qwt_counter.h

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/* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
 * Qwt Widget Library
 * Copyright (C) 1997   Josef Wilgen
 * Copyright (C) 2002   Uwe Rathmann
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the Qwt License, Version 1.0
 *****************************************************************************/

#ifndef QWT_COUNTER_H
#define QWT_COUNTER_H

#include "qwt_global.h"
#include <qwidget.h>

class QWT_EXPORT QwtCounter : public QWidget
{
    Q_OBJECT

    Q_PROPERTY( double value READ value WRITE setValue NOTIFY valueChanged USER true )
    Q_PROPERTY( double minimum READ minimum WRITE setMinimum )
    Q_PROPERTY( double maximum READ maximum WRITE setMaximum )
    Q_PROPERTY( double singleStep READ singleStep WRITE setSingleStep )

    Q_PROPERTY( int numButtons READ numButtons WRITE setNumButtons )
    Q_PROPERTY( int stepButton1 READ stepButton1 WRITE setStepButton1 )
    Q_PROPERTY( int stepButton2 READ stepButton2 WRITE setStepButton2 )
    Q_PROPERTY( int stepButton3 READ stepButton3 WRITE setStepButton3 )

    Q_PROPERTY( bool readOnly READ isReadOnly WRITE setReadOnly )
    Q_PROPERTY( bool wrapping READ wrapping WRITE setWrapping )

public:
    enum Button
    {
        Button1,

        Button2,

        Button3,

        ButtonCnt
    };

    explicit QwtCounter( QWidget *parent = NULL );
    virtual ~QwtCounter();

    void setValid( bool );
    bool isValid() const;

    void setWrapping( bool );
    bool wrapping() const;

    bool isReadOnly() const;
    void setReadOnly( bool );

    void setNumButtons( int n );
    int numButtons() const;

    void setIncSteps( QwtCounter::Button btn, int nSteps );
    int incSteps( QwtCounter::Button btn ) const;

    virtual QSize sizeHint() const;

    double singleStep() const;
    void setSingleStep( double s );

    void setRange( double min, double max );
    
    double minimum() const;
    void setMinimum( double min );

    double maximum() const;
    void setMaximum( double max );

    void setStepButton1( int nSteps );
    int stepButton1() const;

    void setStepButton2( int nSteps );
    int stepButton2() const;

    void setStepButton3( int nSteps );
    int stepButton3() const;

    double value() const;

public Q_SLOTS:
    void setValue( double );


Q_SIGNALS:
    void buttonReleased ( double value );

    void valueChanged ( double value );

protected:
    virtual bool event( QEvent * );
    virtual void wheelEvent( QWheelEvent * );
    virtual void keyPressEvent( QKeyEvent * );

private Q_SLOTS:
    void btnReleased();
    void btnClicked();
    void textChanged();

private:
    void incrementValue( int numSteps );
    void initCounter();
    void updateButtons();
    void showNumber( double );

    class PrivateData;
    PrivateData *d_data;
};

#endif