On Tue, Feb 07, 2023 at 10:07:56PM +0100, Ulf Brosziewski wrote: > I wouldn't mind seeing such a feature in the driver, but I think there's more > to do than counting contacts. The start of a click-and-drag gesture may > involve > two contacts and a button-press event, or people who place a thumb in the > lower > clickpad area and use it for pressing the clickpad button might leave the > index > finger in the main area. In both cases you probably shouldn't generate a > middle- > button event, and I guess it doesn't happen on MacOS, or does it? > > There may be various means to distinguish the gestures. The driver might check > the positions and the distance of the contacts, or identify their duration, > their initial position or the current direction and speed of movement, etc. > > I don't know which strategies work well and can be implemented with reasonable > effort, it might not be easy to figure that out. It seems that libinput uses > distances (see > > https://wayland.freedesktop.org/libinput/doc/1.22.0/clickpad-softbuttons.html > ) as well as additional means for identifying "thumbs", but I'm not familiar > with the details.
Sounds like this good be something one could improve upon in-tree? The diff already feels much better than the current default. Cheers, Patrick
