1 /**************************************************************************** 2 * 3 * ftoption.h 4 * 5 * User-selectable configuration macros (specification only). 6 * 7 * Copyright (C) 1996-2019 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 a 33 * standard build of the FreeType library. There are three ways to use 34 * 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 library 38 * 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` is 42 * the name of a directory that is included _before_ the FreeType include 43 * path during compilation. 44 * 45 * The default FreeType Makefiles and Jamfiles use the build directory 46 * `builds/<system>` by default, but you can easily change that for your 47 * own projects. 48 * 49 * - Copy the file <ft2build.h> to `$BUILD/ft2build.h` and modify it 50 * slightly to pre-define the macro `FT_CONFIG_OPTIONS_H` used to locate 51 * this file during the build. For example, 52 * 53 * ``` 54 * #define FT_CONFIG_OPTIONS_H <myftoptions.h> 55 * #include <freetype/config/ftheader.h> 56 * ``` 57 * 58 * will use `$BUILD/myftoptions.h` instead of this file for macro 59 * definitions. 60 * 61 * Note also that you can similarly pre-define the macro 62 * `FT_CONFIG_MODULES_H` used to locate the file listing of the modules 63 * that are statically linked to the library at compile time. By 64 * default, this file is `<freetype/config/ftmodule.h>`. 65 * 66 * We highly recommend using the third method whenever possible. 67 * 68 */ 69 70 71 /*************************************************************************/ 72 /*************************************************************************/ 73 /**** ****/ 74 /**** 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 ****/ 75 /**** ****/ 76 /*************************************************************************/ 77 /*************************************************************************/ 78 79 80 /*#************************************************************************ 81 * 82 * If you enable this configuration option, FreeType recognizes an 83 * environment variable called `FREETYPE_PROPERTIES`, which can be used to 84 * control the various font drivers and modules. The controllable 85 * properties are listed in the section @properties. 86 * 87 * You have to undefine this configuration option on platforms that lack 88 * the concept of environment variables (and thus don't have the `getenv` 89 * function), for example Windows CE. 90 * 91 * `FREETYPE_PROPERTIES` has the following syntax form (broken here into 92 * multiple lines for better readability). 93 * 94 * ``` 95 * <optional whitespace> 96 * <module-name1> ':' 97 * <property-name1> '=' <property-value1> 98 * <whitespace> 99 * <module-name2> ':' 100 * <property-name2> '=' <property-value2> 101 * ... 102 * ``` 103 * 104 * Example: 105 * 106 * ``` 107 * FREETYPE_PROPERTIES=truetype:interpreter-version=35 \ 108 * cff:no-stem-darkening=1 \ 109 * autofitter:warping=1 110 * ``` 111 * 112 */ 113 #define FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES 114 115 116 /************************************************************************** 117 * 118 * Uncomment the line below if you want to activate LCD rendering 119 * technology similar to ClearType in this build of the library. This 120 * technology triples the resolution in the direction color subpixels. To 121 * mitigate color fringes inherent to this technology, you also need to 122 * explicitly set up LCD filtering. 123 * 124 * Note that this feature is covered by several Microsoft patents and 125 * should not be activated in any default build of the library. When this 126 * macro is not defined, FreeType offers alternative LCD rendering 127 * technology that produces excellent output without LCD filtering. 128 */ 129 /* #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING */ 130 131 132 /************************************************************************** 133 * 134 * Many compilers provide a non-ANSI 64-bit data type that can be used by 135 * FreeType to speed up some computations. However, this will create some 136 * problems when compiling the library in strict ANSI mode. 137 * 138 * For this reason, the use of 64-bit integers is normally disabled when 139 * the `__STDC__` macro is defined. You can however disable this by 140 * defining the macro `FT_CONFIG_OPTION_FORCE_INT64` here. 141 * 142 * For most compilers, this will only create compilation warnings when 143 * building the library. 144 * 145 * ObNote: The compiler-specific 64-bit integers are detected in the 146 * file `ftconfig.h` either statically or through the `configure` 147 * script on supported platforms. 