+++ /dev/null
-package tim.prune.data;
-
-import tim.prune.DataSubscriber;
-import tim.prune.UpdateMessageBroker;
-
-/**
- * Class to represent a selected portion of a Track
- * and its properties
- */
-public class Selection
-{
- private Track _track = null;
- private int _currentPoint = -1;
- private boolean _valid = false;
- private int _prevNumPoints = 0;
- private int _startIndex = -1, _endIndex = -1;
- private int _currentPhotoIndex = -1;
- private int _currentAudioIndex = -1;
- private AltitudeRange _altitudeRange = null;
- private long _movingMilliseconds = 0L;
- private double _angMovingDistance = -1.0;
-
-
- /**
- * Constructor
- * @param inTrack track object
- */
- public Selection(Track inTrack)
- {
- _track = inTrack;
- }
-
-
- /**
- * Mark selection invalid so it will be recalculated
- */
- public void markInvalid()
- {
- _valid = false;
- }
-
-
- /**
- * @return the current point index
- */
- public int getCurrentPointIndex()
- {
- return _currentPoint;
- }
-
-
- /**
- * @return true if range is selected
- */
- public boolean hasRangeSelected()
- {
- return _startIndex >= 0 && _endIndex > _startIndex;
- }
-
-
- /**
- * Recalculate all selection details
- */
- private void recalculate()
- {
- final int numPoints = _track.getNumPoints();
- // Recheck if the number of points has changed
- if (numPoints != _prevNumPoints)
- {
- _prevNumPoints = numPoints;
- check();
- }
- if (numPoints > 0 && hasRangeSelected())
- {
- _altitudeRange = new AltitudeRange();
- Altitude altitude = null;
- Timestamp time = null, previousTime = null;
- DataPoint lastPoint = null, currPoint = null;
- _angMovingDistance = 0.0;
- _movingMilliseconds = 0L;
- // Loop over points in selection
- for (int i=_startIndex; i<=_endIndex; i++)
- {
- currPoint = _track.getPoint(i);
- altitude = currPoint.getAltitude();
- // Ignore waypoints in altitude calculations
- if (!currPoint.isWaypoint() && altitude.isValid())
- {
- if (currPoint.getSegmentStart()) {
- _altitudeRange.ignoreValue(altitude);
- }
- else {
- _altitudeRange.addValue(altitude);
- }
- }
- // Compare timestamps within the segments
- time = currPoint.getTimestamp();
- if (time.isValid())
- {
- // add moving time
- if (!currPoint.getSegmentStart() && previousTime != null && time.isAfter(previousTime)) {
- _movingMilliseconds += time.getMillisecondsSince(previousTime);
- }
- previousTime = time;
- }
- // Calculate distances, again ignoring waypoints
- if (!currPoint.isWaypoint())
- {
- if (lastPoint != null)
- {
- double radians = DataPoint.calculateRadiansBetween(lastPoint, currPoint);
- if (!currPoint.getSegmentStart()) {
- _angMovingDistance += radians;
- }
- }
- lastPoint = currPoint;
- }
- }
- }
- _valid = true;
- }
-
-
- /**
- * @return start index
- */
- public int getStart()
- {
- if (!_valid) recalculate();
- return _startIndex;
- }
-
-
- /**
- * @return end index
- */
- public int getEnd()
- {
- if (!_valid) recalculate();
- return _endIndex;
- }
-
- /**
- * @return altitude range
- */
- public AltitudeRange getAltitudeRange()
- {
- if (!_valid) recalculate();
- return _altitudeRange;
- }
-
-
- /**
- * @return number of seconds spanned by segments within selection
- */
- public long getMovingSeconds()
- {
- if (!_valid) recalculate();
- return _movingMilliseconds / 1000L;
- }
-
- /**
- * @return moving distance of Selection in current units
- */
- public double getMovingDistance()
- {
- return Distance.convertRadiansToDistance(_angMovingDistance);
- }
-
- /**
- * Clear selected point, range, photo and audio
- */
- public void clearAll()
- {
- _currentPoint = -1;
- selectRange(-1, -1);
- _currentPhotoIndex = -1;
- _currentAudioIndex = -1;
