FT_LOCAL_DEF( void ) tt_face_done( FT_Face ttface ) /* TT_Face */ { TT_Face face = (TT_Face)ttface; FT_Memory memory = face->root.memory; FT_Stream stream = face->root.stream; SFNT_Service sfnt = (SFNT_Service)face->sfnt; /* for `extended TrueType formats' (i.e. compressed versions) */ if ( face->extra.finalizer ) face->extra.finalizer( face->extra.data ); if ( sfnt ) sfnt->done_face( face ); /* freeing the locations table */ tt_face_done_loca( face ); /* freeing the CVT */ FT_FREE( face->cvt ); face->cvt_size = 0; /* freeing the programs */ FT_FRAME_RELEASE( face->font_program ); FT_FRAME_RELEASE( face->cvt_program ); face->font_program_size = 0; face->cvt_program_size = 0; #ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT tt_done_blend( memory, face->blend ); face->blend = NULL; #endif } /*************************************************************************/ /* */ /* SIZE FUNCTIONS */ /* */ /*************************************************************************/ /*************************************************************************/ /* */ /* <Function> */ /* tt_size_init */ /* */ /* <Description> */ /* Initializes a new TrueType size object. */ /* */ /* <InOut> */ /* size :: A handle to the size object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_LOCAL_DEF( FT_Error ) tt_size_init( FT_Size ttsize ) /* TT_Size */ { TT_Size size = (TT_Size)ttsize; FT_Error error = TT_Err_Ok; #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER TT_Face face = (TT_Face)size->root.face; FT_Memory memory = face->root.memory; FT_Int i; TT_ExecContext exec; FT_UShort n_twilight; TT_MaxProfile* maxp = &face->max_profile; size->ttmetrics.valid = FALSE; size->max_function_defs = maxp->maxFunctionDefs; size->max_instruction_defs = maxp->maxInstructionDefs; size->num_function_defs = 0; size->num_instruction_defs = 0; size->max_func = 0; size->max_ins = 0; size->cvt_size = face->cvt_size; size->storage_size = maxp->maxStorage; /* Set default metrics */ { FT_Size_Metrics* metrics = &size->root.metrics; TT_Size_Metrics* metrics2 = &size->ttmetrics; metrics->x_ppem = 0; metrics->y_ppem = 0; metrics2->rotated = FALSE; metrics2->stretched = FALSE; /* set default compensation (all 0) */ for ( i = 0; i < 4; i++ ) metrics2->compensations[i] = 0; } /* allocate function defs, instruction defs, cvt, and storage area */ if ( FT_NEW_ARRAY( size->function_defs, size->max_function_defs ) || FT_NEW_ARRAY( size->instruction_defs, size->max_instruction_defs ) || FT_NEW_ARRAY( size->cvt, size->cvt_size ) || FT_NEW_ARRAY( size->storage, size->storage_size ) ) goto Fail_Memory; /* reserve twilight zone */ n_twilight = maxp->maxTwilightPoints; error = tt_glyphzone_new( memory, n_twilight, 0, &size->twilight ); if ( error ) goto Fail_Memory; size->twilight.n_points = n_twilight; /* set `face->interpreter' according to the debug hook present */ { FT_Library library = face->root.driver->root.library; face->interpreter = (TT_Interpreter) library->debug_hooks[FT_DEBUG_HOOK_TRUETYPE]; if ( !face->interpreter ) face->interpreter = (TT_Interpreter)TT_RunIns; } /* Fine, now execute the font program! */ exec = size->context; /* size objects used during debugging have their own context */ if ( !size->debug ) exec = TT_New_Context( face ); if ( !exec ) { error = TT_Err_Could_Not_Find_Context; goto Fail_Memory; } size->GS = tt_default_graphics_state; TT_Load_Context( exec, face, size ); exec->callTop = 0; exec->top = 0; exec->period = 64; exec->phase = 0; exec->threshold = 0; { FT_Size_Metrics* metrics = &exec->metrics; TT_Size_Metrics* tt_metrics = &exec->tt_metrics; metrics->x_ppem = 0; metrics->y_ppem = 0; metrics->x_scale = 0; metrics->y_scale = 0; tt_metrics->ppem = 0; tt_metrics->scale = 0; tt_metrics->ratio = 0x10000L; } exec->instruction_trap = FALSE; exec->cvtSize = size->cvt_size; exec->cvt = size->cvt; exec->F_dot_P = 0x10000L; /* allow font program execution */ TT_Set_CodeRange( exec, tt_coderange_font, face->font_program, face->font_program_size ); /* disable CVT and glyph programs coderange */ TT_Clear_CodeRange( exec, tt_coderange_cvt ); TT_Clear_CodeRange( exec, tt_coderange_glyph ); if ( face->font_program_size > 0 ) { error = TT_Goto_CodeRange( exec, tt_coderange_font, 0 ); if ( !error ) error = face->interpreter( exec ); if ( error ) goto Fail_Exec; } else error = TT_Err_Ok; TT_Save_Context( exec, size ); if ( !size->debug ) TT_Done_Context( exec ); #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ size->ttmetrics.valid = FALSE; return