LEADTOOLSバーコード(Leadtools.Barcodeアセンブリ)

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DatamatrixBarcodeDataクラス








メンバ 
単一のDatamatrixバーコードのためにデータを格納します。
オブジェクトモデル
構文
[TypeConverterAttribute()]
[SerializableAttribute()]
public class DatamatrixBarcodeData : BarcodeData, System.ICloneable  
'Declaration
 
<TypeConverterAttribute()>
<SerializableAttribute()>
Public Class DatamatrixBarcodeData 
   Inherits BarcodeData
   Implements System.ICloneable 
'Usage
 
Dim instance As DatamatrixBarcodeData
public sealed class DatamatrixBarcodeData : System.ICloneable  
@interface LTDatamatrixBarcodeData : LTBarcodeData <NSCopying>
public class DatamatrixBarcodeData extends BarcodeData
function Leadtools.Barcode.DatamatrixBarcodeData()
[TypeConverterAttribute()]
[SerializableAttribute()]
public ref class DatamatrixBarcodeData : public BarcodeData, System.ICloneable  
解説

DatamatrixBarcodeDataBarcodeData基本クラスから派生したクラスで、Datamatrixバーコードの読み取りまたは書き込みに使用できる固有のデータが追加されています。

読み取りバーコード

BarcodeReaderオブジェクトがDatamatrix(BarcodeSymbology.Datamatrix)を検出して読み取るとき、BarcodeReader.ReadBarcodeBarcodeReader.ReadBarcodesのメソッドは、見つかったバーコードごとに、基本BarcodeDataクラスにキャストされたDatamatrixBarcodeDataオブジェクトを返します。

.NET標準のキャストによってオブジェクトをDatamatrixBarcodeDataとして取得してから、このバーコード体系に関連する追加のデータプロパティを調べることができます。

ベースBarcodeDataオブジェクトで通常返されるすべてのデータメンバに加えて、このクラスには以下のメンバが追加されています。

上記のメンバに加えて、バーコードデータに関連しないそのほかの他のDatamatrix読み取りオプションをDatamatrixBarcodeReadOptionsクラスを使用して設定できます。

バーコードの書き込み

BarcodeWriterクラスには、画像へのバーコードの書き込みに使用するWriteBarcodeメソッドがあります。このメソッドは、ベースBarcodeDataとしてデータパラメータを受け取りますオブジェクト。Datamatrixバーコードを書き込むには、DatamatrixBarcodeDataのインスタンスを作成して必要なパラメーターを設定し、このオブジェクトをWriteBarcodeのデータパラメーターに渡します。

ベースBarcodeDataオブジェクトで通常通り設定されなければならないすべてのデータメンバに加えて、また、以下のメンバを指定します:

上記のメンバに加えて、バーコードデータに関係しないそのほかのDatamatrix書き込みオプションはDatamatrixBarcodeWriteOptionsクラスを使用して設定できます。

次のように、static(Visual BasicではShared)BarcodeData.CreateDefaultBarcodeDataメソッドを使用して、画像への書き込み用に設定されたデフォルトパラメーターを含むDatamatrixBarcodeDataの新しいインスタンスを作成できます。

[Visual Basic]


             Dim datamatrixData As DatamatrixBarcodeData = DirectCast(BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix), DatamatrixBarcodeData)
             

[C#]


             DatamatrixBarcodeData datamatrixData = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix) as DatamatrixBarcodeData;
             
サンプル

このサンプルは、異なるオプションを使用していくつかのDatamatrixバーコードを画像に書き込んだ後、再び読み取ります。

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

      
Public Sub DatamatrixBarcode_Example()
   Dim imageFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "MyDatamatrixBarcodes.tif")
   Dim engine As New BarcodeEngine()

   ' Create the image to write the barcodes to
   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))
      ' Write two Datamatrix barcodes, a square and a rectangle one
      WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size16X36, "Datamatrix1 16x36", False)
      WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size132X132, "Datamatrix2 132x132", True)

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

   ' Now read the barcodes again
   Using codecs As New RasterCodecs()
      Using image As RasterImage = codecs.Load(imageFileName)
         ' Read only square symbols, should only read the first barcode
         ReadBarcodes(engine.Reader, image, True)

         ' Read all symbols, should read both barcodes
         ReadBarcodes(engine.Reader, image, False)
      End Using
   End Using
End Sub

Private Sub WriteBarcode(ByVal writer As BarcodeWriter, ByVal image As RasterImage, ByVal symbolSize As DatamatrixBarcodeSymbolSize, ByVal value As String, ByVal topLeft As Boolean)
   ' Create the barcode data
   Dim barcode As DatamatrixBarcodeData = DirectCast(BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix), DatamatrixBarcodeData)
   barcode.SymbolSize = symbolSize
   barcode.Value = value

   ' We will use the alignment to position the barcodes, so use all of the image
   barcode.Bounds = New LogicalRectangle(0, 0, image.ImageWidth, image.ImageHeight, LogicalUnit.Pixel)

   ' Set the write options
   Dim options As New DatamatrixBarcodeWriteOptions()

   If topLeft Then
      options.HorizontalAlignment = BarcodeAlignment.Near
      options.VerticalAlignment = BarcodeAlignment.Near
   Else
      options.HorizontalAlignment = BarcodeAlignment.Far
      options.VerticalAlignment = BarcodeAlignment.Far
   End If

   options.DisableCompression = False
   options.GroupNumber = 0
   options.GroupTotal = 0
   options.FileIdNumberLowByte = 1
   options.FileIdNumberHighByte = 1
   options.XModule = 30

   ' Write it
   Console.WriteLine("Writing barcode with symbol size: {0} and Data: {1}", symbolSize, value)
   writer.WriteBarcode(image, barcode, options)
End Sub

Private Sub ReadBarcodes(ByVal reader As BarcodeReader, ByVal image As RasterImage, ByVal squareOnly As Boolean)
   ' Setup read options
   Dim options As New DatamatrixBarcodeReadOptions()
   options.ReadSquareSymbolsOnly = squareOnly
   options.EnableDoublePass = False
   options.EnableInvertedSymbols = False
   options.EnableFastMode = True
   options.EnableSmallSymbols = True

   Console.WriteLine("Reading Datamatrix barcodes with ReadSquareSymbolsOnly set to {0}", squareOnly)
   Dim barcodes() As BarcodeData = reader.ReadBarcodes(image, LogicalRectangle.Empty, 0, New BarcodeSymbology() {BarcodeSymbology.Datamatrix}, New BarcodeReadOptions() {options})
   Console.WriteLine("{0} barcodes found:", barcodes.Length)
   For Each barcode As DatamatrixBarcodeData In barcodes
      Console.WriteLine(" At {0}, symbol size: {1} and data: {2}", barcode.Bounds, barcode.SymbolSize, barcode.Value)
   Next
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 DatamatrixBarcode_Example()
{
   string imageFileName = Path.Combine(LEAD_VARS.ImagesDir, "MyDatamatrixBarcodes.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 Datamatrix barcodes, a square and a rectangle one
      WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size16X36, "Datamatrix1 16x36", false);
      WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size132X132, "Datamatrix2 132x132", true);

      // 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 only square symbols, should only read the first barcode
         ReadBarcodes(engine.Reader, image, true);

         // Read all symbols, should read both barcodes
         ReadBarcodes(engine.Reader, image, false);
      }
   }
}

private void WriteBarcode(BarcodeWriter writer, RasterImage image, DatamatrixBarcodeSymbolSize symbolSize, string value, bool topLeft)
{
   // Create the barcode data
   DatamatrixBarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix) as DatamatrixBarcodeData;
   barcode.SymbolSize = symbolSize;
   barcode.Value = value;

   // We will use the alignment to position the barcodes, so use all of the image
   barcode.Bounds = new LogicalRectangle(0, 0, image.ImageWidth, image.ImageHeight, LogicalUnit.Pixel);

   // Set the write options
   DatamatrixBarcodeWriteOptions options = new DatamatrixBarcodeWriteOptions();

   if(topLeft)
   {
      options.HorizontalAlignment = BarcodeAlignment.Near;
      options.VerticalAlignment = BarcodeAlignment.Near;
   }
   else
   {
      options.HorizontalAlignment = BarcodeAlignment.Far;
      options.VerticalAlignment = BarcodeAlignment.Far;
   }

   options.DisableCompression = false;
   options.GroupNumber = 0;
   options.GroupTotal = 0;
   options.FileIdNumberLowByte = 1;
   options.FileIdNumberHighByte = 1;
   options.XModule = 30;

