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ftoption.h
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1 /***************************************************************************/
2 /* */
3 /* ftoption.h */
4 /* */
5 /* User-selectable configuration macros (specification only). */
6 /* */
7 /* Copyright 1996-2011 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
9 /* */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
15 /* */
16 /***************************************************************************/
17 
18 
19 #ifndef __FTOPTION_H__
20 #define __FTOPTION_H__
21 
22 
23 #include <ft2build.h>
24 
25 
26 FT_BEGIN_HEADER
27 
28  /*************************************************************************/
29  /* */
30  /* USER-SELECTABLE CONFIGURATION MACROS */
31  /* */
32  /* This file contains the default configuration macro definitions for */
33  /* a standard build of the FreeType library. There are three ways to */
34  /* use this file to build project-specific versions of the library: */
35  /* */
36  /* - You can modify this file by hand, but this is not recommended in */
37  /* cases where you would like to build several versions of the */
38  /* library from a single source directory. */
39  /* */
40  /* - You can put a copy of this file in your build directory, more */
41  /* precisely in `$BUILD/freetype/config/ftoption.h', where `$BUILD' */
42  /* is the name of a directory that is included _before_ the FreeType */
43  /* include path during compilation. */
44  /* */
45  /* The default FreeType Makefiles and Jamfiles use the build */
46  /* directory `builds/<system>' by default, but you can easily change */
47  /* that for your own projects. */
48  /* */
49  /* - Copy the file <ft2build.h> to `$BUILD/ft2build.h' and modify it */
50  /* slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to */
51  /* locate this file during the build. For example, */
52  /* */
53  /* #define FT_CONFIG_OPTIONS_H <myftoptions.h> */
54  /* #include <freetype/config/ftheader.h> */
55  /* */
56  /* will use `$BUILD/myftoptions.h' instead of this file for macro */
57  /* definitions. */
58  /* */
59  /* Note also that you can similarly pre-define the macro */
60  /* FT_CONFIG_MODULES_H used to locate the file listing of the modules */
61  /* that are statically linked to the library at compile time. By */
62  /* default, this file is <freetype/config/ftmodule.h>. */
63  /* */
64  /* We highly recommend using the third method whenever possible. */
65  /* */
66  /*************************************************************************/
67 
68 
69  /*************************************************************************/
70  /*************************************************************************/
71  /**** ****/
72  /**** G E N E R A L F R E E T Y P E 2 C O N F I G U R A T I O N ****/
73  /**** ****/
74  /*************************************************************************/
75  /*************************************************************************/
76 
77 
78  /*************************************************************************/
79  /* */
80  /* Uncomment the line below if you want to activate sub-pixel rendering */
81  /* (a.k.a. LCD rendering, or ClearType) in this build of the library. */
82  /* */
83  /* Note that this feature is covered by several Microsoft patents */
84  /* and should not be activated in any default build of the library. */
85  /* */
86  /* This macro has no impact on the FreeType API, only on its */
87  /* _implementation_. For example, using FT_RENDER_MODE_LCD when calling */
88  /* FT_Render_Glyph still generates a bitmap that is 3 times wider than */
89  /* the original size in case this macro isn't defined; however, each */
90  /* triplet of subpixels has R=G=B. */
91  /* */
92  /* This is done to allow FreeType clients to run unmodified, forcing */
93  /* them to display normal gray-level anti-aliased glyphs. */
94  /* */
95 /* #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING */
96 
97 
98  /*************************************************************************/
99  /* */
100  /* Many compilers provide a non-ANSI 64-bit data type that can be used */
101  /* by FreeType to speed up some computations. However, this will create */
102  /* some problems when compiling the library in strict ANSI mode. */
103  /* */
104  /* For this reason, the use of 64-bit integers is normally disabled when */
105  /* the __STDC__ macro is defined. You can however disable this by */
106  /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here. */
107  /* */
108  /* For most compilers, this will only create compilation warnings when */
109  /* building the library. */
110  /* */
111  /* ObNote: The compiler-specific 64-bit integers are detected in the */
