Feature: Show progress bar in systray icon

src/com/sheepit/client/Gui.java

@@ -26,6 +26,8 @@ public interface Gui {
 	
 	public void status(String msg_);
 
+	public void updateTrayIcon(Integer percentage_);
+
 	public void setRenderingProjectName(String name_);
 	
 	public void setRemainingTime(String time_);

src/com/sheepit/client/Job.java

@@ -40,6 +40,8 @@ import java.util.Observer;
 import java.util.TimeZone;
 import java.util.Timer;
 import java.util.TimerTask;
+import java.util.regex.Pattern;
+import java.util.regex.Matcher;
 
 import com.sheepit.client.Configuration.ComputeType;
 import com.sheepit.client.Error.Type;
@@ -55,6 +57,8 @@ public class Job {
 	public static final String UPDATE_METHOD_BLENDER_INTERNAL_BY_PART = "blenderinternal";
 	public static final String UPDATE_METHOD_BY_TILE = "by_tile";
 
+	public static final int SHOW_BASE_ICON = -1;
+
 	private String frameNumber;
 	private String sceneMD5;
 	private String rendererMD5;
@@ -271,9 +275,18 @@ public class Job {
 			
 			log.debug("renderer output");
 			try {
+				int progress = -1;
+
+				Pattern tilePattern  = Pattern.compile(" ([0-9]+)\\s?\\/\\s?([0-9]+) ");
+
+				// Initialise the progress bar in the icon (0% completed at this time)
+				gui.updateTrayIcon(0);
+
 				while ((line = input.readLine()) != null) {
 					log.debug(line);
 
+					progress = computeRenderingProgress(line, tilePattern, progress);
+
 					updateRenderingMemoryPeak(line);
 					if (configuration.getMaxMemory() != -1 && process.getMemoryUsed() > configuration.getMaxMemory()) {
 						log.debug("Blocking render because process ram used (" + process.getMemoryUsed() + "k) is over user setting (" + configuration.getMaxMemory() + "k)");
@@ -282,6 +295,11 @@ public class Job {
 						if (script_file != null) {
 							script_file.delete();
 						}
+
+						// Once the process is finished (either finished successfully or with an error) move back to
+						// base icon (isolated S with no progress bar)
+						gui.updateTrayIcon(Job.SHOW_BASE_ICON);
+
 						return Error.Type.RENDERER_OUT_OF_MEMORY;
 					}
 					
@@ -291,6 +309,10 @@ public class Job {
 						if (script_file != null) {
 							script_file.delete();
 						}
+
+						// Put back base icon
+						gui.updateTrayIcon(Job.SHOW_BASE_ICON);
+
 						return error;
 					}
 
@@ -304,6 +326,10 @@ public class Job {
 				// most likely The handle is invalid
 				log.error("Job::render exception(B) (silent error) " + err1);
 			}
+
+			// Put back base icon
+			gui.updateTrayIcon(Job.SHOW_BASE_ICON);
+
 			log.debug("end of rendering");
 		}
 		catch (Exception err) {
@@ -398,6 +424,25 @@ public class Job {
 		return Error.Type.OK;
 	}
 
+	private int computeRenderingProgress(String line, Pattern tilePattern, int currentProgress) {
+		Matcher standardTileInfo = tilePattern.matcher(line);
+		int newProgress = currentProgress;
+
+		if (standardTileInfo.find()) {
+			int tileJustProcessed = Integer.parseInt(standardTileInfo.group(1));
+			int totalTilesInJob  = Integer.parseInt(standardTileInfo.group(2));
+
+			newProgress = Math.abs((tileJustProcessed * 100) / totalTilesInJob);
+		}
+
+		// Only update the tray icon if percentage has changed
+		if (newProgress != currentProgress) {
+			gui.updateTrayIcon(newProgress);
+		}
+
+		return newProgress;
+	}
+
 	private void updateRenderingStatus(String line) {
 		if (getUpdateRenderingStatusMethod() != null && getUpdateRenderingStatusMethod().equals(Job.UPDATE_METHOD_BLENDER_INTERNAL_BY_PART)) {
 			String search = " Part ";

src/com/sheepit/client/standalone/GuiSwing.java

@@ -31,16 +31,21 @@ import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.WindowEvent;
 import java.awt.event.WindowStateListener;
+import java.awt.image.BufferedImage;
 import java.net.URL;
+import java.nio.Buffer;
 import java.util.Timer;
 import java.util.TimerTask;
 
