subsurface/qt-models/maplocationmodel.h
Lubomir I. Ivanov f44645b6fe maplocationmodel: store the coordinate as QGeoCoordinate
Instead of maintaining a seperate latitude/longitude values
in C++ and passing them to QML separatelly, pass them as a QGeoCoordinate.

This reduces the number of model "roles" and also prevents the creations
of extra objects in QML (e.g. via QtPositioning.coordinate(..)).

Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
2017-07-28 07:31:11 -07:00

60 lines
1.1 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#ifndef MAPLOCATIONMODEL_H
#define MAPLOCATIONMODEL_H
#include <QObject>
#include <QList>
#include <QHash>
#include <QByteArray>
#include <QAbstractListModel>
#include <QGeoCoordinate>
class MapLocation : public QObject
{
Q_OBJECT
Q_PROPERTY(QGeoCoordinate coordinate MEMBER m_coordinate)
public:
explicit MapLocation();
explicit MapLocation(QGeoCoordinate);
QVariant getRole(int role) const;
enum Roles {
RoleCoordinate = Qt::UserRole + 1,
};
private:
QGeoCoordinate m_coordinate;
};
class MapLocationModel : public QAbstractListModel
{
Q_OBJECT
Q_PROPERTY(int count READ count NOTIFY countChanged)
public:
MapLocationModel(QObject *parent = NULL);
~MapLocationModel();
Q_INVOKABLE MapLocation *get(int row);
QVariant data(const QModelIndex &index, int role) const override;
int rowCount(const QModelIndex &parent) const override;
int count();
void add(MapLocation *);
void clear();
protected:
QHash<int, QByteArray> roleNames() const;
private:
QList<MapLocation *> m_mapLocations;
QHash<int, QByteArray> m_roles;
signals:
void countChanged(int c);
};
#endif