PharmaCodeBarcodeReadOptions Class

Summary

Contains the extra options to use when reading PharmaCode barcodes.

Syntax

C++

[SerializableAttribute()] 
public class PharmaCodeBarcodeReadOptions : BarcodeReadOptions

<TypeConverterAttribute()> 
<SerializableAttribute()> 
Public Class PharmaCodeBarcodeReadOptions  
   Inherits BarcodeReadOptions 
   Implements System.ICloneable

[TypeConverterAttribute()] 
[SerializableAttribute()] 
public ref class PharmaCodeBarcodeReadOptions : public BarcodeReadOptions, System.ICloneable

Remarks

The PharmaCodeBarcodeReadOptions class is used to control the options when reading PharmaCode 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 BarcodeSymbology.PharmaCode

Change the members of the returned PharmaCodeBarcodeReadOptions by casting it from BarcodeReadOptions to PharmaCodeBarcodeReadOptions.

You can also create an instance of the PharmaCodeBarcodeReadOptions class and use it directly in the BarcodeReader.ReadBarcode and BarcodeReader.ReadBarcodes methods that accept 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.PharmaCode

In addition to the features and members, the PharmaCodeBarcodeReadOptions contains these PharmaCode barcode specific features:

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

Example

This example writes a PharmaCode barcode to an image and then reads it back.

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Barcode; 
using Leadtools.ImageProcessing; 
 
 
public void BarcodeReadOptions_Example() 
{ 
	string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "Barcode1.tif"); 
 
	// Create a Barcode engine 
	BarcodeEngine engine = new BarcodeEngine(); 
 
	// Get the Barcode reader instance 
	BarcodeReader reader = engine.Reader; 
 
	// Load the image 
	using (RasterCodecs codecs = new RasterCodecs()) 
	{ 
		using (RasterImage image = codecs.Load(imageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1)) 
		{ 
			// Rotate the image by 90, so default option of reading horizontal barcodes will not work 
			Console.WriteLine("Rotating the image by 90 degrees"); 
			RotateCommand rotate = new RotateCommand(90 * 100, RotateCommandFlags.Resize, RasterColor.FromKnownColor(RasterKnownColor.White)); 
			rotate.Run(image); 
 
			// Read all the barcodes from the image using default options 
			Console.WriteLine("Reading barcodes using default options"); 
			BarcodeData[] barcodes = reader.ReadBarcodes(image, LeadRect.Empty, 0, null, null); 
 
			// Show the number of barcodes found, should be 0 since default search direction is horizontal 
			Console.WriteLine("Found {0} barcodes", barcodes.Length); 
 
			// Now create options to read barcodes horizontally and vertically 
			BarcodeReadOptions[] options = GetHorizontalAndVerticalReadBarcodeOptions(reader); 
 
			// Read again 
			Console.WriteLine("Reading barcodes using new options"); 
			barcodes = reader.ReadBarcodes(image, LeadRect.Empty, 0, null, options); 
 
			// Show the number of barcodes found, should all be read now 
			Console.WriteLine("Found {0} barcodes", barcodes.Length); 
		} 
	} 
} 
 
private static BarcodeReadOptions[] GetHorizontalAndVerticalReadBarcodeOptions(BarcodeReader reader) 
{ 
	// By default, the options read horizontal barcodes only, create an array of options capable of reading vertical barcodes 
 
	// Notice, we cloned the default options in reader so we will not change the original options 
 
	OneDBarcodeReadOptions oneDReadOptions = reader.GetDefaultOptions(BarcodeSymbology.UPCA).Clone() as OneDBarcodeReadOptions; 
	oneDReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical; 
 
	FourStateBarcodeReadOptions fourStateReadOptions = reader.GetDefaultOptions(BarcodeSymbology.USPS4State).Clone() as FourStateBarcodeReadOptions; 
	fourStateReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical; 
 
	PostNetPlanetBarcodeReadOptions postNetPlanetReadOptions = reader.GetDefaultOptions(BarcodeSymbology.PostNet).Clone() as PostNetPlanetBarcodeReadOptions; 
	postNetPlanetReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical; 
 
	GS1DatabarStackedBarcodeReadOptions gs1StackedReadOptions = reader.GetDefaultOptions(BarcodeSymbology.GS1DatabarStacked).Clone() as GS1DatabarStackedBarcodeReadOptions; 
	gs1StackedReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical; 
 
	PatchCodeBarcodeReadOptions patchCodeReadOptions = reader.GetDefaultOptions(BarcodeSymbology.PatchCode).Clone() as PatchCodeBarcodeReadOptions; 
	patchCodeReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical; 
 
	PDF417BarcodeReadOptions pdf417ReadOptions = reader.GetDefaultOptions(BarcodeSymbology.PDF417).Clone() as PDF417BarcodeReadOptions; 
	pdf417ReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical; 
 
	MicroPDF417BarcodeReadOptions microPdf417ReadOptions = reader.GetDefaultOptions(BarcodeSymbology.MicroPDF417).Clone() as MicroPDF417BarcodeReadOptions; 
	microPdf417ReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical; 
 
