Add first time wizard so user can change/confirm the default locales

qgroundcontrol.pro

@@ -1382,3 +1382,6 @@ contains (CONFIG, QGC_DISABLE_INSTALLER_SETUP) {
 } else {
     include(QGCInstaller.pri)
 }
+
+DISTFILES += \
+    src/QmlControls/QGroundControl/Specific/qmldir

qgroundcontrol.qrc

@@ -242,6 +242,10 @@
         <file alias="VibrationPageWidget.qml">src/FlightMap/Widgets/VibrationPageWidget.qml</file>
         <file alias="VideoPageWidget.qml">src/FlightMap/Widgets/VideoPageWidget.qml</file>
         <file alias="VirtualJoystick.qml">src/FlightDisplay/VirtualJoystick.qml</file>
+        <file alias="QGroundControl/Specific/qmldir">src/QmlControls/QGroundControl/Specific/qmldir</file>
+        <file alias="QGroundControl/Specific/StartupWizard.qml">src/QmlControls/QGroundControl/Specific/StartupWizard.qml</file>
+        <file alias="QGroundControl/Specific/BaseStartupWizardPage.qml">src/QmlControls/QGroundControl/Specific/BaseStartupWizardPage.qml</file>
+        <file alias="QGroundControl/Specific/UnitsWizardPage.qml">src/QmlControls/QGroundControl/Specific/UnitsWizardPage.qml</file>
     </qresource>
     <qresource prefix="/json">
         <file alias="ADSBVehicleManager.SettingsGroup.json">src/Settings/ADSBVehicleManager.SettingsGroup.json</file>

src/QmlControls/QGroundControl/Specific/BaseStartupWizardPage.qml

@@ -0,0 +1,10 @@
+import QtQuick 2.12
+
+Item {
+    // `null` for default which makes the wizzard display one of the buttons: "Next" if more pages or "Done" if the last
+    property string doneText: null
+    // Blocks user from closing the wizard or going to the next page until this becomes true
+    property bool forceConfirmation: false
+
+    signal closeView()
+}

src/QmlControls/QGroundControl/Specific/StartupWizard.qml

@@ -0,0 +1,71 @@
+import QtQuick 2.11
+import QtQuick.Layouts 1.11
+
+import QGroundControl.ScreenTools 1.0
+import QGroundControl.Controls 1.0
+import QGroundControl.Palette 1.0
+import QGroundControl 1.0
+import QGroundControl.Specific 1.0
+
+
+Item {
+    id: _root
+    width: contentColumn.width
+    height: contentColumn.height
+
+    property bool forceKeepingOpen: _pageReady && pageLoader.item.forceConfirmation && !_armed
+
+    signal closeView()
+
+    property bool _pageReady: pageLoader.status === Loader.Ready
+    property int _currentIndex: 0
+    property int _pagesCount: QGroundControl.corePlugin.startupPages.length
+    property var _activeVehicle: QGroundControl.multiVehicleManager.activeVehicle
+    property bool _armed: _activeVehicle && _activeVehicle.armed
+
+    function doneOrJumpToNext() {
+        if(_currentIndex < _pagesCount - 1)
+            _currentIndex += 1
+        else {
+            _root.closeView()
+            QGroundControl.firstTimeStart = false
+        }
+    }
+
+    Column {
+        id: contentColumn
+        anchors.centerIn: parent
+        spacing: ScreenTools.defaultFontPixelHeight * 1
+        padding: spacing
+
+        QGCLabel {
+            text: qsTr("Welcome to " + QGroundControl.appName)
+            color: qgcPal.text
+            font.family: ScreenTools.demiboldFontFamily
+            font.pointSize: ScreenTools.mediumFontPointSize
+        }
+        Rectangle {
+            height: 1
+            color: qgcPal.windowShade
+            width: _pageReady ? pageLoader.item.width : 0
+        }
+
+        // Page content loader
+        Loader {
+            id: pageLoader
+            source: QGroundControl.corePlugin.startupPages[_currentIndex]
+        }
+
+        Connections {
+            target: _pageReady ? pageLoader.item : null
+            onCloseView: doneOrJumpToNext()
+        }
+
+        QGCButton {
+            property string _acknowledgeText: _pagesCount <= 1 ? qsTr("Next") : qsTr("Done")
+
+            text: (_pageReady && pageLoader.item && pageLoader.item.doneText) ? pageLoader.item.doneText : _acknowledgeText
+            onClicked: doneOrJumpToNext()
+        }
+    }
+}

src/QmlControls/QGroundControl/Specific/UnitsWizardPage.qml

@@ -0,0 +1,80 @@
+import QtQuick 2.12
+import QtQuick.Layouts 1.12
+
+import QGroundControl 1.0
+import QGroundControl.FactSystem 1.0
+import QGroundControl.FactControls 1.0
+import QGroundControl.ScreenTools 1.0
+import QGroundControl.SettingsManager 1.0
+import QGroundControl.Controls 1.0
+import QGroundControl.Specific 1.0
+
+BaseStartupWizardPage {
+    width: settingsColumn.width
+    height: settingsColumn.height
+
+    property real _margins: ScreenTools.defaultFontPixelWidth
+    property real _comboFieldWidth: ScreenTools.defaultFontPixelWidth * 20
+
+    doneText: qsTr("Confirm")
+
+    ColumnLayout {
+        id:                         settingsColumn
+        anchors.horizontalCenter:   parent.horizontalCenter
+
+        QGCLabel {
+            id:         unitsSectionLabel
+            text:       qsTr("Choose the measurement units you want to use in the application. You can change it later on in the Application Settings.")
+
+            Layout.preferredWidth: unitsGrid.width
+            wrapMode: Label.WordWrap
+        }
+
+        Rectangle {
+            Layout.preferredHeight: unitsGrid.height + (_margins * 2)
+            Layout.preferredWidth:  unitsGrid.width + (_margins * 2)
+            color:                  qgcPal.windowShade
+            Layout.fillWidth:       true
+
+            GridLayout {
+                id:                         unitsGrid
+                anchors.topMargin:          _margins
+                anchors.top:                parent.top
+                Layout.fillWidth:           false
+                anchors.horizontalCenter:   parent.horizontalCenter
+                flow:                       GridLayout.TopToBottom
+                rows:                       5
+
+                QGCLabel { text: qsTr("System of units") }
+
+                Repeater {
+                    model: [ qsTr("Distance"), qsTr("Area"), qsTr("Speed"), qsTr("Temperature") ]
+                    QGCLabel { text: modelData }
+                }
+
+                QGCComboBox {
+                    model: [qsTr("Metric System"), qsTr("Imperial System")]
+                    Layout.preferredWidth:  _comboFieldWidth
+
+                    currentIndex: QGroundControl.settingsManager.unitsSettings.distanceUnits.value === UnitsSettings.DistanceUnitsMeters ? 0 : 1
+
+                    onActivated: {
+                        var metric = (currentIndex === 0);
+                        QGroundControl.settingsManager.unitsSettings.distanceUnits.value = metric ? UnitsSettings.DistanceUnitsMeters : UnitsSettings.DistanceUnitsFeet
+                        QGroundControl.settingsManager.unitsSettings.areaUnits.value = metric ? UnitsSettings.AreaUnitsSquareMeters : UnitsSettings.AreaUnitsSquareFeet
+                        QGroundControl.settingsManager.unitsSettings.speedUnits.value = metric ? UnitsSettings.SpeedUnitsMetersPerSecond : UnitsSettings.SpeedUnitsFeetPerSecond
+                        QGroundControl.settingsManager.unitsSettings.temperatureUnits.value = metric ? UnitsSettings.TemperatureUnitsCelsius : UnitsSettings.TemperatureUnitsFarenheit
+                    }
+                }
+                Repeater {
+                    model:  [ QGroundControl.settingsManager.unitsSettings.distanceUnits, QGroundControl.settingsManager.unitsSettings.areaUnits, QGroundControl.settingsManager.unitsSettings.speedUnits, QGroundControl.settingsManager.unitsSettings.temperatureUnits ]
+                    FactComboBox {
+                        Layout.preferredWidth:  _comboFieldWidth
+                        fact:                   modelData
+                        indexModel:             false
+                    }
+                }
+            }
+        }
+    }
+}

