Re: [Linuxwacom-discuss] Invert the scroll direction of a touch device?

[Peter H. <pet...@wh...>]

On Mon, Mar 11, 2013 at 09:32:27AM -0700, Jason Gerecke wrote:
> On Sat, Mar 9, 2013 at 6:31 AM, Alexander Maret-Huskinson <al...@ma...>wrote:
> 
> > Hi,
> >
> > I'm one of the developers of the KDE wacom KCM. We are currently in the
> > process of preparing a new release and are fixing/removing all features
> > which
> > do no longer work.
> >
> > With previous versions of xsetwacom it was possible to invert the scroll
> > direction of a touch device by swapping the button numbers, e.g.:
> >
> > xsetwacom --set $TOUCH_DEV button 4 5
> > xsetwacom --set $TOUCH_DEV button 5 4
> >
> > This however has not been working for quite some time now and I'm
> > wondering if
> > this is a feature or a bug? Is there currently any way to invert the scroll
> > direction of a touch device or has this feature been removed completely
> > from
> > xsetwacom?
> >
> > Greetings,
> > Alex
> >
> 
> Using the button assignment to change the scroll direction was never
> intended, but worked for a quite some time as a consequence of our
> implementation. At the moment I'm not aware of any way to swap the scroll
> direction, and I'm not sure if we want to add one in given that our
> eventual goal is to have gestures handled entirely out-of-driver (via e.g.
> apps like Touchegg or framework integration like GTK).

you could take a negative scroll distance as a signal to invert scrolling
(that's what we do in the synaptics driver).

having said that, the button 4/5 swap should still work since wacom doesn't
use smooth scrolling. what does xev say?

Cheers,
   Peter