Re: Deferring a selector until later, but before painting

FROM : John Stiles
DATE : Thu Mar 06 18:26:52 2008

Actually, in this case, it seems like a perfect fit for what I'm doing.
I'm already using a subclassed view anyway. I will definitely take a
look at -viewWillDraw:.

BTW, views don't actually have delegates—many control subclasses do,
e.g. NSTableView has one—but a plain NSView does not.

Thanks, Ken! I'll let you know if this resolves my issue. I highly
suspect that it will.

j o a r wrote:
>
> On Mar 6, 2008, at 8:32 AM, Ken Ferry wrote:
>

>> Or can you do your final setup in -viewWillDraw?
>>
>> For some kinds of problems, you could synchronously mark whatever
>> state you're interested as invalid, then resolve any invalidated
>> state in -viewWillDraw.  This would be an appropriate way to do
>> deferred layout, for example.

>
>
> I think it's unfortunate to have to resolve to subclassing for this
> type of problem - The OP might end up having to subclass several
> different NSControl subclasses to make it work. Perhaps NSView should
> provide some sort of notification or delegation scheme to supplement
> this method?
>
> j o a r
>
>
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