import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
 
public class View extends JApplet 
{
	private ImagePanel panel1;
	private AllButtonsPanel panel2;
	private JSlider bottom;
	private JScrollBar left;
	private JRadioButton one, two, three, four; 
	private int width, height, value;
	private boolean yessnow, yesgrid;
 
	public void init ( )  
    	{
		yessnow = yesgrid = false;
		width = 300;
		height = 600;
		Container contentPane = getContentPane();
        	contentPane.setLayout ( new GridLayout ( 1, 2, 5, 5 ) );
		contentPane.setBackground ( Color.black );
   
		panel1 = new ImagePanel ( );
      		panel1.setBackground( Color.blue );
        	contentPane.add ( panel1 );

		panel2 = new AllButtonsPanel ( );
      		panel2.setBackground( Color.red );
        	contentPane.add ( panel2 );
	}
 
	class ImagePanel extends JPanel implements ChangeListener, AdjustmentListener   
    	{
		private Image [] image;

		public ImagePanel ( )   
        	{
			this.setLayout ( new BorderLayout ( ) );

			value = 0;
			image = new Image[4];		
			for ( int i = 0; i < image.length; i++ )   
            		{
				image[i] = getImage ( getDocumentBase ( ), "pic" + i + ".jpg" );
				WaitForImage ( this, image[i] );
			}

       			bottom = new JSlider ( JSlider.HORIZONTAL, 0, 300, 300 );
       			this.add ( bottom, BorderLayout.SOUTH );
       			bottom.addChangeListener ( this );

			left = new JScrollBar ( JScrollBar.VERTICAL, 600, 0, 0, 600 );
			left.addAdjustmentListener ( this );
			this.add ( left, BorderLayout.WEST );
		}

		public void WaitForImage ( JPanel component, Image image )   
        	{
			MediaTracker tracker = new MediaTracker ( component );
			try  
            		{
				tracker.addImage ( image, 0 );
				tracker.waitForID ( 0 );
			}
			catch ( InterruptedException e )   
            		{
				e.printStackTrace ( );   
			}
		}

		public void paintComponent ( Graphics g ) 
        	{
			super.paintComponent ( g );
			g.drawImage ( image[value], 0, 0, width, height, this );
			if ( yesgrid )  
            		{
				g.setColor ( Color.white );
				for ( int i = 0; i < 10; i++ )
					g.fillRect ( (int)(i * (double)width / 10), 0, 2, height );
				for ( int i = 0; i < 10; i++ )
					g.fillRect ( 0, (int)(i * (double)height / 10), width, 2 );
			}
			if ( yessnow )  
            		{
				g.setColor ( Color.white );
				for ( int i = 0; i < 200; i++ )   
                		{
					int x = (int)(Math.random() * width);
					int y = (int)(Math.random() * height);
					g.fillOval ( x, y, 6, 6 );
				}
			}
		}

   		public void stateChanged ( ChangeEvent evt )   
        	{
       			width = bottom.getValue();
			this.repaint ( );
   		}

		public void adjustmentValueChanged( AdjustmentEvent e)
        	{
			height = left.getValue();
			this.repaint();
		}
	}
 
	class AllButtonsPanel extends JPanel 
    	{
		RadioPanel rpanel;
		ButtonPanel bpanel;

		public AllButtonsPanel ( )   
        	{
        		this.setLayout ( new GridLayout ( 2, 1, 5, 5 ) );

			rpanel = new RadioPanel ( );
      			rpanel.setBackground( Color.yellow );
        		this.add ( rpanel );

			bpanel = new ButtonPanel ( );
      			bpanel.setBackground( Color.darkGray );
        		this.add ( bpanel );
		}

		public void paintComponent ( Graphics g ) 
        	{
			super.paintComponent ( g );
		}
	} 

	class RadioPanel extends JPanel implements ActionListener   
    	{

		public RadioPanel ( )   
        	{
  			this.setLayout( new GridLayout ( 4, 1 ) );
      
      			ButtonGroup imageGroup = new ButtonGroup();
      
     	 		one = new JRadioButton ( "FIRST IMAGE" );
      			imageGroup.add ( one );
      			one.addActionListener ( this );
      			this.add ( one );

     	 		two = new JRadioButton ( "SECOND IMAGE" );
      			imageGroup.add ( two );
      			two.addActionListener ( this );
      			this.add ( two );

     	 		three = new JRadioButton ( "THIRD IMAGE" );
      			imageGroup.add ( three );
      			three.addActionListener ( this );
      			this.add ( three );

     	 		four = new JRadioButton ( "FOURTH IMAGE" );
      			imageGroup.add ( four );
      			four.addActionListener ( this );
      			this.add ( four );

		}

		public void paintComponent ( Graphics g ) 
        	{
			super.paintComponent ( g );
		}

   		public void actionPerformed ( ActionEvent evt ) 
        	{
      			if ( one.isSelected() )
         			value = 0;
      			else if ( two.isSelected() )
				value = 1;
      			else if ( three.isSelected() )
				value = 2;
      			else if ( four.isSelected() )
				value = 3;
			panel1.repaint ( );
		}
	}

	class ButtonPanel extends JPanel implements ActionListener   
    	{
		JButton snow, grid, reset;

		public ButtonPanel ( )   
        	{
  			this.setLayout( new FlowLayout ( FlowLayout.LEFT, 140, 50 ) );

			snow = new JButton ( "SNOW" );
       			snow.addActionListener ( this );  
       			this.add ( snow );

			grid = new JButton ( "GRID" );
       			grid.addActionListener ( this );  
       			this.add ( grid );

			reset = new JButton ( "RESET" );
       			reset.addActionListener ( this );  
       			this.add ( reset );

			one.setSelected(true); 
		}

		public void paintComponent ( Graphics g ) 
        	{
			super.paintComponent ( g );
		}

   		public void actionPerformed ( ActionEvent evt ) 
        	{
      			String command = evt.getActionCommand();

                     	if ( command.equals ( "SNOW" ) )   
                        {
				yessnow = true;
				panel1.repaint ( );
			}
                     	else if ( command.equals ( "GRID" ) )   
                        {
				yesgrid = true;
				panel1.repaint ( );
			}
      			else if ( command.equals ( "RESET" ) )   
                	{
				value = 0;
				width = 300;
				height = 600;
				yessnow = yesgrid = false;
				left.setValue ( 600 );
				bottom.setValue ( 300 );
				one.setSelected(true); 
				panel1.repaint ( );
			}
   		}

	}
 }