error; #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER Fail_Exec: if ( !size->debug ) TT_Done_Context( exec ); Fail_Memory: tt_size_done( ttsize ); return error; #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ } /*************************************************************************/ /* */ /* <Function> */ /* tt_size_done */ /* */ /* <Description> */ /* The TrueType size object finalizer. */ /* */ /* <Input> */ /* size :: A handle to the target size object. */ /* */ FT_LOCAL_DEF( void ) tt_size_done( FT_Size ttsize ) /* TT_Size */ { TT_Size size = (TT_Size)ttsize; #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER FT_Memory memory = size->root.face->memory; if ( size->debug ) { /* the debug context must be deleted by the debugger itself */ size->context = NULL; size->debug = FALSE; } FT_FREE( size->cvt ); size->cvt_size = 0; /* free storage area */ FT_FREE( size->storage ); size->storage_size = 0; /* twilight zone */ tt_glyphzone_done( &size->twilight ); FT_FREE( size->function_defs ); FT_FREE( size->instruction_defs ); size->num_function_defs = 0; size->max_function_defs = 0; size->num_instruction_defs = 0; size->max_instruction_defs = 0; size->max_func = 0; size->max_ins = 0; #endif size->ttmetrics.valid = FALSE; } /*************************************************************************/ /* */ /* <Function> */ /* Reset_Outline_Size */ /* */ /* <Description> */ /* Resets a TrueType outline size when resolutions and character */ /* dimensions have been changed. */ /* */ /* <Input> */ /* size :: A handle to the target size object. */ /* */ static FT_Error Reset_Outline_Size( TT_Size size ) { TT_Face face; FT_Error error = TT_Err_Ok; FT_Size_Metrics* metrics; if ( size->ttmetrics.valid ) return TT_Err_Ok; face = (TT_Face)size->root.face; metrics = &size->metrics; if ( metrics->x_ppem < 1 || metrics->y_ppem < 1 ) return TT_Err_Invalid_PPem; /* compute new transformation */ if ( metrics->x_ppem >= metrics->y_ppem ) { size->ttmetrics.scale = metrics->x_scale; size->ttmetrics.ppem = metrics->x_ppem; size->ttmetrics.x_ratio = 0x10000L; size->ttmetrics.y_ratio = FT_MulDiv( metrics->y_ppem, 0x10000L, metrics->x_ppem ); } else { size->ttmetrics.scale = metrics->y_scale; size->ttmetrics.ppem = metrics->y_ppem; size->ttmetrics.x_ratio = FT_MulDiv( metrics->x_ppem, 0x10000L, metrics->y_ppem ); size->ttmetrics.y_ratio = 0x10000L; } /* Compute root ascender, descender, text height, and max_advance */ metrics->ascender = FT_PIX_ROUND( FT_MulFix( face->root.ascender, metrics->y_scale ) ); metrics->descender = FT_PIX_ROUND( FT_MulFix( face->root.descender, metrics->y_scale ) ); metrics->height = FT_PIX_ROUND( FT_MulFix( face->root.height, metrics->y_scale ) ); metrics->max_advance = FT_PIX_ROUND( FT_MulFix( face->root.max_advance_width, metrics->x_scale ) ); #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS /* set to `invalid' by default */ size->strike_index = 0xFFFFU; #endif #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER { TT_ExecContext exec; FT_UInt i, j; /* Scale the cvt values to the new ppem. */ /* We use by default the y ppem to scale the CVT. */ for ( i = 0; i < size->cvt_size; i++ ) size->cvt[i] = FT_MulFix( face->cvt[i], size->ttmetrics.scale ); /* All twilight points are originally zero */ for ( j = 0; j < (FT_UInt)size->twilight.n_points; j++ ) { size->twilight.org[j].x = 0; size->twilight.org[j].y = 0; size->twilight.cur[j].x = 0; size->twilight.cur[j].y = 0; } /* clear storage area */ for ( i = 0; i < (FT_UInt)size->storage_size; i++ ) size->storage[i] = 0; size->GS = tt_default_graphics_state; /* get execution context and run prep program */ if ( size->debug ) exec = size->context; else exec = TT_New_Context( face ); /* debugging instances have their own context */ if ( !exec ) return TT_Err_Could_Not_Find_Context; TT_Load_Context( exec, face, size ); TT_Set_CodeRange( exec, tt_coderange_cvt, face->cvt_program, face->cvt_program_size ); TT_Clear_CodeRange( exec, tt_coderange_glyph ); exec->instruction_trap = FALSE; exec->top = 0; exec->callTop = 0; if ( face->cvt_program_size > 0 ) { error = TT_Goto_CodeRange( exec, tt_coderange_cvt, 0 ); if ( error ) goto End; if ( !size->debug ) error = face->interpreter( exec ); } else error = TT_Err_Ok; size->GS = exec->GS; /* save default graphics state */ End: TT_Save_Context( exec, size ); if ( !size->debug ) TT_Done_Context( exec ); /* debugging instances keep their context */ } #endif /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ if ( !error ) size->ttmetrics.valid = TRUE; return error; } #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS /*************************************************************************/ /* */ /* <Function> */ /* Reset_SBit_Size */ /* */ /* <Description> */ /* Resets a TrueType sbit size when resolutions and character */ /* dimensions have been changed. */ /* */ /* <Input> */ /* size :: A handle to the target size object. */ /* */ static FT_Error Reset_SBit_Size( TT_Size size ) { TT_Face face; FT_Error error = TT_Err_Ok; FT_ULong strike_index; FT_Size_Metrics* metrics; FT_Size_Metrics* sbit_metrics; SFNT_Service sfnt; metrics = &size->metrics; if ( size->strike_index != 0xFFFFU ) return TT_Err_Ok; face = (TT_Face)size->root.face; sfnt = (SFNT_Service)face->sfnt; sbit_metrics = &size->strike_metrics; error = sfnt->set_sbit_strike( face, metrics->x_ppem, metrics->y_ppem, &strike_index ); if ( !error ) { /* XXX: TODO: move this code to the SFNT module where it belongs */ #ifdef FT_OPTIMIZE_MEMORY FT_Byte* strike = face->sbit_table + 8 + strike_index*48; sbit_metrics->ascender = (FT_Char)strike[16] << 6; /* hori.ascender */ sbit_metrics->descender = (FT_Char)strike[17] << 6; /* hori.descender */ /* XXX: Is this correct? */ sbit_metrics->max_advance = ( (FT_Char)strike[22] + /* min_origin_SB */ strike[18] + /* max_width */ (FT_Char)strike[23] /* min_advance_SB */ ) << 6; #else /* !FT_OPTIMIZE_MEMORY */ TT_SBit_Strike strike = face->sbit_strikes + strike_index; sbit_metrics->ascender = strike->hori.ascender << 6; sbit_metrics->descender = strike->hori.descender << 6; /* XXX: Is this correct? */ sbit_metrics->max_advance = ( strike->hori.min_origin_SB + strike->hori.max_width + strike->hori.min_advance_SB ) << 6; #endif /* !FT_OPTIMIZE_MEMORY */ /* XXX: Is this correct? */ sbit_metrics->height = sbit_metrics->ascender - sbit_metrics->descender; sbit_metrics->x_ppem = metrics->x_ppem; sbit_metrics->y_ppem = metrics->y_ppem; size->strike_index = (FT_UInt)strike_index; } else { size->strike_index = 0xFFFFU; sbit_metrics->x_ppem = 0; sbit_metrics->y_ppem = 0; sbit_metrics->ascender = 0; sbit_metrics->descender = 0; sbit_metrics->height = 0; sbit_metrics->max_advance = 0; } return error; } #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ /*************************************************************************/ /* */ /* <Function> */ /* tt_size_reset */ /* */ /* <Description> */ /* Resets a TrueType size when resolutions and character dimensions */ /* have been changed. */ /* */ /* <Input> */ /* size :: A handle to the target size object. */ /* */ FT_LOCAL_DEF( FT_Error ) tt_size_reset( TT_Size size ) { FT_Face face; FT_Error error = TT_Err_Ok; face = size->root.face; if ( face->face_flags & FT_FACE_FLAG_SCALABLE ) { if ( !size->ttmetrics.valid ) error = Reset_Outline_Size( size ); if ( error ) return error; } #ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS if ( face->face_flags & FT_FACE_FLAG_FIXED_SIZES ) { if ( size->strike_index == 0xFFFFU ) error = Reset_SBit_Size( size ); if ( !error && !( face->face_flags & FT_FACE_FLAG_SCALABLE ) ) size->root.metrics = size->strike_metrics; } #endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */ if ( face->face_flags & FT_FACE_FLAG_SCALABLE ) return TT_Err_Ok; else return error; } /*************************************************************************/ /* */ /* <Function> */ /* tt_driver_init */ /* */ /* <Description> */ /* Initializes a given TrueType driver object. */ /* */ /* <Input> */ /* driver :: A handle to the target driver object. */ /* */ /* <Return> */ /* FreeType error code. 0 means success. */ /* */ FT_LOCAL_DEF( FT_Error ) tt_driver_init( FT_Module driver ) /* TT_Driver */ { FT_Error error; /* set `extra' in glyph loader */ error = FT_GlyphLoader_CreateExtra( FT_DRIVER( driver )->glyph_loader ); return error; } /*************************************************************************/ /* */ /* <Function> */ /* tt_driver_done */ /* */ /* <Description> */ /* Finalizes a given TrueType driver. */ /* */ /* <Input> */ /* driver :: A handle to the target TrueType driver. */ /* */ FT_LOCAL_DEF( void ) tt_driver_done( FT_Module ttdriver ) /* TT_Driver */ { #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER TT_Driver driver = (TT_Driver)ttdriver; /* destroy the execution context */ if ( driver->context ) { TT_Destroy_Context( driver->context, driver->root.root.memory ); driver->context = NULL; } #else FT_UNUSED( ttdriver ); #endif } /* END */