Prove if cursors location is within NSButton’s frame

Question

I have a custom NSButton class and want to check (within viewWillDraw) if the users current mouse location is inside the buttons frame.

I get the mouse position using NSEvent.mouseLocation(), but that gives me an absolute NSPoint in relation to the screen itself.

self.frame (= NSButton.frame) instead returns some relative coordinates, refering to the buttons superview.

As a result, self.frame.contains(NSEvent.mouseLocation()) does not work and I have no idea how to solve that!

Appreciate any help!

You can try to convert the mouse position to the button frame.. In ios uiview has method to convert points from one view to others and vis versa. — Dasem, Jan 21 '17 at 16:42
@Dasem Thanks for your reply! Couldn’t figure out how. `NSButton` isn’t a view. — ixany, Jan 21 '17 at 17:42

Vitaly Migunov · Accepted Answer · 2017-01-22T02:41:32.540

2

You can add NSTrackingArea with NSTrackingAreaOptions.MouseEnteredAndExited to your Button

Or you can use this code

Convert NSPoint to superview's coordinate system

let point = self.superview!.convert(self.window!.mouseLocationOutsideOfEventStream, from: nil)

And then just use self.frame.contains

if self.frame.contains(point)

edited Jan 22 '17 at 02:41

answered Jan 21 '17 at 17:01

Vitaly Migunov

Thanks for your reply! In my case, I especially need to check this within `viewWillDraw` because I the mouse may not entered and I want to change the buttons behaviour depending on that. – ixany Jan 21 '17 at 17:39
does it helps now ? – Vitaly Migunov Jan 23 '17 at 14:59

1 Answers1