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) 2024 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 = nullptr);
  virtual ~KplView();
  void setZoomFactor(double f);
  virtual QSize sizeHint() const override;
  inline double zoomFactor() const { return m_zoomFactor; };
 
Q_SIGNALS:
  void mouseLeaved();
  void urlsDropped(QList<QUrl>* list);
  void regionSelected(const QRectF& rect);
 
protected:
  virtual void dragEnterEvent(QDragEnterEvent* e) override;
  virtual void dragMoveEvent(QDragMoveEvent* e) override;
  virtual void dropEvent(QDropEvent* e) override;
  virtual void keyPressEvent(QKeyEvent* e) override;
  virtual void leaveEvent(QEvent* e) override;
  virtual void mouseMoveEvent(QMouseEvent* e) override;
  virtual void mousePressEvent(QMouseEvent* e) override;
  virtual void mouseReleaseEvent(QMouseEvent* e) override;
  double m_zoomFactor;
  QPoint startPos;
  QRubberBand* rubberBand;
};
 
#endif // KPLVIEW_H