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  1. Qt
  2. QTBUG-96030

TapHandler PassiveGrab prohibits event propagation to MouseArea click

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      Observation
      TapHandler with Passive Grab does not trigger MouseArea Click. The TapHandler is wrapped in an item to ensure it's an Item sibling of the MouseArea and both are overlapping.

      Expectation
      Because the TapHandler creates only a passive grab, I've expected to get the CLICKED log entry.

      Code

      Item {
   anchors.fill: parent

   MouseArea {
      objectName: "mouseArea"
      anchors.fill: parent
      onClicked: () => console.log("CLICKED");
   }

   Item {
      objectName: "handlerContainer"
      anchors.fill: parent

      TapHandler {
         objectName: "tapHandler"
         gesturePolicy: TapHandler.DragThreshold
         onTapped: () => console.log("TAP");
      }
   }
}

      qt.quick.handler.dispatch: "tapHandler" checking device type QFlags<QInputDevice::DeviceType>(AllDevices) pointer type QFlags<QPointingDevice::PointerType>(AllPointerTypes) modifiers QFlags<Qt::KeyboardModifier>(KeyboardModifierMask)
qt.quick.handler.dispatch: QQuickTapHandler "tapHandler" on QQuickItem "handlerContainer" WANTS QMouseEvent(MouseButtonPress LeftButton pos=18,287 scn=18,287 gbl=-1141,394 dev=QPointingDevice("core pointer" Mouse id=1))
qt.quick.handler.tap: "tapHandler" pressed false -> true  QEventPoint(id=0 ts=5805 pos=18,287 scn=18,287 gbl=-1141,394 Pressed vel=24.0964,-7.98291 press=18,287 last=18,287 ? 0,0) gp QQuickTapHandler::DragThreshold
qt.quick.handler.grab: QQuickTapHandler(0x163dca07ea0, name = "tapHandler") QEventPoint(id=0 ts=5805 pos=18,287 scn=18,287 gbl=-1141,394 Pressed vel=24.0964,-7.98291 press=18,287 last=18,287 ? 0,0) true via QQuickDeliveryAgent(root=QQuickRootItem)
qt.quick.handler.grab: QEventPoint(id=0 ts=5805 pos=18,287 scn=18,287 gbl=-1141,394 Pressed vel=24.0964,-7.98291 press=18,287 last=18,287 ? 0,0) QPointingDevice::GrabPassive QQuickTapHandler(0x163dca07ea0, name = "tapHandler")
qt.quick.mouse: QQuickDeliveryAgent(root=QQuickRootItem) QMouseEvent(MouseButtonRelease LeftButton pos=18,287 scn=18,287 gbl=-1141,394 dev=QPointingDevice("core pointer" Mouse id=1))
qt.quick.handler.dispatch: "tapHandler" checking device type QFlags<QInputDevice::DeviceType>(AllDevices) pointer type QFlags<QPointingDevice::PointerType>(AllPointerTypes) modifiers QFlags<Qt::KeyboardModifier>(KeyboardModifierMask)
qt.quick.handler.dispatch: QQuickTapHandler "tapHandler" on QQuickItem "handlerContainer" WANTS QMouseEvent(MouseButtonRelease LeftButton pos=18,287 scn=18,287 gbl=-1141,394 dev=QPointingDevice("core pointer" Mouse id=1))
qt.quick.handler.tap: "tapHandler" pressed true -> false  QEventPoint(id=0 ts=5884 pos=18,287 scn=18,287 gbl=-1141,394 Released vel=7.22891,-2.39487 press=18,287 last=18,287 ? 0,0) gp QQuickTapHandler::DragThreshold
qt.quick.handler.tap: "tapHandler" tapped 1 times

qml: TAP

qt.quick.handler.grab: QEventPoint(id=0 ts=5884 pos=18,287 scn=18,287 gbl=-1141,394 Released vel=7.22891,-2.39487 press=18,287 last=18,287 ? 0,0) QPointingDevice::UngrabPassive QQuickTapHandler(0x163dca07ea0, name = "tapHandler")

      Notes

      • Enable "false" on the TapHandler makes the MouseArea react again
      • TapHandler without Item container does not work (only MouseArea active then) (qt.quick.handler.dispatch: QQuickTapHandler "tapHandler" on QQuickItem "" DECLINES QMouseEvent(...))
      • onPressed on MouseArea is not working as well

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            srutledg Shawn Rutledge
            michl86 Michael Piendl
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              Created:
              Updated:

                There is 1 open Gerrit change