NSScroller graphical crashes / delays
I have the following NSScroller subclass that creates a scrollbar with a rounded white handle and no arrows / slots (background):
@implementation IGScrollerVertical
- (void)drawKnob
{
NSRect knobRect = [self rectForPart:NSScrollerKnob];
NSRect newRect = NSMakeRect(knobRect.origin.x, knobRect.origin.y, knobRect.size.width - 4, knobRect.size.height);
NSBezierPath *path = [NSBezierPath bezierPathWithRoundedRect:newRect xRadius:7 yRadius:7];
[[NSColor whiteColor] set];
[path fill];
}
- (void)drawArrow:(NSScrollerArrow)arrow highlightPart:(int)flag
{
// We don't want arrows
}
- (void)drawKnobSlotInRect:(NSRect)rect highlight:(BOOL)highlight
{
// Don't want a knob background
}
@end
Everything works fine except I'm using a scroller. Watch this video:
I'm confused as to what I am doing wrong, any suggestions?
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