add "inertia" mode for mouse keys #18774
Conversation
- decelerates smoothly after key release instead of an instant stop - tracks X and Y velocity separately
- fixed occasional jerky movement while pressing multiple mousekeys quickly - made friction more accurate and user-configurable - converted floating-point math to integer - reduced compiled size by 100+ bytes
(further testing showed it's still needed)
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If it helps at all, I got a couple people to try this patch on their hardware, and they shared their thoughts afterward. The first report I got back was:
... and the second person to try it:
So I'm hoping it can land soon. |
Co-authored-by: Selene ToyKeeper <[email protected]>
Description
I added a new mousekey motion mode called "inertia". It accelerates along a quadratic curve while a key is pressed, then decelerates smoothly after the key is released. It also tracks velocity for X and Y axes separately. Together, this makes the cursor motion fluid, like moving on ice.
In this mode, the mouse cursor can be moved in many directions and even make curves, instead of just straight lines. For example, I painted a few brush strokes in Gimp, using only the up/down/left/right mouse keys:
Types of Changes
Checklist