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Lts/Viewer/SituationMap/MapObjectsImpl/map_object_indicator_impl.h

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+/**
+  * @RDE_HEADER@
+  * Interface-Implementation of MapObjectIndicator
+  * $Id$
+  * $HeadURL$
+  * $Author$
+  */
+
+#pragma once
+
+// Own
+#include "abstract_multi_point_map_object_impl.h"
+#include "basic_path_object_impl.h"
+#include <MapObjects/map_object_indicator.h> // Interface
+
+
+// Qt
+#include <QString>
+#include <QColor>
+#include <QPointF>
+#include <QSharedPointer>
+
+
+
+
+//----------------------------------------------------------------------------
+namespace SituationMap
+{
+
+// forward
+class GraphicalObjectPictureMarker;
+
+
+/**
+ * @brief The MapObjectIndicatorImpl can be used to ease the locating of an object.
+ * The MapObjectIndicatorImpl can by parametrized with just the UniqueMapId to point to.
+ * updateView() will do the rest for you:
+ * - retrieve the object to point to,
+ * - get the bounding box of that object and
+ * - create an indicator from the current center of the map to the object.
+ * \note <b> If the object to point to disappears, you are responsible for removing the MapObjectIndicatorImpl! </b>
+ *
+ * A class instance consists of the following logical elements:
+ * - mainGraphicalObject      (GraphicalObjectPath displaying the line with arrowhead)
+ * - m_pictureMarker of type GraphicalObjectPictureMarker / Image to show circle at the center of the map.
+ * - mainGraphicalObjectText  (displaying the text/name/identifier)
+ * - tacticalAppearance       (irrelevant)
+ */
+// inherent 'public', to get that implementation
+// inherent 'public virtual'  to get that interface
+class SITUATIONMAPOBJECTS_EXPORT MapObjectIndicatorImpl : public BasicPathObjectImpl, public virtual MapObjectIndicator
+{
+  using BaseClass = BasicPathObjectImpl;
+
+  template <typename> friend class GenericObjectFactory;
+protected:
+  explicit MapObjectIndicatorImpl(const QString &debugInfo = QString());
+  virtual ~MapObjectIndicatorImpl();
+
+public:
+  MapObjectIndicatorImpl(const MapObjectIndicatorImpl &other)     = delete;
+  MapObjectIndicatorImpl &operator=(MapObjectIndicatorImpl &other) = delete;
+
+
+  Point3D startPoint() const override;
+  Point3D endPoint() const override;
+
+  void setStartAndEndPoint(const Point3D &start, const Point3D &end) override;
+
+  UniqueMapId mapObjectToPointTo() override;
+  void setMapObjectToPointTo(UniqueMapId uniqueId) override;
+
+
+protected:
+  bool updateViewImpl() override;
+
+  friend class MapImpl;
+  bool init(MapImpl *mapImpl, const QString &logicalLayerName) override;
+
+  // internal/admin
+
+  // logical
+
+private:
+  bool setPositions(const PositionCont &) override; //SHOULD NEVER BE CALLED
+
+private:
+  UniqueMapId                                   m_uniqueIdToPointTo        = INVALID_MAP_ID;
+  QSharedPointer<GraphicalObjectPictureMarker>  m_pictureMarker;           // circle at the center of the map
+  int                                           m_pictureMarkerSize        = 20;
+  int                                           m_lineWidth                = 4;
+
+  QMetaObject::Connection                       m_extentChangedConnection;
+
+  LOGGER_T                                      m_logger;      ///< Interface of the Logging-Facility
+};
+
+
+
+} // namespace SituationMap
+