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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtSensors module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** 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 The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/


#ifndef QWFLICKSENSORGESTURERECOGNIZER_H
#define QWFLICKSENSORGESTURERECOGNIZER_H

#include <QtSensors/qsensorgesturerecognizer.h>
#include <QtSensors/QAccelerometer>
#include <QtSensors/QOrientationSensor>
#include "qtsensorgesturesensorhandler.h"

QT_BEGIN_NAMESPACE

struct twistAccelData {
    qreal x;
    qreal y;
    qreal z;
};

class QTwistSensorGestureRecognizer : public QSensorGestureRecognizer
{
    Q_OBJECT
public:
    explicit QTwistSensorGestureRecognizer(QObject *parent = 0);
    ~QTwistSensorGestureRecognizer();

    void create() override;

    QString id() const override;
    bool start() override;
    bool stop() override;
    bool isActive() override;

Q_SIGNALS:
    void twistLeft();
    void twistRight();

private slots:
    void accelChanged(QAccelerometerReading *reading);
    void orientationReadingChanged(QOrientationReading *reading);
    void checkTwist();

private:

    QOrientationReading *orientationReading;
    bool active;
    bool detecting;
    QList <twistAccelData> dataList;
    bool checking;
    void reset();
    bool checkOrientation();
    int increaseCount;
    int decreaseCount;
    qreal lastAngle;
    QList <QOrientationReading::Orientation> orientationList;
    qreal detectedAngle;
};
QT_END_NAMESPACE
#endif // QWFLICKSENSORGESTURERECOGNIZER_H