LEADTOOLS Barcode (Leadtools.Barcode assembly)

BarcodeAlignment Enumeration

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Leadtools.Barcode Namespace : BarcodeAlignment Enumeration
Horizontal or vertical to use when writing barcodes.
Syntax
'Declaration
 
<SerializableAttribute()>
Public Enum BarcodeAlignment 
   Inherits System.Enum
   Implements System.IComparable, System.IConvertible, System.IFormattable 
'Usage
 
Dim instance As BarcodeAlignment
enum LTBarcodeAlignment

public enum BarcodeAlignment

Leadtools.Barcode.BarcodeAlignment = function() { };
Leadtools.Barcode.BarcodeAlignment.prototype = {

  Near = 0,
	Center = 1,
	Far = 2,
	
 };
[SerializableAttribute()]
public enum class BarcodeAlignment : public System.Enum, System.IComparable, System.IConvertible, System.IFormattable 
Members
ValueMemberDescription
0Near

Aligns the barcode to the near edge of BarcodeData.Bounds. This is the left edge (LogicalRectangle.Left) when this is a horizontal alignment or the top edge (LogicalRectangle.Top) when this is a vertical alignment.

The barcode actual width or height is not used.

1Center

Aligns the barcode to the center BarcodeData.Bounds. This is horizontal center (LogicalRectangle.Left + (LogicalRectangle.Width - "barcodeWidth") / 2) when this is a horizontal alignment or the vertical center (LogicalRectangle.Top + (LogicalRectangle.Height - "barcodeHeight") / 2) when this is a vertical alignment.

2Far

Aligns the barcode to the far edge of BarcodeData.Bounds. This is the left edge (LogicalRectangle.Right - "barcodeWidth") if this is a horizontal alignment or the top edge (LogicalRectangle.Bottom - "barcodeHeight") if this is a vertical alignment.

Remarks

When writing barcodes, the BarcodeWriter object may not use all the area defined by the output rectangle (BarcodeData.Bounds) since not all sizes can be used when writing a barcode and the value of the width and height of the bounds can have a special meaning. For more information, refer to Writing Barcodes - Bounds and XModule.

In cases where not all of the bounds is used, an alignment value can set to determine whether the result barcode is left, top, right, bottom or center aligned to the rectangle. For these, you can use the BarcodeAlignment enumeration to control how the barcode is written.

Alignment is only supported by 2D symbologies (Datamatrix, MicroPDF417, PDF417 and QR). BarcodeAlignment is used as the type for the following properties:

Note that the default values for all these properties is BarcodeAlignment.Near.

Example
Copy Code   
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Forms
Imports Leadtools.Barcode
Imports Leadtools.ImageProcessing

Public Sub BarcodeAlignment_Example()
   Dim imageFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "MyBarcode.tif")

   Dim engine As New BarcodeEngine()
   Dim writer As BarcodeWriter = engine.Writer

   ' Create the QR barcode
   Dim barcode As BarcodeData = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.QR)

   ' Create the image (8.5 by 11 inches at 300 DPI)
   Dim resolution As Integer = 300
   Using image As RasterImage = RasterImage.Create(CType(8.5 * resolution, Integer), CType(11.0 * resolution, Integer), 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White))
      ' We will control the position by alignment, so set the barcode bound to be the whole image
      barcode.Bounds = New LogicalRectangle(0, 0, image.ImageWidth, image.ImageHeight, LogicalUnit.Pixel)

      Dim options As QRBarcodeWriteOptions = DirectCast(writer.GetDefaultOptions(BarcodeSymbology.QR), QRBarcodeWriteOptions)

      ' Let the engine determine the size of the barcode using X Module (default behavior)

      ' Use these alignments
      Dim verticalAlignments() As BarcodeAlignment = {BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far}
      Dim horizontalAlignments() As BarcodeAlignment = {BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far}

