QPropertyAnimation on QGraphicsItem freezes app

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Hi,

I´m animating a QGraphicsItem with QPropertyAnimation. I´ve subclassed QGraphicsItem like it´s descriped in the docs (setting Q_PROPERTY etc.).

If I put more than one of these animations into a QParallelAnimationGroup the CPU load is up to 25% and my whole application freezes for the time of the animation. If I replace the QGraphicsItem with a QPushbutton everything is fine.

Code:
@
int Count =0;

do
{
AnimatedGraphicsItem *aPStatus = new AnimatedGraphicsItem();
m_scene->addItem(aPStatus);

QPropertyAnimation *statusAni = new QPropertyAnimation(aPStatus,"pos");
statusAni->setDuration(1600);
statusAni->setStartValue(QPoint(0, 0));
statusAni->setEndValue(QPoint(pB->pos().x() + 10, pB->pos().y() + 10));
statusAni->setEasingCurve(QEasingCurve::InCurve);
statusAni->setLoopCount(-1);
m_GroupAnimStatus->addAnimation(statusAni);
Count++;

}while(Count < 3);

m_GroupAnimStatus->start(QPropertyAnimation::DeleteWhenStopped);
@

I found some posts which descriped the same problem but none with a solution.

Thanks and regards

p3c0

Hi,

I'm not sure but try setting "setCacheMode":http://qt-project.org/doc/qt-5/qgraphicsitem.html#setCacheMode to DeviceCoordinateCache.

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Hi,

thanks for your reply. I already set the CacheMode to DeviceCoordinateCache without success. Any further ideas?