From 40b116609ba77bee19c5ff8968dec1f9b1382e65 Mon Sep 17 00:00:00 2001
From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Fri, 26 May 2017 12:05:38 +0100
Subject: [PATCH] JAL-2290 no update if no change of residue JAL-2547 no
 features on tooltip over gap

---
 src/jalview/gui/SeqPanel.java |   35 +++++++++++++++++++++++++++--------
 1 file changed, 27 insertions(+), 8 deletions(-)

diff --git a/src/jalview/gui/SeqPanel.java b/src/jalview/gui/SeqPanel.java
index 7dfac5e..dd1c68f 100644
--- a/src/jalview/gui/SeqPanel.java
+++ b/src/jalview/gui/SeqPanel.java
@@ -84,6 +84,16 @@ public class SeqPanel extends JPanel implements MouseListener,
   /** DOCUMENT ME!! */
   public AlignmentPanel ap;
 
+  /*
+   * last column position for mouseMoved event
+   */
+  private int lastMouseColumn;
+
+  /*
+   * last sequence offset for mouseMoved event
+   */
+  private int lastMouseSeq;
+
   protected int lastres;
 
   protected int startseq;
@@ -170,6 +180,9 @@ public class SeqPanel extends JPanel implements MouseListener,
       ssm.addStructureViewerListener(this);
       ssm.addSelectionListener(this);
     }
+
+    lastMouseColumn = -1;
+    lastMouseSeq = -1;
   }
 
   int startWrapBlock = -1;
@@ -747,6 +760,15 @@ public class SeqPanel extends JPanel implements MouseListener,
     {
       return;
     }
+    if (column == lastMouseColumn && seq == lastMouseSeq)
+    {
+      /*
+       * just a pixel move without change of residue
+       */
+      return;
+    }
+    lastMouseColumn = column;
+    lastMouseSeq = seq;
 
     SequenceI sequence = av.getAlignment().getSequenceAt(seq);
 
@@ -802,18 +824,15 @@ public class SeqPanel extends JPanel implements MouseListener,
     }
     else
     {
-      if (lastTooltip == null
-              || !lastTooltip.equals(tooltipText.toString()))
+      String textString = tooltipText.toString();
+      if (lastTooltip == null || !lastTooltip.equals(textString))
       {
         String formatedTooltipText = JvSwingUtils.wrapTooltip(true,
-                tooltipText.toString());
-        // String formatedTooltipText = tooltipText.toString();
+                textString);
         setToolTipText(formatedTooltipText);
-        lastTooltip = tooltipText.toString();
+        lastTooltip = textString;
       }
-
     }
-
   }
 
   private Point lastp = null;
@@ -907,9 +926,9 @@ public class SeqPanel extends JPanel implements MouseListener,
     }
 
     int pos = -1;
-    pos = sequence.findPosition(column);
     if (residue != null)
     {
+      pos = sequence.findPosition(column);
       text.append(" (").append(Integer.toString(pos)).append(")");
     }
     ap.alignFrame.statusBar.setText(text.toString());
-- 
1.7.10.2