QTday4（实现定时闹钟）

alarm.pro：

QT       += core gui texttospeech

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++11

# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS

# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    main.cpp \
    widget.cpp

HEADERS += \
    widget.h

FORMS += \
    widget.ui

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

RESOURCES += \
    icon/icon.qrc

widget.h：

#ifndef WIDGET_H
#define WIDGET_H

#include 
#include           //图标类头文件
#include 
#include       //行编辑器
#include 
#include          //标签类
#include          //定时器类头文件
#include           //系统时间类头文件
#include   //播报者头文件
#include       //日期时间类
#include 
#include     //定时器事件类
#include 
#include 
#include 

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 *event)override;    //重写定时器事件处理函数

    void paintEvent(QPaintEvent *event) override;


private slots:
    void LCD_Show();

    void on_StartButton_clicked();

    void on_CloseButton_clicked();

private:
    Ui::Widget *ui;

    QLCDNumber *DateLcd;
    QLineEdit *DateEdit;
    QTextEdit *textEdit;
    QPushButton *CloseButton;
    QPushButton *StartButton;

    //定义LCD屏时间显示的定时器
    QTimer *lcd_time;

    //定义一个bool类型变量：实现：以秒闪烁
    bool ShowFlag = true;

    //定义文本输入框的播报者
    QTextToSpeech *Text_Speech;

    //定义闹钟定时器
    int clock_time;

    //定义重复播报定时器
    int Respeech_time;
};

#endif // WIDGET_H

widget.cpp：

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

Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);

    //设置固定尺寸
    this->setFixedSize(540,410);

    //更改窗口标题
    this->setWindowTitle("小徐的专属闹钟");

    //更改窗口图标
    this->setWindowIcon(QIcon(":/1.png"));

    //给LCD屏定时器实例化对象
    lcd_time = new QTimer(this);

    //将timeout信号与处理的槽函数连接
    connect(lcd_time,&QTimer::timeout,this,&Widget::LCD_Show);

    //启动LCD屏定时器
    lcd_time->start(1000);

    //设置文本框
    textEdit = new QTextEdit(this);   //无参构造
    textEdit->resize(500,250);
    textEdit->move(20,150);
    textEdit->setStyleSheet("font:30pt");
    textEdit->setAlignment(Qt::AlignCenter);

    //时间展示
    DateLcd = new QLCDNumber(this);
    DateLcd->resize(300,120);
    DateLcd->move(20,20);

    //设置时间输入框
    DateEdit = new QLineEdit(this);   //无参构造
    DateEdit->resize(170,60);
    DateEdit->move(350,20);
    DateEdit->setStyleSheet("font:15pt");
    DateEdit->setAlignment(Qt::AlignCenter);

    //设置开始按钮
    StartButton = new QPushButton(this);   //无参构造
    StartButton->resize(80,30);
    StartButton->move(350,90);
    StartButton->setText("启动");

    //设置取消按钮为不可用状态
    CloseButton = new QPushButton(this);   //无参构造
    CloseButton->resize(80,30);
    CloseButton->move(440,90);
    CloseButton->setText("停止");
    CloseButton->setEnabled(false);

    //实例化文本输入框的播报者
    Text_Speech = new QTextToSpeech(this);

    connect(StartButton, &QPushButton::clicked, this, &Widget::on_StartButton_clicked);
    connect(CloseButton, &QPushButton::clicked, this, &Widget::on_CloseButton_clicked);

}

//LCD屏显示时间的槽函数
void Widget::LCD_Show()
{
    //获取当前系统时间
    QTime sys_time = QTime::currentTime();

    //将当前系统时间转化为时间字符串
    QString string_time = sys_time.toString("hh:mm");

    //实现：以秒闪烁
    if(ShowFlag)
    {
        string_time[2] = ':';
        ShowFlag = false;
    }
    else
    {
        string_time[2] = ' ';
        ShowFlag = true;
    }

    //展示到ui界面
    DateLcd->display(string_time);
}

//启动按钮对应的槽函数
void Widget::on_StartButton_clicked()
{
    //设置启动按钮为不可用状态
    StartButton->setEnabled(false);

    //设置取消按钮为可用状态
    CloseButton->setEnabled(true);

    //设置文本输入框为不可用状态
    textEdit->setEnabled(false);

    //设置时间输入框为不可用状态
    DateEdit->setEnabled(false);

    //启动闹钟定时器
    clock_time = this->startTimer(1000);
}

//取消按钮对应的槽函数
void Widget::on_CloseButton_clicked()
{
    //设置启动按钮为可用状态
    StartButton->setEnabled(true);

    //设置取消按钮为不可用状态
    CloseButton->setEnabled(false);

    //设置文本输入框为可用状态
    textEdit->setEnabled(true);

    //设置时间输入框为可用状态
    DateEdit->setEnabled(true);

    //关闭闹钟定时器
    //    this->killTimer(clock_time);

    //关闭重复播报定时器
    this->killTimer(Respeech_time);

    //清空时间数据输入框
    DateEdit->clear();

    //清空文本数据输入框
    textEdit->clear();

    //停止语音播报
    Text_Speech->stop();
}

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

void Widget::timerEvent(QTimerEvent *event)
{
    if(event->timerId() == clock_time)
    {
        //获取当前系统时间
        QTime sys_time = QTime::currentTime();

        //将当前系统时间转化为时间字符串
        QString string_time = sys_time.toString("hh:mm");

        //与时间输入框中的数据对比
        if(string_time == DateEdit->text())
        {
            //关闭闹钟定时器
            this->killTimer(clock_time);

            //启动重复播报定时器
            Respeech_time = this->startTimer(5000);

            //语音播报起床文本内容
            Text_Speech->say(textEdit->toPlainText());
        }
    }
    if(event->timerId() == Respeech_time)
    {
        //每隔5秒语音播报起床文本内容
        Text_Speech->say(textEdit->toPlainText());
    }
}

void Widget::paintEvent(QPaintEvent * event)
{
    QPainter painter(this);
    painter.drawPixmap(rect(),QPixmap(":/3.jpg"),QRect());
}

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