src/QmlControls/QGroundControl/Specific/qmldir

@@ -0,0 +1,5 @@
+module QGroundControl.Specific
+
+BaseStartupWizardPage       1.0     BaseStartupWizardPage.qml
+StartupWizard               1.0     StartupWizard.qml
+UnitsWizardPage             1.0     UnitsWizardPage.qml

src/QmlControls/QGroundControlQmlGlobal.cc

@@ -24,6 +24,9 @@ const char* QGroundControlQmlGlobal::_flightMapPositionLatitudeSettingsKey =
 const char* QGroundControlQmlGlobal::_flightMapPositionLongitudeSettingsKey =   "Longitude";
 const char* QGroundControlQmlGlobal::_flightMapZoomSettingsKey =                "FlightMapZoom";
 
+static const QString _genericSettingsGroup("Generic");
+static const QString _firstTimeStartupSettingsKey("FirstTimeStartup");
+
 QGeoCoordinate   QGroundControlQmlGlobal::_coord = QGeoCoordinate(0.0,0.0);
 double           QGroundControlQmlGlobal::_zoom = 2;
 
@@ -217,6 +220,23 @@ bool QGroundControlQmlGlobal::apmFirmwareSupported()
     return _firmwarePluginManager->supportedFirmwareTypes().contains(MAV_AUTOPILOT_ARDUPILOTMEGA);
 }
 
+bool
+QGroundControlQmlGlobal::firstTimeStart()
+{
+    QSettings settings;
+    settings.beginGroup(_genericSettingsGroup);
+    return settings.value(_firstTimeStartupSettingsKey, true).toBool();
+}
+
+void
+QGroundControlQmlGlobal::setFirstTimeStart(bool firstTime)
+{
+    QSettings settings;
+    settings.beginGroup(_genericSettingsGroup);
+    settings.setValue(_firstTimeStartupSettingsKey, QVariant(firstTime));
+    emit firstTimeStartChanged();
+}
+
 bool QGroundControlQmlGlobal::linesIntersect(QPointF line1A, QPointF line1B, QPointF line2A, QPointF line2B)
 {
     QPointF intersectPoint;

src/QmlControls/QGroundControlQmlGlobal.h

@@ -121,6 +121,8 @@ class QGroundControlQmlGlobal : public QGCTool
     Q_PROPERTY(QString qgcVersion       READ qgcVersion         CONSTANT)
     Q_PROPERTY(bool    skipSetupPage    READ skipSetupPage      WRITE setSkipSetupPage NOTIFY skipSetupPageChanged)
 
+    Q_PROPERTY(bool    firstTimeStart   READ firstTimeStart     WRITE setFirstTimeStart NOTIFY firstTimeStartChanged)
+
     Q_INVOKABLE void    saveGlobalSetting       (const QString& key, const QString& value);
     Q_INVOKABLE QString loadGlobalSetting       (const QString& key, const QString& defaultValue);
     Q_INVOKABLE void    saveBoolGlobalSetting   (const QString& key, bool value);
@@ -236,6 +238,8 @@ class QGroundControlQmlGlobal : public QGCTool
     bool    apmFirmwareSupported    ();
     bool    skipSetupPage           () { return _skipSetupPage; }
     void    setSkipSetupPage        (bool skip);
+    bool    firstTimeStart();
+    void    setFirstTimeStart(bool firstTime);
 
     void    setIsVersionCheckEnabled    (bool enable);
     void    setMavlinkSystemID          (int  id);
@@ -264,6 +268,7 @@ class QGroundControlQmlGlobal : public QGCTool
     void flightMapPositionChanged       (QGeoCoordinate flightMapPosition);
     void flightMapZoomChanged           (double flightMapZoom);
     void skipSetupPageChanged           ();
+    void firstTimeStartChanged          ();
 
