改变element全局样式的颜色-使用theme-chalk工具

作者：weixin_40725706 | 2024-02-15 13:07:20

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theme-chalk

public/index.html

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="time" content="<%= htmlWebpackPlugin.options.createDate %>">
    <!-- 关闭dege浏览器自动识别电话 -->
    <meta name="format-detection" content="telephone=no">
    <meta name="viewport" content="width=device-width,initial-scale=1.0">
    <link rel="icon" href="<%= BASE_URL %>favicon.ico">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/element-ui@2.12.0/lib/theme-chalk/index.css">
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/kindeditor@4.1.10/themes/default/default.css">
    <title><%= htmlWebpackPlugin.options.title %></title>
    
    <script src="https://cdn.jsdelivr.net/npm/kindeditor@4.1.10/kindeditor-all.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/moment@2.29.1/moment.min.js"></script>
    <!-- <script src="https://daybrush.com/moveable/release/latest/dist/moveable.min.js"></script> -->
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/better-scroll@2.4.2/dist/better-scroll.min.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/vue@2.6.11/dist/vue.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/element-ui@2.12.0/lib/index.js"></script>
    <script src="https://cdn.jsdelivr.net/npm/benz-amr-recorder@1.1.3/BenzAMRRecorder.min.js"></script>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/echarts@4.9.0/dist/echarts.min.js" > </script>
    <script type="text/javascript" src="https://cdn.jsdelivr.net/npm/echarts@4.9.0/map/js/china.js"></script>
    <script type="text/javascript" charset="utf-8" src="https://g.alicdn.com/sd/ncpc/nc.js?t=2015052012"></script>
  </head>
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主要是这个

<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/element-ui@2.12.0/lib/theme-chalk/index.css">
组件
<my-color-picker /> 使用
内容

import { log } from 'util';
<template>
  <div class="">
    <el-color-picker @change="userChangeColor" class="user-color-picker" :predefine="predefineArr" v-model="theme"></el-color-picker>
  </div>
</template>

<script>
  const ORIGINAL_THEME = '#409EFF'
  export default {
    components: {
      
    },
    data () {
      return {
        chalk: '',
        theme: ORIGINAL_THEME,
        predefineArr: ['#409EFF', '#00629B', '#64CCC9', '#E4002B', '#000'],
        version: '2.12.0'
      }
    },
    created () {
      this.theme = localStorage.getItem('COLOR_THEME') ? localStorage.getItem('COLOR_THEME') : '#409EFF'
      const themeRefresh = this.getThemeCluster(this.theme.replace('#', ''))
      this.$store.dispatch('theme/setThemeColor', themeRefresh)
    },
    watch: {
      theme (val, oldVal) {
        if (typeof val !== 'string') return
        const themeCluster = this.getThemeCluster(val.replace('#', ''))
        const originalCluster = this.getThemeCluster(oldVal.replace('#', ''))
        // console.log(themeCluster)
        // console.log(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) {
          debugger
          const url = `https://unpkg.com/element-ui@${this.version}/lib/theme-chalk/index.css`
          this.getCSSString(url, chalkHandler, 'chalk')
        } else {
          debugger
          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.$emit('onThemeChange', val)
        this.$store.dispatch('theme/setThemeColor', themeCluster)

        if (this.showSuccess) {
          // this.$message({
          //   message: '换肤成功',
          //   type: 'success'
          // })
        } else {
          this.showSuccess = true
        }
      }
    },
    methods: {
      userChangeColor (color) {
        if (color) {
          this.theme = color
          return
        }
        this.theme = ORIGINAL_THEME
      },
      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) {
            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 lang="scss" scoped>
.user-color-picker {
  padding-top:3px;
  margin-right: 35px;
}
/deep/ .el-color-picker__trigger {
  // height: 25px !important;
  // width: 25px !important;
}
</style>

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暂时没有用到 – 可以替换主色调以及透明度
vuex

import Cookies from 'js-cookie'

const state = {
  witTheme: {
    $witPrimary: '#409EFF',
    $witOpacity1: '#53a8ff',
    $witOpacity2: '#66b1ff',
    $witOpacity3: '#79bbff',
    $witOpacity4: '#8cc5ff',
    $witOpacity5: '#a0cfff',
    $witOpacity6: '#b3d8ff',
    $witOpacity7: '#c6e2ff',
    $witOpacity8: '#d9ecff',
    $witOpacity9: '#ecf5ff',
  }
}

const mutations = {
  SET_THEME: (state, color) => {
    let colorArr = {
      $witPrimary: `#${color[0]}`,
      $witOpacity1: color[2],
      $witOpacity2: color[3],
      $witOpacity3: color[4],
      $witOpacity4: color[5],
      $witOpacity5: color[6],
      $witOpacity6: color[7],
      $witOpacity7: color[8],
      $witOpacity8: color[9],
      $witOpacity9: color[10]
    }
    state.theme = colorArr
    console.log(colorArr)
    localStorage.setItem('COLOR_WitTHEME', color)
  },
}

const actions = {
  setThemeColor({ commit, state }, color) {
    console.log('xxxxxxxxxxxxxxxx')
    console.log(color)
    commit('SET_THEME', color)
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}

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一些注意点

element-ui是cdn引入，vue也必须是cdn引入，而且vue的引入必须在element-ui之前，因为element-ui是基于vue书写的。

module.exports = {
  configureWebpack: {
     externals: {
       'vue': 'Vue',
        'element-ui': 'ELEMENT',   
     }
   }
}

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可以的大家点点关注-总结不易谢谢大家-也可以留言需要哪类的我也可以尝试

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