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Edit File : ftoption.h \| Size : 60.05 KB
/**************************************************************************/ / / / ftoption.h / / / / User-selectable configuration macros (specification only). / / / / Copyright 1996-2018 by / / David Turner, Robert Wilhelm, and Werner Lemberg. / / / / This file is part of the FreeType project, and may only be used, / / modified, and distributed under the terms of the FreeType project / / license, LICENSE.TXT. By continuing to use, modify, or distribute / / this file you indicate that you have read the license and / / understand and accept it fully. / / / /************************************************************************/ #ifndef FTOPTION_H_ #define FTOPTION_H_ #include <ft2build.h> FT_BEGIN_HEADER /**********************************************************************/ / / / USER-SELECTABLE CONFIGURATION MACROS / / / / This file contains the default configuration macro definitions for / / a standard build of the FreeType library. There are three ways to / / use this file to build project-specific versions of the library: / / / / - You can modify this file by hand, but this is not recommended in / / cases where you would like to build several versions of the / / library from a single source directory. / / / / - You can put a copy of this file in your build directory, more / / precisely in `$BUILD/freetype/config/ftoption.h', where `$BUILD' / / is the name of a directory that is included _before_ the FreeType / / include path during compilation. / / / / The default FreeType Makefiles and Jamfiles use the build / / directory `builds/<system>' by default, but you can easily change / / that for your own projects. / / / / - Copy the file <ft2build.h> to `$BUILD/ft2build.h' and modify it / / slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to / / locate this file during the build. For example, / / / / #define FT_CONFIG_OPTIONS_H <myftoptions.h> / / #include <freetype/config/ftheader.h> / / / / will use `$BUILD/myftoptions.h' instead of this file for macro / / definitions. / / / / Note also that you can similarly pre-define the macro / / FT_CONFIG_MODULES_H used to locate the file listing of the modules / / that are statically linked to the library at compile time. By / / default, this file is <freetype/config/ftmodule.h>. / / / / We highly recommend using the third method whenever possible. / / / /**********************************************************************/ /*********************************************************************/ /*********************************************************************/ / / / 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 / / / /*********************************************************************/ /**********************************************************************/ /#**********************************************************************/ / / / 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 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. / / 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 /***********************************************************************/ / / / Many compilers provide a non-ANSI 64-bit data type that can be used / / by FreeType to speed up some computations. However, this will create / / some problems when compiling the library in strict ANSI mode. / / / / For this reason, the use of 64-bit integers is normally disabled when / / the __STDC__ macro is defined. You can however disable this by / / defining the macro FT_CONFIG_OPTION_FORCE_INT64 here. / / / / For most compilers, this will only create compilation warnings when / / building the library. / / / / ObNote: The compiler-specific 64-bit integers are detected in the / / file `ftconfig.h' either statically or through the / / `configure' script on supported platforms. / / / #undef FT_CONFIG_OPTION_FORCE_INT64 /***********************************************************************/ / / / If this macro is defined, do not try to use an assembler version of / / performance-critical functions (e.g. FT_MulFix). You should only do / / that to verify that the assembler function works properly, or to / / execute benchmark tests of the various implementations. / / #define FT_CONFIG_OPTION_NO_ASSEMBLER / /***********************************************************************/ / / / If this macro is defined, try to use an inlined assembler version of / / the `FT_MulFix' function, which is a `hotspot' when loading and / / hinting glyphs, and which should be executed as fast as possible. / / / / Note that if your compiler or CPU is not supported, this will default / / to the standard and portable implementation found in `ftcalc.c'. / / / #define FT_CONFIG_OPTION_INLINE_MULFIX /***********************************************************************/ / / / LZW-compressed file support. / / / / FreeType now handles font files that have been compressed with the / / `compress' program. This is mostly used to parse many of the PCF / / files that come with various X11 distributions. The implementation / / uses NetBSD's `zopen' to partially uncompress the file on the fly / / (see src/lzw/ftgzip.c). / / / / Define this macro if you want to enable this `feature'. / / / #define FT_CONFIG_OPTION_USE_LZW /***********************************************************************/ / / / Gzip-compressed file support. / / / / FreeType now handles font files that have been compressed with the / / `gzip' program. This is mostly used to parse many of the PCF files / / that come with XFree86. The implementation uses `zlib' to / / partially uncompress the file on the fly (see src/gzip/ftgzip.c). / / / / Define this macro if you want to enable this `feature'. See also / / the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below. / / / #define FT_CONFIG_OPTION_USE_ZLIB /***********************************************************************/ / / / ZLib library selection / / / / This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined. / / It allows FreeType's `ftgzip' component to link to the system's / / installation of the ZLib library. This is useful on systems like / / Unix or VMS where it generally is already available. / / / / If you let it undefined, the component will use its own copy / / of the zlib sources instead. These have been modified to be / / included directly within the component and not export external / / function names. This allows you to link any program with FreeType / / _and_ ZLib without linking conflicts. / / / / 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 /***********************************************************************/ / / / Bzip2-compressed file support. / / / / FreeType now handles font files that have been compressed with the / / `bzip2' program. This is mostly used to parse many of the PCF / / files that come with XFree86. The implementation uses `libbz2' to / / partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). / / Contrary to gzip, bzip2 currently is not included and need to use / / the system available bzip2 implementation. / / / / 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 /***********************************************************************/ / / / Define to disable the use of file stream functions and types, FILE, / / fopen() etc. Enables the use of smaller system libraries on embedded / / systems that have multiple system libraries, some with or without / / file stream support, in the cases where file stream support is not / / necessary such as memory loading of font files. / / / / #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT / /***********************************************************************/ / / / PNG bitmap support. / / / / FreeType now handles loading color bitmap glyphs in the PNG format. / / This requires help from the external libpng library. Uncompressed / / color bitmaps do not need any external libraries and will be / / supported regardless of this configuration. / / / / 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 /***********************************************************************/ / / / HarfBuzz support. / / / / FreeType uses the HarfBuzz library to improve auto-hinting of / / OpenType fonts. If available, many glyphs not directly addressable / / by a font's character map will be hinted also. / / / / 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. / / / / #undef FT_CONFIG_OPTION_USE_HARFBUZZ / /***********************************************************************/ / / / Glyph Postscript Names handling / / / / By default, FreeType 2 is compiled with the `psnames' module. This / / module is in charge of converting a glyph name string into a / / Unicode value, or return a Macintosh standard glyph name for the / / use with the TrueType `post' table. / / / / Undefine this macro if you do not want `psnames' compiled in your / / build of FreeType. This has