sfnt.h

Qt/Embedded是一个多平台的C++图形用户界面应用程序框架

  typedef
  TT_Error (*TT_Get_PS_Name_Func)( TT_Face      face,
                                   TT_UInt      index,
                                   TT_String**  PSname );


  /*************************************************************************/
  /*                                                                       */
  /* <FuncType>                                                            */
  /*    TT_Load_Metrics                                                    */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Loads the horizontal or vertical header in a face object.          */
  /*                                                                       */
  /* <Input>                                                               */
  /*    face     :: A handle to the target face object.                    */
  /*    stream   :: The input stream.                                      */
  /*    vertical :: A boolean flag.  If set, load vertical metrics.        */
  /*                                                                       */
  /* <Return>                                                              */
  /*    TrueType error code.  0 means success.                             */
  /*                                                                       */
  typedef
  TT_Error  (*TT_Load_Metrics_Func)( TT_Face    face,
                                     FT_Stream  stream,
                                     TT_Bool    vertical );



  /*************************************************************************/
  /*                                                                       */
  /* <FuncType>                                                            */
  /*    TT_CharMap_Load_Func                                               */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Loads a given TrueType character map into memory.                  */
  /*                                                                       */
  /* <Input>                                                               */
  /*    face   :: A handle to the parent face object.                      */
  /*    stream :: A handle to the current stream object.                   */
  /*                                                                       */
  /* <InOut>                                                               */
  /*    cmap   :: A pointer to a cmap object.                              */
  /*                                                                       */
  /* <Return>                                                              */
  /*    Error code.  0 means success.                                      */
  /*                                                                       */
  /* <Note>                                                                */
  /*    The function assumes that the stream is already in use (i.e.,      */
  /*    opened).  In case of error, all partially allocated tables are     */
  /*    released.                                                          */
  /*                                                                       */
  typedef
  TT_Error  (*TT_CharMap_Load_Func)( TT_Face        face,
                                     TT_CMapTable*  cmap,
                                     FT_Stream      input );


  /*************************************************************************/
  /*                                                                       */
  /* <FuncType>                                                            */
  /*    TT_CharMap_Free_Func                                               */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Destroys a character mapping table.                                */
  /*                                                                       */
  /* <Input>                                                               */
  /*    face :: A handle to the parent face object.                        */
  /*    cmap :: A handle to a cmap object.                                 */
  /*                                                                       */
  /* <Return>                                                              */
  /*    Error code.  0 means success.                                      */
  /*                                                                       */
  typedef
  TT_Error  (*TT_CharMap_Free_Func)( TT_Face        face,
                                     TT_CMapTable*  cmap );


  /*************************************************************************/
  /*                                                                       */
  /* <FuncType>                                                            */
  /*    TT_Load_Table                                                      */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Loads a given TrueType table.                                      */
  /*                                                                       */
  /* <Input>                                                               */
  /*    face   :: A handle to the target face object.                      */
  /*    stream :: The input stream.                                        */
  /*                                                                       */
  /* <Return>                                                              */
  /*    TrueType error code.  0 means success.                             */
  /*                                                                       */
  /* <Note>                                                                */
  /*    The function will use `face->goto_table' to seek the stream to     */
  /*    the start of the table                                             */
  /*                                                                       */
  typedef
  TT_Error  (*TT_Load_Table_Func)( TT_Face    face,
                                   FT_Stream  stream );


  /*************************************************************************/
  /*                                                                       */
  /* <FuncType>                                                            */
  /*    TT_Load_Table                                                      */
  /*                                                                       */
  /* <Description>                                                         */
  /*    Loads a given TrueType table.                                      */
  /*                                                                       */
  /* <Input>                                                               */
  /*    face   :: A handle to the target face object.                      */
  /*    stream :: The input stream.                                        */
  /*                                                                       */
  /* <Return>                                                              */
  /*    TrueType error code.  0 means success.                             */
  /*                                                                       */
  /* <Note>                                                                */
  /*    The function will use `face->goto_table' to seek the stream to     */
  /*    the start of the table                                             */
  /*                                                                       */
  typedef
  void  (*TT_Free_Table_Func)( TT_Face  face );



  /*************************************************************************/
  /*                                                                       */
  /* <Struct>                                                              */
  /*    SFNT_Interface                                                     */
  /*                                                                       */
  /* <Description>                                                         */
  /*    this structure holds pointers to the functions used to load and    */
  /*    free the basic tables that are required in a `sfnt' font file.     */
  /*                                                                       */
  /* <Fields>                                                              */
  /*                                                                       */
  /*                                                                       */
  /*                                                                       */
  /*                                                                       */
  /*                                                                       */
  /*                                                                       */
  /*                                                                       */
  /*                                                                       */
  typedef struct  SFNT_Interface_
  {
    TT_Goto_Table_Func      goto_table;
  
    TT_Load_Any_Func        load_any;
    TT_Load_Format_Tag_Func load_format_tag;
    TT_Load_Directory_Func  load_directory;

    TT_Load_Table_Func      load_header;
    TT_Load_Metrics_Func    load_metrics;
    TT_Load_Table_Func      load_charmaps;
    TT_Load_Table_Func      load_max_profile;
    TT_Load_Table_Func      load_os2;
    TT_Load_Table_Func      load_psnames;

    TT_Load_Table_Func      load_names;
    TT_Free_Table_Func      free_names;

    /* optional tables */
    TT_Load_Table_Func      load_hdmx;
    TT_Free_Table_Func      free_hdmx;

    TT_Load_Table_Func      load_kerning;
    TT_Load_Table_Func      load_gasp;


    /* see `ttsbit.h' */
    TT_Load_Table_Func      load_sbits;
    TT_Load_SBit_Image_Func load_sbit_image;
    TT_Free_Table_Func      free_sbits;
    
    /* see `ttpost.h' */
    TT_Get_PS_Name_Func     get_psname;
    TT_Free_Table_Func      free_psnames;

    /* see `ttcmap.h' */
    TT_CharMap_Load_Func    load_charmap;
    TT_CharMap_Free_Func    free_charmap;
    
  } SFNT_Interface;

#endif /* SFNT_H */


/* END */