vue中使用pdfjs-dist + turnjs实现页面的翻书浏览功能
A黄俊辉A 人气:0pdfjs-dist 的工作原理:把获取到的 pbf 的文件的数据流, 利用 canvas转换成图片
turnjs 把多个元素做成翻书的特效
我接手了一个展示大屏的项目, 其中有一个地方,就是要以翻书的形式来预览 pdf文件
如图
首先 安装 psfjs-dist
npm install --save pdfjs-dist
turnjs 是jquery的项目, 所以, 我们要在vuejs中安装 jquery
vue中安装jquery的方法
npm install jquery --save
然后在 vue.config.js中配置
module.exports = { chainWebpack: config => { config.plugin('provide').use(webpack.ProvidePlugin, [{ $: 'jquery', jquery: 'jquery', jQuery: 'jquery', 'window.jQuery': 'jquery' }]) }
下载trunjs
http://www.turnjs.com/ 官网下载
我写这个笔记的时候, 官网好像下载出错了,我找到了另一种下载的方法
把官网的示例随便打开了个, 找到 上图中的地址
这样也可以得到我们想要的 trunjs库
上面是安装, 下面我们开始使用
<div class="body-content" style="height:850px;"> <v-touch @swipeleft="changeindexleft(1)" @swiperight="changeindexright(1)"> <div id="magazine1" style="height:850px;width:1200px;margin-left:0 !important;"> <!-- 这里的 magazine1 就是翻页组件的容器 --> </div> </v-touch> <!-- 这里的 docview1 是用来存放 pdf转成图片时,所用到的 canvas 标签的--> <div style="margin: 0 auto; text-align: center; display: none"> <div id="docView1" ref="docView1"></div> </div> </div>
代码部份
引入 jquery 和 turnjs
import $ from "jquery"; import * as PDFJS from "pdfjs-dist"; import turn from "../utils/lib/turn.js"
//初始化pdf插件 /* ** @param fileUrl pdf有效的查看地址 ** (1、线上地址(如:http://www.xxx.com) ** 2、本地public地址(例如:/static/view.pdf)) ** @param pdfPicturePath1 pdf转化的图片地址-用于放大查看所有pdf图片 */ readPdf(fileUrl,index) { //这个index 是我代码中要用的, 如果单独使用的话, 可以不要 index 这个参数 let self = this; let loadingTask1 = PDFJS.getDocument(fileUrl); //读取pdf文件 console.log(loadingTask1, '-----------loadingTask'); loadingTask1.promise .then(function (pdf) { if (pdf) { // pdf 总页数 const pageNum = pdf.numPages; for (let i = 1; i <= pageNum; i++) { // 生成每页 pdf 的 canvas const canvas = document.createElement('canvas'); canvas.id = 'page'+index+'Num' + i; canvas.className = 'h'+index; // 将 canvas 添加到 dom 中,docView(存放canvas的div) let docViewX = "docView"+index; console.log(docViewX); self.$refs[docViewX].append(canvas); //getContext() 方法返回一个用于在画布上绘图的环境。 const context = canvas.getContext('2d'); self.openPage(pdf, i, context); } setTimeout(() => { self.exportImg(self,index); }, 2000); } }) .catch(function (reason) { console.error('Error: ' + reason); }); }, //pdf转成canvas /* ** @param loading pdf生成图片时的加载状态 ** @param scale 控制 canvas显示的大小 */ openPage(pdfFile, pageNumber, context) { let that = this; pdfFile.getPage(pageNumber).then(function (page) { // reference canvas via context let viewport = page.getViewport({scale:1}); let scale =(847 / viewport.height).toFixed(2) //这里根把自已的项目需求,宽高进行调整 let viewport1 = page.getViewport({scale:scale}); let canvas = context.canvas; canvas.width = viewport1.width; canvas.height = viewport1.height; canvas.style.width = '100%'; canvas.style.height = '100%'; let renderContext = { canvasContext: context, viewport: viewport1 }; page.render(renderContext); that.loading = false; }); return; }, //canvas转成图片(可根据具体情况,进行图片转化显示)这里我把所有图片的base64存放在数组里面,方便放大查看,也可以直接把生成图片标签进行图片展示 // 转图片 exportImg(self,index) { //let canvaslist= document.querySelectorAll('canvas'); let canvaslist = document.getElementsByClassName("h"+index); let pdfPicturePathX = "pdfPicturePath"+index; this[pdfPicturePathX] = []; //这里把所有的图片地址放入到 pdfPicturePath1 数组中去 for (let i = 0; i < canvaslist.length; i++) { // let canvas = document.getElementById("pageNum" + (i + 1)); // // 将 canvas 转成 base64 格式的图片 // let base64ImgSrc = (canvas as any).toDataURL("image/png") // const img = document.createElement("img") // img.setAttribute('class', 'pdf-img'); // img.src = base64ImgSrc // img.style.width = '100%'; // // 将图片挂载到 dom 中 // (self.