NSScrollView bug

[Andreas Höschler]

Hello all,

we just worked around a very annoying bug somewhere in the 
NSScrollView-NSSplitView-NSTableView code, that caused a bad effect 
when scrolling the table view with the horizonatl scroller to the right 
margin, but just change the order of the staements

               [scrollView setDocumentView:textView];
	      [scrollView setHasHorizontalScroller:([self 
boolValueForAttribute:@"hasHorizontalScroller"] == 0 ? NO : YES)];
	      [scrollView setHasVerticalScroller:([self 
boolValueForAttribute:@"hasVerticalScroller"] == 0 ? NO : YES)];

On GNUstep you must first set the documentVie wan dthen the scrollers. 
If you set the scrollers first you get crap. Since this problem can be 
easly worked around I am not motivated enough right now to find the 
piece of code that causes the problem but it has to do with the frame 
of the headerView (documentView of on splitView) and the frame of the 
tableView (documentView of anotehr splitView). The x-coordinates are 
not the same when a vertical scroller exists. This causes the problem 
(scrolling is constrained at the right margin). If anybody has a clue 
and knows where to fix this go ahead. We are happy for now that we have 
found a work around.

Thanks!

Regards,

 Andreas

PS: I don't know what the OPENSTEP spec says about it, but we found it 
very handy to have the following implementation of sizeLastColumnToFit 
in NSTableView.m.

- (void)sizeLastColumnToFit
{
   if ((_super_view != nil) && (_numberOfColumns > 0))
    {
      float excess_width;
      NSTableColumn *lastColumn = nil;
      int i;

      excess_width = NSMaxX ([self convertRect: [_super_view bounds]
                                      fromView: _super_view]);
      excess_width -= NSMaxX (_bounds);

      _tilingDisabled = YES;
      for (i = _numberOfColumns - 1 ; i >= 0 ; i--)
        {
         NSTableColumn *column = [_tableColumns objectAtIndex:i];
         if ([column isResizable])
           {
            float column_width = [column width];
            float contrib = MIN([column maxWidth] - [column width], 
excess_width);
            column_width += contrib;
            [column setWidth:column_width];
            excess_width -= contrib;
           }
         if (excess_width <= 0.0) break;
        }
      _tilingDisabled = NO;
      [self tile];
    }
}