src/third_party/freetype2/src/include/freetype/config/ftoption.h

   1 /***************************************************************************/
   2 /*                                                                         */
   3 /*  ftoption.h                                                             */
   4 /*                                                                         */
   5 /*    User-selectable configuration macros (specification only).           */
   6 /*                                                                         */
   7 /*  Copyright 1996-2011 by                                                 */
   8 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
   9 /*                                                                         */
  10 /*  This file is part of the FreeType project, and may only be used,       */
  11 /*  modified, and distributed under the terms of the FreeType project      */
  12 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
  13 /*  this file you indicate that you have read the license and              */
  14 /*  understand and accept it fully.                                        */
  15 /*                                                                         */
  16 /***************************************************************************/
  17
  18
  19 #ifndef __FTOPTION_H__
  20 #define __FTOPTION_H__
  21
  22
  23 #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 wider than   */
  89   /* the original size in case this macro isn't defined; however, each     */
  90   /* triplet of 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   /* Bzip2-compressed file support.                                        */
 193   /*                                                                       */
 194   /*   FreeType now handles font files that have been compressed with the  */
 195   /*   `bzip2' program.  This is mostly used to parse many of the PCF      */
 196   /*   files that come with XFree86.  The implementation uses `libbz2' to  */
 197   /*   partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */
 198   /*   Contrary to gzip, bzip2 currently is not included and need to use   */
 199   /*   the system available bzip2 implementation.                          */
 200   /*                                                                       */
 201   /*   Define this macro if you want to enable this `feature'.             */
 202   /*                                                                       */
 203 /* #define FT_CONFIG_OPTION_USE_BZIP2 */
 204
 205
 206   /*************************************************************************/
 207   /*                                                                       */
 208   /* Define to disable the use of file stream functions and types, FILE,   */
 209   /* fopen() etc.  Enables the use of smaller system libraries on embedded */
 210   /* systems that have multiple system libraries, some with or without     */
 211   /* file stream support, in the cases where file stream support is not    */
 212   /* necessary such as memory loading of font files.                       */
 213   /*                                                                       */
 214 /* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */
 215
 216
 217   /*************************************************************************/
 218   /*                                                                       */
 219   /* DLL export compilation                                                */
 220   /*                                                                       */
 221   /*   When compiling FreeType as a DLL, some systems/compilers need a     */
 222   /*   special keyword in front OR after the return type of function       */
 223   /*   declarations.                                                       */
 224   /*                                                                       */
 225   /*   Two macros are used within the FreeType source code to define       */
 226   /*   exported library functions: FT_EXPORT and FT_EXPORT_DEF.            */
 227   /*                                                                       */
 228   /*     FT_EXPORT( return_type )                                          */
 229   /*                                                                       */
 230   /*       is used in a function declaration, as in                        */
 231   /*                                                                       */
 232   /*         FT_EXPORT( FT_Error )                                         */
 233   /*         FT_Init_FreeType( FT_Library*  alibrary );                    */
 234   /*                                                                       */
 235   /*                                                                       */
 236   /*     FT_EXPORT_DEF( return_type )                                      */
 237   /*                                                                       */
 238   /*       is used in a function definition, as in                         */
 239   /*                                                                       */
 240   /*         FT_EXPORT_DEF( FT_Error )                                     */
 241   /*         FT_Init_FreeType( FT_Library*  alibrary )                     */
 242   /*         {                                                             */
 243   /*           ... some code ...                                           */
 244   /*           return FT_Err_Ok;                                           */
 245   /*         }                                                             */
 246   /*                                                                       */
 247   /*   You can provide your own implementation of FT_EXPORT and            */
 248   /*   FT_EXPORT_DEF here if you want.  If you leave them undefined, they  */
 249   /*   will be later automatically defined as `extern return_type' to      */
