Wordclock/simulation/src/de/c3ma/ollo/mockup/ui/WS2812Layout.java

package de.c3ma.ollo.mockup.ui;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;

import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;

import de.c3ma.ollo.LuaSimulation;

/**
 * created at 02.01.2018 - 12:57:02<br />
 * creator: ollo<br />
 * project: WS2812Emulation<br />
 * $Id: $<br />
 * 
 * @author ollo<br />
 */
public class WS2812Layout extends JFrame {

	/**
	 * 
	 */
	private static final long serialVersionUID = -6815557232118826140L;

	private ArrayList<String> mLines = new ArrayList<String>();
	private int mColumn = 0;
	private int mRow = 0;
	private Element[][] mElements;

    private LuaSimulation nodemcuSimu;

	public WS2812Layout(LuaSimulation nodemcuSimu) {
	    this.nodemcuSimu = nodemcuSimu;
    }

    public static WS2812Layout parse(File file, LuaSimulation nodemcuSimu) {
		WS2812Layout layout = null;
		try {
			BufferedReader br = new BufferedReader(new FileReader(file));
			try {
				String line = br.readLine();
				if (line != null) {
					layout = new WS2812Layout(nodemcuSimu);
				}

				while (line != null) {
					if (!line.startsWith("#")) {
						layout.mLines.add(line);
						layout.mRow++;
						layout.mColumn = Math.max(layout.mColumn, line.length());
					}
					/* get the next line */
					line = br.readLine();
				}

				/* parse each line */
				layout.parse();
				layout.createAndDisplayGUI();
			} finally {
				if (br != null) {
					br.close();
				}
			}
		} catch (IOException ioe) {

		}
		return layout;
	}

	private void createAndDisplayGUI() {
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);

		JPanel contentPane = new JPanel();
		contentPane.setLayout(new BorderLayout());
		contentPane.setBorder(BorderFactory.createLineBorder(Color.DARK_GRAY, 2));

		JPanel ledPanel = new JPanel();
		ledPanel.setBackground(Color.BLACK);
		ledPanel.setLayout(new GridLayout(this.mRow, this.mColumn, 10, 10));
		for (int i = 0; i < this.mRow; i++) {
			for (int j = 0; j < this.mColumn; j++) {
				if (this.mElements[i][j] != null) {
					ledPanel.add(this.mElements[i][j]);
				}
			}
		}
		contentPane.add(ledPanel, BorderLayout.CENTER);
		final JButton btnReboot = new JButton("Reboot");
		btnReboot.setActionCommand("Reboot simulation");
		btnReboot.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent ae) {
				JButton but = (JButton) ae.getSource();
				if (but.equals(btnReboot)) {
				    System.out.println("[Node] Restart");
		            nodemcuSimu.rebootTriggered();
				}
			}
		});
		contentPane.add(btnReboot, BorderLayout.SOUTH);

		setContentPane(contentPane);
		pack();
		setLocationByPlatform(true);
		setVisible(true);
	}

	private void parse() {
		this.mElements = new Element[this.mRow][this.mColumn];
		int row = 0;
		for (String line : this.mLines) {
			for (int i = 0; i < line.length(); i++) {
				char c = line.charAt(i);
				if ((('A' <= c) && (c <= 'Z')) || (('0' <= c) && (c <= '9')) || (c == 'Ä') || (c == 'Ö')
						|| (c == 'Ü')) {
					this.mElements[row][i] = new Element(c);
				} else {
					this.mElements[row][i] = new Element();
				}
				this.mElements[row][i].setColor(0, 0, 0);
			}
			row++;
		}
	}

	public class Element extends JLabel {

		/**
		 * 
		 */
		private static final long serialVersionUID = -3933903441113933637L;

		private boolean noText = false;

		/**
		 * Draw a simple rect
		 */
		public Element() {
			super();
			this.noText = true;
			this.setBackground(Color.BLACK);
		}

		/**
		 * Draw a character
		 * 
		 * @param character
		 *            to show
		 */
		public Element(char character) {
			super("" + character);
			setFont(new Font("Dialog", Font.BOLD, 24));
			setHorizontalAlignment(CENTER);
			// FIXME: Background color is not updated:
			this.setBackground(Color.BLACK);
		}

		public void setColor(int red, int green, int blue) {
			this.setForeground(new Color(red, green, blue));
			this.repaint();
		}

		@Override
		public String toString() {
			StringBuilder sb = new StringBuilder();
			if (noText) {
				sb.append(" ");
			} else {
				sb.append("" + this.getText());
			}
			sb.append("|" + Integer.toHexString(this.getForeground().getRed()) + " "
					+ Integer.toHexString(this.getForeground().getGreen()) + " "
					+ Integer.toHexString(this.getForeground().getBlue()));

			return sb.toString();
		}
	}

	public void updateLED(int index, int r, int g, int b) {
		if (mElements != null) {
			int i = (index / mColumn);
			int j = (index % mColumn);
			// Swap each second row
			if (i % 2 == 1) {
				j = (mColumn-1) - j;
			}
			if ((i < mElements.length) && (j < mElements[i].length) && (mElements[i][j] != null)) {
				Element curlbl = mElements[i][j];
				curlbl.setColor(r, g, b);
			}
		}
	}

}