File indexing completed on 2024-04-21 07:27:35

 /*
     PeriodicTableScene - Periodic Table Graphics Scene for Kalzium
 
     SPDX-FileCopyrightText: 2005-2006 Pino Toscano <toscano.pino@tiscali.it>
     SPDX-FileCopyrightText: 2003-2006 Carsten Niehaus <cniehaus@kde.org>
     SPDX-FileCopyrightText: 2007-2009 Marcus D. Hanwell <marcus@cryos.org>
     SPDX-FileCopyrightText: 2010 Etienne Rebetez <etienne.rebetez@oberwallis.ch>
 
     SPDX-License-Identifier: LGPL-2.1-or-later
 */
 
 #ifndef PERIODICTABLESCENE_H
 #define PERIODICTABLESCENE_H
 
 #include <QGraphicsScene>
 #include <QPointF>
 #include <QTimer>
 
 #include "elementitem.h"
 
 /**
  * @class PeriodicTableScene
  * @author Marcus D. Hanwell
  * @brief This class encapsulates the scene, all items are contained in it.
  *
  * This class implements a QGraphicsScene that holds all of the element items.
  * Any items owned by this class are automatically deleted by it.
  */
 class PeriodicTableScene : public QGraphicsScene
 {
     Q_OBJECT
 
 public:
     explicit PeriodicTableScene(QObject *parent = nullptr);
     ~PeriodicTableScene() override;
 
 Q_SIGNALS:
     /**
      * This signal is emitted when an element item is released.
      */
     void elementChanged(int element);
     /**
      * This signal is emitted when an element item is hovered.
      */
     void elementHovered(int element);
     /**
      * This signal is emitted when no element was clicked.
      */
     void freeSpaceClick();
 
 private Q_SLOTS:
     void slotMouseover();
 
 private:
     QTimer m_hoverTimer;
     int m_prevHoverElement;
     QPointF m_eventPos;
 
 protected:
     bool event(QEvent *e) override;
     void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
     void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
     void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;
 };
 
 #endif // PERIODICTABLESCENE_H