Vue 图片监听鼠标滑轮滚动实现图片缩小放大功能(实现思路)

<div id="productDrawing">
    <div class="alert">温馨提示：查看图纸时滚动鼠标可以放大缩小</div>
    <div class="productDrawing_Img" @mousewheel="handerPictu">
      <img
        id="oImg"
        src="../images/1.png"
        alt=""
        :style="{ width: imgWidth, height: imgHeight }"
      />
    </div>
  </div>

  handerPictu(e) {
      const img = document.getElementById("oImg");
      this.imgWidth = img.offsetWidth || img.width || img.clientWidth;
      this.imgHeight = img.offsetHeight || img.height || img.clientHeight;
      if (e.deltaY > 0) {
        console.log("鼠标向下滚动，图片缩小");
        this.imgWidth = `${this.imgWidth - 10}px`;
        this.imgHeight = `${this.imgHeight - 10}px`;
      } else {
        console.log("鼠标向上滚动，图片放大");
        this.imgWidth = `${this.imgWidth + 10}px`;
        this.imgHeight = `${this.imgHeight + 10}px`;
      }
      //   this.imgWidth = `${this.imgWidth}px`;
      console.log(this.imgWidth, this.imgHeight, "hou");
    },
  },

<template>
  <div id="productDrawing">
    <div class="alert">温馨提示：查看图纸时滚动鼠标可以放大缩小</div>
    <div class="productDrawing_Img" @mousewheel="handerPictu">
      <img
        id="oImg"
        src="../images/1.png"
        alt=""
        :style="{ width: imgWidth, height: imgHeight }"
      />
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      imgWidth: "auto",
      imgHeight: "auto",
    };
  },
  mounted() {},
  methods: {
    handerPictu(e) {
      const img = document.getElementById("oImg");
      console.log(img.offsetWidth, img.width, img.clientWidth);
      this.imgWidth = img.offsetWidth || img.width || img.clientWidth;
      this.imgHeight = img.offsetHeight || img.height || img.clientHeight;
      if (e.deltaY > 0) {
        console.log("鼠标向下滚动，图片缩小");
        this.imgWidth = `${this.imgWidth - 10}px`;
        this.imgHeight = `${this.imgHeight - 10}px`;
      } else {
        console.log("鼠标向上滚动，图片放大");
        this.imgWidth = `${this.imgWidth + 10}px`;
        this.imgHeight = `${this.imgHeight + 10}px`;
      }
      //   this.imgWidth = `${this.imgWidth}px`;
      console.log(this.imgWidth, this.imgHeight, "hou");
    },
  },
};
</script>
<style scoped lang="scss">
#productDrawing {
  width: 580px;
  height: 480px;
  border: 1px solid #edf1f5;
  overflow: hidden;
  .alert {
    height: 30px;
    font-size: 12px;
    line-height: 30px;
    border-radius: 2px;
    color: #9e7700;
    text-align: center;
    background: linear-gradient(90deg, #ffffff 0%, #fff7d3 50%, #fcfcfc 100%);
  }
  .productDrawing_Img {
    width: 580px;
    height: 450px;
    overflow: hidden;
    display: table-cell;
    vertical-align: middle;
    text-align: center;
    img {
      max-width: 100%;
      max-height: 100%;
    }
  }
}
</style>