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/***************************************************************************
wknob.h - description
-------------------
begin : Fri Jun 21 2002
copyright : (C) 2002 by Tue & Ken Haste Andersen
email : haste@diku.dk
***************************************************************************/
/***************************************************************************
* *
* 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. *
* *
***************************************************************************/
#ifndef WKNOB_H
#define WKNOB_H
#include "wwidget.h"
#include <qpixmap.h>
#include <qstring.h>
/**
*@author Tue & Ken Haste Andersen
*/
class WKnob : public WWidget {
Q_OBJECT
public:
WKnob(QWidget *parent=0, const char *name=0);
~WKnob();
void setup(QDomNode node);
void setPositions(int iNoPos, bool bIncludingDisabled=false);
void setPixmap(int iPos, const QString &filename);
/** Associates a background pixmap with the widget. This is only needed if the knob
* pixmaps contains alpha channel values. */
void setPixmapBackground(const QString &filename);
/** Resets the widgets value */
void reset();
private:
/** Set position number to zero and deallocate pixmaps */
void resetPositions();
void mouseMoveEvent(QMouseEvent *e);
void mousePressEvent(QMouseEvent *e);
void mouseReleaseEvent(QMouseEvent *e);
void paintEvent(QPaintEvent *);
/** Current position */
int m_iPos;
/** Number of positions associated with this knob */
int m_iNoPos;
/** Array of associated pixmaps */
QPixmap **m_pPixmaps;
/** Associated background pixmap */
QPixmap *m_pPixmapBack;
/** Double buffer. Used when background pixmap is set */
QPixmap *m_pPixmapBuffer;
/** Values used when pressing mouse */
double m_dStartValue;
/** True if disabled pixmaps is loaded */
bool m_bDisabledLoaded;
};
#endif
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