Re: Progress Indicators Spin vs Bar
Re: Progress Indicators Spin vs Bar
- Subject: Re: Progress Indicators Spin vs Bar
- From: James Merkel <email@hidden>
- Date: Mon, 20 Jun 2011 00:36:19 -0700
It turns out if I use setUsesThreadedAnimation:YES on the progress
indicator, the bar indicator animates.
The docs say this method sets a hint as to whether the receiver should
implement animation of the progress indicator in a separate thread. I
guess the hint is taken and the animation is performed in a separate
thread.
Jim Merkel
On Jun 19, 2011, at 1:38 PM, James Merkel wrote:
On Jun 19, 2011, at 1:27 PM, Quincey Morris wrote:
On Jun 19, 2011, at 13:14, James Merkel wrote:
ProgressController * progressController = nil;
progressController =[[ProgressController alloc] init];
NSLog(@"Progress window: %@\n", [progressController window]);
[progressController startProgressAnimation];
[progressController showWindow:self];
(Long processing)
[progressController close];
[progressController release];
So this works with the spinner but not the bar. Seems strange
because I thought the two progress indicators would work the same.
They don't. The spinning indicator animates itself, but the bar
animation depends on run loop iterations to drive the animation. If
"Long processing" means a loop, you're not going back to the run
loop. In those circumstances you must arrange for events to be
processed (run the run loop or dequeue events in a modal event loop).
Note that you probably want to do that anyway, because you probably
want to have a Cancel button on a long-running operation.
Ok thanks -- I didn't realize there was a difference in the way the
two progress indicators worked.
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