Qt Toolkit - qslider.h include file

# qslider.h

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

    /****************************************************************************
    ** $Id: qslider.h,v 2.24.2.3 1998/08/21 19:13:26 hanord Exp $
    **
    ** Definition of QSlider class
    **
    ** Created : 961019
    **
    ** 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 QSLIDER_H
    #define QSLIDER_H

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

    class QTimer;
    struct QSliderData;

    class Q_EXPORT QSlider : public QWidget, public QRangeControl
    {
        Q_OBJECT
    public:
        enum Orientation { Horizontal, Vertical };
        enum TickSetting { NoMarks = 0, Above = 1, Left = Above,
                           Below = 2, Right = Below, Both = 3 };

        QSlider( QWidget *parent=0, const char *name=0 );
        QSlider( Orientation, QWidget *parent=0, const char *name=0 );
        QSlider( int minValue, int maxValue, 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;

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

        virtual void setTickmarks( TickSetting );
        TickSetting tickmarks() const { return ticks; }

        virtual void setTickInterval( int );
        int         tickInterval() const { return tickInt; }

    public slots:
        void        setValue( int );
        void        addStep();
        void        subtractStep();

    signals:
        void        valueChanged( int value );
        void        sliderPressed();
        void        sliderMoved( int value );
        void        sliderReleased();

    protected:
        void        resizeEvent( QResizeEvent * );
        void        paintEvent( QPaintEvent * );

        void        keyPressEvent( QKeyEvent * );
        void        mousePressEvent( QMouseEvent * );
        void        mouseReleaseEvent( QMouseEvent * );
        void        mouseMoveEvent( QMouseEvent * );
        void        focusInEvent( QFocusEvent *e );

        void        valueChange();
        void        rangeChange();

        virtual void paintSlider( QPainter *, const QRect & );
        void        drawWinGroove( QPainter *, QCOORD );
        void        drawTicks( QPainter *, int, int, int=1 ) const;

        virtual int thickness() const;

    private slots:
        void        repeatTimeout();

    private:
        enum State { Idle, Dragging, TimingUp, TimingDown };

        void        init();
        int         positionFromValue( int ) const;
        int         valueFromPosition( int ) const;
        void        moveSlider( int );
        void        reallyMoveSlider( int );
        void        resetState();
        int         slideLength() const;
        int         available() const;
        int         goodPart( const QPoint& ) const;
        void        initTicks();

        QSliderData *extra;
        QTimer      *timer;
        QCOORD      sliderPos;
        int         sliderVal;
        QCOORD      clickOffset;
        State       state;
        bool        track;
        QCOORD      tickOffset;
        TickSetting ticks;
        int         tickInt;
        Orientation orient;

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

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

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

    #endif // QSLIDER_H