Fixed initial startup bugs, cleaned up the activation-deactivation of update timers. Added initial instructions for new users.

src/ui/HDDisplay.cc

@@ -220,16 +220,6 @@ void HDDisplay::renderOverlay()
     }
 }
 
-void HDDisplay::start()
-{
-    refreshTimer->start();
-}
-
-void HDDisplay::stop()
-{
-    refreshTimer->stop();
-}
-
 /**
  *
  * @param uas the UAS/MAV to monitor/display with the HUD
@@ -669,7 +659,22 @@ void HDDisplay::changeEvent(QEvent *e)
 }
 
 
-
+void HDDisplay::showEvent(QShowEvent* event)
+{
+    // React only to internal (pre-display)
+    // events
+    if (!event->spontaneous())
+    {
+        if (event->type() == QEvent::Hide)
+        {
+            refreshTimer->stop();
+        }
+        else if (event->type() == QEvent::Show)
+        {
+            refreshTimer->start(updateInterval);
+        }
+    }
+}
 
 
 ///**

src/ui/HDDisplay.h

@@ -64,8 +64,6 @@ public:
 public slots:
     /** @brief Update a HDD value */
     void updateValue(UASInterface* uas, QString name, double value, quint64 msec);
-    void start();
-    void stop();
     void setActiveUAS(UASInterface* uas);
 
 protected slots:
@@ -77,6 +75,7 @@ protected slots:
 protected:
     void changeEvent(QEvent *e);
     void paintEvent(QPaintEvent * event);
+    void showEvent(QShowEvent* event);
     float refLineWidthToPen(float line);
     float refToScreenX(float x);
     float refToScreenY(float y);
@@ -142,6 +141,7 @@ protected:
     int warningBlinkRate;      ///< Blink rate of warning messages, will be rounded to the refresh rate
 
     QTimer* refreshTimer;      ///< The main timer, controls the update rate
+    static const int updateInterval = 120; ///< Update interval in milliseconds
     QPainter* hudPainter;
     QFont font;                ///< The HUD font, per default the free Bitstream Vera SANS, which is very close to actual HUD fonts
     QFontDatabase fontDatabase;///< Font database, only used to load the TrueType font file (the HUD font is directly loaded from file rather than from the system)

src/ui/HSIDisplay.cc

@@ -100,7 +100,7 @@ HSIDisplay::HSIDisplay(QWidget *parent) :
         topMargin(3.0f)
 {
     connect(UASManager::instance(), SIGNAL(activeUASSet(UASInterface*)), this, SLOT(setActiveUAS(UASInterface*)));
-    refreshTimer->setInterval(120);
+    refreshTimer->setInterval(updateInterval);
 
 
 //    this->setScene(new QGraphicsScene(-metricWidth/2.0f, -metricWidth/2.0f, metricWidth, metricWidth, this));
@@ -925,6 +925,23 @@ void HSIDisplay::wheelEvent(QWheelEvent* event)
     emit metricWidthChanged(metricWidth);
 }
 
+void HSIDisplay::showEvent(QShowEvent* event)
+{
+    // React only to internal (pre-display)
+    // events
+    if (!event->spontaneous())
+    {
+        if (event->type() == QEvent::Hide)
+        {
+            refreshTimer->stop();
+        }
+        else if (event->type() == QEvent::Show)
+        {
+            refreshTimer->start(updateInterval);
+        }
+    }
+}
+
 void HSIDisplay::updateJoystick(double roll, double pitch, double yaw, double thrust, int xHat, int yHat)
 {
     Q_UNUSED(roll);

src/ui/HSIDisplay.h

@@ -111,6 +111,7 @@ protected slots:
 
 protected:
 
+    void showEvent(QShowEvent* event);
     /** @brief Get color from GPS signal-to-noise colormap */
     static QColor getColorForSNR(float snr);
     /** @brief Metric world coordinates to metric body coordinates */

src/ui/HUD.cc

@@ -29,6 +29,8 @@ This file is part of the QGROUNDCONTROL project
  *
  */
 
+#include <QShowEvent>
+
 #include <QDebug>
 #include <cmath>
 #ifndef M_PI
@@ -129,7 +131,7 @@ HUD::HUD(int width, int height, QWidget* parent)
     glImage = QGLWidget::convertToGLFormat(fill);
 
     // Refresh timer
-    refreshTimer->setInterval(50); // 20 Hz
+    refreshTimer->setInterval(updateInterval);
     //connect(refreshTimer, SIGNAL(timeout()), this, SLOT(update()));
     connect(refreshTimer, SIGNAL(timeout()), this, SLOT(paintHUD()));
 
@@ -175,25 +177,19 @@ HUD::~HUD()
 
 void HUD::showEvent(QShowEvent* event)
 {
-    Q_UNUSED(event);
-    if (isVisible())
+    // React only to internal (pre-display)
+    // events
+    if (!event->spontaneous())
     {
-        refreshTimer->start();
-    }
-    else
+        if (event->type() == QEvent::Hide)
         {
             refreshTimer->stop();
         }
-}
-
-void HUD::start()
-{
-    refreshTimer->start();
-}
-
-void HUD::stop()
-{
-    refreshTimer->stop();
+        else if (event->type() == QEvent::Show)
+        {
+            refreshTimer->start(updateInterval);
+        }
+    }
 }
 
 void HUD::updateValue(UASInterface* uas, QString name, double value, quint64 msec)
@@ -561,9 +557,9 @@ void HUD::paintEvent(QPaintEvent *event)
 
 void HUD::paintHUD()
 {
-//    static quint64 interval = 0;
-//    qDebug() << "INTERVAL:" << MG::TIME::getGroundTimeNow() - interval << __FILE__ << __LINE__;
-//    interval = MG::TIME::getGroundTimeNow();
+    //    static quint64 interval = 0;
+    //    qDebug() << "INTERVAL:" << MG::TIME::getGroundTimeNow() - interval << __FILE__ << __LINE__;
+    //    interval = MG::TIME::getGroundTimeNow();
 
