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diff --git a/src/gui/animation/qitemanimation.cpp b/src/gui/animation/qitemanimation.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtGui module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \class QItemAnimation
+    \brief The QItemAnimation class animates properties for QGraphicsItem
+    \since 4.5
+    \ingroup animation
+    \preliminary
+
+    This class is part of {The Animation Framework}.  You can use QItemAnimation
+    by itself as a simple animation class, or as part of more complex
+    animations through QAnimationGroup.
+
+    The most common way to use QItemAnimation is to construct an instance
+    of it by passing a pointer to a QGraphicsItem and the property you
+    would like to animate to QItemAnimation's constructor.
+
+    The start value of the animation is optional. If you do not set any start
+    value, the animation will operate on the target's current property value
+    at the point when the animation was started. You can call setStartValue()
+    to set the start value, and setEndValue() to set the target value for
+    the animated property.
+
+    You can choose to assign a target item by either calling setTargetItem()
+    or by passing a QGraphicsItem pointer to QVariantAnimation's constructor.
+
+    \sa QVariantAnimation, QAnimationGroup, {The Animation Framework}
+*/
+
+
+#ifndef QT_NO_ANIMATION
+
+#include "qitemanimation.h"
+#include "qitemanimation_p.h"
+
+#include <QtCore/QMutex>
+#ifdef QT_EXPERIMENTAL_SOLUTION
+#include "qanimationgroup.h"
+#else
+#include <QtCore/QAnimationGroup>
+#endif
+#include <QtGui/QGraphicsItem>
+
+
+QT_BEGIN_NAMESPACE
+
+typedef QPair<QGraphicsItem *, QItemAnimation::PropertyName> QItemAnimationPair;
+typedef QHash<QItemAnimationPair, QItemAnimation*> QItemAnimationHash;
+Q_GLOBAL_STATIC(QItemAnimationHash, _q_runningAnimations)
+Q_GLOBAL_STATIC_WITH_ARGS(QMutex, guardHashLock, (QMutex::Recursive) )
+
+void QItemAnimationPrivate::initDefaultStartValue()
+{
+    if (target && !defaultStartValue.isValid() && (atBeginning() || atEnd())) {
+        switch (propertyName)
+        {
+        case QItemAnimation::Position:
+            setDefaultStartValue(target->pos());
+            break;
+        case QItemAnimation::Opacity:
+            setDefaultStartValue(target->opacity());
+            break;
+        case QItemAnimation::RotationX:
+            setDefaultStartValue(target->xRotation());
+            break;
+        case QItemAnimation::RotationY:
+            setDefaultStartValue(target->yRotation());
+            break;
+        case QItemAnimation::RotationZ:
+            setDefaultStartValue(target->zRotation());
+            break;
+        case QItemAnimation::ScaleFactorX:
+            setDefaultStartValue(target->xScale());
+            break;
+        case QItemAnimation::ScaleFactorY:
+            setDefaultStartValue(target->yScale());
+            break;
+        default:
+            break;
+        }
+    }
+}
+
+
+/*!
+    Construct a QItemAnimation object. \a parent is passed to QObject's
+    constructor.
+*/
+
+QItemAnimation::QItemAnimation(QObject *parent) : QVariantAnimation(*new QItemAnimationPrivate, parent)
+{
+}
+
+/*!
+    Construct a QItemAnimation object. \a parent is passed to QObject's
+    constructor. The animation changes the property \a propertyName on \a
+    target. The default duration is 250ms.
+
+    \sa targetItem, propertyName
+*/
+
+QItemAnimation::QItemAnimation(QGraphicsItem *target, PropertyName p, QObject *parent) : QVariantAnimation(*new QItemAnimationPrivate, parent)
+{
+    Q_D(QItemAnimation);
+    d->target = target;
+    d->propertyName = p;
+}
+
+/*!
+    Destroys the QPropertyAnimation instance.
+ */
+QItemAnimation::~QItemAnimation()
+{
+    stop();
+}
+
+/*!
+    \property QItemAnimation::targetItem
+    \brief the target Graphics Item for this animation.
+
+    This property defines the target item for this animation.
+
+    \sa targetItem
+ */
+
+QGraphicsItem *QItemAnimation::targetItem() const
+{
+   Q_D(const QItemAnimation);
+   return d->target;
+}
+
+void QItemAnimation::setTargetItem(QGraphicsItem *item)
+{
+   Q_D(QItemAnimation);
+   d->target = item;
+}
+
+/*!
+    \property QItemAnimation::propertyName
+    \brief the target property for this animation
+
+    This property defines the target property for this animation. The
+    property is required for the animation to operate.
+ */
+QItemAnimation::PropertyName QItemAnimation::propertyName() const
+{
+    Q_D(const QItemAnimation);
+    return d->propertyName;
+}
+
+void QItemAnimation::setPropertyName(PropertyName p)
+{
+    Q_D(QItemAnimation);
+    d->propertyName = p;
+}
+
+/*!
+    This static function returns the list of running animations on \a item.
+    If item is 0, then it returns all QItemAnimations running on all QGraphicsItem.
