/src/freetype/src/winfonts/winfnt.c
C | 1159 lines | 840 code | 251 blank | 68 comment | 115 complexity | 8c9cf9528d00ad4f1f048ef1c887671f MD5 | raw file
1/***************************************************************************/ 2/* */ 3/* winfnt.c */ 4/* */ 5/* FreeType font driver for Windows FNT/FON files */ 6/* */ 7/* Copyright 1996-2004, 2006-2012 by */ 8/* David Turner, Robert Wilhelm, and Werner Lemberg. */ 9/* Copyright 2003 Huw D M Davies for Codeweavers */ 10/* Copyright 2007 Dmitry Timoshkov for Codeweavers */ 11/* */ 12/* This file is part of the FreeType project, and may only be used, */ 13/* modified, and distributed under the terms of the FreeType project */ 14/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ 15/* this file you indicate that you have read the license and */ 16/* understand and accept it fully. */ 17/* */ 18/***************************************************************************/ 19 20 21#include <ft2build.h> 22#include FT_WINFONTS_H 23#include FT_INTERNAL_DEBUG_H 24#include FT_INTERNAL_STREAM_H 25#include FT_INTERNAL_OBJECTS_H 26#include FT_TRUETYPE_IDS_H 27 28#include "winfnt.h" 29#include "fnterrs.h" 30#include FT_SERVICE_WINFNT_H 31#include FT_SERVICE_XFREE86_NAME_H 32 33 /*************************************************************************/ 34 /* */ 35 /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ 36 /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ 37 /* messages during execution. */ 38 /* */ 39#undef FT_COMPONENT 40#define FT_COMPONENT trace_winfnt 41 42 43 static const FT_Frame_Field winmz_header_fields[] = 44 { 45#undef FT_STRUCTURE 46#define FT_STRUCTURE WinMZ_HeaderRec 47 48 FT_FRAME_START( 64 ), 49 FT_FRAME_USHORT_LE ( magic ), 50 FT_FRAME_SKIP_BYTES( 29 * 2 ), 51 FT_FRAME_ULONG_LE ( lfanew ), 52 FT_FRAME_END 53 }; 54 55 static const FT_Frame_Field winne_header_fields[] = 56 { 57#undef FT_STRUCTURE 58#define FT_STRUCTURE WinNE_HeaderRec 59 60 FT_FRAME_START( 40 ), 61 FT_FRAME_USHORT_LE ( magic ), 62 FT_FRAME_SKIP_BYTES( 34 ), 63 FT_FRAME_USHORT_LE ( resource_tab_offset ), 64 FT_FRAME_USHORT_LE ( rname_tab_offset ), 65 FT_FRAME_END 66 }; 67 68 static const FT_Frame_Field winpe32_header_fields[] = 69 { 70#undef FT_STRUCTURE 71#define FT_STRUCTURE WinPE32_HeaderRec 72 73 FT_FRAME_START( 248 ), 74 FT_FRAME_ULONG_LE ( magic ), /* PE00 */ 75 FT_FRAME_USHORT_LE ( machine ), /* 0x014c - i386 */ 76 FT_FRAME_USHORT_LE ( number_of_sections ), 77 FT_FRAME_SKIP_BYTES( 12 ), 78 FT_FRAME_USHORT_LE ( size_of_optional_header ), 79 FT_FRAME_SKIP_BYTES( 2 ), 80 FT_FRAME_USHORT_LE ( magic32 ), /* 0x10b */ 81 FT_FRAME_SKIP_BYTES( 110 ), 82 FT_FRAME_ULONG_LE ( rsrc_virtual_address ), 83 FT_FRAME_ULONG_LE ( rsrc_size ), 84 FT_FRAME_SKIP_BYTES( 104 ), 85 FT_FRAME_END 86 }; 87 88 static const FT_Frame_Field winpe32_section_fields[] = 89 { 90#undef FT_STRUCTURE 91#define FT_STRUCTURE WinPE32_SectionRec 92 93 FT_FRAME_START( 40 ), 94 FT_FRAME_BYTES ( name, 8 ), 95 FT_FRAME_SKIP_BYTES( 4 ), 96 FT_FRAME_ULONG_LE ( virtual_address ), 97 FT_FRAME_ULONG_LE ( size_of_raw_data ), 98 FT_FRAME_ULONG_LE ( pointer_to_raw_data ), 99 FT_FRAME_SKIP_BYTES( 16 ), 100 FT_FRAME_END 101 }; 102 103 static const FT_Frame_Field winpe_rsrc_dir_fields[] = 104 { 105#undef FT_STRUCTURE 106#define FT_STRUCTURE WinPE_RsrcDirRec 107 108 FT_FRAME_START( 16 ), 109 FT_FRAME_ULONG_LE ( characteristics ), 110 FT_FRAME_ULONG_LE ( time_date_stamp ), 111 FT_FRAME_USHORT_LE( major_version ), 112 FT_FRAME_USHORT_LE( minor_version ), 113 FT_FRAME_USHORT_LE( number_of_named_entries ), 114 FT_FRAME_USHORT_LE( number_of_id_entries ), 115 FT_FRAME_END 116 }; 117 118 static const FT_Frame_Field winpe_rsrc_dir_entry_fields[] = 