     // Read out most important values to limit hash table lookups
     static float roll = 0.0f;

src/ui/HUD.h

@@ -60,11 +60,6 @@ public slots:
     void initializeGL();
     //void paintGL();
 
-    /** @brief Start updating the view at 30Hz */
-    void start();
-    /** @brief Stop updating the view */
-    void stop();
-
     /** @brief Set the currently monitored UAS */
     void setActiveUAS(UASInterface* uas);
 
@@ -124,7 +119,9 @@ protected:
     /** @brief Rotate a polygon around a point clockwise */
     void rotatePolygonClockWiseRad(QPolygonF& p, float angle, QPointF origin);
     /** @brief Override base class show */
-    virtual void showEvent(QShowEvent* event);
+    void showEvent(QShowEvent* event);
+
+    static const int updateInterval = 50;
 
     QImage* image; ///< Double buffer image
     QImage glImage; ///< The background / camera image

src/ui/MainWindow.cc

@@ -66,11 +66,19 @@ MainWindow::MainWindow(QWidget *parent):
         aboutToCloseFlag(false),
         settings()
 {
-    this->hide();
-    this->setVisible(false);
     // Get current settings
     settings.sync();
 
+    // Check if the settings exist, instantiate defaults if necessary
+    QString centralKey = buildMenuKey(SUB_SECTION_CHECKED, CENTRAL_MAP, currentView);
+    if (!settings.contains(centralKey))
+    {
+        settings.setValue(centralKey,true);
+        QString listKey = buildMenuKey(SUB_SECTION_CHECKED, MENU_UAS_LIST, currentView);
+        settings.setValue(listKey, true);
+    }
+    settings.sync();
+
     // Setup user interface
     ui.setupUi(this);
 
@@ -109,7 +117,6 @@ MainWindow::MainWindow(QWidget *parent):
     }
 
     // Enable and update view
-    this->show();
     presentView();
 }
 
@@ -127,11 +134,11 @@ void MainWindow::buildCommonWidgets()
     // Dock widgets
     controlDockWidget = new QDockWidget(tr("Control"), this);
     controlDockWidget->setWidget( new UASControlWidget(this) );
-    addToToolsMenu (controlDockWidget, tr("UAS Control"), SLOT(showToolWidget()), MENU_UAS_CONTROL, Qt::LeftDockWidgetArea);
+    addToToolsMenu (controlDockWidget, tr("Control"), SLOT(showToolWidget()), MENU_UAS_CONTROL, Qt::LeftDockWidgetArea);
 
     listDockWidget = new QDockWidget(tr("Unmanned Systems"), this);
     listDockWidget->setWidget( new UASListWidget(this) );
-    addToToolsMenu (listDockWidget, tr("UAS List"), SLOT(showToolWidget()), MENU_UAS_LIST, Qt::RightDockWidgetArea);
+    addToToolsMenu (listDockWidget, tr("Unmanned Systems"), SLOT(showToolWidget()), MENU_UAS_LIST, Qt::RightDockWidgetArea);
 
     waypointsDockWidget = new QDockWidget(tr("Waypoint List"), this);
     waypointsDockWidget->setWidget( new WaypointList(this, NULL) );
@@ -141,7 +148,6 @@ void MainWindow::buildCommonWidgets()
     infoDockWidget->setWidget( new UASInfoWidget(this) );
     addToToolsMenu (infoDockWidget, tr("Status Details"), SLOT(showToolWidget()), MENU_STATUS, Qt::RightDockWidgetArea);
 
-
     debugConsoleDockWidget = new QDockWidget(tr("Communication Console"), this);
     debugConsoleDockWidget->setWidget( new DebugConsole(this) );
     addToToolsMenu (debugConsoleDockWidget, tr("Communication Console"), SLOT(showToolWidget()), MENU_DEBUG_CONSOLE, Qt::BottomDockWidgetArea);
@@ -152,8 +158,6 @@ void MainWindow::buildCommonWidgets()
 
     protocolWidget    = new XMLCommProtocolWidget(this);
     addToCentralWidgetsMenu (protocolWidget, "Mavlink Generator", SLOT(showCentralWidget()),CENTRAL_PROTOCOL);
-
-
 }
 
 void MainWindow::buildPxWidgets()
@@ -194,7 +198,7 @@ void MainWindow::buildPxWidgets()
     addToCentralWidgetsMenu(_3DMapWidget, "OSG Earth 3D", SLOT(showCentralWidget()), CENTRAL_OSGEARTH);
 #endif
 
-#if (defined Q_OS_WIN) | (defined Q_OS_MAC)
+#if (defined _MSC_VER) | (defined Q_OS_MAC)
     gEarthWidget = new QGCGoogleEarthView(this);
     addToCentralWidgetsMenu(gEarthWidget, "Google Earth", SLOT(showCentralWidget()), CENTRAL_GOOGLE_EARTH);
 
@@ -222,7 +226,6 @@ void MainWindow::buildPxWidgets()
 
     headDown1DockWidget = new QDockWidget(tr("System Stats"), this);
     headDown1DockWidget->setWidget( new HDDisplay(acceptList, this) );
-
     addToToolsMenu (headDown1DockWidget, tr("Flight Display"), SLOT(showToolWidget()), MENU_HDD_1, Qt::RightDockWidgetArea);
 
     headDown2DockWidget = new QDockWidget(tr("Payload Status"), this);
@@ -282,12 +285,14 @@ void MainWindow::buildSlugsWidgets()
 void MainWindow::addToCentralWidgetsMenu ( QWidget* widget,
                                            const QString title,
                                            const char * slotName,
-                                           TOOLS_WIDGET_NAMES centralWidget){
+                                           TOOLS_WIDGET_NAMES centralWidget)
+{
     QAction* tempAction;
 
