ElementItem: public QGraphicsItem¶
ElementItem(int elementNumber = 0)¶
Constructor. Should be called with the element number for this item. The constructor uses setData to set the element number using the key 0. This is then used by PeriodicTable to figure out which element was clicked on.
boundingRect() const override¶
the bounding rectangle of the element item.
shape() const override¶
the painter path which is also a rectangle in this case.
paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override¶
This is where most of the action takes place. The element box is drawn along with its symbol.