X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=src%2Fjalview%2Fgui%2FAnnotationPanel.java;h=dee56b0c91953e3e39cbb81ca86190845ba3b614;hb=77b4f2ace6bde7f7c41199e74b3099337384ee4d;hp=71cdc9c560533469c3a2ae93fbfbce5538b048b0;hpb=aad3640b07f836362df7ea025fa09127a0a06145;p=jalview.git

diff --git a/src/jalview/gui/AnnotationPanel.java b/src/jalview/gui/AnnotationPanel.java
index 71cdc9c..dee56b0 100755
--- a/src/jalview/gui/AnnotationPanel.java
+++ b/src/jalview/gui/AnnotationPanel.java
@@ -175,11 +175,12 @@ public class AnnotationPanel extends JPanel implements AwtRenderPanelI,
     if (e.isShiftDown())
     {
       e.consume();
-      if (e.getWheelRotation() > 0)
+      double wheelRotation = e.getPreciseWheelRotation();
+      if (wheelRotation > 0)
       {
         av.getRanges().scrollRight(true);
       }
-      else
+      else if (wheelRotation < 0)
       {
         av.getRanges().scrollRight(false);
       }
@@ -782,6 +783,10 @@ public class AnnotationPanel extends JPanel implements AwtRenderPanelI,
       {
         this.setToolTipText(JvSwingUtils.wrapTooltip(true, description));
       }
+      else
+      {
+        this.setToolTipText(null); // no tooltip if null or empty description
+      }
     }
     else
     {