1 /***************************************************************************/ 2 /* */ 3 /* ftoption.h */ 4 /* */ 5 /* User-selectable configuration macros (specification only). */ 6 /* */ 7 /* Copyright 1996-2016 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 /* If you enable this configuration option, FreeType recognizes an */ 81 /* environment variable called `FREETYPE_PROPERTIES', which can be used */ 82 /* to control the various font drivers and modules. The controllable */ 83 /* properties are listed in the section `Controlling FreeType Modules' */ 84 /* in the reference's table of contents; currently there are properties */ 85 /* for the auto-hinter (file `ftautoh.h'), CFF (file `ftcffdrv.h'), and */ 86 /* TrueType (file `ftttdrv.h'). */ 87 /* */ 88 /* `FREETYPE_PROPERTIES' has the following syntax form (broken here into */ 89 /* multiple lines for better readability). */ 90 /* */ 91 /* <optional whitespace> */ 92 /* <module-name1> ':' */ 93 /* <property-name1> '=' <property-value1> */ 94 /* <whitespace> */ 95 /* <module-name2> ':' */ 96 /* <property-name2> '=' <property-value2> */ 97 /* ... */ 98 /* */ 99 /* Example: */ 100 /* */ 101 /* FREETYPE_PROPERTIES=truetype:interpreter-version=35 \ */ 102 /* cff:no-stem-darkening=1 \ */ 103 /* autofitter:warping=1 */ 104 /* */ 105 /* #define FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES */ 106 107 108 /*************************************************************************/ 109 /* */ 110 /* Uncomment the line below if you want to activate sub-pixel rendering */ 111 /* (a.k.a. LCD rendering, or ClearType) in this build of the library. */ 112 /* */ 113 /* Note that this feature is covered by several Microsoft patents */ 114 /* and should not be activated in any default build of the library. */ 115 /* */ 116 /* This macro has no impact on the FreeType API, only on its */ 117 /* _implementation_. For example, using FT_RENDER_MODE_LCD when calling */ 118 /* FT_Render_Glyph still generates a bitmap that is 3 times wider than */ 119 /* the original size in case this macro isn't defined; however, each */ 120 /* triplet of subpixels has R=G=B. */ 121 /* */ 122 /* This is done to allow FreeType clients to run unmodified, forcing */ 123 /* them to display normal gray-level anti-aliased glyphs. */ 124 /* */ 125 /* #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING */ 126 127 128 /*************************************************************************/ 129 /* */ 130 /* Many compilers provide a non-ANSI 64-bit data type that can be used */ 131 /* by FreeType to speed up some computations. However, this will create */ 132 /* some problems when compiling the library in strict ANSI mode. */ 133 /* */ 134 /* For this reason, the use of 64-bit integers is normally disabled when */ 135 /* the __STDC__ macro is defined. You can however disable this by */ 136 /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here. */ 137 /* */ 138 /* For most compilers, this will only create compilation warnings when */ 139 /* building the library. */ 140 /* */ 141 /* ObNote: The compiler-specific 64-bit integers are detected in the */ 142 /* file `ftconfig.h' either statically or through the */ 143 /* `configure' script on supported platforms. */ 144 /* */ 145 #undef FT_CONFIG_OPTION_FORCE_INT64 146 147 148 /*************************************************************************/ 149 /* */ 150 /* If this macro is defined, do not try to use an assembler version of */ 151 /* performance-critical functions (e.g. FT_MulFix). You should only do */ 152 /* that to verify that the assembler function works properly, or to */ 153 /* execute benchmark tests of the various implementations. */ 154 /* #define FT_CONFIG_OPTION_NO_ASSEMBLER */ 155 156 157 /*************************************************************************/ 158 /* */ 159 /* If this macro is defined, try to use an inlined assembler version of */ 160 /* the `FT_MulFix' function, which is a `hotspot' when loading and */ 161 /* hinting glyphs, and which should be executed as fast as possible. */ 162 /* */ 163 /* Note that if your compiler or CPU is not supported, this will default */ 164 /* to the standard and portable implementation found in `ftcalc.c'. */ 165 /* */ 166 #define FT_CONFIG_OPTION_INLINE_MULFIX 167 168 169 /*************************************************************************/ 170 /* */ 171 /* LZW-compressed file support. */ 172 /* */ 173 /* FreeType now handles font files that have been compressed with the */ 174 /* `compress' program. This is mostly used to parse many of the PCF */ 175 /* files that come with various X11 distributions. The implementation */ 176 /* uses NetBSD's `zopen' to partially uncompress the file on the fly */ 177 /* (see src/lzw/ftgzip.c). */ 178 /* */ 179 /* Define this macro if you want to enable this `feature'. */ 180 /* */ 181 #define FT_CONFIG_OPTION_USE_LZW 182 183 184 /*************************************************************************/ 185 /* */ 186 /* Gzip-compressed file support. */ 187 /* */ 188 /* FreeType now handles font files that have been compressed with the */ 189 /* `gzip' program. This is mostly used to parse many of the PCF files */ 190 /* that come with XFree86. The implementation uses `zlib' to */ 191 /* partially uncompress the file on the fly (see src/gzip/ftgzip.c). */ 192 /* */ 193 /* Define this macro if you want to enable this `feature'. See also */ 194 /* the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below. */ 195 /* */ 196 #define FT_CONFIG_OPTION_USE_ZLIB 197 198 199 /*************************************************************************/ 200 /* */ 201 /* ZLib library selection */ 202 /* */ 203 /* This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined. */ 204 /* It allows FreeType's `ftgzip' component to link to the system's */ 205 /* installation of the ZLib library. This is useful on systems like */ 206 /* Unix or VMS where it generally is already available. */ 207 /* */ 208 /* If you let it undefined, the component will use its own copy */ 209 /* of the zlib sources instead. These have been modified to be */ 210 /* included directly within the component and *not* export external */ 211 /* function names. This allows you to link any program with FreeType */ 212 /* _and_ ZLib without linking conflicts. */ 213 /* */ 214 /* Do not #undef this macro here since the build system might define */ 215 /* it for certain configurations only. */ 216 /* */ 217 /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */ 218 219 220 /*************************************************************************/ 221 /* */ 222 /* Bzip2-compressed file support. */ 223 /* */ 224 /* FreeType now handles font files that have been compressed with the */ 225 /* `bzip2' program. This is mostly used to parse many of the PCF */ 226 /* files that come with XFree86. The implementation uses `libbz2' to */ 227 /* partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */ 228 /* Contrary to gzip, bzip2 currently is not included and need to use */ 229 /* the system available bzip2 implementation. */ 230 /* */ 231 /* Define this macro if you want to enable this `feature'. */ 232 /* */ 233 /* #define FT_CONFIG_OPTION_USE_BZIP2 */ 234 235 236 /*************************************************************************/ 237 /* */ 238 /* Define to disable the use of file stream functions and types, FILE, */ 239 /* fopen() etc. Enables the use of smaller system libraries on embedded */ 240 /* systems that have multiple system libraries, some with or without */ 241 /* file stream support, in the cases where file stream support is not */ 242 /* necessary such as memory loading of font files. */ 243 /* */ 244 /* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */ 245 246 247 /*************************************************************************/ 248 /* */ 249 /* PNG bitmap support. */ 250 /* */ 251 /* FreeType now handles loading color bitmap glyphs in the PNG format. */ 252 /* This requires help from the external libpng library. Uncompressed */ 253 /* color bitmaps do not need any external libraries and will be */ 254 /* supported regardless of this configuration. */ 255 /* */ 256 /* Define this macro if you want to enable this `feature'. */ 257 /* */ 258 #define FT_CONFIG_OPTION_USE_PNG 259 260 261 /*************************************************************************/ 262 /* */ 263 /* HarfBuzz support. */ 264 /* */ 265 /* FreeType uses the HarfBuzz library to improve auto-hinting of */ 266 /* OpenType fonts. If available, many glyphs not directly addressable */ 267 /* by a font's character map will be hinted also. */ 268 /* */ 269 /* Define this macro if you want to enable this `feature'. */ 270 /* */ 271 /* #define FT_CONFIG_OPTION_USE_HARFBUZZ */ 272 273 274 /*************************************************************************/ 275 /* */ 276 /* DLL export compilation */ 277 /* */ 278 /* When compiling FreeType as a DLL, some systems/compilers need a */ 279 /* special keyword in front OR after the return