Added the Temperature Graph.

Added the Temperature Graph with its related classes. A Temperature Axis
is also created so the item is plotted on the right place.
Currently the Temperature Axis is just like the depth axis - top is
zero, wich means that the graph is inverted.

Also, the Temperature axis is being displayed as this helps debugging.

Signed-off-by: Tomaz Canabrava <tcanabrava@kde.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 10 insertions, 3 deletions

diff --git a/qt-ui/profile/divecartesianaxis.cpp b/qt-ui/profile/divecartesianaxis.cpp
index 08138408e..a7721561c 100644
--- a/qt-ui/profile/divecartesianaxis.cpp
+++ b/qt-ui/profile/divecartesianaxis.cpp
@@ -143,15 +143,16 @@ qreal DiveCartesianAxis::posAtValue(qreal value)
 	QPointF p = pos();
 
 	double size = max - min;
-	double percent = value / size;
+	double distanceFromOrigin = value - min;
+	double percent = (value - min) / size;
 	double realSize = orientation == Qt::Horizontal ?
 				m.x2() - m.x1() :
 				m.y2() - m.y1();
 	double retValue = realSize * percent;
-	retValue =  (orientation == Qt::Horizontal) ?
+	double adjusted =  (orientation == Qt::Horizontal) ?
 				retValue + m.x1() + p.x() :
 				retValue + m.y1() + p.y();
-	return retValue;
+	return adjusted;
 }
 
 qreal DiveCartesianAxis::percentAt(const QPointF& p)
@@ -192,6 +193,12 @@ QString TimeAxis::textForValue(double value)
 	return QString::number(value / 60);
 }
 
+QString TemperatureAxis::textForValue(double value)
+{
+    return QString::number(mkelvin_to_C( (int) value));
+}
+
+
 void DiveCartesianPlane::setLeftAxis(DiveCartesianAxis* axis)
 {
 	leftAxis = axis;