subsurface/qt-models/gpslistmodel.cpp
Dirk Hohndel 2a579987c2 fix potential crash in GPS code
If we don't have a GpsLocation instance, we shouldn't dereference it.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2021-01-01 12:38:50 -08:00

72 lines
1.7 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#include "qt-models/gpslistmodel.h"
#include "core/subsurface-qt/divelistnotifier.h"
#include "core/qthelper.h"
#include <QVector>
GpsListModel::GpsListModel()
{
connect(&diveListNotifier, &DiveListNotifier::dataReset, this, &GpsListModel::update);
}
void GpsListModel::update()
{
GpsLocation *glp = GpsLocation::instance();
if (!glp)
return;
QVector<gpsTracker> trackers = QVector<gpsTracker>::fromList(glp->currentGPSInfo().values());
beginResetModel();
m_gpsFixes = trackers;
endResetModel();
}
void GpsListModel::clear()
{
if (m_gpsFixes.count()) {
beginRemoveRows(QModelIndex(), 0, m_gpsFixes.count() - 1);
m_gpsFixes.clear();
endRemoveRows();
}
}
int GpsListModel::rowCount(const QModelIndex&) const
{
return m_gpsFixes.count();
}
QVariant GpsListModel::data(const QModelIndex &index, int role) const
{
if (index.row() < 0 || index.row() > m_gpsFixes.count())
return QVariant();
const gpsTracker &gt = m_gpsFixes[index.row()];
if (role == GpsDateRole)
return get_short_dive_date_string(gt.when);
else if (role == GpsWhenRole)
return gt.when;
else if (role == GpsNameRole)
return gt.name;
else if (role == GpsLatitudeRole)
return QString::number(gt.location.lat.udeg / 1000000.0, 'f', 6);
else if (role == GpsLongitudeRole)
return QString::number(gt.location.lon.udeg / 1000000.0, 'f', 6);
return QVariant();
}
QHash<int, QByteArray> GpsListModel::roleNames() const
{
QHash<int, QByteArray> roles;
roles[GpsDateRole] = "date";
roles[GpsWhenRole] = "when";
roles[GpsNameRole] = "name";
roles[GpsLatitudeRole] = "latitude";
roles[GpsLongitudeRole] = "longitude";
return roles;
}
GpsListModel *GpsListModel::instance()
{
static GpsListModel self;
return &self;
}