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diff --git a/src/gui/widgets/ScrollBox.h b/src/gui/widgets/ScrollBox.h
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+
+/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */
+
+/*
+    Rosegarden
+    A MIDI and audio sequencer and musical notation editor.
+
+    This program is Copyright 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+
+    This file is based on code from KGhostView, Copyright 1997-2002
+        Markkhu Hihnala     <[email protected]>
+        and the KGhostView authors.
+
+    Other copyrights also apply to some parts of this work.  Please
+    see the AUTHORS file and individual file headers for details.
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of the GNU General Public License as
+    published by the Free Software Foundation; either version 2 of the
+    License, or (at your option) any later version.  See the file
+    COPYING included with this distribution for more information.
+*/
+
+#ifndef _RG_SCROLLBOX_H_
+#define _RG_SCROLLBOX_H_
+
+#include <qframe.h>
+#include <qpixmap.h>
+#include <qpoint.h>
+#include <qsize.h>
+
+
+class QWidget;
+class QPainter;
+class QMouseEvent;
+
+
+namespace Rosegarden
+{
+
+class ScrollBox: public QFrame
+{
+    Q_OBJECT
+
+public:
+    enum SizeMode { FixWidth, FixHeight };
+
+    ScrollBox(QWidget *parent = 0,
+              SizeMode mode = FixWidth,
+              const char *name = 0);
+
+public slots:
+    void setPageSize(const QSize&);
+    void setViewSize(const QSize&);
+    void setViewPos(const QPoint&);
+    void setViewPos(int x, int y) { setViewPos(QPoint(x, y)); }
+    void setViewX(int x);
+    void setViewY(int y);
+    void setThumbnail(QPixmap img);
+
+signals:
+    void valueChanged(const QPoint&);
+    void valueChangedRelative(int dx, int dy);
+    void button2Pressed();
+    void button3Pressed();
+
+protected:
+    void mousePressEvent(QMouseEvent *);
+    void mouseMoveEvent(QMouseEvent *);
+    void drawContents(QPainter *);
+
+private:
+    QPoint   m_viewpos;
+    QPoint   m_mouse;
+    QSize    m_pagesize;
+    QSize    m_viewsize;
+    SizeMode m_sizeMode;
+};
+
+
+}
+
+#endif