package jalview.datamodel;
import java.util.ArrayList;
+import java.util.Arrays;
import java.util.BitSet;
import java.util.Iterator;
import java.util.List;
import java.util.concurrent.locks.ReentrantReadWriteLock;
+/**
+ * This class manages the collection of hidden columns associated with an
+ * alignment. To iterate over the collection, or over visible columns/regions,
+ * use an iterator obtained from one of:
+ *
+ * - getBoundedIterator: iterates over the hidden regions, within some bounds,
+ * returning *absolute* positions
+ *
+ * - getBoundedStartIterator: iterates over the start positions of hidden
+ * regions, within some bounds, returning *visible* positions
+ *
+ * - getVisContigsIterator: iterates over visible regions in a range, returning
+ * *absolute* positions
+ *
+ * - getVisibleColsIterator: iterates over the visible *columns*
+ *
+ * For performance reasons, provide bounds where possible. Note that column
+ * numbering begins at 0 throughout this class.
+ *
+ * @author kmourao
+ */
+
+/* Implementation notes:
+ *
+ * Methods which change the hiddenColumns collection should use a writeLock to
+ * prevent other threads accessing the hiddenColumns collection while changes
+ * are being made. They should also reset the hidden columns cursor, and either
+ * update the hidden columns count, or set it to 0 (so that it will later be
+ * updated when needed).
+ *
+ *
+ * Methods which only need read access to the hidden columns collection should
+ * use a readLock to prevent other threads changing the hidden columns
+ * collection while it is in use.
+ */
public class HiddenColumns
{
private static final int HASH_MULTIPLIER = 31;
private static final ReentrantReadWriteLock LOCK = new ReentrantReadWriteLock();
+ /*
+ * Cursor which tracks the last used hidden columns region, and the number
+ * of hidden columns up to (but not including) that region.
+ */
private HiddenColumnsCursor cursor = new HiddenColumnsCursor();
/*
+ * cache of the number of hidden columns: must be kept up to date by methods
+ * which add or remove hidden columns
+ */
+ private int numColumns = 0;
+
+ /*
* list of hidden column [start, end] ranges; the list is maintained in
* ascending start column order
*/
- private ArrayList<int[]> hiddenColumns;
+ private List<int[]> hiddenColumns = new ArrayList<>();
/**
* Constructor
* Copy constructor
*
* @param copy
+ * the HiddenColumns object to copy from
*/
public HiddenColumns(HiddenColumns copy)
{
- try
- {
- LOCK.writeLock().lock();
- if (copy != null)
- {
- if (copy.hiddenColumns != null)
- {
- hiddenColumns = new ArrayList<>();
- Iterator<int[]> it = copy.iterator();
- while (it.hasNext())
- {
- hiddenColumns.add(it.next());
- }
- cursor.resetCursor(hiddenColumns);
- }
- }
- } finally
- {
- LOCK.writeLock().unlock();
- }
+ this(copy, Integer.MIN_VALUE, Integer.MAX_VALUE, 0);
}
/**
LOCK.writeLock().lock();
if (copy != null)
{
- hiddenColumns = new ArrayList<>();
+ numColumns = 0;
Iterator<int[]> it = copy.getBoundedIterator(start, end);
while (it.hasNext())
{
// all overlapping regions and we need contained regions
if (region[0] >= start && region[1] <= end)
{
- hiddenColumns.add(
- new int[]
- { region[0] - offset, region[1] - offset });
+ hiddenColumns
+ .add(new int[]
+ { region[0] - offset, region[1] - offset });
+ numColumns += region[1] - region[0] + 1;
+ }
+ }
+ cursor = new HiddenColumnsCursor(hiddenColumns);
+ }
+ } finally
+ {
+ LOCK.writeLock().unlock();
+ }
+ }
+
+ /**
+ * Adds the specified column range to the hidden columns collection
+ *
+ * @param start
+ * start of range to add (absolute position in alignment)
+ * @param end
+ * end of range to add (absolute position in alignment)
+ */
+ public void hideColumns(int start, int end)
+ {
+ try
+ {
+ LOCK.writeLock().lock();
+
+ int previndex = 0;
+ int prevHiddenCount = 0;
+ int regionindex = 0;
+ if (!hiddenColumns.isEmpty())
+ {
+ // set up cursor reset values
+ HiddenCursorPosition cursorPos = cursor.findRegionForColumn(start,
+ false);
+ regionindex = cursorPos.getRegionIndex();
+
+ if (regionindex > 0)
+ {
+ // get previous index and hidden count for updating the cursor later
+ previndex = regionindex - 1;
+ int[] prevRegion = hiddenColumns.get(previndex);
+ prevHiddenCount = cursorPos.getHiddenSoFar()
+ - (prevRegion[1] - prevRegion[0] + 1);
+ }
+ }
+
+ // new range follows everything else; check first to avoid looping over
+ // whole hiddenColumns collection
+ if (hiddenColumns.isEmpty()
+ || start > hiddenColumns.get(hiddenColumns.size() - 1)[1])
+ {
+ hiddenColumns.add(new int[] { start, end });
+ numColumns += end - start + 1;
+ }
+ else
+ {
+ /*
+ * traverse existing hidden ranges and insert / amend / append as
+ * appropriate
+ */
+ boolean added = false;
+ if (regionindex > 0)
+ {
+ added = insertRangeAtRegion(regionindex - 1, start, end);
+ }
+ if (!added && regionindex < hiddenColumns.size())
+ {
+ insertRangeAtRegion(regionindex, start, end);
+ }
+ }
+
+ // reset the cursor to just before our insertion point: this saves
+ // a lot of reprocessing in large alignments
+ cursor = new HiddenColumnsCursor(hiddenColumns, previndex,
+ prevHiddenCount);
+ } finally
+ {
+ LOCK.writeLock().unlock();
+ }
+ }
+
+ /**
+ * Insert [start, range] at the region at index i in hiddenColumns, if
+ * feasible
+ *
+ * @param i
+ * index to insert at
+ * @param start
+ * start of range to insert
+ * @param end
+ * end of range to insert
+ * @return true if range was successfully inserted
+ */
+ private boolean insertRangeAtRegion(int i, int start, int end)
+ {
+ boolean added = false;
+
+ int[] region = hiddenColumns.get(i);
+ if (end < region[0] - 1)
+ {
+ /*
+ * insert discontiguous preceding range
+ */
+ hiddenColumns.add(i, new int[] { start, end });
+ numColumns += end - start + 1;
+ added = true;
+ }
+ else if (end <= region[1])
+ {
+ /*
+ * new range overlaps existing, or is contiguous preceding it - adjust
+ * start column
+ */
