1 /***************************************************************************/ 2 /* */ 3 /* ftoption.h */ 4 /* */ 5 /* User-selectable configuration macros (specification only). */ 6 /* */ 7 /* Copyright 1996-2011 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 #ifndef __FTOPTION_H__ 20 #define __FTOPTION_H__ 21 22 23 #include <ft2build.h> 24 25 26 FT_BEGIN_HEADER 27 28 /*************************************************************************/ 29 /* */ 30 /* USER-SELECTABLE CONFIGURATION MACROS */ 31 /* */ 32 /* This file contains the default configuration macro definitions for */ 33 /* a standard build of the FreeType library. There are three ways to */ 34 /* use this file to build project-specific versions of the library: */ 35 /* */ 36 /* - You can modify this file by hand, but this is not recommended in */ 37 /* cases where you would like to build several versions of the */ 38 /* library from a single source directory. */ 39 /* */ 40 /* - You can put a copy of this file in your build directory, more */ 41 /* precisely in `$BUILD/freetype/config/ftoption.h', where `$BUILD' */ 42 /* is the name of a directory that is included _before_ the FreeType */ 43 /* include path during compilation. */ 44 /* */ 45 /* The default FreeType Makefiles and Jamfiles use the build */ 46 /* directory `builds/<system>' by default, but you can easily change */ 47 /* that for your own projects. */ 48 /* */ 49 /* - Copy the file <ft2build.h> to `$BUILD/ft2build.h' and modify it */ 50 /* slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to */ 51 /* locate this file during the build. For example, */ 52 /* */ 53 /* #define FT_CONFIG_OPTIONS_H <myftoptions.h> */ 54 /* #include <freetype/config/ftheader.h> */ 55 /* */ 56 /* will use `$BUILD/myftoptions.h' instead of this file for macro */ 57 /* definitions. */ 58 /* */ 59 /* Note also that you can similarly pre-define the macro */ 60 /* FT_CONFIG_MODULES_H used to locate the file listing of the modules */ 61 /* that are statically linked to the library at compile time. By */ 62 /* default, this file is <freetype/config/ftmodule.h>. */ 63 /* */ 64 /* We highly recommend using the third method whenever possible. */ 65 /* */ 66 /*************************************************************************/ 67 68 69 /*************************************************************************/ 70 /*************************************************************************/ 71 /**** ****/ 72 /**** G E N E R A L F R E E T Y P E 2 C O N F I G U R A T I O N ****/ 73 /**** ****/ 74 /*************************************************************************/ 75 /*************************************************************************/ 76 77 78 /*************************************************************************/ 79 /* */ 80 /* Uncomment the line below if you want to activate sub-pixel rendering */ 81 /* (a.k.a. LCD rendering, or ClearType) in this build of the library. */ 82 /* */ 83 /* Note that this feature is covered by several Microsoft patents */ 84 /* and should not be activated in any default build of the library. */ 85 /* */ 86 /* This macro has no impact on the FreeType API, only on its */ 87 /* _implementation_. For example, using FT_RENDER_MODE_LCD when calling */ 88 /* FT_Render_Glyph still generates a bitmap that is 3 times wider than */ 89 /* the original size in case this macro isn't defined; however, each */ 90 /* triplet of subpixels has R=G=B. */ 91 /* */ 92 /* This is done to allow FreeType clients to run unmodified, forcing */ 93 /* them to display normal gray-level anti-aliased glyphs. */ 94 /* */ 95 /* #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING */ 96 97 98 /*************************************************************************/ 99 /* */ 100 /* Many compilers provide a non-ANSI 64-bit data type that can be used */ 101 /* by FreeType to speed up some computations. However, this will create */ 102 /* some problems when compiling the library in strict ANSI mode. */ 103 /* */ 104 /* For this reason, the use of 64-bit integers is normally disabled when */ 105 /* the __STDC__ macro is defined. You can however disable this by */ 106 /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here. */ 107 /* */ 108 /* For most compilers, this will only create compilation warnings when */ 109 /* building the library. */ 110 /* */ 111 /* ObNote: The compiler-specific 64-bit integers are detected in the */ 112 /* file `ftconfig.h' either statically or through the */ 113 /* `configure' script on supported platforms. */ 114 /* */ 115 #undef FT_CONFIG_OPTION_FORCE_INT64 116 117 118 /*************************************************************************/ 