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/***************************************************************************
kpoti.h - Potentiometer Widget
-------------------
begin : Wed Apr 28 23:05:05 MEST 1999
copyright : (C) 1999 by Martin Lorenz
email : lorenz@ch.tum.de
(C) 2002 Matthias Kretz <kretz@kde.org>
***************************************************************************/
/***************************************************************************
* *
* 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 _KPOTI_H
#define _KPOTI_H
#include <tqframe.h>
#include <tqrangecontrol.h>
class QTimer;
struct QPotiData;
class KPoti : public TQFrame, public QRangeControl
{
Q_OBJECT
public:
KPoti( TQWidget *parent=0, const char *name=0 );
KPoti( int minValue, int maxValue, int step, int value,
TQWidget *parent=0, const char *name=0 );
~KPoti();
void setTracking( bool enable );
bool tracking() const;
void setColor( const TQColor & );
virtual void setTickmarks( bool );
virtual void setLabel( bool );
bool tickmarks() const { return ticks; }
virtual void setTickInterval( int );
int tickInterval() const { return tickInt; }
virtual TQSizePolicy sizePolicy() const;
virtual TQSize sizeHint() const;
virtual TQSize minimumSizeHint() const;
TQString text() const;
public slots:
void setValue( int );
void addStep();
void subtractStep();
void setText( const TQString & );
signals:
void valueChanged( int value );
void potiPressed();
void potiMoved( int value );
void potiReleased();
void mouseEntered(int value);
protected:
void resizeEvent( TQResizeEvent * );
void drawContents( TQPainter * );
void keyPressEvent( TQKeyEvent * );
void mousePressEvent( TQMouseEvent * );
void mouseReleaseEvent( TQMouseEvent * );
void mouseMoveEvent( TQMouseEvent * );
void enterEvent( TQEvent *);
void focusInEvent( TQFocusEvent *e );
void focusOutEvent( TQFocusEvent *e );
void valueChange();
void rangeChange();
virtual void paletteChange( const TQPalette & );
virtual void paintPoti( TQPainter * );
void drawButton( TQPainter *);
void drawTicks( TQPainter *, double, double, int=1 ) const;
virtual void wheelEvent(TQWheelEvent *e);
private slots:
void repeatTimeout();
private:
enum State { Idle, Dragging, TimingUp, TimingDown };
void init(int value=0);
float positionFromValue( int ) const;
int valueFromPosition( float ) const;
void movePoti( float );
void reallyMovePoti( float );
void resetState();
int potiRadius() const;
void initTicks();
QTimer *timer;
float potiPos;
int potiVal;
int clickOffset;
State state;
bool track;
bool ticks, m_bLabel;
int tickInt, space;
double buttonRadius;
private: // Disabled copy constructor and operator=
// KPoti( const KPoti & ) {}
//KPoti &operator=( const KPoti & ) { return *this; }
struct KPotiPrivate;
KPotiPrivate * d;
};
inline bool KPoti::tracking() const
{
return track;
}
#endif // _KPOTI_H
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