Leadtools.Barcode Namespace : DatamatrixBarcodeData Class |
[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<LTBarcodeDataDelegate>
public class DatamatrixBarcodeData extends BarcodeData
function Leadtools.Barcode.DatamatrixBarcodeData()
[TypeConverterAttribute()] [SerializableAttribute()] public ref class DatamatrixBarcodeData : public BarcodeData, System.ICloneable
The DatamatrixBarcodeData class derives from the base BarcodeData to add specific data that can be read or written when using Datamatrix barcodes.
When the BarcodeReader object detects and reads a Datamatrix ( BarcodeSymbology.Datamatrix), the BarcodeReader.ReadBarcode and BarcodeReader.ReadBarcodes methods will return the DatamatrixBarcodeData object for each barcode cast down to the base BarcodeData class.
You can can perform standard .NET casting to get the object as DatamatrixBarcodeData and then examine the extra data properties associated with it.
In addition to all the data members returned as usual in the base BarcodeData object, this class adds the following members:
SymbolSize - An DatamatrixBarcodeSymbolSize enumeration member that specifies the symbol size of the Datamatrix barcode.
In addition to the members above, other Datamatrix read options not related to the barcode data can be set using the DatamatrixBarcodeReadOptions class.
The BarcodeWriter class contains the WriteBarcode method that is used to write a barcode to an image. This method accepts the data parameter as the base BarcodeData object. To write a Datamatrix barcode, create an instance of DatamatrixBarcodeData and fill the required parameters, then pass this object as the data parameter to WriteBarcode.
In addition to all the data members that must be set as usual in the base BarcodeData object, also specify the following members:
SymbolSize - An DatamatrixBarcodeSymbolSize enumeration member that specifies the symbol size of the Datamatrix barcode.
In addition to the members above, other Datamatrix write options not related to the barcode data can be set using the DatamatrixBarcodeWriteOptions class.
You can use the static (or Shared in Visual Basic) BarcodeData.CreateDefaultBarcodeData method to create a new instance of DatamatrixBarcodeData that contains default parameters ready for writing to an image:
[Visual Basic]
Dim datamatrixData As DatamatrixBarcodeData = DirectCast(BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix), DatamatrixBarcodeData)
[C#]
DatamatrixBarcodeData datamatrixData = BarcodeData.CreateDefaultBarcodeData(BarcodeSymbology.Datamatrix) as DatamatrixBarcodeData;
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
DatamatrixBarcodeData Members
Leadtools.Barcode Namespace
BarcodeData Class
BarcodeReader Class
BarcodeWriter Class
BarcodeSymbology Enumeration
BarcodeEngine Class
MicroPDF417BarcodeData Class
PDF417BarcodeData Class
QRBarcodeData Class
DatamatrixBarcodeReadOptions Class
DatamatrixBarcodeWriteOptions Class
BarcodeReader.ReadBarcode
BarcodeReader.ReadBarcodes
BarcodeWriter.WriteBarcode
Programming with LEADTOOLS Barcode
Supported Barcode Symbologies
Unlocking Barcode Support
Reading Barcodes Tutorial
Writing Barcodes Tutorial
Datamatrix Barcodes in LEADTOOLS
Writing Barcodes - Bounds and XModule