# ntqdial.h Include File

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# ntqdial.h

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

    /****************************************************************************
    ** $Id: qt/ntqdial.h   3.3.8   edited Jan 11 14:46 $
    **
    ** Definition of the dial widget
    **
    ** Created : 990104
    **
    ** Copyright (C) 1999-2007 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.
    **
    **********************************************************************/

    #ifndef TQDIAL_H
    #define TQDIAL_H

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

    #ifndef TQT_NO_DIAL

    class TQDialPrivate;

    class TQ_EXPORT TQDial: public TQWidget, public TQRangeControl
    {
        TQ_OBJECT
        TQ_PROPERTY( bool tracking READ tracking WRITE setTracking )
        TQ_PROPERTY( bool wrapping READ wrapping WRITE setWrapping )
        TQ_PROPERTY( int notchSize READ notchSize )
        TQ_PROPERTY( double notchTarget READ notchTarget WRITE setNotchTarget )
        TQ_PROPERTY( bool notchesVisible READ notchesVisible WRITE setNotchesVisible )
        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 )

    public:
        TQDial( TQWidget* parent=0, const char* name=0, WFlags f = 0 );
        TQDial( int minValue, int maxValue, int pageStep, int value,
    	   TQWidget* parent=0, const char* name=0 );
        ~TQDial();

        bool tracking() const;

        bool wrapping() const;

        int notchSize() const;

        virtual void setNotchTarget( double );
        double notchTarget() const;

        bool notchesVisible() const;

        TQSize sizeHint() const;
        TQSize minimumSizeHint() const;

        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;

    public slots:
        virtual void setValue( int );
        void addLine();
        void subtractLine();
        void addPage();
        void subtractPage();
        virtual void setNotchesVisible( bool b );
        virtual void setWrapping( bool on );
        virtual void setTracking( bool enable );

    signals:
        void valueChanged( int value );
        void dialPressed();
        void dialMoved( int value );
        void dialReleased();

    protected:
        void resizeEvent( TQResizeEvent * );
        void paintEvent( TQPaintEvent * );

        void keyPressEvent( TQKeyEvent * );
        void mousePressEvent( TQMouseEvent * );
        void mouseReleaseEvent( TQMouseEvent * );
        void mouseMoveEvent( TQMouseEvent * );
    #ifndef TQT_NO_WHEELEVENT
        void wheelEvent( TQWheelEvent * );
    #endif
        void focusInEvent( TQFocusEvent * );
        void focusOutEvent( TQFocusEvent * );

        void valueChange();
        void rangeChange();

        virtual void repaintScreen( const TQRect *cr = 0 );

    private:
        TQDialPrivate * d;

        int valueFromPoint( const TQPoint & ) const;
        double angle( const TQPoint &, const TQPoint & ) const;
        TQPointArray calcArrow( double &a ) const;
        TQRect calcDial() const;
        int calcBigLineSize() const;
        void calcLines();

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

    };

    #endif  // TQT_NO_DIAL

    #endif