 250   /*   allow normal compilation.                                           */
 251   /*                                                                       */
 252   /*   Do not #undef these macros here since the build system might define */
 253   /*   them for certain configurations only.                               */
 254   /*                                                                       */
 255 /* #define FT_EXPORT(x)      extern x */
 256 /* #define FT_EXPORT_DEF(x)  x */
 257
 258
 259   /*************************************************************************/
 260   /*                                                                       */
 261   /* Glyph Postscript Names handling                                       */
 262   /*                                                                       */
 263   /*   By default, FreeType 2 is compiled with the `psnames' module.  This */
 264   /*   module is in charge of converting a glyph name string into a        */
 265   /*   Unicode value, or return a Macintosh standard glyph name for the    */
 266   /*   use with the TrueType `post' table.                                 */
 267   /*                                                                       */
 268   /*   Undefine this macro if you do not want `psnames' compiled in your   */
 269   /*   build of FreeType.  This has the following effects:                 */
 270   /*                                                                       */
 271   /*   - The TrueType driver will provide its own set of glyph names,      */
 272   /*     if you build it to support postscript names in the TrueType       */
 273   /*     `post' table.                                                     */
 274   /*                                                                       */
 275   /*   - The Type 1 driver will not be able to synthesize a Unicode        */
 276   /*     charmap out of the glyphs found in the fonts.                     */
 277   /*                                                                       */
 278   /*   You would normally undefine this configuration macro when building  */
 279   /*   a version of FreeType that doesn't contain a Type 1 or CFF driver.  */
 280   /*                                                                       */
 281 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES
 282
 283
 284   /*************************************************************************/
 285   /*                                                                       */
 286   /* Postscript Names to Unicode Values support                            */
 287   /*                                                                       */
 288   /*   By default, FreeType 2 is built with the `PSNames' module compiled  */
 289   /*   in.  Among other things, the module is used to convert a glyph name */
 290   /*   into a Unicode value.  This is especially useful in order to        */
 291   /*   synthesize on the fly a Unicode charmap from the CFF/Type 1 driver  */
 292   /*   through a big table named the `Adobe Glyph List' (AGL).             */
 293   /*                                                                       */
 294   /*   Undefine this macro if you do not want the Adobe Glyph List         */
 295   /*   compiled in your `PSNames' module.  The Type 1 driver will not be   */
 296   /*   able to synthesize a Unicode charmap out of the glyphs found in the */
 297   /*   fonts.                                                              */
 298   /*                                                                       */
 299 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST
 300
 301
 302   /*************************************************************************/
 303   /*                                                                       */
 304   /* Support for Mac fonts                                                 */
 305   /*                                                                       */
 306   /*   Define this macro if you want support for outline fonts in Mac      */
 307   /*   format (mac dfont, mac resource, macbinary containing a mac         */
 308   /*   resource) on non-Mac platforms.                                     */
 309   /*                                                                       */
 310   /*   Note that the `FOND' resource isn't checked.                        */
 311   /*                                                                       */
 312 #define FT_CONFIG_OPTION_MAC_FONTS
 313
 314
 315   /*************************************************************************/
 316   /*                                                                       */
 317   /* Guessing methods to access embedded resource forks                    */
 318   /*                                                                       */
 319   /*   Enable extra Mac fonts support on non-Mac platforms (e.g.           */
 320   /*   GNU/Linux).                                                         */
 321   /*                                                                       */
 322   /*   Resource forks which include fonts data are stored sometimes in     */
 323   /*   locations which users or developers don't expected.  In some cases, */
 324   /*   resource forks start with some offset from the head of a file.  In  */
 325   /*   other cases, the actual resource fork is stored in file different   */
 326   /*   from what the user specifies.  If this option is activated,         */
 327   /*   FreeType tries to guess whether such offsets or different file      */
 328   /*   names must be used.                                                 */
 329   /*                                                                       */
 330   /*   Note that normal, direct access of resource forks is controlled via */
 331   /*   the FT_CONFIG_OPTION_MAC_FONTS option.                              */
 332   /*                                                                       */
 333 #ifdef FT_CONFIG_OPTION_MAC_FONTS