$refs as any).docView.append(img); let canvasNode = document.getElementById('page'+index+'Num' + (i + 1)); // 将 canvas 转成 base64 格式的图片 if(canvasNode){ this[pdfPicturePathX].push({page: i + 1, pic: canvasNode.toDataURL('image/png'), name: i + 1}) }else { continue; } //console.log('--------------aaa-------------', this.pdfPicturePath1); } //到上面就是把pdf文件转成 base64格式的图片, 之后把它们存在 pdfPicturePath1的数组中 this.$nextTick(()=>{ if(index == 1){ if($("#magazine1").children().length > 0){ $("#magazine1").turn("destroy"); $("#magazine1").children().remove(); } let magazine1 = $("#magazine1"); this[pdfPicturePathX].forEach(i=>{ magazine1.append("<img src='"+i.pic+"'/>") }); //setTimeout(()=>{ $("#magazine1").turn({ autoCenter: true, elevation: 50, acceleration: true, //direction:"rtl", // when: { // turned: function() { // //当前页 // // console.log("Current view: ", $(this).turn("view")); // // //总页数 // // console.log( // // "#magazine has " + $("#magazine").turn("pages") + " pages" // // ); // //$("#magazine").turn("hasPage", 10); // //$("#magazine").turn("pages", 1); // } // } }) $("#magazine1").turn("center"); $("#magazine1").turn("page"); //console.log($("#magazine1").turn("pages")); $("#magazine1").bind("start",function(e,p,c){ if(c == "tl"||c == 'tr'){ e.preventDefault(); } }) //},1000 } },
下面是我项目的一个完现代码
<template> <div id="index" ref="appRef"> <div class="bg"> <dv-loading v-show="loading">Loading...</dv-loading> <div v-show="!loading" class="host-body"> <!-- 第一行--> <div class="row1"> <div class="title-wrapper"> <img src="../assets/pic_rczs_title1.png"> <fullscreen ref="fullscreen" style="float:right"></fullscreen> </div> </div> <!-- 第二行 --> <div class="row2"> <div class="item_3"> <div class="picwrapper" v-show="showfengmian1"> <div class="initem" v-if="categoryslist[0]" @click="fengmianclick(1,0)"> <img :src="categoryslist[0].more.thumbnail"/> <div class="intitle">{{categoryslist[0].name}}</div> </div> <div class="initem" v-if="categoryslist[1]" @click="fengmianclick(1,1)"> <img :src="categoryslist[1].more.thumbnail"/> <div class="intitle">{{categoryslist[1].name}}</div> </div> </div> <div class="detailwrapper" v-show="!showfengmian1"> <div class="dtop"> <img src="../assets/pic_qyzc_shrcxzsy.png"/> </div> <div class="btmwrapper"> <div class="left"> <img src="../assets/icon_fanhui.png" @click="backtoshow(1)"/> </div> <div class="right"> <div class="content" v-show="!showpdf1"> <div class="listdetailwrapper"> <div class="listtop"> <multiselect v-model="value1" placeholder="请选择" open-direction="bottom" :show-labels="false" trackBy="id" label="name" @select="chooseSelect1" :options="selectoptions1"> </multiselect> </div> <div class="listwrapper"> <div @click="chooselist(1,index,item)" class="listitem" :class="selectItemIndex1 == index?'coloractive':''" v-for="(item,index) in selectList1" :key="item.id">{{item.name}}<span style="float: right" v-if="selectItemIndex1 == index"> 》</span></div> </div> </div> <div class="detail" :style="{height:ispdf1?'':'100%'}"> <div v-if="!ispdf1" class="markdown-body editor" v-html="articleDetail1.post_content"></div> <div class="img-wrapper" v-if="ispdf1" @click="pdfshowClick(1,articleDetail1.more.files)"> <img class="img1" src="../assets/pic_mrfm_wj@2x.png"/> </div> </div> </div> <div class="pdf-wrapper" v-show="showpdf1"> <div class="body-content" style="height:850px;"> <v-touch @swipeleft="changeindexleft(1)" @swiperight="changeindexright(1)"> <div id="magazine1" style="height:850px;width:1200px;margin-left:0 !important;"> <!