public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var resources = (Resources)item;
writer.WriteDictionaryStart();
if (resources.Fonts?.Count > 0)
{
writer.WriteRaw("Font", PdfTokens.StartDictionary);
for (var i = 0; i < resources.Fonts.Count; i++)
{
var fontRef = references[resources.Fonts[i]];
writer.WriteReference($"{resources.Fonts[i].Id.ToString().Replace("-", "")}", fontRef);
}
writer.WriteLine(PdfTokens.EndDictionary);
}
if (resources.Images?.Count > 0)
{
writer.WriteRaw("XObject", PdfTokens.StartDictionary);
for (var i = 0; i < resources.Images.Count; i++)
{
var imgRef = references[resources.Images[i]];
writer.WriteReference($"{resources.Images[i].Id.ToString().Replace("-", "")}", imgRef);
}
writer.WriteLine(PdfTokens.EndDictionary);
}
writer.WriteDictionaryEnd();
}
public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var trailer = (PdfTrailer)item;
writer.WriteDictionaryStart();
writer.WriteRaw("Size", trailer.Size);
writer.WriteReference("Root", trailer.Root);
writer.WriteDictionaryEnd();
}
public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var catalog = (Catalog)item;
writer.WriteDictionaryStart();
writer.WriteType(catalog.Type);
writer.WriteReference(nameof(catalog.Pages), references[catalog.Pages]);
writer.WriteDictionaryEnd();
}
public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var font = (Font)item;
writer.WriteDictionaryStart();
writer.WriteType(font.Type);
writer.WriteSubtype(font.Subtype.ToString());
writer.WriteName("BaseFont", font.BaseFont);
writer.WriteDictionaryEnd();
}
public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var pageNode = (PageNode)item;
writer.WriteDictionaryStart();
writer.WriteType(pageNode.Type);
writer.WriteRaw(nameof(pageNode.Count), pageNode.Count);
writer.WriteReferences(nameof(pageNode.Kids), pageNode.Kids.Select(k => references[k]));
writer.WriteDictionaryEnd();
}
public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var xrefTable = (XrefTable)item;
writer.WriteLine($"0 {xrefTable.Entries.Count}");
foreach (var xref in xrefTable.Entries)
{
var offset = xref.Offset.ToString().PadLeft(10, '0');
var generation = xref.Reference.Generation.ToString().PadLeft(5, '0');
var free = xref.Free ? "f" : "n";
writer.WriteLine($"{offset} {generation} {free}");
}
}
public SerializationResult SerializeTree(PdfWriter writer, IPdfObject root)
{
var references = new List <Guid>();
var indRefs = new IndirectObjectDictionary();
// Add empty GUID to represent the "free" object
references.Add(Guid.Empty);
var offsets = new List <int>();
// need to visit all nodes to reserve references for each node
var nodesToSerialize = new ConcurrentQueue <IPdfObject>();
var nodesToVisit = new Stack <IPdfObject>();
nodesToVisit.Push(root);
while (nodesToVisit.Count > 0)
{
var node = nodesToVisit.Pop();
if (node == null || indRefs.Contains(node))
{
continue;
}
nodesToVisit.PushRange(node.GetChildren());
indRefs.Add(node);
nodesToSerialize.Enqueue(node);
}
while (nodesToSerialize.TryDequeue(out IPdfObject node))
{
offsets.Add((int)writer.Position);
writer.WriteLine($"{indRefs[node].Identifier} 0 {PdfTokens.StartObject}");
SerdesFactory.GetFor(node).Serialize(writer, node, indRefs);
writer.WriteLine(PdfTokens.EndObject);
}
return(new SerializationResult()
{
Offsets = offsets,
References = indRefs
});
}
public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var img = (ImageExternalObject)item;
writer.WriteDictionaryStart();
writer.WriteType(PdfObjectType.XObject);
writer.WriteSubtype(img.Subtype.ToString());
writer.WriteRaw(nameof(img.Width), img.Width);
writer.WriteRaw(nameof(img.Height), img.Height);
writer.WriteName(nameof(img.ColorSpace), new Name(img.ColorSpace.ToString()));
writer.WriteRaw(nameof(img.BitsPerComponent), img.BitsPerComponent);
writer.WriteRaw("Length", img.Data.Length);
writer.WriteDictionaryEnd();
writer.WriteLine(PdfTokens.Stream.Start);
writer.Write(img.Data);
writer.WriteLine();
writer.WriteLine(PdfTokens.Stream.End);
}
public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var page = (Page)item;
writer.WriteDictionaryStart();
writer.WriteType(page.Type);
writer.WriteReference(nameof(page.Parent), references[page.Parent]);
writer.WriteRaw(nameof(page.Resources), string.Empty);
SerdesFactory.GetFor(page.Resources).Serialize(writer, page.Resources, references);
writer.WriteRaw(nameof(page.MediaBox), string.Empty);
SerdesFactory.GetFor(page.MediaBox).Serialize(writer, page.MediaBox, references);
writer.WriteReference(nameof(page.Contents), references[page.Contents]);
writer.WriteDictionaryEnd();
}
public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var contentStream = (ContentStream)item;
var streamData = new StringBuilder();
foreach (var image in contentStream.ImageContent)
{
streamData.AppendLine(PdfTokens.Graphics.StateOperators.Save);
// move/scale cm
var xform = Transformer.GetTransform(new Rectangle(0, 0, 1), image.Rectangle);
streamData.AppendLine($"{xform.M11} {xform.M12} {xform.M21} {xform.M22} {xform.M31} {xform.M32} {PdfTokens.Graphics.TransformOperators.ModifyTransformationMatrix}");
// Do image
streamData.AppendLine($"/{image.Image.Id.ToString().Replace("-", "")} {PdfTokens.Graphics.ImageOperators.Draw}");
streamData.AppendLine(PdfTokens.Graphics.StateOperators.Restore);
}
foreach (var text in contentStream.TextContent)
{
streamData.AppendLine(PdfTokens.Text.Begin);
streamData.AppendLine($"{text.FillColor.Red} {text.FillColor.Green} {text.FillColor.Blue} {PdfTokens.Graphics.ColorOperators.SetFillRGB}");
streamData.AppendLine($"/{text.Font.Id.ToString().Replace("-", "")} {text.FontSize} {PdfTokens.Text.StateOperators.FontSize}");
streamData.AppendLine($"{text.Rectangle.X} {text.Rectangle.Y} {PdfTokens.Text.PositioningOperators.MoveFromCurrent}");
streamData.AppendLine($"( {text.Text} ) {PdfTokens.Text.ShowingOperators.Show}");
streamData.AppendLine(PdfTokens.Text.End);
}
var streamContents = streamData.ToString();
writer.WriteDictionaryStart();
writer.WriteRaw("Length", streamContents.Length);
writer.WriteDictionaryEnd();
writer.WriteLine(PdfTokens.Stream.Start);
writer.Write(streamContents);
writer.WriteLine(PdfTokens.Stream.End);
}
public void Serialize(PdfWriter writer, object item, IndirectObjectDictionary references)
{
var rect = (Rectangle)item;
writer.Write($"[{rect.X} {rect.Y} {rect.Width} {rect.Height}]");
}
