一、搭建好项目的环境。
二、根据elementui官网的自定义主题(http://element.eleme.io/#/zh-cn/component/custom-theme)来安装【主题生成工具】。
三、在 element-variables.scss 文件里修改 $–color-primary:#409eff,即你想要的主题颜色。然后,执行主题编译命令生成主题(et),根目录会生成一个theme文件夹。
四、封装动态换肤色themepicker.vue组件。
<template> <el-color-picker class="theme-picker" popper-class="theme-picker-dropdown" v-model="theme" :size="size"> </el-color-picker> </template> <script> const version = require('element-ui/package.json').version // element-ui version from node_modules const original_theme = '#409eff' // default color export default { name: 'themepicker', props: { default: { // 初始化主题,可由外部传入 type: string, //default: '#eb815b' default: ""+localstorage.getitem("tremepackers")+"" }, size: { // 初始化主题,可由外部传入 type: string, default: 'small' } }, data() { return { chalk: '', // content of theme-chalk css theme: original_theme, showsuccess: true, // 是否弹出换肤成功消息 } }, mounted() { if(this.default != null) { this.theme = this.default this.$emit('onthemechange', this.theme) this.showsuccess = false } }, watch: { theme(val, oldval) { if (typeof val !== 'string') return const themecluster = this.getthemecluster(val.replace('#', '')) const originalcluster = this.getthemecluster(oldval.replace('#', '')) 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@${version}/lib/theme-chalk/index.css` this.getcssstring(url, chalkhandler, 'chalk') } else { chalkhandler() } const styles = [].slice.call(document.queryselectorall('style')) .filter(style => { const text = style.innertext return new regexp(oldval, 'i').test(text) && !/chalk variables/.test(text) }) styles.foreach(style => { const { innertext } = style if (typeof innertext !== 'string') return style.innertext = this.updatestyle(innertext, originalcluster, themecluster) }) // 响应外部操作 this.$emit('onthemechange', val) //存入localstorage localstorage.setitem('tremepackers',val); if(this.showsuccess) { this.$message({ message: '换肤成功', type: 'success' }) } else { this.showsuccess = true } } }, methods: { updatestyle(style, oldcluster, newcluster) { let newstyle = style oldcluster.foreach((color, index) => { newstyle = newstyle.replace(new regexp(color, 'ig'), newcluster[index]) }) return newstyle }, getcssstring(url, callback, variable) { const xhr = new xmlhttprequest() xhr.onreadystatechange = () => { if (xhr.readystate === 4 && xhr.status === 200) { this[variable] = xhr.responsetext.replace(/@font-face{[^}]+}/, '') callback() } } xhr.open('get', url) xhr.send() }, getthemecluster(theme) { const tintcolor = (color, tint) => { let red = parseint(color.slice(0, 2), 16) let green = parseint(color.slice(2, 4), 16) let blue = parseint(color.slice(4, 6), 16) if (tint === 0) { // when primary color is in its rgb space return [red, green, blue].join(',') } else { red += math.round(tint * (255 - red)) green += math.round(tint * (255 - green)) blue += math.round(tint * (255 - blue)) red = red.tostring(16) green = green.tostring(16) blue = blue.tostring(16) return `#${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>
五、直接在组件中引用
六、换肤效果测试。(关闭浏览器再次打开依旧是你所选中的主题肤色)
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