119 /* */ 120 /* If this macro is defined, do not try to use an assembler version of */ 121 /* performance-critical functions (e.g. FT_MulFix). You should only do */ 122 /* that to verify that the assembler function works properly, or to */ 123 /* execute benchmark tests of the various implementations. */ 124 /* #define FT_CONFIG_OPTION_NO_ASSEMBLER */ 125 126 127 /*************************************************************************/ 128 /* */ 129 /* If this macro is defined, try to use an inlined assembler version of */ 130 /* the `FT_MulFix' function, which is a `hotspot' when loading and */ 131 /* hinting glyphs, and which should be executed as fast as possible. */ 132 /* */ 133 /* Note that if your compiler or CPU is not supported, this will default */ 134 /* to the standard and portable implementation found in `ftcalc.c'. */ 135 /* */ 136 #define FT_CONFIG_OPTION_INLINE_MULFIX 137 138 139 /*************************************************************************/ 140 /* */ 141 /* LZW-compressed file support. */ 142 /* */ 143 /* FreeType now handles font files that have been compressed with the */ 144 /* `compress' program. This is mostly used to parse many of the PCF */ 145 /* files that come with various X11 distributions. The implementation */ 146 /* uses NetBSD's `zopen' to partially uncompress the file on the fly */ 147 /* (see src/lzw/ftgzip.c). */ 148 /* */ 149 /* Define this macro if you want to enable this `feature'. */ 150 /* */ 151 #define FT_CONFIG_OPTION_USE_LZW 152 153 154 /*************************************************************************/ 155 /* */ 156 /* Gzip-compressed file support. */ 157 /* */ 158 /* FreeType now handles font files that have been compressed with the */ 159 /* `gzip' program. This is mostly used to parse many of the PCF files */ 160 /* that come with XFree86. The implementation uses `zlib' to */ 161 /* partially uncompress the file on the fly (see src/gzip/ftgzip.c). */ 162 /* */ 163 /* Define this macro if you want to enable this `feature'. See also */ 164 /* the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below. */ 165 /* */ 166 #define FT_CONFIG_OPTION_USE_ZLIB 167 168 169 /*************************************************************************/ 170 /* */ 171 /* ZLib library selection */ 172 /* */ 173 /* This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined. */ 174 /* It allows FreeType's `ftgzip' component to link to the system's */ 175 /* installation of the ZLib library. This is useful on systems like */ 176 /* Unix or VMS where it generally is already available. */ 177 /* */ 178 /* If you let it undefined, the component will use its own copy */ 179 /* of the zlib sources instead. These have been modified to be */ 180 /* included directly within the component and *not* export external */ 181 /* function names. This allows you to link any program with FreeType */ 182 /* _and_ ZLib without linking conflicts. */ 183 /* */ 184 /* Do not #undef this macro here since the build system might define */ 185 /* it for certain configurations only. */ 186 /* */ 187 /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */ 188 189 190 /*************************************************************************/ 191 /* */ 192 /* Bzip2-compressed file support. */ 193 /* */ 194 /* FreeType now handles font files that have been compressed with the */ 195 /* `bzip2' program. This is mostly used to parse many of the PCF */ 196 /* files that come with XFree86. The implementation uses `libbz2' to */ 197 /* partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */ 198 /* Contrary to gzip, bzip2 currently is not included and need to use */ 199 /* the system available bzip2 implementation. */ 200 /* */ 201 /* Define this macro if you want to enable this `feature'. */ 202 /* */ 203 /* #define FT_CONFIG_OPTION_USE_BZIP2 */ 204 205 206 /*************************************************************************/ 207 /* */ 208 /* Define to disable the use of file stream functions and types, FILE, */ 209 /* fopen() etc. Enables the use of smaller system libraries on embedded */ 210 /* systems that have multiple system libraries, some with or without */ 211 /* file stream support, in the cases where file stream support is not */ 212 /* necessary such as memory loading of font files. */ 213 /* */ 214 /* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */ 215 216 217 /*************************************************************************/ 218 /* */ 219 /* DLL export compilation */ 220 /* */ 221 /* When compiling FreeType as a DLL, some systems/compilers need a */ 222 /* special keyword in front OR