148 */ 149 #undef FT_CONFIG_OPTION_FORCE_INT64 150 151 152 /************************************************************************** 153 * 154 * If this macro is defined, do not try to use an assembler version of 155 * performance-critical functions (e.g., @FT_MulFix). You should only do 156 * that to verify that the assembler function works properly, or to execute 157 * benchmark tests of the various implementations. 158 */ 159 /* #define FT_CONFIG_OPTION_NO_ASSEMBLER */ 160 161 162 /************************************************************************** 163 * 164 * If this macro is defined, try to use an inlined assembler version of the 165 * @FT_MulFix function, which is a 'hotspot' when loading and hinting 166 * glyphs, and which should be executed as fast as possible. 167 * 168 * Note that if your compiler or CPU is not supported, this will default to 169 * the standard and portable implementation found in `ftcalc.c`. 170 */ 171 #define FT_CONFIG_OPTION_INLINE_MULFIX 172 173 174 /************************************************************************** 175 * 176 * LZW-compressed file support. 177 * 178 * FreeType now handles font files that have been compressed with the 179 * `compress` program. This is mostly used to parse many of the PCF 180 * files that come with various X11 distributions. The implementation 181 * uses NetBSD's `zopen` to partially uncompress the file on the fly (see 182 * `src/lzw/ftgzip.c`). 183 * 184 * Define this macro if you want to enable this 'feature'. 185 */ 186 #define FT_CONFIG_OPTION_USE_LZW 187 188 189 /************************************************************************** 190 * 191 * Gzip-compressed file support. 192 * 193 * FreeType now handles font files that have been compressed with the 194 * `gzip` program. This is mostly used to parse many of the PCF files 195 * that come with XFree86. The implementation uses 'zlib' to partially 196 * uncompress the file on the fly (see `src/gzip/ftgzip.c`). 197 * 198 * Define this macro if you want to enable this 'feature'. See also the 199 * macro `FT_CONFIG_OPTION_SYSTEM_ZLIB` below. 200 */ 201 #define FT_CONFIG_OPTION_USE_ZLIB 202 203 204 /************************************************************************** 205 * 206 * ZLib library selection 207 * 208 * This macro is only used when `FT_CONFIG_OPTION_USE_ZLIB` is defined. 209 * It allows FreeType's 'ftgzip' component to link to the system's 210 * installation of the ZLib library. This is useful on systems like 211 * Unix or VMS where it generally is already available. 212 * 213 * If you let it undefined, the component will use its own copy of the 214 * zlib sources instead. These have been modified to be included 215 * directly within the component and **not** export external function 216 * names. This allows you to link any program with FreeType _and_ ZLib 217 * without linking conflicts. 218 * 219 * Do not `#undef` this macro here since the build system might define 220 * it for certain configurations only. 221 * 222 * If you use a build system like cmake or the `configure` script, 223 * options set by those programs have precedence, overwriting the value 224 * here with the configured one. 225 */ 226 /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */ 227 228 229 /************************************************************************** 230 * 231 * Bzip2-compressed file support. 232 * 233 * FreeType now handles font files that have been compressed with the 234 * `bzip2` program. This is mostly used to parse many of the PCF files 235 * that come with XFree86. The implementation uses `libbz2` to partially 236 * uncompress the file on the fly (see `src/bzip2/ftbzip2.c`). Contrary 237 * to gzip, bzip2 currently is not included and need to use the system 238 * available bzip2 implementation. 239 * 240 * Define this macro if you want to enable this 'feature'. 241 * 242 * If you use a build system like cmake or the `configure` script, 243 * options set by those programs have precedence, overwriting the value 244 * here with the configured one. 245 */ 246 /* #define FT_CONFIG_OPTION_USE_BZIP2 */ 247 248 249 /************************************************************************** 250 * 251 * Define to disable the use of file stream functions and types, `FILE`, 252 * `fopen`, etc. Enables the use of smaller system libraries on embedded 253 * systems that have multiple system libraries, some with or without file 254 * stream support, in the cases where file stream support is not necessary 255 * such as memory loading of font files. 256 */ 257 /* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */ 258 259 260 /************************************************************************** 261 * 262 * PNG bitmap support. 263 * 264 * FreeType now handles loading color bitmap glyphs in the PNG format. 265 * This requires help from the external libpng library. Uncompressed 266 * color bitmaps do not need any external libraries and will be supported 267 * regardless of this configuration. 268 * 269 * Define this macro if you want to enable this 'feature'. 270 * 271 * If you use a build system like cmake or the `configure` script, 272 * options set by those programs have precedence, overwriting the value 273 * here with the configured one. 274 */ 275 /* #define FT_CONFIG_OPTION_USE_PNG */ 276 277 278 /************************************************************************** 279 * 280 * HarfBuzz support. 281 * 282 * FreeType uses the HarfBuzz library to improve auto-hinting of OpenType 283 * fonts. If available, many glyphs not directly addressable by a font's 284 * character map will be hinted also. 285 * 286 * Define this macro if you want to enable this 'feature'. 287 * 288 * If you use a build system like cmake or the `configure` script, 289 * options set by those programs have precedence, overwriting the value 290 * here with the configured one. 291 */ 292 /* #define FT_CONFIG_OPTION_USE_HARFBUZZ */ 293 294 295 /************************************************************************** 296 * 297 * Glyph Postscript Names handling 298 * 299 * By default, FreeType 2 is compiled with the 'psnames' module. This 300 * module is in charge of converting a glyph name string into a Unicode 301 * value, or return a Macintosh standard glyph name for the use with the 302 * TrueType 'post' table. 303 * 304 * Undefine this macro if you do not want 'psnames' compiled in your 305 * build of FreeType. This has the following effects: 306 * 307 * - The TrueType driver will provide its own set of glyph names, if you 308 * build it to support postscript names in the TrueType 'post' table, 309 * but will not synthesize a missing Unicode charmap. 310 * 311 * - The Type~1 driver will not be able to synthesize a Unicode charmap 312 * out of the glyphs found in the fonts. 313 * 314 * You would normally undefine this configuration macro when building a 315 * version of FreeType that doesn't contain a Type~1 or CFF driver. 316 */ 317 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES 318 319 320 /************************************************************************** 321 * 322 * Postscript Names to Unicode Values support 323 * 324 * By default, FreeType~2 is built with the 'psnames' module compiled in. 325 * Among other things, the module is used to convert a glyph name into a 326 * Unicode value. This is especially useful in order to synthesize on 327 * the fly a Unicode charmap from the CFF/Type~1 driver through a big 328 * table named the 'Adobe Glyph List' (AGL). 329 * 330 * Undefine this macro if you do not want the Adobe Glyph List compiled 331 * in your 'psnames' module. The Type~1 driver will not be able to 332 * synthesize a Unicode charmap out of the glyphs found in the fonts. 333 */ 334 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST 335 336 337 /************************************************************************** 338 * 339 * Support for Mac fonts 340 * 341 * Define this macro if you want support for outline fonts in Mac format 342 * (mac dfont, mac resource, macbinary containing a mac resource) on 343 * non-Mac platforms. 344 * 345 * Note that the 'FOND' resource isn't checked. 346 */ 347 #define FT_CONFIG_OPTION_MAC_FONTS 348 349 350 /************************************************************************** 351 * 352 * Guessing methods to access embedded resource forks 353 * 354 * Enable extra Mac fonts support on non-Mac platforms (e.g., GNU/Linux). 355 * 356 * Resource forks which include fonts data are stored sometimes in 357 * locations which users or developers don't expected. In some cases, 358 * resource forks start with some offset from the head of a file. In 359 * other cases, the actual resource fork is stored in file different from 360 * what the user specifies. If this option is activated, FreeType tries 361 * to guess whether such offsets or different file names must be used. 362 * 363 * Note that normal, direct access of resource forks is controlled via 364 * the `FT_CONFIG_OPTION_MAC_FONTS` option. 365 */ 366 #ifdef FT_CONFIG_OPTION_MAC_FONTS 367 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK 368 #endif 369 370 371 /************************************************************************** 372 * 373 * Allow the use of `FT_Incremental_Interface` to load typefaces that 374 * contain no glyph data, but supply it via a callback function. This is 375 * required by clients supporting document formats which supply font data 376 * incrementally as the document is parsed, such as the Ghostscript 377 * interpreter for the PostScript language. 