private byte[] ManipulatePdf(PDFQRConfiguration settings)
{
using var writer = new MemoryStream();
var pdfDoc = new PdfDocument(new PdfWriter(writer));
var doc = new Document(pdfDoc, iText.Kernel.Geom.PageSize.A4);
doc.SetTopMargin(settings.PageMarginTop);
doc.SetLeftMargin(settings.PageMarginLeft);
doc.SetBottomMargin(settings.PageMarginBottom);
doc.SetRightMargin(settings.PageMarginRight);
var table = new Table(UnitValue.CreatePercentArray(settings.Columns)).UseAllAvailableWidth();
for (long i = settings.OffsetIter; i < settings.OffsetIter + settings.Count; i += settings.Increment)
{
if (settings.Type == "BarCode")
{
table.AddCell(CreateBarcode($"{i + settings.OffsetBranch}", pdfDoc, settings));
}
else
{
table.AddCell(CreateQRCode($"{i + settings.OffsetBranch}", pdfDoc, settings));
}
}
doc.Add(table);
doc.SetMargins(settings.PageMarginTop, settings.PageMarginRight, settings.PageMarginBottom, settings.PageMarginLeft);
doc.Close();
return(writer.ToArray());
}
private Cell CreateQRCode(string code, PdfDocument pdfDoc, PDFQRConfiguration settings)
{
Cell ret = new Cell();
Table table = new Table(UnitValue.CreatePercentArray(2)).UseAllAvailableWidth();
table.SetBorderCollapse(BorderCollapsePropertyValue.COLLAPSE);
table.AddCell(MakeCell(code, pdfDoc, settings));
table.AddCell(MakeCell(code, pdfDoc, settings));
ret.Add(table);
ret.SetBorder(new iText.Layout.Borders.DottedBorder(iText.Kernel.Colors.ColorConstants.LIGHT_GRAY, 1));
return(ret);
}
private Cell MakeCell(string code, PdfDocument pdfDoc, PDFQRConfiguration settings)
{
Cell cell = new Cell();
cell.SetKeepTogether(true);
cell.SetBorder(iText.Layout.Borders.Border.NO_BORDER);
cell.SetHorizontalAlignment(HorizontalAlignment.CENTER);
cell.SetVerticalAlignment(VerticalAlignment.MIDDLE);
Paragraph p = new Paragraph(settings.Prefix);
p.SetTextAlignment(TextAlignment.CENTER);
p.SetVerticalAlignment(VerticalAlignment.BOTTOM);
p.SetMargin(0);
p.SetPadding(0);
cell.Add(p);
BarcodeQRCode barcode = new BarcodeQRCode($"{settings.Prefix}{code}");
PdfFormXObject barcodeObject = barcode.CreateFormXObject(pdfDoc);
// Create barcode object to put it to the cell as image
var image = new Image(barcodeObject);
image.SetMargins(0, 0, 0, 0);
image.Scale(settings.Scale, settings.Scale);
image.SetPadding(0);
cell.Add(image);
cell.SetPaddingTop(settings.CellPaddingTop);
cell.SetPaddingRight(settings.CellPaddingRight);
cell.SetPaddingBottom(settings.CellPaddingBottom);
cell.SetPaddingLeft(settings.CellPaddingLeft);
cell.SetBorder(iText.Layout.Borders.Border.NO_BORDER);
p = new Paragraph(code);
p.SetTextAlignment(TextAlignment.CENTER);
p.SetVerticalAlignment(VerticalAlignment.TOP);
p.SetMargin(0);
p.SetPadding(0);
cell.Add(p);
return(cell);
}
private Cell CreateBarcode(string code, PdfDocument pdfDoc, PDFQRConfiguration settings)
{
var barcode = new Barcode39(pdfDoc);
barcode.SetCodeType(Barcode39.ALIGN_CENTER);
barcode.SetCode(code);
barcode.SetBarHeight(settings.Height);
barcode.FitWidth(settings.Width);
// Create barcode object to put it to the cell as image
var barcodeObject = barcode.CreateFormXObject(null, null, pdfDoc);
var cell = new Cell().Add(new Image(barcodeObject));
cell.SetPaddingTop(settings.CellPaddingTop);
cell.SetPaddingRight(settings.CellPaddingRight);
cell.SetPaddingBottom(settings.CellPaddingBottom);
cell.SetPaddingLeft(settings.CellPaddingLeft);
cell.SetBorder(new iText.Layout.Borders.DottedBorder(iText.Kernel.Colors.ColorConstants.LIGHT_GRAY, 1));
return(cell);
}
public async Task <IActionResult> GeneratePDF([FromBody] PDFQRConfiguration configuration)
{
try
{
var baseConfig = new PDFQRConfiguration();
if (configuration.CellPaddingBottom == default)
{
configuration.CellPaddingBottom = baseConfig.CellPaddingBottom;
}
if (configuration.CellPaddingLeft == default)
{
configuration.CellPaddingLeft = baseConfig.CellPaddingLeft;
}
if (configuration.CellPaddingRight == default)
{
