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diff --git a/muse_qt4_evolution/muse/arranger.h b/muse_qt4_evolution/muse/arranger.h
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+++ b/muse_qt4_evolution/muse/arranger.h
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+//=============================================================================
+//  MusE
+//  Linux Music Editor
+//  $Id:$
+//
+//  Copyright (C) 2002-2006 by Werner Schweer and others
+//
+//  This program is free software; you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License version 2.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+//=============================================================================
+
+#ifndef __ARRANGER_H__
+#define __ARRANGER_H__
+
+#include "widgets/tools.h"
+#include "track.h"
+
+namespace AL {
+      class Xml;
+      class Pos;
+      };
+using AL::Xml;
+class AL::Pos;
+
+class Track;
+class TrackInfo;
+class TLWidget;
+class TLSWidget;
+class PartCanvas;
+class Part;
+class SimpleButton;
+class Strip;
+class ArrangerTrack;
+class Splitter;
+class TlsvLayout;
+class TLayout;
+
+//---------------------------------------------------------
+//   InfoStack
+//---------------------------------------------------------
+
+class InfoStack : public QStackedWidget {
+      Q_OBJECT;
+
+      virtual QSize sizeHint() const;
+
+   public:
+      InfoStack() : QStackedWidget() {}
+      };
+
+//---------------------------------------------------------
+//   TrackListWidget
+//---------------------------------------------------------
+
+class TrackListWidget : public QWidget {
+      Q_OBJECT
+
+      void mousePressEvent(QMouseEvent*);
+      void wheelEvent(QWheelEvent*);
+      virtual void paintEvent(QPaintEvent*);
+
+   signals:
+      void mouseWheel(QWheelEvent*);
+
+   public:
+      TrackListWidget(QWidget* parent = 0);
+      };
+
+//---------------------------------------------------------
+//   Arranger
+//---------------------------------------------------------
+
+class Arranger : public QWidget {
+      Q_OBJECT
+
+      QAction* infoDockAction;
+      QAction* mixerDockAction;
+
+      TrackInfo* trackInfos[Track::TRACK_TYPES];
+      QWidget* zeroTrackInfo;
+      Tool tool;
+      QWidget* trackList;
+      PartCanvas* canvas;
+      TLayout* tl;               // tracklist layout
+      TrackListWidget* tlsv;
+      TlsvLayout* tlsvLayout;
+      QDialog* configTrackEditor;
+      QStackedWidget* trackInfo;
+      QScrollArea* infoView;
+      Track* _curTrack;             // current selected track
+      SimpleButton* gmute;
+      SimpleButton* gsolo;
+      SimpleButton* gar;
+      SimpleButton* gaw;
+      Strip* strip;
+      QStackedWidget* info;
+
+      Splitter* split;
+      QDockWidget* infoDock;
+      QDockWidget* mixerDock;
+
+      int startH;    // start value for resize track height
+
+      bool trackInfoVisible;
+      bool mixerStripVisible;
+
+      void updateIndex();
+      TrackInfo* createTrackInfo();
+      int tlIndex(Track*) const;
+      int tlIndex(ArrangerTrack* t) const;
+      bool initSubtrack(Track* t, ArrangerTrack*);
+      ArrangerTrack* atrack(int idx);
+      void insertTrack1(Track*);
+
+   private slots:
+      void startDrag(int idx);
+      void drag(int idx, int);
+      void setTLViewPos(int, int);
+      void appendSubtrack(TLWidget*);
+      void removeSubtrack(TLSWidget*);
+      void configTrackList();
+      void toggleTrackInfo(bool);
+      void toggleMixerStrip(bool);
+      void setGMute();
+      void setGSolo();
+      void setGar();
+      void setGaw();
+      void offGMute();
+      void offGSolo();
+      void offGar();
+      void offGaw();
+      void setSelectedTrack(Track*);
+      void moveTrack(Track* src, Track* dst);
+      void kbdMovementUpdate(Track* t, Part* p);
+      void mouseWheel(QWheelEvent*);
+      void setPos(int, const AL::Pos&);
+      void addMarker(const AL::Pos&);
+      void removeMarker(const AL::Pos&);
+
+   public slots:
+      void insertTrack(Track*);
+      void removeTrack(Track*);
+      void setTool(int t);
+      void updateConfiguration();
+      void startLoadSong();
+
+   signals:
+      void configChanged();
+      void toolChanged(int);
+      void editPart(Part*);
+      void cursorPos(const AL::Pos&,bool);
+
+   public:
+      Arranger(QMainWindow* parent = 0);
+      void readStatus(QDomNode);
+      void writeStatus(Xml&);
+      Track* curTrack() const { return _curTrack; }
+      void endLoadSong();
+      Strip* getStrip() const { return strip;  }
+
+   protected:
+      virtual void keyPressEvent(QKeyEvent* e);
+      };
+
+#endif
+