Hi Antonio, wow - that's a substantial response! Thanks!
I did find a simple way to do it which suits my needs, though it's not perfect.
I added a category on NSSplitView (not pane - my bad) as follows:
@implementation NSSplitView (Animation)
+ (id) defaultAnimationForKey:(NSString *)key
{
if ([key isEqualToString:@"splitPosition"])
{
CAAnimation* anim = [CABasicAnimation animation];
anim.duration = 0.3;
return anim;
}
else
{
return [super defaultAnimationForKey:key];
}
}
- (void) setSplitPosition:(CGFloat) position
{
[self setPosition:position ofDividerAtIndex:0];
}
- (CGFloat) splitPosition
{
NSRect frame = [[[self subviews] objectAtIndex:0] frame];
if([self isVertical])
return NSMaxX( frame );
else
return NSMaxY( frame );
}
@end
This allows my new property 'splitPosition' to be animatable by the animator.
Its main drawback is that because it calls through to
setPosition:ofDividerAtIndex:, it will snap shut when it reaches the
appropriate threshold. For me that's OK as my minimum position is quite small,
but I guess you could, as you did, tell the delegate that animation is
happening so that it temporarily changes the threshold so that it doesn't snap.
It also assumes that there's only a single split, as it hard-codes index 0.
Used like this:
[[mySplitView animator] setSplitPosition:<whatever>];
--Graham
On 16/06/2011, at 4:05 PM, Antonio Nunes wrote:
> On 16 Jun 2011, at 03:48, Graham Cox wrote:
>
>> I'm using -setPosition:ofDividerAtIndex: and I call this using the view's
>> animator:
>>
>> [[mySplitPane animator] setPosition:position ofDividerAtIndex:0];
>>
>> But it doesn't animate and just jumps into position. I see other apps manage
>> this (e.g. Mail) so how's it done?
>
> Hi Graham,
>
> Having recently experienced the same limitation, I found we need to manually
> resize the subviews (through their animator). I posted a message here, on
> June 1st, titled "Animated Split View", in which I exposed a solution and
> asked for feedback on it (got none). Meanwhile I have improved the code,
> since I found the first iteration not to be robust enough. The new version
> follows:
>
> ==========
> @interface NSSplitView (NSSplitView_Animation)
>
> - (CGFloat)catPositionOfDividerAtIndex:(NSInteger)index;
> - (void)catAnimateDividerIndexes:(NSArray *)indexes toPositions:(NSArray
> *)newPositions;
> - (void)catAnimateDividerAtIndex:(NSInteger)index
> toPosition:(CGFloat)newPosition;
>
> @end
[]
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