qDebugStream.h

/* ********************************************************************
    itom software
    URL: http://www.uni-stuttgart.de/ito
    Copyright (C) 2020, Institut für Technische Optik (ITO),
    Universität Stuttgart, Germany
 
    This file is part of itom.
 
    itom is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public Licence as published by
    the Free Software Foundation; either version 2 of the Licence, or (at
    your option) any later version.
 
    itom 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 Library
    General Public Licence for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with itom. If not, see <http://www.gnu.org/licenses/>.
*********************************************************************** */
 
//################
//# qdebugstream.h  #
//################
 
#ifndef Q_DEBUG_STREAM_H
#define Q_DEBUG_STREAM_H
 
#include "../../common/typeDefs.h"
#include <iostream>
#include <qobject.h>
 
namespace ito {
 
class QDebugStream : public QObject, public std::basic_streambuf<char>
{
    Q_OBJECT
 
public:
 
    QDebugStream(std::ostream &stream, ito::tStreamMessageType);
    ~QDebugStream();
 
signals:
    void flushStream(QString, ito::tStreamMessageType); 
protected:
 
    virtual std::basic_streambuf<char>::int_type overflow(int_type v);
 
    virtual std::streamsize xsputn(const char *p, std::streamsize n);
 
private:
    std::ostream &m_stream;                     
    std::streambuf *m_old_buf;                  
    std::string m_string;                       
    ito::tStreamMessageType msg_type;           
#if (QT_VERSION >= QT_VERSION_CHECK(5, 10, 0))
    // QRandomGenerator produces a value random value between 0 and 2**32-1
    uint32 m_randWaitThreshold;
#else
    // qRand() produces a value between 0 and RAND_MAX
    int m_randWaitThreshold;
#endif
};
 
}; // namespace ito
 
#endif