Vertically center (NSLevelIndicator) Cell?

In the IB palette (v3.0), it shows the various cells centered both
horizontally and vertically, but when used in a tableView, my cell
appears at the top, not vertically centered. Resizing the column only
auto-resizes the level cell elements.

Can you think of a way I can get the cell itself vertically centered as
in the IB palette?
--
/los "I was a teenage net-random."

slashlos wrote:
> In the IB palette (v3.0), it shows the various cells centered both
> horizontally and vertically, but when used in a tableView, my cell
> appears at the top, not vertically centered. Resizing the column only
> auto-resizes the level cell elements.
>
> Can you think of a way I can get the cell itself vertically centered as
> in the IB palette?

OK I subclassed NSLevelIndicatorCell to VALevelIndicatorcell taking a
cue from a similar issue with NSTextFieldCell as follows:

#import <Cocoa/Cocoa.h>
@interface VALevelIndicatorCell : NSLevelIndicatorCell
{
@private
BOOL _vAlign;
}
- (BOOL)isVerticallyAligned;
- (void)setVerticalAlignment:(BOOL)value;
@end

#import "VALevelIndicatorCell.h"
@implementation VALevelIndicatorCell
- (id) init
{
if (self = [super init])
{
_vAlign = TRUE;
}
return self;
}

- (void)drawWithFrame:(NSRect)frame inView:(NSView *)controlView
{
if (_vAlign)
{
int i = (frame.size.height - [self cellSize].height)/2;
frame.origin.y += i;
frame.size.height -= i;
}
[super drawWithFrame:frame inView:controlView];
}

- (BOOL) isVerticallyAligned
{
return _vAlign;
}

- (void) setVerticalAlignment:(BOOL)value
{
_vAlign = value;
}
@end

which visually appears centered but the cell doesn't respond to user
actions (i.e., acts like it's disabled). I had set the cell's class to
my class in IB, and primed the column's cell in my table view like this

- (void)awakeFromNib
{
// Vertically align our start column control
NSTableColumn * column = [tableView tableColumnWithIdentifier:@"1"];
VALevelIndicatorCell * cell = [column dataCell];
[cell setVerticalAlignment:YES];
}

So while I visually got the results I was seeking, the column's cell
isn't responsive; what'd I miss?
--
/los "I was a teenage net-random"