[Gimp-developer] add mouse action for brush scaling

[Alexander Rabtchevich]

Currently scalable brush can be scaled with [ ] by default, what is very 
fine. Could a mouse scroll wheel + some key modifier be used to act the 
same as [ ] buttons?

I'm a right-handed person, so when I retouch a photo most of my actions 
are connected with mouse movements and some left hand actions: Ctr+H, 
Ctrl+C, Ctrl+wheel, Shift+wheel, Space. Rather often brush needs to be 
scaled, so I have to left mouse and press [ or ] several times. The left 
side of the keyboard is mostly taken with shotcuts.

I suggest adding Alt + wheel to act like [ ] for brush scaling. It could 
be very convenient to a user not to leave a mouse for keyboard and due 
the wheel is very well controllable and intuitive for scaling purposes.

-- 
With respect
Alexander Rabtchevich