qquickanimation.cpp

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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
 
#include "qquickanimation_p.h"
#include "qquickanimation_p_p.h"
 
#include "qquickanimatorjob_p.h"
 
#include <private/qquickstatechangescript_p.h>
#include <private/qqmlcontext_p.h>
 
#include <qqmlpropertyvaluesource.h>
#include <qqml.h>
#include <qqmlinfo.h>
#include <qqmlexpression.h>
#include <private/qqmlstringconverters_p.h>
#include <private/qqmlglobal_p.h>
#include <private/qqmlmetatype_p.h>
#include <private/qqmlvaluetype_p.h>
#include <private/qqmlproperty_p.h>
#include <private/qqmlengine_p.h>
 
#include <qvariant.h>
#include <qcolor.h>
#include <qfile.h>
#include "private/qparallelanimationgroupjob_p.h"
#include "private/qsequentialanimationgroupjob_p.h"
#include <QtCore/qset.h>
#include <QtCore/qrect.h>
#include <QtCore/qpoint.h>
#include <QtCore/qsize.h>
#include <QtCore/qmath.h>
 
QT_BEGIN_NAMESPACE
 
QQuickAbstractAnimation::QQuickAbstractAnimation(QObject *parent)
: QObject(*(new QQuickAbstractAnimationPrivate), parent)
{
}
 
QQuickAbstractAnimation::~QQuickAbstractAnimation()
{
    Q_D(QQuickAbstractAnimation);
    if (d->group)
        setGroup(nullptr);    //remove from group
    delete d->animationInstance;
}
 
QQuickAbstractAnimation::QQuickAbstractAnimation(QQuickAbstractAnimationPrivate &dd, QObject *parent)
: QObject(dd, parent)
{
}
 
QAbstractAnimationJob* QQuickAbstractAnimation::qtAnimation()
{
    Q_D(QQuickAbstractAnimation);
    return d->animationInstance;
}
 
bool QQuickAbstractAnimation::isRunning() const
{
    Q_D(const QQuickAbstractAnimation);
    return d->running;
}
 
// the behavior calls this function
void QQuickAbstractAnimation::notifyRunningChanged(bool running)
{
    Q_D(QQuickAbstractAnimation);
    if (d->disableUserControl && d->running != running) {
        d->running = running;
        emit runningChanged(running);
    }
}
 
//commence is called to start an animation when it is used as a
//simple animation, and not as part of a transition
void QQuickAbstractAnimationPrivate::commence()
{
    Q_Q(QQuickAbstractAnimation);
 
    QQuickStateActions actions;
    QQmlProperties properties;
 
    auto *newInstance = q->transition(actions, properties, QQuickAbstractAnimation::Forward);
    Q_ASSERT(newInstance != animationInstance);
    delete animationInstance;
    animationInstance = newInstance;
 
    if (animationInstance) {
        if (q->threadingModel() == QQuickAbstractAnimation::RenderThread)
            animationInstance = new QQuickAnimatorProxyJob(animationInstance, q);
        animationInstance->addAnimationChangeListener(this,
            QAbstractAnimationJob::Completion | QAbstractAnimationJob::CurrentLoop);
        emit q->started();
        animationInstance->start();
    }
}
 
QQmlProperty QQuickAbstractAnimationPrivate::createProperty(QObject *obj, const QString &str, QObject *infoObj, QString *errorMessage)
{
    QQmlProperty prop(obj, str, qmlContext(infoObj));
    if (!prop.isValid()) {
        const QString message = QQuickAbstractAnimation::tr("Cannot animate non-existent property \"%1\"").arg(str);
        if (errorMessage)
            *errorMessage = message;
        else
            qmlWarning(infoObj) << message;
        return QQmlProperty();
    } else if (!prop.isWritable()) {
        const QString message = QQuickAbstractAnimation::tr("Cannot animate read-only property \"%1\"").arg(str);
        if (errorMessage)
            *errorMessage = message;
        else
            qmlWarning(infoObj) << message;
        return QQmlProperty();
    }
    return prop;
}
 
void QQuickAbstractAnimationPrivate::animationGroupDirty()
{
    Q_ASSERT(group != nullptr);
    if (!componentComplete)
        return;
 
    auto *animGroupPriv = static_cast<QQuickAnimationGroupPrivate *>(QQuickAnimationGroupPrivate::get(group));
    if (animGroupPriv->running && !animGroupPriv->animationDirty) {
        animGroupPriv->animationDirty = true;
 
        if (animGroupPriv->animationInstance && group->currentTime() == 0) {
            // restart if the animation didn't proceed yet.
            animGroupPriv->restartFromCurrentLoop();
        }
    }
 
    // check the animationGroup is one of another animationGroup members
    if (animGroupPriv->group)
        animGroupPriv->animationGroupDirty();
}
 
void QQuickAbstractAnimation::setRunning(bool r)
{
    Q_D(QQuickAbstractAnimation);
    if (!d->componentComplete) {
        d->running = r;
        if (r == false)
            d->avoidPropertyValueSourceStart = true;
        else if (!d->needsDeferredSetRunning)
            d->needsDeferredSetRunning = true;
        return;
    }
 
    if (d->running == r)
        return;
 
    if (d->group || d->disableUserControl) {
        qmlWarning(this) << "setRunning() cannot be used on non-root animation nodes.";
        return;
    }
 
    d->running = r;
    if (d->running) {
        bool supressStart = false;
        if (d->alwaysRunToEnd && d->loopCount != 1
            && d->animationInstance && d->animationInstance->isRunning()) {
            //we've restarted before the final loop finished; restore proper loop count
            if (d->loopCount == -1)
                d->animationInstance->setLoopCount(d->loopCount);
            else
                d->animationInstance->setLoopCount(d->animationInstance->currentLoop() + d->loopCount);
            supressStart = true;    //we want the animation to continue, rather than restart
        }
        if (!supressStart)
            d->commence();
    } else {
        if (d->paused) {
            d->paused = false; //reset paused state to false when stopped
            emit pausedChanged(d->paused);
        }
 
        if (d->animationInstance) {
            if (d->alwaysRunToEnd) {
                if (d->loopCount != 1)
                    d->animationInstance->setLoopCount(d->animationInstance->currentLoop()+1);    //finish the current loop
            } else {
                d->animationInstance->stop();
                emit stopped();
            }
        }
    }
 
 
    if (r == d->running) {
        // This might happen if we start an animation with 0 duration: This will result in that
        // commence() will emit started(), and then when it starts it will call setCurrentTime(0),
        // (which is both start and end time of the animation), so it will also end up calling
        // setRunning(false) (recursively) and stop the animation.
        // Therefore, the state of d->running will in that case be different than r if we are back in
        // the root stack frame of the recursive calls to setRunning()
        emit runningChanged(d->running);
    }
}
 
bool QQuickAbstractAnimation::isPaused() const
{
    Q_D(const QQuickAbstractAnimation);
    Q_ASSERT((d->paused && d->running) || !d->paused);
    return d->paused;
}
 
