//=========================================================
//  MusE
//  Linux Music Editor
//    $Id: scrollscale.h,v 1.1.1.1 2003/10/29 10:06:22 wschweer Exp $
//  (C) Copyright 1999 Werner Schweer (ws@seh.de)
//=========================================================

#ifndef __SCROLLSCALE_H__
#define __SCROLLSCALE_H__

#include <qwidget.h>
#include <qslider.h>

// class QSlider;
class QScrollBar;
class QBoxLayout;
class QToolButton;
class QLabel;

//---------------------------------------------------------
//   ScrollScale
//---------------------------------------------------------

class ScrollScale : public QWidget {
      QSlider* scale;
      QScrollBar* scroll;
      int minVal, maxVal;
      int scaleVal, scaleMin, scaleMax;
      bool showMagFlag;
      QBoxLayout* box;
      bool noScale;
      bool pageButtons;
      int _page;
      int _pages;
      QToolButton* up;
      QToolButton* down;
      QLabel* pageNo;
      bool invers;
      double logbase;

      virtual void resizeEvent(QResizeEvent*);
      Q_OBJECT

   private slots:
      void pageUp();
      void pageDown();

   public slots:
      void setPos(int);
      void setMag(int);
      void setOffset(int val);
      void setScale(int);

   signals:
      void scaleChanged(int);
      void lscaleChanged(int);
      void scrollChanged(int);
      void newPage(int);

   public:
      ScrollScale(int, int, int, int max, Orientation,
         QWidget*, int min = 0, bool i=false, double vv = 10.0);
      int xmag() const      { return scale->value(); }
      void setXmag(int val) { scale->setValue(val); }
      void setRange(int, int);
      void showMag(bool);
      void setNoScale(bool flag) { noScale = flag; }
      void setPageButtons(bool flag);
      void setPage(int n) { _page = n; }
      int page() const { return _page; }
      int pages() const { return _pages; }
      void setPages(int n);
      int pos() const;
      int mag() const;
      int getScaleValue() const { return scaleVal; }
      void range(int* b, int* e) const { *b = minVal; *e = maxVal; }
      };

#endif

