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stiffscroll
A ScrollEffect for use with a Kivy ScrollView. It makes scrolling more laborious as you reach the edge of the scrollable area.
A ScrollView constructed with StiffScrollEffect, eg. ScrollView(effect_cls=StiffScrollEffect), will get harder to scroll as you get nearer to its edges. You can scroll all the way to the edge if you want to, but it will take more finger-movement than usual.
Unlike DampedScrollEffect, it is impossible to overscroll with StiffScrollEffect. That means you cannot push the contents of the ScrollView far enough to see what's beneath them. This is appropriate if the ScrollView contains, eg., a background image, like a desktop wallpaper. Overscrolling may give the impression that there is some reason to overscroll, even if just to take a peek beneath, and that impression may be misleading.
StiffScrollEffect was written by Zachary Spector. His other stuff is at: https://github.com/LogicalDash/ He can be reached, and possibly hired, at: zacharyspector@gmail.com