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diff --git a/src/charts/piechart/pieslicedata_p.h b/src/charts/piechart/pieslicedata_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2014 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 Enterprise Charts Add-on.
+**
+** $QT_BEGIN_LICENSE$
+** Licensees holding valid Qt Enterprise licenses may use this file in
+** accordance with the Qt Enterprise 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
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt Enterprise 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 PIESLICEDATA_P_H
+#define PIESLICEDATA_P_H
+
+#include <qchartglobal.h>
+#include <qpieslice.h>
+#include <QPen>
+#include <QBrush>
+
+QT_CHARTS_BEGIN_NAMESPACE
+
+template <class T>
+class Themed : public T
+{
+public:
+    Themed(): m_isThemed(true) {}
+
+    inline T &operator=(const T &other) { return T::operator =(other); }
+
+    inline bool operator!=(const T &other) const { return T::operator !=(other); }
+    inline bool operator!=(const Themed &other) const
+    {
+        if (T::operator !=(other))
+            return true;
+
+        if (m_isThemed != other.m_isThemed)
+            return true;
+
+        return false;
+    }
+
+    inline void setThemed(bool state) { m_isThemed = state; }
+    inline bool isThemed() const { return m_isThemed; }
+
+private:
+    bool m_isThemed;
+};
+
+class PieSliceData
+{
+public:
+    PieSliceData() :
+        m_value(0),
+        m_isExploded(false),
+        m_explodeDistanceFactor(0.15),
+        m_isLabelVisible(false),
+        m_labelPosition(QPieSlice::LabelOutside),
+        m_labelArmLengthFactor(0.15),
+        m_percentage(0),
+        m_radius(0),
+        m_startAngle(0),
+        m_angleSpan(0),
+        m_holeRadius(0)
+    {
+    }
+
+    bool operator!=(const PieSliceData &other) const {
+        if (!qFuzzyIsNull(m_value - other.m_value))
+            return true;
+
+        if (m_slicePen != other.m_slicePen ||
+            m_sliceBrush != other.m_sliceBrush)
+            return true;
+
+        if (m_isExploded != other.m_isExploded ||
+            !qFuzzyIsNull(m_explodeDistanceFactor - other.m_explodeDistanceFactor))
+            return true;
+
+        if (m_isLabelVisible != other.m_isLabelVisible ||
+            m_labelText != other.m_labelText ||
+            m_labelFont != other.m_labelFont ||
+            m_labelPosition != other.m_labelPosition ||
+            !qFuzzyIsNull(m_labelArmLengthFactor - other.m_labelArmLengthFactor) ||
+            m_labelBrush != other.m_labelBrush)
+            return true;
+
+        if (!qFuzzyIsNull(m_percentage - other.m_percentage) ||
+            m_center != other.m_center ||
+            !qFuzzyIsNull(m_radius - other.m_radius) ||
+            !qFuzzyIsNull(m_startAngle - other.m_startAngle) ||
+            !qFuzzyIsNull(m_angleSpan - other.m_angleSpan))
+            return true;
+
+        return false;
+    }
+
+    qreal m_value;
+
+    Themed<QPen> m_slicePen;
+    Themed<QBrush> m_sliceBrush;
+
+    bool m_isExploded;
+    qreal m_explodeDistanceFactor;
+
+    bool m_isLabelVisible;
+    QString m_labelText;
+    Themed<QFont> m_labelFont;
+    QPieSlice::LabelPosition m_labelPosition;
+    qreal m_labelArmLengthFactor;
+    Themed<QBrush> m_labelBrush;
+
+    qreal m_percentage;
+    QPointF m_center;
+    qreal m_radius;
+    qreal m_startAngle;
+    qreal m_angleSpan;
+
+    qreal m_holeRadius;
+};
+
+QT_CHARTS_END_NAMESPACE
+
+#endif // PIESLICEDATA_P_H