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Side by Side Diff: third_party/freetype/config/ftoption.h

Issue 19625006: Update freetype to version 2.5.0.1 when building it from source. (Closed) Base URL: https://skia.googlecode.com/svn/trunk
Patch Set: Created 7 years, 4 months ago
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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 `$BUILD/freetype/config/ftoption.h', where `$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 /* DLL export compilation */
234 /* */
235 /* When compiling FreeType as a DLL, some systems/compilers need a */
236 /* special keyword in front OR after the return type of function */
237 /* declarations. */
238 /* */
239 /* Two macros are used within the FreeType source code to define */
240 /* exported library functions: FT_EXPORT and FT_EXPORT_DEF. */
241 /* */
242 /* FT_EXPORT( return_type ) */
243 /* */
244 /* is used in a function declaration, as in */
245 /* */
246 /* FT_EXPORT( FT_Error ) */
247 /* FT_Init_FreeType( FT_Library* alibrary ); */
248 /* */
249 /* */
250 /* FT_EXPORT_DEF( return_type ) */
251 /* */
252 /* is used in a function definition, as in */
253 /* */
254 /* FT_EXPORT_DEF( FT_Error ) */
255 /* FT_Init_FreeType( FT_Library* alibrary ) */
256 /* { */
257 /* ... some code ... */
258 /* return FT_Err_Ok; */
259 /* } */
260 /* */
261 /* You can provide your own implementation of FT_EXPORT and */
262 /* FT_EXPORT_DEF here if you want. If you leave them undefined, they */
263 /* will be later automatically defined as `extern return_type' to */
264 /* allow normal compilation. */
265 /* */
266 /* Do not #undef these macros here since the build system might define */
267 /* them for certain configurations only. */
268 /* */
269 /* #define FT_EXPORT(x) extern x */
270 /* #define FT_EXPORT_DEF(x) x */
271
272
273 /*************************************************************************/
274 /* */
275 /* Glyph Postscript Names handling */
276 /* */
277 /* By default, FreeType 2 is compiled with the `psnames' module. This */
278 /* module is in charge of converting a glyph name string into a */
279 /* Unicode value, or return a Macintosh standard glyph name for the */
280 /* use with the TrueType `post' table. */
281 /* */
282 /* Undefine this macro if you do not want `psnames' compiled in your */
283 /* build of FreeType. This has the following effects: */
284 /* */
285 /* - The TrueType driver will provide its own set of glyph names, */
286 /* if you build it to support postscript names in the TrueType */
287 /* `post' table. */
288 /* */
289 /* - The Type 1 driver will not be able to synthesize a Unicode */
290 /* charmap out of the glyphs found in the fonts. */
291 /* */
292 /* You would normally undefine this configuration macro when building */
293 /* a version of FreeType that doesn't contain a Type 1 or CFF driver. */
294 /* */
295 #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES
296
297
298 /*************************************************************************/
299 /* */
300 /* Postscript Names to Unicode Values support */
301 /* */
302 /* By default, FreeType 2 is built with the `PSNames' module compiled */
303 /* in. Among other things, the module is used to convert a glyph name */
304 /* into a Unicode value. This is especially useful in order to */
305 /* synthesize on the fly a Unicode charmap from the CFF/Type 1 driver */
306 /* through a big table named the `Adobe Glyph List' (AGL). */
307 /* */
308 /* Undefine this macro if you do not want the Adobe Glyph List */
309 /* compiled in your `PSNames' module. The Type 1 driver will not be */
310 /* able to synthesize a Unicode charmap out of the glyphs found in the */
311 /* fonts. */
312 /* */
313 #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST
314
315
316 /*************************************************************************/
317 /* */
318 /* Support for Mac fonts */
319 /* */
320 /* Define this macro if you want support for outline fonts in Mac */
321 /* format (mac dfont, mac resource, macbinary containing a mac */
322 /* resource) on non-Mac platforms. */
323 /* */
324 /* Note that the `FOND' resource isn't checked. */
325 /* */
326 #define FT_CONFIG_OPTION_MAC_FONTS
327
328
329 /*************************************************************************/
330 /* */
331 /* Guessing methods to access embedded resource forks */
332 /* */
333 /* Enable extra Mac fonts support on non-Mac platforms (e.g. */
334 /* GNU/Linux). */
335 /* */
336 /* Resource forks which include fonts data are stored sometimes in */
337 /* locations which users or developers don't expected. In some cases, */
338 /* resource forks start with some offset from the head of a file. In */
339 /* other cases, the actual resource fork is stored in file different */
340 /* from what the user specifies. If this option is activated, */
