zoomwindow.java

J2me唆哈的代码

package a.a.a.b;

import java.awt.*;
import java.awt.image.*;

import javax.swing.JWindow;

public class ZoomWindow extends JWindow {

	public static final long serialVersionUID=1;
	
	private BufferedImage image;
	private int zoom;
	
	public ZoomWindow(Frame owner) {
		super(owner);
		this.setBackground(Color.BLACK);
	}

	public void setZoom(int zoomSize){
		zoom=zoomSize;
	}
	synchronized public void update(BufferedImage img){
		int ow=img.getWidth();
		int oh=img.getHeight();
		int w=ow*zoom;
		int h=oh*zoom;
		int[] ori=new int[ow*oh];
		img.getRGB(0,0,ow,oh,ori,0,ow);
		int[] dst=new int[w*h];
		int op=0;
		int dp=0;
		for(int y=0;y<oh;++y){
			for(int x=0;x<ow;++x,++op){
				for(int j=0;j<zoom;++j,dp++){
					dst[dp]=ori[op];
				}
			}
			int o=dp-w;
			for(int l=1;l<zoom;++l,dp+=w){
				o=dp-w;
				for(int x=0;x<w;++x,++o){
					dst[dp+x]=dst[o];
				}
			}
		}
		ori=null;
		image=null;
		image=new BufferedImage(w,h,BufferedImage.TYPE_INT_ARGB);
		image.setRGB(0,0,w,h,dst,0,w);
		dst=null;
		//image=img;//.getScaledInstance(ow*zoom,oh*zoom)
		this.repaint();
	}
	
	public void paint(Graphics g){
		if(image!=null){
			g.drawImage(image,0,0,null);
		}else{
			g.setColor(Color.BLACK);
			g.fillRect(0,0,this.getWidth(),this.getHeight());
		}
	}
}