import java.awt.Button;
import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Panel;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;


public class Zad1 extends Frame{


    /**
     *
     */
    private static final long serialVersionUID = 1L;
    /**
     *
     */


    Canvas canvas = null;
    boolean selected = false;
    Frame frame = null;
    Panel panel = new Panel();
    public Zad1() {

        setLayout(new FlowLayout());
        setTitle("Zadanie 1");
        setPreferredSize(new Dimension(400,400));
    frame = this;
    canvas = getCanvas(75,50);
    canvas.setPreferredSize(new Dimension(390, 300));
    add(canvas);
    add(getButton());
    pack();
    setLocationRelativeTo(null);

    addWindowListener(new WindowListener() {
        public void windowClosing(WindowEvent e) {
            // TODO Auto-generated method stub
            System.exit(0);

    }

        @Override
        public void windowActivated(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowClosed(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowDeactivated(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowDeiconified(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowIconified(WindowEvent e) {
            // TODO Auto-generated method stub

        }

        @Override
        public void windowOpened(WindowEvent e) {
            // TODO Auto-generated method stub

        }
    });
    }
    /**
    * Metoda obslugująca rysowanie
    * x - pozycja x
    * y - pozycja y
    *
    */
    public Canvas getCanvas(final int x, final int y)
    {
    Canvas canvas = new Canvas()
    {
    private static final long serialVersionUID = 1L;
    public void paint(Graphics g)
    {
    //rysowanie lini
    Dimension d = getSize();
    g.drawLine(0, 0, d.width, d.height);
    g.drawLine(d.width, 0, 0, d.height);
    //dodatki
    if(selected)
    {
    setBackground(new Color(50, 100, 150));
    g.drawString("Test Środowiska GUI", x, y); //75, 50
    g.setColor(Color.blue);
    g.fillOval(x+35, y+20, 50, 50);
    g.setColor(Color.red);
    g.drawRoundRect(x-10, y-20, 140, 30, 20, 20);
    }
    else
    setBackground(new Color(255, 255, 255));
    }
    };
    return canvas;
    }
    /**
    * Przycisk rysowania/czyszczenia
    *
    */
    public Button getButton()
    {
    final Button button = new Button("Rysuj");
    button.addActionListener(new ActionListener()
    {
    @Override
    public void actionPerformed(ActionEvent e) {
    if(selected==false)
    {
    selected=true;
    button.setLabel("Czyść");
    }
    else
    {
    selected = false;
    button.setLabel(" Rysuj ");
    }
    //odswiezenie
    Rectangle rect = frame.getBounds();
    canvas.repaint(rect.x, rect.y, rect.width, rect.height);
    }
    });
    return button;
    }

    public static void main(String[] args) {
    new Zad1().setVisible(true);

    }

}