+import java.io.IOException;
+
 import javax.swing.ImageIcon;
 import javax.swing.JFrame;
 import javax.swing.JPanel;
 import javax.swing.UIManager;
 import javax.swing.UnsupportedLookAndFeelException;
 import javax.swing.border.EmptyBorder;
+import javax.imageio.ImageIO;
 
 import com.sheepit.client.Client;
 import com.sheepit.client.Configuration;
@@ -72,6 +77,9 @@ public class GuiSwing extends JFrame implements Gui {
 	private boolean waitingForAuthentication;
 	private Client client;
 
+	private BufferedImage iconSprites;
+	private BufferedImage[] trayIconSprites;
+
 	@Getter
 	@Setter
 	private SettingsLoader settingsLoader;
@@ -121,10 +129,18 @@ public class GuiSwing extends JFrame implements Gui {
 			}
 		}
 
-		URL iconUrl = getClass().getResource("/icon.png");
-		if (iconUrl != null) {
-			ImageIcon img = new ImageIcon(iconUrl);
-			setIconImage(img.getImage());
+		// load the images sprite and split into individual images
+		URL spriteSequenceUrl = getClass().getResource("/icon-sprites.png");
+
+		if (spriteSequenceUrl != null) {
+			try {
+				iconSprites = ImageIO.read(spriteSequenceUrl);
+				trayIconSprites = new BufferedImage[101 * 1];			// sprite sheet has 101 images in 1 column
+
+				setIconImage(extractImageFromSprite(-1));	// sprite 0 is standard Sheep It! icon
+			} catch (IOException e) {
+				e.printStackTrace();
+			}
 		}
 
 		setTitle(title);
@@ -304,8 +320,8 @@ public class GuiSwing extends JFrame implements Gui {
 	public TrayIcon getTrayIcon() {
 		final PopupMenu trayMenu = new PopupMenu();
 
-		URL iconUrl = getClass().getResource("/icon.png");
-		Image img = Toolkit.getDefaultToolkit().getImage(iconUrl);
+		// on start, show the base icon
+		Image img = extractImageFromSprite(-1);
 		final TrayIcon icon = new TrayIcon(img);
 		
 		MenuItem exit = new MenuItem("Exit");
@@ -351,6 +367,35 @@ public class GuiSwing extends JFrame implements Gui {
 		
 	}
 
+	private Image extractImageFromSprite(int spriteNumber) {
+		// Sprite structure
+		// Image 0: base sprite
+		// Images 1-101: progress bar percentage from 0 to 100
+		//
+		// Always add +1 to the icon requested.
+		// -1 turns into 0 (base sprite with no progress bar)
+		// 0 to 101 turns into 1 to 101 (progress sequence starts in sprite 1 and ends on sprite 101)
+		ImageIcon img = new ImageIcon(iconSprites.getSubimage(0, (spriteNumber + 1) * 114, 114, 114));
+
+		return img.getImage();
+	}
+
+	@Override
+	public void updateTrayIcon(Integer percentage) {
+		// update the app icon on the app bar
+		Image img = extractImageFromSprite(percentage);
+		setIconImage(img);
+
+		// if the app supports the system tray, update as well
+		if (sysTray != null && SystemTray.isSupported()) {
+			if (trayIcon != null) {
+				trayIcon.setImage(img);
+				trayIcon.setImageAutoSize(true);		// use this method to ensure that icon is refreshed when on
+														// the tray
+			}
+		}
+	}
+
 	public class ThreadClient extends Thread {
 		@Override
 		public void run() {

src/com/sheepit/client/standalone/GuiText.java

@@ -89,6 +89,10 @@ public class GuiText implements Gui {
 		Runtime.getRuntime().halt(0);
 	}
 
+	@Override
+	public void updateTrayIcon(Integer percentage) {
+	}
+
 	@Override
 	public void status(String msg_) {
 		System.out.println(msg_);

src/com/sheepit/client/standalone/GuiTextOneLine.java

@@ -95,6 +95,10 @@ public class GuiTextOneLine implements Gui {
 		Runtime.getRuntime().halt(0);
 	}
 
+	@Override
+	public void updateTrayIcon(Integer percentage) {
+	}
+
 	@Override
 	public void status(String msg_) {
 		status = msg_;