From a954bafb1bb4a70b2baf768230f2c50fd5c7163c Mon Sep 17 00:00:00 2001
From: YM <479443481@qq.com>
Date: 星期四, 13 六月 2024 14:20:53 +0800
Subject: [PATCH] Merge branch 'master' of http://182.92.203.7:2001/r/testbookLayout

---
 src/components/pdfview/index.vue |  296 ++++++++++++++++++++++++++++------------------------------
 1 files changed, 144 insertions(+), 152 deletions(-)

diff --git a/src/components/pdfview/index.vue b/src/components/pdfview/index.vue
index 04edf5e..4e64d88 100644
--- a/src/components/pdfview/index.vue
+++ b/src/components/pdfview/index.vue
@@ -1,16 +1,31 @@
 <template>
-  <div class="imgbox">
-    <img
-      ref="image"
-      :onLoad="initFun"
-      :onDragStart="dragStart"
-      :onWheel="handleScroll"
-      :src="currentPageSrc"
-      alt=""
-    />
+  <div class="preview" v-if="this.preViewMd5">
+    <div id="imageParent" class="imageBox"></div>
+    <div class="bottom_tool">
+      <svg
+        @click="downloadPdf"
+        t="1718251204993"
+        class="icon"
+        viewBox="0 0 1024 1024"
+        version="1.1"
+        xmlns="http://www.w3.org/2000/svg"
+        p-id="4418"
+        xmlns:xlink="http://www.w3.org/1999/xlink"
+        width="25"
+        height="25"
+      >
+        <path
+          d="M557 564.974l153.188-181.04c16.054-18.972 44.448-21.34 63.42-5.286 18.972 16.054 21.338 44.448 5.284 63.42L550.56 711.92a44.982 44.982 0 0 1-8.95 10.254 44.872 44.872 0 0 1-15.082 8.432A44.944 44.944 0 0 1 512 733c-16.264 0-30.512-8.628-38.42-21.556L245.65 442.068c-16.052-18.972-13.686-47.366 5.286-63.42 18.972-16.052 47.366-13.686 63.42 5.286l152.646 180.4V157c0-24.852 20.148-45 45-45s45 20.148 45 45v407.974zM823 630c0-24.852 20.148-45 45-45s45 20.148 45 45v238c0 24.87-20.176 45.026-45.046 45l-710-0.726c-24.834-0.026-44.954-20.166-44.954-45V630c0-24.852 20.148-45 45-45s45 20.148 45 45v192.32l620 0.634V630z"
+          p-id="4419"
+        ></path>
+      </svg>
+    </div>
   </div>
 </template>
 <script>
+import Viewer from "viewerjs";
+import "viewerjs/dist/viewer.css";
+import { getResourcePath } from "@/assets/methods/resources";
 export default {
   name: "pdf_view",
   props: {
@@ -20,186 +35,163 @@
     title: {
       type: String,
     },
+    isClear: {
+      type: Boolean,
+      default: false,
+    },
   },
   data() {
     return {
       currentPageSrc: "",
-      fileLoading: false,
-      visible: true,
-      close: null,
       currentPage: 1,
       totalPage: 1,
-      rcViewerOptions: {
-        // inline: true
-      },
-      zoom: 1,
-      catalogVisible: false,
-      tocData: [],
-      generateList: [],
-      expandedKeys: [],
-      searchValue: "",
-      autoExpandParent: true,
-      drawerSize: "default",
+      viewerCon: null,
+      preViewMd5: "",
     };
   },
   watch: {
+    isClear: {
+      immediate: true,
+      handler(val) {
+        if (val == true) this.preViewMd5 = "";
+      },
+    },
     md5: {
-      handler(newVal, oldVal) {
-        if (newVal) {
-          this.getFileInfo();
+      immediate: true,
+      handler(val) {
+        if (val) {
+          this.preViewMd5 = val;
+          this.currentPage = 1;
+          this.currentPageSrc = "";
+          this.totalPage = 1;
+          this.viewerCon?.destroy();
         }
       },
     },
   },
-  created(){
+  mounted() {
+    this.scrollBottom();
+    this.clearDom();
     this.getFileInfo();
   },
   methods: {
-    initFun() {
-      // 鍒濆鍖栨嫋鎷�
-      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;
+    async downloadPdf() {
+      window.open(await getResourcePath(this.preViewMd5));
     },
-    dragStart(e) {
-      if (e && e.preventDefault) {
-        e.preventDefault();
-      } else {
-        window.event.returnValue = false;
-      }
+    domViewer() {
+      let ele = (this.container ? this.container : document).getElementById(
+        "imageParent"
+      );
+      this.viewerCon = new Viewer(ele, {
+        inline: false,
+        container: this.container
+          ? this.container.querySelector("#app")
+          : "body",
+        navbar: true, // 鏄剧ず瀵艰埅鏍�
+        toolbar: true, // 鏄剧ず宸ュ叿鏍�
+        title: true, // 鏄剧ず鏍囬
+      });
     },
-    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 + "%";
+    clearDom() {
+      let ele = (this.container ? this.container : document).getElementById(
+        "imageParent"
+      );
+      ele.innerHtml = "";
+    },
+    createDom(page) {
+      var that = this;
+      let ele = (this.container ? this.container : document).getElementById(
+        "imageParent"
+      );
+      const img = document.createElement("img");
+      img.src = this.getPageImage(page);
+      img.alt = "";
+      img.style.maxWidth = "90%";
+      img.style.padding = "30px 5%";
+      img.className = "imgHover";
+      img.onclick = () => {
+        that.viewerCon?.destroy();
+        that.domViewer();
+      };
+      ele.appendChild(img);
+    },
+    scrollBottom() {
+      var that = this;
+      var ele = (this.container ? this.container : document).getElementById(
+        "imageParent"