after the return type of function */ 223 /* declarations. */ 224 /* */ 225 /* Two macros are used within the FreeType source code to define */ 226 /* exported library functions: FT_EXPORT and FT_EXPORT_DEF. */ 227 /* */ 228 /* FT_EXPORT( return_type ) */ 229 /* */ 230 /* is used in a function declaration, as in */ 231 /* */ 232 /* FT_EXPORT( FT_Error ) */ 233 /* FT_Init_FreeType( FT_Library* alibrary ); */ 234 /* */ 235 /* */ 236 /* FT_EXPORT_DEF( return_type ) */ 237 /* */ 238 /* is used in a function definition, as in */ 239 /* */ 240 /* FT_EXPORT_DEF( FT_Error ) */ 241 /* FT_Init_FreeType( FT_Library* alibrary ) */ 242 /* { */ 243 /* ... some code ... */ 244 /* return FT_Err_Ok; */ 245 /* } */ 246 /* */ 247 /* You can provide your own implementation of FT_EXPORT and */ 248 /* FT_EXPORT_DEF here if you want. If you leave them undefined, they */ 249 /* will be later automatically defined as `extern return_type' to */ 250 /* allow normal compilation. */ 251 /* */ 252 /* Do not #undef these macros here since the build system might define */ 253 /* them for certain configurations only. */ 254 /* */ 255 /* #define FT_EXPORT(x) extern x */ 256 /* #define FT_EXPORT_DEF(x) x */ 257 258 259 /*************************************************************************/ 260 /* */ 261 /* Glyph Postscript Names handling */ 262 /* */ 263 /* By default, FreeType 2 is compiled with the `psnames' module. This */ 264 /* module is in charge of converting a glyph name string into a */ 265 /* Unicode value, or return a Macintosh standard glyph name for the */ 266 /* use with the TrueType `post' table. */ 267 /* */ 268 /* Undefine this macro if you do not want `psnames' compiled in your */ 269 /* build of FreeType. This has the following effects: */ 270 /* */ 271 /* - The TrueType driver will provide its own set of glyph names, */ 272 /* if you build it to support postscript names in the TrueType */ 273 /* `post' table. */ 274 /* */ 275 /* - The Type 1 driver will not be able to synthesize a Unicode */ 276 /* charmap out of the glyphs found in the fonts. */ 277 /* */ 278 /* You would normally undefine this configuration macro when building */ 279 /* a version of FreeType that doesn't contain a Type 1 or CFF driver. */ 280 /* */ 281 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES 282 283 284 /*************************************************************************/ 285 /* */ 286 /* Postscript Names to Unicode Values support */ 287 /* */ 288 /* By default, FreeType 2 is built with the `PSNames' module compiled */ 289 /* in. Among other things, the module is used to convert a glyph name */ 290 /* into a Unicode value. This is especially useful in order to */ 291 /* synthesize on the fly a Unicode charmap from the CFF/Type 1 driver */ 292 /* through a big table named the `Adobe Glyph List' (AGL). */ 293 /* */ 294 /* Undefine this macro if you do not want the Adobe Glyph List */ 295 /* compiled in your `PSNames' module. The Type 1 driver will not be */ 296 /* able to synthesize a Unicode charmap out of the glyphs found in the */ 297 /* fonts. */ 298 /* */ 299 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST 300 301 302 /*************************************************************************/ 303 /* */ 304 /* Support for Mac fonts */ 305 /* */ 306 /* Define this macro if you want support for outline fonts in Mac */ 307 /* format (mac dfont, mac resource, macbinary containing a mac */ 308 /* resource) on non-Mac platforms. */ 309 /* */ 310 /* Note that the `FOND' resource isn't checked. */ 311 /* */ 312 #define FT_CONFIG_OPTION_MAC_FONTS 313 314 315 /*************************************************************************/ 316 /* */ 317 /* Guessing methods to access embedded resource forks */ 318 /* */ 319 /* Enable extra Mac fonts support on non-Mac platforms (e.g. */ 320 /* GNU/Linux). */ 321 /* */ 322 /* Resource forks which include fonts data are stored sometimes in */ 323 /* locations which users or developers don't expected. In some cases, */ 324 /* resource forks start with some offset from the head of a file. In */ 325 /* other cases, the actual resource fork is stored in file different */ 326 /* from what the user specifies. If this option is activated, */ 327 /* FreeType tries to guess whether such offsets or different file */ 328 /* names must be used. */ 329 /* */ 330 /* Note that normal, direct access of resource forks is controlled via */ 331 /* the FT_CONFIG_OPTION_MAC_FONTS option. */ 332 /* */ 333 #ifdef FT_CONFIG_OPTION_MAC_FONTS 334 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK 335 #endif 336 337 338 /*************************************************************************/ 