naive-ui/styles/Switch.scss

@import './mixins/mixins.scss';
@import './themes/vars.scss';

@include themes-mixin{
  @include b(switch) {
    @include once {
      user-select: none;
      display: inline-block;
    }
    @include e(rail) {
      @include once {
        cursor: pointer;
        position: relative;
        height: 14px;
        width: 30px;
        border-radius: 7px;
        margin: 3px;
        transition: background-color .2s $default-cubic-bezier;
        &::before, &::after {
          box-sizing: border-box;
          cursor: inherit;
          content: "";
          position: absolute;
          height: 20px;
          width: 24px;
          max-width: 20px;
          border-radius: 10px;
          top: -3px;
          left: -3px;
          // transition: left .2s $default-cubic-bezier, opacity .2s $default-cubic-bezier, max-width .2s $default-cubic-bezier;
        }
        &::before {
          opacity: 1;
        }
        &::after {
          opacity: 0;
        }
        @include not-m(disabled) {
          &:active::before, &:active::after {
            max-width: 24px;
          }
          @include m(active) {
            &:active::before, &:active::after {
              left: 9px;
            }
          }
        }
        @include m(active) {
          &::before {
            left: 13px;
            opacity: 1;
          }
          &::after {
            left: 13px;
            opacity: 1;
          }
        }
      }
      &::before {
        box-shadow: $--switch-switcher-box-shadow;
        transition: $--switch-switcher-transition;
      }
      &::after {
        transition: $--switch-switcher-transition;
      }
      background-color: map-get($map: $--switch-rail-background-color, $key: 'inactive');
      &::before {
        background-image: map-get($map: $--switch-switcher-color, $key: 'inactive');
      }
      &::after {
        background-image: map-get($map: $--switch-switcher-color, $key: 'active');
      }
      @include m(active) {
        background-color: map-get($map: $--switch-rail-background-color, $key: 'active');
      }
      @include m(disabled) {
        cursor: not-allowed;
        opacity: .5;
      }
    }
  }
}