1 files changed, 10 insertions, 1 deletions
diff --git a/src/nativewindow/classes/javax/media/nativewindow/util/DimensionImmutable.java b/src/nativewindow/classes/javax/media/nativewindow/util/DimensionImmutable.java
index d14e94c10..22bd3f48b 100644
--- a/src/nativewindow/classes/javax/media/nativewindow/util/DimensionImmutable.java
+++ b/src/nativewindow/classes/javax/media/nativewindow/util/DimensionImmutable.java
@@ -37,13 +37,22 @@ import com.jogamp.common.type.WriteCloneable;
  *  <li><code>height</code></li>
  * </ul>
  */
-public interface DimensionImmutable extends WriteCloneable {
+public interface DimensionImmutable extends WriteCloneable, Comparable<DimensionImmutable> {
 
     int getHeight();
 
     int getWidth();
 
     /**
+     * <p>
+     * Compares square of size.
+     * </p> 
+     * {@inheritDoc}
+     */
+    @Override
+    public int compareTo(final DimensionImmutable d);
+    
+    /**
      * Checks whether two dimensions objects are equal. Two instances
      * of <code>DimensionReadOnly</code> are equal if two components
      * <code>height</code> and <code>width</code> are equal.