On Wed, Jan 31, 2018 at 1:02 AM, Peter Hutterer <peter.hutte...@who-t.net> wrote: > On Tue, Jan 30, 2018 at 04:18:26PM +1000, Peter Hutterer wrote: >> On Wed, Jan 24, 2018 at 10:47:10AM +0100, Johannes Pointner wrote: >> > On Wed, Jan 24, 2018 at 10:18 AM, Peter Hutterer >> > <peter.hutte...@who-t.net> wrote: >> > > On Wed, Jan 24, 2018 at 10:04:52AM +0100, Johannes Pointner wrote: >> > >> Hello, >> > >> >> > >> I have noticed that since we are using xf86-input-libinput all our >> > >> touchscreens (resistive and pcap) reporting a value of 15 for >> > >> maxTouchPoints. >> > >> After further looking into this I saw that xf86-input-libinput sets >> > >> this value fix to 15. I also checked if it is possible to get this >> > >> info from libinput but I wasn't able to find a possibility. >> > >> >> > >> Is this intentionally? >> > > >> > > mostly, it's largely a matter of not exporting information that doesn't >> > > need >> > > to be exported. at least with touchpads libinput does a few tricks and >> > > changes the number of touches available (not yet at runtime, but who >> > > knows) >> > > - once we start exporting this we're a lot more limited in what we can do >> > > internally to work around broken devices. >> > > >> > > Main question is though: what do you need this value for? >> > We use this value which is available through the browser >> > (https://developer.mozilla.org/en-US/docs/Web/API/Navigator/maxTouchPoints) >> > to determine if it is a multitouch device or not. >> > The same goes for Qt >> > (http://doc.qt.io/qt-5/qtouchdevice.html#maximumTouchPoints) which has >> > a libinput backend. >> >> Actually, this is something we could fix in the driver by checking for >> ABS_MT_SLOT and forcing it to 1 when missing. that wouldn't fix Qt though, >> so it may be better to have this exported by libinput after all... >> Need to think of the various special cases here. > > for reference, I filed this bug: > https://bugs.freedesktop.org/show_bug.cgi?id=104867 > > Cheers, > Peter
Hello Peter, thx for your feedback and for creating this bug. Regards, Hannes _______________________________________________ wayland-devel mailing list wayland-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/wayland-devel
