GrEditor

package greditor;

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

class myListener implements WindowListener, ActionListener, MouseListener, MouseMotionListener {

    Fr1 f;

    myListener(Fr1 f) {
        this.f = f;
    }

    public void windowClosing(WindowEvent ev) {
        System.exit(0);
    }

    public void windowActivated(WindowEvent ev) {
    }

    public void windowClosed(WindowEvent ev) {
    }

    public void windowDeactivated(WindowEvent ev) {
    }

    public void windowDeiconified(WindowEvent ev) {
    }

    public void windowIconified(WindowEvent ev) {
    }

    public void windowOpened(WindowEvent ev) {
    }

    public void actionPerformed(ActionEvent ae) {
        String tmp = f.figure;
        f.figure = ((Button) ae.getSource()).getLabel().trim();
        f.m.setText(f.figure);

        if (f.figure.equals("Очистить")) {
            Graphics g = (f.p1).getGraphics();
            g.setColor(f.cB);
            g.fillRect(0, 0, f.p1.getWidth(), f.p1.getHeight());
        } else if (!f.figure.equals("Линия") && !f.figure.equals("Окружность") && !f.figure.equals("Прямоугольник")) {
            for (int i = 0; i < f.cb.length; i++) {
                //System.out.println(i);
                if (f.figure.equals("" + i)) {
                    //System.out.println(i);
                    f.cF = f.cm[i];
                    break;
                }
            }
            f.figure = tmp;
        }

    }

    public void mouseEntered(MouseEvent me) {
    }

    public void mouseClicked(MouseEvent me) {
    }

    public void mousePressed(MouseEvent me) {
        f.X = f.X1 = me.getX();
        f.Y = f.Y1 = me.getY();
    }

    public void mouseReleased(MouseEvent me) {
    }

    public void mouseExited(MouseEvent me) {
    }

    public void mouseMoved(MouseEvent me) {
    }

    public void mouseDragged(MouseEvent me) {
        Graphics g = ((Panel) me.getSource()).getGraphics();
        int x, x1, y, y1;
        if (f.figure.equals("Линия")) {
            //Color c = f.cF;
            g.setColor(f.cB);
            g.drawLine(f.X, f.Y, f.X1, f.Y1);
            g.setColor(f.cF);
            f.X1 = me.getX();
            f.Y1 = me.getY();
            g.drawLine(f.X, f.Y, f.X1, f.Y1);
            f.m.setText(f.figure + "  (" + f.X + "," + f.Y + ") - (" + f.X1 + "," + f.Y1 + ")");
        }
        if (f.figure.equals("Окружность")) {
            g.setColor(f.cB);
            if (f.X1 < f.X) {
                x1 = f.X;
                x = f.X1;
            } else {
                x1 = f.X1;
                x = f.X;
            }
            if (f.Y1 < f.Y) {
                y1 = f.Y;
                y = f.Y1;
            } else {
                y1 = f.Y1;
                y = f.Y;
            }
            g.drawOval(x, y, x1 - x, y1 - y);
            g.setColor(f.cF);
            f.X1 = me.getX();
            f.Y1 = me.getY();
            if (f.X1 < f.X) {
                x1 = f.X;
                x = f.X1;
            } else {
                x1 = f.X1;
                x = f.X;
            }
            if (f.Y1 < f.Y) {
                y1 = f.Y;
                y = f.Y1;
            } else {
                y1 = f.Y1;
                y = f.Y;
            }
            g.drawOval(x, y, x1 - x, y1 - y);

            f.m.setText(f.figure + "  (" + f.X + "," + f.Y + ") - (" + f.X1 + "," + f.Y1 + ")");
        }
        if (f.figure.equals("Прямоугольник")) {
            g.setColor(f.cB);
            g.drawRect(f.X, f.Y, f.X1 - f.X, f.Y1 - f.Y);
            g.setColor(f.cF);
            f.X1 = me.getX();
            f.Y1 = me.getY();
            g.drawRect(f.X, f.Y, f.X1 - f.X, f.Y1 - f.Y);
            f.m.setText(f.figure + "  (" + f.X + "," + f.Y + ") - (" + f.X1 + "," + f.Y1 + ")");
        }
    }

} // к классу myListener

class Fr1 extends Frame {

    Panel p, p1, p2, p3, p4;
    Button bt1, bt2, bt3, bt4;
    Button[] cb = new Button[8];
    Color[] cm = {Color.RED, Color.ORANGE, Color.YELLOW, Color.blue, Color.CYAN, Color.GREEN, Color.black, Color.WHITE};
    Label m;
    String figure = "";
    int X = 0, Y = 0, X1 = 0, Y1 = 0;
    Color cF = Color.black, cB = Color.white;

    Fr1(String s) {
        super(s);
        for (int i = 0; i < cb.length; i++) {
            cb[i] = new Button("" + i);
        }
        p = new Panel();
        p1 = new Panel();
        p2 = new Panel();
        p3 = new Panel();
        p4 = new Panel();
        bt1 = new Button("  Окружность  ");
        bt2 = new Button("  Прямоугольник  ");
        bt3 = new Button("  Линия  ");
        bt4 = new Button("  Очистить  ");
        m = new Label(" Заголовок! ");
        add(p);
        p.setLayout(new BorderLayout());
        p.add(m, BorderLayout.NORTH);
        p.add(p1, BorderLayout.CENTER);
        p.add(p2, BorderLayout.SOUTH);
        p.add(p3, BorderLayout.EAST);
        p3.add(p4, BorderLayout.NORTH);
        p2.add(bt1);
        p2.add(bt2);
        p2.add(bt3);
        p2.add(bt4);
        myListener ml = new myListener(this);
        p4.setLayout(new GridLayout(4, 2, 1, 1));
        for (int i = 0; i < cm.length; i++) {
            p4.add(cb[i]);
            cb[i].setBackground(cm[i]);
            cb[i].setForeground(cm[i]);
            cb[i].addActionListener(ml);
        }
        addWindowListener(ml);
        bt1.addActionListener(ml);
        bt2.addActionListener(ml);
        bt3.addActionListener(ml);
        bt4.addActionListener(ml);
        p1.addMouseListener(ml);
        p1.addMouseMotionListener(ml);
    }
}  // к классу Fr1

public class GrEditor {

    public static void main(String[] args) {
        Fr1 f = new Fr1("Моя программа");
        f.setSize(600, 600);
        f.setVisible(true);
    }

}