+ int oldstart = region[0];
+ region[0] = Math.min(region[0], start);
+ numColumns += oldstart - region[0]; // new columns are between old and
+ // adjusted starts
+ added = true;
+ }
+ else if (start <= region[1] + 1)
+ {
+ /*
+ * new range overlaps existing, or is contiguous following it - adjust
+ * start and end columns
+ */
+ insertRangeAtOverlap(i, start, end, region);
+ added = true;
+ }
+ return added;
+ }
+
+ /**
+ * Insert a range whose start position overlaps an existing region and/or is
+ * contiguous to the right of the region
+ *
+ * @param i
+ * index to insert at
+ * @param start
+ * start of range to insert
+ * @param end
+ * end of range to insert
+ * @param region
+ * the overlapped/continued region
+ */
+ private void insertRangeAtOverlap(int i, int start, int end, int[] region)
+ {
+ int oldstart = region[0];
+ int oldend = region[1];
+ region[0] = Math.min(region[0], start);
+ region[1] = Math.max(region[1], end);
+
+ numColumns += oldstart - region[0];
+
+ /*
+ * also update or remove any subsequent ranges
+ * that are overlapped
+ */
+ int endi = i;
+ while (endi < hiddenColumns.size() - 1)
+ {
+ int[] nextRegion = hiddenColumns.get(endi + 1);
+ if (nextRegion[0] > end + 1)
+ {
+ /*
+ * gap to next hidden range - no more to update
+ */
+ break;
+ }
+ numColumns -= nextRegion[1] - nextRegion[0] + 1;
+ region[1] = Math.max(nextRegion[1], end);
+ endi++;
+ }
+ numColumns += region[1] - oldend;
+ hiddenColumns.subList(i + 1, endi + 1).clear();
+ }
+
+ /**
+ * hide a list of ranges
+ *
+ * @param ranges
+ */
+ public void hideList(List<int[]> ranges)
+ {
+ try
+ {
+ LOCK.writeLock().lock();
+ for (int[] r : ranges)
+ {
+ hideColumns(r[0], r[1]);
+ }
+ cursor = new HiddenColumnsCursor(hiddenColumns);
+
+ } finally
+ {
+ LOCK.writeLock().unlock();
+ }
+ }
+
+ /**
+ * Unhides, and adds to the selection list, all hidden columns
+ */
+ public void revealAllHiddenColumns(ColumnSelection sel)
+ {
+ try
+ {
+ LOCK.writeLock().lock();
+
+ for (int[] region : hiddenColumns)
+ {
+ for (int j = region[0]; j < region[1] + 1; j++)
+ {
+ sel.addElement(j);
+ }
+ }
+ hiddenColumns.clear();
+ cursor = new HiddenColumnsCursor(hiddenColumns);
+ numColumns = 0;
+
+ } finally
+ {
+ LOCK.writeLock().unlock();
+ }
+ }
+
+ /**
+ * Reveals, and marks as selected, the hidden column range with the given
+ * start column
+ *
+ * @param start
+ * the start column to look for
+ * @param sel
+ * the column selection to add the hidden column range to
+ */
+ public void revealHiddenColumns(int start, ColumnSelection sel)
+ {
+ try
+ {
+ LOCK.writeLock().lock();
+
+ if (!hiddenColumns.isEmpty())
+ {
+ int regionIndex = cursor.findRegionForColumn(start, false)
+ .getRegionIndex();
+
+ if (regionIndex != -1 && regionIndex != hiddenColumns.size())
+ {
+ // regionIndex is the region which either contains start
+ // or lies to the right of start
+ int[] region = hiddenColumns.get(regionIndex);
+ if (start == region[0])
+ {
+ for (int j = region[0]; j < region[1] + 1; j++)
+ {
+ sel.addElement(j);
+ }
+ int colsToRemove = region[1] - region[0] + 1;
+ hiddenColumns.remove(regionIndex);
+ numColumns -= colsToRemove;
}
}
- cursor.resetCursor(hiddenColumns);
}
} finally
{
{
LOCK.readLock().lock();
StringBuilder regionBuilder = new StringBuilder();
- if (hiddenColumns != null)
+
+ boolean first = true;
+ for (int[] range : hiddenColumns)
{
- Iterator<int[]> it = hiddenColumns.iterator();
- while (it.hasNext())
+ if (!first)
{
- int[] range = it.next();
- regionBuilder.append(delimiter).append(range[0]).append(between)
- .append(range[1]);
- if (!it.hasNext())
- {
- regionBuilder.deleteCharAt(0);
- }
+ regionBuilder.append(delimiter);
+ }
+ else
+ {
+ first = false;
}
+ regionBuilder.append(range[0]).append(between).append(range[1]);
+
}
+
return regionBuilder.toString();
} finally
{
*/
public int getSize()
{
- try
- {
- LOCK.readLock().lock();
- int size = 0;
- if (hiddenColumns != null)
- {
- Iterator<int[]> it = hiddenColumns.iterator();
- while (it.hasNext())
- {
- int[] range = it.next();
- size += range[1] - range[0] + 1;
- }
- }
- return size;
- } finally
- {
- LOCK.readLock().unlock();
- }
+ return numColumns;
}
/**
try
{
LOCK.readLock().lock();
- int num = 0;
- if (hasHiddenColumns())
- {
- num = hiddenColumns.size();
- }
- return num;
+ return hiddenColumns.size();
} finally
{
LOCK.readLock().unlock();
}
}
+ /**
+ * Answers true if obj is an instance of HiddenColumns, and holds the same
+ * array of start-end column ranges as this, else answers false
+ */
@Override
public boolean equals(Object obj)
{
/*
* check hidden columns are either both null, or match
*/
- if (this.hiddenColumns == null)
- {
- return (that.hiddenColumns == null);
- }
- if (that.hiddenColumns == null
- || that.hiddenColumns.size() != this.hiddenColumns.size())
+
+ if (that.hiddenColumns.size() != this.hiddenColumns.size())
{
return false;
}
- Iterator<int[]> it = hiddenColumns.iterator();
+ Iterator<int[]> it = this.iterator();
Iterator<int[]> thatit = that.iterator();
while (it.hasNext())
{
- int[] thisRange = it.next();
- int[] thatRange = thatit.next();
- if (thisRange[0] != thatRange[0] || thisRange[1] != thatRange[1])
+ if (!(Arrays.equals(it.next(), thatit.next())))
{
return false;
}
}
return true;
+
} finally
{
LOCK.readLock().unlock();
* int column index in alignment view (count from zero)
* @return alignment column index for column
*/
- public int adjustForHiddenColumns(int column)
+ public int visibleToAbsoluteColumn(int column)
{
try
{
LOCK.readLock().lock();
int result = column;
- if (hiddenColumns != null)
+ if (!hiddenColumns.isEmpty())
{
- result += cursor.getHiddenOffset(column);
+ result += cursor.findRegionForColumn(column, true).getHiddenSoFar();
}
return result;
/**
* Use this method to find out where a column will appear in the visible
* alignment when hidden columns exist. If the column is not visible, then the
- * left-most visible column will always be returned.
