- return selections;
- }
- finally
- {
- lock.readLock().unlock();
- }
- }
-
- /**
- * 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, and the corresponding alignment column indices for the
- * extent of the sequence
- *
- * @param seq
- * @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)
- {
- try
- {
- lock.readLock().lock();
- int fpos = seq.getStart(), lpos = seq.getEnd();
- int start = 0;
-
- if (hiddenColumns == null || hiddenColumns.size() == 0)
- {
- 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
- // boundaries
- List<int[]> regions = getHiddenRegions();
- int spos = fpos, lastvispos = -1, rcount = 0,
- hideStart = seq.getLength(), hideEnd = -1;
- 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++);
- visPrev = visNext;
- visNext += region[0] - visPrev;
- hideStart = region[0];
- hideEnd = region[1];
- }
- if (hideEnd < p)
- {
- hideStart = seq.getLength();
- }
- // update visible boundary for sequence
- if (p < hideStart)
- {
- if (!foundStart)
- {
- fpos = spos;
- start = p;
- foundStart = true;
- }
- lastvispos = p;
- lpos = spos;
- }
- // look for next sequence position
- spos++;
- }
- }
- if (foundStart)
- {
- return new int[] { findColumnPosition(start),
- findColumnPosition(lastvispos), fpos, lpos, firstP, lastP };
- }
- // otherwise, sequence was completely hidden
- return new int[] { visPrev, visNext, 0, 0, firstP, lastP };
- }
- finally