ftoption.h

freetype:字库引擎,执行程序,用于安装 2.3.5

  /*************************************************************************/
  /*************************************************************************/
  /****                                                                 ****/
  /****    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.  Note that there are   */
  /* important patent issues related to the use of the interpreter.        */
  /*                                                                       */
  /* 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 */


  /*************************************************************************/
  /*                                                                       */
  /* If you define TT_CONFIG_OPTION_UNPATENTED_HINTING, a special version  */
  /* of the TrueType bytecode interpreter is used that doesn't implement   */
  /* any of the patented opcodes and algorithms.  Note that the            */
  /* the TT_CONFIG_OPTION_UNPATENTED_HINTING macro is *ignored* if you     */
  /* define TT_CONFIG_OPTION_BYTECODE_INTERPRETER; with other words,       */
  /* either define TT_CONFIG_OPTION_BYTECODE_INTERPRETER or                */
  /* TT_CONFIG_OPTION_UNPATENTED_HINTING but not both at the same time.    */
  /*                                                                       */
  /* This macro is only useful for a small number of font files (mostly    */
  /* for Asian scripts) that require bytecode interpretation to properly   */
  /* load glyphs.  For all other fonts, this produces unpleasant results,  */
  /* thus the unpatented interpreter is never used to load glyphs from     */
  /* TrueType fonts unless one of the following two options is used.       */
  /*                                                                       */
  /*   - The unpatented interpreter is explicitly activated by the user    */
  /*     through the FT_PARAM_TAG_UNPATENTED_HINTING parameter tag         */
  /*     when opening the FT_Face.                                         */
  /*                                                                       */
  /*   - FreeType detects that the FT_Face corresponds to one of the       */
  /*     `trick' fonts (e.g., `Mingliu') it knows about.  The font engine  */
  /*     contains a hard-coded list of font names and other matching       */
  /*     parameters (see function `tt_face_init' in file                   */
  /*     `src/truetype/ttobjs.c').                                         */
  /*                                                                       */
  /* Here a sample code snippet for using FT_PARAM_TAG_UNPATENTED_HINTING. */
  /*                                                                       */
  /*   {                                                                   */
  /*     FT_Parameter  parameter;                                          */
  /*     FT_Open_Args  open_args;                                          */
  /*                                                                       */
  /*                                                                       */
  /*     parameter.tag = FT_PARAM_TAG_UNPATENTED_HINTING;                  */
  /*                                                                       */
  /*     open_args.flags      = FT_OPEN_PATHNAME | FT_OPEN_PARAMS;         */
  /*     open_args.pathname   = my_font_pathname;                          */
  /*     open_args.num_params = 1;                                         */
  /*     open_args.params     = &parameter;                                */
  /*                                                                       */
  /*     error = FT_Open_Face( library, &open_args, index, &face );        */
  /*     ...                                                               */
  /*   }                                                                   */
  /*                                                                       */
#define TT_CONFIG_OPTION_UNPATENTED_HINTING


  /*************************************************************************/
  /*                                                                       */
  /* Define TT_CONFIG_OPTION_INTERPRETER_SWITCH to compile the TrueType    */
  /* bytecode interpreter with a huge switch statement, rather than a call */
  /* table.  This results in smaller and faster code for a number of       */
  /* architectures.                                                        */
  /*                                                                       */
  /* Note however that on some compiler/processor combinations, undefining */
  /* this macro will generate faster, though larger, code.                 */
  /*                                                                       */
#define TT_CONFIG_OPTION_INTERPRETER_SWITCH


  /*************************************************************************/
  /*                                                                       */
  /* 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.                                             */
  /*                                                                       */
  /*   http://partners.adobe.com/asn/developer/opentype/glyf.html          */
  /*   http://fonts.apple.com/TTRefMan/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


  /*************************************************************************/
  /*************************************************************************/
  /****                                                                 ****/
  /****      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 maximal 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


  /*************************************************************************/
  /*************************************************************************/
  /****                                                                 ****/
  /****    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 script support.                       */
  /*                                                                       */
#define AF_CONFIG_OPTION_CJK

  /*************************************************************************/
  /*                                                                       */
  /* Compile autofit module with Indic script support.                     */
  /*                                                                       */
#define AF_CONFIG_OPTION_INDIC

  /* */


  /*
   * Define this variable if you want to keep the layout of internal
   * structures that was used prior to FreeType 2.2.  This also compiles in
   * a few obsolete functions to avoid linking problems on typical Unix
   * distributions.
   *
   * For embedded systems or building a new distribution from scratch, it
   * is recommended to disable the macro since it reduces the library's code
   * size and activates a few memory-saving optimizations as well.
   */
/* #define FT_CONFIG_OPTION_OLD_INTERNALS */


  /*
   * This variable is defined if either unpatented or native TrueType
   * hinting is requested by the definitions above.
   */
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#define  TT_USE_BYTECODE_INTERPRETER
#elif defined TT_CONFIG_OPTION_UNPATENTED_HINTING
#define  TT_USE_BYTECODE_INTERPRETER
#endif

FT_END_HEADER


#endif /* __FTOPTION_H__ */


/* END */