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  1. Qt
  2. QTBUG-68075

DragHandler: need the ability to start dragging after a long press

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    Description

      This is important to the KDE Plasma Desktop project.

      Ordinarily, TapHandler detects the long press. But in order for DragHandler to start dragging right away without waiting for the drag threshold to be exceeded, it would need an imperative (JS) API like startDragging() or some such; so it seems less ugly to add the long press detection to DragHandler, so that dragging can be initiated either way (by exceeding the drag threshold or by long press); and it should somehow be configurable, because in UIs which need to initiate drag via long press, sometimes it's not appropriate to allow initiating it by dragging past the threshold.

      Attachments

        1. longpress_and_drag.qml
          0.9 kB
          Jan Arve
        2. rubberbandLongPressAndDrag.qml
          2 kB
          Shawn Rutledge

        Issue Links

          depends on

          Task - A task that needs to be done. QTBUG-84179 Decide what to do about long-press events and maybe right-click emulation in Qt 6

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

          Task - A task that needs to be done. QTBUG-68082 make sure it's OK to use DragHandler in a ListView delegate

          • 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-77634 Problems with grabbing / logic control in overlapped Tap and Drag Handlers.

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Reported

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-84232 DragHandler and its HandlerPoint don't make it easy to detect whether the point is pressed on a touchscreen

          • P3: Somewhat important - Should be fixed, but doesn't affect the release in any way.
          • Reported
          For Gerrit Dashboard: QTBUG-68075
          # Subject Branch Project Status CR V
          227520,5 WIP: DragHandler: add longPressThreshold, start dragging if time exceeded dev qt/qtdeclarative Status: ABANDONED -2 0
          267206,13 Add dragThreshold property to Event Handlers 5.15 qt/qtdeclarative Status: MERGED +2 0
          273831,1 Add dragThreshold property to Event Handlers 5.14 qt/qtdeclarative Status: ABANDONED 0 0

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              srutledg Shawn Rutledge
              srutledg Shawn Rutledge
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              Dates

                Created:
                Updated:

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