339 /* */ 340 /* Allow the use of FT_Incremental_Interface to load typefaces that */ 341 /* contain no glyph data, but supply it via a callback function. */ 342 /* This is required by clients supporting document formats which */ 343 /* supply font data incrementally as the document is parsed, such */ 344 /* as the Ghostscript interpreter for the PostScript language. */ 345 /* */ 346 /* #define FT_CONFIG_OPTION_INCREMENTAL */ 347 348 349 /*************************************************************************/ 350 /* */ 351 /* The size in bytes of the render pool used by the scan-line converter */ 352 /* to do all of its work. */ 353 /* */ 354 /* This must be greater than 4KByte if you use FreeType to rasterize */ 355 /* glyphs; otherwise, you may set it to zero to avoid unnecessary */ 356 /* allocation of the render pool. */ 357 /* */ 358 #define FT_RENDER_POOL_SIZE 16384L 359 360 361 /*************************************************************************/ 362 /* */ 363 /* FT_MAX_MODULES */ 364 /* */ 365 /* The maximum number of modules that can be registered in a single */ 366 /* FreeType library object. 32 is the default. */ 367 /* */ 368 #define FT_MAX_MODULES 32 369 370 371 /*************************************************************************/ 372 /* */ 373 /* Debug level */ 374 /* */ 375 /* FreeType can be compiled in debug or trace mode. In debug mode, */ 376 /* errors are reported through the `ftdebug' component. In trace */ 377 /* mode, additional messages are sent to the standard output during */ 378 /* execution. */ 379 /* */ 380 /* Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. */ 381 /* Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. */ 382 /* */ 383 /* Don't define any of these macros to compile in `release' mode! */ 384 /* */ 385 /* Do not #undef these macros here since the build system might define */ 386 /* them for certain configurations only. */ 387 /* */ 388 /* #define FT_DEBUG_LEVEL_ERROR */ 389 /* #define FT_DEBUG_LEVEL_TRACE */ 390 391 392 /*************************************************************************/ 393 /* */ 394 /* Autofitter debugging */ 395 /* */ 396 /* If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to */ 397 /* control the autofitter behaviour for debugging purposes with global */ 398 /* boolean variables (consequently, you should *never* enable this */ 399 /* while compiling in `release' mode): */ 400 /* */ 401 /* _af_debug_disable_horz_hints */ 402 /* _af_debug_disable_vert_hints */ 403 /* _af_debug_disable_blue_hints */ 404 /* */ 405 /* Additionally, the following functions provide dumps of various */ 406 /* internal autofit structures to stdout (using `printf'): */ 407 /* */ 408 /* af_glyph_hints_dump_points */ 409 /* af_glyph_hints_dump_segments */ 410 /* af_glyph_hints_dump_edges */ 411 /* */ 412 /* As an argument, they use another global variable: */ 413 /* */ 414 /* _af_debug_hints */ 415 /* */ 416 /* Please have a look at the `ftgrid' demo program to see how those */ 417 /* variables and macros should be used. */ 418 /* */ 419 /* Do not #undef these macros here since the build system might define */ 420 /* them for certain configurations only. */ 421 /* */ 422 /* #define FT_DEBUG_AUTOFIT */ 423 424 425 /*************************************************************************/ 426 /* */ 427 /* Memory Debugging */ 428 /* */ 429 /* FreeType now comes with an integrated memory debugger that is */ 430 /* capable of detecting simple errors like memory leaks or double */ 431 /* deletes. To compile it within your build of the library, you */ 432 /* should define FT_DEBUG_MEMORY here. */ 433 /* */ 434 /* Note that the memory debugger is only activated at runtime when */ 435 /* when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */ 436 /* */ 437 /* Do not #undef this macro here since the build system might define */ 438 /* it for certain configurations only. */ 439 /* */ 440 /* #define FT_DEBUG_MEMORY */ 441 442 443 /*************************************************************************/ 444 /* */ 445 /* Module errors */ 446 /* */ 447 /* If this macro is set (which is _not_ the default), the higher byte */ 448 /* of an error code gives the module in which the error has occurred, */ 449 /* while the lower byte is the real error code. */ 450 /* */ 451 /* Setting this macro makes sense for debugging purposes only, since */ 452 /* it would break source compatibility of certain programs that use */ 453 /* FreeType 2. */ 454 /* */ 455 /* More details can be found in the files ftmoderr.h and fterrors.h. */ 456 /* */ 457 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS 458 459 