Fixed some corner case min/max graph values issue

src/GUI/cadencegraphitem.cpp

@@ -7,9 +7,14 @@ CadenceGraphItem::CadenceGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
 	qreal sum = 0;
+	_max = graph.first().y();
 
-	for (int j = 1; j < graph.size(); j++)
-		sum += graph.at(j).y() * (graph.at(j).s() - graph.at(j-1).s());
+	for (int i = 1; i < graph.size(); i++) {
+		qreal y = graph.at(i).y();
+		sum += y * (graph.at(i).s() - graph.at(i-1).s());
+		if (y > _max)
+			_max = y;
+	}
 	_avg = sum/graph.last().s();
 
 	setToolTip(toolTip());

src/GUI/cadencegraphitem.h

@@ -11,13 +11,13 @@ public:
 	CadenceGraphItem(const Graph &graph, GraphType type,
 	  QGraphicsItem *parent = 0);
 
-	qreal max() const {return -bounds().top();}
+	qreal max() const {return _max;}
 	qreal avg() const {return _avg;}
 
 private:
 	QString toolTip() const;
 
-	qreal _avg;
+	qreal _avg, _max;
 };
 
 #endif // CADENCEGRAPHITEM_H

src/GUI/elevationgraphitem.cpp

@@ -7,6 +7,7 @@ ElevationGraphItem::ElevationGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
 	_ascent = _descent = 0;
+	_min = _max = graph.first().y();
 
 	for (int j = 1; j < graph.size(); j++) {
 		qreal cur = graph.at(j).y();
@@ -16,6 +17,11 @@ ElevationGraphItem::ElevationGraphItem(const Graph &graph, GraphType type,
 			_ascent += cur - prev;
 		if (cur < prev)
 			_descent += prev - cur;
+
+		if (cur < _min)
+			_min = cur;
+		if (cur > _max)
+			_max = cur;
 	}
 
 	setToolTip(toolTip(Metric));

src/GUI/elevationgraphitem.h

@@ -13,15 +13,15 @@ public:
 
 	qreal ascent() const {return _ascent;}
 	qreal descent() const {return _descent;}
-	qreal min() const {return -bounds().bottom();}
-	qreal max() const {return -bounds().top();}
+	qreal min() const {return _min;}
+	qreal max() const {return _max;}
 
 	void setUnits(Units units);
 
 private:
 	QString toolTip(Units units) const;
 
-	qreal _ascent, _descent;
+	qreal _ascent, _descent, _min, _max;
 };
 
 #endif // ELEVATIONGRAPHITEM_H

src/GUI/gearratiographitem.cpp

@@ -8,11 +8,18 @@ GearRatioGraphItem::GearRatioGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent), _top(NAN)
 {
 	qreal val = NAN;
+	_min = _max = graph.first().y();
+
+	for (int i = 1; i < graph.size(); i++) {
+		const GraphPoint &p = graph.at(i);
 
-	for (int j = 1; j < graph.size(); j++) {
-		const GraphPoint &p = graph.at(j);
 		qreal val = _map.value(p.y());
-		_map.insert(p.y(), val + (p.s() - graph.at(j-1).s()));
+		_map.insert(p.y(), val + (p.s() - graph.at(i-1).s()));
+
+		if (p.y() < _min)
+			_min = p.y();
+		if (p.y() > _max)
+			_max = p.y();
 	}
 
 	for (QMap<qreal, qreal>::const_iterator it = _map.constBegin();

src/GUI/gearratiographitem.h

@@ -12,8 +12,8 @@ public:
 	GearRatioGraphItem(const Graph &graph, GraphType type,
 	  QGraphicsItem *parent = 0);
 
-	qreal min() const {return -bounds().bottom();}
-	qreal max() const {return -bounds().top();}
+	qreal min() const {return _min;}
+	qreal max() const {return _max;}
 	qreal top() const {return _top;}
 
 	const QMap<qreal, qreal> &map() const {return _map;}
@@ -22,7 +22,7 @@ private:
 	QString toolTip() const;
 
 	QMap<qreal, qreal> _map;
-	qreal _top;
+	qreal _top, _min, _max;
 };
 
 #endif // GEARRATIOGRAPHITEM_H

src/GUI/heartrategraphitem.cpp

@@ -7,9 +7,14 @@ HeartRateGraphItem::HeartRateGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
 	qreal sum = 0;
+	_max = graph.first().y();
 