378 */ 379 #define FT_CONFIG_OPTION_INCREMENTAL 380 381 382 /************************************************************************** 383 * 384 * The size in bytes of the render pool used by the scan-line converter to 385 * do all of its work. 386 */ 387 #define FT_RENDER_POOL_SIZE 16384L 388 389 390 /************************************************************************** 391 * 392 * FT_MAX_MODULES 393 * 394 * The maximum number of modules that can be registered in a single 395 * FreeType library object. 32~is the default. 396 */ 397 #define FT_MAX_MODULES 32 398 399 400 /************************************************************************** 401 * 402 * Debug level 403 * 404 * FreeType can be compiled in debug or trace mode. In debug mode, 405 * errors are reported through the 'ftdebug' component. In trace mode, 406 * additional messages are sent to the standard output during execution. 407 * 408 * Define `FT_DEBUG_LEVEL_ERROR` to build the library in debug mode. 409 * Define `FT_DEBUG_LEVEL_TRACE` to build it in trace mode. 410 * 411 * Don't define any of these macros to compile in 'release' mode! 412 * 413 * Do not `#undef` these macros here since the build system might define 414 * them for certain configurations only. 415 */ 416 /* #define FT_DEBUG_LEVEL_ERROR */ 417 /* #define FT_DEBUG_LEVEL_TRACE */ 418 419 420 /************************************************************************** 421 * 422 * Autofitter debugging 423 * 424 * If `FT_DEBUG_AUTOFIT` is defined, FreeType provides some means to 425 * control the autofitter behaviour for debugging purposes with global 426 * boolean variables (consequently, you should **never** enable this 427 * while compiling in 'release' mode): 428 * 429 * ``` 430 * _af_debug_disable_horz_hints 431 * _af_debug_disable_vert_hints 432 * _af_debug_disable_blue_hints 433 * ``` 434 * 435 * Additionally, the following functions provide dumps of various 436 * internal autofit structures to stdout (using `printf`): 437 * 438 * ``` 439 * af_glyph_hints_dump_points 440 * af_glyph_hints_dump_segments 441 * af_glyph_hints_dump_edges 442 * af_glyph_hints_get_num_segments 443 * af_glyph_hints_get_segment_offset 444 * ``` 445 * 446 * As an argument, they use another global variable: 447 * 448 * ``` 449 * _af_debug_hints 450 * ``` 451 * 452 * Please have a look at the `ftgrid` demo program to see how those 453 * variables and macros should be used. 454 * 455 * Do not `#undef` these macros here since the build system might define 456 * them for certain configurations only. 457 */ 458 /* #define FT_DEBUG_AUTOFIT */ 459 460 461 /************************************************************************** 462 * 463 * Memory Debugging 464 * 465 * FreeType now comes with an integrated memory debugger that is capable 466 * of detecting simple errors like memory leaks or double deletes. To 467 * compile it within your build of the library, you should define 468 * `FT_DEBUG_MEMORY` here. 469 * 470 * Note that the memory debugger is only activated at runtime when when 471 * the _environment_ variable `FT2_DEBUG_MEMORY` is defined also! 472 * 473 * Do not `#undef` this macro here since the build system might define it 474 * for certain configurations only. 475 */ 476 /* #define FT_DEBUG_MEMORY */ 477 478 479 /************************************************************************** 480 * 481 * Module errors 482 * 483 * If this macro is set (which is _not_ the default), the higher byte of 484 * an error code gives the module in which the error has occurred, while 485 * the lower byte is the real error code. 486 * 487 * Setting this macro makes sense for debugging purposes only, since it 488 * would break source compatibility of certain programs that use 489 * FreeType~2. 490 * 491 * More details can be found in the files `ftmoderr.h` and `fterrors.h`. 492 */ 493 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS 494 495 496 /************************************************************************** 497 * 498 * Error Strings 499 * 500 * If this macro is set, `FT_Error_String` will return meaningful 501 * descriptions. This is not enabled by default to reduce the overall 502 * size of FreeType. 503 * 504 * More details can be found in the file `fterrors.h`. 505 */ 506 /* #define FT_CONFIG_OPTION_ERROR_STRINGS */ 507 508 509 /*************************************************************************/ 510 /*************************************************************************/ 511 /**** ****/ 512 /**** S F N T D R I V E R C O N F I G U R A T I O N ****/ 513 /**** ****/ 514 /*************************************************************************/ 515 /*************************************************************************/ 516 517 518 /************************************************************************** 519 * 520 * Define `TT_CONFIG_OPTION_EMBEDDED_BITMAPS` if you want to support 521 * embedded bitmaps in all formats using the 'sfnt' module (namely 522 * TrueType~& OpenType). 