119 { 120#undef FT_STRUCTURE 121#define FT_STRUCTURE WinPE_RsrcDirEntryRec 122 123 FT_FRAME_START( 8 ), 124 FT_FRAME_ULONG_LE( name ), 125 FT_FRAME_ULONG_LE( offset ), 126 FT_FRAME_END 127 }; 128 129 static const FT_Frame_Field winpe_rsrc_data_entry_fields[] = 130 { 131#undef FT_STRUCTURE 132#define FT_STRUCTURE WinPE_RsrcDataEntryRec 133 134 FT_FRAME_START( 16 ), 135 FT_FRAME_ULONG_LE( offset_to_data ), 136 FT_FRAME_ULONG_LE( size ), 137 FT_FRAME_ULONG_LE( code_page ), 138 FT_FRAME_ULONG_LE( reserved ), 139 FT_FRAME_END 140 }; 141 142 static const FT_Frame_Field winfnt_header_fields[] = 143 { 144#undef FT_STRUCTURE 145#define FT_STRUCTURE FT_WinFNT_HeaderRec 146 147 FT_FRAME_START( 148 ), 148 FT_FRAME_USHORT_LE( version ), 149 FT_FRAME_ULONG_LE ( file_size ), 150 FT_FRAME_BYTES ( copyright, 60 ), 151 FT_FRAME_USHORT_LE( file_type ), 152 FT_FRAME_USHORT_LE( nominal_point_size ), 153 FT_FRAME_USHORT_LE( vertical_resolution ), 154 FT_FRAME_USHORT_LE( horizontal_resolution ), 155 FT_FRAME_USHORT_LE( ascent ), 156 FT_FRAME_USHORT_LE( internal_leading ), 157 FT_FRAME_USHORT_LE( external_leading ), 158 FT_FRAME_BYTE ( italic ), 159 FT_FRAME_BYTE ( underline ), 160 FT_FRAME_BYTE ( strike_out ), 161 FT_FRAME_USHORT_LE( weight ), 162 FT_FRAME_BYTE ( charset ), 163 FT_FRAME_USHORT_LE( pixel_width ), 164 FT_FRAME_USHORT_LE( pixel_height ), 165 FT_FRAME_BYTE ( pitch_and_family ), 166 FT_FRAME_USHORT_LE( avg_width ), 167 FT_FRAME_USHORT_LE( max_width ), 168 FT_FRAME_BYTE ( first_char ), 169 FT_FRAME_BYTE ( last_char ), 170 FT_FRAME_BYTE ( default_char ), 171 FT_FRAME_BYTE ( break_char ), 172 FT_FRAME_USHORT_LE( bytes_per_row ), 173 FT_FRAME_ULONG_LE ( device_offset ), 174 FT_FRAME_ULONG_LE ( face_name_offset ), 175 FT_FRAME_ULONG_LE ( bits_pointer ), 176 FT_FRAME_ULONG_LE ( bits_offset ), 177 FT_FRAME_BYTE ( reserved ), 178 FT_FRAME_ULONG_LE ( flags ), 179 FT_FRAME_USHORT_LE( A_space ), 180 FT_FRAME_USHORT_LE( B_space ), 181 FT_FRAME_USHORT_LE( C_space ), 182 FT_FRAME_ULONG_LE ( color_table_offset ), 183 FT_FRAME_BYTES ( reserved1, 16 ), 184 FT_FRAME_END 185 }; 186 187 188 static void 189 fnt_font_done( FNT_Face face ) 190 { 191 FT_Memory memory = FT_FACE( face )->memory; 192 FT_Stream stream = FT_FACE( face )->stream; 193 FNT_Font font = face->font; 194 195 196 if ( !font ) 197 return; 198 199 if ( font->fnt_frame ) 200 FT_FRAME_RELEASE( font->fnt_frame ); 201 FT_FREE( font->family_name ); 202 203 FT_FREE( font ); 204 face->font = 0; 205 } 206 207 208 static FT_Error 209 fnt_font_load( FNT_Font font, 210 FT_Stream stream ) 211 { 212 FT_Error error; 213 FT_WinFNT_Header header = &font->header; 214 FT_Bool new_format; 215 FT_UInt size; 216 217 218 /* first of all, read the FNT header */ 219 if ( FT_STREAM_SEEK( font->offset ) || 220 FT_STREAM_READ_FIELDS( winfnt_header_fields, header ) ) 221 goto Exit; 222 223 /* check header */ 224 if ( header->version != 0x200 && 225 header->version != 0x300 ) 226 { 227 FT_TRACE2(( " not a Windows FNT file\n" )); 228 error = FNT_Err_Unknown_File_Format; 229 goto Exit; 230 } 231 232 new_format = FT_BOOL( font->header.version == 0x300 ); 233 size = new_format ? 148 : 118; 234 235 if ( header->file_size < size ) 236 { 237 FT_TRACE2(( " not a Windows FNT file\n" )); 238 error = FNT_Err_Unknown_File_Format; 239 goto Exit; 240 } 241 242 /* Version 2 doesn't have these fields */ 243 if ( header->version == 0x200 ) 244 { 245 header->flags = 0; 246 header->A_space = 0; 247 header->B_space = 0; 248 header->C_space = 0; 249 250 header->color_table_offset = 0; 251 } 252 253 if ( header->file_type & 1 ) 254 { 255 FT_TRACE2(( "[can't handle vector FNT fonts]\n" )); 256 error = FNT_Err_Unknown_File_Format; 257 goto Exit; 