-	for (int j = 1; j < graph.size(); j++)
-		sum += graph.at(j).y() * (graph.at(j).s() - graph.at(j-1).s());
+	for (int i = 1; i < graph.size(); i++) {
+		qreal y = graph.at(i).y();
+		sum += y * (graph.at(i).s() - graph.at(i-1).s());
+		if (y > _max)
+			_max = y;
+	}
 	_avg = sum/graph.last().s();
 
 	setToolTip(toolTip());

src/GUI/heartrategraphitem.h

@@ -11,13 +11,13 @@ public:
 	HeartRateGraphItem(const Graph &graph, GraphType type,
 	  QGraphicsItem *parent = 0);
 
-	qreal max() const {return -bounds().top();}
+	qreal max() const {return _max;}
 	qreal avg() const {return _avg;}
 
 private:
 	QString toolTip() const;
 
-	qreal _avg;
+	qreal _avg, _max;
 };
 
 #endif // HEARTRATEGRAPHITEM_H

src/GUI/powergraphitem.cpp

@@ -7,9 +7,14 @@ PowerGraphItem::PowerGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
 	qreal sum = 0;
+	_max = graph.first().y();
 
-	for (int j = 1; j < graph.size(); j++)
-		sum += graph.at(j).y() * (graph.at(j).s() - graph.at(j-1).s());
+	for (int i = 1; i < graph.size(); i++) {
+		qreal y = graph.at(i).y();
+		sum += y * (graph.at(i).s() - graph.at(i-1).s());
+		if (y > _max)
+			_max = y;
+	}
 	_avg = sum/graph.last().s();
 
 	setToolTip(toolTip());

src/GUI/powergraphitem.h

@@ -11,13 +11,13 @@ public:
 	PowerGraphItem(const Graph &graph, GraphType type,
 	  QGraphicsItem *parent = 0);
 
-	qreal max() const {return -bounds().top();}
+	qreal max() const {return _max;}
 	qreal avg() const {return _avg;}
 
 private:
 	QString toolTip() const;
 
-	qreal _avg;
+	qreal _avg, _max;
 };
 
 #endif // POWERGRAPHITEM_H

src/GUI/speedgraphitem.cpp

@@ -13,6 +13,13 @@ SpeedGraphItem::SpeedGraphItem(const Graph &graph, GraphType type,
 	_avg = graph.last().s() / graph.last().t();
 	_mavg = graph.last().s() / movingTime;
 
+	_max = graph.first().y();
+	for (int i = 1; i < graph.size(); i++) {
+		qreal y = graph.at(i).y();
+		if (y > _max)
+			_max = y;
+	}
+
 	setToolTip(toolTip());
 }
 

src/GUI/speedgraphitem.h

@@ -12,7 +12,7 @@ public:
 	SpeedGraphItem(const Graph &graph, GraphType type, qreal movingTime,
 	  QGraphicsItem *parent = 0);
 
-	qreal max() const {return -bounds().top();}
+	qreal max() const {return _max;}
 	qreal avg() const {return _avg;}
 	qreal mavg() const {return _mavg;}
 
@@ -22,7 +22,7 @@ public:
 private:
 	QString toolTip() const;
 
-	qreal _avg, _mavg;
+	qreal _avg, _mavg, _max;
 
 	Units _units;
 	TimeType _timeType;

src/GUI/temperaturegraphitem.cpp

@@ -7,9 +7,18 @@ TemperatureGraphItem::TemperatureGraphItem(const Graph &graph, GraphType type,
   QGraphicsItem *parent) : GraphItem(graph, type, parent)
 {
 	qreal sum = 0;
+	_min = _max = graph.first().y();
+
+	for (int j = 1; j < graph.size(); j++) {
+		qreal y = graph.at(j).y();
 
-	for (int j = 1; j < graph.size(); j++)
 		sum += graph.at(j).y() * (graph.at(j).s() - graph.at(j-1).s());
+
+		if (y > _max)
+			_max = y;
+		if (y < _min)
+			_min = y;
+	}
 	_avg = sum/graph.last().s();
 
 	setToolTip(toolTip(Metric));

src/GUI/temperaturegraphitem.h

@@ -11,8 +11,8 @@ public:
 	TemperatureGraphItem(const Graph &graph, GraphType type,
 	  QGraphicsItem *parent = 0);
 
-	qreal max() const {return -bounds().top();}
-	qreal min() const {return -bounds().bottom();}
+	qreal max() const {return _max;}
+	qreal min() const {return _min;}
 	qreal avg() const {return _avg;}
 
 	void setUnits(Units units);
@@ -20,7 +20,7 @@ public:
 private:
 	QString toolTip(Units units) const;
 
-	qreal _avg;
+	qreal _avg, _min, _max;
 };
 
 #endif // TEMPERATUREGRAPHITEM_H