J'utilise jsPDF sur mon site pour générer des PDF. Mais maintenant, j'ai plusieurs DIV à imprimer dans un seul PDF. qui peut prendre 2 à 3 pages.
Par exemple:
<div id="part1">
content
</div>
<div id="part2">
content
</div>
<div id="part2">
content
</div>
mon code JS
function formtoPDF() {
jsPDF.API.mymethod = function() {
// 'this' will be ref to internal API object. see jsPDF source
// , so you can refer to built-in methods like so:
// this.line(....)
// this.text(....)
};
var doc = new jsPDF();
doc.mymethod();
var pdfPart1 = jQuery('#genPDFpart1');
var pdfPart2 = jQuery(".ltinerary");
var pdfPart3 = jQuery("#domElementHTML");
var specialElementHandlers = {
'#loadVar': function(element, renderer) {
return true;
}
};
doc.fromHTML(pdfPart1.html() + pdfPart3.html() + pdfPart3.html(), 15, 15, {
'width': 170,
'elementHandlers': specialElementHandlers
});
doc.output('save', 'Download.pdf');
}
Puis-je avoir une solution pour cela. Merci d'avance les copains.
J'ai le même problème de travail. En cherchant dans MrRio github j'ai trouvé ceci: https://github.com/MrRio/jsPDF/issues/101
Fondamentalement, vous devez toujours vérifier la taille réelle de la page avant d'ajouter du nouveau contenu.
doc = new jsPdf();
...
pageHeight= doc.internal.pageSize.height;
// Before adding new content
y = 500 // Height position of new content
if (y >= pageHeight)
{
doc.addPage();
y = 0 // Restart height position
}
doc.text(x, y, "value");
voici un exemple d'utilisation de html2canvas & jspdf, bien que la façon dont vous générez le canevas importe peu - nous allons simplement utiliser la hauteur de celui-ci comme point d'arrêt sur un for loop
, dans lequel une nouvelle page est créée et son contenu ajouté .
après la boucle for, le pdf est sauvegardé.
function makePDF() {
var quotes = document.getElementById('container-fluid');
html2canvas(quotes)
.then((canvas) => {
//! MAKE YOUR PDF
var pdf = new jsPDF('p', 'pt', 'letter');
for (var i = 0; i <= quotes.clientHeight/980; i++) {
//! This is all just html2canvas stuff
var srcImg = canvas;
var sX = 0;
var sY = 980*i; // start 980 pixels down for every new page
var sWidth = 900;
var sHeight = 980;
var dX = 0;
var dY = 0;
var dWidth = 900;
var dHeight = 980;
window.onePageCanvas = document.createElement("canvas");
onePageCanvas.setAttribute('width', 900);
onePageCanvas.setAttribute('height', 980);
var ctx = onePageCanvas.getContext('2d');
// details on this usage of this function:
// https://developer.mozilla.org/en-US/docs/Web/API/Canvas_API/Tutorial/Using_images#Slicing
ctx.drawImage(srcImg,sX,sY,sWidth,sHeight,dX,dY,dWidth,dHeight);
// document.body.appendChild(canvas);
var canvasDataURL = onePageCanvas.toDataURL("image/png", 1.0);
var width = onePageCanvas.width;
var height = onePageCanvas.clientHeight;
//! If we're on anything other than the first page,
// add another page
if (i > 0) {
pdf.addPage(612, 791); //8.5" x 11" in pts (in*72)
}
//! now we declare that we're working on that page
pdf.setPage(i+1);
//! now we add content to that page!
pdf.addImage(canvasDataURL, 'PNG', 20, 40, (width*.62), (height*.62));
}
//! after the for loop is finished running, we save the pdf.
pdf.save('Test.pdf');
}
});
}
J'ai trouvé la solution sur cette page: https://github.com/MrRio/jsPDF/issues/434
Je copie la solution ici: // supposons que votre image soit déjà dans une toile
var imgData = canvas.toDataURL('image/png');
/*
Here are the numbers (paper width and height) that I found to work.
It still creates a little overlap part between the pages, but good enough for me.
if you can find an official number from jsPDF, use them.
*/
var imgWidth = 210;
var pageHeight = 295;
var imgHeight = canvas.height * imgWidth / canvas.width;
var heightLeft = imgHeight;
var doc = new jsPDF('p', 'mm');
var position = 0;
doc.addImage(imgData, 'PNG', 0, position, imgWidth, imgHeight);
heightLeft -= pageHeight;
while (heightLeft >= 0) {
position = heightLeft - imgHeight;
doc.addPage();
doc.addImage(imgData, 'PNG', 0, position, imgWidth, imgHeight);
heightLeft -= pageHeight;
}
doc.save( 'file.pdf');
Vous pouvez utiliser html2canvas plugin et jsPDF. Ordre de traitement: Html au format png & png au format pdf
Exemple de code:
jQuery('#part1').html2canvas({
onrendered: function( canvas ) {
var img1 = canvas.toDataURL('image/png');
}
});
jQuery('#part2').html2canvas({
onrendered: function( canvas ) {
var img2 = canvas.toDataURL('image/png');
}
});
jQuery('#part3').html2canvas({
onrendered: function( canvas ) {
var img3 = canvas.toDataURL('image/png');
}
});
var doc = new jsPDF('p', 'mm');
doc.addImage( img1, 'PNG', 0, 0, 210, 297); // A4 sizes
doc.addImage( img2, 'PNG', 0, 90, 210, 297); // img1 and img2 on first page
doc.addPage();
doc.addImage( img3, 'PNG', 0, 0, 210, 297); // img3 on second page
doc.save("file.pdf");
Voici mon code, mais le problème est que le document ne se divise pas pour afficher l’autre partie du document dans une nouvelle page.