+ * index of the next visible column on the left will be returned (or 0 if
+ * there is no visible column on the left)
*
* @param hiddenColumn
* the column index in the full alignment including hidden columns
* @return the position of the column in the visible alignment
*/
- public int findColumnPosition(int hiddenColumn)
+ public int absoluteToVisibleColumn(int hiddenColumn)
{
try
{
- /* LOCK.readLock().lock();
- int result = hiddenColumn;
- int[] region = null;
- if (hiddenColumns != null)
- {
- Iterator<int[]> it = new RegionsIterator(0, hiddenColumn,
- hiddenColumns, cursor);
- while (it.hasNext())
- {
- region = it.next();
- if (hiddenColumn > region[1])
- {
- result -= region[1] + 1 - region[0];
- }
- }
-
- if (region != null && hiddenColumn >= region[0]
- && hiddenColumn <= region[1])
- {
- // Here the hidden column is within a region, so
- // we want to return the position of region[0]-1, adjusted for any
- // earlier hidden columns.
- // Calculate the difference between the actual hidden col position
- // and region[0]-1, and then subtract from result to convert result
- // from the adjusted hiddenColumn value to the adjusted region[0]-1
- // value.
-
- // However, if the region begins at 0 we cannot return region[0]-1
- // just return 0
- if (region[0] == 0)
- {
- return 0;
- }
- else
- {
- return result - (hiddenColumn - region[0] + 1);
- }
- }
- }
- return result; // return the shifted position after removing hidden
- // columns.
- } finally
- {
- LOCK.readLock().unlock();
- }*/
-
LOCK.readLock().lock();
int result = hiddenColumn;
- // int[] region = null;
- if (hiddenColumns != null)
+
+ if (!hiddenColumns.isEmpty())
{
- int index = cursor.findRegionForColumn(hiddenColumn);
- int hiddenBeforeCol = cursor.getHiddenSoFar();
-
+ HiddenCursorPosition cursorPos = cursor
+ .findRegionForColumn(hiddenColumn, false);
+ int index = cursorPos.getRegionIndex();
+ int hiddenBeforeCol = cursorPos.getHiddenSoFar();
+
// just subtract hidden cols count - this works fine if column is
// visible
result = hiddenColumn - hiddenBeforeCol;
-
+
// now check in case column is hidden - it will be in the returned
// hidden region
if (index < hiddenColumns.size())
}
}
}
- System.out.println(hiddenColumn + " " + result);
+
return result; // return the shifted position after removing hidden
// columns.
} finally
/**
* Find the visible column which is a given visible number of columns to the
- * left of another visible column. i.e. for a startColumn x, the column which
- * is distance 1 away will be column x-1.
+ * left (negative visibleDistance) or right (positive visibleDistance) of
+ * startColumn. If startColumn is not visible, we use the visible column at
+ * the left boundary of the hidden region containing startColumn.
*
* @param visibleDistance
- * the number of visible columns to offset by
+ * the number of visible columns to offset by (left offset = negative
+ * value; right offset = positive value)
* @param startColumn
- * the column to start from
- * @return the position of the column in the visible alignment
+ * the position of the column to start from (absolute position)
+ * @return the position of the column which is <visibleDistance> away
+ * (absolute position)
*/
- public int subtractVisibleColumns(int visibleDistance, int startColumn)
+ public int offsetByVisibleColumns(int visibleDistance, int startColumn)
{
try
{
LOCK.readLock().lock();
- int distance = visibleDistance;
-
- // in case startColumn is in a hidden region, move it to the left
- int start = adjustForHiddenColumns(findColumnPosition(startColumn));
-
- Iterator<int[]> it = new ReverseRegionsIterator(0, start,
- hiddenColumns);
-
- while (it.hasNext() && (distance > 0))
- {
- int[] region = it.next();
-
- if (start > region[1])
- {
- // subtract the gap to right of region from distance
- if (start - region[1] <= distance)
- {
- distance -= start - region[1];
- start = region[0] - 1;
- }
- else
- {
- start = start - distance;
- distance = 0;
- }
- }
- }
-
- return start - distance;
+ int start = absoluteToVisibleColumn(startColumn);
+ return visibleToAbsoluteColumn(start + visibleDistance);
} finally
{
* @param alPos
* the absolute (visible) alignmentPosition to find the next hidden
* column for
+ * @return the index of the next hidden column, or alPos if there is no next
+ * hidden column
*/
- public int getHiddenBoundaryRight(int alPos)
+ public int getNextHiddenBoundary(boolean left, int alPos)
{
try
{
LOCK.readLock().lock();
- if (hiddenColumns != null)
+ if (!hiddenColumns.isEmpty())
{
- int index = cursor.findRegionForColumn(alPos);
- if (index < hiddenColumns.size())
+ int index = cursor.findRegionForColumn(alPos, false)
+ .getRegionIndex();
+
+ if (left && index > 0)
+ {
+ int[] region = hiddenColumns.get(index - 1);
+ return region[1];
+ }
+ else if (!left && index < hiddenColumns.size())
{
int[] region = hiddenColumns.get(index);
if (alPos < region[0])
}
return alPos;
} finally
- {
- LOCK.readLock().unlock();
- }
- }
-
- /**
- * This method returns the leftmost limit of a region of an alignment with
- * hidden columns. In otherwords, the previous hidden column.
