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ftoption.h
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1/***************************************************************************/
2/* */
3/* ftoption.h (for development) */
4/* */
5/* User-selectable configuration macros (specification only). */
6/* */
7/* Copyright 1996-2018 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
26FT_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 /* If you enable this configuration option, FreeType recognizes an */
81 /* environment variable called `FREETYPE_PROPERTIES', which can be used */
82 /* to control the various font drivers and modules. The controllable */
83 /* properties are listed in the section `Controlling FreeType Modules' */
84 /* in the reference's table of contents; currently there are properties */
85 /* for the auto-hinter (file `ftautoh.h'), CFF (file `ftcffdrv.h'), */
86 /* TrueType (file `ftttdrv.h'), and PCF (file `ftpcfdrv.h'). */
87 /* */
88 /* `FREETYPE_PROPERTIES' has the following syntax form (broken here into */
89 /* multiple lines for better readability). */
90 /* */
91 /* <optional whitespace> */
92 /* <module-name1> ':' */
93 /* <property-name1> '=' <property-value1> */
94 /* <whitespace> */
95 /* <module-name2> ':' */
96 /* <property-name2> '=' <property-value2> */
97 /* ... */
98 /* */
99 /* Example: */
100 /* */
101 /* FREETYPE_PROPERTIES=truetype:interpreter-version=35 \ */
102 /* cff:no-stem-darkening=1 \ */
103 /* autofitter:warping=1 */
104 /* */
105//#define FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES
106
107
108 /*************************************************************************/
109 /* */
110 /* Uncomment the line below if you want to activate LCD rendering */
111 /* technology similar to ClearType in this build of the library. This */
112 /* technology triples the resolution in the direction color subpixels. */
113 /* To mitigate color fringes inherent to this technology, you also need */
114 /* to explicitly set up LCD filtering. */
115 /* */
116 /* Note that this feature is covered by several Microsoft patents */
117 /* and should not be activated in any default build of the library. */
118 /* When this macro is not defined, FreeType offers alternative LCD */
119 /* rendering technology that produces excellent output without LCD */
120 /* filtering. */
121 /* */
122#define FT_CONFIG_OPTION_SUBPIXEL_RENDERING
123
124
125 /*************************************************************************/
126 /* */
127 /* Many compilers provide a non-ANSI 64-bit data type that can be used */
128 /* by FreeType to speed up some computations. However, this will create */
129 /* some problems when compiling the library in strict ANSI mode. */
130 /* */
131 /* For this reason, the use of 64-bit integers is normally disabled when */
132 /* the __STDC__ macro is defined. You can however disable this by */
133 /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here. */
134 /* */
135 /* For most compilers, this will only create compilation warnings when */
136 /* building the library. */
137 /* */
138 /* ObNote: The compiler-specific 64-bit integers are detected in the */
139 /* file `ftconfig.h' either statically or through the */
140 /* `configure' script on supported platforms. */
141 /* */
142#undef FT_CONFIG_OPTION_FORCE_INT64
143
144
145 /*************************************************************************/
146 /* */
147 /* If this macro is defined, do not try to use an assembler version of */
148 /* performance-critical functions (e.g. FT_MulFix). You should only do */
149 /* that to verify that the assembler function works properly, or to */
150 /* execute benchmark tests of the various implementations. */
151/* #define FT_CONFIG_OPTION_NO_ASSEMBLER */
152
153
154 /*************************************************************************/
155 /* */
156 /* If this macro is defined, try to use an inlined assembler version of */
157 /* the `FT_MulFix' function, which is a `hotspot' when loading and */
158 /* hinting glyphs, and which should be executed as fast as possible. */
159 /* */
160 /* Note that if your compiler or CPU is not supported, this will default */
161 /* to the standard and portable implementation found in `ftcalc.c'. */
162 /* */
163#define FT_CONFIG_OPTION_INLINE_MULFIX
164
165
166 /*************************************************************************/
167 /* */
168 /* LZW-compressed file support. */
169 /* */
170 /* FreeType now handles font files that have been compressed with the */
