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>

pref.h

@@ -42,6 +42,7 @@ struct preferences {
 	bool display_unused_tanks;
 	bool show_average_depth;
 	bool zoomed_plot;
+	short heart_rate;
 };
 enum unit_system_values {
 	METRIC,

profile.c

@@ -1321,7 +1321,7 @@ static void plot_string(struct plot_info *pi, struct plot_data *entry, struct me
 			}
 		}
 	}
-	if (entry->heartbeat)
+	if (entry->heartbeat && prefs.heart_rate)
 		put_format(b, translate("gettextFromC", "heartbeat: %d\n"), entry->heartbeat);
 	if (entry->bearing)
 		put_format(b, translate("gettextFromC", "bearing: %d\n"), entry->bearing);

qt-ui/mainwindow.cpp

@@ -221,6 +221,7 @@ void MainWindow::setToolButtonsEnabled(bool enabled)
 	ui.profSAC->setEnabled(enabled);
 	ui.profRuler->setEnabled(enabled);
 	ui.profScaled->setEnabled(enabled);
+	ui.profHR->setEnabled(enabled);
 }
 
 void MainWindow::on_actionClose_triggered()
@@ -702,6 +703,7 @@ void MainWindow::readSettings()
 	TOOLBOX_PREF_BUTTON(pp_graphs.phe, phegraph, profPhe);
 	TOOLBOX_PREF_BUTTON(pp_graphs.pn2, pn2graph, profPn2);
 	TOOLBOX_PREF_BUTTON(pp_graphs.po2, po2graph, profPO2);
+	TOOLBOX_PREF_BUTTON(heart_rate, hrgraph, profHR);
 	ui.profRuler->setChecked(s.value("rulergraph").toBool());
 	TOOLBOX_PREF_BUTTON(show_sac, show_sac, profSAC);
 }
@@ -1164,6 +1166,11 @@ void MainWindow::on_profPO2_clicked(bool triggered)
 	prefs.pp_graphs.po2 = triggered;
 	TOOLBOX_PREF_PROFILE(po2graph);
 }
+void MainWindow::on_profHR_clicked(bool triggered)
+{
+	prefs.heart_rate = triggered;
+	TOOLBOX_PREF_PROFILE(hrgraph);
+}
 void MainWindow::on_profRuler_clicked(bool triggered)
 {
 	TOOLBOX_PREF_PROFILE(rulergraph);

qt-ui/mainwindow.h

@@ -140,6 +140,7 @@ slots:
 	void on_profPO2_clicked(bool triggered);
 	void on_profPhe_clicked(bool triggered);
 	void on_profPn2_clicked(bool triggered);
+	void on_profHR_clicked(bool triggered);
 	void on_profRuler_clicked(bool triggered);
 	void on_profSAC_clicked(bool triggered);
 	void on_profScaled_clicked(bool triggered);

qt-ui/mainwindow.ui

@@ -449,11 +449,27 @@
              <bool>true</bool>
             </property>
            </widget>
-          </item>
+	  </item>
-          <item row="0" column="1" rowspan="14">
+	  <item row="13" column="0">
+	   <widget class="QToolButton" name="profHR">
+	    <property name="toolTip">
+	     <string>Show/hide heart rate</string>
+	    </property>
+	    <property name="text">
+	     <string>HR</string>
+	    </property>
+	    <property name="checkable">
+	     <bool>true</bool>
+	    </property>
+	    <property name="autoRaise">
+	     <bool>true</bool>
+	    </property>
+	   </widget>
+	  </item>
+          <item row="0" column="1" rowspan="15">
            <widget class="ProfileWidget2" name="newProfile"/>
           </item>
-          <item row="13" column="0">
+          <item row="14" column="0">
            <spacer name="verticalSpacer">
             <property name="orientation">
              <enum>Qt::Vertical</enum>

qt-ui/preferences.cpp

@@ -268,6 +268,7 @@ void PreferencesDialog::loadSettings()
 	GET_BOOL("calcceiling3m", calc_ceiling_3m_incr);
 	GET_BOOL("calcndltts", calc_ndl_tts);
 	GET_BOOL("calcalltissues", calc_all_tissues);
+	GET_BOOL("hrgraph", heart_rate);
 	GET_INT("gflow", gflow);
 	GET_INT("gfhigh", gfhigh);
 	GET_BOOL("gf_low_at_maxdepth", gf_low_at_maxdepth);

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;

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 {

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) {
+	if (heartBeatItem->isVisible()) {
-		heartBeatAxis->setMinimum(pInfo.minhr);
+		if (pInfo.maxhr) {
-		heartBeatAxis->setMaximum(pInfo.maxhr);
+			heartBeatAxis->setMinimum(pInfo.minhr);
-		heartBeatAxis->updateTicks(); // this shows the ticks
+			heartBeatAxis->setMaximum(pInfo.maxhr);
-		heartBeatAxis->setVisible(true);
+			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);

subsurfacestartup.c

@@ -18,6 +18,7 @@ struct preferences default_prefs = {
 	.mod = false,
 	.mod_ppO2 = 1.6,
 	.ead = false,
+	.heart_rate = true,
 	.profile_dc_ceiling = true,
 	.profile_red_ceiling = false,
 	.profile_calc_ceiling = false,