i don't personally use Xsane very often, but my co-workers do. I've seen them adjust manually the gamma/brigh/contrast (for each color) and thought:
it would be nice to switch with the 3 mouse/trackball buttons the color, and with the ball (of the trackball) change horizontally brightness & vertically contrast (and wheel the gamma), and maybe other variations w/ shift/meta/control pressed. My questions are: * is there some code which implements it (i don't like programming in C)? * is there better way to change colors (even w/ special hardware)?