type of function */ 280 /* declarations. */ 281 /* */ 282 /* Two macros are used within the FreeType source code to define */ 283 /* exported library functions: FT_EXPORT and FT_EXPORT_DEF. */ 284 /* */ 285 /* FT_EXPORT( return_type ) */ 286 /* */ 287 /* is used in a function declaration, as in */ 288 /* */ 289 /* FT_EXPORT( FT_Error ) */ 290 /* FT_Init_FreeType( FT_Library* alibrary ); */ 291 /* */ 292 /* */ 293 /* FT_EXPORT_DEF( return_type ) */ 294 /* */ 295 /* is used in a function definition, as in */ 296 /* */ 297 /* FT_EXPORT_DEF( FT_Error ) */ 298 /* FT_Init_FreeType( FT_Library* alibrary ) */ 299 /* { */ 300 /* ... some code ... */ 301 /* return FT_Err_Ok; */ 302 /* } */ 303 /* */ 304 /* You can provide your own implementation of FT_EXPORT and */ 305 /* FT_EXPORT_DEF here if you want. If you leave them undefined, they */ 306 /* will be later automatically defined as `extern return_type' to */ 307 /* allow normal compilation. */ 308 /* */ 309 /* Do not #undef these macros here since the build system might define */ 310 /* them for certain configurations only. */ 311 /* */ 312 /* #define FT_EXPORT(x) extern x */ 313 /* #define FT_EXPORT_DEF(x) x */ 314 315 316 /*************************************************************************/ 317 /* */ 318 /* Glyph Postscript Names handling */ 319 /* */ 320 /* By default, FreeType 2 is compiled with the `psnames' module. This */ 321 /* module is in charge of converting a glyph name string into a */ 322 /* Unicode value, or return a Macintosh standard glyph name for the */ 323 /* use with the TrueType `post' table. */ 324 /* */ 325 /* Undefine this macro if you do not want `psnames' compiled in your */ 326 /* build of FreeType. This has the following effects: */ 327 /* */ 328 /* - The TrueType driver will provide its own set of glyph names, */ 329 /* if you build it to support postscript names in the TrueType */ 330 /* `post' table. */ 331 /* */ 332 /* - The Type 1 driver will not be able to synthesize a Unicode */ 333 /* charmap out of the glyphs found in the fonts. */ 334 /* */ 335 /* You would normally undefine this configuration macro when building */ 336 /* a version of FreeType that doesn't contain a Type 1 or CFF driver. */ 337 /* */ 338 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES 339 340 341 /*************************************************************************/ 342 /* */ 343 /* Postscript Names to Unicode Values support */ 344 /* */ 345 /* By default, FreeType 2 is built with the `PSNames' module compiled */ 346 /* in. Among other things, the module is used to convert a glyph name */ 347 /* into a Unicode value. This is especially useful in order to */ 348 /* synthesize on the fly a Unicode charmap from the CFF/Type 1 driver */ 349 /* through a big table named the `Adobe Glyph List' (AGL). */ 350 /* */ 351 /* Undefine this macro if you do not want the Adobe Glyph List */ 352 /* compiled in your `PSNames' module. The Type 1 driver will not be */ 353 /* able to synthesize a Unicode charmap out of the glyphs found in the */ 354 /* fonts. */ 355 /* */ 356 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST 357 358 359 /*************************************************************************/ 360 /* */ 361 /* Support for Mac fonts */ 362 /* */ 363 /* Define this macro if you want support for outline fonts in Mac */ 364 /* format (mac dfont, mac resource, macbinary containing a mac */ 365 /* resource) on non-Mac platforms. */ 366 /* */ 367 /* Note that the `FOND' resource isn't checked. */ 368 /* */ 369 #define FT_CONFIG_OPTION_MAC_FONTS 370 371 372 /*************************************************************************/ 373 /* */ 374 /* Guessing methods to access embedded resource forks */ 375 /* */ 376 /* Enable extra Mac fonts support on non-Mac platforms (e.g. */ 377 /* GNU/Linux). */ 378 /* */ 379 /* Resource forks which include fonts data are stored sometimes in */ 380 /* locations which users or developers don't expected. In some cases, */ 381 /* resource forks start with some offset from the head of a file. In */ 382 /* other cases, the actual resource fork is stored in file different */ 383 /* from what the user specifies. If this option is activated, */ 384 /* FreeType tries to guess whether such offsets or different file */ 385 /* names must be used. */ 386 /* */ 387 /* Note that normal, direct access of resource forks is controlled via */ 388 /* the FT_CONFIG_OPTION_MAC_FONTS option. */ 389 /* */ 390 #ifdef FT_CONFIG_OPTION_MAC_FONTS 391 