colormap min/max FLTK ImageViewer

ImageViewer.cxx

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: ImageViewer.cxx,v $
  Language:  C++
  Date:      $Date: 2008-05-10 19:56:09 $
  Version:   $Revision: 1.4 $

  Copyright (c) 2002 Insight 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.

=========================================================================*/
#include <iostream>

#include <itkImage.h>
#include <itkImageFileReader.h>

#include <metaCommand.h>

#include <FL/Fl.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_File_Chooser.H>
#include <GLSliceView.h>

#include "ImageViewerGUI.h"


Fl_Window *form;

int usage(void)
   {
   std::cout << "ImageViewer" << std::endl;
   std::cout << std::endl;
   std::cout << "ImageViewer <Filename>" << std::endl;
   std::cout << std::endl;

   return 1;
   }

int main(int argc, char **argv)
  {
  typedef itk::Image< float, 3 > ImageType;

  MetaCommand command;
  command.SetDescription( "FLTK based image viewer." );
  command.AddField( "image", "Image to view.", MetaCommand::STRING, MetaCommand::DATA_IN );

  command.SetOption( "iwMin", "p", false, "Colormap window minimum." );
  command.SetOptionLongTag( "iwMin", "iwmin" );
  command.AddOptionField( "iwMin", "iwMin", MetaCommand::FLOAT, true );

  command.SetOption( "iwMax", "q", false, "Colormap window maximum." );
  command.SetOptionLongTag( "iwMax", "iwmax" );
  command.AddOptionField( "iwMax", "iwMax", MetaCommand::FLOAT, true );

  if( !command.Parse( argc, argv ) )
    {
    std::cerr << "Problem parsing arguments." << std::endl;
    return 1;
    }

  if( !command.GetOptionWasSet( "image" ) )
    {
    std::cerr << "Please specify an image to view." << std::endl;
    return 1;
    }

  std::string fName = command.GetValueAsString( "image" );
  std::cout << "Loading File: " << fName << std::endl;
  typedef itk::ImageFileReader< ImageType > VolumeReaderType;
  VolumeReaderType::Pointer reader = VolumeReaderType::New();


  reader->SetFileName(fName);

  ImageType::Pointer imP;
  imP = reader->GetOutput();

  try
    {
    reader->Update();
    }
  catch( ... )
    {
    std::cout << "Problems reading file format" << std::endl;
    return 1;
    }
  std::cout << "...Done Loading File" << std::endl;

  char mainName[255];
  sprintf(mainName, "metaView: %s", fName.c_str());

  std::cout << std::endl;
  std::cout << "For directions on interacting with the window," << std::endl;
  std::cout << "   type 'h' within the window" << std::endl;
  
  form = make_window();

  tkMain->label(mainName);
  
  tkWin->SetInputImage(imP);
  tkWin->flipY(true);

  form->show();
  tkWin->show();
  tkWin->update();

  if( command.GetOptionWasSet( "iwMin" ) )
    {
    tkWin->iwMin( command.GetValueAsFloat( "iwMin", "iwMin" ) );
    }
  if( command.GetOptionWasSet( "iwMax" ) )
    {
    tkWin->iwMax( command.GetValueAsFloat( "iwMax", "iwMax" ) );
    }
  
  // force a first redraw
  Fl::check();
  tkWin->update();

  Fl::run();
  
  return 1;
  }