[23977] | 1 | package org.greenstone.android.tipple;
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| 2 |
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| 3 | import java.io.File;
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| 4 | import java.text.DecimalFormat;
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| 5 | import java.util.ArrayList;
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| 6 | import java.util.HashMap;
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| 7 | import java.util.HashSet;
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| 8 | import java.util.Set;
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| 9 |
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| 10 | import org.greenstone.android.tipple.TipLocation;
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| 11 |
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| 12 | import org.mapsforge.android.maps.ArrayItemizedMarkerOverlay;
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| 13 | import org.mapsforge.android.maps.CircleOverlay;
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| 14 | import org.mapsforge.android.maps.GeoPoint;
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| 15 | import org.mapsforge.android.maps.MapController;
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| 16 | import org.mapsforge.android.maps.MapView;
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| 17 | import org.mapsforge.android.maps.OverlayMarkerItem;
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| 18 | import org.mapsforge.android.maps.OverlayTextAudioItem;
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| 19 | import org.mapsforge.android.maps.Projection;
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| 20 |
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| 21 | import android.app.Activity;
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| 22 | import android.content.Context;
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| 23 | import android.graphics.Color;
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| 24 | import android.graphics.Paint;
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| 25 | import android.graphics.Point;
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| 26 | import android.graphics.drawable.Drawable;
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| 27 | import android.location.Location;
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| 28 | import android.location.LocationListener;
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| 29 | import android.media.MediaPlayer;
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| 30 | import android.os.Bundle;
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| 31 | import android.os.Vibrator;
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| 32 |
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| 33 | import android.widget.TextView;
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| 34 |
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| 35 | public class TippleLocationListener implements LocationListener
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| 36 | {
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| 37 | public static Location lastKnownLocation = null;
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| 38 |
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| 39 | protected ArrayList<TipLocation> locations_;
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| 40 |
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| 41 | protected Activity activity_;
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| 42 | protected MapView map_view_;
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| 43 | protected TextView text_view_;
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| 44 | protected TipLocationManager tip_location_manager_;
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| 45 |
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| 46 | protected MapController map_controller_;
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| 47 | protected CircleOverlay here_overlay_;
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| 48 | protected ArrayItemizedMarkerOverlay highlight_marker_overlay_;
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| 49 |
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| 50 | protected Vibrator vibrator_;
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| 51 |
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| 52 | protected Set<TipLocation> curr_locations_;
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| 53 | protected Set<TipLocation> prev_locations_;
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| 54 | HashMap<Integer,OverlayMarkerItem> highlight_marker_hash_;
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| 55 |
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| 56 |
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| 57 | public TippleLocationListener(Activity activity, MapView map_view,TextView text_view,
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| 58 | TipLocationManager place_location_manager,
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| 59 | ArrayList<TipLocation> locations)
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| 60 | {
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| 61 | activity_ = activity;
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| 62 | map_view_ = map_view;
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| 63 | text_view_ = text_view;
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| 64 |
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| 65 | tip_location_manager_ = place_location_manager;
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| 66 | locations_ = locations;
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| 67 |
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| 68 | // location aware
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| 69 | Paint circleFillPaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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| 70 | circleFillPaint.setStyle(Paint.Style.FILL);
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| 71 | circleFillPaint.setColor(Color.GREEN);
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| 72 | circleFillPaint.setAlpha(64);
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| 73 |
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| 74 | Paint circleOutlinePaint = new Paint(Paint.ANTI_ALIAS_FLAG);
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| 75 | circleOutlinePaint.setStyle(Paint.Style.STROKE);
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| 76 | circleOutlinePaint.setColor(Color.GREEN);
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| 77 | circleOutlinePaint.setAlpha(128);
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| 78 | circleOutlinePaint.setStrokeWidth(3);
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| 79 | here_overlay_ = new CircleOverlay(circleFillPaint, circleOutlinePaint);
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| 80 | map_view_.getOverlays().add(here_overlay_);
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| 81 |
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| 82 | Drawable highlightMarker = activity_.getResources().getDrawable(R.drawable.markerhighlight);
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| 83 | highlight_marker_overlay_ = new ArrayItemizedMarkerOverlay(highlightMarker,activity);
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| 84 | map_view_.getOverlays().add(highlight_marker_overlay_);
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| 85 |
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| 86 | vibrator_ = (Vibrator) activity
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| 87 | .getSystemService(Context.VIBRATOR_SERVICE);
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| 88 |
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| 89 | curr_locations_ = new HashSet<TipLocation>();
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| 90 | prev_locations_ = new HashSet<TipLocation>();
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| 91 | highlight_marker_hash_ = new HashMap<Integer,OverlayMarkerItem>();
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| 92 |
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| 93 | }
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| 94 |
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| 95 | boolean checking_location_ = false;
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| 96 |
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| 97 | synchronized protected boolean getLock()