 
     // Add the separator that will separate tools from central Widgets
-    if (!toolsMenuActions[CENTRAL_SEPARATOR]){
+    if (!toolsMenuActions[CENTRAL_SEPARATOR])
+    {
         tempAction = ui.menuTools->addSeparator();
         toolsMenuActions[CENTRAL_SEPARATOR] = tempAction;
         tempAction->setData(CENTRAL_SEPARATOR);
@@ -304,17 +309,18 @@ void MainWindow::addToCentralWidgetsMenu ( QWidget* widget,
 
     QString chKey = buildMenuKey(SUB_SECTION_CHECKED, centralWidget, currentView);
 
-    if (!settings.contains(chKey)){
+    if (!settings.contains(chKey))
+    {
         settings.setValue(chKey,false);
         tempAction->setChecked(false);
     }
-    //  else {
-    //    tempAction->setChecked(settings.value(chKey).toBool());
-    //  }
+    else
+    {
+        tempAction->setChecked(settings.value(chKey).toBool());
+    }
 
     // connect the action
     connect(tempAction,SIGNAL(triggered()),this, slotName);
-
 }
 
 
@@ -373,11 +379,14 @@ void MainWindow::addToToolsMenu ( QWidget* widget,
     QString posKey, chKey;
 
 
-    if (toolsMenuActions[CENTRAL_SEPARATOR]){
+    if (toolsMenuActions[CENTRAL_SEPARATOR])
+    {
         tempAction = new QAction(title, this);
         ui.menuTools->insertAction(toolsMenuActions[CENTRAL_SEPARATOR],
                                    tempAction);
-    } else {
+    }
+    else
+    {
         tempAction = ui.menuTools->addAction(title);
     }
 
@@ -391,7 +400,8 @@ void MainWindow::addToToolsMenu ( QWidget* widget,
 
     posKey = buildMenuKey (SUB_SECTION_LOCATION,tool, currentView);
 
-    if (!settings.contains(posKey)){
+    if (!settings.contains(posKey))
+    {
         settings.setValue(posKey,location);
         dockWidgetLocations[tool] = location;
     }
@@ -406,6 +416,7 @@ void MainWindow::addToToolsMenu ( QWidget* widget,
     {
         settings.setValue(chKey,false);
         tempAction->setChecked(false);
+        widget->setVisible(false);
     }
     else
     {
@@ -475,13 +486,13 @@ void MainWindow::showTheWidget (TOOLS_WIDGET_NAMES widget, VIEW_SECTIONS view)
 
     tempLocation = static_cast <Qt::DockWidgetArea>(settings.value(buildMenuKey (SUB_SECTION_LOCATION,widget, view), QVariant(Qt::RightDockWidgetArea)).toInt());
 
-    if (widget == MainWindow::MENU_UAS_LIST)
-    {
-        if (!settings.contains(buildMenuKey (SUB_SECTION_LOCATION,widget, view)))
-        {
-            tempLocation = Qt::RightDockWidgetArea;
-        }
-    }
+//    if (widget == MainWindow::MENU_UAS_LIST)
+//    {
+//        if (!settings.contains(buildMenuKey (SUB_SECTION_LOCATION,widget, view)))
+//        {
+//            tempLocation = Qt::RightDockWidgetArea;
+//        }
+//    }
 
     if ((tempWidget != NULL) && tempVisible)
     {
@@ -565,13 +576,6 @@ void MainWindow::updateLocationSettings (Qt::DockWidgetArea location)
             break;
         }
     }
-    //=======
-    //    addDockWidget(Qt::BottomDockWidgetArea, slugsCamControlWidget);
-    //    slugsCamControlWidget->hide();
-
-    //    //FIXME: free memory in destructor
-    //    joystick    = new JoystickInput();
-    //>>>>>>> master
 }
 
 /**
@@ -600,26 +604,11 @@ void MainWindow::connectCommonWidgets()
 
 void MainWindow::connectPxWidgets()
 {
-    if (linechartWidget)
-    {
-        connect(linechartWidget, SIGNAL(logfileWritten(QString)),
-                this, SLOT(loadDataView(QString)));
-    }
-
+    // No special connections necessary at this point
 }
 
 void MainWindow::connectSlugsWidgets()
 {
-    if (linechartWidget)
-    {
-        connect(UASManager::instance(), SIGNAL(UASCreated(UASInterface*)),
-                linechartWidget, SLOT(addSystem(UASInterface*)));
-        connect(UASManager::instance(), SIGNAL(activeUASSet(int)),
-                linechartWidget, SLOT(selectSystem(int)));
-        connect(linechartWidget, SIGNAL(logfileWritten(QString)),
-                this, SLOT(loadDataView(QString)));
-    }
-
     if (slugsHilSimWidget && slugsHilSimWidget->widget()){
         connect(UASManager::instance(), SIGNAL(activeUASSet(UASInterface*)),
                 slugsHilSimWidget->widget(), SLOT(activeUasSet(UASInterface*)));
@@ -661,7 +650,7 @@ void MainWindow::arrangePxCenterStack()
 #ifdef QGC_OSGEARTH_ENABLED
     if (_3DMapWidget) centerStack->addWidget(_3DMapWidget);
 #endif
-#if (defined Q_OS_WIN) | (defined Q_OS_MAC)
+#if (defined _MSC_VER) | (defined Q_OS_MAC)
     if (gEarthWidget) centerStack->addWidget(gEarthWidget);
 #endif
     if (hudWidget) centerStack->addWidget(hudWidget);
@@ -678,8 +667,6 @@ void MainWindow::arrangeSlugsCenterStack()
     }
 
     if (linechartWidget) centerStack->addWidget(linechartWidget);
-
-
     if (hudWidget) centerStack->addWidget(hudWidget);
 
 }
@@ -802,7 +789,6 @@ void MainWindow::showStatusMessage(const QString& status)
 **/
 void MainWindow::connectCommonActions()
 {
-
     // Connect actions from ui
     connect(ui.actionAdd_Link, SIGNAL(triggered()), this, SLOT(addLink()));
 
