X-Git-Url: https://gerrit.simantics.org/r/gitweb?p=simantics%2Fplatform.git;a=blobdiff_plain;f=bundles%2Forg.simantics.scenegraph%2Fsrc%2Forg%2Fsimantics%2Fscenegraph%2Fg2d%2Fevents%2FEventQueue.java;h=d3ab613557cc874858b40c36d76d4cf6555e57c3;hp=9b0980600990695e785e2d1040c58ae6e13f4a16;hb=162f92e52a7efa9fd0067666be6e9dfd28ec1e51;hpb=9f207b4d5d34917ca528684bd3268a0cf4eff331

diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/EventQueue.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/EventQueue.java
index 9b0980600..d3ab61355 100644
--- a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/EventQueue.java
+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/g2d/events/EventQueue.java
@@ -42,20 +42,19 @@ public class EventQueue implements IEventQueue, IEventHandler {
         return EventTypes.AnyMask;
     }
 
-    /**
-     * 
-     */
-    private MouseWheelMovedEvent lastMouseWheelMovedEvent;
-    
     private static final String DISABLE_DUPLICATE_REMOVAL = "org.simantics.scenegraph.g2d.events.disableDuplicateMouseWheelEvent";
     private static final boolean IGNORE_DUPLICATE = !Boolean.parseBoolean(System.getProperty(DISABLE_DUPLICATE_REMOVAL));
     
     private boolean ignoreDuplicateMouseWheelMovedEvent(Event e) {
         if (IGNORE_DUPLICATE && e instanceof MouseWheelMovedEvent) {
-            if (e.time > 0 && (lastMouseWheelMovedEvent != null && lastMouseWheelMovedEvent.time < 0)) {
+            MouseWheelMovedEvent event = (MouseWheelMovedEvent) e;
+            // if (e.time > 0 && (lastMouseWheelMovedEvent != null && lastMouseWheelMovedEvent.time < 0)) {
+            // apparently this is a better way to distinguish between SWT & AWT events
+            // SWT based event constructs the scrollAmount to = 0
+            // See org.simantics.g2d.event.adapter.SWTMouseEventAdapter.mouseScrolled(MouseEvent) L171
+            if (event.scrollAmount != MouseWheelMovedEvent.SCROLL_AMOUNT_ZERO) {
                 return true;
             }
-            lastMouseWheelMovedEvent = (MouseWheelMovedEvent) e;
         }
         return false;
     }