+ */
+QList<QItemAnimation*> QItemAnimation::runningAnimations(QGraphicsItem *item)
+{
+    QMutexLocker locker(guardHashLock());
+    QList<QItemAnimation*> animList = _q_runningAnimations()->values();
+    if (item == 0)
+        return animList;
+
+    QList<QItemAnimation*> ret;
+
+    for (QList<QItemAnimation*>::const_iterator it = animList.constBegin(); it != animList.constEnd(); ++it) {
+        if ((*it)->targetItem() == item)
+            ret += *it;
+    }
+
+    return ret;
+}
+
+/*!
+    This static function returns the running animations on \a item and on \a property.
+    \a prop.
+ */
+QItemAnimation* QItemAnimation::runningAnimation(QGraphicsItem *item, PropertyName prop)
+{
+    QMutexLocker locker(guardHashLock());
+    return _q_runningAnimations()->value(qMakePair(item, prop), 0 /*default value*/);
+}
+
+/*!
+    \reimp
+ */
+bool QItemAnimation::event(QEvent *event)
+{
+    return QVariantAnimation::event(event);
+}
+
+/*!
+    \reimp
+ */
+void QItemAnimation::updateCurrentValue(const QVariant &value)
+{
+    Q_D(QItemAnimation);
+    if (!d->target || d->state == Stopped)
+        return;
+
+    switch (d->propertyName)
+    {
+    case Position:
+        d->target->setPos(qVariantValue<QPointF>(value));
+        break;
+    case Opacity:
+        d->target->setOpacity(qVariantValue<qreal>(value));
+        break;
+    case RotationX:
+        d->target->setXRotation(qVariantValue<qreal>(value));
+        break;
+    case RotationY:
+        d->target->setYRotation(qVariantValue<qreal>(value));
+        break;
+    case RotationZ:
+        d->target->setZRotation(qVariantValue<qreal>(value));
+        break;
+    case ScaleFactorX:
+        d->target->setXScale(qVariantValue<qreal>(value));
+        break;
+    case ScaleFactorY:
+        d->target->setYScale(qVariantValue<qreal>(value));
+        break;
+    default:
+        qWarning("The property you're trying to animate is not managed by the item");
+        break;
+    }
+}
+
+
+/*!
+    \reimp
+*/
+void QItemAnimation::updateState(QAbstractAnimation::State oldState,
+                                 QAbstractAnimation::State newState)
+{
+    Q_D(QItemAnimation);
+    QVariantAnimation::updateState(oldState, newState);
+    QMutexLocker locker(guardHashLock());
+    QItemAnimationHash *hash = _q_runningAnimations();
+    QItemAnimationPair key(d->target, d->propertyName);
+
+    //let's try to convert start and target values according to the type of the proerty
+    //we're animating
+    if (newState != Stopped) {
+        int type = QVariant::Invalid;
+        switch (d->propertyName)
+        {
+        case Position:
+            type = QVariant::PointF;
+            break;
+        case Opacity:
+        case RotationX:
+        case RotationY:
+        case RotationZ:
+        case ScaleFactorX:
+        case ScaleFactorY:
+            type = qMetaTypeId<qreal>();
+            break;
+        case None:
+        default:
+            break;
+
+        }
+        if (type != QVariant::Invalid) {
+            d->convertValues(type);
+        }
+    }
+
+    if (newState == Running) {
+        if (hash->contains(key)) {
+            QItemAnimation *oldAnim = hash->value(key);
+            if (oldAnim != this) {
+                //we try to stop the top level group
+                QAbstractAnimation *current = oldAnim;
+                while(current->group() && current->state() != Stopped) current = current->group();
+                current->stop();
+            }
+        }
+        hash->insert(key, this);
+        // Initialize start value
+        d->initDefaultStartValue();
+
+    } else if (hash->value(key) == this) {
+        hash->remove(key);
+    }
+}
+
+///TODO: should be placed somewhere else (in its own file)
+template<> Q_INLINE_TEMPLATE QColor _q_interpolate(const QColor &f,const QColor &t, qreal progress)
+{
+    return QColor(_q_interpolate(f.red(), t.red(), progress),
+                  _q_interpolate(f.green(), t.green(), progress),
+                  _q_interpolate(f.blue(), t.blue(), progress),
+                  _q_interpolate(f.alpha(), t.alpha(), progress));
+}
+
+
+
+static int qRegisterGuiGetInterpolator()
+{
+    qRegisterAnimationInterpolator<QColor>(_q_interpolateVariant<QColor>);
+    return 1;
+}
+Q_CONSTRUCTOR_FUNCTION(qRegisterGuiGetInterpolator)
+
+static int qUnregisterGuiGetInterpolator()
+{
+    qRegisterAnimationInterpolator<QColor>(0);
+    return 1;
+}
+Q_DESTRUCTOR_FUNCTION(qUnregisterGuiGetInterpolator)
+
+QT_END_NAMESPACE
+
+#include "moc_qitemanimation.cpp"
+
+#endif //QT_NO_ANIMATION