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK 392 #endif 393 394 395 /*************************************************************************/ 396 /* */ 397 /* Allow the use of FT_Incremental_Interface to load typefaces that */ 398 /* contain no glyph data, but supply it via a callback function. */ 399 /* This is required by clients supporting document formats which */ 400 /* supply font data incrementally as the document is parsed, such */ 401 /* as the Ghostscript interpreter for the PostScript language. */ 402 /* */ 403 /* #define FT_CONFIG_OPTION_INCREMENTAL */ 404 405 406 /*************************************************************************/ 407 /* */ 408 /* The size in bytes of the render pool used by the scan-line converter */ 409 /* to do all of its work. */ 410 /* */ 411 #define FT_RENDER_POOL_SIZE 16384L 412 413 414 /*************************************************************************/ 415 /* */ 416 /* FT_MAX_MODULES */ 417 /* */ 418 /* The maximum number of modules that can be registered in a single */ 419 /* FreeType library object. 32 is the default. */ 420 /* */ 421 #define FT_MAX_MODULES 32 422 423 424 /*************************************************************************/ 425 /* */ 426 /* Debug level */ 427 /* */ 428 /* FreeType can be compiled in debug or trace mode. In debug mode, */ 429 /* errors are reported through the `ftdebug' component. In trace */ 430 /* mode, additional messages are sent to the standard output during */ 431 /* execution. */ 432 /* */ 433 /* Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. */ 434 /* Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. */ 435 /* */ 436 /* Don't define any of these macros to compile in `release' mode! */ 437 /* */ 438 /* Do not #undef these macros here since the build system might define */ 439 /* them for certain configurations only. */ 440 /* */ 441 /* #define FT_DEBUG_LEVEL_ERROR */ 442 /* #define FT_DEBUG_LEVEL_TRACE */ 443 444 445 /*************************************************************************/ 446 /* */ 447 /* Autofitter debugging */ 448 /* */ 449 /* If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to */ 450 /* control the autofitter behaviour for debugging purposes with global */ 451 /* boolean variables (consequently, you should *never* enable this */ 452 /* while compiling in `release' mode): */ 453 /* */ 454 /* _af_debug_disable_horz_hints */ 455 /* _af_debug_disable_vert_hints */ 456 /* _af_debug_disable_blue_hints */ 457 /* */ 458 /* Additionally, the following functions provide dumps of various */ 459 /* internal autofit structures to stdout (using `printf'): */ 460 /* */ 461 /* af_glyph_hints_dump_points */ 462 /* af_glyph_hints_dump_segments */ 463 /* af_glyph_hints_dump_edges */ 464 /* af_glyph_hints_get_num_segments */ 465 /* af_glyph_hints_get_segment_offset */ 466 /* */ 467 /* As an argument, they use another global variable: */ 468 /* */ 469 /* _af_debug_hints */ 470 /* */ 471 /* Please have a look at the `ftgrid' demo program to see how those */ 472 /* variables and macros should be used. */ 473 /* */ 474 /* Do not #undef these macros here since the build system might define */ 475 /* them for certain configurations only. */ 476 /* */ 477 /* #define FT_DEBUG_AUTOFIT */ 478 479 480 /*************************************************************************/ 481 /* */ 482 /* Memory Debugging */ 483 /* */ 484 /* FreeType now comes with an integrated memory debugger that is */ 485 /* capable of detecting simple errors like memory leaks or double */ 486 /* deletes. To compile it within your build of the library, you */ 487 /* should define FT_DEBUG_MEMORY here. */ 488 /* */ 489 /* Note that the memory debugger is only activated at runtime when */ 490 /* when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */ 491 /* */ 492 /* Do not #undef this macro here since the build system might define */ 493 /* it for certain configurations only. */ 494 /* */ 495 /* #define FT_DEBUG_MEMORY */ 496 497 498 /*************************************************************************/ 499 /* */ 500 /* Module errors */ 501 /* */ 502 /* If this macro is set (which is _not_ the default), the higher byte */ 503 /* of an error code gives the module in which the error has occurred, */ 504 /* while the lower byte is the real error code. */ 505 /* */ 506 /* Setting this macro makes sense for debugging purposes only, since */ 507 /* it would break source compatibility of certain programs that use */ 508 /* FreeType 2. */ 509 /* */ 510 /* More