341 /* FreeType tries to guess whether such offsets or different file */
342 /* names must be used. */
343 /* */
344 /* Note that normal, direct access of resource forks is controlled via */
345 /* the FT_CONFIG_OPTION_MAC_FONTS option. */
346 /* */
347 #ifdef FT_CONFIG_OPTION_MAC_FONTS
348 #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK
349 #endif
350
351
352 /*************************************************************************/
353 /* */
354 /* Allow the use of FT_Incremental_Interface to load typefaces that */
355 /* contain no glyph data, but supply it via a callback function. */
356 /* This is required by clients supporting document formats which */
357 /* supply font data incrementally as the document is parsed, such */
358 /* as the Ghostscript interpreter for the PostScript language. */
359 /* */
360 #define FT_CONFIG_OPTION_INCREMENTAL
361
362
363 /*************************************************************************/
364 /* */
365 /* The size in bytes of the render pool used by the scan-line converter */
366 /* to do all of its work. */
367 /* */
368 /* This must be greater than 4KByte if you use FreeType to rasterize */
369 /* glyphs; otherwise, you may set it to zero to avoid unnecessary */
370 /* allocation of the render pool. */
371 /* */
372 #define FT_RENDER_POOL_SIZE 16384L
373
374
375 /*************************************************************************/
376 /* */
377 /* FT_MAX_MODULES */
378 /* */
379 /* The maximum number of modules that can be registered in a single */
380 /* FreeType library object. 32 is the default. */
381 /* */
382 #define FT_MAX_MODULES 32
383
384
385 /*************************************************************************/
386 /* */
387 /* Debug level */
388 /* */
389 /* FreeType can be compiled in debug or trace mode. In debug mode, */
390 /* errors are reported through the `ftdebug' component. In trace */
391 /* mode, additional messages are sent to the standard output during */
392 /* execution. */
393 /* */
394 /* Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. */
395 /* Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. */
396 /* */
397 /* Don't define any of these macros to compile in `release' mode! */
398 /* */
399 /* Do not #undef these macros here since the build system might define */
400 /* them for certain configurations only. */
401 /* */
402 /* #define FT_DEBUG_LEVEL_ERROR */
403 /* #define FT_DEBUG_LEVEL_TRACE */
404
405
406 /*************************************************************************/
407 /* */
408 /* Autofitter debugging */
409 /* */
410 /* If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to */
411 /* control the autofitter behaviour for debugging purposes with global */
412 /* boolean variables (consequently, you should *never* enable this */
413 /* while compiling in `release' mode): */
414 /* */
415 /* _af_debug_disable_horz_hints */
416 /* _af_debug_disable_vert_hints */
417 /* _af_debug_disable_blue_hints */
418 /* */
419 /* Additionally, the following functions provide dumps of various */
420 /* internal autofit structures to stdout (using `printf'): */
421 /* */
422 /* af_glyph_hints_dump_points */
423 /* af_glyph_hints_dump_segments */
424 /* af_glyph_hints_dump_edges */
425 /* */
426 /* As an argument, they use another global variable: */
427 /* */
428 /* _af_debug_hints */
429 /* */
430 /* Please have a look at the `ftgrid' demo program to see how those */
431 /* variables and macros should be used. */
432 /* */
433 /* Do not #undef these macros here since the build system might define */
434 /* them for certain configurations only. */
435 /* */
436 /* #define FT_DEBUG_AUTOFIT */
437
438
439 /*************************************************************************/
440 /* */
441 /* Memory Debugging */
442 /* */
443 /* FreeType now comes with an integrated memory debugger that is */
444 /* capable of detecting simple errors like memory leaks or double */
445 /* deletes. To compile it within your build of the library, you */
446 /* should define FT_DEBUG_MEMORY here. */
447 /* */
448 /* Note that the memory debugger is only activated at runtime when */
449 /* when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */
450 /* */
451 /* Do not #undef this macro here since the build system might define */
452 /* it for certain configurations only. */
453 /* */
454 /* #define FT_DEBUG_MEMORY */
455
456
457 /*************************************************************************/
458 /* */
459 /* Module errors */
460 /* */
461 /* If this macro is set (which is _not_ the default), the higher byte */
462 /* of an error code gives the module in which the error has occurred, */
463 /* while the lower byte is the real error code. */
464 /* */
465 /* Setting this macro makes sense for debugging purposes only, since */
466 /* it would break source compatibility of certain programs that use */
