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[reactos.git] / reactos / lib / 3rdparty / freetype / include / config / ftoption.h
1 /***************************************************************************/
2 /* */
3 /* ftoption.h */
4 /* */
5 /* User-selectable configuration macros (specification only). */
6 /* */
7 /* Copyright 1996-2013 by */
8 /* David Turner, Robert Wilhelm, and Werner Lemberg. */
9 /* */
10 /* This file is part of the FreeType project, and may only be used, */
11 /* modified, and distributed under the terms of the FreeType project */
12 /* license, LICENSE.TXT. By continuing to use, modify, or distribute */
13 /* this file you indicate that you have read the license and */
14 /* understand and accept it fully. */
15 /* */
16 /***************************************************************************/
17
18
19 #ifndef __FTOPTION_H__
20 #define __FTOPTION_H__
21
22
23 #include <ft2build.h>
24
25
26 FT_BEGIN_HEADER
27
28 /*************************************************************************/
29 /* */
30 /* USER-SELECTABLE CONFIGURATION MACROS */
31 /* */
32 /* This file contains the default configuration macro definitions for */
33 /* a standard build of the FreeType library. There are three ways to */
34 /* use this file to build project-specific versions of the library: */
35 /* */
36 /* - You can modify this file by hand, but this is not recommended in */
37 /* cases where you would like to build several versions of the */
38 /* library from a single source directory. */
39 /* */
40 /* - You can put a copy of this file in your build directory, more */
41 /* precisely in `$BUILD/config/ftoption.h', where `$BUILD' is the */
42 /* name of a directory that is included _before_ the FreeType include */
43 /* path during compilation. */
44 /* */
45 /* The default FreeType Makefiles and Jamfiles use the build */
46 /* directory `builds/<system>' by default, but you can easily change */
47 /* that for your own projects. */
48 /* */
49 /* - Copy the file <ft2build.h> to `$BUILD/ft2build.h' and modify it */
50 /* slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to */
51 /* locate this file during the build. For example, */
52 /* */
53 /* #define FT_CONFIG_OPTIONS_H <myftoptions.h> */
54 /* #include <config/ftheader.h> */
55 /* */
56 /* will use `$BUILD/myftoptions.h' instead of this file for macro */
57 /* definitions. */
58 /* */
59 /* Note also that you can similarly pre-define the macro */
60 /* FT_CONFIG_MODULES_H used to locate the file listing of the modules */
61 /* that are statically linked to the library at compile time. By */
62 /* default, this file is <config/ftmodule.h>. */
63 /* */
64 /* We highly recommend using the third method whenever possible. */
65 /* */
66 /*************************************************************************/
67
68
69 /*************************************************************************/
70 /*************************************************************************/
71 /**** ****/
72 /**** G E N E R A L F R E E T Y P E 2 C O N F I G U R A T I O N ****/
73 /**** ****/
74 /*************************************************************************/
75 /*************************************************************************/
76
77
78 /*************************************************************************/
79 /* */
80 /* Uncomment the line below if you want to activate sub-pixel rendering */
81 /* (a.k.a. LCD rendering, or ClearType) in this build of the library. */
82 /* */
83 /* Note that this feature is covered by several Microsoft patents */
84 /* and should not be activated in any default build of the library. */
85 /* */
86 /* This macro has no impact on the FreeType API, only on its */
87 /* _implementation_. For example, using FT_RENDER_MODE_LCD when calling */
88 /* FT_Render_Glyph still generates a bitmap that is 3 times wider than */
89 /* the original size in case this macro isn't defined; however, each */
90 /* triplet of subpixels has R=G=B. */
91 /* */
92 /* This is done to allow FreeType clients to run unmodified, forcing */
93 /* them to display normal gray-level anti-aliased glyphs. */
94 /* */
95 /* #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING */
96
97
98 /*************************************************************************/
99 /* */
100 /* Many compilers provide a non-ANSI 64-bit data type that can be used */
101 /* by FreeType to speed up some computations. However, this will create */
102 /* some problems when compiling the library in strict ANSI mode. */
103 /* */
104 /* For this reason, the use of 64-bit integers is normally disabled when */
105 /* the __STDC__ macro is defined. You can however disable this by */
