#include "qmyroundprogress.h"
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#include <QPen>
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#include <QBrush>
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#include <QPainter>
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#include <QTimer>
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QMyRoundProgress::QMyRoundProgress(QWidget *parent) : QWidget(parent)
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{
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QTimer* timer = new QTimer(this);
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timer->start(50);
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connect(timer,&QTimer::timeout,this,&QMyRoundProgress::OnTimerd);
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}
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void QMyRoundProgress::OnTimerd()
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{
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nCount++;
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update();
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}
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void QMyRoundProgress::paintEvent(QPaintEvent *event)
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{
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//控件的绘制工具，通过该工具我们可以进行常用的绘制了
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QPainter painter(this);
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painter.setRenderHint(QPainter::Antialiasing);
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//取得画布大小和中心方形。
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int w = this->rect().width();
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int h = this->rect().height();
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int s;
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int wmargin=0;
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int hmargin=0;
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if (w>h) {
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s= h;
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wmargin=(w-s)/2;
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}else{
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s= w;
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hmargin=(h-s)/2;
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}
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//画边框
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QPen pen0(QColor("#4D9CF8"));
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painter.setPen(pen0);
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painter.drawRoundRect(this->rect(),5,5);
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int thick = s/20;
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QPen pen1(QColor(80,80,80));
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//绘制弧线的背景
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pen1.setWidth(thick);
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pen1.setCapStyle(Qt::RoundCap);
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// pen.setColor(QColor("#4D9CF8"));
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painter.setPen(pen1);
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QRectF in_rectangle(wmargin+10, hmargin+s/4, s-20, s-20);
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int in_startAngle = (0) * 16;
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int in_spanAngle = (180)*16;
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painter.drawArc(in_rectangle,in_startAngle,in_spanAngle);
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// in_startAngle = (nOffset + 90+270) * 16;
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// in_spanAngle = (45)*16;
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// painter.drawArc(in_rectangle,in_startAngle,in_spanAngle);
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int nOffset = nCount*5 % 180;
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position = nOffset *range /180;
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QPen pen2(QColor("#4D9CF8"));
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pen2.setWidth(thick);
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pen2.setCapStyle(Qt::RoundCap);
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QRectF sec_rectangle(wmargin+10, hmargin+s/4, s-20, s-20);
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int sec_startAngle = 180 * 16;
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int sec_spanAngle = -1*((position / range)*180)*16;
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QConicalGradient gradient;
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gradient.setCenter(sec_rectangle.center());
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gradient.setAngle(190);
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gradient.setColorAt(0, color2);
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gradient.setColorAt(0.5, color2);
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gradient.setColorAt(1, color1);
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// int arcLengthApproximation = m_width + m_width / 3;
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QPen pen3(QBrush(gradient), thick);
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pen3.setCapStyle(Qt::RoundCap);
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painter.setPen(pen3);
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painter.drawArc(sec_rectangle,sec_startAngle,sec_spanAngle);
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//绘制文本，绘制白色的文字
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painter.setPen(QPen(QColor(255,255,255)));
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QString s1;
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s1=sTitle;
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//显示标题
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QRect rect2(wmargin + 20, hmargin +10, s-40,s/8);
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painter.setFont(QFont("Microsoft YaHei",s/12));
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// painter.drawText(this->rect(),s1);
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painter.drawText(rect2,Qt::AlignCenter,s1);
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//显示前后刻度
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painter.setFont(QFont("Microsoft YaHei",s/18));
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s1="0";
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// painter.drawText(this->rect(),s1);
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rect2.setRect(wmargin,hmargin+s*3/4,20,s/16);
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painter.drawText(rect2,Qt::AlignCenter,s1);
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s1=QString::number(range);
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// painter.drawText(this->rect(),s1);
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rect2.setRect(wmargin+s-30,hmargin+s*3/4,40,s/16);
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painter.drawText(rect2,Qt::AlignCenter,s1);
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//显示当前数量
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painter.setFont(QFont("Microsoft YaHei",s/8));
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s1=QString::number(position);
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// painter.drawText(this->rect(),s1);
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rect2.setRect(wmargin+10,hmargin+10-s/20,s-20,s-20);
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painter.drawText(rect2,Qt::AlignCenter,s1);
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//显示单位
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painter.setFont(QFont("Microsoft YaHei",s/16));
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s1=sUnit;
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// painter.drawText(this->rect(),s1);
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rect2.setRect(wmargin+10,hmargin+10+s/10,s-20,s-20);
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painter.drawText(rect2,Qt::AlignCenter,s1);
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return;
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// QRect rect2(wmargin + 20, hmargin +20, s-40,s-40);
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//添加绘制的字体和字号
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s1=QString::number(int(position));
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int l = s1.length();
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double fr = sqrt(l*l + 4);
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painter.setFont(QFont("Microsoft YaHei",(s-20)/fr));
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// painter.drawText(this->rect(),s1);
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painter.drawText(rect2,Qt::AlignCenter,s1);
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}
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void QMyRoundProgress::SetRange(int n)
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{
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range=n;
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}
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void QMyRoundProgress::SetPosition(float n)
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{
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position=n;
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update();
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}
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void QMyRoundProgress::SetTitle(QString title)
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{
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sTitle = title;
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}
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void QMyRoundProgress::SetUnit(QString unit)
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{
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sUnit = unit;
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}
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void QMyRoundProgress::SetColor(QColor Start,QColor End)
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{
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color1 = Start;
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color2 = End;
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}
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