public void ManipulatePdf(
string pdfSrc,
string pdfDest,
string text,
string imageName,
float fontSize,
string fontName)
{
MemoryStream pdfStream = new(File.ReadAllBytes(pdfSrc));
PdfDocument pdfDoc = new(new PdfReader(pdfStream), new PdfWriter(pdfDest));
Document doc = new(pdfDoc);
PdfFont font = PdfFontFactory.CreateFont(FontProgramFactory.CreateFont(fontName));
Paragraph paragraph = new Paragraph(text).SetFont(font).SetFontSize(fontSize).SetFontColor(iText.Kernel.Colors.ColorConstants.CYAN);
//DrawText(text, new Font(StandardFonts.HELVETICA, 14.0f), System.Drawing.Color.Aqua, 500, IMG + imageName);
//ImageData img = ImageDataFactory.Create(IMG + imageName);
//float w = img.GetWidth();
//float h = img.GetHeight();
float radio = 20.2f;
PdfExtGState gs1 = new PdfExtGState().SetFillOpacity(0.3f);
// Implement transformation matrix usage in order to scale image
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;
PdfCanvas over = new PdfCanvas(pdfPage);
over.SaveState();
over.SetExtGState(gs1);
//if (i % 2 == 1)
//{
// doc.ShowTextAligned(paragraph, x, y-200, i, TextAlignment.CENTER, VerticalAlignment.TOP, 10);
// doc.ShowTextAligned(paragraph, x, y, i, TextAlignment.CENTER, VerticalAlignment.TOP, 10);
// }
// else
//{
doc.ShowTextAligned(paragraph, x - 200, y + 160, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
doc.ShowTextAligned(paragraph, x - 100, y + 80, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
doc.ShowTextAligned(paragraph, x, y, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
doc.ShowTextAligned(paragraph, x + 100, y - 80, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
doc.ShowTextAligned(paragraph, x + 200, y - 160, i, TextAlignment.CENTER, VerticalAlignment.TOP, radio);
//over.AddImageWithTransformationMatrix(img, w, 0, 0, h, x - (w / 2), y - (h / 80), true);
//over.AddImageWithTransformationMatrix(img, w, 0, 0, h, x - (w / 2), y - (h / 60), true);
//over.AddImageWithTransformationMatrix(img, w, 0, 0, h, x - (w / 2), y - (h / 40), true);
//over.AddImageWithTransformationMatrix(img, w, 0, 0, h, x - (w / 2), y - (h / 2), true);
//}
over.RestoreState();
}
doc.Close();
}
public void HandleEvent(Event @event)
{
PdfDocumentEvent docEvent = (PdfDocumentEvent)@event;
PdfPage page = docEvent.GetPage();
int pageNumber = docEvent.GetDocument().GetNumberOfPages();
var bgColor = ((SolidColorBrush)Pages[pageNumber - 1].Canvas.Background).Color;
var pageColor = new iText.Kernel.Colors.DeviceRgb(
Convert.ToInt32(bgColor.R),
Convert.ToInt32(bgColor.G),
Convert.ToInt32(bgColor.B)
);
PdfCanvas canvas = new PdfCanvas(page);
iText.Kernel.Geom.Rectangle rect = page.GetPageSize();
canvas.SaveState()
.SetFillColor(pageColor)
.Rectangle(rect.GetLeft(), rect.GetBottom(), rect.GetWidth(), rect.GetHeight())
.FillStroke()
.RestoreState();
}