467 /* FreeType 2. */
468 /* */
469 /* More details can be found in the files ftmoderr.h and fterrors.h. */
470 /* */
471 #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS
472
473
474 /*************************************************************************/
475 /* */
476 /* Position Independent Code */
477 /* */
478 /* If this macro is set (which is _not_ the default), FreeType2 will */
479 /* avoid creating constants that require address fixups. Instead the */
480 /* constants will be moved into a struct and additional intialization */
481 /* code will be used. */
482 /* */
483 /* Setting this macro is needed for systems that prohibit address */
484 /* fixups, such as BREW. */
485 /* */
486 /* #define FT_CONFIG_OPTION_PIC */
487
488
489 /*************************************************************************/
490 /*************************************************************************/
491 /**** ****/
492 /**** S F N T D R I V E R C O N F I G U R A T I O N ****/
493 /**** ****/
494 /*************************************************************************/
495 /*************************************************************************/
496
497
498 /*************************************************************************/
499 /* */
500 /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support */
501 /* embedded bitmaps in all formats using the SFNT module (namely */
502 /* TrueType & OpenType). */
503 /* */
504 #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS
505
506
507 /*************************************************************************/
508 /* */
509 /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to */
510 /* load and enumerate the glyph Postscript names in a TrueType or */
511 /* OpenType file. */
512 /* */
513 /* Note that when you do not compile the `PSNames' module by undefining */
514 /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will */
515 /* contain additional code used to read the PS Names table from a font. */
516 /* */
517 /* (By default, the module uses `PSNames' to extract glyph names.) */
518 /* */
519 #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES
520
521
522 /*************************************************************************/
523 /* */
524 /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to */
525 /* access the internal name table in a SFNT-based format like TrueType */
526 /* or OpenType. The name table contains various strings used to */
527 /* describe the font, like family name, copyright, version, etc. It */
528 /* does not contain any glyph name though. */
529 /* */
530 /* Accessing SFNT names is done through the functions declared in */
531 /* `freetype/ftsnames.h'. */
532 /* */
533 #define TT_CONFIG_OPTION_SFNT_NAMES
534
535
536 /*************************************************************************/
537 /* */
538 /* TrueType CMap support */
539 /* */
540 /* Here you can fine-tune which TrueType CMap table format shall be */
541 /* supported. */
542 #define TT_CONFIG_CMAP_FORMAT_0
543 #define TT_CONFIG_CMAP_FORMAT_2
544 #define TT_CONFIG_CMAP_FORMAT_4
545 #define TT_CONFIG_CMAP_FORMAT_6
546 #define TT_CONFIG_CMAP_FORMAT_8
547 #define TT_CONFIG_CMAP_FORMAT_10
548 #define TT_CONFIG_CMAP_FORMAT_12
549 #define TT_CONFIG_CMAP_FORMAT_13
550 #define TT_CONFIG_CMAP_FORMAT_14
551
552
553 /*************************************************************************/
554 /*************************************************************************/
555 /**** ****/
556 /**** 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 ****/
557 /**** ****/
558 /*************************************************************************/
559 /*************************************************************************/
560
561 /*************************************************************************/
562 /* */
563 /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */
564 /* a bytecode interpreter in the TrueType driver. */
565 /* */
566 /* By undefining this, you will only compile the code necessary to load */
567 /* TrueType glyphs without hinting. */
568 /* */
569 /* Do not #undef this macro here, since the build system might */
570 /* define it for certain configurations only. */
571 /* */
572 #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
573
574
575 /*************************************************************************/
576 /* */
577 /* Define TT_CONFIG_OPTION_SUBPIXEL_HINTING if you want to compile */
578 /* EXPERIMENTAL subpixel hinting support into the TrueType driver. This */
579 /* replaces the native TrueType hinting mechanism when anything but */
580 /* FT_RENDER_MODE_MONO is requested. */
581 /* */
582 /* Enabling this causes the TrueType driver to ignore instructions under */
583 /* certain conditions. This is done in accordance with the guide here, */
584 /* with some minor differences: */
585 /* */
