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
|
/****************************************************************************
**
** 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.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <windows.h>
#include <gpsapi.h> // including requires <windows.h>
#include "qgeopositioninfosource_wince_p.h"
#include "qgeoinfothread_wince_p.h"
QTM_BEGIN_NAMESPACE
// ========== QGeoPositionInfoValidator ==========
QGeoPositionInfoValidator::QGeoPositionInfoValidator() : QGeoInfoValidator() {}
QGeoPositionInfoValidator::~QGeoPositionInfoValidator() {}
// Returns true if data contains at least the minimal amount of data we need to produce the
// QGeoPositionInfoSource positionUpdated signal, otherwise returns false.
bool QGeoPositionInfoValidator::valid(const GPS_POSITION &data) const
{
if (((data.dwValidFields & GPS_VALID_LATITUDE) == 0)
|| ((data.dwValidFields & GPS_VALID_LONGITUDE) == 0)
|| ((data.dwValidFields & GPS_VALID_UTC_TIME) == 0)) {
return false;
}
return true;
}
// ========== QGeoPositionInfoSourceWinCE ==========
QGeoPositionInfoSourceWinCE::QGeoPositionInfoSourceWinCE(QObject *parent)
: QGeoPositionInfoSource(parent)
{
QGeoInfoValidator *validator = new QGeoPositionInfoValidator();
// The QGeoInfoThreadWinCE instance takes ownership of the validator.
infoThread = new QGeoInfoThreadWinCE(validator, true, this);
infoThread->start();
// QGeoInfoThreadWinCE takes care of registering GPS_POSITION as a metatype.
connect(infoThread, SIGNAL(dataUpdated(GPS_POSITION)), this, SLOT(dataUpdated(GPS_POSITION)));
connect(infoThread, SIGNAL(updateTimeout()), this, SIGNAL(updateTimeout()));
}
QGeoPositionInfoSourceWinCE::~QGeoPositionInfoSourceWinCE()
{
delete infoThread;
}
QGeoPositionInfoSource::PositioningMethods QGeoPositionInfoSourceWinCE::supportedPositioningMethods() const
{
return QGeoPositionInfoSource::SatellitePositioningMethods;
}
QGeoPositionInfo QGeoPositionInfoSourceWinCE::lastKnownPosition(bool) const
{
return lastPosition;
}
void QGeoPositionInfoSourceWinCE::setUpdateInterval(int msec)
{
// If msec is 0 we send updates as data becomes available, otherwise we force msec to be equal
// to or larger than the minimum update interval.
if (msec != 0 && msec < MinimumUpdateInterval)
msec = MinimumUpdateInterval;
infoThread->setUpdateInterval(msec);
QGeoPositionInfoSource::setUpdateInterval(msec);
}
int QGeoPositionInfoSourceWinCE::minimumUpdateInterval() const
{
return MinimumUpdateInterval;
}
void QGeoPositionInfoSourceWinCE::startUpdates()
{
infoThread->startUpdates();
}
void QGeoPositionInfoSourceWinCE::stopUpdates()
{
infoThread->stopUpdates();
}
void QGeoPositionInfoSourceWinCE::requestUpdate(int timeout)
{
// A timeout of 0 means to use the default timeout, which is handled by the QGeoInfoThreadWinCE
// instance, otherwise if timeout is less than the minimum update interval we emit a
// updateTimeout signal
if (timeout < minimumUpdateInterval() && timeout != 0)
emit updateTimeout();
else
infoThread->requestUpdate(timeout);
}
/*
This is _only_ called when QGeoPositionInfoValidator::valid() returns true for the position.
This means that it is implied that:
- (data.dwValidFields & GPS_VALID_LATITUDE) != 0
- (data.dwValidFields & GPS_VALID_LONGITUDE) != 0
- (data.dwValidFields & GPS_VALID_UTC_TIME) != 0
This guarantees that the newly created position will be valid.
If the code is changed such that this is no longer guaranteed then this method will need to be
updated to test for those conditions.
*/
void QGeoPositionInfoSourceWinCE::dataUpdated(GPS_POSITION data)
{
QGeoCoordinate coordinate(data.dblLatitude, data.dblLongitude);
// The altitude is optional in QGeoCoordinate, so we do not strictly require that the
// GPS_POSITION structure has valid altitude data in order to trigger an update.
if ((data.dwValidFields & GPS_VALID_ALTITUDE_WRT_SEA_LEVEL) != 0)
coordinate.setAltitude(data.flAltitudeWRTSeaLevel);
QDate date(data.stUTCTime.wYear, data.stUTCTime.wMonth, data.stUTCTime.wDay);
QTime time(data.stUTCTime.wHour, data.stUTCTime.wMinute, data.stUTCTime.wSecond,
data.stUTCTime.wMilliseconds);
QDateTime dateTime(date, time, Qt::UTC);
QGeoPositionInfo pos(coordinate, dateTime);
// The following properties are optional, and so are set if the data is present and valid in
// the GPS_POSITION structure.
if ((data.dwValidFields & GPS_VALID_SPEED) != 0)
pos.setAttribute(QGeoPositionInfo::GroundSpeed, data.flSpeed);
if ((data.dwValidFields & GPS_VALID_HEADING) != 0)
pos.setAttribute(QGeoPositionInfo::Direction, data.flHeading);
if ((data.dwValidFields & GPS_VALID_MAGNETIC_VARIATION) != 0)
pos.setAttribute(QGeoPositionInfo::MagneticVariation, data.dblMagneticVariation);
lastPosition = pos;
emit positionUpdated(pos);
}
#include "moc_qgeopositioninfosource_wince_p.cpp"
QTM_END_NAMESPACE
|