112  /* file `ftconfig.h' either statically or through the */
113  /* `configure' script on supported platforms. */
114  /* */
115 #undef FT_CONFIG_OPTION_FORCE_INT64
116 
117 
118  /*************************************************************************/
119  /* */
120  /* If this macro is defined, do not try to use an assembler version of */
121  /* performance-critical functions (e.g. FT_MulFix). You should only do */
122  /* that to verify that the assembler function works properly, or to */
123  /* execute benchmark tests of the various implementations. */
124 /* #define FT_CONFIG_OPTION_NO_ASSEMBLER */
125 
126 
127  /*************************************************************************/
128  /* */
129  /* If this macro is defined, try to use an inlined assembler version of */
130  /* the `FT_MulFix' function, which is a `hotspot' when loading and */
131  /* hinting glyphs, and which should be executed as fast as possible. */
132  /* */
133  /* Note that if your compiler or CPU is not supported, this will default */
134  /* to the standard and portable implementation found in `ftcalc.c'. */
135  /* */
136 #define FT_CONFIG_OPTION_INLINE_MULFIX
137 
138 
139  /*************************************************************************/
140  /* */
141  /* LZW-compressed file support. */
142  /* */
143  /* FreeType now handles font files that have been compressed with the */
144  /* `compress' program. This is mostly used to parse many of the PCF */
145  /* files that come with various X11 distributions. The implementation */
146  /* uses NetBSD's `zopen' to partially uncompress the file on the fly */
147  /* (see src/lzw/ftgzip.c). */
148  /* */
149  /* Define this macro if you want to enable this `feature'. */
150  /* */
151 #define FT_CONFIG_OPTION_USE_LZW
152 
153 
154  /*************************************************************************/
155  /* */
156  /* Gzip-compressed file support. */
157  /* */
158  /* FreeType now handles font files that have been compressed with the */
159  /* `gzip' program. This is mostly used to parse many of the PCF files */
160  /* that come with XFree86. The implementation uses `zlib' to */
161  /* partially uncompress the file on the fly (see src/gzip/ftgzip.c). */
162  /* */
163  /* Define this macro if you want to enable this `feature'. See also */
164  /* the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below. */
165  /* */
166 #define FT_CONFIG_OPTION_USE_ZLIB
167 
168 
169  /*************************************************************************/
170  /* */
171  /* ZLib library selection */
172  /* */
173  /* This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined. */
174  /* It allows FreeType's `ftgzip' component to link to the system's */
175  /* installation of the ZLib library. This is useful on systems like */
176  /* Unix or VMS where it generally is already available. */
177  /* */
178  /* If you let it undefined, the component will use its own copy */
179  /* of the zlib sources instead. These have been modified to be */
180  /* included directly within the component and *not* export external */
181  /* function names. This allows you to link any program with FreeType */
182  /* _and_ ZLib without linking conflicts. */
183  /* */
184  /* Do not #undef this macro here since the build system might define */
185  /* it for certain configurations only. */
186  /* */
187 /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */
188 
189 
190  /*************************************************************************/
191  /* */
192  /* Bzip2-compressed file support. */
193  /* */
194  /* FreeType now handles font files that have been compressed with the */
195  /* `bzip2' program. This is mostly used to parse many of the PCF */
196  /* files that come with XFree86. The implementation uses `libbz2' to */
197  /* partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */
198  /* Contrary to gzip, bzip2 currently is not included and need to use */
199  /* the system available bzip2 implementation. */
200  /* */
201  /* Define this macro if you want to enable this `feature'. */
202  /* */
203 /* #define FT_CONFIG_OPTION_USE_BZIP2 */
204 
205 
206  /*************************************************************************/
207  /* */
208  /* Define to disable the use of file stream functions and types, FILE, */
209  /* fopen() etc. Enables the use of smaller system libraries on embedded */
210  /* systems that have multiple system libraries, some with or without */
211  /* file stream support, in the cases where file stream support is not */
212  /* necessary such as memory loading of font files. */
213  /* */
214 /* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */
215 
216 
217  /*************************************************************************/
218  /* */
