Pan zoomed document with touchpad
Zoomed documents currently can be panned after pressing the middle mouse button. With a touchpad, it seems impossible to pan a document, making for an extremely awkward experience when one needs to look at for example a zoomed in plan while on the road with a laptop.
The issue is more general than not being able to pan without having a mouse with a scroll wheel or a middle button. Panning is in some scenario's (plans, drawings, etc) equally essential as scrolling is to text documents. Panning in evince should therefore be equally natural, obvious and discoverable as scrolling through pages, and should not be dependent on having specific hardware.