QtSensors Qt Sensors - SensorGesture QML Type example

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/Makefile.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.