GCTC-NTGC / TalentCloud

class ProgressRing extends React.Component<

  ProgressRingProps,

  ProgressRingState

> {

  public constructor(props: ProgressRingProps) {

    super(props);

    const { radius, stroke } = this.props;

    this.state = {

      normalizedRadius: radius - stroke * 2,

      circumference: (radius - stroke * 2) * (2 * Math.PI),

    };

  }

  public render(): React.ReactElement {

    const { radius, stroke, progress, strokeColor, max } = this.props;

    const { normalizedRadius, circumference } = this.state;

    let strokeDashoffset = circumference - (progress / max) * circumference;

    if (strokeDashoffset < 0) {

      strokeDashoffset = 0;

    }

    return (

      <svg height={radius * 2} width={radius * 2}>

        <circle

          stroke="grey"

          fill="transparent"

          strokeWidth={stroke}

          strokeDasharray={`${circumference} ${circumference}`}

          style={{ strokeDashoffset: 0 }}

          r={normalizedRadius}

          cx={radius}

          cy={radius}

        />

        <circle

          stroke={strokeColor}

          fill="transparent"

          strokeWidth={stroke}

          strokeDasharray={`${circumference} ${circumference}`}

          style={{ strokeDashoffset }}

          r={normalizedRadius}

          cx={radius}

          cy={radius}

        />

      </svg>