blob: 34cf5ed924faceb3cc3f963d6d602cfbe798d9a5 (
plain)
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
186
187
188
|
/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtSensors module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qcompass.h"
#include "qcompass_p.h"
QT_BEGIN_NAMESPACE
IMPLEMENT_READING(QCompassReading)
/*!
\class QCompassReading
\ingroup sensors_reading
\inmodule QtSensors
\since 5.1
\brief The QCompassReading class represents one reading from a
compass.
\section2 QCompassReading Units
The compass returns the azimuth of the device as degrees from
magnetic north in a clockwise direction based on the top of the device,
as defined by QPlatformScreen::nativeOrientation.
There is also a value to indicate the calibration status of the device.
If the device is not calibrated the azimuth may not be accurate.
Digital compasses are susceptible to magnetic interference and may need
calibration after being placed near anything that emits a magnetic force.
Accuracy of the compass can be affected by any ferrous materials that are nearby.
The calibration status of the device is measured as a number from 0 to 1.
A value of 1 is the highest level that the device can support and 0 is
the worst.
\sa {http://wiki.forum.nokia.com/index.php/CS001671_-_Calibrating_the_magnetometer_sensor}{CS001671 - Calibrating the magnetometer sensor}
*/
/*!
\property QCompassReading::azimuth
\brief the azimuth of the device.
Measured in degrees from magnetic north in a clockwise direction based on
the top of the device, as defined by QPlatformScreen::nativeOrientation.
\sa {QCompassReading Units}
*/
qreal QCompassReading::azimuth() const
{
return d->azimuth;
}
/*!
Sets the \a azimuth of the device.
\sa {QCompassReading Units}
*/
void QCompassReading::setAzimuth(qreal azimuth)
{
d->azimuth = azimuth;
}
/*!
\property QCompassReading::calibrationLevel
\brief the calibration level of the reading.
Measured as a value from 0 to 1 with higher values being better.
\sa {QCompassReading Units}, {http://wiki.forum.nokia.com/index.php/CS001671_-_Calibrating_the_magnetometer_sensor}{CS001671 - Calibrating the magnetometer sensor}
*/
qreal QCompassReading::calibrationLevel() const
{
return d->calibrationLevel;
}
/*!
Sets the calibration level of the reading to \a calibrationLevel.
*/
void QCompassReading::setCalibrationLevel(qreal calibrationLevel)
{
d->calibrationLevel = calibrationLevel;
}
// =====================================================================
/*!
\class QCompassFilter
\ingroup sensors_filter
\inmodule QtSensors
\since 5.1
\brief The QCompassFilter class is a convenience wrapper around QSensorFilter.
The only difference is that the filter() method features a pointer to QCompassReading
instead of QSensorReading.
*/
/*!
\fn QCompassFilter::filter(QCompassReading *reading)
Called when \a reading changes. Returns false to prevent the reading from propagating.
\sa QSensorFilter::filter()
*/
bool QCompassFilter::filter(QSensorReading *reading)
{
return filter(static_cast<QCompassReading*>(reading));
}
char const * const QCompass::type("QCompass");
/*!
\class QCompass
\ingroup sensors_type
\inmodule QtSensors
\since 5.1
\brief The QCompass class is a convenience wrapper around QSensor.
The only behavioural difference is that this class sets the type properly.
This class also features a reading() function that returns a QCompassReading instead of a QSensorReading.
For details about how the sensor works, see \l QCompassReading.
\sa QCompassReading
*/
/*!
Construct the sensor as a child of \a parent.
*/
QCompass::QCompass(QObject *parent)
: QSensor(QCompass::type, parent)
{
}
/*!
Destroy the sensor. Stops the sensor if it has not already been stopped.
*/
QCompass::~QCompass()
{
}
/*!
\fn QCompass::reading() const
Returns the reading class for this sensor.
\sa QSensor::reading()
*/
QCompassReading *QCompass::reading() const
{
return static_cast<QCompassReading*>(QSensor::reading());
}
#include "moc_qcompass.cpp"
QT_END_NAMESPACE
|
