From d4730d0b3d064c98a109de3c8e05dcd109319109 Mon Sep 17 00:00:00 2001 From: shijing Date: Fri, 10 Mar 2023 08:50:01 +0800 Subject: [PATCH] =?UTF-8?q?=E7=AE=80=E5=8D=95=E5=AF=BC=E5=87=BA?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- package.json | 2 + src/components/scOpl/scFire.vue | 602 +++++++++++++++++--------------- src/utils/html2pdf.js | 120 +++++++ src/views/hrm/clock_record.vue | 2 +- 4 files changed, 437 insertions(+), 289 deletions(-) create mode 100644 src/utils/html2pdf.js diff --git a/package.json b/package.json index 46078277..72b9b337 100644 --- a/package.json +++ b/package.json @@ -20,7 +20,9 @@ "dagre-d3": "^0.6.4", "echarts": "5.3.2", "element-plus": "2.2.3", + "html2canvas": "^1.4.1", "json-editor-vue3": "^1.0.6", + "jspdf": "^2.5.1", "nprogress": "0.2.0", "qrcodejs2": "0.0.2", "sortablejs": "1.15.0", diff --git a/src/components/scOpl/scFire.vue b/src/components/scOpl/scFire.vue index aded2e06..7bf43250 100644 --- a/src/components/scOpl/scFire.vue +++ b/src/components/scOpl/scFire.vue @@ -1,297 +1,300 @@ diff --git a/src/utils/html2pdf.js b/src/utils/html2pdf.js new file mode 100644 index 00000000..f8064d40 --- /dev/null +++ b/src/utils/html2pdf.js @@ -0,0 +1,120 @@ +import jsPDF from 'jspdf' +import html2canvas from 'html2canvas' + +/* +* 使用说明 +* ele:需要导出pdf的容器元素(dom节点 不是id) +* pdfFileName: 导出文件的名字 通过调用outPutPdfFn方法也可传参数改变 +* splitClassName: 避免分段截断的类名 当pdf有多页时需要传入此参数 , 避免pdf分页时截断元素 如表格 +* 调用方式 先 let pdf = new PdfLoader(ele, 'pdf' ,'itemClass'); +* 若想改变pdf名称 pdf.outPutPdfFn(fileName); outPutPdfFn方法返回一个promise 可以使用then方法处理pdf生成后的逻辑 +* */ +class PdfLoader { + constructor(ele, pdfFileName, splitClassName) { + this.ele = ele + this.pdfFileName = pdfFileName + this.splitClassName = splitClassName + this.A4_WIDTH = 595 + this.A4_HEIGHT = 842 + } + + async getPDF(resolve) { + const ele = this.ele + const pdfFileName = this.pdfFileName + const eleW = ele.offsetWidth// 获得该容器的宽 + const eleH = ele.scrollHeight// 获得该容器的高 + const eleOffsetTop = ele.offsetTop// 获得该容器到文档顶部的距离 + const eleOffsetLeft = ele.offsetLeft// 获得该容器到文档最左的距离 + const canvas = document.createElement('canvas') + let abs = 0 + const win_in = document.documentElement.clientWidth || document.body.clientWidth// 获得当前可视窗口的宽度（不包含滚动条） + const win_out = window.innerWidth// 获得当前窗口的宽度（包含滚动条） + if (win_out > win_in) { + abs = (win_out - win_in) / 2// 获得滚动条宽度的一半 + } + canvas.width = eleW * 2// 将画布宽&&高放大两倍 + canvas.height = eleH * 2 + const context = canvas.getContext('2d') + context.scale(2, 2) // 增强图片清晰度 + context.translate(-eleOffsetLeft - abs, -eleOffsetTop) + html2canvas(ele, { + useCORS: true// 允许canvas画布内可以跨域请求外部链接图片, 允许跨域请求。 + }).then(async canvas => { + const contentWidth = canvas.width + const contentHeight = canvas.height + // 一页pdf显示html页面生成的canvas高度; + const pageHeight = (contentWidth / this.A4_WIDTH) * this.A4_HEIGHT // 这样写的目的在于保持宽高比例一致 pageHeight/canvas.width = a4纸高度/a4纸宽度// 宽度和canvas.width保持一致 + // 未生成pdf的html页面高度 + let leftHeight = contentHeight + // 页面偏移 + let position = 0 + // a4纸的尺寸[595,842],单位像素，html页面生成的canvas在pdf中图片的宽高 + const imgWidth = this.A4_WIDTH - 10 // -10为了页面有右边距 + const imgHeight = (this.A4_WIDTH / contentWidth) * contentHeight + const pageData = canvas.toDataURL('image/jpeg', 1.0) + const pdf = jsPDF('', 'pt', 'a4') + // 有两个高度需要区分，一个是html页面的实际高度，和生成pdf的页面高度(841.89) + // 当内容未超过pdf一页显示的范围，无需分页 + if (leftHeight < pageHeight) { + // 在pdf.addImage(pageData, 'JPEG', 左，上，宽度，高度)设置在pdf中显示； + pdf.addImage(pageData, 'JPEG', 5, 0, imgWidth, imgHeight) + // pdf.addImage(pageData, 'JPEG', 20, 40, imgWidth, imgHeight); + } else { + // 分页 + while (leftHeight > 0) { + pdf.addImage(pageData, 'JPEG', 5, position, imgWidth, imgHeight) + leftHeight -= pageHeight + position -= this.A4_HEIGHT + // 避免添加空白页 + if (leftHeight > 0) { + pdf.addPage() + } + } + } + pdf.save(pdfFileName + '.pdf', { returnPromise: true }).then(() => { + // 去除添加的空div 防止页面混乱 + const doms = document.querySelectorAll('.emptyDiv') + for (let i = 0; i < doms.length; i++) { + doms[i].remove() + } + }) + this.ele.style.height = '' + resolve() + }) + } + //此方法是防止（图表之类）内容因为A4纸张问题被截断 + async outPutPdfFn(pdfFileName) { + return new Promise((resolve, reject) => { + this.ele.style.height = 'initial' + pdfFileName ? this.pdfFileName = pdfFileName : null + const target = this.ele + const pageHeight = target.scrollWidth / this.A4_WIDTH * this.A4_HEIGHT + // 获取分割dom，此处为class类名为item的dom + const domList = document.getElementsByClassName(this.splitClassName) + // 进行分割操作，当dom内容已超出a4的高度，则将该dom前插入一个空dom，把他挤下去，分割 + let pageNum = 1 // pdf页数 + const eleBounding = this.ele.getBoundingClientRect() + for (let i = 0; i < domList.length; i++) { + const node = domList[i] + const bound = node.getBoundingClientRect() + const offset2Ele = bound.top - eleBounding.top + const currentPage = Math.ceil((bound.bottom - eleBounding.top) / pageHeight) // 当前元素应该在哪一页 + if (pageNum < currentPage) { + pageNum++ + const divParent = domList[i].parentNode // 获取该div的父节点 + const newNode = document.createElement('div') + newNode.className = 'emptyDiv' + newNode.style.background = 'white' + newNode.style.height = (pageHeight * (pageNum - 1) - offset2Ele + 30) + 'px' // +30为了在换下一页时有顶部的边距 + newNode.style.width = '100%' + divParent.insertBefore(newNode, node) //在每一个节点前面插入一个空的新节点，防止内容被分割截断 + } + } + // 异步函数，导出成功后处理交互 + this.getPDF(resolve, reject) + }) + } +} + +export default PdfLoader + diff --git a/src/views/hrm/clock_record.vue b/src/views/hrm/clock_record.vue index 2740293c..ab4b8278 100644 --- a/src/views/hrm/clock_record.vue +++ b/src/views/hrm/clock_record.vue @@ -230,7 +230,7 @@ text: '数据请求中，请稍后...', background: 'rgba(0, 0, 0, 0)', }) - that.$API.hrm.employee.list.req({page:1,page_size:999,belong_dept:that.query.employee__belong_dept}) + that.$API.hrm.employee.list.req({page:1,page_size:999,type__in:'employee,remployee',belong_dept:that.query.employee__belong_dept}) .then(res=>{ let promiseList = []; let rowData1 = [],rowData2=[];