void QQuickAbstractAnimation::setPaused(bool p)
{
    Q_D(QQuickAbstractAnimation);
    if (d->paused == p)
        return;
 
    if (!d->running) {
        qmlWarning(this) << "setPaused() cannot be used when animation isn't running.";
        return;
    }
 
    if (d->group || d->disableUserControl) {
        qmlWarning(this) << "setPaused() cannot be used on non-root animation nodes.";
        return;
    }
 
    d->paused = p;
 
    if (!d->componentComplete || !d->animationInstance)
        return;
 
    if (d->paused)
        d->animationInstance->pause();
    else
        d->animationInstance->resume();
 
    emit pausedChanged(d->paused);
}
 
void QQuickAbstractAnimation::classBegin()
{
    Q_D(QQuickAbstractAnimation);
    d->componentComplete = false;
}
 
void QQuickAbstractAnimation::componentComplete()
{
    Q_D(QQuickAbstractAnimation);
    d->componentComplete = true;
    if (d->needsDeferredSetRunning) {
        if (d->running) {
            d->running = false;
            setRunning(true);
        }
        if (d->paused) {
            d->paused = false;
            setPaused(true);
        }
    }
}
 
bool QQuickAbstractAnimation::alwaysRunToEnd() const
{
    Q_D(const QQuickAbstractAnimation);
    return d->alwaysRunToEnd;
}
 
void QQuickAbstractAnimation::setAlwaysRunToEnd(bool f)
{
    Q_D(QQuickAbstractAnimation);
    if (d->alwaysRunToEnd == f)
        return;
 
    d->alwaysRunToEnd = f;
    emit alwaysRunToEndChanged(f);
}
 
int QQuickAbstractAnimation::loops() const
{
    Q_D(const QQuickAbstractAnimation);
    return d->loopCount;
}
 
void QQuickAbstractAnimation::setLoops(int loops)
{
    Q_D(QQuickAbstractAnimation);
    if (loops < 0)
        loops = -1;
 
    if (loops == d->loopCount)
        return;
 
    d->loopCount = loops;
    emit loopCountChanged(loops);
}
 
int QQuickAbstractAnimation::duration() const
{
    Q_D(const QQuickAbstractAnimation);
    return d->animationInstance ? d->animationInstance->duration() : 0;
}
 
int QQuickAbstractAnimation::currentTime()
{
    Q_D(QQuickAbstractAnimation);
    return d->animationInstance ? d->animationInstance->currentLoopTime() : 0;
}
 
void QQuickAbstractAnimation::setCurrentTime(int time)
{
    Q_D(QQuickAbstractAnimation);
    if (d->animationInstance)
        d->animationInstance->setCurrentTime(time);
    //TODO save value for start?
}
 
QQuickAnimationGroup *QQuickAbstractAnimation::group() const
{
    Q_D(const QQuickAbstractAnimation);
    return d->group;
}
 
void QQuickAbstractAnimation::setGroup(QQuickAnimationGroup *g, int index)
{
    Q_D(QQuickAbstractAnimation);
    if (d->group == g)
        return;
    if (d->group)
        d->group->d_func()->animations.removeAll(this);
 
    d->group = g;
 
    if (d->group && !d->group->d_func()->animations.contains(this)) {
        if (index >= 0)
            d->group->d_func()->animations.insert(index, this);
        else
            d->group->d_func()->animations.append(this);
    }
}
 
void QQuickAbstractAnimation::start()
{
    setRunning(true);
}
 
void QQuickAbstractAnimation::pause()
{
    setPaused(true);
}
 
void QQuickAbstractAnimation::resume()
{
    setPaused(false);
}
 
void QQuickAbstractAnimation::stop()
{
    setRunning(false);
}
 
void QQuickAbstractAnimation::restart()
{
    stop();
    start();
}
 
void QQuickAbstractAnimation::complete()
{
    Q_D(QQuickAbstractAnimation);
    if (isRunning() && d->animationInstance) {
         d->animationInstance->setCurrentTime(d->animationInstance->duration());
    }
}
 
void QQuickAbstractAnimation::setTarget(const QQmlProperty &p)
{
    Q_D(QQuickAbstractAnimation);
    d->defaultProperty = p;
 
    if (!d->avoidPropertyValueSourceStart)
        setRunning(true);
}
 
/*
    we rely on setTarget only being called when used as a value source
    so this function allows us to do the same thing as setTarget without
    that assumption
*/
void QQuickAbstractAnimation::setDefaultTarget(const QQmlProperty &p)
{
    Q_D(QQuickAbstractAnimation);
    d->defaultProperty = p;
}
 
/*
    don't allow start/stop/pause/resume to be manually invoked,
    because something else (like a Behavior) already has control
    over the animation.
*/
void QQuickAbstractAnimation::setDisableUserControl()
{
    Q_D(QQuickAbstractAnimation);
    d->disableUserControl = true;
}
 
void QQuickAbstractAnimation::setEnableUserControl()
{
    Q_D(QQuickAbstractAnimation);
    d->disableUserControl = false;
 
}
 
bool QQuickAbstractAnimation::userControlDisabled() const
{
    Q_D(const QQuickAbstractAnimation);
    return d->disableUserControl;
}
 
QAbstractAnimationJob* QQuickAbstractAnimation::initInstance(QAbstractAnimationJob *animation)
{
    Q_D(QQuickAbstractAnimation);
    animation->setLoopCount(d->loopCount);
    return animation;
}
 
QAbstractAnimationJob* QQuickAbstractAnimation::transition(QQuickStateActions &actions,
                                      QQmlProperties &modified,
                                      TransitionDirection direction,
                                      QObject *defaultTarget)
{
    Q_UNUSED(actions);
    Q_UNUSED(modified);
    Q_UNUSED(direction);
    Q_UNUSED(defaultTarget);
    return nullptr;
}
 
void QQuickAbstractAnimationPrivate::animationFinished(QAbstractAnimationJob*)
{
    Q_Q(QQuickAbstractAnimation);
    q->setRunning(false);
    if (alwaysRunToEnd) {
        emit q->stopped();
        //restore the proper loopCount for the next run
        if (loopCount != 1)
            animationInstance->setLoopCount(loopCount);
    }
    emit q->finished();
}
 
QQuickAbstractAnimation::ThreadingModel QQuickAbstractAnimation::threadingModel() const
{
    return GuiThread;
}
 
QQuickPauseAnimation::QQuickPauseAnimation(QObject *parent)
: QQuickAbstractAnimation(*(new QQuickPauseAnimationPrivate), parent)
{
}
 
QQuickPauseAnimation::~QQuickPauseAnimation()
{
}
 
int QQuickPauseAnimation::duration() const
{
    Q_D(const QQuickPauseAnimation);
    return d->duration;
}
 
void QQuickPauseAnimation::setDuration(int duration)
{
    if (duration < 0) {
        qmlWarning(this) << tr("Cannot set a duration of < 0");
        return;
    }
 