106 /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here. */
107 /* */
108 /* For most compilers, this will only create compilation warnings when */
109 /* building the library. */
110 /* */
111 /* ObNote: The compiler-specific 64-bit integers are detected in the */
112 /* file `ftconfig.h' either statically or through the */
113 /* `configure' script on supported platforms. */
114 /* */
115 #undef FT_CONFIG_OPTION_FORCE_INT64
116
117
118 /*************************************************************************/
119 /* */
120 /* If this macro is defined, do not try to use an assembler version of */
121 /* performance-critical functions (e.g. FT_MulFix). You should only do */
122 /* that to verify that the assembler function works properly, or to */
123 /* execute benchmark tests of the various implementations. */
124 /* #define FT_CONFIG_OPTION_NO_ASSEMBLER */
125
126
127 /*************************************************************************/
128 /* */
129 /* If this macro is defined, try to use an inlined assembler version of */
130 /* the `FT_MulFix' function, which is a `hotspot' when loading and */
131 /* hinting glyphs, and which should be executed as fast as possible. */
132 /* */
133 /* Note that if your compiler or CPU is not supported, this will default */
134 /* to the standard and portable implementation found in `ftcalc.c'. */
135 /* */
136 #define FT_CONFIG_OPTION_INLINE_MULFIX
137
138
139 /*************************************************************************/
140 /* */
141 /* LZW-compressed file support. */
142 /* */
143 /* FreeType now handles font files that have been compressed with the */
144 /* `compress' program. This is mostly used to parse many of the PCF */
145 /* files that come with various X11 distributions. The implementation */
146 /* uses NetBSD's `zopen' to partially uncompress the file on the fly */
147 /* (see src/lzw/ftgzip.c). */
148 /* */
149 /* Define this macro if you want to enable this `feature'. */
150 /* */
151 #define FT_CONFIG_OPTION_USE_LZW
152
153
154 /*************************************************************************/
155 /* */
156 /* Gzip-compressed file support. */
157 /* */
158 /* FreeType now handles font files that have been compressed with the */
159 /* `gzip' program. This is mostly used to parse many of the PCF files */
160 /* that come with XFree86. The implementation uses `zlib' to */
161 /* partially uncompress the file on the fly (see src/gzip/ftgzip.c). */
162 /* */
163 /* Define this macro if you want to enable this `feature'. See also */
164 /* the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below. */
165 /* */
166 #define FT_CONFIG_OPTION_USE_ZLIB
167
168
169 /*************************************************************************/
170 /* */
171 /* ZLib library selection */
172 /* */
173 /* This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined. */
174 /* It allows FreeType's `ftgzip' component to link to the system's */
175 /* installation of the ZLib library. This is useful on systems like */
176 /* Unix or VMS where it generally is already available. */
177 /* */
178 /* If you let it undefined, the component will use its own copy */
179 /* of the zlib sources instead. These have been modified to be */
180 /* included directly within the component and *not* export external */
181 /* function names. This allows you to link any program with FreeType */
182 /* _and_ ZLib without linking conflicts. */
183 /* */
184 /* Do not #undef this macro here since the build system might define */
185 /* it for certain configurations only. */
186 /* */
187 /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */
188
189
190 /*************************************************************************/
191 /* */
192 /* Bzip2-compressed file support. */
193 /* */
194 /* FreeType now handles font files that have been compressed with the */
195 /* `bzip2' program. This is mostly used to parse many of the PCF */
196 /* files that come with XFree86. The implementation uses `libbz2' to */
197 /* partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */
198 /* Contrary to gzip, bzip2 currently is not included and need to use */
199 /* the system available bzip2 implementation. */
200 /* */
201 /* Define this macro if you want to enable this `feature'. */
202 /* */
203 /* #define FT_CONFIG_OPTION_USE_BZIP2 */
204
205
206 /*************************************************************************/
207 /* */
208 /* Define to disable the use of file stream functions and types, FILE, */
209 /* fopen() etc. Enables the use of smaller system libraries on embedded */
210 /* systems that have multiple system libraries, some with or without */
