物联网vue3 前端实现pdf打印预览 printjs

拉不拉稀肚拉稀 发表于 2024-12-25 21:41:17

vue3 前端实现pdf打印预览 printjs

https://i-blog.csdnimg.cn/direct/9761f12a969a48edbc263fc18d344cab.png

[*] 在utils建print.ts文件
interface PrintFunction {
extendOptions: Function;
getStyle: Function;
setDomHeight: Function;
toPrint: Function;
}
const Print = function (dom, options?: object): PrintFunction {
options = options || {};
// @ts-expect-error
if (!(this instanceof Print)) return new Print(dom, options);
this.conf = {
styleStr: “”,
// Elements that need to dynamically get and set the height
setDomHeightArr: [],
// Callback before printing
printBeforeFn: null,
// Callback after printing
printDoneCallBack: null
};
for (const key in this.conf) {
// eslint-disable-next-line no-prototype-builtins
if (key && options.hasOwnProperty(key)) {
this.conf = options;
}
}
if (typeof dom === “string”) {
this.dom = document.querySelector(dom);
} else {
this.dom = this.isDOM(dom) ? dom : dom.$el;
}
if (this.conf.setDomHeightArr && this.conf.setDomHeightArr.length) {
this.setDomHeight(this.conf.setDomHeightArr);
}
this.init();
};
Print.prototype = {
/**

[*]init
/
init: function (): void {
const content = this.getStyle() + this.getHtml();
this.writeIframe(content);
},
/*
[*]Configuration property extension
[*]@param {Object} obj
[*]@param {Object} obj2
/
extendOptions: function (obj, obj2: T): T {
for (const k in obj2) {
obj = obj2;
}
return obj;
},
/*
Copy all styles of the original page
*/
getStyle: function (): string {
let str = “”;
const styles: NodeListOf = document.querySelectorAll(“style,link”);
for (let i = 0; i < styles.length; i++) {
str += styles.outerHTML;
}
str += <style>.no-print{display:none;}${this.conf.styleStr}</style>;
return str;
},
// form assignment
getHtml: function (): Element {
const inputs = document.querySelectorAll(“input”);
const selects = document.querySelectorAll(“select”);
const textareas = document.querySelectorAll(“textarea”);
const canvass = document.querySelectorAll(“canvas”);
for (let k = 0; k < inputs.length; k++) {
if (inputs.type == "checkbox" || inputs.type == "radio") {
if (inputs.checked == true) {
   inputs.setAttribute("checked", "checked");
} else {
   inputs.removeAttribute("checked");
}
} else if (inputs.type == "text") {
inputs.setAttribute("value", inputs.value);
} else {
inputs.setAttribute("value", inputs.value);
}
}

for (let k2 = 0; k2 < textareas.length; k2++) {
if (textareas.type == "textarea") {
textareas.innerHTML = textareas.value;
}
}

for (let k3 = 0; k3 < selects.length; k3++) {
if (selects.type == "select-one") {
const child = selects.children;
for (const i in child) {
   if (child.tagName == "OPTION") {
   if ((child as any).selected == true) {
      child.setAttribute("selected", "selected");
   } else {
      child.removeAttribute("selected");
   }
   }
}
}
}

for (let k4 = 0; k4 < canvass.length; k4++) {
const imageURL = canvass.toDataURL("image/png");
const img = document.createElement("img");
img.src = imageURL;
img.setAttribute("style", "max-width: 100%;");
img.className = "isNeedRemove";
canvass.parentNode.insertBefore(img, canvass.nextElementSibling);
}

return this.dom.outerHTML;
},
/**
create iframe
*/
writeIframe: function (content) {
let w: Document | Window;
let doc: Document;
const iframe: HTMLIFrameElement = document.createElement(“iframe”);
const f: HTMLIFrameElement = document.body.appendChild(iframe);
iframe.id = “myIframe”;
iframe.setAttribute(
“style”,
“position:absolute;width:0;height:0;top:-10px;left:-10px;”
);
// eslint-disable-next-line prefer-const
w = f.contentWindow || f.contentDocument;
// eslint-disable-next-line prefer-const
doc = f.contentDocument || f.contentWindow.document;
doc.open();
doc.write(content);
doc.close();
const removes = document.querySelectorAll(".isNeedRemove");
for (let k = 0; k < removes.length; k++) {
removes.parentNode.removeChild(removes);
}

// eslint-disable-next-line @typescript-eslint/no-this-alias
const _this = this;
iframe.onload = function (): void {
// Before popping, callback
if (_this.conf.printBeforeFn) {
_this.conf.printBeforeFn({ doc });
}
_this.toPrint(w);
setTimeout(function () {
document.body.removeChild(iframe);
// After popup, callback
if (_this.conf.printDoneCallBack) {
   _this.conf.printDoneCallBack();
}
}, 100);
};
},
/**
Print
/
toPrint: function (frameWindow): void {
try {
setTimeout(function () {
frameWindow.focus();
try {
if (!frameWindow.document.execCommand(“print”, false, null)) {
frameWindow.print();
}
} catch (e) {
frameWindow.print();
}
frameWindow.close();
}, 10);
} catch (err) {
console.error(err);
}
},
isDOM:
typeof HTMLElement === “object”
? function (obj) {
return obj instanceof HTMLElement;
}
: function (obj) {
return (
obj &&
typeof obj === “object” &&
obj.nodeType === 1 &&
typeof obj.nodeName === “string”
);
},
/*

