Map: remove LocationInformationWidget::coordinatesChanged signal

This was used by LocationInformationWidget to instruct the map
that the coordinates of the current dive site has changed.
There is no reason why this couldn't be a function call, as no
other object ever connect()s to this signal. In fact, such a
function already exists viz. updateLocationOnMap.

Therefore, replace the signal by a simple function call.

Moreover, the uuid and coordinates of the dive site were transported
via the global "displayed_dive_site" object. Instead, pass this
information in the parameters of the function. This makes it
easier to reason about data- and control-flow.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>

desktop-widgets/locationinformation.cpp

@@ -57,8 +57,6 @@ LocationInformationWidget::LocationInformationWidget(QWidget *parent) : QGroupBo
 		this, &LocationInformationWidget::updateGpsCoordinates);
 	connect(this, &LocationInformationWidget::endEditDiveSite,
 		MapWidget::instance(), &MapWidget::repopulateLabels);
-	connect(this, &LocationInformationWidget::coordinatesChanged,
-		MapWidget::instance(), &MapWidget::updateCurrentDiveSiteCoordinatesToMap);
 }
 
 bool LocationInformationWidget::eventFilter(QObject *object, QEvent *ev)
@@ -70,7 +68,7 @@ bool LocationInformationWidget::eventFilter(QObject *object, QEvent *ev)
 		contextMenu.exec(ctx->globalPos());
 		return true;
 	} else if (ev->type() == QEvent::FocusOut && object == ui.diveSiteCoordinates) {
-		emit coordinatesChanged();
+		updateLocationOnMap();
 	}
 	return false;
 }
@@ -218,7 +216,7 @@ void LocationInformationWidget::acceptChanges()
 	emit endRequestCoordinates();
 	emit endEditDiveSite();
 	emit stopFilterDiveSite();
-	emit coordinatesChanged();
+	updateLocationOnMap();
 }
 
 void LocationInformationWidget::rejectChanges()
@@ -227,7 +225,7 @@ void LocationInformationWidget::rejectChanges()
 	emit endRequestCoordinates();
 	emit stopFilterDiveSite();
 	emit endEditDiveSite();
-	emit coordinatesChanged();
+	updateLocationOnMap();
 }
 
 void LocationInformationWidget::showEvent(QShowEvent *ev)
@@ -336,7 +334,9 @@ void LocationInformationWidget::reverseGeocode()
 
 void LocationInformationWidget::updateLocationOnMap()
 {
-	emit coordinatesChanged();
+	if (displayed_dive_site.uuid)
+		MapWidget::instance()->updateDiveSiteCoordinates(displayed_dive_site.uuid, displayed_dive_site.latitude,
+								 displayed_dive_site.longitude);
 }
 
 DiveLocationFilterProxyModel::DiveLocationFilterProxyModel(QObject*)

desktop-widgets/locationinformation.h

@@ -38,7 +38,6 @@ private slots:
 signals:
 	void startEditDiveSite(uint32_t uuid);
 	void endEditDiveSite();
-	void coordinatesChanged();
 	void startFilterDiveSite(uint32_t uuid);
 	void stopFilterDiveSite();
 	void requestCoordinates();

desktop-widgets/mapwidget.cpp

@@ -122,10 +122,10 @@ void MapWidget::coordinatesChangedLocal()
 	emit coordinatesChanged();
 }
 
-void MapWidget::updateCurrentDiveSiteCoordinatesToMap()
+void MapWidget::updateDiveSiteCoordinates(uint32_t uuid, degrees_t latitude, degrees_t longitude)
 {
 	CHECK_IS_READY_RETURN_VOID();
-	m_mapHelper->updateCurrentDiveSiteCoordinatesToMap();
+	m_mapHelper->updateDiveSiteCoordinates(uuid, latitude, longitude);
 }
 
 MapWidget::~MapWidget()

desktop-widgets/mapwidget.h

@@ -2,6 +2,7 @@
 #ifndef MAPWIDGET_H
 #define MAPWIDGET_H
 
+#include "core/units.h"
 #include <QQuickWidget>
 #include <QList>
 
@@ -36,7 +37,7 @@ public slots:
 	void selectedDivesChanged(QList<int>);
 	void coordinatesChangedLocal();
 	void doneLoading(QQuickWidget::Status status);
-	void updateCurrentDiveSiteCoordinatesToMap();
+	void updateDiveSiteCoordinates(uint32_t uuid, degrees_t latitude, degrees_t longitude);
 
 private:
 	void setEditMode(bool editMode);

map-widget/qmlmapwidgethelper.cpp

@@ -277,12 +277,12 @@ void MapWidgetHelper::updateCurrentDiveSiteCoordinatesFromMap(quint32 uuid, QGeo
 	emit coordinatesChanged();
 }
 
-void MapWidgetHelper::updateCurrentDiveSiteCoordinatesToMap()
+void MapWidgetHelper::updateDiveSiteCoordinates(uint32_t uuid, degrees_t latitude, degrees_t longitude)
 {
-	const qreal latitude = displayed_dive_site.latitude.udeg * 0.000001;
+	const qreal latitude_r = latitude.udeg * 0.000001;
-	const qreal longitude = displayed_dive_site.longitude.udeg * 0.000001;
+	const qreal longitude_r = longitude.udeg * 0.000001;
-	QGeoCoordinate coord(latitude, longitude);
+	QGeoCoordinate coord(latitude_r, longitude_r);
-	m_mapLocationModel->updateMapLocationCoordinates(displayed_dive_site.uuid, coord);
+	m_mapLocationModel->updateMapLocationCoordinates(uuid, coord);
 	QMetaObject::invokeMethod(m_map, "centerOnCoordinate", Q_ARG(QVariant, QVariant::fromValue(coord)));
 }
 

map-widget/qmlmapwidgethelper.h

@@ -2,6 +2,7 @@
 #ifndef QMLMAPWIDGETHELPER_H
 #define QMLMAPWIDGETHELPER_H
 
+#include "core/units.h"
 #include <QObject>
 #include <QGeoCoordinate>
 #include <QVariant>
@@ -35,7 +36,7 @@ public:
 	Q_INVOKABLE void calculateSmallCircleRadius(QGeoCoordinate coord);
 	Q_INVOKABLE void updateCurrentDiveSiteCoordinatesFromMap(quint32 uuid, QGeoCoordinate coord);
 	Q_INVOKABLE void selectVisibleLocations();
-	void updateCurrentDiveSiteCoordinatesToMap();
+	void updateDiveSiteCoordinates(uint32_t uuid, degrees_t latitude, degrees_t longitude);
 	bool editMode();
 	void setEditMode(bool editMode);
 	QString pluginObject();