ant-design-vue/components/vc-progress/src/Line.js

import { initDefaultProps } from '../../_util/props-util'
import enhancer from './enhancer'
import { propTypes, defaultProps } from './types'

const Line = {
  props: initDefaultProps(propTypes, defaultProps),
  render () {
    const {
      percent,
      prefixCls,
      strokeColor,
      strokeLinecap,
      strokeWidth,
      trailColor,
      trailWidth,
      ...restProps
    } = this.$props

    delete restProps.gapPosition

    const pathStyle = {
      strokeDasharray: '100px, 100px',
      strokeDashoffset: `${(100 - percent)}px`,
      transition: 'stroke-dashoffset 0.3s ease 0s, stroke 0.3s linear',
    }

    const center = strokeWidth / 2
    const right = 100 - (strokeWidth / 2)
    const pathString =
          `M ${strokeLinecap === 'round' ? center : 0},${center}
           L ${strokeLinecap === 'round' ? right : 100},${center}`
    const viewBoxString = `0 0 100 ${strokeWidth}`

    const pathFirst = {
      attrs: {
        'd': pathString,
        'stroke-linecap': strokeLinecap,
        'stroke': trailColor,
        'stroke-width': trailWidth || strokeWidth,
        'fill-opacity': '0',
      },
      class: `${prefixCls}-line-trail`,
    }
    const pathSecond = {
      attrs: {
        'd': pathString,
        'stroke-linecap': strokeLinecap,
        'stroke': strokeColor,
        'stroke-width': strokeWidth,
        'fill-opacity': '0',
      },
      class: `${prefixCls}-line-path`,
      style: pathStyle,
      ref: 'svgPathRef',
    }
    return (
      <svg
        class={`${prefixCls}-line`}
        viewBox={viewBoxString}
        preserveAspectRatio='none'
        {...restProps}
      >
        <path
          {...pathFirst}
        />
        <path
          {...pathSecond}
        />
      </svg>
    )
  },
}

export default enhancer(Line)