transformed.java

用JAVA编的画图编辑器的代码

import java.awt.*;
import java.applet.Applet;
import java.awt.image.*;
import java.awt.geom.AffineTransform;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.awt.event.WindowAdapter;


public class Transformed extends Applet {

    private BufferedImage bi;
    private Double angle;
    private Double x;
    private Double y;
    private int kind;
    private Image ima;
    
    float[] elements = { .1111f, .1111f, .1111f,
                         .1111f, .1111f, .1111f,
                         .1111f, .1111f, .1111f};

    public Transformed(Image img,Double ang,int a) {
    		kind=a;
    		angle=ang;
            setBackground(Color.white);

            try {
                MediaTracker tracker = new MediaTracker(this);
                tracker.addImage(img, 0);
                tracker.waitForID(0);
            } catch (Exception e) {}

            int iw = img.getWidth(this);
            int ih = img.getHeight(this);
            bi = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
            Graphics2D big = bi.createGraphics();
            big.drawImage(img,0,0,this);

    } 


	public Transformed(Image img,Double sizx, Double sizy,int a) {
			kind=a;
			x=sizx;
			y=sizy;
            setBackground(Color.white);

            try {
                MediaTracker tracker = new MediaTracker(this);
                tracker.addImage(img, 0);
                tracker.waitForID(0);
            } catch (Exception e) {}

            int iw = img.getWidth(this);
            int ih = img.getHeight(this);
            bi = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
            Graphics2D big = bi.createGraphics();
            big.drawImage(img,0,0,this);

    }



    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        int w = getSize().width;
        int h = getSize().height;
        int bw = bi.getWidth(this);
        int bh = bi.getHeight(this);

	AffineTransform at = new AffineTransform();
	//at.scale(w/2.0/bw, h/1.0/bh);
	//at.rotate(angle, 0.0, 50.0);
	//at.getShearInstance(-0.4, 0.0);
	if(kind==0){at=AffineTransform.getScaleInstance(x, y);}
	if(kind==1){at=AffineTransform.getRotateInstance(angle, 300.0, 330.0);}

	BufferedImageOp biop = null;

	BufferedImage bimg = new BufferedImage(bw,bh,BufferedImage.TYPE_INT_RGB);

        Kernel kernel = new Kernel(3, 3, elements);
        ConvolveOp cop = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
	cop.filter(bi,bimg);
	biop = new AffineTransformOp(at, AffineTransformOp.TYPE_NEAREST_NEIGHBOR);

	//g2.drawImage(null, biop, 0, 0);
      	g2.drawImage(bimg, biop,90,30); 
      	
     settheImage((Image)bimg );
     //Image abcdef=new Image();

    }
    
    public void settheImage(Image image){
    	ima=image;
    }
    public Image gettheImage(){
    	return ima;
    }

    /*public static void main(String s[]) {
	WindowListener l = new WindowAdapter() {
	    public void windowClosing(WindowEvent e) {System.exit(0);}
	};
	Frame f = new Frame("Transformed");
	f.addWindowListener(l);
	f.add("Center", new Transformed());
	f.pack();
	f.setSize(new Dimension(600, 300));
	f.show();
    }*/
}