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vue实现环形进度组件

2026-01-20 02:49:41VUE

实现环形进度组件

环形进度组件可以通过SVG或Canvas实现，以下是基于SVG的实现方法：

定义组件模板

<template>
  <div class="circle-progress">
    <svg :width="size" :height="size" viewBox="0 0 100 100">
      <circle 
        cx="50" 
        cy="50" 
        :r="radius" 
        fill="none" 
        :stroke="backgroundColor" 
        :stroke-width="strokeWidth"
      />
      <circle 
        cx="50" 
        cy="50" 
        :r="radius" 
        fill="none" 
        :stroke="progressColor" 
        :stroke-width="strokeWidth"
        :stroke-dasharray="dashArray"
        :stroke-dashoffset="dashOffset"
        stroke-linecap="round"
      />
      <text 
        x="50" 
        y="50" 
        text-anchor="middle" 
        dominant-baseline="middle"
        :fill="textColor"
      >
        {{ progress }}%
      </text>
    </svg>
  </div>
</template>

定义组件逻辑

<script>
export default {
  props: {
    progress: {
      type: Number,
      default: 0,
      validator: value => value >= 0 && value <= 100
    },
    size: {
      type: Number,
      default: 200
    },
    strokeWidth: {
      type: Number,
      default: 10
    },
    backgroundColor: {
      type: String,
      default: '#eee'
    },
    progressColor: {
      type: String,
      default: '#42b983'
    },
    textColor: {
      type: String,
      default: '#333'
    }
  },
  computed: {
    radius() {
      return 50 - this.strokeWidth / 2
    },
    circumference() {
      return 2 * Math.PI * this.radius
    },
    dashArray() {
      return this.circumference
    },
    dashOffset() {
      return this.circumference * (1 - this.progress / 100)
    }
  }
}
</script>

添加样式

<style scoped>
.circle-progress {
  display: inline-block;
  position: relative;
}

.circle-progress circle {
  transition: stroke-dashoffset 0.5s ease;
}
</style>

使用组件示例

<template>
  <div>
    <circle-progress :progress="75" />
  </div>
</template>

<script>
import CircleProgress from './CircleProgress.vue'

export default {
  components: {
    CircleProgress
  }
}
</script>