import java.awt.*;
import java.awt.event.*;
import java.io.*;

public class DisplayResults
{
    public static void main(String argv[])
    {
	int w, h;
	if (argv.length < 3)
	{
	    System.out.println("Usage: java DisplayResults width height filename");
	    System.exit(0);
	    w = 2;
	    h = 2;
	    //  Yes, I know. But javac likes to complain about
	    //  possibly not initialized variables.
	}
	else
	{
    	    w = Integer.parseInt(argv[0]);
    	    h = Integer.parseInt(argv[1]);
	    if (w < 100) w = 100;
	    if (h < 100) h = 100;
	    w += 60;
	    h += 60;
	}
	Frame display;
	display = new Frame("Rendered Image");

	System.out.println("Size is " + w + " x " + h);
	display.setSize(w, h);	
	display.show();
	
	display.addWindowListener(new WindowAdapter()
	{
	    public void windowClosing(WindowEvent e)
	    {
		System.exit(0);
	    }
	});
	
	Graphics g = display.getGraphics();

	//Dimension size = display.getSize();
	//int w2 = size.width; 
	//int h2 = size.height;		
	//Image backImage = display.createImage(w2, h2);
	//Graphics g2 = backImage.getGraphics();

	try 
	{
	    String infilename = argv[2];
	    ObjectInputStream filein = new ObjectInputStream(
		new FileInputStream(infilename));
    
	    Scanline picture;
	    Color thisColor = Color.yellow;
	    Color prevColor = Color.green;
	    int leftEnd = 0, pictureLength = 100;
    
	    
	    //  Print out each line. This algorithm speeds things up
	    //  by drawing a line if it finds a span of identical colors,
	    //  rather than drawing every pixel.
	    
	    // for (int j=0; j<40; j++)
	    int j = 0;
	    while(true)
	    {
		picture = (Scanline) filein.readObject();
		pictureLength=picture.length;
		
		for (int i=0; i<pictureLength; i++) 
		{
		    thisColor = picture.getValue(i);
	
		    // If left edge, start line
		    if (i==0) 
		    {
			prevColor = thisColor; leftEnd = 0; 
		    } 
		    
		    //  If right edge, draw line
		    else if (i == pictureLength-1)	
		    {
			g.setColor(prevColor);
			g.drawLine(10+leftEnd,45+j,10+i,45+j);
			//g2.setColor(prevColor);
			//g2.drawLine(leftEnd,j,i,j); 
		    } 
		    
		    //  If new color reached, draw line
		    else if (!thisColor.equals(prevColor))  
		    {
			//  If only one pixel...
			if (leftEnd == i-1)                     
			{
			    g.setColor(prevColor);
			    g.drawLine(10+i-1,45+j,10+i,45+j);
			    //g2.setColor(prevColor);
			    //g2.drawLine(i-1,j,i,j);
			} 
			else 
			{
			    g.setColor(prevColor);
			    g.drawLine(10+leftEnd,45+j,10+i-1,45+j);
			    //g2.setColor(prevColor);
			    //g2.drawLine(leftEnd,j,i-1,j); 
			}
	
			//  And set up for next line.
			prevColor = thisColor;			
			leftEnd = i;
		    }
		}
		j++;
	    }
	}
	
	catch(Exception e)
	{
	}
    }
}