Trigger MarbleQuickItem::headingChanged() if the heading is changed via

RMB-rotation.

src/lib/marble/declarative/MarbleQuickItem.cpp

@@ -256,6 +256,7 @@ namespace Marble
         connect(&d->m_map, &MarbleMap::radiusChanged, this, &MarbleQuickItem::zoomChanged);
         connect(&d->m_reverseGeocoding, SIGNAL(reverseGeocodingFinished(GeoDataCoordinates,GeoDataPlacemark)),
                 this, SLOT(handleReverseGeocoding(GeoDataCoordinates,GeoDataPlacemark)));
+        connect(&d->m_map, &MarbleMap::visibleLatLonAltBoxChanged, this, &MarbleQuickItem::handleVisibleLatLonAltBoxChanged);
 
         setAcceptedMouseButtons(Qt::AllButtons);
         installEventFilter(&d->m_inputHandler);
@@ -340,6 +341,16 @@ namespace Marble
         }
     }
 
+    void MarbleQuickItem::handleVisibleLatLonAltBoxChanged(const GeoDataLatLonAltBox &latLonAltBox)
+    {
+        Q_UNUSED(latLonAltBox)
+
+        if (d->m_heading != d->m_map.heading()) {
+            d->m_heading = d->m_map.heading();
+            emit headingChanged(d->m_heading);
+        }
+    }
+
     void MarbleQuickItem::paint(QPainter *painter)
     {   //TODO - much to be done here still, i.e paint !enabled version
         QPaintDevice *paintDevice = painter->device();

src/lib/marble/declarative/MarbleQuickItem.h

@@ -286,6 +286,7 @@ namespace Marble
         void updateCurrentPosition(const GeoDataCoordinates & coordinates);
         void updatePlacemarks();
         void handleReverseGeocoding(const GeoDataCoordinates &coordinates, const GeoDataPlacemark &placemark);
+        void handleVisibleLatLonAltBoxChanged(const GeoDataLatLonAltBox& latLonAltBox);
 
     private:
         using MarbleQuickItemPrivatePtr = QSharedPointer<MarbleQuickItemPrivate>;