GraphicsPointPolygon.h

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/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#ifndef GRAPHICS_POINT_POLYGON_H
#define GRAPHICS_POINT_POLYGON_H
 
#include <QGraphicsPolygonItem>
#include <QObject>
#include <QPointF>
 
class GraphicsPoint;

class GraphicsPointPolygon : public QObject, public QGraphicsPolygonItem
{
  Q_OBJECT;
 
public:
  GraphicsPointPolygon(GraphicsPoint &graphicsPoint,
                       const QPolygonF &polygon);

  QVariant itemChange(GraphicsItemChange change, const QVariant &value);

  virtual void hoverEnterEvent(QGraphicsSceneHoverEvent *event);

  virtual void hoverLeaveEvent(QGraphicsSceneHoverEvent *event);

  void setRadius(int radius);

  void setShadow (GraphicsPointPolygon *shadow);
 
signals:

  void signalPointHoverEnter (QString);

  void signalPointHoverLeave (QString);
 
private:
  GraphicsPointPolygon();
 
  void setOpacityForSubtree (double opacity);
 
  // Reference to the GraphicsPoint that this class belongs to
  GraphicsPoint &m_graphicsPoint;
 
  GraphicsPointPolygon *m_shadow;
};
 
#endif // GRAPHICS_POINT_POLYGON_H