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

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  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
 26FT_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   *    …

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