/*
 * Created on 2004/04/30
 *
 * To change the template for this generated file go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
package zoom2;

import java.awt.Image;
import java.awt.image.ImageProducer;
import java.awt.image.MemoryImageSource;
import java.awt.Component;
import java.awt.image.PixelGrabber;

/**
 * @author kaji
 *
 * To change the template for this generated type comment go to
 * Window>Preferences>Java>Code Generation>Code and Comments
 */
public class PxlImage extends Component {
  private boolean  cond=false;
  protected int  srcW,srcH,_widt,_heig;
  protected int pxls[],cp_pxls[];
  public Image CroppedImage;	
  
  public PxlImage(Image img)
  {
  
	srcW=img.getWidth(null);
	srcH=img.getHeight(null);
	if ((srcW<1)||(srcH<1)) { return; } 
	pxls=new int[srcW*srcH];
	
    PixelGrabber pg=
     new PixelGrabber(img,0,0,srcW,srcH,pxls,0,srcW);
    try {
      pg.grabPixels();
	  }
    catch (InterruptedException e) {
      e.printStackTrace();
      return;
      }
  }

  public Image crop(int x,int y,int widt,int heig)
  {
  Image tmp;
   ImageProducer ip=new MemoryImageSource(widt,heig,pxls,
    srcW*y+x,srcW);
   tmp=createImage(ip);
   
  return(tmp);
  }
  
  public void create_cropBuffer(int w,int h)
  {
  int i;
   
   cp_pxls=new int[w*h];
   for (i=0;i<(w*h);i++) cp_pxls[i]=0;
   _widt=w; _heig=h;
   
   ImageProducer ip=new MemoryImageSource(w,h,cp_pxls,
	 0,w);
   CroppedImage=createImage(ip);

  return;
  }
  
  public void copyto_cropBuffer(int x,int y,int step)
  {
  int i,j,dest,idx;
  
   dest=0;
   for (j=0;j<_heig;j++) {
     for (i=0;i<_widt;i++) {
       idx=((y+(j*step))*srcW)+x+(i*step);
       if (idx>=(srcW*srcH)) return;
       if ((x+i)>=srcW) cp_pxls[dest]=0;
        else cp_pxls[dest]=pxls[idx];
   	   dest++;
       }
     }
  }
  
  public Image get_croppedImage(int x,int y)
  {
   copyto_cropBuffer(x,y,1);
   CroppedImage.flush();
  
  return(CroppedImage);
  }

  public Image get_croppedImage_stepby(int x,int y,int step)
  {
   copyto_cropBuffer(x,y,step);
   CroppedImage.flush();
  
  return(CroppedImage);
  }
  
  public Image flush_and_get()
  {
   CroppedImage.flush();
  return(CroppedImage);
  }
}