171 /* `compress' program. This is mostly used to parse many of the PCF */
172 /* files that come with various X11 distributions. The implementation */
173 /* uses NetBSD's `zopen' to partially uncompress the file on the fly */
174 /* (see src/lzw/ftgzip.c). */
175 /* */
176 /* Define this macro if you want to enable this `feature'. */
177 /* */
178#define FT_CONFIG_OPTION_USE_LZW
179
180
181 /*************************************************************************/
182 /* */
183 /* Gzip-compressed file support. */
184 /* */
185 /* FreeType now handles font files that have been compressed with the */
186 /* `gzip' program. This is mostly used to parse many of the PCF files */
187 /* that come with XFree86. The implementation uses `zlib' to */
188 /* partially uncompress the file on the fly (see src/gzip/ftgzip.c). */
189 /* */
190 /* Define this macro if you want to enable this `feature'. See also */
191 /* the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below. */
192 /* */
193#define FT_CONFIG_OPTION_USE_ZLIB
194
195
196 /*************************************************************************/
197 /* */
198 /* ZLib library selection */
199 /* */
200 /* This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined. */
201 /* It allows FreeType's `ftgzip' component to link to the system's */
202 /* installation of the ZLib library. This is useful on systems like */
203 /* Unix or VMS where it generally is already available. */
204 /* */
205 /* If you let it undefined, the component will use its own copy */
206 /* of the zlib sources instead. These have been modified to be */
207 /* included directly within the component and *not* export external */
208 /* function names. This allows you to link any program with FreeType */
209 /* _and_ ZLib without linking conflicts. */
210 /* */
211 /* Do not #undef this macro here since the build system might define */
212 /* it for certain configurations only. */
213 /* */
214/* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */
215
216
217 /*************************************************************************/
218 /* */
219 /* Bzip2-compressed file support. */
220 /* */
221 /* FreeType now handles font files that have been compressed with the */
222 /* `bzip2' program. This is mostly used to parse many of the PCF */
223 /* files that come with XFree86. The implementation uses `libbz2' to */
224 /* partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */
225 /* Contrary to gzip, bzip2 currently is not included and need to use */
226 /* the system available bzip2 implementation. */
227 /* */
228 /* Define this macro if you want to enable this `feature'. */
229 /* */
230#define FT_CONFIG_OPTION_USE_BZIP2
231
232
233 /*************************************************************************/
234 /* */
235 /* Define to disable the use of file stream functions and types, FILE, */
236 /* fopen() etc. Enables the use of smaller system libraries on embedded */
237 /* systems that have multiple system libraries, some with or without */
238 /* file stream support, in the cases where file stream support is not */
239 /* necessary such as memory loading of font files. */
240 /* */
241/* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */
242
243
244 /*************************************************************************/
245 /* */
246 /* PNG bitmap support. */
247 /* */
248 /* FreeType now handles loading color bitmap glyphs in the PNG format. */
249 /* This requires help from the external libpng library. Uncompressed */
250 /* color bitmaps do not need any external libraries and will be */
251 /* supported regardless of this configuration. */
252 /* */
253 /* Define this macro if you want to enable this `feature'. */
254 /* */
255#define FT_CONFIG_OPTION_USE_PNG
256
257
258 /*************************************************************************/
259 /* */
260 /* HarfBuzz support. */
261 /* */
262 /* FreeType uses the HarfBuzz library to improve auto-hinting of */
263 /* OpenType fonts. If available, many glyphs not directly addressable */
264 /* by a font's character map will be hinted also. */
265 /* */
266 /* Define this macro if you want to enable this `feature'. */
267 /* */
268#define FT_CONFIG_OPTION_USE_HARFBUZZ
269
270
271 /*************************************************************************/
272 /* */
273 /* Glyph Postscript Names handling */
274 /* */
275 /* By default, FreeType 2 is compiled with the `psnames' module. This */
276 /* module is in charge of converting a glyph name string into a */
277 /* Unicode value, or return a Macintosh standard glyph name for the */