586 /* http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx */
587 /* */
588 /* By undefining this, you only compile the code necessary to hint */
589 /* TrueType glyphs with native TT hinting. */
590 /* */
591 /* This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be */
592 /* defined. */
593 /* */
594 /* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING */
595
596
597 /*************************************************************************/
598 /* */
599 /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */
600 /* of the TrueType bytecode interpreter is used that doesn't implement */
601 /* any of the patented opcodes and algorithms. The patents related to */
602 /* TrueType hinting have expired worldwide since May 2010; this option */
603 /* is now deprecated. */
604 /* */
605 /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* */
606 /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, */
607 /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */
608 /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */
609 /* */
610 /* This macro is only useful for a small number of font files (mostly */
611 /* for Asian scripts) that require bytecode interpretation to properly */
612 /* load glyphs. For all other fonts, this produces unpleasant results, */
613 /* thus the unpatented interpreter is never used to load glyphs from */
614 /* TrueType fonts unless one of the following two options is used. */
615 /* */
616 /* - The unpatented interpreter is explicitly activated by the user */
617 /* through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag */
618 /* when opening the FT_Face. */
619 /* */
620 /* - FreeType detects that the FT_Face corresponds to one of the */
621 /* `trick' fonts (e.g., `Mingliu') it knows about. The font engine */
622 /* contains a hard-coded list of font names and other matching */
623 /* parameters (see function `tt_face_init' in file */
624 /* `src/truetype/ttobjs.c'). */
625 /* */
626 /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */
627 /* */
628 /* { */
629 /* FT_Parameter parameter; */
630 /* FT_Open_Args open_args; */
631 /* */
632 /* */
633 /* parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING; */
634 /* */
635 /* open_args.flags = FT_OPEN_PATHNAME | FT_OPEN_PARAMS; */
636 /* open_args.pathname = my_font_pathname; */
637 /* open_args.num_params = 1; */
638 /* open_args.params = &parameter; */
639 /* */
640 /* error = FT_Open_Face( library, &open_args, index, &face ); */
641 /* ... */
642 /* } */
643 /* */
644 /* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */
645
646
647 /*************************************************************************/
648 /* */
649 /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType */
650 /* bytecode interpreter with a huge switch statement, rather than a call */
651 /* table. This results in smaller and faster code for a number of */
652 /* architectures. */
653 /* */
654 /* Note however that on some compiler/processor combinations, undefining */
655 /* this macro will generate faster, though larger, code. */
656 /* */
657 #define TT_CONFIG_OPTION_INTERPRETER_SWITCH
658
659
660 /*************************************************************************/
661 /* */
662 /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the */
663 /* TrueType glyph loader to use Apple's definition of how to handle */
664 /* component offsets in composite glyphs. */
665 /* */
666 /* Apple and MS disagree on the default behavior of component offsets */
667 /* in composites. Apple says that they should be scaled by the scaling */
668 /* factors in the transformation matrix (roughly, it's more complex) */
669 /* while MS says they should not. OpenType defines two bits in the */
670 /* composite flags array which can be used to disambiguate, but old */
671 /* fonts will not have them. */
672 /* */
673 /* http://www.microsoft.com/typography/otspec/glyf.htm */
674 /* http://fonts.apple.com/TTRefMan/RM06/Chap6glyf.html */
675 /* */
676 #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED
677
678
679 /*************************************************************************/
680 /* */
681 /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */
682 /* support for Apple's distortable font technology (fvar, gvar, cvar, */
683 /* and avar tables). This has many similarities to Type 1 Multiple */
684 /* Masters support. */
685 /* */
686 #define TT_CONFIG_OPTION_GX_VAR_SUPPORT
687
688
689 /*************************************************************************/
690 /* */
691 /* Define TT_CONFIG_OPTION_BDF if you want to include support for */
692 /* an embedded `BDF ' table within SFNT-based bitmap formats. */
693 /* */
694 #define TT_CONFIG_OPTION_BDF
695
696
697 /*************************************************************************/
698 /*************************************************************************/
