mapwidgethelper: add the selectVisibleLocations() method

The new method selectVisibleLocations() contains a routine
to find all visible MapLocation objects in the Map viewport and
select the dives associated to said MapLocation objects.

This method is to be invoked from the QML context menu.

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>

2 files changed, 28 insertions, 0 deletions

diff --git a/mobile-widgets/qmlmapwidgethelper.cpp b/mobile-widgets/qmlmapwidgethelper.cpp
index 954a83ebf..1b9c9a909 100644
--- a/mobile-widgets/qmlmapwidgethelper.cpp
+++ b/mobile-widgets/qmlmapwidgethelper.cpp
@@ -144,6 +144,33 @@ void MapWidgetHelper::selectedLocationChanged(MapLocation *location)
 	emit selectedDivesChanged(m_selectedDiveIds);
 }
 
+void MapWidgetHelper::selectVisibleLocations()
+{
+	int idx;
+	struct dive *dive;
+	bool selectedFirst = false;
+	m_selectedDiveIds.clear();
+	for_each_dive (idx, dive) {
+		struct dive_site *ds = get_dive_site_for_dive(dive);
+		if (!dive_site_has_gps_location(ds))
+			continue;
+		MapLocation *loc = m_mapLocationModel->getMapLocationForUuid(ds->uuid);
+		if (loc) {
+			QPointF point;
+			QMetaObject::invokeMethod(m_map, "fromCoordinate", Q_RETURN_ARG(QPointF, point),
+			                          Q_ARG(QGeoCoordinate, loc->coordinate()));
+			if (!qIsNaN(point.x())) {
+				if (!selectedFirst) {
+					m_mapLocationModel->setSelectedUuid(ds->uuid, false);
+					selectedFirst = true;
+				}
+				m_selectedDiveIds.append(idx);
+			}
+		}
+	}
+	emit selectedDivesChanged(m_selectedDiveIds);
+}
+
 /*
  * Based on a 2D Map widget circle with center "coord" and radius SMALL_CIRCLE_RADIUS_PX,
  * obtain a "small circle" with radius m_smallCircleRadius in meters:
diff --git a/mobile-widgets/qmlmapwidgethelper.h b/mobile-widgets/qmlmapwidgethelper.h
index 6cba3dc91..830c8478f 100644
--- a/mobile-widgets/qmlmapwidgethelper.h
+++ b/mobile-widgets/qmlmapwidgethelper.h
@@ -24,6 +24,7 @@ public:
 	Q_INVOKABLE void copyToClipboardCoordinates(QGeoCoordinate coord, bool formatTraditional);
 	Q_INVOKABLE void calculateSmallCircleRadius(QGeoCoordinate coord);
 	Q_INVOKABLE void updateCurrentDiveSiteCoordinates(quint32 uuid, QGeoCoordinate coord);
+	Q_INVOKABLE void selectVisibleLocations();
 	bool editMode();
 	void setEditMode(bool editMode);