523 */ 524 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS 525 526 527 /************************************************************************** 528 * 529 * Define `TT_CONFIG_OPTION_COLOR_LAYERS` if you want to support coloured 530 * outlines (from the 'COLR'/'CPAL' tables) in all formats using the 'sfnt' 531 * module (namely TrueType~& OpenType). 532 */ 533 #define TT_CONFIG_OPTION_COLOR_LAYERS 534 535 536 /************************************************************************** 537 * 538 * Define `TT_CONFIG_OPTION_POSTSCRIPT_NAMES` if you want to be able to 539 * load and enumerate the glyph Postscript names in a TrueType or OpenType 540 * file. 541 * 542 * Note that when you do not compile the 'psnames' module by undefining the 543 * above `FT_CONFIG_OPTION_POSTSCRIPT_NAMES`, the 'sfnt' module will 544 * contain additional code used to read the PS Names table from a font. 545 * 546 * (By default, the module uses 'psnames' to extract glyph names.) 547 */ 548 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES 549 550 551 /************************************************************************** 552 * 553 * Define `TT_CONFIG_OPTION_SFNT_NAMES` if your applications need to access 554 * the internal name table in a SFNT-based format like TrueType or 555 * OpenType. The name table contains various strings used to describe the 556 * font, like family name, copyright, version, etc. It does not contain 557 * any glyph name though. 558 * 559 * Accessing SFNT names is done through the functions declared in 560 * `ftsnames.h`. 561 */ 562 #define TT_CONFIG_OPTION_SFNT_NAMES 563 564 565 /************************************************************************** 566 * 567 * TrueType CMap support 568 * 569 * Here you can fine-tune which TrueType CMap table format shall be 570 * supported. 571 */ 572 #define TT_CONFIG_CMAP_FORMAT_0 573 #define TT_CONFIG_CMAP_FORMAT_2 574 #define TT_CONFIG_CMAP_FORMAT_4 575 #define TT_CONFIG_CMAP_FORMAT_6 576 #define TT_CONFIG_CMAP_FORMAT_8 577 #define TT_CONFIG_CMAP_FORMAT_10 578 #define TT_CONFIG_CMAP_FORMAT_12 579 #define TT_CONFIG_CMAP_FORMAT_13 580 #define TT_CONFIG_CMAP_FORMAT_14 581 582 583 /*************************************************************************/ 584 /*************************************************************************/ 585 /**** ****/ 586 /**** 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 ****/ 587 /**** ****/ 588 /*************************************************************************/ 589 /*************************************************************************/ 590 591 /************************************************************************** 592 * 593 * Define `TT_CONFIG_OPTION_BYTECODE_INTERPRETER` if you want to compile a 594 * bytecode interpreter in the TrueType driver. 595 * 596 * By undefining this, you will only compile the code necessary to load 597 * TrueType glyphs without hinting. 598 * 599 * Do not `#undef` this macro here, since the build system might define it 600 * for certain configurations only. 601 */ 602 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER 603 604 605 /************************************************************************** 606 * 607 * Define `TT_CONFIG_OPTION_SUBPIXEL_HINTING` if you want to compile 608 * subpixel hinting support into the TrueType driver. This modifies the 609 * TrueType hinting mechanism when anything but `FT_RENDER_MODE_MONO` is 610 * requested. 611 * 612 * In particular, it modifies the bytecode interpreter to interpret (or 613 * not) instructions in a certain way so that all TrueType fonts look like 614 * they do in a Windows ClearType (DirectWrite) environment. See [1] for a 615 * technical overview on what this means. See `ttinterp.h` for more 616 * details on the LEAN option. 617 * 618 * There are three possible values. 619 * 620 * Value 1: 621 * This value is associated with the 'Infinality' moniker, contributed by 622 * an individual nicknamed Infinality with the goal of making TrueType 623 * fonts render better than on Windows. A high amount of configurability 624 * and flexibility, down to rules for single glyphs in fonts, but also 625 * very slow. Its experimental and slow nature and the original 626 * developer losing interest meant that this option was never enabled in 627 * default builds. 628 * 629 * The corresponding interpreter version is v38. 630 * 631 * Value 2: 632 * The new default mode for the TrueType driver. The Infinality code 633 * base was stripped to the bare minimum and all configurability removed 634 * in the name of speed and simplicity. The configurability was mainly 635 * aimed at legacy fonts like 'Arial', 'Times New Roman', or 'Courier'. 