278 /* use with the TrueType `post' table. */
279 /* */
280 /* Undefine this macro if you do not want `psnames' compiled in your */
281 /* build of FreeType. This has the following effects: */
282 /* */
283 /* - The TrueType driver will provide its own set of glyph names, */
284 /* if you build it to support postscript names in the TrueType */
285 /* `post' table, but will not synthesize a missing Unicode charmap. */
286 /* */
287 /* - The Type 1 driver will not be able to synthesize a Unicode */
288 /* charmap out of the glyphs found in the fonts. */
289 /* */
290 /* You would normally undefine this configuration macro when building */
291 /* a version of FreeType that doesn't contain a Type 1 or CFF driver. */
292 /* */
293#define FT_CONFIG_OPTION_POSTSCRIPT_NAMES
294
295
296 /*************************************************************************/
297 /* */
298 /* Postscript Names to Unicode Values support */
299 /* */
300 /* By default, FreeType 2 is built with the `PSNames' module compiled */
301 /* in. Among other things, the module is used to convert a glyph name */
302 /* into a Unicode value. This is especially useful in order to */
303 /* synthesize on the fly a Unicode charmap from the CFF/Type 1 driver */
304 /* through a big table named the `Adobe Glyph List' (AGL). */
305 /* */
306 /* Undefine this macro if you do not want the Adobe Glyph List */
307 /* compiled in your `PSNames' module. The Type 1 driver will not be */
308 /* able to synthesize a Unicode charmap out of the glyphs found in the */
309 /* fonts. */
310 /* */
311#define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST
312
313
314 /*************************************************************************/
315 /* */
316 /* Support for Mac fonts */
317 /* */
318 /* Define this macro if you want support for outline fonts in Mac */
319 /* format (mac dfont, mac resource, macbinary containing a mac */
320 /* resource) on non-Mac platforms. */
321 /* */
322 /* Note that the `FOND' resource isn't checked. */
323 /* */
324#define FT_CONFIG_OPTION_MAC_FONTS
325
326
327 /*************************************************************************/
328 /* */
329 /* Guessing methods to access embedded resource forks */
330 /* */
331 /* Enable extra Mac fonts support on non-Mac platforms (e.g. */
332 /* GNU/Linux). */
333 /* */
334 /* Resource forks which include fonts data are stored sometimes in */
335 /* locations which users or developers don't expected. In some cases, */
336 /* resource forks start with some offset from the head of a file. In */
337 /* other cases, the actual resource fork is stored in file different */
338 /* from what the user specifies. If this option is activated, */
339 /* FreeType tries to guess whether such offsets or different file */
340 /* names must be used. */
341 /* */
342 /* Note that normal, direct access of resource forks is controlled via */
343 /* the FT_CONFIG_OPTION_MAC_FONTS option. */
344 /* */
345#ifdef FT_CONFIG_OPTION_MAC_FONTS
346#define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK
347#endif
348
349
350 /*************************************************************************/
351 /* */
352 /* Allow the use of FT_Incremental_Interface to load typefaces that */
353 /* contain no glyph data, but supply it via a callback function. */
354 /* This is required by clients supporting document formats which */
355 /* supply font data incrementally as the document is parsed, such */
356 /* as the Ghostscript interpreter for the PostScript language. */
357 /* */
358#define FT_CONFIG_OPTION_INCREMENTAL
359
360
361 /*************************************************************************/
362 /* */
363 /* The size in bytes of the render pool used by the scan-line converter */
364 /* to do all of its work. */
365 /* */
366#define FT_RENDER_POOL_SIZE 16384L
367
368
369 /*************************************************************************/
370 /* */
371 /* FT_MAX_MODULES */
372 /* */
373 /* The maximum number of modules that can be registered in a single */
374 /* FreeType library object. 32 is the default. */
375 /* */
376#define FT_MAX_MODULES 32
377
378
379 /*************************************************************************/
380 /* */
381 /* Debug level */
382 /* */
383 /* FreeType can be compiled in debug or trace mode. In debug mode, */
384 /* errors are reported through the `ftdebug' component. In trace */
385 /* mode, additional messages are sent to the standard output during */
386 /* execution. */
387 /* */
