| 提交 | 用户 | age | ||
| d3687b | 1 | #include "qmyroundprogress.h" |
| Q | 2 | #include <QPen> |
| 3 | #include <QBrush> | |
| 4 | #include <QPainter> | |
| 5 | #include <QTimer> | |
| 6 | ||
| 7 | QMyRoundProgress::QMyRoundProgress(QWidget *parent) : QWidget(parent) | |
| 8 | { | |
| 9 | QTimer* timer = new QTimer(this); | |
| 10 | timer->start(50); | |
| 11 | connect(timer,&QTimer::timeout,this,&QMyRoundProgress::OnTimerd); | |
| 12 | } | |
| 13 | ||
| 14 | ||
| 15 | void QMyRoundProgress::OnTimerd() | |
| 16 | { | |
| 17 | nCount++; | |
| 18 | update(); | |
| 19 | } | |
| 20 | ||
| 21 | void QMyRoundProgress::paintEvent(QPaintEvent *event) | |
| 22 | { | |
| 23 | //控件的绘制工具，通过该工具我们可以进行常用的绘制了 | |
| 24 | QPainter painter(this); | |
| 25 | painter.setRenderHint(QPainter::Antialiasing); | |
| 26 | ||
| 27 | //取得画布大小和中心方形。 | |
| 28 | int w = this->rect().width(); | |
| 29 | int h = this->rect().height(); | |
| 30 | int s; | |
| 31 | int wmargin=0; | |
| 32 | int hmargin=0; | |
| 33 | if (w>h) { | |
| 34 | s= h; | |
| 35 | wmargin=(w-s)/2; | |
| 36 | ||
| 37 | }else{ | |
| 38 | s= w; | |
| 39 | hmargin=(h-s)/2; | |
| 40 | } | |
| 41 | //画边框 | |
| 42 | QPen pen0(QColor("#4D9CF8")); | |
| 43 | painter.setPen(pen0); | |
| 44 | painter.drawRoundRect(this->rect(),5,5); | |
| 45 | ||
| 46 | int thick = s/20; | |
| 47 | ||
| 48 | QPen pen1(QColor(80,80,80)); | |
| 49 | ||
| 50 | //绘制弧线的背景 | |
| 51 | pen1.setWidth(thick); | |
| 52 | pen1.setCapStyle(Qt::RoundCap); | |
| 53 | // pen.setColor(QColor("#4D9CF8")); | |
| 54 | painter.setPen(pen1); | |
| 55 | ||
| 56 | QRectF in_rectangle(wmargin+10, hmargin+s/4, s-20, s-20); | |
| 57 | int in_startAngle = (0) * 16; | |
| 58 | int in_spanAngle = (180)*16; | |
| 59 | painter.drawArc(in_rectangle,in_startAngle,in_spanAngle); | |
| 60 | ||
| 61 | ||
| 62 | // in_startAngle = (nOffset + 90+270) * 16; | |
| 63 | // in_spanAngle = (45)*16; | |
| 64 | // painter.drawArc(in_rectangle,in_startAngle,in_spanAngle); | |
| 65 | ||
| 66 | int nOffset = nCount*5 % 180; | |
| 67 | ||
| 68 | position = nOffset *range /180; | |
| 69 | ||
| 70 | QPen pen2(QColor("#4D9CF8")); | |
| 71 | pen2.setWidth(thick); | |
| 72 | pen2.setCapStyle(Qt::RoundCap); | |
| 73 | ||
| 74 | QRectF sec_rectangle(wmargin+10, hmargin+s/4, s-20, s-20); | |
| 75 | int sec_startAngle = 180 * 16; | |
| 76 | int sec_spanAngle = -1*((position / range)*180)*16; | |
| 77 | ||
| 78 | QConicalGradient gradient; | |
| 79 | gradient.setCenter(sec_rectangle.center()); | |
| 80 | gradient.setAngle(190); | |
| 81 | gradient.setColorAt(0, color2); | |
| 82 | gradient.setColorAt(0.5, color2); | |
| 83 | gradient.setColorAt(1, color1); | |
| 84 | ||
| 85 | ||
| 86 | // int arcLengthApproximation = m_width + m_width / 3; | |