636 * Legacy fonts are fonts that modify vertical stems to achieve clean 637 * black-and-white bitmaps. The new mode focuses on applying a minimal 638 * set of rules to all fonts indiscriminately so that modern and web 639 * fonts render well while legacy fonts render okay. 640 * 641 * The corresponding interpreter version is v40. 642 * 643 * Value 3: 644 * Compile both, making both v38 and v40 available (the latter is the 645 * default). 646 * 647 * By undefining these, you get rendering behavior like on Windows without 648 * ClearType, i.e., Windows XP without ClearType enabled and Win9x 649 * (interpreter version v35). Or not, depending on how much hinting blood 650 * and testing tears the font designer put into a given font. If you 651 * define one or both subpixel hinting options, you can switch between 652 * between v35 and the ones you define (using `FT_Property_Set`). 653 * 654 * This option requires `TT_CONFIG_OPTION_BYTECODE_INTERPRETER` to be 655 * defined. 656 * 657 * [1] 658 * https://www.microsoft.com/typography/cleartype/truetypecleartype.aspx 659 */ 660 /* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING 1 */ 661 #define TT_CONFIG_OPTION_SUBPIXEL_HINTING 2 662 /* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING ( 1 | 2 ) */ 663 664 665 /************************************************************************** 666 * 667 * Define `TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED` to compile the 668 * TrueType glyph loader to use Apple's definition of how to handle 669 * component offsets in composite glyphs. 670 * 671 * Apple and MS disagree on the default behavior of component offsets in 672 * composites. Apple says that they should be scaled by the scaling 673 * factors in the transformation matrix (roughly, it's more complex) while 674 * MS says they should not. OpenType defines two bits in the composite 675 * flags array which can be used to disambiguate, but old fonts will not 676 * have them. 677 * 678 * https://www.microsoft.com/typography/otspec/glyf.htm 679 * https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6glyf.html 680 */ 681 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED 682 683 684 /************************************************************************** 685 * 686 * Define `TT_CONFIG_OPTION_GX_VAR_SUPPORT` if you want to include support 687 * for Apple's distortable font technology ('fvar', 'gvar', 'cvar', and 688 * 'avar' tables). Tagged 'Font Variations', this is now part of OpenType 689 * also. This has many similarities to Type~1 Multiple Masters support. 690 */ 691 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT 692 693 694 /************************************************************************** 695 * 696 * Define `TT_CONFIG_OPTION_BDF` if you want to include support for an 697 * embedded 'BDF~' table within SFNT-based bitmap formats. 698 */ 699 #define TT_CONFIG_OPTION_BDF 700 701 702 /************************************************************************** 703 * 704 * Option `TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES` controls the maximum 705 * number of bytecode instructions executed for a single run of the 706 * bytecode interpreter, needed to prevent infinite loops. You don't want 707 * to change this except for very special situations (e.g., making a 708 * library fuzzer spend less time to handle broken fonts). 709 * 710 * It is not expected that this value is ever modified by a configuring 711 * script; instead, it gets surrounded with `#ifndef ... #endif` so that 712 * the value can be set as a preprocessor option on the compiler's command 713 * line. 714 */ 715 #ifndef TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES 716 #define TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES 1000000L 717 #endif 718 719 720 /*************************************************************************/ 721 /*************************************************************************/ 722 /**** ****/ 723 /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/ 724 /**** ****/ 725 /*************************************************************************/ 726 /*************************************************************************/ 727 728 729 /************************************************************************** 730 * 731 * `T1_MAX_DICT_DEPTH` is the maximum depth of nest dictionaries and arrays 732 * in the Type~1 stream (see `t1load.c`). A minimum of~4 is required. 733 */ 734 #define T1_MAX_DICT_DEPTH 5 735 736 737 /************************************************************************** 738 * 739 * `T1_MAX_SUBRS_CALLS` details the maximum number of nested sub-routine 740 * calls during glyph loading. 