Fix display problems on Linux

ApplicationCode/ProjectDataModel/Rim3dView.cpp

@@ -143,6 +143,7 @@ Rim3dView::Rim3dView(void)
 //--------------------------------------------------------------------------------------------------
 Rim3dView::~Rim3dView(void)
 {
+    m_viewer->clearRimView();
     removeMdiWindowFromMdiArea();
 
     deleteViewWidget();

ApplicationCode/UserInterface/RiuMainWindow.cpp

@@ -1078,7 +1078,7 @@ void RiuMainWindow::removeViewer(QWidget* viewer)
 //--------------------------------------------------------------------------------------------------
 void RiuMainWindow::addViewer(QWidget* viewer, const RimMdiWindowGeometry& windowsGeometry)
 {
-    RiuMdiSubWindow* subWin = new RiuMdiSubWindow(m_mdiArea);
+    RiuMdiSubWindow* subWin = new RiuMdiSubWindow;
     subWin->setAttribute(Qt::WA_DeleteOnClose); // Make sure the contained widget is destroyed when the MDI window is closed
     subWin->setWidget(viewer);
 
@@ -1109,6 +1109,8 @@ void RiuMainWindow::addViewer(QWidget* viewer, const RimMdiWindowGeometry& windo
         initialStateMaximized = true;
     }
 
+    m_mdiArea->addSubWindow(subWin);
+
     if (subWindowPos.x() > -1)
     {
         subWin->move(subWindowPos);
@@ -1119,6 +1121,10 @@ void RiuMainWindow::addViewer(QWidget* viewer, const RimMdiWindowGeometry& windo
     {
         subWin->showMaximized();
     }
+    else
+    {
+        subWin->showNormal();
+    }
 
     slotRefreshViewActions();
 }

ApplicationCode/UserInterface/RiuViewer.cpp

@@ -214,6 +214,14 @@ RiuViewer::~RiuViewer()
 }
 
 
+//--------------------------------------------------------------------------------------------------
+///
+//--------------------------------------------------------------------------------------------------
+void RiuViewer::clearRimView()
+{
+    m_rimView = nullptr;
+}
+
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------

ApplicationCode/UserInterface/RiuViewer.h

@@ -70,7 +70,7 @@ class RiuViewer : public caf::Viewer, public RiuInterfaceToViewWindow
 public:
     RiuViewer(const QGLFormat& format, QWidget* parent);
     ~RiuViewer() override;
-
+    void            clearRimView();
     void            setDefaultView();
     cvf::Vec3d      pointOfInterest();
     void            setPointOfInterest(cvf::Vec3d poi);