Qt 5.9 | Qt Sensors | Qt Sensors Examples | Qt Sensors - SensorGesture QML Type example

Qt 5.9.9 Reference Documentation

# Qt Sensors - SensorGesture QML Type example

## Overview

To write a QML application that will use the gesture plugin, following steps are needed:

Import the QtSensors 5.x module:

      import QtSensors 5.0

Add the SensorGesture QML type into your qml file.

          SensorGesture {
              id: sensorGesture
              enabled: false
              onDetected: {
                  if (gesture !== oldGesture)
                      count = 0;
                  valueText.text = gesture + " " + count;
                  oldGesture = gesture;
                  count++;
              }
              onEnabledChanged: {
                  valueText.text = ""
              }
          }

Each SensorGesture QML type contains a property called gestures. This example uses an alias `gestureId` for this property.

          property alias gestureId: sensorGesture.gestures

Then, the gesture or gestures to use can be specified using the alias:

              onSelectedGestureChanged: {
                  gesture.enabled = false;
                  gesture.gestureId = gestureList.selectedGesture;
                  ...
              }

A list of all available gestures is accessible through the `availableGestures` property:

              ListView {
                  id: gestureList

                  model: gesture.availableGestures
                  ...
              }

Files:

- qmlsensorgestures/Button.qml
- qmlsensorgestures/GestureList.qml
- qmlsensorgestures/GestureView.qml
- qmlsensorgestures/GesturesView.qml
- qmlsensorgestures/qmlsensorgestures.qml
- qmlsensorgestures/plugin/qcountergestureplugin.cpp
- qmlsensorgestures/plugin/qcountergestureplugin.h
- qmlsensorgestures/plugin/qcounterrecognizer.cpp
- qmlsensorgestures/plugin/qcounterrecognizer.h
- qmlsensorgestures/main.cpp
- qmlsensorgestures/qml.pro
- qmlsensorgestures/qml.qrc
- qmlsensorgestures/qmlsensorgestures.pro
- qmlsensorgestures/plugin/plugin.pro

See also Qt Sensors - ShakeIt QML Example and Qt Sensor Gestures.