@@ -829,12 +815,10 @@ void MainWindow::connectCommonActions()
     connect(ui.actionOnline_documentation, SIGNAL(triggered()), this, SLOT(showHelp()));
     connect(ui.actionDeveloper_Credits, SIGNAL(triggered()), this, SLOT(showCredits()));
     connect(ui.actionProject_Roadmap, SIGNAL(triggered()), this, SLOT(showRoadMap()));
-
 }
 
 void MainWindow::connectPxActions()
 {
-
     ui.actionJoystickSettings->setVisible(true);
 
     // Joystick configuration
@@ -906,8 +890,6 @@ void MainWindow::addLink()
     ui.menuNetwork->addAction(commWidget->getAction());
 
     commWidget->show();
-
-    // TODO Implement the link removal!
 }
 
 void MainWindow::addLink(LinkInterface *link)
@@ -1079,39 +1061,6 @@ void MainWindow::UASCreated(UASInterface* uas)
  */
 void MainWindow::clearView()
 {
-    // Halt HUD central widget
-    if (hudWidget) hudWidget->stop();
-
-    // Disable linechart
-    if (linechartWidget) linechartWidget->setActive(false);
-
-    // Halt HDDs
-    if (headDown1DockWidget)
-    {
-        HDDisplay* hddWidget = dynamic_cast<HDDisplay*>( headDown1DockWidget->widget() );
-        if (hddWidget) hddWidget->stop();
-    }
-
-    if (headDown2DockWidget)
-    {
-        HDDisplay* hddWidget = dynamic_cast<HDDisplay*>( headDown2DockWidget->widget() );
-        if (hddWidget) hddWidget->stop();
-    }
-
-    // Halt HSI
-    if (hsiDockWidget)
-    {
-        HSIDisplay* hsi = dynamic_cast<HSIDisplay*>( hsiDockWidget->widget() );
-        if (hsi) hsi->stop();
-    }
-
-    // Halt HUD if in docked widget mode
-    if (headUpDockWidget)
-    {
-        HUD* hud = dynamic_cast<HUD*>( headUpDockWidget->widget() );
-        if (hud) hud->stop();
-    }
-
     // Remove all dock widgets from main window
     QObjectList childList( this->children() );
 
@@ -1171,34 +1120,37 @@ void MainWindow::loadMAVLinkView()
 void MainWindow::presentView()
 {
 
-
-#ifdef QGC_OSG_ENABLED
-    // 3D map
-    if (_3DWidget)
-    {
-        if (centerStack)
-        {
-            //map3DWidget->setActive(true);
-            centerStack->setCurrentWidget(_3DWidget);
-        }
-    }
-#endif
+    showTheCentralWidget(CENTRAL_3D_LOCAL, currentView);
+    showTheCentralWidget(CENTRAL_3D_MAP, currentView);
+//#ifdef QGC_OSG_ENABLED
+//    // 3D map
+//    if (_3DWidget)
+//    {
+//        if (centerStack)
+//        {
+//            //map3DWidget->setActive(true);
+//            centerStack->setCurrentWidget(_3DWidget);
+//        }
+//    }
+//#endif
 
     qDebug() << "LC";
     showTheCentralWidget(CENTRAL_LINECHART, currentView);
-    if (linechartWidget)
-    {
-        qDebug () << buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_LINECHART,currentView) <<
-                settings.value(buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_LINECHART,currentView)).toBool() ;
-        if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_LINECHART,currentView)).toBool()){
-            if (centerStack) {
-                linechartWidget->setActive(true);
-                centerStack->setCurrentWidget(linechartWidget);
-            }
-        } else {
-            linechartWidget->setActive(false);
-        }
-    }
+
+
+    // FIXME
+
+//    if (linechartWidget)
+//    {
+//        qDebug () << buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_LINECHART,currentView) <<
+//                settings.value(buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_LINECHART,currentView)).toBool() ;
+//        if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_LINECHART,currentView)).toBool()){
+//            if (centerStack)
+//            {
+//                centerStack->setCurrentWidget(linechartWidget);
+//            }
+//        }
+//    }
 
 
 
@@ -1212,19 +1164,16 @@ void MainWindow::presentView()
 
     // HEAD UP DISPLAY
     showTheCentralWidget(CENTRAL_HUD, currentView);
-    qDebug() << "HUD";
-    if (hudWidget){
-        qDebug() << buildMenuKey(SUB_SECTION_CHECKED,CENTRAL_HUD,currentView) <<
-                settings.value(buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_HUD,currentView)).toBool();
-        if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_HUD,currentView)).toBool()){
-            if (centerStack) {
-                centerStack->setCurrentWidget(hudWidget);
-                hudWidget->start();
-            }
-        } else {
-            hudWidget->stop();
-        }
-    }
+//    qDebug() << "HUD";
+//    if (hudWidget){
+//        qDebug() << buildMenuKey(SUB_SECTION_CHECKED,CENTRAL_HUD,currentView) <<
+//                settings.value(buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_HUD,currentView)).toBool();
+//        if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,CENTRAL_HUD,currentView)).toBool()){
+//            if (centerStack) {
+//                centerStack->setCurrentWidget(hudWidget);
+//            }
+//        }
+//    }
 
     // Show docked widgets based on current view and autopilot type
 
@@ -1259,12 +1208,10 @@ void MainWindow::presentView()
         HUD* tmpHud = dynamic_cast<HUD*>( headUpDockWidget->widget() );
         if (tmpHud){
             if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,MENU_HUD,currentView)).toBool()){
-                tmpHud->start();
                 addDockWidget(static_cast <Qt::DockWidgetArea>(settings.value(buildMenuKey (SUB_SECTION_LOCATION,MENU_HUD, currentView)).toInt()),
                               hsiDockWidget);
                 headUpDockWidget->show();
             } else {
-                tmpHud->stop();
                 headUpDockWidget->hide();
             }
         }
@@ -1288,57 +1235,52 @@ void MainWindow::presentView()
 
