Set the freetype options missing in the recent update.
[pdfium.git] / third_party / freetype / include / config / ftoption.h
1 /***************************************************************************/
2 /*                                                                         */
3 /*  ftoption.h                                                             */
4 /*                                                                         */
5 /*    User-selectable configuration macros (specification only).           */
6 /*                                                                         */
7 /*  Copyright 1996-2014 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 `$BUILD/config/ftoption.h', where `$BUILD' is the     */
42   /*    name of a directory that is included _before_ the FreeType include */
43   /*    path during compilation.                                           */
44   /*                                                                       */
45   /*    The default FreeType Makefiles and Jamfiles use the build          */
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 `$BUILD/ft2build.h' and modify it    */
50   /*    slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to       */
51   /*    locate this file during the build.  For example,                   */
52   /*                                                                       */
53   /*      #define FT_CONFIG_OPTIONS_H  <myftoptions.h>                     */
54   /*      #include <config/ftheader.h>                                     */
55   /*                                                                       */
56   /*    will use `$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 <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   /* PNG bitmap support.                                                   */
220   /*                                                                       */
221   /*   FreeType now handles loading color bitmap glyphs in the PNG format. */
222   /*   This requires help from the external libpng library.  Uncompressed  */
223   /*   color bitmaps do not need any external libraries and will be        */
224   /*   supported regardless of this configuration.                         */
225   /*                                                                       */
226   /*   Define this macro if you want to enable this `feature'.             */
227   /*                                                                       */
228 /* #define FT_CONFIG_OPTION_USE_PNG */
229
230
231   /*************************************************************************/
232   /*                                                                       */
233   /* HarfBuzz support.                                                     */
234   /*                                                                       */
235   /*   FreeType uses the HarfBuzz library to improve auto-hinting of       */
236   /*   OpenType fonts.  If available, many glyphs not directly addressable */
237   /*   by a font's character map will be hinted also.                      */
238   /*                                                                       */
239   /*   Define this macro if you want to enable this `feature'.             */
240   /*                                                                       */
241 /* #define FT_CONFIG_OPTION_USE_HARFBUZZ */
242
243
244   /*************************************************************************/
245   /*                                                                       */
246   /* DLL export compilation                                                */
247   /*                                                                       */
248   /*   When compiling FreeType as a DLL, some systems/compilers need a     */
249   /*   special keyword in front OR after the return type of function       */
250   /*   declarations.                                                       */
251   /*                                                                       */
252   /*   Two macros are used within the FreeType source code to define       */
253   /*   exported library functions: FT_EXPORT and FT_EXPORT_DEF.            */
254   /*                                                                       */
255   /*     FT_EXPORT( return_type )                                          */
256   /*                                                                       */
257   /*       is used in a function declaration, as in                        */
258   /*                                                                       */
259   /*         FT_EXPORT( FT_Error )                                         */
260   /*         FT_Init_FreeType( FT_Library*  alibrary );                    */
261   /*                                                                       */
262   /*                                                                       */
263   /*     FT_EXPORT_DEF( return_type )                                      */
264   /*                                                                       */
265   /*       is used in a function definition, as in                         */
266   /*                                                                       */
267   /*         FT_EXPORT_DEF( FT_Error )                                     */
268   /*         FT_Init_FreeType( FT_Library*  alibrary )                     */
269   /*         {                                                             */
270   /*           ... some code ...                                           */
271   /*           return FT_Err_Ok;                                           */
272   /*         }                                                             */
273   /*                                                                       */
274   /*   You can provide your own implementation of FT_EXPORT and            */
275   /*   FT_EXPORT_DEF here if you want.  If you leave them undefined, they  */
276   /*   will be later automatically defined as `extern return_type' to      */
277   /*   allow normal compilation.                                           */
278   /*                                                                       */
279   /*   Do not #undef these macros here since the build system might define */
280   /*   them for certain configurations only.                               */
281   /*                                                                       */
282 /* #define FT_EXPORT(x)      extern x */
283 /* #define FT_EXPORT_DEF(x)  x */
284
285
286   /*************************************************************************/
