1、依赖
npm i pdfjs-dist
npm i vue-pdf-embed
2、代码实现
<template>
<div class="pdf-preview">
<div class="pdf-wrap">
<vue-pdf-embed :source="state.source" :style="scale" class="vue-pdf-embed" :page="state.pageNum" />
</div>
<div class="page-tool">
<div class="page-tool-item" @click="lastPage()">上一页</div>
<div class="page-tool-item" @click="nextPage()">下一页</div>
<div class="page-tool-item">{{ state.pageNum }}/{{ state.numPages }}</div>
<div class="page-tool-item" @click="pageZoomOut()">放大</div>
<div class="page-tool-item" @click="pageZoomIn()">缩小</div>
<div class="page-tool-item" @click="$emit('close')">关闭</div>
</div>
</div>
</template>
<script setup lang="ts">
import VuePdfEmbed from "vue-pdf-embed";
//import { createLoadingTask } from "vue3-pdfjs/esm/vue-pdf.js";
import * as pdfjsLib from "pdfjs-dist";
import { reactive, onMounted, computed } from "vue";
const props = defineProps({
pdfUrl: {
type: String,
required: true
}
})
const state = reactive({
// source: props.pdfUrl, //预览pdf文件地址
// Error during font loading: The CMap "baseUrl" parameter must be specified, ensure that the "cMapUrl" and "cMapPacked" API parameters are provided.
// 直接路径报错,改用对象
source: {
url: props.pdfUrl,
cMapUrl: 'https://cdn.jsdelivr/npm/pdfjs-dist@3.0.279/cmaps/',
cMapPacked: true,
},
pageNum: 1, //当前页面
scale: 1, // 缩放比例
numPages: 0, // 总页数
});
const scale = computed(() => `transform:scale(${state.scale})`)
function lastPage() {
if (state.pageNum > 1) {
state.pageNum -= 1;
}
}
function nextPage() {
if (state.pageNum < state.numPages) {
state.pageNum += 1;
}
}
function pageZoomOut() {
if (state.scale < 2) {
state.scale += 0.1;
}
}
function pageZoomIn() {
if (state.scale > 0.8) {
state.scale -= 0.1;
}
}
onMounted(() => {
pdfjsLib.GlobalWorkerOptions.workerSrc = require("pdfjs-dist/legacy/build/pdf.worker.entry.js");
const loadingTask = pdfjsLib.getDocument(state.source.url);
loadingTask.promise.then((pdf) => {
state.numPages = pdf.numPages;
});
});
</script>
<style lang="css" scoped>
.pdf-preview {
position: fixed;
height: 100vh;
width: 100vw;
padding: 20px 0 100px 0;
box-sizing: border-box;
background-color: rgba(0, 0, 0, 0.5);
left: 0;
top: 0;
z-index: 99999999;
overflow-y: auto;
}
.pdf-wrap {
overflow-y: auto;
}
.vue-pdf-embed {
text-align: center;
width: 60vw;
border: 1px solid #e5e5e5;
margin: 0 auto;
box-sizing: border-box;
}
.page-tool {
position: fixed;
bottom: 35px;
padding-left: 15px;
padding-right: 15px;
display: flex;
align-items: center;
background: rgb(66, 66, 66);
border-radius: 19px;
z-index: 100;
cursor: pointer;
margin-left: 50%;
transform: translateX(-50%);
}
.page-tool-item {
padding: 8px 15px;
padding-left: 10px;
cursor: pointer;
color: #fff !important;
}
</style>
3、使用
import PdfPreviewDialog from '@/components/pdfPreviewDialog.vue'
// 模版
<pdf-preview-dialog v-if="previewPdfUrl" :pdfUrl="previewPdfUrl" @close="previewPdfUrl = null"></pdf-preview-dialog>
4、效果
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