#include "qmytimedisplay.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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QMyTimeDisplay::QMyTimeDisplay(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,&QMyTimeDisplay::OnTimerd);
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}
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void QMyTimeDisplay::OnTimerd()
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{
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nCount++;
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repaint();
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}
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void QMyTimeDisplay::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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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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int thick=s/20;
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int gap=thick/2;
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QPen pen(QColor(0,0,0));
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//绘制秒钟的大圈
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pen.setWidth(thick);
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pen.setColor(QColor("#4D9CF8"));
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painter.setPen(pen);
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int nOffset = nCount*5 % 360;
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QRectF in_rectangle(wmargin+10+thick+gap, hmargin+10+thick+gap, s-20-thick*2-gap*2, s-20-thick*2-gap*2);
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int in_startAngle = (nOffset + 90) * 16;
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int in_spanAngle = (60)*16;
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painter.drawArc(in_rectangle,in_startAngle,in_spanAngle);
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in_startAngle = (nOffset + 90+120) * 16;
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in_spanAngle = (60)*16;
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painter.drawArc(in_rectangle,in_startAngle,in_spanAngle);
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in_startAngle = (nOffset + 90+240) * 16;
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in_spanAngle = (60)*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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QRectF sec_rectangle(wmargin+10, hmargin+10, s-20, s-20);
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int sec_startAngle = 90 * 16;
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int sec_spanAngle = ((position / range)*360)*16;
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QConicalGradient gradient;
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gradient.setCenter(sec_rectangle.center());
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gradient.setAngle(90);
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gradient.setColorAt(0, QColor(178, 255, 246));
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gradient.setColorAt(1, QColor(5, 44, 50));
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// int arcLengthApproximation = m_width + m_width / 3;
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QPen pen2(QBrush(gradient), thick);
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//pen.setCapStyle(Qt::RoundCap);
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// painter.setPen(pen2);
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painter.drawArc(sec_rectangle,sec_startAngle,sec_spanAngle);
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QRect rect2(wmargin + 15, hmargin +20, s-30,s-40);
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//绘制文本，绘制红色的文字
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painter.setPen(QPen(QColor(255,0,0)));
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//添加绘制的字体和字号
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QString s1;
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//s1=QString::number(int(position));
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int nMinute = int(position) / 60;
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int nSecond = int(position) % 60;
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if (nMinute > 0) {s1=QString::number(nMinute)+":"+tr("%1").arg(nSecond,2,10,QChar('0'));}
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else s1 = QString::number(nSecond);
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int l = s1.length();
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double fr = sqrt(l*l/2 + 4);
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int newfontsize = (s-10)/fr;
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if (newfontsize > fontsize) fontsize +=1;
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if (newfontsize < fontsize) fontsize = newfontsize;
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painter.setFont(QFont("Microsoft YaHei",fontsize));
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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 QMyTimeDisplay::SetRange(int n)
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{
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range=n;
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}
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void QMyTimeDisplay::SetPosition(float n)
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{
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position=n;
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repaint();
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}
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