qquicksmoothedanimation_p_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QQUICKSMOOTHEDANIMATION2_P_H
#define QQUICKSMOOTHEDANIMATION2_P_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include "qquicksmoothedanimation_p.h"
#include "qquickanimation_p.h"
 
#include "qquickanimation_p_p.h"
 
#include <private/qobject_p.h>
#include <QBasicTimer>
 
QT_BEGIN_NAMESPACE
class QSmoothedAnimation;
class QSmoothedAnimationTimer : public QTimer
{
    Q_OBJECT
public:
    explicit QSmoothedAnimationTimer(QSmoothedAnimation *animation, QObject *parent = nullptr);
    ~QSmoothedAnimationTimer();
public Q_SLOTS:
    void stopAnimation();
private:
    QSmoothedAnimation *m_animation;
};
 
class QQuickSmoothedAnimationPrivate;
class Q_AUTOTEST_EXPORT QSmoothedAnimation : public QAbstractAnimationJob
{
    Q_DISABLE_COPY(QSmoothedAnimation)
public:
    QSmoothedAnimation(QQuickSmoothedAnimationPrivate * = nullptr);
 
    ~QSmoothedAnimation();
    qreal to;
    qreal velocity;
    int userDuration;
 
    int maximumEasingTime;
    QQuickSmoothedAnimation::ReversingMode reversingMode;
 
    qreal initialVelocity;
    qreal trackVelocity;
 
    QQmlProperty target;
 
    int duration() const override;
    void restart();
    void init();
 
    void prepareForRestart();
    void clearTemplate() { animationTemplate = nullptr; }
 
protected:
    void updateCurrentTime(int) override;
    void updateState(QAbstractAnimationJob::State, QAbstractAnimationJob::State) override;
    void debugAnimation(QDebug d) const override;
 
private:
    qreal easeFollow(qreal);
    qreal initialValue;
 
    bool invert;
 
    int finalDuration;
 
    // Parameters for use in updateCurrentTime()
    qreal a;  // Acceleration
    qreal d;  // Deceleration
    qreal tf; // Total time
    qreal tp; // Time at which peak velocity occurs
    qreal td; // Time at which deceleration begins
    qreal vp; // Velocity at tp
    qreal sp; // Displacement at tp
    qreal sd; // Displacement at td
    qreal vi; // "Normalized" initialvelocity
    qreal s;  // Total s
 
    int lastTime;
    bool skipUpdate;
 
    bool recalc();
    void delayedStop();
    QSmoothedAnimationTimer *delayedStopTimer;
    QQuickSmoothedAnimationPrivate *animationTemplate;
};
 
class QQuickSmoothedAnimationPrivate : public QQuickPropertyAnimationPrivate
{
    Q_DECLARE_PUBLIC(QQuickSmoothedAnimation)
public:
    QQuickSmoothedAnimationPrivate();
    ~QQuickSmoothedAnimationPrivate();
    void updateRunningAnimations();
 
    QSmoothedAnimation *anim;
    QHash<QQmlProperty, QSmoothedAnimation*> activeAnimations;
};
 
QT_END_NAMESPACE
 
#endif // QQUICKSMOOTHEDANIMATION2_P_H