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137 lines
3.6 KiB
137 lines
3.6 KiB
/***************************************************************************
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kpoti.h - Potentiometer Widget
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-------------------
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begin : Wed Apr 28 23:05:05 MEST 1999
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copyright : (C) 1999 by Martin Lorenz
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email : lorenz@ch.tum.de
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(C) 2002 Matthias Kretz <kretz@kde.org>
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#ifndef _KPOTI_H
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#define _KPOTI_H
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#include <qframe.h>
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#include <qrangecontrol.h>
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class QTimer;
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struct QPotiData;
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class KPoti : public QFrame, public QRangeControl
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{
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Q_OBJECT
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public:
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KPoti( QWidget *parent=0, const char *name=0 );
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KPoti( int minValue, int maxValue, int step, int value,
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QWidget *parent=0, const char *name=0 );
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~KPoti();
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void setTracking( bool enable );
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bool tracking() const;
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void setColor( const QColor & );
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virtual void setTickmarks( bool );
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virtual void setLabel( bool );
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bool tickmarks() const { return ticks; }
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virtual void setTickInterval( int );
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int tickInterval() const { return tickInt; }
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virtual QSizePolicy sizePolicy() const;
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virtual QSize sizeHint() const;
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virtual QSize minimumSizeHint() const;
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QString text() const;
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public slots:
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void setValue( int );
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void addStep();
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void subtractStep();
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void setText( const QString & );
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signals:
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void valueChanged( int value );
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void potiPressed();
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void potiMoved( int value );
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void potiReleased();
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void mouseEntered(int value);
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protected:
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void resizeEvent( QResizeEvent * );
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void drawContents( QPainter * );
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void keyPressEvent( QKeyEvent * );
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void mousePressEvent( QMouseEvent * );
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void mouseReleaseEvent( QMouseEvent * );
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void mouseMoveEvent( QMouseEvent * );
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void enterEvent( QEvent *);
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void focusInEvent( QFocusEvent *e );
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void focusOutEvent( QFocusEvent *e );
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void valueChange();
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void rangeChange();
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virtual void paletteChange( const QPalette & );
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virtual void paintPoti( QPainter * );
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void drawButton( QPainter *);
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void drawTicks( QPainter *, double, double, int=1 ) const;
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virtual void wheelEvent(QWheelEvent *e);
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private slots:
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void repeatTimeout();
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private:
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enum State { Idle, Dragging, TimingUp, TimingDown };
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void init(int value=0);
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float positionFromValue( int ) const;
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int valueFromPosition( float ) const;
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void movePoti( float );
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void reallyMovePoti( float );
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void resetState();
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int potiRadius() const;
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void initTicks();
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QTimer *timer;
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float potiPos;
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int potiVal;
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int clickOffset;
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State state;
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bool track;
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bool ticks, m_bLabel;
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int tickInt, space;
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double buttonRadius;
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private: // Disabled copy constructor and operator=
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// KPoti( const KPoti & ) {}
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//KPoti &operator=( const KPoti & ) { return *this; }
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struct KPotiPrivate;
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KPotiPrivate * d;
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};
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inline bool KPoti::tracking() const
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{
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return track;
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}
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#endif // _KPOTI_H
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