I think I know what's the problem, it's this line.
[self addSubview:PatternRateLabel];
With each -drawRect call, NSTextField objects are not being redrawn
from scratch, they are added on top of the existing ones. So I end up
with thousands of them.
I guess I need to put this code in -awakeFromNib. And then, if needed,
change the text field strings or properties in -drawRect.
All the best,
Artemiy.
On 20 Dec 2010, at 16:25, Artemiy Pavlov wrote:
I have run Instruments and I see a ton of these calls:
-[NSWindow fieldEditor:forObject:]
So I indeed see that there's something I am not doing right with the
NSTextField.
On 20 Dec 2010, at 16:09, Mike Abdullah wrote:
Use Instruments to find out where the slowness lies. Come back once
you'e got more information and still don't know the cause.
On 20 Dec 2010, at 13:31, Artemiy Pavlov wrote:
Hi all!
I have a Cocoa view that reacts to -mouseDown and -mouseDragged
events and then draws something via -drawRect method.
It has about 50 objects that are either NSBezierCurve or
NSTextField. The problem is, after a few seconds of mouse
dragging, the view becomes very sluggish. I release all of the
NSTextField and NSString objects immediately after drawing them.
What could be causing this slow-down? I'd appreciate any advise.
Thanks and best wishes,
Artemiy.
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