460 /*************************************************************************/ 461 /* */ 462 /* Position Independent Code */ 463 /* */ 464 /* If this macro is set (which is _not_ the default), FreeType2 will */ 465 /* avoid creating constants that require address fixups. Instead the */ 466 /* constants will be moved into a struct and additional intialization */ 467 /* code will be used. */ 468 /* */ 469 /* Setting this macro is needed for systems that prohibit address */ 470 /* fixups, such as BREW. */ 471 /* */ 472 /* #define FT_CONFIG_OPTION_PIC */ 473 474 475 /*************************************************************************/ 476 /*************************************************************************/ 477 /**** ****/ 478 /**** S F N T D R I V E R C O N F I G U R A T I O N ****/ 479 /**** ****/ 480 /*************************************************************************/ 481 /*************************************************************************/ 482 483 484 /*************************************************************************/ 485 /* */ 486 /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support */ 487 /* embedded bitmaps in all formats using the SFNT module (namely */ 488 /* TrueType & OpenType). */ 489 /* */ 490 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS 491 492 493 /*************************************************************************/ 494 /* */ 495 /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to */ 496 /* load and enumerate the glyph Postscript names in a TrueType or */ 497 /* OpenType file. */ 498 /* */ 499 /* Note that when you do not compile the `PSNames' module by undefining */ 500 /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will */ 501 /* contain additional code used to read the PS Names table from a font. */ 502 /* */ 503 /* (By default, the module uses `PSNames' to extract glyph names.) */ 504 /* */ 505 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES 506 507 508 /*************************************************************************/ 509 /* */ 510 /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to */ 511 /* access the internal name table in a SFNT-based format like TrueType */ 512 /* or OpenType. The name table contains various strings used to */ 513 /* describe the font, like family name, copyright, version, etc. It */ 514 /* does not contain any glyph name though. */ 515 /* */ 516 /* Accessing SFNT names is done through the functions declared in */ 517 /* `freetype/ftsnames.h'. */ 518 /* */ 519 #define TT_CONFIG_OPTION_SFNT_NAMES 520 521 522 /*************************************************************************/ 523 /* */ 524 /* TrueType CMap support */ 525 /* */ 526 /* Here you can fine-tune which TrueType CMap table format shall be */ 527 /* supported. */ 528 #define TT_CONFIG_CMAP_FORMAT_0 529 #define TT_CONFIG_CMAP_FORMAT_2 530 #define TT_CONFIG_CMAP_FORMAT_4 531 #define TT_CONFIG_CMAP_FORMAT_6 532 #define TT_CONFIG_CMAP_FORMAT_8 533 #define TT_CONFIG_CMAP_FORMAT_10 534 #define TT_CONFIG_CMAP_FORMAT_12 535 #define TT_CONFIG_CMAP_FORMAT_13 536 #define TT_CONFIG_CMAP_FORMAT_14 537 538 539 /*************************************************************************/ 540 /*************************************************************************/ 541 /**** ****/ 542 /**** T R U E T Y P E D R I V E R C O N F I G U R A T I O N ****/ 543 /**** ****/ 544 /*************************************************************************/ 545 /*************************************************************************/ 546 547 /*************************************************************************/ 548 /* */ 549 /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */ 550 /* a bytecode interpreter in the TrueType driver. */ 551 /* */ 552 /* By undefining this, you will only compile the code necessary to load */ 553 /* TrueType glyphs without hinting. */ 554 /* */ 555 /* Do not #undef this macro here, since the build system might */ 556 /* define it for certain configurations only. */ 557 /* */ 558 /* #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER */ 559 560 561 /*************************************************************************/ 562 /* */ 563 /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */ 564 /* of the TrueType bytecode interpreter is used that doesn't implement */ 565 /* any of the patented opcodes and algorithms. The patents related to */ 566 /* TrueType hinting have expired worldwide since May 2010; this option */ 567 /* is now deprecated. */ 568 /* */ 569 /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* */ 570 /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, */ 