     // HORIZONTAL SITUATION INDICATOR
     showTheWidget(MENU_HSI, currentView);
-    if (hsiDockWidget)
-    {
-        HSIDisplay* hsi = dynamic_cast<HSIDisplay*>( hsiDockWidget->widget() );
-        if (hsi){
-            if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,MENU_HSI,currentView)).toBool()){
-                hsi->start();
-                addDockWidget(static_cast <Qt::DockWidgetArea>(settings.value(buildMenuKey (SUB_SECTION_LOCATION,MENU_HSI, currentView)).toInt()),
-                              hsiDockWidget);
-                hsiDockWidget->show();
-            } else {
-                hsi->stop();
-                hsiDockWidget->hide();
-            }
-        }
-    }
+//    if (hsiDockWidget)
+//    {
+//        HSIDisplay* hsi = dynamic_cast<HSIDisplay*>( hsiDockWidget->widget() );
+//        if (hsi){
+//            if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,MENU_HSI,currentView)).toBool()){
+//                addDockWidget(static_cast <Qt::DockWidgetArea>(settings.value(buildMenuKey (SUB_SECTION_LOCATION,MENU_HSI, currentView)).toInt()),
+//                              hsiDockWidget);
+//            }
+//        }
+//    }
 
     // HEAD DOWN 1
     showTheWidget(MENU_HDD_1, currentView);
-    if (headDown1DockWidget)
-    {
-        HDDisplay *hdd = dynamic_cast<HDDisplay*>(headDown1DockWidget->widget());
-        if (hdd) {
-            if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,MENU_HDD_1,currentView)).toBool()) {
-                addDockWidget(static_cast <Qt::DockWidgetArea>(settings.value(buildMenuKey (SUB_SECTION_LOCATION,MENU_HDD_1, currentView)).toInt()),
-                              headDown1DockWidget);
-                headDown1DockWidget->show();
-                hdd->start();
-            } else {
-                headDown1DockWidget->hide();;
-                hdd->stop();
-            }
-        }
-    }
+//    if (headDown1DockWidget)
+//    {
+//        HDDisplay *hdd = dynamic_cast<HDDisplay*>(headDown1DockWidget->widget());
+//        if (hdd) {
+//            if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,MENU_HDD_1,currentView)).toBool()) {
+//                addDockWidget(static_cast <Qt::DockWidgetArea>(settings.value(buildMenuKey (SUB_SECTION_LOCATION,MENU_HDD_1, currentView)).toInt()),
+//                              headDown1DockWidget);
+//                headDown1DockWidget->show();
+//                hdd->start();
+//            } else {
+//                headDown1DockWidget->hide();;
+//                hdd->stop();
+//            }
+//        }
+//    }
 
     // HEAD DOWN 2
     showTheWidget(MENU_HDD_2, currentView);
-    if (headDown2DockWidget)
-    {
-        HDDisplay *hdd = dynamic_cast<HDDisplay*>(headDown2DockWidget->widget());
-        if (hdd){
-            if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,MENU_HDD_2,currentView)).toBool()){
-                addDockWidget(static_cast <Qt::DockWidgetArea>(settings.value(buildMenuKey (SUB_SECTION_LOCATION,MENU_HDD_2, currentView)).toInt()),
-                              headDown2DockWidget);
-                headDown2DockWidget->show();
-                hdd->start();
-            } else {
-                headDown2DockWidget->hide();
-                hdd->stop();
-            }
-        }
-    }
+//    if (headDown2DockWidget)
+//    {
+//        HDDisplay *hdd = dynamic_cast<HDDisplay*>(headDown2DockWidget->widget());
+//        if (hdd){
+//            if (settings.value(buildMenuKey (SUB_SECTION_CHECKED,MENU_HDD_2,currentView)).toBool()){
+//                addDockWidget(static_cast <Qt::DockWidgetArea>(settings.value(buildMenuKey (SUB_SECTION_LOCATION,MENU_HDD_2, currentView)).toInt()),
+//                              headDown2DockWidget);
+//                headDown2DockWidget->show();
+//                hdd->start();
+//            } else {
+//                headDown2DockWidget->hide();
+//                hdd->stop();
+//            }
+//        }
+//    }
 
     this->show();
 
@@ -1418,7 +1360,7 @@ void MainWindow::load3DMapView()
 
 void MainWindow::loadGoogleEarthView()
 {
-#if (defined Q_OS_WIN) | (defined Q_OS_MAC)
+#if (defined _MSC_VER) | (defined Q_OS_MAC)
     clearView();
 
     // 3D map

src/ui/MainWindow.h

@@ -260,7 +260,7 @@ protected:
      * @param tool      The ENUM defined in MainWindow.h that is associated to the widget
      * @param location  The default location for the QDockedWidget in case there is no previous key in the settings
      */
-    void addToToolsMenu (QWidget* widget, const QString title, const char * slotName, TOOLS_WIDGET_NAMES tool, Qt::DockWidgetArea location);
+    void addToToolsMenu (QWidget* widget, const QString title, const char * slotName, TOOLS_WIDGET_NAMES tool, Qt::DockWidgetArea location=Qt::RightDockWidgetArea);
 
     /**
      * @brief Determines if a QDockWidget needs to be show and if so, shows it
@@ -353,7 +353,9 @@ protected:
     #ifdef QGC_OSGEARTH_ENABLED
     QPointer<QWidget> _3DMapWidget;
     #endif
+#if (defined _MSC_VER) || (defined Q_OS_MAC)
     QPointer<QGCGoogleEarthView> gEarthWidget;
+#endif
     // Dock widgets
     QPointer<QDockWidget> controlDockWidget;
     QPointer<QDockWidget> infoDockWidget;

src/ui/linechart/LinechartWidget.h

@@ -90,7 +90,6 @@ public slots:
     void refresh();
 
 protected:
-
     void addCurveToList(QString curve);
     void removeCurveFromList(QString curve);
     QToolButton* createButton(QWidget* parent);

src/ui/linechart/Linecharts.cc

@@ -1,6 +1,10 @@
+#include <QShowEvent>
+
 #include "Linecharts.h"
 #include "UASManager.h"
 