- *
- * @param alPos
- * the absolute (visible) alignmentPosition to find the previous
- * hidden column for
- */
- public int getHiddenBoundaryLeft(int alPos)
- {
- try
- {
- LOCK.readLock().lock();
-
- if (hiddenColumns != null)
- {
- int index = cursor.findRegionForColumn(alPos);
-
- if (index > 0)
- {
- int[] region = hiddenColumns.get(index - 1);
- return region[1];
- }
- }
- return alPos;
- } finally
- {
- LOCK.readLock().unlock();
- }
- }
-
- /**
- * Adds the specified column range to the hidden columns collection
- *
- * @param start
- * start of range to add (absolute position in alignment)
- * @param end
- * end of range to add (absolute position in alignment)
- */
- public void hideColumns(int start, int end)
- {
- boolean wasAlreadyLocked = false;
- try
- {
- // check if the write lock was already locked by this thread,
- // as this method can be called internally in loops within HiddenColumns
- if (!LOCK.isWriteLockedByCurrentThread())
- {
- LOCK.writeLock().lock();
- }
- else
- {
- wasAlreadyLocked = true;
- }
-
- if (hiddenColumns == null)
- {
- hiddenColumns = new ArrayList<>();
- }
-
- /*
- * new range follows everything else; check first to avoid looping over whole hiddenColumns collection
- */
- if (hiddenColumns.isEmpty()
- || start > hiddenColumns.get(hiddenColumns.size() - 1)[1])
- {
- hiddenColumns.add(new int[] { start, end });
- }
- else
- {
- /*
- * traverse existing hidden ranges and insert / amend / append as
- * appropriate
- */
- boolean added = false;
- for (int i = 0; !added && i < hiddenColumns.size(); i++)
- {
- added = insertRangeAtRegion(i, start, end);
- } // for
- }
- if (!wasAlreadyLocked)
- {
- cursor.resetCursor(hiddenColumns);
- }
- } finally
- {
- if (!wasAlreadyLocked)
- {
- LOCK.writeLock().unlock();
- }
- }
- }
-
- /**
- * Insert [start, range] at the region at index i in hiddenColumns, if
- * feasible
- *
- * @param i
- * index to insert at
- * @param start
- * start of range to insert
- * @param end
- * end of range to insert
- * @return true if range was successfully inserted
- */
- private boolean insertRangeAtRegion(int i, int start, int end)
- {
- boolean added = false;
-
- int[] region = hiddenColumns.get(i);
- if (end < region[0] - 1)
- {
- /*
- * insert discontiguous preceding range
- */
- hiddenColumns.add(i, new int[] { start, end });
- added = true;
- }
- else if (end <= region[1])
- {
- /*
- * new range overlaps existing, or is contiguous preceding it - adjust
- * start column
- */
- region[0] = Math.min(region[0], start);
- added = true;
- }
- else if (start <= region[1] + 1)
- {
- /*
- * new range overlaps existing, or is contiguous following it - adjust
- * start and end columns
- */
- region[0] = Math.min(region[0], start);
- region[1] = Math.max(region[1], end);
-
- /*
- * also update or remove any subsequent ranges
- * that are overlapped
- */
- while (i < hiddenColumns.size() - 1)
- {
- int[] nextRegion = hiddenColumns.get(i + 1);
- if (nextRegion[0] > end + 1)
- {
- /*
- * gap to next hidden range - no more to update
- */
- break;
- }
- region[1] = Math.max(nextRegion[1], end);
- hiddenColumns.subList(i + 1, i + 2).clear();
- }
- added = true;
- }
- return added;
- }
-
- /**
- * Answers if a column in the alignment is visible
- *
- * @param column
- * absolute position of column in the alignment
- * @return true if column is visible
- */
- public boolean isVisible(int column)
- {
- try
- {
- LOCK.readLock().lock();
-
- Iterator<int[]> it = new RegionsIterator(column, column,
- hiddenColumns, cursor);
- while (it.hasNext())
- {
- int[] region = it.next();
- if (column >= region[0] && column <= region[1])
- {
- return false;
- }
- }
-
- return true;
- } finally
- {
- LOCK.readLock().unlock();
- }
- }
-
- /**
- * Get the visible sections of a set of sequences
- *
- * @param start
- * sequence position to start from
- * @param end
- * sequence position to end at
- * @param seqs
- * an array of sequences
- * @return an array of strings encoding the visible parts of each sequence
- */
- public String[] getVisibleSequenceStrings(int start, int end,
- SequenceI[] seqs)
- {
- try
- {
- LOCK.readLock().lock();
- int iSize = seqs.length;
- String[] selections = new String[iSize];
- if (hiddenColumns != null && hiddenColumns.size() > 0)
- {
- for (int i = 0; i < iSize; i++)
- {
- StringBuffer visibleSeq = new StringBuffer();
-
- Iterator<int[]> blocks = new VisibleContigsIterator(start,
- end + 1, hiddenColumns);
-
- while (blocks.hasNext())
- {
- int[] block = blocks.next();
- if (blocks.hasNext())
- {
- visibleSeq
- .append(seqs[i].getSequence(block[0], block[1] + 1));
- }
- else
- {
- visibleSeq
- .append(seqs[i].getSequence(block[0], block[1]));
- }
- }
-
- selections[i] = visibleSeq.toString();
- }
- }
- else
- {
- for (int i = 0; i < iSize; i++)
- {
- selections[i] = seqs[i].getSequenceAsString(start, end);
- }
- }
-
- return selections;
- } finally
- {
- LOCK.readLock().unlock();
- }
- }
-
- /**
- * Locate the first position visible for this sequence. If seq isn't visible
- * then return the position of the left side of the hidden boundary region.
- *
- * @param seq
- * sequence to find position for
- * @return visible start position
- */
- public int locateVisibleStartOfSequence(SequenceI seq)
- {
- try
- {
- LOCK.readLock().lock();
- int start = 0;
-
- if (hiddenColumns == null || hiddenColumns.size() == 0)
- {
- return seq.findIndex(seq.getStart()) - 1;
- }
-
- // Simply walk along the sequence whilst watching for hidden column
- // boundaries
- Iterator<int[]> regions = hiddenColumns.iterator();
- int hideStart = seq.getLength();
- int hideEnd = -1;
- int visPrev = 0;
- int visNext = 0;
- boolean foundStart = false;
-
- // step through the non-gapped positions of the sequence
- for (int i = seq.getStart(); i <= seq.getEnd() && (!foundStart); i++)
- {
- // get alignment position of this residue in the sequence
- int p = seq.findIndex(i) - 1;
-
- // update hidden region start/end
- while (hideEnd < p && regions.hasNext())
- {
- int[] region = regions.next();
- 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)
- {
- start = p;
- foundStart = true;
- }
- }
-
- if (foundStart)
- {
- return findColumnPosition(start);
- }
- // otherwise, sequence was completely hidden
- return visPrev;
- } finally
- {
- LOCK.readLock().unlock();
- }
- }
-
- /**
- * delete any columns in alignmentAnnotation that are hidden (including
- * sequence associated annotation).
