Re: How to Optimize drawRect: for obscured views?

• Subject: Re: How to Optimize drawRect: for obscured views?
• From: René van Amerongen <email@hidden>
• Date: Sun, 12 Nov 2006 22:56:20 +0100
• Delivered-to: email@hidden
• Delivered-to: email@hidden

On 11/11/06, Andrew Farmer <email@hidden> wrote:

On 11 Nov 06, at 16:46, E. Wing wrote:
> I have a custom view which may have animation. I use an NSTimer to
> fire periodically and I check to see if anything is animating in my
> view. If so, I call setNeedsDisplay:YES.
>
> If I minimize or hide the application, I notice that drawRect: stops
> being called by the system (which I consider good). But if my
> view/window is completely obscured by another window (say another
> window from my app or from another application such as Safari) , I
> noticed that drawRect: is still being called.

Yes. That's intentional; while your view may not be exposed at that
given moment,

Sometimes your view could be behind a transparant window.

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Cocoa-dev mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
http://lists.apple.com/mailman/options/cocoa-dev/email@hidden

• Prev by Date: Re: Strange crash with multithreading and -[NSUserDefaults synchronize]
• Next by Date: Re: How to launch an IBAction
• Previous by thread: Re: How to Optimize drawRect: for obscured views?
• Next by thread: Re: How to Optimize drawRect: for obscured views?
• Index(es):
  • Date
  • Thread