#ifndef TIMEREVENT_H
#define TIMEREVENT_H

#include <QWidget>
#include <QTimer>
#include <QTimerEvent>
#include <QLabel>

class TimerEvent : public QWidget
{
    Q_OBJECT
public:
    explicit TimerEvent(QWidget *parent = nullptr);
private slots:
    void startclick();
    void pauseclick();
    void restartclick();

    //用QTimer，定時(shí)器超時(shí)的槽函數(shù)
    void timerout1();
    void timerout2();
private:
    QLabel* lab1;
    QLabel* lab2;
    int id1;
    int id2;
    //QTimer
    QTimer *tm1;
    QTimer *tm2;
private:
    //QTimerEvent
    void timerEvent(QTimerEvent *event);
signals:

};

#endif // TIMEREVENT_H

#include "timerevent.h"
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QLabel>
#include <QPushButton>
#include <QDebug>

//  定時(shí)器事件
/*
 * 做定時(shí)器有兩種方式，一種QTimer類(lèi)，一種是QEvent的Timer事件 ，用到的子類(lèi)是QTimerEvent
 * 用兩種都去實(shí)現(xiàn)一下
 * 1.QTimerEvent
 * 需要重寫(xiě)void QObject::timerEvent(QTimerEvent *event)
 * 當(dāng)定時(shí)時(shí)間到的時(shí)候會(huì)自動(dòng)調(diào)用timerEvent
 * 用timerid可以獲取哪個(gè)定時(shí)器的id
 * startTimer()可以設(shè)置定時(shí)器時(shí)間間隔 ms
 * killTimer停止定時(shí)器
 *
 * 2.
 *QTimer 需要?jiǎng)?chuàng)建QTimer對(duì)象
 * 然后需要給定時(shí)器綁定 定時(shí)器超時(shí)的槽函數(shù)
 * 一般在按鈕里面有start，stop就是控制定時(shí)器的
 * 這樣通過(guò)按鈕點(diǎn)擊之后，調(diào)用里面Qtimer的start，因?yàn)橥饷娼壎硕〞r(shí)器超時(shí)槽函數(shù)，所以
 * 定時(shí)器到時(shí)間了就會(huì)調(diào)用超時(shí)槽函數(shù)
 * 對(duì)于 QTimerEvent不用重寫(xiě)超時(shí)函數(shù)并且去手動(dòng)綁定，他會(huì)自動(dòng)調(diào)用timerEvent，只需要重寫(xiě)這個(gè)就行
 * */
TimerEvent::TimerEvent(QWidget *parent) : QWidget(parent)
{
    //垂直布局
    QVBoxLayout *vblayout = new QVBoxLayout(this);
    vblayout->setSpacing(0);
    vblayout->setContentsMargins(0,0,0,0);

    //
    QLabel *ql = new QLabel(this);
    ql->setText("定時(shí)器事件");
    ql->setFixedHeight(50);
    ql->setAlignment(Qt::AlignCenter);
    ql->setFrameShape(QFrame::Box);
    ql->setStyleSheet("color:green;font:25px;background-color:rgb(0,233,233);border-radius:10px;"
                      );
    vblayout->addWidget(ql);

    //第一個(gè)標(biāo)簽
    lab1 = new QLabel(this);
    lab1->setFixedSize(95,95);
    lab1->setFrameShape(QFrame::Box);
    lab1->setStyleSheet("background-color:yellow");
    vblayout->addWidget(lab1);
    //第二個(gè)標(biāo)簽
    lab2 = new QLabel(this);
    lab2->setFixedSize(95,95);
    lab2->setFrameShape(QFrame::Box);
    lab2->setStyleSheet("background-color:purple");
    vblayout->addWidget(lab2);
    //三個(gè)按鈕
    QPushButton* start= new QPushButton(this);
    start->setText("開(kāi)始");
    QPushButton* pause= new QPushButton(this);
    pause->setText("暫停");
    QPushButton* restart= new QPushButton(this);
    restart->setText("復(fù)位");
    this->setStyleSheet(R"(
                        QPushButton{
                        font-size:20px;
                        })");
    //水平布局
    QHBoxLayout *hb = new QHBoxLayout(this);
    hb->setSpacing(0);
    hb->setContentsMargins(0,0,0,0);

    hb->addWidget(start);
    hb->addWidget(pause);
    hb->addWidget(restart);
    vblayout->addLayout(hb);

    //按鍵的信號(hào)槽
    connect(start,&QPushButton::clicked,this,&TimerEvent::startclick);
    connect(pause,&QPushButton::clicked,this,&TimerEvent::pauseclick);
    connect(restart,&QPushButton::clicked,this,&TimerEvent::restartclick);

    //Qtimer綁定的信號(hào)槽
    tm1 = new QTimer(this);
    tm2 = new QTimer(this);
    connect(tm1,&QTimer::timeout,this,&TimerEvent::timerout1);
    connect(tm2,&QTimer::timeout,this,&TimerEvent::timerout2);
}

void TimerEvent::startclick()
{
#ifdef USR_TIMER_EVENT
    qDebug()<<"use timerevent";
    id1=startTimer(10);
    id2=startTimer(20);
#else
    qDebug()<<"use Qtimer";
    tm1->start(10);
    tm2->start(20);
#endif
}

void TimerEvent::pauseclick()
{
#ifdef USR_TIMER_EVENT
    qDebug()<<"use timerevent";
    killTimer(id1);
    killTimer(id2);
#else
    qDebug()<<"use Qtimer";
    tm1->stop();
    tm2->stop();
#endif
}

void TimerEvent::restartclick()
{
    lab1->move(0,lab1->y());
    lab2->move(0,lab2->y());
}
//Qtimer
void TimerEvent::timerout1()
{
    lab1->move(lab1->x()+5,lab1->y());
    if(lab1->x()>=this->width()){
        lab1->move(0,lab1->y());
    }

}

void TimerEvent::timerout2()
{
    lab2->move(lab2->x()+5,lab2->y());
    if(lab2->x()>=this->width()){
        lab2->move(0,lab2->y());
    }
}
//timerevent
void TimerEvent::timerEvent(QTimerEvent *event)
{
    //當(dāng)定時(shí)器時(shí)間到了，看是哪個(gè)定時(shí)器
    if(event->timerId()==id1){
        lab1->move(lab1->x()+5,lab1->y());
        if(lab1->x()>=this->width()){
            lab1->move(0,lab1->y());
        }
    }
    if(event->timerId()==id2){
        lab2->move(lab2->x()+5,lab2->y());
        if(lab2->x()>=this->width()){
            lab2->move(0,lab2->y());
        }
    }
}

class MyObject : public QObject
  {
      Q_OBJECT

  public:
      MyObject(QObject *parent = nullptr);

  protected:
      void timerEvent(QTimerEvent *event) override;
  };

  MyObject::MyObject(QObject *parent)
      : QObject(parent)
  {
      startTimer(50);     // 50-millisecond timer
      startTimer(1000);   // 1-second timer
      startTimer(60000);  // 1-minute timer

      using namespace std::chrono;
      startTimer(milliseconds(50));
      startTimer(seconds(1));
      startTimer(minutes(1));

      // since C++14 we can use std::chrono::duration literals, e.g.:
      startTimer(100ms);
      startTimer(5s);
      startTimer(2min);
      startTimer(1h);
  }

  void MyObject::timerEvent(QTimerEvent *event)
  {
      qDebug() << "Timer ID:" << event->timerId();
  }