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diff --git a/src/libs/qtcomponents/styleitem/qrangemodel_p.h b/src/libs/qtcomponents/styleitem/qrangemodel_p.h
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+/**************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2011 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact: Nokia Corporation (info@qt.nokia.com)
+**
+**
+** GNU Lesser General Public License Usage
+**
+** 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 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** Other Usage
+**
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at info@qt.nokia.com.
+**
+**************************************************************************/
+
+#ifndef QRANGEMODEL_P_H
+#define QRANGEMODEL_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt Components 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.
+//
+
+#include "qrangemodel.h"
+
+class QRangeModelPrivate
+{
+    Q_DECLARE_PUBLIC(QRangeModel)
+public:
+    QRangeModelPrivate(QRangeModel *qq);
+    virtual ~QRangeModelPrivate();
+
+    void init();
+
+    qreal posatmin, posatmax;
+    qreal minimum, maximum, stepSize, pos, value;
+
+    uint inverted : 1;
+
+    QRangeModel *q_ptr;
+
+    inline qreal effectivePosAtMin() const {
+        return inverted ? posatmax : posatmin;
+    }
+
+    inline qreal effectivePosAtMax() const {
+        return inverted ? posatmin : posatmax;
+    }
+
+    inline qreal equivalentPosition(qreal value) const {
+        // Return absolute position from absolute value
+        const qreal valueRange = maximum - minimum;
+        if (valueRange == 0)
+            return effectivePosAtMin();
+
+        const qreal scale = (effectivePosAtMax() - effectivePosAtMin()) / valueRange;
+        return (value - minimum) * scale + effectivePosAtMin();
+    }
+
+    inline qreal equivalentValue(qreal pos) const {
+        // Return absolute value from absolute position
+        const qreal posRange = effectivePosAtMax() - effectivePosAtMin();
+        if (posRange == 0)
+            return minimum;
+
+        const qreal scale = (maximum - minimum) / posRange;
+        return (pos - effectivePosAtMin()) * scale + minimum;
+    }
+
+    qreal publicPosition(qreal position) const;
+    qreal publicValue(qreal value) const;
+    void emitValueAndPositionIfChanged(const qreal oldValue, const qreal oldPosition);
+};
+
+#endif // QRANGEMODEL_P_H