vue3 图形验证码组件

这是已经封装好的，用到直接复制改改数据就可以

//路径 ../components/piccode.vue
//vue3图形验证码
<template>
  <div class="img-verify">
    <canvas
      ref="verify"
      :width="width"
      :height="height"
      @click="handleDraw"
    ></canvas>
  </div>
</template>

<script>
import { reactive, onMounted, ref, toRefs, defineEmits } from "vue";
export default {
  setup(props, context) {
    const verify = ref(null);
    const emit = defineEmits(["get-code"]);
    const state = reactive({
      pool: "ABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890", // 字符串
      width: 120,
      height: 40,
      imgCode: "",
    });
    onMounted(() => {
      // 初始化绘制图片验证码
      state.imgCode = draw();
      context.emit("get-code", state.imgCode);
    });
    // 点击图片重新绘制
    const handleDraw = () => {