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 /* VTK_FREETYPE_CHANGE added the #ifdef below */ 24 #ifdef _MSC_VER // MS dev 25 26 #pragma warning( disable : 4244 ) // conversion [...] possible loss of data 27 #pragma warning( disable : 4761 ) // integral size mismatch in argument; conversion supplied 28 #pragma warning( disable : 4306 ) // conversion from t1 to t2 of greater size 29 30 #if ( _MSC_VER >= 1300 ) // Visual studio .NET 31 32 #pragma warning( disable : 4267 ) // same 33 #pragma warning( disable : 4311 ) // same for pointer 34 #pragma warning( disable : 4312 ) // same for pointer 35 #pragma warning( disable : 4127 ) // conditional expression is constant 36 #pragma warning( disable : 4701 ) // local variable 'node' may be used without having been initialized 37 #pragma warning( disable : 4706 ) // assignment within conditional expression 38 #pragma warning( disable : 4054 ) // 'type cast' : from function pointer ... to data pointer ... 39 40 #endif /* _MSC_VER >= 1300 */ 41 #endif /* _MSC_VER */ 42 43 #include <vtkfreetype/include/ft2build.h> 44 45 46 FT_BEGIN_HEADER 47 48 /*************************************************************************/ 49 /* */ 50 /* USER-SELECTABLE CONFIGURATION MACROS */ 51 /* */ 52 /* This file contains the default configuration macro definitions for */ 53 /* a standard build of the FreeType library. There are three ways to */ 54 /* use this file to build project-specific versions of the library: */ 55 /* */ 56 /* - You can modify this file by hand, but this is not recommended in */ 57 /* cases where you would like to build several versions of the */ 58 /* library from a single source directory. */ 59 /* */ 60 /* - You can put a copy of this file in your build directory, more */ 61 /* precisely in `$BUILD/freetype/config/ftoption.h', where `$BUILD' */ 62 /* is the name of a directory that is included _before_ the FreeType */ 63 /* include path during compilation. */ 64 /* */ 65 /* The default FreeType Makefiles and Jamfiles use the build */ 66 /* directory `builds/<system>' by default, but you can easily change */ 67 /* that for your own projects. */ 68 /* */ 69 /* - Copy the file <ft2build.h> to `$BUILD/ft2build.h' and modify it */ 70 /* slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to */ 71 /* locate this file during the build. For example, */ 72 /* */ 73 /* #define FT_CONFIG_OPTIONS_H <myftoptions.h> */ 74 /* #include <freetype/config/ftheader.h> */ 75 /* */ 76 /* will use `$BUILD/myftoptions.h' instead of this file for macro */ 77 /* definitions. */ 78 /* */ 79 /* Note also that you can similarly pre-define the macro */ 80 /* FT_CONFIG_MODULES_H used to locate the file listing of the modules */ 81 /* that are statically linked to the library at compile time. By */ 82 /* default, this file is <freetype/config/ftmodule.h>. */ 83 /* */ 84 /* We highly recommend using the third method whenever possible. */ 85 /* */ 86 /*************************************************************************/ 87 88 89 /*************************************************************************/ 90 /*************************************************************************/ 91 /**** ****/ 92 /**** 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 ****/ 93 /**** ****/ 94 /*************************************************************************/ 95 /*************************************************************************/ 96 97 98 /*************************************************************************/ 99 /* */ 100 /* Uncomment the line below if you want to activate sub-pixel rendering */ 101 /* (a.k.a. LCD rendering, or ClearType) in this build of the library. */ 102 /* */ 103 /* Note that this feature is covered by several Microsoft patents */ 104 /* and should not be activated in any default build of the library. */ 105 /* */ 106 /* This macro has no impact on the FreeType API, only on its */ 107 /* _implementation_. For example, using FT_RENDER_MODE_LCD when calling */ 108 /* FT_Render_Glyph still generates a bitmap that is 3 times wider than */ 109 /* the original size in case this macro isn't defined; however, each */ 110 /* triplet of subpixels has R=G=B. */ 111 /* */ 112 /* This is done to allow