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Map: ignore dive sites without location in centerOnSelectedDiveSite()

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Don't zoom onto (0,0) for selected dive sites that have no location.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2019-05-08 22:26:28 +02:00 • committed by Dirk Hohndel
parent 0da86dfd86
commit 30d96d3704
1 changed files with 33 additions and 29 deletions
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62
map-widget/qmlmapwidgethelper.cpp
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@ -48,45 +48,49 @@ void MapWidgetHelper::centerOnDiveSite(struct dive_site *ds)
void MapWidgetHelper::centerOnSelectedDiveSite()
{
QVector<struct dive_site *> selDS = m_mapLocationModel->selectedDs();
QVector<QGeoCoordinate> selGC;
if (selDS.isEmpty()) {
// no selected dives with GPS coordinates
QMetaObject::invokeMethod(m_map, "deselectMapLocation");
} else if (selDS.size() == 1) {
return;
}
// find the most top-left and bottom-right dive sites on the map coordinate system.
qreal minLat = 0.0, minLon = 0.0, maxLat = 0.0, maxLon = 0.0;
int count = 0;
for(struct dive_site *dss: selDS) {
if (!has_location(&dss->location))
continue;
qreal lat = dss->location.lat.udeg * 0.000001;
qreal lon = dss->location.lon.udeg * 0.000001;
if (++count == 1) {
minLat = maxLat = lat;
minLon = maxLon = lon;
continue;
}
if (lat < minLat)
minLat = lat;
else if (lat > maxLat)
maxLat = lat;
if (lon < minLon)
minLon = lon;
else if (lon > maxLon)
maxLon = lon;
}
// Pass coordinates to QML, either as a point or as a rectangle.
// If we didn't find any coordinates, do nothing.
if (count == 1) {
QGeoCoordinate dsCoord (selDS[0]->location.lat.udeg * 0.000001, selDS[0]->location.lon.udeg * 0.000001);
QMetaObject::invokeMethod(m_map, "centerOnCoordinate", Q_ARG(QVariant, QVariant::fromValue(dsCoord)));
} else {
/* more than one dive sites with GPS selected.
* find the most top-left and bottom-right dive sites on the map coordinate system. */
qreal minLat = 0.0, minLon = 0.0, maxLat = 0.0, maxLon = 0.0;
bool start = true;
for(struct dive_site *dss: selDS) {
qreal lat = dss->location.lat.udeg * 0.000001;
qreal lon = dss->location.lon.udeg * 0.000001;
if (start) {
minLat = maxLat = lat;
minLon = maxLon = lon;
start = false;
continue;
}
if (lat < minLat)
minLat = lat;
else if (lat > maxLat)
maxLat = lat;
if (lon < minLon)
minLon = lon;
else if (lon > maxLon)
maxLon = lon;
}
// pass rectangle coordinates to QML
} else if (count > 1) {
QGeoCoordinate coordTopLeft(minLat, minLon);
QGeoCoordinate coordBottomRight(maxLat, maxLon);
QGeoCoordinate coordCenter(minLat + (maxLat - minLat) * 0.5, minLon + (maxLon - minLon) * 0.5);
QMetaObject::invokeMethod(m_map, "centerOnRectangle",
Q_ARG(QVariant, QVariant::fromValue(coordTopLeft)),
Q_ARG(QVariant, QVariant::fromValue(coordBottomRight)),
Q_ARG(QVariant, QVariant::fromValue(coordCenter)));
Q_ARG(QVariant, QVariant::fromValue(coordTopLeft)),
Q_ARG(QVariant, QVariant::fromValue(coordBottomRight)),
Q_ARG(QVariant, QVariant::fromValue(coordCenter)));
}
}