SvgDocument Constructor

C#
Visual Basic
Java
Objective-C
C++

protected SvgDocument( 
   SerializationInfo info,
   StreamingContext context
)

'Declaration

Protected Function New( _
   ByVal info As SerializationInfo, _
   ByVal context As StreamingContext _
)

'Usage

Dim info As SerializationInfo
Dim context As StreamingContext
 
Dim instance As New SvgDocument(info, context)

protected:
SvgDocument( 
   SerializationInfo^ info,
   StreamingContext context
)

Parameters

info: The data needed to serialize or deserialize an object.
context: The source and destination of a given serialized stream.

The SvgDocument class supports standard .NET serialization. Serialization of a SvgDocument is the process of converting the state of a Leadtools.RasterImage object into a form that can be persisted or transported. The complement of serialization is deserialization, which converts a stream into an Leadtools.RasterImage object. Together, these processes allow the image data to be easily stored and transferred.

When you serialize a SvgDocument object, all the data inside the object is saved. The SvgDocument can be reconstructed back to its original state from the stream.

This example will show how to serialize and deserialize a SVG document.

C#
Visual Basic
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Drawing
Imports Leadtools.Forms.DocumentWriters
Imports Leadtools.Svg

Public Shared Sub SvgDocumentSerializationExample()
   Dim document As SvgDocument = Nothing
   ' Load a page from a document file as SVG
   Dim srcFileName As String = Path.Combine(Common.ImagesPath.Path, "Leadtools.pdf")
   Using codecs As New RasterCodecs()
      ' Set 300 as the default value for loading document files
      codecs.Options.RasterizeDocument.Load.Resolution = 300

      document = DirectCast(codecs.LoadSvg(srcFileName, 1, Nothing), SvgDocument)
   End Using

   ' Prepare it
   If Not document.IsFlat Then
      document.Flat(Nothing)
   End If
   If Not document.Bounds.IsValid Then
      document.CalculateBounds(False)
   End If

   ' Show its properties
   Console.WriteLine("Before serialization")
   Console.WriteLine("Bounds: " + document.Bounds.Bounds.ToString())
   Console.WriteLine("Resolution: " + document.Bounds.Resolution.ToString())

   ' Serialize (save) it to a stream
   Dim stream As New MemoryStream()
   Dim formatter As New BinaryFormatter()
   formatter.Serialize(stream, document)
   stream.Position = 0

   ' Get rid of the document
   document.Dispose()

   ' Now de-serailize (load) it back from the stream and show its properties
   document = DirectCast(formatter.Deserialize(stream), SvgDocument)
   Console.WriteLine("After de-serialization")
   Console.WriteLine("Bounds: " + document.Bounds.Bounds.ToString())
   Console.WriteLine("Resolution: " + document.Bounds.Resolution.ToString())

   document.Dispose()
End Sub

using Leadtools;
using Leadtools.Codecs;
using Leadtools.Drawing;
using Leadtools.Forms.DocumentWriters;
using Leadtools.Svg;

      
public void SvgDocumentSerializationExample()
{
   SvgDocument document = null;
   // Load a page from a document file as SVG
   string srcFileName = Path.Combine(ImagesPath.Path, "Leadtools.pdf");

   using (var codecs = new RasterCodecs())
   {
      // Set 300 as the default value for loading document files
      codecs.Options.RasterizeDocument.Load.Resolution = 300;

      document = codecs.LoadSvg(srcFileName, 1, null) as SvgDocument;
   }

   // Prepare it
   if (!document.IsFlat)
      document.Flat(null);
   if (!document.Bounds.IsValid)
      document.CalculateBounds(false);

   // Show its properties
   Console.WriteLine("Before serialization");
   Console.WriteLine("Bounds: " + document.Bounds.Bounds);
   Console.WriteLine("Resolution: " + document.Bounds.Resolution);

   // Serialize (save) it to a stream
   var stream = new MemoryStream();
   var formatter = new BinaryFormatter();
   formatter.Serialize(stream, document);
   stream.Position = 0;

   // Get rid of the document
   document.Dispose();

   // Now de-serailize (load) it back from the stream and show its properties
   document = formatter.Deserialize(stream) as SvgDocument;
   Console.WriteLine("After de-serialization");
   Console.WriteLine("Bounds: " + document.Bounds.Bounds);
   Console.WriteLine("Resolution: " + document.Bounds.Resolution);

   document.Dispose();
}

Target Platforms

Reference

SvgDocument Class
SvgDocument Members

SvgDocument Constructor (SvgDocument)

Parameters

Reference