jessikitty/Disco
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Document Template Binary QR Codes

Browse Source 
The QR Code now stores the data using a custom binary encoding format.
This reduces the amount of data stored by ~30%. This increases the
chance of a lower-version QR Code being used and the likelyhood of even
small QR Codes being detected. Compatibility with previously generated
documents is maintained.
This commit is contained in:
Gary Sharp
2016-09-15 19:27:52 +10:00
parent 5ea9a814d6
commit acfa0e5094
5 changed files with 317 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files
Disco.BI/BI/Interop/Pdf/PdfGenerator.cs
+19 -5
View File
@@ -4,10 +4,12 @@ using Disco.Models.BI.Expressions;
using Disco.Models.Repository;
using Disco.Models.Services.Documents;
using Disco.Services;
using Disco.Services.Documents;
using Disco.Services.Expressions;
using Disco.Services.Interop.ActiveDirectory;
using Disco.Services.Users;
using iTextSharp.text.pdf;
using iTextSharp.text.pdf.codec;
using System;
using System.Collections;
using System.Collections.Concurrent;
@@ -135,11 +137,23 @@ namespace Disco.BI.Interop.Pdf
for (int pdfFieldOrdinal = 0; pdfFieldOrdinal < fields.Size; pdfFieldOrdinal++)
{
AcroFields.FieldPosition pdfFieldPosition = pdfFieldPositions[pdfFieldOrdinal];
string pdfBarcodeContent = dt.CreateUniqueIdentifier(Database, Data, CreatorUser, TimeStamp, pdfFieldPosition.page).ToQRCodeString();
BarcodeQRCode pdfBarcode = new BarcodeQRCode(pdfBarcodeContent, (int)pdfFieldPosition.position.Width, (int)pdfFieldPosition.position.Height, null);
iTextSharp.text.Image pdfBarcodeImage = pdfBarcode.GetImage();
pdfBarcodeImage.SetAbsolutePosition(pdfFieldPosition.position.Left, pdfFieldPosition.position.Bottom);
pdfStamper.GetOverContent(pdfFieldPosition.page).AddImage(pdfBarcodeImage);
// Create Binary Unique Identifier
var pageUniqueId = dt.CreateUniqueIdentifier(Database, Data, CreatorUser, TimeStamp, pdfFieldPosition.page);
var pageUniqueIdBytes = pageUniqueId.ToQRCodeBytes();
// Encode to QRCode byte array
var pageUniqueIdWidth = (int)pdfFieldPosition.position.Width;
var pageUniqueIdHeight = (int)pdfFieldPosition.position.Height;
var pageUniqueIdEncoded = QRCodeBinaryEncoder.Encode(pageUniqueIdBytes, pageUniqueIdWidth, pageUniqueIdHeight);
// Encode byte array to Image
var pageUniqueIdImageData = CCITTG4Encoder.Compress(pageUniqueIdEncoded, pageUniqueIdWidth, pageUniqueIdHeight);
var pageUniqueIdImage = iTextSharp.text.Image.GetInstance(pageUniqueIdWidth, pageUniqueIdHeight, false, 256, 1, pageUniqueIdImageData, null);
// Add to the pdf page
pageUniqueIdImage.SetAbsolutePosition(pdfFieldPosition.position.Left, pdfFieldPosition.position.Bottom);
pdfStamper.GetOverContent(pdfFieldPosition.page).AddImage(pageUniqueIdImage);
}
// Hide Fields
PdfDictionary field = fields.GetValue(0);