/***************************************************************************/

/*                                                                         */

/*  t42drivr.c                                                             */

/*                                                                         */

/*    High-level Type 42 driver interface (body).                          */

/*                                                                         */

/*  Copyright 2002, 2003, 2004, 2006, 2007, 2009 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) As for Type1 fonts, CDevProc is not supported.                     */

  /* 4) The Metrics dictionary is not supported.                           */

  /* 5) 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

#include FT_SERVICE_XFREE86_NAME_H

#include FT_SERVICE_GLYPH_DICT_H

#include FT_SERVICE_POSTSCRIPT_NAME_H

#include FT_SERVICE_POSTSCRIPT_INFO_H

#undef  FT_COMPONENT

#define FT_COMPONENT  trace_t42

  /*

   *

   *  GLYPH DICT SERVICE

   *

   */

  static FT_Error

  t42_get_glyph_name( T42_Face    face,

                      FT_UInt     glyph_index,

                      FT_Pointer  buffer,

                      FT_UInt     buffer_max )

  {

    FT_STRCPYN( buffer, face->type1.glyph_names[glyph_index], buffer_max );

    return T42_Err_Ok;

  }

  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 ( glyph_name[0] == gname[0] && !ft_strcmp( glyph_name, gname ) )

        return (FT_UInt)ft_atol( (const char *)face->type1.charstrings[i] );

    }

    return 0;

  }

  static const FT_Service_GlyphDictRec  t42_service_glyph_dict =

  {

    (FT_GlyphDict_GetNameFunc)  t42_get_glyph_name,

    (FT_GlyphDict_NameIndexFunc)t42_get_name_index

  };

  /*

   *

   *  POSTSCRIPT NAME SERVICE

   *

   */

  static const char*

  t42_get_ps_font_name( T42_Face  face )

  {

    return (const char*)face->type1.font_name;

  }

  static const FT_Service_PsFontNameRec  t42_service_ps_font_name =

  {

    (FT_PsName_GetFunc)t42_get_ps_font_name

  };

  /*

   *

   *  POSTSCRIPT INFO SERVICE

   *

   */

  static FT_Error

  t42_ps_get_font_info( FT_Face          face,

                        PS_FontInfoRec*  afont_info )

  {

    *afont_info = ((T42_Face)face)->type1.font_info;

    return T42_Err_Ok;

  }

  static FT_Error

  t42_ps_get_font_extra( FT_Face           face,

                         PS_FontExtraRec*  afont_extra )

  {

    *afont_extra = ((T42_Face)face)->type1.font_extra;

    return T42_Err_Ok;

  }

  static FT_Int

  t42_ps_has_glyph_names( FT_Face  face )

  {

    FT_UNUSED( face );

    return 1;

  }

  static FT_Error

  t42_ps_get_font_private( FT_Face         face,

                           PS_PrivateRec*  afont_private )

  {

    *afont_private = ((T42_Face)face)->type1.private_dict;

    return T42_Err_Ok;

  }

  static const FT_Service_PsInfoRec  t42_service_ps_info =

  {

    (PS_GetFontInfoFunc)   t42_ps_get_font_info,

    (PS_GetFontExtraFunc)   t42_ps_get_font_extra,

    (PS_HasGlyphNamesFunc) t42_ps_has_glyph_names,

    (PS_GetFontPrivateFunc)t42_ps_get_font_private

  };

  /*

   *

   *  SERVICE LIST

   *

   */

  static const FT_ServiceDescRec  t42_services[] =

  {

    { FT_SERVICE_ID_GLYPH_DICT,           &t42_service_glyph_dict },

    { FT_SERVICE_ID_POSTSCRIPT_FONT_NAME, &t42_service_ps_font_name },

    { FT_SERVICE_ID_POSTSCRIPT_INFO,      &t42_service_ps_info },

    { FT_SERVICE_ID_XF86_NAME,            FT_XF86_FORMAT_TYPE_42 },

    { NULL, NULL }

  };

  static FT_Module_Interface

  T42_Get_Interface( FT_Driver         driver,

                     const FT_String*  t42_interface )

  {

    FT_UNUSED( driver );

    return ft_service_list_lookup( t42_services, t42_interface );

  }

  const FT_Driver_ClassRec  t42_driver_class =

  {

    {

      FT_MODULE_FONT_DRIVER       |

      FT_MODULE_DRIVER_SCALABLE   |

#ifdef TT_USE_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,

#ifdef FT_CONFIG_OPTION_OLD_INTERNALS

    ft_stub_set_char_sizes,

    ft_stub_set_pixel_sizes,

#endif

    (FT_Slot_LoadFunc)        T42_GlyphSlot_Load,

    (FT_Face_GetKerningFunc)  0,

    (FT_Face_AttachFunc)      0,

    (FT_Face_GetAdvancesFunc) 0,

    (FT_Size_RequestFunc)     T42_Size_Request,

    (FT_Size_SelectFunc)      T42_Size_Select

  };

/* END */