* Carlos Garnacho: > Hi Florian, > >> I have a touch screen which generates a plethora of event types >> according to libinput-debug-events (including what seems to be >> multi-touch events). I can even see distinct events for the digitizer >> pen. >> >> However, further up the stack, all this is gone. I don't get any >> two-finger scrolling, for instance. There is no right-button >> emulation in Firefox, either. I can still generate primary button >> click events and (single-finger) drag events, but that's about it. > > Handling of touch events is up to the application. Besides the minimal > single-touch to pointer event emulation (which only applies to > X11/Xwayland) there are no emulation layers making this up for > applications that don't know about touch events themselves. Wow. Doesn't that make it rather unlikely that touch behavior across applications remains consistent? > Other apps/toolkits/etc have to actively take care of touch support > themselves. Firefox, despite "using" GTK+, implements itself large > parts of their UI, if they don't observe touch input, it's pretty much > for them to make use of it too. Firefox turns on touch support only when the per-tab subprocess mode is active (i.e., browser.tabs.remote.force-enable is set to true). This is not the default in Fedora. This Firefox mode provides drag-scrolling (before, dragging only selects text), and it is also possible to open links in a new tab because a long touch on a link triggers the context menu. However, this works only once. After creating a new tab in this manner, touch events only move the pointer as far as Firefox is concerned, but do not result in click events, so it is no longer possible to interact with the Firefox application. I'll file this as a bug (unless this is a known issue). >> With Wayland, the pen appears to be completely dead. With X, I get > > Can you interact with gnome-shell with it? or is it entirely dead? Not sure. There is some pointer activity in response to the pen: a second pointer appears, but not necessarily at the tip of the pen. So it's not completely dead. _______________________________________________ desktop mailing list -- desktop@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to desktop-leave@xxxxxxxxxxxxxxxxxxxxxxx
