# qscrollbar.h

This is the verbatim text of the qscrollbar.h include file. It is is provided only for illustration; the copyright remains with Troll Tech.

    /****************************************************************************
    ** $Id: qscrollbar.h,v 2.7.2.2 1998/08/21 19:13:26 hanord Exp $
    **
    ** Definition of QScrollBar class
    **
    ** Created : 940427
    **
    ** Copyright (C) 1992-1999 Troll Tech AS.  All rights reserved.
    **
    ** This file is part of Qt Free Edition, version 1.45.
    **
    ** See the file LICENSE included in the distribution for the usage
    ** and distribution terms, or http://www.troll.no/free-license.html.
    **
    ** IMPORTANT NOTE: You may NOT copy this file or any part of it into
    ** your own programs or libraries.
    **
    ** Please see http://www.troll.no/pricing.html for information about
    ** Qt Professional Edition, which is this same library but with a
    ** license which allows creation of commercial/proprietary software.
    **
    *****************************************************************************/

    #ifndef QSCROLLBAR_H
    #define QSCROLLBAR_H

    #ifndef QT_H
    #include "qwidget.h"
    #include "qrangecontrol.h"
    #include "qdrawutil.h"
    #endif // QT_H

    class Q_EXPORT QScrollBar : public QWidget, public QRangeControl
    {
        Q_OBJECT
    public:
        enum Orientation { Horizontal, Vertical };

        QScrollBar( QWidget *parent=0, const char *name=0 );
        QScrollBar( Orientation, QWidget *parent=0, const char *name=0 );
        QScrollBar( int minValue, int maxValue, int LineStep, int PageStep,
                    int value, Orientation,
                    QWidget *parent=0, const char *name=0 );

        void        setOrientation( Orientation );
        Orientation orientation() const;
        void        setTracking( bool enable );
        bool        tracking() const;

        bool        draggingSlider() const;

        void        setPalette( const QPalette & );
        QSize       sizeHint() const;

    signals:
        void        valueChanged( int value );
        void        sliderPressed();
        void        sliderMoved( int value );
        void        sliderReleased();
        void        nextLine();
        void        prevLine();
        void        nextPage();
        void        prevPage();

    protected:
        void        timerEvent( QTimerEvent * );
        void        keyPressEvent( QKeyEvent * );
        void        resizeEvent( QResizeEvent * );
        void        paintEvent( QPaintEvent * );

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

        void        valueChange();
        void        stepChange();
        void        rangeChange();

        int         sliderStart() const;
        QRect       sliderRect() const;

    private:
        void        init();
        void        positionSliderFromValue();
        int         calculateValueFromSlider() const;

        uint        pressedControl   : 8;
        uint        track            : 1;
        uint        clickedAt        : 1;
        uint        orient           : 1;
        uint        thresholdReached : 1;
        uint        isTiming         : 1;

        int         slidePrevVal;
        QCOORD      sliderPos;
        QCOORD      clickOffset;

    private:        // Disabled copy constructor and operator=
    #if defined(Q_DISABLE_COPY)
        QScrollBar( const QScrollBar & );
        QScrollBar &operator=( const QScrollBar & );
    #endif
    };

    inline void QScrollBar::setTracking( bool t )
    {
        track = t;
    }

    inline bool QScrollBar::tracking() const
    {
        return track;
    }

    inline QScrollBar::Orientation QScrollBar::orientation() const
    {
        return (Orientation)orient;
    }

    inline int QScrollBar::sliderStart() const
    {
        return sliderPos;
    }

    void qDrawArrow( QPainter *, ArrowType type, GUIStyle style, bool down,
                     int x, int y, int w, int h, const QColorGroup & );

    #endif // QSCROLLBAR_H