add edge_resistance seat option for sticky monitor borders - #9201
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Add a `seat <name> edge_resistance <px>` option that holds the cursor at a shared output boundary until it has been pushed a configurable distance into the next output, making small targets along monitor edges easier to hit. The threshold is measured in layout coordinates so it is scale-independent, is bypassed while a button is held so drags cross freely, and is disabled by default. Documented in sway-input(5).
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Hi,
I had this idea for a long time and only recently started implementing it.
My issue was that it is easy to select a window title (top) or click a waybar widget (bottom) on a single screen. But when you have multiple monitors, I always overshoot, used to have the border preventing me from overflowing.
With this resistance option, it takes a configurable amount of extra pixels to switch from one monitor to the next, as if there was a blank space of that amount of pixels between the monitors. The switch only happens when enough virtual pixels have been crossed. And starts at the edge of the next screen, not at the amount of pixels limit.
The patch is pretty small, but lacks tests because I have no idea how to test that. Happy to fix with a hint on where to look.
Happy coding!