Image to PDF convertor-screenshot to pdf - Appcelerator Titanium

app.js

var PDF = require('bencoding.pdf');
var converters = PDF.createConverters();

var win = Ti.UI.createWindow({ backgroundColor:'#fff'});
var vwContent = Ti.UI.createView({
	top:0, layout:'vertical'
});
win.add(vwContent);

vwContent.add(Ti.UI.createView({
	height:'50%', backgroundColor:'green', width:Ti.UI.FILL
}));

vwContent.add(Ti.UI.createView({
	height:'50%', backgroundColor:'red', width:Ti.UI.FILL
}));

var goButton = Ti.UI.createButton({
	title:'Make Screenshot a PDF', bottom:10, left:10, right:10, height:80	
});
win.add(goButton);

goButton.addEventListener('click',function(e){
	Ti.Media.takeScreenshot(function(event){
		alert('ok');
		var image = event.media;
		var pdfBlob = converters.convertImageToPDF(image,100);
		var pdfFile = Ti.Filesystem.getFile(Ti.Filesystem.applicationDataDirectory, 'text.pdf');
		pdfFile.write(pdfBlob);	
	});
});
win.open();