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  1. Qt
  2. QTBUG-108635

enable PinchHandler to control ease of starting rotation

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    Description

      In Qt Location we need this feature: it should be easy to zoom the map, but a little harder to rotate it. I.e. the initial orientation needs to be "sticky", by having an extra threshold of some kind.

      When you are trying to rotate, the usual drag threshold is a bit odd to use as the rotation threshold. The gesture starts when either touchpoint (or both together) move past the drag threshold, but that's in pixels. Maybe the rotation threshold should be in degrees. That way it can be independent: you have to exceed both thresholds to start rotating, but if the rotation threshold is large enough, we'll get the desired sticky-rotation behavior; whereas if it's too low, it will turn out in practice that by the time you have exceeded the drag threshold, you have exceeded the rotation threshold too.

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          depends on

          Bug - A problem which impairs or prevents the functions of the product. QTBUG-109373 DragHandler and PinchHandler: meaning of axis persistentValue is wrong

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

          Task - A task that needs to be done. QTBUG-96795 QtLocation maps to Qt 6.2

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

          Suggestion - Public suggestions QTBUG-76380 PinchHandler needs a way to limit the actions it performs

          • Not Evaluated - Not yet evaluated/prioritized
          • Reported

          Suggestion - Public suggestions QTBUG-108542 enable use of ScriptAction with Behavior

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

          Suggestion - Public suggestions QTBUG-76379 PinchHandler should have a way to reset

          • Not Evaluated - Not yet evaluated/prioritized
          • Closed
          For Gerrit Dashboard: QTBUG-108635
          # Subject Branch Project Status CR V
          429865,6 PinchHandler: don't bypass property interceptors like BoundaryRule dev qt/qtdeclarative Status: NEW 0 0
          443788,19 Set arbitrary target props in QQuickDragAxis with arbitrary scaling dev qt/qtdeclarative Status: NEW 0 0
          444085,1 WIP add PinchHandler.rotationThreshold dev qt/qtdeclarative Status: NEW -2 0
          446005,1 WIP add knob example with detents dev qt/qtdeclarative Status: NEW -2 0

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              srutledg Shawn Rutledge
              srutledg Shawn Rutledge
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              Dates

                Created:
                Updated: