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diff --git a/src/gui/rulers/TempoRuler.h b/src/gui/rulers/TempoRuler.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.
+
+    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_TEMPORULER_H_
+#define _RG_TEMPORULER_H_
+
+#include "gui/dialogs/TempoDialog.h"
+#include <kxmlguiclient.h>
+#include <qfont.h>
+#include <qfontmetrics.h>
+#include <qpixmap.h>
+#include <qsize.h>
+#include <qwidget.h>
+#include "base/Event.h"
+
+
+class QWheelEvent;
+class QPopupMenu;
+class QPaintEvent;
+class QMouseEvent;
+class QEvent;
+class KMainWindow;
+
+
+namespace Rosegarden
+{
+
+class TextFloat;
+class RulerScale;
+class RosegardenGUIDoc;
+class Composition;
+
+
+/**
+ * TempoRuler is a widget that shows a strip of tempo values at
+ * x-coordinates corresponding to tempo changes in a Composition.
+ */
+
+class TempoRuler : public QWidget, public KXMLGUIClient
+{
+    Q_OBJECT
+
+public:
+    /**
+     * Construct a TempoRuler that displays and allows editing of the
+     * tempo changes found in the given Composition, with positions
+     * calculated by the given RulerScale.
+     *
+     * The RulerScale will not be destroyed along with the TempoRuler.
+     */
+    TempoRuler(RulerScale *rulerScale,
+               RosegardenGUIDoc *doc,
+               KMainWindow *parentMainWindow,
+               double xorigin = 0.0,
+               int height = 0,
+               bool small = false,
+               QWidget* parent = 0,
+               const char *name = 0);
+
+    ~TempoRuler();
+    
+    virtual QSize sizeHint() const;
+    virtual QSize minimumSizeHint() const;
+
+    void setMinimumWidth(int width) { m_width = width; }
+
+    void connectSignals();
+
+signals:
+    void doubleClicked(timeT);
+
+    void changeTempo(timeT,  // tempo change time
+                     tempoT,  // tempo value
+                     tempoT,  // tempo target
+                     TempoDialog::TempoDialogAction); // tempo action
+
+    void moveTempo(timeT, // old time
+                   timeT); // new time
+
+    void deleteTempo(timeT);
+
+    void editTempo(timeT);
+    void editTimeSignature(timeT);
+    void editTempos(timeT);
+
+public slots:
+    void slotScrollHoriz(int x);
+
+protected slots:
+    void slotInsertTempoHere();
+    void slotInsertTempoAtPointer();
+    void slotDeleteTempoChange();
+    void slotRampToNext();
+    void slotUnramp();
+    void slotEditTempo();
+    void slotEditTimeSignature();
+    void slotEditTempos();
+
+protected:
+    virtual void paintEvent(QPaintEvent *);
+    virtual void enterEvent(QEvent *);
+    virtual void leaveEvent(QEvent *);
+    virtual void mousePressEvent(QMouseEvent *);
+    virtual void mouseReleaseEvent(QMouseEvent *);
+    virtual void mouseMoveEvent(QMouseEvent *);
+    virtual void wheelEvent(QWheelEvent *);
+
+    void createMenu();
+    
+private:
+    double m_xorigin;
+    int  m_height;
+    int  m_currentXOffset;
+    int  m_width;
+    bool m_small;
+    int  m_illuminate;
+    bool m_illuminatePoint;
+    bool m_illuminateTarget;
+    bool m_refreshLinesOnly;
+
+    bool m_dragVert;
+    bool m_dragTarget;
+    bool m_dragHoriz;
+    int  m_dragStartY;
+    int  m_dragStartX;
+    bool m_dragFine;
+    int  m_clickX;
+
+    timeT  m_dragStartTime;
+    timeT  m_dragPreviousTime;
+    tempoT m_dragStartTempo;
+    tempoT m_dragStartTarget;
+    tempoT m_dragOriginalTempo;
+    tempoT m_dragOriginalTarget;
+
+    int getYForTempo(tempoT tempo);
+    tempoT getTempoForY(int y);
+    void showTextFloat(tempoT tempo,
+                       tempoT target = -1,
+                       timeT time = -1,
+                       bool showTime = false);
+
+    Composition *m_composition;
+    RulerScale *m_rulerScale;
+    TextFloat *m_textFloat;
+    QPopupMenu *m_menu;
+    KMainWindow *m_parentMainWindow;
+
+    QFont m_font;
+    QFont m_boldFont;
+    QFontMetrics m_fontMetrics;
+    QPixmap m_buffer;
+};
+
+
+}
+
+#endif