219  /* DLL export compilation */
220  /* */
221  /* When compiling FreeType as a DLL, some systems/compilers need a */
222  /* special keyword in front OR after the return type of function */
223  /* declarations. */
224  /* */
225  /* Two macros are used within the FreeType source code to define */
226  /* exported library functions: FT_EXPORT and FT_EXPORT_DEF. */
227  /* */
228  /* FT_EXPORT( return_type ) */
229  /* */
230  /* is used in a function declaration, as in */
231  /* */
232  /* FT_EXPORT( FT_Error ) */
233  /* FT_Init_FreeType( FT_Library* alibrary ); */
234  /* */
235  /* */
236  /* FT_EXPORT_DEF( return_type ) */
237  /* */
238  /* is used in a function definition, as in */
239  /* */
240  /* FT_EXPORT_DEF( FT_Error ) */
241  /* FT_Init_FreeType( FT_Library* alibrary ) */
242  /* { */
243  /* ... some code ... */
244  /* return FT_Err_Ok; */
245  /* } */
246  /* */
247  /* You can provide your own implementation of FT_EXPORT and */
248  /* FT_EXPORT_DEF here if you want. If you leave them undefined, they */
249  /* will be later automatically defined as `extern return_type' to */
250  /* allow normal compilation. */
251  /* */
252  /* Do not #undef these macros here since the build system might define */
253  /* them for certain configurations only. */
254  /* */
255 /* #define FT_EXPORT(x) extern x */
256 /* #define FT_EXPORT_DEF(x) x */
257 
258 
259  /*************************************************************************/
260  /* */
261  /* Glyph Postscript Names handling */
262  /* */
263  /* By default, FreeType 2 is compiled with the `psnames' module. This */
264  /* module is in charge of converting a glyph name string into a */
265  /* Unicode value, or return a Macintosh standard glyph name for the */
266  /* use with the TrueType `post' table. */
267  /* */
268  /* Undefine this macro if you do not want `psnames' compiled in your */
269  /* build of FreeType. This has the following effects: */
270  /* */
271  /* - The TrueType driver will provide its own set of glyph names, */
272  /* if you build it to support postscript names in the TrueType */
273  /* `post' table. */
274  /* */
275  /* - The Type 1 driver will not be able to synthesize a Unicode */
276  /* charmap out of the glyphs found in the fonts. */
277  /* */
278  /* You would normally undefine this configuration macro when building */
279  /* a version of FreeType that doesn't contain a Type 1 or CFF driver. */
280  /* */
281 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES
282 
283 
284  /*************************************************************************/
285  /* */
286  /* Postscript Names to Unicode Values support */
287  /* */
288  /* By default, FreeType 2 is built with the `PSNames' module compiled */
289  /* in. Among other things, the module is used to convert a glyph name */
290  /* into a Unicode value. This is especially useful in order to */
291  /* synthesize on the fly a Unicode charmap from the CFF/Type 1 driver */
292  /* through a big table named the `Adobe Glyph List' (AGL). */
293  /* */
294  /* Undefine this macro if you do not want the Adobe Glyph List */
295  /* compiled in your `PSNames' module. The Type 1 driver will not be */
296  /* able to synthesize a Unicode charmap out of the glyphs found in the */
297  /* fonts. */
298  /* */
299 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST
300 
301 
302  /*************************************************************************/
303  /* */
304  /* Support for Mac fonts */
305  /* */
306  /* Define this macro if you want support for outline fonts in Mac */
307  /* format (mac dfont, mac resource, macbinary containing a mac */
308  /* resource) on non-Mac platforms. */
309  /* */
310  /* Note that the `FOND' resource isn't checked. */
311  /* */
312 #define FT_CONFIG_OPTION_MAC_FONTS
313 
314 
315  /*************************************************************************/
316  /* */
317  /* Guessing methods to access embedded resource forks */
318  /* */
319  /* Enable extra Mac fonts support on non-Mac platforms (e.g. */
320  /* GNU/Linux). */
321  /* */
322  /* Resource forks which include fonts data are stored sometimes in */
323  /* locations which users or developers don't expected. In some cases, */
324  /* resource forks start with some offset from the head of a file. In */
325  /* other cases, the actual resource fork is stored in file different */
326  /* from what the user specifies. If this option is activated, */
327  /* FreeType tries to guess whether such offsets or different file */
328  /* names must be used. */
329  /* */
330  /* Note that normal, direct access of resource forks is controlled via */
331  /* the FT_CONFIG_OPTION_MAC_FONTS option. */
332  /* */
333 #ifdef FT_CONFIG_OPTION_MAC_FONTS
334 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK
335 #endif
336 
337 
338  /*************************************************************************/
339  /* */
340  /* Allow the use of FT_Incremental_Interface to load typefaces that */
341  /* contain no glyph data, but supply it via a callback function. */
342  /* This is required by clients supporting document formats which */
343  /* supply font data incrementally as the document is parsed, such */
344  /* as the Ghostscript interpreter for the PostScript language. */
345  /* */
346 #define FT_CONFIG_OPTION_INCREMENTAL
347 
348 
349  /*************************************************************************/
350  /* */
351  /* The size in bytes of the render pool used by the scan-line converter */
352  /* to do all of its work. */
353  /* */
354  /* This must be greater than 4KByte if you use FreeType to rasterize */
355  /* glyphs; otherwise, you may set it to zero to avoid unnecessary */
356  /* allocation of the render pool. */
357  /* */
358 #define FT_RENDER_POOL_SIZE 16384L
359 
360 
361  /*************************************************************************/
362  /* */
363  /* FT_MAX_MODULES */
364  /* */
365  /* The maximum number of modules that can be registered in a single */
366  /* FreeType library object. 32 is the default. */
367  /* */
368 #define FT_MAX_MODULES 32
369 
370 
371  /*************************************************************************/
372  /* */
373  /* Debug level */
374  /* */
375  /* FreeType can be compiled in debug or trace mode. In debug mode, */
376  /* errors are reported through the `ftdebug' component. In trace */
377  /* mode, additional messages are sent to the standard output during */
378  /* execution. */
379  /* */
380  /* Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. */
381  /* Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. */
382  /* */
383  /* Don't define any of these macros to compile in `release' mode! */
384  /* */
385  /* Do not #undef these macros here since the build system might define */
386  /* them for certain configurations only. */
387  /* */
388 /* #define FT_DEBUG_LEVEL_ERROR */
389 /* #define FT_DEBUG_LEVEL_TRACE */
390 
391 
392  /*************************************************************************/
393  /* */
394  /* Autofitter debugging */
395  /* */
396  /* If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to */
397  /* control the autofitter behaviour for debugging purposes with global */
398  /* boolean variables (consequently, you should *never* enable this */
399  /* while compiling in `release' mode): */
400  /* */
401  /* _af_debug_disable_horz_hints */
402  /* _af_debug_disable_vert_hints */
403  /* _af_debug_disable_blue_hints */
404  /* */
405  /* Additionally, the following functions provide dumps of various */
406  /* internal autofit structures to stdout (using `printf'): */
407  /* */
408  /* af_glyph_hints_dump_points */
409  /* af_glyph_hints_dump_segments */
410  /* af_glyph_hints_dump_edges */
411  /* */
412  /* As an argument, they use another global variable: */
413  /* */
414  /* _af_debug_hints */
415  /* */
416  /* Please have a look at the `ftgrid' demo program to see how those */
417  /* variables and macros should be used. */
418  /* */
419  /* Do not #undef these macros here since the build system might define */
420  /* them for certain configurations only. */
421  /* */
422 /* #define FT_DEBUG_AUTOFIT */
423 
424 
425  /*************************************************************************/
426  /* */
427  /* Memory Debugging */
428  /* */
429  /* FreeType now comes with an integrated memory debugger that is */
430  /* capable of detecting simple errors like memory leaks or double */
431  /* deletes. To compile it within your build of the library, you */
432  /* should define FT_DEBUG_MEMORY here. */
433  /* */
434  /* Note that the memory debugger is only activated at runtime when */
435  /* when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */
436  /* */
437  /* Do not #undef this macro here since the build system might define */
438  /* it for certain configurations only. */
439  /* */
440 /* #define FT_DEBUG_MEMORY */
441 
442 
443  /*************************************************************************/
444  /* */
445  /* Module errors */
446  /* */
447  /* If this macro is set (which is _not_ the default), the higher byte */
448  /* of an error code gives the module in which the error has occurred, */
449  /* while the lower byte is the real error code. */
450  /* */
451  /* Setting this macro makes sense for debugging purposes only, since */
452  /* it would break source compatibility of certain programs that use */
453  /* FreeType 2. */
454  /* */
455  /* More details can be found in the files ftmoderr.h and fterrors.h. */
456  /* */