 334 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK
 335 #endif
 336
 337
 338   /*************************************************************************/
 339   /*                                                                       */
 340   /* Allow the use of FT_Incremental_Interface to load typefaces that      */
 341   /* contain no glyph data, but supply it via a callback function.         */
 342   /* This is required by clients supporting document formats which         */
 343   /* supply font data incrementally as the document is parsed, such        */
 344   /* as the Ghostscript interpreter for the PostScript language.           */
 345   /*                                                                       */
 346 #define FT_CONFIG_OPTION_INCREMENTAL
 347
 348
 349   /*************************************************************************/
 350   /*                                                                       */
 351   /* The size in bytes of the render pool used by the scan-line converter  */
 352   /* to do all of its work.                                                */
 353   /*                                                                       */
 354   /* This must be greater than 4KByte if you use FreeType to rasterize     */
 355   /* glyphs; otherwise, you may set it to zero to avoid unnecessary        */
 356   /* allocation of the render pool.                                        */
 357   /*                                                                       */
 358 #define FT_RENDER_POOL_SIZE  16384L
 359
 360
 361   /*************************************************************************/
 362   /*                                                                       */
 363   /* FT_MAX_MODULES                                                        */
 364   /*                                                                       */
 365   /*   The maximum number of modules that can be registered in a single    */
 366   /*   FreeType library object.  32 is the default.                        */
 367   /*                                                                       */
 368 #define FT_MAX_MODULES  32
 369
 370
 371   /*************************************************************************/
 372   /*                                                                       */
 373   /* Debug level                                                           */
 374   /*                                                                       */
 375   /*   FreeType can be compiled in debug or trace mode.  In debug mode,    */
 376   /*   errors are reported through the `ftdebug' component.  In trace      */
 377   /*   mode, additional messages are sent to the standard output during    */
 378   /*   execution.                                                          */
 379   /*                                                                       */
 380   /*   Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode.     */
 381   /*   Define FT_DEBUG_LEVEL_TRACE to build it in trace mode.              */
 382   /*                                                                       */
 383   /*   Don't define any of these macros to compile in `release' mode!      */
 384   /*                                                                       */
 385   /*   Do not #undef these macros here since the build system might define */
 386   /*   them for certain configurations only.                               */
 387   /*                                                                       */
 388 /* #define FT_DEBUG_LEVEL_ERROR */
 389 /* #define FT_DEBUG_LEVEL_TRACE */
 390
 391
 392   /*************************************************************************/
 393   /*                                                                       */
 394   /* Autofitter debugging                                                  */
 395   /*                                                                       */
 396   /*   If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to     */
 397   /*   control the autofitter behaviour for debugging purposes with global */
 398   /*   boolean variables (consequently, you should *never* enable this     */
 399   /*   while compiling in `release' mode):                                 */
 400   /*                                                                       */
 401   /*     _af_debug_disable_horz_hints                                      */
 402   /*     _af_debug_disable_vert_hints                                      */
 403   /*     _af_debug_disable_blue_hints                                      */
 404   /*                                                                       */
 405   /*   Additionally, the following functions provide dumps of various      */
 406   /*   internal autofit structures to stdout (using `printf'):             */
 407   /*                                                                       */
 408   /*     af_glyph_hints_dump_points                                        */
 409   /*     af_glyph_hints_dump_segments                                      */
 410   /*     af_glyph_hints_dump_edges                                         */
 411   /*                                                                       */
 412   /*   As an argument, they use another global variable:                   */
 413   /*                                                                       */
 414   /*     _af_debug_hints                                                   */
 415   /*                                                                       */
 416   /*   Please have a look at the `ftgrid' demo program to see how those    */
 417   /*   variables and macros should be used.                                */
 418   /*                                                                       */
 419   /*   Do not #undef these macros here since the build system might define */
 420   /*   them for certain configurations only.                               */
