Scrolling UIScrollView should update mouse entered/exited events for table view cells

[davisml]

No description provided.

[johndpope]

so from what I can see -

UIKitView : NSView
NSTrackingArea *_trackingArea;

this has a tracking area for entire window block configured by ->
_trackingArea = [[NSTrackingArea alloc] initWithRect:self.bounds options:NSTrackingCursorUpdate | NSTrackingMouseMoved | NSTrackingInVisibleRect | NSTrackingActiveInKeyWindow | NSTrackingMouseEnteredAndExited owner:self userInfo:nil];
[self addTrackingArea:_trackingArea];

which gets a callback when mouse goes on and off the screen

• (void)mouseEntered:(NSEvent *)theEvent {
  NSLog(@"mouseEntered");
  [self mouseMoved:theEvent];
  }
• (void)mouseExited:(NSEvent *)theEvent {
  NSLog(@"mouseExited");
  }

UIView doesn't have a addTrackingArea:_trackingArea - method.....
so an attempt to port this - is probably futile as used need to replicate the nsviews and the uitableview has a queue of cells and the problem would grow trying to duplicate the uiview stack to nsviews....

however - we do have point inside method in uikit.
and if we can track the current mouse position - along with pointInside - we may be able fudge it.
I'm going to take a look.

• (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
• (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event;

[johndpope]

ok - I got it.

In your subclass of uitableviewcell - override these methods for correct callbacks.

• (void)mouseEntered:(UIView *)view withEvent:(UIEvent *)event;
• (void)mouseMoved:(UITouch *)touch withEvent:(UIEvent *)event;
• (void)mouseExited:(UIView *)view withEvent:(UIEvent *)event;