+#include "MainWindow.h"
+
 Linecharts::Linecharts(QWidget *parent) :
         QStackedWidget(parent),
         plots(),
@@ -19,24 +23,37 @@ Linecharts::Linecharts(QWidget *parent) :
           this, SLOT(addSystem(UASInterface*)));
   connect(UASManager::instance(), SIGNAL(activeUASSet(int)),
           this, SLOT(selectSystem(int)));
+  connect(this, SIGNAL(logfileWritten(QString)),
+          MainWindow::instance(), SLOT(loadDataView(QString)));
 }
 
-
-void Linecharts::setActive(bool active)
+void Linecharts::showEvent(QShowEvent* event)
 {
-    this->active = active;
+    // React only to internal (pre-display)
+    // events
+    if (!event->spontaneous())
+    {
         QWidget* prevWidget = currentWidget();
         if (prevWidget)
         {
             LinechartWidget* chart = dynamic_cast<LinechartWidget*>(prevWidget);
             if (chart)
             {
-            chart->setActive(active);
+                if (event->type() == QEvent::Hide)
+                {
+                    this->active = false;
+                    chart->setActive(false);
+                }
+                else if (event->type() == QEvent::Show)
+                {
+                    this->active = true;
+                    chart->setActive(true);
+                }
+            }
         }
     }
 }
 
-
 void Linecharts::selectSystem(int systemid)
 {
     QWidget* prevWidget = currentWidget();

src/ui/linechart/Linecharts.h

@@ -18,8 +18,6 @@ signals:
     void logfileWritten(QString fileName);
 
 public slots:
-    /** @brief Set all plots active/inactive */
-    void setActive(bool active);
     /** @brief Select plot for one system */
     void selectSystem(int systemid);
     /** @brief Add a new system to the list of plots */
@@ -28,6 +26,9 @@ public slots:
 protected:
     QMap<int, LinechartWidget*> plots;
     bool active;
+
+    void showEvent(QShowEvent* event);
+
 };
 
 #endif // LINECHARTS_H

src/ui/map3D/Q3DWidget.h

@@ -121,6 +121,10 @@ protected slots:
     void redraw(void);
 
 protected:
+
+    /** @brief Enable / disable widget updating */
+    void showEvent(QShowEvent* event);
+
     /**
      * @brief Get base robot geode.
      * @return Smart pointer to the geode.

src/ui/map3D/QGCGoogleEarthView.cc

@@ -1,16 +1,17 @@
 #include <QApplication>
 #include <QDir>
+#include <QShowEvent>
 
 #include <QDebug>
 #include "UASManager.h"
-#ifdef _MSC_VER
-#include "ui_QGCGoogleEarthView.h"
-#else
+
+#ifdef Q_OS_MAC
 #include <QWebFrame>
 #include <QWebPage>
 #include "QGCWebPage.h"
-#include "ui_QGCGoogleEarthView.h"
 #endif
+
+#include "ui_QGCGoogleEarthView.h"
 #include "QGCGoogleEarthView.h"
 
 QGCGoogleEarthView::QGCGoogleEarthView(QWidget *parent) :
@@ -64,7 +65,7 @@ QGCGoogleEarthView::QGCGoogleEarthView(QWidget *parent) :
     // Get list of available 3D models
 
     // Load HTML file
-	#ifdef _MSC_VER
+#ifdef _MSC_VER
     webViewWin->dynamicCall("GoHome()");
     webViewWin->dynamicCall("Navigate(const QString&)", QApplication::applicationDirPath() + "/earth.html");
 #endif
@@ -99,14 +100,20 @@ void QGCGoogleEarthView::follow(bool follow)
     followCamera = follow;
 }
 
-void QGCGoogleEarthView::hide()
+void QGCGoogleEarthView::showEvent(QShowEvent* event)
 {
+    // React only to internal (pre-display)
+    // events
+    if (!event->spontaneous())
+    {
+        if (event->type() == QEvent::Hide)
+        {
+            // Disable widget
             updateTimer->stop();
-    QWidget::hide();
-}
-
-void QGCGoogleEarthView::show()
-{
+        }
+        else if (event->type() == QEvent::Show)
+        {
+            // Enable widget, initialize on first run
             if (!webViewInitialized)
             {
 #if (defined Q_OS_MAC)
@@ -121,21 +128,32 @@ void QGCGoogleEarthView::show()
 #endif
                 webViewInitialized = true;
             }
+        }
         updateTimer->start();
-    QWidget::show();
+    }
 }
 
 void QGCGoogleEarthView::updateState()
 {
-#ifdef Q_OS_MAC
     if (isVisible())
     {
+#ifdef Q_OS_MAC
         if (webViewMac->page()->currentFrame()->evaluateJavaScript("isInitialized();").toBool())
         {
+#endif
+#ifdef _MSC_VER
+            //        if (webViewMacWin->dynamicCall("Navigate(const QString&)","isInitialized();").toBool())
+            //        {
+#endif
             static bool initialized = false;
             if (!initialized)
             {
+#ifdef Q_OS_MAC
                 webViewMac->page()->currentFrame()->evaluateJavaScript("setGCSHome(22.679833,8.549444, 470);");
+#endif
+#ifdef _MSC_VER
+                //webViewMac->page()->currentFrame()->evaluateJavaScript("setGCSHome(22.679833,8.549444, 470);");
+#endif
                 initialized = true;
             }
             int uasId = 0;
@@ -157,6 +175,7 @@ void QGCGoogleEarthView::updateState()
                 pitch = mav->getPitch();
                 yaw = mav->getYaw();
             }
+            #ifdef Q_OS_MAC
             webViewMac->page()->currentFrame()->evaluateJavaScript(QString("setAircraftPositionAttitude(%1, %2, %3, %4, %6, %7, %8);")
                                                                    .arg(uasId)
                                                                    .arg(lat)
@@ -165,14 +184,23 @@ void QGCGoogleEarthView::updateState()
                                                                    .arg(roll)
                                                                    .arg(pitch)
                                                                    .arg(yaw));
+#endif
+#ifdef _MSC_VER
+
+#endif
 
             if (followCamera)
             {
+#ifdef Q_OS_MAC
                 webViewMac->page()->currentFrame()->evaluateJavaScript(QString("updateFollowAircraft()"));
+#endif
+#ifdef _MSC_VER
+#endif
             }
-        }
+#if (defined Q_OS_MAC) || (defined _MSC_VER)
         }
 #endif
+    }
 }
 
