[Wayland-bugs] [Bug 83383] New: fail to receive touch_frame after final touch_up (Qt)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83383

          Priority: medium
            Bug ID: 83383
          Assignee: wayland-bugs at lists.freedesktop.org
           Summary: fail to receive touch_frame after final touch_up (Qt)
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: shawn.t.rutledge at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: 1.5.0
         Component: wayland
           Product: Wayland

In Qt applications it was not possible to press any QPushButton or QtQuick
MouseArea on a touchscreen because of this: it waits for the release in order
to treat the press-release sequence as a "click".  So we added a workaround: if
all touch points have been released, send ourselves an artificial touch_frame. 
But it has been said that this might be a regression after the latest work with
wayland using libinput.

https://codereview.qt-project.org/#/c/93572/

Tested with the latest git versions of wayland, weston and libinput on Arch
Linux, on two different systems both with touchscreens.

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