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/*
* Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "DeviceOrientationProviderQt.h"
namespace WebCore {
DeviceOrientationProviderQt::DeviceOrientationProviderQt()
: m_controller(0)
{
m_sensor.addFilter(this);
m_lastOrientation = DeviceOrientationData::create();
}
DeviceOrientationProviderQt::~DeviceOrientationProviderQt()
{
}
void DeviceOrientationProviderQt::setController(DeviceOrientationController* controller)
{
if (!controller)
stop();
m_controller = controller;
}
void DeviceOrientationProviderQt::start()
{
m_sensor.start();
}
void DeviceOrientationProviderQt::stop()
{
m_sensor.stop();
}
bool DeviceOrientationProviderQt::filter(QRotationReading* reading)
{
if (m_controller) {
// Provide device orientation data according W3C spec:
// http://dev.w3.org/geo/api/spec-source-orientation.html
// Qt mobility (QtSensors in Qt5) provide these data via QRotationSensor
// using the QRotationReading class:
// - the rotation around z axis (alpha) is given as z in QRotationReading;
// - the rotation around x axis (beta) is given as x in QRotationReading;
// - the rotation around y axis (gamma) is given as y in QRotationReading;
// See: http://doc.qt.nokia.com/qtmobility-1.0/qrotationreading.html
// The Z (alpha) rotation angle is checked via hasAlpha() private method,
// depending if the device is able do detect the alpha rotation. X (beta) and
// Y (gamma) axis are availble in this context.
m_lastOrientation = DeviceOrientationData::create(hasAlpha(), reading->z(),
/* x available */ true, reading->x(),
/* y available */ true, reading->y());
m_controller->didChangeDeviceOrientation(m_lastOrientation.get());
}
// We are the only filter, so no need to propagate.
return false;
}
}
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