FreeType clients to run unmodified, forcing */ 113 /* them to display normal gray-level anti-aliased glyphs. */ 114 /* */ 115 /* #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING */ 116 117 118 /*************************************************************************/ 119 /* */ 120 /* Many compilers provide a non-ANSI 64-bit data type that can be used */ 121 /* by FreeType to speed up some computations. However, this will create */ 122 /* some problems when compiling the library in strict ANSI mode. */ 123 /* */ 124 /* For this reason, the use of 64-bit integers is normally disabled when */ 125 /* the __STDC__ macro is defined. You can however disable this by */ 126 /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here. */ 127 /* */ 128 /* For most compilers, this will only create compilation warnings when */ 129 /* building the library. */ 130 /* */ 131 /* ObNote: The compiler-specific 64-bit integers are detected in the */ 132 /* file `ftconfig.h' either statically or through the */ 133 /* `configure' script on supported platforms. */ 134 /* */ 135 #undef FT_CONFIG_OPTION_FORCE_INT64 136 137 138 /*************************************************************************/ 139 /* */ 140 /* If this macro is defined, do not try to use an assembler version of */ 141 /* performance-critical functions (e.g. FT_MulFix). You should only do */ 142 /* that to verify that the assembler function works properly, or to */ 143 /* execute benchmark tests of the various implementations. */ 144 /* #define FT_CONFIG_OPTION_NO_ASSEMBLER */ 145 146 147 /*************************************************************************/ 148 /* */ 149 /* If this macro is defined, try to use an inlined assembler version of */ 150 /* the `FT_MulFix' function, which is a `hotspot' when loading and */ 151 /* hinting glyphs, and which should be executed as fast as possible. */ 152 /* */ 153 /* Note that if your compiler or CPU is not supported, this will default */ 154 /* to the standard and portable implementation found in `ftcalc.c'. */ 155 /* */ 156 /* VTK_FREETYPE_CHANGE commented out line */ 157 /* #define FT_CONFIG_OPTION_INLINE_MULFIX */ 158 159 160 /*************************************************************************/ 161 /* */ 162 /* LZW-compressed file support. */ 163 /* */ 164 /* FreeType now handles font files that have been compressed with the */ 165 /* `compress' program. This is mostly used to parse many of the PCF */ 166 /* files that come with various X11 distributions. The implementation */ 167 /* uses NetBSD's `zopen' to partially uncompress the file on the fly */ 168 /* (see src/lzw/ftgzip.c). */ 169 /* */ 170 /* Define this macro if you want to enable this `feature'. */ 171 /* */ 172 /* VTK_FREETYPE_CHANGE commented out line */ 173 /* #define FT_CONFIG_OPTION_USE_LZW */ 174 175 176 /*************************************************************************/ 177 /* */ 178 /* Gzip-compressed file support. */ 179 /* */ 180 /* FreeType now handles font files that have been compressed with the */ 181 /* `gzip' program. This is mostly used to parse many of the PCF files */ 182 /* that come with XFree86. The implementation uses `zlib' to */ 183 /* partially uncompress the file on the fly (see src/gzip/ftgzip.c). */ 184 /* */ 185 /* Define this macro if you want to enable this `feature'. See also */ 186 /* the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below. */ 187 /* */ 188 #define FT_CONFIG_OPTION_USE_ZLIB 189 190 191 /*************************************************************************/ 192 /* */ 193 /* ZLib library selection */ 194 /* */ 195 /* This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined. */ 196 /* It allows FreeType's `ftgzip' component to link to the system's */ 197 /* installation of the ZLib library. This is useful on systems like */ 198 /* Unix or VMS where it generally is already available. */ 199 /* */ 200 /* If you let it undefined, the component will use its own copy */ 201 /* of the zlib sources instead. These have been modified to be */ 202 /* included directly within the component and *not* export external */ 203 /* function names. This allows you to link any program with FreeType */ 204 /* _and_ ZLib without