*/
virtual QPoint point() const = 0;
+public:
+ /**
+ * Gets the text colour.
+ * @remarks This colour is computed by comparing the lightness
+ * of the trace colour against a threshold to determine whether
+ * white or black would be more visible.
+ */
+ static QColor select_text_colour(QColor background);
+
public:
virtual QMenu* create_context_menu(QWidget *parent);