randomnumbergenerator.h

Go to the documentation of this file.

/* ============================================================
 *
 * This file is a part of digiKam project
 * https://www.digikam.org
 *
 * Date        : 2010-11-03
 * Description : Generating random numbers
 *
 * Copyright (C) 2010-2011 by Marcel Wiesweg <marcel dot wiesweg at gmx dot de>
 *
 * 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, or (at your option)
 * any later version.
 *
 * 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.
 *
 * ============================================================ */
 
#ifndef DIGIKAM_RANDOM_NUMBER_GENERATOR_H
#define DIGIKAM_RANDOM_NUMBER_GENERATOR_H
 
// Qt includes
 
#include <QByteArray>
 
// Local includes
 
#include "digikam_export.h"
 
namespace Digikam
{
 
class DIGIKAM_EXPORT NonDeterministicRandomData : public QByteArray
{
public:
 
    explicit NonDeterministicRandomData(int size);
};
 
// --------------------------------------------------------------------
 
class DIGIKAM_EXPORT RandomNumberGenerator
{
public:
 
    explicit RandomNumberGenerator();
    ~RandomNumberGenerator();
 
    quint32 seedNonDeterministic();
 
    quint32 seedByTime();
 
    static quint32 nonDeterministicSeed();
 
    static quint32 timeSeed();
 
    void seed(quint32 seed);
 
    void reseed();
 
    quint32 currentSeed() const;
 
    int number(int min, int max);
 
    double number(double min, double max);
 
    bool yesOrNo(double p);
 
private:
 
    // Disable
    RandomNumberGenerator(const RandomNumberGenerator&)            = delete;
    RandomNumberGenerator& operator=(const RandomNumberGenerator&) = delete;
 
private:
 
    class Private;
    Private* const d;
};
 
} // namespace Digikam
 
#endif // DIGIKAM_RANDOM_NUMBER_GENERATOR_H