import html2Canvas from 'html2canvas'
import JsPDF from 'jspdf'
import { Loading } from 'element-ui';
function footer(doc){
doc.text(150,285,'page ' + doc.page); //print number bottom right
doc.page ++;
};
export default{
install (Vue, options) {
Vue.prototype.getPdf = function (id, title,sgin) {
let loadingInstance = Loading.service({target:'page_main'});
html2Canvas(document.querySelector(`#${id}`), {
// allowTaint: true
useCORS: true,
scale: 1.1,
scrollY: 0,
}).then(function (canvas) {
let contentWidth = canvas.width;
let contentHeight = canvas.height;
let pageHeight = contentWidth / 592.28 * 841.89;
let leftHeight = contentHeight;
let position = 0;
let imgWidth = 595.28;
let imgHeight = 592.28 / contentWidth * contentHeight;
let pageData = canvas.toDataURL('image/jpeg', 1.0);
let PDF = new JsPDF('', 'pt', 'a4');
let logo =document.querySelector(`#logo`);
let pageNumber=1;
if (leftHeight < pageHeight) {
PDF.addImage(pageData, 'JPEG', 0, 0, imgWidth, imgHeight);
PDF.addImage(logo, 'PNG', 10, 6);
} else {
while (leftHeight > 0) {
PDF.addImage(pageData, 'JPEG', 0, position, imgWidth, imgHeight);
if(pageNumber==1){
pageNumber++
PDF.addImage(logo, 'PNG', 10, 6);
}
// PDF.setFont('msyh')
// PDF.text(500,13,sgin);
leftHeight -= pageHeight;
position -= 841.89;
if (leftHeight > 0) {
PDF.addPage();
}
}
}
PDF.save(title + '.pdf')
loadingInstance.close();
}
)
}
}
}