211 /* file stream support, in the cases where file stream support is not */
212 /* necessary such as memory loading of font files. */
213 /* */
214 /* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */
215
216
217 /*************************************************************************/
218 /* */
219 /* PNG bitmap support. */
220 /* */
221 /* FreeType now handles loading color bitmap glyphs in the PNG format. */
222 /* This requires help from the external libpng library. Uncompressed */
223 /* color bitmaps do not need any external libraries and will be */
224 /* supported regardless of this configuration. */
225 /* */
226 /* Define this macro if you want to enable this `feature'. */
227 /* */
228 /* #define FT_CONFIG_OPTION_USE_PNG */
229
230
231 /*************************************************************************/
232 /* */
233 /* HarfBuzz support. */
234 /* */
235 /* FreeType uses the HarfBuzz library to improve auto-hinting of */
236 /* OpenType fonts. If available, many glyphs not directly addressable */
237 /* by a font's character map will be hinted also. */
238 /* */
239 /* Define this macro if you want to enable this `feature'. */
240 /* */
241 /* #define FT_CONFIG_OPTION_USE_HARFBUZZ */
242
243
244 /*************************************************************************/
245 /* */
246 /* DLL export compilation */
247 /* */
248 /* When compiling FreeType as a DLL, some systems/compilers need a */
249 /* special keyword in front OR after the return type of function */
250 /* declarations. */
251 /* */
252 /* Two macros are used within the FreeType source code to define */
253 /* exported library functions: FT_EXPORT and FT_EXPORT_DEF. */
254 /* */
255 /* FT_EXPORT( return_type ) */
256 /* */
257 /* is used in a function declaration, as in */
258 /* */
259 /* FT_EXPORT( FT_Error ) */
260 /* FT_Init_FreeType( FT_Library* alibrary ); */
261 /* */
262 /* */
263 /* FT_EXPORT_DEF( return_type ) */
264 /* */
265 /* is used in a function definition, as in */
266 /* */
267 /* FT_EXPORT_DEF( FT_Error ) */
268 /* FT_Init_FreeType( FT_Library* alibrary ) */
269 /* { */
270 /* ... some code ... */
271 /* return FT_Err_Ok; */
272 /* } */
273 /* */
274 /* You can provide your own implementation of FT_EXPORT and */
275 /* FT_EXPORT_DEF here if you want. If you leave them undefined, they */
276 /* will be later automatically defined as `extern return_type' to */
277 /* allow normal compilation. */
278 /* */
279 /* Do not #undef these macros here since the build system might define */
280 /* them for certain configurations only. */
281 /* */
282 /* #define FT_EXPORT(x) extern x */
283 /* #define FT_EXPORT_DEF(x) x */
284
285
286 /*************************************************************************/
287 /* */
288 /* Glyph Postscript Names handling */
289 /* */
290 /* By default, FreeType 2 is compiled with the `psnames' module. This */
291 /* module is in charge of converting a glyph name string into a */
292 /* Unicode value, or return a Macintosh standard glyph name for the */
293 /* use with the TrueType `post' table. */
294 /* */
295 /* Undefine this macro if you do not want `psnames' compiled in your */
296 /* build of FreeType. This has the following effects: */
297 /* */
298 /* - The TrueType driver will provide its own set of glyph names, */
299 /* if you build it to support postscript names in the TrueType */
300 /* `post' table. */
301 /* */
302 /* - The Type 1 driver will not be able to synthesize a Unicode */
303 /* charmap out of the glyphs found in the fonts. */
304 /* */
305 /* You would normally undefine this configuration macro when building */
306 /* a version of FreeType that doesn't contain a Type 1 or CFF driver. */
307 /* */
308 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES
309
310
311 /*************************************************************************/
312 /* */
313 /* Postscript Names to Unicode Values support */
314 /* */
315 /* By default, FreeType 2 is built with the `PSNames' module compiled */
316 /* in. Among other things, the module is used to convert a glyph name */
317 /* into a Unicode value. This is especially useful in order to */
318 /* synthesize on the fly a Unicode charmap from the CFF/Type 1 driver */
319 /* through a big table named the `Adobe Glyph List' (AGL). */
320 /* */
321 /* Undefine this macro if you do not want the Adobe Glyph List */
322 /* compiled in your `PSNames' module. The Type 1 driver will not be */
323 /* able to synthesize a Unicode charmap out of the glyphs found in the */
324 /* fonts. */
325 /* */
326 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST
327
328
329 /*************************************************************************/
330 /* */