388 /* Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. */
389 /* Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. */
390 /* */
391 /* Don't define any of these macros to compile in `release' mode! */
392 /* */
393 /* Do not #undef these macros here since the build system might define */
394 /* them for certain configurations only. */
395 /* */
396#define FT_DEBUG_LEVEL_ERROR
397#define FT_DEBUG_LEVEL_TRACE
398
399
400 /*************************************************************************/
401 /* */
402 /* Autofitter debugging */
403 /* */
404 /* If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to */
405 /* control the autofitter behaviour for debugging purposes with global */
406 /* boolean variables (consequently, you should *never* enable this */
407 /* while compiling in `release' mode): */
408 /* */
409 /* _af_debug_disable_horz_hints */
410 /* _af_debug_disable_vert_hints */
411 /* _af_debug_disable_blue_hints */
412 /* */
413 /* Additionally, the following functions provide dumps of various */
414 /* internal autofit structures to stdout (using `printf'): */
415 /* */
416 /* af_glyph_hints_dump_points */
417 /* af_glyph_hints_dump_segments */
418 /* af_glyph_hints_dump_edges */
419 /* af_glyph_hints_get_num_segments */
420 /* af_glyph_hints_get_segment_offset */
421 /* */
422 /* As an argument, they use another global variable: */
423 /* */
424 /* _af_debug_hints */
425 /* */
426 /* Please have a look at the `ftgrid' demo program to see how those */
427 /* variables and macros should be used. */
428 /* */
429 /* Do not #undef these macros here since the build system might define */
430 /* them for certain configurations only. */
431 /* */
432#define FT_DEBUG_AUTOFIT
433
434
435 /*************************************************************************/
436 /* */
437 /* Memory Debugging */
438 /* */
439 /* FreeType now comes with an integrated memory debugger that is */
440 /* capable of detecting simple errors like memory leaks or double */
441 /* deletes. To compile it within your build of the library, you */
442 /* should define FT_DEBUG_MEMORY here. */
443 /* */
444 /* Note that the memory debugger is only activated at runtime when */
445 /* when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */
446 /* */
447 /* Do not #undef this macro here since the build system might define */
448 /* it for certain configurations only. */
449 /* */
450#define FT_DEBUG_MEMORY
451
452
453 /*************************************************************************/
454 /* */
455 /* Module errors */
456 /* */
457 /* If this macro is set (which is _not_ the default), the higher byte */
458 /* of an error code gives the module in which the error has occurred, */
459 /* while the lower byte is the real error code. */
460 /* */
461 /* Setting this macro makes sense for debugging purposes only, since */
462 /* it would break source compatibility of certain programs that use */
463 /* FreeType 2. */
464 /* */
465 /* More details can be found in the files ftmoderr.h and fterrors.h. */
466 /* */
467#undef FT_CONFIG_OPTION_USE_MODULE_ERRORS
468
469
470 /*************************************************************************/
471 /* */
472 /* Position Independent Code */
473 /* */
474 /* If this macro is set (which is _not_ the default), FreeType2 will */
475 /* avoid creating constants that require address fixups. Instead the */
476 /* constants will be moved into a struct and additional intialization */
477 /* code will be used. */
478 /* */
479 /* Setting this macro is needed for systems that prohibit address */
480 /* fixups, such as BREW. [Note that standard compilers like gcc or */
481 /* clang handle PIC generation automatically; you don't have to set */
482 /* FT_CONFIG_OPTION_PIC, which is only necessary for very special */
483 /* compilers.] */
484 /* */
485 /* Note that FT_CONFIG_OPTION_PIC support is not available for all */
486 /* modules (see `modules.cfg' for a complete list). For building with */
487 /* FT_CONFIG_OPTION_PIC support, do the following. */
488 /* */
489 /* 0. Clone the repository. */
490 /* 1. Define FT_CONFIG_OPTION_PIC. */
491 /* 2. Remove all subdirectories in `src' that don't have */
492 /* FT_CONFIG_OPTION_PIC support. */
493 /* 3. Comment out the corresponding modules in `modules.cfg'. */
494 /* 4. Compile. */
495 /* */
496/* #define FT_CONFIG_OPTION_PIC */
497
498
499 /*************************************************************************/
500 /*************************************************************************/
501 /**** ****/
