import java.applet.*;
import java.awt.*;
import java.io.*;
import java.net.*;


public class ps2e3 extends Applet 
{
	private int canvasWidth, canvasHeight;
	private int cellWidth, cellHeight;
	private Button btn1;
	int xloc, yloc,oldxloc,oldyloc,bar1x,bar1y,bar2x,bar2y;
	int letterx,lettery, xindex,yindex,xoffset,yoffset;
	char curkey[],curchar[], selectedkey[];
	char grid[][];
	boolean horizontal = false;
	String blank, alphatable[];
	private DataInputStream instream;

	public void init()
	{
			
		canvasWidth = 512;
		canvasHeight = 384;
		curkey = new char[1];
		curchar = new char[1];
		selectedkey = new char[1];
		grid = new char[32][24];
		blank = new String(" ");
		resize(canvasWidth, canvasHeight);
		alphatable = new String[27];

//		initialize the grid with blanks
		for (int i=0;i<32;i++)
		{
			for (int j=0; j<24;j++)
			{
				grid[i][j] = blank.charAt(0);
		    }
		}
		
// this section reads in the code file

	  try
	  {
	 URL CodefileName = new URL("http://acg.media.mit.edu/mas962/ps1/code.txt");
		URLConnection codefile = CodefileName.openConnection();
	    instream = new DataInputStream(codefile.getInputStream());
		for (int i = 0 ; i < 26 ; i++)
		{
			alphatable[i] = instream.readLine();
			alphatable[i] = alphatable[i].substring(2);
		}
	  }
	  catch (IOException e);
		
	}




	public boolean keyDown(Event e, int key)
	{
	if (e.id == Event.KEY_PRESS)
			{  	
				selectedkey[0] = (char) key;
				if (xloc < 512 && yloc < 384)
				{
				
				for (int j = 0; j < 26; j++)
				{
				  
					char firstchar = alphatable[j].charAt(0);
					int wordlength = alphatable[j].length();

					if (selectedkey[0] == (firstchar))
					{
						letterx = xloc;
						lettery = yloc;
						
						if ((horizontal == true) && (letterx + (wordlength*16) > 512)) break; 
						if ((horizontal == false) && (lettery + (wordlength*16) > 384)) break;								
						

						for (int k = 0; k < wordlength; k++)
				
						{
							curchar[0] =  alphatable[j].charAt(k);
							Graphics g = getGraphics();
							Font font1 = new Font("Courier",Font.PLAIN, 12);
							g.setFont(font1);
							g.setColor(Color.white);
							g.fillRect(letterx,(lettery - 16),16,16);
							g.setColor(Color.black);
							g.drawRect (letterx,(lettery - 16),16,16);
							g.drawChars(curchar,0,1,letterx+5,lettery-4);
							grid[letterx/16][lettery/16] = curchar[0];
							if (horizontal == true)
								letterx = letterx + 16;
							else
								lettery = lettery + 16;
							
						}
	//					horizontal = !horizontal;
					break;
					}
	 		
				}
				}
			}			
		return true;
	  }

	 public boolean mouseMove(Event e, int x, int y)
	{
		 	

				Graphics g = getGraphics();
				//erase previous cursor line
				g.setColor(Color.black);
				if (xloc < 512 && yloc < 384)
					g.drawLine(xloc,yloc,xloc+xoffset,yloc+yoffset);
				xloc = (x/16)*16; 
				yloc = 16+(y/16)*16;
							
				//draw new cursor line
				g.setColor(Color.red);
				if (xloc < 512 && yloc < 384)
					g.drawLine(xloc,yloc,xloc+xoffset,yloc+yoffset);

				oldxloc = xloc;
				oldyloc = yloc;
		 	
		
				return true;
		 
	 }

	public boolean mouseDown(Event e, int x, int y)
	{
		Graphics g = getGraphics();
		g.setColor(Color.black);
		g.drawLine(xloc,yloc,xloc+xoffset,yloc+yoffset);
		if (horizontal == true)
		{
				xoffset = 0;
				yoffset = -16;
	
		}
				
		else
		{
				xoffset = 16;
				yoffset = 0;
		}
	
		 g.setColor(Color.red);
		g.drawLine(xloc,yloc,xloc+xoffset,yloc+yoffset);
		horizontal = !horizontal;
		return true;
	}
	
	public void paint(Graphics g)
	{
		Font font1 = new Font("Courier",Font.PLAIN, 24);
		g.setFont(font1);
		g.setColor(Color.black);
		g.fillRect(0, 0, canvasWidth+1, canvasHeight);
	}
}