258 } 259 260 /* this is a FNT file/table; extract its frame */ 261 if ( FT_STREAM_SEEK( font->offset ) || 262 FT_FRAME_EXTRACT( header->file_size, font->fnt_frame ) ) 263 goto Exit; 264 265 Exit: 266 return error; 267 } 268 269 270 static FT_Error 271 fnt_face_get_dll_font( FNT_Face face, 272 FT_Int face_index ) 273 { 274 FT_Error error; 275 FT_Stream stream = FT_FACE( face )->stream; 276 FT_Memory memory = FT_FACE( face )->memory; 277 WinMZ_HeaderRec mz_header; 278 279 280 face->font = 0; 281 282 /* does it begin with an MZ header? */ 283 if ( FT_STREAM_SEEK( 0 ) || 284 FT_STREAM_READ_FIELDS( winmz_header_fields, &mz_header ) ) 285 goto Exit; 286 287 error = FNT_Err_Unknown_File_Format; 288 if ( mz_header.magic == WINFNT_MZ_MAGIC ) 289 { 290 /* yes, now look for an NE header in the file */ 291 WinNE_HeaderRec ne_header; 292 293 294 FT_TRACE2(( "MZ signature found\n" )); 295 296 if ( FT_STREAM_SEEK( mz_header.lfanew ) || 297 FT_STREAM_READ_FIELDS( winne_header_fields, &ne_header ) ) 298 goto Exit; 299 300 error = FNT_Err_Unknown_File_Format; 301 if ( ne_header.magic == WINFNT_NE_MAGIC ) 302 { 303 /* good, now look into the resource table for each FNT resource */ 304 FT_ULong res_offset = mz_header.lfanew + 305 ne_header.resource_tab_offset; 306 FT_UShort size_shift; 307 FT_UShort font_count = 0; 308 FT_ULong font_offset = 0; 309 310 311 FT_TRACE2(( "NE signature found\n" )); 312 313 if ( FT_STREAM_SEEK( res_offset ) || 314 FT_FRAME_ENTER( ne_header.rname_tab_offset - 315 ne_header.resource_tab_offset ) ) 316 goto Exit; 317 318 size_shift = FT_GET_USHORT_LE(); 319 320 for (;;) 321 { 322 FT_UShort type_id, count; 323 324 325 type_id = FT_GET_USHORT_LE(); 326 if ( !type_id ) 327 break; 328 329 count = FT_GET_USHORT_LE(); 330 331 if ( type_id == 0x8008U ) 332 { 333 font_count = count; 334 font_offset = (FT_ULong)( FT_STREAM_POS() + 4 + 335 ( stream->cursor - stream->limit ) ); 336 break; 337 } 338 339 stream->cursor += 4 + count * 12; 340 } 341 342 FT_FRAME_EXIT(); 343 344 if ( !font_count || !font_offset ) 345 { 346 FT_TRACE2(( "this file doesn't contain any FNT resources\n" )); 347 error = FNT_Err_Invalid_File_Format; 348 goto Exit; 349 } 350 351 /* loading `winfnt_header_fields' needs at least 118 bytes; */ 352 /* use this as a rough measure to check the expected font size */ 353 if ( font_count * 118UL > stream->size ) 354 { 355 FT_TRACE2(( "invalid number of faces\n" )); 356 error = FNT_Err_Invalid_File_Format; 357 goto Exit; 358 } 359 360 face->root.num_faces = font_count; 361 362 if ( face_index >= font_count ) 363 { 364 error = FNT_Err_Invalid_Argument; 365 goto Exit; 366 } 367 else if ( face_index < 0 ) 368 goto Exit; 369 370 if ( FT_NEW( face->font ) ) 371 goto Exit; 372 373 if ( FT_STREAM_SEEK( font_offset + face_index * 12 ) || 374 FT_FRAME_ENTER( 12 ) ) 375 goto Fail; 376 377 face->font->offset = (FT_ULong)FT_GET_USHORT_LE() << size_shift; 378 face->font->fnt_size = (FT_ULong)FT_GET_USHORT_LE() << size_shift; 379 380 stream->cursor += 8; 381 382 FT_FRAME_EXIT(); 383 384 error = fnt_font_load( face->font, stream ); 385 } 386 else if ( ne_header.magic == WINFNT_PE_MAGIC ) 387 { 388 WinPE32_HeaderRec pe32_header; 389 WinPE32_SectionRec pe32_section; 390 WinPE_RsrcDirRec root_dir, name_dir, lang_dir; 391 WinPE_RsrcDirEntryRec dir_entry1, dir_entry2, dir_entry3; 392 WinPE_RsrcDataEntryRec data_entry; 393 394 FT_Long root_dir_offset, name_dir_offset, lang_dir_offset; 395 FT_UShort i, j, k; 396 397 398 FT_TRACE2(( "PE signature found\n" )); 399 400 if ( FT_STREAM_SEEK( mz_header.lfanew ) || 401 FT_STREAM_READ_FIELDS( winpe32_header_fields, &pe32_header ) ) 402 goto Exit; 403 404 FT_TRACE2(( "magic %04lx, machine %02x, number_of_sections %u, " 405 "size_of_optional_header %02x\n" 406 "magic32 %02x, rsrc_virtual_address %04lx, " 407 "rsrc_size %04lx\n", 408 pe32_header.magic, pe32_header.machine, 409 pe32_header.number_of_sections, 410 pe32_header.size_of_optional_header, 411 pe32_header.magic32, pe32_header.rsrc_virtual_address, 412 pe32_header.rsrc_size )); 413 414 if ( pe32_header.magic != WINFNT_PE_MAGIC /* check full signature */ || 415 pe32_header.machine != 0x014c /* i386 */ || 416 pe32_header.size_of_optional_header != 0xe0 /* FIXME */ || 417 pe32_header.magic32 != 0x10b ) 418 { 419 FT_TRACE2(( "this file has an invalid PE header\n" )); 420 error = FNT_Err_Invalid_File_Format; 421 goto Exit; 422 } 423 424 face->root.num_faces = 0; 425 426 for ( i = 0; i < pe32_header.number_of_sections; i++ ) 427 { 428 if ( FT_STREAM_READ_FIELDS( winpe32_section_fields, 429 &pe32_section ) ) 430 goto Exit; 431 432 FT_TRACE2(( "name %.8s, va %04lx, size %04lx, offset %04lx\n", 433 pe32_section.name, pe32_section.virtual_address, 434 pe32_section.size_of_raw_data, 435 pe32_section.pointer_to_raw_data )); 436 437 if ( pe32_header.rsrc_virtual_address == 438 pe32_section.virtual_address ) 439 goto Found_rsrc_section; 440 } 441 442 FT_TRACE2(( "this file doesn't contain any resources\n" )); 443 error = FNT_Err_Invalid_File_Format; 444 goto Exit; 445 446 Found_rsrc_section: 447 FT_TRACE2(( "found resources section %.8s\n", pe32_section.name )); 448 449 if ( FT_STREAM_SEEK( pe32_section.pointer_to_raw_data ) || 450 FT_STREAM_READ_FIELDS( winpe_rsrc_dir_fields, &root_dir ) ) 451 goto Exit; 452 453 root_dir_offset = pe32_section.pointer_to_raw_data; 454 455 for ( i = 0; i < root_dir.number_of_named_entries + 456 root_dir.number_of_id_entries; i++ ) 457 { 458 if ( FT_STREAM_SEEK( root_dir_offset + 16 + i * 8 ) || 459 FT_STREAM_READ_FIELDS( winpe_rsrc_dir_entry_fields, 460 &dir_entry1 ) ) 461 goto Exit; 462 463 if ( !(dir_entry1.offset & 0x80000000UL ) /* DataIsDirectory */ ) 464 { 465 error = FNT_Err_Invalid_File_Format; 466 goto Exit; 467 } 468 469 dir_entry1.offset &= ~0x80000000UL; 470 471 name_dir_offset = pe32_section.pointer_to_raw_data + 472 dir_entry1.offset; 473 474 if ( FT_STREAM_SEEK( pe32_section.pointer_to_raw_data + 475 dir_entry1.offset ) || 476 FT_STREAM_READ_FIELDS( winpe_rsrc_dir_fields, &name_dir ) ) 477 goto Exit; 478 479 for ( j = 0; j < name_dir.number_of_named_entries + 480 name_dir.number_of_id_entries; j++ ) 481 { 482 if ( FT_STREAM_SEEK( name_dir_offset + 16 + j * 8 ) || 483 FT_STREAM_READ_FIELDS( winpe_rsrc_dir_entry_fields, 484 &dir_entry2 ) ) 485 goto Exit; 486 487 if ( !(dir_entry2.offset & 0x80000000UL ) /* DataIsDirectory */ ) 488 { 489 error = FNT_Err_Invalid_File_Format; 490 goto Exit; 491 } 492 493 dir_entry2.offset &= ~0x80000000UL; 494 495 lang_dir_offset = pe32_section.pointer_to_raw_data + 496 dir_entry2.offset; 497 498 if ( FT_STREAM_SEEK( pe32_section.pointer_to_raw_data + 499 dir_entry2.offset ) || 500 FT_STREAM_READ_FIELDS( winpe_rsrc_dir_fields, &lang_dir ) ) 501 goto Exit; 502 503 for ( k = 0; k < lang_dir.number_of_named_entries + 504 lang_dir.number_of_id_entries; k++ ) 505 { 506 if ( FT_STREAM_SEEK( lang_dir_offset + 16 + k * 8 ) || 507 FT_STREAM_READ_FIELDS( winpe_rsrc_dir_entry_fields, 508 &dir_entry3 ) ) 509 goto Exit; 510 511 if ( dir_entry2.offset & 0x80000000UL /* DataIsDirectory */ ) 512 { 513 error = FNT_Err_Invalid_File_Format; 514 goto Exit; 515 } 516 517 if ( dir_entry1.name == 8 /* RT_FONT */ ) 518 { 519 if ( FT_STREAM_SEEK( root_dir_offset + dir_entry3.offset ) || 520 FT_STREAM_READ_FIELDS( winpe_rsrc_data_entry_fields, 521 &data_entry ) ) 522 goto Exit; 523 524 FT_TRACE2(( "found font #%lu, offset %04lx, " 