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1 /***************************************************************************/
2 /*                                                                         */
3 /*  ftoption.h (for development)                                           */
4 /*                                                                         */
5 /*    User-selectable configuration macros (specification only).           */
6 /*                                                                         */
7 /*  Copyright 1996-2015 by                                                 */
8 /*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
9 /*                                                                         */
10 /*  This file is part of the FreeType project, and may only be used,       */
11 /*  modified, and distributed under the terms of the FreeType project      */
12 /*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
13 /*  this file you indicate that you have read the license and              */
14 /*  understand and accept it fully.                                        */
15 /*                                                                         */
16 /***************************************************************************/
17 
18 
19 #ifndef __FTOPTION_H__
20 #define __FTOPTION_H__
21 
22 
23 #include <ft2build.h>
24 
25 
26 FT_BEGIN_HEADER
27 
28   /*************************************************************************/
29   /*                                                                       */
30   /*                 USER-SELECTABLE CONFIGURATION MACROS                  */
31   /*                                                                       */
32   /* This file contains the default configuration macro definitions for    */
33   /* a standard build of the FreeType library.  There are three ways to    */
34   /* use this file to build project-specific versions of the library:      */
35   /*                                                                       */
36   /*  - You can modify this file by hand, but this is not recommended in   */
37   /*    cases where you would like to build several versions of the        */
38   /*    library from a single source directory.                            */
39   /*                                                                       */
40   /*  - You can put a copy of this file in your build directory, more      */
41   /*    precisely in `$BUILD/freetype/config/ftoption.h', where `$BUILD'   */
42   /*    is the name of a directory that is included _before_ the FreeType  */
43   /*    include path during compilation.                                   */
44   /*                                                                       */
45   /*    The default FreeType Makefiles and Jamfiles use the build          */
46   /*    directory `builds/<system>' by default, but you can easily change  */
47   /*    that for your own projects.                                        */
48   /*                                                                       */
49   /*  - Copy the file <ft2build.h> to `$BUILD/ft2build.h' and modify it    */
50   /*    slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to       */
51   /*    locate this file during the build.  For example,                   */
52   /*                                                                       */
53   /*      #define FT_CONFIG_OPTIONS_H  <myftoptions.h>                     */
54   /*      #include <freetype/config/ftheader.h>                            */
55   /*                                                                       */
56   /*    will use `$BUILD/myftoptions.h' instead of this file for macro     */
57   /*    definitions.                                                       */
58   /*                                                                       */
59   /*    Note also that you can similarly pre-define the macro              */
60   /*    FT_CONFIG_MODULES_H used to locate the file listing of the modules */
61   /*    that are statically linked to the library at compile time.  By     */
62   /*    default, this file is <freetype/config/ftmodule.h>.                */
63   /*                                                                       */
64   /* We highly recommend using the third method whenever possible.         */
65   /*                                                                       */
66   /*************************************************************************/
67 
68 
69   /*************************************************************************/
70   /*************************************************************************/
71   /****                                                                 ****/
72   /**** G E N E R A L   F R E E T Y P E   2   C O N F I G U R A T I O N ****/
73   /****                                                                 ****/
74   /*************************************************************************/
75   /*************************************************************************/
76 
77 
78   /*************************************************************************/
79   /*                                                                       */
80   /* Uncomment the line below if you want to activate sub-pixel rendering  */
81   /* (a.k.a. LCD rendering, or ClearType) in this build of the library.    */
82   /*                                                                       */
83   /* Note that this feature is covered by several Microsoft patents        */
84   /* and should not be activated in any default build of the library.      */
85   /*                                                                       */
86   /* This macro has no impact on the FreeType API, only on its             */
87   /* _implementation_.  For example, using FT_RENDER_MODE_LCD when calling */
88   /* FT_Render_Glyph still generates a bitmap that is 3 times wider than   */
89   /* the original size in case this macro isn't defined; however, each     */
90   /* triplet of subpixels has R=G=B.                                       */
91   /*                                                                       */
92   /* This is done to allow FreeType clients to run unmodified, forcing     */
93   /* them to display normal gray-level anti-aliased glyphs.                */
94   /*                                                                       */
95 #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING
96 
97 
98   /*************************************************************************/
99   /*                                                                       */
100   /* Many compilers provide a non-ANSI 64-bit data type that can be used   */
101   /* by FreeType to speed up some computations.  However, this will create */
102   /* some problems when compiling the library in strict ANSI mode.         */