- *
- * @param alignmentAnnotation
- */
- public void makeVisibleAnnotation(AlignmentAnnotation alignmentAnnotation)
- {
- makeVisibleAnnotation(0, alignmentAnnotation.annotations.length,
- alignmentAnnotation);
+ {
+ LOCK.readLock().unlock();
+ }
}
/**
- * delete any columns in alignmentAnnotation that are hidden (including
- * sequence associated annotation).
+ * Answers if a column in the alignment is visible
*
- * @param start
- * remove any annotation to the right of this column
- * @param end
- * remove any annotation to the left of this column
- * @param alignmentAnnotation
- * the annotation to operate on
+ * @param column
+ * absolute position of column in the alignment
+ * @return true if column is visible
*/
- public void makeVisibleAnnotation(int start, int end,
- AlignmentAnnotation alignmentAnnotation)
+ public boolean isVisible(int column)
{
try
{
LOCK.readLock().lock();
- int startFrom = start;
- int endAt = end;
-
- if (alignmentAnnotation.annotations != null)
+ if (!hiddenColumns.isEmpty())
{
- if (hiddenColumns != null && hiddenColumns.size() > 0)
- {
- removeHiddenAnnotation(startFrom, endAt, alignmentAnnotation);
- }
- else
+ int regionindex = cursor.findRegionForColumn(column, false)
+ .getRegionIndex();
+ if (regionindex > -1 && regionindex < hiddenColumns.size())
{
- alignmentAnnotation.restrict(startFrom, endAt);
+ int[] region = hiddenColumns.get(regionindex);
+ // already know that column <= region[1] as cursor returns containing
+ // region or region to right
+ if (column >= region[0])
+ {
+ return false;
+ }
}
}
+ return true;
+
} finally
{
LOCK.readLock().unlock();
}
}
- private void removeHiddenAnnotation(int start, int end,
- AlignmentAnnotation alignmentAnnotation)
- {
- // mangle the alignmentAnnotation annotation array
- ArrayList<Annotation[]> annels = new ArrayList<>();
- Annotation[] els = null;
-
- int w = 0;
-
- Iterator<int[]> blocks = new VisibleContigsIterator(start, end + 1,
- hiddenColumns);
-
- int copylength;
- int annotationLength;
- while (blocks.hasNext())
- {
- int[] block = blocks.next();
- annotationLength = block[1] - block[0] + 1;
-
- if (blocks.hasNext())
- {
- // copy just the visible segment of the annotation row
- copylength = annotationLength;
- }
- else
- {
- if (annotationLength + block[0] <= alignmentAnnotation.annotations.length)
- {
- // copy just the visible segment of the annotation row
- copylength = annotationLength;
- }
- else
- {
- // copy to the end of the annotation row
- copylength = alignmentAnnotation.annotations.length - block[0];
- }
- }
-
- els = new Annotation[annotationLength];
- annels.add(els);
- System.arraycopy(alignmentAnnotation.annotations, block[0], els, 0,
- copylength);
- w += annotationLength;
- }
-
- if (w != 0)
- {
- alignmentAnnotation.annotations = new Annotation[w];
-
- w = 0;
- for (Annotation[] chnk : annels)
- {
- System.arraycopy(chnk, 0, alignmentAnnotation.annotations, w,
- chnk.length);
- w += chnk.length;
- }
- }
- }
-
/**
*
* @return true if there are columns hidden
try
{
LOCK.readLock().lock();
- return hiddenColumns != null && hiddenColumns.size() > 0;
+
+ // we don't use getSize()>0 here because it has to iterate over
+ // the full hiddenColumns collection and so will be much slower
+ return (!hiddenColumns.isEmpty());
} finally
{
LOCK.readLock().unlock();
/**
*
- * @return true if there are more than one set of columns hidden
+ * @return true if there is more than one hidden column region
*/
- public boolean hasManyHiddenColumns()
+ public boolean hasMultiHiddenColumnRegions()
{
try
{
LOCK.readLock().lock();
- return hiddenColumns != null && hiddenColumns.size() > 1;
+ return !hiddenColumns.isEmpty() && hiddenColumns.size() > 1;
} finally
{
LOCK.readLock().unlock();
}
/**
- * mark the columns corresponding to gap characters as hidden in the column
- * selection
- *
- * @param sr
+ * Returns a hashCode built from hidden column ranges
*/
- public void hideInsertionsFor(SequenceI sr)
+ @Override
+ public int hashCode()
{
try
{
- LOCK.writeLock().lock();
- List<int[]> inserts = sr.getInsertions();
- for (int[] r : inserts)
+ LOCK.readLock().lock();
+ int hashCode = 1;
+
+ for (int[] hidden : hiddenColumns)
{
- hideColumns(r[0], r[1]);
+ hashCode = HASH_MULTIPLIER * hashCode + hidden[0];
+ hashCode = HASH_MULTIPLIER * hashCode + hidden[1];
}
- cursor.resetCursor(hiddenColumns);
+ return hashCode;
} finally
{
- LOCK.writeLock().unlock();
+ LOCK.readLock().unlock();
}
}
/**
- * Unhides, and adds to the selection list, all hidden columns
+ * Hide columns corresponding to the marked bits
+ *
+ * @param inserts
+ * - columns mapped to bits starting from zero
*/
- public void revealAllHiddenColumns(ColumnSelection sel)
+ public void hideColumns(BitSet inserts)
{
- try
- {
- LOCK.writeLock().lock();
- if (hiddenColumns != null)
- {
- Iterator<int[]> it = hiddenColumns.iterator();
- while (it.hasNext())
- {
- int[] region = it.next();
- for (int j = region[0]; j < region[1] + 1; j++)
- {
- sel.addElement(j);
- }
- }
- hiddenColumns = null;
- cursor.resetCursor(hiddenColumns);
- }
- } finally
- {
- LOCK.writeLock().unlock();
- }
+ hideColumns(inserts, 0, inserts.length() - 1);
}
/**
- * Reveals, and marks as selected, the hidden column range with the given
- * start column
+ * Hide columns corresponding to the marked bits, within the range
+ * [start,end]. Entries in tohide which are outside [start,end] are ignored.
