Feature to show or hide heart rate graph

Adds new push button "HR" to the button bar on the dive profile to
toggle display of heart rate.

TODO: New icon for the heart rate button is needed.

Fixes #485

Signed-off-by: Lakshman Anumolu <acrlakshman@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

3 files changed, 39 insertions, 5 deletions

diff --git a/qt-ui/profile/diveprofileitem.cpp b/qt-ui/profile/diveprofileitem.cpp
index 2ffc7ec02..51d6a3f79 100644
--- a/qt-ui/profile/diveprofileitem.cpp
+++ b/qt-ui/profile/diveprofileitem.cpp
@@ -221,6 +221,7 @@ DiveHeartrateItem::DiveHeartrateItem()
 	pen.setCosmetic(true);
 	pen.setWidth(1);
 	setPen(pen);
+	visible = true;
 }
 
 void DiveHeartrateItem::modelDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight)
@@ -297,6 +298,27 @@ void DiveHeartrateItem::paint(QPainter *painter, const QStyleOptionGraphicsItem
 	painter->drawPolyline(polygon());
 }
 
+void DiveHeartrateItem::preferencesChanged()
+{
+	QSettings s;
+	s.beginGroup("TecDetails");
+	setVisible(s.value(visibilityKey).toBool());
+	if (s.value(visibilityKey).toBool())
+		visible = true;
+	else
+		visible = false;
+}
+
+void DiveHeartrateItem::setVisibilitySettingsKey(const QString &key)
+{
+	visibilityKey = key;
+}
+
+bool DiveHeartrateItem::isVisible()
+{
+	return visible == true;
+}
+
 DiveTemperatureItem::DiveTemperatureItem()
 {
 	QPen pen;
diff --git a/qt-ui/profile/diveprofileitem.h b/qt-ui/profile/diveprofileitem.h
index 480776546..c7fa59841 100644
--- a/qt-ui/profile/diveprofileitem.h
+++ b/qt-ui/profile/diveprofileitem.h
@@ -100,9 +100,14 @@ public:
 	DiveHeartrateItem();
 	virtual void modelDataChanged(const QModelIndex &topLeft, const QModelIndex &bottomRight);
 	virtual void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget);
+	virtual void preferencesChanged();
+	void setVisibilitySettingsKey(const QString &setVisibilitySettingsKey);
+	bool isVisible();
 
 private:
 	void createTextItem(int seconds, int hr);
+	QString visibilityKey;
+	bool visible;
 };
 
 class DiveGasPressureItem : public AbstractProfilePolygonItem {
diff --git a/qt-ui/profile/profilewidget2.cpp b/qt-ui/profile/profilewidget2.cpp
index 047634e15..95f8f49ee 100644
--- a/qt-ui/profile/profilewidget2.cpp
+++ b/qt-ui/profile/profilewidget2.cpp
@@ -193,6 +193,8 @@ void ProfileWidget2::setupItemOnScene()
 	setupItem(gasPressureItem, timeAxis, cylinderPressureAxis, dataModel, DivePlotDataModel::TEMPERATURE, DivePlotDataModel::TIME, 1);
 	setupItem(temperatureItem, timeAxis, temperatureAxis, dataModel, DivePlotDataModel::TEMPERATURE, DivePlotDataModel::TIME, 1);
 	setupItem(heartBeatItem, timeAxis, heartBeatAxis, dataModel, DivePlotDataModel::HEARTBEAT, DivePlotDataModel::TIME, 1);
+	heartBeatItem->setVisibilitySettingsKey("hrgraph");
+	heartBeatItem->preferencesChanged();
 	setupItem(diveProfileItem, timeAxis, profileYAxis, dataModel, DivePlotDataModel::DEPTH, DivePlotDataModel::TIME, 0);
 
 #define CREATE_PP_GAS(ITEM, VERTICAL_COLUMN, COLOR, COLOR_ALERT, THRESHOULD_SETTINGS, VISIBILITY_SETTINGS)              \
@@ -400,11 +402,15 @@ void ProfileWidget2::plotDives(QList<dive *> dives)
 	temperatureAxis->setMinimum(pInfo.mintemp);
 	temperatureAxis->setMaximum(pInfo.maxtemp);
 
-	if (pInfo.maxhr) {
-		heartBeatAxis->setMinimum(pInfo.minhr);
-		heartBeatAxis->setMaximum(pInfo.maxhr);
-		heartBeatAxis->updateTicks(); // this shows the ticks
-		heartBeatAxis->setVisible(true);
+	if (heartBeatItem->isVisible()) {
+		if (pInfo.maxhr) {
+			heartBeatAxis->setMinimum(pInfo.minhr);
+			heartBeatAxis->setMaximum(pInfo.maxhr);
+			heartBeatAxis->updateTicks(); // this shows the ticks
+			heartBeatAxis->setVisible(true);
+		} else {
+			heartBeatAxis->setVisible(false);
+		}
 	} else {
 		heartBeatAxis->setVisible(false);
 	}
@@ -656,6 +662,7 @@ void ProfileWidget2::setProfileState()
 	temperatureAxis->setPos(itemPos.temperature.pos.on);
 	heartBeatAxis->setPos(itemPos.heartBeat.pos.on);
 	heartBeatAxis->setLine(itemPos.heartBeat.expanded);
+	heartBeatItem->setVisible(s.value("hrgraph").toBool());
 	meanDepth->setVisible(true);
 
 	diveComputerText->setVisible(true);