[*]Set the height of the specified dom element by getting the existing height of the dom element and setting
[*]@param {Array} arr
*/
setDomHeight(arr) {
if (arr && arr.length) {
arr.forEach(name => {
const domArr = document.querySelectorAll(name);
console.log(name, domArr);
domArr.forEach(dom => {
dom.style.height = dom.offsetHeight + “px”;
});
});
}
}
};
export default Print;

[*] .vue页面利用
html
<div class="w-full p-1" id="printApply" style="overflow: auto">
<div class="text-center text-2xl">江苏微导纳米股份有限公司</div>
<div class="text-center text-xl mb-6 mt-2">
工具出库单
</div>
<div class="flex">
<div class="flex-1 mb-2">
   <div class="mb-3">事业部：{{ dataSource.chargeDept }}</div>
   <div class="mb-3">班组: {{ dataSource.groupName }}</div>
   <div class="">联系人： ____________________</div>
</div>
<div class="flex-1 mb-2">
   <div class="mb-3">申请人：{{ dataSource.applicant }}</div>
   <div class="mb-3">申请部门：{{ dataSource.applicantDept }}</div>
   <div class="">联系电话： _____________________</div>
</div>
<div class="flex-1 mb-2">
   <div class="mb-3">工具属性：{{ dataSource.toolProperty }}</div>
   <div class="mb-3">工厂: {{ dataSource.factoryName }}</div>
</div>
</div>
<div class="my-3 w-full">
<table>
   <colgroup>
   <col width="50" />
   <col width="120" />
   <col width="150" />
   <col width="150" />
   <col width="100" />
   <col width="100" />
   <col width="100" />
   <col width="100" />
   </colgroup>
   <tbody>
   <tr height="32" class="">
      <td class="text-center font-bold">序号</td>
      <td class="text-center font-bold">存货编码</td>
      <td class="text-center font-bold">存货名称</td>
      <td class="text-center font-bold">需求时间</td>
      <td class="text-center font-bold">重要程度</td>
      <td class="text-center font-bold">请购用途</td>
      <td class="text-center font-bold">规格型号</td>
      
      <td class="text-center font-bold">申领数量</td>
   </tr>
   <template v-for="(item, index) in dataSource.lists">
      <tr height="32">
         <td class="text-center">{{ index+1 }}</td>
         <td class="text-center">{{ item.cInvCode }}</td>
         <td class="text-center">{{ item.cInvName }}</td>
         <td class="text-center">{{ item.demandTime&&item.demandTime.slice(0, 10) }}</td>
         <td class="text-center">{{ item.significance }}</td>
         <td class="text-center">{{ item.purpose }}</td>
         <td class="text-center">{{ item.cInvStd }}</td>
         
         <td class="text-center">{{ item.applicationQty }}</td>
      </tr>

   </template>
   <tr height="32">
      <td class="text-center font-bold">合计：</td>
      <td colspan="6" class="text-left"></td>
      <td class="text-center">{{sum}}</td>
   </tr>
   <tr height="65">
      <td colspan="8" class="text-left ">
         备注：
         <br />
         1、请双方确认无误后签字确认，谢谢！
      </td>
   </tr>
   </tbody>
</table>
</div>
<div class="w-4/5 mt-2 flex justify-around">
<div class="">
   <div class="">发起人签字:</div>
   <div class="mt-2">发起日期:</div>
</div>
<div class="">
   <div class="">审批人签字:</div>
   <div class="mt-2">审批日期:</div>
</div>
</div>
</div>

css
#printApply {
display: none;
}
// 设置打印的时候，显示
#printApply {
@media print {
display: block;
}
}

#printApply table {
border-top: 1px solid #333;
border-left: 1px solid #333;
border-spacing: 0;
background-color: #fff;
width: 100%;
}
#printApply table td {
border-bottom: 1px solid #333;
border-right: 1px solid #333;
font-size: 14px;
padding: 5px;
}
ts
import {
Printer
} from "@element-plus/icons-vue";
import Print from "@/utils/print";

const dataSource = ref({
chargeDept: "",
groupName: "",
applicant: "",
applicantDept: "",
toolProperty: "",
factoryName: "",
lists: []
})
let sum = 0
const handlePrint = async (row) => {
sum = 0
dataSource.value = row
dataSource.value.lists.forEach((item) => {
sum += item.applicationQty
})
setTimeout(() => {
Print("#printApply").toPrint;
},500)
};
注意：在主页面打印需要给#printApply设置隐蔽设置打印的时候，再显示，即
#printApply {
display: none;
}
#printApply {
@media print {
display: block;
}
}

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vue3 前端实现pdf打印预览 printjs