    Q_D(QQuickPauseAnimation);
    if (d->duration == duration)
        return;
    d->duration = duration;
    emit durationChanged(duration);
    if (d->group)
        d->animationGroupDirty();
}
 
QAbstractAnimationJob* QQuickPauseAnimation::transition(QQuickStateActions &actions,
                                    QQmlProperties &modified,
                                    TransitionDirection direction,
                                    QObject *defaultTarget)
{
    Q_D(QQuickPauseAnimation);
    Q_UNUSED(actions);
    Q_UNUSED(modified);
    Q_UNUSED(direction);
    Q_UNUSED(defaultTarget);
 
    return initInstance(new QPauseAnimationJob(d->duration));
}
 
QQuickColorAnimation::QQuickColorAnimation(QObject *parent)
: QQuickPropertyAnimation(parent)
{
    Q_D(QQuickPropertyAnimation);
    d->interpolatorType = QMetaType::QColor;
    d->defaultToInterpolatorType = true;
    d->interpolator = QVariantAnimationPrivate::getInterpolator(d->interpolatorType);
}
 
QQuickColorAnimation::~QQuickColorAnimation()
{
}
 
QColor QQuickColorAnimation::from() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->from.value<QColor>();
}
 
void QQuickColorAnimation::setFrom(const QColor &f)
{
    QQuickPropertyAnimation::setFrom(f);
}
 
QColor QQuickColorAnimation::to() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->to.value<QColor>();
}
 
void QQuickColorAnimation::setTo(const QColor &t)
{
    QQuickPropertyAnimation::setTo(t);
}
 
QActionAnimation::QActionAnimation()
    : QAbstractAnimationJob(), animAction(nullptr)
{
}
 
QActionAnimation::QActionAnimation(QAbstractAnimationAction *action)
    : QAbstractAnimationJob(), animAction(action)
{
}
 
QActionAnimation::~QActionAnimation()
{
    delete animAction;
}
 
int QActionAnimation::duration() const
{
    return 0;
}
 
void QActionAnimation::setAnimAction(QAbstractAnimationAction *action)
{
    if (isRunning())
        stop();
    animAction = action;
}
 
void QActionAnimation::updateCurrentTime(int)
{
}
 
void QActionAnimation::updateState(State newState, State oldState)
{
    Q_UNUSED(oldState);
 
    if (newState == Running) {
        if (animAction) {
            animAction->doAction();
        }
    }
}
 
void QActionAnimation::debugAnimation(QDebug d) const
{
    d << "ActionAnimation(" << Qt::hex << (const void *) this << Qt::dec << ")";
 
    if (animAction) {
        int indentLevel = 1;
        const QAbstractAnimationJob *job = this;
        while ((job = job->group()))
            ++indentLevel;
        animAction->debugAction(d, indentLevel);
    }
}
 
QQuickScriptAction::QQuickScriptAction(QObject *parent)
    :QQuickAbstractAnimation(*(new QQuickScriptActionPrivate), parent)
{
}
 
QQuickScriptAction::~QQuickScriptAction()
{
}
 
QQuickScriptActionPrivate::QQuickScriptActionPrivate()
    : QQuickAbstractAnimationPrivate(), hasRunScriptScript(false), reversing(false){}
 
QQmlScriptString QQuickScriptAction::script() const
{
    Q_D(const QQuickScriptAction);
    return d->script;
}
 
void QQuickScriptAction::setScript(const QQmlScriptString &script)
{
    Q_D(QQuickScriptAction);
    d->script = script;
}
 
QString QQuickScriptAction::stateChangeScriptName() const
{
    Q_D(const QQuickScriptAction);
    return d->name;
}
 
void QQuickScriptAction::setStateChangeScriptName(const QString &name)
{
    Q_D(QQuickScriptAction);
    d->name = name;
}
 
QAbstractAnimationAction* QQuickScriptActionPrivate::createAction()
{
    return new Proxy(this);
}
 
void QQuickScriptActionPrivate::debugAction(QDebug d, int indentLevel) const
{
    QQmlScriptString scriptStr = hasRunScriptScript ? runScriptScript : script;
 
    if (!scriptStr.isEmpty()) {
        QQmlExpression expr(scriptStr);
 
        QByteArray ind(indentLevel, u' ');
        QString exprStr = expr.expression();
        int endOfFirstLine = exprStr.indexOf(u'\n');
        d << "\n" << ind.constData() << QStringView{exprStr}.left(endOfFirstLine);
        if (endOfFirstLine != -1 && endOfFirstLine < exprStr.size())
            d << "...";
    }
}
 
void QQuickScriptActionPrivate::execute()
{
    Q_Q(QQuickScriptAction);
    if (hasRunScriptScript && reversing)
        return;
 
    QQmlScriptString scriptStr = hasRunScriptScript ? runScriptScript : script;
 
    if (!scriptStr.isEmpty()) {
        QQmlExpression expr(scriptStr);
        expr.evaluate();
        if (expr.hasError())
            qmlWarning(q) << expr.error();
    }
}
 
QAbstractAnimationJob* QQuickScriptAction::transition(QQuickStateActions &actions,
                                    QQmlProperties &modified,
                                    TransitionDirection direction,
                                    QObject *defaultTarget)
{
    Q_D(QQuickScriptAction);
    Q_UNUSED(modified);
    Q_UNUSED(defaultTarget);
 
    d->hasRunScriptScript = false;
    d->reversing = (direction == Backward);
    if (!d->name.isEmpty()) {
        for (int ii = 0; ii < actions.size(); ++ii) {
            QQuickStateAction &action = actions[ii];
 
            if (action.event && action.event->type() == QQuickStateActionEvent::Script
                && static_cast<QQuickStateChangeScript*>(action.event)->name() == d->name) {
                d->runScriptScript = static_cast<QQuickStateChangeScript*>(action.event)->script();
                d->hasRunScriptScript = true;
                action.actionDone = true;
                break;  //only match one (names should be unique)
            }
        }
    }
    return initInstance(new QActionAnimation(d->createAction()));
}
 
QQuickPropertyAction::QQuickPropertyAction(QObject *parent)
: QQuickAbstractAnimation(*(new QQuickPropertyActionPrivate), parent)
{
}
 
QQuickPropertyAction::~QQuickPropertyAction()
{
}
 
QObject *QQuickPropertyAction::target() const
{
    Q_D(const QQuickPropertyAction);
    return d->target;
}
 
void QQuickPropertyAction::setTargetObject(QObject *o)
{
    Q_D(QQuickPropertyAction);
    if (d->target == o)
        return;
    d->target = o;
    emit targetChanged();
    if (d->group)
        d->animationGroupDirty();
}
 
QString QQuickPropertyAction::property() const
{
    Q_D(const QQuickPropertyAction);
    return d->propertyName;
}
 
void QQuickPropertyAction::setProperty(const QString &n)
{
    Q_D(QQuickPropertyAction);
    if (d->propertyName == n)
        return;
    d->propertyName = n;
    emit propertyChanged();
    if (d->group)
        d->animationGroupDirty();
}
 
