Re: Adaptable NSTableViewHeader
Re: Adaptable NSTableViewHeader
- Subject: Re: Adaptable NSTableViewHeader
- From: Nygard Steve <email@hidden>
- Date: Tue, 30 Oct 2007 18:25:29 -0600
On Oct 30, 2007, at 10:24 AM, Mattias Arrelid wrote:
[...]
Now, if I set my tableview's headerview to my custom subclass, and
place the tableview inside a NSScrollView, my custom tableview
header is displayed just fine. So far, so nice. Now let us assume
that the statistics are not that important for the user, so as she
begins to scroll everything that is visible in the clip view (table
header view + table view) is scrolled
The table view and the header view are each in different clip views.
You scroll through the height of the NSScrollView's documentView.
That's why the rows in your table view start scrolling before you
want them to.
I'd subclass NSScrollView to handle an additional view, for you're
statistics, which you want to appear above the header. Implement -
tile to put it in the right place. You may need to override -
reflectScrolledClipView:. You need to get the scroll view to use the
combined height of the document view and statistics view as the
height it scrolls through. When you scroll down, you need to first
shrink the visible height of the stats view, and use any left-over
for normal scrolling of the document view. Scrolling up is just the
opposite.
Clearly it would be a lot easier if you could put the stats under the
header view, either at the top or bottom of the actual table view,
but I think you can get it to work the way you want.
[...]
(2) the table view rows don't render correctly sometimes (see movie
- a part of row 11 gets stuck at the bottom of the view in the
beginning).
You need to call -setNeedsDisplay: when after calling setFrame:. I'm
guessing you need to do the same after calling -tile.
By the way, after looking at your code, NSDivideRect() is a handy
function:
NSDivideRect([self bounds], &lowerRect, &upperRect, [self
minimumHeight], NSMaxYEdge);
--
Steve
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