Re: Embedding Custom NSView in NSScroller having strange effect on drawRect calls.
Re: Embedding Custom NSView in NSScroller having strange effect on drawRect calls.
- Subject: Re: Embedding Custom NSView in NSScroller having strange effect on drawRect calls.
- From: Michael Ash <email@hidden>
- Date: Fri, 26 Feb 2010 01:01:37 -0500
On Thu, Feb 25, 2010 at 3:00 AM, Billy Flatman <email@hidden> wrote:
>>>> Hi all,
>>>>
>>>> I've written a custom view and done some optimisation of the drawing calls so only the exact areas that need redrawing are passed to the 'setNeedsDisplayInRect' function.
>>>>
>>>> All was working well, until I embedded my view into an NSScroller.
>>>>
>>>> Since then my custom view seems to be being invalidated by grid sections.
>>>>
>>>> I've included a link to some pics to try and better show.
>>>>
>>>> http://www.flickr.com/photos/47616059@N08/sets/72157623505127258/
>>>>
>>>> I added the green borders around the dirtyRect area to better show the problem.
Is your view layer-backed, either directly or by being a subview of
one which is explicitly layer-backed? If so, then it will
automatically become backed by a CATiledLayer once it's embedded in a
scroll view, which would cause exactly the sort of thing you're
seeing.
Mike
_______________________________________________
Cocoa-dev mailing list (email@hidden)
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:
This email sent to email@hidden