xref: /external/chromium_org/third_party/WebKit/Source/modules/device_orientation/DeviceAcceleration.cpp

/*
 * Copyright (C) 2013 Google Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "modules/device_orientation/DeviceAcceleration.h"

namespace blink {

DeviceAcceleration::DeviceAcceleration(DeviceMotionData::Acceleration* acceleration)
    : m_acceleration(acceleration)
{
}

void DeviceAcceleration::trace(Visitor* visitor)
{
    visitor->trace(m_acceleration);
}

double DeviceAcceleration::x(bool& isNull) const
{
    if (m_acceleration->canProvideX())
        return m_acceleration->x();

    isNull = true;
    return 0;
}

double DeviceAcceleration::y(bool& isNull) const
{
    if (m_acceleration->canProvideY())
        return m_acceleration->y();

    isNull = true;
    return 0;
}

double DeviceAcceleration::z(bool& isNull) const
{
    if (m_acceleration->canProvideZ())
        return m_acceleration->z();

    isNull = true;
    return 0;
}

} // namespace blink