一、设置一个闹钟
.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.h
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QLabel> //标签
#include <QLineEdit> //行编辑器
#include <QPushButton>//按钮
#include <QTextEdit> //文本编辑器
#include <QTextToSpeech> //文本转语音的头文件
#include <QTimer> //定时器类的头文件
#include <QTime> //时间类
#include <QTimerEvent>//定时器时间处理类
#include <QDateTime> //日期时间类
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(QWidget *parent = nullptr);
~Widget();
//声明定时器事件处理函数
void timerEvent(QTimerEvent *e)override;
private slots:
void on_btn1_clicked();//启动按钮的槽函数
void on_btn2_clicked();//结束按钮的槽函数
private:
Ui::Widget *ui;
//定义一个播报员指针
QTextToSpeech *speechr;
//定义一个定时器指针
QTimer *time;
//定义一个定时器标识
int tid;
QPushButton *btn1;
QTextEdit *txt1;
QPushButton *btn2;
QLineEdit *edit1;
QLabel *lab1;
};
#endif // WIDGET_H.cpp
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
//实例化一个标签,设置为当前时间
lab1 = new QLabel(" ",this);
lab1 -> resize(400,150);//设置大小
lab1->move(60,50);
lab1->setStyleSheet("background-color:pink");//设置背景颜色
lab1->setScaledContents(true);//设置内容自适应
//实例化一个文本编辑器，设置为定的时间
edit1 = new QLineEdit(this);
edit1->setText("请输入>>>"); //设置编辑器中的文本内容
edit1->setPlaceholderText(""); //设置编辑器的占位文本
edit1->resize(250,75); //设置尺寸
edit1->move(lab1->x()+450,50);//移动位置
edit1->setStyleSheet("background-color:pink");
edit1->setEnabled(true); //设置不可用状态4
//实例化一个按钮，用作启动时间
btn1 = new QPushButton(this); //将当前界面设置成父组件
btn1->setText("启动");
btn1->resize(120,70); //设置按钮大小
btn1->setStyleSheet("background-color:pink");//设置背景颜色
btn1->move(edit1->x(),edit1->y()+85);
btn1->setEnabled(true); //设置是否可用
//实例化一个按钮，用作结束时间
btn2 = new QPushButton(this); //将当前界面设置成父组件
btn2->setText("停止");
btn2->resize(120,70); //设置按钮大小
btn2->setStyleSheet("background-color:pink");//设置背景颜色
btn2->move(btn1->x()+130,btn1->y());
btn2->setEnabled(true); //设置是否可用
//实例化一个文本编辑器，播报当定的时间与当前时间相同时的内容
txt1 = new QTextEdit(this);
txt1->setText("易烊千玺来叫你起床啦！！！");
txt1->resize(700,300);
txt1->setStyleSheet("background-color:pink");//设置背景颜色
txt1->move(60,lab1->y()+200);
//给播报员实例化一个空间
speechr = new QTextToSpeech(this);
//启动定时器
tid = this->startTimer(0); //每隔0秒调用timerEvent函数
connect(btn1,&QPushButton::clicked,this,&Widget::on_btn1_clicked); //启动按钮连接槽函数
connect(btn2,&QPushButton::clicked,this,&Widget::on_btn2_clicked); //启动按钮连接槽函数
}
Widget::~Widget()
{
delete ui;
}
//定时器闹钟启动按钮
void Widget::on_btn1_clicked()
{
//启动按钮禁用
this->btn1->setEnabled(false);
//将文本编辑器禁用
this->txt1->setEnabled(false);
//关闭按钮开启
this->btn2->setEnabled(true);
}
//定时器闹钟关闭按钮
void Widget::on_btn2_clicked()
{
//启动按钮开启
this->btn2->setEnabled(false);
//将文本编辑器禁用
this->txt1->setEnabled(true);
//关闭按钮关闭
this->btn1->setEnabled(true);
}
//定时器事件处理函数
void Widget::timerEvent(QTimerEvent *e)
{
QDateTime sys_time = QDateTime::currentDateTime(); //获取系统当前的日期时间
this->lab1->setText(sys_time.toString("yyyy-MM-dd-hh:mm:ss"));//将时间展示到lab1界面
QString t = sys_time.toString("hh:mm:ss");