      For Each verticalAlignment As BarcodeAlignment In verticalAlignments
         For Each horizontalAlignment As BarcodeAlignment In horizontalAlignments
            ' Write the barcode using these alignments
            options.HorizontalAlignment = verticalAlignment
            options.VerticalAlignment = horizontalAlignment
            writer.WriteBarcode(image, barcode, options)
         Next
      Next

      ' The image now have 9 barcodes

      ' Save the image
      Using codecs As New RasterCodecs()
         codecs.Save(image, imageFileName, RasterImageFormat.CcittGroup4, 1)
      End Using
   End Using
End Sub

Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Forms;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;

public void BarcodeAlignment_Example()
{
   string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyBarcode.tif");

   BarcodeEngine engine = new BarcodeEngine();
   BarcodeWriter writer = engine.Writer;

   // Create the QR barcode
   BarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.QR);

   // Create the image (8.5 by 11 inches at 300 DPI)
   int resolution = 300;
   using(RasterImage image = RasterImage.Create((int)(8.5 * resolution), (int)(11.0 * resolution), 1, resolution, RasterColor.FromKnownColor(RasterKnownColor.White)))
   {
      // We will control the position by alignment, so set the barcode bound to be the whole image
      barcode.Bounds = new LogicalRectangle(0, 0, image.ImageWidth, image.ImageHeight, LogicalUnit.Pixel);

      QRBarcodeWriteOptions options = writer.GetDefaultOptions(BarcodeSymbology.QR) as QRBarcodeWriteOptions;

      // Let the engine determine the size of the barcode using X Module (default behavior)

      // Use these alignments
      BarcodeAlignment[] verticalAlignments = { BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far };
      BarcodeAlignment[] horizontalAlignments = { BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far };

      foreach(BarcodeAlignment verticalAlignment in verticalAlignments)
      {
         foreach(BarcodeAlignment horizontalAlignment in horizontalAlignments)
         {
            // Write the barcode using these alignments
            options.HorizontalAlignment = verticalAlignment;
            options.VerticalAlignment = horizontalAlignment;
            writer.WriteBarcode(image, barcode, options);
         }
      }

      // The image now have 9 barcodes

      // Save the image
      using(RasterCodecs codecs = new RasterCodecs())
      {
         codecs.Save(image, imageFileName, RasterImageFormat.CcittGroup4, 1);
      }
   }
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;

      
public async Task BarcodeAlignment_Example()
{
   string imageFileName = @"MyBarcode.tif";
   BarcodeEngine engine = new BarcodeEngine();
   BarcodeWriter writer = engine.Writer;

   // Create the QR barcode
   BarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.QR);

   // Create the image (8.5 by 11 inches at 300 DPI)
   int resolution = 300;
   using(RasterImage image = RasterImage.Create((int)(8.5 * resolution), (int)(11.0 * resolution), 1, resolution, RasterColorHelper.FromKnownColor(RasterKnownColor.White)))
   {
      // We will control the position by alignment, so set the barcode bound to be the whole image
      barcode.Bounds = LeadRectHelper.Create(0, 0, image.ImageWidth, image.ImageHeight);

      QRBarcodeWriteOptions options = writer.GetDefaultOptions(BarcodeSymbology.QR) as QRBarcodeWriteOptions;

      // Let the engine determine the size of the barcode using X Module (default behavior)

      // Use these alignments
      BarcodeAlignment[] verticalAlignments = { BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far };
      BarcodeAlignment[] horizontalAlignments = { BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far };

      foreach(BarcodeAlignment verticalAlignment in verticalAlignments)
      {
         foreach(BarcodeAlignment horizontalAlignment in horizontalAlignments)
         {
            // Write the barcode using these alignments
            options.HorizontalAlignment = verticalAlignment;
            options.VerticalAlignment = horizontalAlignment;
            writer.WriteBarcode(image, barcode, options);
         }
      }

