drag plugin touch and pen options

[WillH0lt]

Dragging works great for touch and pen pointerTypes, but there's no way to disable them and still keep mouse dragging. I'm creating a drawing app and I'm looking for a setting where:

dragging is enabled = right-mouse button and two finger drag
dragging is disabled = touch, pen, and left-mouse button

Currently I'm detecting the input type and disabling the whole drag plugin if I see a pen or touch input. This doesn't work so well when somebody uses multiple pointer types. Is there anything I can do here?