linking conflicts. */ 205 /* */ 206 /* Do not #undef this macro here since the build system might define */ 207 /* it for certain configurations only. */ 208 /* */ 209 /* VTK_FREETYPE_CHANGE uncommented line */ 210 #define FT_CONFIG_OPTION_SYSTEM_ZLIB 211 212 213 /*************************************************************************/ 214 /* */ 215 /* Bzip2-compressed file support. */ 216 /* */ 217 /* FreeType now handles font files that have been compressed with the */ 218 /* `bzip2' program. This is mostly used to parse many of the PCF */ 219 /* files that come with XFree86. The implementation uses `libbz2' to */ 220 /* partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */ 221 /* Contrary to gzip, bzip2 currently is not included and need to use */ 222 /* the system available bzip2 implementation. */ 223 /* */ 224 /* Define this macro if you want to enable this `feature'. */ 225 /* */ 226 /* #define FT_CONFIG_OPTION_USE_BZIP2 */ 227 228 229 /*************************************************************************/ 230 /* */ 231 /* Define to disable the use of file stream functions and types, FILE, */ 232 /* fopen() etc. Enables the use of smaller system libraries on embedded */ 233 /* systems that have multiple system libraries, some with or without */ 234 /* file stream support, in the cases where file stream support is not */ 235 /* necessary such as memory loading of font files. */ 236 /* */ 237 /* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */ 238 239 240 /*************************************************************************/ 241 /* */ 242 /* DLL export compilation */ 243 /* */ 244 /* When compiling FreeType as a DLL, some systems/compilers need a */ 245 /* special keyword in front OR after the return type of function */ 246 /* declarations. */ 247 /* */ 248 /* Two macros are used within the FreeType source code to define */ 249 /* exported library functions: FT_EXPORT and FT_EXPORT_DEF. */ 250 /* */ 251 /* FT_EXPORT( return_type ) */ 252 /* */ 253 /* is used in a function declaration, as in */ 254 /* */ 255 /* FT_EXPORT( FT_Error ) */ 256 /* FT_Init_FreeType( FT_Library* alibrary ); */ 257 /* */ 258 /* */ 259 /* FT_EXPORT_DEF( return_type ) */ 260 /* */ 261 /* is used in a function definition, as in */ 262 /* */ 263 /* FT_EXPORT_DEF( FT_Error ) */ 264 /* FT_Init_FreeType( FT_Library* alibrary ) */ 265 /* { */ 266 /* ... some code ... */ 267 /* return FT_Err_Ok; */ 268 /* } */ 269 /* */ 270 /* You can provide your own implementation of FT_EXPORT and */ 271 /* FT_EXPORT_DEF here if you want. If you leave them undefined, they */ 272 /* will be later automatically defined as `extern return_type' to */ 273 /* allow normal compilation. */ 274 /* */ 275 /* Do not #undef these macros here since the build system might define */ 276 /* them for certain configurations only. */ 277 /* */ 278 /* #define FT_EXPORT(x) extern x */ 279 /* #define FT_EXPORT_DEF(x) x */ 280 281 /* VTK_FREETYPE_CHANGE added the #if below */ 282 #if defined(_WIN32) && !defined(VTKFREETYPE_STATIC) 283 # if defined(vtkfreetype_EXPORTS) 284 # define FT_EXPORT( x ) __declspec( dllexport ) x 285 # else 286 # define FT_EXPORT( x ) __declspec( dllimport ) x 287 # endif 288 #endif 289 290 /*************************************************************************/ 291 /* */ 292 /* Glyph Postscript Names handling */ 293 /* */ 294 /* By default, FreeType 2 is compiled with the `psnames' module. This */ 295 /* module is in charge of converting a glyph name string into a */ 296 /* Unicode value, or return a Macintosh standard glyph name for the */ 297 /* use with the TrueType `post' table. */ 298 /* */ 299 /* Undefine this macro if you do not want `psnames' compiled in your */ 300 /* build of FreeType. This has the following effects: */ 301 /* */ 302 /* - The TrueType driver will provide its own set of glyph names, */ 303 /* if you build it to support postscript names in the TrueType */ 304 /* `post' table. */ 305 /* */ 306 /* - The Type 1 driver will not be able to synthesize a Unicode */ 307 /* charmap out of the glyphs found in the fonts. */ 308 /* */ 309 /* You would normally undefine this configuration macro when building */ 310 /* a version of FreeType that doesn't contain