| 87 | QPen pen3(QBrush(gradient), thick); | |
| 88 | pen3.setCapStyle(Qt::RoundCap); | |
| 89 | painter.setPen(pen3); | |
| 90 | painter.drawArc(sec_rectangle,sec_startAngle,sec_spanAngle); | |
| 91 | ||
| 92 | ||
| 93 | ||
| 94 | //绘制文本，绘制白色的文字 | |
| 95 | painter.setPen(QPen(QColor(255,255,255))); | |
| 96 | QString s1; | |
| 97 | s1=sTitle; | |
| 98 | //显示标题 | |
| 99 | QRect rect2(wmargin + 20, hmargin +10, s-40,s/8); | |
| 100 | painter.setFont(QFont("Microsoft YaHei",s/12)); | |
| 101 | // painter.drawText(this->rect(),s1); | |
| 102 | painter.drawText(rect2,Qt::AlignCenter,s1); | |
| 103 | //显示前后刻度 | |
| 104 | painter.setFont(QFont("Microsoft YaHei",s/18)); | |
| 105 | s1="0"; | |
| 106 | // painter.drawText(this->rect(),s1); | |
| 107 | rect2.setRect(wmargin,hmargin+s*3/4,20,s/16); | |
| 108 | painter.drawText(rect2,Qt::AlignCenter,s1); | |
| 109 | ||
| 110 | s1=QString::number(range); | |
| 111 | // painter.drawText(this->rect(),s1); | |
| 112 | rect2.setRect(wmargin+s-30,hmargin+s*3/4,40,s/16); | |
| 113 | painter.drawText(rect2,Qt::AlignCenter,s1); | |
| 114 | ||
| 115 | //显示当前数量 | |
| 116 | painter.setFont(QFont("Microsoft YaHei",s/8)); | |
| 117 | s1=QString::number(position); | |
| 118 | // painter.drawText(this->rect(),s1); | |
| 119 | rect2.setRect(wmargin+10,hmargin+10-s/20,s-20,s-20); | |
| 120 | painter.drawText(rect2,Qt::AlignCenter,s1); | |
| 121 | //显示单位 | |
| 122 | painter.setFont(QFont("Microsoft YaHei",s/16)); | |
| 123 | s1=sUnit; | |
| 124 | // painter.drawText(this->rect(),s1); | |
| 125 | rect2.setRect(wmargin+10,hmargin+10+s/10,s-20,s-20); | |
| 126 | painter.drawText(rect2,Qt::AlignCenter,s1); | |
| 127 | ||
| 128 | return; | |
| 129 | // QRect rect2(wmargin + 20, hmargin +20, s-40,s-40); | |
| 130 | ||
| 131 | //添加绘制的字体和字号 | |
| 132 | s1=QString::number(int(position)); | |
| 133 | int l = s1.length(); | |
| 134 | double fr = sqrt(l*l + 4); | |
| 135 | painter.setFont(QFont("Microsoft YaHei",(s-20)/fr)); | |
| 136 | // painter.drawText(this->rect(),s1); | |
| 137 | painter.drawText(rect2,Qt::AlignCenter,s1); | |
| 138 | ||
| 139 | } | |
| 140 | ||
| 141 | void QMyRoundProgress::SetRange(int n) | |
| 142 | { | |
| 143 | range=n; | |
| 144 | } | |
| 145 | void QMyRoundProgress::SetPosition(float n) | |
| 146 | { | |
| 147 | position=n; | |
| 148 | update(); | |
| 149 | } | |
| 150 | void QMyRoundProgress::SetTitle(QString title) | |
| 151 | { | |
| 152 | sTitle = title; | |
| 153 | } | |
| 154 | void QMyRoundProgress::SetUnit(QString unit) | |
| 155 | { | |
| 156 | sUnit = unit; | |
| 157 | } | |
| 158 | void QMyRoundProgress::SetColor(QColor Start,QColor End) | |
| 159 | { | |
| 160 | color1 = Start; | |
| 161 | color2 = End; | |
| 162 | } | |
| 163 | ||
| 164 | ||
