Responsive and Animated Pie Charts

///////////////////
// HTML
//////////////////

body {
  font-family: "Open Sans", Arial;
  background: #EEE;
  text-align: center;
}
body * {
  font-weight: 300;
  margin: 0;
  padding: 0;
}

@-webkit-keyframes bake-pie {
  from {
    transform: rotate(0deg) translate3d(0, 0, 0);
  }
}

@keyframes bake-pie {
  from {
    transform: rotate(0deg) translate3d(0, 0, 0);
  }
}
.pie-chart {
  font-family: "Open Sans", Arial;
}
.pie-chart--wrapper {
  width: 400px;
  margin: 30px auto;
  text-align: center;
}
.pie-chart__pie, .pie-chart__legend {
  display: inline-block;
  vertical-align: top;
}
.pie-chart__pie {
  position: relative;
  height: 200px;
  width: 200px;
  margin: 10px auto 35px;
}
.pie-chart__pie::before {
  content: "";
  display: block;
  position: absolute;
  z-index: 1;
  width: 100px;
  height: 100px;
  background: #EEE;
  border-radius: 50%;
  top: 50px;
  left: 50px;
}
.pie-chart__pie::after {
  content: "";
  display: block;
  width: 120px;
  height: 2px;
  background: rgba(0, 0, 0, 0.1);
  border-radius: 50%;
  box-shadow: 0 0 3px 4px rgba(0, 0, 0, 0.1);
  margin: 220px auto;
}

.slice {
  position: absolute;
  width: 200px;
  height: 200px;
  clip: rect(0px, 200px, 200px, 100px);
  -webkit-animation: bake-pie 1s;
          animation: bake-pie 1s;
}
.slice span {
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  background-color: black;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  clip: rect(0px, 200px, 200px, 100px);
}

.pie-chart__legend {
  display: block;
  list-style-type: none;
  padding: 0;
  margin: 0 auto;
  background: #FFF;
  padding: 0.75em 0.75em 0.05em;
  font-size: 13px;
  box-shadow: 1px 1px 0 #DDD, 2px 2px 0 #BBB;
  text-align: left;
  width: 65%;
}
.pie-chart__legend li {
  height: 1.25em;
  margin-bottom: 0.7em;
  padding-left: 0.5em;
  border-left: 1.25em solid black;
}
.pie-chart__legend em {
  font-style: normal;
}
.pie-chart__legend span {
  float: right;
}

.pie-charts {
  display: flex;
  flex-direction: row;
}
@media (max-width: 500px) {
  .pie-charts {
    flex-direction: column;
  }
}

///////////////
// HTML
///////////////
  
<div class="wrapper">
  <h1>Answered Questions</h1>
  <div class="pie-charts">
    <div class="pieID--micro-skills pie-chart--wrapper">
      <h2>Micro-Skills</h2>
      <div class="pie-chart">
        <div class="pie-chart__pie"></div>
        <ul class="pie-chart__legend">
          <li><em>Additive</em><span>642</span></li>
          <li><em>Multiplicative</em><span>358</span></li>
        </ul>
      </div>
    </div>
    <div class="pieID--categories pie-chart--wrapper">
      <h2>Categories</h2>
      <div class="pie-chart">
        <div class="pie-chart__pie"></div>
        <ul class="pie-chart__legend">
          <li><em>Horizontal</em><span>768</span></li>
          <li><em>Vertical</em><span>232</span></li>
        </ul>
      </div>
    </div>
    <div class="pieID--operations pie-chart--wrapper">
      <h2>Operations</h2>
      <div class="pie-chart">
        <div class="pie-chart__pie"></div>
        <ul class="pie-chart__legend">
          <li><em>Addition</em><span>486</span></li>
          <li><em>Subtraction</em><span>156</span></li>
          <li><em>Multiplication</em><span>215</span></li>
          <li><em>Division</em><span>143</span></li>
        </ul>
      </div>
    </div>
  </div>
</div>

/////////////////
//JQuery
/////////////////
  
function sliceSize(dataNum, dataTotal) {
  return (dataNum / dataTotal) * 360;
}

function addSlice(id, sliceSize, pieElement, offset, sliceID, color) {
  $(pieElement).append("<div class='slice "+ sliceID + "'><span></span></div>");
  var offset = offset - 1;
  var sizeRotation = -179 + sliceSize;

$(id + " ." + sliceID).css({
    "transform": "rotate(" + offset + "deg) translate3d(0,0,0)"
  });

$(id + " ." + sliceID + " span").css({
    "transform"       : "rotate(" + sizeRotation + "deg) translate3d(0,0,0)",
    "background-color": color
  });
}

function iterateSlices(id, sliceSize, pieElement, offset, dataCount, sliceCount, color) {
  var
    maxSize = 179,
    sliceID = "s" + dataCount + "-" + sliceCount;

if( sliceSize <= maxSize ) {
    addSlice(id, sliceSize, pieElement, offset, sliceID, color);
  } else {
    addSlice(id, maxSize, pieElement, offset, sliceID, color);
    iterateSlices(id, sliceSize-maxSize, pieElement, offset+maxSize, dataCount, sliceCount+1, color);
  }
}

function createPie(id) {
  var
    listData      = [],
    listTotal     = 0,
    offset        = 0,
    i             = 0,
    pieElement    = id + " .pie-chart__pie"
    dataElement   = id + " .pie-chart__legend"

color         = [
      "cornflowerblue",
      "olivedrab",
      "orange",
      "tomato",
      "crimson",
      "purple",
      "turquoise",
      "forestgreen",
      "navy"
    ];

color = shuffle( color );

$(dataElement+" span").each(function() {
    listData.push(Number($(this).html()));
  });

for(i = 0; i < listData.length; i++) {
    listTotal += listData[i];
  }

for(i=0; i < listData.length; i++) {
    var size = sliceSize(listData[i], listTotal);
    iterateSlices(id, size, pieElement, offset, i, 0, color[i]);
    $(dataElement + " li:nth-child(" + (i + 1) + ")").css("border-color", color[i]);
    offset += size;
  }
}

function shuffle(a) {
    var j, x, i;
    for (i = a.length; i; i--) {
        j = Math.floor(Math.random() * i);
        x = a[i - 1];
        a[i - 1] = a[j];
        a[j] = x;
    }

return a;
}

function createPieCharts() {
  createPie('.pieID--micro-skills' );
  createPie('.pieID--categories' );
  createPie('.pieID--operations' );
}

createPieCharts();

Thanks to Temani Afif, code on CodePen.

OutPut

Micro-Skills

Additive642
Multiplicative358

Operations

Addition486
Subtraction156
Multiplication215
Division143

Monday, January 9, 2023

Responsive and Animated Pie Charts with HTML and CSS

OutPut

Micro-Skills

Categories

Operations

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