day0920

#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 paintEvent(QPaintEvent *event) override;
    void mousePressEvent(QMouseEvent *event) override;
    void mouseMoveEvent(QMouseEvent *event) override;
private slots:
    void on_CloseBtn_clicked();
 
private:
    Ui::Widget *ui;
    //定义个起始点
    QPoint StartPoint;
 
    int t_id;
};
#endif // WIDGET_H

#include "widget.h"
#include "ui_widget.h"
 
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    setWindowFlag(Qt::FramelessWindowHint);
    this->startTimer(1000);
}
 
Widget::~Widget()
{
    delete ui;
}
 
void Widget::paintEvent(QPaintEvent *event)
{
    //实例化一个画家类
    QPainter p(this);
    p.setFont(QFont("楷体"));
    //设置背景颜色
    p.setBrush(QBrush(QColor("pink")));
 
    p.translate(this->width()/2,this->height()/2);
 
    p.drawEllipse(QPoint(0,0),200,200);
 
    p.setPen(QColor("green"));
    for(int i=0; i<60; i++)
    {
        p.drawLine(200,0,195,0);
        p.rotate(6);
    }
    QPen pen;
    pen.setWidth(3);
    p.setPen(pen);
    for(int i=1; i<=12; i++)
    {
        p.rotate(30);
        p.drawLine(200,0,190,0);
        p.drawText(0,-175,QString("%1").arg(i));
    }
    QTime sysDate = QTime::currentTime();
    QString time = sysDate.toString();
 
    int h,m,s;
    QStringList list_time =time.split(":");
    h = list_time[0].toUInt();
    m = list_time[1].toUInt();
    s = list_time[2].toUInt();
 
    t_id = this->startTimer(1000);
 
    p.setPen(QColor("black"));
    p.setPen(pen);
    p.rotate(s*6);
    p.drawLine(0,0,0,-170);
    p.rotate(-s*6);
 
    pen.setWidth(2);
    p.setPen(pen);
    p.rotate(m*6 + s*6/60);
    p.drawLine(0,0,0,-120);
    p.rotate(-m*6 - s*6/60);
 
    pen.setWidth(3);
    p.setPen(pen);
    p.rotate((h%12)*30 + m*6/60 + s*6/60/12);
    p.drawLine(0,0,0,-80);
    p.rotate(-(h%12)*30 - m*6/60 - s*6/60/12);
 
    update();
}
void Widget::mousePressEvent(QMouseEvent *event)
{
    StartPoint = event->globalPos() - this->frameGeometry().topLeft();
}
void Widget::mouseMoveEvent(QMouseEvent *event)
{
    this->move(event->globalPos() - StartPoint);
}
void Widget::on_CloseBtn_clicked()
{
    close();
}