Creating a Mobile Application | Qt Creator Manual

- Qt Creator Manual
- Creating a Mobile Application
- Qt Creator Manual 4.12.4

Creating a Qt Widget Based Application ◦ Managing Projects

# Creating a Mobile Application

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     import QtQuick 2.9
     import QtQuick.Controls 2.2
     import QtSensors 5.9

     ApplicationWindow {
         visible: true
         width: 640
         height: 480
         title: qsTr("Accelerate Bubble")

         SwipeView {
             id: swipeView
             anchors.fill: parent
             currentIndex: tabBar.currentIndex

             Page1Form {
                 bubble {
                     id: bubble
                     centerX: mainWindow.width / 2
                     centerY: mainWindow.height / 2
                     bubbleCenter: bubble.width / 2
                     x: bubble.centerX - bubble.bubbleCenter
                     y: bubble.centerY - bubble.bubbleCenter

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

             Page2Form {
             }
         }

         footer: TabBar {
             id: tabBar
             currentIndex: swipeView.currentIndex

             TabButton {
                 text: qsTr("Page 1")
             }
             TabButton {
                 text: qsTr("Page 2")
             }
         }

         Accelerometer {
            id: accel
            dataRate: 100
            active: true

            onReadingChanged: {
                var newX = (bubble.x + calcRoll(accel.reading.x, accel.reading.y, accel.reading.z) * 0.1)
                var newY = (bubble.y - calcPitch(accel.reading.x, accel.reading.y, accel.reading.z) * 0.1)

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

                if (newX < 0)
                    newX = 0

                if (newX > page1.mainWindow.width - bubble.width)
                    newX = page1.mainWindow.width - bubble.width

                if (newY < 18)
                    newY = 18

                if (newY > page1.mainWindow.height - bubble.height)
                    newY = page1.mainWindow.height - bubble.height

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

         function calcPitch(x, y, z) {
             return -(Math.atan(y / Math.sqrt(x * x + z * z)) * 57.2957795);
         }
         function calcRoll(x, y, z) {
             return -(Math.atan(x / Math.sqrt(y * y + z * z)) * 57.2957795);
         }
     }