#include "qmyroundprogress.h"
#include <QPen>
#include <QBrush>
#include <QPainter>
#include <QTimer>

QMyRoundProgress::QMyRoundProgress(QWidget *parent) : QWidget(parent)
{
    QTimer* timer = new QTimer(this);
        timer->start(50);
        connect(timer,&QTimer::timeout,this,&QMyRoundProgress::OnTimerd);
}


void QMyRoundProgress::OnTimerd()
{
    nCount++;
    update();
}

void QMyRoundProgress::paintEvent(QPaintEvent *event)
{
    //控件的绘制工具，通过该工具我们可以进行常用的绘制了
    QPainter painter(this);
     painter.setRenderHint(QPainter::Antialiasing);

        //取得画布大小和中心方形。
     int w = this->rect().width();
     int h = this->rect().height();
     int s;
     int wmargin=0;
     int hmargin=0;
     if (w>h) {
         s= h;
         wmargin=(w-s)/2;

     }else{
         s= w;
         hmargin=(h-s)/2;
     }
     //画边框
     QPen pen0(QColor("#4D9CF8"));
     painter.setPen(pen0);
     painter.drawRoundRect(this->rect(),5,5);

      int thick =  s/20;

     QPen pen1(QColor(80,80,80));

     //绘制弧线的背景
      pen1.setWidth(thick);
      pen1.setCapStyle(Qt::RoundCap);
      //      pen.setColor(QColor("#4D9CF8"));
      painter.setPen(pen1);

     QRectF in_rectangle(wmargin+10, hmargin+s/4, s-20, s-20);
     int in_startAngle = (0) * 16;
     int in_spanAngle = (180)*16;
     painter.drawArc(in_rectangle,in_startAngle,in_spanAngle);


//     in_startAngle = (nOffset + 90+270) * 16;
//     in_spanAngle = (45)*16;
//     painter.drawArc(in_rectangle,in_startAngle,in_spanAngle);

     int nOffset = nCount*5 % 180;

     position = nOffset *range /180;

     QPen pen2(QColor("#4D9CF8"));
     pen2.setWidth(thick);
     pen2.setCapStyle(Qt::RoundCap);

     QRectF sec_rectangle(wmargin+10, hmargin+s/4, s-20, s-20);
     int sec_startAngle = 180 * 16;
     int sec_spanAngle = -1*((position / range)*180)*16;

     QConicalGradient gradient;
     gradient.setCenter(sec_rectangle.center());
     gradient.setAngle(190);
     gradient.setColorAt(0, color2);
     gradient.setColorAt(0.5, color2);
     gradient.setColorAt(1, color1);


 //    int arcLengthApproximation = m_width + m_width / 3;
     QPen pen3(QBrush(gradient), thick);
     pen3.setCapStyle(Qt::RoundCap);
     painter.setPen(pen3);
     painter.drawArc(sec_rectangle,sec_startAngle,sec_spanAngle);



     //绘制文本，绘制白色的文字
     painter.setPen(QPen(QColor(255,255,255)));
     QString s1;
     s1=sTitle;
     //显示标题
     QRect rect2(wmargin + 20, hmargin +10, s-40,s/8);
     painter.setFont(QFont("Microsoft YaHei",s/12));
  //   painter.drawText(this->rect(),s1);
    painter.drawText(rect2,Qt::AlignCenter,s1);
     //显示前后刻度
    painter.setFont(QFont("Microsoft YaHei",s/18));
    s1="0";
 //   painter.drawText(this->rect(),s1);
    rect2.setRect(wmargin,hmargin+s*3/4,20,s/16);
   painter.drawText(rect2,Qt::AlignCenter,s1);

   s1=QString::number(range);
//   painter.drawText(this->rect(),s1);
   rect2.setRect(wmargin+s-30,hmargin+s*3/4,40,s/16);
  painter.drawText(rect2,Qt::AlignCenter,s1);

     //显示当前数量
  painter.setFont(QFont("Microsoft YaHei",s/8));
  s1=QString::number(position);
//   painter.drawText(this->rect(),s1);
  rect2.setRect(wmargin+10,hmargin+10-s/20,s-20,s-20);
 painter.drawText(rect2,Qt::AlignCenter,s1);
     //显示单位
 painter.setFont(QFont("Microsoft YaHei",s/16));
 s1=sUnit;
//   painter.drawText(this->rect(),s1);
 rect2.setRect(wmargin+10,hmargin+10+s/10,s-20,s-20);
painter.drawText(rect2,Qt::AlignCenter,s1);

    return;
    //   QRect rect2(wmargin + 20, hmargin +20, s-40,s-40);

     //添加绘制的字体和字号
     s1=QString::number(int(position));
     int l = s1.length();
     double fr = sqrt(l*l + 4);
     painter.setFont(QFont("Microsoft YaHei",(s-20)/fr));
  //   painter.drawText(this->rect(),s1);
    painter.drawText(rect2,Qt::AlignCenter,s1);

}

void QMyRoundProgress::SetRange(int n)
{
    range=n;
}
void QMyRoundProgress::SetPosition(float n)
{
    position=n;
    update();
}
void QMyRoundProgress::SetTitle(QString title)
{
    sTitle = title;
}
void QMyRoundProgress::SetUnit(QString unit)
{
    sUnit = unit;
}
void QMyRoundProgress::SetColor(QColor Start,QColor End)
{
    color1 = Start;
    color2 = End;
}