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IgSoQtThumbWheel.h

Go to the documentation of this file.

/**************************************************************************
 *
 *  This file is part of the Coin SoQt GUI binding library.
 *  Copyright (C) 1998-2000 by Systems in Motion.  All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU Lesser General Public License version
 *  2.1 as published by the Free Software Foundation.  See the file
 *  LICENSE.LGPL at the root directory of the distribution for all the
 *  details.
 *
 *  If you want to use Coin SoQt for applications not compatible with the
 *  LGPL, please contact SIM to acquire a Professional Edition License.
 *
 *  Systems in Motion, Prof Brochs gate 6, N-7030 Trondheim, NORWAY
 *  https://www.sim.no/ support@sim.no Voice: +47 22114160 Fax: +47 22207097
 *
 **************************************************************************/

//  $Id: IgSoQtThumbWheel.h,v 1.1 2007/04/02 15:25:35 yana Exp $

#ifndef IGSOQT_THUMBWHEEL_H
#define IGSOQT_THUMBWHEEL_H

#include "Iguana/Studio/interface/config.h"

#include <qwidget.h>
#include <qrangecontrol.h>

class QPixmap;
class IgSoAnyThumbWheel;

// *************************************************************************

class IGUANA_STUDIO_API IgSoQtThumbWheel : public QWidget, public QRangeControl
{
  Q_OBJECT

public:
  enum Orientation { Horizontal, Vertical };

  IgSoQtThumbWheel( QWidget * parent = 0, const char * name = 0 );
  IgSoQtThumbWheel( Orientation, QWidget * parent = 0, const char * name = 0 );
  ~IgSoQtThumbWheel(void);

  void setOrientation( Orientation );
  Orientation orientation(void) const;

  void setValue( float value );
  float value(void) const;

  void setEnabled( bool enable );
  bool isEnabled(void) const;

  enum boundaryHandling {
    CLAMP,
    MODULATE,
    ACCUMULATE
  };
  void setRangeBoundaryHandling( boundaryHandling handling );
  boundaryHandling getRangeBoundaryHandling(void) const;

  QSize sizeHint(void) const;

signals:
  void wheelPressed(void);
  void wheelMoved(float value);
  void wheelReleased(void);

protected:
  void paintEvent(QPaintEvent *);

  void mousePressEvent(QMouseEvent *);
  void mouseReleaseEvent(QMouseEvent *);
  void mouseMoveEvent(QMouseEvent *);

private:
  void constructor( Orientation );

  IgSoQtThumbWheel( const IgSoQtThumbWheel & wheel );
  IgSoQtThumbWheel & operator = ( const IgSoQtThumbWheel & wheel );

  enum State { Idle, Dragging, Disabled } state;

  Orientation orient;
  float wheelValue, tempWheelValue;
  int mouseDownPos, mouseLastPos;

  void initWheel( int diameter, int width );

  IgSoAnyThumbWheel * wheel;
  QPixmap ** pixmaps;
  int numPixmaps;
  int currentPixmap;

}; // class IgSoQtThumbWheel

// *************************************************************************

#endif // ! IGSOQT_THUMBWHEEL_H

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