QString QQuickPropertyAction::properties() const
{
    Q_D(const QQuickPropertyAction);
    return d->properties;
}
 
void QQuickPropertyAction::setProperties(const QString &p)
{
    Q_D(QQuickPropertyAction);
    if (d->properties == p)
        return;
    d->properties = p;
    emit propertiesChanged(p);
    if (d->group)
        d->animationGroupDirty();
}
 
QQmlListProperty<QObject> QQuickPropertyAction::targets()
{
    Q_D(QQuickPropertyAction);
    return QQmlListProperty<QObject>(this, &(d->targets));
}
 
QQmlListProperty<QObject> QQuickPropertyAction::exclude()
{
    Q_D(QQuickPropertyAction);
    return QQmlListProperty<QObject>(this, &(d->exclude));
}
 
QVariant QQuickPropertyAction::value() const
{
    Q_D(const QQuickPropertyAction);
    return d->value;
}
 
void QQuickPropertyAction::setValue(const QVariant &v)
{
    Q_D(QQuickPropertyAction);
    if (!d->value.isValid() || d->value != v) {
        d->value = v;
        emit valueChanged(v);
    }
}
 
QAbstractAnimationJob* QQuickPropertyAction::transition(QQuickStateActions &actions,
                                      QQmlProperties &modified,
                                      TransitionDirection direction,
                                      QObject *defaultTarget)
{
    Q_D(QQuickPropertyAction);
    Q_UNUSED(direction);
 
    struct QQuickSetPropertyAnimationAction : public QAbstractAnimationAction
    {
        QQuickStateActions actions;
        void doAction() override
        {
            for (int ii = 0; ii < actions.size(); ++ii) {
                const QQuickStateAction &action = actions.at(ii);
                QQmlPropertyPrivate::write(action.property, action.toValue, QQmlPropertyData::BypassInterceptor | QQmlPropertyData::DontRemoveBinding);
            }
        }
        void debugAction(QDebug d, int indentLevel) const override {
            QByteArray ind(indentLevel, ' ');
            for (int ii = 0; ii < actions.size(); ++ii) {
                const QQuickStateAction &action = actions.at(ii);
                d << "\n" << ind.constData() << "target:" << action.property.object() << "property:" << action.property.name()
                  << "value:" << action.toValue;
            }
        }
    };
 
    QStringList props = d->properties.isEmpty() ? QStringList() : d->properties.split(QLatin1Char(','));
    for (int ii = 0; ii < props.size(); ++ii)
        props[ii] = props.at(ii).trimmed();
    if (!d->propertyName.isEmpty())
        props << d->propertyName;
 
    QList<QObject*> targets = d->targets;
    if (d->target)
        targets.append(d->target);
 
    bool hasSelectors = !props.isEmpty() || !targets.isEmpty() || !d->exclude.isEmpty();
 
    if (d->defaultProperty.isValid() && !hasSelectors) {
        props << d->defaultProperty.name();
        targets << d->defaultProperty.object();
    }
 
    if (defaultTarget && targets.isEmpty())
        targets << defaultTarget;
 
    QQuickSetPropertyAnimationAction *data = new QQuickSetPropertyAnimationAction;
 
    bool hasExplicit = false;
    //an explicit animation has been specified
    if (d->value.isValid()) {
        for (int i = 0; i < props.size(); ++i) {
            for (int j = 0; j < targets.size(); ++j) {
                QQuickStateAction myAction;
                myAction.property = d->createProperty(targets.at(j), props.at(i), this);
                if (myAction.property.isValid()) {
                    myAction.toValue = d->value;
                    QQuickPropertyAnimationPrivate::convertVariant(myAction.toValue, myAction.property.propertyMetaType());
                    data->actions << myAction;
                    hasExplicit = true;
                    for (int ii = 0; ii < actions.size(); ++ii) {
                        QQuickStateAction &action = actions[ii];
                        if (action.property.object() == myAction.property.object() &&
                            myAction.property.name() == action.property.name()) {
                            modified << action.property;
                            break;  //### any chance there could be multiples?
                        }
                    }
                }
            }
        }
    }
 
    if (!hasExplicit)
    for (int ii = 0; ii < actions.size(); ++ii) {
        QQuickStateAction &action = actions[ii];
 
        QObject *obj = action.property.object();
        QString propertyName = action.property.name();
        QObject *sObj = action.specifiedObject;
        QString sPropertyName = action.specifiedProperty;
        bool same = (obj == sObj);
 
        if ((targets.isEmpty() || targets.contains(obj) || (!same && targets.contains(sObj))) &&
           (!d->exclude.contains(obj)) && (same || (!d->exclude.contains(sObj))) &&
           (props.contains(propertyName) || (!same && props.contains(sPropertyName)))) {
            QQuickStateAction myAction = action;
 
            if (d->value.isValid())
                myAction.toValue = d->value;
            QQuickPropertyAnimationPrivate::convertVariant(myAction.toValue, myAction.property.propertyMetaType());
 
            modified << action.property;
            data->actions << myAction;
            action.fromValue = myAction.toValue;
        }
    }
 
    QActionAnimation *action = new QActionAnimation;
    if (data->actions.size()) {
        action->setAnimAction(data);
    } else {
        delete data;
    }
    return initInstance(action);
}
 
QQuickNumberAnimation::QQuickNumberAnimation(QObject *parent)
: QQuickPropertyAnimation(parent)
{
    init();
}
 
QQuickNumberAnimation::QQuickNumberAnimation(QQuickPropertyAnimationPrivate &dd, QObject *parent)
: QQuickPropertyAnimation(dd, parent)
{
    init();
}
 
QQuickNumberAnimation::~QQuickNumberAnimation()
{
}
 
void QQuickNumberAnimation::init()
{
    Q_D(QQuickPropertyAnimation);
    d->interpolatorType = QMetaType::QReal;
    d->interpolator = QVariantAnimationPrivate::getInterpolator(d->interpolatorType);
}
 
qreal QQuickNumberAnimation::from() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->from.toReal();
}
 
void QQuickNumberAnimation::setFrom(qreal f)
{
    QQuickPropertyAnimation::setFrom(f);
}
 
qreal QQuickNumberAnimation::to() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->to.toReal();
}
 
void QQuickNumberAnimation::setTo(qreal t)
{
    QQuickPropertyAnimation::setTo(t);
}
 
 
 
QQuickVector3dAnimation::QQuickVector3dAnimation(QObject *parent)
: QQuickPropertyAnimation(parent)
{
    Q_D(QQuickPropertyAnimation);
    d->interpolatorType = QMetaType::QVector3D;
    d->defaultToInterpolatorType = true;
    d->interpolator = QVariantAnimationPrivate::getInterpolator(d->interpolatorType);
}
 
QQuickVector3dAnimation::~QQuickVector3dAnimation()
{
}
 
QVector3D QQuickVector3dAnimation::from() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->from.value<QVector3D>();
}
 
void QQuickVector3dAnimation::setFrom(QVector3D f)
{
    QQuickPropertyAnimation::setFrom(f);
}
 
QVector3D QQuickVector3dAnimation::to() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->to.value<QVector3D>();
}
 
void QQuickVector3dAnimation::setTo(QVector3D t)
{
    QQuickPropertyAnimation::setTo(t);
}
 
 
 
QVariant _q_interpolateShortestRotation(qreal &f, qreal &t, qreal progress)
{
    qreal newt = t;
    qreal diff = t-f;
    while(diff > 180.0){
        newt -= 360.0;
        diff -= 360.0;
    }
    while(diff < -180.0){
        newt += 360.0;
        diff += 360.0;
    }
    return QVariant(f + (newt - f) * progress);
}
 
QVariant _q_interpolateClockwiseRotation(qreal &f, qreal &t, qreal progress)
{
    qreal newt = t;
    qreal diff = t-f;
    while(diff < 0.0){
        newt += 360.0;
        diff += 360.0;
    }
    return QVariant(f + (newt - f) * progress);
}
 
QVariant _q_interpolateCounterclockwiseRotation(qreal &f, qreal &t, qreal progress)
{
    qreal newt = t;
    qreal diff = t-f;
    while(diff > 0.0){
        newt -= 360.0;
        diff -= 360.0;
    }
    return QVariant(f + (newt - f) * progress);
}
 
QQuickRotationAnimation::QQuickRotationAnimation(QObject *parent)
: QQuickPropertyAnimation(*(new QQuickRotationAnimationPrivate), parent)
{
    Q_D(QQuickRotationAnimation);
    d->interpolatorType = QMetaType::QReal;
    d->interpolator = QVariantAnimationPrivate::getInterpolator(d->interpolatorType);
    d->defaultProperties = QLatin1String("rotation,angle");
}
 
QQuickRotationAnimation::~QQuickRotationAnimation()
{
}
 
qreal QQuickRotationAnimation::from() const
{
    Q_D(const QQuickRotationAnimation);
    return d->from.toReal();
}
 
void QQuickRotationAnimation::setFrom(qreal f)
{
    QQuickPropertyAnimation::setFrom(f);
}
 
qreal QQuickRotationAnimation::to() const
{
    Q_D(const QQuickRotationAnimation);
    return d->to.toReal();
}
 
void QQuickRotationAnimation::setTo(qreal t)
{
    QQuickPropertyAnimation::setTo(t);
}
 
QQuickRotationAnimation::RotationDirection QQuickRotationAnimation::direction() const
{
    Q_D(const QQuickRotationAnimation);
    return d->direction;
}
 
void QQuickRotationAnimation::setDirection(QQuickRotationAnimation::RotationDirection direction)
{
    Q_D(QQuickRotationAnimation);
    if (d->direction == direction)
        return;
 
    d->direction = direction;
    switch(d->direction) {
    case Clockwise:
        d->interpolator = reinterpret_cast<QVariantAnimation::Interpolator>(reinterpret_cast<void *>(&_q_interpolateClockwiseRotation));
        break;
    case Counterclockwise:
        d->interpolator = reinterpret_cast<QVariantAnimation::Interpolator>(reinterpret_cast<void *>(&_q_interpolateCounterclockwiseRotation));
        break;
    case Shortest:
        d->interpolator = reinterpret_cast<QVariantAnimation::Interpolator>(reinterpret_cast<void *>(&_q_interpolateShortestRotation));
        break;
    default:
        d->interpolator = QVariantAnimationPrivate::getInterpolator(d->interpolatorType);
        break;
    }
    emit directionChanged();
}
 
 
 
QQuickAnimationGroup::QQuickAnimationGroup(QObject *parent)
: QQuickAbstractAnimation(*(new QQuickAnimationGroupPrivate), parent)
{
}
 
QQuickAnimationGroup::QQuickAnimationGroup(QQuickAnimationGroupPrivate &dd, QObject *parent)
    : QQuickAbstractAnimation(dd, parent)
{
}
 
void QQuickAnimationGroupPrivate::append_animation(QQmlListProperty<QQuickAbstractAnimation> *list, QQuickAbstractAnimation *a)
{
    QQuickAnimationGroup *q = qmlobject_cast<QQuickAnimationGroup *>(list->object);
    if (q && a)
        a->setGroup(q);
}
 
QQuickAbstractAnimation *QQuickAnimationGroupPrivate::at_animation(QQmlListProperty<QQuickAbstractAnimation> *list, qsizetype index)
{
    if (auto q = qmlobject_cast<QQuickAnimationGroup *>(list->object))
        return q->d_func()->animations.at(index);
    return nullptr;
}
 
qsizetype QQuickAnimationGroupPrivate::count_animation(QQmlListProperty<QQuickAbstractAnimation> *list)
{
    if (auto q = qmlobject_cast<QQuickAnimationGroup *>(list->object))
        return q->d_func()->animations.size();
    return 0;
}
 
void QQuickAnimationGroupPrivate::clear_animation(QQmlListProperty<QQuickAbstractAnimation> *list)
{
    QQuickAnimationGroup *q = qobject_cast<QQuickAnimationGroup *>(list->object);
    if (q) {
        while (q->d_func()->animations.size()) {
            QQuickAbstractAnimation *firstAnim = q->d_func()->animations.at(0);
            firstAnim->setGroup(nullptr);
        }
    }
}
 
void QQuickAnimationGroupPrivate::replace_animation(QQmlListProperty<QQuickAbstractAnimation> *list,
                                                    qsizetype i, QQuickAbstractAnimation *a)
{
    if (auto *q = qmlobject_cast<QQuickAnimationGroup *>(list->object)) {
        if (QQuickAbstractAnimation *anim = q->d_func()->animations.at(i))
            anim->setGroup(nullptr);
        if (a)
            a->setGroup(q, i);
    }
}
 
void QQuickAnimationGroupPrivate::removeLast_animation(QQmlListProperty<QQuickAbstractAnimation> *list)
{
    if (auto *q = qobject_cast<QQuickAnimationGroup *>(list->object))
        q->d_func()->animations.last()->setGroup(nullptr);
}
 
void QQuickAnimationGroupPrivate::restartFromCurrentLoop()
{
    Q_Q(QQuickAnimationGroup);
    if (!animationDirty)
        return;
 
    animationDirty = false;
 
    Q_ASSERT(animationInstance);
    const int currentLoop = animationInstance->currentLoop();
 
    QSignalBlocker signalBlocker(q);
    q->stop();
    q->start();
 
    Q_ASSERT(animationInstance);
    // Restarting adjusts animationInstance's loopCount
    // Since we just want to start it from this loop,
    // it will be restored again.
    if (loopCount != -1)
        animationInstance->setLoopCount(loopCount - currentLoop);
}
 
void QQuickAnimationGroupPrivate::animationCurrentLoopChanged(QAbstractAnimationJob *)
{
    if (!animationDirty)
        return;
    restartFromCurrentLoop();
}
 
QQuickAnimationGroup::~QQuickAnimationGroup()
{
    Q_D(QQuickAnimationGroup);
    for (int i = 0; i < d->animations.size(); ++i)
        d->animations.at(i)->d_func()->group = nullptr;
    d->animations.clear();
}
 