the following effects: / / / / - The TrueType driver will provide its own set of glyph names, / / if you build it to support postscript names in the TrueType / / `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. / / / / You would normally undefine this configuration macro when building / / a version of FreeType that doesn't contain a Type 1 or CFF driver. / / / #define FT_CONFIG_OPTION_POSTSCRIPT_NAMES /***********************************************************************/ / / / Postscript Names to Unicode Values support / / / / By default, FreeType 2 is built with the `PSNames' module compiled / / in. Among other things, the module is used to convert a glyph name / / into a Unicode value. This is especially useful in order to / / synthesize on the fly a Unicode charmap from the CFF/Type 1 driver / / through a big table named the `Adobe Glyph List' (AGL). / / / / Undefine this macro if you do not want the Adobe Glyph List / / compiled in your `PSNames' module. The Type 1 driver will not be / / able to synthesize a Unicode charmap out of the glyphs found in the / / fonts. / / / #define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST /***********************************************************************/ / / / Support for Mac fonts / / / / Define this macro if you want support for outline fonts in Mac / / format (mac dfont, mac resource, macbinary containing a mac / / resource) on non-Mac platforms. / / / / Note that the `FOND' resource isn't checked. / / / #define FT_CONFIG_OPTION_MAC_FONTS /***********************************************************************/ / / / Guessing methods to access embedded resource forks / / / / Enable extra Mac fonts support on non-Mac platforms (e.g. / / GNU/Linux). / / / / Resource forks which include fonts data are stored sometimes in / / locations which users or developers don't expected. In some cases, / / resource forks start with some offset from the head of a file. In / / other cases, the actual resource fork is stored in file different / / from what the user specifies. If this option is activated, / / FreeType tries to guess whether such offsets or different file / / names must be used. / / / / Note that normal, direct access of resource forks is controlled via / / the FT_CONFIG_OPTION_MAC_FONTS option. / / / #ifdef FT_CONFIG_OPTION_MAC_FONTS #define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK #endif /***********************************************************************/ / / / Allow the use of FT_Incremental_Interface to load typefaces that / / contain no glyph data, but supply it via a callback function. / / This is required by clients supporting document formats which / / supply font data incrementally as the document is parsed, such / / as the Ghostscript interpreter for the PostScript language. / / / #define FT_CONFIG_OPTION_INCREMENTAL /***********************************************************************/ / / / The size in bytes of the render pool used by the scan-line converter / / to do all of its work. / / / #define FT_RENDER_POOL_SIZE 16384L /***********************************************************************/ / / / FT_MAX_MODULES / / / / The maximum number of modules that can be registered in a single / / FreeType library object. 32 is the default. / / / #define FT_MAX_MODULES 32 /***********************************************************************/ / / / Debug level / / / / FreeType can be compiled in debug or trace mode. In debug mode, / / errors are reported through the `ftdebug' component. In trace / / mode, additional messages are sent to the standard output during / / execution. / / / / Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode. / / Define FT_DEBUG_LEVEL_TRACE to build it in trace mode. / / / / Don't define any of these macros to compile in `release' mode! / / / / Do not #undef these macros here since the build system might define / / them for certain configurations only. / / / / #define FT_DEBUG_LEVEL_ERROR / / #define FT_DEBUG_LEVEL_TRACE / /***********************************************************************/ / / / Autofitter debugging / / / / If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to / / control the autofitter behaviour for debugging purposes with global / / boolean variables (consequently, you should never enable this / / while compiling in `release' mode): / / / / _af_debug_disable_horz_hints / / _af_debug_disable_vert_hints / / _af_debug_disable_blue_hints / / / / Additionally, the following functions provide dumps of various / / internal autofit structures to stdout (using `printf'): / / / / af_glyph_hints_dump_points / / af_glyph_hints_dump_segments / / af_glyph_hints_dump_edges / / af_glyph_hints_get_num_segments / / af_glyph_hints_get_segment_offset / / / / As an argument, they use another global variable: / / / / _af_debug_hints / / / / Please have a look at the `ftgrid' demo program to see how those / / variables and macros should be used. / / / / Do not #undef these macros here since the build system might define / / them for certain configurations only. / / / / #define FT_DEBUG_AUTOFIT / /***********************************************************************/ / / / Memory Debugging / / / / FreeType now comes with an integrated memory debugger that is / / capable of detecting simple errors like memory leaks or double / / deletes. To compile it within your build of the library, you / / should define FT_DEBUG_MEMORY here. / / / / Note that the memory debugger is only activated at runtime when / / when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! / / / / Do not #undef this macro here since the build system might define / / it for certain configurations only. / / / / #define FT_DEBUG_MEMORY / /***********************************************************************/ / / / Module errors / / / / If this macro is set (which is _not_ the default), the higher byte / / of an error code gives the module in which the error has occurred, / / while the lower byte is the real error code. / / / / Setting this macro makes sense for debugging purposes only, since / / it would break source compatibility of certain programs that use / / FreeType 2. / / / / More details can be found in the files ftmoderr.h and fterrors.h. / / / #undef FT_CONFIG_OPTION_USE_MODULE_ERRORS /***********************************************************************/ / / / Position Independent Code / / / / If this macro is set (which is _not_ the default), FreeType2 will / / avoid creating constants that require address fixups. Instead the / / constants will be moved into a struct and additional intialization / / code will be used. / / / / Setting this macro is needed for systems that prohibit address / / 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 / /**********************************************************************/ /*********************************************************************/ / / / S F N T D R I V E R C O N F I G U R A T I O N / / / /*********************************************************************/ /*********************************************************************/ /**********************************************************************/ / / / Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support / / embedded bitmaps in all formats using the SFNT module (namely / / TrueType & OpenType). / / / #define TT_CONFIG_OPTION_EMBEDDED_BITMAPS /***********************************************************************/ / / / Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to / / load and enumerate the glyph Postscript names in a TrueType or / / OpenType file. / / / / Note that when you do not compile the `PSNames' module by undefining / / the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will / / contain additional code used to read the PS Names table from a font. / / / / (By default, the module uses `PSNames' to extract glyph names.) / / / #define TT_CONFIG_OPTION_POSTSCRIPT_NAMES /***********************************************************************/ / / / Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to / / access the internal name table in a SFNT-based format like TrueType / / or OpenType. The name table contains various strings used to / / describe the font, like family name, copyright, version, etc. It / / does not contain any glyph name though. / / / / Accessing SFNT names is done through the functions declared in / / `ftsnames.h'. / / / #define TT_CONFIG_OPTION_SFNT_NAMES /***********************************************************************/ / / / TrueType CMap support / / / / Here you can fine-tune which TrueType CMap table format shall be / / supported. / #define TT_CONFIG_CMAP_FORMAT_0 #define TT_CONFIG_CMAP_FORMAT_2 #define TT_CONFIG_CMAP_FORMAT_4 #define TT_CONFIG_CMAP_FORMAT_6 #define TT_CONFIG_CMAP_FORMAT_8 #define TT_CONFIG_CMAP_FORMAT_10 #define TT_CONFIG_CMAP_FORMAT_12 #define TT_CONFIG_CMAP_FORMAT_13 #define TT_CONFIG_CMAP_FORMAT_14 /**********************************************************************/ /*********************************************************************/ / / / 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 / / / /*********************************************************************/ /*********************************************************************/ /**********************************************************************/ / / / Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile / / a bytecode interpreter in the TrueType driver. / / / / By undefining this, you will only compile the code necessary to load / / TrueType glyphs without hinting. / / / / Do not #undef this macro here, since the build system might / / define it for certain configurations only. / / / #define TT_CONFIG_OPTION_BYTECODE_INTERPRETER /***********************************************************************/ / / / Define TT_CONFIG_OPTION_SUBPIXEL_HINTING if you want to compile / / subpixel hinting support into the TrueType driver. This modifies the / / TrueType hinting mechanism when anything but FT_RENDER_MODE_MONO is / / requested. / / / / 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. / / / / There are three possible values. / / / / 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. / / / / The corresponding interpreter version is v38. / / / / 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. / / / / The corresponding interpreter version is v40. / / / / Value 3: / / Compile both, making both v38 and v40 available (the latter is the / / default). / / / / 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'). / / / / This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be / / defined. / / / / [1] https://www.microsoft.com/typography/cleartype/truetypecleartype.aspx / / / / #define TT_CONFIG_OPTION_SUBPIXEL_HINTING 1 / #define TT_CONFIG_OPTION_SUBPIXEL_HINTING 2 / #define TT_CONFIG_OPTION_SUBPIXEL_HINTING ( 1 \| 2 ) / /***********************************************************************/ / / / Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the / / TrueType glyph loader to use Apple's definition of how to handle / / component offsets in composite glyphs. / / / / Apple and MS disagree on the default behavior of component offsets / / in composites. Apple says that they should be scaled by the scaling / / factors in the transformation matrix (roughly, it's more complex) / / while MS says they should not. OpenType defines two bits in the / / composite flags array which can be used to disambiguate, but old / / fonts will not have them. / / / / 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 /***********************************************************************/ / / / Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include / / support for Apple's distortable font technology (fvar, gvar, cvar, / / and avar tables). This has many similarities to Type 1 Multiple / / Masters support. / / / #define TT_CONFIG_OPTION_GX_VAR_SUPPORT /***********************************************************************/ / / / Define TT_CONFIG_OPTION_BDF if you want to include support for / / an embedded `BDF ' table within SFNT-based bitmap formats. / / / #define TT_CONFIG_OPTION_BDF /***********************************************************************/ / / / 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 / / / /*********************************************************************/ /*********************************************************************/ /**********************************************************************/ / / / T1_MAX_DICT_DEPTH is the maximum depth of nest dictionaries and / / arrays in the Type 1 stream (see t1load.c). A minimum of 4 is / / required. / / / #define T1_MAX_DICT_DEPTH 5 /***********************************************************************/ / / / T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine / / calls during glyph loading. / / / #define T1_MAX_SUBRS_CALLS 16 /***********************************************************************/ / / / T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity. A / / minimum of 16 is required. / / / / The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. / / / #define T1_MAX_CHARSTRINGS_OPERANDS 256 /***********************************************************************/ / / / Define this configuration macro if you want to prevent the / / compilation of `t1afm', which is in charge of reading Type 1 AFM / / files into an existing face. Note that if set, the T1 driver will be / / unable to produce kerning distances. / / / #undef T1_CONFIG_OPTION_NO_AFM /***********************************************************************/ / / / Define this configuration macro if you want to prevent the / / compilation of the Multiple Masters font support in the Type 1 / / driver. / / / #undef T1_CONFIG_OPTION_NO_MM_SUPPORT /***********************************************************************/ / / / 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 / / / /*********************************************************************/ /*********************************************************************/ /**********************************************************************/ / / / Using CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4} it is / / 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 (file `ftdriver.h'), which allows the / / control at run-time. / / / / Do not undefine these macros! / / / #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 500 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 400 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 1000 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 275 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 1667 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 275 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 2333 #define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 0 /***********************************************************************/ / / / CFF_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe CFF / / engine gets compiled into FreeType. If defined, it is possible to / / switch between the two engines using the `hinting-engine' property of / / the cff driver module. / / / / #define CFF_CONFIG_OPTION_OLD_ENGINE / /**********************************************************************/ /*********************************************************************/ / / / 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 / / / /*********************************************************************/ /*********************************************************************/ /**********************************************************************/ / / / Compile autofit module with CJK (Chinese, Japanese, Korean) script / / support. / / / #define AF_CONFIG_OPTION_CJK /***********************************************************************/ / / / 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 /***********************************************************************/ / / / Compile autofit module with warp hinting. The idea of the warping / / code is to slightly scale and shift a glyph within a single dimension / / so that as much of its segments are aligned (more or less) on the / / grid. To find out the optimal scaling and shifting value, various / / parameter combinations are tried and scored. / / / / 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 `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 / / / / * This macro is obsolete. Support has been removed in FreeType * version 2.5. / / #define FT_CONFIG_OPTION_OLD_INTERNALS / / * 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 #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 / * Check CFF darkening parameters. The checks are the same as in function * `cff_property_set' in file `cffdrivr.c'. / #if CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 < 0 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 < 0 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 < 0 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 < 0 \|\| \ \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 < 0 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 < 0 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 < 0 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 < 0 \|\| \ \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 > \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 > \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 > \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 \|\| \ \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 > 500 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 > 500 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 > 500 \|\| \ CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 > 500 #error "Invalid CFF darkening parameters!" #endif FT_END_HEADER #endif / FTOPTION_H_ / / END */ Back

