printDialog.vue 1.81 KB
<template>
  <el-dialog
    title="打印"
    :visible.sync="visible"
    width="500px"
    append-to-body
    @close="$emit('update:showP', false)"
  >
    <el-button
      size="mini"
      type="primary"
      icon="el-icon-printer"
      @click="print"
      class="pull-right"
    >打印
    </el-button>

    <div ref="print" style="margin-top:40%">
      <div v-for="item in tableData">
        <div class="barcode">
          <el-row :gutter="10">
            <el-col>
              <barcode :value="item.code" width="1"  />
            </el-col>
            <el-col>
              <barcode :value="item.code" width="1"  />
            </el-col>
          </el-row>
        </div>
      </div>
    </div>
  </el-dialog>
</template>

<script>
  import html2canvas from 'html2canvas'
  import VueBarcode from 'vue-barcode';

  export default {
    name: 'printDialog',
    props: {
      tableData: {
        type: Array,
        defaults: []
      },
      showP: {
        type: Boolean,
        defaults: false
      }
    },
    components: {
      'barcode': VueBarcode
    },
    watch: {
      showP() {
        this.visible = this.showP
      }
    },
    data() {
      return {
        visible: this.showP
      }
    },
    methods: {
      print() {
        const timer = setTimeout(() => {
          html2canvas(this.$refs.print, {
            allowTaint: false,
            taintTest: true,
            useCORS: true,
            windowHeight: document.body.scrollHeight,
            background: '#fff'
          }).then(canvas => {
            const url = canvas.toDataURL('image/jpeg', 1.0)
            const myimg = document.createElement('img')
            myimg.src = url
            this.$print(myimg)
          })
        })
      }
    }
  }
</script>

<style scoped>
  .barcode {
    transform: rotate(90deg);
  }
</style>