GoTransferFunctionEditorWidget.h

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/*=========================================================================
 Modifications were made by the GoFigure Dev. Team.
 while at Megason Lab, Systems biology, Harvard Medical school, 2009-11

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

 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

 Redistributions of source code must retain the above copyright notice,
 this list of conditions and the following disclaimer.
 Redistributions in binary form must reproduce the above copyright notice,
 this list of conditions and the following disclaimer in the documentation
//  and/or other materials provided with the distribution.
 Neither the name of the  President and Fellows of Harvard College
 nor the names of its contributors may be used to endorse or promote
 products derived from this software without specific prior written
 permission.

 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
 OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
 OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 =========================================================================*/
#ifndef __GoTransferFunctionEditorWidget_h
#define __GoTransferFunctionEditorWidget_h

#include "QGoGUILibConfigure.h"

// Qt
#include <QWidget>
#include <QBrush>

//std
#include <vector>
#include <map>

// gofigure
class HoverPoints;
class GoTransferFunctionWidget;

// qt
class QPolygonF;
class QTextStream;
class QPushButton;
class QSlider;

//vtk
class vtkLookupTable;
class vtkImageAccumulate;
class vtkPiecewiseFunction;

class GoTransferFunctionEditorWidget : public QWidget
{
  Q_OBJECT
public:
  explicit GoTransferFunctionEditorWidget(  QString iChannel,
                                            const std::vector<double>& iColor,
                                            std::vector<int> iLUTParameters,
                                            double iMax,
                                            QWidget *parent = 0 );

  void AddPoints( const std::map<unsigned int, unsigned int >& iPoints);

  void AddLookupTable(vtkLookupTable* iLUT);

  void AddHistogram(vtkImageAccumulate* iHistogram);

  void AddColor(const std::vector<double>& iColor);

  void AddName(QString iChannel);

  void AddOpacityTransferFunction(vtkPiecewiseFunction* iOpacity);

  void SetMaximumValue( double iMax);

public slots:
  void UpdateLUT();
  void ChangeColor();

  void ResetLUT();

  void ApplyChanges();

  // opacity TF
  // might be buggy, to be checked
  void updateOpacityTF();

  void ShowHistogram(bool iShow);

  void AdjustWindowLevel(double iMin, double iMax);


  void updateSliders(int iValue);

signals:
  void updateVisualization();

  void UpdateImageStructure(QString,
                            std::map< unsigned int, unsigned int>,
                            QColor,
                            int,
                            int,
                            int);

private:
  void ConvertQPolygonFToSTDMap(
    const QPolygonF& iPoints, std::map< unsigned int, unsigned int>& iMap);

  void ConvertSTDMapToQPolygonF(
    const std::map< unsigned int, unsigned int>& iMap, QPolygonF& iPoints);

  QPushButton* m_ColorPushButton;

  GoTransferFunctionWidget *m_TFWidget;

  QSlider* m_GammaSlider;

  QSlider* m_MinSlider;

  QSlider* m_MaxSlider;

  QColor                    m_Color;

  QColor                    m_Color_original;

  QString                   m_Channel;

  vtkLookupTable           *m_LUT;

  vtkPiecewiseFunction     *m_OpacityTF;

  QVector<qreal>            m_Histogram;

  double m_Max;
};

#endif