103   /*                                                                       */
104   /* For this reason, the use of 64-bit integers is normally disabled when */
105   /* the __STDC__ macro is defined.  You can however disable this by       */
106   /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here.                 */
107   /*                                                                       */
108   /* For most compilers, this will only create compilation warnings when   */
109   /* building the library.                                                 */
110   /*                                                                       */
111   /* ObNote: The compiler-specific 64-bit integers are detected in the     */
112   /*         file `ftconfig.h' either statically or through the            */
113   /*         `configure' script on supported platforms.                    */
114   /*                                                                       */
115 #undef FT_CONFIG_OPTION_FORCE_INT64
116 
117 
118   /*************************************************************************/
119   /*                                                                       */
120   /* If this macro is defined, do not try to use an assembler version of   */
121   /* performance-critical functions (e.g. FT_MulFix).  You should only do  */
122   /* that to verify that the assembler function works properly, or to      */
123   /* execute benchmark tests of the various implementations.               */
124 /* #define FT_CONFIG_OPTION_NO_ASSEMBLER */
125 
126 
127   /*************************************************************************/
128   /*                                                                       */
129   /* If this macro is defined, try to use an inlined assembler version of  */
130   /* the `FT_MulFix' function, which is a `hotspot' when loading and       */
131   /* hinting glyphs, and which should be executed as fast as possible.     */
132   /*                                                                       */
133   /* Note that if your compiler or CPU is not supported, this will default */
134   /* to the standard and portable implementation found in `ftcalc.c'.      */
135   /*                                                                       */
136 #define FT_CONFIG_OPTION_INLINE_MULFIX
137 
138 
139   /*************************************************************************/
140   /*                                                                       */
141   /* LZW-compressed file support.                                          */
142   /*                                                                       */
143   /*   FreeType now handles font files that have been compressed with the  */
144   /*   `compress' program.  This is mostly used to parse many of the PCF   */
145   /*   files that come with various X11 distributions.  The implementation */
146   /*   uses NetBSD's `zopen' to partially uncompress the file on the fly   */
147   /*   (see src/lzw/ftgzip.c).                                             */
148   /*                                                                       */
149   /*   Define this macro if you want to enable this `feature'.             */
150   /*                                                                       */
151 #define FT_CONFIG_OPTION_USE_LZW
152 
153 
154   /*************************************************************************/
155   /*                                                                       */
156   /* Gzip-compressed file support.                                         */
157   /*                                                                       */
158   /*   FreeType now handles font files that have been compressed with the  */
159   /*   `gzip' program.  This is mostly used to parse many of the PCF files */
160   /*   that come with XFree86.  The implementation uses `zlib' to          */
161   /*   partially uncompress the file on the fly (see src/gzip/ftgzip.c).   */
162   /*                                                                       */
163   /*   Define this macro if you want to enable this `feature'.  See also   */
164   /*   the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below.                       */
165   /*                                                                       */
166 #define FT_CONFIG_OPTION_USE_ZLIB
167 
168 
169   /*************************************************************************/
170   /*                                                                       */
171   /* ZLib library selection                                                */
172   /*                                                                       */
173   /*   This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined.  */
174   /*   It allows FreeType's `ftgzip' component to link to the system's     */
175   /*   installation of the ZLib library.  This is useful on systems like   */
176   /*   Unix or VMS where it generally is already available.                */
177   /*                                                                       */
178   /*   If you let it undefined, the component will use its own copy        */
179   /*   of the zlib sources instead.  These have been modified to be        */
180   /*   included directly within the component and *not* export external    */
181   /*   function names.  This allows you to link any program with FreeType  */
182   /*   _and_ ZLib without linking conflicts.                               */
183   /*                                                                       */
184   /*   Do not #undef this macro here since the build system might define   */
185   /*   it for certain configurations only.                                 */
186   /*                                                                       */
187 /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */
188 
189 
190   /*************************************************************************/
191   /*                                                                       */
192   /* Bzip2-compressed file support.                                        */
193   /*                                                                       */
194   /*   FreeType now handles font files that have been compressed with the  */
195   /*   `bzip2' program.  This is mostly used to parse many of the PCF      */
196   /*   files that come with XFree86.  The implementation uses `libbz2' to  */
197   /*   partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */
198   /*   Contrary to gzip, bzip2 currently is not included and need to use   */
199   /*   the system available bzip2 implementation.                          */
200   /*                                                                       */
201   /*   Define this macro if you want to enable this `feature'.             */
