Re: Subclass NSScroller prevents overlay scroller style
Re: Subclass NSScroller prevents overlay scroller style
- Subject: Re: Subclass NSScroller prevents overlay scroller style
- From: Steve Mills <email@hidden>
- Date: Wed, 18 Sep 2013 14:51:48 -0500
On Sep 18, 2013, at 13:35:02, Ken Thomases <email@hidden> wrote:
> This is documented in the Lion AppKit release notes.
> https://developer.apple.com/library/mac/releasenotes/Cocoa/AppKitOlderNotes#10_7Scroller
>
> A subclass of NSScroller uses legacy scroller style by default. A subclass which is aware of the newer overlay style and _meets certain other conditions_ may override +isCompatibleWithOverlayScrollers to return YES. The docs for that method explain the other conditions, but it sounds like your subclass won't pass because you're overriding -mouseDown:.
> https://developer.apple.com/library/mac/documentation/Cocoa/Reference/ApplicationKit/Classes/NSScroller_Class/Reference/Reference.html#//apple_ref/doc/uid/20000340-SW40
Ah, thanks everyone. I'd even read that a day or two ago and it promptly fell out of my brain. Too many things going on and I'm a bit wacko right now. :)
Yes, it sounds like it won't work because of the mouseDown override. But it actually does, since I only need to run my custom code when the scroller style is set to NSScrollerStyleLegacy, in which case it's not acting like an overlay scroller. So this works.
--
Steve Mills
office: 952-818-3871
home: 952-401-6255
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