WhiteLinesNumber Property

Summary

Gets or sets a value that indicates the minimum number of lines of white space above and below the barcode symbol.

Syntax

Objective-C

C++/CLI

Java

Python

public int WhiteLinesNumber { get; set; }

@property (nonatomic, assign) NSInteger whiteLinesNumber;

public int getWhiteLinesNumber() 
public void setWhiteLinesNumber(int value)

public: 
property int WhiteLinesNumber { 
   int get(); 
   void set (    int ); 
}

WhiteLinesNumber # get and set (OneDBarcodeReadOptions)

Property Value

An Int32 that indicates the minimum number of lines of white space above and below the barcode symbol to use when reading a barcode. Must be value greater than or equal to 0. The default value is 3.

Remarks

A barcode on an image usually has white space around it. This value defines the minimum number of white space lines (in pixels) that must exist around the barcode before it can be read. The default value of 3 means 3 pixels on the top and bottom of the barcode.

Change this value when the barcode is adjacent to another object on the image.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Barcode; 
using Leadtools.ImageProcessing; 
 
 
public void OneDBarcode_Example() 
{ 
   string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyOneDBarcodes.tif"); 
 
   BarcodeEngine engine = new BarcodeEngine(); 
 
   // Create the image to write the barcodes to 
   int resolution = 300; 
   using (RasterImage image = RasterImage.Create((int)(8.5 * resolution), (int)(11.0 * resolution), 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White))) 
   { 
      // Write a POSTNET and a PLANET barcodes 
      WriteBarcode(engine.Writer, image, BarcodeSymbology.UPCA, "01234567890", new LeadRect(10, 100, 400, 200)); 
      WriteBarcode(engine.Writer, image, BarcodeSymbology.Code128, "Code 128", new LeadRect(10, 400, 400, 200)); 
      WriteBarcode(engine.Writer, image, BarcodeSymbology.Code11, "124578", new LeadRect(10, 700, 400, 200)); 
 
      // Save the image 
      using (RasterCodecs codecs = new RasterCodecs()) 
      { 
         codecs.Save(image, imageFileName, RasterImageFormat.CcittGroup4, 1); 
      } 
   } 
 
   // Now read the barcodes again 
   using (RasterCodecs codecs = new RasterCodecs()) 
   { 
      using (RasterImage image = codecs.Load(imageFileName)) 
      { 
         // Read the UPC-A barcode 
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.UPCA); 
 
         // Read the Code 128 barcode 
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.Code128); 
 
         // Read the Code 11 barcode 
         ReadBarcodes(engine.Reader, image, BarcodeSymbology.Code11); 
      } 
   } 
} 
 
private void WriteBarcode(BarcodeWriter writer, RasterImage image, BarcodeSymbology symbology, string value, LeadRect bounds) 
{ 
   // Create the barcode data 
   BarcodeData barcode = new BarcodeData(symbology, value); 
   barcode.Bounds = bounds; 
 
   // Set the write options 
   OneDBarcodeWriteOptions options = new OneDBarcodeWriteOptions(); 
   options.TextPosition = BarcodeOutputTextPosition.Default; 
   options.UseXModule = false; 
   options.XModule = 30; 
   options.EnableErrorCheck = false; 
   options.SetGS1DatabarLinkageBit = false; 
   options.WriteTruncatedGS1Databar = false; 
   options.Code128TableEncoding = Code128BarcodeTableEncoding.Auto; 
   options.Code11CheckDigitType = Code11BarcodeCheckDigitType.CDigit; 
   options.MSIModuloType = MSIBarcodeModuloType.Modulo10; 
 
   // Write it 
   Console.WriteLine("Writing {0} barcode with data: {1}", symbology, value); 
   writer.WriteBarcode(image, barcode, options); 
} 
 
private void ReadBarcodes(BarcodeReader reader, RasterImage image, BarcodeSymbology symbology) 
{ 
   // Setup read options 
   OneDBarcodeReadOptions options = new OneDBarcodeReadOptions(); 
   options.SearchDirection = BarcodeSearchDirection.Horizontal; 
   options.EnableFastMode = true; 
   options.Granularity = 9; 
   options.MinimumStringLength = 3; 
   options.MaximumStringLength = 0; 
   options.WhiteLinesNumber = 3; 
   options.ReturnCheckDigit = BarcodeReturnCheckDigit.Default; 
   options.EnableErrorCheck = false; 
   options.AvoidCorruptedBlocks = false; 
   options.AllowPartialRead = false; 
   options.Code11CheckDigitType = Code11BarcodeCheckDigitType.CDigit; 
   options.MSIModuloType = MSIBarcodeModuloType.Modulo10; 
   options.CalculateBarWidthReduction = true; 
   options.Code39Extended = false; 
   options.EnableDoublePass = false; 
   options.EnablePreprocessing = false; 
   options.ResizeSmall1D = false; 
 
