Example #1
0
tt_face_init( FT_Stream      stream,
              FT_Face        ttface,      /* TT_Face */
              FT_Int         face_index,
              FT_Int         num_params,
              FT_Parameter*  params )
{
    FT_Error      error;
    FT_Library    library;
    SFNT_Service  sfnt;
    TT_Face       face = (TT_Face)ttface;


    FT_TRACE2(( "TTF driver\n" ));

    library = ttface->driver->root.library;

    sfnt = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
    if ( !sfnt )
    {
        FT_ERROR(( "tt_face_init: cannot access `sfnt' module\n" ));
        error = FT_THROW( Missing_Module );
        goto Exit;
    }

    /* create input stream from resource */
    if ( FT_STREAM_SEEK( 0 ) )
        goto Exit;

    /* check that we have a valid TrueType file */
    error = sfnt->init_face( stream, face, face_index, num_params, params );

    /* Stream may have changed. */
    stream = face->root.stream;

    if ( error )
        goto Exit;

    /* We must also be able to accept Mac/GX fonts, as well as OT ones. */
    /* The 0x00020000 tag is completely undocumented; some fonts from   */
    /* Arphic made for Chinese Windows 3.1 have this.                   */
    if ( face->format_tag != 0x00010000L &&    /* MS fonts  */
            face->format_tag != 0x00020000L &&    /* CJK fonts for Win 3.1 */
            face->format_tag != TTAG_true   )     /* Mac fonts */
    {
        FT_TRACE2(( "  not a TTF font\n" ));
        goto Bad_Format;
    }

#ifdef TT_USE_BYTECODE_INTERPRETER
    ttface->face_flags |= FT_FACE_FLAG_HINTER;
#endif

    /* If we are performing a simple font format check, exit immediately. */
    if ( face_index < 0 )
        return FT_Err_Ok;

    /* Load font directory */
    error = sfnt->load_face( stream, face, face_index, num_params, params );
    if ( error )
        goto Exit;

    if ( tt_check_trickyness( ttface ) )
        ttface->face_flags |= FT_FACE_FLAG_TRICKY;

    error = tt_face_load_hdmx( face, stream );
    if ( error )
        goto Exit;

    if ( FT_IS_SCALABLE( ttface ) )
    {

#ifdef FT_CONFIG_OPTION_INCREMENTAL

        if ( !ttface->internal->incremental_interface )
            error = tt_face_load_loca( face, stream );
        if ( !error )
            error = tt_face_load_cvt( face, stream );
        if ( !error )
            error = tt_face_load_fpgm( face, stream );
        if ( !error )
            error = tt_face_load_prep( face, stream );

        /* Check the scalable flag based on `loca'. */
        if ( !ttface->internal->incremental_interface &&
                ttface->num_fixed_sizes                  &&
                face->glyph_locations                    &&
                tt_check_single_notdef( ttface )         )
        {
            FT_TRACE5(( "tt_face_init:"
                        " Only the `.notdef' glyph has an outline.\n"
                        "             "
                        " Resetting scalable flag to FALSE.\n" ));

            ttface->face_flags &= ~FT_FACE_FLAG_SCALABLE;
        }

#else /* !FT_CONFIG_OPTION_INCREMENTAL */

        if ( !error )
            error = tt_face_load_loca( face, stream );
        if ( !error )
            error = tt_face_load_cvt( face, stream );
        if ( !error )
            error = tt_face_load_fpgm( face, stream );
        if ( !error )
            error = tt_face_load_prep( face, stream );

        /* Check the scalable flag based on `loca'. */
        if ( ttface->num_fixed_sizes          &&
                face->glyph_locations            &&
                tt_check_single_notdef( ttface ) )
        {
            FT_TRACE5(( "tt_face_init:"
                        " Only the `.notdef' glyph has an outline.\n"
                        "             "
                        " Resetting scalable flag to FALSE.\n" ));

            ttface->face_flags &= ~FT_FACE_FLAG_SCALABLE;
        }

#endif /* !FT_CONFIG_OPTION_INCREMENTAL */

    }

#ifdef TT_CONFIG_OPTION_GX_VAR_SUPPORT

    {
        FT_Int  instance_index = face_index >> 16;


        if ( FT_HAS_MULTIPLE_MASTERS( ttface ) &&
                instance_index > 0                )
        {
            error = TT_Get_MM_Var( face, NULL );
            if ( error )
                goto Exit;

            if ( face->blend->mmvar->namedstyle )
            {
                FT_Memory  memory = ttface->memory;

