Fixed #722 - Ensure that application is in front of other application what dragging floating windows

src/DockFocusController.cpp

@@ -248,6 +248,15 @@ void CDockFocusController::onFocusWindowChanged(QWindow *focusWindow)
 		return;
 	}
 
+#if defined(Q_OS_UNIX) && !defined(Q_OS_MACOS)
+    // bring the main application window that hosts the dock manager in front of
+    // any other application
+    d->DockManager->raise();
+
+    // ensure that the dragged floating window is in front of the main application window
+    focusWindow->raise();
+#endif
+
     auto vDockWidget = focusWindow->property(FocusedDockWidgetProperty);
 	if (!vDockWidget.isValid())
 	{

src/DockManager.cpp

@@ -1523,6 +1523,16 @@ QVariant CDockManager::configParam(eConfigParam Param, QVariant Default)
 }
 
 
+//===========================================================================
+void CDockManager::raise()
+{
+    if (parentWidget())
+    {
+        parentWidget()->raise();
+    }
+}
+
+
 } // namespace ads
 
 //---------------------------------------------------------------------------

src/DockManager.h

@@ -770,6 +770,12 @@ public Q_SLOTS:
      */
     void hideManagerAndFloatingWidgets();
 
+    /**
+     * Calls raise() for the widget that hosts this dock manager.
+     * This will bring the widget in front of any other application that is running
+     */
+    void raise();
+
 Q_SIGNALS:
 	/**
 	 * This signal is emitted if the list of perspectives changed.