-- <div v-for="(item, index) in pdfPicturePath1" :key="`test_${index}`">--> <!-- <div>--> <!-- <v-touch @swipeleft="changeindexleft(1)" @swiperight="changeindexright(1)">--> <!-- <img :src="item.pic" class="pdf_pic" />--> <!-- </v-touch>--> <!-- </div>--> <!-- </div>--> </div> </v-touch> <div style="margin: 0 auto; text-align: center; display: none"> <div id="docView1" ref="docView1"></div> </div> </div> </div> </div> </div> </div> </div> <div class="item_3"> <div class="picwrapper" v-show="showfengmian2"> <div class="initem" v-if="categoryslist[2]" @click="fengmianclick(2,2)"> <img :src="categoryslist[2].more.thumbnail"/> <div class="intitle">{{categoryslist[2].name}}</div> </div> <div class="initem" v-if="categoryslist[3]" @click="fengmianclick(2,3)"> <img :src="categoryslist[3].more.thumbnail"/> <div class="intitle">{{categoryslist[3].name}}</div> </div> </div> <div class="detailwrapper" v-show="!showfengmian2"> <div class="dtop"> <img src="../assets/pic_qyzc_shrcxzsy.png"/> </div> <div class="btmwrapper"> <div class="left"> <img src="../assets/icon_fanhui.png" @click="backtoshow(2)"/> </div> <div class="right"> <div class="content" v-show="!showpdf2"> <div class="listdetailwrapper"> <div class="listtop"> <multiselect v-model="value2" placeholder="请选择" open-direction="bottom" :show-labels="false" trackBy="id" label="name" @select="chooseSelect2" :options="selectoptions2"> </multiselect> </div> <div class="listwrapper"> <div @click="chooselist(2,index,item)" class="listitem" :class="selectItemIndex2 == index?'coloractive':''" v-for="(item,index) in selectList2" :key="item.id">{{item.name}}<span style="float: right" v-if="selectItemIndex2 == index"> 》</span></div> </div> </div> <div class="detail" :style="{height:ispdf2?'':'100%'}"> <div v-if="!ispdf2" class="markdown-body editor" v-html="articleDetail2.post_content"></div> <div class="img-wrapper" v-if="ispdf2" @click="pdfshowClick(2,articleDetail2.more.files)"> <img class="img1" src="../assets/pic_mrfm_wj@2x.png"/> </div> </div> </div> <div class="pdf-wrapper" v-show="showpdf2"> <div class="body-content" style="height:850px;"> <v-touch @swipeleft="changeindexleft(2)" @swiperight="changeindexright(2)"> <div id="magazine2" style="height:850px;width:1200px;margin-left:0 !important;"> <!-- <div v-for="(item, index) in pdfPicturePath2" :key="`test_${index}`">--> <!-- <div>--> <!-- <v-touch @swipeleft="changeindexleft(2)" @swiperight="changeindexright(2)">--> <!-- <img :src="item.pic" class="pdf_pic" />--> <!-- </v-touch>--> <!-- </div>--> <!-- </div>--> </div> </v-touch> <div style="margin: 0 auto; text-align: center; display: none"> <div id="docView2" ref="docView2"></div> </div> </div> </div> </div> </div> </div> </div> <div class="item_3"> <div class="picwrapper" v-show="showfengmian3"> <div class="initem" v-if="categoryslist[4]" @click="fengmianclick(3,4)"> <img :src="categoryslist[4].more.thumbnail"/> <div class="intitle">{{categoryslist[4].name}}</div> </div> <div class="initem" v-if="categoryslist[5]" @click="fengmianclick(3,5)"> <img :src="categoryslist[5].more.thumbnail"/> <div class="intitle">{{categoryslist[5].name}}</div> </div> </div> <div class="detailwrapper" v-show="!showfengmian3"> <div class="dtop"> <img src="../assets/pic_qyzc_shrcxzsy.png"/> </div> <div class="btmwrapper"> <div class="left"> <img src="../assets/icon_fanhui.png" @click="backtoshow(3)"/> </div> <div