vue-pdf 操作_@lanseria/vue-pdf-vite

<template>
  <div class="pdf">
    <div class="show">
      <pdf
        ref="pdf"
        :src="pdfUrl"
        :page="pageNum"
        :rotate="pageRotate"
        @password="password"
        @progress="loadedRatio = $event"
        @page-loaded="pageLoaded($event)"
        @num-pages="pageTotalNum = $event"
        @error="pdfError($event)"
        @link-clicked="page = $event"
      >
      </pdf>
    </div>

    <div class="pdf_footer">
      <div class="info">
        <div>当前页数/总页数：{{ pageNum }}/{{ pageTotalNum }}</div>
        <div>进度：{{ loadedRatio }}</div>
        <div>页面加载成功: {{ curPageNum }}</div>
      </div>
      <div class="operate">
        <div class="btn" @click.stop="clock">顺时针</div>
        <div class="btn" @click.stop="counterClock">逆时针</div>
        <div class="btn" @click.stop="prePage">上一页</div>
        <div class="btn" @click.stop="nextPage">下一页</div>
        <div class="btn" @click="scaleD">放大</div>
        <div class="btn" @click="scaleX">缩小</div>
        <div class="btn" @click="pdfPrint()">打印所有指定页</div>
        <div class="btn" @click="pdfPrintAll()">打印所有</div>
        <div class="btn" @click="logContent()">获取页面信息</div>
        <div class="btn" @click="fileDownload(pdfUrl, 'pdf文件')">下载</div>
      </div>
    </div>
  </div>
</template>

<script>
/* eslint-disable */
import pdf from 'vue-pdf'
import axios from 'axios'
export default {
  name: 'vue_pdf_preview',
  props: {
    // 当前pdf路径
    pdfUrl: {
      type: String,
      default: 'http://storage.xuetangx.com/public_assets/xuetangx/PDF/PlayerAPI_v1.0.6.pdf'
    }
  },
  components: {
    pdf
  },
  data() {
    return {
      // 总页数
      pageTotalNum: 1,
      // 当前页数
      pageNum: 1,
      // 加载进度
      loadedRatio: 0,
      // 页面加载完成
      curPageNum: 0,
      // 放大系数 默认百分百
      scale: 100,
      // 旋转角度 ‘90’的倍数才有效
      pageRotate: 0,
      // 单击内部链接时触发 (目前我没有遇到使用场景)
      page: 0
    }
  },
  watch: {},
  computed: {},
  created() {},
  mounted() {},
  methods: {
    //下载PDF
    fileDownload(data, fileName) {
      axios.get(data, { responseType: 'blob' }).then(res => {
        let blob = new Blob([res.data], {
          //type类型后端返回来的数据中会有，根据自己实际进行修改
          type: 'application/pdf;charset-UTF-8'
        })
        let filename = fileName || 'pdf.pdf'
        if (typeof window.navigator.msSaveBlob !== 'undefined') {
          window.navigator.msSaveBlob(blob, filename)
        } else {
          var blobURL = window.URL.createObjectURL(blob)
          // 创建隐藏<a>标签进行下载
          var tempLink = document.createElement('a')
          tempLink.style.display = 'none'
          tempLink.href = blobURL
          tempLink.setAttribute('download', filename)
          if (typeof tempLink.download === 'undefined') {
            tempLink.setAttribute('target', '_blank')
          }
          document.body.appendChild(tempLink)
          tempLink.click()
          document.body.removeChild(tempLink)
          window.URL.revokeObjectURL(blobURL)
        }
      })
    },

    //放大
    scaleD() {
      this.scale += 5
      this.$refs.pdf.$el.style.width = parseInt(this.scale) + '%'
    },

    //缩小
    scaleX() {
      // scale 是百分百展示 不建议缩放
      if (this.scale == 100) {
        return
      }
      this.scale += -5
      console.log(parseInt(this.scale) + '%')
      this.$refs.pdf.$el.style.width = parseInt(this.scale) + '%'
    },
    // 切换上一页
    prePage() {
      var p = this.pageNum
      p = p > 1 ? p - 1 : this.pageTotalNum
      this.pageNum = p
    },
    // 切换下一页
    nextPage() {
      var p = this.pageNum
      p = p < this.pageTotalNum ? p + 1 : 1
      this.pageNum = p
    },
    // 顺时针选中角度
    clock() {
      this.pageRotate += 90
    },
    // 逆时针旋转角度
    counterClock() {
      this.pageRotate -= 90
    },
    // pdf 有密码 则需要输入秘密
    password(updatePassword, reason) {
      updatePassword(prompt('password is "test"'))
      console.log('...reason...')
      console.log(reason)
      console.log('...reason...')
    },
    // 页面加载成功  当前页数
    pageLoaded(e) {
      this.$emit('current', e)
      this.curPageNum = e
    },
    // 异常监听
    pdfError(error) {
      console.error(error)
    },
    // 打印所有
    pdfPrintAll() {
      this.$refs.pdf.print()
    },
    // 打印 第一页和第二页
    pdfPrint() {
      // 第一个参数 文档打印的分辨率
      // 第二个参数 文档打印的页数
      this.$refs.pdf.print(100, [1, 2])
    },
    // 获取当前页面pdf的文字信息内容
    logContent() {
      this.$refs.pdf.pdf.forEachPage(function (page) {
        return page.getTextContent().then(function (content) {
          let text = content.items.map(item => item.str)
          let allStr = content.items.reduce((initVal, item) => (initVal += item.str), '')
          console.log(allStr) // 内容字符串
          console.log(text) // 内容数组
        })
      })
    }
  }
}
</script>

<style lang="scss" scoped>
.pdf {
  padding: 20px;
  .show {
    overflow: auto;
    margin: auto;
    max-width: 75%;
    height: 80vh;
    // max-height: 530px;
  }
  .pdf_footer {
    position: sticky;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 10px 0;
    background-color: rgba(255, 255, 255, 0.5);
    .info {
      display: flex;
      flex-wrap: wrap;
      div {
        width: 30%;
      }
    }
    .operate {
      margin: 10px 0 0;
      display: flex;
      flex-wrap: wrap;
      div {
        // width: 80px;
        text-align: center;
        font-size: 15px;
      }
      .btn {
        cursor: pointer;
        margin: 5px 10px;
        width: 120px;
        border-radius: 10px;
        padding: 5px;
        color: #fff;
        background-color: #3dcbbc;
      }
    }
  }
}
</style>
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效果图：