kc3-lang/freetype/src/type42/t42drivr.c

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• Hash : 3e19d85d
  Author :
  Date : 2002-07-17T21:52:20
  

  * include/freetype/config/ftoption.h, include/freetype/internal/tttypes.h, src/base/ftobjs.c, src/bdf/bdfdrivr.c, src/cff/cffobjs.c, src/pcf/pcfdrivr.c, src/sfnt/sfobjs.c, src/sfnt/ttcmap0.c, src/sfnt/ttcmap0.h, src/sfnt/ttload.c, src/type1/t1objs.c, src/type42/t42objs.c, src/winfonts/winfnt.c: code cleanup, FT_CONFIG_OPTION_USE_CMAPS is now the default

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• src/type42/t42drivr.c

• /***************************************************************************/
  /*                                                                         */
  /*  t42drivr.c                                                             */
  /*                                                                         */
  /*    High-level Type 42 driver interface (body).                          */
  /*                                                                         */
  /*  Copyright 2002 by Roberto Alameda.                                     */
  /*                                                                         */
  /*  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.                                        */
  /*                                                                         */
  /***************************************************************************/
  
  
    /*************************************************************************/
    /*                                                                       */
    /* This driver implements Type42 fonts as described in the               */
    /* Technical Note #5012 from Adobe, with these limitations:              */
    /*                                                                       */
    /* 1) CID Fonts are not currently supported.                             */
    /* 2) Incremental fonts making use of the GlyphDirectory keyword         */
    /*    will be loaded, but the rendering will be using the TrueType       */
    /*    tables.                                                            */
    /* 3) The sfnts array is expected to be ASCII, not binary.               */
    /* 4) As for Type1 fonts, CDevProc is not supported.                     */
    /* 5) The Metrics dictionary is not supported.                           */
    /* 6) AFM metrics are not supported.                                     */
    /*                                                                       */
    /* In other words, this driver supports Type42 fonts derived from        */
    /* TrueType fonts in a non-CID manner, as done by usual conversion       */
    /* programs.                                                             */
    /*                                                                       */
    /*************************************************************************/
  
  
  #include "t42drivr.h"
  #include "t42objs.h"
  #include "t42error.h"
  #include FT_INTERNAL_DEBUG_H
  
  
  #undef  FT_COMPONENT
  #define FT_COMPONENT  trace_t42
  
  
    static FT_Error
    t42_get_glyph_name( T42_Face    face,
                        FT_UInt     glyph_index,
                        FT_Pointer  buffer,
                        FT_UInt     buffer_max )
    {
      FT_String*  gname;
  
  
      gname = face->type1.glyph_names[glyph_index];
  
      if ( buffer_max > 0 )
      {
        FT_UInt  len = (FT_UInt)( ft_strlen( gname ) );
  
  
        if ( len >= buffer_max )
          len = buffer_max - 1;
  
        FT_MEM_COPY( buffer, gname, len );
        ((FT_Byte*)buffer)[len] = 0;
      }
  
      return T42_Err_Ok;
    }
  
  
    static const char*
    t42_get_ps_name( T42_Face  face )
    {
      return (const char*)face->type1.font_name;
    }
  
  
    static FT_UInt
    t42_get_name_index( T42_Face    face,
                        FT_String*  glyph_name )
    {
      FT_Int      i;
      FT_String*  gname;
  
  
      for ( i = 0; i < face->type1.num_glyphs; i++ )
      {
        gname = face->type1.glyph_names[i];
  
        if ( !ft_strcmp( glyph_name, gname ) )
          return ft_atoi( (const char *)face->type1.charstrings[i] );
      }
  
      return 0;
    }
  
  
    static FT_Module_Interface
    T42_Get_Interface( FT_Driver         driver,
                       const FT_String*  t42_interface )
    {
      FT_UNUSED( driver );
  
      /* Any additional interface are defined here */
      if (ft_strcmp( (const char*)t42_interface, "glyph_name" ) == 0 )
        return (FT_Module_Interface)t42_get_glyph_name;
  
      if ( ft_strcmp( (const char*)t42_interface, "name_index" ) == 0 )
        return (FT_Module_Interface)t42_get_name_index;
  
      if ( ft_strcmp( (const char*)t42_interface, "postscript_name" ) == 0 )
        return (FT_Module_Interface)t42_get_ps_name;
  
      return 0;
    }
  
  
    const FT_Driver_ClassRec  t42_driver_class =
    {
      {
        ft_module_font_driver      |
        ft_module_driver_scalable  |
  #ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
        ft_module_driver_has_hinter,
  #else
        0,
  #endif
  
        sizeof ( T42_DriverRec ),
  
        "type42",
        0x10000L,
        0x20000L,
  
        0,    /* format interface */
  
        (FT_Module_Constructor)T42_Driver_Init,
        (FT_Module_Destructor) T42_Driver_Done,
        (FT_Module_Requester)  T42_Get_Interface,
      },
  
      sizeof ( T42_FaceRec ),
      sizeof ( T42_SizeRec ),
      sizeof ( T42_GlyphSlotRec ),
  
      (FT_Face_InitFunc)        T42_Face_Init,
      (FT_Face_DoneFunc)        T42_Face_Done,
      (FT_Size_InitFunc)        T42_Size_Init,
      (FT_Size_DoneFunc)        T42_Size_Done,
      (FT_Slot_InitFunc)        T42_GlyphSlot_Init,
      (FT_Slot_DoneFunc)        T42_GlyphSlot_Done,
  
      (FT_Size_ResetPointsFunc) T42_Size_SetChars,
      (FT_Size_ResetPixelsFunc) T42_Size_SetPixels,
      (FT_Slot_LoadFunc)        T42_GlyphSlot_Load,
  
      (FT_Face_GetKerningFunc)  0,
      (FT_Face_AttachFunc)      0,
  
      (FT_Face_GetAdvancesFunc) 0
    };
  
  
  /* END */
  

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