1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
|
/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt Mobility Components.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#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
\since Mobility 1.2
\ingroup qml-location-plugin
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
\since Mobility 1.2
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
\since Mobility 1.2
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
\since Mobility 1.2
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)
\since Mobility 1.2
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
|
