/* TO DO: 
 * Canvas resizing isn't handled by the grid(could be zoom, or complete redraw)
 * PALLETTE!!
 * Undo feature
 * Dump to file (Needs Review)
 * 3D!!
 */

//Global imports of external JRE libraries and event handlers
import objectdraw.*;
import java.awt.*;
import java.io.*;
import java.lang.*;
import java.util.*;
import java.applet.*;

// Extend WindowsController to allow drawing to a canvas

public class guicode extends WindowController
	{
	public FilledOval Ball; //the ball
	Location lastMouse;

/* Draw the grid in gray for reference. Creates an array of lines
 * which span the canvas via one loop; makes a 10x10 grid.
 */

	private FilledRect X_Grid;
	private FilledRect Y_Grid;
	public void onMouseEnter(Location p)
		{
		int i = 0;
		while (i <= canvas.getWidth()) 
			{
				X_Grid = new FilledRect(i,0,1,canvas.getHeight(),canvas);
				X_Grid.setColor(Color.GRAY);
				X_Grid.sendToBack();
				Y_Grid = new FilledRect(0,i,canvas.getWidth(),1,canvas);
				Y_Grid.setColor(Color.GRAY);
				Y_Grid.sendToBack();
				i+=canvas.getWidth()/10;
			}
		}
	public void onMouseExit(Location p)
	{
		canvas.clear();
	}
	
/* Create a new ball everytime the mouse is clicked. The real cool part is that
 * the center of the ball is automagically moved to the nearest grid point.
 */
	
	public void onMouseClick(Location p) 
	{

/*	perhaps width# should be in an array, or even stored in a file to allow 
 * 	for multiple "balls" in the future. We will need this for the 
 * 	proteins(different atoms=>different sizes).
 */	
		int width1;
		width1 = 7; 
		FilledOval Ball = new FilledOval(p.getX()-3.5,p.getY()-3.5,width1,width1,canvas);
		Ball.setColor(Color.RED);
		Ball.moveTo((canvas.getWidth()/10)*Math.round(p.getX()/(canvas.getWidth()/10))-(width1/2),(canvas.getWidth()/10)*Math.round(p.getY()/(canvas.getWidth()/10))-(width1/2));
		Ball.sendToFront();
	}

// Create an undo function here

/* Make sticks to connect the balls we have. The most important 
 * statement creates a way for the stick to be either going in 
 * the X direction or the Y direction, but not both.
 */

	public void onMousePress(Location point)  
	{
		lastMouse = point;
	}
 	public void onMouseDrag(Location p)
 		{
 		if ( (Math.abs(lastMouse.getX()-p.getX()))<Math.abs((lastMouse.getY()-p.getY())) ) 
 		{
 	 		FilledRect Stick = new FilledRect((canvas.getWidth()/10)*Math.round(p.getX()/(canvas.getWidth()/10))-1.5,(canvas.getWidth()/10)*Math.round(p.getY()/(canvas.getWidth()/10)),3,(canvas.getWidth()/10),canvas);
 	 		Stick.setColor(Color.BLACK);
 	 		Stick.sendToBack();
 		}	
 		else
 		{ 		
 	 		FilledRect Stick = new FilledRect((canvas.getWidth()/10)*Math.round(p.getX()/(canvas.getWidth()/10)),(canvas.getWidth()/10)*Math.round(p.getY()/(canvas.getWidth()/10))-1.5,(canvas.getWidth()/10),3,canvas);
 	 		Stick.setColor(Color.BLACK);
 	 		Stick.sendToBack();
 		}
 		}
	}
//END CLASS

//Begin a new input output class. Should try to dump to the Text Document
/* public class ReadfromFile 
   {
	public void main(String args[]) 
		{
		FileOutputStream fileout;
		try 
			{
			fileout = new FileOutputStream ("dump.txt");
			new PrintStream (fileout).print("Hello World!");
			fileout.close();
			} 
		catch (IOException e)
			{
			System.err.println("You have an error, revise your code please");
			System.exit(-1);
			}
		}

}*/