diff --git a/src/animations/animations.pri b/src/animations/animations.pri
index c167dec..7558500 100644
--- a/src/animations/animations.pri
+++ b/src/animations/animations.pri
@@ -8,7 +8,9 @@ SOURCES += \
     $$PWD/pieanimation.cpp \
     $$PWD/piesliceanimation.cpp \
     $$PWD/splineanimation.cpp \
-    $$PWD/baranimation.cpp
+    $$PWD/baranimation.cpp \
+    $$PWD/stackedbaranimation.cpp \
+    $$PWD/percentbaranimation.cpp
 
 
 
@@ -20,5 +22,6 @@ PRIVATE_HEADERS += \
     $$PWD/pieanimation_p.h \
     $$PWD/piesliceanimation_p.h \
     $$PWD/splineanimation_p.h \
-    $$PWD/baranimation_p.h
-
+    $$PWD/baranimation_p.h \
+    $$PWD/stackedbaranimation_p.h \
+    $$PWD/percentbaranimation_p.h
diff --git a/src/animations/baranimation.cpp b/src/animations/baranimation.cpp
index 7882fe8..6e5bbbe 100644
--- a/src/animations/baranimation.cpp
+++ b/src/animations/baranimation.cpp
@@ -20,12 +20,9 @@
 
 #include "baranimation_p.h"
 #include "barchartitem_p.h"
-#include <QParallelAnimationGroup>
 #include <QTimer>
 
 Q_DECLARE_METATYPE(QVector<QRectF>)
-//Q_DECLARE_METATYPE(BarLayout)     // TODO?
-
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
@@ -33,6 +30,7 @@ BarAnimation::BarAnimation(BarChartItem *item)
     :ChartAnimation(item),
     m_item(item)
 {
+    setEasingCurve(QEasingCurve::OutQuart);
 }
 
 BarAnimation::~BarAnimation()
@@ -53,9 +51,7 @@ QVariant BarAnimation::interpolated(const QVariant &from, const QVariant &to, qr
         qreal x = endVector[i].topLeft().x();
         qreal y = endVector[i].topLeft().y() + endVector[i].height() - h;
 
-        QPointF topLeft(x,y);
-        QSizeF size(w,h);
-        QRectF value(topLeft,size);
+        QRectF value(x,y,w,h);
         result << value;
     }
     return qVariantFromValue(result);
@@ -67,6 +63,14 @@ void BarAnimation::updateCurrentValue(const QVariant &value)
     m_item->setLayout(layout);
 }
 
+void BarAnimation::updateLayout(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout)
+{
+    setDuration(ChartAnimationDuration);
+    setKeyValueAt(0.0, qVariantFromValue(oldLayout));
+    setKeyValueAt(1.0, qVariantFromValue(newLayout));
+    QTimer::singleShot(0, this, SLOT(start()));
+}
+
 #include "moc_baranimation_p.cpp"
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/animations/baranimation_p.h b/src/animations/baranimation_p.h
index cf82425..a1df554 100644
--- a/src/animations/baranimation_p.h
+++ b/src/animations/baranimation_p.h
@@ -51,11 +51,10 @@ public: // from QVariantAnimation
     virtual QVariant interpolated(const QVariant &from, const QVariant &to, qreal progress) const;
     virtual void updateCurrentValue(const QVariant &value);
 
-public Q_SLOTS:
+    void updateLayout(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout);
 
 private:
     BarChartItem *m_item;
-    QHash<QBarSet *, BarSetAnimation *> m_animations;
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/animations/chartanimator.cpp b/src/animations/chartanimator.cpp
index 7421124..276ca61 100644
--- a/src/animations/chartanimator.cpp
+++ b/src/animations/chartanimator.cpp
@@ -26,6 +26,10 @@
 #include "pieanimation_p.h"
 #include "baranimation_p.h"
 #include "barchartitem_p.h"
+#include "stackedbaranimation_p.h"
+#include "stackedbarchartitem_p.h"
+#include "percentbaranimation_p.h"
+#include "percentbarchartitem_p.h"
 #include "areachartitem_p.h"
 #include "splinechartitem_p.h"
 #include "scatterchartitem_p.h"
@@ -59,6 +63,7 @@ void ChartAnimator::addAnimation(PieChartItem *item)
 
 void ChartAnimator::addAnimation(BarChartItem *item)
 {
+    // This can handle also GroupedBarChartItem because bars are side by side
     ChartAnimation *animation = m_animations.value(item);
 
     if (!animation) {
@@ -69,6 +74,29 @@ void ChartAnimator::addAnimation(BarChartItem *item)
     item->setAnimator(this);
 }
 