                FT_Var_Named_Style*  named_style;
                FT_String*           style_name;


                /* in `face_index', the instance index starts with value 1 */
                named_style = face->blend->mmvar->namedstyle + instance_index - 1;
                error = sfnt->get_name( face,
                                        (FT_UShort)named_style->strid,
                                        &style_name );
                if ( error )
                    goto Exit;

                /* set style name; if already set, replace it */
                if ( face->root.style_name )
                    FT_FREE( face->root.style_name );
                face->root.style_name = style_name;

                /* finally, select the named instance */
                error = TT_Set_Var_Design( face,
                                           face->blend->mmvar->num_axis,
                                           named_style->coords );
                if ( error )
                    goto Exit;
            }
        }
    }

#endif /* TT_CONFIG_OPTION_GX_VAR_SUPPORT */

    /* initialize standard glyph loading routines */
    TT_Init_Glyph_Loading( face );

Exit:
    return error;

Bad_Format:
    error = FT_THROW( Unknown_File_Format );
    goto Exit;
}
Example #2
0
  tt_face_init( FT_Stream      stream,
                FT_Face        ttface,      /* TT_Face */
                FT_Int         face_index,
                FT_Int         num_params,
                FT_Parameter*  params )
  {
    FT_Error      error;
    FT_Library    library;
    SFNT_Service  sfnt;
    TT_Face       face = (TT_Face)ttface;


    library = face->root.driver->root.library;
    sfnt    = (SFNT_Service)FT_Get_Module_Interface( library, "sfnt" );
    if ( !sfnt )
      goto Bad_Format;

    /* create input stream from resource */
    if ( FT_STREAM_SEEK( 0 ) )
      goto Exit;

    /* check that we have a valid TrueType file */
    error = sfnt->init_face( stream, face, face_index, num_params, params );
    if ( error )
      goto Exit;

    /* We must also be able to accept Mac/GX fonts, as well as OT ones. */
    /* The 0x00020000 tag is completely undocumented; some fonts from   */
    /* Arphic made for Chinese Windows 3.1 have this.                   */
    if ( face->format_tag != 0x00010000L &&    /* MS fonts  */
         face->format_tag != 0x00020000L &&    /* CJK fonts for Win 3.1 */
         face->format_tag != TTAG_true   )     /* Mac fonts */
    {
      FT_TRACE2(( "[not a valid TTF font]\n" ));
      goto Bad_Format;
    }

#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
    face->root.face_flags |= FT_FACE_FLAG_HINTER;
#endif

    /* If we are performing a simple font format check, exit immediately. */
    if ( face_index < 0 )
      return TT_Err_Ok;

    /* Load font directory */
    error = sfnt->load_face( stream, face, face_index, num_params, params );
    if ( error )
      goto Exit;

    error = tt_face_load_hdmx( face, stream );
    if ( error )
      goto Exit;

    if ( face->root.face_flags & FT_FACE_FLAG_SCALABLE )
    {

#ifdef FT_CONFIG_OPTION_INCREMENTAL

      if ( !face->root.internal->incremental_interface )
        error = tt_face_load_loca( face, stream );
      if ( !error )
        error = tt_face_load_cvt( face, stream )  ||
                tt_face_load_fpgm( face, stream ) ||
                tt_face_load_prep( face, stream );

#else

      if ( !error )
        error = tt_face_load_loca( face, stream ) ||
                tt_face_load_cvt( face, stream )  ||
                tt_face_load_fpgm( face, stream ) ||
                tt_face_load_prep( face, stream );

#endif

    }

#ifdef TT_CONFIG_OPTION_UNPATENTED_HINTING

    /* Determine whether unpatented hinting is to be used for this face. */
    face->unpatented_hinting = FT_BOOL
       ( library->debug_hooks[ FT_DEBUG_HOOK_UNPATENTED_HINTING ] != NULL );

    {
      int  i;


      for ( i = 0; i < num_params && !face->unpatented_hinting; i++ )
        if ( params[i].tag == FT_PARAM_TAG_UNPATENTED_HINTING )
          face->unpatented_hinting = TRUE;
    }

#endif /* TT_CONFIG_OPTION_UNPATENTED_HINTING */

    /* initialize standard glyph loading routines */
    TT_Init_Glyph_Loading( face );

  Exit:
    return error;

  Bad_Format:
    error = TT_Err_Unknown_File_Format;
    goto Exit;
  }