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InsertSegments Method

Summary
Applies the input Segments, compresses it, and inserts the image in the PDF file. This is provided for advanced usage.

Syntax
C#
C++/CLI
Python
def InsertSegments(self,image,] segmentInfo,isThereBackGround,backgroundColor): 

Parameters

image
Image to be inserted in the PDF file.

segmentInfo
Contains information about all of the segments. PdfCompressorSegmentsInfo

isThereBackGround
Determines whether to use the average backgroundColor for all segments with background type or to use each color of each background segment.

backgroundColor
Average background color, to be used for all backgrounds segments if  isThereBackGround is true.

Remarks

For more information, refer to Creating a Compressed PDF File.

Example
C#
using Leadtools; 
using Leadtools.PdfCompressor; 
using Leadtools.Codecs; 
 
 
public void pdfCompressor_SegmentImage_MrcSegmentsDocument(object sender, PdfCompressorSegmentImageEventArgs e) 
{ 
   //This will prevent addition to any segment with type background  
   if (e.Segment.Type == SegmentTypeFlags.Background) 
      e.Cancel = true; 
   else 
      e.Cancel = false; 
} 
 
public void PdfCompressorExample_MrcSegmentsDocument() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "MRCSegmentation.mrc")); 
 
   PdfCompressorEngine pdfCompressor = new PdfCompressorEngine(); 
   PdfCompressorCompressionTypes compressionTypes = new PdfCompressorCompressionTypes(); 
 
   //Sets compression types needed for each segment 
   compressionTypes.Comp1Bit = PdfCompressor1BitCompression.Zip1Bit; 
   compressionTypes.Comp2Bit = PdfCompressor2BitCompression.Lzw2Bit; 
   compressionTypes.CompPicture = PdfCompressorPictureCompression.JpgPic; 
   compressionTypes.QFactor = 2; 
 
   //Flags for used compression types should be set 
   compressionTypes.Flags = EnabledCompressionsFlags.EnableOneBit | 
                            EnabledCompressionsFlags.EnableTwoBit | 
                            EnabledCompressionsFlags.EnablePicture; 
 
   pdfCompressor.SetCompression(compressionTypes); 
 
 
   PdfCompressorSegmentsInfo[] segmentInfo = new PdfCompressorSegmentsInfo[2]; 
   segmentInfo[0] = new PdfCompressorSegmentsInfo(); 
   segmentInfo[1] = new PdfCompressorSegmentsInfo(); 
   pdfCompressor.SegmentImage += new EventHandler<PdfCompressorSegmentImageEventArgs>(pdfCompressor_SegmentImage_MrcSegmentsDocument); 
   segmentInfo[0].Rectangle = new LeadRect(0, 0, 100, 100); 
   segmentInfo[0].Type = SegmentTypeFlags.Background; 
   segmentInfo[0].ValidColors = 1; 
   segmentInfo[0].Colors[0] = new RasterColor(0, 0, 0); 
 
   segmentInfo[1].Rectangle = new LeadRect(100, 100, 200, 200); 
   segmentInfo[1].Type = SegmentTypeFlags.Gray; 
   segmentInfo[1].ValidColors = 1; 
   segmentInfo[1].Colors[0] = new RasterColor(255, 255, 255); 
 
 
   pdfCompressor.InsertSegments(image, segmentInfo, false, new RasterColor(0, 0, 0)); 
   pdfCompressor.Write(Path.Combine(LEAD_VARS.ImagesDir, "Out_Image.pdf")); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 23.0.2024.2.29
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Leadtools.PdfCompressor Assembly

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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.