【嵌入式学习】Qtday03.26

一、思维导图

二、练习

头文件

#ifndef WIDGET_H
#define WIDGET_H
 
#include <QWidget>
#include <QTime>
#include <QTextToSpeech>
 
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_start_clicked();
 
private:
    Ui::Widget *ui;
    int id; //计时器id
    QString s; //闹钟时间
    int clock_id; //用于设置闹钟响的次数
    QTextToSpeech *speecher; //实例化一个播报者
 
 
};
#endif // WIDGET_H

源文件

#include "widget.h"
#include "ui_widget.h"
 
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
    , speecher(new QTextToSpeech)
{
    ui->setupUi(this);
    id=startTimer(1000);
}
 
Widget::~Widget()
{
    delete ui;
}
 
void Widget::timerEvent(QTimerEvent *e)
{
    QTime sys_time = QTime::currentTime();
    QString s1=sys_time.toString("hh:mm:ss");
    ui->localtm->setText(s1);
    ui->label->setAlignment(Qt::AlignCenter);
 
    if(s==s1)
    {
        clock_id=startTimer(10000);
        ui->label->setText("该起床了！！");
        speecher->say("该起床了!!");
 
    }
    if(e->timerId()==clock_id)
    {
        ui->label->setText("迟到了！！");
        speecher->say("迟到了!!!");
    }
 
}
 
 
 
void Widget::on_start_clicked()
{
    s = ui->lineEdit->text();
    ui->mytime->setText("闹钟时间: "+s);
}