Go back in presentation mode on touch screens (tablets/phones)
With Purism5 around the corner, and with tablet devices like the Lenovo d330 (https://www.rojtberg.net/1652/ubuntu-on-the-lenovo-d330/) starting to be usable as tablets (I own one and try to replace my older ipad with it...), it would be nice to be able to go back in presentation mode on it.
Use case: I like to read a pdf magazine/newpaper/book in portrait mode in presentation mode. This works pretty well in Evince, except that without a mouse you cannot go back a page (at least I did not find a way) using ONLY touch (screen! not panel, to be clear). On tablets that is often the swipe gesture from right to left to go back, OR just click on the left part of your screen.
Wondering if this is possible? Or is there another reason to not have this. Maybe this is more a gnome usability thing, because off course exact the same behaviour is helpfull in a browser, text editor or every application working with 'paging'.