vue3+vite在线预览pdf

效果图

代码

<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 = "./pdf.worker.js";const loadingTask = pdfjsLib.getDocument(state.source);loadingTask.promise.then((pdf) => {state.numPages = pdf.numPages;});
});</script>
<style lang="css" scoped>
.pdf-preview {position: fixed;height: 100vh;width: 100vw;padding: 20px 0;box-sizing: border-box;background-color: #e9e9e9;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>