On Jan 6, 2014, at 11:54 AM, Fritz Anderson <fri...@manoverboard.org> wrote: > On 4 Jan 2014, at 1:38 PM, thatsanicehatyouh...@me.com wrote: > > I like your user name. > >> I have a couple of questions about using auto layout (AL) with NSSplitView >> and NSScrollView. I have watched the (excellent) WWDC videos from 2012, but >> am having problems. >> >> I'm trying to implement an NSSplitView > > [… that collapses one of the views if the user resizes it below a set > minimum.] > > The next thing I’d try (meaning I have no experience and no time to make the > experiment; others’ solutions would trump mine; and I seem to remember this > is a solved problem to be found in the archives of this list, Stack Overflow, > or [ugh] the Developer Forums) is to see whether listening to the collapsing > view’s NSFrameDidChangeNotification was of help. If the frame goes below > minimum width, replace the width constraint with a zero.
[same disclaimers as Fritz] As far as I know (see disclaimers), there's no reason you can't implement split view delegate methods just because you're using Auto Layout, as long as you aren't calling setFrame:. I would guess it's perfectly all right to implement splitView:constrainSplitPosition:ofSubviewAt:, examine the proposedPosition argument, and allow the view's width to be either zero or >= the minimum width but not in between. You might have to fiddle with constraints for the reason Fritz gives: > Constraints for contained views would tend to push the collapsed view’s width > out, but reducing the priorities of some of the constraints on the views that > would push back should take care of that. You could also add a *higher*-priority constraint that says the collapsed view's width must be 0, and this would trump the constraints that tend to push back. I think. --Andy _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