      // The image now have 9 barcodes

      // Save the image
      using(RasterCodecs codecs = new RasterCodecs())
      {
         StorageFile saveFile = await Tools.AppLocalFolder.CreateFileAsync(imageFileName);
         await codecs.SaveAsync(image, LeadStreamFactory.Create(saveFile), RasterImageFormat.CcittGroup4, 1);
      }
   }
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Forms;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;
using Leadtools.Examples;

public void BarcodeAlignment_Example(RasterImage image, Stream outStream)
{
   BarcodeEngine engine = new BarcodeEngine();
   BarcodeWriter writer = engine.Writer;
   // Create the QR barcode
   BarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.QR);

   // Create the image (8.5 by 11 inches at 300 DPI)
   // We will control the position by alignment, so set the barcode bound to be the whole image
   barcode.Bounds = new LogicalRectangle(0, 0, image.ImageWidth, image.ImageHeight, LogicalUnit.Pixel);

   QRBarcodeWriteOptions options = writer.GetDefaultOptions(BarcodeSymbology.QR) as QRBarcodeWriteOptions;

   // Let the engine determine the size of the barcode using X Module (default behavior)

   // Use these alignments
   BarcodeAlignment[] verticalAlignments = { BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far };
   BarcodeAlignment[] horizontalAlignments = { BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far };

   foreach(BarcodeAlignment verticalAlignment in verticalAlignments)
   {
      foreach(BarcodeAlignment horizontalAlignment in horizontalAlignments)
      {
         // Write the barcode using these alignments
         options.HorizontalAlignment = verticalAlignment;
         options.VerticalAlignment = horizontalAlignment;
         writer.WriteBarcode(image, barcode, options);
      }
   }

   // The image now have 9 barcodes

   // Save the image
   RasterCodecs codecs = new RasterCodecs();
   codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1);
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Forms
Imports Leadtools.Barcode
Imports Leadtools.ImageProcessing

Public Sub BarcodeAlignment_Example(ByVal image As RasterImage, ByVal outStream As Stream)
  Dim engine As BarcodeEngine = New BarcodeEngine()
  Dim writer As BarcodeWriter = engine.Writer
  ' Create the QR barcode
  Dim barcode As BarcodeData = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.QR)

  ' Create the image (8.5 by 11 inches at 300 DPI)
  ' We will control the position by alignment, so set the barcode bound to be the whole image
  barcode.Bounds = New LogicalRectangle(0, 0, image.ImageWidth, image.ImageHeight, LogicalUnit.Pixel)

  Dim options As QRBarcodeWriteOptions = TryCast(writer.GetDefaultOptions(BarcodeSymbology.QR), QRBarcodeWriteOptions)

  ' Let the engine determine the size of the barcode using X Module (default behavior)

  ' Use these alignments
  Dim verticalAlignments As BarcodeAlignment() = { BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far }
  Dim horizontalAlignments As BarcodeAlignment() = { BarcodeAlignment.Near, BarcodeAlignment.Center, BarcodeAlignment.Far }

  For Each verticalAlignment As BarcodeAlignment In verticalAlignments
    For Each horizontalAlignment As BarcodeAlignment In horizontalAlignments
       ' Write the barcode using these alignments
       options.HorizontalAlignment = verticalAlignment
       options.VerticalAlignment = horizontalAlignment
       writer.WriteBarcode(image, barcode, options)
    Next horizontalAlignment
  Next verticalAlignment

  ' The image now have 9 barcodes

  ' Save the image
  Dim codecs As RasterCodecs = New RasterCodecs()
  codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1)
End Sub
Inheritance Hierarchy

System.Object
   System.ValueType
      System.Enum
         Leadtools.Barcode.BarcodeAlignment

Requirements

Target Platforms

See Also

Reference

Leadtools.Barcode Namespace

 

 

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Leadtools.Barcode requires a Barcode Module license and unlock key. For more information, refer to: LEADTOOLS Toolkit Features