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| 1 /***************************************************************************/ |
| 2 /* */ |
| 3 /* ftoption.h */ |
| 4 /* */ |
| 5 /* User-selectable configuration macros (specification only). */ |
| 6 /* */ |
| 7 /* Copyright 1996-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 by */ |
| 8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */ |
| 9 /* */ |
| 10 /* This file is part of the FreeType project, and may only be used, */ |
| 11 /* modified, and distributed under the terms of the FreeType project */ |
| 12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */ |
| 13 /* this file you indicate that you have read the license and */ |
| 14 /* understand and accept it fully. */ |
| 15 /* */ |
| 16 /***************************************************************************/ |
| 17 |
| 18 |
| 19 #ifndef __FTOPTION_H__ |
| 20 #define __FTOPTION_H__ |
| 21 |
| 22 |
| 23 #include <ft2build.h> |
| 24 |
| 25 |
| 26 FT_BEGIN_HEADER |
| 27 |
| 28 /*************************************************************************/ |
| 29 /* */ |
| 30 /* USER-SELECTABLE CONFIGURATION MACROS */ |
| 31 /* */ |
| 32 /* This file contains the default configuration macro definitions for */ |
| 33 /* a standard build of the FreeType library. There are three ways to */ |
| 34 /* use this file to build project-specific versions of the library: */ |
| 35 /* */ |
| 36 /* - You can modify this file by hand, but this is not recommended in */ |
| 37 /* cases where you would like to build several versions of the */ |
| 38 /* library from a single source directory. */ |
| 39 /* */ |
| 40 /* - You can put a copy of this file in your build directory, more */ |
| 41 /* precisely in `$BUILD/freetype/config/ftoption.h', where `$BUILD' */ |
| 42 /* is the name of a directory that is included _before_ the FreeType */ |
| 43 /* include path during compilation. */ |
| 44 /* */ |
| 45 /* The default FreeType Makefiles and Jamfiles use the build */ |
| 46 /* directory `builds/<system>' by default, but you can easily change */ |
| 47 /* that for your own projects. */ |
| 48 /* */ |
| 49 /* - Copy the file <ft2build.h> to `$BUILD/ft2build.h' and modify it */ |
| 50 /* slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to */ |
| 51 /* locate this file during the build. For example, */ |
| 52 /* */ |
| 53 /* #define FT_CONFIG_OPTIONS_H <myftoptions.h> */ |
| 54 /* #include <freetype/config/ftheader.h> */ |
| 55 /* */ |
| 56 /* will use `$BUILD/myftoptions.h' instead of this file for macro */ |
| 57 /* definitions. */ |
| 58 /* */ |
| 59 /* Note also that you can similarly pre-define the macro */ |
| 60 /* FT_CONFIG_MODULES_H used to locate the file listing of the modules */ |
| 61 /* that are statically linked to the library at compile time. By */ |
| 62 /* default, this file is <freetype/config/ftmodule.h>. */ |
| 63 /* */ |
| 64 /* We highly recommend using the third method whenever possible. */ |
| 65 /* */ |
| 66 /*************************************************************************/ |
| 67 |
| 68 |
| 69 /*************************************************************************/ |
| 70 /*************************************************************************/ |
| 71 /**** ****/ |
| 72 /**** G E N E R A L F R E E T Y P E 2 C O N F I G U R A T I O N ****/ |
| 73 /**** ****/ |
| 74 /*************************************************************************/ |
| 75 /*************************************************************************/ |
| 76 |
| 77 |
| 78 /*************************************************************************/ |
| 79 /* */ |
| 80 /* Uncomment the line below if you want to activate sub-pixel rendering */ |
| 81 /* (a.k.a. LCD rendering, or ClearType) in this build of the library. */ |
| 82 /* */ |
| 83 /* Note that this feature is covered by several Microsoft patents */ |
| 84 /* and should not be activated in any default build of the library. */ |
| 85 /* */ |