202   /*                                                                       */
203 #define FT_CONFIG_OPTION_USE_BZIP2
204 
205 
206   /*************************************************************************/
207   /*                                                                       */
208   /* Define to disable the use of file stream functions and types, FILE,   */
209   /* fopen() etc.  Enables the use of smaller system libraries on embedded */
210   /* systems that have multiple system libraries, some with or without     */
211   /* file stream support, in the cases where file stream support is not    */
212   /* necessary such as memory loading of font files.                       */
213   /*                                                                       */
214 /* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */
215 
216 
217   /*************************************************************************/
218   /*                                                                       */
219   /* 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 #define 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 #define FT_RENDER_POOL_SIZE  16384L
382 
383 
384   /*************************************************************************/
385   /*                                                                       */
386   /* FT_MAX_MODULES                                                        */
387   /*                                                                       */
388   /*   The maximum number of modules that can be registered in a single    */
389   /*   FreeType library object.  32 is the default.                        */
390   /*                                                                       */
391 #define FT_MAX_MODULES  32
392 
393 
394   /*************************************************************************/
395   /*                                                                       */
396   /* Debug level                                                           */
397   /*                                                                       */
398   /*   FreeType can be compiled in debug or trace mode.  In debug mode,    */
399   /*   errors are reported through the `ftdebug' component.  In trace      */
400   /*   mode, additional messages are sent to the standard output during    */
401   /*   execution.                                                          */
402   /*                                                                       */
403   /*   Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode.     */
404   /*   Define FT_DEBUG_LEVEL_TRACE to build it in trace mode.              */
405   /*                                                                       */
406   /*   Don't define any of these macros to compile in `release' mode!      */
407   /*                                                                       */
408   /*   Do not #undef these macros here since the build system might define */
409   /*   them for certain configurations only.                               */
410   /*                                                                       */
411 #define FT_DEBUG_LEVEL_ERROR
412 #define FT_DEBUG_LEVEL_TRACE
413 
414 
415   /*************************************************************************/
416   /*                                                                       */
417   /* Autofitter debugging                                                  */
418   /*                                                                       */
419   /*   If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to     */
420   /*   control the autofitter behaviour for debugging purposes with global */
421   /*   boolean variables (consequently, you should *never* enable this     */
422   /*   while compiling in `release' mode):                                 */
423   /*                                                                       */
424   /*     _af_debug_disable_horz_hints                                      */
425   /*     _af_debug_disable_vert_hints                                      */
426   /*     _af_debug_disable_blue_hints                                      */
427   /*                                                                       */
428   /*   Additionally, the following functions provide dumps of various      */
429   /*   internal autofit structures to stdout (using `printf'):             */
430   /*                                                                       */
431   /*     af_glyph_hints_dump_points                                        */
432   /*     af_glyph_hints_dump_segments                                      */
433   /*     af_glyph_hints_dump_edges                                         */
434   /*     af_glyph_hints_get_num_segments                                   */
435   /*     af_glyph_hints_get_segment_offset                                 */
436   /*                                                                       */
437   /*   As an argument, they use another global variable:                   */
438   /*                                                                       */
439   /*     _af_debug_hints                                                   */
440   /*                                                                       */
441   /*   Please have a look at the `ftgrid' demo program to see how those    */
442   /*   variables and macros should be used.                                */
443   /*                                                                       */
444   /*   Do not #undef these macros here since the build system might define */
445   /*   them for certain configurations only.                               */
446   /*                                                                       */
447 #define FT_DEBUG_AUTOFIT
448 
449 
450   /*************************************************************************/
451   /*                                                                       */
452   /* Memory Debugging                                                      */
453   /*                                                                       */
454   /*   FreeType now comes with an integrated memory debugger that is       */
455   /*   capable of detecting simple errors like memory leaks or double      */
456   /*   deletes.  To compile it within your build of the library, you       */
457   /*   should define FT_DEBUG_MEMORY here.                                 */
458   /*                                                                       */
459   /*   Note that the memory debugger is only activated at runtime when     */
460   /*   when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */
461   /*                                                                       */
462   /*   Do not #undef this macro here since the build system might define   */
