Merge pull request #2492 from ben-kaufman/system-tray-dark-mode-mac

Fix system tray visibility for dark mode Mac

common/src/main/java/bisq/common/util/Utilities.java

@@ -155,6 +155,21 @@ public static ScheduledThreadPoolExecutor getScheduledThreadPoolExecutor(String
         return executor;
     }
 
+    /**
+     * @return true if <code>defaults read -g AppleInterfaceStyle</code> has an exit status of <code>0</code> (i.e. _not_ returning "key not found").
+     */
+    public static boolean isMacMenuBarDarkMode() {
+        try {
+            // check for exit status only. Once there are more modes than "dark" and "default", we might need to analyze string contents..
+            final Process process = Runtime.getRuntime().exec(new String[] {"defaults", "read", "-g", "AppleInterfaceStyle"});
+            process.waitFor(100, TimeUnit.MILLISECONDS);
+            return process.exitValue() == 0;
+        } catch (IOException | InterruptedException | IllegalThreadStateException ex) {
+            // IllegalThreadStateException thrown by proc.exitValue(), if process didn't terminate
+            return false;
+        }
+    }
+
     public static boolean isUnix() {
         return isOSX() || isLinux() || getOSName().contains("freebsd");
     }

desktop/src/main/java/bisq/desktop/app/SystemTray.java

@@ -52,6 +52,8 @@ public class SystemTray {
 
     private static final String ICON_HI_RES = "/images/system_tray_icon@2x.png";
     private static final String ICON_LO_RES = "/images/system_tray_icon.png";
+    private static final String ICON_HI_RES_WHITE = "/images/system_tray_icon@2x_white.png";
+    private static final String ICON_LO_RES_WHITE = "/images/system_tray_icon_white.png";
     private static final String ICON_WINDOWS_LO_RES = "/images/system_tray_icon_windows.png";
     private static final String ICON_WINDOWS_HI_RES = "/images/system_tray_icon_windows@2x.png";
     private static final String ICON_LINUX = "/images/system_tray_icon_linux.png";
@@ -97,7 +99,11 @@ private void init() {
 
         String path;
         if (Utilities.isOSX())
-            path = ImageUtil.isRetina() ? ICON_HI_RES : ICON_LO_RES;
+            if (Utilities.isMacMenuBarDarkMode())
+                path = ImageUtil.isRetina() ? ICON_HI_RES_WHITE : ICON_LO_RES_WHITE;
+            else
+                path = ImageUtil.isRetina() ? ICON_HI_RES : ICON_LO_RES;
+
         else if (Utilities.isWindows())
             path = ImageUtil.isRetina() ? ICON_WINDOWS_HI_RES : ICON_WINDOWS_LO_RES;
         else