ImageLutWidget.h

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/*****************************************************************************
 * $CAMITK_LICENCE_BEGIN$
 *
 * CamiTK - Computer Assisted Medical Intervention ToolKit
 * (c) 2001-2018 Univ. Grenoble Alpes, CNRS, TIMC-IMAG UMR 5525 (GMCAO)
 *
 * Visit http://camitk.imag.fr for more information
 *
 * This file is part of CamiTK.
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 * only, as published by the Free Software Foundation.
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details.
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#ifndef ImageLutWidget_H
#define ImageLutWidget_H

// -- stl stuff
#include <string>
#include <fstream>
#include <vector>
#include <sstream>

// -- QT stuff
#include <QListWidget>
#include <QLineEdit>
#include <QCheckBox>
#include <QMap>
#include <QPushButton>
#include <QGraphicsView>
#include <QGraphicsSimpleTextItem>

// -- vtk stuff
#include <vtkWindowLevelLookupTable.h>
#include <vtkSmartPointer.h>

// -- Camitk stuff
#include "ui_ImageLutWidget.h"

// -- Core image component stuff classes
#include <ImageComponent.h>

class ImageLutWidget : public QWidget {
    Q_OBJECT

public:
    ImageLutWidget(QWidget* parent = nullptr);

    ~ImageLutWidget() override;

    void updateComponent(camitk::ImageComponent*);

private slots:

    void sliderLUTLevelChanged(int);

    void lineEditLUTLevelChanged();

    void sliderLUTWindowChanged(int);

    void lineEditLUTWindowChanged();

    void invertButtonClicked();

    void setMinColor();

    void setMaxColor();

    virtual void resetLUT();

    void applyLUT();

protected:

    void resizeEvent(QResizeEvent*) override;

    void showEvent(QShowEvent*) override;

private:

    void initLevelGUI(int min, int max, int value);

    void initWindowGUI(int min, int max, int value);

    void initSlider(QSlider* slider, int min, int max, int value);

    void blockAllSignals(bool);

    void draw();

    void fitView();

    template<class DATATYPE> void fillHistogramTable(DATATYPE* data, unsigned int dataDim, DATATYPE minVal, DATATYPE maxVal);

    void updateGradient();

    camitk::ImageComponent* myComponent;

    double lutMin;

    double lutMax;

    double* greyLevels;

    double highestGreyLevel;

    unsigned int nbHistoBins;

    bool invert;

    QGraphicsRectItem* sceneRectItem;

    Ui::ui_ImageLutWidget ui;

};

#endif