class="right"> <div class="content" v-show="!showpdf3"> <div class="listdetailwrapper"> <div class="listtop"> <multiselect v-model="value3" placeholder="请选择" open-direction="bottom" :show-labels="false" trackBy="id" label="name" @select="chooseSelect3" :options="selectoptions3"> </multiselect> </div> <div class="listwrapper"> <div @click="chooselist(3,index,item)" class="listitem" :class="selectItemIndex3 == index?'coloractive':''" v-for="(item,index) in selectList3" :key="item.id">{{item.name}}<span style="float: right" v-if="selectItemIndex3 == index"> 》</span></div> </div> </div> <div class="detail" :style="{height:ispdf3?'':'100%'}"> <div v-if="!ispdf3" class="markdown-body editor" v-html="articleDetail3.post_content"></div> <div class="img-wrapper" v-if="ispdf3" @click="pdfshowClick(3,articleDetail3.more.files)"> <img class="img1" src="../assets/pic_mrfm_wj@2x.png"/> </div> </div> </div> <div class="pdf-wrapper" v-show="showpdf3"> <div class="body-content" style="height:850px;"> <v-touch @swipeleft="changeindexleft(3)" @swiperight="changeindexright(3)"> <div id="magazine3" style="height:850px;width:1200px;margin-left:0 !important;"> <!-- <div v-for="(item, index) in pdfPicturePath3" :key="`test_${index}`">--> <!-- <div>--> <!-- <v-touch @swipeleft="changeindexleft(3)" @swiperight="changeindexright(3)">--> <!-- <img :src="item.pic" class="pdf_pic" />--> <!-- </v-touch>--> <!-- </div>--> <!-- </div>--> </div> </v-touch> <div style="margin: 0 auto; text-align: center; display: none"> <div id="docView3" ref="docView3"></div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </template> <script> import drawMixin from "../utils/drawMixin"; import "github-markdown-css/github-markdown.css" import fullscreen from "@/views/fullscreen"; import Multiselect from "vue-multiselect"; import $ from "jquery"; import * as PDFJS from "pdfjs-dist"; import turn from "../utils/lib/turn.min.js" import M from "../model/m"; export default { mixins: [ drawMixin ], data() { return { categoryslist:[], //首页的分类列表, 一共有六个分类 //下拉选择框 三个 selectoptions1:[ ], selectoptions2:[], selectoptions3:[], //下拉选择框的值 三个 value1:{}, value2:{}, value3:{}, //下拉选择后的列表 三个 selectList1:[], //列表中选中的标记, 主要是为了显示 条目中的小箭头 selectItemIndex1:-1, selectList2:[], selectItemIndex2:-2, selectList3:[], selectItemIndex3:-3, //标记pdf记号 ispdf1:false, ispdf2:false, ispdf3:false, //showpdf div的标记 showpdf1:false, showpdf2:false, showpdf3:false, showfengmian1:true, showfengmian2:true, showfengmian3:true, articleDetail1:{}, articleDetail2:{}, articleDetail3:{}, pdfPicturePath1: [], // pdf转化的图片地址 pdfPicturePath2: [], // pdf转化的图片地址 pdfPicturePath3: [], // pdf转化的图片地址 loading:true, } }, components: { fullscreen, Multiselect }, computed:{ }, mounted() { this.initData(); //this.timeFn() //this.readPdf("bbb.pdf") this.cancelLoading(); this.$refs.fullscreen.toggleFullScreen(); }, beforeDestroy () { }, methods: { chooseSelect1(selectoption){ this.getSelectList(selectoption,1); }, chooseSelect2(selectoption){ this.getSelectList(selectoption,2); }, chooseSelect3(selectoption){ this.getSelectList(selectoption,3); }, initData(){ //得到首页的图片列表 M.getCategorys().then(res=>{ this.categoryslist = res.data.categories; }) }, //封面被点击 fengmianclick(index,categoryslistindex){ console.log(index,categoryslistindex); //index 表示是哪一列中的(本屏一共有三列) //categoryslistindex 被点击的在 categoryslist中的index let showfengmianX = "showfengmian"+index; this[showfengmianX] = false; let thecategory = this.categoryslist[categoryslistindex]; M.getCategorys(thecategory.id).then(res=>{ let selectoptions = res.data.categories; let selectoptionsX = "selectoptions"+index; this[selectoptionsX] = selectoptions; let valueX = "value"+index; this[valueX] = selectoptions[0]; //这里要显示默认的项的信息 this.getSelectList(selectoptions[0],index); }) }, getSelectList(value,index){ //index表示第几列的 let params = { category_id:value.id } M.getselectLists(params).then(res=>{ console.log(res); let selectListX = "selectList"+index; let selectlist = res.data.map(i=>{ i.name=i.post_title; if(i.tag == 0){ i.type = "txt" }else if(i.tag == 1){ i.type = "pdf"; } return i; }); this[selectListX] = selectlist; let selectItemIndexX = "selectItemIndex"+index; this[selectItemIndexX] = 0; let theselectItem = selectlist[0]; this.getArticleDetail(theselectItem,index); }) }, //通过文章id来显示文章的详情 getArticleDetail(theselectItem,index){ //index 第几列 if(!theselectItem){ let articleDetailX = "articleDetail"+index; this[articleDetailX] = []; return; } let ispdfX = "ispdf"+index; let article_id = theselectItem.id; this[ispdfX] = theselectItem.type == "pdf"?true:false M.getArticleDetail(article_id).then(res=>{ let articleDetailX = "articleDetail"+index; this[articleDetailX] = res.data; if(theselectItem.type == "pdf"){ this.readPdf(res.data.more.files[0].url,index); //this.readPdf("bbb.pdf?"+Math.random(),index) } }) }, //回退 backtoshow(index){ //index 表示是哪一列中的(本屏一共有三列) let showpdfX = "showpdf"+index; //当 showpdfX == true是 一定是显示了pdf 的滑动页 if(this[showpdfX]){ this[showpdfX] = !this[showpdfX] }else{ //如果是showpdfX 是 false ,那就应该是退回上一级的页面 let showfengmianX = "showfengmian"+index; this[showfengmianX] = true; } }, pdfshowClick(index,files){ //index 表示是哪一列中的(本屏一共有三列) let showpdfX = "showpdf"+index; this[showpdfX] = true; //是在这里加载pdf ,还是在列表中点击的时候加载pdf 可以测试一下哪个要好一点 //this.readPdf("bbb.pdf",index) }, chooselist(index,listindex,item){ //第一个index 表示是哪一列中的(本屏一共有三列) //listindex 表示点击的是哪一条数据 let selectItemIndexX = "selectItemIndex"+index; this[selectItemIndexX] = listindex; let selectListX = "selectList"+index; //从selectListX中的数组中得到这条信息的具体内容,并标记是否是一个pdf文件 //看后台的设计,这里可能是要请求接口的 let ispdfX = "ispdf"+index; this[ispdfX] = this[selectListX][listindex].type == "pdf"?true:false this.getArticleDetail(item,index) }, //书翻页 changeindexleft(index){ this.$nextTick(()=>{ if(index == 1){ $("#magazine1").turn("next") }else if(index == 2){ $("#magazine2").turn("next") }else if(index == 3){ $("#magazine3").turn("next") } }) }, changeindexright(index){ this.$nextTick(()=>{ if(index == 1){ $("#magazine1").turn("previous") }else if(index == 2){ $("#magazine2").turn("previous") }else if(index == 3){ $("#magazine3").turn("previous") } }) }, //初始化pdf插件 /* ** @param fileUrl pdf有效的查看地址 ** (1、线上地址(如:http://www.xxx.com) ** 2、本地public地址(例如:/static/view.pdf)) ** @param pdfPicturePath1 pdf转化的图片地址-用于放大查看所有pdf图片 */ readPdf(fileUrl,index) { let self = this; if(index == 1){ let loadingTask1 = PDFJS.getDocument(fileUrl); //读取pdf文件 console.log(loadingTask1, '-----------loadingTask'); loadingTask1.promise .then(function (pdf) { if (pdf) { // pdf 总页数 const pageNum = pdf.numPages; for (let i = 1; i <= pageNum; i++) { // 生成每页 pdf 的 canvas const canvas = document.createElement('canvas'); canvas.id = 'page'+index+'Num' + i; canvas.className = 'h'+index; // 将 canvas 添加到 dom 中,docView(存放canvas的div) let docViewX = "docView"+index; console.log(docViewX); self.$refs[docViewX].append(canvas); //getContext() 方法返回一个用于在画布上绘图的环境。 