qanimationgroup.cpp

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#include "qanimationgroup.h"
#include <QtCore/qdebug.h>
#include <QtCore/qcoreevent.h>
#include "qanimationgroup_p.h"

#ifndef QT_NO_ANIMATION

QT_BEGIN_NAMESPACE


QAnimationGroup::QAnimationGroup(QObject *parent)
    : QAbstractAnimation(*new QAnimationGroupPrivate, parent)
{
}

QAnimationGroup::QAnimationGroup(QAnimationGroupPrivate &dd, QObject *parent)
    : QAbstractAnimation(dd, parent)
{
}

QAnimationGroup::~QAnimationGroup()
{
}

QAbstractAnimation *QAnimationGroup::animationAt(int index) const
{
    Q_D(const QAnimationGroup);

    if (index < 0 || index >= d->animations.size()) {
        qWarning("QAnimationGroup::animationAt: index is out of bounds");
        return 0;
    }

    return d->animations.at(index);
}


int QAnimationGroup::animationCount() const
{
    Q_D(const QAnimationGroup);
    return d->animations.size();
}

int QAnimationGroup::indexOfAnimation(QAbstractAnimation *animation) const
{
    Q_D(const QAnimationGroup);
    return d->animations.indexOf(animation);
}

void QAnimationGroup::addAnimation(QAbstractAnimation *animation)
{
    Q_D(QAnimationGroup);
    insertAnimation(d->animations.count(), animation);
}

void QAnimationGroup::insertAnimation(int index, QAbstractAnimation *animation)
{
    Q_D(QAnimationGroup);

    if (index < 0 || index > d->animations.size()) {
        qWarning("QAnimationGroup::insertAnimation: index is out of bounds");
        return;
    }

    if (QAnimationGroup *oldGroup = animation->group())
        oldGroup->removeAnimation(animation);

    d->animations.insert(index, animation);
    QAbstractAnimationPrivate::get(animation)->group = this;
    // this will make sure that ChildAdded event is sent to 'this'
    animation->setParent(this);
    d->animationInsertedAt(index);
}

void QAnimationGroup::removeAnimation(QAbstractAnimation *animation)
{
    Q_D(QAnimationGroup);

    if (!animation) {
        qWarning("QAnimationGroup::remove: cannot remove null animation");
        return;
    }
    int index = d->animations.indexOf(animation);
    if (index == -1) {
        qWarning("QAnimationGroup::remove: animation is not part of this group");
        return;
    }

    takeAnimation(index);
}

QAbstractAnimation *QAnimationGroup::takeAnimation(int index)
{
    Q_D(QAnimationGroup);
    if (index < 0 || index >= d->animations.size()) {
        qWarning("QAnimationGroup::takeAnimation: no animation at index %d", index);
        return 0;
    }
    QAbstractAnimation *animation = d->animations.at(index);
    QAbstractAnimationPrivate::get(animation)->group = 0;
    // ### removing from list before doing setParent to avoid inifinite recursion
    // in ChildRemoved event
    d->animations.removeAt(index);
    animation->setParent(0);
    d->animationRemoved(index, animation);
    return animation;
}

void QAnimationGroup::clear()
{
    Q_D(QAnimationGroup);
    qDeleteAll(d->animations);
}

bool QAnimationGroup::event(QEvent *event)
{
    Q_D(QAnimationGroup);
    if (event->type() == QEvent::ChildAdded) {
        QChildEvent *childEvent = static_cast<QChildEvent *>(event);
        if (QAbstractAnimation *a = qobject_cast<QAbstractAnimation *>(childEvent->child())) {
            if (a->group() != this)
                addAnimation(a);
        }
    } else if (event->type() == QEvent::ChildRemoved) {
        QChildEvent *childEvent = static_cast<QChildEvent *>(event);
        QAbstractAnimation *a = static_cast<QAbstractAnimation *>(childEvent->child());
        // You can only rely on the child being a QObject because in the QEvent::ChildRemoved
        // case it might be called from the destructor.
        int index = d->animations.indexOf(a);
        if (index != -1)
            takeAnimation(index);
    }
    return QAbstractAnimation::event(event);
}


void QAnimationGroupPrivate::animationRemoved(int index, QAbstractAnimation *)
{
    Q_Q(QAnimationGroup);
    Q_UNUSED(index);
    if (animations.isEmpty()) {
        currentTime = 0;
        q->stop();
    }
}

QT_END_NAMESPACE

#include "moc_qanimationgroup.cpp"

#endif //QT_NO_ANIMATION