import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.image.BufferedImage;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;

import javax.swing.JFrame;
import javax.swing.JPanel;

import com.sun.image.codec.jpeg.ImageFormatException;
import com.sun.image.codec.jpeg.JPEGCodec;
import com.sun.image.codec.jpeg.JPEGImageDecoder;

/**
 * Superclass PitchPanel. Carries out all rendering of pitch
 * jpegs and defines the high level repaint functionality.
 *
 * @author Adrien Martel
 *
 */
public class PitchPanel extends JPanel{
	
	private String pitchFilename = "";
	private BufferedImage myImage;
	protected PitchPanel pp;
	protected JFrame f;
	protected Graphics2D g2d;
	
	/**
	 * Constructor PitchPanel. Instantiates a new pitch and 
	 * appends it to a panel so that its subclasses can manipulate
	 * them accordingly.
	 *
	 * @param pitchFilename - the path of the pitch jpeg to be used
	 *
	 */
	public PitchPanel(String pitchFilename){
		super();
		this.pitchFilename = pitchFilename;
		f = new JFrame();	
		f.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
		//hidden for later display at half/full time
		f.setVisible(true);
		f.setResizable(false);		
	}
	/**
	 * Method BuggeredImage returns the currently loaded pitch
	 * jpeg.
	 * 
	 * @return the currently loaded pitch jpeg
	 * 
	 */
	protected BufferedImage getMyImage() {
		return myImage;
	}
	
	/**
	 * Method loadArrowImage. Loads the pitch.jpg graphic.
	 *
	 */
	protected void loadImage() {
		try {
			String filename = pitchFilename;
			FileInputStream in = new FileInputStream(filename);
			JPEGImageDecoder decoder = JPEGCodec.createJPEGDecoder(in);
			myImage = decoder.decodeAsBufferedImage();
			in.close();
		} catch (ImageFormatException ife) {
			System.out.println("Image source file invalid.");
		} catch (FileNotFoundException fnfe) {
			System.out.println("Could not locate image file.");
		} catch (IOException ioe) {
			System.out.println("Error reading image file.");
		}
	}
	
	
	/**
	 *
	 * Method paintComponent. Loads the jpeg then draws the current line reference by
	 * the curIndex field.
	 *
	 */
	public void paintComponent(Graphics g) {
		loadImage();
		BufferedImage bi = getMyImage();
		super.paintComponent(g);
		g2d = (Graphics2D) g;
		g2d.drawImage(bi, null, 0, 0);
	}

}