a Type 1 or CFF driver. */ 311 /* */ 312 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES 313 314 315 /*************************************************************************/ 316 /* */ 317 /* Postscript Names to Unicode Values support */ 318 /* */ 319 /* By default, FreeType 2 is built with the `PSNames' module compiled */ 320 /* in. Among other things, the module is used to convert a glyph name */ 321 /* into a Unicode value. This is especially useful in order to */ 322 /* synthesize on the fly a Unicode charmap from the CFF/Type 1 driver */ 323 /* through a big table named the `Adobe Glyph List' (AGL). */ 324 /* */ 325 /* Undefine this macro if you do not want the Adobe Glyph List */ 326 /* compiled in your `PSNames' module. The Type 1 driver will not be */ 327 /* able to synthesize a Unicode charmap out of the glyphs found in the */ 328 /* fonts. */ 329 /* */ 330 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST 331 332 333 /*************************************************************************/ 334 /* */ 335 /* Support for Mac fonts */ 336 /* */ 337 /* Define this macro if you want support for outline fonts in Mac */ 338 /* format (mac dfont, mac resource, macbinary containing a mac */ 339 /* resource) on non-Mac platforms. */ 340 /* */ 341 /* Note that the `FOND' resource isn't checked. */ 342 /* */ 343 #define FT_CONFIG_OPTION_MAC_FONTS 344 345 346 /*************************************************************************/ 347 /* */ 348 /* Guessing methods to access embedded resource forks */ 349 /* */ 350 /* Enable extra Mac fonts support on non-Mac platforms (e.g. */ 351 /* GNU/Linux). */ 352 /* */ 353 /* Resource forks which include fonts data are stored sometimes in */ 354 /* locations which users or developers don't expected. In some cases, */ 355 /* resource forks start with some offset from the head of a file. In */ 356 /* other cases, the actual resource fork is stored in file different */ 357 /* from what the user specifies. If this option is activated, */ 358 /* FreeType tries to guess whether such offsets or different file */ 359 /* names must be used. */ 360 /* */ 361 /* Note that normal, direct access of resource forks is controlled via */ 362 /* the FT_CONFIG_OPTION_MAC_FONTS option. */ 363 /* */ 364 #ifdef FT_CONFIG_OPTION_MAC_FONTS 365 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK 366 #endif 367 368 369 /*************************************************************************/ 370 /* */ 371 /* Allow the use of FT_Incremental_Interface to load typefaces that */ 372 /* contain no glyph data, but supply it via a callback function. */ 373 /* This is required by clients supporting document formats which */ 374 /* supply font data incrementally as the document is parsed, such */ 375 /* as the Ghostscript interpreter for the PostScript language. */ 376 /* */ 377 #define FT_CONFIG_OPTION_INCREMENTAL 378 379 380 /*************************************************************************/ 381 /* */ 382 /* The size in bytes of the render pool used by the scan-line converter */ 383 /* to do all of its work. */ 384 /* */ 385 /* This must be greater than 4KByte if you use FreeType to rasterize */ 386 /* glyphs; otherwise, you may set it to zero to avoid unnecessary */ 387 /* allocation of the render pool. */ 388 /* */ 389 #define FT_RENDER_POOL_SIZE 16384L 390 391 392 /*************************************************************************/ 393 /* */ 394 /* FT_MAX_MODULES */ 395 /* */ 396 /* The maximum number of modules that can be registered in a single */ 397 /* FreeType library object. 