Fixed track tooltip area handling

Added some more waypoint info to waypoint tooltips.
Refactoring & optimization.

src/trackitem.h

@@ -0,0 +1,32 @@
+#ifndef TRACKITEM_H
+#define TRACKITEM_H
+
+#include <QGraphicsPathItem>
+#include <QDateTime>
+#include "units.h"
+#include "track.h"
+
+class TrackItem : public QGraphicsPathItem
+{
+public:
+	TrackItem(const Track &track);
+
+	QPainterPath shape() const {return _shape;}
+	void setScale(qreal scale);
+
+	void setUnits(enum Units units);
+	void setColor(const QColor &color);
+
+private:
+	void updateShape();
+	QString toolTip();
+
+	QPainterPath _shape;
+
+	Units _units;
+	QDateTime _date;
+	qreal _time;
+	qreal _distance;
+};
+
+#endif // TRACKITEM_H