Merge branch 'linux_modal_dialog_fix'

Author: Uwe

src/DockFocusController.cpp

@@ -264,7 +264,7 @@ void CDockFocusController::onFocusWindowChanged(QWindow *focusWindow)
 //===========================================================================
 void CDockFocusController::onApplicationFocusChanged(QWidget* focusedOld, QWidget* focusedNow)
 {
-	Q_UNUSED(focusedOld);
+    Q_UNUSED(focusedOld);
 
 	if (d->DockManager->isRestoringState())
 	{

src/DockManager.cpp

@@ -45,6 +45,7 @@
 #include <QSettings>
 #include <QMenu>
 #include <QApplication>
+#include <QWindow>
 
 #include "FloatingDockContainer.h"
 #include "DockOverlay.h"
@@ -500,6 +501,16 @@ CDockManager::CDockManager(QWidget *parent) :
 
 #ifdef Q_OS_LINUX
 	window()->installEventFilter(this);
+
+    connect(qApp, &QApplication::focusWindowChanged, [](QWindow* focusWindow)
+    {
+        // bring modal dialogs to foreground to ensure that they are in front of any
+        // floating dock widget
+        if (focusWindow && focusWindow->isModal())
+        {
+            focusWindow->raise();
+        }
+    });
 #endif
 }
 

src/FloatingDockContainer.cpp

@@ -515,6 +515,13 @@ void FloatingDockContainerPrivate::updateDropOverlays(const QPoint &GlobalPos)
 		return;
 	}
 
+#ifdef Q_OS_LINUX
+    if (qApp->activeModalWidget())
+    {
+        return;
+    }
+#endif
+
 	auto Containers = DockManager->dockContainers();
 	CDockContainerWidget *TopContainer = nullptr;
 	for (auto ContainerWidget : Containers)