Uploaded image for project: 'Qt'
  1. Qt
  2. QTBUG-60465

MouseArea stops working after OS steals release event

    XMLWordPrintable

Details

    • Bug
    • Resolution: Done
    • P1: Critical
    • 5.9.4
    • 5.8.0
    • Quick: Mouse Touch and Tablet input
    • None
    • iPad 2 (MC769BZ/A), running iOS 7.1 (11D167),
      iPad Air (A1474), running iOS 10.3
    • dd2657e30a42c269f47195d61a9fe8a5fff02912

    Description

      Using a QtQuick MouseArea on iOS, whenever the user presses the area (touch down) and the release (touch up) happens in a system context (if we press home on iOS or recent apps on Android, for instance) mouse area is stuck in pressed state forever, and stops responding to any touch events.

      I recorded this bug on a small 20s video, attached to this bug report.
      Also attached is the code I used for the test.

      What seems to happen is that, whenever MouseArea detects a pressed event (or touch down), it waits for the corresponding release event, but as we go out of the app context when doing a gesture on iOS, the release event is never received by mouseArea, and it remains forever waiting for the release event, in pressed state.

      Attachments

        1. MouseareaTest.mp4
          5.76 MB
        2. TestRect.qml
          2 kB

        Issue Links

          duplicates

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-53036 MouseArea bug in the latest Android

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-69233 When the screen is rotated while interacting with a MouseArea it will get stuck in the pressed state

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Closed

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-64130 MouseArea Freezes when device is rotated during mouse down/pressed

          • P1: Critical - Urgent and Important, will STOP the release if matched with set FixVersion field. This includes regressions from the last version that are not edge cases; Data loss; Build issues; All but the most unlikely crashes/lockups/hanging; Serious usability issues and embarrassing bugs & Bugs critical to a deliverable. This is the highest possible priority for requirements.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-54860 When moving the mouse quickly over items that have a Behavior set on font size changing when the mouse is over it then it can get stuck in the mouse over position

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Closed
          No reviews matched the request. Check your Options in the drop-down menu of this sections header.

          Activity

            People

              srutledg Shawn Rutledge
              lmreffatti Luiggi Reffatti
              Votes:
              3 Vote for this issue
              Watchers:
              6 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved:

                Gerrit Reviews

                  There are no open Gerrit changes