src_Shapes.java

import javax.swing.*;
import java.awt.*;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.util.ArrayList;


/**
 * Created with IntelliJ IDEA.
 * User: Pawel
 * Date: 17.03.13
 * Time: 09:02
 */
public class Shapes extends JPanel implements MouseListener, MouseMotionListener {

    public static final int IDLE = -99;
    public static final int TOP_LEFT = 1;
    public static final int TOP_RIGHT = 2;
    public static final int BOTTOM_RIGHT=3;
    public static final int BOTTOM_LEFT =4;


    private ArrayList<Shape> shapes;
    private int flag = IDLE;
    private Rectangle[] selection ;
    private int direction = 0;
    private Rectangle startPos;
    private Rectangle startRect;
    private Point pressedPoint;
    private StatusBar statusBar;
    private JList list;

    public Shapes() {
        shapes = new ArrayList<Shape>();
        shapes.add(new Rectangle(100,100,50,50));
        shapes.add(new Rectangle(300,200,120,90));
        selection = new Rectangle[]{new Rectangle(),new Rectangle(),new Rectangle(),new Rectangle()};
        statusBar = new StatusBar();
        list = new JList(shapes.toArray());
        list.setSize(20,200);
        add(list, BorderLayout.SOUTH);
        add(statusBar,BorderLayout.SOUTH);
        addMouseListener(this);
        addMouseMotionListener(this);
    }

    public static void main(String [] args)
     {
         JFrame frame = new JFrame("Shapes");
         frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         frame.setSize(800, 600);
         frame.setLocationRelativeTo(null);
         frame.setVisible(true);
         frame.add(new Shapes(),BorderLayout.CENTER);
     }

    @Override
    protected void paintComponent(Graphics graphics) {
        super.paintComponent(graphics);
        Graphics2D g2D = (Graphics2D) graphics;
        g2D.setColor(Color.RED);
        for(int i=0;i<shapes.size();i++)
        {
            g2D.fill(shapes.get(i));
            if(flag == i){
               select(shapes.get(i));
               g2D.setColor(Color.GRAY);
                for(int j=0;j<selection.length;j++)
                    g2D.fill(selection[j]);
                g2D.setColor(Color.RED);
            }
        }
    }

    private void select(Shape shape) {
        Rectangle bounds = shape.getBounds();
        double x = bounds.getX();
        double y = bounds.getY();
        double width = bounds.getWidth();
        double height = bounds.getHeight();
        selection[0].setRect(x - 3, y - 3, 6, 6);
        selection[1].setRect(x + width - 3, y - 3, 6, 6);
        selection[2].setRect(x+width-3,y+height-3,6,6);
        selection[3].setRect(x-3,y+height-3,6,6);
    }

    @Override
    public void mouseClicked(MouseEvent mouseEvent) {
        Point p = mouseEvent.getPoint();
        if(flag == IDLE)
            for(int i=0;i<shapes.size();i++)
            {
                if(shapes.get(i).contains(p)) {
                    flag = i;
                    startRect = shapes.get(flag).getBounds();
                    break;
                }
            }
        else
            flag = IDLE;
        repaint();
    }

    @Override
    public void mousePressed(MouseEvent mouseEvent) {
        Point p = mouseEvent.getPoint();
        if(flag != IDLE) {
            for(int i=0;i<selection.length;i++)
            {
                if(selection[i].contains(p)){
                    direction = i + 1;
                    startPos = selection[i].getBounds();
                    break;
                }
            }
        } else{
            for(int i=0;i<shapes.size();i++)
            {
                if(shapes.get(i).contains(p)) {
                    flag = i;
                    pressedPoint = p;
                    startRect = shapes.get(i).getBounds();
                    break;
                }
            }
        }
    }

    @Override
    public void mouseReleased(MouseEvent mouseEvent) {
           if(direction>0)
               direction = 0;
            if(flag!=IDLE)
                flag = IDLE;
    }

    @Override
    public void mouseEntered(MouseEvent mouseEvent) {

    }

    @Override
    public void mouseExited(MouseEvent mouseEvent) {

    }

    @Override
    public void mouseDragged(MouseEvent mouseEvent) {
        Point p = mouseEvent.getPoint();
        statusBar.setMessage("x = " + p.x + " y = "+ p.y + " flag = " + flag);
        if(direction > 0) {
            Rectangle rect = ((Rectangle)shapes.get(flag));
            int dx = startPos.x - p.x;
            int dy = startPos.y - p.y;
            switch(direction)
            {
                case TOP_LEFT:
                    rect.setBounds(startRect.x - dx, startRect.y - dy,startRect.width + dx, startRect.height + dy);
                    break;
                case TOP_RIGHT:
                    rect.setBounds(startRect.x, startRect.y - dy,startRect.width - dx, startRect.height + dy);
                    break;
                case BOTTOM_RIGHT:
                    rect.setSize(startRect.width - dx, startRect.height - dy);
                    break;
                case BOTTOM_LEFT:
                    rect.setBounds(startRect.x - dx, startRect.y,startRect.width + dx, startRect.height - dy);
                    break;
            }
        } else if (flag != IDLE){
            Rectangle rect = ((Rectangle)shapes.get(flag));
            int dx = pressedPoint.x - startRect.x;
            int dy = pressedPoint.y - startRect.y;
            rect.setBounds(p.x - dx, p.y - dy, rect.width, rect.height);
        }
        repaint();
    }

    @Override
    public void mouseMoved(MouseEvent mouseEvent) {
        Point p = mouseEvent.getPoint();
        statusBar.setMessage("x = " + p.x + " y = "+ p.y + " flag = " + flag);
    }

}

src_StatusBar.java

import javax.swing.*;
import java.awt.*;

/**
 * Created with IntelliJ IDEA.
 * User: Pawel
 * Date: 17.03.13
 * Time: 16:43
 */
public class StatusBar extends JLabel {

    public StatusBar() {
        super();
        super.setPreferredSize(new Dimension(200, 16));
        setMessage("Ready");
    }

    public void setMessage(String message) {
        setText(" "+message);
    }
}