kplview.h

/***************************************************************************
                          kplview.h  -  description
                             -------------------

    This file is a part of kpl - a program for graphical presentation of
    data sets and functions.

    begin                : Sat Apr 24 15:14:00 MEST 1999

    copyright            : (C) 2017 by Werner Stille
    email                : kpl@werner-stille.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef KPLVIEW_H
#define KPLVIEW_H

#include <QGraphicsView>
#include <QPoint>
#include <QUrl>

class QRectF;
class QRubberBand;

class Q_DECL_EXPORT KplView : public QGraphicsView
{
  Q_OBJECT
public:
  KplView(double f = 1, QWidget* parent = 0);
  virtual ~KplView();
  void setZoomFactor(double f);
  virtual QSize sizeHint() const;
  inline double zoomFactor() const { return m_zoomFactor; };

signals:
  void mouseLeaved();
  void urlsDropped(QList<QUrl>* list);
  void regionSelected(const QRectF& rect);

protected:
  virtual void dragEnterEvent(QDragEnterEvent* e);
  virtual void dragMoveEvent(QDragMoveEvent* e);
  virtual void dropEvent(QDropEvent* e);
  virtual void keyPressEvent(QKeyEvent* e);
  virtual void leaveEvent(QEvent* e);
  virtual void mouseMoveEvent(QMouseEvent* e);
  virtual void mousePressEvent(QMouseEvent* e);
  virtual void mouseReleaseEvent(QMouseEvent* e);
  double m_zoomFactor;
  QPoint startPos;
  QRubberBand* rubberBand;
};

#endif // KPLVIEW_H