331 /* Support for Mac fonts */
332 /* */
333 /* Define this macro if you want support for outline fonts in Mac */
334 /* format (mac dfont, mac resource, macbinary containing a mac */
335 /* resource) on non-Mac platforms. */
336 /* */
337 /* Note that the `FOND' resource isn't checked. */
338 /* */
339 #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 /* This must be greater than 4KByte if you use FreeType to rasterize */
382 /* glyphs; otherwise, you may set it to zero to avoid unnecessary */
383 /* allocation of the render pool. */
384 /* */
385 #define FT_RENDER_POOL_SIZE 16384L
386
387
388 /*************************************************************************/
389 /* */
390 /* FT_MAX_MODULES */
391 /* */
392 /* The maximum number of modules that can be registered in a single */
393 /* FreeType library object. 32 is the default. */
394 /* */
395 #define FT_MAX_MODULES 32
396
397
398 /*************************************************************************/
399 /* */
400 /* Debug level */
401 /* */
402 /* FreeType can be compiled in debug or trace mode. In debug mode, */
403 /* errors are reported through the `ftdebug' component. In trace */
404 /* mode, additional messages are sent to the standard output during */
405 /* execution. */
406 /* */
407 /* Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. */
408 /* Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. */
409 /* */
410 /* Don't define any of these macros to compile in `release' mode! */
411 /* */
412 /* Do not #undef these macros here since the build system might define */
413 /* them for certain configurations only. */
414 /* */
415 /* #define FT_DEBUG_LEVEL_ERROR */
416 /* #define FT_DEBUG_LEVEL_TRACE */
417
418
419 /*************************************************************************/
420 /* */
421 /* Autofitter debugging */
422 /* */
423 /* If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to */
424 /* control the autofitter behaviour for debugging purposes with global */
425 /* boolean variables (consequently, you should *never* enable this */
426 /* while compiling in `release' mode): */
427 /* */
428 /* _af_debug_disable_horz_hints */
429 /* _af_debug_disable_vert_hints */
430 /* _af_debug_disable_blue_hints */
431 /* */
432 /* Additionally, the following functions provide dumps of various */
433 /* internal autofit structures to stdout (using `printf'): */
434 /* */
435 /* af_glyph_hints_dump_points */
436 /* af_glyph_hints_dump_segments */
437 /* af_glyph_hints_dump_edges */
438 /* */
439 /* As an argument, they use another global variable: */
440 /* */
441 /* _af_debug_hints */
442 /* */
443 /* Please have a look at the `ftgrid' demo program to see how those */
444 /* variables and macros should be used. */
445 /* */
446 /* Do not #undef these macros here since the build system might define */
447 /* them for certain configurations only. */
448 /* */
449 /* #define FT_DEBUG_AUTOFIT */
450
451
452 /*************************************************************************/
453 /* */
454 /* Memory Debugging */
455 /* */
456 /* FreeType now comes with an integrated memory debugger that is */
457 /* capable of detecting simple errors like memory leaks or double */
458 /* deletes. To compile it within your build of the library, you */
459 /* should define FT_DEBUG_MEMORY here. */
460 /* */
461 /* Note that the memory debugger is only activated at runtime when */
462 /* when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */
463 /* */
464 /* Do not #undef this macro here since the build system might define */
465 /* it for certain configurations only. */
466 /* */
467 /* #define FT_DEBUG_MEMORY */
468
469
470 /*************************************************************************/
471 /* */
472 /* Module errors */
473 /* */
474 /* If this macro is set (which is _not_ the default), the higher byte */
475 /* of an error code gives the module in which the error has occurred, */
476 /* while the lower byte is the real error code. */
477 /* */
478 /* Setting this macro makes sense for debugging purposes only, since */
479 /* it would break source compatibility of certain programs that use */
480 /* FreeType 2. */
481 /* */
482 /* More details can be found in the files ftmoderr.h and fterrors.h. */
483 /* */
484 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS
485
486
487 /*************************************************************************/
488 /* */
489 /* Position Independent Code */
490 /* */
491 /* If this macro is set (which is _not_ the default), FreeType2 will */
492 /* avoid creating constants that require address fixups. Instead the */
493 /* constants will be moved into a struct and additional intialization */
