// Mr Greenstein
// March 17, 2014
// ShowImage.java
// This program shows:
//
//		1. Using a null layout
//		2. loading an image from a file and displays it to the screen.
//		3. implementing a JLabel component

import java.awt.*;			// for classes Image, Graphics, Color
import java.awt.event.*;	// for classes KeyListener, MouseListener
import javax.swing.*;		// for class JFrame

////////////////////////////////////////////////////////
// 2. Add imports for classes File, IOExcaption, ImageIO
//
 
public class ShowImage 
{
 
	private JFrame frame;
	private DrawingArea canvas;		// JPanel to draw images
	////////////////////////////////////////////////////////
	// 2. Declare image object
	
	////////////////////////////////////////////////////////
	// 3. Declare JLabel object
	
	private int xpos, ypos;
	private boolean keyClear;
	
	private int sizeX = 217, sizeY = 301; // Calvin
	////////////////////////////////////////////////////////
	// 2. Provide Filename
	
	public ShowImage ( )   
    	{
		xpos = ypos = 220;		// center the picture in the frame
		keyClear = true;
	}
	
	public static void main (String[] args) 
    	{
		ShowImage si = new ShowImage();
		si.Run();
	}
 
	public void Run( )  
    	{
		// Create the JFrame
		frame = new JFrame("ShowImage");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		////////////////////////////////////////////////////////
		// 1. Set the JFrame to a null layout
				
		////////////////////////////////////////////////////////
		// 3. Initialize JLabel and add to frame

		// Create the JPanel canvas
		canvas = new DrawingArea ( );
		canvas.setBackground( Color.gray );
		
		// Get the Image from a file
		GetMyImage();

		frame.getContentPane().add( canvas );
		frame.addKeyListener(canvas);
		////////////////////////////////////////////////////////
		// 1. Set the location and size of the canvas
		
		////////////////////////////////////////////////////////
		// 3. Set the location and size of the label

		frame.setBackground(Color.gray);
		frame.setSize(800, 800);
		frame.setLocation(300, 0);
		frame.setResizable(false);
		frame.setVisible(true);
	}

	public void GetMyImage() 
    	{
		///////////////////////////////////////////////////
		// 2. Create a try-catch block for loading the image

	}
	
	// canvas 
	class DrawingArea extends JPanel implements MouseListener, KeyListener 
    	{
		public DrawingArea ( )   
        	{
			addMouseListener (this);
			addKeyListener (this);
		}

		public void paintComponent ( Graphics g ) 
        	{
			if (keyClear) super.paintComponent ( g );	// blank the canvas
			///////////////////////////////////////////////////////////
			// 2. Draw the image that was loaded

			keyClear = false;
		}

		// Mouse methods
		public void mousePressed ( MouseEvent e )   
        	{
			xpos = e.getX ( ) - 135;
			ypos = e.getY ( ) - 90;
			repaint ( );
		}
		public void mouseClicked ( MouseEvent e )    {}
		public void mouseReleased ( MouseEvent e )    {}
		public void mouseEntered ( MouseEvent e )    {}
		public void mouseExited ( MouseEvent e )    {}
		
		// Key methods
		public void keyPressed (KeyEvent e) 
        	{
			int code = e.getKeyCode();
			// pressing space or shift will clear the screen
			if (code == 32 || code == 16) 
            		{
				keyClear = true;
				repaint();
			}
		}
		public void keyTyped (KeyEvent e) {}
		public void keyReleased (KeyEvent e) {}
	}
}