christmas_ecards/colortools.h

#ifndef COLORTOOLS_H
#define COLORTOOLS_H

#include <QColor>
#include <QDeclarativeItem>

class ColorTools : public QDeclarativeItem {

    Q_OBJECT

public:

    Q_INVOKABLE qreal hue(QColor color) {
        return color.hueF();
    }

    Q_INVOKABLE qreal saturation(QColor color) {
        return color.saturationF();
    }

    Q_INVOKABLE qreal lightness(QColor color) {
        return color.lightnessF();
    }

    Q_INVOKABLE qreal hue(qreal r, qreal g, qreal b) {
        qDebug() << "r: " << r << " g " << g << " b " << b;
        return QColor(r * 255, g * 255, b * 255).hueF();
    }

};

#endif // COLORTOOLS_H