 

src/ui/map3D/QGCGoogleEarthView.h

@@ -62,10 +62,6 @@ public slots:
     void showWaypoints(bool state);
     /** @brief Follow the aircraft during flight */
     void follow(bool follow);
-    /** @brief Hide and deactivate */
-    void hide();
-    /** @brief Show and activate */
-    void show();
 
 protected:
     void changeEvent(QEvent *e);
@@ -82,6 +78,9 @@ protected:
     QWebView* webViewMac;
 #endif
 
+    /** @brief Enable / disable widget updating */
+    void showEvent(QShowEvent* event);
+
 private:
 #ifdef _MSC_VER
     Ui::QGCGoogleEarthView* ui;

src/ui/uas/QGCUnconnectedInfoWidget.cc

@@ -1,4 +1,8 @@
 #include "QGCUnconnectedInfoWidget.h"
+#include "LinkInterface.h"
+#include "LinkManager.h"
+#include "MAVLinkSimulationLink.h"
+#include "MainWindow.h"
 #include "ui_QGCUnconnectedInfoWidget.h"
 
 QGCUnconnectedInfoWidget::QGCUnconnectedInfoWidget(QWidget *parent) :
@@ -7,11 +11,36 @@ QGCUnconnectedInfoWidget::QGCUnconnectedInfoWidget(QWidget *parent) :
 {
     ui->setupUi(this);
 
-    connect(ui->simulationButton, SIGNAL(clicked()), this, SIGNAL(simulation()));
-    connect(ui->connectButton, SIGNAL(clicked()), this, SIGNAL(addLink()));
+    connect(ui->simulationButton, SIGNAL(clicked()), this, SLOT(simulate()));
+    connect(ui->connectButton, SIGNAL(clicked()), this, SLOT(addLink()));
 }
 
 QGCUnconnectedInfoWidget::~QGCUnconnectedInfoWidget()
 {
     delete ui;
 }
+
+/**
+ * @brief Starts the system simulation
+ */
+void QGCUnconnectedInfoWidget::simulate()
+{
+    // Try to get reference to MAVLinkSimulationlink
+    QList<LinkInterface*> links = LinkManager::instance()->getLinks();
+    foreach(LinkInterface* link, links)
+    {
+        MAVLinkSimulationLink* sim = dynamic_cast<MAVLinkSimulationLink*>(link);
+        if (sim)
+        {
+            sim->connectLink();
+        }
+    }
+}
+
+/**
+ * @return Opens a "Connect new Link" popup
+ */
+void QGCUnconnectedInfoWidget::addLink()
+{
+    MainWindow::instance()->addLink();
+}

src/ui/uas/QGCUnconnectedInfoWidget.h

@@ -7,6 +7,16 @@ namespace Ui {
     class QGCUnconnectedInfoWidget;
 }
 
+/**
+ * @brief Widget providing initial instructions
+ *
+ * This widget provides initial instructions to new users how
+ * to connect a simulation or a live link to a system to
+ * QGroundControl. The widget should be automatically be
+ * unloaded and destroyed once the first MAV/UAS is connected.
+ *
+ * @see UASListWidget
+ */
 class QGCUnconnectedInfoWidget : public QWidget
 {
     Q_OBJECT
@@ -17,8 +27,10 @@ public:
 
     Ui::QGCUnconnectedInfoWidget *ui;
 
-signals:
-    void simulation();
+public slots:
+    /** @brief Start simulation */
+    void simulate();
+    /** @brief Add a link */
     void addLink();
 };
 

