tjfeedback.h

/***************************************************************************
                          tjfeedback.h  -  description
                             -------------------
    begin                : Fri Jun 6 2003
    copyright            : (C) 2000-2021 by Thies Jochimsen
    email                : thies@jochimsen.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 of the License, or     *
 *   (at your option) any later version.                                   *
 *                                                                         *
 ***************************************************************************/
 
 
#ifndef TJFEEDBACK_H
#define TJFEEDBACK_H
 
#include <tjutils/tjutils.h>
#include <tjutils/tjthread.h>
 
 
class ProgressDisplayDriver {
 
 public:
 
  virtual ~ProgressDisplayDriver() {}
 
  virtual void init(unsigned int nsteps, const char* txt) = 0;
 
  virtual void increase(const char* subj) = 0;
 
  virtual bool refresh() = 0;
 
};
 
 
 
class ProgressMeter {
 
 public:
 
  ProgressMeter(ProgressDisplayDriver& disp) : display(&disp) {}
 
  ProgressMeter& new_task(unsigned int total_steps, const char* txt = 0);
 
  bool increase_counter(const char* subj = 0);
 
  bool refresh_display();
 
 
 private:
 
  // disable copy construction and copying
  ProgressMeter(const ProgressMeter&) {}
  ProgressMeter& operator = (const ProgressMeter&) {return *this;}
 
  ProgressDisplayDriver* display;
  Mutex mutex;
 
 
};
 
 
 
#ifndef NO_CMDLINE
 
class ProgressDisplayConsole : public virtual ProgressDisplayDriver {
 
 public:
  ProgressDisplayConsole() : counter(0), nsteps_cache(0), done(false) {}
 
  // Implementing virtual functions of ProgressDisplayDriver
  void init(unsigned int nsteps, const char* txt);
  void increase(const char*);
  bool refresh() {return false;}
 
 private:
  unsigned int counter, nsteps_cache, old_perc;
  bool done;
};
 
#endif
 
#endif