Re: Problem on drawing custom scroller.
Re: Problem on drawing custom scroller.
- Subject: Re: Problem on drawing custom scroller.
- From: Sumin Kim <email@hidden>
- Date: Mon, 15 Jun 2009 12:54:36 +0900
Dear Lee,
Thanks for your reply and advice.
I will check and try as you recommended. In the mean time, I have another question from your mail.
If I do not use NSBezierPath, is there any other option to draw custom arrows and knob? Do you mean using image file?
Best regards,
On Mon, Jun 15, 2009 at 11:41 AM, Andy Lee
<email@hidden> wrote:
On Jun 14, 2009, at 9:03 PM, Sumin Kim wrote:
When I grab and move the knob in my custom scroller, it leaves its track over the knob slot. So, after I moved the knob several times, the knob slot show several horizontal lines-tracks of the knob- over it.
@implementation BSScroller
- (void)drawKnob {
NSLog(@"drawKnob ///// ");
NSRect knobRect = [self rectForPart:NSScrollerKnob];
If you want to stick with NSBezierPath, I see that replacing the line above with
NSRect knobRect = NSInsetRect([self rectForPart:NSScrollerKnob], 0.5, 0.5);
also works, though I don't know if that's the "right" way to do it.
There's probably a more precise explanation in the Cocoa Drawing Guide, but I'm too lazy to look for it:
<http://developer.apple.com/documentation/Cocoa/Conceptual/CocoaDrawingGuide/Introduction/Introduction.html>
--Andy
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