LineRemove Event

Summary

Optional delegate method for additional processing.

Syntax

Objective-C

C++/CLI

Java

Python

public event EventHandler<LineRemoveCommandEventArgs> LineRemove

typedef void (^LTLineRemoveCommandStatus)(LTRasterImage *image, LTLineRemoveCommandEventArgs *args, LTRemoveStatus *status) 
 
- (BOOL)run:(LTRasterImage *)image 
   progress:(nullable LTRasterCommandProgress)progressHandler 
     status:(nullable LTLineRemoveCommandStatus)lineRemoveStatus 
      error:(NSError **)error

public void addLineRemoveCommandListener(LineRemoveCommandListener listener) 
public void removeLineRemoveCommandListener(LineRemoveCommandListener listener)

public: 
event EventHandler<LineRemoveCommandEventArgs^>^ LineRemove

def LineRemove(sender,e): # sender: LineRemoveCommand e: LineRemoveCommandEventArgs

Event Data

The event handler receives an argument of type LineRemoveCommandEventArgs containing data related to this event. The following LineRemoveCommandEventArgs properties provide information specific to this event.

Property	Description
Image	Gets an RasterImage object that references the affected image.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Core; 
 
public void LineRemoveCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Clean.tif")); 
 
   // Prepare the command 
   LineRemoveCommand command = new LineRemoveCommand(); 
   command.LineRemove += new EventHandler<LineRemoveCommandEventArgs>(LineRemoveEvent_S1); 
   command.Type = LineRemoveCommandType.Horizontal; 
   command.Flags = LineRemoveCommandFlags.UseGap; 
   command.GapLength = 2; 
   command.MaximumLineWidth = 5; 
   command.MinimumLineLength = 200; 
   command.MaximumWallPercent = 10; 
   command.Wall = 7; 
   command.Run(image); 
 
} 
 
private void LineRemoveEvent_S1(object sender, LineRemoveCommandEventArgs e) 
{ 
   MessageBox.Show("Row Col " + "( " + e.StartRow.ToString() + ", " + e.StartColumn + " )" + 
      "\n Length " + e.Length.ToString()); 
   e.Status = RemoveStatus.Remove; 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS23\Resources\Images"; 
}

 
import java.io.File; 
import java.io.IOException; 
 
import org.junit.*; 
import org.junit.runner.JUnitCore; 
import org.junit.runner.Result; 
import org.junit.runner.notification.Failure; 
import static org.junit.Assert.*; 
 
import leadtools.*; 
import leadtools.codecs.*; 
import leadtools.imageprocessing.core.*; 
 
 
public void lineRemoveCommandExample() { 
   final String LEAD_VARS_IMAGES_DIR = "C:\\LEADTOOLS23\\Resources\\Images"; 
 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.setThrowExceptionsOnInvalidImages(true); 
 
   RasterImage image = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "Clean.tif")); 
 
   // Prepare the command 
   LineRemoveCommand command = new LineRemoveCommand(); 
   command.addLineRemoveCommandListener(lineRemoveEvent_S1); 
   command.setType(LineRemoveCommandType.HORIZONTAL); 
   command.setFlags(LineRemoveCommandFlags.USE_GAP.getValue()); 
   command.setGapLength(2); 
   command.setMaximumLineWidth(5); 
   command.setMinimumLineLength(200); 
   command.setMaximumWallPercent(10); 
   command.setWall(7); 
 
   command.run(image); 
   codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
 
   assertTrue(new File(combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")).exists()); 
   System.out.println("Command run and image saved to " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
} 
 
LineRemoveCommandListener lineRemoveEvent_S1 = new LineRemoveCommandListener() { 
   @Override 
   public void onLineRemoveEvent(LineRemoveCommandEvent e) { 
      System.out.println("Row Col " + "( " + e.getStartRow() + ", " + e.getStartColumn() + " )" + 
            "\n Length " + e.getLength()); 
      e.setStatus(RemoveStatus.REMOVE); 
   } 
};

Requirements

Target Platforms

Reference

LineRemoveCommand Class

LineRemoveCommand Members

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Core Assembly

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Leadtools.ImageProcessing.Core Namespace

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