src/ui/uas/QGCUnconnectedInfoWidget.ui

@@ -35,15 +35,20 @@
       <string>&lt;!DOCTYPE HTML PUBLIC &quot;-//W3C//DTD HTML 4.0//EN&quot; &quot;http://www.w3.org/TR/REC-html40/strict.dtd&quot;&gt;
 &lt;html&gt;&lt;head&gt;&lt;meta name=&quot;qrichtext&quot; content=&quot;1&quot; /&gt;&lt;style type=&quot;text/css&quot;&gt;
 p, li { white-space: pre-wrap; }
-&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'Ubuntu'; font-size:11pt; font-weight:400; font-style:normal;&quot;&gt;
+&lt;/style&gt;&lt;/head&gt;&lt;body style=&quot; font-family:'MS Shell Dlg 2'; font-size:8.25pt; font-weight:400; font-style:normal;&quot;&gt;
 &lt;table border=&quot;0&quot; style=&quot;-qt-table-type: root; margin-top:4px; margin-bottom:4px; margin-left:4px; margin-right:4px;&quot;&gt;
 &lt;tr&gt;
 &lt;td style=&quot;border: none;&quot;&gt;
-&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-size:14pt; font-weight:600;&quot;&gt;Unmanned System List&lt;/span&gt;&lt;/p&gt;
-&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:6pt; font-weight:600;&quot;&gt;&lt;/p&gt;
-&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-size:10pt; font-weight:600;&quot;&gt;No Systems are connected yet.&lt;/span&gt;&lt;span style=&quot; font-size:10pt;&quot;&gt; Please either connect a link or use the simulation function to see QGroundControl in action.&lt;/span&gt;&lt;/p&gt;
-&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-size:10pt;&quot;&gt;&lt;/p&gt;
-&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-size:10pt; font-style:italic;&quot;&gt;Click on the simulation button below to simulate a micro air vehicle or on the connect link button to connect a serial port link. A UDP link is already open for connections.&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/body&gt;&lt;/html&gt;</string>
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:12pt; font-weight:600;&quot;&gt;Unmanned System List&lt;/span&gt;&lt;/p&gt;
+&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:'Ubuntu'; font-size:6pt; font-weight:600;&quot;&gt;&lt;/p&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:9pt; font-weight:600;&quot;&gt;No Systems are connected yet.&lt;/span&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:9pt;&quot;&gt; Please either connect a link or use the simulation function to see QGroundControl in action.&lt;/span&gt;&lt;/p&gt;
+&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:'Ubuntu'; font-size:9pt;&quot;&gt;&lt;/p&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:9pt; font-style:italic;&quot;&gt;Click on the simulation button below to simulate a micro air vehicle or on the connect link button to connect a serial port link. A UDP link is already open for connections on port &lt;/span&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:9pt; font-weight:600; font-style:italic;&quot;&gt;14550&lt;/span&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:9pt; font-style:italic;&quot;&gt;.&lt;/span&gt;&lt;/p&gt;
+&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:'Ubuntu'; font-size:9pt; font-style:italic;&quot;&gt;&lt;/p&gt;
+&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:'Ubuntu'; font-size:9pt; font-style:italic;&quot;&gt;&lt;/p&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:10pt; font-weight:600;&quot;&gt;Communication Link Help:&lt;/span&gt;&lt;/p&gt;
+&lt;p style=&quot;-qt-paragraph-type:empty; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px; font-family:'Ubuntu'; font-size:9pt; font-style:italic;&quot;&gt;&lt;/p&gt;
+&lt;p style=&quot; margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;&quot;&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:9pt;&quot;&gt;If you encounter communication problems on your link (e.g. no MAV is shown in the list after connecting the link), please check if you receive data on the link using the communication console. Select &lt;/span&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:9pt; font-weight:600;&quot;&gt;Tools -&amp;gt; Communication Console&lt;/span&gt;&lt;span style=&quot; font-family:'Ubuntu'; font-size:9pt;&quot;&gt; to enable it. The console should show incoming traffic and some used bandwidth (e.g. 1.43 kB/s on the indicator).&lt;/span&gt;&lt;/p&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/table&gt;&lt;/body&gt;&lt;/html&gt;</string>
      </property>
     </widget>
    </item>

src/ui/uas/UASListWidget.cc

@@ -57,9 +57,6 @@ UASListWidget::UASListWidget(QWidget *parent) : QWidget(parent), m_ui(new Ui::UA
     uWidget = new QGCUnconnectedInfoWidget(this);
     listLayout->addWidget(uWidget);
 
-    connect(uWidget, SIGNAL(addLink()), this, SLOT(addLink()));
-    connect(uWidget, SIGNAL(simulation()), this, SLOT(simulate()));
-
     this->setMinimumWidth(250);
 
     uasViews = QMap<UASInterface*, UASView*>();
@@ -84,25 +81,6 @@ void UASListWidget::changeEvent(QEvent *e)
     }
 }
 
-void UASListWidget::addLink()
-{
-    MainWindow::instance()->addLink();
-}
-
-void UASListWidget::simulate()
-{
-    // Try to get reference to MAVLinkSimulationlink
-    QList<LinkInterface*> links = LinkManager::instance()->getLinks();
-    foreach(LinkInterface* link, links)
-    {
-        MAVLinkSimulationLink* sim = dynamic_cast<MAVLinkSimulationLink*>(link);
-        if (sim)
-        {
-            sim->connectLink();
-        }
-    }
-}
-
 void UASListWidget::addUAS(UASInterface* uas)
 {
     if (uasViews.isEmpty())

src/ui/uas/UASListWidget.h

@@ -52,10 +52,6 @@ public slots:
     void activeUAS(UASInterface* uas);
     void removeUAS(UASInterface* uas);
 
-    // TODO Kind of hack, works flawless but is bad architecture
-    void addLink();
-    void simulate();
-
 protected:
     QMap<UASInterface*, UASView*> uasViews;
     QVBoxLayout* listLayout;

src/ui/uas/UASView.cc

@@ -173,14 +173,46 @@ void UASView::mouseDoubleClickEvent (QMouseEvent * event)
 
 void UASView::enterEvent(QEvent* event)
 {
-    if (event->MouseMove) emit uasInFocus(uas);
+    if (event->type() == QEvent::MouseMove)
+    {
+        emit uasInFocus(uas);
+        if (uas != UASManager::instance()->getActiveUAS())
+        {
+            grabMouse(QCursor(Qt::PointingHandCursor));
+        }
+    }
     qDebug() << __FILE__ << __LINE__ << "IN FOCUS";
+
+    if (event->type() == QEvent::MouseButtonDblClick)
+    {
+        qDebug() << __FILE__ << __LINE__ << "UAS CLICKED!";
+    }
 }
 
 void UASView::leaveEvent(QEvent* event)
 {
-    if (event->MouseMove) emit uasOutFocus(uas);
-    qDebug() << __FILE__ << __LINE__ << "OUT OF FOCUS";
+    if (event->type() == QEvent::MouseMove)
+    {
+        emit uasOutFocus(uas);
+        releaseMouse();
+    }
+}
+
+void UASView::showEvent(QShowEvent* event)
+{
+    // React only to internal (pre-display)
+    // events
+    if (!event->spontaneous())
+    {
+        if (event->type() == QEvent::Hide)
+        {
+            refreshTimer->stop();
+        }
+        else if (event->type() == QEvent::Show)
+        {
+            refreshTimer->start(updateInterval);
+        }
+    }
 }
 
 void UASView::receiveHeartbeat(UASInterface* uas)

src/ui/uas/UASView.h

@@ -107,6 +107,8 @@ protected:
     void enterEvent(QEvent* event);
     /** @brief Mouse leaves the widget */
     void leaveEvent(QEvent* event);
+    /** @brief Enable / disable widget updating */
+    void showEvent(QShowEvent* event);
 
 private:
     Ui::UASView *m_ui;