scss主题颜色切换

注明:在vue项目中,越来越多的客户要求可以自定义主题的颜色,使用scss改主题颜色是一个不错的方法,那下面简单说下scss怎么实现主题切换。

一.简单版本

1.定义方法,循环遍历映射集合,生成对应样式表

@import "./_themes.scss";

//遍历主题map
@mixin themeify {
    @each $theme-name, $theme-map in $themes {
        //!global 把局部变量强升为全局变量
        $theme-map: $theme-map !global;
        //判断html的data-theme的属性值  #{}是sass的插值表达式
        //& sass嵌套里的父容器标识   @content是混合器插槽,像vue的slot
        [data-theme="#{$theme-name}"] & {
            @content;
        }
    }
}

//声明一个根据Key获取颜色的function
@function themed($key) {
    @return map-get($theme-map, $key);
}

//获取背景颜色
@mixin background_color($color) {
    @include themeify {
        background-color: themed($color)!important;
    }
}

//获取字体颜色
@mixin font_color($color) {
    @include themeify {
        color: themed($color)!important;
    }
}

//获取边框颜色
@mixin border_color($color) {
    @include themeify {
        border-color: themed($color)!important;
    }
}

2.定义颜色表

//当HTML的data-theme为dark时,样式引用dark
//data-theme为其他值时,就采用组件库的默认样式
//这里我只定义了两套主题方案,想要再多只需在`$themes`里加就行了
//注意一点是,每套配色方案里的key可以自定义但必须一致,不然就会混乱

$themes: (

    light: (
        //字体
        font_color1: #414141,
        font_color2: white,
        
        //背景
        background_color1: #fff,
        background_color2: #f0f2f5,
        background_color3: red,
        background_color4: #2674e7,
        
        //边框
        border_color1: #3d414a,
    
    ),
    
    dark: (
        //字体
        font_color1: white,
        font_color2: #414141,
        
        //背景
        background_color1: #1b2531,
        background_color2: #283142,
        background_color3: #1e6ceb,
        background_color4: #323e4e,
    
        //边框
        border_color1: #3d414a,
    
    )
);

3.使用动态绑定data-theme 并且定义class

<template>
  <div class="common-util" :data-theme="type">
    <span @click="theme('iview')">默认</span>
    <span @click="theme('light')">浅色</span>
    <span @click="theme('dark')">深色</span>
  </div>
</template>

<script>
export default {
  data() {
    return {
      type: "default",
    };
  },
  methods: {
    //换主题
    theme(type) {
      this.$store.commit("ACTIVE", type); //存在vuex
      this.type = this.$store.state.type;
      window.document.documentElement.setAttribute("data-theme", type);
    },
  },
};
</script>

<style lang="scss" scoped>
@import "../assets/scss/_handle.scss"; //必须引入
span {
  display: block;
  padding: 2%;
}
.common-util {
  font-size: 18px;
  @include font_color("font_color1");
  @include background_color("background_color1");
  @include border_color("border_color1");
}
</style>

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转载自blog.csdn.net/qq_47629187/article/details/129275130