Bootstrap

vue数据大屏自动适配,scale

应用场景:数据屏自动适配屏幕大小

原理:transform的属性scale将盒子整体等比放大缩小

废话不多说,直接上代码!

<template>
    <div class="container">
        <!-- 数据大屏展示内容区域 -->
        <div class="screen" ref="screen">
        </div>
    </div>
</template>

<script setup lang='ts'>
import { ref,onMounted } from 'vue';
//获取数据大屏展示内容盒子的DOM元素
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 scoped lang='less'>
.container {
    width: 100vw;
    height: 100vh;
    background: url(./images/bg.png) no-repeat;
    background-size: cover;

    .screen {
        position: fixed;
        width: 1920px;
        height: 1080px;
        left: 50%;
        top: 50%;
        transform-origin: left top;
        background-color: red;
    }
}
</style>

getScale(w = 1920, h = 1080)的宽高为你要设计的数据大屏宽高,这时你就会发现页面就是响应式的了,一次性解决所有问题,减少vh,vw适配的计算烦劳。

 

 

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