This is a pretty good proposal. But I think there are some gestures we can't differentiate like the flick from the drag and also the edge swipe for 3 or 4 fingers seems to complex to determine and to be using it's good to have so many gestures so that the user can select them according to their will.

Fixed some lines around the corner

Changed the border color to #eff0f1 and 50% opacity

Corrected the bright corner issue