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# ntqscrollbar.h

This is the verbatim text of the ntqscrollbar.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id: qt/ntqscrollbar.h   3.3.8   edited Jan 11 14:38 $
    **
    ** Definition of TQScrollBar class
    **
    ** Created : 940427
    **
    ** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
    **
    ** This file is part of the widgets module of the TQt GUI Toolkit.
    **
    ** This file may be used under the terms of the GNU General Public
    ** License versions 2.0 or 3.0 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file. Alternatively you may (at your option) use any
    ** later version of the GNU General Public License if such license has
    ** been publicly approved by Trolltech ASA (or its successors, if any)
    ** and the KDE Free TQt Foundation.
    **
    ** Please review the following information to ensure GNU General
    ** Public Licensing requirements will be met:
    ** http://trolltech.com/products/qt/licenses/licensing/opensource/.
    ** If you are unsure which license is appropriate for your use, please
    ** review the following information:
    ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
    ** or contact the sales department at sales@trolltech.com.
    **
    ** This file may be used under the terms of the Q Public License as
    ** defined by Trolltech ASA and appearing in the file LICENSE.TQPL
    ** included in the packaging of this file.  Licensees holding valid TQt
    ** Commercial licenses may use this file in accordance with the TQt
    ** Commercial License Agreement provided with the Software.
    **
    ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
    ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
    ** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted
    ** herein.
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    **********************************************************************/

    #ifndef TQSCROLLBAR_H
    #define TQSCROLLBAR_H

    class TQTimer;

    #ifndef QT_H
    #include "ntqwidget.h"
    #include "ntqrangecontrol.h"
    #endif // QT_H

    #ifndef TQT_NO_SCROLLBAR

    class TQ_EXPORT TQScrollBar : public TQWidget, public TQRangeControl
    {
        TQ_OBJECT
        TQ_PROPERTY( int minValue READ minValue WRITE setMinValue )
        TQ_PROPERTY( int maxValue READ maxValue WRITE setMaxValue )
        TQ_PROPERTY( int lineStep READ lineStep WRITE setLineStep )
        TQ_PROPERTY( int pageStep READ pageStep WRITE setPageStep )
        TQ_PROPERTY( int value READ value WRITE setValue )
        TQ_PROPERTY( bool tracking READ tracking WRITE setTracking )
        TQ_PROPERTY( bool draggingSlider READ draggingSlider )
        TQ_PROPERTY( Orientation orientation READ orientation WRITE setOrientation )

    public:
        TQScrollBar( TQWidget *parent, const char* name = 0 );
        TQScrollBar( Orientation, TQWidget *parent, const char* name = 0 );
        TQScrollBar( int minValue, int maxValue, int lineStep, int pageStep,
    		int value, Orientation, TQWidget *parent, const char* name = 0 );
        ~TQScrollBar();

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

        virtual void setPalette( const TQPalette & );
        virtual TQSize sizeHint() const;
        virtual void setSizePolicy( TQSizePolicy sp );
        void setSizePolicy( TQSizePolicy::SizeType hor, TQSizePolicy::SizeType ver, bool hfw = FALSE );

        int	 minValue() const;
        int	 maxValue() const;
        void setMinValue( int );
        void setMaxValue( int );
        int	 lineStep() const;
        int	 pageStep() const;
        void setLineStep( int );
        void setPageStep( int );
        int  value() const;

        int		sliderStart() const;
        TQRect	sliderRect() const;

    public slots:
        void setValue( int );

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

    protected:
    #ifndef TQT_NO_WHEELEVENT
        void 	wheelEvent( TQWheelEvent * );
    #endif
        void	keyPressEvent( TQKeyEvent * );
        void	resizeEvent( TQResizeEvent * );
        void	paintEvent( TQPaintEvent * );

        void	mousePressEvent( TQMouseEvent * );
        void	mouseReleaseEvent( TQMouseEvent * );
        void	mouseMoveEvent( TQMouseEvent * );
        void	contextMenuEvent( TQContextMenuEvent * );
        void	hideEvent( TQHideEvent* );

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

        void	styleChange( TQStyle& );

    private slots:
        void doAutoRepeat();

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

        void startAutoRepeat();
        void stopAutoRepeat();

        int rangeValueToSliderPos( int val ) const;
        int sliderPosToRangeValue( int val ) const;

        void action( int control );

        void drawControls( uint controls, uint activeControl ) const;
        void drawControls( uint controls, uint activeControl,
    		       TQPainter *p ) const;

        uint pressedControl;
        bool track;
        bool clickedAt;
        Orientation orient;

        int slidePrevVal;
        TQCOORD sliderPos;
        TQCOORD clickOffset;

        TQTimer * repeater;
        void * d;

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

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

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

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

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

    inline void TQScrollBar::setSizePolicy( TQSizePolicy::SizeType hor, TQSizePolicy::SizeType ver, bool hfw )
    {
        TQWidget::setSizePolicy( hor, ver, hfw );
    }

    #endif // TQT_NO_SCROLLBAR

    #endif // TQSCROLLBAR_H