| 86 /* This macro has no impact on the FreeType API, only on its */ |
| 87 /* _implementation_. For example, using FT_RENDER_MODE_LCD when calling */ |
| 88 /* FT_Render_Glyph still generates a bitmap that is 3 times larger than */ |
| 89 /* the original size; the difference will be that each triplet of */ |
| 90 /* subpixels has R=G=B. */ |
| 91 /* */ |
| 92 /* This is done to allow FreeType clients to run unmodified, forcing */ |
| 93 /* them to display normal gray-level anti-aliased glyphs. */ |
| 94 /* */ |
| 95 /* #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING */ |
| 96 |
| 97 |
| 98 /*************************************************************************/ |
| 99 /* */ |
| 100 /* Many compilers provide a non-ANSI 64-bit data type that can be used */ |
| 101 /* by FreeType to speed up some computations. However, this will create */ |
| 102 /* some problems when compiling the library in strict ANSI mode. */ |
| 103 /* */ |
| 104 /* For this reason, the use of 64-bit integers is normally disabled when */ |
| 105 /* the __STDC__ macro is defined. You can however disable this by */ |
| 106 /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here. */ |
| 107 /* */ |
| 108 /* For most compilers, this will only create compilation warnings when */ |
| 109 /* building the library. */ |
| 110 /* */ |
| 111 /* ObNote: The compiler-specific 64-bit integers are detected in the */ |
| 112 /* file `ftconfig.h' either statically or through the */ |
| 113 /* `configure' script on supported platforms. */ |
| 114 /* */ |
| 115 #undef FT_CONFIG_OPTION_FORCE_INT64 |
| 116 |
| 117 |
| 118 /*************************************************************************/ |
| 119 /* */ |
| 120 /* If this macro is defined, do not try to use an assembler version of */ |
| 121 /* performance-critical functions (e.g. FT_MulFix). You should only do */ |
| 122 /* that to verify that the assembler function works properly, or to */ |
| 123 /* execute benchmark tests of the various implementations. */ |
| 124 /* #define FT_CONFIG_OPTION_NO_ASSEMBLER */ |
| 125 |
| 126 |
| 127 /*************************************************************************/ |
| 128 /* */ |
| 129 /* If this macro is defined, try to use an inlined assembler version of */ |
| 130 /* the `FT_MulFix' function, which is a `hotspot' when loading and */ |
| 131 /* hinting glyphs, and which should be executed as fast as possible. */ |
| 132 /* */ |
| 133 /* Note that if your compiler or CPU is not supported, this will default */ |
| 134 /* to the standard and portable implementation found in `ftcalc.c'. */ |
| 135 /* */ |
| 136 #define FT_CONFIG_OPTION_INLINE_MULFIX |
| 137 |
| 138 |
| 139 /*************************************************************************/ |
| 140 /* */ |
| 141 /* LZW-compressed file support. */ |
| 142 /* */ |
| 143 /* FreeType now handles font files that have been compressed with the */ |
| 144 /* `compress' program. This is mostly used to parse many of the PCF */ |
| 145 /* files that come with various X11 distributions. The implementation */ |
| 146 /* uses NetBSD's `zopen' to partially uncompress the file on the fly */ |
| 147 /* (see src/lzw/ftgzip.c). */ |
| 148 /* */ |
| 149 /* Define this macro if you want to enable this `feature'. */ |
| 150 /* */ |
| 151 #define FT_CONFIG_OPTION_USE_LZW |
| 152 |
| 153 |
| 154 /*************************************************************************/ |
| 155 /* */ |
| 156 /* Gzip-compressed file support. */ |
| 157 /* */ |
| 158 /* FreeType now handles font files that have been compressed with the */ |
| 159 /* `gzip' program. This is mostly used to parse many of the PCF files */ |
| 160 /* that come with XFree86. The implementation uses `zlib' to */ |
| 161 /* partially uncompress the file on the fly (see src/gzip/ftgzip.c). */ |
| 162 /* */ |
| 163 /* Define this macro if you want to enable this `feature'. See also */ |
| 164 /* the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below. */ |
| 165 /* */ |