287   /*                                                                       */
288   /* Glyph Postscript Names handling                                       */
289   /*                                                                       */
290   /*   By default, FreeType 2 is compiled with the `psnames' module.  This */
291   /*   module is in charge of converting a glyph name string into a        */
292   /*   Unicode value, or return a Macintosh standard glyph name for the    */
293   /*   use with the TrueType `post' table.                                 */
294   /*                                                                       */
295   /*   Undefine this macro if you do not want `psnames' compiled in your   */
296   /*   build of FreeType.  This has the following effects:                 */
297   /*                                                                       */
298   /*   - The TrueType driver will provide its own set of glyph names,      */
299   /*     if you build it to support postscript names in the TrueType       */
300   /*     `post' table.                                                     */
301   /*                                                                       */
302   /*   - The Type 1 driver will not be able to synthesize a Unicode        */
303   /*     charmap out of the glyphs found in the fonts.                     */
304   /*                                                                       */
305   /*   You would normally undefine this configuration macro when building  */
306   /*   a version of FreeType that doesn't contain a Type 1 or CFF driver.  */
307   /*                                                                       */
308 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES
309
310
311   /*************************************************************************/
312   /*                                                                       */
313   /* Postscript Names to Unicode Values support                            */
314   /*                                                                       */
315   /*   By default, FreeType 2 is built with the `PSNames' module compiled  */
316   /*   in.  Among other things, the module is used to convert a glyph name */
317   /*   into a Unicode value.  This is especially useful in order to        */
318   /*   synthesize on the fly a Unicode charmap from the CFF/Type 1 driver  */
319   /*   through a big table named the `Adobe Glyph List' (AGL).             */
320   /*                                                                       */
321   /*   Undefine this macro if you do not want the Adobe Glyph List         */
322   /*   compiled in your `PSNames' module.  The Type 1 driver will not be   */
323   /*   able to synthesize a Unicode charmap out of the glyphs found in the */
324   /*   fonts.                                                              */
325   /*                                                                       */
326 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST
327
328
329   /*************************************************************************/
330   /*                                                                       */
331   /* Support for Mac fonts                                                 */
332   /*                                                                       */
333   /*   Define this macro if you want support for outline fonts in Mac      */
334   /*   format (mac dfont, mac resource, macbinary containing a mac         */
335   /*   resource) on non-Mac platforms.                                     */
336   /*                                                                       */
337   /*   Note that the `FOND' resource isn't checked.                        */
338   /*                                                                       */
339 #undef FT_CONFIG_OPTION_MAC_FONTS
340
341
342   /*************************************************************************/
343   /*                                                                       */
344   /* Guessing methods to access embedded resource forks                    */
345   /*                                                                       */
346   /*   Enable extra Mac fonts support on non-Mac platforms (e.g.           */
347   /*   GNU/Linux).                                                         */
348   /*                                                                       */
349   /*   Resource forks which include fonts data are stored sometimes in     */
350   /*   locations which users or developers don't expected.  In some cases, */
351   /*   resource forks start with some offset from the head of a file.  In  */
352   /*   other cases, the actual resource fork is stored in file different   */
353   /*   from what the user specifies.  If this option is activated,         */
354   /*   FreeType tries to guess whether such offsets or different file      */
355   /*   names must be used.                                                 */
356   /*                                                                       */
357   /*   Note that normal, direct access of resource forks is controlled via */
358   /*   the FT_CONFIG_OPTION_MAC_FONTS option.                              */
359   /*                                                                       */
360 #ifdef FT_CONFIG_OPTION_MAC_FONTS
361 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK
362 #endif
363
364
365   /*************************************************************************/
366   /*                                                                       */
367   /* Allow the use of FT_Incremental_Interface to load typefaces that      */
368   /* contain no glyph data, but supply it via a callback function.         */
369   /* This is required by clients supporting document formats which         */
370   /* supply font data incrementally as the document is parsed, such        */
371   /* as the Ghostscript interpreter for the PostScript language.           */
372   /*                                                                       */
373 #define FT_CONFIG_OPTION_INCREMENTAL
374
375
376   /*************************************************************************/
377   /*                                                                       */
378   /* The size in bytes of the render pool used by the scan-line converter  */
379   /* to do all of its work.                                                */
380   /*                                                                       */
