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css - 如何通过css正确创建一个简单的圆形进度条

问题描述

下面的代码显示了一个带有百分比 (2%) 读数的进度条。我需要将其转换为圆形进度条。有人可以帮我吗？

这是代码

#progress_e {
  width: 100%;
  height: 20px;
  border: 1px solid rgba(0, 0, 0, 0.5);
}

#bar_e {
  width: 3%;
  height: 20px;
  background-color: green;
  -webkit-transition: width 700ms ease;
}
<div id="progress_e">
  <div id="bar_e">
    <div>3%</div>
  </div>
</div>

标签： css

解决方案

现场示例：

body,
html {
  font-size: 10px;
}

.progress-circle {
  font-size: 20px;
  margin: 20px;
  position: relative;
  /* so that children can be absolutely positioned */
  padding: 0;
  width: 5em;
  height: 5em;
  background-color: #F2E9E1;
  border-radius: 50%;
  line-height: 5em;
}

.progress-circle:after {
  border: none;
  position: absolute;
  top: 0.35em;
  left: 0.35em;
  text-align: center;
  display: block;
  border-radius: 50%;
  width: 4.3em;
  height: 4.3em;
  background-color: white;
  content: " ";
}


/* Text inside the control */

.progress-circle span {
  position: absolute;
  line-height: 5em;
  width: 5em;
  text-align: center;
  display: block;
  color: #53777A;
  z-index: 2;
}

.left-half-clipper {
  /* a round circle */
  border-radius: 50%;
  width: 5em;
  height: 5em;
  position: absolute;
  /* needed for clipping */
  clip: rect(0, 5em, 5em, 2.5em);
  /* clips the whole left half*/
}


/* when p>50, don't clip left half*/

.progress-circle.over50 .left-half-clipper {
  clip: rect(auto, auto, auto, auto);
}

.value-bar {
  /*This is an overlayed square, that is made round with the border radius,
   then it is cut to display only the left half, then rotated clockwise
   to escape the outer clipping path.*/
  position: absolute;
  /*needed for clipping*/
  clip: rect(0, 2.5em, 5em, 0);
  width: 5em;
  height: 5em;
  border-radius: 50%;
  border: 0.45em solid #53777A;
  /*The border is 0.35 but making it larger removes visual artifacts */
  /*background-color: #4D642D;*/
  /* for debug */
  box-sizing: border-box;
}


/* Progress bar filling the whole right half for values above 50% */

.progress-circle.over50 .first50-bar {
  /*Progress bar for the first 50%, filling the whole right half*/
  position: absolute;
  /*needed for clipping*/
  clip: rect(0, 5em, 5em, 2.5em);
  background-color: #53777A;
  border-radius: 50%;
  width: 5em;
  height: 5em;
}