QQmlListProperty<QQuickAbstractAnimation> QQuickAnimationGroup::animations()
{
    Q_D(QQuickAnimationGroup);
    return QQmlListProperty<QQuickAbstractAnimation>(
                this, &(d->animations),
                &QQuickAnimationGroupPrivate::append_animation,
                &QQuickAnimationGroupPrivate::count_animation,
                &QQuickAnimationGroupPrivate::at_animation,
                &QQuickAnimationGroupPrivate::clear_animation,
                &QQuickAnimationGroupPrivate::replace_animation,
                &QQuickAnimationGroupPrivate::removeLast_animation);
}
 
QQuickSequentialAnimation::QQuickSequentialAnimation(QObject *parent) :
    QQuickAnimationGroup(parent)
{
}
 
QQuickSequentialAnimation::~QQuickSequentialAnimation()
{
}
 
QQuickAbstractAnimation::ThreadingModel QQuickSequentialAnimation::threadingModel() const
{
    Q_D(const QQuickAnimationGroup);
 
    ThreadingModel style = AnyThread;
    for (int i=0; i<d->animations.size(); ++i) {
        ThreadingModel ces = d->animations.at(i)->threadingModel();
        if (ces == GuiThread)
            return GuiThread;
        else if (ces == RenderThread)
            style = RenderThread;
    }
    return style;
}
 
QAbstractAnimationJob* QQuickSequentialAnimation::transition(QQuickStateActions &actions,
                                    QQmlProperties &modified,
                                    TransitionDirection direction,
                                    QObject *defaultTarget)
{
    Q_D(QQuickAnimationGroup);
 
    QSequentialAnimationGroupJob *ag = new QSequentialAnimationGroupJob;
 
    int inc = 1;
    int from = 0;
    if (direction == Backward) {
        inc = -1;
        from = d->animations.size() - 1;
    }
 
    ThreadingModel execution = threadingModel();
 
    bool valid = d->defaultProperty.isValid();
    QAbstractAnimationJob* anim;
    for (int ii = from; ii < d->animations.size() && ii >= 0; ii += inc) {
        if (valid)
            d->animations.at(ii)->setDefaultTarget(d->defaultProperty);
        anim = d->animations.at(ii)->transition(actions, modified, direction, defaultTarget);
        if (anim) {
            if (d->animations.at(ii)->threadingModel() == RenderThread && execution != RenderThread)
                anim = new QQuickAnimatorProxyJob(anim, this);
            inc == -1 ? ag->prependAnimation(anim) : ag->appendAnimation(anim);
        }
    }
 
    return initInstance(ag);
}
 
 
 
QQuickParallelAnimation::QQuickParallelAnimation(QObject *parent) :
    QQuickAnimationGroup(parent)
{
}
 
QQuickParallelAnimation::~QQuickParallelAnimation()
{
}
 
QQuickAbstractAnimation::ThreadingModel QQuickParallelAnimation::threadingModel() const
{
    Q_D(const QQuickAnimationGroup);
 
    ThreadingModel style = AnyThread;
    for (int i=0; i<d->animations.size(); ++i) {
        ThreadingModel ces = d->animations.at(i)->threadingModel();
        if (ces == GuiThread)
            return GuiThread;
        else if (ces == RenderThread)
            style = RenderThread;
    }
    return style;
}
 
 
 
QAbstractAnimationJob* QQuickParallelAnimation::transition(QQuickStateActions &actions,
                                      QQmlProperties &modified,
                                      TransitionDirection direction,
                                      QObject *defaultTarget)
{
    Q_D(QQuickAnimationGroup);
    QParallelAnimationGroupJob *ag = new QParallelAnimationGroupJob;
 
    ThreadingModel style = threadingModel();
 
    bool valid = d->defaultProperty.isValid();
    QAbstractAnimationJob* anim;
    for (int ii = 0; ii < d->animations.size(); ++ii) {
        if (valid)
            d->animations.at(ii)->setDefaultTarget(d->defaultProperty);
        anim = d->animations.at(ii)->transition(actions, modified, direction, defaultTarget);
        if (anim) {
            if (d->animations.at(ii)->threadingModel() == RenderThread && style != RenderThread)
                anim = new QQuickAnimatorProxyJob(anim, this);
            ag->appendAnimation(anim);
        }
    }
    return initInstance(ag);
}
 
void QQuickPropertyAnimationPrivate::animationCurrentLoopChanged(QAbstractAnimationJob *)
{
    Q_Q(QQuickPropertyAnimation);
    // We listen to current loop changes in order to restart the animation if e.g. from, to, etc.
    // are modified while the animation is running.
    // Restarting is a bit drastic but there is a lot of stuff that commence() (and therefore
    // QQuickPropertyAnimation::transition() and QQuickPropertyAnimation::createTransitionActions())
    // does, so we want to avoid trying to take a shortcut and just restart the whole thing.
    if (ourPropertiesDirty) {
        ourPropertiesDirty = false;
 
        // We use animationInstance everywhere for simplicity - if we defined the job parameter
        // it would be deleted as soon as we call stop().
        Q_ASSERT(animationInstance);
        const int currentLoop = animationInstance->currentLoop();
 
        QSignalBlocker signalBlocker(q);
        q->stop();
        q->start();
 
        Q_ASSERT(animationInstance);
        // We multiply it ourselves here instead of just saving currentTime(), because otherwise
        // it seems to accumulate, and changing our properties while the animation is running
        // can result in the animation starting mid-way through a loop, which is not we want;
        // we want it to start from the beginning.
        animationInstance->setCurrentTime(currentLoop * animationInstance->duration());
    }
}
 
//convert a variant from string type to another animatable type
void QQuickPropertyAnimationPrivate::convertVariant(QVariant &variant, QMetaType type)
{
    if (variant.userType() != QMetaType::QString) {
        variant.convert(type);
        return;
    }
 
    switch (type.id()) {
    case QMetaType::QRect:
    case QMetaType::QRectF:
    case QMetaType::QPoint:
    case QMetaType::QPointF:
    case QMetaType::QSize:
    case QMetaType::QSizeF:
    case QMetaType::QColor:
    case QMetaType::QVector3D:
        {
        bool ok = false;
        variant = QQmlStringConverters::variantFromString(variant.toString(), type, &ok);
        }
        break;
    default:
        if (QQmlMetaType::isValueType(type)) {
            variant.convert(QMetaType(type));
        }
        break;
    }
}
 
QQuickBulkValueAnimator::QQuickBulkValueAnimator()
    : QAbstractAnimationJob(), animValue(nullptr), fromIsSourced(nullptr), m_duration(250)
{
}
 
