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tz-postcss-px-to-viewport

v1.0.0

Published

A CSS post-processor that converts px to viewport units (vw, vh, vmin, vmax).

Downloads

5

Readme

tz-postcss-px-to-viewport

基于postcss-px-to-viewport插件稍加改造的 和使用postcss-px-to-viewport 是基本一样的,只是多处理了vant等375尺寸问题,你也可以选择克隆到自己仓库中使用,也可以直接使用笔者改的

顺便把插件升级了postcss到v8+,规避了postcss.plugin was deprecated. Migration guide: 的警告,

npm i tz-postcss-px-to-viewport
锁死v0.0.2,则为不更新postcss版本

简介(为什么有)

一直希望在vite 中 使用 postcss-px-to-viewport 时可以设置不同的设计尺寸,比如vant是375设计的

而我们可能是750或其他尺寸,一直找了好久都没有合适的解决方案(有个webpack的,不过vite的貌似不行),如果有知道其他好的解决方法的,麻烦告知一下,感激不尽!

干脆就稍加改了一下postcss-px-to-viewport的代码

其实就是在src/index.js中加入了以下代码,把当前文件路径暴露出去,接收一个新的viewportWidth并赋值给opts

具体可以看下源代码

if(opts.customFun){
  opts.viewportWidth = opts.customFun({file:rule.source.input.file});
}

配置时使用tz-postcss-px-to-viewport

const path = require("path");
module.exports = () => {
  return {
    plugins: {
      autoprefixer: {
        overrideBrowserslist: ["Android 4.1", "iOS 7.1", "Chrome > 31", "ff > 31", "ie >= 8"],
      },
      // 修改插件名称
      "tz-postcss-px-to-viewport": {
        unitToConvert: "px", // 要转化的单位
        viewportWidth: 750, // 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: ["ignore"], // 指定不转换为视窗单位的类名,
        minPixelValue: 1, // 默认值1,小于或等于1px则不进行转换
        mediaQuery: true, // 是否在媒体查询的css代码中也进行转换,默认false
        replace: true, // 是否转换后直接更换属性值
        exclude: [], // 设置忽略文件,用正则做目录名匹配
        landscape: false, // 是否处理横屏情况
        // 如果没有使用其他的尺寸来设计,下面这个方法可以不需要,比如vant是375的
        customFun: ({ file }) => {
          // 这个自定义的方法是针对处理vant组件下的设计稿为375问题
          const designWidth = path.join(file).includes(path.join("node_modules", "vant")) ? 375 : 750;
          return designWidth;
        },
      },
    },
  };
};

https://github.com/vitejs/vite/issues/4653 多个配置,这将导致插件处理两次,优点缺点都很明显,具体怎么用,见人见智了

const px2viewport = require("postcss-px-to-viewport");
const autoprefixer = require("autoprefixer");
module.exports = () => {
  return {
    plugins: [
      autoprefixer({
        overrideBrowserslist: ["Android 4.1", "iOS 7.1", "Chrome > 31", "ff > 31", "ie >= 8"],
      }),
      px2viewport({
        unitToConvert: "px", // 要转化的单位
        viewportWidth: 375, // 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: ["ignore"], // 指定不转换为视窗单位的类名,
        minPixelValue: 1, // 默认值1,小于或等于1px则不进行转换
        mediaQuery: true, // 是否在媒体查询的css代码中也进行转换,默认false
        replace: true, // 是否转换后直接更换属性值
        exclude: [/^(?!.*node_modules\/vant)/], // 设置忽略文件,用正则做目录名匹配
        landscape: false, // 是否处理横屏情况
      }),
      px2viewport({
        unitToConvert: "px", // 要转化的单位
        viewportWidth: 750, // 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: ["ignore"], // 指定不转换为视窗单位的类名,
        minPixelValue: 1, // 默认值1,小于或等于1px则不进行转换
        mediaQuery: true, // 是否在媒体查询的css代码中也进行转换,默认false
        replace: true, // 是否转换后直接更换属性值
        exclude: [/node_modules\/vant/i], // 设置忽略文件,用正则做目录名匹配
        landscape: false, // 是否处理横屏情况
      }),
    ],
  };
};