GraphicsProxyObject.hpp

#pragma once
#include <QGraphicsItem>
#include <QObject>
#include <QPainter>
class BaseGraphicsObject final
    : public QObject
    , public QGraphicsItem
{
public:
  BaseGraphicsObject(QGraphicsItem* parent = nullptr)
      : QGraphicsItem{parent}
  {
    this->setFlag(QGraphicsItem::ItemHasNoContents, true);
  }
 
  ~BaseGraphicsObject() override { }
 
  QRectF boundingRect() const override { return {}; }
 
  void paint(QPainter* painter, const QStyleOptionGraphicsItem* option, QWidget* widget)
      override
  {
  }
 
  void setSelectionArea(const QRectF&) { }
};