details can be found in the files ftmoderr.h and fterrors.h. */ 511 /* */ 512 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS 513 514 515 /*************************************************************************/ 516 /* */ 517 /* Position Independent Code */ 518 /* */ 519 /* If this macro is set (which is _not_ the default), FreeType2 will */ 520 /* avoid creating constants that require address fixups. Instead the */ 521 /* constants will be moved into a struct and additional intialization */ 522 /* code will be used. */ 523 /* */ 524 /* Setting this macro is needed for systems that prohibit address */ 525 /* fixups, such as BREW. [Note that standard compilers like gcc or */ 526 /* clang handle PIC generation automatically; you don't have to set */ 527 /* FT_CONFIG_OPTION_PIC, which is only necessary for very special */ 528 /* compilers.] */ 529 /* */ 530 /* Note that FT_CONFIG_OPTION_PIC support is not available for all */ 531 /* modules (see `modules.cfg' for a complete list). For building with */ 532 /* FT_CONFIG_OPTION_PIC support, do the following. */ 533 /* */ 534 /* 0. Clone the repository. */ 535 /* 1. Define FT_CONFIG_OPTION_PIC. */ 536 /* 2. Remove all subdirectories in `src' that don't have */ 537 /* FT_CONFIG_OPTION_PIC support. */ 538 /* 3. Comment out the corresponding modules in `modules.cfg'. */ 539 /* 4. Compile. */ 540 /* */ 541 /* #define FT_CONFIG_OPTION_PIC */ 542 543 544 /*************************************************************************/ 545 /*************************************************************************/ 546 /**** ****/ 547 /**** S F N T D R I V E R C O N F I G U R A T I O N ****/ 548 /**** ****/ 549 /*************************************************************************/ 550 /*************************************************************************/ 551 552 553 /*************************************************************************/ 554 /* */ 555 /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support */ 556 /* embedded bitmaps in all formats using the SFNT module (namely */ 557 /* TrueType & OpenType). */ 558 /* */ 559 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS 560 561 562 /*************************************************************************/ 563 /* */ 564 /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to */ 565 /* load and enumerate the glyph Postscript names in a TrueType or */ 566 /* OpenType file. */ 567 /* */ 568 /* Note that when you do not compile the `PSNames' module by undefining */ 569 /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will */ 570 /* contain additional code used to read the PS Names table from a font. */ 571 /* */ 572 /* (By default, the module uses `PSNames' to extract glyph names.) */ 573 /* */ 574 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES 575 576 577 /*************************************************************************/ 578 /* */ 579 /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to */ 580 /* access the internal name table in a SFNT-based format like TrueType */ 581 /* or OpenType. The name table contains various strings used to */ 582 /* describe the font, like family name, copyright, version, etc. It */ 583 /* does not contain any glyph name though. */ 584 /* */ 585 /* Accessing SFNT names is done through the functions declared in */ 586 /* `ftsnames.h'. */ 587 /* */ 588 #define TT_CONFIG_OPTION_SFNT_NAMES 589 590 591 /*************************************************************************/ 592 /* */ 593 /* TrueType CMap support */ 594 /* */ 595 /* Here you can fine-tune which TrueType CMap table format shall be */ 596 /* supported. */ 597 #define TT_CONFIG_CMAP_FORMAT_0 598 #define TT_CONFIG_CMAP_FORMAT_2 599 #define TT_CONFIG_CMAP_FORMAT_4 600 #define TT_CONFIG_CMAP_FORMAT_6 601 #define TT_CONFIG_CMAP_FORMAT_8 602 #define TT_CONFIG_CMAP_FORMAT_10 603 #define TT_CONFIG_CMAP_FORMAT_12 604 #define TT_CONFIG_CMAP_FORMAT_13 605 #define TT_CONFIG_CMAP_FORMAT_14 606 607 608 /*************************************************************************/ 609 /*************************************************************************/ 610 /**** ****/ 611 /**** 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 ****/ 612 /**** ****/ 613 /*************************************************************************/ 614 /*************************************************************************/ 615 616 /*************************************************************************/ 617 /* */ 618 /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */ 619 /* a bytecode interpreter in the TrueType driver. */ 620 /* */ 621 /* By undefining this, you will only compile the code necessary to load */ 622 /* TrueType glyphs without hinting. */ 623 /* */ 624 /* Do not #undef this macro here, since the build system might */ 625 /* define it for certain configurations only. */ 626 /* */ 627 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER 628 629 630 /*************************************************************************/ 631 /* */ 632 /* Define TT_CONFIG_OPTION_SUBPIXEL_HINTING if you want to compile */ 633 /* subpixel hinting support into the TrueType driver. This modifies the */ 634 /* TrueType hinting mechanism when anything but FT_RENDER_MODE_MONO is */ 635 /* requested. */ 636 /* */ 637 /* In particular, it modifies the bytecode interpreter to interpret (or */ 638 /* not) instructions in a certain way so that all TrueType fonts look */ 639 /* like they do in a Windows ClearType (DirectWrite) environment. See */ 640 /* [1] for a technical overview on what this means. See `ttinterp.h' */ 641 /* for more details on the LEAN option. */ 642 /* */ 643 /* There are three options. */ 644 /* */ 645 /* 1. This option is associated with the `Infinality' moniker. */ 646 /* Contributed by an individual nicknamed Infinality with the goal of */ 647 /* making TrueType fonts render better than on Windows. A high */ 648 /* amount of configurability and flexibility, down to rules for */ 649 /* single glyphs in fonts, but also very slow. Its experimental and */ 650 /* slow nature and the original developer losing interest meant that */ 651 /* this option was never enabled in default builds. */ 652 /* */ 653 /* 2. The new default mode for the TrueType driver. The Infinality code */ 654 /* base was stripped to the bare minimum and all configurability */ 655 /* removed in the name of speed and simplicity. The configurability */ 656 /* was mainly aimed at legacy fonts like Arial, Times New Roman, or */ 657 /* Courier. Legacy fonts are fonts that modify vertical stems to */ 658 /* achieve clean black-and-white bitmaps. The new mode focuses on */ 659 /* applying a minimal set of rules to all fonts indiscriminately so */ 660 /* that modern and web fonts render well while legacy fonts render */ 661 /* okay. */ 662 /* */ 663 /* 3. Compile both. */ 664 /* */ 665 /* By undefining these, you get rendering behavior like on Windows */ 666 /* without ClearType, i.e., Windows XP without ClearType enabled and */ 667 /* Win9x (interpreter version v35). Or not, depending on how much */ 668 /* hinting blood and testing tears the font designer put into a given */ 669 /* font. If you define one or both subpixel hinting options, you can */ 670 /* switch between between v35 and the ones you define. */ 671 /* */ 672 /* This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be */ 673 /* defined. */ 674 /* */ 675 /* [1] http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx */ 676 /* */ 677 /* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING 1 */ 678 /* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING 2 */ 679 /* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING ( 1 | 2 ) */ 680 681 682 /*************************************************************************/ 683 /* */ 684 /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the */ 685 /* TrueType glyph loader to use Apple's definition of how to handle */ 686 /* component offsets in composite glyphs. */ 687 /* */ 688 /* Apple and MS disagree on the default behavior of component offsets */ 689 /* in composites. Apple says that they should be scaled by the scaling */ 690 /* factors in the transformation matrix (roughly, it's more complex) */ 691 /* while MS says they should not. OpenType defines two bits in the */ 692 /* composite flags array which can be used to disambiguate, but old */ 693 /* fonts will not have them. */ 694 /* */ 695 /* http://www.microsoft.com/typography/otspec/glyf.htm */ 696 /* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6glyf.html */ 697 /* */ 698 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED 699 700 701 /*************************************************************************/ 702 /* */ 703 /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */ 704 /* support for Apple's distortable font technology (fvar, gvar, cvar, */ 705 /* and avar tables). This has many similarities to Type 1 Multiple */ 706 /* Masters support. */ 707 /* */ 708 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT 709 710 711 /*************************************************************************/ 712 /* */ 713 /* Define TT_CONFIG_OPTION_BDF if you want to include support for */ 714 /* an embedded `BDF ' table within SFNT-based bitmap formats. */ 715 /* */ 716 #define TT_CONFIG_OPTION_BDF 717 718 719 /*************************************************************************/ 720 /* */ 721 /* Option TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES controls the maximum */ 722 /* number of bytecode instructions executed for a single run of the */ 723 /* bytecode interpreter, needed to prevent infinite loops. You don't */ 724 /* want to change this except for very special situations (e.g., making */ 725 /* a library fuzzer spend less time to handle broken fonts). */ 726 /* */ 727 /* It is not expected that this value is ever modified by a configuring */ 728 /* script; instead, it gets surrounded with #ifndef ... #endif so that */ 729 /* the value can be set as a preprocessor option on the compiler's */ 730 /* command line. */ 731 /* */ 732 #ifndef TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES 733 #define TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES 1000000L 734 #endif 735 736 737 /*************************************************************************/ 738 /*************************************************************************/ 739 /**** ****/ 740 /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/ 741 /**** ****/ 742 /*************************************************************************/ 743 /*************************************************************************/ 744 745 746 /*************************************************************************/ 747 /* */ 748 /* T1_MAX_DICT_DEPTH is the maximum depth of nest dictionaries and */ 749 /* arrays in the Type 1 stream (see t1load.c). A minimum of 4 is */ 750 /* required. */ 751 /* */ 752 #define T1_MAX_DICT_DEPTH 5 753 754 755 /*************************************************************************/ 756 /* */ 757 /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */ 758 /* calls during glyph loading. */ 759 /* */ 760 #define T1_MAX_SUBRS_CALLS 16 761 762 763 /*************************************************************************/ 764 /* */ 765 /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */ 766 /* minimum of 16 is required. */ 767 /* */ 768 /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */ 769 /* */ 770 #define T1_MAX_CHARSTRINGS_OPERANDS 256 771 772 773 /*************************************************************************/ 774 /* */ 775 /* Define this configuration macro if you want to prevent the */ 776 /* compilation of `t1afm', which is in charge of reading Type 1 AFM */ 777 /* files into an existing face. Note that if set, the T1 driver will be */ 778 /* unable to produce kerning distances. */ 779 /* */ 780 #undef T1_CONFIG_OPTION_NO_AFM 781 782 783 /*************************************************************************/ 784 /* */ 785 /* Define this configuration macro if you want to prevent the */ 786 /* compilation of the Multiple Masters font support in the Type 1 */ 787 /* driver. */ 788 /* */ 789 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT 790 791 792 /*************************************************************************/ 793 /*************************************************************************/ 794 /**** ****/ 795 /**** C F F D R I V E R C O N F I G U R A T I O N ****/ 796 /**** ****/ 797 /*************************************************************************/ 798 /*************************************************************************/ 799 800 801 /*************************************************************************/ 802 /* */ 803 /* Using CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4} it is */ 804 /* possible to set up the default values of the four control points that */ 805 /* define the stem darkening behaviour of the (new) CFF engine. For */ 806 /* more details please read the documentation of the */ 807 /* `darkening-parameters' property of the cff driver module (file */ 808 /* `ftcffdrv.h'), which allows the control at run-time. */ 809 /* */ 810 /* Do *not* undefine these macros! */ 811 /* */ 812 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 500 813 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 400 814 815 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 1000 816 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 275 817 