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diff --git a/src/gui/editors/matrix/MatrixStaff.h b/src/gui/editors/matrix/MatrixStaff.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_MATRIXSTAFF_H_
+#define _RG_MATRIXSTAFF_H_
+
+#include "base/Staff.h"
+#include "gui/general/LinedStaff.h"
+#include "base/Event.h"
+
+
+class QCanvas;
+
+
+namespace Rosegarden
+{
+
+class ViewElement;
+class SnapGrid;
+class Segment;
+class MidiKeyMapping;
+class MatrixView;
+class MatrixElement;
+class Event;
+
+
+class MatrixStaff : public LinedStaff
+{
+public:
+    MatrixStaff(QCanvas *canvas,
+                Segment *segment, 
+                SnapGrid *snapGrid,
+                int id, 
+                int vResolution,
+                MatrixView *view);
+    virtual ~MatrixStaff();
+
+protected:
+    virtual int getLineCount() const;
+    virtual int getLegerLineCount() const;
+    virtual int getBottomLineHeight() const;
+    virtual int getHeightPerLine() const;
+    virtual bool elementsInSpaces() const;
+    virtual bool showBeatLines() const;
+
+    const MidiKeyMapping *getKeyMapping() const;
+
+    /**
+     * Override from Staff<T>
+     * Wrap only notes 
+     */
+    virtual bool wrapEvent(Event*);
+
+    /**
+     * Override from Staff<T>
+     * Let tools know if their current element has gone
+     */
+    virtual void eventRemoved(const Segment *, Event *);
+
+    virtual ViewElement* makeViewElement(Event*);
+
+public:
+    LinedStaff::setResolution;
+
+//     double getTimeScaleFactor() const { return m_scaleFactor * 2; } // TODO: GROSS HACK to enhance matrix resolution (see also in matrixview.cpp) - BREAKS MATRIX VIEW, see bug 1000595
+    double getTimeScaleFactor() const { return m_scaleFactor; }
+    void setTimeScaleFactor(double f) { m_scaleFactor = f; }
+
+    int getElementHeight() { return m_resolution; }
+
+    virtual void positionElements(timeT from,
+                                  timeT to);
+
+    virtual void positionElement(ViewElement*);
+
+    // Get an element for an Event
+    //
+    MatrixElement* getElement(Event *event);
+
+private:
+    double m_scaleFactor;
+
+    MatrixView     *m_view;
+};
+
+
+}
+
+#endif