502 /**** S F N T D R I V E R C O N F I G U R A T I O N ****/
503 /**** ****/
504 /*************************************************************************/
505 /*************************************************************************/
506
507
508 /*************************************************************************/
509 /* */
510 /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support */
511 /* embedded bitmaps in all formats using the SFNT module (namely */
512 /* TrueType & OpenType). */
513 /* */
514#define TT_CONFIG_OPTION_EMBEDDED_BITMAPS
515
516
517 /*************************************************************************/
518 /* */
519 /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to */
520 /* load and enumerate the glyph Postscript names in a TrueType or */
521 /* OpenType file. */
522 /* */
523 /* Note that when you do not compile the `PSNames' module by undefining */
524 /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will */
525 /* contain additional code used to read the PS Names table from a font. */
526 /* */
527 /* (By default, the module uses `PSNames' to extract glyph names.) */
528 /* */
529#define TT_CONFIG_OPTION_POSTSCRIPT_NAMES
530
531
532 /*************************************************************************/
533 /* */
534 /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to */
535 /* access the internal name table in a SFNT-based format like TrueType */
536 /* or OpenType. The name table contains various strings used to */
537 /* describe the font, like family name, copyright, version, etc. It */
538 /* does not contain any glyph name though. */
539 /* */
540 /* Accessing SFNT names is done through the functions declared in */
541 /* `ftsnames.h'. */
542 /* */
543#define TT_CONFIG_OPTION_SFNT_NAMES
544
545
546 /*************************************************************************/
547 /* */
548 /* TrueType CMap support */
549 /* */
550 /* Here you can fine-tune which TrueType CMap table format shall be */
551 /* supported. */
552#define TT_CONFIG_CMAP_FORMAT_0
553#define TT_CONFIG_CMAP_FORMAT_2
554#define TT_CONFIG_CMAP_FORMAT_4
555#define TT_CONFIG_CMAP_FORMAT_6
556#define TT_CONFIG_CMAP_FORMAT_8
557#define TT_CONFIG_CMAP_FORMAT_10
558#define TT_CONFIG_CMAP_FORMAT_12
559#define TT_CONFIG_CMAP_FORMAT_13
560#define TT_CONFIG_CMAP_FORMAT_14
561
562
563 /*************************************************************************/
564 /*************************************************************************/
565 /**** ****/
566 /**** 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 ****/
567 /**** ****/
568 /*************************************************************************/
569 /*************************************************************************/
570
571 /*************************************************************************/
572 /* */
573 /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile */
574 /* a bytecode interpreter in the TrueType driver. */
575 /* */
576 /* By undefining this, you will only compile the code necessary to load */
577 /* TrueType glyphs without hinting. */
578 /* */
579 /* Do not #undef this macro here, since the build system might */
580 /* define it for certain configurations only. */
581 /* */
582#define TT_CONFIG_OPTION_BYTECODE_INTERPRETER
583
584
585 /*************************************************************************/
586 /* */
587 /* Define TT_CONFIG_OPTION_SUBPIXEL_HINTING if you want to compile */
588 /* subpixel hinting support into the TrueType driver. This modifies the */
589 /* TrueType hinting mechanism when anything but FT_RENDER_MODE_MONO is */
590 /* requested. */
591 /* */
592 /* In particular, it modifies the bytecode interpreter to interpret (or */
593 /* not) instructions in a certain way so that all TrueType fonts look */
594 /* like they do in a Windows ClearType (DirectWrite) environment. See */
595 /* [1] for a technical overview on what this means. See `ttinterp.h' */
596 /* for more details on the LEAN option. */
597 /* */
598 /* There are three options. */
599 /* */
600 /* 1. This option is associated with the `Infinality' moniker. */
601 /* Contributed by an individual nicknamed Infinality with the goal of */
602 /* making TrueType fonts render better than on Windows. A high */
603 /* amount of configurability and flexibility, down to rules for */
604 /* single glyphs in fonts, but also very slow. Its experimental and */
605 /* slow nature and the original developer losing interest meant that */
606 /* this option was never enabled in default builds. */
607 /* */