32 is the default. */ 398 /* */ 399 #define FT_MAX_MODULES 32 400 401 402 /*************************************************************************/ 403 /* */ 404 /* Debug level */ 405 /* */ 406 /* FreeType can be compiled in debug or trace mode. In debug mode, */ 407 /* errors are reported through the `ftdebug' component. In trace */ 408 /* mode, additional messages are sent to the standard output during */ 409 /* execution. */ 410 /* */ 411 /* Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. */ 412 /* Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. */ 413 /* */ 414 /* Don't define any of these macros to compile in `release' mode! */ 415 /* */ 416 /* Do not #undef these macros here since the build system might define */ 417 /* them for certain configurations only. */ 418 /* */ 419 /* #define FT_DEBUG_LEVEL_ERROR */ 420 /* #define FT_DEBUG_LEVEL_TRACE */ 421 422 423 /*************************************************************************/ 424 /* */ 425 /* Autofitter debugging */ 426 /* */ 427 /* If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to */ 428 /* control the autofitter behaviour for debugging purposes with global */ 429 /* boolean variables (consequently, you should *never* enable this */ 430 /* while compiling in `release' mode): */ 431 /* */ 432 /* _af_debug_disable_horz_hints */ 433 /* _af_debug_disable_vert_hints */ 434 /* _af_debug_disable_blue_hints */ 435 /* */ 436 /* Additionally, the following functions provide dumps of various */ 437 /* internal autofit structures to stdout (using `printf'): */ 438 /* */ 439 /* af_glyph_hints_dump_points */ 440 /* af_glyph_hints_dump_segments */ 441 /* af_glyph_hints_dump_edges */ 442 /* */ 443 /* As an argument, they use another global variable: */ 444 /* */ 445 /* _af_debug_hints */ 446 /* */ 447 /* Please have a look at the `ftgrid' demo program to see how those */ 448 /* variables and macros should be used. */ 449 /* */ 450 /* Do not #undef these macros here since the build system might define */ 451 /* them for certain configurations only. */ 452 /* */ 453 /* #define FT_DEBUG_AUTOFIT */ 454 455 456 /*************************************************************************/ 457 /* */ 458 /* Memory Debugging */ 459 /* */ 460 /* FreeType now comes with an integrated memory debugger that is */ 461 /* capable of detecting simple errors like memory leaks or double */ 462 /* deletes. To compile it within your build of the library, you */ 463 /* should define FT_DEBUG_MEMORY here. */ 464 /* */ 465 /* Note that the memory debugger is only activated at runtime when */ 466 /* when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */ 467 /* */ 468 /* Do not #undef this macro here since the build system might define */ 469 /* it for certain configurations only. */ 470 /* */ 471 /* #define FT_DEBUG_MEMORY */ 472 473 474 /*************************************************************************/ 475 /* */ 476 /* Module errors */ 477 /* */ 478 /* If this macro is set (which is _not_ the default), the higher byte */ 479 /* of an error code gives the module in which the error has occurred, */ 480 /* while the lower byte is the real error code. */ 481 /* */ 482 /* Setting this macro makes sense for debugging purposes only, since */ 483 /* it would break source compatibility of certain programs that use */ 484 /* FreeType 2. */ 485 /* */ 486 /* More details can be found in the files ftmoderr.h and fterrors.h. */ 487 /* */ 488 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS 489 490 491 /*************************************************************************/ 492 /* */ 493 /* Position Independent Code */ 494 /* */ 495 /* If this macro is set (which is _not_ the default), FreeType2 will */ 496 /* avoid creating constants that require address fixups. Instead the */ 497 /* constants will be moved into a struct and additional intialization */ 498 /* code will be used. */ 499 /* */ 500 /* Setting this macro is needed for systems that prohibit address */ 501 /* fixups, such as BREW. */ 502 /* */ 503 /* #define FT_CONFIG_OPTION_PIC */ 504 505 506 /*************************************************************************/ 507 /*************************************************************************/ 508 /**** ****/ 509 /**** S F N T D R I V E R C O N F I G U R A T I O N ****/ 510 /**** ****/ 511 /*************************************************************************/ 512 /*************************************************************************/ 513 514 515 /*************************************************************************/ 516 /* */ 517 /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support */ 518 /* embedded bitmaps in all formats using the SFNT module (namely */ 519 /* TrueType & OpenType). */ 520 /* */ 521 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS 522 523 524 /*************************************************************************/ 525 /* */ 526 /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to */ 527 /* load and enumerate the glyph Postscript names in a TrueType or */ 528 /* OpenType file. */ 529 /* */ 530 /* Note that when you do not compile the `PSNames' module by undefining */ 531 /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will */ 532 /* contain additional code used to read the PS Names table from a font. */ 533 /* */ 534 /* (By default, the module uses `PSNames' to extract glyph names.) */ 535 /* */ 536 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES 537 538 539 /*************************************************************************/ 540 /* */ 541 /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to */ 542 /* access the internal name table in a SFNT-based format like TrueType */ 543 /* or OpenType. The name table contains various strings used to */ 544 /* describe the font, like family name, copyright, version, etc. It */ 545 /* does not contain any glyph name though. */ 546 /* */ 547 /* Accessing SFNT names is done through the functions declared in */ 548 /* `freetype/ftsnames.h'. */ 549 /* */ 550 #define TT_CONFIG_OPTION_SFNT_NAMES 551 552 553 /*************************************************************************/ 554 /* */ 555 /* TrueType CMap support */ 556 /* */ 557 /* Here you can fine-tune which TrueType CMap table format shall be */ 558 /* supported. */ 559 #define TT_CONFIG_CMAP_FORMAT_0 560 #define TT_CONFIG_CMAP_FORMAT_2 561 #define TT_CONFIG_CMAP_FORMAT_4 562 #define TT_CONFIG_CMAP_FORMAT_6 563 #define TT_CONFIG_CMAP_FORMAT_8 564 #define TT_CONFIG_CMAP_FORMAT_10 565 #define TT_CONFIG_CMAP_FORMAT_12 566 #define TT_CONFIG_CMAP_FORMAT_13 567 #define TT_CONFIG_CMAP_FORMAT_14 568 569 570 /*************************************************************************/ 571 /*************************************************************************/ 572 /**** ****/ 573 /**** 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 ****/ 574 /**** ****/ 575 /*************************************************************************/ 576 /*************************************************************************/ 577 578 /*************************************************************************/ 579 /* */ 580 /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */ 581 /* a bytecode interpreter in the TrueType driver. */ 582 /* */ 583 /* By undefining this, you will only compile the code necessary to load */ 584 /* TrueType glyphs without hinting. */ 585 /* */ 586 /* Do not #undef this macro here, since the build system might */ 587 /* define it for certain configurations only. */ 588 /* */ 589 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER 590 591 592 /*************************************************************************/ 593 /* */ 594 /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */ 595 /* of the TrueType bytecode interpreter is used that doesn't implement */ 596 /* any of the patented opcodes and algorithms. The patents related to */ 597 /* TrueType hinting have expired worldwide since May 2010; this option */ 598 /* is now deprecated. */ 599 /* */ 600 /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* */ 601 /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, */ 602 /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */ 603 /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */ 604 /* */ 605 /* This macro is only useful for a small number of font files (mostly */ 606 /* for Asian scripts) that require bytecode interpretation to properly */ 607 /* load glyphs. For all other fonts, this produces unpleasant results, */ 608 /* thus the unpatented interpreter is never used to load glyphs from */ 609 /* TrueType fonts unless one of the following two options is used. */ 610 /* */ 611 /* - The unpatented interpreter is explicitly activated by the user */ 612 /* through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag */ 613 /* when opening the FT_Face. */ 614 /* */ 615 /* - FreeType detects that the FT_Face corresponds to one of the */ 616 /* `trick' fonts (e.g., `Mingliu') it knows about. The font engine */ 617 /* contains a hard-coded list of font names