Added the skeleton for the Ruler Item,

The ruler will deliver the Time and the Depth, later.
it should be vertical or horizontal, and will have
ticks

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>

qt-ui/diveplanner.cpp

@@ -189,3 +189,42 @@ void DivePlanner::mouseReleaseEvent(QMouseEvent* event)
 DiveHandler::DiveHandler(): QGraphicsEllipseItem(), from(0), to(0)
 {
 }
+
+void Ruler::setMaximum(double maximum)
+{
+	qDeleteAll(ticks);
+	max = maximum;
+	updateTicks();
+}
+
+void Ruler::setMinimum(double minimum)
+{
+	qDeleteAll(ticks);
+	min = minimum;
+	updateTicks();
+}
+
+Ruler::Ruler() : orientation(Qt::Horizontal)
+{
+}
+
+void Ruler::setOrientation(Qt::Orientation o)
+{
+	orientation = o;
+	updateTicks();
+}
+
+void Ruler::updateTicks()
+{
+
+}
+
+void Ruler::setLine(qreal x1, qreal y1, qreal x2, qreal y2)
+{
+
+}
+
+void Ruler::setTickInterval(double interval)
+{
+
+}

qt-ui/diveplanner.h

@@ -11,6 +11,27 @@ public:
 	QGraphicsLineItem *from;
 	QGraphicsLineItem *to;
 };
+
+class Ruler : public QGraphicsItem{
+public:
+    Ruler();
+	void setMinimum(double minimum);
+	void setMaximum(double maximum);
+	void setTickInterval(double interval);
+	void setOrientation(Qt::Orientation orientation);
+	void setLine(qreal x1, qreal y1, qreal x2, qreal y2);
+
+private:
+	void updateTicks();
+	Qt::Orientation orientation;
+	QList<QGraphicsLineItem*> ticks;
+	double min;
+	double max;
+
+	double posBegin;
+	double posEnd;
+};
+
 class DivePlanner : public QGraphicsView {
 	Q_OBJECT
 public: