/// <summary>
/// Main method for running the sample.
/// </summary>
public static SampleOutputInfo[] Run(Stream input)
{
// Load the input file.
PDFFixedDocument document = new PDFFixedDocument(input);
PDFConvertToGrayTransform grayTransform = new PDFConvertToGrayTransform();
PDFPageTransformer pageTransformer = new PDFPageTransformer(document.Pages[3]);
pageTransformer.ApplyTransform(grayTransform);
SampleOutputInfo[] output = new SampleOutputInfo[] { new SampleOutputInfo(document, "grayscaleconversion.pdf") };
return(output);
}
/// <summary>
/// Main method for running the sample.
/// </summary>
public static SampleOutputInfo[] Run(Stream input)
{
// Load the input file.
PDFFixedDocument document = new PDFFixedDocument(input);
PDFReplaceImageTransform replaceImageTransform = new PDFReplaceImageTransform();
replaceImageTransform.ReplaceImage += new EventHandler <PDFReplaceImageEventArgs>(HandleReplaceImage);
PDFPageTransformer pageTransformer = new PDFPageTransformer(document.Pages[2]);
pageTransformer.ApplyTransform(replaceImageTransform);
replaceImageTransform.ReplaceImage -= new EventHandler <PDFReplaceImageEventArgs>(HandleReplaceImage);
SampleOutputInfo[] output = new SampleOutputInfo[] { new SampleOutputInfo(document, "removereplaceimages.pdf") };
return(output);
}
private void PerformSeparation(string outputPdfFile, bool keepSeparation)
{
FileStream input = File.OpenRead(pdfFile);
PDFFixedDocument document = new PDFFixedDocument(input);
input.Close();
PDFPageTransformer pageTransformer = new PDFPageTransformer(document.Pages[0]);
PDFSeparateContentTransform sct = new PDFSeparateContentTransform(separationName, keepSeparation);
pageTransformer.ApplyTransform(sct);
using (FileStream output = File.Create(outputPdfFile))
{
document.Save(output);
output.Flush();
}
}
private static void SplitPagesWithUnusedResourcesRemoval()
{
using (FileStream fs = File.OpenRead("PDF4NET.Features.pdf"))
{
PDFFile sourceFile = new PDFFile(fs);
for (int i = 0; i < sourceFile.PageCount; i++)
{
PDFFixedDocument document = new PDFFixedDocument();
PDFPage page = sourceFile.ExtractPage(i);
RemoveUnusedResourcesTransform transform = new RemoveUnusedResourcesTransform();
PDFPageTransformer pageTransformer = new PDFPageTransformer(page);
pageTransformer.ApplyTransform(transform);
document.Pages.Add(page);
document.Save($"UnusedResourcesRemoved.Page.{i}.pdf");
}
}
}