381   /* This must be greater than 4KByte if you use FreeType to rasterize     */
382   /* glyphs; otherwise, you may set it to zero to avoid unnecessary        */
383   /* allocation of the render pool.                                        */
384   /*                                                                       */
385 #define FT_RENDER_POOL_SIZE  16384L
386
387
388   /*************************************************************************/
389   /*                                                                       */
390   /* FT_MAX_MODULES                                                        */
391   /*                                                                       */
392   /*   The maximum number of modules that can be registered in a single    */
393   /*   FreeType library object.  32 is the default.                        */
394   /*                                                                       */
395 #define FT_MAX_MODULES  32
396
397
398   /*************************************************************************/
399   /*                                                                       */
400   /* Debug level                                                           */
401   /*                                                                       */
402   /*   FreeType can be compiled in debug or trace mode.  In debug mode,    */
403   /*   errors are reported through the `ftdebug' component.  In trace      */
404   /*   mode, additional messages are sent to the standard output during    */
405   /*   execution.                                                          */
406   /*                                                                       */
407   /*   Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode.     */
408   /*   Define FT_DEBUG_LEVEL_TRACE to build it in trace mode.              */
409   /*                                                                       */
410   /*   Don't define any of these macros to compile in `release' mode!      */
411   /*                                                                       */
412   /*   Do not #undef these macros here since the build system might define */
413   /*   them for certain configurations only.                               */
414   /*                                                                       */
415 /* #define FT_DEBUG_LEVEL_ERROR */
416 /* #define FT_DEBUG_LEVEL_TRACE */
417
418
419   /*************************************************************************/
420   /*                                                                       */
421   /* Autofitter debugging                                                  */
422   /*                                                                       */
423   /*   If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to     */
424   /*   control the autofitter behaviour for debugging purposes with global */
425   /*   boolean variables (consequently, you should *never* enable this     */
426   /*   while compiling in `release' mode):                                 */
427   /*                                                                       */
428   /*     _af_debug_disable_horz_hints                                      */
429   /*     _af_debug_disable_vert_hints                                      */
430   /*     _af_debug_disable_blue_hints                                      */
431   /*                                                                       */
432   /*   Additionally, the following functions provide dumps of various      */
433   /*   internal autofit structures to stdout (using `printf'):             */
434   /*                                                                       */
435   /*     af_glyph_hints_dump_points                                        */
436   /*     af_glyph_hints_dump_segments                                      */
437   /*     af_glyph_hints_dump_edges                                         */
438   /*                                                                       */
439   /*   As an argument, they use another global variable:                   */
440   /*                                                                       */
441   /*     _af_debug_hints                                                   */
442   /*                                                                       */
443   /*   Please have a look at the `ftgrid' demo program to see how those    */
444   /*   variables and macros should be used.                                */
445   /*                                                                       */
446   /*   Do not #undef these macros here since the build system might define */
447   /*   them for certain configurations only.                               */
448   /*                                                                       */
449 /* #define FT_DEBUG_AUTOFIT */
450
451
452   /*************************************************************************/
453   /*                                                                       */
454   /* Memory Debugging                                                      */
455   /*                                                                       */
456   /*   FreeType now comes with an integrated memory debugger that is       */
457   /*   capable of detecting simple errors like memory leaks or double      */
458   /*   deletes.  To compile it within your build of the library, you       */
459   /*   should define FT_DEBUG_MEMORY here.                                 */
460   /*                                                                       */
461   /*   Note that the memory debugger is only activated at runtime when     */
462   /*   when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */
463   /*                                                                       */
464   /*   Do not #undef this macro here since the build system might define   */
465   /*   it for certain configurations only.                                 */
466   /*                                                                       */
467 /* #define FT_DEBUG_MEMORY */
468
469
470   /*************************************************************************/
471   /*                                                                       */
472   /* Module errors                                                         */
473   /*                                                                       */
474   /*   If this macro is set (which is _not_ the default), the higher byte  */
475   /*   of an error code gives the module in which the error has occurred,  */
