[react] circle spinner

CircleSpinner.js

import React from 'react'
import styled from 'styled-components'
import { pTr } from '../../styles/typography'

/**
 * http://tobiasahlin.com/spinkit/
 */
const CubeSpinnerContainer = styled.div`
  position: ${({ isAbsolute }) => (isAbsolute ? 'absolute' : 'fixed')};
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 2000;

  .sk-fading-circle {
    margin: 100px auto;
    width: ${({ size }) => (size ? size : pTr(40))};
    height: ${({ size }) => (size ? size : pTr(40))};
    position: relative;
  }

  .sk-fading-circle .sk-circle {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
  }

  .sk-fading-circle .sk-circle:before {
    content: '';
    display: block;
    margin: 0 auto;
    width: 15%;
    height: 15%;
    background-color: #333;
    border-radius: 100%;
    -webkit-animation: sk-circleFadeDelay 1.2s infinite ease-in-out both;
    animation: sk-circleFadeDelay 1.2s infinite ease-in-out both;
  }
  .sk-fading-circle .sk-circle2 {
    -webkit-transform: rotate(30deg);
    -ms-transform: rotate(30deg);
    transform: rotate(30deg);
  }
  .sk-fading-circle .sk-circle3 {
    -webkit-transform: rotate(60deg);
    -ms-transform: rotate(60deg);
    transform: rotate(60deg);
  }
  .sk-fading-circle .sk-circle4 {
    -webkit-transform: rotate(90deg);
    -ms-transform: rotate(90deg);
    transform: rotate(90deg);
  }
  .sk-fading-circle .sk-circle5 {
    -webkit-transform: rotate(120deg);
    -ms-transform: rotate(120deg);
    transform: rotate(120deg);
  }
  .sk-fading-circle .sk-circle6 {
    -webkit-transform: rotate(150deg);
    -ms-transform: rotate(150deg);
    transform: rotate(150deg);
  }
  .sk-fading-circle .sk-circle7 {
    -webkit-transform: rotate(180deg);
    -ms-transform: rotate(180deg);
    transform: rotate(180deg);
  }
  .sk-fading-circle .sk-circle8 {
    -webkit-transform: rotate(210deg);
    -ms-transform: rotate(210deg);
    transform: rotate(210deg);
  }
  .sk-fading-circle .sk-circle9 {
    -webkit-transform: rotate(240deg);
    -ms-transform: rotate(240deg);
    transform: rotate(240deg);
  }
  .sk-fading-circle .sk-circle10 {
    -webkit-transform: rotate(270deg);
    -ms-transform: rotate(270deg);
    transform: rotate(270deg);
  }
  .sk-fading-circle .sk-circle11 {
    -webkit-transform: rotate(300deg);
    -ms-transform: rotate(300deg);
    transform: rotate(300deg);
  }
  .sk-fading-circle .sk-circle12 {
    -webkit-transform: rotate(330deg);
    -ms-transform: rotate(330deg);
    transform: rotate(330deg);
  }
  .sk-fading-circle .sk-circle2:before {
    -webkit-animation-delay: -1.1s;
    animation-delay: -1.1s;
  }
  .sk-fading-circle .sk-circle3:before {
    -webkit-animation-delay: -1s;
    animation-delay: -1s;
  }
  .sk-fading-circle .sk-circle4:before {
    -webkit-animation-delay: -0.9s;
    animation-delay: -0.9s;
  }
  .sk-fading-circle .sk-circle5:before {
    -webkit-animation-delay: -0.8s;
    animation-delay: -0.8s;
  }
  .sk-fading-circle .sk-circle6:before {
    -webkit-animation-delay: -0.7s;
    animation-delay: -0.7s;
  }
  .sk-fading-circle .sk-circle7:before {
    -webkit-animation-delay: -0.6s;
    animation-delay: -0.6s;
  }
  .sk-fading-circle .sk-circle8:before {
    -webkit-animation-delay: -0.5s;
    animation-delay: -0.5s;
  }
  .sk-fading-circle .sk-circle9:before {
    -webkit-animation-delay: -0.4s;
    animation-delay: -0.4s;
  }
  .sk-fading-circle .sk-circle10:before {
    -webkit-animation-delay: -0.3s;
    animation-delay: -0.3s;
  }
  .sk-fading-circle .sk-circle11:before {
    -webkit-animation-delay: -0.2s;
    animation-delay: -0.2s;
  }
  .sk-fading-circle .sk-circle12:before {
    -webkit-animation-delay: -0.1s;
    animation-delay: -0.1s;
  }

  @-webkit-keyframes sk-circleFadeDelay {
    0%,
    39%,
    100% {
      opacity: 0;
    }
    40% {
      opacity: 1;
    }
  }

  @keyframes sk-circleFadeDelay {
    0%,
    39%,
    100% {
      opacity: 0;
    }
    40% {
      opacity: 1;
    }
  }
`

function CubeSpinner({ isAbsolute, size }) {
  return (
    <CubeSpinnerContainer isAbsolute={isAbsolute} size={size}>
      <div class="sk-fading-circle">
        <div class="sk-circle1 sk-circle" />
        <div class="sk-circle2 sk-circle" />
        <div class="sk-circle3 sk-circle" />
        <div class="sk-circle4 sk-circle" />
        <div class="sk-circle5 sk-circle" />
        <div class="sk-circle6 sk-circle" />
        <div class="sk-circle7 sk-circle" />
        <div class="sk-circle8 sk-circle" />
        <div class="sk-circle9 sk-circle" />
        <div class="sk-circle10 sk-circle" />
        <div class="sk-circle11 sk-circle" />
        <div class="sk-circle12 sk-circle" />
      </div>
    </CubeSpinnerContainer>
  )
}

export default CubeSpinner