- Qt Creator Manual
- Creating a Mobile Application
- Qt Creator Manual 6.0.2

Creating a Qt Widget Based Application ◦ Managing Projects

# Creating a Mobile Application

     import QtQuick
     import QtSensors

     Window {
         id: mainWindow
         width: 320
         height: 480
         visible: true
         title: qsTr("Accelerate Bubble")
         readonly property double radians_to_degrees: 180 / Math.PI

         Accelerometer {
             id: accel
             dataRate: 100
             active:true

             onReadingChanged: {
                 var newX = (bubble.x + calcRoll(accel.reading.x, accel.reading.y, accel.reading.z) * .1)
                 var newY = (bubble.y - calcPitch(accel.reading.x, accel.reading.y, accel.reading.z) * .1)

                 if (isNaN(newX) || isNaN(newY))
                     return;

                 if (newX < 0)
                     newX = 0

                 if (newX > mainWindow.width - bubble.width)
                     newX = mainWindow.width - bubble.width

                 if (newY < 18)
                     newY = 18

                 if (newY > mainWindow.height - bubble.height)
                     newY = mainWindow.height - bubble.height

                     bubble.x = newX
                     bubble.y = newY
             }
         }

         function calcPitch(x,y,z) {
             return -Math.atan2(y, Math.hypot(x, z)) * mainWindow.radians_to_degrees;
         }
         function calcRoll(x,y,z) {
             return -Math.atan2(x, Math.hypot(y, z)) * mainWindow.radians_to_degrees;
         }

         Image {
             id: bubble
             source: "Bluebubble.svg"
             smooth: true
             property real centerX: mainWindow.width / 2
             property real centerY: mainWindow.height / 2
             property real bubbleCenter: bubble.width / 2
             x: centerX - bubbleCenter
             y: centerY - bubbleCenter

             Behavior on y {
                 SmoothedAnimation {
                     easing.type: Easing.Linear
                     duration: 100
                 }
             }
             Behavior on x {
                 SmoothedAnimation {
                     easing.type: Easing.Linear
                     duration: 100
                 }
             }
         }
     }