741 */ 742 #define T1_MAX_SUBRS_CALLS 16 743 744 745 /************************************************************************** 746 * 747 * `T1_MAX_CHARSTRING_OPERANDS` is the charstring stack's capacity. A 748 * minimum of~16 is required. 749 * 750 * The Chinese font 'MingTiEG-Medium' (covering the CNS 11643 character 751 * set) needs 256. 752 */ 753 #define T1_MAX_CHARSTRINGS_OPERANDS 256 754 755 756 /************************************************************************** 757 * 758 * Define this configuration macro if you want to prevent the compilation 759 * of the 't1afm' module, which is in charge of reading Type~1 AFM files 760 * into an existing face. Note that if set, the Type~1 driver will be 761 * unable to produce kerning distances. 762 */ 763 #undef T1_CONFIG_OPTION_NO_AFM 764 765 766 /************************************************************************** 767 * 768 * Define this configuration macro if you want to prevent the compilation 769 * of the Multiple Masters font support in the Type~1 driver. 770 */ 771 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT 772 773 774 /************************************************************************** 775 * 776 * `T1_CONFIG_OPTION_OLD_ENGINE` controls whether the pre-Adobe Type~1 777 * engine gets compiled into FreeType. If defined, it is possible to 778 * switch between the two engines using the `hinting-engine` property of 779 * the 'type1' driver module. 780 */ 781 /* #define T1_CONFIG_OPTION_OLD_ENGINE */ 782 783 784 /*************************************************************************/ 785 /*************************************************************************/ 786 /**** ****/ 787 /**** C F F D R I V E R C O N F I G U R A T I O N ****/ 788 /**** ****/ 789 /*************************************************************************/ 790 /*************************************************************************/ 791 792 793 /************************************************************************** 794 * 795 * Using `CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4}` it is 796 * possible to set up the default values of the four control points that 797 * define the stem darkening behaviour of the (new) CFF engine. For more 798 * details please read the documentation of the `darkening-parameters` 799 * property (file `ftdriver.h`), which allows the control at run-time. 800 * 801 * Do **not** undefine these macros! 802 */ 803 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 500 804 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 400 805 806 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 1000 807 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 275 808 809 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 1667 810 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 275 811 812 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 2333 813 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 0 814 815 816 /************************************************************************** 817 * 818 * `CFF_CONFIG_OPTION_OLD_ENGINE` controls whether the pre-Adobe CFF engine 819 * gets compiled into FreeType. If defined, it is possible to switch 820 * between the two engines using the `hinting-engine` property of the 'cff' 821 * driver module. 822 */ 823 /* #define CFF_CONFIG_OPTION_OLD_ENGINE */ 824 825 826 /*************************************************************************/ 827 /*************************************************************************/ 828 /**** ****/ 829 /**** P C F D R I V E R C O N F I G U R A T I O N ****/ 830 /**** ****/ 831 /*************************************************************************/ 832 /*************************************************************************/ 833 834 835 /************************************************************************** 836 * 837 * There are many PCF fonts just called 'Fixed' which look completely 838 * different, and which have nothing to do with each other. When selecting 839 * 'Fixed' in KDE or Gnome one gets results that appear rather random, the 840 * style changes often if one changes the size and one cannot select some 841 * fonts at all. This option makes the 'pcf' module prepend the foundry 842 * name (plus a space) to the family name. 843 * 844 * We also check whether we have 'wide' characters; all put together, we 845 * get family names like 'Sony Fixed' or 'Misc Fixed Wide'. 846 * 847 * If this option is activated, it can be controlled with the 848 * `no-long-family-names` property of the 'pcf' driver module. 