house

src/layout/components/TopBar/index.vue

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+<template>
+  <el-menu class="topbar-menu" :ellipsis="false" :default-active="activeMenu" :active-text-color="theme" mode="horizontal">
+    <sidebar-item :key="route.path + index" v-for="(route, index) in topMenus" :item="route" :base-path="route.path" />
+
+    <el-sub-menu index="more" class="el-sub-menu__hide-arrow" v-if="moreRoutes.length > 0">
+      <template #title>
+        <span>更多菜单</span>
+      </template>
+      <sidebar-item :key="route.path + index" v-for="(route, index) in moreRoutes" :item="route" :base-path="route.path" />
+    </el-sub-menu>
+  </el-menu>
+</template>
+
+<script setup>
+import SidebarItem from '../Sidebar/SidebarItem'
+import {useAppStore} from '@/store/modules/app'
+import {useSettingsStore} from '@/store/modules/settings'
+import {usePermissionStore} from '@/store/modules/permission'
+
+const route = useRoute()
+const appStore = useAppStore()
+const settingsStore = useSettingsStore()
+const permissionStore = usePermissionStore()
+
+const sidebarRouters = computed(() => permissionStore.sidebarRouters)
+const theme = computed(() => settingsStore.theme)
+const device = computed(() => appStore.device)
+const activeMenu = computed(() => {
+  const { meta, path } = route
+  if (meta.activeMenu) {
+    return meta.activeMenu
+  }
+  return path
+})
+
+const visibleNumber = ref(5)
+const topMenus = computed(() => {
+  return permissionStore.sidebarRouters.filter((f) => !f.hidden).slice(0, visibleNumber.value)
+})
+const moreRoutes = computed(() => {
+  return permissionStore.sidebarRouters.filter((f) => !f.hidden).slice(visibleNumber.value, sidebarRouters.value.length - visibleNumber.value)
+})
+function setVisibleNumber() {
+  let width = document.body.getBoundingClientRect().width
+  if (width >= 1000) {
+    width -= 500
+  }
+  visibleNumber.value = parseInt(width / 3 / 85)
+}
+
+onMounted(() => {
+  window.addEventListener('resize', setVisibleNumber)
+})
+onBeforeUnmount(() => {
+  window.removeEventListener('resize', setVisibleNumber)
+})
+
+onMounted(() => {
+  setVisibleNumber()
+})
+</script>
+
+<style lang="scss">
+
+/* menu item */
+#app .topbar-menu.el-menu--horizontal .el-sub-menu__title, #app .topbar-menu.el-menu--horizontal .el-menu-item {
+  padding: 0 10px !important;
+}
+
+.topbar-menu.el-menu--horizontal > .el-menu-item {
+  float: left;
+  height: 50px !important;
+  line-height: 50px !important;
+  color: #303133 !important;
+  padding: 0 5px !important;
+  margin: 0 10px !important;
+}
+
+.el-sub-menu.is-active .svg-icon, .el-menu-item.is-active .svg-icon + span, .el-sub-menu.is-active .svg-icon + span, .el-sub-menu.is-active .el-sub-menu__title span {
+  color: v-bind(theme);
+}
+
+/* sub-menu item */
+.topbar-menu.el-menu--horizontal > .el-sub-menu .el-sub-menu__title {
+  float: left;
+  line-height: 50px !important;
+  color: #303133 !important;
+  margin: 0 15px -3px!important;
+}
+
+/* topbar more arrow */
+.topbar-menu .el-sub-menu .el-sub-menu__icon-arrow {
+  position: static;
+  margin-left: 8px;
+  margin-top: 0px;
+  display: block !important;
+}
+
+/* menu__title el-menu-item */
+.topbar-menu.el-menu--horizontal .el-sub-menu__title, .topbar-menu.el-menu--horizontal .el-menu-item {
+  height: 60px;
+}
+</style>