494 /* code will be used. */
495 /* */
496 /* Setting this macro is needed for systems that prohibit address */
497 /* fixups, such as BREW. */
498 /* */
499 /* #define FT_CONFIG_OPTION_PIC */
500
501
502 /*************************************************************************/
503 /*************************************************************************/
504 /**** ****/
505 /**** S F N T D R I V E R C O N F I G U R A T I O N ****/
506 /**** ****/
507 /*************************************************************************/
508 /*************************************************************************/
509
510
511 /*************************************************************************/
512 /* */
513 /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support */
514 /* embedded bitmaps in all formats using the SFNT module (namely */
515 /* TrueType & OpenType). */
516 /* */
517 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS
518
519
520 /*************************************************************************/
521 /* */
522 /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to */
523 /* load and enumerate the glyph Postscript names in a TrueType or */
524 /* OpenType file. */
525 /* */
526 /* Note that when you do not compile the `PSNames' module by undefining */
527 /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will */
528 /* contain additional code used to read the PS Names table from a font. */
529 /* */
530 /* (By default, the module uses `PSNames' to extract glyph names.) */
531 /* */
532 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES
533
534
535 /*************************************************************************/
536 /* */
537 /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to */
538 /* access the internal name table in a SFNT-based format like TrueType */
539 /* or OpenType. The name table contains various strings used to */
540 /* describe the font, like family name, copyright, version, etc. It */
541 /* does not contain any glyph name though. */
542 /* */
543 /* Accessing SFNT names is done through the functions declared in */
544 /* `ftsnames.h'. */
545 /* */
546 #define TT_CONFIG_OPTION_SFNT_NAMES
547
548
549 /*************************************************************************/
550 /* */
551 /* TrueType CMap support */
552 /* */
553 /* Here you can fine-tune which TrueType CMap table format shall be */
554 /* supported. */
555 #define TT_CONFIG_CMAP_FORMAT_0
556 #define TT_CONFIG_CMAP_FORMAT_2
557 #define TT_CONFIG_CMAP_FORMAT_4
558 #define TT_CONFIG_CMAP_FORMAT_6
559 #define TT_CONFIG_CMAP_FORMAT_8
560 #define TT_CONFIG_CMAP_FORMAT_10
561 #define TT_CONFIG_CMAP_FORMAT_12
562 #define TT_CONFIG_CMAP_FORMAT_13
563 #define TT_CONFIG_CMAP_FORMAT_14
564
565
566 /*************************************************************************/
567 /*************************************************************************/
568 /**** ****/
569 /**** T R U E T Y P E D R I V E R C O N F I G U R A T I O N ****/
570 /**** ****/
571 /*************************************************************************/
572 /*************************************************************************/
573
574 /*************************************************************************/
575 /* */
576 /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */
577 /* a bytecode interpreter in the TrueType driver. */
578 /* */
579 /* By undefining this, you will only compile the code necessary to load */
580 /* TrueType glyphs without hinting. */
581 /* */
582 /* Do not #undef this macro here, since the build system might */
583 /* define it for certain configurations only. */
584 /* */
585 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
586
587
588 /*************************************************************************/
589 /* */
590 /* Define TT_CONFIG_OPTION_SUBPIXEL_HINTING if you want to compile */
591 /* EXPERIMENTAL subpixel hinting support into the TrueType driver. This */
592 /* replaces the native TrueType hinting mechanism when anything but */
593 /* FT_RENDER_MODE_MONO is requested. */
594 /* */
595 /* Enabling this causes the TrueType driver to ignore instructions under */
596 /* certain conditions. This is done in accordance with the guide here, */
597 /* with some minor differences: */
598 /* */
599 /* http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx */
600 /* */
601 /* By undefining this, you only compile the code necessary to hint */
602 /* TrueType glyphs with native TT hinting. */
603 /* */
604 /* This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be */
605 /* defined. */
606 /* */
607 /* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING */
608
609