 421   /*                                                                       */
 422 /* #define FT_DEBUG_AUTOFIT */
 423
 424
 425   /*************************************************************************/
 426   /*                                                                       */
 427   /* Memory Debugging                                                      */
 428   /*                                                                       */
 429   /*   FreeType now comes with an integrated memory debugger that is       */
 430   /*   capable of detecting simple errors like memory leaks or double      */
 431   /*   deletes.  To compile it within your build of the library, you       */
 432   /*   should define FT_DEBUG_MEMORY here.                                 */
 433   /*                                                                       */
 434   /*   Note that the memory debugger is only activated at runtime when     */
 435   /*   when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */
 436   /*                                                                       */
 437   /*   Do not #undef this macro here since the build system might define   */
 438   /*   it for certain configurations only.                                 */
 439   /*                                                                       */
 440 /* #define FT_DEBUG_MEMORY */
 441
 442
 443   /*************************************************************************/
 444   /*                                                                       */
 445   /* Module errors                                                         */
 446   /*                                                                       */
 447   /*   If this macro is set (which is _not_ the default), the higher byte  */
 448   /*   of an error code gives the module in which the error has occurred,  */
 449   /*   while the lower byte is the real error code.                        */
 450   /*                                                                       */
 451   /*   Setting this macro makes sense for debugging purposes only, since   */
 452   /*   it would break source compatibility of certain programs that use    */
 453   /*   FreeType 2.                                                         */
 454   /*                                                                       */
 455   /*   More details can be found in the files ftmoderr.h and fterrors.h.   */
 456   /*                                                                       */
 457 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS
 458
 459
 460   /*************************************************************************/
 461   /*                                                                       */
 462   /* Position Independent Code                                             */
 463   /*                                                                       */
 464   /*   If this macro is set (which is _not_ the default), FreeType2 will   */
 465   /*   avoid creating constants that require address fixups.  Instead the  */
 466   /*   constants will be moved into a struct and additional intialization  */
 467   /*   code will be used.                                                  */
 468   /*                                                                       */
 469   /*   Setting this macro is needed for systems that prohibit address      */
 470   /*   fixups, such as BREW.                                               */
 471   /*                                                                       */
 472 /* #define FT_CONFIG_OPTION_PIC */
 473
 474
 475   /*************************************************************************/
 476   /*************************************************************************/
 477   /****                                                                 ****/
 478   /****        S F N T   D R I V E R    C O N F I G U R A T I O N       ****/
 479   /****                                                                 ****/
 480   /*************************************************************************/
 481   /*************************************************************************/
 482
 483
 484   /*************************************************************************/
 485   /*                                                                       */
 486   /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support       */
 487   /* embedded bitmaps in all formats using the SFNT module (namely         */
 488   /* TrueType & OpenType).                                                 */
 489   /*                                                                       */
 490 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS
 491
 492
 493   /*************************************************************************/
 494   /*                                                                       */
 495   /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to    */
 496   /* load and enumerate the glyph Postscript names in a TrueType or        */
 497   /* OpenType file.                                                        */
 498   /*                                                                       */
 499   /* Note that when you do not compile the `PSNames' module by undefining  */
 500   /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will   */
 501   /* contain additional code used to read the PS Names table from a font.  */
 502   /*                                                                       */
 503   /* (By default, the module uses `PSNames' to extract glyph names.)       */
 504   /*                                                                       */
 505 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES
 506
 507
 508   /*************************************************************************/
 509   /*                                                                       */
 510   /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to       */
