<template>
 <svg :height="option.size" :width="option.size" x-mlns="http://www.w3.org/200/svg">
  <circle
   :r="option.radius"
   :cx="option.cx"
   :cy="option.cy"
   :stroke="option.outerColor"
   :stroke-width="option.strokeWidth"
   fill="none"
   stroke-linecap="round"/>
  <circle
   id="progressRound"
   :stroke-dasharray="completenessHandle"
   :r="option.radius"
   :cx="option.cx"
   :cy="option.cy"
   :stroke-width="option.strokeWidth"
   :stroke="option.innerColor"
   fill="none"
   class="progressRound"
  />
 </svg>
</template>
<script>
export default {
 name: 'CommonLoopProgress',
 props: {
  completeness: {
   type: Number,
   required: true,
  },
  progressOption: {
   type: Object,
   default: () => {},
  },
 },
 data () {
  return {
  }
 },
 computed: {
  completenessHandle () {
   let circleLength = Math.floor(2 * Math.PI * this.option.radius)
   let completenessLength = this.completeness * circleLength
   return `${completenessLength},100000000`
  },
  option () {
   // 所有进度条的可配置项
   let baseOption = {
    radius: 20,
    strokeWidth: 5,
    outerColor: '#E6E6E6',
    innerColor: '#FFDE00',
   }
   Object.assign(baseOption, this.progressOption)
   // 中心位置自动生成
   baseOption.cy = baseOption.cx = baseOption.radius + baseOption.strokeWidth
   baseOption.size = (baseOption.radius + baseOption.strokeWidth) * 2
   return baseOption
  },
 },
}
</script>
<style scoped lang='stylus'>
@import '~stylus/_variables.styl';
@import '~stylus/_mixins.styl';

.progressRound {
 transform-origin: center;
 transform: rotate(-90deg);
 transition: stroke-dasharray 0.3s ease-in;
}
</style>