Ability to lock drawing in the View window and use it purely for panning around the magnify view

It would be very useful to use it in this fashion and drag around it with a left mouse button (when drawing in the view window is blocked) as it would make panning easier in bigger artworks. I mean, you can use middle button or space, but it’s not always an option (hint: Laptop trackpads) or is too cumbersome to use.

Same as my feature request here: https://mantis.cosmigo.com/view.php?id=1252