public async Task <ActionResult> StampTextsToPDF([FromBody] StampSimple stampSimple)
{
Debug.WriteLine(stampSimple);
var buzz = new StampWatermarkText();
var newPDF = await buzz.ManipulatePdf(stampSimple);
return(File(newPDF, "application/pdf", stampSimple.FileName));
}
public Task <byte[]> ManipulatePdf(
StampSimple fileSource)
{
using MemoryStream pdfDest = new();
using MemoryStream pdfStream = new(fileSource.ImageSource);
var pdfDoc = new PdfDocument(new PdfReader(pdfStream), new PdfWriter(pdfDest));
var doc = new Document(pdfDoc);
foreach (TextProperties text in fileSource.Texts)
{
var font = PdfFontFactory.CreateFont(FontProgramFactory.CreateFont(text.FontName));
iText.Kernel.Colors.Color fontColor = iText.Kernel.Colors.ColorConstants.CYAN;
switch (text.Color)
{
case "WHITE": fontColor = iText.Kernel.Colors.ColorConstants.WHITE; break;
case "BLACK": fontColor = iText.Kernel.Colors.ColorConstants.BLACK; break;
case "BLUE": fontColor = iText.Kernel.Colors.ColorConstants.BLUE; break;
case "DARKGRAY": fontColor = iText.Kernel.Colors.ColorConstants.DARK_GRAY; break;
case "GRAY": fontColor = iText.Kernel.Colors.ColorConstants.GRAY; break;
case "GREEN": fontColor = iText.Kernel.Colors.ColorConstants.GREEN; break;
case "MAGENTA": fontColor = iText.Kernel.Colors.ColorConstants.MAGENTA; break;
case "ORANGE": fontColor = iText.Kernel.Colors.ColorConstants.ORANGE; break;
case "PINK": fontColor = iText.Kernel.Colors.ColorConstants.PINK; break;
case "RED": fontColor = iText.Kernel.Colors.ColorConstants.RED; break;
case "YELLOW": fontColor = iText.Kernel.Colors.ColorConstants.YELLOW; break;
}
var paragraph = new Paragraph(text.Text).SetFont(font).SetFontSize(text.FontSize).SetFontColor(fontColor);
var gs1 = new PdfExtGState().SetFillOpacity(text.Opacity);
for (int i = 1; i <= pdfDoc.GetNumberOfPages(); i++)
{
PdfPage pdfPage = pdfDoc.GetPage(i);
Rectangle pageSize = pdfPage.GetPageSize();
float x = (pageSize.GetLeft() + pageSize.GetRight()) / 2;
float y = (pageSize.GetTop() + pageSize.GetBottom()) / 2;
var over = new PdfCanvas(pdfPage);
over.SaveState();
over.SetExtGState(gs1);
doc.ShowTextAligned(paragraph, text.PosX, text.PosY, i, TextAlignment.CENTER, VerticalAlignment.TOP, text.Radio);
over.RestoreState();
}
}
doc.Close();
return(Task.FromResult(pdfDest.ToArray()));
}
