static FT_Error pfr_glyph_load_compound	(	PFR_Glyph	glyph,
		FT_Byte *	p,
		FT_Byte *	limit
	)		`[static]`
Definition at line 557 of file pfrgload.c.
Referenced by pfr_glyph_load_rec().
  {
    FT_Error        error  = PFR_Err_Ok;
    FT_GlyphLoader  loader = glyph->loader;
    FT_Memory       memory = loader->memory;
    PFR_SubGlyph    subglyph;
    FT_UInt         flags, i, count, org_count;
    FT_Int          x_pos, y_pos;


    PFR_CHECK( 1 );
    flags = PFR_NEXT_BYTE( p );

    /* test for composite glyphs */
    if ( !( flags & PFR_GLYPH_IS_COMPOUND ) )
      goto Failure;

    count = flags & 0x3F;

    /* ignore extra items when present */
    /*                                 */
    if ( flags & PFR_GLYPH_EXTRA_ITEMS )
    {
      error = pfr_extra_items_skip( &p, limit );
      if (error) goto Exit;
    }

    /* we can't rely on the FT_GlyphLoader to load sub-glyphs, because   */
    /* the PFR format is dumb, using direct file offsets to point to the */
    /* sub-glyphs (instead of glyph indices).  Sigh.                     */
    /*                                                                   */
    /* For now, we load the list of sub-glyphs into a different array    */
    /* but this will prevent us from using the auto-hinter at its best   */
    /* quality.                                                          */
    /*                                                                   */
    org_count = glyph->num_subs;

    if ( org_count + count > glyph->max_subs )
    {
      FT_UInt  new_max = ( org_count + count + 3 ) & (FT_UInt)-4;


      /* we arbitrarily limit the number of subglyphs */
      /* to avoid endless recursion                   */
      if ( new_max > 64 )
      {
        error = PFR_Err_Invalid_Table;
        FT_ERROR(( "pfr_glyph_load_compound:"
                   " too many compound glyphs components\n" ));
        goto Exit;
      }

      if ( FT_RENEW_ARRAY( glyph->subs, glyph->max_subs, new_max ) )
        goto Exit;

      glyph->max_subs = new_max;
    }

    subglyph = glyph->subs + org_count;

    for ( i = 0; i < count; i++, subglyph++ )
    {
      FT_UInt  format;


      x_pos = 0;
      y_pos = 0;

      PFR_CHECK( 1 );
      format = PFR_NEXT_BYTE( p );

      /* read scale when available */
      subglyph->x_scale = 0x10000L;
      if ( format & PFR_SUBGLYPH_XSCALE )
      {
        PFR_CHECK( 2 );
        subglyph->x_scale = PFR_NEXT_SHORT( p ) << 4;
      }

      subglyph->y_scale = 0x10000L;
      if ( format & PFR_SUBGLYPH_YSCALE )
      {
        PFR_CHECK( 2 );
        subglyph->y_scale = PFR_NEXT_SHORT( p ) << 4;
      }

      /* read offset */
      switch ( format & 3 )
      {
      case 1:
        PFR_CHECK( 2 );
        x_pos = PFR_NEXT_SHORT( p );
        break;

      case 2:
        PFR_CHECK( 1 );
        x_pos += PFR_NEXT_INT8( p );
        break;

      default:
        ;
      }

      switch ( ( format >> 2 ) & 3 )
      {
      case 1:
        PFR_CHECK( 2 );
        y_pos = PFR_NEXT_SHORT( p );
        break;

      case 2:
        PFR_CHECK( 1 );
        y_pos += PFR_NEXT_INT8( p );
        break;

      default:
        ;
      }

      subglyph->x_delta = x_pos;
      subglyph->y_delta = y_pos;

      /* read glyph position and size now */
      if ( format & PFR_SUBGLYPH_2BYTE_SIZE )
      {
        PFR_CHECK( 2 );
        subglyph->gps_size = PFR_NEXT_USHORT( p );
      }
      else
      {
        PFR_CHECK( 1 );
        subglyph->gps_size = PFR_NEXT_BYTE( p );
      }

      if ( format & PFR_SUBGLYPH_3BYTE_OFFSET )
      {
        PFR_CHECK( 3 );
        subglyph->gps_offset = PFR_NEXT_LONG( p );
      }
      else
      {
        PFR_CHECK( 2 );
        subglyph->gps_offset = PFR_NEXT_USHORT( p );
      }

      glyph->num_subs++;
    }

  Exit:
    return error;

  Failure:
  Too_Short:
    error = PFR_Err_Invalid_Table;
    FT_ERROR(( "pfr_glyph_load_compound: invalid glyph data\n" ));
    goto Exit;
  }
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