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PatchCodeBarcodeReadOptions Class

Summary
Contains extra options to use when reading Patch Code barcodes.
Syntax
C#
Objective-C
C++
Java
[SerializableAttribute()] 
public class PatchCodeBarcodeReadOptions : BarcodeReadOptions 
@interface LTPatchCodeBarcodeReadOptions : LTBarcodeReadOptions 
public class PatchCodeBarcodeReadOptions extends BarcodeReadOptions 
[TypeConverterAttribute()] 
[SerializableAttribute()] 
public ref class PatchCodeBarcodeReadOptions : public BarcodeReadOptions, System.ICloneable   
Remarks

The PatchCodeBarcodeReadOptions class is used to control the options when reading Patch Code barcodes using LEADTOOLS. Set the options in two ways:

The BarcodeReader class contains default options for each barcode symbology (or group of common symbologies). These options can be retrieved using the BarcodeReader.GetDefaultOptions method passing one of the following:

Then change the members of the returned PatchCodeBarcodeReadOptions by casting it from BarcodeReadOptions to PatchCodeBarcodeReadOptions.

Also create an instance of the PatchCodeBarcodeReadOptions class and use it directly in the BarcodeReader.ReadBarcode and BarcodeReader.ReadBarcodes methods that accepts a single or array of options as an input parameter.

The base BarcodeReadOptions contains the following members and features:

Member Description
BarcodeReadOptions.ForeColor

Controls the barcode foreground color (color of the bars or symbols) to use when reading a barcode from a colored image.

BarcodeReadOptions.BackColor

Controls the barcode background color (color of the spaces) to use when reading a barcode from a colored image.

BarcodeReadOptions.Load and BarcodeReadOptions.Save

Can be used to save or load the options to/from an XML file or stream.

BarcodeReadOptions.GetSupportedSymbologies

This class overrides the base class method to return an array containing the following symbologies: BarcodeSymbology.PatchCode

In addition to the features and members, the PatchCodeBarcodeReadOptions contains these Patch Code barcodes specific features:

Member Description
SearchDirection

The direction to use when searching for barcodes (horizontal, vertical or both)

Granularity

The number of scanned lines per column to skip when reading a barcode

Example

This example will write and Patch Code barcode to/from an image.

C#
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Barcode; 
using Leadtools.ImageProcessing; 
 
 
public void PatchCodeBarcode_Example() 
{ 
	string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyPatchCodeBarcode.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 two PatchCode barcodes 
		WriteBarcode(engine.Writer, image, "1100"); 
 
		// 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 PatchCode barcode 
			ReadBarcode(engine.Reader, image); 
		} 
	} 
} 
 
private void WriteBarcode(BarcodeWriter writer, RasterImage image, string value) 
{ 
	// Create the barcode data 
	BarcodeData barcode = new BarcodeData(BarcodeSymbology.PatchCode, value); 
 
	// Set the write options 
	PatchCodeBarcodeWriteOptions options = new PatchCodeBarcodeWriteOptions(); 
	// Use X Module when writing the barcode 
	options.UseXModule = true; 
	options.XModule = 30; 
 
	// Usually PatchCodes are centered in the middle of the page and take the whole height 
 
	// Calculate its size 
	writer.CalculateBarcodeDataBounds(new LeadRect(0, 0, image.ImageWidth, image.ImageHeight), image.XResolution, image.YResolution, barcode, options); 
 
	// Position it 
	LeadRect pixels = barcode.Bounds; 
	pixels.X = (image.ImageWidth - pixels.Width) / 2; 
	pixels.Y = 0; 
	pixels.Height = image.ImageHeight; 
	barcode.Bounds = new LeadRect(); 
 
	// Write it 
	Console.WriteLine("Writing barcode with Data: {0}", value); 
	writer.WriteBarcode(image, barcode, options); 
} 
 
private void ReadBarcode(BarcodeReader reader, RasterImage image) 
{ 
	// Setup read options 
	PatchCodeBarcodeReadOptions options = new PatchCodeBarcodeReadOptions(); 
	options.SearchDirection = BarcodeSearchDirection.Horizontal; 
	options.Granularity = 9; 
 
	Console.WriteLine("Reading PatchCode barcode"); 
	BarcodeData barcode = reader.ReadBarcode(image, LeadRect.Empty, BarcodeSymbology.PatchCode, 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:\LEADTOOLS22\Resources\Images"; 
} 
Requirements

Target Platforms

Help Version 22.0.2022.5.25
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© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.

Leadtools.Barcode Assembly

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.