525 "size %04lx, cp %lu\n", 526 dir_entry2.name, 527 pe32_section.pointer_to_raw_data + 528 data_entry.offset_to_data - 529 pe32_section.virtual_address, 530 data_entry.size, data_entry.code_page )); 531 532 if ( face_index == face->root.num_faces ) 533 { 534 if ( FT_NEW( face->font ) ) 535 goto Exit; 536 537 face->font->offset = pe32_section.pointer_to_raw_data + 538 data_entry.offset_to_data - 539 pe32_section.virtual_address; 540 face->font->fnt_size = data_entry.size; 541 542 error = fnt_font_load( face->font, stream ); 543 if ( error ) 544 { 545 FT_TRACE2(( "font #%lu load error %d\n", 546 dir_entry2.name, error )); 547 goto Fail; 548 } 549 else 550 FT_TRACE2(( "font #%lu successfully loaded\n", 551 dir_entry2.name )); 552 } 553 554 face->root.num_faces++; 555 } 556 } 557 } 558 } 559 } 560 561 if ( !face->root.num_faces ) 562 { 563 FT_TRACE2(( "this file doesn't contain any RT_FONT resources\n" )); 564 error = FNT_Err_Invalid_File_Format; 565 goto Exit; 566 } 567 568 if ( face_index >= face->root.num_faces ) 569 { 570 error = FNT_Err_Invalid_Argument; 571 goto Exit; 572 } 573 } 574 575 Fail: 576 if ( error ) 577 fnt_font_done( face ); 578 579 Exit: 580 return error; 581 } 582 583 584 typedef struct FNT_CMapRec_ 585 { 586 FT_CMapRec cmap; 587 FT_UInt32 first; 588 FT_UInt32 count; 589 590 } FNT_CMapRec, *FNT_CMap; 591 592 593 static FT_Error 594 fnt_cmap_init( FNT_CMap cmap ) 595 { 596 FNT_Face face = (FNT_Face)FT_CMAP_FACE( cmap ); 597 FNT_Font font = face->font; 598 599 600 cmap->first = (FT_UInt32) font->header.first_char; 601 cmap->count = (FT_UInt32)( font->header.last_char - cmap->first + 1 ); 602 603 return 0; 604 } 605 606 607 static FT_UInt 608 fnt_cmap_char_index( FNT_CMap cmap, 609 FT_UInt32 char_code ) 610 { 611 FT_UInt gindex = 0; 612 613 614 char_code -= cmap->first; 615 if ( char_code < cmap->count ) 616 /* we artificially increase the glyph index; */ 617 /* FNT_Load_Glyph reverts to the right one */ 618 gindex = (FT_UInt)( char_code + 1 ); 619 return gindex; 620 } 621 622 623 static FT_UInt32 624 fnt_cmap_char_next( FNT_CMap cmap, 625 FT_UInt32 *pchar_code ) 626 { 627 FT_UInt gindex = 0; 628 FT_UInt32 result = 0; 629 FT_UInt32 char_code = *pchar_code + 1; 630 631 632 if ( char_code <= cmap->first ) 633 { 634 result = cmap->first; 635 gindex = 1; 636 } 637 else 638 { 639 char_code -= cmap->first; 640 if ( char_code < cmap->count ) 641 { 642 result = cmap->first + char_code; 643 gindex = (FT_UInt)( char_code + 1 ); 644 } 645 } 646 647 *pchar_code = result; 648 return gindex; 649 } 650 651 652 static const FT_CMap_ClassRec fnt_cmap_class_rec = 653 { 654 sizeof ( FNT_CMapRec ), 655 656 (FT_CMap_InitFunc) fnt_cmap_init, 657 (FT_CMap_DoneFunc) NULL, 658 (FT_CMap_CharIndexFunc)fnt_cmap_char_index, 659 (FT_CMap_CharNextFunc) fnt_cmap_char_next, 660 661 NULL, NULL, NULL, NULL, NULL 662 }; 663 664 static FT_CMap_Class const fnt_cmap_class = &fnt_cmap_class_rec; 665 666 667 static void 668 FNT_Face_Done( FT_Face fntface ) /* FNT_Face */ 669 { 670 FNT_Face face = (FNT_Face)fntface; 671 FT_Memory memory; 672 673 674 if ( !face ) 675 return; 676 677 memory = FT_FACE_MEMORY( face ); 678 679 fnt_font_done( face ); 680 681 FT_FREE( fntface->available_sizes ); 682 fntface->num_fixed_sizes = 0; 683 } 684 685 686 static FT_Error 687 FNT_Face_Init( FT_Stream stream, 688 FT_Face fntface, /* FNT_Face */ 689 FT_Int face_index, 690 FT_Int num_params, 691 FT_Parameter* params ) 692 { 693 FNT_Face face = (FNT_Face)fntface; 694 FT_Error error; 695 FT_Memory memory = FT_FACE_MEMORY( face ); 696 697 FT_UNUSED( num_params ); 698 FT_UNUSED( params ); 699 700 701 FT_TRACE2(( "Windows FNT driver\n" )); 702 703 /* try to load font from a DLL */ 