 511   /* access the internal name table in a SFNT-based format like TrueType   */
 512   /* or OpenType.  The name table contains various strings used to         */
 513   /* describe the font, like family name, copyright, version, etc.  It     */
 514   /* does not contain any glyph name though.                               */
 515   /*                                                                       */
 516   /* Accessing SFNT names is done through the functions declared in        */
 517   /* `freetype/ftsnames.h'.                                                */
 518   /*                                                                       */
 519 #define TT_CONFIG_OPTION_SFNT_NAMES
 520
 521
 522   /*************************************************************************/
 523   /*                                                                       */
 524   /* TrueType CMap support                                                 */
 525   /*                                                                       */
 526   /*   Here you can fine-tune which TrueType CMap table format shall be    */
 527   /*   supported.                                                          */
 528 #define TT_CONFIG_CMAP_FORMAT_0
 529 #define TT_CONFIG_CMAP_FORMAT_2
 530 #define TT_CONFIG_CMAP_FORMAT_4
 531 #define TT_CONFIG_CMAP_FORMAT_6
 532 #define TT_CONFIG_CMAP_FORMAT_8
 533 #define TT_CONFIG_CMAP_FORMAT_10
 534 #define TT_CONFIG_CMAP_FORMAT_12
 535 #define TT_CONFIG_CMAP_FORMAT_13
 536 #define TT_CONFIG_CMAP_FORMAT_14
 537
 538
 539   /*************************************************************************/
 540   /*************************************************************************/
 541   /****                                                                 ****/
 542   /****    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   ****/
 543   /****                                                                 ****/
 544   /*************************************************************************/
 545   /*************************************************************************/
 546
 547   /*************************************************************************/
 548   /*                                                                       */
 549   /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile   */
 550   /* a bytecode interpreter in the TrueType driver.                        */
 551   /*                                                                       */
 552   /* By undefining this, you will only compile the code necessary to load  */
 553   /* TrueType glyphs without hinting.                                      */
 554   /*                                                                       */
 555   /*   Do not #undef this macro here, since the build system might         */
 556   /*   define it for certain configurations only.                          */
 557   /*                                                                       */
 558 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
 559
 560
 561   /*************************************************************************/
 562   /*                                                                       */
 563   /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version  */
 564   /* of the TrueType bytecode interpreter is used that doesn't implement   */
 565   /* any of the patented opcodes and algorithms.  The patents related to   */
 566   /* TrueType hinting have expired worldwide since May 2010; this option   */
 567   /* is now deprecated.                                                    */
 568   /*                                                                       */
 569   /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored*  */
 570   /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words,  */
 571   /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or                */
 572   /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time.    */
 573   /*                                                                       */
 574   /* This macro is only useful for a small number of font files (mostly    */
 575   /* for Asian scripts) that require bytecode interpretation to properly   */
 576   /* load glyphs.  For all other fonts, this produces unpleasant results,  */
 577   /* thus the unpatented interpreter is never used to load glyphs from     */
 578   /* TrueType fonts unless one of the following two options is used.       */
 579   /*                                                                       */
 580   /*   - The unpatented interpreter is explicitly activated by the user    */
 581   /*     through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag         */
 582   /*     when opening the FT_Face.                                         */
 583   /*                                                                       */
 584   /*   - FreeType detects that the FT_Face corresponds to one of the       */
 585   /*     `trick' fonts (e.g., `Mingliu') it knows about.  The font engine  */
 586   /*     contains a hard-coded list of font names and other matching       */
 587   /*     parameters (see function `tt_face_init' in file                   */
 588   /*     `src/truetype/ttobjs.c').                                         */
 589   /*                                                                       */
 590   /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */
 591   /*                                                                       */
 592   /*   {                                                                   */
 593   /*     FT_Parameter  parameter;                                          */
 594   /*     FT_Open_Args  open_args;                                          */
 595   /*                                                                       */
 596   /*                                                                       */
 597   /*     parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING;                  */
