#ifndef GRAPHWIDGET_H
#define GRAPHWIDGET_H

#include <QtGui/QGraphicsView>

class Node;

class GraphWidget : public QGraphicsView
{
  Q_OBJECT

public:
  GraphWidget(QWidget *parent = 0);

  void itemMoved();

public slots:
  void shuffle();
  void zoomIn();
  void zoomOut();

protected:
  void keyPressEvent(QKeyEvent *event);
  void timerEvent(QTimerEvent *event);
  void wheelEvent(QWheelEvent *event);
  void drawBackground(QPainter *painter, const QRectF &rect);

  void scaleView(qreal scaleFactor);

private:
  int timerId;
  Node *centerNode;
};

#endif