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  1. Qt
  2. QTBUG-68970

Bad mouse move event

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    Description

      When hovering is enabled QQuickWindowPrivate::deliverTouchAsMouse sends a QEvent::MouseMove after a Qt::TouchPointReleased. But when no mouse has been used before ( f.e. when no mouse is connected ) QGuiApplicationPrivate::lastCursorPosition is undefined ( inf, inf ) and the event contains totally useless data (  localPos=2.14748e+09,2.14748e+09, screenPos=inf,inf )

      Having hovering enabled, when using touch inputs sounds like not making a lot of sense, but applications that are written to run in all kind of environments will have this combination.

      A potential fix should be easy: only sending a MouseMove, when QGuiApplicationPrivate::lastCursorPosition is valid.

      Guess the issue can be found in many versions not only Qt 5.11

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          relates to

          Task - A task that needs to be done. QTBUG-56479 Remove spontaneous move event from QGuiApplicationPrivate::processMouseEvent

          • Not Evaluated - Not yet evaluated/prioritized
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-61938 [regression] Mouse Move Event Generated on Touch Release

          • P2: Important - Urgent, should be fixed, but will not stop the release.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-40856 MouseArea containsMouse flag is not reset on Touch Screen

          • P2: Important - Urgent, should be fixed, but will not stop the release.
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              srutledg Shawn Rutledge
              uwe Uwe Rathmann
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                Created:
                Updated: