src/java.desktop/macosx/native/libawt_lwawt/awt/AWTView.m

*** 380,400 ****
          clickCount = 0;
      } else {
          clickCount = [event clickCount];
      }
      
      static JNF_CLASS_CACHE(jc_NSEvent, "sun/lwawt/macosx/NSEvent");
      static JNF_CTOR_CACHE(jctor_NSEvent, jc_NSEvent, "(IIIIIIIIDDI)V");
      jobject jEvent = JNFNewObject(env, jctor_NSEvent,
                                    [event type],
                                    [event modifierFlags],
                                    clickCount,
                                    [event buttonNumber],
                                    (jint)localPoint.x, (jint)localPoint.y,
                                    (jint)absP.x, (jint)absP.y,
!                                   [event deltaY],
!                                   [event deltaX],
                                    [AWTToolkit scrollStateWithEvent: event]);
      CHECK_NULL(jEvent);
      
      static JNF_CLASS_CACHE(jc_PlatformView, "sun/lwawt/macosx/CPlatformView");
      static JNF_MEMBER_CACHE(jm_deliverMouseEvent, jc_PlatformView, "deliverMouseEvent", "(Lsun/lwawt/macosx/NSEvent;)V");
--- 380,407 ----
          clickCount = 0;
      } else {
          clickCount = [event clickCount];
      }
  
+     jdouble deltaX = [event deltaX];
+     jdouble deltaY = [event deltaY];
+     if ([AWTToolkit hasPreciseScrollingDeltas: event]) {
+         deltaX = [event scrollingDeltaX] * 0.1;
+         deltaY = [event scrollingDeltaY] * 0.1;
+     }
+     
      static JNF_CLASS_CACHE(jc_NSEvent, "sun/lwawt/macosx/NSEvent");
      static JNF_CTOR_CACHE(jctor_NSEvent, jc_NSEvent, "(IIIIIIIIDDI)V");
      jobject jEvent = JNFNewObject(env, jctor_NSEvent,
                                    [event type],
                                    [event modifierFlags],
                                    clickCount,
                                    [event buttonNumber],
                                    (jint)localPoint.x, (jint)localPoint.y,
                                    (jint)absP.x, (jint)absP.y,
!                                   deltaY,
!                                   deltaX,
                                    [AWTToolkit scrollStateWithEvent: event]);
      CHECK_NULL(jEvent);
      
      static JNF_CLASS_CACHE(jc_PlatformView, "sun/lwawt/macosx/CPlatformView");
      static JNF_MEMBER_CACHE(jm_deliverMouseEvent, jc_PlatformView, "deliverMouseEvent", "(Lsun/lwawt/macosx/NSEvent;)V");