+void ChartAnimator::addAnimation(StackedBarChartItem *item)
+{
+    ChartAnimation *animation = m_animations.value(item);
+
+    if (!animation) {
+        animation = new StackedBarAnimation(item);
+        m_animations.insert(item, animation);
+    }
+
+    item->setAnimator(this);
+}
+
+void ChartAnimator::addAnimation(PercentBarChartItem *item)
+{
+    ChartAnimation *animation = m_animations.value(item);
+
+    if (!animation) {
+        animation = new PercentBarAnimation(item);
+        m_animations.insert(item, animation);
+    }
+
+    item->setAnimator(this);
+}
 
 void ChartAnimator::removeAnimation(Chart *item)
 {
@@ -100,19 +128,41 @@ void ChartAnimator::updateAnimation(PieChartItem *item, PieSliceItem *sliceItem,
 void ChartAnimator::updateLayout(BarChartItem *item, const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout)
 {
     BarAnimation *animation = static_cast<BarAnimation *>(m_animations.value(item));
-    m_animations.remove(item);
     if (animation) {
+        m_animations.remove(item);
         animation->deleteLater();
         animation = 0;
+        addAnimation(item);
     }
-    addAnimation(item);
     animation = static_cast<BarAnimation *>(m_animations.value(item));
-    animation->setDuration(ChartAnimationDuration);
-    animation->setKeyValueAt(0.0, qVariantFromValue(oldLayout));
-    animation->setKeyValueAt(1.0, qVariantFromValue(newLayout));
-    QTimer::singleShot(0, animation, SLOT(start()));
+    animation->updateLayout(oldLayout,newLayout);
+}
+
+void ChartAnimator::updateLayout(StackedBarChartItem *item, const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout)
+{
+    StackedBarAnimation *animation = static_cast<StackedBarAnimation *>(m_animations.value(item));
+    if (animation) {
+        m_animations.remove(item);
+        animation->deleteLater();
+        animation = 0;
+        addAnimation(item);
+    }
+    animation = static_cast<StackedBarAnimation *>(m_animations.value(item));
+    animation->updateLayout(oldLayout,newLayout);
 }
 
+void ChartAnimator::updateLayout(PercentBarChartItem *item, const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout)
+{
+    PercentBarAnimation *animation = static_cast<PercentBarAnimation *>(m_animations.value(item));
+    if (animation) {
+        m_animations.remove(item);
+        animation->deleteLater();
+        animation = 0;
+        addAnimation(item);
+    }
+    animation = static_cast<PercentBarAnimation *>(m_animations.value(item));
+    animation->updateLayout(oldLayout,newLayout);
+}
 #include "moc_chartanimator_p.cpp"
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/animations/chartanimator_p.h b/src/animations/chartanimator_p.h
index a6093dc..9caf13a 100644
--- a/src/animations/chartanimator_p.h
+++ b/src/animations/chartanimator_p.h
@@ -55,7 +55,9 @@ public:
     virtual ~ChartAnimator();
 
     void addAnimation(PieChartItem *item);
-    void addAnimation(BarChartItem *item);
+    void addAnimation(BarChartItem *item);          // This can handle also grouped bar chart.
+    void addAnimation(StackedBarChartItem *item);
+    void addAnimation(PercentBarChartItem *item);
     void removeAnimation(Chart *item);
 
     void addAnimation(PieChartItem *item, PieSliceItem *sliceItem, const PieSliceData &sliceData, bool isEmpty);
@@ -63,6 +65,8 @@ public:
     void updateAnimation(PieChartItem *item, PieSliceItem *sliceItem, const PieSliceData &sliceData);
 
