vue-admin-template模板添加screenfull全屏插件

先安装screenfull：npm install screenfull@4.2.0 --save    （注意版本号）

一、在\src\components目录下创建Screenfull文件夹，创建index.vue文件，封装screenfull

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

<script>
import screenfull from 'screenfull'

export default {
  name: 'Screenfull',
  data() {
    return {
      isFullscreen: false
    }
  },
  mounted() {
    this.init()
  },
  beforeDestroy() {
    this.destroy()
  },
  methods: {
    click() {
      if (!screenfull.enabled) {
        this.$message({
          message: 'you browser can not work',
          type: 'warning'
        })
        return false
      }
      screenfull.toggle()
    },
    change() {
      this.isFullscreen = screenfull.isFullscreen
    },
    init() {
      if (screenfull.enabled) {
        screenfull.on('change', this.change)
      }
    },
    destroy() {
      if (screenfull.enabled) {
        screenfull.off('change', this.change)
      }
    }
  }
}
</script>

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

二、在src\layout\components\Navbar.vue中添加：

      <template v-if="device!=='mobile'">
        <screenfull id="screenfull" class="right-menu-item hover-effect" />
      </template>

import Screenfull from "@/components/Screenfull";　　　　// 添加部分

export default {
  components: {
    Breadcrumb,
    Hamburger,
    Screenfull　　　　// 添加部分
  },

  computed: {
    ...mapGetters(["sidebar", "avatar","device"])　　//添加device，用于判断设备
  },

三、导入svg文件

在src\icons\svg文件夹下，导入exit-fullscreen.svg和fullscreen.svg

exit-fullscreen.svg：

<svg width="128" height="128" xmlns="http://www.w3.org/2000/svg"><path d="M49.217 41.329l-.136-35.24c-.06-2.715-2.302-4.345-5.022-4.405h-3.65c-2.712-.06-4.866 2.303-4.806 5.016l.152 19.164-24.151-23.79a6.698 6.698 0 0 0-9.499 0 6.76 6.76 0 0 0 0 9.526l23.93 23.713-18.345.074c-2.712-.069-5.228 1.813-5.64 5.02v3.462c.069 2.721 2.31 4.97 5.022 5.03l35.028-.207c.052.005.087.025.133.025l2.457.054a4.626 4.626 0 0 0 3.436-1.38c.88-.874 1.205-2.096 1.169-3.462l-.262-2.465c0-.048.182-.081.182-.136h.002zm52.523 51.212l18.32-.073c2.713.06 5.224-1.609 5.64-4.815v-3.462c-.068-2.722-2.317-4.97-5.021-5.04l-34.58.21c-.053 0-.086-.021-.138-.021l-2.451-.06a4.64 4.64 0 0 0-3.445 1.381c-.885.868-1.201 2.094-1.174 3.46l.27 2.46c.005.06-.177.095-.177.141l.141 34.697c.069 2.713 2.31 4.338 5.022 4.397l3.45.006c2.705.062 4.867-2.31 4.8-5.026l-.153-18.752 24.151 23.946a6.69 6.69 0 0 0 9.494 0 6.747 6.747 0 0 0 0-9.523L101.74 92.54v.001zM48.125 80.662a4.636 4.636 0 0 0-3.437-1.382l-2.457.06c-.05 0-.082.022-.137.022l-35.025-.21c-2.712.07-4.957 2.318-5.022 5.04v3.462c.409 3.206 2.925 4.874 5.633 4.814l18.554.06-24.132 23.928c-2.62 2.626-2.62 6.89 0 9.524a6.694 6.694 0 0 0 9.496 0l24.155-23.79-.155 18.866c-.06 2.722 2.094 5.093 4.801 5.025h3.65c2.72-.069 4.962-1.685 5.022-4.406l.141-34.956c0-.05-.182-.082-.182-.136l.262-2.46c.03-1.366-.286-2.592-1.166-3.46h-.001zM80.08 47.397a4.62 4.62 0 0 0 3.443 1.374l2.45-.054c.055 0 .088-.02.143-.028l35.08.21c2.712-.062 4.953-2.312 5.021-5.033l.009-3.463c-.417-3.211-2.937-5.084-5.64-5.025l-18.615-.073 23.917-23.715c2.63-2.623 2.63-6.879.008-9.513a6.691 6.691 0 0 0-9.494 0L92.251 26.016l.155-19.312c.065-2.713-2.097-5.085-4.802-5.025h-3.45c-2.713.069-4.954 1.693-5.022 4.406l-.139 35.247c0 .054.18.088.18.136l-.267 2.465c-.028 1.366.288 2.588 1.174 3.463v.001z"/></svg>

fullscreen.svg：

<svg width="128" height="128" xmlns="http://www.w3.org/2000/svg"><path d="M38.47 52L52 38.462l-23.648-23.67L43.209 0H.035L0 43.137l14.757-14.865L38.47 52zm74.773 47.726L89.526 76 76 89.536l23.648 23.672L84.795 128h43.174L128 84.863l-14.757 14.863zM89.538 52l23.668-23.648L128 43.207V.038L84.866 0 99.73 14.76 76 38.472 89.538 52zM38.46 76L14.792 99.651 0 84.794v43.173l43.137.033-14.865-14.757L52 89.53 38.46 76z"/></svg>