| 166 #define FT_CONFIG_OPTION_USE_ZLIB |
| 167 |
| 168 |
| 169 /*************************************************************************/ |
| 170 /* */ |
| 171 /* ZLib library selection */ |
| 172 /* */ |
| 173 /* This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined. */ |
| 174 /* It allows FreeType's `ftgzip' component to link to the system's */ |
| 175 /* installation of the ZLib library. This is useful on systems like */ |
| 176 /* Unix or VMS where it generally is already available. */ |
| 177 /* */ |
| 178 /* If you let it undefined, the component will use its own copy */ |
| 179 /* of the zlib sources instead. These have been modified to be */ |
| 180 /* included directly within the component and *not* export external */ |
| 181 /* function names. This allows you to link any program with FreeType */ |
| 182 /* _and_ ZLib without linking conflicts. */ |
| 183 /* */ |
| 184 /* Do not #undef this macro here since the build system might define */ |
| 185 /* it for certain configurations only. */ |
| 186 /* */ |
| 187 /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */ |
| 188 |
| 189 |
| 190 /*************************************************************************/ |
| 191 /* */ |
| 192 /* DLL export compilation */ |
| 193 /* */ |
| 194 /* When compiling FreeType as a DLL, some systems/compilers need a */ |
| 195 /* special keyword in front OR after the return type of function */ |
| 196 /* declarations. */ |
| 197 /* */ |
| 198 /* Two macros are used within the FreeType source code to define */ |
| 199 /* exported library functions: FT_EXPORT and FT_EXPORT_DEF. */ |
| 200 /* */ |
| 201 /* FT_EXPORT( return_type ) */ |
| 202 /* */ |
| 203 /* is used in a function declaration, as in */ |
| 204 /* */ |
| 205 /* FT_EXPORT( FT_Error ) */ |
| 206 /* FT_Init_FreeType( FT_Library* alibrary ); */ |
| 207 /* */ |
| 208 /* */ |
| 209 /* FT_EXPORT_DEF( return_type ) */ |
| 210 /* */ |
| 211 /* is used in a function definition, as in */ |
| 212 /* */ |
| 213 /* FT_EXPORT_DEF( FT_Error ) */ |
| 214 /* FT_Init_FreeType( FT_Library* alibrary ) */ |
| 215 /* { */ |
| 216 /* ... some code ... */ |
| 217 /* return FT_Err_Ok; */ |
| 218 /* } */ |
| 219 /* */ |
| 220 /* You can provide your own implementation of FT_EXPORT and */ |
| 221 /* FT_EXPORT_DEF here if you want. If you leave them undefined, they */ |
| 222 /* will be later automatically defined as `extern return_type' to */ |
| 223 /* allow normal compilation. */ |
| 224 /* */ |
| 225 /* Do not #undef these macros here since the build system might define */ |
| 226 /* them for certain configurations only. */ |
| 227 /* */ |
| 228 /* #define FT_EXPORT(x) extern x */ |
| 229 /* #define FT_EXPORT_DEF(x) x */ |
| 230 |
| 231 |
| 232 /*************************************************************************/ |
| 233 /* */ |
| 234 /* Glyph Postscript Names handling */ |
| 235 /* */ |
| 236 /* By default, FreeType 2 is compiled with the `psnames' module. This */ |
| 237 /* module is in charge of converting a glyph name string into a */ |
| 238 /* Unicode value, or return a Macintosh standard glyph name for the */ |
| 239 /* use with the TrueType `post' table. */ |
| 240 /* */ |
| 241 /* Undefine this macro if you do not want `psnames' compiled in your */ |
| 242 /* build of FreeType. This has the following effects: */ |
| 243 /* */ |
| 244 /* - The TrueType driver will provide its own set of glyph names, */ |
| 245 /* if you build it to support postscript names in the TrueType */ |
| 246 /* `post' table. */ |
| 247 /* */ |
| 248 /* - The Type 1 driver will not be able to synthesize a Unicode */ |
| 249 /* charmap out of the glyphs found in the fonts. */ |
| 250 /* */ |
| 251 /* You would normally undefine this configuration macro when building */ |
| 252 /* a version of FreeType that doesn't contain a Type 1 or CFF driver. */ |
| 253 /* */ |
| 254 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES |
| 255 |
| 256 |
| 257 /*************************************************************************/ |
