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diff --git a/src/gui/rulers/LoopRuler.h b/src/gui/rulers/LoopRuler.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   <glaurent@telegraph-road.org>,
+        Chris Cannam        <cannam@all-day-breakfast.com>,
+        Richard Bown        <richard.bown@ferventsoftware.com>
+
+    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
+    Bown to claim authorship of this work have been asserted.
+
+    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_LOOPRULER_H_
+#define _RG_LOOPRULER_H_
+
+#include "base/SnapGrid.h"
+#include "gui/general/HZoomable.h"
+#include <qsize.h>
+#include <qwidget.h>
+#include <qpen.h>
+#include "base/Event.h"
+
+
+class QPaintEvent;
+class QPainter;
+class QMouseEvent;
+
+
+namespace Rosegarden
+{
+
+class RulerScale;
+class RosegardenGUIDoc;
+
+
+/**
+ * LoopRuler is a widget that shows bar and beat durations on a
+ * ruler-like scale, and reacts to mouse clicks by sending relevant
+ * signals to modify position pointer and playback/looping states.
+*/
+class LoopRuler : public QWidget, public HZoomable
+{
+    Q_OBJECT
+
+public:
+    LoopRuler(RosegardenGUIDoc *doc,
+              RulerScale *rulerScale,
+              int height = 0,
+              double xorigin = 0.0,
+              bool invert = false,
+              QWidget* parent = 0,
+              const char *name = 0);
+
+    ~LoopRuler();
+
+    void setSnapGrid(SnapGrid *grid);
+
+    virtual QSize sizeHint() const;
+    virtual QSize minimumSizeHint() const;
+
+    void scrollHoriz(int x);
+
+    void setMinimumWidth(int width) { m_width = width; }
+
+    void setHorizScaleFactor(double dy) { m_hScaleFactor = dy; }
+
+    bool hasActiveMousePress() { return m_activeMousePress; }
+
+    bool getLoopingMode() { return m_loopingMode; }
+    
+public slots:
+    void slotSetLoopMarker(timeT startLoop,
+                           timeT endLoop);
+
+protected:
+    // ActiveItem interface
+    virtual void mousePressEvent       (QMouseEvent*);
+    virtual void mouseReleaseEvent     (QMouseEvent*);
+    virtual void mouseDoubleClickEvent (QMouseEvent*);
+    virtual void mouseMoveEvent        (QMouseEvent*);
+
+    virtual void paintEvent(QPaintEvent*);
+
+    void setLoopingMode(bool value) { m_loopingMode = value; }
+    void drawBarSections(QPainter*);
+    void drawLoopMarker(QPainter*);  // between loop positions
+
+signals:
+    // The three main functions that this class performs
+    //
+    /// Set the pointer position on mouse single click
+    void setPointerPosition(timeT);
+
+    /// Set the pointer position on mouse drag
+    void dragPointerToPosition(timeT);
+
+    /// Set pointer position and start playing on double click
+    void setPlayPosition(timeT);
+
+    /// Set a playing loop
+    void setLoop(timeT, timeT);
+
+    /// Set the loop end position on mouse drag
+    void dragLoopToPosition(timeT);
+
+    void startMouseMove(int directionConstraint);
+    void stopMouseMove();
+    void mouseMove();
+
+protected:
+
+    //--------------- Data members ---------------------------------
+    int  m_height;
+    double m_xorigin;
+    bool m_invert;
+    int  m_currentXOffset;
+    int  m_width;
+    bool m_activeMousePress;
+
+    RosegardenGUIDoc *m_doc;
+    bool m_mainWindow;
+    RulerScale *m_rulerScale;
+    SnapGrid    m_defaultGrid;
+    SnapGrid    m_loopGrid;
+    SnapGrid   *m_grid;
+    QPen        m_quickMarkerPen;
+    bool m_loopingMode;
+    timeT m_startLoop;
+    timeT m_endLoop;
+};
+
+
+}
+
+#endif