vue实现全屏

Vue 实现全屏功能

在 Vue 项目中实现全屏功能可以通过浏览器提供的 Fullscreen API 来完成。以下是几种常见的实现方式：

使用原生 Fullscreen API

通过调用 document.documentElement.requestFullscreen() 方法进入全屏，document.exitFullscreen() 退出全屏：

// 进入全屏
function enterFullscreen() {
  const element = document.documentElement;
  if (element.requestFullscreen) {
    element.requestFullscreen();
  } else if (element.webkitRequestFullscreen) {
    element.webkitRequestFullscreen();
  } else if (element.msRequestFullscreen) {
    element.msRequestFullscreen();
  }
}

// 退出全屏
function exitFullscreen() {
  if (document.exitFullscreen) {
    document.exitFullscreen();
  } else if (document.webkitExitFullscreen) {
    document.webkitExitFullscreen();
  } else if (document.msExitFullscreen) {
    document.msExitFullscreen();
  }
}

使用 Vue 封装全屏组件

可以封装一个可复用的全屏组件，方便在项目中多次调用：

<template>
  <button @click="toggleFullscreen">
    {{ isFullscreen ? '退出全屏' : '进入全屏' }}
  </button>
</template>

<script>
export default {
  data() {
    return {
      isFullscreen: false
    };
  },
  methods: {
    toggleFullscreen() {
      if (!this.isFullscreen) {
        this.enterFullscreen();
      } else {
        this.exitFullscreen();
      }
    },
    enterFullscreen() {
      const element = document.documentElement;
      if (element.requestFullscreen) {
        element.requestFullscreen();
      } else if (element.webkitRequestFullscreen) {
        element.webkitRequestFullscreen();
      } else if (element.msRequestFullscreen) {
        element.msRequestFullscreen();
      }
      this.isFullscreen = true;
    },
    exitFullscreen() {
      if (document.exitFullscreen) {
        document.exitFullscreen();
      } else if (document.webkitExitFullscreen) {
        document.webkitExitFullscreen();
      } else if (document.msExitFullscreen) {
        document.msExitFullscreen();
      }
      this.isFullscreen = false;
    }
  }
};
</script>

使用第三方库

如果不想手动处理浏览器兼容性问题，可以使用第三方库如 screenfull：

安装依赖：

npm install screenfull

在 Vue 组件中使用：

<template>
  <button @click="toggleFullscreen">
    {{ isFullscreen ? '退出全屏' : '进入全屏' }}
  </button>
</template>

<script>
import screenfull from 'screenfull';

export default {
  data() {
    return {
      isFullscreen: false
    };
  },
  methods: {
    toggleFullscreen() {
      if (screenfull.isEnabled) {
        screenfull.toggle();
        this.isFullscreen = !this.isFullscreen;
      }
    }
  }
};
</script>

监听全屏状态变化

可以通过事件监听全屏状态的变化：

mounted() {
  document.addEventListener('fullscreenchange', this.handleFullscreenChange);
  document.addEventListener('webkitfullscreenchange', this.handleFullscreenChange);
  document.addEventListener('msfullscreenchange', this.handleFullscreenChange);
},
beforeDestroy() {
  document.removeEventListener('fullscreenchange', this.handleFullscreenChange);
  document.removeEventListener('webkitfullscreenchange', this.handleFullscreenChange);
  document.removeEventListener('msfullscreenchange', this.handleFullscreenChange);
},
methods: {
  handleFullscreenChange() {
    this.isFullscreen = !!(
      document.fullscreenElement ||
      document.webkitFullscreenElement ||
      document.msFullscreenElement
    );
  }
}

以上方法可以根据项目需求选择适合的方式实现全屏功能。