Catching Mac trackpad zoom

Question

Currently in my application i am catching the mouse wheel events and perform zoom in or out on a Canvas element. If user uses Mac and tries to perform zoom with the trackpad

Answer 1

As far as I know, the trackpad pinch doesn't trigger touch or gesture events, so Hammer.js will not detect it.

I was able to simulate pinch detection in Chrome by using Hamster.js. It will trigger the mouse wheel event and you can use the delta to determine if the user is zooming in or out.

This solution didn't work in Safari though.