ColorResolutionCommandDataEventArgs Class

Summary

Provides data for the ColorResolutionCommand.Data event.

Syntax

C++

Java

public class ColorResolutionCommandDataEventArgs : EventArgs

Public Class ColorResolutionCommandDataEventArgs  
   Inherits System.EventArgs

public class ColorResolutionCommandDataEvent extends LeadEvent

public ref class ColorResolutionCommandDataEventArgs : public System.EventArgs

Example

This example will convert an image from 24 to 1 bits/pixel saving the data into an external image manually

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing; 
 
 
public void ColorResolutionCommandDataEventArgsExample() 
{ 
	RasterCodecs codecs = new RasterCodecs(); 
 
	string srcFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"); 
	string destFileName = Path.Combine(LEAD_VARS.ImagesDir, "Image1_colorresData.bmp"); 
 
	// Load the source image from disk 
	RasterImage srcImage = codecs.Load(srcFileName); 
 
	// Create the destination image 
	_row = 0; 
	_destImage = new RasterImage( 
	   RasterMemoryFlags.Conventional, 
	   srcImage.Width, 
	   srcImage.Height, 
	   1, 
	   RasterByteOrder.Rgb, 
	   RasterViewPerspective.TopLeft, 
	   null, 
	   IntPtr.Zero, 
	   0); 
 
	// Color-res the image to 1 bits/pixel, we will save the data ourselves into 
	// the destination image 
	ColorResolutionCommand command = new ColorResolutionCommand(); 
	command.BitsPerPixel = 1; 
	command.DitheringMethod = RasterDitheringMethod.FloydStein; 
	command.Data += new EventHandler<ColorResolutionCommandDataEventArgs>(command_Data); 
	_destImage.Access(); 
	command.Run(srcImage); 
	_destImage.Release(); 
	command.Data -= new EventHandler<ColorResolutionCommandDataEventArgs>(command_Data); 
 
	// Save it to disk 
	codecs.Save(_destImage, destFileName, RasterImageFormat.Bmp, 4); 
 
	// Clean Up 
	_destImage.Dispose(); 
	srcImage.Dispose(); 
	codecs.Dispose(); 
} 
 
RasterImage _destImage; 
int _row; 
 
void command_Data(object sender, ColorResolutionCommandDataEventArgs e) 
{ 
	// Set the data into the destination image 
	_destImage.SetRow(_row, e.Data, _destImage.BytesPerLine * e.Lines); 
	_row += e.Lines; 
 
	// If you want the data in a managed buffer, 
	// you can do this 
	// byte[] data = new byte[_destImage.BytesPerLine * e.Lines]; 
	// System.Runtime.InteropServices.Marshal.Copy(e.Data, data, 0, data.Length); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS21\Resources\Images"; 
}

Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.ImageProcessing 
 
Public Sub ColorResolutionCommandDataEventArgsExample() 
   Dim codecs As RasterCodecs = New RasterCodecs() 
 
   Dim srcFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") 
   Dim destFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1_colorresData.bmp") 
 
   ' Load the source image from disk 
   Dim srcImage As RasterImage = codecs.Load(srcFileName) 
 
   ' Create the destination image 
   _row = 0 
   _destImage = New RasterImage(RasterMemoryFlags.Conventional, srcImage.Width, srcImage.Height, 
                                1, RasterByteOrder.Rgb, RasterViewPerspective.TopLeft, Nothing, IntPtr.Zero, 0) 
 
   ' Color-res the image to 1 bits/pixel, we will save the data ourselves into 
   ' the destination image 
   Dim command As ColorResolutionCommand = New ColorResolutionCommand() 
   command.BitsPerPixel = 1 
   command.DitheringMethod = RasterDitheringMethod.FloydStein 
   AddHandler command.Data, AddressOf command_Data 
   _destImage.Access() 
   command.Run(srcImage) 
   _destImage.Release() 
   RemoveHandler command.Data, AddressOf command_Data 
 
   ' Save it to disk 
   codecs.Save(_destImage, destFileName, RasterImageFormat.Bmp, 4) 
   _destImage.Dispose() 
 
   ' Clean Up 
   srcImage.Dispose() 
End Sub 
 
Private _destImage As RasterImage 
Private _row As Integer 
 
Private Sub command_Data(ByVal sender As Object, ByVal e As ColorResolutionCommandDataEventArgs) 
   ' Set the data into the destination image 
   _destImage.SetRow(_row, e.Data, _destImage.BytesPerLine * e.Lines) 
   _row += e.Lines 
 
   ' If you want the data in a managed buffer, 
   ' you can do this 
   ' byte[] data = new byte[_destImage.BytesPerLine * e.Lines]; 
   ' System.Runtime.InteropServices.Marshal.Copy(e.Data, data, 0, data.Length); 
End Sub 
 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS21\Resources\Images" 
End Class

Requirements

Target Platforms

Reference

ColorResolutionCommandDataEventArgs Members

Leadtools.ImageProcessing Namespace

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