Newt/AWT Event Factory: Add Mouse Wheel Event Conversion

.. also reverse AWT rotation sign, since NEWT uses the reverse oriantation.

1 files changed, 2 insertions, 1 deletions

diff --git a/src/newt/classes/jogamp/newt/awt/event/AWTNewtEventFactory.java b/src/newt/classes/jogamp/newt/awt/event/AWTNewtEventFactory.java
index d64cc9359..cb70da13f 100644
--- a/src/newt/classes/jogamp/newt/awt/event/AWTNewtEventFactory.java
+++ b/src/newt/classes/jogamp/newt/awt/event/AWTNewtEventFactory.java
@@ -120,7 +120,8 @@ public class AWTNewtEventFactory {
         if(0xFFFFFFFF != type) {
             int rotation = 0;
             if (event instanceof java.awt.event.MouseWheelEvent) {
-                rotation = ((java.awt.event.MouseWheelEvent)event).getWheelRotation();
+                // AWT/NEWT rotation is reversed - AWT +1 is down, NEWT +1 is up.
+                rotation = -1 * ((java.awt.event.MouseWheelEvent)event).getWheelRotation();
             }
 
             int mods = awtModifiers2Newt(event.getModifiers(), true);