   // Write it
   Console.WriteLine("Writing barcode with symbol size: {0} and Data: {1}", symbolSize, value);
   writer.WriteBarcode(image, barcode, options);
}

private void ReadBarcodes(BarcodeReader reader, RasterImage image, bool squareOnly)
{
   // Setup read options
   DatamatrixBarcodeReadOptions options = new DatamatrixBarcodeReadOptions();
   options.ReadSquareSymbolsOnly = squareOnly;
   options.EnableDoublePass = false;
   options.EnableInvertedSymbols = false;
   options.EnableFastMode = true;
   options.EnableSmallSymbols = true;

   Console.WriteLine("Reading Datamatrix barcodes with ReadSquareSymbolsOnly set to {0}", squareOnly);
   BarcodeData[] barcodes = reader.ReadBarcodes(image, LogicalRectangle.Empty, 0, new BarcodeSymbology[] { BarcodeSymbology.Datamatrix }, new BarcodeReadOptions[] { options });
   Console.WriteLine("{0} barcodes found:", barcodes.Length);
   foreach(DatamatrixBarcodeData barcode in barcodes)
   {
      Console.WriteLine(" At {0}, symbol size: {1} and data: {2}", barcode.Bounds, barcode.SymbolSize, barcode.Value);
   }
}

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 DatamatrixBarcode_Example()
{
   string imageFileName = @"MyDatamatrixBarcodes.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, RasterColorHelper.FromKnownColor(RasterKnownColor.White)))
   {
      // Write two Datamatrix barcodes, a square and a rectangle one
      WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size16X36, "Datamatrix1 16x36", false);
      WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size132X132, "Datamatrix2 132x132", true);

      // 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);
      }
   }

   // Now read the barcodes again
   using(RasterCodecs codecs = new RasterCodecs())
   {
      StorageFile loadFile = await Tools.AppInstallFolder.GetFileAsync(imageFileName);
      using(RasterImage image = await codecs.LoadAsync(LeadStreamFactory.Create(loadFile)))
      {
         // Read only square symbols, should only read the first barcode
         ReadBarcodes(engine.Reader, image, true);

         // Read all symbols, should read both barcodes
         ReadBarcodes(engine.Reader, image, false);
      }
   }
}

private void WriteBarcode(BarcodeWriter writer, RasterImage image, DatamatrixBarcodeSymbolSize symbolSize, string value, bool topLeft)
{
   // Create the barcode data
   BarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix);
   barcode.DatamatrixSymbolSize = symbolSize;
   barcode.Value = value;

   // We will use the alignment to position the barcodes, so use all of the image
   barcode.Bounds = LeadRectHelper.Create(0, 0, image.ImageWidth, image.ImageHeight);

   // Set the write options
   DatamatrixBarcodeWriteOptions options = new DatamatrixBarcodeWriteOptions();

   if(topLeft)
   {
      options.HorizontalAlignment = BarcodeAlignment.Near;
      options.VerticalAlignment = BarcodeAlignment.Near;
   }
   else
   {
      options.HorizontalAlignment = BarcodeAlignment.Far;
      options.VerticalAlignment = BarcodeAlignment.Far;
   }

   options.DisableCompression = false;
   options.GroupNumber = 0;
   options.GroupTotal = 0;
   options.FileIdNumberLowByte = 1;
   options.FileIdNumberHighByte = 1;
   options.XModule = 30;

   // Write it
   Debug.WriteLine("Writing barcode with symbol size: {0} and Data: {1}", symbolSize, value);
   writer.WriteBarcode(image, barcode, options);
}

private void ReadBarcodes(BarcodeReader reader, RasterImage image, bool squareOnly)
{
   // Setup read options
   DatamatrixBarcodeReadOptions options = new DatamatrixBarcodeReadOptions();
   options.ReadSquareSymbolsOnly = squareOnly;
   options.EnableDoublePass = false;
   options.EnableInvertedSymbols = false;
   options.EnableFastMode = true;
   options.EnableSmallSymbols = true;

   Debug.WriteLine("Reading Datamatrix barcodes with ReadSquareSymbolsOnly set to {0}", squareOnly);
   BarcodeData[] barcodes = reader.ReadBarcodes(image, LeadRectHelper.Empty, 0, new BarcodeSymbology[] { BarcodeSymbology.Datamatrix }, new IBarcodeReadOptions[] { options });
   if (barcodes == null)
   {
      Debug.WriteLine("No barcodes found");
      return;
   }