this->lab1->setAlignment(Qt::AlignHCenter | Qt::AlignVCenter);//设置lab1中的内容居中显示
if(t == this->edit1->text() && this->btn1->isEnabled()== false)
{
speechr->say(this->txt1->toPlainText());
}
else if(this->btn1->isEnabled()== true)
{
speechr->stop();
}
}
二、使用绘制事件完成钟表的实现
QT += core gui
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
.h
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include<QPaintEvent>
#include<QTimer>
#include<QPainter>
#include<QPen>
#include<QBrush>
#include<QTime>
#include<QDebug>
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(int width, int height,QWidget *parent = nullptr);
~Widget();
void paintEvent(QPaintEvent *event);
private:
Ui::Widget *ui;
QTimer *timer;
int count = 0;
int hour;
int minute ;
int second ;
};
#endif // WIDGET_Hmain.cpp
#include "widget.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w(860, 640);
w.show();
return a.exec();
}
widget.cpp
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(int width, int height,QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
this->setFixedSize(width, height);
timer = new QTimer;
timer->start(1000);
connect(timer, &QTimer::timeout, [&](){
count++;
update();
});
//获取系统时间
QString t = QTime::currentTime().toString("h:m:s ap");
//qDebug()<<t<<" "<<t[0]<<" "<<t[2];
QStringList list1 = t.split(" ");
// for(int i=0; i<list1.size(); i++)
// {
// qDebug()<<list1.at(i);
// }
QStringList list2 = list1[0].split(":");
for(int i=0; i<list2.size(); i++)
{
qDebug()<<list2.at(i);
}
hour = list2[0].toUInt();
minute = list2[1].toUInt();
second = list2[2].toUInt();
qDebug()<<"hour:"<<hour<<" minute:"<<minute<<" second:"<<second;
}
Widget::~Widget()
{
delete ui;
}
void Widget::paintEvent(QPaintEvent *event)
{
//定义画家类绘制圆
QPainter p(this);
QPen pen(QColor("purple"));
pen.setWidth(3);
QBrush b("pink");
p.setPen(pen);
p.setBrush(b);
p.translate(this->width()/2,this->height()/2);
p.drawEllipse(QPoint(0,0), 200,200);
//使用画家类绘制刻度
pen.setColor(QColor("black"));
p.setPen(pen);
for(int i=0; i<60; i++)
{
p.rotate(6);
p.drawLine(QPoint(200,0), QPoint(195,0));
}
pen.setWidth(5);
p.setPen(pen);
for(int i=0; i<12; i++)
{
p.drawLine(QPoint(200,0), QPoint(190,0));
p.rotate(30);
p.drawText(QPoint(0, -170),QString("%1").arg(i+1));
}
//制作时针
pen.setWidth(10);
pen.setColor(QColor("red"));
p.setPen(pen);
p.rotate(hour*30+6*second/60/12+30*minute/60+6*count/60/12); //6*count/60/12+
p.drawLine(QPoint(0,-50), QPoint(0, 5));
//制作分针
QPainter p1(this);
p1.translate(this->width()/2,this->height()/2);
pen.setWidth(6);
pen.setColor(QColor("blue"));
p1.setPen(pen);
p1.rotate(6*count/60+minute*6+6*second/60);
p1.drawLine(QPoint(0,-80), QPoint(0, 8));
//制作秒针
QPainter p2(this);
p2.translate(this->width()/2,this->height()/2);
pen.setWidth(3);
pen.setColor(QColor("green"));
p2.setPen(pen);
p2.rotate(6*count+second*6);
p2.drawLine(QPoint(0,-120), QPoint(0, 12));
}
