Re: NSScroller in layer backed view
Re: NSScroller in layer backed view
On 3 Apr 2012, at 08:47, Ryan Joseph wrote:
> I've just started using CoreAnimation for fading views and simple things like that but now I've run across a problem with NSScroller.
>
> In a view which is layer backed (setWantsLayer is on) I have a NSScrollView with a custom NSScroller subclass which performs drawing in drawRect:. When the root views setWantsLayer is on the drawRect: method of the NSScroller subclass is never called. The docs did say drawRect: will not be invoked in layer backed views but I'm confused because another NSView subclass in the same layer backed view is getting drawRect: invoked.
Are you sure that you haven't set any layers explicitly?
-drawRect should be called on all subviews when -wantsLayer is true.
When you create a layer hosting view (that is, assign a layer directly to the view) then -drawRect: will not be called.
Regards
Jonathan Mitchell
Mugginsoft LLP
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