578 lines
15 KiB
Vue
578 lines
15 KiB
Vue
<template>
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<!-- v-if="pdfUrl" -->
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<div class="pdf-viewer grid2" >
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<div style="position: relative;">
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<div class="pdf-bar">
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<div class="zoom-minus" @click="zoomIn">
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<i class="el-icon-minus" title="缩小"></i>
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</div>
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<div class="scale" >
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<el-input v-model.number="scale" size="mini" @keyup.enter.native="setScaleValue">
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<template slot="append">%</template>
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</el-input>
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</div>
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<div class="zoom-plus" @click="zoomOut">
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<i class="el-icon-plus" title="放大"></i>
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</div>
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<div class="prev" @click="prePage">
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上一页
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</div>
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<div class="page">
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<el-input-number
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v-model.number="currentPage"
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:min="0"
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:max="pageCount"
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size="mini"
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/>
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</div>
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<div class="page-count">/ {{ pageCount }}</div>
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<div class="next" @click="nextPage">
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下一页
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</div>
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<div class="tools">
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<div style="width:100%;text-align: right;">
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<!-- <el-button title="" type="primary" v-if="isA4" @click="showSinglePage(1)">切换单页</el-button> -->
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<!-- <el-button title="" type="primary" v-else @click="showA4Page(1)">切换A4</el-button> -->
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<el-button title="" type="primary" icon="el-icon-download" size="mini" style="padding: 5px 10px;" @click="downPDF">下载</el-button>
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<el-button title="" type="primary" icon="el-icon-printer" size="mini" style="padding: 5px 10px;" @click="printPDF">打印</el-button>
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</div>
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</div>
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</div>
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<div style="min-height:1600px;margin: 0 auto;overflow: auto;">
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<!-- <el-scrollbar>
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<div style="min-height:600px;margin: 0 auto;overflow: auto;"> -->
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<div class="pdf-wrapper">
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<pdf
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:src="currentPdfUrl"
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:page="page"
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@num-pages="thisPageCount = $event"
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@page-loaded="onPageLoaded($event)"
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ref="pdf"
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></pdf>
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</div>
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<!-- </div> -->
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<!-- </el-scrollbar> -->
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</div>
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</div>
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</div>
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</template>
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<script>
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import printJS from 'print-js'
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// npm i pdfjs-dist@2.5.207
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// npm i vue-pdf@4.2.0
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import pdf from 'xd-vue-pdf'
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import PdfUtils from '@/utils/pdfUtils.js';
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export default {
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components: { pdf },
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props: {
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pdfList:{
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type: Array,
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},
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startPage: {
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type: Number,
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default: 1
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},
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isLoadComplete:{
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type: Boolean,
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default: false
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}
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},
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data() {
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return {
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loading:false,
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resetCountKey:1,
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loadPdfUrl:null,
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// 单页模式
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cacheFileList:this.pdfList,
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isA4:false,
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page: 1,
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currentPage: 1,
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pageCount: this.pdfList.length,
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// A4 模式
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cacheA4FileList:[],
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thisPageCount:1,
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scale: 25,
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preScale: 25,
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pdfUtils:new PdfUtils(),
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loading: false,
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}
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},
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computed: {
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currentPdfUrl() {
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if (!this.loadPdfUrl) return ''
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const publicPath ='/static/'
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return pdf.createLoadingTask({
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url: this.loadPdfUrl,
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cMapUrl: `${publicPath}cmaps/`,
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cMapPacked: true
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})
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}
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},
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watch: {
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pdfList(){
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this.cacheFileList=this.pdfList;
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this.initA4List();
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this.showFirstFile();
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},
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thisPageCount(value) {
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if(this.isA4){
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this.doScale(75);
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}else{
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this.doScale(25);
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}
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},
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isLoadComplete(newVal,oldVal){
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if(this.isA4){
