qt做一个带有日历和钟表的界面

#include "mainwindow.h" #include "ui_mainwindow.h" MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); ui->tab->installEventFilter(this); //安装事件过滤器到窗口 ui->label->setText("current time zone:"+ui->comboBox->currentText()); QTime current_time = QTime::currentTime(); // 构造定时器，设置超时为 1 秒 QTimer *timer = new QTimer(this); connect(timer, SIGNAL(timeout()), this, SLOT(update())); timer->start(1000); ui->spinBox->setValue(current_time.hour()); ui->spinBox_2->setValue(current_time.minute()); ui->spinBox_3->setValue(current_time.second()); if(ui->spinBox->value()<12) ui->radioButton->setChecked(true); else ui->radioButton_2->setChecked(true); if(ui->spinBox->value()>12) ui->spinBox->setValue(current_time.hour()-12); } MainWindow::~MainWindow() { //delete ui; } void MainWindow::on_pushButton_clicked() { apply(); } void MainWindow::on_pushButton_2_clicked() { this->close(); } void MainWindow::painter() { QPainter painter(ui->tab); // 时针、分针、秒针位置 - 多边形 static const QPoint hourHand[3] = { QPoint(7, 8), QPoint(-7, 8), QPoint(0, -30) }; static const QPoint minuteHand[3] = { QPoint(7, 8), QPoint(-7, 8), QPoint(0, -65) }; static const QPoint secondHand[3] = { QPoint(7, 8), QPoint(-7, 8), QPoint(0, -80) }; // 时针、分针、秒针颜色 QColor hourColor(176, 196, 222, 150); QColor minuteColor(255, 182, 193, 200); QColor secondColor(135, 206, 250, 150); int side = qMin(width(), height()); QTime time = QTime::currentTime(); painter.setRenderHint(QPainter::Antialiasing); // 平移坐标系原点至中心点 painter.translate(410, 130); // 缩放 painter.scale(side / 550.0, side / 550.0); // 绘制时针 painter.setPen(Qt::NoPen); painter.setBrush(hourColor); painter.save(); // 每圈360° = 12h 即：旋转角度 = 小时数 * 30° painter.rotate(30.0 * ((time.hour() + time.minute() / 60.0))); painter.drawConvexPolygon(hourHand, 3); painter.restore(); painter.setPen(hourColor); // 绘制小时线 （360度 / 12 = 30度） for (int i = 0; i < 12; ++i) { painter.drawLine(88, 0, 96, 0); painter.rotate(30.0); } // 绘制分针 painter.setPen(Qt::NoPen); painter.setBrush(minuteColor); painter.save(); // 每圈360° = 60m 即：旋转角度 = 分钟数 * 6° painter.rotate(6.0 * (time.minute() + time.second() / 60.0)); painter.drawConvexPolygon(minuteHand, 3); painter.restore(); painter.setPen(minuteColor); // 绘制分钟线 （360度 / 60 = 6度） for (int j = 0; j < 60; ++j) { if ((j % 5) != 0) painter.drawLine(92, 0, 96, 0); painter.rotate(6.0); } // 绘制秒针 painter.setPen(Qt::NoPen); painter.setBrush(secondColor); painter.save(); // 每圈360° = 60s 即：旋转角度 = 秒数 * 6° painter.rotate(6.0 * time.second()); painter.drawConvexPolygon(secondHand, 3); painter.restore(); } bool MainWindow::eventFilter(QObject *watched, QEvent *event){ if(watched == ui->tab && event->type() == QEvent::Paint){ painter(); return true; } else return false; return MainWindow::eventFilter(watched,event); //将事件传递给父类 } void MainWindow::on_spinBox_valueChanged(int arg1) { if(ui->spinBox->value()==-1) ui->spinBox->setValue(11); if(ui->spinBox->value()==24) ui->spinBox->setValue(0); } void MainWindow::on_spinBox_2_valueChanged(int arg1) { if(ui->spinBox_2->value()==60){ ui->spinBox->setValue(ui->spinBox->value()+1); ui->spinBox_2->setValue(0); } if(ui->spinBox_2->value()==-1){ ui->spinBox->setValue(ui->spinBox->value()-1); ui->spinBox_2->setValue(59); } } void MainWindow::on_spinBox_3_valueChanged(int arg1) { if(ui->spinBox_3->value()==60){ ui->spinBox_2->setValue(ui->spinBox_2->value()+1); ui->spinBox_3->setValue(0); } if(ui->spinBox_3->value()==-1){ ui->spinBox_2->setValue(ui->spinBox_2->value()-1); ui->spinBox_3->setValue(59); } } void MainWindow::apply() { QString str1,str2,str3,str4,str,tempStr; str3 = ui->comboBox->currentText(); str1 = "*************************************"; str2 = "\nYear = "+QString::number(ui->calendarWidget->yearShown())+"\nMonth = "+QString::number(ui->calendarWidget->monthShown()) +"\nHour = "+ui->spinBox->value()+"\nMinute = "+ui->spinBox_2->value()+"\nSecond = "+ui->spinBox_3->value() +"\nDay = "+ui->calendarWidget->selectedDate().toString("dd")+"\nTimezone = " + ui->comboBox->currentText() + "\nOffset from GMT = " + QString::number(timeZone(str3)) + " miniters\nAuto daylight = "; if(judgeDayLight()) str4 = "True\n"; else str4 = "False\n"; str = str1 + str2 + str4 + str1; QMessageBox::information(this, QString::fromUtf8("Date and Time"),"Time set to : \n"+str,QMessageBox::Yes); } int MainWindow::timeZone(QString str) { int s,m,n,l; if(str[7] == '0') m = 0; else if(str[7] == '1') m = 1; else if(str[7] == '2') m = 2; else if(str[7] == '3') m = 3; else if(str[7] == '4') m = 4; else if(str[7] == '5') m = 5; else if(str[7] == '6') m = 6; else if(str[7] == '7') m = 7; else if(str[7] == '8') m = 8; else if(str[7] == '9') m = 9; if(str[9] == '0') n = 0; else n = 3; if(str[5] == '+') { s = 1; if(str[6] == '0') { l = m*60 + n*10; s = s * l; } else { l = m*60 + n*10 + 600; s = s * l; } } else{ s = -1; if(str[6] == '0') { l = m*60 + n*10; s = s * l; } else { l = m*60 + n*10 + 600; s = s * l; } } return s; } bool MainWindow::judgeDayLight() { QTime currentTime = QTime::currentTime(); int n = currentTime.hour()*60 + currentTime.minute() - 480; n = timeZone(ui->comboBox->currentText()) - n; if(n > -360 && n <= 360) return true; else return false; } void MainWindow::on_pushButton_3_clicked() { apply(); this->close(); } void MainWindow::on_comboBox_currentTextChanged(const QString &arg1) { ui->label->setText("current time zone:"+ui->comboBox->currentText()); }