Qt Documentation

Contents

Qt Sensors - ShakeIt QML Example

The sensor gesture example demonstrates the steps for creating a QML application that uses sensor gestures and the included shake sensor.

ShakeIt in QML

Writing a QML application that uses the Shake QML sensorgestures type requires the following steps:

Import the Sensors Declarative module.



  import QtSensors 5.0

Add a SensorGesture QML type.



      SensorGesture {

In the SensorGesture type, specify which gesture to be used. Note that this can be a comma separated list. Here we are only interested in one gesture recognizer.



          gestures : ["QtSensors.shake", "QtSensors.whip", "QtSensors.twist", "QtSensors.cover",
              "QtSensors.hover", "QtSensors.turnover", "QtSensors.pickup", "QtSensors.slam" , "QtSensors.doubletap"]

Use the 'enabled' property to start the sensor gesture.



          enabled: true

Use the onDetected signal to do stuff.



          onDetected:{
              console.debug(gesture)
              label.text = gesture

              if (gesture == "shake") {
                  window.state == "rotated" ? window.state = "default" : window.state = "rotated"
                  timer.start()
              }
              if (gesture == "whip") {
                  window.state == "whipped" ? window.state = "default" : window.state = "whipped"
                  timer.start()
              }
              if (gesture == "twistRight") {
                  window.state == "twistedR" ? window.state = "default" : window.state = "twistedR"
                  timer.start()
              }
              if (gesture == "twistLeft") {
                  window.state == "twistedL" ? window.state = "default" : window.state = "twistedL"
                  timer.start()
              }
              if (gesture == "cover") {
                  window.state == "covered" ? window.state = "default" : window.state = "covered"
                  timer.start()
              }
              if (gesture == "hover") {
                  window.state == "hovered" ? window.state = "default" : window.state = "hovered"
                  timer.start()
              }
              if (gesture == "turnover") {
                  window.state = "default"
                  loopy2a_mono.play();
                  timer.start()
              }
              if (gesture == "pickup") {
                  window.state = "default"
                  phone.play()
                  timer.start()
              }
              if (gesture == "slam") {
                  window.state == "slammed" ? window.state = "default" : window.state = "slammed"
                  timer.start()
              }
              if (gesture == "doubletap") {
                  window.state == "doubletapped" ? window.state = "default" : window.state = "doubletapped"
                  timer.start()
              }
          }

There are additional gestures to shake which are supported: whip, twistRight, hover, cover, turnover and pickup.

Files:

Images:

© 2019 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.