Edit File : ftoption.h | Size : 60.05 KB

/***************************************************************************/
/*                                                                         */
/*  ftoption.h                                                             */
/*                                                                         */
/*    User-selectable configuration macros (specification only).           */
/*                                                                         */
/*  Copyright 1996-2018 by                                                 */
/*  David Turner, Robert Wilhelm, and Werner Lemberg.                      */
/*                                                                         */
/*  This file is part of the FreeType project, and may only be used,       */
/*  modified, and distributed under the terms of the FreeType project      */
/*  license, LICENSE.TXT.  By continuing to use, modify, or distribute     */
/*  this file you indicate that you have read the license and              */
/*  understand and accept it fully.                                        */
/*                                                                         */
/***************************************************************************/

#ifndef FTOPTION_H_
#define FTOPTION_H_

#include <ft2build.h>

FT_BEGIN_HEADER

/*************************************************************************/
  /*                                                                       */
  /*                 USER-SELECTABLE CONFIGURATION MACROS                  */
  /*                                                                       */
  /* This file contains the default configuration macro definitions for    */
  /* a standard build of the FreeType library.  There are three ways to    */
  /* use this file to build project-specific versions of the library:      */
  /*                                                                       */
  /*  - You can modify this file by hand, but this is not recommended in   */
  /*    cases where you would like to build several versions of the        */
  /*    library from a single source directory.                            */
  /*                                                                       */
  /*  - You can put a copy of this file in your build directory, more      */
  /*    precisely in `$BUILD/freetype/config/ftoption.h', where `$BUILD'   */
  /*    is the name of a directory that is included _before_ the FreeType  */
  /*    include path during compilation.                                   */
  /*                                                                       */
  /*    The default FreeType Makefiles and Jamfiles use the build          */
  /*    directory `builds/<system>' by default, but you can easily change  */
  /*    that for your own projects.                                        */
  /*                                                                       */
  /*  - Copy the file <ft2build.h> to `$BUILD/ft2build.h' and modify it    */
  /*    slightly to pre-define the macro FT_CONFIG_OPTIONS_H used to       */
  /*    locate this file during the build.  For example,                   */
  /*                                                                       */
  /*      #define FT_CONFIG_OPTIONS_H  <myftoptions.h>                     */
  /*      #include <freetype/config/ftheader.h>                            */
  /*                                                                       */
  /*    will use `$BUILD/myftoptions.h' instead of this file for macro     */
  /*    definitions.                                                       */
  /*                                                                       */
  /*    Note also that you can similarly pre-define the macro              */
  /*    FT_CONFIG_MODULES_H used to locate the file listing of the modules */
  /*    that are statically linked to the library at compile time.  By     */
  /*    default, this file is <freetype/config/ftmodule.h>.                */
  /*                                                                       */
  /* We highly recommend using the third method whenever possible.         */
  /*                                                                       */
  /*************************************************************************/

/*************************************************************************/
  /*************************************************************************/
  /****                                                                 ****/
  /**** 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 ****/
  /****                                                                 ****/
  /*************************************************************************/
  /*************************************************************************/

/*#***********************************************************************/
  /*                                                                       */
  /* 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 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.      */
  /* 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

/*************************************************************************/
  /*                                                                       */
  /* Many compilers provide a non-ANSI 64-bit data type that can be used   */
  /* by FreeType to speed up some computations.  However, this will create */
  /* some problems when compiling the library in strict ANSI mode.         */
  /*                                                                       */
  /* For this reason, the use of 64-bit integers is normally disabled when */
  /* the __STDC__ macro is defined.  You can however disable this by       */
  /* defining the macro FT_CONFIG_OPTION_FORCE_INT64 here.                 */
  /*                                                                       */
  /* For most compilers, this will only create compilation warnings when   */
  /* building the library.                                                 */
  /*                                                                       */
  /* ObNote: The compiler-specific 64-bit integers are detected in the     */
  /*         file `ftconfig.h' either statically or through the            */
  /*         `configure' script on supported platforms.                    */
  /*                                                                       */
#undef FT_CONFIG_OPTION_FORCE_INT64

/*************************************************************************/
  /*                                                                       */
  /* If this macro is defined, do not try to use an assembler version of   */
  /* performance-critical functions (e.g. FT_MulFix).  You should only do  */
  /* that to verify that the assembler function works properly, or to      */
  /* execute benchmark tests of the various implementations.               */
/* #define FT_CONFIG_OPTION_NO_ASSEMBLER */

/*************************************************************************/
  /*                                                                       */
  /* If this macro is defined, try to use an inlined assembler version of  */
  /* the `FT_MulFix' function, which is a `hotspot' when loading and       */
  /* hinting glyphs, and which should be executed as fast as possible.     */
  /*                                                                       */
  /* Note that if your compiler or CPU is not supported, this will default */
  /* to the standard and portable implementation found in `ftcalc.c'.      */
  /*                                                                       */
#define FT_CONFIG_OPTION_INLINE_MULFIX