	// Even though this array will not contain all options, it should be enough to read all barcodes, since the version of ReadBarcodes we will use 
	// will use the default options if an override is not passed 
	BarcodeReadOptions[] readOptions = 
	{ 
	oneDReadOptions, fourStateReadOptions, postNetPlanetReadOptions, gs1StackedReadOptions, patchCodeReadOptions, pdf417ReadOptions, microPdf417ReadOptions 
 }; 
 
	return readOptions; 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Barcode 
Imports Leadtools.ImageProcessing 
 
Public Sub BarcodeReadOptions_Example() 
   Dim imageFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Barcode1.tif") 
 
   ' Create a Barcode engine 
   Dim engine As New BarcodeEngine() 
 
   ' Get the Barcode reader instance 
   Dim reader As BarcodeReader = engine.Reader 
 
   ' Load the image 
   Using codecs As New RasterCodecs() 
      Using image As RasterImage = codecs.Load(imageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1) 
         ' Rotate the image by 90, so default option of reading horizonal barcodes will not work 
         Console.WriteLine("Rotating the image by 90 degrees") 
         Dim rotate As New RotateCommand(90 * 100, RotateCommandFlags.Resize, RasterColor.FromKnownColor(RasterKnownColor.White)) 
         rotate.Run(image) 
 
         ' Read all the barcodes from the image using default options 
         Console.WriteLine("Reading barcodes using default options") 
         Dim barcodes() As BarcodeData = reader.ReadBarcodes(image, LeadRect.Empty, 0, Nothing, Nothing) 
 
         ' Show the number of barcodes found, should be 0 since default search direction is horizontal 
         Console.WriteLine("Found {0} barcodes", barcodes.Length) 
 
         ' Now create options to read barcodes horizontally and vertically 
         Dim options() As BarcodeReadOptions = GetHorizontalAndVerticalReadBarcodeOptions(reader) 
 
         ' Read again 
         Console.WriteLine("Reading barcodes using new options") 
         barcodes = reader.ReadBarcodes(image, LeadRect.Empty, 0, Nothing, options) 
 
         ' Show the number of barcodes found, should all be read now 
         Console.WriteLine("Found {0} barcodes", barcodes.Length) 
      End Using 
   End Using 
End Sub 
 
Private Shared Function GetHorizontalAndVerticalReadBarcodeOptions(ByVal reader As BarcodeReader) As BarcodeReadOptions() 
   ' By default, the options read horizontal barcodes only, create an array of options capable of reading vertical barcodes 
 
   ' Notice, we cloned the default options in reader so we will not change the original options 
 
   Dim oneDReadOptions As OneDBarcodeReadOptions = DirectCast(reader.GetDefaultOptions(BarcodeSymbology.UPCA).Clone(), OneDBarcodeReadOptions) 
   oneDReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical 
 
   Dim fourStateReadOptions As FourStateBarcodeReadOptions = DirectCast(reader.GetDefaultOptions(BarcodeSymbology.USPS4State).Clone(), FourStateBarcodeReadOptions) 
   fourStateReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical 
 
   Dim postNetPlanetReadOptions As PostNetPlanetBarcodeReadOptions = DirectCast(reader.GetDefaultOptions(BarcodeSymbology.PostNet).Clone(), PostNetPlanetBarcodeReadOptions) 
   postNetPlanetReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical 
 
   Dim gs1StackedReadOptions As GS1DatabarStackedBarcodeReadOptions = DirectCast(reader.GetDefaultOptions(BarcodeSymbology.GS1DatabarStacked).Clone(), GS1DatabarStackedBarcodeReadOptions) 
   gs1StackedReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical 
 
   Dim patchCodeReadOptions As PatchCodeBarcodeReadOptions = DirectCast(reader.GetDefaultOptions(BarcodeSymbology.PatchCode).Clone(), PatchCodeBarcodeReadOptions) 
   patchCodeReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical 
 
   Dim pdf417ReadOptions As PDF417BarcodeReadOptions = DirectCast(reader.GetDefaultOptions(BarcodeSymbology.PDF417).Clone(), PDF417BarcodeReadOptions) 
   pdf417ReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical 
 
   Dim microPdf417ReadOptions As MicroPDF417BarcodeReadOptions = DirectCast(reader.GetDefaultOptions(BarcodeSymbology.MicroPDF417).Clone(), MicroPDF417BarcodeReadOptions) 
   microPdf417ReadOptions.SearchDirection = BarcodeSearchDirection.HorizontalAndVertical 
 
   ' Even though this array will not contain all options, it should be enough to read all barcodes, since the version of ReadBarcodes we will use 
   ' will use the default options if an overriden is not passed 
   Dim readOptions() As BarcodeReadOptions = 
   { 
      oneDReadOptions, fourStateReadOptions, postNetPlanetReadOptions, gs1StackedReadOptions, patchCodeReadOptions, pdf417ReadOptions, microPdf417ReadOptions 
   } 
 
   Return readOptions 
End Function 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class