476   /*   while the lower byte is the real error code.                        */
477   /*                                                                       */
478   /*   Setting this macro makes sense for debugging purposes only, since   */
479   /*   it would break source compatibility of certain programs that use    */
480   /*   FreeType 2.                                                         */
481   /*                                                                       */
482   /*   More details can be found in the files ftmoderr.h and fterrors.h.   */
483   /*                                                                       */
484 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS
485
486
487   /*************************************************************************/
488   /*                                                                       */
489   /* Position Independent Code                                             */
490   /*                                                                       */
491   /*   If this macro is set (which is _not_ the default), FreeType2 will   */
492   /*   avoid creating constants that require address fixups.  Instead the  */
493   /*   constants will be moved into a struct and additional intialization  */
494   /*   code will be used.                                                  */
495   /*                                                                       */
496   /*   Setting this macro is needed for systems that prohibit address      */
497   /*   fixups, such as BREW.                                               */
498   /*                                                                       */
499 /* #define FT_CONFIG_OPTION_PIC */
500
501
502   /*************************************************************************/
503   /*************************************************************************/
504   /****                                                                 ****/
505   /****        S F N T   D R I V E R    C O N F I G U R A T I O N       ****/
506   /****                                                                 ****/
507   /*************************************************************************/
508   /*************************************************************************/
509
510
511   /*************************************************************************/
512   /*                                                                       */
513   /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support       */
514   /* embedded bitmaps in all formats using the SFNT module (namely         */
515   /* TrueType & OpenType).                                                 */
516   /*                                                                       */
517 #undef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
518
519
520   /*************************************************************************/
521   /*                                                                       */
522   /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to    */
523   /* load and enumerate the glyph Postscript names in a TrueType or        */
524   /* OpenType file.                                                        */
525   /*                                                                       */
526   /* Note that when you do not compile the `PSNames' module by undefining  */
527   /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will   */
528   /* contain additional code used to read the PS Names table from a font.  */
529   /*                                                                       */
530   /* (By default, the module uses `PSNames' to extract glyph names.)       */
531   /*                                                                       */
532 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES
533
534
535   /*************************************************************************/
536   /*                                                                       */
537   /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to       */
538   /* access the internal name table in a SFNT-based format like TrueType   */
539   /* or OpenType.  The name table contains various strings used to         */
540   /* describe the font, like family name, copyright, version, etc.  It     */
541   /* does not contain any glyph name though.                               */
542   /*                                                                       */
543   /* Accessing SFNT names is done through the functions declared in        */
544   /* `ftsnames.h'.                                                         */
545   /*                                                                       */
546 #define TT_CONFIG_OPTION_SFNT_NAMES
547
548
549   /*************************************************************************/
550   /*                                                                       */
551   /* TrueType CMap support                                                 */
552   /*                                                                       */
553   /*   Here you can fine-tune which TrueType CMap table format shall be    */
554   /*   supported.                                                          */
555 #define TT_CONFIG_CMAP_FORMAT_0
556 #define TT_CONFIG_CMAP_FORMAT_2
557 #define TT_CONFIG_CMAP_FORMAT_4
558 #define TT_CONFIG_CMAP_FORMAT_6
559 #define TT_CONFIG_CMAP_FORMAT_8
560 #define TT_CONFIG_CMAP_FORMAT_10
561 #define TT_CONFIG_CMAP_FORMAT_12
562 #define TT_CONFIG_CMAP_FORMAT_13
563 #define TT_CONFIG_CMAP_FORMAT_14
564
565
566   /*************************************************************************/
567   /*************************************************************************/
568   /****                                                                 ****/
569   /****    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   ****/
570   /****                                                                 ****/
571   /*************************************************************************/
572   /*************************************************************************/
573
574   /*************************************************************************/
575   /*                                                                       */
576   /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile   */
577   /* a bytecode interpreter in the TrueType driver.                        */
578   /*                                                                       */
