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Compute live location bounding box and center the map accordingly

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This commit is contained in:
Volker Krause
2023-06-14 17:54:09 +02:00
parent 05082cb2bb
commit 25f9c7e125
3 changed files with 27 additions and 2 deletions
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18
src/models/livelocationsmodel.cpp
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@@ -38,6 +38,9 @@ LiveLocationsModel::LiveLocationsModel(QObject *parent)
});
},
Qt::QueuedConnection); // deferred so we are sure the eventId filter is set
connect(this, &LiveLocationsModel::dataChanged, this, &LiveLocationsModel::boundingBoxChanged);
connect(this, &LiveLocationsModel::rowsInserted, this, &LiveLocationsModel::boundingBoxChanged);
}
int LiveLocationsModel::rowCount(const QModelIndex &parent) const
@@ -101,6 +104,21 @@ QHash<int, QByteArray> LiveLocationsModel::roleNames() const
return r;
}
QRectF LiveLocationsModel::boundingBox() const
{
QRectF bbox(QPointF(180.0, 90.0), QPointF(-180.0, -90.0));
for (auto i = 0; i < rowCount(); ++i) {
const auto lat = data(index(i, 0), LatitudeRole).toDouble();
const auto lon = data(index(i, 0), LongitudeRole).toDouble();
bbox.setLeft(std::min(bbox.left(), lon));
bbox.setRight(std::max(bbox.right(), lon));
bbox.setTop(std::min(bbox.top(), lat));
bbox.setBottom(std::max(bbox.bottom(), lat));
}
return bbox;
}
void LiveLocationsModel::addEvent(const Quotient::RoomEvent *event)
{
if (event->isStateEvent() && event->matrixType() == "org.matrix.msc3672.beacon_info") {