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diff --git a/src/datavisualization/utils/camerahelper_p.h b/src/datavisualization/utils/camerahelper_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2013 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 QtDataVisualization module.
+**
+** 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
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the QtDataVisualization 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 CAMERAPOSITIONER_P_H
+#define CAMERAPOSITIONER_P_H
+
+#include "datavisualizationglobal_p.h"
+#include "q3dbars.h"
+#include <QObject>
+
+class QMatrix4x4;
+class QVector3D;
+class QPoint;
+class QPointF;
+
+QT_DATAVISUALIZATION_BEGIN_NAMESPACE
+
+class CameraHelper : public QObject
+{
+    Q_OBJECT
+
+private:
+    QVector3D m_position;
+    QVector3D m_target;
+    QVector3D m_up;
+
+    QPoint m_previousMousePos;
+
+    GLfloat m_xRotation;
+    GLfloat m_yRotation;
+    GLfloat m_defaultXRotation;
+    GLfloat m_defaultYRotation;
+
+    GLfloat m_rotationSpeed;
+
+public:
+    explicit CameraHelper(QObject *parent = 0);
+    ~CameraHelper();
+
+    // How fast camera rotates when mouse is dragged. Default is 100.
+    void setRotationSpeed(int speed);
+    // Set camera rotation in degrees
+    void setCameraRotation(const QPointF &rotation);
+    // Get camera rotations
+    QPointF getCameraRotations();
+    // Set default camera orientation. Position's x and y should be 0.
+    void setDefaultCameraOrientation(const QVector3D &defaultPosition,
+                                            const QVector3D &defaultTarget,
+                                            const QVector3D &defaultUp);
+    // Calculate view matrix based on rotation and zoom
+    QMatrix4x4 calculateViewMatrix(const QPoint &mousePos, int zoom,
+                                          int screenWidth, int screenHeight,
+                                          bool showUnder = false);
+    // Calcluate light position based on rotation. Call after calling calculateViewMatrix to get
+    // up-to-date position
+    QVector3D calculateLightPosition(const QVector3D &lightPosition,
+                                            GLfloat fixedRotation = 0.0f,
+                                            GLfloat distanceModifier = 0.0f);
+    void updateMousePos(const QPoint &mousePos);
+    void setCameraPreset(QDataVis::CameraPreset preset);
+};
+
+QT_DATAVISUALIZATION_END_NAMESPACE
+
+#endif