/*************************************************************************/
  /*                                                                       */
  /* LZW-compressed file support.                                          */
  /*                                                                       */
  /*   FreeType now handles font files that have been compressed with the  */
  /*   `compress' program.  This is mostly used to parse many of the PCF   */
  /*   files that come with various X11 distributions.  The implementation */
  /*   uses NetBSD's `zopen' to partially uncompress the file on the fly   */
  /*   (see src/lzw/ftgzip.c).                                             */
  /*                                                                       */
  /*   Define this macro if you want to enable this `feature'.             */
  /*                                                                       */
#define FT_CONFIG_OPTION_USE_LZW

/*************************************************************************/
  /*                                                                       */
  /* Gzip-compressed file support.                                         */
  /*                                                                       */
  /*   FreeType now handles font files that have been compressed with the  */
  /*   `gzip' program.  This is mostly used to parse many of the PCF files */
  /*   that come with XFree86.  The implementation uses `zlib' to          */
  /*   partially uncompress the file on the fly (see src/gzip/ftgzip.c).   */
  /*                                                                       */
  /*   Define this macro if you want to enable this `feature'.  See also   */
  /*   the macro FT_CONFIG_OPTION_SYSTEM_ZLIB below.                       */
  /*                                                                       */
#define FT_CONFIG_OPTION_USE_ZLIB

/*************************************************************************/
  /*                                                                       */
  /* ZLib library selection                                                */
  /*                                                                       */
  /*   This macro is only used when FT_CONFIG_OPTION_USE_ZLIB is defined.  */
  /*   It allows FreeType's `ftgzip' component to link to the system's     */
  /*   installation of the ZLib library.  This is useful on systems like   */
  /*   Unix or VMS where it generally is already available.                */
  /*                                                                       */
  /*   If you let it undefined, the component will use its own copy        */
  /*   of the zlib sources instead.  These have been modified to be        */
  /*   included directly within the component and *not* export external    */
  /*   function names.  This allows you to link any program with FreeType  */
  /*   _and_ ZLib without linking conflicts.                               */
  /*                                                                       */
  /*   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

/*************************************************************************/
  /*                                                                       */
  /* Bzip2-compressed file support.                                        */
  /*                                                                       */
  /*   FreeType now handles font files that have been compressed with the  */
  /*   `bzip2' program.  This is mostly used to parse many of the PCF      */
  /*   files that come with XFree86.  The implementation uses `libbz2' to  */
  /*   partially uncompress the file on the fly (see src/bzip2/ftbzip2.c). */
  /*   Contrary to gzip, bzip2 currently is not included and need to use   */
  /*   the system available bzip2 implementation.                          */
  /*                                                                       */
  /*   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

/*************************************************************************/
  /*                                                                       */
  /* Define to disable the use of file stream functions and types, FILE,   */
  /* fopen() etc.  Enables the use of smaller system libraries on embedded */
  /* systems that have multiple system libraries, some with or without     */
  /* file stream support, in the cases where file stream support is not    */
  /* necessary such as memory loading of font files.                       */
  /*                                                                       */
/* #define FT_CONFIG_OPTION_DISABLE_STREAM_SUPPORT */

/*************************************************************************/
  /*                                                                       */
  /* PNG bitmap support.                                                   */
  /*                                                                       */
  /*   FreeType now handles loading color bitmap glyphs in the PNG format. */
  /*   This requires help from the external libpng library.  Uncompressed  */
  /*   color bitmaps do not need any external libraries and will be        */
  /*   supported regardless of this configuration.                         */
  /*                                                                       */
  /*   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

/*************************************************************************/
  /*                                                                       */
  /* HarfBuzz support.                                                     */
  /*                                                                       */
  /*   FreeType uses the HarfBuzz library to improve auto-hinting of       */
  /*   OpenType fonts.  If available, many glyphs not directly addressable */
  /*   by a font's character map will be hinted also.                      */
  /*                                                                       */
  /*   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.                                 */
  /*                                                                       */
/* #undef FT_CONFIG_OPTION_USE_HARFBUZZ */

/*************************************************************************/
  /*                                                                       */
  /* Glyph Postscript Names handling                                       */
  /*                                                                       */
  /*   By default, FreeType 2 is compiled with the `psnames' module.  This */
  /*   module is in charge of converting a glyph name string into a        */
  /*   Unicode value, or return a Macintosh standard glyph name for the    */
  /*   use with the TrueType `post' table.                                 */
  /*                                                                       */
  /*   Undefine this macro if you do not want `psnames' compiled in your   */
  /*   build of FreeType.  This has the following effects:                 */
  /*                                                                       */
  /*   - The TrueType driver will provide its own set of glyph names,      */
  /*     if you build it to support postscript names in the TrueType       */
  /*     `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.                     */
  /*                                                                       */
  /*   You would normally undefine this configuration macro when building  */
  /*   a version of FreeType that doesn't contain a Type 1 or CFF driver.  */
  /*                                                                       */
#define FT_CONFIG_OPTION_POSTSCRIPT_NAMES

/*************************************************************************/
  /*                                                                       */
  /* Postscript Names to Unicode Values support                            */
  /*                                                                       */
  /*   By default, FreeType 2 is built with the `PSNames' module compiled  */
  /*   in.  Among other things, the module is used to convert a glyph name */
  /*   into a Unicode value.  This is especially useful in order to        */
  /*   synthesize on the fly a Unicode charmap from the CFF/Type 1 driver  */
  /*   through a big table named the `Adobe Glyph List' (AGL).             */
  /*                                                                       */
  /*   Undefine this macro if you do not want the Adobe Glyph List         */
  /*   compiled in your `PSNames' module.  The Type 1 driver will not be   */
  /*   able to synthesize a Unicode charmap out of the glyphs found in the */
  /*   fonts.                                                              */
  /*                                                                       */
#define FT_CONFIG_OPTION_ADOBE_GLYPH_LIST