+      );
+      ele.addEventListener("scroll", function () {
+        // 璁$畻婊氬姩鏉¤窛绂诲簳閮ㄧ殑浣嶇疆
+        const scrollBottom =
+          ele.scrollHeight - ele.scrollTop - ele.clientHeight;
+        if (scrollBottom <= 10) {
+          that.currentPage++;
+          if (that.currentPage <= that.totalPage) {
+            that.createDom(that.currentPage, ele);
+          }
         }
-      } else {
-        if (this.zoom > 0.5) {
-          let newZoom = this.zoom - 0.1;
-          this.zoom = newZoom;
-          this.refs.image.style.height = newZoom * 100 + "%";
-        }
-      }
+      });
     },
     getFileInfo() {
       // 鑾峰彇鐩綍
-      // this.MG.file
-      //   .GetPdfToc({ md5: this.md5 })
-      //   .then((tocRes) => {
-      //     console.log(tocRes, "3232---3232----32");
-      //     if (tocRes && tocRes.length && tocRes[0]) {
-      //       let tocDataList = [];
-      //       for (let i = 0; i < tocRes.length; i++) {
-      //         const tacItem = tocRes[i];
-      //         if (tacItem) {
-      //           let itemInfo = tacItem.split(" ");
-      //           let obj = {
-      //             page: itemInfo[0],
-      //             level: itemInfo[1],
-      //             title: itemInfo[2] + " ( " + itemInfo[0] + " )",
-      //             children: [],
-      //           };
-      //           tocDataList.push(obj);
-      //         }
-      //       }
-      //       let cLevel = 0;
-      //       let tocData = [];
-      //       let generateList = []; // 鐢ㄤ簬妫�绱㈢殑Data
-      //       let memorySrc = null;
-      //       for (let j = 0; j < tocDataList.length; j++) {
-      //         const tocItem = tocDataList[j];
-      //         if (tocItem.level == 0) {
-      //           tocItem.key = tocData.length;
-      //           tocData.push(tocItem);
-      //           generateList.push(tocItem);
-      //           cLevel = 0;
-      //         } else if (tocItem.level == cLevel) {
-      //           tocItem.key = memorySrc.key + "-" + memorySrc.children.length;
-      //           memorySrc.children.push(tocItem);
-      //           generateList.push(tocItem);
-      //         } else if (tocItem.level > cLevel) {
-      //           memorySrc = this.handleDocData(tocData, cLevel);
-      //           tocItem.key = memorySrc.key + "-" + memorySrc.children.length;
-      //           memorySrc.children.push(tocItem);
-      //           generateList.push(tocItem);
-      //           cLevel = tocItem.level;
-      //         } else if (tocItem.level < cLevel) {
-      //           memorySrc = this.handleDocData(tocData, tocItem.level - 1);
-      //           tocItem.key = memorySrc.key + "-" + memorySrc.children.length;
-      //           memorySrc.children.push(tocItem);
-      //           generateList.push(tocItem);
-      //           cLevel = tocItem.level;
-      //         }
-      //       }
-      //       this.tocData = tocData;
-      //       this.generateList = generateList;
-      //       console.log(tocData, generateList, 1221212121211);
-      //     }
-
-          // 鑾峰彇鎬婚〉鏁�
-          this.MG.file
-            .getPdfInfo({ md5: this.md5 })
-            .then((res) => {
-              console.log(res, 79879879879797979);
-              this.totalPage = res.totalPages;
-              this.getPageImage(this.currentPage - 1);
-            })
-            .catch((err) => {
-              console.error(err);
-            });
-        // })
-        // .catch((err) => {
-        //   console.error(err);
-        // });
+      this.MG.file
+        .getPdfInfo({ md5: this.preViewMd5 })
+        .then((res) => {
+          this.totalPage = res.totalPages;
+          this.createDom(this.currentPage);
+        })
+        .catch((err) => {
+          this.totalPage = 1;
+          this.createDom(this.currentPage);
+          console.error(err);
+        });
     },
     getPageImage(page) {
-      console.log(page, "page");
       const ctx = process.env.VUE_APP_API_URL;
-      this.fileLoading = true;
-      this.currentPageSrc =
+      return (
         ctx +
-        "/file/Preview/GetPageImage" +
+        "/file/GetPdfPageImage" +
         "?md5=" +
-        this.md5 +
+        this.preViewMd5 +
         "&index=" +
         page +
-        "&dpi=150";
+        "&dpi=200"
+      );
     },
   },
 };
 </script>
 <style scoped lang="less">
-.imgbox {
+.preview {
   width: 100%;
   height: 100%;
-  background-color: aquamarine;
-  img {
-    width: 100%;
+
+  .imageBox {
+    height: calc(100% - 30px);
+    overflow-x: hidden;
+    overflow-y: auto;
+    background: #ccc;
+    box-sizing: border-box;
+  }
+
+  .imageBox:hover {
+    cursor: zoom-in !important;
+  }
+
+  .bottom_tool {
+    height: 30px;
+    background-color: rgba(0, 0, 0, 0.8);
+    display: flex;
+    justify-content: flex-end;
+    align-items: center;
+    svg {
+      margin-right: 10px;
+      fill: #999;
+    }
+    svg:hover {
+      fill: #fff;
+      cursor: pointer;
+    }
   }
 }
 </style>

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