Autofocus mouse control

[amchagas]

Tom's request while using the flypi in Tanzania:
Request about the autofocus control. Can u change this so that it is just a "field". Then if you hover the mouse in the field and press mouse left it goes one direction and mouse right the other direction. so move while hold the click and stop move when release. Right now its very hard to focus on something as u need to accurately reposition and click the mouse to stop the focusing. Could even leave the slider with an auto home function (ie. that it just jumps to zero if u dont press a button)