704 error = fnt_face_get_dll_font( face, face_index ); 705 if ( !error && face_index < 0 ) 706 goto Exit; 707 708 if ( error == FNT_Err_Unknown_File_Format ) 709 { 710 /* this didn't work; try to load a single FNT font */ 711 FNT_Font font; 712 713 if ( FT_NEW( face->font ) ) 714 goto Exit; 715 716 fntface->num_faces = 1; 717 718 font = face->font; 719 font->offset = 0; 720 font->fnt_size = stream->size; 721 722 error = fnt_font_load( font, stream ); 723 724 if ( !error ) 725 { 726 if ( face_index > 0 ) 727 error = FNT_Err_Invalid_Argument; 728 else if ( face_index < 0 ) 729 goto Exit; 730 } 731 } 732 733 if ( error ) 734 goto Fail; 735 736 /* we now need to fill the root FT_Face fields */ 737 /* with relevant information */ 738 { 739 FT_Face root = FT_FACE( face ); 740 FNT_Font font = face->font; 741 FT_PtrDist family_size; 742 743 744 root->face_index = face_index; 745 746 root->face_flags = FT_FACE_FLAG_FIXED_SIZES | 747 FT_FACE_FLAG_HORIZONTAL; 748 749 if ( font->header.avg_width == font->header.max_width ) 750 root->face_flags |= FT_FACE_FLAG_FIXED_WIDTH; 751 752 if ( font->header.italic ) 753 root->style_flags |= FT_STYLE_FLAG_ITALIC; 754 755 if ( font->header.weight >= 800 ) 756 root->style_flags |= FT_STYLE_FLAG_BOLD; 757 758 /* set up the `fixed_sizes' array */ 759 if ( FT_NEW_ARRAY( root->available_sizes, 1 ) ) 760 goto Fail; 761 762 root->num_fixed_sizes = 1; 763 764 { 765 FT_Bitmap_Size* bsize = root->available_sizes; 766 FT_UShort x_res, y_res; 767 768 769 bsize->width = font->header.avg_width; 770 bsize->height = (FT_Short)( 771 font->header.pixel_height + font->header.external_leading ); 772 bsize->size = font->header.nominal_point_size << 6; 773 774 x_res = font->header.horizontal_resolution; 775 if ( !x_res ) 776 x_res = 72; 777 778 y_res = font->header.vertical_resolution; 779 if ( !y_res ) 780 y_res = 72; 781 782 bsize->y_ppem = FT_MulDiv( bsize->size, y_res, 72 ); 783 bsize->y_ppem = FT_PIX_ROUND( bsize->y_ppem ); 784 785 /* 786 * this reads: 787 * 788 * the nominal height is larger than the bbox's height 789 * 790 * => nominal_point_size contains incorrect value; 791 * use pixel_height as the nominal height 792 */ 793 if ( bsize->y_ppem > ( font->header.pixel_height << 6 ) ) 794 { 795 FT_TRACE2(( "use pixel_height as the nominal height\n" )); 796 797 bsize->y_ppem = font->header.pixel_height << 6; 798 bsize->size = FT_MulDiv( bsize->y_ppem, 72, y_res ); 799 } 800 801 bsize->x_ppem = FT_MulDiv( bsize->size, x_res, 72 ); 802 bsize->x_ppem = FT_PIX_ROUND( bsize->x_ppem ); 803 } 804 805 { 806 FT_CharMapRec charmap; 807 808 809 charmap.encoding = FT_ENCODING_NONE; 810 /* initial platform/encoding should indicate unset status? */ 811 charmap.platform_id = TT_PLATFORM_APPLE_UNICODE; 812 charmap.encoding_id = TT_APPLE_ID_DEFAULT; 813 charmap.face = root; 814 815 if ( font->header.charset == FT_WinFNT_ID_MAC ) 816 { 817 charmap.encoding = FT_ENCODING_APPLE_ROMAN; 818 charmap.platform_id = TT_PLATFORM_MACINTOSH; 819/* charmap.encoding_id = TT_MAC_ID_ROMAN; */ 820 } 821 822 error = FT_CMap_New( fnt_cmap_class, 823 NULL, 824 &charmap, 825 NULL ); 826 if ( error ) 827 goto Fail; 828 829 /* Select default charmap */ 830 if ( root->num_charmaps ) 831 root->charmap = root->charmaps[0]; 832 } 833 834 /* set up remaining flags */ 835 836 if ( font->header.last_char < font->header.first_char ) 837 { 838 FT_TRACE2(( "invalid number of glyphs\n" )); 839 error = FNT_Err_Invalid_File_Format; 840 goto Fail; 841 } 842 843 /* reserve one slot for the .notdef glyph at index 0 */ 844 root->num_glyphs = font->header.last_char - 845 font->header.first_char + 1 + 1; 846 847 if ( font->header.face_name_offset >= font->header.file_size ) 848 { 849 FT_TRACE2(( "invalid family name offset\n" )); 850 error = FNT_Err_Invalid_File_Format; 851 goto Fail; 852 } 853 family_size = font->header.file_size - font->header.face_name_offset; 854 /* Some broken fonts don't delimit the face name with a final */ 855 /* NULL byte -- the frame is erroneously one byte too small. */ 856 /* We thus allocate one more byte, setting it explicitly to */ 857 /* zero. */ 858 if ( FT_ALLOC( font->family_name, family_size + 1 ) ) 859 goto Fail; 860 861 FT_MEM_COPY( font->family_name, 862 font->fnt_frame + font->header.face_name_offset, 863 family_size ); 864 865 font->family_name[family_size] = '\0'; 866 867 if ( FT_REALLOC( font->family_name, 868 family_size, 869 ft_strlen( font->family_name ) + 1 ) ) 870 goto Fail; 871 872 root->family_name = font->family_name; 873 root->style_name = (char *)"Regular"; 874 875 if ( root->style_flags & FT_STYLE_FLAG_BOLD ) 876 { 877 if ( root->style_flags & FT_STYLE_FLAG_ITALIC ) 878 root->style_name = (char *)"Bold Italic"; 879 else 880 root->style_name = (char *)"Bold"; 881 } 882 else if ( root->style_flags & FT_STYLE_FLAG_ITALIC ) 883 root->style_name = (char *)"Italic"; 884 } 885 goto Exit; 886 887 Fail: 888 FNT_Face_Done( fntface ); 889 890 Exit: 891 return error; 892 } 893 894 895 static FT_Error 896 FNT_Size_Select( FT_Size size, 897 FT_ULong strike_index ) 898 { 899 FNT_Face face = (FNT_Face)size->face; 900 FT_WinFNT_Header header = &face->font->header; 901 902 FT_UNUSED( strike_index ); 903 904 905 FT_Select_Metrics( size->face, 0 ); 906 907 size->metrics.ascender = header->ascent * 64; 908 size->metrics.descender = -( header->pixel_height - 909 header->ascent ) * 64; 910 size->metrics.max_advance = header->max_width * 64; 911 912 return FNT_Err_Ok; 913 } 914 915 916 static FT_Error 917 FNT_Size_Request( FT_Size size, 918 FT_Size_Request req ) 919 { 920 FNT_Face face = (FNT_Face)size->face; 921 FT_WinFNT_Header header = &face->font->header; 922 FT_Bitmap_Size* bsize = size->face->available_sizes; 923 FT_Error error = FNT_Err_Invalid_Pixel_Size; 924 FT_Long height; 925 926 927 height = FT_REQUEST_HEIGHT( req ); 928 height = ( height + 32 ) >> 6; 929 930 switch ( req->type ) 931 { 932 case FT_SIZE_REQUEST_TYPE_NOMINAL: 933 if ( height == ( ( bsize->y_ppem + 32 ) >> 6 ) ) 934 error = FNT_Err_Ok; 935 break; 936 937 case FT_SIZE_REQUEST_TYPE_REAL_DIM: 938 if ( height == header->pixel_height ) 939 error = FNT_Err_Ok; 940 break; 941 942 default: 943 error = FNT_Err_Unimplemented_Feature; 944 break; 945 } 946 947 if ( error ) 948 return error; 949 else 950 return FNT_Size_Select( size, 0 ); 951 } 952 953 954 static FT_Error 955 FNT_Load_Glyph( FT_GlyphSlot slot, 956 FT_Size size, 957 FT_UInt glyph_index, 958 FT_Int32 load_flags ) 959 { 960 FNT_Face face = (FNT_Face)FT_SIZE_FACE( size ); 961 FNT_Font font; 962 FT_Error error = FNT_Err_Ok; 963 FT_Byte* p; 964 FT_Int len; 965 FT_Bitmap* bitmap = &slot->bitmap; 966 FT_ULong offset; 967 FT_Bool new_format; 968 969 FT_UNUSED( load_flags ); 970 971 972 if ( !face ) 973 { 974 error = FNT_Err_Invalid_Argument; 975 goto Exit; 976 } 977 978 font = face->font; 979 980 if ( !font || 981 glyph_index >= (FT_UInt)( FT_FACE( face )->num_glyphs ) ) 982 { 983 error = FNT_Err_Invalid_Argument; 984 goto Exit; 985 } 986 987 if ( glyph_index > 0 ) 988 glyph_index--; /* revert to real index */ 989 else 990 glyph_index = font->header.default_char; /* the .notdef glyph */ 991 992 new_format = FT_BOOL( font->header.version == 0x300 ); 993 len = new_format ? 6 : 4; 994 995 /* jump to glyph entry */ 996 p = font->fnt_frame + ( new_format ? 