QQuickBulkValueAnimator::~QQuickBulkValueAnimator()
{
    delete animValue;
}
 
void QQuickBulkValueAnimator::setAnimValue(QQuickBulkValueUpdater *value)
{
    if (isRunning())
        stop();
    animValue = value;
}
 
void QQuickBulkValueAnimator::updateCurrentTime(int currentTime)
{
    if (isStopped())
        return;
 
    const qreal progress = easing.valueForProgress(((m_duration == 0) ? qreal(1) : qreal(currentTime) / qreal(m_duration)));
 
    if (animValue)
        animValue->setValue(progress);
}
 
void QQuickBulkValueAnimator::topLevelAnimationLoopChanged()
{
    // Check for new "from" value only when animation has one loop.
    // Otherwise use the initial "from" value for every iteration.
    if (m_loopCount == 1 && fromIsSourced)
        *fromIsSourced = false;
    QAbstractAnimationJob::topLevelAnimationLoopChanged();
}
 
void QQuickBulkValueAnimator::debugAnimation(QDebug d) const
{
    d << "BulkValueAnimation(" << Qt::hex << (const void *) this << Qt::dec << ")" << "duration:" << duration();
 
    if (animValue) {
        int indentLevel = 1;
        const QAbstractAnimationJob *job = this;
        while ((job = job->group()))
            ++indentLevel;
        animValue->debugUpdater(d, indentLevel);
    }
}
 
QQuickPropertyAnimation::QQuickPropertyAnimation(QObject *parent)
: QQuickAbstractAnimation(*(new QQuickPropertyAnimationPrivate), parent)
{
}
 
QQuickPropertyAnimation::QQuickPropertyAnimation(QQuickPropertyAnimationPrivate &dd, QObject *parent)
: QQuickAbstractAnimation(dd, parent)
{
}
 
QQuickPropertyAnimation::~QQuickPropertyAnimation()
{
}
 
int QQuickPropertyAnimation::duration() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->duration;
}
 
void QQuickPropertyAnimation::setDuration(int duration)
{
    if (duration < 0) {
        qmlWarning(this) << tr("Cannot set a duration of < 0");
        return;
    }
 
    Q_D(QQuickPropertyAnimation);
    if (d->duration == duration)
        return;
    d->duration = duration;
    if (d->componentComplete && d->running)
        d->ourPropertiesDirty = true;
    emit durationChanged(duration);
    if (d->group)
        d->animationGroupDirty();
}
 
QVariant QQuickPropertyAnimation::from() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->from;
}
 
void QQuickPropertyAnimation::setFrom(const QVariant &f)
{
    Q_D(QQuickPropertyAnimation);
    if (d->fromIsDefined && f == d->from)
        return;
    d->from = f;
    d->fromIsDefined = f.isValid();
    if (d->componentComplete && d->running)
        d->ourPropertiesDirty = true;
    emit fromChanged();
    if (d->group)
        d->animationGroupDirty();
}
 
QVariant QQuickPropertyAnimation::to() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->to;
}
 
void QQuickPropertyAnimation::setTo(const QVariant &t)
{
    Q_D(QQuickPropertyAnimation);
    if (d->toIsDefined && t == d->to)
        return;
    d->to = t;
    d->toIsDefined = t.isValid();
    if (d->componentComplete && d->running)
        d->ourPropertiesDirty = true;
    emit toChanged();
    if (d->group)
        d->animationGroupDirty();
}
 
 
 
QEasingCurve QQuickPropertyAnimation::easing() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->easing;
}
 
void QQuickPropertyAnimation::setEasing(const QEasingCurve &e)
{
    Q_D(QQuickPropertyAnimation);
    if (d->easing == e)
        return;
 
    d->easing = e;
    if (d->componentComplete && d->running)
        d->ourPropertiesDirty = true;
    emit easingChanged(e);
    if (d->group)
        d->animationGroupDirty();
}
 
QObject *QQuickPropertyAnimation::target() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->target;
}
 
void QQuickPropertyAnimation::setTargetObject(QObject *o)
{
    Q_D(QQuickPropertyAnimation);
    if (d->target == o)
        return;
    d->target = o;
    emit targetChanged();
    if (d->group)
        d->animationGroupDirty();
}
 
QString QQuickPropertyAnimation::property() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->propertyName;
}
 
void QQuickPropertyAnimation::setProperty(const QString &n)
{
    Q_D(QQuickPropertyAnimation);
    if (d->propertyName == n)
        return;
    d->propertyName = n;
    emit propertyChanged();
    if (d->group)
        d->animationGroupDirty();
}
 
QString QQuickPropertyAnimation::properties() const
{
    Q_D(const QQuickPropertyAnimation);
    return d->properties;
}
 
void QQuickPropertyAnimation::setProperties(const QString &prop)
{
    Q_D(QQuickPropertyAnimation);
    if (d->properties == prop)
        return;
 
    d->properties = prop;
    emit propertiesChanged(prop);
    if (d->group)
        d->animationGroupDirty();
}
 
QQmlListProperty<QObject> QQuickPropertyAnimation::targets()
{
    Q_D(QQuickPropertyAnimation);
    using ListPtr = QList<QPointer<QObject>> *;
    using LP = QQmlListProperty<QObject>;
    LP::AppendFunction appendFn = [](LP *prop, QObject *value)
    {
        static_cast<ListPtr>(prop->data)->append(value);
    };
    LP::CountFunction countFn = [](LP *prop)
    {
        return static_cast<ListPtr>(prop->data)->size();
    };
 
    LP::AtFunction atFn = [](LP *prop, qsizetype index) -> QObject *
    {
        return static_cast<ListPtr>(prop->data)->at(index);
    };
 
    LP::ClearFunction clearFN = [](LP *prop)
    {
        return static_cast<ListPtr>(prop->data)->clear();
    };
 
    LP::ReplaceFunction replaceFn = [](LP *prop, qsizetype index, QObject *value)
    {
        static_cast<ListPtr>(prop->data)->replace(index, value);
    };
 
    LP::RemoveLastFunction removeLastFn = [](LP *prop)
    {
        static_cast<ListPtr>(prop->data)->removeLast();
    };
 
    return QQmlListProperty<QObject>(this, &(d->targets), appendFn, countFn, atFn, clearFN, replaceFn, removeLastFn);
}
 