/*************************************************************************/
  /*                                                                       */
  /* Support for Mac fonts                                                 */
  /*                                                                       */
  /*   Define this macro if you want support for outline fonts in Mac      */
  /*   format (mac dfont, mac resource, macbinary containing a mac         */
  /*   resource) on non-Mac platforms.                                     */
  /*                                                                       */
  /*   Note that the `FOND' resource isn't checked.                        */
  /*                                                                       */
#define FT_CONFIG_OPTION_MAC_FONTS

/*************************************************************************/
  /*                                                                       */
  /* Guessing methods to access embedded resource forks                    */
  /*                                                                       */
  /*   Enable extra Mac fonts support on non-Mac platforms (e.g.           */
  /*   GNU/Linux).                                                         */
  /*                                                                       */
  /*   Resource forks which include fonts data are stored sometimes in     */
  /*   locations which users or developers don't expected.  In some cases, */
  /*   resource forks start with some offset from the head of a file.  In  */
  /*   other cases, the actual resource fork is stored in file different   */
  /*   from what the user specifies.  If this option is activated,         */
  /*   FreeType tries to guess whether such offsets or different file      */
  /*   names must be used.                                                 */
  /*                                                                       */
  /*   Note that normal, direct access of resource forks is controlled via */
  /*   the FT_CONFIG_OPTION_MAC_FONTS option.                              */
  /*                                                                       */
#ifdef FT_CONFIG_OPTION_MAC_FONTS
#define FT_CONFIG_OPTION_GUESSING_EMBEDDED_RFORK
#endif

/*************************************************************************/
  /*                                                                       */
  /* Allow the use of FT_Incremental_Interface to load typefaces that      */
  /* contain no glyph data, but supply it via a callback function.         */
  /* This is required by clients supporting document formats which         */
  /* supply font data incrementally as the document is parsed, such        */
  /* as the Ghostscript interpreter for the PostScript language.           */
  /*                                                                       */
#define FT_CONFIG_OPTION_INCREMENTAL

/*************************************************************************/
  /*                                                                       */
  /* The size in bytes of the render pool used by the scan-line converter  */
  /* to do all of its work.                                                */
  /*                                                                       */
#define FT_RENDER_POOL_SIZE  16384L

/*************************************************************************/
  /*                                                                       */
  /* FT_MAX_MODULES                                                        */
  /*                                                                       */
  /*   The maximum number of modules that can be registered in a single    */
  /*   FreeType library object.  32 is the default.                        */
  /*                                                                       */
#define FT_MAX_MODULES  32

/*************************************************************************/
  /*                                                                       */
  /* Debug level                                                           */
  /*                                                                       */
  /*   FreeType can be compiled in debug or trace mode.  In debug mode,    */
  /*   errors are reported through the `ftdebug' component.  In trace      */
  /*   mode, additional messages are sent to the standard output during    */
  /*   execution.                                                          */
  /*                                                                       */
  /*   Define FT_DEBUG_LEVEL_ERROR to build the library in debug mode.     */
  /*   Define FT_DEBUG_LEVEL_TRACE to build it in trace mode.              */
  /*                                                                       */
  /*   Don't define any of these macros to compile in `release' mode!      */
  /*                                                                       */
  /*   Do not #undef these macros here since the build system might define */
  /*   them for certain configurations only.                               */
  /*                                                                       */
/* #define FT_DEBUG_LEVEL_ERROR */
/* #define FT_DEBUG_LEVEL_TRACE */

/*************************************************************************/
  /*                                                                       */
  /* Autofitter debugging                                                  */
  /*                                                                       */
  /*   If FT_DEBUG_AUTOFIT is defined, FreeType provides some means to     */
  /*   control the autofitter behaviour for debugging purposes with global */
  /*   boolean variables (consequently, you should *never* enable this     */
  /*   while compiling in `release' mode):                                 */
  /*                                                                       */
  /*     _af_debug_disable_horz_hints                                      */
  /*     _af_debug_disable_vert_hints                                      */
  /*     _af_debug_disable_blue_hints                                      */
  /*                                                                       */
  /*   Additionally, the following functions provide dumps of various      */
  /*   internal autofit structures to stdout (using `printf'):             */
  /*                                                                       */
  /*     af_glyph_hints_dump_points                                        */
  /*     af_glyph_hints_dump_segments                                      */
  /*     af_glyph_hints_dump_edges                                         */
  /*     af_glyph_hints_get_num_segments                                   */
  /*     af_glyph_hints_get_segment_offset                                 */
  /*                                                                       */
  /*   As an argument, they use another global variable:                   */
  /*                                                                       */
  /*     _af_debug_hints                                                   */
  /*                                                                       */
  /*   Please have a look at the `ftgrid' demo program to see how those    */
  /*   variables and macros should be used.                                */
  /*                                                                       */
  /*   Do not #undef these macros here since the build system might define */
  /*   them for certain configurations only.                               */
  /*                                                                       */
/* #define FT_DEBUG_AUTOFIT */

/*************************************************************************/
  /*                                                                       */
  /* Memory Debugging                                                      */
  /*                                                                       */
  /*   FreeType now comes with an integrated memory debugger that is       */
  /*   capable of detecting simple errors like memory leaks or double      */
  /*   deletes.  To compile it within your build of the library, you       */
  /*   should define FT_DEBUG_MEMORY here.                                 */
  /*                                                                       */
  /*   Note that the memory debugger is only activated at runtime when     */
  /*   when the _environment_ variable `FT2_DEBUG_MEMORY' is defined also! */
  /*                                                                       */
  /*   Do not #undef this macro here since the build system might define   */
  /*   it for certain configurations only.                                 */
  /*                                                                       */
/* #define FT_DEBUG_MEMORY */

