GeoTab.qml Example File | Qt Positioning 5.5

- Qt 5.5
- Qt Positioning
- GeoFlickr (QML)
- GeoTab.qml Example File
- Qt 5.5.1 Reference Documentation

# GeoTab.qml Example File

geoflickr/flickrmobile/GeoTab.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
    **     notice, this list of conditions and the following disclaimer.
    **   * Redistributions in binary form must reproduce the above copyright
    **     notice, this list of conditions and the following disclaimer in
    **     the documentation and/or other materials provided with the
    **     distribution.
    **   * Neither the name of The Qt Company Ltd nor the names of its
    **     contributors may be used to endorse or promote products derived
    **     from this software without specific prior written permission.
    **
    **
    ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
    ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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    import QtQuick 2.0
    import QtPositioning 5.2

    Rectangle {
        id: container
        property int maxX: parent.width; property int maxY: parent.height
        property variant coordinate

        Binding {
            target: container
            property: "coordinate"
            value: positionSource.position.coordinate
        }

        width: 300; height: 130
        color: "blue"
        opacity: 0.7
        border.color: "black"
        border.width: 1
        radius: 5
        gradient: Gradient {
            GradientStop {position: 0.0; color: "grey"}
            GradientStop {position: 1.0; color: "black"}
        }
        MouseArea {
            anchors.fill: parent
            drag.target: parent
            drag.axis: Drag.XandYAxis
            drag.minimumX: -(parent.width * (2/3)); drag.maximumX: parent.maxX - (parent.width/3)
            drag.minimumY: -(parent.height/2); drag.maximumY: parent.maxY - (parent.height/2)
        }
        Button {
            id: locateButton
            text: "Locate & update"
            anchors {left: parent.left; leftMargin: 5}
            y: 3; height: 32; width: parent.width - 10
            onClicked: {
                if (positionSource.supportedPositioningMethods ===
                        PositionSource.NoPositioningMethods) {
                    positionSource.nmeaSource = "nmealog.txt";
                    sourceText.text = "(filesource): " + printableMethod(positionSource.supportedPositioningMethods);
                }
                positionSource.update();
            }
        }
        PositionSource {
            id: positionSource
            onPositionChanged: { planet.source = "images/sun.png"; }

            onUpdateTimeout: {
                activityText.fadeOut = true
            }
        }
        function printableMethod(method) {
            if (method === PositionSource.SatellitePositioningMethods)
                return "Satellite";
            else if (method === PositionSource.NoPositioningMethods)
                return "Not available"
            else if (method === PositionSource.NonSatellitePositioningMethods)
                return "Non-satellite"
            else if (method === PositionSource.AllPositioningMethods)
                return "Multiple"
            return "source error";
        }

        Grid {
            id: locationGrid
            columns: 2
            anchors {left: parent.left; leftMargin: 5; top: locateButton.bottom; topMargin: 5}
            spacing: 5
            Text {color: "white"; font.bold: true
                text: "Lat:"; style: Text.Raised; styleColor: "black"
            }
            Text {id: latitudeValue; color: "white"; font.bold: true
                text: positionSource.position.coordinate.latitude; style: Text.Raised; styleColor: "black";
            }
            Text {color: "white"; font.bold: true
                text: "Lon:"; style: Text.Raised; styleColor: "black"
            }
            Text {id: longitudeValue; color: "white"; font.bold: true
                text: positionSource.position.coordinate.longitude; style: Text.Raised; styleColor: "black"
            }
        }
        Image {
            id: planet
            anchors {top: locationGrid.bottom; left: parent.left; leftMargin: locationGrid.anchors.leftMargin}
            source: "images/moon.png"
            width: 30; height: 30
        }
        Text {id: sourceText; color: "white"; font.bold: true;
            anchors {left: planet.right; leftMargin: 5; verticalCenter: planet.verticalCenter}
            text: "Source: " + printableMethod(positionSource.supportedPositioningMethods); style: Text.Raised; styleColor: "black";
        }

        Text {
            id: activityText; color: "white"; font.bold: true;
            anchors { top: planet.bottom; horizontalCenter: parent.horizontalCenter }
            property bool fadeOut: false

            text: {
                if (fadeOut)
                    return qsTr("Timeout occurred!");
                else if (positionSource.active)
                    return qsTr("Retrieving update...")
                else
                    return ""
            }

            Timer {
                id: fadeoutTimer; repeat: false; interval: 3000; running: activityText.fadeOut
                onTriggered: { activityText.fadeOut = false; }
            }
        }
    }