| 258 /* */ |
| 259 /* Postscript Names to Unicode Values support */ |
| 260 /* */ |
| 261 /* By default, FreeType 2 is built with the `PSNames' module compiled */ |
| 262 /* in. Among other things, the module is used to convert a glyph name */ |
| 263 /* into a Unicode value. This is especially useful in order to */ |
| 264 /* synthesize on the fly a Unicode charmap from the CFF/Type 1 driver */ |
| 265 /* through a big table named the `Adobe Glyph List' (AGL). */ |
| 266 /* */ |
| 267 /* Undefine this macro if you do not want the Adobe Glyph List */ |
| 268 /* compiled in your `PSNames' module. The Type 1 driver will not be */ |
| 269 /* able to synthesize a Unicode charmap out of the glyphs found in the */ |
| 270 /* fonts. */ |
| 271 /* */ |
| 272 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST |
| 273 |
| 274 |
| 275 /*************************************************************************/ |
| 276 /* */ |
| 277 /* Support for Mac fonts */ |
| 278 /* */ |
| 279 /* Define this macro if you want support for outline fonts in Mac */ |
| 280 /* format (mac dfont, mac resource, macbinary containing a mac */ |
| 281 /* resource) on non-Mac platforms. */ |
| 282 /* */ |
| 283 /* Note that the `FOND' resource isn't checked. */ |
| 284 /* */ |
| 285 #define FT_CONFIG_OPTION_MAC_FONTS |
| 286 |
| 287 |
| 288 /*************************************************************************/ |
| 289 /* */ |
| 290 /* Guessing methods to access embedded resource forks */ |
| 291 /* */ |
| 292 /* Enable extra Mac fonts support on non-Mac platforms (e.g. */ |
| 293 /* GNU/Linux). */ |
| 294 /* */ |
| 295 /* Resource forks which include fonts data are stored sometimes in */ |
| 296 /* locations which users or developers don't expected. In some cases, */ |
| 297 /* resource forks start with some offset from the head of a file. In */ |
| 298 /* other cases, the actual resource fork is stored in file different */ |
| 299 /* from what the user specifies. If this option is activated, */ |
| 300 /* FreeType tries to guess whether such offsets or different file */ |
| 301 /* names must be used. */ |
| 302 /* */ |
| 303 /* Note that normal, direct access of resource forks is controlled via */ |
| 304 /* the FT_CONFIG_OPTION_MAC_FONTS option. */ |
| 305 /* */ |
| 306 #ifdef FT_CONFIG_OPTION_MAC_FONTS |
| 307 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK |
| 308 #endif |
| 309 |
| 310 |
| 311 /*************************************************************************/ |
| 312 /* */ |
| 313 /* Allow the use of FT_Incremental_Interface to load typefaces that */ |
| 314 /* contain no glyph data, but supply it via a callback function. */ |
| 315 /* This allows FreeType to be used with the PostScript language, using */ |
| 316 /* the GhostScript interpreter. */ |
| 317 /* */ |
| 318 /* #define FT_CONFIG_OPTION_INCREMENTAL */ |
| 319 |
| 320 |
| 321 /*************************************************************************/ |
| 322 /* */ |
| 323 /* The size in bytes of the render pool used by the scan-line converter */ |
| 324 /* to do all of its work. */ |
| 325 /* */ |
| 326 /* This must be greater than 4KByte if you use FreeType to rasterize */ |
| 327 /* glyphs; otherwise, you may set it to zero to avoid unnecessary */ |
| 328 /* allocation of the render pool. */ |
| 329 /* */ |
| 330 #define FT_RENDER_POOL_SIZE 16384L |
| 331 |
| 332 |
| 333 /*************************************************************************/ |
| 334 /* */ |
| 335 /* FT_MAX_MODULES */ |
| 336 /* */ |
| 337 /* The maximum number of modules that can be registered in a single */ |
| 338 /* FreeType library object. 32 is the default. */ |
| 339 /* */ |
| 340 #define FT_MAX_MODULES 32 |
| 341 |
| 342 |
| 343 /*************************************************************************/ |
| 344 /* */ |
| 345 /* Debug level */ |
| 346 /* */ |
| 347 /* FreeType can be compiled in debug or trace mode. In debug mode, */ |
| 348 /* errors are reported through the `ftdebug' component. In trace */ |