/*************************************************************************/
  /*                                                                       */
  /* Module errors                                                         */
  /*                                                                       */
  /*   If this macro is set (which is _not_ the default), the higher byte  */
  /*   of an error code gives the module in which the error has occurred,  */
  /*   while the lower byte is the real error code.                        */
  /*                                                                       */
  /*   Setting this macro makes sense for debugging purposes only, since   */
  /*   it would break source compatibility of certain programs that use    */
  /*   FreeType 2.                                                         */
  /*                                                                       */
  /*   More details can be found in the files ftmoderr.h and fterrors.h.   */
  /*                                                                       */
#undef FT_CONFIG_OPTION_USE_MODULE_ERRORS

/*************************************************************************/
  /*                                                                       */
  /* Position Independent Code                                             */
  /*                                                                       */
  /*   If this macro is set (which is _not_ the default), FreeType2 will   */
  /*   avoid creating constants that require address fixups.  Instead the  */
  /*   constants will be moved into a struct and additional intialization  */
  /*   code will be used.                                                  */
  /*                                                                       */
  /*   Setting this macro is needed for systems that prohibit address      */
  /*   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 */

/*************************************************************************/
  /*************************************************************************/
  /****                                                                 ****/
  /****        S F N T   D R I V E R    C O N F I G U R A T I O N       ****/
  /****                                                                 ****/
  /*************************************************************************/
  /*************************************************************************/

/*************************************************************************/
  /*                                                                       */
  /* Define TT_CONFIG_OPTION_EMBEDDED_BITMAPS if you want to support       */
  /* embedded bitmaps in all formats using the SFNT module (namely         */
  /* TrueType & OpenType).                                                 */
  /*                                                                       */
#define TT_CONFIG_OPTION_EMBEDDED_BITMAPS

/*************************************************************************/
  /*                                                                       */
  /* Define TT_CONFIG_OPTION_POSTSCRIPT_NAMES if you want to be able to    */
  /* load and enumerate the glyph Postscript names in a TrueType or        */
  /* OpenType file.                                                        */
  /*                                                                       */
  /* Note that when you do not compile the `PSNames' module by undefining  */
  /* the above FT_CONFIG_OPTION_POSTSCRIPT_NAMES, the `sfnt' module will   */
  /* contain additional code used to read the PS Names table from a font.  */
  /*                                                                       */
  /* (By default, the module uses `PSNames' to extract glyph names.)       */
  /*                                                                       */
#define TT_CONFIG_OPTION_POSTSCRIPT_NAMES

/*************************************************************************/
  /*                                                                       */
  /* Define TT_CONFIG_OPTION_SFNT_NAMES if your applications need to       */
  /* access the internal name table in a SFNT-based format like TrueType   */
  /* or OpenType.  The name table contains various strings used to         */
  /* describe the font, like family name, copyright, version, etc.  It     */
  /* does not contain any glyph name though.                               */
  /*                                                                       */
  /* Accessing SFNT names is done through the functions declared in        */
  /* `ftsnames.h'.                                                         */
  /*                                                                       */
#define TT_CONFIG_OPTION_SFNT_NAMES

/*************************************************************************/
  /*                                                                       */
  /* TrueType CMap support                                                 */
  /*                                                                       */
  /*   Here you can fine-tune which TrueType CMap table format shall be    */
  /*   supported.                                                          */
#define TT_CONFIG_CMAP_FORMAT_0
#define TT_CONFIG_CMAP_FORMAT_2
#define TT_CONFIG_CMAP_FORMAT_4
#define TT_CONFIG_CMAP_FORMAT_6
#define TT_CONFIG_CMAP_FORMAT_8
#define TT_CONFIG_CMAP_FORMAT_10
#define TT_CONFIG_CMAP_FORMAT_12
#define TT_CONFIG_CMAP_FORMAT_13
#define TT_CONFIG_CMAP_FORMAT_14

/*************************************************************************/
  /*************************************************************************/
  /****                                                                 ****/
  /****    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   ****/
  /****                                                                 ****/
  /*************************************************************************/
  /*************************************************************************/

/*************************************************************************/
  /*                                                                       */
  /* Define TT_CONFIG_OPTION_BYTECODE_INTERPRETER if you want to compile   */
  /* a bytecode interpreter in the TrueType driver.                        */
  /*                                                                       */
  /* By undefining this, you will only compile the code necessary to load  */
  /* TrueType glyphs without hinting.                                      */
  /*                                                                       */
  /*   Do not #undef this macro here, since the build system might         */
  /*   define it for certain configurations only.                          */
  /*                                                                       */
#define TT_CONFIG_OPTION_BYTECODE_INTERPRETER

/*************************************************************************/
  /*                                                                       */
  /* Define TT_CONFIG_OPTION_SUBPIXEL_HINTING if you want to compile       */
  /* subpixel hinting support into the TrueType driver.  This modifies the */
  /* TrueType hinting mechanism when anything but FT_RENDER_MODE_MONO is   */
  /* requested.                                                            */
  /*                                                                       */
  /* 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.                                  */
  /*                                                                       */
  /* There are three possible values.                                      */
  /*                                                                       */
  /* 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.                   */
  /*                                                                       */
  /*    The corresponding interpreter version is v38.                      */
  /*                                                                       */
  /* 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.                                                              */
  /*                                                                       */
  /*    The corresponding interpreter version is v40.                      */
  /*                                                                       */
  /* Value 3:                                                              */
  /*    Compile both, making both v38 and v40 available (the latter is the */
  /*    default).                                                          */
  /*                                                                       */
  /* 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').                                                   */
  /*                                                                       */
  /* This option requires TT_CONFIG_OPTION_BYTECODE_INTERPRETER to be      */
  /* defined.                                                              */
  /*                                                                       */
  /* [1] https://www.microsoft.com/typography/cleartype/truetypecleartype.aspx */
  /*                                                                       */
/* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING  1         */
#define TT_CONFIG_OPTION_SUBPIXEL_HINTING  2
/* #define TT_CONFIG_OPTION_SUBPIXEL_HINTING  ( 1 | 2 ) */

