public static void SetPageBackgroundColor(this PdfInfo pdfInfo, int pageNumber, BaseColor color = null)
{
if (color == null)
{
color = BaseColor.WHITE;
}
using (PdfReader reader = new PdfReader(pdfInfo.GetBytes()))
{
using (MemoryStream ms = new MemoryStream())
{
using (PdfStamper stamper = new PdfStamper(reader, ms))
{
PageInfo pageInfo = pdfInfo.GetPage(pageNumber);
Rectangle rectangle = new Rectangle(0, 0, Utilities.MillimetersToPoints(pageInfo.PageWidth),
Utilities.MillimetersToPoints(pageInfo.PageHeight), 0)
{
BackgroundColor = color
};
var cb = stamper.GetUnderContent(pageNumber);
cb.Rectangle(rectangle);
}
pdfInfo.UpdateBytes(ms.ToArray());
}
}
}
public static void Compress(this PdfInfo pdfInfo)
{
using (var reader = new PdfReader(pdfInfo.GetBytes()))
{
using (MemoryStream ms = new MemoryStream())
{
using (PdfStamper stamper = new PdfStamper(reader, ms))
{
stamper.Writer.CompressionLevel = 9;
int total = reader.NumberOfPages + 1;
for (int i = 1; i < total; i++)
{
reader.SetPageContent(i, reader.GetPageContent(i));
}
stamper.SetFullCompression();
stamper.FormFlattening = true;
stamper.AnnotationFlattening = true;
stamper.FreeTextFlattening = true;
reader.RemoveUnusedObjects();
}
pdfInfo.UpdateBytes(ms.ToArray());
}
}
}
public static PdfInfo CompressImage(this PdfInfo pdfInfo, ImageInfo image, IImageConverter converter)
{
byte[] convertedBytes = converter.Convert(image.ImageBytes);
//PdfImage newImage = PdfImage.GetInstance(convertedBytes);
//ImageCodecInfo encoderInfo = ImageCodecInfo.GetImageEncoders().First(i => i.MimeType == "image/png");
//ConvertToPng c = new ConvertToPng();
//NetImage netImage = c.Convert(image.ImageBytes);
//convertedBytes = System.IO.File.ReadAllBytes(@"x:\img.jpg");
Image newImage = Image.GetInstance(convertedBytes);
using (PdfReader reader = new PdfReader(pdfInfo.GetBytes()))
{
using (MemoryStream ms = new MemoryStream())
{
using (PdfStamper stamper = new PdfStamper(reader, ms))
{
PdfDictionary page = reader.GetPageN(image.PageNumber);
ObjectFinder objectFinder = new ObjectFinder(page);
PdfObject imgObject = objectFinder.FindObjectByGuid(image.ID);
if (imgObject != null)
{
PdfReader.KillIndirect(imgObject);
stamper.Writer.AddDirectImageSimple(newImage, (PRIndirectReference)imgObject);
}
}
pdfInfo.UpdateBytes(ms.ToArray());
}
}
return(pdfInfo);
}