itkSimpleFilterWatcher.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkSimpleFilterWatcher.h,v $
  Language:  C++
  Date:      $Date: 2004/11/10 19:22:12 $
  Version:   $Revision: 1.4 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm 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.

=========================================================================*/
#ifndef _itkSimpleFilterWatcher_h
#define _itkSimpleFilterWatcher_h

#include "itkCommand.h"
#include "itkProcessObject.h"
#include <time.h>


namespace itk
{

class ITKCommon_EXPORT SimpleFilterWatcher
{
public:
  SimpleFilterWatcher(itk::ProcessObject* o, const char *comment="");

  SimpleFilterWatcher(const SimpleFilterWatcher& );

  SimpleFilterWatcher();

  void operator=(const SimpleFilterWatcher& );

  virtual ~SimpleFilterWatcher();

  const char *GetNameOfClass ()
    {
      return (m_Process.GetPointer() ? m_Process->GetNameOfClass() : "None");
    }

  void QuietOn() {m_Quiet = true;};
  void QuietOff() {m_Quiet = false;};

  void TestAbortOn() {m_TestAbort = true;};
  void TestAbortOff() {m_TestAbort = false;};

  
protected:

  virtual void ShowProgress()
  {
    if (m_Process)
      {
      m_Steps++;
      if (!m_Quiet)
        {
        std::cout << " | " << m_Process->GetProgress() << std::flush;
        if ((m_Steps % 10) == 0)
          {
          std::cout << std::endl;
          }
        }
      if (m_TestAbort)
        {
        if (m_Process->GetProgress() > .03)
          {
          m_Process->AbortGenerateDataOn();
          }
        }
      }
  }

  virtual void ShowAbort()
  {
    std::cout << std::endl << "      ABORT" << std::endl << std::flush;
  }

  virtual void ShowIteration()
  {
    std::cout << " # " << std::flush;
    m_Iterations++;
  }

  virtual void StartFilter()
  {
    m_Steps = 0;
    m_Iterations = 0;
    m_Start = ::clock();
    std::cout << "-------- Start "
              << (m_Process.GetPointer() ? m_Process->GetNameOfClass() : "None")
              << " \"" << m_Comment << "\" ";
    if (m_Process)
      {
      std::cout << m_Process;
      }
    else
      {
      std::cout << "Null";
      }
    std::cout << (m_Quiet ? "Progress Quiet " : "Progress ")
              << std::flush;
  }

  virtual void EndFilter()
  {
    m_End = ::clock();
    std::cout << std::endl << "Filter took "
              << static_cast<double>(m_End - m_Start) / CLOCKS_PER_SEC
              << " seconds.";
    std::cout << std::endl << std::endl
              << "-------- End "
              << (m_Process.GetPointer() ? m_Process->GetNameOfClass() : "None")
              << " \"" << m_Comment << "\" ";
    if (m_Process)
      {
      std::cout << m_Process;
      }
    else
      {
      std::cout << "None";
      }
    std::cout << std::flush;
    if (m_Steps < 1)
      {
      itkExceptionMacro ("Filter does not have progress.");
      }
    }

private:
  clock_t m_Start;
  clock_t m_End;
  int m_Steps;
  int m_Iterations;
  bool m_Quiet;
  bool m_TestAbort;
  std::string m_Comment;
  itk::ProcessObject::Pointer m_Process;

  typedef SimpleMemberCommand<SimpleFilterWatcher> CommandType;
  CommandType::Pointer m_StartFilterCommand;
  CommandType::Pointer m_EndFilterCommand;
  CommandType::Pointer m_ProgressFilterCommand;
  CommandType::Pointer m_IterationFilterCommand;
  CommandType::Pointer m_AbortFilterCommand;

  unsigned long m_StartTag;
  unsigned long m_EndTag;
  unsigned long m_ProgressTag;
  unsigned long m_IterationTag;
  unsigned long m_AbortTag;
};

} // end namespace itk

#endif

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