configuration.CellPaddingRight = baseConfig.CellPaddingRight;
}
if (configuration.CellPaddingTop == default)
{
configuration.CellPaddingTop = baseConfig.CellPaddingTop;
}
if (configuration.Columns == default)
{
configuration.Columns = baseConfig.Columns;
}
if (configuration.Count == default)
{
configuration.Count = baseConfig.Count;
}
if (configuration.Height == default)
{
configuration.Height = baseConfig.Height;
}
if (configuration.OffsetBranch == default)
{
configuration.OffsetBranch = baseConfig.OffsetBranch;
}
if (configuration.OffsetIter == default)
{
configuration.OffsetIter = baseConfig.OffsetIter;
}
if (configuration.PageMarginBottom == default)
{
configuration.PageMarginBottom = baseConfig.PageMarginBottom;
}
if (configuration.PageMarginLeft == default)
{
configuration.PageMarginLeft = baseConfig.PageMarginLeft;
}
if (configuration.PageMarginRight == default)
{
configuration.PageMarginRight = baseConfig.PageMarginRight;
}
if (configuration.PageMarginTop == default)
{
configuration.PageMarginTop = baseConfig.PageMarginTop;
}
if (configuration.Prefix == default || configuration.Prefix == "string")
{
configuration.Prefix = baseConfig.Prefix;
}
if (configuration.Scale == default)
{
configuration.Scale = baseConfig.Scale;
}
if (configuration.Type == default)
{
configuration.Type = baseConfig.Type;
}
if (configuration.Width == default)
{
configuration.Width = baseConfig.Width;
}
if (configuration.Increment == default)
{
configuration.Increment = baseConfig.Increment;
}
if (configuration.TopTextSize == default)
{
configuration.TopTextSize = baseConfig.Increment;
}
if (configuration.BottomTextSize == default)
{
configuration.BottomTextSize = baseConfig.Increment;
}
if (configuration.Count > 100000)
{
throw new Exception("Limit has been reached");
}
return(File(ManipulatePdf(configuration), "application/pdf", $"qr-{configuration.Prefix}-{configuration.OffsetIter}-{configuration.Count}.pdf"));
}
catch (Exception exc)
{
return(BadRequest(new ProblemDetails()
{
Detail = exc.Message
}));
}
}
private Cell MakeCell(string code, PdfDocument pdfDoc, PDFQRConfiguration settings)
{
var cell = new Cell();
cell.SetKeepTogether(true);
cell.SetBorder(iText.Layout.Borders.Border.NO_BORDER);
cell.SetHorizontalAlignment(HorizontalAlignment.CENTER);
cell.SetVerticalAlignment(VerticalAlignment.MIDDLE);
if (settings.PrefixAboveQR)
{
var p = new Paragraph(settings.Prefix);
p.SetFontSize(settings.TopTextSize);
p.SetTextAlignment(TextAlignment.CENTER);
p.SetVerticalAlignment(VerticalAlignment.BOTTOM);
p.SetMargin(0);
p.SetPadding(0);
cell.Add(p);
}
var qrParam = new Dictionary <EncodeHintType, object>
{
[EncodeHintType.ERROR_CORRECTION] = ErrorCorrectionLevel.H,
[EncodeHintType.CHARACTER_SET] = "ASCII"
};
var codeInQR = "";
if (settings.IncludePrefixInQR)
{
codeInQR = $"{settings.Prefix}{code}";
}
else
{
codeInQR = $"{code}";
}
var barcode = new BarcodeQRCode(codeInQR, qrParam);
var barcodeObject = barcode.CreateFormXObject(pdfDoc);
// Create barcode object to put it to the cell as image
var image = new Image(barcodeObject);
image.SetMargins(0, 0, 0, 0);
image.Scale(settings.Scale, settings.Scale);
image.SetPadding(0);
cell.Add(image);
cell.SetPaddingTop(settings.CellPaddingTop);
cell.SetPaddingRight(settings.CellPaddingRight);
cell.SetPaddingBottom(settings.CellPaddingBottom);
cell.SetPaddingLeft(settings.CellPaddingLeft);
cell.SetBorder(iText.Layout.Borders.Border.NO_BORDER);
if (settings.PrefixAboveQR)
{
var p = new Paragraph(code);
p.SetFontSize(settings.BottomTextSize);
p.SetTextAlignment(TextAlignment.CENTER);
p.SetVerticalAlignment(VerticalAlignment.TOP);
p.SetMargin(0);
p.SetPadding(0);
cell.Add(p);
}
else
{
var p = new Paragraph($"{settings.Prefix}{code}");
p.SetFontSize(settings.BottomTextSize);
p.SetTextAlignment(TextAlignment.CENTER);
p.SetVerticalAlignment(VerticalAlignment.TOP);
p.SetMargin(0);
p.SetPadding(0);
cell.Add(p);
}
return(cell);
}
