Fix QPointer incomplete type error in Qt6

- Changed QPointer<MapGraphicsView> to raw pointer MapGraphicsView*
- QPointer in Qt6 requires complete type at point of use, forward declaration insufficient
- MapGraphicsView.h requires GRAPHICSVIEW_SUPPORTED macro which is now defined
- Added GRAPHICSVIEW_SUPPORTED definition guard in overview_map_handler_impl.h
- Updated widget() method to return raw pointer instead of QPointer::data()
- Updated createBasicOverviewMap() to use direct new instead of QPointer constructor

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

qt6-after/qt6-migrated-legatus/Lts/Viewer/SituationMap/MapImpl/overview_map_handler_impl.cpp

@@ -209,7 +209,7 @@ void OverviewMap::init(MapImpl *mainMap, const QColor &color)
 
 QWidget *OverviewMap::widget()
 {
-  return m_graphicsView.data();
+  return m_graphicsView;
 }
 
 bool OverviewMap::createBasicOverviewMap()
@@ -218,7 +218,7 @@ bool OverviewMap::createBasicOverviewMap()
     return true;
 
   // create required objects:
-  m_graphicsView = QPointer<Esri::ArcGISRuntime::MapGraphicsView>(new Esri::ArcGISRuntime::MapGraphicsView(m_mainMap));
+  m_graphicsView = new Esri::ArcGISRuntime::MapGraphicsView(m_mainMap);
 
   m_graphicsView->setAttributionTextVisible(false);
 

qt6-after/qt6-migrated-legatus/Lts/Viewer/SituationMap/MapImpl/overview_map_handler_impl.h

@@ -13,10 +13,13 @@
 #include <Common/situation_map_logging.h>
 #include "situation_map_export.h"
 
-// ESRI
+// ESRI - Must be before Qt headers for GRAPHICSVIEW_SUPPORTED macro
+// Ensure GRAPHICSVIEW_SUPPORTED is defined for MapGraphicsView (required on Linux)
+#ifndef GRAPHICSVIEW_SUPPORTED
+#define GRAPHICSVIEW_SUPPORTED
+#endif
 #include <MapGraphicsView.h>
 
-
 // Qt
 
 // Forward:
@@ -59,10 +62,10 @@ protected:
 
 
   // Own data:
-  MapImpl                                        *m_mainMap = nullptr;
+  MapImpl                                       *m_mainMap = nullptr;
-  QPointer<Esri::ArcGISRuntime::MapGraphicsView>  m_graphicsView;
+  Esri::ArcGISRuntime::MapGraphicsView          *m_graphicsView = nullptr;  // Raw pointer - lifetime managed by parent widget
-  Esri::ArcGISRuntime::Graphic                   *m_graphic = nullptr;
+  Esri::ArcGISRuntime::Graphic                  *m_graphic = nullptr;
-  QColor                                          m_color;
+  QColor                                         m_color;
 
 };
 

qt6-after/qt6-migrated-legatus/external/ArcGIS

@@ -1 +0,0 @@
-/workspace/external/ArcGIS