ftmodapi.h

winNT技术操作系统,国外开放的原代码和LIUX一样

  /*                                                                       */
  /* <Return>                                                              */
  /*    FreeType error code.  0 means success.                             */
  /*                                                                       */
  /* <Note>                                                                */
  /*    The module object is destroyed by the function in case of success. */
  /*                                                                       */
  FT_EXPORT( FT_Error )
  FT_Remove_Module( FT_Library  library,
                    FT_Module   module );


  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    FT_New_Library                                                     */
  /*                                                                       */
  /* <Description>                                                         */
  /*    This function is used to create a new FreeType library instance    */
  /*    from a given memory object.  It is thus possible to use libraries  */
  /*    with distinct memory allocators within the same program.           */
  /*                                                                       */
  /* <Input>                                                               */
  /*    memory   :: A handle to the original memory object.                */
  /*                                                                       */
  /* <Output>                                                              */
  /*    alibrary :: A pointer to handle of a new library object.           */
  /*                                                                       */
  /* <Return>                                                              */
  /*    FreeType error code.  0 means success.                             */
  /*                                                                       */
  FT_EXPORT( FT_Error )
  FT_New_Library( FT_Memory    memory,
                  FT_Library  *alibrary );


  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    FT_Done_Library                                                    */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Discards a given library object.  This closes all drivers and      */
  /*    discards all resource objects.                                     */
  /*                                                                       */
  /* <Input>                                                               */
  /*    library :: A handle to the target library.                         */
  /*                                                                       */
  /* <Return>                                                              */
  /*    FreeType error code.  0 means success.                             */
  /*                                                                       */
  FT_EXPORT( FT_Error )
  FT_Done_Library( FT_Library  library );

/* */

  typedef void
  (*FT_DebugHook_Func)( void*  arg );


  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    FT_Set_Debug_Hook                                                  */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Sets a debug hook function for debugging the interpreter of a font */
  /*    format.                                                            */
  /*                                                                       */
  /* <InOut>                                                               */
  /*    library    :: A handle to the library object.                      */
  /*                                                                       */
  /* <Input>                                                               */
  /*    hook_index :: The index of the debug hook.  You should use the     */
  /*                  values defined in `ftobjs.h', e.g.,                  */
  /*                  `FT_DEBUG_HOOK_TRUETYPE'.                            */
  /*                                                                       */
  /*    debug_hook :: The function used to debug the interpreter.          */
  /*                                                                       */
  /* <Note>                                                                */
  /*    Currently, four debug hook slots are available, but only two (for  */
  /*    the TrueType and the Type 1 interpreter) are defined.              */
  /*                                                                       */
  /*    Since the internal headers of FreeType are no longer installed,    */
  /*    the symbol `FT_DEBUG_HOOK_TRUETYPE' isn't available publicly.      */
  /*    This is a bug and will be fixed in a forthcoming release.          */
  /*                                                                       */
  FT_EXPORT( void )
  FT_Set_Debug_Hook( FT_Library         library,
                     FT_UInt            hook_index,
                     FT_DebugHook_Func  debug_hook );


  /*************************************************************************/
  /*                                                                       */
  /* <Function>                                                            */
  /*    FT_Add_Default_Modules                                             */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Adds the set of default drivers to a given library object.         */
  /*    This is only useful when you create a library object with          */
  /*    @FT_New_Library (usually to plug a custom memory manager).         */
  /*                                                                       */
  /* <InOut>                                                               */
  /*    library :: A handle to a new library object.                       */
  /*                                                                       */
  FT_EXPORT( void )
  FT_Add_Default_Modules( FT_Library  library );



  /**************************************************************************
   *
   * @section:
   *   ttengine
   *
   * @title:
   *   The TrueType Engine
   *
   * @abstract:
   *   TrueType bytecode support.
   *
   * @description:
   *   This section contains a function used to query the level of TrueType
   *   bytecode support compiled in this version of the library.
   *
   */


  /**************************************************************************
   *
   *  @enum:
   *     FT_TrueTypeEngineType
   *
   *  @description:
   *     A list of values describing which kind of TrueType bytecode
   *     engine is implemented in a given FT_Library instance.  It is used
   *     by the @FT_Get_TrueType_Engine_Type function.
   *
   *  @values:
   *     FT_TRUETYPE_ENGINE_TYPE_NONE ::
   *       The library doesn't implement any kind of bytecode interpreter.
   *
   *     FT_TRUETYPE_ENGINE_TYPE_UNPATENTED ::
   *       The library implements a bytecode interpreter that doesn't
   *       support the patented operations of the TrueType virtual machine.
   *
   *       Its main use is to load certain Asian fonts which position and
   *       scale glyph components with bytecode instructions.  It produces
   *       bad output for most other fonts.
   *
   *    FT_TRUETYPE_ENGINE_TYPE_PATENTED ::
   *       The library implements a bytecode interpreter that covers
   *       the full instruction set of the TrueType virtual machine.
   *       See the file `docs/PATENTS' for legal aspects.
   *
   *  @since:
   *       2.2
   *
   */
  typedef enum
  {
    FT_TRUETYPE_ENGINE_TYPE_NONE = 0,
    FT_TRUETYPE_ENGINE_TYPE_UNPATENTED,
    FT_TRUETYPE_ENGINE_TYPE_PATENTED

  } FT_TrueTypeEngineType;


  /**************************************************************************
   *
   *  @func:
   *     FT_Get_TrueType_Engine_Type
   *
   *  @description:
   *     Return a @FT_TrueTypeEngineType value to indicate which level of
   *     the TrueType virtual machine a given library instance supports.
   *
   *  @input:
   *     library ::
   *       A library instance.
   *
   *  @return:
   *     A value indicating which level is supported.
   *
   *  @since:
   *     2.2
   *
   */
  FT_EXPORT( FT_TrueTypeEngineType )
  FT_Get_TrueType_Engine_Type( FT_Library  library );


  /* */


FT_END_HEADER

#endif /* __FTMODAPI_H__ */


/* END */