579   /* By undefining this, you will only compile the code necessary to load  */
580   /* TrueType glyphs without hinting.                                      */
581   /*                                                                       */
582   /*   Do not #undef this macro here, since the build system might         */
583   /*   define it for certain configurations only.                          */
584   /*                                                                       */
585 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
586
587
588   /*************************************************************************/
589   /*                                                                       */
590   /* Define TT_CONFIG_OPTION_SUBPIXEL_HINTING if you want to compile       */
591   /* EXPERIMENTAL subpixel hinting support into the TrueType driver.  This */
592   /* replaces the native TrueType hinting mechanism when anything but      */
593   /* FT_RENDER_MODE_MONO is requested.                                     */
594   /*                                                                       */
595   /* Enabling this causes the TrueType driver to ignore instructions under */
596   /* certain conditions.  This is done in accordance with the guide here,  */
597   /* with some minor differences:                                          */
598   /*                                                                       */
599   /*  http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx */
600   /*                                                                       */
601   /* By undefining this, you only compile the code necessary to hint       */
602   /* TrueType glyphs with native TT hinting.                               */
603   /*                                                                       */
604   /*   This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be    */
605   /*   defined.                                                            */
606   /*                                                                       */
607 /* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING */
608
609
610   /*************************************************************************/
611   /*                                                                       */
612   /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version  */
613   /* of the TrueType bytecode interpreter is used that doesn't implement   */
614   /* any of the patented opcodes and algorithms.  The patents related to   */
615   /* TrueType hinting have expired worldwide since May 2010; this option   */
616   /* is now deprecated.                                                    */
617   /*                                                                       */
618   /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored*  */
619   /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words,  */
620   /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or                */
621   /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time.    */
622   /*                                                                       */
623   /* This macro is only useful for a small number of font files (mostly    */
624   /* for Asian scripts) that require bytecode interpretation to properly   */
625   /* load glyphs.  For all other fonts, this produces unpleasant results,  */
626   /* thus the unpatented interpreter is never used to load glyphs from     */
627   /* TrueType fonts unless one of the following two options is used.       */
628   /*                                                                       */
629   /*   - The unpatented interpreter is explicitly activated by the user    */
630   /*     through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag         */
631   /*     when opening the FT_Face.                                         */
632   /*                                                                       */
633   /*   - FreeType detects that the FT_Face corresponds to one of the       */
634   /*     `trick' fonts (e.g., `Mingliu') it knows about.  The font engine  */
635   /*     contains a hard-coded list of font names and other matching       */
636   /*     parameters (see function `tt_face_init' in file                   */
637   /*     `src/truetype/ttobjs.c').                                         */
638   /*                                                                       */
639   /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */
640   /*                                                                       */
641   /*   {                                                                   */
642   /*     FT_Parameter  parameter;                                          */
643   /*     FT_Open_Args  open_args;                                          */
644   /*                                                                       */
645   /*                                                                       */
646   /*     parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING;                  */
647   /*                                                                       */
648   /*     open_args.flags      = FT_OPEN_PATHNAME | FT_OPEN_PARAMS;         */
649   /*     open_args.pathname   = my_font_pathname;                          */
650   /*     open_args.num_params = 1;                                         */
651   /*     open_args.params     = &parameter;                                */
652   /*                                                                       */
653   /*     error = FT_Open_Face( library, &open_args, index, &face );        */
654   /*     ...                                                               */
655   /*   }                                                                   */
656   /*                                                                       */
657 /* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */
658
659
660   /*************************************************************************/
661   /*                                                                       */
662   /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType    */
663   /* bytecode interpreter with a huge switch statement, rather than a call */
664   /* table.  This results in smaller and faster code for a number of       */
665   /* architectures.                                                        */
666   /*                                                                       */
667   /* Note however that on some compiler/processor combinations, undefining */
