自定义QT widget

可以点击圆环里面的小圆形，选中的为当前的位置

#include "samplestatuswidget.h"

#define MY_PI 3.14159265358979323846

const QColor SampleStatusWidget::scolor[STATE_NUM]={
 
 QColor(255,255,255),QColor(0,255,0),QColor(170,0,127),QColor(170,0,255)};

const QColor SampleStatusWidget::tcolor[TYPE_NUM]={
 
 QColor(Qt::white),QColor(Qt::green),QColor(Qt::red),QColor(Qt::magenta), QColor(Qt::yellow),QColor(Qt::gray)};

SampleStatusWidget::SampleStatusWidget(QWidget *parent) : QWidget(parent)

{
 
 

    for(int i=0;i<40;i++)

    {
 
 

        m_status[i].s=state(i%STATE_NUM);//STATE_IDLE;

        m_status[i].t=type(i%TYPE_NUM);//TYPE_NULL;

    }

    current=-1;

}

void SampleStatusWidget::paintEvent(QPaintEvent *e)

{
 
 

    R=width()/2-1;

    m_center.setX(width()/2);

    m_center.setY(height()/2);

    QPainter paint;

    paint.begin(this);

    paint.setRenderHint(QPainter::Antialiasing);//平滑曲线

        paint.setPen(QPen(Qt::black,2,Qt::SolidLine));

    paint.drawEllipse(m_center,R,R);

    paint.drawEllipse(m_center,R-50,R-50);

   // paint.drawEllipse(m_center,R-20,R-20);

    int mr=getR(R-25);

    MR=R-25;

    r1=mr;

    r0=mr-6;

    for(int i=0;i<40;i++)

    {
 
 

        QPoint cp;

        QRect re;

        cp.setX(m_center.x()+qCos(2*MY_PI/