457 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS
458 
459 
460  /*************************************************************************/
461  /* */
462  /* Position Independent Code */
463  /* */
464  /* If this macro is set (which is _not_ the default), FreeType2 will */
465  /* avoid creating constants that require address fixups. Instead the */
466  /* constants will be moved into a struct and additional intialization */
467  /* code will be used. */
468  /* */
469  /* Setting this macro is needed for systems that prohibit address */
470  /* fixups, such as BREW. */
471  /* */
472 /* #define FT_CONFIG_OPTION_PIC */
473 
474 
475  /*************************************************************************/
476  /*************************************************************************/
477  /**** ****/
478  /**** S F N T D R I V E R C O N F I G U R A T I O N ****/
479  /**** ****/
480  /*************************************************************************/
481  /*************************************************************************/
482 
483 
484  /*************************************************************************/
485  /* */
486  /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support */
487  /* embedded bitmaps in all formats using the SFNT module (namely */
488  /* TrueType & OpenType). */
489  /* */
490 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS
491 
492 
493  /*************************************************************************/
494  /* */
495  /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to */
496  /* load and enumerate the glyph Postscript names in a TrueType or */
497  /* OpenType file. */
498  /* */
499  /* Note that when you do not compile the `PSNames' module by undefining */
500  /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will */
501  /* contain additional code used to read the PS Names table from a font. */
502  /* */
503  /* (By default, the module uses `PSNames' to extract glyph names.) */
504  /* */
505 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES
506 
507 
508  /*************************************************************************/
509  /* */
510  /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to */
511  /* access the internal name table in a SFNT-based format like TrueType */
512  /* or OpenType. The name table contains various strings used to */
513  /* describe the font, like family name, copyright, version, etc. It */
514  /* does not contain any glyph name though. */
515  /* */
516  /* Accessing SFNT names is done through the functions declared in */
517  /* `freetype/ftsnames.h'. */
518  /* */
519 #define TT_CONFIG_OPTION_SFNT_NAMES
520 
521 
522  /*************************************************************************/
523  /* */
524  /* TrueType CMap support */
525  /* */
526  /* Here you can fine-tune which TrueType CMap table format shall be */
527  /* supported. */
528 #define TT_CONFIG_CMAP_FORMAT_0
529 #define TT_CONFIG_CMAP_FORMAT_2
530 #define TT_CONFIG_CMAP_FORMAT_4
531 #define TT_CONFIG_CMAP_FORMAT_6
532 #define TT_CONFIG_CMAP_FORMAT_8
533 #define TT_CONFIG_CMAP_FORMAT_10
534 #define TT_CONFIG_CMAP_FORMAT_12
535 #define TT_CONFIG_CMAP_FORMAT_13
536 #define TT_CONFIG_CMAP_FORMAT_14
537 
538 
539  /*************************************************************************/
540  /*************************************************************************/
541  /**** ****/
542  /**** T R U E T Y P E D R I V E R C O N F I G U R A T I O N ****/
543  /**** ****/
544  /*************************************************************************/
545  /*************************************************************************/
546 
547  /*************************************************************************/
548  /* */
549  /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */
550  /* a bytecode interpreter in the TrueType driver. */
551  /* */
552  /* By undefining this, you will only compile the code necessary to load */
553  /* TrueType glyphs without hinting. */
554  /* */
555  /* Do not #undef this macro here, since the build system might */
556  /* define it for certain configurations only. */
557  /* */
558 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
559 
560 
561  /*************************************************************************/
562  /* */
563  /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */
564  /* of the TrueType bytecode interpreter is used that doesn't implement */
565  /* any of the patented opcodes and algorithms. The patents related to */
566  /* TrueType hinting have expired worldwide since May 2010; this option */
567  /* is now deprecated. */
568  /* */
569  /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* */
570  /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, */