     void updateLayout(BarChartItem *item, const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout);
+    void updateLayout(StackedBarChartItem *item, const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout);
+    void updateLayout(PercentBarChartItem *item, const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout);
 
 private:
      QMap<Chart *, ChartAnimation *> m_animations;
diff --git a/src/animations/percentbaranimation.cpp b/src/animations/percentbaranimation.cpp
new file mode 100644
index 0000000..a4cc481
--- /dev/null
+++ b/src/animations/percentbaranimation.cpp
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "percentbaranimation_p.h"
+#include "percentbarchartitem_p.h"
+#include <QTimer>
+
+Q_DECLARE_METATYPE(QVector<QRectF>)
+
+QTCOMMERCIALCHART_BEGIN_NAMESPACE
+
+PercentBarAnimation::PercentBarAnimation(BarChartItem *item)
+    :ChartAnimation(item),
+    m_item(item)
+{
+    setEasingCurve(QEasingCurve::OutQuart);
+}
+
+PercentBarAnimation::~PercentBarAnimation()
+{
+}
+
+QVariant PercentBarAnimation::interpolated(const QVariant &from, const QVariant &to, qreal progress) const
+{
+    QVector<QRectF> startVector = qVariantValue<QVector<QRectF> >(from);
+    QVector<QRectF> endVector = qVariantValue<QVector<QRectF> >(to);
+    QVector<QRectF> result;
+
+    Q_ASSERT(startVector.count() == endVector.count());
+
+    qreal zeroPos = ((m_item->geometry().height() + m_item->geometry().y()) * (1 - progress));
+
+    for(int i = 0; i < startVector.count(); i++) {
+        qreal w = endVector[i].width();
+        qreal h = startVector[i].height() + ((endVector[i].height() - startVector[i].height()) * progress);
+        qreal x = endVector[i].topLeft().x();
+        qreal y = startVector[i].topLeft().y() + ((endVector[i].topLeft().y() - startVector[i].topLeft().y()) * progress)
+                + zeroPos;
+
+        QRectF value(x,y,w,h);
+        result << value;
+    }
+    return qVariantFromValue(result);
+}
+
+void PercentBarAnimation::updateCurrentValue(const QVariant &value)
+{
+    QVector<QRectF> layout = qVariantValue<QVector<QRectF> >(value);
+    m_item->setLayout(layout);
+}
+
+void PercentBarAnimation::updateLayout(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout)
+{
+    setDuration(ChartAnimationDuration);
+    setKeyValueAt(0.0, qVariantFromValue(oldLayout));
+    setKeyValueAt(1.0, qVariantFromValue(newLayout));
+    QTimer::singleShot(0, this, SLOT(start()));
+}
+
+#include "moc_percentbaranimation_p.cpp"
+
+QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/animations/percentbaranimation_p.h b/src/animations/percentbaranimation_p.h
new file mode 100644
index 0000000..1f06675
--- /dev/null
+++ b/src/animations/percentbaranimation_p.h
@@ -0,0 +1,43 @@
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtCommercial Chart 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.
+
+#ifndef PERCENTBARANIMATION_P_H
+#define PERCENTBARANIMATION_P_H
+
+#include "chartanimation_p.h"
+#include "barchartitem_p.h"
+
+QTCOMMERCIALCHART_BEGIN_NAMESPACE
+
+class PercentBarChartItem;
+class QBarSet;
+class BarSetAnimation;
+
+class PercentBarAnimation : public ChartAnimation
+{
+    Q_OBJECT
+public:
+    PercentBarAnimation(BarChartItem *item);
+    ~PercentBarAnimation();
+
+public:
+    virtual QVariant interpolated(const QVariant &from, const QVariant &to, qreal progress) const;
+    virtual void updateCurrentValue(const QVariant &value);
+
+    void updateLayout(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout);
+
+private:
+    BarChartItem *m_item;
+    QHash<QBarSet *, BarSetAnimation *> m_animations;
+
+};
+
+QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif // PERCENTBARANIMATION_P_H
diff --git a/src/animations/stackedbaranimation.cpp b/src/animations/stackedbaranimation.cpp
new file mode 100644
index 0000000..a08fb9c
--- /dev/null
+++ b/src/animations/stackedbaranimation.cpp
@@ -0,0 +1,79 @@
