Settings.java

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.util.ArrayList;

import javax.imageio.ImageIO;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;


/**
 * This class is responsible for the display of the settings screen. Any changed settings are sent to the Renderer class via the Navigation class
 *
 */
@SuppressWarnings("serial")
public class Settings extends JPanel {
	
	//class variables
		private JButton play;
		private JButton menu;
		private JButton easy;
		private JButton medium;
		private JButton hard;
		private JButton few;
		private JButton many;
		private JButton lots;
	
		private Navigation navigator;
	
	/**
	 * Constructor for settings screen.
	 * 
	 * @param n Central navigation class
	 * @throws IOException
	 */
	public Settings(Navigation n) throws IOException {
		// Set navigator to the one passed in
		navigator = n;
		
		// Create buttons with icons in them + hover images
        ArrayList<JButton> buttonArray = new ArrayList<JButton>();//this is only to save me typing some lines of code later on --tom
	        play = new JButton(createImage("playP.png"));
	        play.setRolloverIcon(createImage("playA.png"));
	        buttonArray.add(play);
	
	        menu = new JButton(createImage("menuP.png"));
	        menu.setRolloverIcon(createImage("menuA.png"));
	        buttonArray.add(menu);
	
	        easy = new JButton(createImage("EasyP.png"));
	        easy.setRolloverIcon(createImage("EasyA.png"));
	        buttonArray.add(easy);
	
	        medium = new JButton(createImage("MediumP.png"));
	        medium.setRolloverIcon(createImage("MediumA.png"));
	        buttonArray.add(medium);
	
	        hard = new JButton(createImage("HardP.png"));
	        hard.setRolloverIcon(createImage("HardA.png"));
	        buttonArray.add(hard);
	
	        few = new JButton(createImage("FewP.png"));
	        few.setRolloverIcon(createImage("FewA.png"));
	        buttonArray.add(few);
	
	        many = new JButton(createImage("ManyP.png"));
	        many.setRolloverIcon(createImage("ManyA.png"));
	        buttonArray.add(many);
	
	        lots = new JButton(createImage("LotsP.png"));
	        lots.setRolloverIcon(createImage("LotsA.png"));
	        buttonArray.add(lots);
        
        for (JButton button: buttonArray){
        	button.setRolloverEnabled(true);
        	button.setBorderPainted(false);
        	button.setContentAreaFilled(false);
        	button.setBackground(Color.WHITE);
        	button.setAlignmentX(CENTER_ALIGNMENT);
        }

		// Set ActionListeners for settings buttons
		play.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				setVisible(false);
				navigator.showGame();
			}
		});
		

		menu.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				setVisible(false);
				navigator.showMenu();
			}
		});
		
		easy.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				setVisible(false);
				navigator.setDiff(60);
			}
		});
		medium.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				setVisible(false);
				navigator.setDiff(30);
			}
		});
		hard.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				setVisible(false);
				navigator.setDiff(15);
			}
		});
		few.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				setVisible(false);
				navigator.setNumSen(5);
			}
		});
		many.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				setVisible(false);
				navigator.setNumSen(15);
			}
		});
		lots.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent e) {
				setVisible(false);
				navigator.setNumSen(30);
			}
		});
		//make labels for settings
		JLabel eztxt  = new JLabel("", JLabel.CENTER);        
			eztxt.setText("Choose how complicated the maze should be");
			eztxt.setOpaque(true);
			eztxt.setBackground(Color.GREEN);
			eztxt.setForeground(Color.BLACK);
			eztxt.setAlignmentX(CENTER_ALIGNMENT);
			eztxt.setFont(eztxt.getFont().deriveFont((float)24));

		JLabel sentxt  = new JLabel("", JLabel.CENTER);        
			sentxt.setText("Choose how many sentries you want in the maze");
			sentxt.setOpaque(true);
			sentxt.setBackground(Color.GREEN);
			sentxt.setForeground(Color.BLACK);
			sentxt.setAlignmentX(CENTER_ALIGNMENT);
			sentxt.setFont(sentxt.getFont().deriveFont((float)24));
		//lay out jpanels for menu buttons
        JPanel boxdiff = new JPanel();
	        boxdiff.setOpaque(false);
	        boxdiff.setLayout(new BoxLayout(boxdiff, BoxLayout.LINE_AXIS));
	        boxdiff.setAlignmentX(CENTER_ALIGNMENT);
	        boxdiff.add(Box.createHorizontalGlue());
	        boxdiff.add(easy);
	        boxdiff.add(Box.createRigidArea(new Dimension(220, 0)));
	        boxdiff.add(medium);
	        boxdiff.add(Box.createRigidArea(new Dimension(220, 0)));
	        boxdiff.add(hard);
		
        JPanel boxsens = new JPanel();
	        boxsens.setOpaque(false);
	        boxsens.setLayout(new BoxLayout(boxsens, BoxLayout.LINE_AXIS));
	        boxsens.setAlignmentX(CENTER_ALIGNMENT);
	        boxsens.add(Box.createHorizontalGlue());
	        boxsens.add(few);
	        boxsens.add(Box.createRigidArea(new Dimension(250, 0)));
	        boxsens.add(many);
	        boxsens.add(Box.createRigidArea(new Dimension(250, 0)));
	        boxsens.add(lots);
		
		JPanel boxButtons = new JPanel();
			boxButtons.setOpaque(false);
			boxButtons.setLayout(new BoxLayout(boxButtons, BoxLayout.LINE_AXIS));
			boxButtons.add(Box.createHorizontalGlue());
			boxButtons.add(menu);
			boxButtons.add(Box.createRigidArea(new Dimension(300, 0)));
			boxButtons.add(play);
		
		
		// Create JPanel for title
		JPanel title = new JPanel();
			ImageIcon headerIcon = createImage("title.png");
			JLabel headerLabel = new JLabel(headerIcon, JLabel.CENTER);
			title.add(headerLabel,BorderLayout.CENTER);
			title.setOpaque(false);
		
		// Place components in a box layout
		Box box = Box.createVerticalBox();
			box.add(Box.createVerticalStrut(75));
			box.add(title);
			box.add(Box.createVerticalStrut(40));
			box.add(eztxt);
			box.add(boxdiff);
			box.add(Box.createVerticalStrut(40));
			box.add(sentxt);
			box.add(boxsens);
			box.add(Box.createVerticalStrut(40));
			box.add(boxButtons);
			add(box); 
        
        setBackground(Color.white);
        
        // Adding box containing components
        add(box, JPanel.CENTER_ALIGNMENT);
	}
	
	/**
	 * Helper function to create image to be drawn on JFrame.
	 * 
	 * @param path Image file name
	 * @return Image 
	 * @throws IOException
	 */
	protected static ImageIcon createImage(String path) throws IOException {
		java.net.URL imgURL = Menu.class.getResource(path);
		if (imgURL != null) {
			return new ImageIcon(ImageIO.read(imgURL));
		} else {
			System.err.println("Couldn't find file: " + path);
			return null;
		}
	}
	
	/**
	 * Overridden -- Draws the images onto the JFrame.
	 */
	@Override
	public void paintComponent(Graphics g) {
	    super.paintComponent(g);
		try {
			g.drawImage(createImage("background.png").getImage(), 0, 0, null);
		} catch (IOException e) {
			e.printStackTrace();
		}
	  }
}