Re: NSTrackingArea + cursorUpdate: problem
Re: NSTrackingArea + cursorUpdate: problem
- Subject: Re: NSTrackingArea + cursorUpdate: problem
- From: Nygard Steve <email@hidden>
- Date: Wed, 28 Nov 2007 20:52:16 -0700
On Nov 28, 2007, at 2:41 PM, Raphael Sebbe@Google wrote:
Hi,
I am trying to use the new cursor handling mecanism of Leopard.
My view has some regions (rects) inside of it where the cursor
should be changed, otherwise should be a regular arrow.
1. From the doc, it is unclear to me if NSTrackingCursorUpdate can
be used or not in that case (rect != bounds). At least what I get
is the cursorUpdate: method being invoked both when entering AND
leaving the area. Which means the cursor never becomes an arrow
again inside that view.
How should this be handled ?
Store the cursor in the user info when you set up the tracking areas,
and then you can do this:
- (void)cursorUpdate:(NSEvent *)event;
{
NSPoint hitPoint;
NSTrackingArea *trackingArea;
trackingArea = [event trackingArea];
hitPoint = [self convertPoint:[event locationInWindow]
fromView:nil];
if ([self mouse:hitPoint inRect:[trackingArea rect]]) {
[[[trackingArea userInfo] objectForKey:@"cursor"] set];
} else {
[[NSCursor arrowCursor] set];
}
}
2. Also the doc states that NSTrackingArea can overlap in different
views. What about overlapping in the same view ?
I don't know. You could try it and see what happens.
--
Steve
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