diff options
Diffstat (limited to 'src/3rdparty/freetype/include/freetype/config/ftoption.h')
| -rw-r--r-- | src/3rdparty/freetype/include/freetype/config/ftoption.h | 341 |
1 files changed, 216 insertions, 125 deletions
diff --git a/src/3rdparty/freetype/include/freetype/config/ftoption.h b/src/3rdparty/freetype/include/freetype/config/ftoption.h index 4970945d15..4bcab2af5c 100644 --- a/src/3rdparty/freetype/include/freetype/config/ftoption.h +++ b/src/3rdparty/freetype/include/freetype/config/ftoption.h @@ -4,7 +4,7 @@ /* */ /* User-selectable configuration macros (specification only). */ /* */ -/* Copyright 1996-2015 by */ +/* Copyright 1996-2018 by */ /* David Turner, Robert Wilhelm, and Werner Lemberg. */ /* */ /* This file is part of the FreeType project, and may only be used, */ @@ -16,8 +16,8 @@ /***************************************************************************/ -#ifndef __FTOPTION_H__ -#define __FTOPTION_H__ +#ifndef FTOPTION_H_ +#define FTOPTION_H_ #include <ft2build.h> @@ -75,22 +75,52 @@ FT_BEGIN_HEADER /*************************************************************************/ + /*#***********************************************************************/ + /* */ + /* If you enable this configuration option, FreeType recognizes an */ + /* environment variable called `FREETYPE_PROPERTIES', which can be used */ + /* to control the various font drivers and modules. The controllable */ + /* properties are listed in the section @properties. */ + /* */ + /* You have to undefine this configuration option on platforms that lack */ + /* the concept of environment variables (and thus don't have the */ + /* `getenv' function), for example Windows CE. */ + /* */ + /* `FREETYPE_PROPERTIES' has the following syntax form (broken here into */ + /* multiple lines for better readability). */ + /* */ + /* { */ + /* <optional whitespace> */ + /* <module-name1> ':' */ + /* <property-name1> '=' <property-value1> */ + /* <whitespace> */ + /* <module-name2> ':' */ + /* <property-name2> '=' <property-value2> */ + /* ... */ + /* } */ + /* */ + /* Example: */ + /* */ + /* FREETYPE_PROPERTIES=truetype:interpreter-version=35 \ */ + /* cff:no-stem-darkening=1 \ */ + /* autofitter:warping=1 */ + /* */ +#define FT_CONFIG_OPTION_ENVIRONMENT_PROPERTIES + + /*************************************************************************/ /* */ - /* Uncomment the line below if you want to activate sub-pixel rendering */ - /* (a.k.a. LCD rendering, or ClearType) in this build of the library. */ + /* Uncomment the line below if you want to activate LCD rendering */ + /* technology similar to ClearType in this build of the library. This */ + /* technology triples the resolution in the direction color subpixels. */ + /* To mitigate color fringes inherent to this technology, you also need */ + /* to explicitly set up LCD filtering. */ /* */ /* Note that this feature is covered by several Microsoft patents */ /* and should not be activated in any default build of the library. */ - /* */ - /* This macro has no impact on the FreeType API, only on its */ - /* _implementation_. For example, using FT_RENDER_MODE_LCD when calling */ - /* FT_Render_Glyph still generates a bitmap that is 3 times wider than */ - /* the original size in case this macro isn't defined; however, each */ - /* triplet of subpixels has R=G=B. */ - /* */ - /* This is done to allow FreeType clients to run unmodified, forcing */ - /* them to display normal gray-level anti-aliased glyphs. */ + /* When this macro is not defined, FreeType offers alternative LCD */ + /* rendering technology that produces excellent output without LCD */ + /* filtering. */ /* */ /* #define FT_CONFIG_OPTION_SUBPIXEL_RENDERING */ @@ -184,6 +214,10 @@ FT_BEGIN_HEADER /* Do not #undef this macro here since the build system might define */ /* it for certain configurations only. */ /* */ + /* If you use a build system like cmake or the `configure' script, */ + /* options set by those programs have precendence, overwriting the */ + /* value here with the configured one. */ + /* */ /* #define FT_CONFIG_OPTION_SYSTEM_ZLIB */ @@ -200,6 +234,10 @@ FT_BEGIN_HEADER /* */ /* Define this macro if you want to enable this `feature'. */ /* */ + /* If you use a build system like cmake or the `configure' script, */ + /* options set by those programs have precendence, overwriting the */ + /* value here with the configured one. */ + /* */ /* #define FT_CONFIG_OPTION_USE_BZIP2 */ @@ -225,6 +263,10 @@ FT_BEGIN_HEADER /* */ /* Define this macro if you want to enable this `feature'. */ /* */ + /* If you use a build system like cmake or the `configure' script, */ + /* options set by those programs have precendence, overwriting the */ + /* value here with the configured one. */ + /* */ /* #define FT_CONFIG_OPTION_USE_PNG */ @@ -238,49 +280,11 @@ FT_BEGIN_HEADER /* */ /* Define this macro if you want to enable this `feature'. */ /* */ -/* #define FT_CONFIG_OPTION_USE_HARFBUZZ */ - - - /*************************************************************************/ - /* */ - /* DLL export compilation */ - /* */ - /* When compiling FreeType as a DLL, some systems/compilers need a */ - /* special keyword in front OR after the return type of function */ - /* declarations. */ - /* */ - /* Two macros are used within the FreeType source code to define */ - /* exported library functions: FT_EXPORT and FT_EXPORT_DEF. */ - /* */ - /* FT_EXPORT( return_type ) */ + /* If you use a build system like cmake or the `configure' script, */ + /* options set by those programs have precendence, overwriting the */ + /* value here with the configured one. */ /* */ - /* is used in a function declaration, as in */ - /* */ - /* FT_EXPORT( FT_Error ) */ - /* FT_Init_FreeType( FT_Library* alibrary ); */ - /* */ - /* */ - /* FT_EXPORT_DEF( return_type ) */ - /* */ - /* is used in a function definition, as in */ - /* */ - /* FT_EXPORT_DEF( FT_Error ) */ - /* FT_Init_FreeType( FT_Library* alibrary ) */ - /* { */ - /* ... some code ... */ - /* return FT_Err_Ok; */ - /* } */ - /* */ - /* You can provide your own implementation of FT_EXPORT and */ - /* FT_EXPORT_DEF here if you want. If you leave them undefined, they */ - /* will be later automatically defined as `extern return_type' to */ - /* allow normal compilation. */ - /* */ - /* Do not #undef these macros here since the build system might define */ - /* them for certain configurations only. */ - /* */ -/* #define FT_EXPORT(x) extern x */ -/* #define FT_EXPORT_DEF(x) x */ +/* #define FT_CONFIG_OPTION_USE_HARFBUZZ */ /*************************************************************************/ @@ -297,7 +301,7 @@ FT_BEGIN_HEADER /* */ /* - The TrueType driver will provide its own set of glyph names, */ /* if you build it to support postscript names in the TrueType */ - /* `post' table. */ + /* `post' table, but will not synthesize a missing Unicode charmap. */ /* */ /* - The Type 1 driver will not be able to synthesize a Unicode */ /* charmap out of the glyphs found in the fonts. */ @@ -492,7 +496,21 @@ FT_BEGIN_HEADER /* code will be used. */ /* */ /* Setting this macro is needed for systems that prohibit address */ - /* fixups, such as BREW. */ + /* fixups, such as BREW. [Note that standard compilers like gcc or */ + /* clang handle PIC generation automatically; you don't have to set */ + /* FT_CONFIG_OPTION_PIC, which is only necessary for very special */ + /* compilers.] */ + /* */ + /* Note that FT_CONFIG_OPTION_PIC support is not available for all */ + /* modules (see `modules.cfg' for a complete list). For building with */ + /* FT_CONFIG_OPTION_PIC support, do the following. */ + /* */ + /* 0. Clone the repository. */ + /* 1. Define FT_CONFIG_OPTION_PIC. */ + /* 2. Remove all subdirectories in `src' that don't have */ + /* FT_CONFIG_OPTION_PIC support. */ + /* 3. Comment out the corresponding modules in `modules.cfg'. */ + /* 4. Compile. */ /* */ /* #define FT_CONFIG_OPTION_PIC */ @@ -586,73 +604,62 @@ FT_BEGIN_HEADER /*************************************************************************/ /* */ /* Define TT_CONFIG_OPTION_SUBPIXEL_HINTING if you want to compile */ - /* EXPERIMENTAL subpixel hinting support into the TrueType driver. This */ - /* replaces the native TrueType hinting mechanism when anything but */ - /* FT_RENDER_MODE_MONO is requested. */ + /* subpixel hinting support into the TrueType driver. This modifies the */ + /* TrueType hinting mechanism when anything but FT_RENDER_MODE_MONO is */ + /* requested. */ /* */ - /* Enabling this causes the TrueType driver to ignore instructions under */ - /* certain conditions. This is done in accordance with the guide here, */ - /* with some minor differences: */ + /* In particular, it modifies the bytecode interpreter to interpret (or */ + /* not) instructions in a certain way so that all TrueType fonts look */ + /* like they do in a Windows ClearType (DirectWrite) environment. See */ + /* [1] for a technical overview on what this means. See `ttinterp.h' */ + /* for more details on the LEAN option. */ /* */ - /* http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx */ + /* There are three possible values. */ /* */ - /* By undefining this, you only compile the code necessary to hint */ - /* TrueType glyphs with native TT hinting. */ + /* Value 1: */ + /* This value is associated with the `Infinality' moniker, */ + /* contributed by an individual nicknamed Infinality with the goal of */ + /* making TrueType fonts render better than on Windows. A high */ + /* amount of configurability and flexibility, down to rules for */ + /* single glyphs in fonts, but also very slow. Its experimental and */ + /* slow nature and the original developer losing interest meant that */ + /* this option was never enabled in default builds. */ /* */ - /* This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be */ - /* defined. */ + /* The corresponding interpreter version is v38. */ /* */ -/* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING */ - - - /*************************************************************************/ - /* */ - /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version */ - /* of the TrueType bytecode interpreter is used that doesn't implement */ - /* any of the patented opcodes and algorithms. The patents related to */ - /* TrueType hinting have expired worldwide since May 2010; this option */ - /* is now deprecated. */ - /* */ - /* Note that the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* */ - /* if you define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; in other words, */ - /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or */ - /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time. */ + /* Value 2: */ + /* The new default mode for the TrueType driver. The Infinality code */ + /* base was stripped to the bare minimum and all configurability */ + /* removed in the name of speed and simplicity. The configurability */ + /* was mainly aimed at legacy fonts like Arial, Times New Roman, or */ + /* Courier. Legacy fonts are fonts that modify vertical stems to */ + /* achieve clean black-and-white bitmaps. The new mode focuses on */ + /* applying a minimal set of rules to all fonts indiscriminately so */ + /* that modern and web fonts render well while legacy fonts render */ + /* okay. */ /* */ - /* This macro is only useful for a small number of font files (mostly */ - /* for Asian scripts) that require bytecode interpretation to properly */ - /* load glyphs. For all other fonts, this produces unpleasant results, */ - /* thus the unpatented interpreter is never used to load glyphs from */ - /* TrueType fonts unless one of the following two options is used. */ + /* The corresponding interpreter version is v40. */ /* */ - /* - The unpatented interpreter is explicitly activated by the user */ - /* through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag */ - /* when opening the FT_Face. */ + /* Value 3: */ + /* Compile both, making both v38 and v40 available (the latter is the */ + /* default). */ /* */ - /* - FreeType detects that the FT_Face corresponds to one of the */ - /* `trick' fonts (e.g., `Mingliu') it knows about. The font engine */ - /* contains a hard-coded list of font names and other matching */ - /* parameters (see function `tt_face_init' in file */ - /* `src/truetype/ttobjs.c'). */ + /* By undefining these, you get rendering behavior like on Windows */ + /* without