const context = canvas.getContext('2d'); self.openPage(pdf, i, context); } setTimeout(() => { self.exportImg(self,index); }, 2000); } }) .catch(function (reason) { console.error('Error: ' + reason); }); } if(index == 2){ let loadingTask2 = PDFJS.getDocument(fileUrl); //读取pdf文件 console.log(loadingTask2, '-----------loadingTask'); loadingTask2.promise .then(function (pdf) { if (pdf) { // pdf 总页数 const pageNum = pdf.numPages; for (let i = 1; i <= pageNum; i++) { // 生成每页 pdf 的 canvas const canvas = document.createElement('canvas'); canvas.id = 'page'+index+'Num' + i; canvas.className = 'h'+index; // 将 canvas 添加到 dom 中,docView(存放canvas的div) let docViewX = "docView"+index; console.log(docViewX); self.$refs[docViewX].append(canvas); //getContext() 方法返回一个用于在画布上绘图的环境。 const context = canvas.getContext('2d'); self.openPage(pdf, i, context); } setTimeout(() => { self.exportImg(self,index); }, 2000); } }) .catch(function (reason) { console.error('Error: ' + reason); }); } if(index == 3){ let loadingTask3 = PDFJS.getDocument(fileUrl); //读取pdf文件 console.log(loadingTask3, '-----------loadingTask'); loadingTask3.promise .then(function (pdf) { if (pdf) { // pdf 总页数 const pageNum = pdf.numPages; for (let i = 1; i <= pageNum; i++) { // 生成每页 pdf 的 canvas const canvas = document.createElement('canvas'); canvas.id = 'page'+index+'Num' + i; canvas.className = 'h'+index; // 将 canvas 添加到 dom 中,docView(存放canvas的div) let docViewX = "docView"+index; console.log(docViewX); self.$refs[docViewX].append(canvas); //getContext() 方法返回一个用于在画布上绘图的环境。 const context = canvas.getContext('2d'); self.openPage(pdf, i, context); } setTimeout(() => { self.exportImg(self,index); }, 2000); } }) .catch(function (reason) { console.error('Error: ' + reason); }); } }, //pdf转成canvas /* ** @param loading pdf生成图片时的加载状态 ** @param scale 控制 canvas显示的大小 ** @param pdfPicturePath1 pdf转化的图片地址-用于放大查看所有pdf图片 */ openPage(pdfFile, pageNumber, context) { let that = this; pdfFile.getPage(pageNumber).then(function (page) { // reference canvas via context let viewport = page.getViewport({scale:1}); let scale =(847 / viewport.height).toFixed(2) let viewport1 = page.getViewport({scale:scale}); let canvas = context.canvas; canvas.width = viewport1.width; canvas.height = viewport1.height; canvas.style.width = '100%'; canvas.style.height = '100%'; let renderContext = { canvasContext: context, viewport: viewport1 }; page.render(renderContext); that.loading = false; }); return; }, //canvas转成图片(可根据具体情况,进行图片转化显示)这里我把所有图片的base64存放在数组里面,方便放大查看,也可以直接把生成图片标签进行图片展示 // 转图片 exportImg(self,index) { //let canvaslist= document.querySelectorAll('canvas'); let canvaslist = document.getElementsByClassName("h"+index); let pdfPicturePathX = "pdfPicturePath"+index; this[pdfPicturePathX] = []; //这里把所有的图片地址放入到 pdfPicturePath1 数组中去 for (let i = 0; i < canvaslist.length; i++) { // let canvas = document.getElementById("pageNum" + (i + 1)); // // 将 canvas 转成 base64 格式的图片 // let base64ImgSrc = (canvas as any).toDataURL("image/png") // const img = document.createElement("img") // img.setAttribute('class', 'pdf-img'); // img.src = base64ImgSrc // img.style.width = '100%'; // // 将图片挂载到 dom 中 // (self.$refs as any).docView.append(img); let canvasNode = document.getElementById('page'+index+'Num' + (i + 1)); // 将 canvas 转成 base64 格式的图片 if(canvasNode){ this[pdfPicturePathX].push({page: i + 1, pic: canvasNode.toDataURL('image/png'), name: i + 1}) }else { continue; } //console.log('--------------aaa-------------', this.pdfPicturePath1); } this.