 598   /*                                                                       */
 599   /*     open_args.flags      = FT_OPEN_PATHNAME | FT_OPEN_PARAMS;         */
 600   /*     open_args.pathname   = my_font_pathname;                          */
 601   /*     open_args.num_params = 1;                                         */
 602   /*     open_args.params     = &parameter;                                */
 603   /*                                                                       */
 604   /*     error = FT_Open_Face( library, &open_args, index, &face );        */
 605   /*     ...                                                               */
 606   /*   }                                                                   */
 607   /*                                                                       */
 608 /* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */
 609
 610
 611   /*************************************************************************/
 612   /*                                                                       */
 613   /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType    */
 614   /* bytecode interpreter with a huge switch statement, rather than a call */
 615   /* table.  This results in smaller and faster code for a number of       */
 616   /* architectures.                                                        */
 617   /*                                                                       */
 618   /* Note however that on some compiler/processor combinations, undefining */
 619   /* this macro will generate faster, though larger, code.                 */
 620   /*                                                                       */
 621 #define TT_CONFIG_OPTION_INTERPRETER_SWITCH
 622
 623
 624   /*************************************************************************/
 625   /*                                                                       */
 626   /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the        */
 627   /* TrueType glyph loader to use Apple's definition of how to handle      */
 628   /* component offsets in composite glyphs.                                */
 629   /*                                                                       */
 630   /* Apple and MS disagree on the default behavior of component offsets    */
 631   /* in composites.  Apple says that they should be scaled by the scaling  */
 632   /* factors in the transformation matrix (roughly, it's more complex)     */
 633   /* while MS says they should not.  OpenType defines two bits in the      */
 634   /* composite flags array which can be used to disambiguate, but old      */
 635   /* fonts will not have them.                                             */
 636   /*                                                                       */
 637   /*   http://www.microsoft.com/typography/otspec/glyf.htm                 */
 638   /*   http://fonts.apple.com/TTRefMan/RM06/Chap6glyf.html                 */
 639   /*                                                                       */
 640 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED
 641
 642
 643   /*************************************************************************/
 644   /*                                                                       */
 645   /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include         */
 646   /* support for Apple's distortable font technology (fvar, gvar, cvar,    */
 647   /* and avar tables).  This has many similarities to Type 1 Multiple      */
 648   /* Masters support.                                                      */
 649   /*                                                                       */
 650 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT
 651
 652
 653   /*************************************************************************/
 654   /*                                                                       */
 655   /* Define TT_CONFIG_OPTION_BDF if you want to include support for        */
 656   /* an embedded `BDF ' table within SFNT-based bitmap formats.            */
 657   /*                                                                       */
 658 #define TT_CONFIG_OPTION_BDF
 659
 660
 661   /*************************************************************************/
 662   /*************************************************************************/
 663   /****                                                                 ****/
 664   /****      T Y P E 1   D R I V E R    C O N F I G U R A T I O N       ****/
 665   /****                                                                 ****/
 666   /*************************************************************************/
 667   /*************************************************************************/
 668
 669
 670   /*************************************************************************/
 671   /*                                                                       */
 672   /* T1_MAX_DICT_DEPTH is the maximal depth of nest dictionaries and       */
 673   /* arrays in the Type 1 stream (see t1load.c).  A minimum of 4 is        */
 674   /* required.                                                             */
 675   /*                                                                       */
 676 #define T1_MAX_DICT_DEPTH  5
 677
 678
 679   /*************************************************************************/
 680   /*                                                                       */
 681   /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine   */
 682   /* calls during glyph loading.                                           */
 683   /*                                                                       */
 684 #define T1_MAX_SUBRS_CALLS  16
 685
 686
 687   /*************************************************************************/
 688   /*                                                                       */
 689   /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity.  A     */