608 /* 2. The new default mode for the TrueType driver. The Infinality code */
609 /* base was stripped to the bare minimum and all configurability */
610 /* removed in the name of speed and simplicity. The configurability */
611 /* was mainly aimed at legacy fonts like Arial, Times New Roman, or */
612 /* Courier. Legacy fonts are fonts that modify vertical stems to */
613 /* achieve clean black-and-white bitmaps. The new mode focuses on */
614 /* applying a minimal set of rules to all fonts indiscriminately so */
615 /* that modern and web fonts render well while legacy fonts render */
616 /* okay. */
617 /* */
618 /* 3. Compile both. */
619 /* */
620 /* By undefining these, you get rendering behavior like on Windows */
621 /* without ClearType, i.e., Windows XP without ClearType enabled and */
622 /* Win9x (interpreter version v35). Or not, depending on how much */
623 /* hinting blood and testing tears the font designer put into a given */
624 /* font. If you define one or both subpixel hinting options, you can */
625 /* switch between between v35 and the ones you define. */
626 /* */
627 /* This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be */
628 /* defined. */
629 /* */
630 /* [1] https://www.microsoft.com/typography/cleartype/truetypecleartype.aspx */
631 /* */
632/* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING 1 */
633/* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING 2 */
634#define TT_CONFIG_OPTION_SUBPIXEL_HINTING ( 1 | 2 )
635
636
637 /*************************************************************************/
638 /* */
639 /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the */
640 /* TrueType glyph loader to use Apple's definition of how to handle */
641 /* component offsets in composite glyphs. */
642 /* */
643 /* Apple and MS disagree on the default behavior of component offsets */
644 /* in composites. Apple says that they should be scaled by the scaling */
645 /* factors in the transformation matrix (roughly, it's more complex) */
646 /* while MS says they should not. OpenType defines two bits in the */
647 /* composite flags array which can be used to disambiguate, but old */
648 /* fonts will not have them. */
649 /* */
650 /* https://www.microsoft.com/typography/otspec/glyf.htm */
651 /* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6glyf.html */
652 /* */
653#undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED
654
655
656 /*************************************************************************/
657 /* */
658 /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include */
659 /* support for Apple's distortable font technology (fvar, gvar, cvar, */
660 /* and avar tables). This has many similarities to Type 1 Multiple */
661 /* Masters support. */
662 /* */
663#define TT_CONFIG_OPTION_GX_VAR_SUPPORT
664
665
666 /*************************************************************************/
667 /* */
668 /* Define TT_CONFIG_OPTION_BDF if you want to include support for */
669 /* an embedded `BDF ' table within SFNT-based bitmap formats. */
670 /* */
671#define TT_CONFIG_OPTION_BDF
672
673
674 /*************************************************************************/
675 /* */
676 /* Option TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES controls the maximum */
677 /* number of bytecode instructions executed for a single run of the */
678 /* bytecode interpreter, needed to prevent infinite loops. You don't */
679 /* want to change this except for very special situations (e.g., making */
680 /* a library fuzzer spend less time to handle broken fonts). */
681 /* */
682 /* It is not expected that this value is ever modified by a configuring */
683 /* script; instead, it gets surrounded with #ifndef ... #endif so that */
684 /* the value can be set as a preprocessor option on the compiler's */
685 /* command line. */
686 /* */
687#ifndef TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES
688#define TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES 1000000L
689#endif
690
691
692 /*************************************************************************/
693 /*************************************************************************/
694 /**** ****/
695 /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/
696 /**** ****/
697 /*************************************************************************/
698 /*************************************************************************/
699
700
701 /*************************************************************************/
702 /* */
703 /* T1_MAX_DICT_DEPTH is the maximum depth of nest dictionaries and */
