*/
void set_colour(QColor colour);
+ /**
+ * Computes the outline rectangle of the viewport hit-box.
+ * @param rect the rectangle of the viewport area.
+ * @return Returns the rectangle of the hit-box.
+ */
+ QRectF hit_box_rect(const QRectF &rect) const;
+
/**
* Paints the signal label.
* @param p the QPainter to paint into.