qquickanimatorjob_p.h

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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2016 Gunnar Sletta <gunnar@sletta.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QQUICKANIMATORJOB_P_H
#define QQUICKANIMATORJOB_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 <private/qabstractanimationjob_p.h>
#include <private/qquickanimator_p.h>
#include <private/qtquickglobal_p.h>
 
#include <QtQuick/qquickitem.h>
 
#include <QtCore/qeasingcurve.h>
#include <QtCore/qpointer.h>
 
QT_BEGIN_NAMESPACE
 
class QQuickAnimator;
class QQuickWindow;
class QQuickItem;
class QQuickAbstractAnimation;
 
class QQuickAnimatorController;
 
class QSGOpacityNode;
 
class Q_QUICK_EXPORT QQuickAnimatorProxyJob : public QObject, public QAbstractAnimationJob
{
    Q_OBJECT
 
public:
    QQuickAnimatorProxyJob(QAbstractAnimationJob *job, QQuickAbstractAnimation *animation);
    ~QQuickAnimatorProxyJob();
 
    int duration() const override { return m_duration; }
 
    const QSharedPointer<QAbstractAnimationJob> &job() const { return m_job; }
 
protected:
    void updateCurrentTime(int) override;
    void updateLoopCount(int) override;
    void updateState(QAbstractAnimationJob::State newState, QAbstractAnimationJob::State oldState) override;
    void debugAnimation(QDebug d) const override;
 
public Q_SLOTS:
    void windowChanged(QQuickWindow *window);
    void sceneGraphInitialized();
 
private:
    void syncBackCurrentValues();
    void readyToAnimate();
    void setWindow(QQuickWindow *window);
    static QObject *findAnimationContext(QQuickAbstractAnimation *);
 
    QPointer<QQuickAnimatorController> m_controller;
    QSharedPointer<QAbstractAnimationJob> m_job;
    int m_duration;
 
    enum InternalState {
        State_Starting, // Used when it should be running, but no we're still missing the controller.
        State_Running,
        State_Paused,
        State_Stopped
    };
 
    InternalState m_internalState;
};
 
class Q_QUICK_EXPORT QQuickAnimatorJob : public QAbstractAnimationJob
{
public:
    virtual void setTarget(QQuickItem *target);
    QQuickItem *target() const { return m_target; }
 
    void setFrom(qreal from) {
        m_from = from;
        boundValue();
    }
    qreal from() const { return m_from; }
 
    void setTo(qreal to) {
        m_to = to;
        boundValue();
    }
    qreal to() const { return m_to; }
 
    void setDuration(int duration) { m_duration = duration; }
    int duration() const override { return m_duration; }
 
    QEasingCurve easingCurve() const { return m_easing; }
    void setEasingCurve(const QEasingCurve &curve) { m_easing = curve; }
 
    // Initialize is called on the GUI thread just before it is started
    // and taken over on the render thread.
    virtual void initialize(QQuickAnimatorController *controller);
 
    // Called on the render thread during SG shutdown.
    virtual void invalidate() = 0;
 
    // Called on the GUI thread after a complete render thread animation job
    // has been completed to write back a given animator's result to the
    // source item.
    virtual void writeBack() = 0;
 
    // Called before the SG sync on the render thread. The GUI thread is
    // locked during this call.
    virtual void preSync() { }
 
    // Called after the SG sync on the render thread. The GUI thread is
    // locked during this call.
    virtual void postSync() { }
 
    // Called after animations have ticked on the render thread. No locks are
    // held at this time, so synchronization needs to be taken into account
    // if applicable.
    virtual void commit() { }
 
    bool isTransform() const { return m_isTransform; }
    bool isUniform() const { return m_isUniform; }
 
    qreal value() const;
 
    QQuickAnimatorController *controller() const { return m_controller; }
 
protected:
    QQuickAnimatorJob();
    void debugAnimation(QDebug d) const override;
 
    qreal progress(int time) const;
    void boundValue();
 
    QPointer<QQuickItem> m_target;
    QQuickAnimatorController *m_controller;
 
    qreal m_from;
    qreal m_to;
    qreal m_value;
 
    QEasingCurve m_easing;
 
    int m_duration;
 
    uint m_isTransform : 1;
    uint m_isUniform : 1;
};
 
class QQuickTransformAnimatorJob : public QQuickAnimatorJob
{
public:
 
    struct Helper
    {
        Helper()
            : ref(1)
            , node(nullptr)
            , ox(0)
            , oy(0)
            , dx(0)
            , dy(0)
            , scale(1)
            , rotation(0)
            , wasSynced(false)
            , wasChanged(false)
        {
        }
 
        void sync();
        void commit();
 
        int ref;
        QQuickItem *item;
        QSGTransformNode *node;
 
        // Origin
        float ox;
        float oy;
 
        float dx;
        float dy;
        float scale;
        float rotation;
 
        uint wasSynced : 1;
        uint wasChanged : 1;
    };
 
    ~QQuickTransformAnimatorJob();
 
    void commit() override;
    void preSync() override;
 
    void setTarget(QQuickItem *item) override;
 
protected:
    QQuickTransformAnimatorJob();
    void invalidate() override;
 
    Helper *m_helper;
};
 
class Q_QUICK_EXPORT QQuickScaleAnimatorJob : public QQuickTransformAnimatorJob
{
public:
    void updateCurrentTime(int time) override;
    void writeBack() override;
};
 
class Q_QUICK_EXPORT QQuickXAnimatorJob : public QQuickTransformAnimatorJob
{
public:
    void updateCurrentTime(int time) override;
    void writeBack() override;
};
 
class Q_QUICK_EXPORT QQuickYAnimatorJob : public QQuickTransformAnimatorJob
{
public:
    void updateCurrentTime(int time) override;
    void writeBack() override;
};
 
class Q_QUICK_EXPORT QQuickRotationAnimatorJob : public QQuickTransformAnimatorJob
{
public:
    QQuickRotationAnimatorJob();
 
    void updateCurrentTime(int time) override;
    void writeBack() override;
 
    void setDirection(QQuickRotationAnimator::RotationDirection direction) { m_direction = direction; }
    QQuickRotationAnimator::RotationDirection direction() const { return m_direction; }
 
private:
    QQuickRotationAnimator::RotationDirection m_direction;
};
 
class Q_QUICK_EXPORT QQuickOpacityAnimatorJob : public QQuickAnimatorJob
{
public:
    QQuickOpacityAnimatorJob();
 
    void invalidate() override;
    void updateCurrentTime(int time) override;
    void writeBack() override;
    void postSync() override;
 
private:
    QSGOpacityNode *m_opacityNode;
};
 
#if QT_CONFIG(quick_shadereffect)
class QQuickShaderEffect;
 
class Q_QUICK_EXPORT QQuickUniformAnimatorJob : public QQuickAnimatorJob
{
public:
    QQuickUniformAnimatorJob();
 
    void setTarget(QQuickItem *target) override;
 
    void setUniform(const QByteArray &uniform) { m_uniform = uniform; }
    QByteArray uniform() const { return m_uniform; }
 
    void updateCurrentTime(int time) override;
    void writeBack() override;
    void postSync() override;
 
    void invalidate() override;
 
private:
    QByteArray m_uniform;
    QPointer<QQuickShaderEffect> m_effect;
};
#endif
 
QT_END_NAMESPACE
 
#endif // QQUICKANIMATORJOB_P_H