merge from develop

[jalview.git] / src / jalview / viewmodel / AlignmentViewport.java

diff --git a/src/jalview/viewmodel/AlignmentViewport.java b/src/jalview/viewmodel/AlignmentViewport.java
index 899e8a7..a3b7527 100644 (file)
--- a/src/jalview/viewmodel/AlignmentViewport.java
+++ b/src/jalview/viewmodel/AlignmentViewport.java
@@ -2531,7 +2531,12 @@ public abstract class AlignmentViewport implements AlignViewportI,
     int middleColumn = getStartRes() + (getEndRes() - getStartRes()) / 2;
     final HiddenSequences hiddenSequences = getAlignment()
             .getHiddenSequences();
-    for (int seqNo = getStartSeq(); seqNo < getEndSeq(); seqNo++, seqOffset++)
+    
+    /*
+     * searching to the bottom of the alignment gives smoother scrolling across all gapped visible regions
+     */
+    int lastSeq = alignment.getHeight() - 1;
+    for (int seqNo = getStartSeq(); seqNo < lastSeq; seqNo++, seqOffset++)
     {
       sequence = getAlignment().getSequenceAt(seqNo);
       if (hiddenSequences != null && hiddenSequences.isHidden(sequence))