Re: Figuring out what's causing redrawing
Re: Figuring out what's causing redrawing
- Subject: Re: Figuring out what's causing redrawing
- From: Scott Andrew <email@hidden>
- Date: Sun, 16 May 2010 09:07:07 -0700
Just a simple question. Do you have overlapping views going on? If you are overlapping a sibling that is being told to redraw, you will get redraw every time the sibling redraws..
Scott
On May 13, 2010, at 12:52 PM, Nick Zitzmann wrote:
> I've tried searching around but haven't found an answer to this. I have several views that are being constantly & apparently needlessly redrawn and I can't figure out why this is happening. How do I catch the culprit that is causing the views to be redrawn? The redrawing is appearing in the usual place, within a call to -[NSWindow displayIfNeeded] in the run loop.
>
> I already tried the following:
>
> 1. Breaking on -[NSView setNeedsDisplayInRect:], but -drawRect: kept being called anyway, so whatever is causing this is circumventing this method.
>
> 2. Observing the value of -[NSView needsDisplay], but the value never changes, and it keeps getting redisplayed anyway. Apparently the value is a perpetual YES...
>
> Nick Zitzmann
> <http://www.chronosnet.com/>
>
> _______________________________________________
>
> 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
_______________________________________________
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