/****************************************************************************
**
** Copyright (C) 2016 Klaralvdalens Datakonsult AB (KDAB).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt3D 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 QT3DINPUT_INPUT_BUTTONAXISINPUT_H
#define QT3DINPUT_INPUT_BUTTONAXISINPUT_H

//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists for the convenience
// of other Qt classes.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//

#include <Qt3DInput/private/abstractaxisinput_p.h>

QT_BEGIN_NAMESPACE

namespace Qt3DInput {

namespace Input {

class Q_AUTOTEST_EXPORT ButtonAxisInput : public AbstractAxisInput
{
public:
    enum UpdateType {
        Accelerate,
        Decelerate
    };

    ButtonAxisInput();
    void cleanup() final;

    inline float scale() const { return m_scale; }
    inline QVector<int> buttons() const { return m_buttons; }

    inline float acceleration() const { return m_acceleration < 0.0f ? qInf() : m_acceleration; }
    inline float deceleration() const { return m_deceleration < 0.0f ? qInf() : m_deceleration; }
    inline float speedRatio() const { return m_speedRatio; }
    inline qint64 lastUpdateTime() const { return m_lastUpdateTime; }

    void syncFromFrontEnd(const Qt3DCore::QNode *frontEnd, bool firstTime) final;

    float process(InputHandler *inputHandler, qint64 currentTime) override;

private:
    void updateSpeedRatio(qint64 currentTime, UpdateType type);

    QVector<int> m_buttons;
    float m_scale;
    float m_acceleration;
    float m_deceleration;
    float m_speedRatio;
    qint64 m_lastUpdateTime;
};

} // namespace Input

} // namespace Qt3DInput

QT_END_NAMESPACE

#endif // QT3DINPUT_INPUT_BUTTONAXISINPUT_H