实现一个vue放大镜功能完整代码

以下是一个Vue的放大镜组件的完整代码：

<template>
  <div class="magnifier-container">
    <div class="magnifier-wrapper">
      <div class="magnifier-image-wrapper">
        <img
          class="magnifier-image"
          :src="imageSrc"
          :style="{ transform: 'scale(' + scale + ')', left: -left + 'px', top: -top + 'px' }"
          @mousemove="handleMouseMove"
          @mouseenter="handleMouseEnter"
          @mouseleave="handleMouseLeave"
        />
      </div>
      <div class="magnifier-glass" :style="{ width: size + 'px', height: size + 'px' }"></div>
    </div>
  </div>
</template>

<script>
export default {
  props: {
    imageSrc: {
      type: String,
      required: true,
    },
    size: {
      type: Number,
      default: 200,
    },
    scale: {
      type: Number,
      default: 2,
    },
  },
  data() {
    return {
      left: 0,
      top: 0,
      showMagnifier: false,
    };
  },
  methods: {
    handleMouseMove(event) {
      if (this.showMagnifier) {
        const { left, top } = event.target.getBoundingClientRect();
        const x = event.clientX - left;
        const y = event.clientY - top;
        const halfSize = this.size / 2;
        const maxX = event.target.clientWidth - halfSize;
        const maxY = event.target.clientHeight - halfSize;

        this.left = Math.min(Math.max(x - halfSize, 0), maxX);
        this.top = Math.min(Math.max(y - halfSize, 0), maxY);
      }
    },
    handleMouseEnter() {
      this.showMagnifier = true;
    },
    handleMouseLeave() {
      this.showMagnifier = false;
    },
  },
};
</script>

<style scoped>
.magnifier-container {
  position: relative;
}

.magnifier-wrapper {
  position: relative;
  display: inline-block;
}

.magnifier-image-wrapper {
  overflow: hidden;
  position: relative;
  display: inline-block;
}

.magnifier-image {
  display: block;
  position: absolute;
  transition: transform 0.1s linear;
}

.magnifier-glass {
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.3);
  z-index: 999;
  transition: opacity 0.1s linear;
  opacity: 0;
}

.magnifier-wrapper:hover .magnifier-glass {
  opacity: 1;
}
</style>

这个组件接受三个props：imageSrc表示要展示的图片的地址，size表示放大镜的直径，scale表示放大倍数。组件中的handleMouseMove方法根据鼠标的位置计算出放大镜在图片上的位置，handleMouseEnter和handleMouseLeave方法分别在鼠标移入和移出图片时控制放大镜的显示和隐藏。组件中的样式基本上都是用来控制放大镜的样式和位置的。