2024-4-11 QT day4 作业

widget.h 

#ifndef WIDGET_H
#define WIDGET_H

#include <QWidget>
#include <QTimerEvent>
#include <QTime>
#include <QString>
#include <QtTextToSpeech>

QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT

public:
    Widget(QWidget *parent = nullptr);
    ~Widget();
    void timerEvent(QTimerEvent *e);

private slots:
    void on_Btn1_clicked();

private:
    Ui::Widget *ui;
    int id;
    QString alarm;
    QString speech_text;
};
#endif // WIDGET_H

widget.cpp

#include "widget.h"
#include "ui_widget.h"

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
    ,speech_text("起床啦")
{
    ui->setupUi(this);
    id = startTimer(1000);
    ui->lineEdit->setPlaceholderText("小时:分钟");

}

Widget::~Widget()
{
    delete ui;
}

void Widget::timerEvent(QTimerEvent *e)
{
    alarm = ui->lineEdit->text();
    QTime sys_time = QTime::currentTime();//获取当前时间
    QString s = sys_time.toString("hh:mm:ss");//将系统时间转换成字符串
    ui->sys_time_lab->setText(s);//将系统时间放入显示时间的按钮里
    //设置text_lab的闹钟铃声
    static int num = 0;
    if(s == alarm+":00")
    {
        ui->text_lab->setText(speech_text);
        while(num<5)
        {
            QTextToSpeech *speecher = new QTextToSpeech(this);
            speecher->say(speech_text);
            num++;
        }
        num = 0;
    }


}


void Widget::on_Btn1_clicked()
{
    if(ui->Btn1->text() == "启动" & ui->lineEdit->text()!="")
    {
        ui->Btn1->setText("关闭");
    }
    else
    {
        ui->Btn1->setText("启动");
        ui->lineEdit->setText("");
        ui->lineEdit->setPlaceholderText("小时:分钟");
    }
}

main.cpp

#include "widget.h"

#include <QApplication>

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    Widget w;
    w.show();
    return a.exec();
}

 ui界面

效果图：