Use the same JLabel Logo on all Swing windows

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

@@ -32,10 +32,12 @@ import com.sheepit.client.standalone.swing.activity.Settings;
 import com.sheepit.client.standalone.swing.activity.Working;
 import lombok.Getter;
 import lombok.Setter;
+import org.jetbrains.annotations.NotNull;
 
 import javax.imageio.ImageIO;
 import javax.swing.ImageIcon;
 import javax.swing.JFrame;
+import javax.swing.JLabel;
 import javax.swing.JPanel;
 import javax.swing.JScrollPane;
 import javax.swing.SwingUtilities;
@@ -44,10 +46,14 @@ import javax.swing.UnsupportedLookAndFeelException;
 import javax.swing.border.EmptyBorder;
 import java.awt.AWTException;
 import java.awt.Dimension;
+import java.awt.FontMetrics;
+import java.awt.Graphics;
+import java.awt.Graphics2D;
 import java.awt.GridBagLayout;
 import java.awt.Image;
 import java.awt.MenuItem;
 import java.awt.PopupMenu;
+import java.awt.RenderingHints;
 import java.awt.SystemTray;
 import java.awt.TrayIcon;
 import java.awt.event.ActionEvent;
@@ -58,11 +64,58 @@ import java.awt.image.BufferedImage;
 import java.io.IOException;
 import java.lang.reflect.InvocationTargetException;
 import java.net.URL;
+import java.util.Objects;
 import java.util.Timer;
 import java.util.TimerTask;
 
 public class GuiSwing extends JFrame implements Gui {
 	public static final String type = "swing";
+	private static final String logoPath = "/sheepit-logo.png";
+
+	public static void drawVersionStringOnImage(final BufferedImage image, String versionString) {
+		var watermarkWidth = image.getWidth();
+		var watermarkHeight = image.getHeight();
+
+		Graphics2D gph = (Graphics2D) image.getGraphics();
+		// use anti aliasing to smooth version string
+		gph.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);
+		gph.setFont(gph.getFont().deriveFont(12f));
+
+		FontMetrics fontMetrics = gph.getFontMetrics();
+		// move text to the very right of the image respecting its length
+		int x = watermarkWidth - fontMetrics.stringWidth(versionString);
+		// the bottom of the image, but give enough headroom for descending letters like g
+		int y = watermarkHeight - fontMetrics.getMaxDescent();
+
+		gph.drawString(versionString, x, y);
+		gph.dispose();
+	}
+
+	@NotNull public static JLabel createLogoWithWatermark() {
+		final URL logoURL = GuiSwing.class.getResource(logoPath);
+
+		// If logo cannot be found, return dummy image
+		if (logoURL == null) {
+			System.err.println("Error: Unable to find logo " + logoPath);
+			return new JLabel();
+		}
+
+		JLabel labelImage;
+		try {
+			// Include the version of the app as a watermark in the SheepIt logo.
+			final BufferedImage watermark = ImageIO.read(logoURL);
+			String versionString = "v" + Configuration.jarVersion;
+			drawVersionStringOnImage(watermark, versionString);
+
+			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(logoURL);
+			labelImage = new JLabel(image);
+		}
+		return labelImage;
+	}
 
 	public enum ActivityType {
 		WORKING, SETTINGS

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

@@ -19,8 +19,6 @@
 
 package com.sheepit.client.standalone.swing.activity;
 
-import java.awt.FontMetrics;
-import java.awt.Graphics;
 import java.awt.GridBagConstraints;
 import java.awt.GridBagLayout;
 import java.awt.GridLayout;
@@ -28,19 +26,16 @@ 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.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;
 import javax.swing.ButtonGroup;
-import javax.swing.ImageIcon;
 import javax.swing.JButton;
 import javax.swing.JCheckBox;
 import javax.swing.JFileChooser;
@@ -135,20 +130,7 @@ public class Settings implements Activity {
 		GridBagConstraints constraints = new GridBagConstraints();
 		int currentRow = 0;
 
-		JLabel labelImage;
+		JLabel labelImage = GuiSwing.createLogoWithWatermark();
-		try {
-			// Include the version of the app as a watermark in the SheepIt logo.
-			final BufferedImage watermark = ImageIO.read(getClass().getResource("/sheepit-logo.png"));
-			String versionString = "v" + Configuration.jarVersion;
-			drawVersionStringOnImage(watermark, versionString);
-
-			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;
 		
@@ -558,23 +540,6 @@ public class Settings implements Activity {
 		}
 	}
 
-	private void drawVersionStringOnImage(final BufferedImage image, String versionString) {
-		var watermarkWidth = image.getWidth();
-		var watermarkHeight = image.getHeight();
-
-		Graphics gph = image.getGraphics();
-		gph.setFont(gph.getFont().deriveFont(12f));
-
-		FontMetrics fontMetrics = gph.getFontMetrics();
-		// move text to the very right of the image respecting its length
-		int x = watermarkWidth - fontMetrics.stringWidth(versionString);
-		// the bottom of the image, but give enough headroom for descending letters like g
-		int y = watermarkHeight - fontMetrics.getMaxDescent();
-
-		gph.drawString(versionString, x, y);
-		gph.dispose();
-	}
-
 	public void resizeWindow() {}
 	
 	public boolean checkDisplaySaveButton() {

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

@@ -231,8 +231,7 @@ public class Working implements Activity {
 		last_frame_panel.add(lastRenderTime);
 		last_frame_panel.add(lastRender);
 		
-		ImageIcon image = new ImageIcon(getClass().getResource("/sheepit-logo.png"));
+		JLabel labelImage = GuiSwing.createLogoWithWatermark();
-		JLabel labelImage = new JLabel(image);
 		labelImage.setAlignmentX(Component.CENTER_ALIGNMENT);
 		parent.getContentPanel().add(labelImage);