colorblind.h

/*
For general Scribus (>=1.3.2) copyright and licensing information please refer
to the COPYING file provided with the program. Following this notice may exist
a copyright and/or license notice that predates the release of Scribus 1.3.2
for which a new license (GPL+exception) is in place.
*/
#ifndef COLORBLIND_H
#define COLORBLIND_H

#include <QVariant>
#include <QColor>
#include <QObject>

#include "scribusapi.h"

class SCRIBUS_API VisionDefectColor : public QObject, public QColor
{
    Q_OBJECT
public:
    enum defectMode {
        normalVision = 0,
        protanopeVision = 1,
        deuteranopeVision = 2,
        tritanopeVision = 3,
        colorBlindnessVision = 4
    };

    VisionDefectColor(int r, int g, int b);
    VisionDefectColor(QColor c);

    VisionDefectColor();

    int deficiency;

    void convertDefect();

    QColor convertDefect(QColor c, int d);

    uint getRed();
    uint getGreen();
    uint getBlue();
    QColor getColor();

private:
    double rgb2lms[9];
    double lms2rgb[9];
    double gammaRGB[3];

    double a1, b1, c1;
    double a2, b2, c2;
    double inflection;

    double red, green, blue;

    QColor originalColor;

    void init();

    void setupDefect();

    double clamp(double x, double low, double high);

};

#endif