   Debug.WriteLine("{0} barcodes found:", barcodes.Length);
   foreach(BarcodeData barcode in barcodes)
   {
      Debug.WriteLine(" At {0}, symbol size: {1} and data: {2}", barcode.Bounds, barcode.DatamatrixSymbolSize, barcode.Value);
   }
}
using Leadtools;
using Leadtools.Codecs;
using Leadtools.Forms;
using Leadtools.Barcode;
using Leadtools.ImageProcessing;
using Leadtools.Examples;

public void DatamatrixBarcode_Example(RasterImage image, Stream outStream)
{
   BarcodeEngine engine = new BarcodeEngine();
   // Create the image to write the barcodes to
   RasterCodecs codecs = new RasterCodecs();

   // Write two Datamatrix barcodes, a square and a rectangle one
   WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size16X36, "Datamatrix1 16x36", false);
   WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size132X132, "Datamatrix2 132x132", true);

   // Save the image
   codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1);

   // Now read the barcodes again
   // Read only square symbols, should only read the first barcode
   ReadBarcodes(engine.Reader, image, true);

   // Read all symbols, should read both barcodes
   ReadBarcodes(engine.Reader, image, false);
}

private void WriteBarcode(BarcodeWriter writer, RasterImage image, DatamatrixBarcodeSymbolSize symbolSize, string value, bool topLeft)
{
   // Create the barcode data
   DatamatrixBarcodeData barcode = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix) as DatamatrixBarcodeData;
   barcode.SymbolSize = symbolSize;
   barcode.Value = value;

   // We will use the alignment to position the barcodes, so use all of the image
   barcode.Bounds = new LogicalRectangle(0, 0, image.ImageWidth, image.ImageHeight, LogicalUnit.Pixel);

   // Set the write options
   DatamatrixBarcodeWriteOptions options = new DatamatrixBarcodeWriteOptions();

   if(topLeft)
   {
      options.HorizontalAlignment = BarcodeAlignment.Near;
      options.VerticalAlignment = BarcodeAlignment.Near;
   }
   else
   {
      options.HorizontalAlignment = BarcodeAlignment.Far;
      options.VerticalAlignment = BarcodeAlignment.Far;
   }

   options.DisableCompression = false;
   options.GroupNumber = 0;
   options.GroupTotal = 0;
   options.FileIdNumberLowByte = 1;
   options.FileIdNumberHighByte = 1;
   options.XModule = 30;

   // Write it
   Console.WriteLine("Writing barcode with symbol size: {0} and Data: {1}", symbolSize, value);
   writer.WriteBarcode(image, barcode, options);
}

private void ReadBarcodes(BarcodeReader reader, RasterImage image, bool squareOnly)
{
   // Setup read options
   DatamatrixBarcodeReadOptions options = new DatamatrixBarcodeReadOptions();
   options.ReadSquareSymbolsOnly = squareOnly;
   options.EnableDoublePass = false;
   options.EnableInvertedSymbols = false;
   options.EnableFastMode = true;
   options.EnableSmallSymbols = true;

   Console.WriteLine("Reading Datamatrix barcodes with ReadSquareSymbolsOnly set to {0}", squareOnly);
   BarcodeData[] barcodes = reader.ReadBarcodes(image, LogicalRectangle.Empty, 0, new BarcodeSymbology[] { BarcodeSymbology.Datamatrix }, new BarcodeReadOptions[] { options });
   Console.WriteLine("{0} barcodes found:", barcodes.Length);
   foreach(DatamatrixBarcodeData barcode in barcodes)
   {
      Console.WriteLine(" At {0}, symbol size: {1} and data: {2}", barcode.Bounds, barcode.SymbolSize, barcode.Value);
   }
}
Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Forms
Imports Leadtools.Barcode
Imports Leadtools.ImageProcessing

Public Sub DatamatrixBarcode_Example(ByVal image As RasterImage, ByVal outStream As Stream)
  Dim engine As BarcodeEngine = New BarcodeEngine()
  ' Create the image to write the barcodes to
  Dim codecs As RasterCodecs = New RasterCodecs()

