QGoLUTDialog.cxx

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/*=========================================================================
 Authors: The GoFigure Dev. Team.
 at Megason Lab, Systems biology, Harvard Medical school, 2009-11

 Copyright (c) 2009-11, President and Fellows of Harvard College.
 All rights reserved.

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#include "QGoLUTDialog.h"
#include "QDebug"
#include "QColorDialog"

#include "vtkLookupTable.h"
#include "vtkScalarBarActor.h"
#include "vtkLookupTableManager.h"
#include "vtkTextProperty.h"
#include "vtkRenderer.h"
#include "vtkRendererCollection.h"
#include "vtkRenderWindow.h"

QGoLUTDialog::QGoLUTDialog(QWidget *iParent) :
  QDialog(iParent),
  LUT(0)
{
  setupUi(this);

  this->LUT = vtkLookupTableManager::GetBWLookupTable();
  this->Renderer = vtkSmartPointer< vtkRenderer >::New();

  vtkRenderWindow *renwin = this->QvtkWidget->GetRenderWindow();
  renwin->AddRenderer(this->Renderer);

  this->LUTActor = vtkSmartPointer< vtkScalarBarActor >::New();
  this->LUTActor->SetLookupTable(this->LUT);
  this->LUTActor->SetOrientationToHorizontal();
  this->LUTActor->SetWidth(0.8);
  this->LUTActor->SetHeight(0.9);
  this->LUTActor->SetPosition(0.1, 0.1);
  this->LUTActor->SetTitle("LUT");

  this->Renderer->AddActor2D(this->LUTActor);

  renwin->Render();
}

QGoLUTDialog::~QGoLUTDialog()
{
  // Is deleted outside
  //this->LUT->Delete();
  delete this->QvtkWidget;
}

vtkLookupTable * QGoLUTDialog::GetLookupTable()
{
  return this->LUT;
}

vtkLookupTable * QGoLUTDialog::GetLookupTable(QWidget *iiParent,
                                              const QString & iTitle,
                                              const int & iIdx)
{
  QGoLUTDialog dlg(iiParent);

  if ( !iTitle.isEmpty() )
    {
    dlg.setWindowTitle(iTitle);
    }
  dlg.ChangeLookupTable(iIdx);
  if ( dlg.exec() == QDialog::Accepted )
    {
    return dlg.GetLookupTable();
    }
  else
    {
    dlg.GetLookupTable()->Delete();
    return NULL;
    }
}

void QGoLUTDialog::setupUi(QDialog *LUTDialog)
{
  if ( LUTDialog->objectName().isEmpty() )
    {
    LUTDialog->setObjectName( QString::fromUtf8("LUTDialog") );
    }

  LUTDialog->resize(321, 183);
  LUTDialog->setMinimumSize(200, 150);
  LUTDialog->setModal(true);

  this->VerticalLayout = new QVBoxLayout(LUTDialog);
  this->VerticalLayout->setObjectName( QString::fromUtf8("VerticalLayout") );
  this->VerticalLayout->setContentsMargins(10, 10, 10, 10);
  this->VerticalLayout->setSpacing(20);

  this->HorizontalLayout = new QHBoxLayout;
  this->HorizontalLayout->setObjectName( QString::fromUtf8("HorizontalLayout") );
  this->HorizontalLayout->setContentsMargins(0, 0, 0, 0);

  this->Label = new QLabel;
  this->Label->setObjectName( QString::fromUtf8("Label") );
  this->Label->setText( tr("Lookup Table") );

  this->HorizontalLayout->addWidget(Label);

  this->LUTComboBox = new QComboBox;
  this->LUTComboBox->setObjectName( QString::fromUtf8("LUTComboBox") );
  this->LUTComboBox->setLayoutDirection(Qt::RightToLeft);
  this->LUTComboBox->setAutoFillBackground(false);
  this->LUTComboBox->setEditable(false);
  this->LUTComboBox->setFrame(true);

  std::vector< std::string > lut_names =
    vtkLookupTableManager::GetAvailableLookupTables();

  size_t k = 0;
  for (; k < lut_names.size(); k++ )
    {
    this->LUTComboBox->insertItem( static_cast< int >( k ), QString::fromStdString(lut_names[k]) );
    }
  this->LUTComboBox->insertItem( static_cast< int >( k ), tr("HSV Based") );

  this->HorizontalLayout->addWidget(this->LUTComboBox);

  this->VerticalLayout->addLayout(this->HorizontalLayout);

  this->QvtkWidget = new QVTKWidget;
  this->QvtkWidget->setObjectName( QString::fromUtf8("qvtkWidget") );
  this->QvtkWidget->setGeometry( QRect(10, 50, 301, 100) );

  this->VerticalLayout->addWidget(this->QvtkWidget);

  this->HorizontalLayout_2 = new QHBoxLayout;
  this->HorizontalLayout_2->setObjectName( QString::fromUtf8("horizontalLayout_2") );
  this->HorizontalLayout_2->setContentsMargins(0, 0, 0, 0);

  this->HorizontalSpacer = new QSpacerItem(166, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
  this->HorizontalLayout_2->addItem(HorizontalSpacer);

  this->ButtonBox = new QDialogButtonBox;
  this->ButtonBox->setObjectName( QString::fromUtf8("buttonBox") );
  this->ButtonBox->setGeometry( QRect(60, 160, 252, 32) );
  this->ButtonBox->setOrientation(Qt::Horizontal);
  this->ButtonBox->setStandardButtons(QDialogButtonBox::Cancel
                                      | QDialogButtonBox::Ok);
  this->ButtonBox->setCenterButtons(false);
  this->HorizontalLayout_2->addWidget(ButtonBox);

  this->VerticalLayout->addLayout(this->HorizontalLayout_2);

  LUTDialog->setLayout(this->VerticalLayout);

  QObject::connect( this->ButtonBox, SIGNAL( accepted() ),
                    LUTDialog, SLOT( accept() ) );
  QObject::connect( this->ButtonBox, SIGNAL( rejected() ),
                    LUTDialog, SLOT( reject() ) );
  QObject::connect( this->LUTComboBox, SIGNAL( currentIndexChanged(int) ),
                    this, SLOT( ChangeLookupTable(int) ) );

  LUTComboBox->setCurrentIndex(0);

  QMetaObject::connectSlotsByName(LUTDialog);
}

void QGoLUTDialog::ChangeLookupTable(const int & idx)
{
  this->LUT->Delete();
  int N = this->LUTComboBox->count();

  if ( ( idx >= N ) || ( idx < 0 ) )
    {
    qWarning() << "QGoLUTDialog idx is out of range";
    return;
    }
  else
    {
    if ( idx == N - 1 )
      {
      QColor color = QColorDialog::getColor(Qt::green);

      double hsv[3];

      if ( color.isValid() )
        {
        hsv[0] = color.hueF();
        hsv[1] = color.saturationF();
        hsv[2] = color.valueF();
        }
      else
        {
        color = Qt::green;
        hsv[0] = color.hueF();
        hsv[1] = color.saturationF();
        hsv[2] = color.valueF();
        }

      this->LUT = vtkLookupTableManager::GetHSVBasedLookupTable(hsv);
      }
    else
      {
      this->LUT = vtkLookupTableManager::GetLookupTable(idx);
      }

    this->LUTActor->SetLookupTable(this->LUT);
    this->QvtkWidget->GetRenderWindow()->Render();
    }
}