qwt_counter.h

/* -*- 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
 *****************************************************************************/

// vim: expandtab

#ifndef QWT_COUNTER_H
#define QWT_COUNTER_H

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

class QWT_EXPORT QwtCounter : public QWidget, public QwtDoubleRange
{
    Q_OBJECT

    Q_PROPERTY( int numButtons READ numButtons WRITE setNumButtons )
    Q_PROPERTY( double basicstep READ step WRITE setStep )
    Q_PROPERTY( double minValue READ minVal WRITE setMinValue )
    Q_PROPERTY( double maxValue READ maxVal WRITE setMaxValue )
    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( double value READ value WRITE setValue )
    Q_PROPERTY( bool editable READ editable WRITE setEditable )

public:
    enum Button 
    {   
        Button1,    
        Button2,    
        Button3,    
        ButtonCnt   
    };

    explicit QwtCounter(QWidget *parent = NULL);
#if QT_VERSION < 0x040000
    explicit QwtCounter(QWidget *parent, const char *name);
#endif
    virtual ~QwtCounter();

    bool editable() const;
    void setEditable(bool);
 
    void setNumButtons(int n);
    int numButtons() const;
    
    void setIncSteps(QwtCounter::Button btn, int nSteps);
    int incSteps(QwtCounter::Button btn) const;

    virtual void setValue(double);
    virtual QSize sizeHint() const;

    virtual void polish();

    // a set of dummies to help the designer

    double step() const;
    void setStep(double s);
    double minVal() const;
    void setMinValue(double m);
    double maxVal() const;
    void setMaxValue(double m);
    void setStepButton1(int nSteps);
    int stepButton1() const;
    void setStepButton2(int nSteps);
    int stepButton2() const;
    void setStepButton3(int nSteps);
    int stepButton3() const;
    virtual double value() const;

signals:
    void buttonReleased (double value);  

    void valueChanged (double value);

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

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

private:
    void initCounter();
    void updateButtons();
    void showNum(double);
    virtual void valueChange();
    
    class PrivateData;
    PrivateData *d_data;
};

#endif

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