.progress-circle:not(.over50) .first50-bar {
  display: none;
}


/* Progress bar rotation position */

.progress-circle.p0 .value-bar {
  display: none;
}

.progress-circle.p1 .value-bar {
  transform: rotate(4deg);
}

.progress-circle.p2 .value-bar {
  transform: rotate(7deg);
}

.progress-circle.p3 .value-bar {
  transform: rotate(11deg);
}

.progress-circle.p4 .value-bar {
  transform: rotate(14deg);
}

.progress-circle.p5 .value-bar {
  transform: rotate(18deg);
}

.progress-circle.p6 .value-bar {
  transform: rotate(22deg);
}

.progress-circle.p7 .value-bar {
  transform: rotate(25deg);
}

.progress-circle.p8 .value-bar {
  transform: rotate(29deg);
}

.progress-circle.p9 .value-bar {
  transform: rotate(32deg);
}

.progress-circle.p10 .value-bar {
  transform: rotate(36deg);
}

.progress-circle.p11 .value-bar {
  transform: rotate(40deg);
}

.progress-circle.p12 .value-bar {
  transform: rotate(43deg);
}

.progress-circle.p13 .value-bar {
  transform: rotate(47deg);
}

.progress-circle.p14 .value-bar {
  transform: rotate(50deg);
}

.progress-circle.p15 .value-bar {
  transform: rotate(54deg);
}

.progress-circle.p16 .value-bar {
  transform: rotate(58deg);
}

.progress-circle.p17 .value-bar {
  transform: rotate(61deg);
}

.progress-circle.p18 .value-bar {
  transform: rotate(65deg);
}

.progress-circle.p19 .value-bar {
  transform: rotate(68deg);
}

.progress-circle.p20 .value-bar {
  transform: rotate(72deg);
}

.progress-circle.p21 .value-bar {
  transform: rotate(76deg);
}

.progress-circle.p22 .value-bar {
  transform: rotate(79deg);
}

.progress-circle.p23 .value-bar {
  transform: rotate(83deg);
}

.progress-circle.p24 .value-bar {
  transform: rotate(86deg);
}

.progress-circle.p25 .value-bar {
  transform: rotate(90deg);
}

.progress-circle.p26 .value-bar {
  transform: rotate(94deg);
}

.progress-circle.p27 .value-bar {
  transform: rotate(97deg);
}

.progress-circle.p28 .value-bar {
  transform: rotate(101deg);
}

.progress-circle.p29 .value-bar {
  transform: rotate(104deg);
}

.progress-circle.p30 .value-bar {
  transform: rotate(108deg);
}

.progress-circle.p31 .value-bar {
  transform: rotate(112deg);
}

.progress-circle.p32 .value-bar {
  transform: rotate(115deg);
}

.progress-circle.p33 .value-bar {
  transform: rotate(119deg);
}

.progress-circle.p34 .value-bar {
  transform: rotate(122deg);
}

.progress-circle.p35 .value-bar {
  transform: rotate(126deg);
}

.progress-circle.p36 .value-bar {
  transform: rotate(130deg);
}

.progress-circle.p37 .value-bar {
  transform: rotate(133deg);
}

.progress-circle.p38 .value-bar {
  transform: rotate(137deg);
}

.progress-circle.p39 .value-bar {
  transform: rotate(140deg);
}

.progress-circle.p40 .value-bar {
  transform: rotate(144deg);
}

.progress-circle.p41 .value-bar {
  transform: rotate(148deg);
}

.progress-circle.p42 .value-bar {
  transform: rotate(151deg);
}

.progress-circle.p43 .value-bar {
  transform: rotate(155deg);
}

.progress-circle.p44 .value-bar {
  transform: rotate(158deg);
}

.progress-circle.p45 .value-bar {
  transform: rotate(162deg);
}

.progress-circle.p46 .value-bar {
  transform: rotate(166deg);
}

.progress-circle.p47 .value-bar {
  transform: rotate(169deg);
}

.progress-circle.p48 .value-bar {
  transform: rotate(173deg);
}

.progress-circle.p49 .value-bar {
  transform: rotate(176deg);
}

.progress-circle.p50 .value-bar {
  transform: rotate(180deg);
}

.progress-circle.p51 .value-bar {
  transform: rotate(184deg);
}

.progress-circle.p52 .value-bar {
  transform: rotate(187deg);
}

.progress-circle.p53 .value-bar {
  transform: rotate(191deg);
}

.progress-circle.p54 .value-bar {
  transform: rotate(194deg);
}

.progress-circle.p55 .value-bar {
  transform: rotate(198deg);
}

.progress-circle.p56 .value-bar {
  transform: rotate(202deg);
}

.progress-circle.p57 .value-bar {
  transform: rotate(205deg);
}

.progress-circle.p58 .value-bar {