148 : 118 ) + len * glyph_index; 997 998 bitmap->width = FT_NEXT_SHORT_LE( p ); 999 1000 if ( new_format ) 1001 offset = FT_NEXT_ULONG_LE( p ); 1002 else 1003 offset = FT_NEXT_USHORT_LE( p ); 1004 1005 if ( offset >= font->header.file_size ) 1006 { 1007 FT_TRACE2(( "invalid FNT offset\n" )); 1008 error = FNT_Err_Invalid_File_Format; 1009 goto Exit; 1010 } 1011 1012 /* jump to glyph data */ 1013 p = font->fnt_frame + /* font->header.bits_offset */ + offset; 1014 1015 /* allocate and build bitmap */ 1016 { 1017 FT_Memory memory = FT_FACE_MEMORY( slot->face ); 1018 FT_Int pitch = ( bitmap->width + 7 ) >> 3; 1019 FT_Byte* column; 1020 FT_Byte* write; 1021 1022 1023 bitmap->pitch = pitch; 1024 bitmap->rows = font->header.pixel_height; 1025 bitmap->pixel_mode = FT_PIXEL_MODE_MONO; 1026 1027 if ( offset + pitch * bitmap->rows >= font->header.file_size ) 1028 { 1029 FT_TRACE2(( "invalid bitmap width\n" )); 1030 error = FNT_Err_Invalid_File_Format; 1031 goto Exit; 1032 } 1033 1034 /* note: since glyphs are stored in columns and not in rows we */ 1035 /* can't use ft_glyphslot_set_bitmap */ 1036 if ( FT_ALLOC_MULT( bitmap->buffer, pitch, bitmap->rows ) ) 1037 goto Exit; 1038 1039 column = (FT_Byte*)bitmap->buffer; 1040 1041 for ( ; pitch > 0; pitch--, column++ ) 1042 { 1043 FT_Byte* limit = p + bitmap->rows; 1044 1045 1046 for ( write = column; p < limit; p++, write += bitmap->pitch ) 1047 *write = *p; 1048 } 1049 } 1050 1051 slot->internal->flags = FT_GLYPH_OWN_BITMAP; 1052 slot->bitmap_left = 0; 1053 slot->bitmap_top = font->header.ascent; 1054 slot->format = FT_GLYPH_FORMAT_BITMAP; 1055 1056 /* now set up metrics */ 1057 slot->metrics.width = bitmap->width << 6; 1058 slot->metrics.height = bitmap->rows << 6; 1059 slot->metrics.horiAdvance = bitmap->width << 6; 1060 slot->metrics.horiBearingX = 0; 1061 slot->metrics.horiBearingY = slot->bitmap_top << 6; 1062 1063 ft_synthesize_vertical_metrics( &slot->metrics, 1064 bitmap->rows << 6 ); 1065 1066 Exit: 1067 return error; 1068 } 1069 1070 1071 static FT_Error 1072 winfnt_get_header( FT_Face face, 1073 FT_WinFNT_HeaderRec *aheader ) 1074 { 1075 FNT_Font font = ((FNT_Face)face)->font; 1076 1077 1078 *aheader = font->header; 1079 1080 return 0; 1081 } 1082 1083 1084 static const FT_Service_WinFntRec winfnt_service_rec = 1085 { 1086 winfnt_get_header 1087 }; 1088 1089 /* 1090 * SERVICE LIST 1091 * 1092 */ 1093 1094 static const FT_ServiceDescRec winfnt_services[] = 1095 { 1096 { FT_SERVICE_ID_XF86_NAME, FT_XF86_FORMAT_WINFNT }, 1097 { FT_SERVICE_ID_WINFNT, &winfnt_service_rec }, 1098 { NULL, NULL } 1099 }; 1100 1101 1102 static FT_Module_Interface 1103 winfnt_get_service( FT_Module module, 1104 const FT_String* service_id ) 1105 { 1106 FT_UNUSED( module ); 1107 1108 return ft_service_list_lookup( winfnt_services, service_id ); 1109 } 1110 1111 1112 1113 1114 FT_CALLBACK_TABLE_DEF 1115 const FT_Driver_ClassRec winfnt_driver_class = 1116 { 1117 { 1118 FT_MODULE_FONT_DRIVER | 1119 FT_MODULE_DRIVER_NO_OUTLINES, 1120 sizeof ( FT_DriverRec ), 1121 1122 "winfonts", 1123 0x10000L, 1124 0x20000L, 1125 1126 0, 1127 1128 0, /* FT_Module_Constructor */ 1129 0, /* FT_Module_Destructor */ 1130 winfnt_get_service 1131 }, 1132 1133 sizeof ( FNT_FaceRec ), 1134 sizeof ( FT_SizeRec ), 1135 sizeof ( FT_GlyphSlotRec ), 1136 1137 FNT_Face_Init, 1138 FNT_Face_Done, 1139 0, /* FT_Size_InitFunc */ 1140 0, /* FT_Size_DoneFunc */ 1141 0, /* FT_Slot_InitFunc */ 1142 0, /* FT_Slot_DoneFunc */ 1143 1144#ifdef FT_CONFIG_OPTION_OLD_INTERNALS 1145 ft_stub_set_char_sizes, 1146 ft_stub_set_pixel_sizes, 1147#endif 1148 FNT_Load_Glyph, 1149 1150 0, /* FT_Face_GetKerningFunc */ 1151 0, /* FT_Face_AttachFunc */ 1152 0, /* FT_Face_GetAdvancesFunc */ 1153 1154 FNT_Size_Request, 1155 FNT_Size_Select 1156 }; 1157 1158 1159/* END */