818 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 1667 819 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 275 820 821 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 2333 822 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 0 823 824 825 /*************************************************************************/ 826 /* */ 827 /* CFF_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe CFF */ 828 /* engine gets compiled into FreeType. If defined, it is possible to */ 829 /* switch between the two engines using the `hinting-engine' property of */ 830 /* the cff driver module. */ 831 /* */ 832 /* #define CFF_CONFIG_OPTION_OLD_ENGINE */ 833 834 835 /*************************************************************************/ 836 /*************************************************************************/ 837 /**** ****/ 838 /**** 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 ****/ 839 /**** ****/ 840 /*************************************************************************/ 841 /*************************************************************************/ 842 843 844 /*************************************************************************/ 845 /* */ 846 /* Compile autofit module with CJK (Chinese, Japanese, Korean) script */ 847 /* support. */ 848 /* */ 849 #define AF_CONFIG_OPTION_CJK 850 851 /*************************************************************************/ 852 /* */ 853 /* Compile autofit module with Indic script support. */ 854 /* */ 855 #define AF_CONFIG_OPTION_INDIC 856 857 /*************************************************************************/ 858 /* */ 859 /* Compile autofit module with warp hinting. The idea of the warping */ 860 /* code is to slightly scale and shift a glyph within a single dimension */ 861 /* so that as much of its segments are aligned (more or less) on the */ 862 /* grid. To find out the optimal scaling and shifting value, various */ 863 /* parameter combinations are tried and scored. */ 864 /* */ 865 /* This experimental option is active only if the rendering mode is */ 866 /* FT_RENDER_MODE_LIGHT; you can switch warping on and off with the */ 867 /* `warping' property of the auto-hinter (see file `ftautoh.h' for more */ 868 /* information; by default it is switched off). */ 869 /* */ 870 #define AF_CONFIG_OPTION_USE_WARPER 871 872 /* */ 873 874 875 /* 876 * This macro is obsolete. Support has been removed in FreeType 877 * version 2.5. 878 */ 879 /* #define FT_CONFIG_OPTION_OLD_INTERNALS */ 880 881 882 /* 883 * This macro is defined if native TrueType hinting is requested by the 884 * definitions above. 885 */ 886 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 887 #define TT_USE_BYTECODE_INTERPRETER 888 889 #if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 1 890 #define TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY 891 #endif 892 893 #if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 2 894 #define TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL 895 #endif 896 #endif 897 898 899 /* 900 * Check CFF darkening parameters. The checks are the same as in function 901 * `cff_property_set' in file `cffdrivr.c'. 902 */ 903 #if CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 < 0 || \ 904 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 < 0 || \ 905 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 < 0 || \ 906 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 < 0 || \ 907 \ 908 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 < 0 || \ 909 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 < 0 || \ 910 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 < 0 || \ 911 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 < 0 || \ 912 \ 913 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 > \ 914 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 || \ 915 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 > \ 916 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 || \ 917 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 > \ 918 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 || \ 919 \ 920 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 > 500 || \ 921 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 > 500 || \ 922 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 > 500 || \ 923 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 > 500 924 #error "Invalid CFF darkening parameters!" 925 #endif 926 927 FT_END_HEADER 928 929 930 #endif /* FTOPTION_H_ */ 931 932 933 /* END */ 934
