otbStandardOneLineFilterWatcher.cxx

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/*=========================================================================

  Program:   ORFEO Toolbox
  Language:  C++
  Date:      $Date$
  Version:   $Revision$


  Copyright (c) Centre National d'Etudes Spatiales. All rights reserved.
  See OTBCopyright.txt for details.

  Some parts of this code are derived from ITK. See ITKCopyright.txt
  for details.


     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#include "otbStandardOneLineFilterWatcher.h"

namespace otb
{

StandardOneLineFilterWatcher
::StandardOneLineFilterWatcher(itk::ProcessObject* process,
                        const char *comment)
  : FilterWatcherBase(process, comment)
{
  m_StarsCount = 50;
  m_CurrentNbStars = -1;
}

StandardOneLineFilterWatcher
::StandardOneLineFilterWatcher(itk::ProcessObject* process,
                        const std::string& comment)
  : FilterWatcherBase(process, comment.c_str())
{
  m_StarsCount = 50;
}

StandardOneLineFilterWatcher
::StandardOneLineFilterWatcher(const StandardOneLineFilterWatcher& watch) : FilterWatcherBase(watch)
{
  // Initialize state
  m_StarsCount = watch.m_StarsCount;
}

void
StandardOneLineFilterWatcher
::operator =(const StandardOneLineFilterWatcher& watch)
{
  // Initialize state
  FilterWatcherBase::operator=(watch);
  m_StarsCount = watch.m_StarsCount;
}

void
StandardOneLineFilterWatcher
::ShowProgress()
{
  if (m_Process)
    {
    int progressPercent = static_cast<int>(m_Process->GetProgress() * 100);
    int nbStars = static_cast<int>(m_Process->GetProgress() * m_StarsCount);
    int nbBlanks = m_StarsCount - nbStars;

    if (nbBlanks < 0)
      {
      nbBlanks = 0;
      }

    if (nbStars > m_StarsCount)
      {
      nbStars = m_StarsCount;
      }

    if (progressPercent > 100)
      {
      progressPercent = 100;
      }

    if (nbStars > m_CurrentNbStars)
      {
      std::string stars(nbStars, '*');
      std::string blanks(nbBlanks, ' ');

      std::cout << "\r"
                << m_Comment
                << ": "
                << progressPercent << "% [" << stars << blanks << "]"
                << std::flush;
      }

    m_CurrentNbStars = nbStars;
    }
}

void
StandardOneLineFilterWatcher
::StartFilter()
{
  m_TimeProbe.Start();
}

void
StandardOneLineFilterWatcher
::EndFilter()
{
  m_TimeProbe.Stop();

  // Ensure we don't depend on std::cout configuration
  std::ostringstream elapsedTime;
  elapsedTime.precision(1);
  elapsedTime << m_TimeProbe.GetMeanTime();

  std::cout << " ("
            << elapsedTime.str()
            << " seconds)"
            << std::endl;
}

} // end namespace otb