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LoadFromFile Method

Summary

Creates an SvgDocument object from an SVG file on disk.

Syntax
C#
VB
Java
Objective-C
C++
public static SvgDocument LoadFromFile( 
   string fileName, 
   SvgLoadOptions options 
) 
Public Shared Function LoadFromFile( _ 
   ByVal fileName As String, _ 
   ByVal options As SvgLoadOptions _ 
) As SvgDocument 
- (nullable instancetype)initWithFile:(NSString *)file 
                              options:(nullable LTSvgLoadOptions *)options 
                                error:(NSError **)error 
public static SvgDocument loadFromFile(String fileName, SvgLoadOptions options) 
public: 
static SvgDocument^ LoadFromFile(  
   String^ fileName, 
   SvgLoadOptions^ options 
)  

Parameters

fileName
Path to the SVG file on disk

options
Options to use during load. If this parameter is null, then a default SvgLoadOptions object will be used.

Return Value

The SvgDocument object this method creates.

Remarks

To get and set information about the document's bounds and resolution, refer to SVG Size, Bounds and Flat.

Example

This example will use Leadtools.Document.Writer.DocumentWriter to create a PDF file from SVG files.

C#
VB
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Drawing; 
using Leadtools.Forms.DocumentWriters; 
using Leadtools.Svg; 
using LeadtoolsExamples.Common; 
 
public void SvgLoadFromFileExample() 
{ 
   // Create the SVG pages we will be using 
   string srcFileName = Path.Combine(ImagesPath.Path, "Leadtools.doc"); 
   string dstFileName = Path.Combine(ImagesPath.Path, "Example.pdf"); 
   string outDir = Path.Combine(ImagesPath.Path, "TempSvgPages"); 
   if (!Directory.Exists(outDir)) 
      Directory.CreateDirectory(outDir); 
 
   int pageCount = CreateSvgPages(srcFileName, outDir); 
 
   // Create a PDF document using Document Writer 
   var documentWriter = new DocumentWriter(); 
   documentWriter.BeginDocument(dstFileName, DocumentFormat.Pdf); 
 
   string svgPageTemplateName = Path.Combine(outDir, "Page{0}.svg"); 
   for (int pageNumber = 1; pageNumber <= pageCount; pageNumber++) 
   { 
      // Load this SVG 
      string pageFileName = string.Format(svgPageTemplateName, pageNumber); 
      Console.WriteLine("Loading {0}", pageFileName); 
      using (SvgDocument svgDocument = SvgDocument.LoadFromFile(pageFileName, null)) 
      { 
         // Check if we need to flat it 
         if (!svgDocument.IsFlat) 
            svgDocument.Flat(null); 
         if (!svgDocument.Bounds.IsValid) 
            svgDocument.CalculateBounds(false); 
 
         // Add it to the document writer 
         Console.WriteLine("Adding ..."); 
         DocumentSvgPage svgPage = new DocumentSvgPage(); 
         svgPage.SvgDocument = svgDocument; 
         documentWriter.AddPage(svgPage); 
      } 
   } 
 
   // Finish up 
   Console.WriteLine("Finishing ..."); 
   documentWriter.EndDocument(); 
} 
 
private static int CreateSvgPages(string srcFileName, string outDir) 
{ 
   // Extract all the pages from the source file as SVG 
   using (var codecs = new RasterCodecs()) 
   { 
      // Set 300 as the default value for loading document files 
      codecs.Options.RasterizeDocument.Load.Resolution = 300; 
 
      // Get all the files from input directory 
      int pageCount = codecs.GetTotalPages(srcFileName); 
      for (int pageNumber = 1; pageNumber <= pageCount; pageNumber++) 
      { 
         using (SvgDocument svgDocument = codecs.LoadSvg(srcFileName, pageNumber, null) as SvgDocument) 
         { 
            // Save it to disk 
            string dstFileName = Path.Combine(outDir, Path.Combine(string.Format("Page{0}.svg", pageNumber))); 
            Console.WriteLine("Saving to {0}", dstFileName); 
            svgDocument.SaveToFile(dstFileName, null); 
         } 
      } 
 
      return pageCount; 
   } 
} 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Drawing 
Imports Leadtools.Forms.DocumentWriters 
Imports Leadtools.Svg 
 
Public Shared Sub SvgLoadFromFileExample() 
   ' Create the SVG pages we will be using 
   Dim srcFileName As String = Path.Combine(Common.ImagesPath.Path, "Leadtools.doc") 
   Dim dstFileName As String = Path.Combine(Common.ImagesPath.Path, "Example.pdf") 
   Dim outDir As String = Path.Combine(Common.ImagesPath.Path, "TempSvgPages") 
   If Not Directory.Exists(outDir) Then 
      Directory.CreateDirectory(outDir) 
   End If 
 
   Dim pageCount As Integer = CreateSvgPages(srcFileName, outDir) 
 
   ' Create a PDF document using Document Writer 
   Dim documentWriter As New DocumentWriter() 
   documentWriter.BeginDocument(dstFileName, DocumentFormat.Pdf) 
 
   Dim svgPageTemplateName As String = Path.Combine(outDir, "Page{0}.svg") 
   For pageNumber As Integer = 1 To pageCount 
      ' Load this SVG 
      Dim pageFileName As String = String.Format(svgPageTemplateName, pageNumber) 
      Console.WriteLine("Loading {0}", pageFileName) 
      Using svgDocument As SvgDocument = svgDocument.LoadFromFile(pageFileName, Nothing) 
         ' Check if we need to flat it 
         If Not svgDocument.IsFlat Then 
            svgDocument.Flat(Nothing) 
         End If 
         If Not svgDocument.Bounds.IsValid Then 
            svgDocument.CalculateBounds(False) 
         End If 
 
         ' Add it to the document writer 
         Console.WriteLine("Adding ...") 
         Dim svgPage As New DocumentSvgPage() 
         svgPage.SvgDocument = svgDocument 
         documentWriter.AddPage(svgPage) 
      End Using 
   Next 
 
   ' Finish up 
   Console.WriteLine("Finishing ...") 
   documentWriter.EndDocument() 
End Sub 
 
Private Shared Function CreateSvgPages(srcFileName As String, outDir As String) As Integer 
   ' Extract all the pages from the source file as SVG 
   Using codecs As New RasterCodecs() 
      ' Set 300 as the default value for loading document files 
      codecs.Options.RasterizeDocument.Load.Resolution = 300 
 
      ' Get all the files from input directory 
      Dim pageCount As Integer = codecs.GetTotalPages(srcFileName) 
      For pageNumber As Integer = 1 To pageCount 
         Using svgDocument As SvgDocument = DirectCast(codecs.LoadSvg(srcFileName, pageNumber, Nothing), SvgDocument) 
            ' Save it to disk 
            Dim dstFileName As String = Path.Combine(outDir, Path.Combine(String.Format("Page{0}.svg", pageNumber))) 
            Console.WriteLine("Saving to {0}", dstFileName) 
            svgDocument.SaveToFile(dstFileName, Nothing) 
         End Using 
      Next 
 
      Return pageCount 
   End Using 
End Function 

Requirements

Target Platforms

Help Version 20.0.2019.9.19
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Leadtools.Svg Assembly