/*************************************************************************/
  /*                                                                       */
  /* Define TT_CONFIG_OPTION_COMPONENT_OFFSET_SCALED to compile the        */
  /* TrueType glyph loader to use Apple's definition of how to handle      */
  /* component offsets in composite glyphs.                                */
  /*                                                                       */
  /* Apple and MS disagree on the default behavior of component offsets    */
  /* in composites.  Apple says that they should be scaled by the scaling  */
  /* factors in the transformation matrix (roughly, it's more complex)     */
  /* while MS says they should not.  OpenType defines two bits in the      */
  /* composite flags array which can be used to disambiguate, but old      */
  /* fonts will not have them.                                             */
  /*                                                                       */
  /*   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

/*************************************************************************/
  /*                                                                       */
  /* Define TT_CONFIG_OPTION_GX_VAR_SUPPORT if you want to include         */
  /* support for Apple's distortable font technology (fvar, gvar, cvar,    */
  /* and avar tables).  This has many similarities to Type 1 Multiple      */
  /* Masters support.                                                      */
  /*                                                                       */
#define TT_CONFIG_OPTION_GX_VAR_SUPPORT

/*************************************************************************/
  /*                                                                       */
  /* Define TT_CONFIG_OPTION_BDF if you want to include support for        */
  /* an embedded `BDF ' table within SFNT-based bitmap formats.            */
  /*                                                                       */
#define TT_CONFIG_OPTION_BDF

/*************************************************************************/
  /*                                                                       */
  /* 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       ****/
  /****                                                                 ****/
  /*************************************************************************/
  /*************************************************************************/

/*************************************************************************/
  /*                                                                       */
  /* T1_MAX_DICT_DEPTH is the maximum depth of nest dictionaries and       */
  /* arrays in the Type 1 stream (see t1load.c).  A minimum of 4 is        */
  /* required.                                                             */
  /*                                                                       */
#define T1_MAX_DICT_DEPTH  5

/*************************************************************************/
  /*                                                                       */
  /* T1_MAX_SUBRS_CALLS details the maximum number of nested sub-routine   */
  /* calls during glyph loading.                                           */
  /*                                                                       */
#define T1_MAX_SUBRS_CALLS  16

/*************************************************************************/
  /*                                                                       */
  /* T1_MAX_CHARSTRING_OPERANDS is the charstring stack's capacity.  A     */
  /* minimum of 16 is required.                                            */
  /*                                                                       */
  /* The Chinese font MingTiEG-Medium (CNS 11643 character set) needs 256. */
  /*                                                                       */
#define T1_MAX_CHARSTRINGS_OPERANDS  256

/*************************************************************************/
  /*                                                                       */
  /* Define this configuration macro if you want to prevent the            */
  /* compilation of `t1afm', which is in charge of reading Type 1 AFM      */
  /* files into an existing face.  Note that if set, the T1 driver will be */
  /* unable to produce kerning distances.                                  */
  /*                                                                       */
#undef T1_CONFIG_OPTION_NO_AFM

/*************************************************************************/
  /*                                                                       */
  /* Define this configuration macro if you want to prevent the            */
  /* compilation of the Multiple Masters font support in the Type 1        */
  /* driver.                                                               */
  /*                                                                       */
#undef T1_CONFIG_OPTION_NO_MM_SUPPORT

/*************************************************************************/
  /*                                                                       */
  /* 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        ****/
  /****                                                                 ****/
  /*************************************************************************/
  /*************************************************************************/

/*************************************************************************/
  /*                                                                       */
  /* Using CFF_CONFIG_OPTION_DARKENING_PARAMETER_{X,Y}{1,2,3,4} it is      */
  /* 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 (file `ftdriver.h'), which allows the */
  /* control at run-time.                                                  */
  /*                                                                       */
  /* Do *not* undefine these macros!                                       */
  /*                                                                       */
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1   500
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1   400

#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2  1000
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2   275

#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3  1667
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3   275

#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4  2333
#define CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4     0

/*************************************************************************/
  /*                                                                       */
  /* CFF_CONFIG_OPTION_OLD_ENGINE controls whether the pre-Adobe CFF       */
  /* engine gets compiled into FreeType.  If defined, it is possible to    */
  /* switch between the two engines using the `hinting-engine' property of */
  /* the cff driver module.                                                */
  /*                                                                       */
/* #define CFF_CONFIG_OPTION_OLD_ENGINE */

/*************************************************************************/
  /*************************************************************************/
  /****                                                                 ****/
  /****         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     ****/
  /****                                                                 ****/
  /*************************************************************************/
  /*************************************************************************/

/*************************************************************************/
  /*                                                                       */
  /* Compile autofit module with CJK (Chinese, Japanese, Korean) script    */
  /* support.                                                              */
  /*                                                                       */
#define AF_CONFIG_OPTION_CJK

/*************************************************************************/
  /*                                                                       */
  /* 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

/*************************************************************************/
  /*                                                                       */
  /* Compile autofit module with warp hinting.  The idea of the warping    */
  /* code is to slightly scale and shift a glyph within a single dimension */
  /* so that as much of its segments are aligned (more or less) on the     */
  /* grid.  To find out the optimal scaling and shifting value, various    */
  /* parameter combinations are tried and scored.                          */
  /*                                                                       */
  /* 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 `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 */

/* */

/*
   * This macro is obsolete.  Support has been removed in FreeType
   * version 2.5.
   */
/* #define FT_CONFIG_OPTION_OLD_INTERNALS */

/*
   * 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

#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

/*
   * Check CFF darkening parameters.  The checks are the same as in function
   * `cff_property_set' in file `cffdrivr.c'.
   */
#if CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4 < 0   || \
                                                      \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 < 0   || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 < 0   || \
                                                      \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X1 >        \
      CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2     || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X2 >        \
      CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3     || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_X3 >        \
      CFF_CONFIG_OPTION_DARKENING_PARAMETER_X4     || \
                                                      \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y1 > 500 || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y2 > 500 || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y3 > 500 || \
    CFF_CONFIG_OPTION_DARKENING_PARAMETER_Y4 > 500
#error "Invalid CFF darkening parameters!"
#endif

FT_END_HEADER

#endif /* FTOPTION_H_ */

/* END */

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