+ 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) {
+ 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;
+ }
+ }
+ return false;
+ }
+