 private:
     double                  _flightMapInitialZoom   = 17.0;

src/api/QGCCorePlugin.cc

@@ -476,3 +476,9 @@ QString QGCCorePlugin::stableVersionCheckFileUrl() const
     return QString("https://s3-us-west-2.amazonaws.com/qgroundcontrol/latest/QGC.version.txt");
 #endif
 }
+
+QStringList
+QGCCorePlugin::startupPages()
+{
+    return { "/qml/QGroundControl/Specific/UnitsWizardPage.qml" };
+}

src/api/QGCCorePlugin.h

@@ -56,6 +56,8 @@ class QGCCorePlugin : public QGCTool
     Q_PROPERTY(QString              brandImageIndoor        READ brandImageIndoor                               CONSTANT)
     Q_PROPERTY(QString              brandImageOutdoor       READ brandImageOutdoor                              CONSTANT)
     Q_PROPERTY(QmlObjectListModel*  customMapItems          READ customMapItems                                 CONSTANT)
+    Q_PROPERTY(QStringList          startupPages            READ startupPages                                   NOTIFY startupPagesChanged)
+
 
     Q_INVOKABLE bool guidedActionsControllerLogging() const;
 
@@ -157,6 +159,8 @@ class QGCCorePlugin : public QGCTool
     /// @return Complex items to be made available to user
     virtual QStringList complexMissionItemNames(Vehicle* /*vehicle*/, const QStringList& complexMissionItemNames) { return complexMissionItemNames; }
 
+    virtual QStringList startupPages();
+
     bool showTouchAreas() const { return _showTouchAreas; }
     bool showAdvancedUI() const { return _showAdvancedUI; }
     void setShowTouchAreas(bool show);
@@ -171,6 +175,7 @@ class QGCCorePlugin : public QGCTool
     void instrumentPagesChanged ();
     void showTouchAreasChanged  (bool showTouchAreas);
     void showAdvancedUIChanged  (bool showAdvancedUI);
+    void startupPagesChanged    ();
 
 protected slots:
     void _activeVehicleChanged  (Vehicle* activeVehicle);

src/ui/MainRootWindow.qml

@@ -37,6 +37,20 @@ ApplicationWindow {
             width   = ScreenTools.isMobile ? Screen.width  : Math.min(250 * Screen.pixelDensity, Screen.width)
             height  = ScreenTools.isMobile ? Screen.height : Math.min(150 * Screen.pixelDensity, Screen.height)
         }
+
+        // Startup experience wizard and provide the source using QGCCorePlugin
+        if(QGroundControl.firstTimeStart) {
+            startupPopup.open()
+        }
+    }
+
+    // TODO: dev remove it
+    Shortcut {
+        sequence: "Ctrl+s"
+        onActivated: {
+            QGroundControl.firstTimeStart = true
+            startupPopup.open()
+        }
     }
 
     property var                _rgPreventViewSwitch:       [ false ]
@@ -677,4 +691,28 @@ ApplicationWindow {
         }
     }
 
+    //-- Startup PopUp wizard
+    Popup {
+        id:             startupPopup
+        x:              Math.max(Math.round((mainWindow.width  - width)  * 0.5), ScreenTools.defaultFontPixelWidth * 5)
+        y:              Math.max(Math.round((mainWindow.height - height) * 0.5), ScreenTools.defaultFontPixelHeight * 2)
+
+        modal:          true
+        focus:          true
+        closePolicy:    (startupLoader.item && startupLoader.item.forceKeepingOpen !== undefined && startupLoader.item.forceKeepingOpen) ? Popup.NoAutoClose : Popup.CloseOnEscape | Popup.CloseOnPressOutside
+
+        Connections {
+            target: startupLoader.item
+            onCloseView: startupPopup.close()
+        }
+
+        background: Rectangle {
+            radius: ScreenTools.defaultFontPixelHeight * 0.5
+            color: qgcPal.window
+        }
+        Loader {
+            id: startupLoader
+            source: "/qml/QGroundControl/Specific/StartupWizard.qml"
+        }
+    }
 }