Keep startRes the same after removing columns

[jalview.git] / src / jalview / appletgui / AlignFrame.java

diff --git a/src/jalview/appletgui/AlignFrame.java b/src/jalview/appletgui/AlignFrame.java
index 80e8438..dc8f72b 100755 (executable)
--- a/src/jalview/appletgui/AlignFrame.java
+++ b/src/jalview/appletgui/AlignFrame.java
@@ -596,7 +596,16 @@ public class AlignFrame
     addHistoryItem(new HistoryItem("Remove Gapped Columns",\r
                                    viewport.alignment,\r
                                    HistoryItem.HIDE));\r
+\r
+    //This is to maintain viewport position on first residue\r
+    //of first sequence\r
+    SequenceI seq = viewport.alignment.getSequenceAt(0);\r
+    int startRes = seq.findPosition(viewport.startRes);\r
+\r
     viewport.getAlignment().removeGaps();\r
+\r
+    viewport.setStartRes(seq.findIndex(startRes)-1);\r
+\r
     viewport.updateConservation();\r
     viewport.updateConsensus();\r
     resetAllClustalSchemes();\r
@@ -608,6 +617,11 @@ public class AlignFrame
     addHistoryItem(new HistoryItem("Remove Gaps", viewport.alignment,\r
                                    HistoryItem.HIDE));\r
 \r
+    //This is to maintain viewport position on first residue\r
+    //of first sequence\r
+    SequenceI seq = viewport.alignment.getSequenceAt(0);\r
+    int startRes = seq.findPosition(viewport.startRes);\r
+\r
     SequenceI current;\r
     int jSize;\r
 \r
@@ -645,6 +659,7 @@ public class AlignFrame
       while(j < end && j < jSize) ;\r
     }\r
 \r
+    viewport.setStartRes(seq.findIndex(startRes)-1);\r
     resetAllClustalSchemes();\r
     viewport.updateConservation();\r
     viewport.updateConsensus();\r