704 /* arrays in the Type 1 stream (see t1load.c). A minimum of 4 is */
705 /* required. */
706 /* */
707#define T1_MAX_DICT_DEPTH 5
708
709
710 /*************************************************************************/
711 /* */
712 /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine */
713 /* calls during glyph loading. */
714 /* */
715#define T1_MAX_SUBRS_CALLS 16
716
717
718 /*************************************************************************/
719 /* */
720 /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A */
721 /* minimum of 16 is required. */
722 /* */
723 /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */
724 /* */
725#define T1_MAX_CHARSTRINGS_OPERANDS 256
726
727
728 /*************************************************************************/
729 /* */
730 /* Define this configuration macro if you want to prevent the */
731 /* compilation of `t1afm', which is in charge of reading Type 1 AFM */
732 /* files into an existing face. Note that if set, the T1 driver will be */
733 /* unable to produce kerning distances. */
734 /* */
735#undef T1_CONFIG_OPTION_NO_AFM
736
737
738 /*************************************************************************/
739 /* */
740 /* Define this configuration macro if you want to prevent the */
741 /* compilation of the Multiple Masters font support in the Type 1 */
742 /* driver. */
743 /* */
744#undef T1_CONFIG_OPTION_NO_MM_SUPPORT
745
746
747 /*************************************************************************/
748 /* */
749 /* T1_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe Type 1 */
750 /* engine gets compiled into FreeType. If defined, it is possible to */
751 /* switch between the two engines using the `hinting-engine' property of */
752 /* the type1 driver module. */
753 /* */
754//#define T1_CONFIG_OPTION_OLD_ENGINE
755
756
757 /*************************************************************************/
758 /*************************************************************************/
759 /**** ****/
760 /**** C F F D R I V E R C O N F I G U R A T I O N ****/
761 /**** ****/
762 /*************************************************************************/
763 /*************************************************************************/
764
765
766 /*************************************************************************/
767 /* */
768 /* Using CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4} it is */
769 /* possible to set up the default values of the four control points that */
770 /* define the stem darkening behaviour of the (new) CFF engine. For */
771 /* more details please read the documentation of the */
772 /* `darkening-parameters' property of the cff driver module (file */
773 /* `ftcffdrv.h'), which allows the control at run-time. */
774 /* */
775 /* Do *not* undefine these macros! */
776 /* */
777#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 500
778#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 400
779
780#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 1000
781#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 275
782
783#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 1667
784#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 275
785
786#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 2333
787#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 0
788
789
790 /*************************************************************************/
791 /* */
792 /* CFF_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe CFF */
793 /* engine gets compiled into FreeType. If defined, it is possible to */
794 /* switch between the two engines using the `hinting-engine' property of */
795 /* the cff driver module. */
796 /* */
797#define CFF_CONFIG_OPTION_OLD_ENGINE
798
799
800 /*************************************************************************/
801 /*************************************************************************/
802 /**** ****/
803 /**** P C F D R I V E R C O N F I G U R A T I O N ****/
804 /**** ****/
805 /*************************************************************************/
806 /*************************************************************************/
807
808
809 /*************************************************************************/
810 /* */
811 /* There are many PCF fonts just called `Fixed' which look completely */
812 /* different, and which have nothing to do with each other. When */
813 /* selecting `Fixed' in KDE or Gnome one gets results that appear rather */
814 /* random, the style changes often if one changes the size and one */
