qeled.hpp

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#ifndef QELED_H
#define QELED_H
 
#include <QWidget>
//#include <QtSvg>
#include <QtSvg/QSvgRenderer>
#include <QColor>
#include <QXmlStreamReader>
#include <QFile>
#include <QPainter>
#include <QDebug>
 
 
class QeLed : public QWidget
{
    Q_OBJECT
 
    Q_PROPERTY(QColor colorOn READ getColorOn WRITE setColorOn NOTIFY colorOnChanged)
    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   getColorOn()  { return this->m_colorOn;}
    bool     isLit()    { return this->m_lit;}
    bool     isNegated(){ return this->m_negate;}
 
public slots:
    void setColorOn(QColor arg){this->m_colorOn = arg; this->updateColor(); emit colorOnChanged(arg);}
    void setLit(bool arg){      this->m_lit = arg;     this->updateColor(); emit toggled(arg);}
    void setNegate(bool arg){   this->m_negate = arg;  this->updateColor(); emit negated(arg);}
 
signals:
    void colorOnChanged(QColor newColorOn);
    void toggled(bool newValue);
    void negated(bool newValue);
 
protected:
    void paintEvent(QPaintEvent *event) override;
 
private:
    bool m_lit = false;
    bool m_negate = false;
    QColor m_colorOn;
    QSvgRenderer m_svg;
    QString m_originalXml;
    QString m_modifiedXml;
    const QString c_ledImagePath = ":/led.svg";
 
    void updateColor();
    QColor calculateColor();
};
 
#endif // EULED_H