happybirthdaysong.cpp Example File

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 #include "happybirthdaysong.h"
 #include <QTimer>

 HappyBirthdaySong::HappyBirthdaySong(QObject *parent)
 : QObject(parent), m_line(-1)
 {
     setName(QString());
     QTimer *timer = new QTimer(this);
     QObject::connect(timer, &QTimer::timeout, this, &HappyBirthdaySong::advance);
     timer->start(1000);
 }

 void HappyBirthdaySong::setTarget(const QQmlProperty &p)
 {
     m_target = p;
 }

 QString HappyBirthdaySong::name() const
 {
     return m_name;
 }

 void HappyBirthdaySong::setName(const QString &name)
 {
     m_name = name;

     m_lyrics.clear();
     m_lyrics << "Happy birthday to you,";
     m_lyrics << "Happy birthday to you,";
     m_lyrics << "Happy birthday dear " + m_name + ",";
     m_lyrics << "Happy birthday to you!";
     m_lyrics << "";
 }

 void HappyBirthdaySong::advance()
 {
     m_line = (m_line + 1) % m_lyrics.count();

     m_target.write(m_lyrics.at(m_line));
 }