Can’t control mouse-wheel zooming with Apple Magic Mouse

[Michael Zajac]

Mouse-wheel zooming is far too sensitive and impossible to control with an Apple Magic Mouse (whose “wheel” is a touch panel). Using openstreetmap.org is very frustrating.

Specifically, while panning around with mouse click, every mouse-up risks zooming the map randomly in or out. Whether trying to zoom or not, even very small movements risk unintentionally zooming two or three levels at a time. Sometimes a zoom out is immediately followed by an unintentional zoom in, or vice versa. Sometimes I have to attempt a zoom several times in a row, and the repeated and jumpy visual zoom is on the verge of inducing motion sickness.

Is there a way to reduce the mouse-wheel sensitivity? Barring that, is there a way to disable it?

Background info:

• This is the mouse that comes with many Macs.
  
• There is no software sensitivity control for this mouse’s zoom.
  
• Scrolling and zooming work very well in most other apps and websites (for example, scroll-zooming in Google Maps is pretty good).
  

[Michael Zajac]

No response there, so I went to github, found these related bugs, and added a comment on the second one:

Zoom issues with Apple trackpad (Magic Mouse)

https://github.com/Leaflet/Leaflet/issues/2154

Mouse wheel zooms too fast in FF

https://github.com/Leaflet/Leaflet/issues/1794