1/*
2 * Copyright (C) 2013 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
17 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
18 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
19 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
20 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "modules/device_orientation/DeviceRotationRate.h"
28
29namespace blink {
30
31DeviceRotationRate::DeviceRotationRate(DeviceMotionData::RotationRate* rotationRate)
32    : m_rotationRate(rotationRate)
33{
34}
35
36void DeviceRotationRate::trace(Visitor* visitor)
37{
38    visitor->trace(m_rotationRate);
39}
40
41double DeviceRotationRate::alpha(bool& isNull) const
42{
43    if (m_rotationRate->canProvideAlpha())
44        return m_rotationRate->alpha();
45
46    isNull = true;
47    return 0;
48}
49
50double DeviceRotationRate::beta(bool& isNull) const
51{
52    if (m_rotationRate->canProvideBeta())
53        return m_rotationRate->beta();
54
55    isNull = true;
56    return 0;
57}
58
59double DeviceRotationRate::gamma(bool& isNull) const
60{
61    if (m_rotationRate->canProvideGamma())
62        return m_rotationRate->gamma();
63
64    isNull = true;
65    return 0;
66}
67
68} // namespace blink
69