UIScreen.mainScreen.scale on NSScreen

Question

I have a problem with CATextLayer cleaning. and with iOS the solution is:

textLayer.contentsScale = UIScreen.mainScreen.scale

But I can't found "scale" property on cocoa NSScreen

Note: Answer with Object-C or Swift are OK.

Answer 1

[[NSScreen mainScreen] backingScaleFactor] will give you the scaling factor for main display

Answer 2

I'm not sure it's the same as on iOS but NSScreen has backingScaleFactor, which might do the trick.

Answer 3

swift 4.2:

(NSScreen.main?.backingScaleFactor)!