| | |
| | | <!-- @format --> |
| | | <template> |
| | | <div class="imgbox"> |
| | | <img |
| | | ref="image" |
| | | :onLoad="initFun" |
| | | :onDragStart="dragStart" |
| | | :onWheel="handleScroll" |
| | | :src="currentPageSrc" |
| | | alt="" |
| | | /> |
| | | </div> |
| | | <el-dialog :visible.sync="localDialogVisible" @open="hadleOpenDialog" width="60vw" top="2vh" append-to-body |
| | | lock-scroll :show-close="false" class="custom-dialog"> |
| | | <div slot="title" class="header_title"> |
| | | <span>{{ pdfTitle }}</span> |
| | | <span @click="closeDialog"> x </span> |
| | | </div> |
| | | <div class="pdfModal" v-if="localDialogVisible"> |
| | | <!-- 原有的内容 --> |
| | | <div class="pdfBox-component"> |
| | | <div class="preview" v-if="this.preViewMd5"> |
| | | <div id="imageParent" class="imageBox"></div> |
| | | <div class="bottom_tool"></div> |
| | | </div> |
| | | <div class="notBox" v-if="totalPage == 0 && !loading"> |
| | | <el-empty description="暂无数据"></el-empty> |
| | | </div> |
| | | <div class="notBox" v-if="loading" v-loading="loading"></div> |
| | | </div> |
| | | </div> |
| | | </el-dialog> |
| | | </template> |
| | | <script> |
| | | import Viewer from "viewerjs"; |
| | | import "viewerjs/dist/viewer.css"; |
| | | import { getResourcePath } from "@/assets/methods/resources"; |
| | | export default { |
| | | name: "pdf_view", |
| | | props: { |
| | |
| | | title: { |
| | | type: String, |
| | | }, |
| | | isClear: { |
| | | type: Boolean, |
| | | default: false, |
| | | }, |
| | | pdfTitle: { |
| | | type: String, |
| | | }, |
| | | }, |
| | | data() { |
| | | return { |
| | | localDialogVisible: false, |
| | | currentPageSrc: "", |
| | | fileLoading: false, |
| | | visible: true, |
| | | close: null, |
| | | currentPage: 1, |
| | | currentPage: 3, |
| | | totalPage: 1, |
| | | rcViewerOptions: { |
| | | // inline: true |
| | | }, |
| | | zoom: 1, |
| | | catalogVisible: false, |
| | | tocData: [], |
| | | generateList: [], |
| | | expandedKeys: [], |
| | | searchValue: "", |
| | | autoExpandParent: true, |
| | | drawerSize: "default", |
| | | viewerCon: null, |
| | | preViewMd5: "", |
| | | loading: false, |
| | | }; |
| | | }, |
| | | watch: { |
| | | md5: { |
| | | handler(newVal, oldVal) { |
| | | if (newVal) { |
| | | this.getFileInfo(); |
| | | } |
| | | }, |
| | | }, |
| | | }, |
| | | created() { |
| | | this.getFileInfo(); |
| | | // md5: { |
| | | // immediate: true, |
| | | // handler(val) { |
| | | // if (val) { |
| | | // // this.preViewMd5 = val |
| | | // this.currentPage = 1 |
| | | // this.currentPageSrc = '' |
| | | // this.totalPage = 1 |
| | | // this.viewerCon?.destroy() |
| | | // } |
| | | // }, |
| | | // }, |
| | | // dialogVisibleProp(newVal) { |
| | | // this.localDialogVisible = newVal; |
| | | // if (newVal) { |
| | | // this.currentPage = 1; |
| | | // this.loading = true; |
| | | // this.clearDom(); |
| | | // this.getFileInfo(); |
| | | // this.$nextTick(() => { |
| | | // this.scrollBottom() |
| | | // }); |
| | | // } else { |
| | | // this.viewerCon?.destroy(); |
| | | // } |
| | | // }, |
| | | }, |
| | | methods: { |
| | | initFun() { |
| | | // 初始化拖拽 |
| | | let image = this.refs.image; |
| | | let imageBox = this.refs.imageBox; |
| | | let initLeft = imageBox.offsetWidth / 2 - image.offsetWidth / 2; |
| | | image.style.left = initLeft + "px"; |
| | | image.style.top = 0 + "px"; |
| | | let canMove = false; |
| | | let offsetX, offsetY, oldLeft, oldTop; |
| | | image.onmousedown = function (e) { |
| | | canMove = true; |
| | | offsetX = e.x; |
| | | offsetY = e.y; |
| | | oldLeft = parseFloat(image.style.left.split("px")[0]); |
| | | oldTop = parseFloat(image.style.top.split("px")[0]); |
| | | }; |
| | | imageBox.onmousemove = function (e) { |
| | | if (canMove == true) { |
| | | let left = e.clientX - offsetX; |
| | | let top = e.clientY - offsetY; |
| | | image.style.left = oldLeft + left + "px"; |
| | | image.style.top = oldTop + top + "px"; |
| | | } |
| | | }; |
| | | image.onmouseup = function () { |
| | | canMove = false; |
| | | }; |
| | | this.fileLoading = false; |
| | | hadleOpenDialog() { |
| | | this.preViewMd5 = this.md5; |
| | | this.currentPage = 3; |
| | | this.currentPageSrc = ""; |
| | | this.totalPage = 1; |
| | | this.viewerCon?.destroy(); |
| | | this.loading = true; |
| | | this.clearDom(); |
| | | this.getFileInfo(); |
| | | this.$nextTick(() => { |
| | | this.scrollBottom(); |
| | | }); |
| | | }, |
