uni-app 圆形带刻度的进度条插件需求

针对你提出的 uni-app 圆形带刻度的进度条插件需求，可以通过自定义组件的方式来实现。以下是一个简单的示例代码，展示如何创建一个圆形带刻度的进度条组件。

1. 创建组件文件 CircleProgress.vue

<template>
  <view class="container">
    <canvas canvas-id="circleCanvas" class="circleCanvas"></canvas>
    <view class="ticks">
      <view v-for="(tick, index) in ticks" :key="index" :style="{ transform: `rotate(${tick.angle}deg)` }"></view>
    </view>
  </view>
</template>

<script>
export default {
  props: {
    progress: {
      type: Number,
      default: 0
    },
    max: {
      type: Number,
      default: 100
    },
    tickCount: {
      type: Number,
      default: 10
    }
  },
  data() {
    return {
      ticks: []
    };
  },
  mounted() {
    this.drawCircleProgress();
    this.generateTicks();
  },
  watch: {
    progress: 'drawCircleProgress',
    max: 'generateTicks'
  },
  methods: {
    drawCircleProgress() {
      const ctx = uni.createCanvasContext('circleCanvas');
      const radius = 100;
      const centerX = 200;
      const centerY = 200;
      const angle = (this.progress / this.max) * 360;
      
      ctx.clearRect(0, 0, 400, 400);
      ctx.beginPath();
      ctx.arc(centerX, centerY, radius, 0, angle * Math.PI / 180, false);
      ctx.setStrokeStyle('#4caf50');
      ctx.setLineWidth(10);
      ctx.stroke();
      ctx.draw();
    },
    generateTicks() {
      this.ticks = Array.from({ length: this.tickCount }, (_, i) => ({
        angle: (i / (this.tickCount - 1)) * 360
      }));
    }
  }
};
</script>

<style>
.container {
  position: relative;
  width: 400px;
  height: 400px;
  margin: 0 auto;
}
.circleCanvas {
  width: 100%;
  height: 100%;
}
.ticks {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.ticks view {
  position: absolute;
  width: 4px;
  height: 16px;
  background: #ccc;
  top: 50%;
  transform: translateX(-50%) translateY(-50%);
}
</style>

2. 使用组件

在你的页面文件中，比如 index.vue，引入并使用这个组件：

<template>
  <view>
    <CircleProgress :progress="progress" :max="100" :tickCount="10" />
    <button @click="incrementProgress">Increment Progress</button>
  </view>
</template>

<script>
import CircleProgress from '@/components/CircleProgress.vue';

export default {
  components: {
    CircleProgress
  },
  data() {
    return {
      progress: 0
    };
  },
  methods: {
    incrementProgress() {
      this.progress = (this.progress + 10) % 110; // Loop back to 0 after 100
    }
  }
};
</script>

这个示例展示了如何使用 canvas 绘制圆形进度条，并通过计算角度生成刻度。你可以根据需要进一步美化和扩展这个组件。