#include <cpExtensions/Config.h>

#ifdef cpExtensions_QT4

#include <cpExtensions/QT/ImageWidget.h>
#include <cpExtensions/Visualization/WindowLevelImageActor.h>
#include <cpPlugins/Interface/Workspace.h>

#include <QApplication>
#include <QWidget>
#include <QMainWindow>
#include <QHBoxLayout>

#include <vtkImageData.h>
#include <vtkPolyData.h>

/* TODO
   #include <vtkImageTracerWidget.h>
   #include <vtkSplineWidget.h>
   #include <vtkSmartPointer.h>
   #include <vtkGlyphSource2D.h>
   #include <vtkProp.h>
*/

#endif // cpExtensions_QT4

//----------------------------------------------------------------------------
int main( int argc, char* argv[] )
{
#ifdef cpExtensions_QT4

  // Manage inputs
  if( argc < 2 )
  {
    std::cerr << "Usage: " << argv[ 0 ] << " image_file(s)" << std::endl;
    return( 1 );

  } // fi

  // Create interface
  cpPlugins::Interface::Plugins::Pointer interface =
    cpPlugins::Interface::Plugins::New( );
  try
  {
    interface->LoadEnvironments( );
    interface->GuessPlugins( );
  }
  catch( std::exception& err )
  {
    std::cerr << "Error caught: " << err.what( ) << std::endl;
    return( 1 );

  } // yrt

  // Create workspace
  typedef cpPlugins::Interface::Workspace _TWorkspace;
  _TWorkspace::Pointer ws = _TWorkspace::New( );
  ws->PrintExecutionOn( );

  // Configure filters
  auto reader = ws->CreateFilter( "IO", "ImageReader", "reader" );
  auto widget = ws->CreateFilter( "Widgets", "SplineWidget", "spline" );
  ws->Connect( "reader", "spline", "Output", "Input" );
  auto params = reader->GetParameters( );
  for( int i = 1; i < argc; ++i )
    params->AddToOpenFileNameList( "FileNames",  argv[ i ] );

  // Execute reader
  try
  {
    reader->Update( );
  }
  catch( std::exception& err )
  {
    std::cerr << "Error caugth: " << err.what( ) << std::endl;
    return( 1 );

  } // yrt

  // Qt initialization
  QApplication app( argc, argv );
  QMainWindow wnd;
  wnd.setGeometry( 0, 0, 1024, 768 );
  cpExtensions::QT::ImageWidget view( &wnd );
  view.SetImage(
    reader->GetOutputData< vtkImageData >( "Output" ), 2, "image"
    );
  widget->AddInteractor( view.GetInteractor( ) );
  widget->Update( );

  // Start application and show data
  wnd.setCentralWidget( &view );
  wnd.show( );
  int r = app.exec( );
  widget->Modified( );
  widget->Update( );
  widget->GetOutputData< vtkPolyData >( "Output" )->Print( std::cout );
  return( r );
#else // cpExtensions_QT4
  return( 0 );
#endif // cpExtensions_QT4
}

// eof - $RCSfile$