QQmlListProperty<QObject> QQuickPropertyAnimation::exclude()
{
    Q_D(QQuickPropertyAnimation);
    return QQmlListProperty<QObject>(this, &(d->exclude));
}
 
void QQuickAnimationPropertyUpdater::setValue(qreal v)
{
    bool deleted = false;
    wasDeleted = &deleted;
    if (reverse)
        v = 1 - v;
    for (int ii = 0; ii < actions.size(); ++ii) {
        QQuickStateAction &action = actions[ii];
 
        if (v == 1.) {
            QQmlPropertyPrivate::write(action.property, action.toValue, QQmlPropertyData::BypassInterceptor | QQmlPropertyData::DontRemoveBinding);
        } else {
            if (!fromIsSourced && !fromIsDefined) {
                action.fromValue = action.property.read();
                if (interpolatorType) {
                    QQuickPropertyAnimationPrivate::convertVariant(action.fromValue, QMetaType(interpolatorType));
                }
            }
            if (!interpolatorType) {
                int propType = action.property.propertyType();
                if (!prevInterpolatorType || prevInterpolatorType != propType) {
                    prevInterpolatorType = propType;
                    interpolator = QVariantAnimationPrivate::getInterpolator(prevInterpolatorType);
                }
            }
            if (interpolator)
                QQmlPropertyPrivate::write(action.property, interpolator(action.fromValue.constData(), action.toValue.constData(), v), QQmlPropertyData::BypassInterceptor | QQmlPropertyData::DontRemoveBinding);
        }
        if (deleted)
            return;
    }
    wasDeleted = nullptr;
    fromIsSourced = true;
}
 
void QQuickAnimationPropertyUpdater::debugUpdater(QDebug d, int indentLevel) const
{
    QByteArray ind(indentLevel, ' ');
    for (int i = 0; i < actions.size(); ++i) {
        const QQuickStateAction &action = actions.at(i);
        d << "\n" << ind.constData() << "target:" << action.property.object() << "property:" << action.property.name()
          << "from:" << action.fromValue << "to:" << action.toValue;
    }
}
 
QQuickStateActions QQuickPropertyAnimation::createTransitionActions(QQuickStateActions &actions,
                                                                                QQmlProperties &modified,
                                                                                QObject *defaultTarget)
{
    Q_D(QQuickPropertyAnimation);
    QQuickStateActions newActions;
 
    QStringList props = d->properties.isEmpty() ? QStringList() : d->properties.split(QLatin1Char(','));
    for (int ii = 0; ii < props.size(); ++ii)
        props[ii] = props.at(ii).trimmed();
    if (!d->propertyName.isEmpty())
        props << d->propertyName;
 
    QList<QPointer<QObject>> targets = d->targets;
    if (d->target)
        targets.append(d->target);
 
    bool hasSelectors = !props.isEmpty() || !targets.isEmpty() || !d->exclude.isEmpty();
    bool useType = (props.isEmpty() && d->defaultToInterpolatorType) ? true : false;
 
    if (d->defaultProperty.isValid() && !hasSelectors) {
        props << d->defaultProperty.name();
        targets << d->defaultProperty.object();
    }
 
    if (defaultTarget && targets.isEmpty())
        targets << defaultTarget;
 
    bool usingDefaultProperties = false;
    if (props.isEmpty() && !d->defaultProperties.isEmpty()) {
        props << d->defaultProperties.split(QLatin1Char(','));
        usingDefaultProperties = true;
    }
 
    bool hasExplicit = false;
    //an explicit animation has been specified
    if (d->toIsDefined) {
        QVector<QString> errorMessages;
        bool successfullyCreatedDefaultProperty = false;
 
        for (int i = 0; i < props.size(); ++i) {
            for (int j = 0; j < targets.size(); ++j) {
                const auto& guarded = targets.at(j);
                if (guarded.isNull())
                    continue;
                QObject *target = guarded.get();
                QQuickStateAction myAction;
                QString errorMessage;
                const QString &propertyName = props.at(i);
                myAction.property = d->createProperty(target, propertyName, this, &errorMessage);
                if (myAction.property.isValid()) {
                    if (usingDefaultProperties)
                        successfullyCreatedDefaultProperty = true;
 
                    if (d->fromIsDefined) {
                        myAction.fromValue = d->from;
                        d->convertVariant(myAction.fromValue, d->interpolatorType ? QMetaType(d->interpolatorType) : myAction.property.propertyMetaType());
                    }
                    myAction.toValue = d->to;
                    d->convertVariant(myAction.toValue, d->interpolatorType ? QMetaType(d->interpolatorType) : myAction.property.propertyMetaType());
                    newActions << myAction;
                    hasExplicit = true;
                    for (int ii = 0; ii < actions.size(); ++ii) {
                        QQuickStateAction &action = actions[ii];
                        if (action.property.object() == myAction.property.object() &&
                            myAction.property.name() == action.property.name()) {
                            modified << action.property;
                            break;  //### any chance there could be multiples?
                        }
                    }
                } else {
                    errorMessages.append(errorMessage);
                }
            }
        }
 
        if (!successfullyCreatedDefaultProperty) {
            for (const QString &errorMessage : std::as_const(errorMessages))
                qmlWarning(this) << errorMessage;
        }
    }
 
    if (!hasExplicit)
    for (int ii = 0; ii < actions.size(); ++ii) {
        QQuickStateAction &action = actions[ii];
 
        QObject *obj = action.property.object();
        QString propertyName = action.property.name();
        QObject *sObj = action.specifiedObject;
        QString sPropertyName = action.specifiedProperty;
        bool same = (obj == sObj);
 
        if ((targets.isEmpty() || targets.contains(obj) || (!same && targets.contains(sObj))) &&
           (!d->exclude.contains(obj)) && (same || (!d->exclude.contains(sObj))) &&
           (props.contains(propertyName) || (!same && props.contains(sPropertyName))
               || (useType && action.property.propertyType() == d->interpolatorType))) {
            QQuickStateAction myAction = action;
 
            if (d->fromIsDefined)
                myAction.fromValue = d->from;
            else
                myAction.fromValue = QVariant();
            if (d->toIsDefined)
                myAction.toValue = d->to;
 
            d->convertVariant(myAction.fromValue, d->interpolatorType ? QMetaType(d->interpolatorType) : myAction.property.propertyMetaType());
            d->convertVariant(myAction.toValue, d->interpolatorType ? QMetaType(d->interpolatorType) : myAction.property.propertyMetaType());
 
            modified << action.property;
 
            newActions << myAction;
            action.fromValue = myAction.toValue;
        }
    }
    return newActions;
}
 
QAbstractAnimationJob* QQuickPropertyAnimation::transition(QQuickStateActions &actions,
                                                                     QQmlProperties &modified,
                                                                     TransitionDirection direction,
                                                                     QObject *defaultTarget)
{
    Q_D(QQuickPropertyAnimation);
 
    QQuickStateActions dataActions = createTransitionActions(actions, modified, defaultTarget);
 
    QQuickBulkValueAnimator *animator = new QQuickBulkValueAnimator;
    animator->setDuration(d->duration);
    animator->setEasingCurve(d->easing);
 
    if (!dataActions.isEmpty()) {
        QQuickAnimationPropertyUpdater *data = new QQuickAnimationPropertyUpdater;
        data->interpolatorType = d->interpolatorType;
        data->interpolator = d->interpolator;
        data->reverse = direction == Backward ? true : false;
        data->fromIsSourced = false;
        data->fromIsDefined = d->fromIsDefined;
        data->actions = dataActions;
        animator->setAnimValue(data);
        animator->setFromIsSourcedValue(&data->fromIsSourced);
        d->actions = &data->actions; //remove this?
    }
 
    return initInstance(animator);
}
 
QQuickAnimationPropertyUpdater::~QQuickAnimationPropertyUpdater()
{
    if (wasDeleted) *wasDeleted = true;
}
 
QT_END_NAMESPACE
 
#include "moc_qquickanimation_p.cpp"