首先安裝「主題生成工具」,能夠全局安裝或者安裝在當前項目下,推薦安裝在項目裏,方便別人 clone 項目時能直接安裝依賴並啓動。css
yarn add element-theme --dev
安裝白堊主題,能夠從 npm 安裝或者從 GitHub 拉取最新代碼,這裏從 npm 安裝。vue
yarn add element-theme-chalk -D
主題生成工具安裝成功後,若是全局安裝能夠在命令行裏經過 et
調用工具,若是安裝在當前目錄下,須要經過 node_modules/.bin/et
訪問到命令。執行 -i
初始化變量文件。默認輸出到 element-variables.scss
,固然你能夠傳參數指定文件輸出目錄。node
node_modules/.bin/et -i
執行命令npm
命令執行成功以後,會在根目錄生成 scss文件 element-variables.scss 。element-ui
在 element-variables.scss 文件裏修改 $–color-primary:#4b5f6e,即你想要的主題顏色json
執行主題編譯命令生成主題,根目錄會生成一個theme的文件夾 。app
node_modules/.bin/et
把生成的主題按顏色更名放置 src/theme 目錄下。工具
在 main.js 中 import ‘所在路徑/index.css’。測試
從新加載後,咱們看到按鈕顏色已經不是默認的藍色了。ui
index.vue
<template> <el-color-picker class="theme-picker" popper-class="theme-picker-dropdown" v-model="theme"></el-color-picker> </template> <script> const version = require('element-ui/package.json').version // element-ui version from node_modules const ORIGINAL_THEME = '#409EFF' // default color export default { data() { return { chalk: '', // content of theme-chalk css theme: ORIGINAL_THEME } }, watch: { theme(val, oldVal) { if (typeof val !== 'string') return const themeCluster = this.getThemeCluster(val.replace('#', '')) const originalCluster = this.getThemeCluster(oldVal.replace('#', '')) console.log(themeCluster, originalCluster) const getHandler = (variable, id) => { return () => { const originalCluster = this.getThemeCluster(ORIGINAL_THEME.replace('#', '')) const newStyle = this.updateStyle(this[variable], originalCluster, themeCluster) let styleTag = document.getElementById(id) if (!styleTag) { styleTag = document.createElement('style') styleTag.setAttribute('id', id) document.head.appendChild(styleTag) } styleTag.innerText = newStyle } } const chalkHandler = getHandler('chalk', 'chalk-style') if (!this.chalk) { const url = `https://unpkg.com/element-ui@${version}/lib/theme-chalk/index.css` this.getCSSString(url, chalkHandler, 'chalk') } else { chalkHandler() } const styles = [].slice.call(document.querySelectorAll('style')) .filter(style => { const text = style.innerText return new RegExp(oldVal, 'i').test(text) && !/Chalk Variables/.test(text) }) styles.forEach(style => { const { innerText } = style if (typeof innerText !== 'string') return style.innerText = this.updateStyle(innerText, originalCluster, themeCluster) }) this.$message({ message: '換膚成功', type: 'success' }) } }, methods: { updateStyle(style, oldCluster, newCluster) { let newStyle = style oldCluster.forEach((color, index) => { newStyle = newStyle.replace(new RegExp(color, 'ig'), newCluster[index]) }) return newStyle }, getCSSString(url, callback, variable) { const xhr = new XMLHttpRequest() xhr.onreadystatechange = () => { if (xhr.readyState === 4 && xhr.status === 200) { this[variable] = xhr.responseText.replace(/@font-face{[^}]+}/, '') callback() } } xhr.open('GET', url) xhr.send() }, getThemeCluster(theme) { const tintColor = (color, tint) => { let red = parseInt(color.slice(0, 2), 16) let green = parseInt(color.slice(2, 4), 16) let blue = parseInt(color.slice(4, 6), 16) if (tint === 0) { // when primary color is in its rgb space return [red, green, blue].join(',') } else { red += Math.round(tint * (255 - red)) green += Math.round(tint * (255 - green)) blue += Math.round(tint * (255 - blue)) red = red.toString(16) green = green.toString(16) blue = blue.toString(16) return `#${red}${green}${blue}` } } const shadeColor = (color, shade) => { let red = parseInt(color.slice(0, 2), 16) let green = parseInt(color.slice(2, 4), 16) let blue = parseInt(color.slice(4, 6), 16) red = Math.round((1 - shade) * red) green = Math.round((1 - shade) * green) blue = Math.round((1 - shade) * blue) red = red.toString(16) green = green.toString(16) blue = blue.toString(16) return `#${red}${green}${blue}` } const clusters = [theme] for (let i = 0; i <= 9; i++) { clusters.push(tintColor(theme, Number((i / 10).toFixed(2)))) } clusters.push(shadeColor(theme, 0.1)) return clusters } } } </script> <style> .theme-picker .el-color-picker__trigger { vertical-align: middle; } .theme-picker-dropdown .el-color-dropdown__link-btn { display: none; } </style>
在 Home.vue 中引入
在語言切換左邊添加換膚組件
點擊組件,選擇一個顏色肯定
咱們看到相關主題顏色即刻生效
退回登陸界面查看