PCF_Glyph_Load	(	FT_GlyphSlot	slot,
		FT_Size	size,
		FT_UInt	glyph_index,
		FT_Int32	load_flags
	)
Definition at line 451 of file pcfdrivr.c.
  {
    PCF_Face    face   = (PCF_Face)FT_SIZE_FACE( size );
    FT_Stream   stream;
    FT_Error    error  = PCF_Err_Ok;
    FT_Bitmap*  bitmap = &slot->bitmap;
    PCF_Metric  metric;
    FT_Offset   bytes;

    FT_UNUSED( load_flags );


    FT_TRACE4(( "load_glyph %d ---", glyph_index ));

    if ( !face || glyph_index >= (FT_UInt)face->root.num_glyphs )
    {
      error = PCF_Err_Invalid_Argument;
      goto Exit;
    }

    stream = face->root.stream;

    if ( glyph_index > 0 )
      glyph_index--;

    metric = face->metrics + glyph_index;

    bitmap->rows       = metric->ascent + metric->descent;
    bitmap->width      = metric->rightSideBearing - metric->leftSideBearing;
    bitmap->num_grays  = 1;
    bitmap->pixel_mode = FT_PIXEL_MODE_MONO;

    FT_TRACE6(( "BIT_ORDER %d ; BYTE_ORDER %d ; GLYPH_PAD %d\n",
                  PCF_BIT_ORDER( face->bitmapsFormat ),
                  PCF_BYTE_ORDER( face->bitmapsFormat ),
                  PCF_GLYPH_PAD( face->bitmapsFormat ) ));

    switch ( PCF_GLYPH_PAD( face->bitmapsFormat ) )
    {
    case 1:
      bitmap->pitch = ( bitmap->width + 7 ) >> 3;
      break;

    case 2:
      bitmap->pitch = ( ( bitmap->width + 15 ) >> 4 ) << 1;
      break;

    case 4:
      bitmap->pitch = ( ( bitmap->width + 31 ) >> 5 ) << 2;
      break;

    case 8:
      bitmap->pitch = ( ( bitmap->width + 63 ) >> 6 ) << 3;
      break;

    default:
      return PCF_Err_Invalid_File_Format;
    }

    /* XXX: to do: are there cases that need repadding the bitmap? */
    bytes = bitmap->pitch * bitmap->rows;

    error = ft_glyphslot_alloc_bitmap( slot, bytes );
    if ( error )
      goto Exit;

    if ( FT_STREAM_SEEK( metric->bits )          ||
         FT_STREAM_READ( bitmap->buffer, bytes ) )
      goto Exit;

    if ( PCF_BIT_ORDER( face->bitmapsFormat ) != MSBFirst )
      BitOrderInvert( bitmap->buffer, bytes );

    if ( ( PCF_BYTE_ORDER( face->bitmapsFormat ) !=
           PCF_BIT_ORDER( face->bitmapsFormat )  ) )
    {
      switch ( PCF_SCAN_UNIT( face->bitmapsFormat ) )
      {
      case 1:
        break;

      case 2:
        TwoByteSwap( bitmap->buffer, bytes );
        break;

      case 4:
        FourByteSwap( bitmap->buffer, bytes );
        break;
      }
    }

    slot->format      = FT_GLYPH_FORMAT_BITMAP;
    slot->bitmap_left = metric->leftSideBearing;
    slot->bitmap_top  = metric->ascent;

    slot->metrics.horiAdvance  = metric->characterWidth << 6;
    slot->metrics.horiBearingX = metric->leftSideBearing << 6;
    slot->metrics.horiBearingY = metric->ascent << 6;
    slot->metrics.width        = ( metric->rightSideBearing -
                                   metric->leftSideBearing ) << 6;
    slot->metrics.height       = bitmap->rows << 6;

    ft_synthesize_vertical_metrics( &slot->metrics,
                                    ( face->accel.fontAscent +
                                      face->accel.fontDescent ) << 6 );

    FT_TRACE4(( " --- ok\n" ));

  Exit:
    return error;
  }
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