subsurface/qt-models/maplocationmodel.cpp
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

79 lines
1.6 KiB
C++

// SPDX-License-Identifier: GPL-2.0
#include "maplocationmodel.h"
MapLocation::MapLocation()
{
}
MapLocation::MapLocation(QGeoCoordinate coord) :
m_coordinate(coord)
{
}
QVariant MapLocation::getRole(int role) const
{
switch (role) {
case Roles::RoleCoordinate:
return QVariant::fromValue(m_coordinate);
default:
return QVariant();
}
}
MapLocationModel::MapLocationModel(QObject *parent) : QAbstractListModel(parent)
{
m_roles[MapLocation::Roles::RoleCoordinate] = "coordinate";
}
MapLocationModel::~MapLocationModel()
{
clear();
}
QVariant MapLocationModel::data( const QModelIndex & index, int role ) const
{
if (index.row() < 0 || index.row() >= m_mapLocations.size())
return QVariant();
return m_mapLocations.at(index.row())->getRole(role);
}
QHash<int, QByteArray> MapLocationModel::roleNames() const
{
return m_roles;
}
int MapLocationModel::rowCount(const QModelIndex &parent) const
{
Q_UNUSED(parent);
return m_mapLocations.size();
}
int MapLocationModel::count()
{
return m_mapLocations.size();
}
MapLocation *MapLocationModel::get(int row)
{
if (row < 0 || row >= m_mapLocations.size())
return NULL;
return m_mapLocations.at(row);
}
void MapLocationModel::add(MapLocation *location)
{
beginInsertRows(QModelIndex(), m_mapLocations.size(), m_mapLocations.size());
m_mapLocations.append(location);
endInsertRows();
}
void MapLocationModel::clear()
{
if (!m_mapLocations.size())
return;
beginRemoveRows(QModelIndex(), 0, m_mapLocations.size() - 1);
qDeleteAll(m_mapLocations);
m_mapLocations.clear();
endRemoveRows();
}