  ' Write two Datamatrix barcodes, a square and a rectangle one
  WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size16X36, "Datamatrix1 16x36", False)
  WriteBarcode(engine.Writer, image, DatamatrixBarcodeSymbolSize.Size132X132, "Datamatrix2 132x132", True)

  ' Save the image
  codecs.Save(image, outStream, RasterImageFormat.CcittGroup4, 1)

  ' Now read the barcodes again
  ' Read only square symbols, should only read the first barcode
  ReadBarcodes(engine.Reader, image, True)

  ' Read all symbols, should read both barcodes
  ReadBarcodes(engine.Reader, image, False)
End Sub

Private Sub WriteBarcode(ByVal writer As BarcodeWriter, ByVal image As RasterImage, ByVal symbolSize As DatamatrixBarcodeSymbolSize, ByVal value As String, ByVal topLeft As Boolean)
  ' Create the barcode data
  Dim barcode As DatamatrixBarcodeData = TryCast(BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix), DatamatrixBarcodeData)
  barcode.SymbolSize = symbolSize
  barcode.Value = value

  ' We will use the alignment to position the barcodes, so use all of the image
  barcode.Bounds = New LogicalRectangle(0, 0, image.ImageWidth, image.ImageHeight, LogicalUnit.Pixel)

  ' Set the write options
  Dim options As DatamatrixBarcodeWriteOptions = New DatamatrixBarcodeWriteOptions()

  If topLeft Then
    options.HorizontalAlignment = BarcodeAlignment.Near
    options.VerticalAlignment = BarcodeAlignment.Near
  Else
    options.HorizontalAlignment = BarcodeAlignment.Far
    options.VerticalAlignment = BarcodeAlignment.Far
  End If

  options.DisableCompression = False
  options.GroupNumber = 0
  options.GroupTotal = 0
  options.FileIdNumberLowByte = 1
  options.FileIdNumberHighByte = 1
  options.XModule = 30

  ' Write it
  Console.WriteLine("Writing barcode with symbol size: {0} and Data: {1}", symbolSize, value)
  writer.WriteBarcode(image, barcode, options)
End Sub

Private Sub ReadBarcodes(ByVal reader As BarcodeReader, ByVal image As RasterImage, ByVal squareOnly As Boolean)
  ' Setup read options
  Dim options As DatamatrixBarcodeReadOptions = New DatamatrixBarcodeReadOptions()
  options.ReadSquareSymbolsOnly = squareOnly
  options.EnableDoublePass = False
  options.EnableInvertedSymbols = False
  options.EnableFastMode = True
  options.EnableSmallSymbols = True

  Console.WriteLine("Reading Datamatrix barcodes with ReadSquareSymbolsOnly set to {0}", squareOnly)
  Dim barcodes As BarcodeData() = reader.ReadBarcodes(image, LogicalRectangle.Empty, 0, New BarcodeSymbology() { BarcodeSymbology.Datamatrix }, New BarcodeReadOptions() { options })
  Console.WriteLine("{0} barcodes found:", barcodes.Length)
  For Each barcode As DatamatrixBarcodeData In barcodes
    Console.WriteLine(" At {0}, symbol size: {1} and data: {2}", barcode.Bounds, barcode.SymbolSize, barcode.Value)
  Next barcode
End Sub
必要条件

ターゲットプラットホーム

参照

参照

DatamatrixBarcodeDataメンバ
Leadtools.Barcode名前空間
BarcodeDataクラス
BarcodeReaderクラス
BarcodeWriterクラス
BarcodeSymbology列挙体
BarcodeEngineクラス
MicroPDF417BarcodeDataクラス
PDF417BarcodeDataクラス
QRBarcodeDataクラス
DatamatrixBarcodeReadOptionsクラス
DatamatrixBarcodeWriteOptionsクラス
BarcodeReader.ReadBarcode
BarcodeReader.ReadBarcodes
BarcodeWriter.WriteBarcode
LEADTOOLSバーコードによるプログラミング
サポートされているバーコード体系
バーコードサポートのロック解除
読み取りバーコードチュートリアル
バーコードの書き込みチュートリアル
LEADTOOLSのDatamatrixバーコード
バーコードの書き込み―四角形とXModule

Leadtools.Barcodeは、バーコードモジュールのライセンスと、解除キーが必要です。詳細は、以下を参照してください。LEADTOOLSツールキット機能