$nextTick(()=>{ if(index == 1){ if($("#magazine1").children().length > 0){ $("#magazine1").turn("destroy"); $("#magazine1").children().remove(); } let magazine1 = $("#magazine1"); this[pdfPicturePathX].forEach(i=>{ magazine1.append("<img src='"+i.pic+"'/>") }); //setTimeout(()=>{ $("#magazine1").turn({ autoCenter: true, elevation: 50, acceleration: true, //direction:"rtl", // when: { // turned: function() { // //当前页 // // console.log("Current view: ", $(this).turn("view")); // // //总页数 // // console.log( // // "#magazine has " + $("#magazine").turn("pages") + " pages" // // ); // //$("#magazine").turn("hasPage", 10); // //$("#magazine").turn("pages", 1); // } // } }) $("#magazine1").turn("center"); $("#magazine1").turn("page"); //console.log($("#magazine1").turn("pages")); $("#magazine1").bind("start",function(e,p,c){ if(c == "tl"||c == 'tr'){ e.preventDefault(); } }) //},1000) } if(index == 2){ if($("#magazine2").children().length > 0){ $("#magazine2").turn("destroy"); $("#magazine2").children().remove(); } let magazine2 = $("#magazine2"); this[pdfPicturePathX].forEach(i=>{ magazine2.append("<div><img src='"+i.pic+"'/></div>") }); $("#magazine2").turn("center"); $("#magazine2").turn("page"); $("#magazine2").turn({ autoCenter: true, acceleration: true, //direction:"rtl", when: { turned: function() { //当前页 // console.log("Current view: ", $(this).turn("view")); // //总页数 // console.log( // "#magazine has " + $("#magazine").turn("pages") + " pages" // ); //$("#magazine").turn("hasPage", 10); //$("#magazine").turn("pages", 1); } } }) $("#magazine2").bind("start",function(e,p,c){ if(c == "tl"||c == 'tr'){ e.preventDefault(); } }) } if(index == 3){ if($("#magazine3").children().length > 0){ $("#magazine3").turn("destroy"); $("#magazine3").children().remove(); } let magazine3 = $("#magazine3"); this[pdfPicturePathX].forEach(i=>{ magazine3.append("<div><img src='"+i.pic+"'/></div>") }); $("#magazine3").turn("center"); $("#magazine3").turn("page"); $("#magazine3").turn({ autoCenter: true, acceleration: true, //direction:"ltr", when: { turned: function() { //当前页 // console.log("Current view: ", $(this).turn("view")); // //总页数 // console.log( // "#magazine has " + $("#magazine").turn("pages") + " pages" // ); //$("#magazine").turn("hasPage", 10); //$("#magazine").turn("pages", 1); } } }) $("#magazine3").bind("start",function(e,p,c){ if(c == "tl"||c == 'tr'){ e.preventDefault(); } }) } }) }, cancelLoading() { setTimeout(() => { this.loading = false }, 500) } } } </script> <style src="vue-multiselect/dist/vue-multiselect.min.css"></style> <style lang="scss" scoped> @import '../assets/scss/index.scss'; .row1{ margin-top:109px; .title-wrapper{ position:relative; padding-left:177px; &::before{ position:absolute; left:100px; top:0; content:""; width:20px; height:226px; background:#00FBFF; } } } .row2{ width:100%; height:1584px; display:flex; flex-flow: row nowrap; justify-content: space-between; align-items: center; padding:0 10px; .item_3{ flex:1; width:100%; height:100%; display:flex; justify-content: center; align-items: center; .picwrapper{ width:100%; height:1183px; display:flex; justify-content: space-between; align-items: center; padding:0 50px; .initem{ width:978px; height:1183px; box-shadow: 0 0 10px 10px rgba(255,255,255,.4); border-radius: 20px; overflow: hidden; position: relative; img{ width:987px; height:1183px; border-radius: 20px; } .intitle{ position: absolute; font-size:130px; font-weight: bold; bottom:143px; text-align: center; width:100%; color:#fff; text-shadow:0px 0px 30px #023b92; letter-spacing: 10px; } } } .detailwrapper{ width:100%; height:1370px; padding:0 50px; .dtop{ overflow: hidden; img{ transform: translate(-2%,0); } } .btmwrapper{ display:flex; width:100%; height:947px; margin-top:20px; .left{ flex-basis: 144px; img{ position: relative; top:50%; transform: translate(0,-50%); width:100px; height:100px; } } .right{ flex:1; box-shadow: rgba(255,255,255,.9) 0 0 20px inset; padding:50px; box-sizing: border-box; display:flex; justify-content: space-between; .content{ width:100%; display:flex; justify-content: space-between; align-items: center; .listdetailwrapper{ width:885px; height:auto; .listtop{ width:769px; ::v-deep .multiselect--active{ .multiselect__select{ z-index: 100; } .multiselect__input{ color:#fff !important; } } ::v-deep .multiselect{ min-height:100px; font-size: 56px !important; .multiselect__select{ width: 100px; height: 100px; line-height: 76px; background: #FFDC24; border-radius: 50px; margin-top: 10px; &:before{ border-width: 25px 18px 0; } } .multiselect__tags{ min-height: 100px; font-size: 56px; line-height: 100px; background:#2B6CD2; .multiselect__input{ min-height:100px; line-height: 100px; font-size:56px; background:#2B6CD2; color:#fff !important; } .multiselect__single{ min-height:100px; line-height: 100px; font-size:56px; background:none; color:#fff; } } .multiselect__content-wrapper{ max-height: 700px !important; .multiselect__option{ min-height: 100px; line-height: 100px; } } } ::v-deep .multiselect__option--highlight{ background:#aaa; } } .listwrapper{ width:100%; height:720px; overflow-y:scroll; -webkit-overflow-scrolling : touch; &::-webkit-scrollbar { width: 0 !important } .coloractive{ color:#FFDC24 !important; } .listitem{ height:110px; font-size:56px; line-height: 110px; color:#fff; padding:0 20px; box-sizing: border-box; text-overflow: ellipsis; overflow: hidden; white-space: nowrap; width:95%; span{ font-size:30px; display: inline-block; height:110px; float:right; line-height: 110px; color:#FFDC24; margin-right:40px } &:hover{ background:rgba(255,255,255,0.3); color:#FFDC24 } } } } .detail{ flex:1; padding:20px; box-sizing: border-box; overflow-y: scroll; &::-webkit-scrollbar{ width:0; } .editor{ background:none; font-size:50px; color:#fff; } .img-wrapper{ width:500px; hieght:587px; margin:0 auto; background:url("../assets/pic_rczc_ym1.png") no-repeat center right; .img1{ width:441px; height:587px; } } } } .pdf-wrapper{ width:100%; display:flex; justify-content: center; align-items: center; .decit{ font-size:56px; z-index: 1000; } } } } } } } </style>
说一下这个项目, 这个项目中使用 turnjs 的时候
只能 倒翻书, 不能正翻书, direction:“rtl”, 只能rtl才生效, 如果是 ltr 就是出错,无效果
后来找到了另外一个解决办法 v-touch 就是解决的办法
首先 禁止掉 turnjs 的翻页效果
//这段代码就是禁止 turnjs 的翻书效果 $("#magazine1").bind("start",function(e,p,c){ if(c == "tl"||c == 'tr'){ e.preventDefault(); } })
然后, 使用 v-touch 监听 左右滑动
//书翻页 changeindexleft(index){ this.$nextTick(()=>{ if(index == 1){ $("#magazine1").turn("next") } }) }, changeindexright(index){ this.$nextTick(()=>{ if(index == 1){ $("#magazine1").turn("previous") } }) },
这样书就可以 前后翻动了 解决了 turnjs 只能 倒翻书的问题
还有一个问题, 就是 因为,本页面会加载不同的pdf 文件, 而 turnjs 初始化后 $(“#magazine1”).turn();会在 其中添加很多其它的标记, 如果在 $(“#margazine1”).turn()初始化完成之后 , 再执行一次 $(“#margazine1”).turn();就会形成无限的嵌套,导至显示出错。
最初我使用的是 vue 的数据改变来 更改 pdf 图片的显示, 就踩了上面的坑, 后来经过分析, 我在代码中使用了 jquery 的方法来改变数据
上面的代码中
以上便是我使用 vue pdf-dist 和turnjs做翻页的心得
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