   Console.WriteLine("Reading {0} barcodes", symbology); 
   BarcodeData barcode = reader.ReadBarcode(image, LeadRect.Empty, symbology, options); 
   if (barcode != null) 
   { 
      Console.WriteLine(" At {0}, data: {1}", barcode.Bounds, barcode.Value); 
   } 
   else 
   { 
      Console.WriteLine(" Not found"); 
   } 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import static org.junit.Assert.assertTrue; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
 
import leadtools.*; 
import leadtools.barcode.*; 
import leadtools.codecs.*; 
 
 
public void oneDBarcodeExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
   String imageFileName = combine(LEAD_VARS_IMAGES_DIR, "OneDBarcodes.tif"); 
   BarcodeEngine engine = new BarcodeEngine(); 
 
   // Create the image to write the barcodes to 
   int resolution = 300; 
   RasterImage image = RasterImage.create((int) (8.5 * resolution), (int) (11.0 * resolution), 1, resolution, RasterColor.fromKnownColor(RasterKnownColor.WHITE)); 
 
   // Write a POSTNET and a PLANET barcodes 
   writeBarcode(engine.getWriter(), image, BarcodeSymbology.UPC_A, "01234567890", new LeadRect(10, 100, 400, 200)); 
   writeBarcode(engine.getWriter(), image, BarcodeSymbology.CODE_128, "Code 128", new LeadRect(10, 400, 400, 200)); 
   writeBarcode(engine.getWriter(), image, BarcodeSymbology.CODE_11, "124578", new LeadRect(10, 700, 400, 200)); 
 
   // Save the image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.save(image, imageFileName, RasterImageFormat.CCITT_GROUP4, 1); 
 
   // Now read the barcodes again 
   image = codecs.load(imageFileName); 
 
   // Read the UPC-A barcode 
   readBarcodes(engine.getReader(), image, BarcodeSymbology.UPC_A); 
 
   // Read the Code 128 barcode 
   readBarcodes(engine.getReader(), image, BarcodeSymbology.CODE_128); 
 
   // Read the Code 11 barcode 
   readBarcodes(engine.getReader(), image, BarcodeSymbology.CODE_11); 
 
   assertTrue(true); 
} 
 
// Create the barcode data 
private void writeBarcode(BarcodeWriter writer, RasterImage image, BarcodeSymbology symbology, String value, LeadRect bounds) { 
   BarcodeData barcode = new BarcodeData(symbology, value); 
   barcode.setBounds(bounds); 
 
   // Set the write options 
   OneDBarcodeWriteOptions options = new OneDBarcodeWriteOptions(); 
   options.setTextPosition(BarcodeOutputTextPosition.DEFAULT); 
   options.setUseXModule(false); 
   options.setXModule(30); 
   options.setEnableErrorCheck(false); 
   options.setSetGS1DatabarLinkageBit(false); 
   options.setWriteTruncatedGS1Databar(false); 
   options.setCode128TableEncoding(Code128BarcodeTableEncoding.AUTO); 
   options.setCode11CheckDigitType(Code11BarcodeCheckDigitType.C_DIGIT); 
   options.setMSIModuloType(MSIBarcodeModuloType.MODULO10); 
 
   // Write it 
   System.out.printf("Writing %1s barcode with data: %2s%n", symbology, value); 
   writer.writeBarcode(image, barcode, options); 
} 
 
// Setup read options 
private void readBarcodes(BarcodeReader reader, RasterImage image, BarcodeSymbology symbology) { 
   OneDBarcodeReadOptions options = new OneDBarcodeReadOptions(); 
   options.setSearchDirection(BarcodeSearchDirection.HORIZONTAL); 
   options.setEnableFastMode(true); 
   options.setGranularity(9); 
   options.setMinimumStringLength(3); 
   options.setMaximumStringLength(0); 
   options.setWhiteLinesNumber(3); 
   options.setReturnCheckDigit(BarcodeReturnCheckDigit.DEFAULT); 
   options.setEnableErrorCheck(false); 
   options.setAvoidCorruptedBlocks(false); 
   options.setAllowPartialRead(false); 
   options.setCode11CheckDigitType(Code11BarcodeCheckDigitType.C_DIGIT); 
   options.setMSIModuloType(MSIBarcodeModuloType.MODULO10); 
   options.setCalculateBarWidthReduction(true); 
   options.setCode39Extended(false); 
   options.setEnableDoublePass(false); 
   options.setEnablePreprocessing(false); 
   options.setResizeSmall1D(false); 
 
   System.out.printf("Reading %s barcodes%n", symbology); 
   BarcodeData barcode = reader.readBarcode(image, LeadRect.getEmpty(), symbology, options); 
   if (barcode != null) { 
 
      System.out.printf(" At %1s, data: %2s%n", barcode.getBounds(), barcode.getValue()); 
 
   } else { 
 
      System.out.println(" Not found"); 
 
   } 
} 
 
public static String combine(String path1, String path2) { 
   File file = new File(path1, path2); 
   return file.getPath(); 
}

Requirements

Target Platforms

Reference

OneDBarcodeReadOptions Class

OneDBarcodeReadOptions Members

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Help Version 23.0.2024.2.29

Leadtools.Barcode Assembly

Introduction

Getting Started

Namespaces

Leadtools.Barcode Namespace

Assemblies