- check();
- }
-
-
- /**
- * Select range from start to end
- * @param inStartIndex index of start of range
- * @param inEndIndex index of end of range
- */
- public void selectRange(int inStartIndex, int inEndIndex)
- {
- _startIndex = inStartIndex;
- _endIndex = inEndIndex;
- markInvalid();
- check();
- }
-
-
- /**
- * Select the range from the current point
- */
- public void selectRangeStart()
- {
- selectRangeStart(_currentPoint);
- }
-
-
- /**
- * Set the index for the start of the range selection
- * @param inStartIndex start index
- */
- private void selectRangeStart(int inStartIndex)
- {
- if (inStartIndex < 0)
- {
- _startIndex = _endIndex = -1;
- }
- else
- {
- _startIndex = inStartIndex;
- // Move end of selection to max if necessary
- if (_endIndex <= _startIndex)
- {
- _endIndex = _track.getNumPoints() - 1;
- }
- }
- markInvalid();
- UpdateMessageBroker.informSubscribers();
- }
-
-
- /**
- * Select the range up to the current point
- */
- public void selectRangeEnd()
- {
- selectRangeEnd(_currentPoint);
- }
-
-
- /**
- * Set the index for the end of the range selection
- * @param inEndIndex end index
- */
- public void selectRangeEnd(int inEndIndex)
- {
- if (inEndIndex < 0)
- {
- _startIndex = _endIndex = -1;
- }
- else
- {
- _endIndex = inEndIndex;
- // Move start of selection to min if necessary
- if (_startIndex > _endIndex || _startIndex < 0) {
- _startIndex = 0;
- }
- }
- markInvalid();
- UpdateMessageBroker.informSubscribers();
- }
-
-
- /**
- * Modify the selection given that the selected range has been deleted
- */
- public void modifyRangeDeleted()
- {
- // Modify current point, if any
- if (_currentPoint > _endIndex)
- {
- _currentPoint -= (_endIndex - _startIndex);
- }
- else if (_currentPoint > _startIndex)
- {
- _currentPoint = _startIndex;
- }
- // Clear selected range
- _startIndex = _endIndex = -1;
- // Check for consistency and fire update
- check();
- }
-
-
- /**
- * Modify the selection when a point is deleted
- */
- public void modifyPointDeleted()
- {
- // current point index doesn't change, just gets checked
- // range needs to get altered if deleted point is inside or before
- if (hasRangeSelected() && _currentPoint <= _endIndex)
- {
- _endIndex--;
- if (_currentPoint < _startIndex)
- _startIndex--;
- markInvalid();
- }
- check();
- }
-
-
- /**
- * Select the specified photo and point
- * @param inPointIndex index of selected point
- * @param inPhotoIndex index of selected photo in PhotoList
- * @param inAudioIndex index of selected audio item
- */
- public void selectPointPhotoAudio(int inPointIndex, int inPhotoIndex, int inAudioIndex)
- {
- _currentPoint = inPointIndex;
- _currentPhotoIndex = inPhotoIndex;
- _currentAudioIndex = inAudioIndex;
- check();
- }
-
-
- /**
- * @return currently selected photo index
- */
- public int getCurrentPhotoIndex()
- {
- return _currentPhotoIndex;
- }
-
- /**
- * @return currently selected audio index
- */
- public int getCurrentAudioIndex()
- {
- return _currentAudioIndex;
- }
-
- /**
- * Check that the selection still makes sense
- * and fire update message to listeners
- */
- private void check()
- {
- if (_track != null && _track.getNumPoints() > 0)
- {
- int maxIndex = _track.getNumPoints() - 1;
- if (_currentPoint > maxIndex)
- {
- _currentPoint = maxIndex;
- }
- if (_endIndex > maxIndex)
- {
- _endIndex = maxIndex;
- }
- if (_startIndex > maxIndex)
- {
- _startIndex = maxIndex;
- }
- }
- else
- {
- // track is empty, clear selections
- _currentPoint = _startIndex = _endIndex = -1;
- }
- UpdateMessageBroker.informSubscribers(DataSubscriber.SELECTION_CHANGED);
- }
-}
projects / GpsPrune.git / blobdiff