571 /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */ 572 /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */ 573 /* */ 574 /* This macro is only useful for a small number of font files (mostly */ 575 /* for Asian scripts) that require bytecode interpretation to properly */ 576 /* load glyphs. For all other fonts, this produces unpleasant results, */ 577 /* thus the unpatented interpreter is never used to load glyphs from */ 578 /* TrueType fonts unless one of the following two options is used. */ 579 /* */ 580 /* - The unpatented interpreter is explicitly activated by the user */ 581 /* through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag */ 582 /* when opening the FT_Face. */ 583 /* */ 584 /* - FreeType detects that the FT_Face corresponds to one of the */ 585 /* `trick' fonts (e.g., `Mingliu') it knows about. The font engine */ 586 /* contains a hard-coded list of font names and other matching */ 587 /* parameters (see function `tt_face_init' in file */ 588 /* `src/truetype/ttobjs.c'). */ 589 /* */ 590 /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */ 591 /* */ 592 /* { */ 593 /* FT_Parameter parameter; */ 594 /* FT_Open_Args open_args; */ 595 /* */ 596 /* */ 597 /* parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING; */ 598 /* */ 599 /* open_args.flags = FT_OPEN_PATHNAME | FT_OPEN_PARAMS; */ 600 /* open_args.pathname = my_font_pathname; */ 601 /* open_args.num_params = 1; */ 602 /* open_args.params = ¶meter; */ 603 /* */ 604 /* error = FT_Open_Face( library, &open_args, index, &face ); */ 605 /* ... */ 606 /* } */ 607 /* */ 608 #define TT_CONFIG_OPTION_UNPATENTED_HINTING 609 610 611 /*************************************************************************/ 612 /* */ 613 /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType */ 614 /* bytecode interpreter with a huge switch statement, rather than a call */ 615 /* table. This results in smaller and faster code for a number of */ 616 /* architectures. */ 617 /* */ 618 /* Note however that on some compiler/processor combinations, undefining */ 619 /* this macro will generate faster, though larger, code. */ 620 /* */ 621 #define TT_CONFIG_OPTION_INTERPRETER_SWITCH 622 623 624 /*************************************************************************/ 625 /* */ 626 /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the */ 627 /* TrueType glyph loader to use Apple's definition of how to handle */ 628 /* component offsets in composite glyphs. */ 629 /* */ 630 /* Apple and MS disagree on the default behavior of component offsets */ 631 /* in composites. Apple says that they should be scaled by the scaling */ 632 /* factors in the transformation matrix (roughly, it's more complex) */ 633 /* while MS says they should not. OpenType defines two bits in the */ 634 /* composite flags array which can be used to disambiguate, but old */ 635 /* fonts will not have them. */ 636 /* */ 637 /* http://www.microsoft.com/typography/otspec/glyf.htm */ 638 /* http://fonts.apple.com/TTRefMan/RM06/Chap6glyf.html */ 639 /* */ 640 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED 641 642 643 /*************************************************************************/ 644 /* */ 645 /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */ 646 /* support for Apple's distortable font technology (fvar, gvar, cvar, */ 647 /* and avar tables). This has many similarities to Type 1 Multiple */ 648 /* Masters support. */ 649 /* */ 650 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT 651 652 653 /*************************************************************************/ 654 /* */ 655 /* Define TT_CONFIG_OPTION_BDF if you want to include support for */ 656 /* an embedded `BDF ' table within SFNT-based bitmap formats. */ 657 /* */ 658 #define TT_CONFIG_OPTION_BDF 659 660 661 /*************************************************************************/ 662 /*************************************************************************/ 663 /**** ****/ 664 /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/ 665 /**** ****/ 666 /*************************************************************************/ 667 /*************************************************************************/ 668 669 670 /*************************************************************************/ 671 /* */ 672 /* T1_MAX_DICT_DEPTH is the maximal depth of nest dictionaries and */ 673 /* arrays in the Type 1 stream (see t1load.c). A minimum of 4 is */ 674 /* required. */ 675 /* */ 676 #define T1_MAX_DICT_DEPTH 5 677 678 679 /*************************************************************************/ 680 /* */ 681 /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */ 682 /* calls during glyph loading. */ 683 /* */ 684 #define T1_MAX_SUBRS_CALLS 16 685 686 687 /*************************************************************************/ 688 /* */ 689 /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */ 690 /* minimum of 16 is required. */ 691 /* */ 692 /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */ 693 /* */ 694 #define T1_MAX_CHARSTRINGS_OPERANDS 256 695 696 697 /*************************************************************************/ 698 /* */ 699 /* Define this configuration macro if you want to prevent the */ 700 /* compilation of `t1afm', which is in charge of reading Type 1 AFM */ 701 /* files into an existing face. Note that if set, the T1 driver will be */ 702 /* unable to produce kerning distances. */ 703 /* */ 704 #undef T1_CONFIG_OPTION_NO_AFM 705 706 707 /*************************************************************************/ 708 /* */ 709 /* Define this configuration macro if you want to prevent the */ 710 /* compilation of the Multiple Masters font support in the Type 1 */ 711 /* driver. */ 712 /* */ 713 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT 714 715 716 /*************************************************************************/ 717 /*************************************************************************/ 718 /**** ****/ 719 /**** A U T O F I T M O D U L E C O N F I G U R A T I O N ****/ 720 /**** ****/ 721 /*************************************************************************/ 722 /*************************************************************************/ 723 724 725 /*************************************************************************/ 726 /* */ 727 /* Compile autofit module with CJK (Chinese, Japanese, Korean) script */ 728 /* support. */ 729 /* */ 730 #define AF_CONFIG_OPTION_CJK 731 732 /*************************************************************************/ 733 /* */ 734 /* Compile autofit module with Indic script support. */ 735 /* */ 736 #define AF_CONFIG_OPTION_INDIC 737 738 /*************************************************************************/ 739 /* */ 740 /* Compile autofit module with warp hinting. The idea of the warping */ 741 /* code is to slightly scale and shift a glyph within a single dimension */ 742 /* so that as much of its segments are aligned (more or less) on the */ 743 /* grid. To find out the optimal scaling and shifting value, various */ 744 /* parameter combinations are tried and scored. */ 745 /* */ 746 /* This experimental option is only active if the render mode is */ 747 /* FT_RENDER_MODE_LIGHT. */ 748 /* */ 749 /* #define AF_CONFIG_OPTION_USE_WARPER */ 750 751 /* */ 752 753 754 /* 755 * Define this variable if you want to keep the layout of internal 756 * structures that was used prior to FreeType 2.2. This also compiles in 757 * a few obsolete functions to avoid linking problems on typical Unix 758 * distributions. 759 * 760 * For embedded systems or building a new distribution from scratch, it 761 * is recommended to disable the macro since it reduces the library's code 762 * size and activates a few memory-saving optimizations as well. 763 */ 764 #define FT_CONFIG_OPTION_OLD_INTERNALS 765 766 767 /* 768 * To detect legacy cache-lookup call from a rogue client (<= 2.1.7), 769 * we restrict the number of charmaps in a font. The current API of 770 * FTC_CMapCache_Lookup() takes cmap_index & charcode, but old API 771 * takes charcode only. To determine the passed value is for cmap_index 772 * or charcode, the possible cmap_index is restricted not to exceed 773 * the minimum possible charcode by a rogue client. It is also very 774 * unlikely that a rogue client is interested in Unicode values 0 to 15. 775 * 776 * NOTE: The original threshold was 4 deduced from popular number of 777 * cmap subtables in UCS-4 TrueType fonts, but now it is not 778 * irregular for OpenType fonts to have more than 4 subtables, 779 * because variation selector subtables are available for Apple 780 * and Microsoft platforms. 781 */ 782 783 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS 784 #define FT_MAX_CHARMAP_CACHEABLE 15 785 #endif 786 787 788 /* 789 * This macro is defined if either unpatented or native TrueType 790 * hinting is requested by the definitions above. 791 */ 792 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 793 #define TT_USE_BYTECODE_INTERPRETER 794 #undef TT_CONFIG_OPTION_UNPATENTED_HINTING 795 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING 796 #define TT_USE_BYTECODE_INTERPRETER 797 #endif 798 799 FT_END_HEADER 800 801 802 #endif /* __FTOPTION_H__ */ 803 804 805 /* END */ 806
