static void Main()
{
#region Create PDF
Console.WriteLine("Creating a PDF from scratch...");
PdfPage page;
XFont font;
using (var document = new PdfDocument())
{
document.Info.Title = "Created with PDFsharp";
// Create an empty page
page = document.AddPage();
// Get an XGraphics object for drawing
var gfx = XGraphics.FromPdfPage(page);
// Create a font
//font = new XFont("Courier", 20, XFontStyle.BoldItalic);
font = XFont.Default(20); // this should short-cut all the loading and caching, just let the PDF renderer guess
// Draw the text
gfx.DrawString("Hello, World! ©®£¥§", font, XBrushes.Black, // the end characters aren't in the fall-back font
new XRect(0, 0, page.Width, page.Height),
XStringFormats.Center);
Console.WriteLine("Saving...");
// Save the document...
const string filename = "HelloWorld.pdf";
document.Save(filename);
}
#endregion
#region Open, interpret, and edit an existing PDF
Console.WriteLine("Trying to open an existing PDF");
var sw = new Stopwatch();
sw.Start();
var targetFile = "finland";
using (var existing = PdfReader.Open($"{targetFile}.pdf"))
{
var form = existing.AcroForm;
if (form == null)
{
Console.WriteLine("No form found");
}
else
{
Console.WriteLine($"Found {form.Fields.Count} form fields");
foreach (var afName in form.Fields.Names)
{
var field = form.Fields[afName];
var pageNum = 0;
var maybePage = field?.GetPage(out pageNum);
Console.WriteLine($"Field def for page {pageNum} / {(maybePage==null?"not found":"found")}:");
LogPdfItem(field);
}
}
Console.WriteLine($"Found {existing.FullPath}: {existing.Pages.Count} pages");
int pageNumber = 0;
foreach (var ePage in existing.Pages)
{
pageNumber++;
ExtractImages(ePage);
var bits = ePage !.Contents.ToList();
foreach (var item in bits)
{
Console.WriteLine("------------");
LogPdfItem(item);
}
Console.WriteLine("==================================================");
// Try recovering some of the page to an image (proper PDF rendering)
AttemptToRenderPage(ePage, pageNumber); // TODO: implement properly. This is *REALLY* not working yet
using (var g = XGraphics.FromPdfPage(ePage))
{
g.DrawString("Hello, World!", font, XBrushes.Black,
new XRect(0, 0, page.Width, page.Height),
XStringFormats.Center);
}
}
existing.Save($"{targetFile}-edited.pdf");
}
sw.Stop();
Console.WriteLine($"Opening editing and writing PDF took {sw.Elapsed}");
#endregion
#region Concatenate two existing PDFs into a new document
Console.WriteLine("Trying to concat documents");
for (int i = 1; i <= 3; i++)
{
MakeSmallDoc(font, $"_concat_src_{i}.pdf");
}
using (var concatOut = new PdfDocument())
{
concatOut.Info.Title = "Joined with PdfSharpStd";
for (int i = 1; i <= 3; i++)
{
Console.WriteLine($" Reading document {i}");
using (var srcDoc = PdfReader.Open($"_concat_src_{i}.pdf", PdfDocumentOpenMode.Import)) // Must use import mode to copy pages across
{
var p = 0;
foreach (var pdfPage in srcDoc.Pages)
{
p++;
if (pdfPage is null)
{
continue;
}
concatOut.AddPage(pdfPage);
Console.WriteLine($" copied page {p}");
}
}
}
Console.WriteLine(" Saving result");
concatOut.Save("Concatenated.pdf");
}
#endregion
#region Read-back a file made from a concatenated set of sources
Console.WriteLine("Trying to read previously merged pdf");
using (var concatSrc = PdfReader.Open("Concatenated.pdf"))
{
Console.WriteLine($"Concat doc has {concatSrc.Pages.Count} pages");
}
#endregion
Console.WriteLine("Done.");
}