463   /*   it for certain configurations only.                                 */
464   /*                                                                       */
465 #define FT_DEBUG_MEMORY
466 
467 
468   /*************************************************************************/
469   /*                                                                       */
470   /* Module errors                                                         */
471   /*                                                                       */
472   /*   If this macro is set (which is _not_ the default), the higher byte  */
473   /*   of an error code gives the module in which the error has occurred,  */
474   /*   while the lower byte is the real error code.                        */
475   /*                                                                       */
476   /*   Setting this macro makes sense for debugging purposes only, since   */
477   /*   it would break source compatibility of certain programs that use    */
478   /*   FreeType 2.                                                         */
479   /*                                                                       */
480   /*   More details can be found in the files ftmoderr.h and fterrors.h.   */
481   /*                                                                       */
482 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS
483 
484 
485   /*************************************************************************/
486   /*                                                                       */
487   /* Position Independent Code                                             */
488   /*                                                                       */
489   /*   If this macro is set (which is _not_ the default), FreeType2 will   */
490   /*   avoid creating constants that require address fixups.  Instead the  */
491   /*   constants will be moved into a struct and additional intialization  */
492   /*   code will be used.                                                  */
493   /*                                                                       */
494   /*   Setting this macro is needed for systems that prohibit address      */
495   /*   fixups, such as BREW.                                               */
496   /*                                                                       */
497 /* #define FT_CONFIG_OPTION_PIC */
498 
499 
500   /*************************************************************************/
501   /*************************************************************************/
502   /****                                                                 ****/
503   /****        S F N T   D R I V E R    C O N F I G U R A T I O N       ****/
504   /****                                                                 ****/
505   /*************************************************************************/
506   /*************************************************************************/
507 
508 
509   /*************************************************************************/
510   /*                                                                       */
511   /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support       */
512   /* embedded bitmaps in all formats using the SFNT module (namely         */
513   /* TrueType & OpenType).                                                 */
514   /*                                                                       */
515 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS
516 
517 
518   /*************************************************************************/
519   /*                                                                       */
520   /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to    */
521   /* load and enumerate the glyph Postscript names in a TrueType or        */
522   /* OpenType file.                                                        */
523   /*                                                                       */
524   /* Note that when you do not compile the `PSNames' module by undefining  */
525   /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will   */
526   /* contain additional code used to read the PS Names table from a font.  */
527   /*                                                                       */
528   /* (By default, the module uses `PSNames' to extract glyph names.)       */
529   /*                                                                       */
530 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES
531 
532 
533   /*************************************************************************/
534   /*                                                                       */
535   /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to       */
536   /* access the internal name table in a SFNT-based format like TrueType   */
537   /* or OpenType.  The name table contains various strings used to         */
538   /* describe the font, like family name, copyright, version, etc.  It     */
539   /* does not contain any glyph name though.                               */
540   /*                                                                       */
541   /* Accessing SFNT names is done through the functions declared in        */
542   /* `ftsnames.h'.                                                         */
543   /*                                                                       */
544 #define TT_CONFIG_OPTION_SFNT_NAMES
545 
546 
547   /*************************************************************************/
548   /*                                                                       */
549   /* TrueType CMap support                                                 */
550   /*                                                                       */
551   /*   Here you can fine-tune which TrueType CMap table format shall be    */
552   /*   supported.                                                          */
553 #define TT_CONFIG_CMAP_FORMAT_0
554 #define TT_CONFIG_CMAP_FORMAT_2
555 #define TT_CONFIG_CMAP_FORMAT_4
556 #define TT_CONFIG_CMAP_FORMAT_6
557 #define TT_CONFIG_CMAP_FORMAT_8
558 #define TT_CONFIG_CMAP_FORMAT_10
559 #define TT_CONFIG_CMAP_FORMAT_12
560 #define TT_CONFIG_CMAP_FORMAT_13
561 #define TT_CONFIG_CMAP_FORMAT_14
562 
563 
564   /*************************************************************************/
565   /*************************************************************************/
566   /****                                                                 ****/
567   /****    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   ****/
568   /****                                                                 ****/
569   /*************************************************************************/
570   /*************************************************************************/
571 
572   /*************************************************************************/
