超详细！！！electron-vite-vue开发桌面应用之配置css预处理器sass（七）

CSS 预处理器是一种将预先定义的语法和功能添加到 CSS中的工具。它们允许开发人员使用变量、嵌套规则、混合、继承等功能，以更高效和可维护的方式编写样式表,其中常用的有sass/less/stylus,这里采用的sass方案

一、安装依赖

javascript 复制代码

npm install sass -D

二、模块化管理

1、创建初始化样式文件

src目录下静态资源文件夹assets新建styles文件夹

2、配置项目基础通用样式

variables.module.scss集成通用样式

javascript 复制代码

// base color
$blue: #324157;
$light-blue: #3A71A8;
$red: #C03639;
$pink: #E65D6E;
$green: #30B08F;
$tiffany: #4AB7BD;
$yellow: #FEC171;
$panGreen: #30B08F;

// 默认菜单主题风格
$base-menu-color: #bfcbd9;
$base-menu-color-active: #f4f4f5;
$base-menu-background: #304156;
$base-logo-title-color: #ffffff;

$base-menu-light-color: #606787;
$base-menu-light-background: #F2F6FB;
$base-logo-light-title-color: #fff;

$base-sub-menu-background: #1f2d3d;
$base-sub-menu-hover: #001528;

// 自定义暗色菜单风格
/**
$base-menu-color:hsla(0,0%,100%,.65);
$base-menu-color-active:#fff;
$base-menu-background:#001529;
$base-logo-title-color: #ffffff;

$base-menu-light-color:rgba(0,0,0,.70);
$base-menu-light-background:#ffffff;
$base-logo-light-title-color: #001529;

$base-sub-menu-background:#000c17;
$base-sub-menu-hover:#001528;
*/

$--color-primary: #4F6EF7;
$--color-success: #67C23A;
$--color-warning: #E6A23C;
$--color-danger: #F56C6C;
$--color-info: #909399;

$base-sidebar-width: 180px;
$base-navbar-height:60px;
// the :export directive is the magic sauce for webpack
// https://www.bluematador.com/blog/how-to-share-variables-between-js-and-sass
:export {
  menuColor: $base-menu-color;
  menuLightColor: $base-menu-light-color;
  menuColorActive: $base-menu-color-active;
  menuBackground: $base-menu-background;
  menuLightBackground: $base-menu-light-background;
  subMenuBackground: $base-sub-menu-background;
  subMenuHover: $base-sub-menu-hover;
  sideBarWidth: $base-sidebar-width;
  navBarHeight: $base-navbar-height;
  logoTitleColor: $base-logo-title-color;
  logoLightTitleColor: $base-logo-light-title-color;
  primaryColor: $--color-primary;
  successColor: $--color-success;
  dangerColor: $--color-danger;
  infoColor: $--color-info;
  warningColor: $--color-warning;
}

3、混合模式应用

mixin.scss集成混合样式

javascript 复制代码

@mixin colorBtn($color) {
  background: $color;

  &:hover {
    color: $color;

    &:before,
    &:after {
      background: $color;
    }
  }
}

.blue-btn {
  @include colorBtn($blue)
}

.light-blue-btn {
  @include colorBtn($light-blue)
}

.red-btn {
  @include colorBtn($red)
}

.pink-btn {
  @include colorBtn($pink)
}

.green-btn {
  @include colorBtn($green)
}

.tiffany-btn {
  @include colorBtn($tiffany)
}

.yellow-btn {
  @include colorBtn($yellow)
}
@mixin clearfix {
  &:after {
    content: "";
    display: table;
    clear: both;
  }
}

@mixin scrollBar {
  &::-webkit-scrollbar-track-piece {
    background: #d3dce6;
  }

  &::-webkit-scrollbar {
    width: 6px;
  }

  &::-webkit-scrollbar-thumb {
    background: #99a9bf;
    border-radius: 20px;
  }
}

@mixin relative {
  position: relative;
  width: 100%;
  height: 100%;
}

@mixin pct($pct) {
  width: #{$pct};
  position: relative;
  margin: 0 auto;
}

@mixin triangle($width, $height, $color, $direction) {
  $width: $width/2;
  $color-border-style: $height solid $color;
  $transparent-border-style: $width solid transparent;
  height: 0;
  width: 0;

  @if $direction==up {
    border-bottom: $color-border-style;
    border-left: $transparent-border-style;
    border-right: $transparent-border-style;
  }

  @else if $direction==right {
    border-left: $color-border-style;
    border-top: $transparent-border-style;
    border-bottom: $transparent-border-style;
  }

  @else if $direction==down {
    border-top: $color-border-style;
    border-left: $transparent-border-style;
    border-right: $transparent-border-style;
  }

  @else if $direction==left {
    border-right: $color-border-style;
    border-top: $transparent-border-style;
    border-bottom: $transparent-border-style;
  }
}

4、页面基本应用

javascript 复制代码

import variables from '@/assets/styles/variables.module.scss'

在页面template内联直接应用

javascript 复制代码

<el-menu
   :default-active="activeMenu"
   :collapse="isCollapse"
   :background-color="sideTheme === 'theme-dark' ? variables.menuBackground : variables.menuLightBackground"
   :text-color="sideTheme === 'theme-dark' ? variables.menuColor : variables.menuLightColor"
   :unique-opened="true"
   :active-text-color="theme"
   :collapse-transition="false"
   mode="vertical"
 >

在style中应用

javascript 复制代码

<style scoped lang="scss">
@import "@/assets/styles/mixin.scss";
@import "@/assets/styles/variables.module.scss";
.navbar {
  height: $base-navbar-height;
  overflow: hidden;
  position: relative;
}
//混合使用@include
.app-wrapper {
  @include clearfix;
}
//继承@extend
.button-basic  {
  border: none;
  padding: 15px 30px;
  text-align: center;
  font-size: 16px;
  cursor: pointer;
}

.button-report  {
  @extend .button-basic;
  background-color: red;
}
</style>