/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtFeedback 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 QFEEDBACKEFFECT_H
#define QFEEDBACKEFFECT_H

#include "qfeedbackglobal.h"

#include <QtCore/QObject>
#include <QtCore/QStringList>
#include <QtCore/QUrl>

QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE

class QFeedbackActuator;
class QFeedbackFileEffectPrivate;
class QFeedbackHapticsEffectPrivate;

class Q_FEEDBACK_EXPORT QFeedbackEffect : public QObject
{
    Q_OBJECT
    Q_ENUMS(Effect)
    Q_ENUMS(Duration)
    Q_ENUMS(State)
    Q_ENUMS(ErrorType)

    Q_PROPERTY(int duration READ duration)
    Q_PROPERTY(State state READ state NOTIFY stateChanged)

public:
    // Make sure these are kept up to date with the declarative version
    enum Effect {
        Undefined = -1, Press, Release, PressWeak, ReleaseWeak, PressStrong, ReleaseStrong, DragStart,
        DragDropInZone, DragDropOutOfZone, DragCrossBoundary, Appear, Disappear, Move,
        NumberOfEffects,
        UserEffect = 65535
    };

    enum Duration {
        Infinite = -1
    };

    enum State {
        Stopped,
        Paused,
        Running,
        Loading
    };

    enum ErrorType {
        UnknownError,
        DeviceBusy
    };

    explicit QFeedbackEffect(QObject *parent = Q_NULLPTR);

    virtual State state() const = 0;
    virtual int duration() const = 0;

    //for themes
    static bool supportsThemeEffect();
    static bool playThemeEffect(Effect effect);

public Q_SLOTS:
    void start();
    void stop();
    void pause();

protected:
    virtual void setState(State) = 0;

Q_SIGNALS:
    void error(QFeedbackEffect::ErrorType) const; //when an error occurs
    void stateChanged();

private:
    friend class QFeedbackInterface;
};

class Q_FEEDBACK_EXPORT QFeedbackHapticsEffect : public QFeedbackEffect
{
    Q_OBJECT

    Q_PROPERTY(int duration READ duration WRITE setDuration)
    Q_PROPERTY(qreal intensity READ intensity WRITE setIntensity)
    Q_PROPERTY(int attackTime READ attackTime WRITE setAttackTime)
    Q_PROPERTY(qreal attackIntensity READ attackIntensity WRITE setAttackIntensity)
    Q_PROPERTY(int fadeTime READ fadeTime WRITE setFadeTime)
    Q_PROPERTY(qreal fadeIntensity READ fadeIntensity WRITE setFadeIntensity)
    Q_PROPERTY(int period READ period WRITE setPeriod)
    Q_PROPERTY(QFeedbackActuator* actuator READ actuator WRITE setActuator)

public:
    explicit QFeedbackHapticsEffect(QObject *parent = Q_NULLPTR);
    ~QFeedbackHapticsEffect();

    void setDuration(int msecs);
    int duration() const;

    void setIntensity(qreal intensity);
    qreal intensity() const;

    //the envelope
    void setAttackTime(int msecs);
    int attackTime() const;

    void setAttackIntensity(qreal intensity);
    qreal attackIntensity() const;

    void setFadeTime(int msecs);
    int fadeTime() const;

    void setFadeIntensity(qreal intensity);
    qreal fadeIntensity() const;

    void setPeriod(int msecs);
    int period() const;

    void setActuator(QFeedbackActuator *actuator);
    QFeedbackActuator* actuator() const;

    //reimplementations from QFeedbackEffect
    virtual State state() const;

protected:
    virtual void setState(State);

private:
    Q_DISABLE_COPY(QFeedbackHapticsEffect)
    friend class QFeedbackHapticsEffectPrivate;
    QScopedPointer<QFeedbackHapticsEffectPrivate> priv;
};

class Q_FEEDBACK_EXPORT QFeedbackFileEffect : public QFeedbackEffect
{
    Q_OBJECT

    Q_PROPERTY(bool loaded READ isLoaded WRITE setLoaded)
    Q_PROPERTY(QUrl source READ source WRITE setSource)

public:
    explicit QFeedbackFileEffect(QObject *parent = Q_NULLPTR);
    ~QFeedbackFileEffect();

    int duration() const;

    bool isLoaded() const;

    void load();
    void unload();
    void setLoaded(bool);

    QUrl source() const;
    void setSource(const QUrl &);

    static QStringList supportedMimeTypes();

    //reimplementations from QFeedbackEffect
    virtual State state() const;

protected:
    virtual void setState(State);

private:
    Q_DISABLE_COPY(QFeedbackFileEffect)
    friend class QFeedbackFileEffectPrivate;
    QScopedPointer<QFeedbackFileEffectPrivate> priv;
};

QT_END_NAMESPACE
QT_END_HEADER

#endif // QFEEDBACKEFFECT_H