573   /*                                                                       */
574   /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile   */
575   /* a bytecode interpreter in the TrueType driver.                        */
576   /*                                                                       */
577   /* By undefining this, you will only compile the code necessary to load  */
578   /* TrueType glyphs without hinting.                                      */
579   /*                                                                       */
580   /*   Do not #undef this macro here, since the build system might         */
581   /*   define it for certain configurations only.                          */
582   /*                                                                       */
583 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
584 
585 
586   /*************************************************************************/
587   /*                                                                       */
588   /* Define TT_CONFIG_OPTION_SUBPIXEL_HINTING if you want to compile       */
589   /* EXPERIMENTAL subpixel hinting support into the TrueType driver.  This */
590   /* replaces the native TrueType hinting mechanism when anything but      */
591   /* FT_RENDER_MODE_MONO is requested.                                     */
592   /*                                                                       */
593   /* Enabling this causes the TrueType driver to ignore instructions under */
594   /* certain conditions.  This is done in accordance with the guide here,  */
595   /* with some minor differences:                                          */
596   /*                                                                       */
597   /*  http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx */
598   /*                                                                       */
599   /* By undefining this, you only compile the code necessary to hint       */
600   /* TrueType glyphs with native TT hinting.                               */
601   /*                                                                       */
602   /*   This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be    */
603   /*   defined.                                                            */
604   /*                                                                       */
605 #define TT_CONFIG_OPTION_SUBPIXEL_HINTING
606 
607 
608   /*************************************************************************/
609   /*                                                                       */
610   /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version  */
611   /* of the TrueType bytecode interpreter is used that doesn't implement   */
612   /* any of the patented opcodes and algorithms.  The patents related to   */
613   /* TrueType hinting have expired worldwide since May 2010; this option   */
614   /* is now deprecated.                                                    */
615   /*                                                                       */
616   /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored*  */
617   /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words,  */
618   /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or                */
619   /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time.    */
620   /*                                                                       */
621   /* This macro is only useful for a small number of font files (mostly    */
622   /* for Asian scripts) that require bytecode interpretation to properly   */
623   /* load glyphs.  For all other fonts, this produces unpleasant results,  */
624   /* thus the unpatented interpreter is never used to load glyphs from     */
625   /* TrueType fonts unless one of the following two options is used.       */
626   /*                                                                       */
627   /*   - The unpatented interpreter is explicitly activated by the user    */
628   /*     through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag         */
629   /*     when opening the FT_Face.                                         */
630   /*                                                                       */
631   /*   - FreeType detects that the FT_Face corresponds to one of the       */
632   /*     `trick' fonts (e.g., `Mingliu') it knows about.  The font engine  */
633   /*     contains a hard-coded list of font names and other matching       */
634   /*     parameters (see function `tt_face_init' in file                   */
635   /*     `src/truetype/ttobjs.c').                                         */
636   /*                                                                       */
637   /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */
638   /*                                                                       */
639   /*   {                                                                   */
640   /*     FT_Parameter  parameter;                                          */
641   /*     FT_Open_Args  open_args;                                          */
642   /*                                                                       */
643   /*                                                                       */
644   /*     parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING;                  */
645   /*                                                                       */
646   /*     open_args.flags      = FT_OPEN_PATHNAME | FT_OPEN_PARAMS;         */
647   /*     open_args.pathname   = my_font_pathname;                          */
648   /*     open_args.num_params = 1;                                         */
649   /*     open_args.params     = &parameter;                                */
650   /*                                                                       */
651   /*     error = FT_Open_Face( library, &open_args, index, &face );        */
652   /*     ...                                                               */
653   /*   }                                                                   */
654   /*                                                                       */
655 /* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */
656 
657 
658   /*************************************************************************/
659   /*                                                                       */
660   /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the        */
661   /* TrueType glyph loader to use Apple's definition of how to handle      */
662   /* component offsets in composite glyphs.                                */
663   /*                                                                       */
664   /* Apple and MS disagree on the default behavior of component offsets    */
665   /* in composites.  Apple says that they should be scaled by the scaling  */
