libinput: Disable tap-and-drag

Cyril B. lagoon42 at
Fri Jan 8 09:14:12 PST 2016

Peter Hutterer wrote:
> thanks for doing this work. tbh, I'm not a big fan of having this as a
> configuration option. IMO if you are using tapping as an interaction method
> on the touchpad, having tap-and-drag available is the natural extension and
> I don't see why we should disable it.

I have the same issue as Caibin: I simply cannot use tap-to-click as it 
is, as it triggers unwanted drags all the time. I even wonder how other 
people do not have the same problem: do they systematically (consciously 
or not) wait before moving the cursor after tapping?

However, I'd like to point out that both Windows and OSX have 
tap-and-drag disabled by default. That means that many users are 
probably used to that behaviour, and may find it frustrating not being 
able to turn off tap-and-drag.

Regarding decreasing the timeout, in my case I doubt it would work as my 
tap + move combination is done very quickly, as fast as a double-tap 
actually. I'm willing to try it though, but I'm not sure what constant 
should be modified in the code.

Caibin: thanks for the work, I'll test your branch very soon.

Cyril B.

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