File indexing completed on 2022-11-29 12:50:42

0001 /*
0002     ElementItem - Element Item, part of the Periodic Table Graphics View for
0003     Kalzium
0004 
0005     SPDX-FileCopyrightText: 2007-2009 Marcus D. Hanwell <marcus@cryos.org>
0006     SPDX-FileCopyrightText: 2010 Etienne Rebetez <etienne.rebetez@oberwallis.ch>
0007 
0008     This file is part of the Avogadro molecular editor project.
0009     For more information, see <https://avogadro.cc/>
0010 
0011     SPDX-License-Identifier: LGPL-2.1-or-later
0012 */
0013 
0014 #ifndef ELEMENTITEM_H
0015 #define ELEMENTITEM_H
0016 
0017 #include <QGraphicsItem>
0018 
0019 #include "kalziumdataobject.h"
0020 #include "kalziumelementproperty.h"
0021 #include <chemicaldataobject.h>
0022 
0023 /**
0024  * @class ElementItem
0025  * @author Marcus D. Hanwell, Etienne Rebetez
0026  * @brief An element item, intended to display a single element.
0027  *
0028  * This class implements a QGraphicsItem for displaying single elements in a
0029  * perdiodic table. It currently allows the setting of the proton number.
0030  * All other information come frome the kalziumElementProperty class.
0031  */
0032 class ElementItem : public QGraphicsObject
0033 {
0034     Q_OBJECT
0035 
0036 public:
0037     /**
0038      * Constructor. Should be called with the element number for this item. The
0039      * constructor uses setData to set the element number using the key 0. This
0040      * is then used by PeriodicTable to figure out which element was clicked on.
0041      */
0042     explicit ElementItem(KalziumElementProperty *property, int elementNumber = 0);
0043 
0044     /**
0045      * Destructor.
0046      */
0047     ~ElementItem() override;
0048 
0049     /**
0050      * @return the bounding rectangle of the element item.
0051      */
0052     QRectF boundingRect() const override;
0053 
0054     /**
0055      * @return the painter path which is also a rectangle in this case.
0056      */
0057     QPainterPath shape() const override;
0058 
0059     /**
0060      * This is where most of the action takes place. The element box is drawn
0061      * along with its symbol.
0062      */
0063     void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
0064 
0065 public Q_SLOTS:
0066     void redraw();
0067 
0068 private:
0069     QString getCurrentElementValue();
0070 
0071     /**
0072      * Width of the elements.
0073      */
0074     int m_width;
0075 
0076     /**
0077      * Height of the elements.
0078      */
0079     int m_height;
0080 
0081     /**
0082      * The proton number of the item - all other attributes are derived from this.
0083      */
0084     int m_element;
0085 
0086     /**
0087      * The element numbers symbol.
0088      */
0089     QString m_symbol;
0090 
0091     /**
0092      * The color of the element which will also be used as the background color
0093      * for the item box.
0094      */
0095     QBrush m_brush;
0096 
0097     QColor m_textColor;
0098 
0099     QColor m_borderColor;
0100 
0101     QString m_textValue;
0102 
0103     KalziumElementProperty *m_property;
0104 
0105 protected:
0106     void hoverEnterEvent(QGraphicsSceneHoverEvent *event) override;
0107     void hoverLeaveEvent(QGraphicsSceneHoverEvent *event) override;
0108 };
0109 
0110 #endif // ELEMENTITEM_H