import java.awt.*;
import java.applet.Applet;
import java.awt.event.*;
/**
 * AI: Francisco Lara-Dammer 
 * Lab 8
 * This program receives input (an integer m) from a text field,
 * and draws the letter 'L' of height m (after hitting the ENTER key).
*/
public class Lab8 extends Applet implements KeyListener{

    boolean paint = false;
    int letterDimension;//This is for the height of the letter.
    TextField ts;
    int width;//This is for the width of your applet window
    int height;//This is for the width of your applet window

    public void init(){
	Label l = new Label("The height of your letter in pixels");
	ts = new TextField(4);

	//listens when your is located in the textfield area.
	ts.addKeyListener(this);

	add(l);
	add(ts);
    }
    
    public void paint(Graphics g){

	width = getSize().width;
	int height = getSize().height;

        if(paint){
	    //Let's draw the letter at the specified location.
	    drawLetterL(g, width/2, height/3, letterDimension);
	    
	}
	
    }

    public void keyPressed(KeyEvent evt){
	int keyCode = evt.getKeyCode();
	String t = "";
	Graphics g;
	if(keyCode == KeyEvent.VK_ENTER){
	    paint = true;
	    letterDimension = Integer.parseInt(ts.getText());
	    repaint();
	}
    }

    /**
     * Does nothing. Necessary to implement KeyListener.    
     */
    public void keyTyped(KeyEvent evt){
    }

    /**
     * Does nothing. Necessary to implement KeyListener.    
     */
    public void keyReleased(KeyEvent evt){
    }

    /**
     * Draws the letter L.
     */
    private void drawLetterL(Graphics g, int x, int y, int h){
        
	g.setColor(Color.red);
        g.fillRect(x,y, h/8, h);
        g.fillRect(x-h/8, y, 3*h/8, h/8);
        g.fillRect(x-h/8, y +h-h/8, (3*h)/4, h/8);
        g.fillRect(x-h/8+(3*h)/4-h/8, y +h-h/8-h/8, h/8, 2*h/8);
    }


}