S'il vous plaît améliorer ce code.
<script type='text/javascript'>
$(document).on("click", "#btnExportToPDF", function () {
var table1 =
tableToJson($('#table1')[0]),
cellWidth =42,
rowCount = 0,
cellContents,
leftMargin = 2,
topMargin = 12,
topMarginTable =5,
headerRowHeight = 13,
rowHeight = 12,
l = {
orientation: 'p',
unit: 'mm',
format: 'a3',
compress: true,
fontSize: 11,
lineHeight: 1,
autoSize: false,
printHeaders: true
};
var doc = new jsPDF(l,'pt', 'letter');
doc.setProperties({
title: 'Test PDF Document',
subject: 'This is the subject',
author: 'author',
keywords: 'generated, javascript, web 2.0, ajax',
creator: 'author'
});
doc.cellInitialize();
$.each(table1, function (i, row)
{
rowCount++;
$.each(row, function (j, cellContent) {
if (rowCount == 1) {
doc.margins = 1;
doc.setFont("Times New Roman");
doc.setFontType("bold");
doc.setFontSize(11);
doc.cell(leftMargin, topMargin, cellWidth, headerRowHeight, cellContent, i)
}
else if (rowCount == 2) {
doc.margins = 1;
doc.setFont("Times ");
doc.setFontType("normal");
// or for normal font type use ------ doc.setFontType("normal");
doc.setFontSize(11);
doc.cell(leftMargin, topMargin, cellWidth, rowHeight, cellContent, i);
}
else {
doc.margins = 1;
doc.setFont("Times ");
doc.setFontType("normal ");
doc.setFontSize(11);
doc.cell(leftMargin, topMargin, cellWidth, rowHeight, cellContent, i);
// 1st=left margin 2nd parameter=top margin, 3rd=row cell width 4th=Row height
}
})
})
doc.save('sample Report.pdf');
});
function tableToJson(table) {
var data = [];
// first row needs to be headers
var headers = [];
for (var i=0; i<table.rows[0].cells.length; i++) {
headers[i] = table.rows[0].cells[i].innerHTML.toLowerCase().replace(/ /gi,'');
}
// go through cells
for (var i=1; i<table.rows.length; i++) {
var tableRow = table.rows[i];
var rowData = {};
for (var j=0; j<tableRow.cells.length; j++) {
rowData[ headers[j] ] = tableRow.cells[j].innerHTML;
}
data.Push(rowData);
}
return data;
}
</script>
$( document ).ready(function() {
$('#cmd').click(function() {
var options = {
pagesplit: true //include this in your code
};
var pdf = new jsPDF('p', 'pt', 'a4');
pdf.addHTML($("#pdfContent"), 15, 15, options, function() {
pdf.save('Menu.pdf');
});
});
});
Ne divise pas automatiquement les données en plusieurs pages. Vous pouvez diviser manuellement.
Si votre (rowCount * rowHeight)> 420 mm (hauteur A3 en mm) ajoute une nouvelle fonction de page. (Désolé, je ne peux pas modifier votre code sans exécuter) Après avoir ajouté une nouvelle page leftMargin, topMargin = 0; (recommencez) J'ai ajouté un exemple de code avec le vôtre. J'espère que c'est juste.
else {
doc.margins = 1;
doc.setFont("Times ");
doc.setFontType("normal ");
doc.setFontSize(11);
if ( rowCount * rowHeight > 420 ) {
doc.addPage();
rowCount = 3; // skip 1 and 2 above
} else {
// now rowcount = 3 ( top of new page for 3 )
// j is your x axis cell index ( j start from 0 on $.each function ) or you can add cellCount like rowCount and replace with
// rowcount is your y axis cell index
left = ( ( j ) * ( cellWidth + leftMargin );
top = ( ( rowcount - 3 ) * ( rowHeight + topMargin );
doc.cell( leftMargin, top, cellWidth, rowHeight, cellContent, i);
// 1st=left margin 2nd parameter=top margin, 3rd=row cell width 4th=Row height
}
}
Vous pouvez convertir le code html directement en pdf sans perte. Vidéo Youtube pour html => exemple pdf
Ceci est mon premier article qui ne prend en charge qu'une seule page http://www.techumber.com/html-to-pdf-conversion-using-javascript/ _
Maintenant, le second supportera les multiples pages . http://www.techumber.com/how-to-convert-html-to-pdf-using-javascript-multipage/
html2canvas(element[0], {
onrendered: function (canvas) {
pages = Math.ceil(element[0].clientHeight / 1450);
for (i = 0; i <= pages; i += 1) {
if (i > 0) {
pdf.addPage();
}
srcImg = canvas;
sX = 0;
sY = 1450 * i;
sWidth = 1100;
sHeight = 1450;
dX = 0;
dY = 0;
dWidth = 1100;
dHeight = 1450;
window.onePageCanvas = document.createElement("canvas");
onePageCanvas.setAttribute('width', 1100);
onePageCanvas.setAttribute('height', 1450);
ctx = onePageCanvas.getContext('2d');
ctx.drawImage(srcImg, sX, sY, sWidth, sHeight, dX, dY, dWidth, dHeight);
canvasDataURL = onePageCanvas.toDataURL("image/png");
width = onePageCanvas.width;
height = onePageCanvas.clientHeight;
pdf.setPage(i + 1);
pdf.addImage(canvasDataURL, 'PNG', 35, 30, (width * 0.5), (height * 0.5));
}
pdf.save('testfilename.pdf');
}
});