cffdrivr.c

奇趣公司比较新的qt/emd版本

    FT_FACE_FIND_GLOBAL_SERVICE( face, psnames, POSTSCRIPT_CMAPS );
    if ( !psnames )
      return 0;

    for ( i = 0; i < cff->num_glyphs; i++ )
    {
      sid = charset->sids[i];

      if ( sid > 390 )
        name = cff_index_get_name( &cff->string_index, sid - 391 );
      else
        name = (FT_String *)psnames->adobe_std_strings( sid );

      if ( !name )
        continue;

      result = ft_strcmp( glyph_name, name );

      if ( sid > 390 )
        FT_FREE( name );

      if ( !result )
        return i;
    }

    return 0;
  }


  static const FT_Service_GlyphDictRec  cff_service_glyph_dict =
  {
    (FT_GlyphDict_GetNameFunc)  cff_get_glyph_name,
    (FT_GlyphDict_NameIndexFunc)cff_get_name_index,
  };


 /*
  *  POSTSCRIPT INFO SERVICE
  *
  */

  static FT_Int
  cff_ps_has_glyph_names( FT_Face  face )
  {
    return ( face->face_flags & FT_FACE_FLAG_GLYPH_NAMES ) > 0;
  }


  static FT_Error
  cff_ps_get_font_info( CFF_Face         face,
                        PS_FontInfoRec*  afont_info )
  {
    CFF_Font  cff   = (CFF_Font)face->extra.data;
    FT_Error  error = FT_Err_Ok;


    if ( cff && cff->font_info == NULL )
    {
      CFF_FontRecDict  dict = &cff->top_font.font_dict;
      PS_FontInfoRec  *font_info;
      FT_Memory        memory = face->root.memory;


      if ( FT_ALLOC( font_info, sizeof ( *font_info ) ) )
        goto Fail;

      font_info->version     = cff_index_get_sid_string( &cff->string_index,
                                                         dict->version,
                                                         cff->psnames );
      font_info->notice      = cff_index_get_sid_string( &cff->string_index,
                                                         dict->notice,
                                                         cff->psnames );
      font_info->full_name   = cff_index_get_sid_string( &cff->string_index,
                                                         dict->full_name,
                                                         cff->psnames );
      font_info->family_name = cff_index_get_sid_string( &cff->string_index,
                                                         dict->family_name,
                                                         cff->psnames );
      font_info->weight      = cff_index_get_sid_string( &cff->string_index,
                                                         dict->weight,
                                                         cff->psnames );
      font_info->italic_angle        = dict->italic_angle;
      font_info->is_fixed_pitch      = dict->is_fixed_pitch;
      font_info->underline_position  = (FT_Short)dict->underline_position;
      font_info->underline_thickness = (FT_Short)dict->underline_thickness;

      cff->font_info = font_info;
    }

    *afont_info = *cff->font_info;

  Fail:
    return error;
  }


  static const FT_Service_PsInfoRec  cff_service_ps_info =
  {
    (PS_GetFontInfoFunc)   cff_ps_get_font_info,
    (PS_HasGlyphNamesFunc) cff_ps_has_glyph_names,
    (PS_GetFontPrivateFunc)NULL         /* unsupported with CFF fonts */
  };


  /*
   * TT CMAP INFO
   *
   * If the charmap is a synthetic Unicode encoding cmap or
   * a Type 1 standard (or expert) encoding cmap, hide TT CMAP INFO
   * service defined in SFNT module.
   *
   * Otherwise call the service function in the sfnt module.
   *
   */
  static FT_Error
  cff_get_cmap_info( FT_CharMap    charmap,
                     TT_CMapInfo  *cmap_info )
  {
    FT_CMap   cmap  = FT_CMAP( charmap );
    FT_Error  error = CFF_Err_Ok;


    cmap_info->language = 0;

    if ( cmap->clazz != &cff_cmap_encoding_class_rec &&
         cmap->clazz != &cff_cmap_unicode_class_rec  )
    {
      FT_Face             face    = FT_CMAP_FACE( cmap );
      FT_Library          library = FT_FACE_LIBRARY( face );
      FT_Module           sfnt    = FT_Get_Module( library, "sfnt" );
      FT_Service_TTCMaps  service =
        (FT_Service_TTCMaps)ft_module_get_service( sfnt,
                                                   FT_SERVICE_ID_TT_CMAP );


      if ( service && service->get_cmap_info )
        error = service->get_cmap_info( charmap, cmap_info );
    }

    return error;
  }


  static const FT_Service_TTCMapsRec  cff_service_get_cmap_info =
  {
    (TT_CMap_Info_GetFunc)cff_get_cmap_info
  };


  /*************************************************************************/
  /*************************************************************************/
  /*************************************************************************/
  /****                                                                 ****/
  /****                                                                 ****/
  /****                D R I V E R  I N T E R F A C E                   ****/
  /****                                                                 ****/
  /****                                                                 ****/
  /*************************************************************************/
  /*************************************************************************/
  /*************************************************************************/

  static const FT_ServiceDescRec  cff_services[] =
  {
    { FT_SERVICE_ID_XF86_NAME,       FT_XF86_FORMAT_CFF },
    { FT_SERVICE_ID_POSTSCRIPT_INFO, &cff_service_ps_info },
#ifndef FT_CONFIG_OPTION_NO_GLYPH_NAMES
    { FT_SERVICE_ID_GLYPH_DICT,      &cff_service_glyph_dict },
#endif
    { FT_SERVICE_ID_TT_CMAP,         &cff_service_get_cmap_info },
    { NULL, NULL }
  };


  FT_CALLBACK_DEF( FT_Module_Interface )
  cff_get_interface( FT_Module    driver,       /* CFF_Driver */
                     const char*  module_interface )
  {
    FT_Module            sfnt;
    FT_Module_Interface  result;


    result = ft_service_list_lookup( cff_services, module_interface );
    if ( result != NULL )
      return  result;

    /* we pass our request to the `sfnt' module */
    sfnt = FT_Get_Module( driver->library, "sfnt" );

    return sfnt ? sfnt->clazz->get_interface( sfnt, module_interface ) : 0;
  }


  /* The FT_DriverInterface structure is defined in ftdriver.h. */

  FT_CALLBACK_TABLE_DEF
  const FT_Driver_ClassRec  cff_driver_class =
  {
    /* begin with the FT_Module_Class fields */
    {
      FT_MODULE_FONT_DRIVER       |
      FT_MODULE_DRIVER_SCALABLE   |
      FT_MODULE_DRIVER_HAS_HINTER,

      sizeof( CFF_DriverRec ),
      "cff",
      0x10000L,
      0x20000L,

      0,   /* module-specific interface */

      cff_driver_init,
      cff_driver_done,
      cff_get_interface,
    },

    /* now the specific driver fields */
    sizeof( TT_FaceRec ),
    sizeof( CFF_SizeRec ),
    sizeof( CFF_GlyphSlotRec ),

    cff_face_init,
    cff_face_done,
    cff_size_init,
    cff_size_done,
    cff_slot_init,
    cff_slot_done,

#ifdef FT_CONFIG_OPTION_OLD_INTERNALS
    ft_stub_set_char_sizes,
    ft_stub_set_pixel_sizes,
#endif

    Load_Glyph,

    cff_get_kerning,
    0,                      /* FT_Face_AttachFunc      */
    0,                      /* FT_Face_GetAdvancesFunc */

    cff_size_request,

#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
    cff_size_select
#else
    0                       /* FT_Size_SelectFunc      */
#endif
  };


/* END */