kc3-lang/freetype/src/truetype/ttdriver.h

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• Hash : 10effdf6
  Author :
  Date : 1999-12-29T00:22:24
  

  Added the rules files `module.mk' to "sfnt", "truetype" and "type1" to reflect the new modules/drivers list management performed through the file `freetype2/config/modules.mk' Changed the driver header files to reflect the new modules/drivers list management. We get rid, at last, of the infamous pre-processor tricks used to build the list at compile time. `src/base/ftinit.c' is also modified to reflect the changes..

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• src/truetype/ttdriver.h

• /***************************************************************************/
  /*                                                                         */
  /*  ttdriver.h                                                             */
  /*                                                                         */
  /*    High-level TrueType driver interface (specification).                */
  /*                                                                         */
  /*  Copyright 1996-1999 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 TTDRIVER_H
  #define TTDRIVER_H
  
  #include <freetype.h>
  #include <ftdriver.h>
  #include <ttobjs.h>
  #include <tterrors.h>
  #include <ttnameid.h>
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <FuncType>                                                            */
    /*    TTDriver_getFontData                                               */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Returns either a single font table or the whole font file into     */
    /*    caller's memory.  This function mimics the GetFontData() API       */
    /*    function found in Windows.                                         */
    /*                                                                       */
    /* <Input>                                                               */
    /*    face   :: A handle to the source TrueType face object.             */
    /*                                                                       */
    /*    tag    :: A 32-bit integer used to name the table you want to      */
    /*              read.  Use the macro MAKE_TT_TAG (defined in freetype.h) */
    /*              to create one.  Use the value 0 if you want to access    */
    /*              the whole file instead.                                  */
    /*                                                                       */
    /*    offset :: The offset from the start of the table or file from      */
    /*              which you want to read bytes.                            */
    /*                                                                       */
    /*    buffer :: The address of the target/read buffer where data will be */
    /*              copied.                                                  */
    /*                                                                       */
    /* <InOut>                                                               */
    /*    length :: The length in bytes of the data to read.  If it is set   */
    /*              to 0 when this function is called, it will return        */
    /*              immediately, setting the value of `length' to the        */
    /*              requested table's size (or the whole font file if the    */
    /*              tag is 0).  It is thus possible to allocate and read an  */
    /*              arbitrary table in two successive calls.                 */
    /* <Return>                                                              */
    /*    TrueType error code.  0 means success.                             */
    /*                                                                       */
    typedef TT_Error  (*TTDriver_getFontData)( TT_Face   face,
                                               TT_ULong  tag,
                                               TT_ULong  offset,
                                               void*     buffer,
                                               TT_Long*  length );
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <FuncType>                                                            */
    /*    TTDriver_getFaceWidths                                             */
    /*                                                                       */
    /* <Description>                                                         */
    /*    Returns the widths and/or heights of a given range of glyph from   */
    /*    a face.                                                            */
    /*                                                                       */
    /* <Input>                                                               */
    /*    face        :: A handle to the source FreeType face object.        */
    /*                                                                       */
    /*    first_glyph :: The first glyph in the range.                       */
    /*                                                                       */
    /*    last_glyph  :: The last glyph in the range.                        */
    /*                                                                       */
    /* <Output>                                                              */
    /*    widths      :: The address of the table receiving the widths       */
    /*                   expressed in font units (UShorts).  Set this        */
    /*                   parameter to NULL if you're not interested in these */
    /*                   values.                                             */
    /*                                                                       */
    /*    heights     :: The address of the table receiving the heights      */
    /*                   expressed in font units (UShorts).  Set this        */
    /*                   parameter to NULL if you're not interested in these */
    /*                   values.                                             */
    /*                                                                       */
    /* <Return>                                                              */
    /*    Error code.  0 means success.                                      */
    /*                                                                       */
    typedef TT_Error  (*TTDriver_getFaceWidths)( TT_Face     face,
                                                 TT_UShort   first_glyph,
                                                 TT_UShort   last_glyph,
                                                 TT_UShort*  widths,
                                                 TT_UShort*  heights );
  
  
  
    /*************************************************************************/
    /*                                                                       */
    /* <Struct>                                                              */
    /*    TT_DriverInterface                                                 */
    /*                                                                       */
    /* <Description>                                                         */
    /*    The TrueType-specific interface of this driver.  Note that some of */
    /*    the methods defined here are optional, as they're only used for    */
    /*    for specific tasks of the driver.                                  */
    /*                                                                       */
    /* <Fields>                                                              */
    /*    get_font_data   :: See the declaration of TTDriver_getFontData().  */
    /*    get_face_widths :: See the declaration of                          */
    /*                       TTDriver_getFaceWidths().                       */
    /*                                                                       */
    typedef struct  TT_DriverInterface_
    {
      TTDriver_getFontData    get_font_data;
      TTDriver_getFaceWidths  get_face_widths;
  
    } TT_DriverInterface;
  
  
    EXPORT_DEF
    const FT_DriverInterface  tt_driver_interface;
  
  
    EXPORT_DEF
    const TT_DriverInterface  tt_format_interface;
  
  #endif /* TTDRIVER_H */
  
  
  /* END */
  

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