571  /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */
572  /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */
573  /* */
574  /* This macro is only useful for a small number of font files (mostly */
575  /* for Asian scripts) that require bytecode interpretation to properly */
576  /* load glyphs. For all other fonts, this produces unpleasant results, */
577  /* thus the unpatented interpreter is never used to load glyphs from */
578  /* TrueType fonts unless one of the following two options is used. */
579  /* */
580  /* - The unpatented interpreter is explicitly activated by the user */
581  /* through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag */
582  /* when opening the FT_Face. */
583  /* */
584  /* - FreeType detects that the FT_Face corresponds to one of the */
585  /* `trick' fonts (e.g., `Mingliu') it knows about. The font engine */
586  /* contains a hard-coded list of font names and other matching */
587  /* parameters (see function `tt_face_init' in file */
588  /* `src/truetype/ttobjs.c'). */
589  /* */
590  /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */
591  /* */
592  /* { */
593  /* FT_Parameter parameter; */
594  /* FT_Open_Args open_args; */
595  /* */
596  /* */
597  /* parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING; */
598  /* */
599  /* open_args.flags = FT_OPEN_PATHNAME | FT_OPEN_PARAMS; */
600  /* open_args.pathname = my_font_pathname; */
601  /* open_args.num_params = 1; */
602  /* open_args.params = &parameter; */
603  /* */
604  /* error = FT_Open_Face( library, &open_args, index, &face ); */
605  /* ... */
606  /* } */
607  /* */
608 /* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */
609 
610 
611  /*************************************************************************/
612  /* */
613  /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType */
614  /* bytecode interpreter with a huge switch statement, rather than a call */
615  /* table. This results in smaller and faster code for a number of */
616  /* architectures. */
617  /* */
618  /* Note however that on some compiler/processor combinations, undefining */
619  /* this macro will generate faster, though larger, code. */
620  /* */
621 #define TT_CONFIG_OPTION_INTERPRETER_SWITCH
622 
623 
624  /*************************************************************************/
625  /* */
626  /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the */
627  /* TrueType glyph loader to use Apple's definition of how to handle */
628  /* component offsets in composite glyphs. */
629  /* */
630  /* Apple and MS disagree on the default behavior of component offsets */
631  /* in composites. Apple says that they should be scaled by the scaling */
632  /* factors in the transformation matrix (roughly, it's more complex) */
633  /* while MS says they should not. OpenType defines two bits in the */
634  /* composite flags array which can be used to disambiguate, but old */
635  /* fonts will not have them. */
636  /* */
637  /* http://www.microsoft.com/typography/otspec/glyf.htm */
638  /* http://fonts.apple.com/TTRefMan/RM06/Chap6glyf.html */
639  /* */
640 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED
641 
642 
643  /*************************************************************************/
644  /* */
645  /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */
646  /* support for Apple's distortable font technology (fvar, gvar, cvar, */
647  /* and avar tables). This has many similarities to Type 1 Multiple */
648  /* Masters support. */
649  /* */
650 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT
651 
652 
653  /*************************************************************************/
654  /* */
655  /* Define TT_CONFIG_OPTION_BDF if you want to include support for */
656  /* an embedded `BDF ' table within SFNT-based bitmap formats. */
657  /* */
658 #define TT_CONFIG_OPTION_BDF
659 
660 
661  /*************************************************************************/
662  /*************************************************************************/
663  /**** ****/
664  /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/
665  /**** ****/
666  /*************************************************************************/
667  /*************************************************************************/
668 
669 
670  /*************************************************************************/
671  /* */
672  /* T1_MAX_DICT_DEPTH is the maximal depth of nest dictionaries and */
673  /* arrays in the Type 1 stream (see t1load.c). A minimum of 4 is */
674  /* required. */
675  /* */
676 #define T1_MAX_DICT_DEPTH 5
677 
678 
679  /*************************************************************************/
680  /* */
681  /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */
682  /* calls during glyph loading. */
683  /* */
684 #define T1_MAX_SUBRS_CALLS 16
685 
686 
687  /*************************************************************************/
688  /* */
689  /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */
690  /* minimum of 16 is required. */
691  /* */
692  /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */
693  /* */
694 #define T1_MAX_CHARSTRINGS_OPERANDS 256
695 
696 
697  /*************************************************************************/
698  /* */
699  /* Define this configuration macro if you want to prevent the */
700  /* compilation of `t1afm', which is in charge of reading Type 1 AFM */
701  /* files into an existing face. Note that if set, the T1 driver will be */
702  /* unable to produce kerning distances. */
703  /* */
704 #undef T1_CONFIG_OPTION_NO_AFM
705 
706 
707  /*************************************************************************/
708  /* */
709  /* Define this configuration macro if you want to prevent the */
710  /* compilation of the Multiple Masters font support in the Type 1 */
711  /* driver. */
712  /* */
713 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT
714 
715 
716  /*************************************************************************/
717  /*************************************************************************/
718  /**** ****/
719  /**** A U T O F I T M O D U L E C O N F I G U R A T I O N ****/
720  /**** ****/
721  /*************************************************************************/
722  /*************************************************************************/
723 
724 
725  /*************************************************************************/
726  /* */
727  /* Compile autofit module with CJK (Chinese, Japanese, Korean) script */
728  /* support. */
729  /* */
730 #define AF_CONFIG_OPTION_CJK
731 
732  /*************************************************************************/
733  /* */
734  /* Compile autofit module with Indic script support. */
735  /* */
736 #define AF_CONFIG_OPTION_INDIC
737 
738  /*************************************************************************/
739  /* */
740  /* Compile autofit module with warp hinting. The idea of the warping */
741  /* code is to slightly scale and shift a glyph within a single dimension */
742  /* so that as much of its segments are aligned (more or less) on the */
743  /* grid. To find out the optimal scaling and shifting value, various */
744  /* parameter combinations are tried and scored. */
745  /* */
746  /* This experimental option is only active if the render mode is */
747  /* FT_RENDER_MODE_LIGHT. */
748  /* */
749 /* #define AF_CONFIG_OPTION_USE_WARPER */
750 
751  /* */
752 
753 
754  /*
755  * Define this variable if you want to keep the layout of internal
756  * structures that was used prior to FreeType 2.2. This also compiles in
757  * a few obsolete functions to avoid linking problems on typical Unix
758  * distributions.
759  *
760  * For embedded systems or building a new distribution from scratch, it
761  * is recommended to disable the macro since it reduces the library's code
762  * size and activates a few memory-saving optimizations as well.
763  */
764 #define FT_CONFIG_OPTION_OLD_INTERNALS
765 
766 
767  /*
768  * To detect legacy cache-lookup call from a rogue client (<= 2.1.7),
769  * we restrict the number of charmaps in a font. The current API of
770  * FTC_CMapCache_Lookup() takes cmap_index & charcode, but old API
771  * takes charcode only. To determine the passed value is for cmap_index
772  * or charcode, the possible cmap_index is restricted not to exceed
773  * the minimum possible charcode by a rogue client. It is also very
774  * unlikely that a rogue client is interested in Unicode values 0 to 15.
775  *
776  * NOTE: The original threshold was 4 deduced from popular number of
777  * cmap subtables in UCS-4 TrueType fonts, but now it is not
778  * irregular for OpenType fonts to have more than 4 subtables,
779  * because variation selector subtables are available for Apple
780  * and Microsoft platforms.
781  */
782 
783 #ifdef FT_CONFIG_OPTION_OLD_INTERNALS
784 #define FT_MAX_CHARMAP_CACHEABLE 15
785 #endif
786 
787 
788  /*
789  * This macro is defined if either unpatented or native TrueType
790  * hinting is requested by the definitions above.
791  */
792 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
793 #define TT_USE_BYTECODE_INTERPRETER
794 #undef TT_CONFIG_OPTION_UNPATENTED_HINTING
795 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING
796 #define TT_USE_BYTECODE_INTERPRETER
797 #endif
798 
799 FT_END_HEADER
800 
801 
802 #endif /* __FTOPTION_H__ */
803 
804 
805 /* END */
FT_END_HEADER
#define FT_END_HEADER
Definition: ftheader.h:54
FT_BEGIN_HEADER
#define FT_BEGIN_HEADER
Definition: ftheader.h:36