666   /* factors in the transformation matrix (roughly, it's more complex)     */
667   /* while MS says they should not.  OpenType defines two bits in the      */
668   /* composite flags array which can be used to disambiguate, but old      */
669   /* fonts will not have them.                                             */
670   /*                                                                       */
671   /*   http://www.microsoft.com/typography/otspec/glyf.htm                 */
672   /*   https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6glyf.html */
673   /*                                                                       */
674 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED
675 
676 
677   /*************************************************************************/
678   /*                                                                       */
679   /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include         */
680   /* support for Apple's distortable font technology (fvar, gvar, cvar,    */
681   /* and avar tables).  This has many similarities to Type 1 Multiple      */
682   /* Masters support.                                                      */
683   /*                                                                       */
684 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT
685 
686 
687   /*************************************************************************/
688   /*                                                                       */
689   /* Define TT_CONFIG_OPTION_BDF if you want to include support for        */
690   /* an embedded `BDF ' table within SFNT-based bitmap formats.            */
691   /*                                                                       */
692 #define TT_CONFIG_OPTION_BDF
693 
694 
695   /*************************************************************************/
696   /*                                                                       */
697   /* Option TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES controls the maximum     */
698   /* number of bytecode instructions executed for a single run of the      */
699   /* bytecode interpreter, needed to prevent infinite loops.  You don't    */
700   /* want to change this except for very special situations (e.g., making  */
701   /* a library fuzzer spend less time to handle broken fonts).             */
702   /*                                                                       */
703   /* It is not expected that this value is ever modified by a configuring  */
704   /* script; instead, it gets surrounded with #ifndef ... #endif so that   */
705   /* the value can be set as a preprocessor option on the compiler's       */
706   /* command line.                                                         */
707   /*                                                                       */
708 #ifndef TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES
709 #define TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES  1000000L
710 #endif
711 
712 
713   /*************************************************************************/
714   /*************************************************************************/
715   /****                                                                 ****/
716   /****      T Y P E 1   D R I V E R    C O N F I G U R A T I O N       ****/
717   /****                                                                 ****/
718   /*************************************************************************/
719   /*************************************************************************/
720 
721 
722   /*************************************************************************/
723   /*                                                                       */
724   /* T1_MAX_DICT_DEPTH is the maximum depth of nest dictionaries and       */
725   /* arrays in the Type 1 stream (see t1load.c).  A minimum of 4 is        */
726   /* required.                                                             */
727   /*                                                                       */
728 #define T1_MAX_DICT_DEPTH  5
729 
730 
731   /*************************************************************************/
732   /*                                                                       */
733   /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine   */
734   /* calls during glyph loading.                                           */
735   /*                                                                       */
736 #define T1_MAX_SUBRS_CALLS  16
737 
738 
739   /*************************************************************************/
740   /*                                                                       */
741   /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity.  A     */
742   /* minimum of 16 is required.                                            */
743   /*                                                                       */
744   /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */
745   /*                                                                       */
746 #define T1_MAX_CHARSTRINGS_OPERANDS  256
747 
748 
749   /*************************************************************************/
750   /*                                                                       */
751   /* Define this configuration macro if you want to prevent the            */
752   /* compilation of `t1afm', which is in charge of reading Type 1 AFM      */
753   /* files into an existing face.  Note that if set, the T1 driver will be */
754   /* unable to produce kerning distances.                                  */
755   /*                                                                       */
756 #undef T1_CONFIG_OPTION_NO_AFM
757 
758 
759   /*************************************************************************/
760   /*                                                                       */
761   /* Define this configuration macro if you want to prevent the            */
762   /* compilation of the Multiple Masters font support in the Type 1        */
763   /* driver.                                                               */
764   /*                                                                       */
765 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT
766 
767 
768   /*************************************************************************/
769   /*************************************************************************/
770   /****                                                                 ****/
771   /****         C F F   D R I V E R    C O N F I G U R A T I O N        ****/
772   /****                                                                 ****/
773   /*************************************************************************/
774   /*************************************************************************/
