package elte.java2_utikalauz5.java2d;

import java.awt.*;
import java.awt.geom.*;
import java.awt.event.*;

/**
peldaprogram az egyszeru elemek hasznalatara.

@link.forrásfájl {@docRoot}/../data/java2d/src EgyszeruElemek.java
@link.letöltés {@docRoot}/../data/java2d EgyszeruElemek.jar
@since Java 2 Útikalauz programozóknak
*/
class EgyszeruElemek extends Canvas implements ActionListener {
    /** Verziószám */
    private final static long serialVersionUID = 15L;

	Button gomb1 = new Button ("Ellipszis");
	Button gomb2 = new Button ("Koriv");
	Button gomb3 = new Button ("Lekerekitett teglalap");
	Button gomb4 = new Button ("Teglalap");
	Button gomb5 = new Button ("Vonal");

	int type = 0;

	public void initScreen () {
		Frame f = new Frame ();
		Panel p = new Panel ();

		p.setLayout (new FlowLayout ());
		p.add (gomb1);
		p.add (gomb2);
		p.add (gomb3);
		p.add (gomb4);
		p.add (gomb5);

		f.add (this);
		f.add ("South", p);

		gomb1.addActionListener (this);
		gomb2.addActionListener (this);
		gomb3.addActionListener (this);
		gomb4.addActionListener (this);
		gomb5.addActionListener (this);

		f.addWindowListener (
			new WindowAdapter () {
				public void windowClosing (WindowEvent e) {
					System.exit (0);
				}
			}
		);

		f.setSize (500, 300);
		f.setVisible (true);
	}

	public void paint (Graphics g) {
		Graphics2D g2 = (Graphics2D) g;

		Ellipse2D ellipszis = new Ellipse2D.Float (250.0f, 100.0f, 50.0f, 100.0f);
		Arc2D koriv = new Arc2D.Float (250.0f, 100.0f, 50.0f, 100.0f, 0.0f, 120.0f, Arc2D.OPEN);
		Rectangle2D teglalap = new Rectangle2D.Float (250.0f, 100.0f, 50.0f, 100.0f);
		RoundRectangle2D lekerekitettTeglalap
			= new RoundRectangle2D.Float (250.0f, 100.0f, 50.0f, 100.0f, 10.0f, 10.0f);
		Line2D vonal = new Line2D.Float (250.0f, 100.0f, 300.0f, 200.0f);

		g2.setColor (Color.blue);

		switch (type) {
			case 1: g2.draw (ellipszis); break;
			case 2: g2.draw (koriv); break;
			case 3: g2.draw (lekerekitettTeglalap); break;
			case 4: g2.draw (teglalap); break;
			case 5: g2.draw (vonal);
		}
	}

	public static void main (String[] args) {
		EgyszeruElemek e = new EgyszeruElemek ();
		e.initScreen ();
	}

	public void actionPerformed (ActionEvent e) {
		if (e.getActionCommand ().compareTo ("Ellipszis") == 0)
			type = 1;
		else
		if (e.getActionCommand ().compareTo ("Koriv") == 0)
			type = 2;
		else
		if (e.getActionCommand ().compareTo ("Lekerekitett teglalap") == 0)
			type = 3;
		else
		if (e.getActionCommand ().compareTo ("Teglalap") == 0)
			type = 4;
		else
			type = 5;

		repaint ();
	}

}