[sane-devel] Xsane: 2 dimensional controls (mouse) for color adjustment -- howto?

[Oliver Rauch]

Hello Michal,

this function is not included in the gtk slider functions and there is no
quick solution for this.

I also do not see the need for this, can you explain the
situation where you/your co-workers need this.

Do you know the "auto enhance" button and the shadow/highlight sliders
of xsane?

If you scan negatives/slides you better should define medium types in which
contrast, brightness and gamma are stored for each color separately.
This also can be used for othe media like photos, but I do not know if
a common medium definition is applicably, but you should try.

Bye
Oliver

Michal Maru¹ka wrote:
> 
> 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)?
> 
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-- 
Homepage:	http://www.rauch-domain.de
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E-Mail:		mailto:Oliver.Rauch at rauch-domain.de