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this.showA4Page(1);
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}else{
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this.showSinglePage(1);
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}
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}
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},
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mounted() {
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this.initA4List();
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this.showFirstFile();
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window.addEventListener('mousewheel', this.handleScroll, { passive: false })
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},
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methods: {
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initA4List(){
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this.cacheA4FileList=[];
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const newList = Object.assign([], this.pdfList);
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if(newList&&newList.length>4){
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let spliteArr = (array = [], subGroupLength = 0) => {
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let index = 0;
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const newArray = [];
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while (index < array.length) {
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newArray.push(array.slice(index, index += subGroupLength));
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}
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return newArray;
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}
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const subPdfList=spliteArr(newList, 4);
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for (let i=0; i < subPdfList.length;i++){
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let fileItem={
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"billCode":"page-"+(i+1),
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"pdfUrl":null,
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"childreen":subPdfList[i]
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}
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this.cacheA4FileList.push(fileItem);
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}
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}else{
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let fileItem={
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"billCode":"page-"+1,
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"pdfUrl":null,
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"childreen":newList
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}
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this.cacheA4FileList.push(fileItem);
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}
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},
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showFirstFile(){
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if(this.isA4){
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this.scale=75;
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this.preScale=75;
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this.pageCount=this.cacheA4FileList.length;
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setTimeout( this.showA4Page(this.cacheA4FileList.length),3000);
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}else{
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this.scale=25;
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this.preScale=25;
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this.pageCount=this.cacheFileList.length;
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setTimeout( this.showSinglePage(1),2000);
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}
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this.resetCountKey++;
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},
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addPdfUrl(billCode,pdfUrl){
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let item={
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"billCode":billCode,
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"pdfUrl":pdfUrl
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}
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this.pdfList.push(item);
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},
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handleScroll(e){
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// 判断是不是按下ctrl键
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if(e.ctrlKey) {
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// 取消浏览器默认的放大缩小网页行为
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e.preventDefault()
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// 判断是向上滚动还是向下滚动
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if (e.deltaY > 0) {
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// 放大重写，业务代码
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this.zoomOut()
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} else {
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// 缩小重写，业务代码
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this.zoomIn()
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}
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}
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},
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onPageLoaded(currentPage){
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if(this.isA4){
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// this.page = 1;
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// this.doScale(75);
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}else{
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// this.currentPage=1;
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// this.page = 1;
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// this.doScale(20);
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}
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},
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doScale(val){
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if (isNaN(val)) {
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this.scale = this.preScale
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return
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}
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if (val< 10) {
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this.scale = 10
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}
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if (val > 200) {
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this.scale = 200
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}
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this.preScale = this.scale
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this.$refs.pdf.$el.style.width = parseInt(this.scale) + '%';
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this.$refs.pdf.$el.style.margin = "0 auto";
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},
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setScaleValue(e) {
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this.doScale(e.target.value)
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},
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zoomIn() {
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if (this.scale > 20) {
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this.scale += -5
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this.doScale(this.scale );
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}
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},
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zoomOut() {
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if (this.scale < 200) {
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this.scale += 5
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this.doScale(this.scale );
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}
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},
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prePage() {
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if(!this.isA4){
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let fileNo = this.currentPage - 1
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if (fileNo < 1) return
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this.currentPage = fileNo
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this.showSinglePage(this.currentPage)
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}
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else{
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let fileNo = this.currentPage - 1
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if (fileNo < 1) return
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this.currentPage = fileNo
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this.showA4Page(this.currentPage)