775 
776 
777   /*************************************************************************/
778   /*                                                                       */
779   /* Using CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4} it is      */
780   /* possible to set up the default values of the four control points that */
781   /* define the stem darkening behaviour of the (new) CFF engine.  For     */
782   /* more details please read the documentation of the                     */
783   /* `darkening-parameters' property of the cff driver module (file        */
784   /* `ftcffdrv.h'), which allows the control at run-time.                  */
785   /*                                                                       */
786   /* Do *not* undefine these macros!                                       */
787   /*                                                                       */
788 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1   500
789 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1   400
790 
791 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2  1000
792 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2   275
793 
794 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3  1667
795 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3   275
796 
797 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4  2333
798 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4     0
799 
800 
801   /*************************************************************************/
802   /*                                                                       */
803   /* CFF_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe CFF       */
804   /* engine gets compiled into FreeType.  If defined, it is possible to    */
805   /* switch between the two engines using the `hinting-engine' property of */
806   /* the cff driver module.                                                */
807   /*                                                                       */
808 #define CFF_CONFIG_OPTION_OLD_ENGINE
809 
810 
811   /*************************************************************************/
812   /*************************************************************************/
813   /****                                                                 ****/
814   /****    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     ****/
815   /****                                                                 ****/
816   /*************************************************************************/
817   /*************************************************************************/
818 
819 
820   /*************************************************************************/
821   /*                                                                       */
822   /* Compile autofit module with CJK (Chinese, Japanese, Korean) script    */
823   /* support.                                                              */
824   /*                                                                       */
825 #define AF_CONFIG_OPTION_CJK
826 
827   /*************************************************************************/
828   /*                                                                       */
829   /* Compile autofit module with Indic script support.                     */
830   /*                                                                       */
831 #define AF_CONFIG_OPTION_INDIC
832 
833   /*************************************************************************/
834   /*                                                                       */
835   /* Compile autofit module with warp hinting.  The idea of the warping    */
836   /* code is to slightly scale and shift a glyph within a single dimension */
837   /* so that as much of its segments are aligned (more or less) on the     */
838   /* grid.  To find out the optimal scaling and shifting value, various    */
839   /* parameter combinations are tried and scored.                          */
840   /*                                                                       */
841   /* This experimental option is active only if the rendering mode is      */
842   /* FT_RENDER_MODE_LIGHT; you can switch warping on and off with the      */
843   /* `warping' property of the auto-hinter (see file `ftautoh.h' for more  */
844   /* information; by default it is switched off).                          */
845   /*                                                                       */
846 #define AF_CONFIG_OPTION_USE_WARPER
847 
848   /* */
849 
850 
851   /*
852    * This macro is obsolete.  Support has been removed in FreeType
853    * version 2.5.
854    */
855 /* #define FT_CONFIG_OPTION_OLD_INTERNALS */
856 
857 
858   /*
859    * This macro is defined if either unpatented or native TrueType
860    * hinting is requested by the definitions above.
861    */
862 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
863 #define  TT_USE_BYTECODE_INTERPRETER
864 #undef   TT_CONFIG_OPTION_UNPATENTED_HINTING
865 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING
866 #define  TT_USE_BYTECODE_INTERPRETER
867 #endif
868 
869 
870   /*
871    * Check CFF darkening parameters.  The checks are the same as in function
872    * `cff_property_set' in file `cffdrivr.c'.
873    */
874 #if CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 < 0   || \
875     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 < 0   || \
876     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 < 0   || \
877     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 < 0   || \
878                                                       \
879     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 < 0   || \
880     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 < 0   || \
881     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 < 0   || \
882     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 < 0   || \
883                                                       \
884     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 >        \
885       CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2     || \
886     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 >        \
887       CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3     || \
888     CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 >        \
889       CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4     || \
890                                                       \
891     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 > 500 || \
892     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 > 500 || \
893     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 > 500 || \
894     CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 > 500
895 #error "Invalid CFF darkening parameters!"
896 #endif
897 
898 FT_END_HEADER
899 
900 
901 #endif /* __FTOPTION_H__ */
902 
903 
904 /* END */
905