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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qdeclarativecoordinate_p.h"
#include <qnumeric.h>
#include "qdeclarative.h"
QTM_BEGIN_NAMESPACE
/*!
\qmlclass Coordinate
\brief The Coordinate element holds various positional data, such as \l
latitude, \l longitude and \l altitude.
\inherits QObject
\ingroup qml-location
The Coordinate element is part of the \bold{QtMobility.location 1.1} module.
*/
QDeclarativeCoordinate::QDeclarativeCoordinate(QObject* parent)
: QObject(parent) {}
QDeclarativeCoordinate::QDeclarativeCoordinate(const QGeoCoordinate &coordinate,
QObject *parent)
: QObject(parent),
m_coordinate(coordinate) {}
QDeclarativeCoordinate::~QDeclarativeCoordinate() {}
void QDeclarativeCoordinate::setCoordinate(const QGeoCoordinate &coordinate)
{
QGeoCoordinate previousCoordinate = m_coordinate;
m_coordinate = coordinate;
// Comparing two NotANumbers is false which is not wanted here
if (coordinate.altitude() != previousCoordinate.altitude() &&
!(qIsNaN(coordinate.altitude()) && qIsNaN(previousCoordinate.altitude()))) {
emit altitudeChanged(m_coordinate.altitude());
}
if (coordinate.latitude() != previousCoordinate.latitude() &&
!(qIsNaN(coordinate.latitude()) && qIsNaN(previousCoordinate.latitude()))) {
emit latitudeChanged(m_coordinate.latitude());
}
if (coordinate.longitude() != previousCoordinate.longitude() &&
!(qIsNaN(coordinate.longitude()) && qIsNaN(previousCoordinate.longitude()))) {
emit longitudeChanged(m_coordinate.longitude());
}
}
QGeoCoordinate QDeclarativeCoordinate::coordinate() const
{
return m_coordinate;
}
/*!
\qmlproperty double Coordinate::altitude
This property holds the value of altitude (metres above sea level).
If the property has not been set, its default value is zero.
*/
void QDeclarativeCoordinate::setAltitude(double altitude)
{
if (m_coordinate.altitude() != altitude) {
m_coordinate.setAltitude(altitude);
emit altitudeChanged(m_coordinate.altitude());
}
}
double QDeclarativeCoordinate::altitude() const
{
return m_coordinate.altitude();
}
/*!
\qmlproperty double Coordinate::longitude
This property holds the longitude value of the geographical position
(decimal degrees). A positive longitude indicates the Eastern Hemisphere,
and a negative longitude indicates the Western Hemisphere
If the property has not been set, its default value is zero.
*/
void QDeclarativeCoordinate::setLongitude(double longitude)
{
if (m_coordinate.longitude() != longitude) {
m_coordinate.setLongitude(longitude);
emit longitudeChanged(m_coordinate.longitude());
}
}
double QDeclarativeCoordinate::longitude() const
{
return m_coordinate.longitude();
}
/*!
\qmlproperty double Coordinate::latitude
This property holds latitude value of the geographical position
(decimal degrees). A positive latitude indicates the Northern Hemisphere,
and a negative latitude indicates the Southern Hemisphere.
If the property has not been set, its default value is zero.
*/
void QDeclarativeCoordinate::setLatitude(double latitude)
{
if (m_coordinate.latitude() != latitude) {
m_coordinate.setLatitude(latitude);
emit latitudeChanged(latitude);
}
}
double QDeclarativeCoordinate::latitude() const
{
return m_coordinate.latitude();
}
/*!
\qmlmethod Coordinate::distanceTo(Coordinate)
Returns the distance (in meters) from this coordinate to the
coordinate specified by other. Altitude is not used in the calculation.
This calculation returns the great-circle distance between the two
coordinates, with an assumption that the Earth is spherical for the
purpose of this calculation.
*/
qreal QDeclarativeCoordinate::distanceTo(QObject* coordinate)
{
QDeclarativeCoordinate* coord = static_cast<QDeclarativeCoordinate*>(coordinate);
return m_coordinate.distanceTo(coord->coordinate());
}
#include "moc_qdeclarativecoordinate_p.cpp"
QTM_END_NAMESPACE
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