Ah! I have the solution of solutions right here! Run xfce4-keyboard-settings and click on “Application Shortcuts”. Then define your own custom keyboard hotkeys! I set the following:
Meta+jis set to runxrandr --output None-1 --panning 1280x1280Meta+uis set to runxrandr --output None-1 --panning 0x0
Then I can toggle panning on & off with a quick keystroke!
Note that I use “None-1” here because when I run
xrandr --listmonitorsI see mine is called “None-1”