Can vue be adaptive?

vue can achieve self-adaptation. The methods to achieve self-adaptation are: 1. Install the "scale-box" component through the "npm install" or "yarn add" command, and use "scale-box" to implement self-adaptation. Equipped with zoom; 2. Adapt by setting the device pixel ratio; 3. Set the zoom attribute through JS to adjust the zoom ratio to achieve adaptation.

The operating environment of this tutorial: Windows 10 system, vue2&&vue3 version, Dell G3 computer.

Can vue be adaptive?

able.

Detailed explanation of the three implementation methods of Vue screen adaptation

Using the scale-box component

Attribute:

• width Width default1920
• heightHeight default1080
• bgcBackground color default "transparent"
• delayAdaptive scaling anti-shake delay time (ms) Default 100

vue2 Version: vue2 large screen adaptation scaling component (vue2-scale-box - npm)

npm install vue2-scale-box

or

yarn add vue2-scale-box

Usage:

<template>
    <div>
        <scale-box :width="1920" :height="1080" bgc="transparent" :delay="100">
            <router-view />
        </scale-box>
    </div>
</template>
<script>
import ScaleBox from "vue2-scale-box";
export default {
    components: { ScaleBox },
};
</script>
<style lang="scss">
body {
    margin: 0;
    padding: 0;
    background: url("@/assets/bg.jpg");
}
</style>

vue3 version: vue3 large screen Adapt scaling component (vue3-scale-box - npm)

npm install vue3-scale-box

or

yarn add vue3-scale-box

Usage:

<template>
    <ScaleBox :width="1920" :height="1080" bgc="transparent" :delay="100">
        <router-view />
    </ScaleBox>
</template>
<script>
import ScaleBox from "vue3-scale-box";
</script>
<style lang="scss">
body {
    margin: 0;
    padding: 0;
    background: url("@/assets/bg.jpg");
}
</style>

Set the device pixel ratio (device pixel ratio)

In the project Create a new devicePixelRatio.js file under utils

class devicePixelRatio {
  /* 获取系统类型 */
  getSystem() {
    const agent = navigator.userAgent.toLowerCase();
    const isMac = /macintosh|mac os x/i.test(navigator.userAgent);
    if (isMac) return false;
    // 目前只针对 win 处理，其它系统暂无该情况，需要则继续在此添加即可
    if (agent.indexOf("windows") >= 0) return true;
  }
  /* 监听方法兼容写法 */
  addHandler(element, type, handler) {
    if (element.addEventListener) {
      element.addEventListener(type, handler, false);
    } else if (element.attachEvent) {
      element.attachEvent("on" + type, handler);
    } else {
      element["on" + type] = handler;
    }
  }
  /* 校正浏览器缩放比例 */
  correct() {
    // 页面devicePixelRatio（设备像素比例）变化后，计算页面body标签zoom修改其大小，来抵消devicePixelRatio带来的变化
    document.getElementsByTagName("body")[0].style.zoom =
      1 / window.devicePixelRatio;
  }
  /* 监听页面缩放 */
  watch() {
    const that = this;
    // 注意: 这个方法是解决全局有两个window.resize
    that.addHandler(window, "resize", function () {
      that.correct(); // 重新校正浏览器缩放比例
    });
  }
  /* 初始化页面比例 */
  init() {
    const that = this;
    // 判断设备，只在 win 系统下校正浏览器缩放比例
    if (that.getSystem()) {
      that.correct(); // 校正浏览器缩放比例
      that.watch(); // 监听页面缩放
    }
  }
}
export default devicePixelRatio;

Introduce and use it in App.vue

<template>
  <div>
    <router-view />
  </div>
</template>
<script>
import devPixelRatio from "@/utils/devicePixelRatio.js";
export default {
  created() {
    new devPixelRatio().init(); // 初始化页面比例
  },
};
</script>
<style lang="scss">
body {
  margin: 0;
  padding: 0;
}
</style>

Set zoom attribute adjustment through JS Scaling ratio

Create a new monitorZoom.js file under the project's utils

export const monitorZoom = () => {
  let ratio = 0,
    screen = window.screen,
    ua = navigator.userAgent.toLowerCase();
  if (window.devicePixelRatio !== undefined) {
    ratio = window.devicePixelRatio;
  } else if (~ua.indexOf("msie")) {
    if (screen.deviceXDPI && screen.logicalXDPI) {
      ratio = screen.deviceXDPI / screen.logicalXDPI;
    }
  } else if (
    window.outerWidth !== undefined &&
    window.innerWidth !== undefined
  ) {
    ratio = window.outerWidth / window.innerWidth;
  }
  if (ratio) {
    ratio = Math.round(ratio * 100);
  }
  return ratio;
};

Introduce and use it in main.js

import { monitorZoom } from "@/utils/monitorZoom.js";
const m = monitorZoom();
if (window.screen.width * window.devicePixelRatio >= 3840) {
  document.body.style.zoom = 100 / (Number(m) / 2); // 屏幕为 4k 时
} else {
  document.body.style.zoom = 100 / Number(m);
}

Complete code

import Vue from "vue";
import App from "./App.vue";
import router from "./router";
/* 调整缩放比例 start */
import { monitorZoom } from "@/utils/monitorZoom.js";
const m = monitorZoom();
if (window.screen.width * window.devicePixelRatio >= 3840) {
  document.body.style.zoom = 100 / (Number(m) / 2); // 屏幕为 4k 时
} else {
  document.body.style.zoom = 100 / Number(m);
}
/* 调整缩放比例 end */
Vue.config.productionTip = false;
new Vue({
  router,
  render: (h) => h(App),
}).$mount("#app");

Get the resolution of the screen

Get the width of the screen:

window.screen.width * window.devicePixelRatio

Get the height of the screen:

window.screen.height * window.devicePixelRatio

Mobile terminal adaptation (use postcss-px-to-viewport plug-in)

Official website:https://www.php.cn/link/2dd6d682870e39d9927b80f8232bd276

npm install postcss-px -to-viewport --save-dev

or

yarn add -D postcss-px-to-viewport

Configuration appropriate Configure the parameters of the plug-in (create a .postcssrc.js file in the project root directory [level with the src directory]) and paste the following code

module.exports = {
  plugins: {
    autoprefixer: {}, // 用来给不同的浏览器自动添加相应前缀，如-webkit-，-moz-等等
    "postcss-px-to-viewport": {
      unitToConvert: "px", // 需要转换的单位，默认为"px"
      viewportWidth: 390, // UI设计稿的宽度
      unitPrecision: 6, // 转换后的精度，即小数点位数
      propList: ["*"], // 指定转换的css属性的单位，*代表全部css属性的单位都进行转换
      viewportUnit: "vw", // 指定需要转换成的视窗单位，默认vw
      fontViewportUnit: "vw", // 指定字体需要转换成的视窗单位，默认vw
      selectorBlackList: ["wrap"], // 需要忽略的CSS选择器，不会转为视口单位，使用原有的px等单位
      minPixelValue: 1, // 默认值1，小于或等于1px则不进行转换
      mediaQuery: false, // 是否在媒体查询的css代码中也进行转换，默认false
      replace: true, // 是否直接更换属性值，而不添加备用属性
      exclude: [/node_modules/], // 忽略某些文件夹下的文件或特定文件，用正则做目录名匹配，例如 'node_modules' 下的文件
      landscape: false, // 是否处理横屏情况
      landscapeUnit: "vw", // 横屏时使用的视窗单位，默认vw
      landscapeWidth: 2048 // 横屏时使用的视口宽度
    }
  }
};

Recommended learning: "vue. js video tutorial》

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