610 /*************************************************************************/
611 /* */
612 /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */
613 /* of the TrueType bytecode interpreter is used that doesn't implement */
614 /* any of the patented opcodes and algorithms. The patents related to */
615 /* TrueType hinting have expired worldwide since May 2010; this option */
616 /* is now deprecated. */
617 /* */
618 /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* */
619 /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, */
620 /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */
621 /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */
622 /* */
623 /* This macro is only useful for a small number of font files (mostly */
624 /* for Asian scripts) that require bytecode interpretation to properly */
625 /* load glyphs. For all other fonts, this produces unpleasant results, */
626 /* thus the unpatented interpreter is never used to load glyphs from */
627 /* TrueType fonts unless one of the following two options is used. */
628 /* */
629 /* - The unpatented interpreter is explicitly activated by the user */
630 /* through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag */
631 /* when opening the FT_Face. */
632 /* */
633 /* - FreeType detects that the FT_Face corresponds to one of the */
634 /* `trick' fonts (e.g., `Mingliu') it knows about. The font engine */
635 /* contains a hard-coded list of font names and other matching */
636 /* parameters (see function `tt_face_init' in file */
637 /* `src/truetype/ttobjs.c'). */
638 /* */
639 /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */
640 /* */
641 /* { */
642 /* FT_Parameter parameter; */
643 /* FT_Open_Args open_args; */
644 /* */
645 /* */
646 /* parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING; */
647 /* */
648 /* open_args.flags = FT_OPEN_PATHNAME | FT_OPEN_PARAMS; */
649 /* open_args.pathname = my_font_pathname; */
650 /* open_args.num_params = 1; */
651 /* open_args.params = &parameter; */
652 /* */
653 /* error = FT_Open_Face( library, &open_args, index, &face ); */
654 /* ... */
655 /* } */
656 /* */
657 /* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */
658
659
660 /*************************************************************************/
661 /* */
662 /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType */
663 /* bytecode interpreter with a huge switch statement, rather than a call */
664 /* table. This results in smaller and faster code for a number of */
665 /* architectures. */
666 /* */
667 /* Note however that on some compiler/processor combinations, undefining */
668 /* this macro will generate faster, though larger, code. */
669 /* */
670 #define TT_CONFIG_OPTION_INTERPRETER_SWITCH
671
672
673 /*************************************************************************/
674 /* */
675 /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the */
676 /* TrueType glyph loader to use Apple's definition of how to handle */
677 /* component offsets in composite glyphs. */
678 /* */
679 /* Apple and MS disagree on the default behavior of component offsets */
680 /* in composites. Apple says that they should be scaled by the scaling */
681 /* factors in the transformation matrix (roughly, it's more complex) */
682 /* while MS says they should not. OpenType defines two bits in the */
683 /* composite flags array which can be used to disambiguate, but old */
684 /* fonts will not have them. */
685 /* */
686 /* http://www.microsoft.com/typography/otspec/glyf.htm */
687 /* http://fonts.apple.com/TTRefMan/RM06/Chap6glyf.html */
688 /* */
689 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED
690
691
692 /*************************************************************************/
693 /* */
694 /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */
695 /* support for Apple's distortable font technology (fvar, gvar, cvar, */
696 /* and avar tables). This has many similarities to Type 1 Multiple */
697 /* Masters support. */
698 /* */
699 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT
700
701
702 /*************************************************************************/
703 /* */
704 /* Define TT_CONFIG_OPTION_BDF if you want to include support for */
705 /* an embedded `BDF ' table within SFNT-based bitmap formats. */
706 /* */
707 #define TT_CONFIG_OPTION_BDF
708
709
710 /*************************************************************************/
711 /*************************************************************************/
712 /**** ****/
713 /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/
714 /**** ****/
715 /*************************************************************************/