| | | dragStart(e) { |
| | | if (e && e.preventDefault) { |
| | | e.preventDefault(); |
| | | } else { |
| | | window.event.returnValue = false; |
| | | closeDialog() { |
| | | this.localDialogVisible = false; |
| | | }, |
| | | openDialog() { |
| | | this.localDialogVisible = true; |
| | | }, |
| | | async downloadPdf() { |
| | | console.log(await getResourcePath(this.preViewMd5), "12345"); |
| | | |
| | | window.open(await getResourcePath(this.preViewMd5)); |
| | | }, |
| | | domViewer() { |
| | | // let ele = (this.container ? this.container : document).getElementById( |
| | | // 'imageParent' |
| | | // ) |
| | | let ele = document.getElementById("imageParent"); |
| | | if (ele) { |
| | | this.viewerCon = new Viewer(ele, { |
| | | inline: false, |
| | | container: this.container |
| | | ? this.container.querySelector("#app") |
| | | : "body", |
| | | navbar: true, // 显示导航栏 |
| | | toolbar: true, // 显示工具栏 |
| | | title: true, // 显示标题 |
| | | }); |
| | | } |
| | | }, |
| | | handleScroll(e) { |
| | | if (e.nativeEvent.deltaY <= 0) { |
| | | if (this.zoom < 3) { |
| | | let newZoom = this.zoom + 0.1; |
| | | this.zoom = newZoom; |
| | | this.refs.image.style.height = newZoom * 100 + "%"; |
| | | } |
| | | } else { |
| | | if (this.zoom > 0.5) { |
| | | let newZoom = this.zoom - 0.1; |
| | | this.zoom = newZoom; |
| | | this.refs.image.style.height = newZoom * 100 + "%"; |
| | | } |
| | | clearDom() { |
| | | let ele = document.getElementById("imageParent"); |
| | | if (ele) { |
| | | ele.innerHTML = ""; |
| | | } |
| | | }, |
| | | createDom(page) { |
| | | var that = this; |
| | | let ele = document.getElementById("imageParent"); |
| | | const img = document.createElement("img"); |
| | | img.src = this.getPageImage(page); |
| | | // 手动触发滚动事件 |
| | | // ele.dispatchEvent(new Event("scroll")); |
| | | img.alt = ""; |
| | | img.style.maxWidth = "90%"; |
| | | img.style.padding = "30px 5%"; |
| | | img.className = "imgHover"; |
| | | img.onclick = () => { |
| | | that.viewerCon?.destroy(); |
| | | that.domViewer(); |
| | | }; |
| | | if (ele) { |
| | | ele.appendChild(img); |
| | | } |
| | | }, |
| | | |
| | | scrollBottom() { |
| | | const ele = document.getElementById("imageParent"); |
| | | if (ele) { |
| | | let lastScrollTop = 0; |
| | | ele.addEventListener("scroll", () => { |
| | | const scrollTop = ele.scrollTop; |
| | | const scrollBottom = ele.scrollHeight - scrollTop - ele.clientHeight; |
| | | if (scrollBottom < 10 && scrollTop > lastScrollTop) { |
| | | console.log( |
| | | "滚动到底部,当前页:", |
| | | this.currentPage, |
| | | "总页数:", |
| | | this.totalPage |
| | | ); |
| | | if (this.currentPage < this.totalPage) { |
| | | this.currentPage++; |
| | | if (this.currentPage <= this.totalPage) { |
| | | this.createDom(this.currentPage); |
| | | } |
| | | } |
| | | } |
| | | lastScrollTop = scrollTop; |
| | | }); |
| | | } |
| | | }, |
| | | |
| | | |
| | | getFileInfo() { |
| | | // 获取目录 |
| | | this.loading = true; |
| | | this.MG.file |
| | | .getPdfInfo({ md5: this.md5 }) |
| | | .getPdfInfo({ md5: this.preViewMd5 }) |
| | | .then((res) => { |
| | | this.totalPage = res.totalPages; |
| | | this.getPageImage(this.currentPage); |
| | | try { |
| | | if (typeof res === "string" && res !== null) { |
| | | this.totalPage = JSON.parse(res).totalPages; |
| | | } else if (typeof res === "object" && res !== null) { |
| | | this.totalPage = res.totalPages; |
| | | } |
| | | } catch (error) { |
| | | console.log(error, "pdf返回值类型错误"); |
| | | } |
| | | const maxPages = Math.min(3, this.totalPage); |
| | | for (let i = 0; i < maxPages; i++) { |
| | | this.createDom(i + 1); |
| | | } |
| | | this.loading = false; |
| | | }) |
| | | .catch((err) => { |
| | | this.totalPage = 0; |
| | | this.createDom(this.currentPage); |
| | | console.error(err); |
| | | this.loading = false; |
| | | }); |
| | | }, |
| | | |
| | | getPageImage(page) { |
| | | const ctx = process.env.VUE_APP_API_URL; |
| | | this.fileLoading = true; |
| | | this.currentPageSrc = |
| | | return ( |
| | | ctx + |
| | | "/file/GetPdfPageImage" + |
| | | "?md5=" + |
| | | this.md5 + |
| | | this.preViewMd5 + |
| | | "&index=" + |
| | | page + |
| | | "&dpi=150"; |
| | | "&dpi=200" |
| | | ); |
| | | }, |
| | | }, |
| | | }; |
| | | </script> |
| | | <style scoped lang="less"> |
| | | .imgbox { |
| | | width: 100%; |
| | | height: 100%; |
| | | background-color: aquamarine; |
| | | img { |
| | | width: 100%; |
| | | } |
| | | } |
| | | </style> |