Laptop GUI: Cannot zoom in with trackpad

[roomrys]

Bug description

I often zoom into videos when labeling, but after doing some development work with a trackpad, I notice that I cannot zoom on a trackpad.... Sure, most serious labelers might be using a mouse to label, but you're talking to someone who used Solidworks with just a trackpad for a whole summer (before eventually carrying a mouse around) - it's totally possible there are trackpad-labelers out there.

Expected behaviour

The trackpad should allow zoom-in/out.

Actual behaviour

Zoom does not work on the trackpad.

Your personal set up

• OS: mac 13.4

• Version(s): SLEAP v1.3.3, python 3.9

• SLEAP installation method (listed here):
  • Conda from package
  • Conda from source
  • pip package