716 /*************************************************************************/
717
718
719 /*************************************************************************/
720 /* */
721 /* T1_MAX_DICT_DEPTH is the maximum depth of nest dictionaries and */
722 /* arrays in the Type 1 stream (see t1load.c). A minimum of 4 is */
723 /* required. */
724 /* */
725 #define T1_MAX_DICT_DEPTH 5
726
727
728 /*************************************************************************/
729 /* */
730 /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */
731 /* calls during glyph loading. */
732 /* */
733 #define T1_MAX_SUBRS_CALLS 16
734
735
736 /*************************************************************************/
737 /* */
738 /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */
739 /* minimum of 16 is required. */
740 /* */
741 /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */
742 /* */
743 #define T1_MAX_CHARSTRINGS_OPERANDS 256
744
745
746 /*************************************************************************/
747 /* */
748 /* Define this configuration macro if you want to prevent the */
749 /* compilation of `t1afm', which is in charge of reading Type 1 AFM */
750 /* files into an existing face. Note that if set, the T1 driver will be */
751 /* unable to produce kerning distances. */
752 /* */
753 #undef T1_CONFIG_OPTION_NO_AFM
754
755
756 /*************************************************************************/
757 /* */
758 /* Define this configuration macro if you want to prevent the */
759 /* compilation of the Multiple Masters font support in the Type 1 */
760 /* driver. */
761 /* */
762 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT
763
764
765 /*************************************************************************/
766 /*************************************************************************/
767 /**** ****/
768 /**** C F F D R I V E R C O N F I G U R A T I O N ****/
769 /**** ****/
770 /*************************************************************************/
771 /*************************************************************************/
772
773
774 /*************************************************************************/
775 /* */
776 /* CFF_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe CFF */
777 /* engine gets compiled into FreeType. If defined, it is possible to */
778 /* switch between the two engines using the `hinting-engine' property of */
779 /* the cff driver module. */
780 /* */
781 /* #define CFF_CONFIG_OPTION_OLD_ENGINE */
782
783
784 /*************************************************************************/
785 /*************************************************************************/
786 /**** ****/
787 /**** 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 ****/
788 /**** ****/
789 /*************************************************************************/
790 /*************************************************************************/
791
792
793 /*************************************************************************/
794 /* */
795 /* Compile autofit module with CJK (Chinese, Japanese, Korean) script */
796 /* support. */
797 /* */
798 #define AF_CONFIG_OPTION_CJK
799
800 /*************************************************************************/
801 /* */
802 /* Compile autofit module with Indic script support. */
803 /* */
804 #define AF_CONFIG_OPTION_INDIC
805
806 /*************************************************************************/
807 /* */
808 /* Compile autofit module with warp hinting. The idea of the warping */
809 /* code is to slightly scale and shift a glyph within a single dimension */
810 /* so that as much of its segments are aligned (more or less) on the */
811 /* grid. To find out the optimal scaling and shifting value, various */
812 /* parameter combinations are tried and scored. */
813 /* */
814 /* This experimental option is only active if the render mode is */
815 /* FT_RENDER_MODE_LIGHT. */
816 /* */
817 /* #define AF_CONFIG_OPTION_USE_WARPER */
818
819 /* */
820
821
822 /*
823 * This macro is obsolete. Support has been removed in FreeType
824 * version 2.5.
825 */
826 /* #define FT_CONFIG_OPTION_OLD_INTERNALS */
827
828
829 /*
830 * This macro is defined if either unpatented or native TrueType
831 * hinting is requested by the definitions above.
832 */
833 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
834 #define TT_USE_BYTECODE_INTERPRETER
835 #undef TT_CONFIG_OPTION_UNPATENTED_HINTING
836 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING
837 #define TT_USE_BYTECODE_INTERPRETER
838 #endif
839
840 FT_END_HEADER
841
842
843 #endif /* __FTOPTION_H__ */
844
845
846 /* END */
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