初始化项目，自 v1.7.1 版本开始

src/layout/components/Screenfull/index.ts

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+import Screenfull from './src/Screenfull.vue'
+
+export { Screenfull }

src/layout/components/Screenfull/src/Screenfull.vue

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+<script setup lang="ts">
+import { Icon } from '@/components/Icon'
+import { useFullscreen } from '@vueuse/core'
+import { propTypes } from '@/utils/propTypes'
+import { useDesign } from '@/hooks/web/useDesign'
+
+const { getPrefixCls } = useDesign()
+
+const prefixCls = getPrefixCls('screenfull')
+
+defineProps({
+  color: propTypes.string.def('')
+})
+
+const { toggle, isFullscreen } = useFullscreen()
+
+const toggleFullscreen = () => {
+  toggle()
+}
+</script>
+
+<template>
+  <div :class="prefixCls" @click="toggleFullscreen">
+    <Icon
+      :size="18"
+      :icon="isFullscreen ? 'zmdi:fullscreen-exit' : 'zmdi:fullscreen'"
+      :color="color"
+    />
+  </div>
+</template>