Autoscrolling Sensitivity Configuration Options

[ChrisMarmot]

Autoscrolling is where you click or hold the middle button then move the mouse up or down to start the page scrolling.  The farther up or down you move your mouse from the initial point the faster the page autoscrolls. 

Unfortunately, Firefox autoscrolling is incredibly sensitive.  Even when you move the mouse up or down a moderate distance the autoscrolling quickly accelerates to very high speeds.  You have be incredibly precise in small mouse movements to keep it under control--something that most users can't easily do.

Having a configuration option that allows the user to decrease this sensitivity/acceleration would make autoscrolling a much more useful feature.

(Note: "Autoscrolling" and "smooth scrolling" are different things.  None of the config options related to smooth scrolling affect autoscrolling sensitivity.)

Apparently the issue is the autoscrolling values are currently coded in a way that causes super-quick acceleration.  For details see: https://www.reddit.com/r/firefox/comments/17binx4/any_way_to_change_middle_mouse_auto_scroll/

"According to this code, to activate autoscroll animation you need to move the mouse pointer at least 13 pixels up or down. After that, each pixel move gives you a specific acceleration. It starts at 0.06, then goes to 0.12, then 0.18, and so on...  The problem is that this formula is too sensitive to mouse movements in the first few pixels. It almost doubles in the first step..."

[Jon]

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