849 */ 850 /* #define PCF_CONFIG_OPTION_LONG_FAMILY_NAMES */ 851 852 853 /*************************************************************************/ 854 /*************************************************************************/ 855 /**** ****/ 856 /**** 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 ****/ 857 /**** ****/ 858 /*************************************************************************/ 859 /*************************************************************************/ 860 861 862 /************************************************************************** 863 * 864 * Compile 'autofit' module with CJK (Chinese, Japanese, Korean) script 865 * support. 866 */ 867 #define AF_CONFIG_OPTION_CJK 868 869 870 /************************************************************************** 871 * 872 * Compile 'autofit' module with fallback Indic script support, covering 873 * some scripts that the 'latin' submodule of the 'autofit' module doesn't 874 * (yet) handle. 875 */ 876 #define AF_CONFIG_OPTION_INDIC 877 878 879 /************************************************************************** 880 * 881 * Compile 'autofit' module with warp hinting. The idea of the warping 882 * code is to slightly scale and shift a glyph within a single dimension so 883 * that as much of its segments are aligned (more or less) on the grid. To 884 * find out the optimal scaling and shifting value, various parameter 885 * combinations are tried and scored. 886 * 887 * You can switch warping on and off with the `warping` property of the 888 * auto-hinter (see file `ftdriver.h` for more information; by default it 889 * is switched off). 890 * 891 * This experimental option is not active if the rendering mode is 892 * `FT_RENDER_MODE_LIGHT`. 893 */ 894 #define AF_CONFIG_OPTION_USE_WARPER 895 896 897 /************************************************************************** 898 * 899 * Use TrueType-like size metrics for 'light' auto-hinting. 900 * 901 * It is strongly recommended to avoid this option, which exists only to 902 * help some legacy applications retain its appearance and behaviour with 903 * respect to auto-hinted TrueType fonts. 904 * 905 * The very reason this option exists at all are GNU/Linux distributions 906 * like Fedora that did not un-patch the following change (which was 907 * present in FreeType between versions 2.4.6 and 2.7.1, inclusive). 908 * 909 * ``` 910 * 2011-07-16 Steven Chu <steven.f.chu@gmail.com> 911 * 912 * [truetype] Fix metrics on size request for scalable fonts. 913 * ``` 914 * 915 * This problematic commit is now reverted (more or less). 916 */ 917 /* #define AF_CONFIG_OPTION_TT_SIZE_METRICS */ 918 919 /* */ 920 921 922 /* 923 * This macro is obsolete. Support has been removed in FreeType version 924 * 2.5. 925 */ 926 /* #define FT_CONFIG_OPTION_OLD_INTERNALS */ 927 928 929 /* 930 * The next three macros are defined if native TrueType hinting is 931 * requested by the definitions above. Don't change this. 932 */ 933 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER 934 #define TT_USE_BYTECODE_INTERPRETER 935 936 #ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING 937 #if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 1 938 #define TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY 939 #endif 940 941 #if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 2 942 #define TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL 943 #endif 944 #endif 945 #endif 946 947 948 /* 949 * Check CFF darkening parameters. The checks are the same as in function 950 * `cff_property_set` in file `cffdrivr.c`. 951 */ 952 #if CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 < 0 || \ 953 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 < 0 || \ 954 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 < 0 || \ 955 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 < 0 || \ 956 \ 957 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 < 0 || \ 958 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 < 0 || \ 959 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 < 0 || \ 960 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 < 0 || \ 961 \ 962 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 > \ 963 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 || \ 964 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 > \ 965 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 || \ 966 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 > \ 967 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 || \ 968 \ 969 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 > 500 || \ 970 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 > 500 || \ 971 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 > 500 || \ 972 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 > 500 973 #error "Invalid CFF darkening parameters!" 974 #endif 975 976 FT_END_HEADER 977 978 979 #endif /* FTOPTION_H_ */ 980 981 982 /* END */ 983