NSEvent.PressureBehavior.primaryDeepDrag

A pressure gesture’s behavior begins on left mouse-down events. Two stages are supported, and a stage transition animation may occur when moving between stages—from stage 1 to stage 0, stage 1 to stage 2, stage 2 to stage 1, or stage 2 to stage 0. Actuations occur during the mouse-down and mouse-up events, as well as during the transitions up and down between stage 1 and stage 2, when this behavior is configured. This configuration is ideal for responding to force clicks during drag operations. Note that the pressure gesture operates on a separate event stream from the mouse events.

case primaryDeepDrag