| 349 /* mode, additional messages are sent to the standard output during */ |
| 350 /* execution. */ |
| 351 /* */ |
| 352 /* Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. */ |
| 353 /* Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. */ |
| 354 /* */ |
| 355 /* Don't define any of these macros to compile in `release' mode! */ |
| 356 /* */ |
| 357 /* Do not #undef these macros here since the build system might define */ |
| 358 /* them for certain configurations only. */ |
| 359 /* */ |
| 360 /* #define FT_DEBUG_LEVEL_ERROR */ |
| 361 /* #define FT_DEBUG_LEVEL_TRACE */ |
| 362 |
| 363 |
| 364 /*************************************************************************/ |
| 365 /* */ |
| 366 /* Memory Debugging */ |
| 367 /* */ |
| 368 /* FreeType now comes with an integrated memory debugger that is */ |
| 369 /* capable of detecting simple errors like memory leaks or double */ |
| 370 /* deletes. To compile it within your build of the library, you */ |
| 371 /* should define FT_DEBUG_MEMORY here. */ |
| 372 /* */ |
| 373 /* Note that the memory debugger is only activated at runtime when */ |
| 374 /* when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */ |
| 375 /* */ |
| 376 /* Do not #undef this macro here since the build system might define */ |
| 377 /* it for certain configurations only. */ |
| 378 /* */ |
| 379 /* #define FT_DEBUG_MEMORY */ |
| 380 |
| 381 |
| 382 /*************************************************************************/ |
| 383 /* */ |
| 384 /* Module errors */ |
| 385 /* */ |
| 386 /* If this macro is set (which is _not_ the default), the higher byte */ |
| 387 /* of an error code gives the module in which the error has occurred, */ |
| 388 /* while the lower byte is the real error code. */ |
| 389 /* */ |
| 390 /* Setting this macro makes sense for debugging purposes only, since */ |
| 391 /* it would break source compatibility of certain programs that use */ |
| 392 /* FreeType 2. */ |
| 393 /* */ |
| 394 /* More details can be found in the files ftmoderr.h and fterrors.h. */ |
| 395 /* */ |
| 396 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS |
| 397 |
| 398 |
| 399 /*************************************************************************/ |
| 400 /* */ |
| 401 /* Position Independent Code */ |
| 402 /* */ |
| 403 /* If this macro is set (which is _not_ the default), FreeType2 will */ |
| 404 /* avoid creating constants that require address fixups. Instead the */ |
| 405 /* constants will be moved into a struct and additional intialization */ |
| 406 /* code will be used. */ |
| 407 /* */ |
| 408 /* Setting this macro is needed for systems that prohibit address */ |
| 409 /* fixups, such as BREW. */ |
| 410 /* */ |
| 411 /* #define FT_CONFIG_OPTION_PIC */ |
| 412 |
| 413 |
| 414 /*************************************************************************/ |
| 415 /*************************************************************************/ |
| 416 /**** ****/ |
| 417 /**** S F N T D R I V E R C O N F I G U R A T I O N ****/ |
| 418 /**** ****/ |
| 419 /*************************************************************************/ |
| 420 /*************************************************************************/ |
| 421 |
| 422 |
| 423 /*************************************************************************/ |
| 424 /* */ |
| 425 /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support */ |
| 426 /* embedded bitmaps in all formats using the SFNT module (namely */ |
| 427 /* TrueType & OpenType). */ |
| 428 /* */ |
| 429 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS |
| 430 |
| 431 |
| 432 /*************************************************************************/ |
| 433 /* */ |
| 434 /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to */ |
| 435 /* load and enumerate the glyph Postscript names in a TrueType or */ |
| 436 /* OpenType file. */ |
| 437 /* */ |
| 438 /* Note that when you do not compile the `PSNames' module by undefining */ |
