cloudcompare/qCC/ccCustomDoubleValidator.h

//##########################################################################
//#                                                                        #
//#                              CLOUDCOMPARE                              #
//#                                                                        #
//#  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; version 2 or later of the License.      #
//#                                                                        #
//#  This program is distributed in the hope that it will be useful,       #
//#  but WITHOUT ANY WARRANTY; without even the implied warranty of        #
//#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the          #
//#  GNU General Public License for more details.                          #
//#                                                                        #
//#          COPYRIGHT: EDF R&D / TELECOM ParisTech (ENST-TSI)             #
//#                                                                        #
//##########################################################################

#ifndef CC_CUSTOM_DOUBLE_VALIDATOR_HEADER
#define CC_CUSTOM_DOUBLE_VALIDATOR_HEADER

//Qt
#include <QValidator>
#include <QString>

//! Validator class (accepts only double numbers and replaces the comma by a point automatically)
class ccCustomDoubleValidator : public QValidator
{
	Q_OBJECT

public:

	//! Default constructor
	explicit ccCustomDoubleValidator(QObject * parent = 0) : QValidator(parent)
	{}

	//reimplemented from QValidator
	State validate(QString& input, int& pos) const
	{
		for (int i=0; i<input.size(); ++i)
		{
			QChar c = input[i];
			if (c == ',')
			{
				input[i] = '.';
				continue;
			}
			else if (c == '.' || c == '-' || c.isDigit())
			{
				continue;
			}
			else
			{
				return Invalid;
			}
		}
		return Acceptable;
	}
};

#endif // CC_CUSTOM_DOUBLE_VALIDATOR_HEADER