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