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diff --git a/src/gui/rulers/VelocityColour.h b/src/gui/rulers/VelocityColour.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_VELOCITYCOLOUR_H_
+#define _RG_VELOCITYCOLOUR_H_
+
+#include <qcolor.h>
+
+
+
+
+namespace Rosegarden
+{
+
+
+
+/**
+ * Returns a QColour according to a formula.  We provide three colours
+ * to mix, a maximum value and three knees at which points the
+ * intermediate colours max out.  Play around to your satisfaction.
+ */
+class VelocityColour
+{
+
+public:
+    VelocityColour(const QColor &loud,
+                   const QColor &medium,
+                   const QColor &quiet,
+                   int maxValue,
+                   int loudKnee,
+                   int mediumKnee,
+                   int quietKnee);
+    ~VelocityColour();
+
+    const QColor& getColour(int value);
+
+    int getLoudKnee() const { return m_loudKnee; }
+    int getMediumKnee() const { return m_mediumKnee; }
+    int getQuietKnee() const { return m_quietKnee; }
+
+    QColor getLoudColour() const { return m_loudColour; }
+    QColor getMediumColour() const { return m_mediumColour; }
+    QColor getQuietColour() const { return m_quietColour; }
+
+    int getMaxValue() const { return m_maxValue; }
+
+private:
+
+    QColor m_loudColour;
+    QColor m_mediumColour;
+    QColor m_quietColour;
+    int    m_loudKnee;
+    int    m_mediumKnee;
+    int    m_quietKnee;
+    int    m_maxValue;
+
+    // the mixed colour that we can return
+    QColor m_mixedColour;
+
+
+    int m_loStartRed;
+    int m_loStartGreen;
+    int m_loStartBlue;
+
+    int m_loStepRed;
+    int m_loStepGreen;
+    int m_loStepBlue;
+
+    int m_hiStartRed;
+    int m_hiStartGreen;
+    int m_hiStartBlue;
+
+    int m_hiStepRed;
+    int m_hiStepGreen;
+    int m_hiStepBlue;
+
+
+    int m_multiplyFactor;
+};
+
+
+}
+
+#endif