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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 <qframe.h>
+#include <qrangecontrol.h>
+
+
+class QTimer;
+struct QPotiData;
+
+
+class KPoti : public QFrame, public QRangeControl
+{
+ Q_OBJECT
+public:
+
+ KPoti( QWidget *parent=0, const char *name=0 );
+ KPoti( int minValue, int maxValue, int step, int value,
+ QWidget *parent=0, const char *name=0 );
+
+ ~KPoti();
+
+ void setTracking( bool enable );
+ bool tracking() const;
+
+ void setColor( const QColor & );
+
+ virtual void setTickmarks( bool );
+ virtual void setLabel( bool );
+ bool tickmarks() const { return ticks; }
+
+ virtual void setTickInterval( int );
+ int tickInterval() const { return tickInt; }
+
+ virtual QSizePolicy sizePolicy() const;
+ virtual QSize sizeHint() const;
+ virtual QSize minimumSizeHint() const;
+ QString text() const;
+
+public slots:
+ void setValue( int );
+ void addStep();
+ void subtractStep();
+ void setText( const QString & );
+
+signals:
+ void valueChanged( int value );
+ void potiPressed();
+ void potiMoved( int value );
+ void potiReleased();
+ void mouseEntered(int value);
+
+protected:
+ void resizeEvent( QResizeEvent * );
+ void drawContents( QPainter * );
+
+ void keyPressEvent( QKeyEvent * );
+
+ void mousePressEvent( QMouseEvent * );
+ void mouseReleaseEvent( QMouseEvent * );
+ void mouseMoveEvent( QMouseEvent * );
+ void enterEvent( QEvent *);
+
+ void focusInEvent( QFocusEvent *e );
+ void focusOutEvent( QFocusEvent *e );
+
+ void valueChange();
+ void rangeChange();
+
+ virtual void paletteChange( const QPalette & );
+
+ virtual void paintPoti( QPainter * );
+ void drawButton( QPainter *);
+ void drawTicks( QPainter *, double, double, int=1 ) const;
+
+ virtual void wheelEvent(QWheelEvent *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
+
+
+