html2canvas and pdfmake create blank pdf - angularjs

Question

I'm trying to generate a pdf from an html div with html2canvas and pdfMake but always got a blank page or just part of the div! How can I get the entire div content?
Here is the js code :
$scope.PrintFiche = function () {
var prom = new Promise(function (resolve, reject) {
html2canvas(document.getElementById('DevisImpression'), {
onrendered: function (canvas) {
var data = canvas.toDataURL("image/png");
var docDefinition = {
content: [{
image: data
}]
};
resolve(docDefinition);
}
});
})
prom.then(function (docDef) {
pdfMake.createPdf(docDef).download($scope.FicheName + ".pdf");
})
}
And the html :
<div class="Partie" id="DevisImpression">
<div id="PartieInner">
<h2 id="TitreDevis">
<b>
Etablissement du devis
</b>
</h2>
<div id="ImgVoitureDevis">
<img id="ImgVoitureAdapt" src="../../Assets/Images/test.jpg" />
</div>
<div id="OptMult">
<table id="TableDevis">
<tr>
<td class="td1">
Modèle :
</td>
<td class="td2">
{{modele.displayName}}
</td>
</tr>
<tr>
<td class="td1">
Classe :
</td>
<td class="td2">
{{classe.displayName}}
</td>
</tr>
<tr>
<td class="td1">
Moteur :
</td>
<td class="td2">
{{moteur.displayName}}
</td>
</tr>
<tr>
<td class="td1">
Couleur :
</td>
<td class="td2">
{{couleur.displayName}}
</td>
</tr>
<tr>
<td class="td1">
Jantes :
</td>
<td class="td2">
{{jante.displayName}}
</td>
</tr>
</table>
</div>
<table id="Devis">
<tr>
<th class="tdDevis2">
Options
</th>
<th class="tdDevis2">
Prix
</th>
</tr>
<tr ng-repeat="optionDev in optionsDevis">
<td class="td3">
{{optionDev.displayName}}
</td>
<td class="td4">
{{optionDev.prix}} €
</td>
</tr>
</table>
</div>
<h2 id="TotalTitre">
<b>
TOTAL
</b>
</h2>
<input type="text" id="Total" value="{{total}} €" disabled />
<br />
</div>

Answer 1

I have a simple solution. Try this.
$scope.downloadQuotation = function () {
html2canvas(document.getElementById('rosterPrintView'), {
onrendered: function (canvas) {
var data = canvas.toDataURL();
var docDefinition = {
content: [{
image: data,
width: 500
}]
};
pdfMake.createPdf(docDefinition).download("Roster.pdf");
}
});
};