plus-ui/src/components/Screenfull/index.vue

<template>
	<div>
		<svg-icon :icon-class="isFullscreen ? 'exit-fullscreen' : 'fullscreen'" @click="toggle" />
	</div>
</template>

<script setup lang="ts">
const { isFullscreen, toggle } = useFullscreen();
</script>

<style lang="scss" scoped>
.screenfull-svg {
  display: inline-block;
  cursor: pointer;
  fill: #5a5e66;
  width: 20px;
  height: 20px;
  vertical-align: 10px;
}
</style>