Opacity Property

Summary

Gets or sets the opacity value used when combining the areas from the source and destination images.

Syntax

Objective-C

C++/CLI

Java

Python

public int Opacity { get; set; }

@property (nonatomic, assign) NSInteger opacity;

public int getOpacity(); 
public void setOpacity( 
   int intValue 
);

public: 
property int Opacity { 
   int get(); 
   void set (    int ); 
}

Opacity # get and set (AlphaBlendCommand)

Property Value

The valid range is from 0 - 65535 for 64-bit, 48-bit and 16-bit grayscale images and from 0 - 4095 for 12-bit grayscale images. Otherwise, it is from 0 to 255.

Example

Java

using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.ImageProcessing.Effects; 
 
 
public void AlphaBlendCommandExample() 
{ 
   // Load an image 
   RasterCodecs codecs = new RasterCodecs(); 
   codecs.ThrowExceptionsOnInvalidImages = true; 
 
   RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Master.jpg")); 
 
   // Prepare the command 
   RasterImage SrcImage = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, @"ImageProcessingDemo\Image3.cmp"), 4, CodecsLoadByteOrder.Bgr, 1, 1); 
 
   AlphaBlendCommand command = new AlphaBlendCommand(); 
   //Combine SrcImage with image, with half opacity. 
   command.DestinationRectangle = new LeadRect(image.Width / 8, image.Height / 8, image.Width, image.Height); 
   command.SourceImage = SrcImage; 
   command.Opacity = 128; 
   command.Run(image); 
   codecs.Save(image, Path.Combine(LEAD_VARS.ImagesDir, "Result.jpg"), RasterImageFormat.Jpeg, 24); 
 
} 
 
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.effects.AlphaBlendCommand; 
 
 
public void alphaBlendCommandExample() { 
    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, "Master.jpg")); 
 
    // Prepare the command 
    RasterImage srcImage = codecs.load(combine(LEAD_VARS_IMAGES_DIR, "Image2.cmp"), 4, CodecsLoadByteOrder.BGR, 1, 
            1); 
    AlphaBlendCommand command = new AlphaBlendCommand(); 
    // Combine SrcImage with image, with half opacity 
    command.setDestinationRectangle( 
            new LeadRect(image.getWidth() / 8, image.getHeight() / 8, image.getWidth(), image.getHeight())); 
    command.setSourceImage(srcImage); 
    command.setOpacity(128); 
 
    int change = command.run(image); 
    assertTrue(change != RasterImageChangedFlags.NONE); 
 
    codecs.save(image, combine(LEAD_VARS_IMAGES_DIR, "Result.jpg"), RasterImageFormat.JPEG, 24); 
    System.out.println("Command run and image saved to: " + combine(LEAD_VARS_IMAGES_DIR, "Result.jpg")); 
}

Requirements

Target Platforms

Reference

AlphaBlendCommand Class

AlphaBlendCommand Members

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Help Version 23.0.2024.3.3

Leadtools.ImageProcessing.Effects Assembly

Introduction

Getting Started

Namespaces

Leadtools.ImageProcessing.Effects Namespace

Assemblies