- Qt 5.5
- Qt Location
- Plane Spotter (QML)
- planespotter.qml Example File
- Qt 5.5.1 Reference Documentation

# planespotter.qml Example File

planespotter/planespotter.qml

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the examples of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:BSD$
    ** You may use this file under the terms of the BSD license as follows:
    **
    ** "Redistribution and use in source and binary forms, with or without
    ** modification, are permitted provided that the following conditions are
    ** met:
    **   * Redistributions of source code must retain the above copyright
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    **     the documentation and/or other materials provided with the
    **     distribution.
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    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
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    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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    import QtQuick 2.4
    import QtQuick.Window 2.2
    import QtPositioning 5.5
    import QtLocation 5.5

    Window {
        width: 700
        height: 500
        visible: true

        property variant topLeftEurope: QtPositioning.coordinate(60.5, 0.0)
        property variant bottomRightEurope: QtPositioning.coordinate(51.0, 14.0)
        property variant viewOfEurope:
                QtPositioning.rectangle(topLeftEurope, bottomRightEurope)

        property variant berlin: QtPositioning.coordinate(52.5175, 13.384)
        property variant oslo: QtPositioning.coordinate(59.9154, 10.7425)
        property variant london: QtPositioning.coordinate(51.5, 0.1275)

        Map {
            id: mapOfEurope
            anchors.centerIn: parent;
            anchors.fill: parent
            plugin: Plugin {
                name: "osm"
            }

            Plane {
                id: qmlPlane
                pilotName: "QML"
                coordinate: oslo2Berlin.position

                SequentialAnimation {
                    id: qmlPlaneAnimation
                    property real rotationDirection : 0;
                    NumberAnimation {
                        target: qmlPlane; property: "bearing"; duration: 1000
                        easing.type: Easing.InOutQuad
                        to: qmlPlaneAnimation.rotationDirection
                    }
                    CoordinateAnimation {
                        id: coordinateAnimation; duration: 5000
                        target: oslo2Berlin; property: "position"
                        easing.type: Easing.InOutQuad
                    }

                    onStopped: {
                        if (coordinateAnimation.to === berlin)
                            qmlPlane.showMessage(qsTr("Hello Berlin!"))
                        else if (coordinateAnimation.to === oslo)
                            qmlPlane.showMessage(qsTr("Hello Oslo!"))
                    }
                    onStarted: {
                        if (coordinateAnimation.from === oslo)
                            qmlPlane.showMessage(qsTr("See you Oslo!"))
                        else if (coordinateAnimation.from === berlin)
                            qmlPlane.showMessage(qsTr("See you Berlin!"))
                    }
                }

                MouseArea {
                    anchors.fill: parent
                    onClicked: {
                        if (qmlPlaneAnimation.running) {
                            console.log("Plane still in the air.");
                            return;
                        }

                        if (oslo2Berlin.position === berlin) {
                            coordinateAnimation.from = berlin;
                            coordinateAnimation.to = oslo;
                        } else if (oslo2Berlin.position === oslo) {
                            coordinateAnimation.from = oslo;
                            coordinateAnimation.to = berlin;
                        }

                        qmlPlaneAnimation.rotationDirection = oslo2Berlin.position.azimuthTo(coordinateAnimation.to)
                        qmlPlaneAnimation.start()
                    }
                }
                Component.onCompleted: {
                    oslo2Berlin.position = oslo;
                }
            }

            Plane {
                id: cppPlane
                pilotName: "C++"
                coordinate: berlin2London.position

                MouseArea {
                    anchors.fill: parent
                    onClicked: {
                        if (cppPlaneAnimation.running || berlin2London.isFlying()) {
                            console.log("Plane still in the air.");
                            return;
                        }

                        berlin2London.swapDestinations();
                        cppPlaneAnimation.rotationDirection = berlin2London.position.azimuthTo(berlin2London.to)
                        cppPlaneAnimation.start();
                        cppPlane.departed();
                    }
                }
                SequentialAnimation {
                    id: cppPlaneAnimation
                    property real rotationDirection : 0;
                    NumberAnimation {
                        target: cppPlane; property: "bearing"; duration: 1000
                        easing.type: Easing.InOutQuad
                        to: cppPlaneAnimation.rotationDirection
                    }
                    ScriptAction { script: berlin2London.startFlight() }
                }

                Component.onCompleted: {
                    berlin2London.position = berlin;
                    berlin2London.to = london;
                    berlin2London.from = berlin;
                    berlin2London.arrived.connect(arrived)
                }

                function arrived(){
                    if (berlin2London.to === berlin)
                        cppPlane.showMessage(qsTr("Hello Berlin!"))
                    else if (berlin2London.to === london)
                        cppPlane.showMessage(qsTr("Hello London!"))
                }

                function departed(){
                    if (berlin2London.from === berlin)
                        cppPlane.showMessage(qsTr("See you Berlin!"))
                    else if (berlin2London.from === london)
                        cppPlane.showMessage(qsTr("See you London!"))
                }
            }

            visibleRegion: viewOfEurope
        }

        Rectangle {
            id: infoBox
            anchors.centerIn: parent
            color: "white"
            border.width: 1
            width: text.width * 1.3
            height: text.height * 1.3
            radius: 5
            Text {
                id: text
                anchors.centerIn: parent
                text: qsTr("Hit the plane to start the flight!")
            }

            Timer {
                interval: 5000; running: true; repeat: false;
                onTriggered: fadeOut.start()
            }

            NumberAnimation {
                id: fadeOut; target: infoBox;
                property: "opacity";
                to: 0.0;
                duration: 200
                easing.type: Easing.InOutQuad
            }
        }
    }