9月3日QT作业

 闹钟

.h

#ifndef NAOZHONG_H
#define NAOZHONG_H

#include <QWidget>
#include<QLCDNumber>
#include<QTime>
#include<QMouseEvent>
#include <QPushButton>
#include <QLineEdit>
#include <QTextEdit>
#include <QTextToSpeech>
#include <QPaintEvent>
#include <QPainter>

QT_BEGIN_NAMESPACE
namespace Ui { class naozhong; }
QT_END_NAMESPACE

class naozhong : public QWidget
{
    Q_OBJECT

signals:
    void signal1();

public:
    naozhong(QWidget *parent = nullptr);
    ~naozhong();

    void timerEvent(QTimerEvent *e);       //重写定时器事件

public slots:
    void on_btn1();
    void on_btn2();
    void on_signal1();

    void paintEvent(QPaintEvent *event);  //重写设置背景图虚函数

private:
    Ui::naozhong *ui;

    QLCDNumber *colock;  //定义一个时钟指针

    //定义闪烁秒的状态
    int showFlag = 1;

    QPushButton *btn1;  //开始按钮
    QPushButton *btn2;  //停止按钮

    QLineEdit *edit1;   //定义一个可以定时的行编辑器
    QTextEdit *edit2;   //定义一个可以定时的文本编辑器

    int flag1 = 0;      //定义一个播报flag

    //定义一个播报者
    QTextToSpeech speech;

    QString timeText;  //存储时间

};
#endif // NAOZHONG_H

 .cpp

#include "naozhong.h"
#include "ui_naozhong.h"

naozhong::naozhong(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::naozhong)
{
    ui->setupUi(this);
    colock = new QLCDNumber(this);
    //美化时钟样子
    colock->setFixedSize(500,150);
    //调整透明度
     colock->setWindowOpacity(0);

     //启动定时器
     startTimer(1000);

     //定时文本
     edit1 = new QLineEdit(this); //定时的文本
     edit1->setPlaceholderText("请定时");  //设置提示文字
     edit1->resize(190,60); //设置大小
     //edit1->resize(2*(btn1->width())+20,60); //设置大小
     edit1->move(colock->width()+20, 0);  //移动位置
     edit1->setFont(QFont("", 28 , QFont::Bold));
     edit1->setWindowOpacity(0); //将透明度设置为0
     edit1->setStyleSheet("background:transparent"); //将透明度设置为0

     //启动按钮
     btn1 = new QPushButton("START", this);
     btn1->resize(85,45); //设置大小
     btn1->move(edit1->x(), edit1->height()+30); //移动位置
     btn1->setFlat(true);  // 设置按钮透明
     btn1->setFont(QFont("黑体", 20));

     //停止按钮
     btn2 = new QPushButton("STOP", this);
     btn2->resize(85,45); //设置大小
     btn2->move(btn1->x()+btn1->width()+20, btn1->y()); //移动位置
     btn2->setFlat(true);  // 设置按钮透明
     btn2->setFont(QFont("黑体", 20));


     //备注文本
     edit2 = new QTextEdit(this);
     edit2->setPlaceholderText("请输入备忘录");  //设置提示文字
     edit2->resize(colock->width()+20+edit1->width(),60); //设置大小
     edit2->move(0, colock->height()+20); //移动位置
     edit2->setFont(QFont("", 20 , QFont::Bold));
     edit2->setWindowOpacity(0);  //将透明度设置为0
     edit2->setStyleSheet("background:transparent"); //将透明度设置为0

     this->setFixedSize(colock->width()+30+edit1->width(), colock->height()+20+edit2->height());  //设置主控件的大小
     this->setWindowTitle("奇奇牌闹钟");
     //去掉边框
     //this->setWindowFlags(Qt::FramelessWindowHint);

     //设置两个按钮的槽函数
     connect(btn1, &QPushButton::clicked, this, &naozhong::on_btn1);
     connect(btn2, &QPushButton::clicked, this, &naozhong::on_btn2);

     //设置播报槽函数
     connect(this, &naozhong::signal1, this, &naozhong::on_signal1);
}

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

void naozhong::timerEvent(QTimerEvent *)
{
        //1、获取系统事件
        QTime sysTime = QTime::currentTime();

        //2、将系统事件转换为字符串
        timeText = sysTime.toString("hh:mm");

        if(showFlag)
        {
            timeText[2] = ':';

            showFlag = 0;
        }else {

            timeText[2] = ' ';
            showFlag = 1;
        }
        //将时间字符串展示到LCD中
        colock->display(timeText);
         if(edit1->text() == timeText)
         {
            emit signal1();  //发播报信号
         }
}

void naozhong::on_btn1()
{
    edit1->setReadOnly(true);  //将定时文本设置为不可编辑
    edit2->setReadOnly(true);  //将备注文本设置为不可编辑
}

void naozhong::on_btn2()
{
    flag1 = 1;
    edit1->clear();  //将定时文本清空
    edit2->clear();  //将备忘录文本清空
    edit1->setReadOnly(false);  //将定时文本设置为可编辑
    edit2->setReadOnly(false);  //将备注文本设置为可编辑
}

void naozhong::on_signal1()
{
    if(0 == flag1)
        speech.say(edit2->toPlainText());
}

void naozhong::paintEvent(QPaintEvent *)  //设置背景图
{
    QPainter *painter = new QPainter(this);

    QPixmap pic = QPixmap(":/new/prefix1/1111.png");

     painter->drawPixmap(0,0,this->width(),this->height(),pic);


}