JAL-3608 JAL-3416 Added a 'gtk' option. Not currently used unless specified as -Dlaf=gtk

diff --git a/src/jalview/bin/Jalview.java b/src/jalview/bin/Jalview.java
index 5c026fd..cfcc2f7 100755 (executable)
--- a/src/jalview/bin/Jalview.java
+++ b/src/jalview/bin/Jalview.java
@@ -367,7 +367,7 @@ public class Jalview
 
     desktop = null;
 
-    // property laf = "crossplatform", "system" or "mac"
+    // property laf = "crossplatform", "system", "gtk" or "mac"
     // If not set (or chosen laf fails), use the normal SystemLaF and if on Mac,
     // try Quaqua/Vaqua.
     String laf = System.getProperty("laf", "none");
@@ -388,6 +388,12 @@ public class Jalview
         System.err.println("Could not set requested laf=" + laf);
       }
       break;
+    case "gtk":
+      lafSet = setGtkLookAndFeel();
+      {
+        System.err.println("Could not set requested laf=" + laf);
+      }
+      break;
     case "mac":
       lafSet = setMacLookAndFeel();
       if (!lafSet)
@@ -878,6 +884,22 @@ public class Jalview
     return set;
   }
 
+  private static boolean setGtkLookAndFeel()
+  {
+    boolean set = false;
+    String laf = "com.sun.java.swing.plaf.gtk.GTKLookAndFeel";
+    try
+    {
+      UIManager.setLookAndFeel(laf);
+      set = true;
+    } catch (Exception ex)
+    {
+      System.err.println("Unexpected Look and Feel Exception");
+      ex.printStackTrace();
+    }
+    return set;
+  }
+
   private static boolean setMacLookAndFeel()
   {
     boolean set = false;