+/****************************************************************************
+**
+** Copyright (C) 2012 Digia Plc
+** All rights reserved.
+** For any questions to Digia, please use contact form at http://qt.digia.com
+**
+** This file is part of the Qt Commercial Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Commercial licenses may use this file in
+** accordance with the Qt Commercial License Agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and Digia.
+**
+** If you have questions regarding the use of this file, please use
+** contact form at http://qt.digia.com
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "stackedbaranimation_p.h"
+#include "stackedbarchartitem_p.h"
+#include <QTimer>
+
+Q_DECLARE_METATYPE(QVector<QRectF>)
+
+QTCOMMERCIALCHART_BEGIN_NAMESPACE
+
+StackedBarAnimation::StackedBarAnimation(BarChartItem *item)
+    :ChartAnimation(item),
+    m_item(item)
+{
+    setEasingCurve(QEasingCurve::OutQuart);
+}
+
+StackedBarAnimation::~StackedBarAnimation()
+{
+}
+
+QVariant StackedBarAnimation::interpolated(const QVariant &from, const QVariant &to, qreal progress) const
+{
+    QVector<QRectF> startVector = qVariantValue<QVector<QRectF> >(from);
+    QVector<QRectF> endVector = qVariantValue<QVector<QRectF> >(to);
+    QVector<QRectF> result;
+
+    Q_ASSERT(startVector.count() == endVector.count());
+
+    qreal zeroPos = ((m_item->geometry().height() + m_item->geometry().y()) * (1 - progress));
+
+    for(int i = 0; i < startVector.count(); i++) {
+        qreal w = endVector[i].width();
+        qreal h = startVector[i].height() + ((endVector[i].height() - startVector[i].height()) * progress);
+        qreal x = endVector[i].topLeft().x();
+        qreal y = startVector[i].topLeft().y() + ((endVector[i].topLeft().y() - startVector[i].topLeft().y()) * progress)
+                + zeroPos;
+
+        QRectF value(x,y,w,h);
+        result << value;
+    }
+    return qVariantFromValue(result);
+}
+
+void StackedBarAnimation::updateCurrentValue(const QVariant &value)
+{
+    QVector<QRectF> layout = qVariantValue<QVector<QRectF> >(value);
+    m_item->setLayout(layout);
+}
+
+
+void StackedBarAnimation::updateLayout(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout)
+{
+    setDuration(ChartAnimationDuration);
+    setKeyValueAt(0.0, qVariantFromValue(oldLayout));
+    setKeyValueAt(1.0, qVariantFromValue(newLayout));
+    QTimer::singleShot(0, this, SLOT(start()));
+}
+#include "moc_stackedbaranimation_p.cpp"
+
+QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/animations/stackedbaranimation_p.h b/src/animations/stackedbaranimation_p.h
new file mode 100644
index 0000000..dd6a45b
--- /dev/null
+++ b/src/animations/stackedbaranimation_p.h
@@ -0,0 +1,43 @@
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtCommercial Chart 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.
+
+#ifndef STACKEDBARANIMATION_P_H
+#define STACKEDBARANIMATION_P_H
+
+#include "chartanimation_p.h"
+#include "barchartitem_p.h"
+
+QTCOMMERCIALCHART_BEGIN_NAMESPACE
+
+class StackedBarChartItem;
+class QBarSet;
+class BarSetAnimation;
+
+class StackedBarAnimation : public ChartAnimation
+{
+    Q_OBJECT
+public:
+    StackedBarAnimation(BarChartItem *item);
+    ~StackedBarAnimation();
+
+public:
+    virtual QVariant interpolated(const QVariant &from, const QVariant &to, qreal progress) const;
+    virtual void updateCurrentValue(const QVariant &value);
+
+    void updateLayout(const QVector<QRectF> &oldLayout, const QVector<QRectF> &newLayout);
+
+private:
+    BarChartItem *m_item;
+    QHash<QBarSet *, BarSetAnimation *> m_animations;
+
+};
+
+QTCOMMERCIALCHART_END_NAMESPACE
+
+#endif // STACKEDBARANIMATION_P_H
diff --git a/src/barchart/bar.cpp b/src/barchart/bar.cpp
index b7235ab..f893017 100644
--- a/src/barchart/bar.cpp
+++ b/src/barchart/bar.cpp
@@ -19,7 +19,6 @@
 ****************************************************************************/
 