 690   /* minimum of 16 is required.                                            */
 691   /*                                                                       */
 692   /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */
 693   /*                                                                       */
 694 #define T1_MAX_CHARSTRINGS_OPERANDS  256
 695
 696
 697   /*************************************************************************/
 698   /*                                                                       */
 699   /* Define this configuration macro if you want to prevent the            */
 700   /* compilation of `t1afm', which is in charge of reading Type 1 AFM      */
 701   /* files into an existing face.  Note that if set, the T1 driver will be */
 702   /* unable to produce kerning distances.                                  */
 703   /*                                                                       */
 704 #undef T1_CONFIG_OPTION_NO_AFM
 705
 706
 707   /*************************************************************************/
 708   /*                                                                       */
 709   /* Define this configuration macro if you want to prevent the            */
 710   /* compilation of the Multiple Masters font support in the Type 1        */
 711   /* driver.                                                               */
 712   /*                                                                       */
 713 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT
 714
 715
 716   /*************************************************************************/
 717   /*************************************************************************/
 718   /****                                                                 ****/
 719   /****    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     ****/
 720   /****                                                                 ****/
 721   /*************************************************************************/
 722   /*************************************************************************/
 723
 724
 725   /*************************************************************************/
 726   /*                                                                       */
 727   /* Compile autofit module with CJK (Chinese, Japanese, Korean) script    */
 728   /* support.                                                              */
 729   /*                                                                       */
 730 #define AF_CONFIG_OPTION_CJK
 731
 732   /*************************************************************************/
 733   /*                                                                       */
 734   /* Compile autofit module with Indic script support.                     */
 735   /*                                                                       */
 736 #define AF_CONFIG_OPTION_INDIC
 737
 738   /*************************************************************************/
 739   /*                                                                       */
 740   /* Compile autofit module with warp hinting.  The idea of the warping    */
 741   /* code is to slightly scale and shift a glyph within a single dimension */
 742   /* so that as much of its segments are aligned (more or less) on the     */
 743   /* grid.  To find out the optimal scaling and shifting value, various    */
 744   /* parameter combinations are tried and scored.                          */
 745   /*                                                                       */
 746   /* This experimental option is only active if the render mode is         */
 747   /* FT_RENDER_MODE_LIGHT.                                                 */
 748   /*                                                                       */
 749 /* #define AF_CONFIG_OPTION_USE_WARPER */
 750
 751   /* */
 752
 753
 754   /*
 755    * Define this variable if you want to keep the layout of internal
 756    * structures that was used prior to FreeType 2.2.  This also compiles in
 757    * a few obsolete functions to avoid linking problems on typical Unix
 758    * distributions.
 759    *
 760    * For embedded systems or building a new distribution from scratch, it
 761    * is recommended to disable the macro since it reduces the library's code
 762    * size and activates a few memory-saving optimizations as well.
 763    */
 764 #define FT_CONFIG_OPTION_OLD_INTERNALS
 765
 766
 767   /*
 768    *  To detect legacy cache-lookup call from a rogue client (<= 2.1.7),
 769    *  we restrict the number of charmaps in a font.  The current API of
 770    *  FTC_CMapCache_Lookup() takes cmap_index & charcode, but old API
 771    *  takes charcode only.  To determine the passed value is for cmap_index
 772    *  or charcode, the possible cmap_index is restricted not to exceed
 773    *  the minimum possible charcode by a rogue client.  It is also very
 774    *  unlikely that a rogue client is interested in Unicode values 0 to 15.
 775    *
 776    *  NOTE: The original threshold was 4 deduced from popular number of
 777    *        cmap subtables in UCS-4 TrueType fonts, but now it is not
 778    *        irregular for OpenType fonts to have more than 4 subtables,
 779    *        because variation selector subtables are available for Apple
 780    *        and Microsoft platforms.
 781    */
 782
 783 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
 784 #define FT_MAX_CHARMAP_CACHEABLE 15
 785 #endif
 786
 787
 788   /*
 789    * This macro is defined if either unpatented or native TrueType
 790    * hinting is requested by the definitions above.
 791    */
 792 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
 793 #define  TT_USE_BYTECODE_INTERPRETER
 794 #undef   TT_CONFIG_OPTION_UNPATENTED_HINTING
 795 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING
 796 #define  TT_USE_BYTECODE_INTERPRETER
 797 #endif
 798
 799 FT_END_HEADER
 800
 801
 802 #endif /* __FTOPTION_H__ */
 803
 804
 805 /* END */