ddtGraphicalElement.hpp

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#ifndef DDT_DATAVISUALISATION_DDTGRAPHCIS_GRAPHICALELEMENT_HPP
#define DDT_DATAVISUALISATION_DDTGRAPHCIS_GRAPHICALELEMENT_HPP
 
#include <math.h>
#include <QGraphicsObject>
#include <QGraphicsSceneHoverEvent>
#include <QGraphicsSceneMouseEvent>
#include <QPainter>
 
#include "ddt/ddtPointGrabber.hpp"
#include "ddt/ddtGraphicalElementProperties.hpp"
 
/*
 * Overlay type enumerator
 */
enum DdtOverlayType {
  DDT_OVERLAY_ALL = 0,
  DDT_OVERLAY_ELLIPSE,
  DDT_OVERLAY_RECTANGLE,
  DDT_OVERLAY_CROSS,
  DDT_OVERLAY_TEXT,
  DDT_OVERLAY_LINE,
  DDT_OVERLAY_SLIT,
  DDT_OVERLAY_REF_LINE,
  DDT_OVERLAY_STAT_RECTANGLE,
  DDT_OVERLAY_COMPASS,
  DDT_OVERLAY_IMAGE,
  DDT_OVERLAY_PICK_MARKER
};
 
class DdtGraphicalElement : public QGraphicsItem {
 public:
  explicit DdtGraphicalElement(
      DdtGraphicalElementProperties const &element_properties,
      const QString obj_name = "", const QString elem_name = "");
 
  virtual ~DdtGraphicalElement();
 
  virtual void DrawElement(QPainter *painter) = 0;
 
  virtual QRectF boundingRect() const override;
 
  virtual QRectF RotateBoundingBox(QRectF const &original_bounding_box) const;
 
  void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
             QWidget *widget) override;
 
  void DrawBoundingBox(QPainter *painter) const;
 
  void EditElementProperties(const DdtGraphicalElementProperties& properties);
 
  virtual void HighlightSelectedElement(QPainter *painter) const;
 
  virtual bool IsHidden();
 
  virtual float ScaleThreshold();
 
  virtual void SetShowFlag(bool show);
 
  virtual DdtOverlayType GetType();
 
  virtual QString GetTypeString();
 
  virtual QString GetTag();
 
  virtual void SetTransform(QTransform const &transform);
 
  void SetIsEditable(const bool editable);
 
  void SetItemIsSelected(const bool is_selected);
 
  void SetIsHovering(const bool item_is_hovering);
 
  bool GetIsEditable() const;
 
  bool GetItemIsSelected() const;
 
  QString GetObjectName() const;
 
  QString GetElementName() const;
 
  bool GetIsHovering() const;
 
  const DdtGraphicalElementProperties& GetElementProperties();
 
  const int LIGHTER_FACTOR = 200;
 
  const int SCALE_DIFFERENCE_FACTOR = 20;
 
 protected:
  void mouseMoveEvent(QGraphicsSceneMouseEvent *const event) override;
  void mousePressEvent(QGraphicsSceneMouseEvent *const event) override;
  bool HandleEvent(PointGrabber *const corner, QEvent *const event) const;
 
  DdtGraphicalElementProperties element_properties;
 
  DdtOverlayType element_type;
 
  QPointF location;
 
  QPointF drag_start;
 
  qreal corner_size;
 
  bool is_hovering;
 
  /*
   * Name of the overlay object this element belongs to.
   */
  QString object_name;
 
  QString element_name;
 
 private:
  void Initialize();
 
  bool item_is_selected;
  bool is_editable;
};
 
#endif  // DDT_DATAVISUALISATION_DDTGRAPHCIS_GRAPHICALELEMENT_HPP