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Viewing changes to src/org/opensatnav/android/services/TripStatistics.java

  • Committer: Kieran Fleming
  • Date: 2010-12-13 13:13:48 UTC
  • Revision ID: kieran.fleming@gmail.com-20101213131348-pixo12i0wjf11jk3
Add all the missing stuff from the failed package rename

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src/org/opensatnav/android/services/TripStatistics.java
 
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package org.opensatnav.android.services;
 
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import java.text.DecimalFormat;
 
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import java.util.ArrayList;
 
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import java.util.Collection;
 
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import org.andnav.osm.views.util.Util;
 
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import org.opensatnav.android.TripStatisticsController;
 
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import org.opensatnav.android.util.FormatHelper;
 
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import android.content.Context;
 
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import android.location.Location;
 
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import android.util.Log;
 
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public class TripStatistics {
 
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        private int pointsReceivedCount;
 
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        private long tripStartTimeMilisec;
 
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        private long lastPointTimeMilisec;
 
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        private float tripDistanceMeters;
 
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        private Context ctx;
 
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        // Previous Point
 
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        private Location lastLocatPoint = null;
 
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        private Collection<TripStatisticsListener> listeners = null;
 
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        private DecimalFormat formatter;
 
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        public TripStatistics(Context ctx) {
 
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                initializeStats();
 
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                this.ctx = ctx;
 
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        }
 
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        public TripStatistics(TripStatisticsListener firstListener,Context ctx) {
 
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                this(ctx);
 
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                // Tried to do this from where the service is started, but 
 
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                // onCreate() doesn't run until after some time later. 
 
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                addTripStatsListener(firstListener);
 
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        }
 
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        private void initializeStats() {
 
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                pointsReceivedCount = 0;
 
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                tripStartTimeMilisec = -1;
 
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                lastPointTimeMilisec = -1;
 
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                tripDistanceMeters = 0;
 
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                formatter = new DecimalFormat();
 
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        }
 
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        public void addTripStatsListener(TripStatisticsListener listener) {
 
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                if( listeners == null ) {
 
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                        listeners = new ArrayList<TripStatisticsListener>();
 
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                }
 
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                listeners.add(listener);
 
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                listener.tripStatisticsChanged(this);  
 
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        }
 
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        public void removeTripStatsListener(TripStatisticsListener listener) {
 
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                if( listeners.contains(listener) ) {
 
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                        listeners.remove(listener);
 
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                }
 
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        }
 
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        public void removeAllTripStatsListeners() {
 
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                listeners = null;
 
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        }
 
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        public void addNewLocationPoint(Location newLocation, Location oldLocation) {
 
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                pointsReceivedCount++;
 
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                if( tripStartTimeMilisec == -1 ) {
 
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                        tripStartTimeMilisec = newLocation.getTime();
 
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                }
 
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                lastPointTimeMilisec = newLocation.getTime();
 
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                if(lastLocatPoint != null && Util.isValidSpeed(lastPointTimeMilisec, newLocation.getSpeed(), oldLocation.getTime(), oldLocation.getSpeed())) {
 
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                        tripDistanceMeters += newLocation.distanceTo(lastLocatPoint);
 
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                }
 
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                lastLocatPoint = newLocation;
 
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                if( pointsReceivedCount > 1 ) {
 
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                        callAllListeners(); // Can't deliver with just one point.
 
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                }
 
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        }
 
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        private void callAllListeners() {
 
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                if( listeners != null ) {
 
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                        for( TripStatisticsListener l : listeners) {
 
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                                l.tripStatisticsChanged(this);
 
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                        }
 
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                } else {
 
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                        Log.v("TripStatistics", "No listeners for TripStats");
 
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                }
 
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        }
 
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        /** Returns the aver trip speed in m/s */
 
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        public float getAverageTripSpeed() {
 
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                if( pointsReceivedCount == 0 ) {
 
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                        return 0f;
 
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                } else {
 
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                        return getTripDistance() / (getTripTime() / 1000);
 
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                }
 
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        }
 
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        /** Return total trip time in milisec */
 
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        public long getTripTime() {
 
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                if( pointsReceivedCount == 0 ) {
 
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                        return 0;
 
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                } else {
 
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                        return lastPointTimeMilisec - tripStartTimeMilisec;
 
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                }
 
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        }
 
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        /** Returns total trip distance in meters */
 
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        public float getTripDistance() {
 
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                if( pointsReceivedCount == 0 ) {
 
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                        return 0;
 
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                } else {
 
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                        return tripDistanceMeters;
 
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                }
 
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        }
 
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        /* Note: the instantenous speed is newPoint.getSpeed()  */
 
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        public float getInstantSpeed() {
 
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                if( pointsReceivedCount == 0 ) {
 
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                        return 0;
 
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                } else {
 
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                        return lastLocatPoint.getSpeed();
 
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                }
 
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        }
 
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        public void resetStatistics() {
 
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                initializeStats();
 
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                callAllListeners();
 
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        }
 
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        public String getAverageTripSpeedString() {
 
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                return getSpeedString(getAverageTripSpeed());
 
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        }
 
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        public String getInstantSpeedString() {
 
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                return getSpeedString(getInstantSpeed());
 
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        }
 
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        private String getSpeedString(float speed) {
 
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                String speedString = "";
 
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                speedString = 
 
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                        new FormatHelper(ctx).formatSpeed(speed);
 
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                return speedString;
 
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        }
 
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        public String getTripTimeString() {
 
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                int tripTimeSec = Math.round(getTripTime() / 1000f);
 
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                formatter.applyLocalizedPattern("#0");
 
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                int hr = tripTimeSec / 3600;
 
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                String hrStr = formatter.format(hr);
 
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                formatter.applyLocalizedPattern("00");
 
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                int min = (tripTimeSec - hr * 3600) / 60;
 
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                String minStr = formatter.format(min);
 
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                int sec = tripTimeSec % 60;
 
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                String secStr = formatter.format(sec);
 
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                return hrStr + ":" + minStr + ":" + secStr;
 
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        }
 
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        public String getTripDistanceString() {
 
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                String distance = "";
 
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                distance = 
 
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                        new FormatHelper(ctx).formatDistance((int)getTripDistance());
 
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                return distance;
 
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        }
 
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        public static class TripStatisticsStrings {
 
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                public String averSpeed;
 
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                public String instSpeed;
 
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                public String tripDistance;
 
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                public String tripDuration;
 
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        }
 
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}