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  1. Qt
  2. QTBUG-91096

>1 Programs on QtWayland causes QtVirtualKeyboard to not work

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    Details

    • Platform/s:
      Linux/Wayland
    • Commits:
      e08b25efe4a7bec1004696bd23d9f8959158bd60 (qt/qtwayland/dev) 268e66f0b2561e6d2d65bb15067af6d959e30cce (qt/qtwayland/6.0) 560d8a3bb8853c3d5a20d23aec77ee00ba71b718 (qt/tqtc-qtwayland/tqtc/lts-5.15) 3aa1b351d0487346c8d8514239f161360cade686 (qt/qtwayland/6.1)

      Description

      Cannot upload a tarball due to some kind of token problem, so created a git repo. Links to the git repo is in the text below.

       

      Setup Description:

      QtWayland Compositor running the ivi-compositor example.

      Patch applied to get Virtualkeyboard support. Patch is here: https://github.com/cbs101/qtvirtualkeyboard_problem/blob/master/qtwayland_ivi_compositor_example.patch

      Virtualkeyboard is used in application mode in the QtWayland Compositor, i.e. when starting the compositor: export QT_IM_MODULE=qtvirtualkeyboard.

       

      2 small demo applications are created. 

      app_digits:

      https://github.com/cbs101/qtvirtualkeyboard_problem/tree/master/app_digits

      app_upper:

      https://github.com/cbs101/qtvirtualkeyboard_problem/tree/master/app_upper

      Both demo application are really just a single textfield in a QML file.

      app_digits and app_upper does NOT have any ties to virtualkeyboard in their source code. The is displayed using Wayland, and then the virtualkeyboard in wayland is given to these applications.

      In app_digits, the textfield is limited by:

      inputMethodHints: Qt.ImhSensitiveData | Qt.ImhDigitsOnly

      In app_upper, the textfield is limited by:

      inputMethodHints: Qt.ImhUppercaseOnly

       

      Problem is seen on a iMX6 board where the QtWayland is running ontop of EGLFS, and i'm using the vivante drivers.

       

      Expected Result:

      The QtWayland ivi compositor is (vertical) split screen with 2 applications.

      The compositor is started. Just after the compositor is running app_digits and app_upper is started shortly after each other. One of them with "export QT_IVI_SURFACE_ID=1337" to ensure one of them gets the leftArea in the ivi-compositor.

      I expect when pressing the textfield in app_digits that a virtual keyboard pops up and shows only numeric digits.

      I expect when pressing the textfield in app_upper that a virtual keyboard pops up and shows only upper case letters.

      Seen Result:

      Multiple cases happen. It seems fairly random what happens. But always one of the 5 cases below. Good case happen in ~10 % of attemps. Hence it becomes wrong almost every time.

      Case 1 (the good case):

      It does happen as expected.

      Case 2 (bad):

      When pressing the textfield app_digits, the virtual keyboard is shown with digits (expected). Then when pressing the textfield in app_upper, the virtual keyboard is shown with digits (NOT expected).

      Case 3 (bad):

      When pressing the textfield in app_upper, the virtual keyboard is shown with upper case letters (expected).

      Then when pressing the textfield app_digits, the virtual keyboard is shown with upper case letters (NOT expected).

      Case 4 (bad):

      When pressing the textfield in app_upper, the virtual keyboard is shown with upper case letters (expected).

      Then when pressing the textfield app_digits, the virtual keyboard is not shown (NOT expected)

      Case 5 (bad):

      When pressing the textfield app_digits, the virtual keyboard is shown with digits (expected).

      Then when pressing the textfield app_upper, the virtual keyboard is not shown (NOT expected)

       

      Note: If I insert a delay in between starting the 2 applications, the case case seem to go upwards of 95 %. Parallelism ? Are there limitations to starting more than 1 application at the same time when the applications themselves do not got the virtualkeyboard but they instead get it from QtWayland which has virtualkeyboard in application mode ?

       

      Steps needed to Replicate the Problem:

      Start the patched ivi compositor

      Wait untill the Wayland compositor is running

      Start the 2 applications: app_digits and app_upper.

       

       

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            Assignee:
            esabraha Eskil Abrahamsen Blomfeldt
            Reporter:
            cbs chbs@prevas.dk
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              Updated:
              Resolved:

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