*
+ * @param tohide
+ * columns mapped to bits starting from zero
* @param start
+ * start of range to hide columns within
+ * @param end
+ * end of range to hide columns within
*/
- public void revealHiddenColumns(int start, ColumnSelection sel)
+ private void hideColumns(BitSet tohide, int start, int end)
{
try
{
LOCK.writeLock().lock();
- Iterator<int[]> it = new RegionsIterator(start, start, hiddenColumns,
- cursor);
- while (it.hasNext())
+ for (int firstSet = tohide
+ .nextSetBit(start), lastSet = start; firstSet >= start
+ && lastSet <= end; firstSet = tohide
+ .nextSetBit(lastSet))
{
- int[] region = it.next();
- if (start == region[0])
+ lastSet = tohide.nextClearBit(firstSet);
+ if (lastSet <= end)
{
- for (int j = region[0]; j < region[1] + 1; j++)
- {
- sel.addElement(j);
- }
- it.remove();
- break;
+ hideColumns(firstSet, lastSet - 1);
}
- else if (start < region[0])
+ else if (firstSet <= end)
{
- break; // passed all possible matching regions
+ hideColumns(firstSet, end);
}
}
-
- if (hiddenColumns.size() == 0)
- {
- hiddenColumns = null;
- }
- cursor.resetCursor(hiddenColumns);
+ cursor = new HiddenColumnsCursor(hiddenColumns);
} finally
{
LOCK.writeLock().unlock();
}
/**
- * Add gaps into the sequences aligned to profileseq under the given
- * AlignmentView
+ * Hide columns corresponding to the marked bits, within the range
+ * [start,end]. Entries in tohide which are outside [start,end] are ignored.
+ * NB Existing entries in [start,end] are cleared.
*
- * @param profileseq
- * @param al
- * - alignment to have gaps inserted into it
- * @param input
- * - alignment view where sequence corresponding to profileseq is
- * first entry
- * @return new HiddenColumns for new alignment view, with insertions into
- * profileseq marked as hidden.
+ * @param tohide
+ * columns mapped to bits starting from zero
+ * @param start
+ * start of range to hide columns within
+ * @param end
+ * end of range to hide columns within
*/
- public static HiddenColumns propagateInsertions(SequenceI profileseq,
- AlignmentI al, AlignmentView input)
+ public void clearAndHideColumns(BitSet tohide, int start, int end)
{
- int profsqpos = 0;
-
- char gc = al.getGapCharacter();
- Object[] alandhidden = input.getAlignmentAndHiddenColumns(gc);
- HiddenColumns nview = (HiddenColumns) alandhidden[1];
- SequenceI origseq = ((SequenceI[]) alandhidden[0])[profsqpos];
- nview.propagateInsertions(profileseq, al, origseq);
- return nview;
+ clearHiddenColumnsInRange(start, end);
+ hideColumns(tohide, start, end);
}
/**
+ * Make all columns in the range [start,end] visible
*
- * @param profileseq
- * - sequence in al which corresponds to origseq
- * @param al
- * - alignment which is to have gaps inserted into it
- * @param origseq
- * - sequence corresponding to profileseq which defines gap map for
- * modifying al
+ * @param start
+ * start of range to show columns
+ * @param end
+ * end of range to show columns
*/
- private void propagateInsertions(SequenceI profileseq, AlignmentI al,
- SequenceI origseq)
+ private void clearHiddenColumnsInRange(int start, int end)
{
try
{
LOCK.writeLock().lock();
- char gc = al.getGapCharacter();
-
- // take the set of hidden columns, and the set of gaps in origseq,
- // and remove all the hidden gaps from hiddenColumns
-
- // first get the gaps as a Bitset
- BitSet gaps = origseq.gapBitset();
-
- // now calculate hidden ^ not(gap)
- BitSet hidden = new BitSet();
- markHiddenRegions(hidden);
- hidden.andNot(gaps);
- hiddenColumns = null;
- this.hideMarkedBits(hidden);
-
- // for each sequence in the alignment, except the profile sequence,
- // insert gaps corresponding to each hidden region
- // but where each hidden column region is shifted backwards by the number
- // of
- // preceding visible gaps
- // update hidden columns at the same time
- Iterator<int[]> regions = hiddenColumns.iterator();
- ArrayList<int[]> newhidden = new ArrayList<>();
-
- int numGapsBefore = 0;
- int gapPosition = 0;
- while (regions.hasNext())
+ if (!hiddenColumns.isEmpty())
{
- // get region coordinates accounting for gaps
- // we can rely on gaps not being *in* hidden regions because we already
- // removed those
- int[] region = regions.next();
- while (gapPosition < region[0])
+ HiddenCursorPosition pos = cursor.findRegionForColumn(start, false);
+ int index = pos.getRegionIndex();
+
+ if (index != -1 && index != hiddenColumns.size())
{
- gapPosition++;
- if (gaps.get(gapPosition))
+ // regionIndex is the region which either contains start
+ // or lies to the right of start
+ int[] region = hiddenColumns.get(index);
+ if (region[0] < start && region[1] >= start)
{
- numGapsBefore++;
+ // region contains start, truncate so that it ends just before start
+ numColumns -= region[1] - start + 1;
+ region[1] = start - 1;
+ index++;
}
- }
-
- int left = region[0] - numGapsBefore;
- int right = region[1] - numGapsBefore;
- newhidden.add(new int[] { left, right });
-
- // make a string with number of gaps = length of hidden region
- StringBuffer sb = new StringBuffer();
- for (int s = 0; s < right - left + 1; s++)
- {
- sb.append(gc);
- }