| 439 /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will */ |
| 440 /* contain additional code used to read the PS Names table from a font. */ |
| 441 /* */ |
| 442 /* (By default, the module uses `PSNames' to extract glyph names.) */ |
| 443 /* */ |
| 444 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES |
| 445 |
| 446 |
| 447 /*************************************************************************/ |
| 448 /* */ |
| 449 /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to */ |
| 450 /* access the internal name table in a SFNT-based format like TrueType */ |
| 451 /* or OpenType. The name table contains various strings used to */ |
| 452 /* describe the font, like family name, copyright, version, etc. It */ |
| 453 /* does not contain any glyph name though. */ |
| 454 /* */ |
| 455 /* Accessing SFNT names is done through the functions declared in */ |
| 456 /* `freetype/ftsnames.h'. */ |
| 457 /* */ |
| 458 #define TT_CONFIG_OPTION_SFNT_NAMES |
| 459 |
| 460 |
| 461 /*************************************************************************/ |
| 462 /* */ |
| 463 /* TrueType CMap support */ |
| 464 /* */ |
| 465 /* Here you can fine-tune which TrueType CMap table format shall be */ |
| 466 /* supported. */ |
| 467 #define TT_CONFIG_CMAP_FORMAT_0 |
| 468 #define TT_CONFIG_CMAP_FORMAT_2 |
| 469 #define TT_CONFIG_CMAP_FORMAT_4 |
| 470 #define TT_CONFIG_CMAP_FORMAT_6 |
| 471 #define TT_CONFIG_CMAP_FORMAT_8 |
| 472 #define TT_CONFIG_CMAP_FORMAT_10 |
| 473 #define TT_CONFIG_CMAP_FORMAT_12 |
| 474 #define TT_CONFIG_CMAP_FORMAT_13 |
| 475 #define TT_CONFIG_CMAP_FORMAT_14 |
| 476 |
| 477 |
| 478 /*************************************************************************/ |
| 479 /*************************************************************************/ |
| 480 /**** ****/ |
| 481 /**** 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 ****/ |
| 482 /**** ****/ |
| 483 /*************************************************************************/ |
| 484 /*************************************************************************/ |
| 485 |
| 486 /*************************************************************************/ |
| 487 /* */ |
| 488 /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */ |
| 489 /* a bytecode interpreter in the TrueType driver. Note that there are */ |
| 490 /* important patent issues related to the use of the interpreter. */ |
| 491 /* */ |
| 492 /* By undefining this, you will only compile the code necessary to load */ |
| 493 /* TrueType glyphs without hinting. */ |
| 494 /* */ |
| 495 /* Do not #undef this macro here, since the build system might */ |
| 496 /* define it for certain configurations only. */ |
| 497 /* */ |
| 498 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
| 499 |
| 500 |
| 501 /*************************************************************************/ |
| 502 /* */ |
| 503 /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */ |
| 504 /* of the TrueType bytecode interpreter is used that doesn't implement */ |
| 505 /* any of the patented opcodes and algorithms. Note that the */ |
| 506 /* TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* if you define */ |
| 507 /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, either define */ |
| 508 /* TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */ |
| 509 /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */ |
| 510 /* */ |
| 511 /* This macro is only useful for a small number of font files (mostly */ |
| 512 /* for Asian scripts) that require bytecode interpretation to properly */ |
| 513 /* load glyphs. For all other fonts, this produces unpleasant results, */ |
| 514 /* thus the unpatented interpreter is never used to load glyphs from */ |
| 515 /* TrueType fonts unless one of the following two options is used. */ |
| 516 /* */ |
| 517 /* - The unpatented interpreter is explicitly activated by the user */ |
| 518 /* through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag */ |
| 519 /* when opening the FT_Face. */ |
| 520 /* */ |
| 521 /* - FreeType detects that the FT_Face corresponds to one of the */ |
| 522 /* `trick' fonts (e.g., `Mingliu') it knows about. The font engine */ |
| 523 /* contains a hard-coded list of font names and other matching */ |
| 524 /* parameters (see function `tt_face_init' in file */ |
| 525 /* `src/truetype/ttobjs.c'). */ |
| 526 /* */ |
| 527 /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */ |
| 528 /* */ |
| 529 /* { */ |
| 530 /* FT_Parameter parameter; */ |
| 531 /* FT_Open_Args open_args; */ |
| 532 /* */ |
| 533 /* */ |
| 534 /* parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING; */ |
| 535 /* */ |
| 536 /* open_args.flags = FT_OPEN_PATHNAME | FT_OPEN_PARAMS; */ |
| 537 /* open_args.pathname = my_font_pathname; */ |
| 538 /* open_args.num_params = 1; */ |
| 539 /* open_args.params = ¶meter; */ |
| 540 /* */ |
| 541 /* error = FT_Open_Face( library, &open_args, index, &face ); */ |
| 542 /* ... */ |
| 543 /* } */ |
| 544 /* */ |
| 545 #define TT_CONFIG_OPTION_UNPATENTED_HINTING |
| 546 |
| 547 |
| 548 /*************************************************************************/ |
| 549 /* */ |
| 550 /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType */ |
| 551 /* bytecode interpreter with a huge switch statement, rather than a call */ |
| 552 /* table. This results in smaller and faster code for a number of */ |
| 553 /* architectures. */ |
| 554 /* */ |
| 555 /* Note however that on some compiler/processor combinations, undefining */ |
| 556 /* this macro will generate faster, though larger, code. */ |
| 557 /* */ |
| 558 #define TT_CONFIG_OPTION_INTERPRETER_SWITCH |
| 559 |
| 560 |
| 561 /*************************************************************************/ |
| 562 /* */ |
| 563 /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the */ |
| 564 /* TrueType glyph loader to use Apple's definition of how to handle */ |
| 565 /* component offsets in composite glyphs. */ |
| 566 /* */ |
| 567 /* Apple and MS disagree on the default behavior of component offsets */ |
| 568 /* in composites. Apple says that they should be scaled by the scaling */ |
| 569 /* factors in the transformation matrix (roughly, it's more complex) */ |
| 570 /* while MS says they should not. OpenType defines two bits in the */ |
| 571 /* composite flags array which can be used to disambiguate, but old */ |
| 572 /* fonts will not have them. */ |
| 573 /* */ |
| 574 /* http://partners.adobe.com/asn/developer/opentype/glyf.html */ |
| 575 /* http://fonts.apple.com/TTRefMan/RM06/Chap6glyf.html */ |
| 576 /* */ |
| 577 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED |
| 578 |
| 579 |
| 580 /*************************************************************************/ |
| 581 /* */ |
| 582 /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */ |
| 583 /* support for Apple's distortable font technology (fvar, gvar, cvar, */ |
| 584 /* and avar tables). This has many similarities to Type 1 Multiple */ |
| 585 /* Masters support. */ |
| 586 /* */ |
| 587 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT |
| 588 |
| 589 |
| 590 /*************************************************************************/ |
| 591 /* */ |
| 592 /* Define TT_CONFIG_OPTION_BDF if you want to include support for */ |
| 593 /* an embedded `BDF ' table within SFNT-based bitmap formats. */ |
| 594 /* */ |
| 595 #define TT_CONFIG_OPTION_BDF |
| 596 |
| 597 |
| 598 /*************************************************************************/ |
| 599 /*************************************************************************/ |
| 600 /**** ****/ |
| 601 /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/ |
| 602 /**** ****/ |
| 603 /*************************************************************************/ |
| 604 /*************************************************************************/ |
| 605 |
| 606 |
| 607 /*************************************************************************/ |
