qgsdoublevalidator.h

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/***************************************************************************
                         qgsdoublevalidator.h  -  description
                             -------------------
    begin                : June 2020
    copyright            : (C) 2020 by Sebastien Peillet
    email                : sebastien.peillet@oslandia.com
 
  adapted version of Qgslonglongvalidator + QgsFieldValidator
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   This program is free software; you can redistribute it and/or modify  *
 *   it under the terms of the GNU General Public License as published by  *
 *   the Free Software Foundation; either version 2 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSDOUBLEVALIDATOR_H
#define QGSDOUBLEVALIDATOR_H
 
#include <limits>
 
#include "qgis_gui.h"
#include "qgis_sip.h"
 
#include <QLocale>
#include <QRegularExpressionValidator>
 
class QRegularExpression;

class GUI_EXPORT QgsDoubleValidator : public QRegularExpressionValidator
{
    Q_OBJECT
 
  public:
    explicit QgsDoubleValidator( QObject *parent );

    QgsDoubleValidator( const QRegularExpression &expression, double bottom, double top, QObject *parent );

    QgsDoubleValidator( double bottom, double top, QObject *parent );

    QgsDoubleValidator( double bottom, double top, int decimal, QObject *parent );

    QgsDoubleValidator( int decimal, QObject *parent );

    void setMaxDecimals( int maxDecimals );
 
 
    QValidator::State validate( QString &input, int & ) const override SIP_SKIP;

    QValidator::State validate( QString &input ) const;

    static double toDouble( const QString &input, bool *ok ) SIP_SKIP;

    static double toDouble( const QString &input );

    void setBottom( double bottom ) { mMinimum = bottom; }

    void setTop( double top ) { mMaximum = top; }

    virtual void setRange( double bottom, double top )
    {
      mMinimum = bottom;
      mMaximum = top;
    }

    double bottom() const { return mMinimum; }

    double top() const { return mMaximum; }
 
  private:
    // Disables copy constructing
    Q_DISABLE_COPY( QgsDoubleValidator )
 
    
    double mMinimum;

    double mMaximum;

    static QRegularExpression createExpression( int decimals );
};
 
#endif // QGSDOUBLEVALIDATOR_H