Re: [ft-devel] truetype metrics resize request question

[Steven Chu]

To clarify what I've observed with the Ahem font:

>From ttdriver.c:
  static FT_Error
  tt_size_request( FT_Size          size,
                   FT_Size_Request  req )
  {
/* Current value for size == previous calculated metrics */
    TT_Size   ttsize = (TT_Size)size;
    FT_Error  error  = TT_Err_Ok;

#ifdef TT_CONFIG_OPTION_EMBEDDED_BITMAPS
...
#endif /* TT_CONFIG_OPTION_EMBEDDED_BITMAPS */

    FT_Request_Metrics( size->face, req ); /* Calculates new metrics,
incorrect for Ahem */

    if ( FT_IS_SCALABLE( size->face ) ) /* Ahem is scalable */
      error = tt_size_reset( ttsize ); /* Calculates proper metrics
stored in ttsize */

/* ttsize->metrics contains proper metrics, size->metrics contains
incorrect metrics */

    return error;
  }


and my proposed change:
  tt_size_request( FT_Size          size,
                   FT_Size_Request  req )
  {
...
    if ( FT_IS_SCALABLE( size->face ) )
    {
      error = tt_size_reset( ttsize );
/* Fix: copy reset metrics from TT_Size to publically accessible
FT_Size metrics */
      ttsize->root.metrics = ttsize->metrics;
    }

    return error;
  }