Alvaro alnaranjo

Reliable mouseEnter/Exit for SwiftUI

On Mac, SwiftUI's .onHover closure is not always called on mouse exit, particularly with high cursor velocity. A grid of targets or with finer target shapes will often have multiple targets falsely active after the mouse has moved on.

It is easy to run back to AppKit's safety. Below is a SwiftUI-like modifier for reliable mouse-tracking. You can easily adapt it for other mouse tracking needs.

import SwiftUI

	# Generate PKCS#8 Keys

	openssl genrsa -out keypair.pem 2048
	openssl rsa -in keypair.pem -pubout -out public.key
	openssl pkcs8 -topk8 -inform PEM -outform PEM -nocrypt -in keypair.pem -out private.key

	# Copy keys as single line

	awk -v ORS='\\n' '1' public.key \| pbcopy
	awk -v ORS='\\n' '1' private.pub \| pbcopy