and other matching */ 618 /* parameters (see function `tt_face_init' in file */ 619 /* `src/truetype/ttobjs.c'). */ 620 /* */ 621 /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */ 622 /* */ 623 /* { */ 624 /* FT_Parameter parameter; */ 625 /* FT_Open_Args open_args; */ 626 /* */ 627 /* */ 628 /* parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING; */ 629 /* */ 630 /* open_args.flags = FT_OPEN_PATHNAME | FT_OPEN_PARAMS; */ 631 /* open_args.pathname = my_font_pathname; */ 632 /* open_args.num_params = 1; */ 633 /* open_args.params = ¶meter; */ 634 /* */ 635 /* error = FT_Open_Face( library, &open_args, index, &face ); */ 636 /* ... */ 637 /* } */ 638 /* */ 639 /* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */ 640 641 642 /*************************************************************************/ 643 /* */ 644 /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType */ 645 /* bytecode interpreter with a huge switch statement, rather than a call */ 646 /* table. This results in smaller and faster code for a number of */ 647 /* architectures. */ 648 /* */ 649 /* Note however that on some compiler/processor combinations, undefining */ 650 /* this macro will generate faster, though larger, code. */ 651 /* */ 652 #define TT_CONFIG_OPTION_INTERPRETER_SWITCH 653 654 655 /*************************************************************************/ 656 /* */ 657 /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the */ 658 /* TrueType glyph loader to use Apple's definition of how to handle */ 659 /* component offsets in composite glyphs. */ 660 /* */ 661 /* Apple and MS disagree on the default behavior of component offsets */ 662 /* in composites. Apple says that they should be scaled by the scaling */ 663 /* factors in the transformation matrix (roughly, it's more complex) */ 664 /* while MS says they should not. OpenType defines two bits in the */ 665 /* composite flags array which can be used to disambiguate, but old */ 666 /* fonts will not have them. */ 667 /* */ 668 /* http://www.microsoft.com/typography/otspec/glyf.htm */ 669 /* http://fonts.apple.com/TTRefMan/RM06/Chap6glyf.html */ 670 /* */ 671 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED 672 673 674 /*************************************************************************/ 675 /* */ 676 /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */ 677 /* support for Apple's distortable font technology (fvar, gvar, cvar, */ 678 /* and avar tables). This has many similarities to Type 1 Multiple */ 679 /* Masters support. */ 680 /* */ 681 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT 682 683 684 /*************************************************************************/ 685 /* */ 686 /* Define TT_CONFIG_OPTION_BDF if you want to include support for */ 687 /* an embedded `BDF ' table within SFNT-based bitmap formats. */ 688 /* */ 689 #define TT_CONFIG_OPTION_BDF 690 691 692 /*************************************************************************/ 693 /*************************************************************************/ 694 /**** ****/ 695 /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/ 696 /**** ****/ 697 /*************************************************************************/ 698 /*************************************************************************/ 699 700 701 /*************************************************************************/ 702 /* */ 703 /* T1_MAX_DICT_DEPTH is the maximal depth of nest dictionaries and */ 704 /* arrays in the Type 1 stream (see t1load.c). A minimum of 4 is */ 705 /* required. */ 706 /* */ 707 #define T1_MAX_DICT_DEPTH 5 708 709 710 /*************************************************************************/ 711 /* */ 712 /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */ 713 /* calls during glyph loading. */ 714 /* */ 715 #define T1_MAX_SUBRS_CALLS 16 716 717 718 /*************************************************************************/ 719 /* */ 720 /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */ 721 /* minimum of 16 is required. */ 722 /* */ 723 /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */ 724 /* */ 725 #define T1_MAX_CHARSTRINGS_OPERANDS 256 726 727 728 /*************************************************************************/ 729 /* */ 730 /* Define this configuration macro if you want to prevent the */ 731 /* compilation of `t1afm', which is in charge of reading Type 1 AFM */ 732 /* files into an existing face. Note that if set, the T1 driver will be */ 733 /* unable to produce kerning distances. */ 734 /* */ 735 #undef T1_CONFIG_OPTION_NO_AFM 736 737 738 /*************************************************************************/ 739 /* */ 740 /* Define this configuration macro if you want to prevent the */ 741 /* compilation of the Multiple Masters font support in the Type 1 */ 742 /* driver. */ 743 /* */ 744 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT 745 746 747 /*************************************************************************/ 748 /*************************************************************************/ 749 /**** ****/ 750 /**** 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 ****/ 751 /**** ****/ 752 /*************************************************************************/ 753 /*************************************************************************/ 754 755 756 /*************************************************************************/ 757 /* */ 758 /* Compile autofit module with CJK (Chinese, Japanese, Korean) script */ 759 /* support. */ 760 /* */ 761 #define AF_CONFIG_OPTION_CJK 762 763 /*************************************************************************/ 764 /* */ 765 /* Compile autofit module with Indic script support. */ 766 /* */ 767 #define AF_CONFIG_OPTION_INDIC 768 769 /*************************************************************************/ 770 /* */ 771 /* Compile autofit module with warp hinting. The idea of the warping */ 772 /* code is to slightly scale and shift a glyph within a single dimension */ 773 /* so that as much of its segments are aligned (more or less) on the */ 774 /* grid. To find out the optimal scaling and shifting value, various */ 775 /* parameter combinations are tried and scored. */ 776 /* */ 777 /* This experimental option is only active if the render mode is */ 778 /* FT_RENDER_MODE_LIGHT. */ 779 /* */ 780 /* #define AF_CONFIG_OPTION_USE_WARPER */ 781 782 /* */ 783 784 785 /* 786 * Define this variable if you want to keep the layout of internal 787 * structures that was used prior to FreeType 2.2. This also compiles in 788 * a few obsolete functions to avoid linking problems on typical Unix 789 * distributions. 790 * 791 * For embedded systems or building a new distribution from scratch, it 792 * is recommended to disable the macro since it reduces the library's code 793 * size and activates a few memory-saving optimizations as well. 794 */ 795 /* VTK_FREETYPE_CHANGE commented out line */ 796 /* #define FT_CONFIG_OPTION_OLD_INTERNALS */ 797 798 799 /* 800 * To detect legacy cache-lookup call from a rogue client (<= 2.1.7), 801 * we restrict the number of charmaps in a font. The current API of 802 * FTC_CMapCache_Lookup() takes cmap_index & charcode, but old API 803 * takes charcode only. To determine the passed value is for cmap_index 804 * or charcode, the possible cmap_index is restricted not to exceed 805 * the minimum possible charcode by a rogue client. It is also very 806 * unlikely that a rogue client is interested in Unicode values 0 to 15. 807 * 808 * NOTE: The original threshold was 4 deduced from popular number of 809 * cmap subtables in UCS-4 TrueType fonts, but now it is not 810 * irregular for OpenType fonts to have more than 4 subtables, 811 * because variation selector subtables are available for Apple 812 * and Microsoft platforms. 813 */ 814 815 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS 816 #define FT_MAX_CHARMAP_CACHEABLE 15 817 #endif 818 819 820 /* 821 * This macro is defined if either unpatented or native TrueType 822 * hinting is requested by the definitions above. 823 */ 824 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 825 #define TT_USE_BYTECODE_INTERPRETER 826 #undef TT_CONFIG_OPTION_UNPATENTED_HINTING 827 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING 828 #define TT_USE_BYTECODE_INTERPRETER 829 #endif 830 831 FT_END_HEADER 832 833 834 #endif /* __FTOPTION_H__ */ 835 836 837 /* END */ 838