IntersectingCirclesSpinner.js

import React from 'react';
import PropTypes from 'prop-types';
import styled from 'styled-components';

const IntersectingCircles = styled.div`
  height: ${(props) => props.size}px;
  width: ${(props) => props.size}px;
  position: relative;
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;

  * {
    box-sizing: border-box;
  }

  .spinnerBlock {
    animation: intersecting-circles-spinners-animation
      ${(props) => props.animationDuration}ms linear infinite;
    transform-origin: center;
    display: block;
    height: ${(props) => props.circleSize}px;
    width: ${(props) => props.circleSize}px;
  }
  .circle {
    display: block;
    border: 2px solid ${(props) => props.color};
    border-radius: 50%;
    height: 100%;
    width: 100%;
    position: absolute;
    left: 0;
    top: 0;
  }
  .circle:nth-child(1) {
    left: 0;
    top: 0;
  }
  .circle:nth-child(2) {
    left: ${(props) => props.circleSize * -0.36}px;
    top: ${(props) => props.circleSize * 0.2}px;
  }
  .circle:nth-child(3) {
    left: ${(props) => props.circleSize * -0.36}px;
    top: ${(props) => props.circleSize * -0.2}px;
  }
  .circle:nth-child(4) {
    left: 0;
    top: ${(props) => props.circleSize * -0.36}px;
  }
  .circle:nth-child(5) {
    left: ${(props) => props.circleSize * 0.36}px;
    top: ${(props) => props.circleSize * -0.2}px;
  }
  .circle:nth-child(6) {
    left: ${(props) => props.circleSize * 0.36}px;
    top: ${(props) => props.circleSize * 0.2}px;
  }
  .circle:nth-child(7) {
    left: 0;
    top: ${(props) => props.circleSize * 0.36}px;
  }
  @keyframes intersecting-circles-spinners-animation {
    from {
      transform: rotate(0deg);
    }
    to {
      transform: rotate(360deg);
    }
  }
`;

const propTypes = {
  size: PropTypes.number,
  animationDuration: PropTypes.number,
  color: PropTypes.string,
  className: PropTypes.string,
  style: PropTypes.object,
};

function generateCircles(num) {
  return Array.from({ length: num }).map((val, index) => (
    <span key={index} className="circle" />
  ));
}

const IntersectingCirclesSpinner = ({
  size = 70,
  color = '#fff',
  animationDuration = 1200,
  className = '',
  style,
  ...props
}) => {
  const circleSize = size / 2;

  return (
    <IntersectingCircles
      size={size}
      color={color}
      animationDuration={animationDuration}
      className={`intersecting-circles-spinner${
        className ? ' ' + className : ''
      }`}
      style={style}
      circleSize={circleSize}
      {...props}
    >
      <div className="spinnerBlock">{generateCircles(7)}</div>
    </IntersectingCircles>
  );
};

IntersectingCirclesSpinner.propTypes = propTypes;

export default IntersectingCirclesSpinner;