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}
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},
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nextPage() {
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if(!this.isA4){
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let fileNo = this.currentPage + 1
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if (fileNo > this.pageCount) return
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this.currentPage = fileNo
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this.showSinglePage(this.currentPage)
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}
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else{
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let fileNo = this.currentPage + 1
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if (fileNo > this.pageCount) return
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this.currentPage = fileNo
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this.showA4Page(this.currentPage)
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}
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},
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// 下载
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downPDF() {
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// 下载所有预览的PDF文件
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if(this.isA4){
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if(this.cacheA4FileList&&this.cacheA4FileList.length>0){
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this.cacheA4FileList.forEach(async item=>{
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if(!item.pdfUrl){
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let thisSubList=item.childreen;
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let needGenList=[];
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for(let j=0;j<thisSubList.length;j++){
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needGenList.push(thisSubList[j].pdfBase64)
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}
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item.pdfUrl=await this.pdfUtils.mergePdfToA4(needGenList);
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this.downPdfFile(item.pdfUrl);
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}else{
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this.downPdfFile(item.pdfUrl);
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}
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});
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}
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}else{
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if(this.cacheFileList&&this.cacheFileList.length>0){
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// this.cacheFileList.forEach( item=>{
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// if(!item.pdfUrl){
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// item.pdfUrl = this.pdfUtils.getBlobUrl(item.pdfBase64);
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// }
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// this.downPdfFile(item.billCode,item.pdfUrl);
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// });
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this.$prompt('请输入保存文件名', "提示", {
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confirmButtonText: "确定",
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cancelButtonText: "取消",
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closeOnClickModal: false,
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inputValidator (value) {
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if (value) {
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return true;
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}else{
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return false;
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}
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},
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inputErrorMessage: "文件名不能为空"
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}).then(async ({ value }) => {
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let fileName=value+".pdf";
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let needGenList=[];
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for(let j=0;j<this.cacheFileList.length;j++){
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needGenList.push(this.cacheFileList[j].pdfBase64)
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}
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this.pdfUtils.mergePdf3(needGenList,fileName,true);
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}).catch(() => {});
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}
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}
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},
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downPdfFile(pdfUrl){
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this.$prompt('请输入保存文件名', "提示", {
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confirmButtonText: "确定",
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cancelButtonText: "取消",
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closeOnClickModal: false,
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inputValidator (value) {
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if (value) {
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return true;
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}else{
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return false;
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}
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},
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inputErrorMessage: "文件名不能为空"
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}).then(async ({ value }) => {
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let fileName=value+".pdf";
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var tempLink = document.createElement('a')
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tempLink.style.display = 'none'
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tempLink.href = pdfUrl
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tempLink.setAttribute('download', fileName+'.pdf')
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if (typeof tempLink.download === 'undefined') {
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tempLink.setAttribute('target', '_blank')
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}
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document.body.appendChild(tempLink)
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tempLink.click()
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document.body.removeChild(tempLink)
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}).catch(() => {});
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},
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// 打印
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printPDF() {
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if(this.isA4){
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printJS(this.loadPdfUrl);
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}else{
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this.$emit("onPrint");
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}
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},
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showSinglePage(page){
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this.isA4 = false;
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if(!page || Object.is(page, NaN)){
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page=1;
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}
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this.pageCount=this.cacheFileList.length;
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const thisPage=this.cacheFileList[page-1];
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const pdfBase64 = thisPage.pdfBase64;
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this.loadPdfUrl = this.pdfUtils.getBlobUrl(pdfBase64);
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this.doScale(20);
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this.resetCountKey++;
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},
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async showA4Page(page){
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this.isA4 = true
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if(!page || Object.is(page, NaN)){
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page=1;
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}
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if(!this.cacheA4FileList || this.cacheA4FileList.length==0){
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return;
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}
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const loadingInstance = this.$loading({
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text: '正在生成A4预览...'
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})
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this.pageCount=this.cacheA4FileList.length;
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// 分页生成文件,只渲染第一页
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let thisSubList=this.cacheA4FileList[page-1].childreen;
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let needGenList=[];
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for(let j=0;j<thisSubList.length;j++){
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needGenList.push(thisSubList[j].pdfBase64)
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}
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let pdfUrl=await this.pdfUtils.mergePdfToA4(needGenList);
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if(pdfUrl){
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loadingInstance.close();
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this.cacheA4FileList[page-1].pdfUrl=pdfUrl;
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this.loadPdfUrl=this.cacheA4FileList[page-1].pdfUrl;
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}
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this.resetCountKey++;
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},
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}
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}
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</script>
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<style lang="scss" scoped>
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.grid1 {
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height: 200px;
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background-image:
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linear-gradient(45deg, #8d8b8b 25%, transparent 0),
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linear-gradient(-45deg, #8d8b8b 25%, transparent 0),
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linear-gradient(45deg, transparent 75%, #8d8b8b 0),
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linear-gradient(-45deg, transparent 75%, #8d8b8b 0);
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background-position: 0 0, 0 10px, 10px -10px, -10px 0;
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background-size: 20px 20px;
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}
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.grid2 {
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height: 200px;
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// background-image: radial-gradient(circle, rgb(165, 165, 165) 1px, #fff 1px);
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background-image: radial-gradient(circle, #4a4a4a 1px, #3f3f3f 1px);
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background-size: 15px 15px;
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background-position: center center;
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}
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.grid3 {
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height: 200px;
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background-image:
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linear-gradient(to right, rgb(203 213 225) 1px, transparent 1px),
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linear-gradient(to bottom, rgb(203 213 225) 1px, transparent 1px);
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background-size: 20px 20px;
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background-position: center center;
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}
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.grid4 {
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background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='40' height='40'%3E%3Crect width='40' height='40' fill='%23fff' /%3E%3Crect x='50%' width='1' height='100%' fill='rgb(203 213 225)' /%3E%3Crect y='50%' width='100%' height='1' fill='rgb(203 213 225)' /%3E%3C/svg%3E%0A");
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}
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.showA4 {
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position: absolute;
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left: 100%;
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width: 1920px;
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overflow: visible;
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}
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.pdf-viewer {
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position: relative;
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width: 100%;
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height: 100%;
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// overflow: hidden;
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overflow: auto;
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// height: 100%;
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font-family: PingFang SC;
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// width: 100%;
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// position: relative;
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// background: #eeeeee;
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// background: #dcdcdc;
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.tools {
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display: flex;
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z-index: 9999;
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position: absolute;
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top: 0px;
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right: 30px;
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}
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.pdf-bar {
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position: absolute;
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// position: fixed;
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top: 0px;
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left: 0px;
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z-index: 1;
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width: 100%;
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height: 36px;
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border: 1px solid #ddd;
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box-sizing: border-box;
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text-align: center;
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background: #f8f8f8;
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display: flex;
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justify-content: center;
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align-items: center;
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& > div {
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min-width: 36px;
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height: 36px;
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line-height: 36px;
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color: #666;
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cursor: pointer;
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i {
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width: 100%;
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height: 100%;
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color: #666;
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font-weight: bold;
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}
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:deep .el-input--mini {
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input {
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padding: 0 8px;
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width: 50px;
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text-align: center;
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}
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.el-input-group__append {
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padding: 0 6px;
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color: #666;
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cursor: auto;
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}
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}
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:deep .el-input-number {
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margin-left: 10px;
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width: 40px;
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.el-input-number__decrease {
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display: none;
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}
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.el-input-number__increase {
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display: none;
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}
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.el-input--mini {
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input {
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width: 40px;
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text-align: center;
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}
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}
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}
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}
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.prev {
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margin-left: 16px;
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}
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.scale,
|
|
.page {
|
|
display: flex;
|
|
align-items: center;
|
|
}
|
|
.page-count {
|
|
margin-right: 10px;
|
|
}
|
|
}
|
|
.pdf-wrapper {
|
|
position: absolute;
|
|
margin-top: 70px;
|
|
width: 100%;
|
|
height: calc(100% - 70px);
|
|
overflow: auto;
|
|
}
|
|
}
|
|
</style>
|