filters.java

高级java2 大学教程(含源码,经典的Java学习教程

// Filters.java
// Applies blurring, sharpening, converting, modifying on images.
package com.deitel.advjhtp1.javaspace.ImageProcessor;

// Java core packages
import java.awt.*;
import java.awt.image.*;

// Java standard extensions
import javax.swing.*;

// Deitel packages
import com.deitel.advjhtp1.java2d.*;

public class Filters {
   
   Java2DImageFilter blurFilter;
   Java2DImageFilter sharpenFilter;
   Java2DImageFilter invertFilter;
   Java2DImageFilter colorFilter;
   
   BufferedImage bufferedImage;
   
   // constructor method initializes ImageFilters and pulls
   // BufferedImage out of the ImageIcon
   public Filters( ImageIcon icon ) 
   {
      blurFilter = new BlurFilter();
      sharpenFilter = new SharpenFilter();
      invertFilter = new InvertFilter();
      colorFilter = new ColorFilter();
      
      Image image = icon.getImage();
      bufferedImage = new BufferedImage( 
         image.getWidth( null ), image.getHeight( null ), 
         BufferedImage.TYPE_INT_RGB );
      
      Graphics2D gg = bufferedImage.createGraphics();
      gg.drawImage( image, null, null );
   }
   
   // apply BlurFilter to bufferedImage
   public void blurImage() 
   {
      bufferedImage = blurFilter.processImage( bufferedImage );
   }
   
   // apply SharpenFilter to bufferedImage
   public void sharpenImage()
   {
      bufferedImage = sharpenFilter.processImage( 
         bufferedImage );
   }
   
   // apply InvertFilter to bufferedImage
   public void invertImage() 
   {
      bufferedImage = invertFilter.processImage( 
         bufferedImage );
   }
   
   // apply ColorFilter to bufferedImage
   public void colorFilter()
   {
      bufferedImage = colorFilter.processImage( 
         bufferedImage );
   }
   
   // constructs and returns an ImageIcon from bufferedImage
   public ImageIcon getImageIcon()
   {
      return ( new ImageIcon( bufferedImage ));
   }
}

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