ClearType, i.e., Windows XP without ClearType enabled and */ + /* Win9x (interpreter version v35). Or not, depending on how much */ + /* hinting blood and testing tears the font designer put into a given */ + /* font. If you define one or both subpixel hinting options, you can */ + /* switch between between v35 and the ones you define (using */ + /* `FT_Property_Set'). */ /* */ - /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */ + /* This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be */ + /* defined. */ /* */ - /* { */ - /* FT_Parameter parameter; */ - /* FT_Open_Args open_args; */ + /* [1] https://www.microsoft.com/typography/cleartype/truetypecleartype.aspx */ /* */ - /* */ - /* parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING; */ - /* */ - /* open_args.flags = FT_OPEN_PATHNAME | FT_OPEN_PARAMS; */ - /* open_args.pathname = my_font_pathname; */ - /* open_args.num_params = 1; */ - /* open_args.params = ¶meter; */ - /* */ - /* error = FT_Open_Face( library, &open_args, index, &face ); */ - /* ... */ - /* } */ - /* */ -/* #define TT_CONFIG_OPTION_UNPATENTED_HINTING */ +/* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING 1 */ +#define TT_CONFIG_OPTION_SUBPIXEL_HINTING 2 +/* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING ( 1 | 2 ) */ /*************************************************************************/ @@ -668,7 +675,7 @@ FT_BEGIN_HEADER /* composite flags array which can be used to disambiguate, but old */ /* fonts will not have them. */ /* */ - /* http://www.microsoft.com/typography/otspec/glyf.htm */ + /* https://www.microsoft.com/typography/otspec/glyf.htm */ /* https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6glyf.html */ /* */ #undef TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED @@ -693,6 +700,24 @@ FT_BEGIN_HEADER /*************************************************************************/ + /* */ + /* Option TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES controls the maximum */ + /* number of bytecode instructions executed for a single run of the */ + /* bytecode interpreter, needed to prevent infinite loops. You don't */ + /* want to change this except for very special situations (e.g., making */ + /* a library fuzzer spend less time to handle broken fonts). */ + /* */ + /* It is not expected that this value is ever modified by a configuring */ + /* script; instead, it gets surrounded with #ifndef ... #endif so that */ + /* the value can be set as a preprocessor option on the compiler's */ + /* command line. */ + /* */ +#ifndef TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES +#define TT_CONFIG_OPTION_MAX_RUNNABLE_OPCODES 1000000L +#endif + + + /*************************************************************************/ /*************************************************************************/ /**** ****/ /**** T Y P E 1 D R I V E R C O N F I G U R A T I O N ****/ @@ -748,6 +773,16 @@ FT_BEGIN_HEADER /*************************************************************************/ + /* */ + /* T1_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe Type 1 */ + /* engine gets compiled into FreeType. If defined, it is possible to */ + /* switch between the two engines using the `hinting-engine' property of */ + /* the type1 driver module. */ + /* */ +/* #define T1_CONFIG_OPTION_OLD_ENGINE */ + + + /*************************************************************************/ /*************************************************************************/ /**** ****/ /**** C F F D R I V E R C O N F I G U R A T I O N ****/ @@ -762,8 +797,8 @@ FT_BEGIN_HEADER /* possible to set up the default values of the four control points that */ /* define the stem darkening behaviour of the (new) CFF engine. For */ /* more details please read the documentation of the */ - /* `darkening-parameters' property of the cff driver module (file */ - /* `ftcffdrv.h'), which allows the control at run-time. */ + /* `darkening-parameters' property (file `ftdriver.h'), which allows the */ + /* control at run-time. */ /* */ /* Do *not* undefine these macros! */ /* */ @@ -793,6 +828,33 @@ FT_BEGIN_HEADER /*************************************************************************/ /*************************************************************************/ /**** ****/ + /**** P C F D R I V E R C O N F I G U R A T I O N ****/ + /**** ****/ + /*************************************************************************/ + /*************************************************************************/ + + + /*************************************************************************/ + /* */ + /* There are many PCF fonts just called `Fixed' which look completely */ + /* different, and which have nothing to do with each other. When */ + /* selecting `Fixed' in KDE or Gnome one gets results that appear rather */ + /* random, the style changes often if one changes the size and one */ + /* cannot select some fonts at all. This option makes the PCF module */ + /* prepend the foundry name (plus a space) to the family name. */ + /* */ + /* We also check whether we have `wide' characters; all put together, we */ + /* get family names like `Sony Fixed' or `Misc Fixed Wide'. */ + /* */ + /* If this option is activated, it can be controlled with the */ + /* `no-long-family-names' property of the pcf driver module. */ + /* */ +/* #define PCF_CONFIG_OPTION_LONG_FAMILY_NAMES */ + + + /*************************************************************************/ + /*************************************************************************/ + /**** ****/ /**** 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 ****/ /**** ****/ /*************************************************************************/ @@ -808,7 +870,9 @@ FT_BEGIN_HEADER /*************************************************************************/ /* */ - /* Compile autofit module with Indic script support. */ + /* Compile autofit module with fallback Indic script support, covering */ + /* some scripts that the `latin' submodule of the autofit module doesn't */ + /* (yet) handle. */ /* */ #define AF_CONFIG_OPTION_INDIC @@ -822,11 +886,31 @@ FT_BEGIN_HEADER /* */ /* This experimental option is active only if the rendering mode is */ /* FT_RENDER_MODE_LIGHT; you can switch warping on and off with the */ - /* `warping' property of the auto-hinter (see file `ftautoh.h' for more */ + /* `warping' property of the auto-hinter (see file `ftdriver.h' for more */ /* information; by default it is switched off). */ /* */ #define AF_CONFIG_OPTION_USE_WARPER + /*************************************************************************/ + /* */ + /* Use TrueType-like size metrics for `light' auto-hinting. */ + /* */ + /* It is strongly recommended to avoid this option, which exists only to */ + /* help some legacy applications retain its appearance and behaviour */ + /* with respect to auto-hinted TrueType fonts. */ + /* */ + /* The very reason this option exists at all are GNU/Linux distributions */ + /* like Fedora that did not un-patch the following change (which was */ + /* present in FreeType between versions 2.4.6 and 2.7.1, inclusive). */ + /* */ + /* 2011-07-16 Steven Chu <steven.f.chu@gmail.com> */ + /* */ + /* [truetype] Fix metrics on size request for scalable fonts. */ + /* */ + /* This problematic commit is now reverted (more or less). */ + /* */ +/* #define AF_CONFIG_OPTION_TT_SIZE_METRICS */ + /* */ @@ -838,14 +922,21 @@ FT_BEGIN_HEADER /* - * This macro is defined if either unpatented or native TrueType - * hinting is requested by the definitions above. + * This macro is defined if native TrueType hinting is requested by the + * definitions above. */ #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER #define TT_USE_BYTECODE_INTERPRETER -#undef TT_CONFIG_OPTION_UNPATENTED_HINTING -#elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING -#define TT_USE_BYTECODE_INTERPRETER + +#ifdef TT_CONFIG_OPTION_SUBPIXEL_HINTING +#if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 1 +#define TT_SUPPORT_SUBPIXEL_HINTING_INFINALITY +#endif + +#if TT_CONFIG_OPTION_SUBPIXEL_HINTING & 2 +#define TT_SUPPORT_SUBPIXEL_HINTING_MINIMAL +#endif +#endif #endif @@ -880,7 +971,7 @@ FT_BEGIN_HEADER FT_END_HEADER -#endif /* __FTOPTION_H__ */ +#endif /* FTOPTION_H_ */ /* END */ |