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| 98 | {
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| 99 | if (!checking_location_) {
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| 100 | checking_location_ = true;
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| 101 | }
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| 102 |
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| 103 | return checking_location_;
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| 104 | }
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| 105 |
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| 106 | synchronized protected void freeLock()
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| 107 | {
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| 108 | checking_location_ = false;
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| 109 | }
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| 110 |
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| 111 | protected double pointDistance(Point place_point, Point here_point)
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| 112 | {
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| 113 | double delta_x = place_point.x - here_point.x;
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| 114 | double delta_y = place_point.y - here_point.y;
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| 115 | double pixel_distance = Math.sqrt((delta_x * delta_x) + (delta_y * delta_y));
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| 116 |
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| 117 | return pixel_distance;
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| 118 | }
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| 119 |
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| 120 | Point lastLoggedPoint_ = null;
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| 121 |
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| 122 | protected void updateActiveLocations(Location loc)
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| 123 | {
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| 124 | // Find out if the current GPS location lies within the boundaries
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| 125 | // of any of the tour locations
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| 126 | Projection projection = map_view_.getProjection();
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| 127 | byte zoom_level = map_view_.getZoomLevel();
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| 128 | // byte zoom_level = 10; // work at a reasonable level of scale
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| 129 |
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| 130 | float in_out_gap_meters = 3.0f;
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| 131 | float in_out_gap_pixels
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| 132 | = projection.metersToPixels(in_out_gap_meters, zoom_level);
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| 133 |
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| 134 | double here_latitude = loc.getLatitude();
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| 135 | double here_longitude = loc.getLongitude();
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| 136 | GeoPoint here_geopoint = new GeoPoint(here_latitude, here_longitude);
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| 137 | Point here_point = projection.toPoint(here_geopoint, null,zoom_level);
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| 138 |
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| 139 | if (lastLoggedPoint_==null) {
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| 140 | lastLoggedPoint_ = here_point;
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| 141 | TippleActivity.log.optMessage("GPS Location Reading");
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| 142 | }
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| 143 | else {
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| 144 | float far_enough_meters = 3.0f; // 3 meters
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| 145 | float far_enough_pixels = projection.metersToPixels(far_enough_meters, zoom_level);
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| 146 | if (pointDistance(here_point,lastLoggedPoint_)>far_enough_pixels) {
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| 147 | TippleActivity.log.optMessage("GPS Location Reading");
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| 148 | }
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| 149 | }
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| 150 |
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| 151 | for (int i=0; i<locations_.size(); i++) {
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| 152 |
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| 153 | TipLocation place = locations_.get(i);
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| 154 |
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| 155 | double place_latitude = place.getLatitude();
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| 156 | double place_longitude = place.getLongitude();
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| 157 | double radius_meters = place.getRadiusKM() * 1000.0;
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| 158 |
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| 159 | GeoPoint place_geopoint = new GeoPoint(place_latitude,place_longitude);
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| 160 | Point place_point = projection.toPoint(place_geopoint, null,zoom_level);
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| 161 |
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| 162 | float radius_pixel_distance = projection.metersToPixels((float) radius_meters, zoom_level);
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| 163 |
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| 164 | double delta_x = place_point.x - here_point.x;
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| 165 | double delta_y = place_point.y - here_point.y;
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| 166 | double pixel_distance = Math.sqrt((delta_x * delta_x) + (delta_y * delta_y));
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| 167 |
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| 168 | double outside_pixel_distance = radius_pixel_distance + in_out_gap_pixels;
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| 169 | double inside_pixel_distance = radius_pixel_distance;
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| 170 |
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| 171 | if (pixel_distance <= inside_pixel_distance) {
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| 172 |
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| 173 | if (!curr_locations_.contains(place)) {
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| 174 | // User has entered new location on tour
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| 175 |
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| 176 | curr_locations_.add(place);
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| 177 | vibrator_.vibrate(1000);
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| 178 | Bundle bundle = new Bundle();
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| 179 | bundle.putString("placeName", place.getTitle());
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| 180 |
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| 181 | boolean visited_previously = prev_locations_.contains(place);
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| 182 | tip_location_manager_.textToSpeechToLocation(place,visited_previously);
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| 183 |
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| 184 | OverlayTextAudioItem here_marker_item
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| 185 | = (OverlayTextAudioItem) TipLocationManager.itemizedMarkerOverlayArrayList.get(i);
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| 186 |
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| 187 | GeoPoint dm_geopoint = here_marker_item.getPoint();
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| 188 | String title = here_marker_item.getTitle();
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| 189 |
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| 190 | //itemized_overlay.onTap(i);
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| 191 |
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| 192 | OverlayMarkerItem highlight_marker_item = new OverlayMarkerItem(dm_geopoint,title);
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| 193 | highlight_marker_hash_.put(i,highlight_marker_item);
