+++ /dev/null
-package tim.prune.gui.colour;
-
-import java.awt.Color;
-import java.text.DateFormat;
-import java.util.Calendar;
-import java.util.HashMap;
-import java.util.TimeZone;
-
-import tim.prune.config.Config;
-import tim.prune.data.DataPoint;
-import tim.prune.data.Timestamp;
-import tim.prune.data.Track;
-import tim.prune.data.TrackInfo;
-
-/**
- * Point colourer giving a different colour to each date.
- * Uses the currently selected timezone, so the results
- * may be different when selecting a different timezone
- */
-public class DateColourer extends DiscretePointColourer
-{
- // Doesn't really matter what format is used here, as long as dates are different
- private static final DateFormat DEFAULT_DATE_FORMAT = DateFormat.getDateInstance();
- // Selected timezone for deciding which date a timestamp falls on
- private TimeZone _selectedTimezone = null;
-
- /**
- * Constructor
- * @param inStartColour start colour of scale
- * @param inEndColour end colour of scale
- * @param inWrapLength number of unique colours before wrap
- */
- public DateColourer(Color inStartColour, Color inEndColour, int inWrapLength)
- {
- super(inStartColour, inEndColour, inWrapLength);
- }
-
- /**
- * Calculate the colours for each of the points in the given track
- * @param inTrackInfo track info object
- */
- @Override
- public synchronized void calculateColours(TrackInfo inTrackInfo)
- {
- // Note, this method needs to be synchronized because otherwise the
- // Calendar objects in the different threads get confused and the
- // wrong colours are generated.
-
- // TODO: Move this timezone-selection into a helper for use by others?
- // Select the current timezone
- final String zoneId = Config.getConfigString(Config.KEY_TIMEZONE_ID);
- if (zoneId == null || zoneId.equals("")) {
- _selectedTimezone = TimeZone.getDefault();
- }
- else {
- _selectedTimezone = TimeZone.getTimeZone(zoneId);
- }
- // initialise the array to the right size
- Track track = inTrackInfo == null ? null : inTrackInfo.getTrack();
- final int numPoints = track == null ? 0 : track.getNumPoints();
- init(numPoints);
- // Make a hashmap of the already-used dates
- HashMap<String, Integer> usedDates = new HashMap<String, Integer>(20);
- // Also store the previous one, because they're probably consecutive
- String prevDate = null;
- int prevIndex = -1;
-
- // loop over track points
- int dayIndex = -1;
- for (int i=0; i<numPoints; i++)
- {
- DataPoint p = track.getPoint(i);
- if (p != null && !p.isWaypoint())
- {
- dayIndex = 0; // default index 0 will be used if no date found
- String date = getDate(p.getTimestamp());
- if (date != null)
- {
- // Check if it's the previous one
- if (prevDate != null && date.equals(prevDate)) {
- dayIndex = prevIndex;
- }
- else
- {
- // Look up in the hashmap to see if it's been used before
- Integer foundIndex = usedDates.get(date);
- if (foundIndex == null)
- {
- // not been used before, so add it
- dayIndex = usedDates.size() + 1;
- usedDates.put(date, dayIndex);
- }
- else
- {
- // found it
- dayIndex = foundIndex;
- }
- // Remember what we've got for the next point
- prevDate = date;
- prevIndex = dayIndex;
- }
- }
- // if date is null (no timestamp or invalid) then dayIndex remains 0
- setColour(i, dayIndex);
- }
- }
-
- // generate the colours needed
- generateDiscreteColours(usedDates.size() + 1);
- }
-
-
- /**
- * Find which date (in the currently selected timezone) the given timestamp falls on
- * @param inTimestamp timestamp
- * @return String containing description of date, or null
- */
- private String getDate(Timestamp inTimestamp)
- {
- if (inTimestamp == null || !inTimestamp.isValid()) {
- return null;
- }
- Calendar cal = inTimestamp.getCalendar(null);
- // use selected time zone, not system one
- DEFAULT_DATE_FORMAT.setTimeZone(_selectedTimezone);
- return DEFAULT_DATE_FORMAT.format(cal.getTime());
- }
-}
projects / GpsPrune.git / blobdiff