X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fdatamodel%2FColumnSelection.java;h=6fd76b23ebf02a9366c38fecce0ee565d629edc1;hb=64b79e3758bd98db1664c47205f6570b2d689ba9;hp=c2327819c81923ce95e11d96da730e9544718cc4;hpb=10c09b8e314af1a1e7e01a0f450f943a60a41940;p=jalview.git

diff --git a/src/jalview/datamodel/ColumnSelection.java b/src/jalview/datamodel/ColumnSelection.java
index c232781..6fd76b2 100644
--- a/src/jalview/datamodel/ColumnSelection.java
+++ b/src/jalview/datamodel/ColumnSelection.java
@@ -600,7 +600,7 @@ public class ColumnSelection
    * Return absolute column index for a visible column index
    * 
    * @param column
-   *          int column index in alignment view
+   *          int column index in alignment view (count from zero)
    * @return alignment column index for column
    */
   public int adjustForHiddenColumns(int column)
@@ -1082,21 +1082,22 @@ public class ColumnSelection
   /**
    * Locate the first and last position visible for this sequence. if seq isn't
    * visible then return the position of the left and right of the hidden
-   * boundary region
+   * boundary region, and the corresponding alignment column indices for the
+   * extent of the sequence
    * 
    * @param seq
-   * @return int[] { visible start, visible end, first seqpos, last seqpos }
+   * @return int[] { visible start, visible end, first seqpos, last seqpos,
+   *         alignment index for seq start, alignment index for seq end }
    */
   public int[] locateVisibleBoundsOfSequence(SequenceI seq)
   {
     int fpos=seq.getStart(),lpos= seq.getEnd();
     int start = 0;
-    int end = seq.getLength();
     
     if (hiddenColumns == null || hiddenColumns.size() == 0)
     {
-      return new int[] { seq.findIndex(fpos), seq.findIndex(lpos), fpos,
-          lpos };
+      int ifpos = seq.findIndex(fpos) - 1, ilpos = seq.findIndex(lpos) - 1;
+      return new int[] { ifpos, ilpos, fpos, lpos, ifpos, ilpos };
     }
 
     // Simply walk along the sequence whilst watching for hidden column
@@ -1104,19 +1105,26 @@ public class ColumnSelection
     List<int[]> regions = getHiddenColumns();
     int spos = fpos, lastvispos = -1, rcount = 0, hideStart = seq
             .getLength(), hideEnd = -1;
-    int visPrev = 0, visNext = 0, base = 0;
+    int visPrev = 0, visNext = 0, firstP = -1, lastP = -1;
     boolean foundStart = false;
     for (int p = 0, pLen = seq.getLength(); spos <= seq.getEnd()
             && p < pLen; p++)
     {
       if (!Comparison.isGap(seq.getCharAt(p)))
       {
+        // keep track of first/last column
+        // containing sequence data regardless of visibility
+        if (firstP == -1)
+        {
+          firstP = p;
+        }
+        lastP = p;
         // update hidden region start/end
         while (hideEnd < p && rcount < regions.size())
         {
           int[] region = regions.get(rcount++);
-          visNext += region[1] + 1 - region[0];
-          visPrev = visNext-1;
+          visPrev = visNext;
+          visNext += region[0] - visPrev;
           hideStart = region[0];
           hideEnd = region[1];
         }
@@ -1143,10 +1151,10 @@ public class ColumnSelection
     if (foundStart)
     {
       return new int[] { findColumnPosition(start),
-          findColumnPosition(lastvispos), fpos, lpos };
+          findColumnPosition(lastvispos), fpos, lpos, firstP, lastP };
     }
     // otherwise, sequence was completely hidden
-    return new int[] { visPrev, visNext, 0, 0 };
+    return new int[] { visPrev, visNext, 0, 0, firstP, lastP };
   }
 
   /**