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SubjectRe: [PATCH 8/8] Add BTN_TOUCH to Synaptics driver. Update mousedev.
On Sat, Sep 27, 2003 at 11:09:48PM +0200, Pavel Machek wrote:
> Hi!
>
> > > > One thing I tried to avoid is a 'device class' kind of field, that'd
> > > > tell if a device is a mouse a touchpad, touchscreen, tablet, whatever.
> > > > I tried to avoid it because there are devices that don't fall into any
> > > > predefined class and if we make enough classes, someone someday will
> > > > make a device that won't fit again.
> > >
> > > I believe having "is overlaid over screen" bit gets it right :-).
> >
> > Tablets aren't. And they're handled the same way as touchscreens.
>
> Ouch, so what's the difference between tablet and touchpad? Is it only
> in a way you are expected to use it? In such case "this is touchpad"
> bit is probably needed :-(.

For a tablet, the cursor follows the pen movement all the time. For a
touchpad, if you lift the finger and place it elsewhere, nothing
happens. This way you can move the cursor further by repeatedly stroking
the pad.

--
Vojtech Pavlik
SuSE Labs, SuSE CR
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