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diff --git a/src/charts/scroller_p.h b/src/charts/scroller_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 SCROLLER_P_H
+#define SCROLLER_P_H
+
+#include "qchartglobal.h"
+#include <QBasicTimer>
+#include <QTime>
+#include <QPointF>
+
+class QGraphicsSceneMouseEvent;
+
+QT_CHARTS_BEGIN_NAMESPACE
+
+class Scroller;
+class QLegend;
+
+class ScrollTicker : public QObject
+{
+    Q_OBJECT
+public:
+    explicit ScrollTicker(Scroller *scroller, QObject *parent = 0);
+    void start(int interval);
+    void stop();
+protected:
+    void timerEvent(QTimerEvent *event);
+
+private:
+    QBasicTimer m_timer;
+    Scroller *m_scroller;
+};
+
+class Scroller
+{
+public:
+    enum State {
+        Idle,
+        Pressed,
+        Move,
+        Scroll
+    };
+
+    Scroller();
+    virtual ~Scroller();
+
+    virtual void setOffset(const QPointF &point) = 0;
+    virtual QPointF offset() const = 0;
+
+    void move(const QPointF &delta);
+    void scrollTo(const QPointF &delta);
+
+    void handleMousePressEvent(QGraphicsSceneMouseEvent *event);
+    void handleMouseMoveEvent(QGraphicsSceneMouseEvent *event);
+    void handleMouseReleaseEvent(QGraphicsSceneMouseEvent *event);
+
+    void scrollTick();
+
+private:
+    void startTicker(int interval);
+    void stopTicker();
+
+private:
+    void calculateSpeed(const QPointF &position);
+    void lowerSpeed(QPointF &speed, qreal maxSpeed = 100);
+
+private:
+    ScrollTicker m_ticker;
+    QTime m_timeStamp;
+    QPointF m_speed;
+    QPointF m_fraction;
+    int m_timeTresholdMin;
+    int m_timeTresholdMax;
+
+    State m_state;
+    QPointF m_pressPos;
+    QPointF m_lastPos;
+    qreal m_treshold;
+};
+
+QT_CHARTS_END_NAMESPACE
+
+#endif /* SCROLLER_P_H */