QeLed.hpp

#ifndef QELED_H
#define QELED_H
 
#include <QWidget>
#include <QtSvg/QtSvg>
#include <QtSvg/QSvgRenderer>
#include <QColor>
#include <QXmlStreamReader>

class QeLed : public QWidget
{
    Q_OBJECT

    Q_PROPERTY(QColor colorOn READ colorOn WRITE setColorOn NOTIFY colorOnChanged)
 
    
    Q_PROPERTY(QColor colorOff READ colorOff WRITE setColorOff NOTIFY colorOffChanged)

    Q_PROPERTY(bool lit READ isLit WRITE setLit NOTIFY toggled)

    Q_PROPERTY(bool negate READ isNegated WRITE setNegate NOTIFY negated)
 
public:
    explicit QeLed(QWidget *parent = nullptr);
    QColor colorOn(){ return this->m_colorOn;}
    QColor colorOff(){ return this->m_colorOff;}
    bool isLit(){ return this->m_lit;}
    bool isNegated(){ return this->m_negate;}
 
public slots:
    void setColorOn(QColor newColorOn){
        this->m_colorOn = newColorOn;
        this->updateColor();
        emit colorOnChanged(newColorOn);
    }
    void setColorOff(QColor newColorOff){
        this->m_colorOff = newColorOff;
        this->updateColor();
        emit colorOffChanged(newColorOff);
    }
    void setLit(bool newValue){
        this->m_lit = newValue;
        this->updateColor();
        emit toggled(newValue);
    }
    void setNegate(bool newValue){
        this->m_negate = newValue;
        this->updateColor();
        emit negated(newValue);
    }
 
signals:
    void colorOnChanged(QColor newColorOn);

    void colorOffChanged(QColor newColorOff);

    void toggled(bool newValue);

    void negated(bool newValue);
 
protected:
    void paintEvent(QPaintEvent *event) override;
    void resizeEvent(QResizeEvent *event) override;
 
private:
    bool m_lit = false;
    bool m_negate = false;
    QColor m_colorOn;
    QColor m_colorOff;
    QSvgRenderer m_svg;
    QSvgRenderer m_svg_on;
    QSvgRenderer m_svg_off;
    QString m_originalXml;
    QString m_modifiedXml;
    const QString c_ledImagePath = ":/led.svg";
 
    void updateColor();
    QColor calculateColor();
};
 
#endif // QELED_H