- padGaps(sb, left, profileseq, al);
-
- }
- hiddenColumns = newhidden;
- cursor.resetCursor(hiddenColumns);
- } finally
- {
- LOCK.writeLock().unlock();
- }
- }
- /**
- * Pad gaps in all sequences in alignment except profileseq
- *
- * @param sb
- * gap string to insert
- * @param left
- * position to insert at
- * @param profileseq
- * sequence not to pad
- * @param al
- * alignment to pad sequences in
- */
- private void padGaps(StringBuffer sb, int pos, SequenceI profileseq,
- AlignmentI al)
- {
- // loop over the sequences and pad with gaps where required
- for (int s = 0, ns = al.getHeight(); s < ns; s++)
- {
- SequenceI sqobj = al.getSequenceAt(s);
- if (sqobj != profileseq)
- {
- String sq = al.getSequenceAt(s).getSequenceAsString();
- if (sq.length() <= pos)
- {
- // pad sequence
- int diff = pos - sq.length() - 1;
- if (diff > 0)
+ int endi = index;
+ while (endi < hiddenColumns.size())
{
- // pad gaps
- sq = sq + sb;
- while ((diff = pos - sq.length() - 1) > 0)
+ region = hiddenColumns.get(endi);
+
+ if (region[1] > end)
{
- if (diff >= sb.length())
- {
- sq += sb.toString();
- }
- else
+ if (region[0] <= end)
{
- char[] buf = new char[diff];
- sb.getChars(0, diff, buf, 0);
- sq += buf.toString();
+ // region contains end, truncate so it starts just after end
+ numColumns -= end - region[0] + 1;
+ region[0] = end + 1;
}
+ break;
}
+
+ numColumns -= region[1] - region[0] + 1;
+ endi++;
}
- sq += sb.toString();
- }
- else
- {
- al.getSequenceAt(s).setSequence(
- sq.substring(0, pos) + sb.toString() + sq.substring(pos));
- }
- }
- }
- }
+ hiddenColumns.subList(index, endi).clear();
- /**
- * Returns a hashCode built from hidden column ranges
- */
- @Override
- public int hashCode()
- {
- try
- {
- LOCK.readLock().lock();
- int hashCode = 1;
- Iterator<int[]> it = hiddenColumns.iterator();
- while (it.hasNext())
- {
- int[] hidden = it.next();
- hashCode = HASH_MULTIPLIER * hashCode + hidden[0];
- hashCode = HASH_MULTIPLIER * hashCode + hidden[1];
- }
- return hashCode;
- } finally
- {
- LOCK.readLock().unlock();
- }
- }
+ }
- /**
- * Hide columns corresponding to the marked bits
- *
- * @param inserts
- * - columns map to bits starting from zero
- */
- public void hideMarkedBits(BitSet inserts)
- {
- try
- {
- LOCK.writeLock().lock();
- for (int firstSet = inserts
- .nextSetBit(0), lastSet = 0; firstSet >= 0; firstSet = inserts
- .nextSetBit(lastSet))
- {
- lastSet = inserts.nextClearBit(firstSet);
- hideColumns(firstSet, lastSet - 1);
+ cursor = new HiddenColumnsCursor(hiddenColumns);
}
- cursor.resetCursor(hiddenColumns);
} finally
{
LOCK.writeLock().unlock();
/**
*
- * @param inserts
+ * @param updates
* BitSet where hidden columns will be marked
*/
- public void markHiddenRegions(BitSet inserts)
+ protected void andNot(BitSet updates)
{
try
{
- LOCK.readLock().lock();
- if (hiddenColumns == null)
- {
- return;
- }
- Iterator<int[]> it = hiddenColumns.iterator();
- while (it.hasNext())
+ LOCK.writeLock().lock();
+
+ BitSet hiddenBitSet = new BitSet();
+ for (int[] range : hiddenColumns)
{
- int[] range = it.next();
- inserts.set(range[0], range[1] + 1);
+ hiddenBitSet.set(range[0], range[1] + 1);
}
+ hiddenBitSet.andNot(updates);
+ hiddenColumns.clear();
+ hideColumns(hiddenBitSet);
} finally
{
- LOCK.readLock().unlock();
+ LOCK.writeLock().unlock();
}
}
try
{
LOCK.readLock().lock();
- int[] alignmentStartEnd = new int[] { 0, width - 1 };
- int startPos = alignmentStartEnd[0];
- int endPos = alignmentStartEnd[1];
- int[] lowestRange = new int[] { -1, -1 };
- int[] higestRange = new int[] { -1, -1 };
+ int firstVisible = 0;
+ int lastVisible = width - 1;
- if (hiddenColumns == null)
+ if (!hiddenColumns.isEmpty())
{
- return new int[] { startPos, endPos };
- }
-
- Iterator<int[]> it = hiddenColumns.iterator();
- while (it.hasNext())
- {
- int[] range = it.next();
- lowestRange = (range[0] <= startPos) ? range : lowestRange;
- higestRange = (range[1] >= endPos) ? range : higestRange;
- }
+ // first visible col with index 0, convert to absolute index
+ firstVisible = visibleToAbsoluteColumn(0);
- if (lowestRange[0] == -1 && lowestRange[1] == -1)
- {
- startPos = alignmentStartEnd[0];
- }
- else
- {
- startPos = lowestRange[1] + 1;
+ // last visible column is either immediately to left of
+ // last hidden region, or is just the last column in the alignment
+ int[] lastregion = hiddenColumns.get(hiddenColumns.size() - 1);
+ if (lastregion[1] == width - 1)
+ {
+ // last region is at very end of alignment
+ // last visible column immediately precedes it
+ lastVisible = lastregion[0] - 1;
+ }
}
+ return new int[] { firstVisible, lastVisible };
- if (higestRange[0] == -1 && higestRange[1] == -1)
- {
- endPos = alignmentStartEnd[1];
- }
- else
- {
- endPos = higestRange[0] - 1;
- }
- return new int[] { startPos, endPos };
} finally
{
LOCK.readLock().unlock();
*
* @param res
* visible residue position, unadjusted for hidden columns
- * @return region as [start,end] or null if no matching region is found
+ * @return region as [start,end] or null if no matching region is found. If
+ * res is adjacent to two regions, returns the left region.