699 /**** ****/
700 /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/
701 /**** ****/
702 /*************************************************************************/
703 /*************************************************************************/
704
705
706 /*************************************************************************/
707 /* */
708 /* T1_MAX_DICT_DEPTH is the maximum depth of nest dictionaries and */
709 /* arrays in the Type 1 stream (see t1load.c). A minimum of 4 is */
710 /* required. */
711 /* */
712 #define T1_MAX_DICT_DEPTH 5
713
714
715 /*************************************************************************/
716 /* */
717 /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */
718 /* calls during glyph loading. */
719 /* */
720 #define T1_MAX_SUBRS_CALLS 16
721
722
723 /*************************************************************************/
724 /* */
725 /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */
726 /* minimum of 16 is required. */
727 /* */
728 /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */
729 /* */
730 #define T1_MAX_CHARSTRINGS_OPERANDS 256
731
732
733 /*************************************************************************/
734 /* */
735 /* Define this configuration macro if you want to prevent the */
736 /* compilation of `t1afm', which is in charge of reading Type 1 AFM */
737 /* files into an existing face. Note that if set, the T1 driver will be */
738 /* unable to produce kerning distances. */
739 /* */
740 #undef T1_CONFIG_OPTION_NO_AFM
741
742
743 /*************************************************************************/
744 /* */
745 /* Define this configuration macro if you want to prevent the */
746 /* compilation of the Multiple Masters font support in the Type 1 */
747 /* driver. */
748 /* */
749 #undef T1_CONFIG_OPTION_NO_MM_SUPPORT
750
751
752 /*************************************************************************/
753 /*************************************************************************/
754 /**** ****/
755 /**** C F F D R I V E R C O N F I G U R A T I O N ****/
756 /**** ****/
757 /*************************************************************************/
758 /*************************************************************************/
759
760
761 /*************************************************************************/
762 /* */
763 /* CFF_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe CFF */
764 /* engine gets compiled into FreeType. If defined, it is possible to */
765 /* switch between the two engines using the `hinting-engine' property of */
766 /* the cff driver module. */
767 /* */
768 /* #define CFF_CONFIG_OPTION_OLD_ENGINE */
769
770
771 /*************************************************************************/
772 /*************************************************************************/
773 /**** ****/
774 /**** 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 ****/
775 /**** ****/
776 /*************************************************************************/
777 /*************************************************************************/
778
779
780 /*************************************************************************/
781 /* */
782 /* Compile autofit module with CJK (Chinese, Japanese, Korean) script */
783 /* support. */
784 /* */
785 #define AF_CONFIG_OPTION_CJK
786
787 /*************************************************************************/
788 /* */
789 /* Compile autofit module with Indic script support. */
790 /* */
791 #define AF_CONFIG_OPTION_INDIC
792
793 /*************************************************************************/
794 /* */
795 /* Compile autofit module with warp hinting. The idea of the warping */
796 /* code is to slightly scale and shift a glyph within a single dimension */
797 /* so that as much of its segments are aligned (more or less) on the */
798 /* grid. To find out the optimal scaling and shifting value, various */
799 /* parameter combinations are tried and scored. */
800 /* */
801 /* This experimental option is only active if the render mode is */
802 /* FT_RENDER_MODE_LIGHT. */
803 /* */
804 /* #define AF_CONFIG_OPTION_USE_WARPER */
805
806 /* */
807
808
809 /*
810 * This macro is obsolete. Support has been removed in FreeType
811 * version 2.5.
812 */
813 /* #define FT_CONFIG_OPTION_OLD_INTERNALS */
814
815
816 /*
817 * This macro is defined if either unpatented or native TrueType
818 * hinting is requested by the definitions above.
819 */
820 #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
821 #define TT_USE_BYTECODE_INTERPRETER
822 #undef TT_CONFIG_OPTION_UNPATENTED_HINTING
823 #elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING
824 #define TT_USE_BYTECODE_INTERPRETER
825 #endif
826
827 FT_END_HEADER
828
829
830 #endif /* __FTOPTION_H__ */
831
832
833 /* END */
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