On Mon, Oct 10, 2016 at 8:57 PM, Josh Andler wrote:
Hey Jabier,
I think that usability-wise it could be improved if 0 on the slider were in the middle so it could easily rotate both directions (so -180 to 180 would be how it would work visually).
I'm both excited and biased :)
In my never an humble :) opinion, once there is an easy shortcut, there is no reason whatsoever to have that slider.
If you want an arbitrary angle of view, use the shortcut and keep dragging mouse until you get there. Slider not required.
If you want to get from 0 degrees to 45 degrees easily, press an additional key for the 15 degrees constraint. Slider not required.
If you want to always see whether canvas was rotated (and how much), make Inkscape e.g. update its window's caption and mention the rotation angle (that's just one idea how to do it). Slider not required.
If you want to easily reset canvas rotation, add a menu item and make it shortcuttable :). In GIMP, we do just that: there's a menu item to reset both canvas rotation and canvas flipping. It also states the current rotation angle. Needless to say, slider not required.
Just my $0.02.
Alex