[PATCH libinput 2/5] Add configuration interface for tap drag-lock

[Peter Hutterer]

On Tue, Jun 23, 2015 at 05:59:54PM -0700, Bill Spitzak wrote:
> On Tue, Jun 23, 2015 at 4:17 PM, Peter Hutterer <peter.hutterer at who-t.net>
> wrote:
> 
> >
> > > Perhaps you are already doing this, but can't you require the mouse to be
> > > held down and/or moved more than some threshold on the first drag to turn
> > > on drag-lock mode?
> >
> > interesting idea, but I don't think it'll work. too much guesswork, too
> > easy
> > to get wrong. for example, when I know I need to cover a large distance
> > while dragging, a quick 3-4cm repeated drag is faster than a couple of
> > large
> > moves.
> >
> 
> I was thinking the threshold would be much smaller than 3-4 cm, more like 1
> cm. However I don't actually have a trackpad that works this way so I
> really am not one to guess what would work.
> 
> Have you seen similar behaviour on Windows or Mac and can you experiment to
> see what they did? I would not be suprised if they break Inkscape in the
> same way, however.

OS X has a toggle for this, hidden in the accessibility section (not the
normal touchpad settings panel). Windows calls it ClickLock apparently and
too has a setting (though it's a bit different, it also applies to physical
buttons)

Cheers,
   Peter