| 608 /* */ |
| 609 /* T1_MAX_DICT_DEPTH is the maximal depth of nest dictionaries and */ |
| 610 /* arrays in the Type 1 stream (see t1load.c). A minimum of 4 is */ |
| 611 /* required. */ |
| 612 /* */ |
| 613 #define T1_MAX_DICT_DEPTH 5 |
| 614 |
| 615 |
| 616 /*************************************************************************/ |
| 617 /* */ |
| 618 /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */ |
| 619 /* calls during glyph loading. */ |
| 620 /* */ |
| 621 #define T1_MAX_SUBRS_CALLS 16 |
| 622 |
| 623 |
| 624 /*************************************************************************/ |
| 625 /* */ |
| 626 /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */ |
| 627 /* minimum of 16 is required. */ |
| 628 /* */ |
| 629 /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */ |
| 630 /* */ |
| 631 #define T1_MAX_CHARSTRINGS_OPERANDS 256 |
| 632 |
| 633 |
| 634 /*************************************************************************/ |
| 635 /* */ |
| 636 /* Define this configuration macro if you want to prevent the */ |
| 637 /* compilation of `t1afm', which is in charge of reading Type 1 AFM */ |
| 638 /* files into an existing face. Note that if set, the T1 driver will be */ |
| 639 /* unable to produce kerning distances. */ |
| 640 /* */ |
| 641 #undef T1_CONFIG_OPTION_NO_AFM |
| 642 |
| 643 |
| 644 /*************************************************************************/ |
| 645 /* */ |
| 646 /* Define this configuration macro if you want to prevent the */ |
| 647 /* compilation of the Multiple Masters font support in the Type 1 */ |
| 648 /* driver. */ |
| 649 /* */ |
| 650 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT |
| 651 |
| 652 |
| 653 /*************************************************************************/ |
| 654 /*************************************************************************/ |
| 655 /**** ****/ |
| 656 /**** 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 ****/ |
| 657 /**** ****/ |
| 658 /*************************************************************************/ |
| 659 /*************************************************************************/ |
| 660 |
| 661 |
| 662 /*************************************************************************/ |
| 663 /* */ |
| 664 /* Compile autofit module with CJK (Chinese, Japanese, Korean) script */ |
| 665 /* support. */ |
| 666 /* */ |
| 667 #define AF_CONFIG_OPTION_CJK |
| 668 |
| 669 /*************************************************************************/ |
| 670 /* */ |
| 671 /* Compile autofit module with Indic script support. */ |
| 672 /* */ |
| 673 #define AF_CONFIG_OPTION_INDIC |
| 674 |
| 675 /* */ |
| 676 |
| 677 |
| 678 /* |
| 679 * Define this variable if you want to keep the layout of internal |
| 680 * structures that was used prior to FreeType 2.2. This also compiles in |
| 681 * a few obsolete functions to avoid linking problems on typical Unix |
| 682 * distributions. |
| 683 * |
| 684 * For embedded systems or building a new distribution from scratch, it |
| 685 * is recommended to disable the macro since it reduces the library's code |
| 686 * size and activates a few memory-saving optimizations as well. |
| 687 */ |
| 688 #define FT_CONFIG_OPTION_OLD_INTERNALS |
| 689 |
| 690 |
| 691 /* |
| 692 * This macro is defined if either unpatented or native TrueType |
| 693 * hinting is requested by the definitions above. |
| 694 */ |
| 695 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER |
| 696 #define TT_USE_BYTECODE_INTERPRETER |
| 697 #undef TT_CONFIG_OPTION_UNPATENTED_HINTING |
| 698 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING |
| 699 #define TT_USE_BYTECODE_INTERPRETER |
| 700 #endif |
| 701 |
| 702 FT_END_HEADER |
| 703 |
| 704 |
| 705 #endif /* __FTOPTION_H__ */ |
| 706 |
| 707 |
| 708 /* END */ |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 138123004:
Make layout test FreeType more like Lucid FreeType. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src/