668   /* this macro will generate faster, though larger, code.                 */
669   /*                                                                       */
670 #define TT_CONFIG_OPTION_INTERPRETER_SWITCH
671
672
673   /*************************************************************************/
674   /*                                                                       */
675   /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the        */
676   /* TrueType glyph loader to use Apple's definition of how to handle      */
677   /* component offsets in composite glyphs.                                */
678   /*                                                                       */
679   /* Apple and MS disagree on the default behavior of component offsets    */
680   /* in composites.  Apple says that they should be scaled by the scaling  */
681   /* factors in the transformation matrix (roughly, it's more complex)     */
682   /* while MS says they should not.  OpenType defines two bits in the      */
683   /* composite flags array which can be used to disambiguate, but old      */
684   /* fonts will not have them.                                             */
685   /*                                                                       */
686   /*   http://www.microsoft.com/typography/otspec/glyf.htm                 */
687   /*   http://fonts.apple.com/TTRefMan/RM06/Chap6glyf.html                 */
688   /*                                                                       */
689 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED
690
691
692   /*************************************************************************/
693   /*                                                                       */
694   /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include         */
695   /* support for Apple's distortable font technology (fvar, gvar, cvar,    */
696   /* and avar tables).  This has many similarities to Type 1 Multiple      */
697   /* Masters support.                                                      */
698   /*                                                                       */
699 #undef TT_CONFIG_OPTION_GX_VAR_SUPPORT
700
701
702   /*************************************************************************/
703   /*                                                                       */
704   /* Define TT_CONFIG_OPTION_BDF if you want to include support for        */
705   /* an embedded `BDF ' table within SFNT-based bitmap formats.            */
706   /*                                                                       */
707 #undef TT_CONFIG_OPTION_BDF
708
709
710   /*************************************************************************/
711   /*************************************************************************/
712   /****                                                                 ****/
713   /****      T Y P E 1   D R I V E R    C O N F I G U R A T I O N       ****/
714   /****                                                                 ****/
715   /*************************************************************************/
716   /*************************************************************************/
717
718
719   /*************************************************************************/
720   /*                                                                       */
721   /* T1_MAX_DICT_DEPTH is the maximum depth of nest dictionaries and       */
722   /* arrays in the Type 1 stream (see t1load.c).  A minimum of 4 is        */
723   /* required.                                                             */
724   /*                                                                       */
725 #define T1_MAX_DICT_DEPTH  5
726
727
728   /*************************************************************************/
729   /*                                                                       */
730   /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine   */
731   /* calls during glyph loading.                                           */
732   /*                                                                       */
733 #define T1_MAX_SUBRS_CALLS  16
734
735
736   /*************************************************************************/
737   /*                                                                       */
738   /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity.  A     */
739   /* minimum of 16 is required.                                            */
740   /*                                                                       */
741   /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */
742   /*                                                                       */
743 #define T1_MAX_CHARSTRINGS_OPERANDS  512
744
745
746   /*************************************************************************/
747   /*                                                                       */
748   /* Define this configuration macro if you want to prevent the            */
749   /* compilation of `t1afm', which is in charge of reading Type 1 AFM      */
750   /* files into an existing face.  Note that if set, the T1 driver will be */
751   /* unable to produce kerning distances.                                  */
752   /*                                                                       */
753 #undef T1_CONFIG_OPTION_NO_AFM
754
755
756   /*************************************************************************/
757   /*                                                                       */
758   /* Define this configuration macro if you want to prevent the            */
759   /* compilation of the Multiple Masters font support in the Type 1        */
760   /* driver.                                                               */
761   /*                                                                       */
762 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT
763
764
765   /*************************************************************************/
766   /*************************************************************************/
767   /****                                                                 ****/
768   /****         C F F   D R I V E R    C O N F I G U R A T I O N        ****/
769   /****                                                                 ****/
770   /*************************************************************************/
771   /*************************************************************************/
772
773
774   /*************************************************************************/
