Vue3 动态数据大屏 scale

案例

<template>
  <div class="container">
    <div class="screen" ref="screen">
      <!-- 顶部 -->
      <div class="top"></div>
      <!-- 底部 -->
       <div class="bottom">
          <!-- 左侧 -->
          <div class="left"></div>
          <!-- 中间 -->
          <div class="center"></div>
          <!-- 右边 -->
          <div class="right"></div>
       </div>
    </div>
  </div>
</template>
<script setup lang="ts" name="Screen">
import {ref,reactive, onMounted} from "vue"
let screen = ref()


onMounted(() => {
    screen.value.style.transform = `scale(${getScale()}) translate(-50%,-50%)`
});
//定义大屏缩放比例
function getScale(w = 1920, h = 1080) {
    const ww = window.innerWidth / w;
    const wh = window.innerHeight / h;
    return ww < wh ? ww : wh;
}
//监听视口变化
window.onresize = () => {
    screen.value.style.transform = `scale(${getScale()}) translate(-50%,-50%)`
}

</script>
<style lang="scss" scoped>
.container{
  width: 100vw;
  height: 100vh;
  background: url('./images/bg.png') no-repeat;
  background-size: cover;
  .screen{
    width: 1920px;
    height: 1080px;
    // 定位
    position: fixed;
    top: 50%;
    left: 50%;
    transform-origin: left top;
    background: red; //为了观察，后期去掉

    .top{
      height: 40px;
      width: 100%;
      background: cyan;
    }
  }
}



</style>