import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;
/**
 * Write a description of class TicTacToeBoardComponent here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class TicTacToeBoardComponent extends JComponent
{
    /**
     * An example of a method - replace this comment with your own
     * 
     * @param  y   a sample parameter for a method
     * @return     the sum of x and y 
     */
    public void paintComponent(Graphics g)
    {
        int boardSize = 300;
        int boardTopY = 100;
        int boardLeftX =100;
        int spaceAmount = 5;
               
        //recover Graphics 2D
        Graphics2D g2 = (Graphics2D) g;
        
        // Draw the vertical lines
        int xPos = boardLeftX + boardSize/3;
        Line2D.Double vertical1 = new Line2D.Double(xPos, boardTopY, xPos, boardTopY+boardSize);
        
        xPos = boardLeftX + 2*boardSize/3;
        Line2D.Double vertical2 = new Line2D.Double(xPos, boardTopY, xPos, boardTopY+boardSize);
        
        // Draw the horizontal lines
        int yPos = boardTopY + boardSize/3;
        Line2D.Double horizontal1 = new Line2D.Double(boardLeftX, yPos, boardLeftX+boardSize, yPos);
        
        yPos = boardTopY + 2*boardSize/3;
        Line2D.Double horizontal2 = new Line2D.Double(boardLeftX, yPos, boardLeftX+boardSize, yPos);        
       
        // Draw the lines
        g2.setColor(Color.BLACK);
        g2.draw(vertical1);
        g2.draw(vertical2);
        g2.draw(horizontal1);
        g2.draw(horizontal2);
        
        // draw an X in the upper left corner
        int xPos2 = boardLeftX + boardSize/3 - spaceAmount;
        int yPos2 = boardTopY + boardSize/3 - spaceAmount;
        
        g2.draw(new Line2D.Double(boardLeftX + spaceAmount, boardTopY + spaceAmount, xPos2, yPos2));
        
        xPos = xPos2;
        yPos = boardTopY + spaceAmount;
        xPos2 = boardLeftX + spaceAmount;
        
        g2.draw(new Line2D.Double(xPos, yPos, xPos2, yPos2));
        
        // draw an O to its right
        int diameter = boardSize/3 - 2* spaceAmount;
        Ellipse2D.Double circle = new Ellipse2D.Double(boardTopY + boardSize/3 + spaceAmount, 
            boardLeftX + spaceAmount, diameter, diameter);
        g2.draw(circle);
    }
}