pc-system/blastJob/countdownwidget.h

#ifndef COUNTDOWNWIDGET_H
#define COUNTDOWNWIDGET_H

#include <QPainter>
#include <QTimer>
#include <QWidget>

class CountdownWidget : public QWidget {
    Q_OBJECT
   public:
    explicit CountdownWidget(QWidget *parent = nullptr);
    ~CountdownWidget();

   protected:
    void paintEvent(QPaintEvent *event) override;

   signals:
    void countdownFinished();

   private slots:
    void onTimerTimeout();

   private:
    QTimer *m_timer;
    int m_remainingSeconds;
};

#endif  // COUNTDOWNWIDGET_H