 #include "bar_p.h"
-#include <QDebug>
 #include <QPainter>
 #include <QGraphicsSceneEvent>
 
diff --git a/src/barchart/barchartitem_p.h b/src/barchart/barchartitem_p.h
index de25a00..55f8759 100644
--- a/src/barchart/barchartitem_p.h
+++ b/src/barchart/barchartitem_p.h
@@ -54,7 +54,7 @@ public:
     QRectF boundingRect() const;
 
     virtual QVector<QRectF> calculateLayout();
-    void applyLayout(const QVector<QRectF> &layout);
+    virtual void applyLayout(const QVector<QRectF> &layout);
     void setLayout(const QVector<QRectF> &layout);
     void updateLayout(const QVector<QRectF> &layout);
 
diff --git a/src/barchart/percentbarchartitem.cpp b/src/barchart/percentbarchartitem.cpp
index 4aa52bf..a4d8ff6 100644
--- a/src/barchart/percentbarchartitem.cpp
+++ b/src/barchart/percentbarchartitem.cpp
@@ -22,7 +22,7 @@
 #include "bar_p.h"
 #include "qbarseries_p.h"
 #include "qbarset.h"
-#include <QDebug>
+#include "chartanimator_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
@@ -92,6 +92,15 @@ QVector<QRectF> PercentBarChartItem::calculateLayout()
     return layout;
 }
 
+void PercentBarChartItem::applyLayout(const QVector<QRectF> &layout)
+{
+    if (animator()) {
+        animator()->updateLayout(this, m_layout, layout);
+    } else {
+        setLayout(layout);
+        update();
+    }
+}
 #include "moc_percentbarchartitem_p.cpp"
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/barchart/percentbarchartitem_p.h b/src/barchart/percentbarchartitem_p.h
index 5c5fe51..494a168 100644
--- a/src/barchart/percentbarchartitem_p.h
+++ b/src/barchart/percentbarchartitem_p.h
@@ -46,6 +46,7 @@ public:
 
 private:
     virtual QVector<QRectF> calculateLayout();
+    virtual void applyLayout(const QVector<QRectF> &layout);
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/barchart/stackedbarchartitem.cpp b/src/barchart/stackedbarchartitem.cpp
index 15a7c9f..fb0c5e7 100644
--- a/src/barchart/stackedbarchartitem.cpp
+++ b/src/barchart/stackedbarchartitem.cpp
@@ -23,6 +23,7 @@
 #include "qbarset_p.h"
 #include "qbarseries_p.h"
 #include "qbarset.h"
+#include "chartanimator_p.h"
 
 QTCOMMERCIALCHART_BEGIN_NAMESPACE
 
@@ -85,6 +86,16 @@ QVector<QRectF> StackedBarChartItem::calculateLayout()
     return layout;
 }
 
+void StackedBarChartItem::applyLayout(const QVector<QRectF> &layout)
+{
+    if (animator()) {
+        animator()->updateLayout(this, m_layout, layout);
+    } else {
+        setLayout(layout);
+        update();
+    }
+}
+
 #include "moc_stackedbarchartitem_p.cpp"
 
 QTCOMMERCIALCHART_END_NAMESPACE
diff --git a/src/barchart/stackedbarchartitem_p.h b/src/barchart/stackedbarchartitem_p.h
index 7c255de..15b54b9 100644
--- a/src/barchart/stackedbarchartitem_p.h
+++ b/src/barchart/stackedbarchartitem_p.h
@@ -45,6 +45,7 @@ public:
 
 private:
     virtual QVector<QRectF> calculateLayout();
+    virtual void applyLayout(const QVector<QRectF> &layout);
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE