Pixel-based smooth scrolling for touchpads (and touchscreens)
Submitted by Jean-François Fortin Tam
One thing that GTK3 brings and that I'd love to see in gnumeric is smooth scrolling (even kinetic scrolling maybe). In applications such as Nautilus, Evince, or even Firefox, I get super smooth scrolling when using my touchpad and moving two fingers slowly or using the touchpad's edge scroll feature.
Gnumeric is hard to use on a laptop because it scrolls in a discrete way, bumping up/down a bunch of rows at once for each scroll unit... whereas touchpads are continous instead of discrete, and they don't have the tactile feedback (the clickiness) of a traditional mouse wheel so the gnumeric UI mismatches the physical device.
It would be awesome if it supported smooth scrolling for touchpads, touchscreens, and (some) mice that support it.