775   /*                                                                       */
776   /* Using CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4} it is      */
777   /* possible to set up the default values of the four control points that */
778   /* define the stem darkening behaviour of the (new) CFF engine.  For     */
779   /* more details please read the documentation of the                     */
780   /* `darkening-parameters' property of the cff driver module (file        */
781   /* `ftcffdrv.h'), which allows the control at run-time.                  */
782   /*                                                                       */
783   /* Do *not* undefine these macros!                                       */
784   /*                                                                       */
785 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1   500
786 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1   400
787
788 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2  1000
789 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2   275
790
791 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3  1667
792 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3   275
793
794 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4  2333
795 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4     0
796
797
798   /*************************************************************************/
799   /*                                                                       */
800   /* CFF_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe CFF       */
801   /* engine gets compiled into FreeType.  If defined, it is possible to    */
802   /* switch between the two engines using the `hinting-engine' property of */
803   /* the cff driver module.                                                */
804   /*                                                                       */
805 /* #define CFF_CONFIG_OPTION_OLD_ENGINE */
806
807
808   /*************************************************************************/
809   /*************************************************************************/
810   /****                                                                 ****/
811   /****    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     ****/
812   /****                                                                 ****/
813   /*************************************************************************/
814   /*************************************************************************/
815
816
817   /*************************************************************************/
818   /*                                                                       */
819   /* Compile autofit module with CJK (Chinese, Japanese, Korean) script    */
820   /* support.                                                              */
821   /*                                                                       */
822 #define AF_CONFIG_OPTION_CJK
823
824   /*************************************************************************/
825   /*                                                                       */
826   /* Compile autofit module with Indic script support.                     */
827   /*                                                                       */
828 #define AF_CONFIG_OPTION_INDIC
829
830   /*************************************************************************/
831   /*                                                                       */
832   /* Compile autofit module with warp hinting.  The idea of the warping    */
833   /* code is to slightly scale and shift a glyph within a single dimension */
834   /* so that as much of its segments are aligned (more or less) on the     */
835   /* grid.  To find out the optimal scaling and shifting value, various    */
836   /* parameter combinations are tried and scored.                          */
837   /*                                                                       */
838   /* This experimental option is only active if the render mode is         */
839   /* FT_RENDER_MODE_LIGHT.                                                 */
840   /*                                                                       */
841 /* #define AF_CONFIG_OPTION_USE_WARPER */
842
843   /* */
844
845
846   /*
847    * This macro is obsolete.  Support has been removed in FreeType
848    * version 2.5.
849    */
850 /* #define FT_CONFIG_OPTION_OLD_INTERNALS */
851
852
853   /*
854    * This macro is defined if either unpatented or native TrueType
855    * hinting is requested by the definitions above.
856    */
857 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
858 #define  TT_USE_BYTECODE_INTERPRETER
859 #undef   TT_CONFIG_OPTION_UNPATENTED_HINTING
860 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING
861 #define  TT_USE_BYTECODE_INTERPRETER
862 #endif
863
864
865   /*
866    * Check CFF darkening parameters.  The checks are the same as in function
867    * `cff_property_set' in file `cffdrivr.c'.
868    */
869 #if CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 < 0   || \
870     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 < 0   || \
871     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 < 0   || \
872     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 < 0   || \
873                                                       \
874     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 < 0   || \
875     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 < 0   || \
876     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 < 0   || \
877     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 < 0   || \
878                                                       \
879     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 >        \
880       CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2     || \
881     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 >        \
882       CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3     || \
883     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 >        \
884       CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4     || \
885                                                       \
886     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 > 500 || \
887     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 > 500 || \
888     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 > 500 || \
889     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 > 500
890 #error "Invalid CFF darkening parameters!"
891 #endif
892
893 FT_END_HEADER
894
895
896 #endif /* __FTOPTION_H__ */
897
898
899 /* END */