*/
public int[] getRegionWithEdgeAtRes(int res)
{
try
{
LOCK.readLock().lock();
- int adjres = adjustForHiddenColumns(res);
+ int adjres = visibleToAbsoluteColumn(res);
int[] reveal = null;
- if (hiddenColumns != null)
+ if (!hiddenColumns.isEmpty())
{
- int regionindex = cursor.findRegionForColumn(adjres - 1);
- if (hiddenColumns.get(regionindex)[1] == adjres - 1)
+ // look for a region ending just before adjres
+ int regionindex = cursor.findRegionForColumn(adjres - 1, false)
+ .getRegionIndex();
+ if (regionindex < hiddenColumns.size()
+ && hiddenColumns.get(regionindex)[1] == adjres - 1)
{
reveal = hiddenColumns.get(regionindex);
}
- else
+ // check if the region ends just after adjres
+ else if (regionindex < hiddenColumns.size()
+ && hiddenColumns.get(regionindex)[0] == adjres + 1)
{
- regionindex = cursor.findRegionForColumn(adjres + 1);
- if (hiddenColumns.get(regionindex)[0] == adjres + 1)
- {
- reveal = hiddenColumns.get(regionindex);
- }
+ reveal = hiddenColumns.get(regionindex);
}
}
return reveal;
try
{
LOCK.readLock().lock();
- return new BoundedHiddenColsIterator(hiddenColumns);
+ return new RangeIterator(hiddenColumns);
} finally
{
LOCK.readLock().unlock();
try
{
LOCK.readLock().lock();
- return new BoundedHiddenColsIterator(start, end, hiddenColumns);
+ return new RangeIterator(start, end, hiddenColumns);
} finally
{
LOCK.readLock().unlock();
* @param end
* position to end at (inclusive, visible column position)
*/
- public Iterator<Integer> getBoundedStartIterator(int start, int end)
+ public Iterator<Integer> getStartRegionIterator(int start, int end)
{
try
{
LOCK.readLock().lock();
- return new BoundedStartRegionIterator(start, end, hiddenColumns);
+
+ // get absolute position of column in alignment
+ int absoluteStart = visibleToAbsoluteColumn(start);
+
+ // Get cursor position and supply it to the iterator:
+ // Since we want visible region start, we look for a cursor for the
+ // (absoluteStart-1), then if absoluteStart is the start of a visible
+ // region we'll get the cursor pointing to the region before, which is
+ // what we want
+ HiddenCursorPosition pos = cursor
+ .findRegionForColumn(absoluteStart - 1, false);
+
+ return new StartRegionIterator(pos, start, end, hiddenColumns);
} finally
{
LOCK.readLock().unlock();
try
{
LOCK.readLock().lock();
- return new VisibleColsIterator(start, end, hiddenColumns);
- } finally
- {
- LOCK.readLock().unlock();
- }
- }
-
- /**
- * return an iterator over visible segments between the given start and end
- * boundaries
- *
- * @param start
- * (first column inclusive from 0)
- * @param end
- * (last column - not inclusive)
- */
- public Iterator<int[]> getVisContigsIterator(int start, int end)
- {
- try
- {
- LOCK.readLock().lock();
- return new VisibleContigsIterator(start, end, hiddenColumns);
+ return new RangeElementsIterator(
+ new VisibleContigsIterator(start, end + 1, hiddenColumns));
} finally
{
LOCK.readLock().unlock();
* boundaries
*
* @param start
- * (first column - inclusive from 0)
+ * first column, inclusive from 0
* @param end
- * (last column - inclusive)
+ * last column - not inclusive
* @param useVisibleCoords
* if true, start and end are visible column positions, not absolute
- * positions
+ * positions*
*/
- public Iterator<int[]> getVisibleBlocksIterator(int start, int end,
+ public VisibleContigsIterator getVisContigsIterator(int start, int end,
boolean useVisibleCoords)
{
+ int adjstart = start;
+ int adjend = end;
if (useVisibleCoords)
{
- // TODO
- // we should really just convert start and end here with
- // adjustForHiddenColumns
- // and then create a VisibleContigsIterator
- // but without a cursor this will be horribly slow in some situations
- // ... so until then...
- return new VisibleBlocksVisBoundsIterator(start, end, true);
- }
- else
- {
- try
- {
- LOCK.readLock().lock();
- return new VisibleContigsIterator(start, end + 1, hiddenColumns);
- } finally
- {
- LOCK.readLock().unlock();
- }
- }
- }
-
- /**
- * An iterator which iterates over visible regions in a range. The range is
- * specified in terms of visible column positions. Provides a special
- * "endsAtHidden" indicator to allow callers to determine if the final visible
- * column is adjacent to a hidden region.
- */
- public class VisibleBlocksVisBoundsIterator implements Iterator<int[]>
- {
- private List<int[]> vcontigs = new ArrayList<>();
-
- private int currentPosition = 0;
-
- private boolean endsAtHidden = false;
-
- /**
- * Constructor for iterator over visible regions in a range.
- *
- * @param start
- * start position in terms of visible column position
- * @param end
- * end position in terms of visible column position
- * @param usecopy
- * whether to use a local copy of hidden columns
- */
- VisibleBlocksVisBoundsIterator(int start, int end, boolean usecopy)
- {
- /* actually this implementation always uses a local copy but this may change in future */
- try
- {
- if (usecopy)
- {
- LOCK.readLock().lock();
- }
-
- if (hiddenColumns != null && hiddenColumns.size() > 0)
- {
- int blockStart = start;
- int blockEnd = end;
- int hiddenSoFar = 0;
- int visSoFar = 0;
-
- // iterate until a region begins within (start,end]
- int i = 0;
- while ((i < hiddenColumns.size())
- && (hiddenColumns.get(i)[0] <= blockStart + hiddenSoFar))
- {
- hiddenSoFar += hiddenColumns.get(i)[1] - hiddenColumns.get(i)[0]
- + 1;
- i++;
- }
-
- blockStart += hiddenSoFar; // convert start to absolute position
- blockEnd += hiddenSoFar; // convert end to absolute position
-
- // iterate from start to end, adding each visible region. Positions
- // are
- // absolute, and all hidden regions which overlap [start,end] are
- // used.
- while (i < hiddenColumns.size()
- && (hiddenColumns.get(i)[0] <= blockEnd))
- {
- int[] region = hiddenColumns.get(i);
-
- // end position of this visible region is either just before the
- // start of the next hidden region, or the absolute position of
- // 'end', whichever is lowest
- blockEnd = Math.min(blockEnd, region[0] - 1);
-
- vcontigs.add(new int[] { blockStart, blockEnd });
-
- visSoFar += blockEnd - blockStart + 1;
-
- // next visible region starts after this hidden region
- blockStart = region[1] + 1;
-
- hiddenSoFar += region[1] - region[0] + 1;
-
- // reset blockEnd to absolute position of 'end', assuming we've now
- // passed all hidden regions before end
- blockEnd = end + hiddenSoFar;
-
- i++;
- }
- if (visSoFar < end - start + 1)
- {
- // the number of visible columns we've accounted for is less than
- // the number specified by end-start; work out the end position of
- // the last visible region
- blockEnd = blockStart + end - start - visSoFar;
- vcontigs.add(new int[] { blockStart, blockEnd });
-
- // if the last visible region ends at the next hidden region, set
- // endsAtHidden=true
- if (i < hiddenColumns.size()
- && hiddenColumns.get(i)[0] - 1 == blockEnd)
- {
- endsAtHidden = true;
- }
- }
- }
- else
- {
- // there are no hidden columns, return a single visible contig
- vcontigs.add(new int[] { start, end });
- endsAtHidden = false;
- }
- } finally
- {
- if (usecopy)
- {
- LOCK.readLock().unlock();
- }
- }
- }
-
- @Override
- public boolean hasNext()
- {
- return (currentPosition < vcontigs.size());
+ adjstart = visibleToAbsoluteColumn(start);
+ adjend = visibleToAbsoluteColumn(end);
}
- @Override
- public int[] next()
+ try
{
- int[] result = vcontigs.get(currentPosition);
- currentPosition++;
- return result;
- }
-
- public boolean endsAtHidden()
+ LOCK.readLock().lock();
+ return new VisibleContigsIterator(adjstart, adjend, hiddenColumns);
+ } finally
{
- return endsAtHidden;
+ LOCK.readLock().unlock();
}
}
}
git://source.jalview.org / jalview.git / blobdiff