On Leopard, this solution works perfectly. I get a chance to update my
view right before it draws, which is exactly what the doctor ordered.
Any way to get this on Tiger or am I just out of luck?
John Stiles wrote:
Oh, wait… this requires Leopard :|
Is there anything that works with Tiger? I'm trying to avoid Leopard
dependencies when there are easy substitutes.
John Stiles wrote:
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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