protected bool CreateQRCodeForSubject(out string qr_code_url)
{
qr_code_url = null;
/* obtain the URL which should be encoded in the QR code (being
* the back-reference to the object which this report is about,
* for example a safety incident report */
var url_of_subject = URLOfSubject;
if (String.IsNullOrWhiteSpace(url_of_subject))
{
Tracing.WarningBkg("Unable to ");
}
else
{
/* create the qr code */
var c = new QRCode();
using (var qr_pic = c.Generate(url_of_subject, Html.cstQRCode_EdgePx, Html.cstQRCode_EdgePx, 20, HRefIdentifierOfSubject))
{
if (qr_pic == null)
{
Tracing.WarningBkg("Failed to create QR code image");
}
else
{
int qr_binid;
using (var image = new MemoryStream())
{
qr_pic.Save(image, ImageFormat.Png);
var obj = new WebFileDescriptor()
{
Contenttype = mime.cstMIMEPNG,
EOK = null,
Label = url_of_subject,
LCID = LCID,
URI = String.Empty,
Chunk = image
};
/* store the picture */
qr_binid = OnBuiltinReportStoreobject(obj);
}
/* return the reference to the picture */
if (qr_binid <= 0)
{
Tracing.WarningBkg("Could not store QR code image");
}
else
{
qr_code_url = MediaURL(qr_binid, null, null, null);
}
}
}
}
/* if we managed to obtain an url, we deem suceeded */
return(!String.IsNullOrWhiteSpace(qr_code_url));
}
protected int OnBuiltinReportStoreobject(WebFileDescriptor obj)
{
if (BuiltinReportStoreobject == null)
{
return(-1);
}
else
{
var payl = new ReportStoreobjectEvent()
{
object_to_store = obj,
BinID = -1
};
BuiltinReportStoreobject(this, payl);
if (payl != null)
{
return(payl.BinID);
}
else
{
return(-1);
}
}
}