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| 194 | highlight_marker_overlay_.addOverlay(highlight_marker_item);
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| 195 |
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| 196 |
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| 197 | try {
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| 198 | // Cue up audio alert
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| 199 | String audio_dir = TippleActivity.audioDirectory;
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| 200 | File alert_file = new File(audio_dir, "BeepMorseSonar.wav");
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| 201 | String alert_filename = alert_file.getAbsolutePath();
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| 202 |
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| 203 | MediaPlayer mp = new MediaPlayer();
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| 204 | mp.setDataSource(alert_filename);
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| 205 | mp.prepare();
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| 206 | mp.start();
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| 207 | }
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| 208 | catch (Exception e) {
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| 209 | System.err.println("Failed to play audio alert for active GPS location");
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| 210 | e.printStackTrace();
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| 211 | }
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| 212 |
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| 213 | // Now record the fact we've been here
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| 214 | prev_locations_.add(place);
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| 215 |
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| 216 | }
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| 217 |
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| 218 | }
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| 219 |
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| 220 | else if (pixel_distance >= outside_pixel_distance) {
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| 221 |
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| 222 | if (curr_locations_.contains(place)) {
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| 223 | curr_locations_.remove(place);
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| 224 |
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| 225 | // TipLocationManager.itemizedMarkerOverlay.unTap();
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| 226 |
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| 227 | OverlayMarkerItem highlight_marker_item = highlight_marker_hash_.remove(i);
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| 228 | highlight_marker_overlay_.removeOverlay(highlight_marker_item);
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| 229 | }
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| 230 | }
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| 231 | }
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| 232 | }
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| 233 | @Override
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| 234 | public void onLocationChanged(Location loc)
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| 235 | {
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| 236 | if (loc != null) {
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| 237 |
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| 238 | //System.err.println("TipLocationListener::onLocationChaged -- start");
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| 239 | lastKnownLocation = loc;
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| 240 |
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| 241 | if (getLock()) {
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| 242 | updateActiveLocations(loc);
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| 243 | freeLock();
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| 244 | }
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| 245 |
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| 246 | DecimalFormat truncPlaces = new DecimalFormat("0.0000000000");
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| 247 | double longitude = loc.getLongitude();
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| 248 | double latitude = loc.getLatitude();
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| 249 |
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| 250 | String trunc_long = truncPlaces.format(longitude);
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| 251 | String trunc_lat = truncPlaces.format(latitude);
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| 252 |
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| 253 | String text_mess = "(Long,Lat): (" + trunc_long + "," + trunc_lat + ")";
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| 254 | text_view_.setText(text_mess);
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| 255 |
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| 256 | // location aware
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| 257 | GeoPoint point = new GeoPoint(latitude, longitude);
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| 258 | here_overlay_.setCircleData(point, loc.getAccuracy());
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| 259 |
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| 260 | // Use the following line if you want to map to auto center on the GPS location
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| 261 | boolean centre_on_gps_loc = TippleActivity.sharedPreferences.getBoolean("centreOnGPSLoc", false);
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| 262 | if (centre_on_gps_loc) {
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| 263 | MapController map_controller = map_view_.getController();
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| 264 | if (map_controller != null) {
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| 265 | map_controller.setCenter(point);
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| 266 | }
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| 267 | }
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| 268 |
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| 269 | //System.err.println("TipLocationListener::onLocationChaged -- finished");
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| 270 | }
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| 271 | }
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| 272 |
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| 273 | @Override
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| 274 | public void onProviderDisabled(String provider)
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| 275 | {
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| 276 | // TODO Auto-generated method stub
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| 277 | System.err.println("TipLocationListener::onProviderDisabled()");
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| 278 | }
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| 279 |
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| 280 | @Override
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| 281 | public void onProviderEnabled(String provider)
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| 282 | {
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| 283 | // TODO Auto-generated method stub
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| 284 | System.err.println("TipLocationListener::onProviderEnabled()");
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| 285 |
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| 286 | }
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| 287 |
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| 288 | @Override
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| 289 | public void onStatusChanged(String provider, int status, Bundle extras)
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| 290 | {
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| 291 | // TODO Auto-generated method stub
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| 292 | System.err.println("TipLocationListener::onStatusChanged()");
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| 293 |
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| 294 | }
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| 295 |
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| 296 | }
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