815 /* cannot select some fonts at all. This option makes the PCF module */
816 /* prepend the foundry name (plus a space) to the family name. */
817 /* */
818 /* We also check whether we have `wide' characters; all put together, we */
819 /* get family names like `Sony Fixed' or `Misc Fixed Wide'. */
820 /* */
821 /* If this option is activated, it can be controlled with the */
822 /* `no-long-family-names' property of the pcf driver module. */
823 /* */
824#define PCF_CONFIG_OPTION_LONG_FAMILY_NAMES
825
826
827 /*************************************************************************/
828 /*************************************************************************/
829 /**** ****/
830 /**** 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 ****/
831 /**** ****/
832 /*************************************************************************/
833 /*************************************************************************/
834
835
836 /*************************************************************************/
837 /* */
838 /* Compile autofit module with CJK (Chinese, Japanese, Korean) script */
839 /* support. */
840 /* */
841#define AF_CONFIG_OPTION_CJK
842
843 /*************************************************************************/
844 /* */
845 /* Compile autofit module with Indic script support. */
846 /* */
847#define AF_CONFIG_OPTION_INDIC
848
849 /*************************************************************************/
850 /* */
851 /* Compile autofit module with warp hinting. The idea of the warping */
852 /* code is to slightly scale and shift a glyph within a single dimension */
853 /* so that as much of its segments are aligned (more or less) on the */
854 /* grid. To find out the optimal scaling and shifting value, various */
855 /* parameter combinations are tried and scored. */
856 /* */
857 /* This experimental option is active only if the rendering mode is */
858 /* FT_RENDER_MODE_LIGHT; you can switch warping on and off with the */
859 /* `warping' property of the auto-hinter (see file `ftautoh.h' for more */
860 /* information; by default it is switched off). */
861 /* */
862#define AF_CONFIG_OPTION_USE_WARPER
863
864 /* */
865
866
867 /*
868 * This macro is obsolete. Support has been removed in FreeType
869 * version 2.5.
870 */
871/* #define FT_CONFIG_OPTION_OLD_INTERNALS */
872
873
874 /*
875 * This macro is defined if native TrueType hinting is requested by the
876 * definitions above.
877 */
878#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
879#define TT_USE_BYTECODE_INTERPRETER
880
881#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING
882#if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 1
883#define TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY
884#endif
885
886#if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 2
887#define TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL
888#endif
889#endif
890#endif
891
892
893 /*
894 * Check CFF darkening parameters. The checks are the same as in function
895 * `cff_property_set' in file `cffdrivr.c'.
896 */
897#if CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 < 0 || \
898 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 < 0 || \
899 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 < 0 || \
900 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 < 0 || \
901 \
902 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 < 0 || \
903 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 < 0 || \
904 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 < 0 || \
905 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 < 0 || \
906 \
907 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 > \
908 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 || \
909 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 > \
910 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 || \
911 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 > \
912 CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 || \
913 \
914 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 > 500 || \
915 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 > 500 || \
916 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 > 500 || \
917 CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 > 500
918#error "Invalid CFF darkening parameters!"
919#endif
920
921FT_END_HEADER
922
923
924#endif /* FTOPTION_H_ */
925
926
927/* END */
FT_END_HEADER
#define FT_END_HEADER
Definition: ftheader.h:54
FT_BEGIN_HEADER
#define FT_BEGIN_HEADER
Definition: ftheader.h:36