src/third_party/freetype2/include/ftoption.h

   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     = &parameter;                                */
 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 */