  transform: rotate(209deg);
}

.progress-circle.p59 .value-bar {
  transform: rotate(212deg);
}

.progress-circle.p60 .value-bar {
  transform: rotate(216deg);
}

.progress-circle.p61 .value-bar {
  transform: rotate(220deg);
}

.progress-circle.p62 .value-bar {
  transform: rotate(223deg);
}

.progress-circle.p63 .value-bar {
  transform: rotate(227deg);
}

.progress-circle.p64 .value-bar {
  transform: rotate(230deg);
}

.progress-circle.p65 .value-bar {
  transform: rotate(234deg);
}

.progress-circle.p66 .value-bar {
  transform: rotate(238deg);
}

.progress-circle.p67 .value-bar {
  transform: rotate(241deg);
}

.progress-circle.p68 .value-bar {
  transform: rotate(245deg);
}

.progress-circle.p69 .value-bar {
  transform: rotate(248deg);
}

.progress-circle.p70 .value-bar {
  transform: rotate(252deg);
}

.progress-circle.p71 .value-bar {
  transform: rotate(256deg);
}

.progress-circle.p72 .value-bar {
  transform: rotate(259deg);
}

.progress-circle.p73 .value-bar {
  transform: rotate(263deg);
}

.progress-circle.p74 .value-bar {
  transform: rotate(266deg);
}

.progress-circle.p75 .value-bar {
  transform: rotate(270deg);
}

.progress-circle.p76 .value-bar {
  transform: rotate(274deg);
}

.progress-circle.p77 .value-bar {
  transform: rotate(277deg);
}

.progress-circle.p78 .value-bar {
  transform: rotate(281deg);
}

.progress-circle.p79 .value-bar {
  transform: rotate(284deg);
}

.progress-circle.p80 .value-bar {
  transform: rotate(288deg);
}

.progress-circle.p81 .value-bar {
  transform: rotate(292deg);
}

.progress-circle.p82 .value-bar {
  transform: rotate(295deg);
}

.progress-circle.p83 .value-bar {
  transform: rotate(299deg);
}

.progress-circle.p84 .value-bar {
  transform: rotate(302deg);
}

.progress-circle.p85 .value-bar {
  transform: rotate(306deg);
}

.progress-circle.p86 .value-bar {
  transform: rotate(310deg);
}

.progress-circle.p87 .value-bar {
  transform: rotate(313deg);
}

.progress-circle.p88 .value-bar {
  transform: rotate(317deg);
}

.progress-circle.p89 .value-bar {
  transform: rotate(320deg);
}

.progress-circle.p90 .value-bar {
  transform: rotate(324deg);
}

.progress-circle.p91 .value-bar {
  transform: rotate(328deg);
}

.progress-circle.p92 .value-bar {
  transform: rotate(331deg);
}

.progress-circle.p93 .value-bar {
  transform: rotate(335deg);
}

.progress-circle.p94 .value-bar {
  transform: rotate(338deg);
}

.progress-circle.p95 .value-bar {
  transform: rotate(342deg);
}

.progress-circle.p96 .value-bar {
  transform: rotate(346deg);
}

.progress-circle.p97 .value-bar {
  transform: rotate(349deg);
}

.progress-circle.p98 .value-bar {
  transform: rotate(353deg);
}

.progress-circle.p99 .value-bar {
  transform: rotate(356deg);
}

.progress-circle.p100 .value-bar {
  transform: rotate(360deg);
}
<div class="progress-circle p2">
  <span>2%</span>
  <div class="left-half-clipper">
    <div class="first50-bar"></div>
    <div class="value-bar"></div>
  </div>
</div>
<div class="progress-circle p8">
  <span>8%</span>
  <div class="left-half-clipper">
    <div class="first50-bar"></div>
    <div class="value-bar"></div>
  </div>
</div>
<div class="progress-circle p13">
  <span>13%</span>
  <div class="left-half-clipper">
    <div class="first50-bar"></div>
    <div class="value-bar"></div>
  </div>
</div>
<div class="progress-circle p26">
  <span>26%</span>
  <div class="left-half-clipper">
    <div class="first50-bar"></div>
    <div class="value-bar"></div>
  </div>
</div>
<div class="progress-circle over50 p69">
  <span>69%</span>
  <div class="left-half-clipper">
    <div class="first50-bar"></div>
    <div class="value-bar"></div>
  </div>
</div>
<div class="progress-circle over50 p100">
  <span>100%</span>
  <div class="left-half-clipper">
    <div class="first50-bar"></div>
    <div class="value-bar"></div>
  </div>
</div>

参考：

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