On Dec 21, 2008, at 9:43 AM, Michael Ash wrote:
On Sun, Dec 21, 2008 at 11:49 AM, Scott Ribe <scott_r...@killerbytes.com
> wrote:
I guess what Mike is proposing is that redrawing in response to
setNeedsDisplay is only deferred until the end of handling the
current
event? (And therefore only improves things when there are multiple
calls on
the same view.) This is at least consistent with the documentation,
as far
as I know. But I had assumed that somewhere the system was putting
more of
an effort into deciding when to redraw marked views. And my
assumption, as
far as I can tell, was also consistent with the available
documentation.
That is indeed what I'm proposing. In other words, you'll always
have this:
event: invalidate view
view: redraw
event: invalidate view
view: redraw
And never this:
event: invalidate view
event: invalidate view
view: redraw
I've seen both -- you can't guarantee one or the other.
IIRC, user events have priority over system-generated events (like
redraws).
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