vue-vben-admin/src/layouts/default/sider/DragBar.vue

<template>
  <div :class="getClass" :style="getDragBarStyle" />
</template>
<script lang="ts">
  import { defineComponent, computed, unref } from 'vue';

  import { useDesign } from '/@/hooks/web/useDesign';
  import { useMenuSetting } from '/@/hooks/setting/useMenuSetting';

  export default defineComponent({
    name: 'DargBar',
    props: {
      mobile: Boolean,
    },
    setup(props) {
      const { getMiniWidthNumber, getCollapsed, getCanDrag } = useMenuSetting();

      const { prefixCls } = useDesign('darg-bar');
      const getDragBarStyle = computed(() => {
        if (unref(getCollapsed)) {
          return { left: `${unref(getMiniWidthNumber)}px` };
        }
        return {};
      });

      const getClass = computed(() => {
        return [
          prefixCls,
          {
            [`${prefixCls}--hide`]: !unref(getCanDrag) || props.mobile,
          },
        ];
      });

      return {
        prefixCls,
        getDragBarStyle,
        getClass,
      };
    },
  });
</script>
<style lang="less" scoped>
  @import (reference) '../../../design/index.less';
  @prefix-cls: ~'@{namespace}-darg-bar';

  .@{prefix-cls} {
    position: absolute;
    top: 0;
    right: -2px;
    z-index: @side-drag-z-index;
    width: 2px;
    height: 100%;
    cursor: col-resize;
    border-top: none;
    border-bottom: none;

    &--hide {
      display: none;
    }

    &:hover {
      background: @primary-color;
      box-shadow: 0 0 4px 0 rgba(28, 36, 56, 0.15);
    }
  }
</style>