76 lines
2.9 KiB
JavaScript
76 lines
2.9 KiB
JavaScript
|
/* eslint-disable */
|
|||
|
|
//使用JQuery方式写的。
|
|||
|
|
|
|||
|
|
import html2canvas from 'html2canvas';
|
|||
|
|
import JsPDF from 'jspdf';
|
|||
|
|
// import $ from 'jquery';
|
|||
|
|
|
|||
|
|
// console.log($, '这是什么什么');
|
|||
|
|
function download(ele){
|
|||
|
|
var element = $("#demo"); // 这个dom元素是要导出pdf的div容器
|
|||
|
|
console.log(element,'1212122');
|
|||
|
|
// var element = ele; // 这个dom元素是要导出pdf的div容器
|
|||
|
|
var w = element.width(); // 获得该容器的宽
|
|||
|
|
var h = element.height(); // 获得该容器的高
|
|||
|
|
var offsetTop = element.offset().top; // 获得该容器到文档顶部的距离
|
|||
|
|
var offsetLeft = element.offset().left; // 获得该容器到文档最左的距离
|
|||
|
|
|
|||
|
|
console.log(offsetTop,'------',offsetLeft);
|
|||
|
|
var canvas = document.createElement("canvas");
|
|||
|
|
var abs = 0;
|
|||
|
|
var win_i = $(window).width(); // 获得当前可视窗口的宽度（不包含滚动条）
|
|||
|
|
var win_o = window.innerWidth; // 获得当前窗口的宽度（包含滚动条）
|
|||
|
|
|
|||
|
|
console.log(canvas, abs, win_i, win_o);
|
|||
|
|
|
|||
|
|
if(win_o>win_i){
|
|||
|
|
abs = (win_o - win_i)/2; // 获得滚动条长度的一半
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
canvas.width = w * 2; // 将画布宽&&高放大两倍
|
|||
|
|
canvas.height = h * 2;
|
|||
|
|
var context = canvas.getContext("2d");
|
|||
|
|
context.scale(2, 2);
|
|||
|
|
context.translate(-offsetLeft-abs,-offsetTop);
|
|||
|
|
// 这里默认横向没有滚动条的情况，因为offset.left(),有无滚动条的时候存在差值，因此
|
|||
|
|
// translate的时候，要把这个差值去掉
|
|||
|
|
// html2canvas(element).then( (canvas)=>{ //报错
|
|||
|
|
html2canvas(element[0]).then( (canvas)=>{
|
|||
|
|
var contentWidth = canvas.width;
|
|||
|
|
var contentHeight = canvas.height;
|
|||
|
|
//一页pdf显示html页面生成的canvas高度;
|
|||
|
|
var pageHeight = contentWidth / 592.28 * 841.89;
|
|||
|
|
//未生成pdf的html页面高度
|
|||
|
|
var leftHeight = contentHeight;
|
|||
|
|
//页面偏移
|
|||
|
|
var position = 0;
|
|||
|
|
//a4纸的尺寸[595.28,841.89]，html页面生成的canvas在pdf中图片的宽高
|
|||
|
|
var imgWidth = 595.28;
|
|||
|
|
var imgHeight = 592.28/contentWidth * contentHeight;
|
|||
|
|
|
|||
|
|
var pageData = canvas.toDataURL('image/jpeg', 1.0);
|
|||
|
|
var pdf = new 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) {
|
|||
|
|
pdf.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight);
|
|||
|
|
} else { // 分页
|
|||
|
|
while(leftHeight > 0) {
|
|||
|
|
pdf.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight)
|
|||
|
|
leftHeight -= pageHeight;
|
|||
|
|
position -= 841.89;
|
|||
|
|
//避免添加空白页
|
|||
|
|
if(leftHeight > 0) {
|
|||
|
|
pdf.addPage();
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
}
|
|||
|
|
pdf.save('我的简历.pdf');
|
|||
|
|
})
|
|||
|
|
}
|
|||
|
|
export default {
|
|||
|
|
download
|
|||
|
|
}
|
|||
|
|
|