Feature: include app version in Settings screen (#247)

src/com/sheepit/client/standalone/swing/activity/Settings.java

@@ -19,6 +19,7 @@
 
 package com.sheepit.client.standalone.swing.activity;
 
+import java.awt.Graphics;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.GridLayout;
@@ -26,12 +27,15 @@ import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.KeyEvent;
 import java.awt.event.KeyListener;
+import java.awt.image.BufferedImage;
 import java.io.File;
+import java.io.IOException;
 import java.net.MalformedURLException;
 import java.util.Hashtable;
 import java.util.LinkedList;
 import java.util.List;
 
+import javax.imageio.ImageIO;
 import javax.swing.BorderFactory;
 import javax.swing.Box;
 import javax.swing.BoxLayout;
@@ -119,10 +123,27 @@ public class Settings implements Activity {
 		
 		GridBagConstraints constraints = new GridBagConstraints();
 		int currentRow = 0;
-		ImageIcon image = new ImageIcon(getClass().getResource("/sheepit-logo.png"));
+		
+		JLabel labelImage;
+		try {
+			// Include the version of the app as a watermark in the SheepIt logo.
+			final BufferedImage watermark = ImageIO.read(getClass().getResource("/sheepit-logo.png"));
+			
+			Graphics gph = watermark.getGraphics();
+			gph.setFont(gph.getFont().deriveFont(12f));
+			gph.drawString("v" + config.getJarVersion(), 335, 120);
+			gph.dispose();
+			
+			labelImage = new JLabel(new ImageIcon(watermark));
+		}
+		catch (Exception e) {
+			// If something fails, we just show the SheepIt logo (without any watermark)
+			ImageIcon image = new ImageIcon(getClass().getResource("/sheepit-logo.png"));
+			labelImage = new JLabel(image);
+		}
+		
 		constraints.fill = GridBagConstraints.CENTER;
 		
-		JLabel labelImage = new JLabel(image);
 		constraints.gridwidth = 2;
 		constraints.gridx = 0;
 		constraints.gridy = currentRow;