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   1 /*
   2  * Copyright © 2010 Anthony Towns <aj@erisian.com.au>
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; version 2 of the License.
   7  *
   8  * This program is distributed in the hope that it will be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  16  */
  17
  18 package org.altusmetrum.altoslib_6;
  19
  20 import java.io.*;
  21 import java.lang.*;
  22 import java.util.*;
  23 import java.util.concurrent.*;
  24
  25 public class AltosMap implements AltosFlightDisplay, AltosMapTileListener, AltosMapStoreListener {
  26
  27         static final int px_size = 512;
  28
  29         static final int maptype_hybrid = 0;
  30         static final int maptype_roadmap = 1;
  31         static final int maptype_satellite = 2;
  32         static final int maptype_terrain = 3;
  33         static final int maptype_default = maptype_hybrid;
  34
  35         static final int default_zoom = 15;
  36         static final int min_zoom = 3;
  37         static final int max_zoom = 21;
  38
  39         static final String[] maptype_names = {
  40                 "hybrid",
  41                 "roadmap",
  42                 "satellite",
  43                 "terrain"
  44         };
  45
  46         public static final String[] maptype_labels = {
  47                 "Hybrid",
  48                 "Roadmap",
  49                 "Satellite",
  50                 "Terrain"
  51         };
  52
  53         AltosMapInterface       map_interface;
  54
  55         AltosMapCache           cache;
  56
  57         LinkedList<AltosMapMark> marks = new LinkedList<AltosMapMark>();
  58
  59         LinkedList<AltosMapZoomListener> zoom_listeners = new LinkedList<AltosMapZoomListener>();
  60
  61         public void add_zoom_listener(AltosMapZoomListener listener) {
  62                 if (!zoom_listeners.contains(listener))
  63                         zoom_listeners.add(listener);
  64         }
  65
  66         public void remove_zoom_listener(AltosMapZoomListener listener) {
  67                 zoom_listeners.remove(listener);
  68         }
  69
  70         boolean         have_boost = false;
  71         boolean         have_landed = false;
  72
  73         ConcurrentHashMap<AltosPointInt,AltosMapTile> tiles = new ConcurrentHashMap<AltosPointInt,AltosMapTile>();
  74         int             load_radius;
  75         AltosLatLon     load_centre = null;
  76         AltosMapTileListener    load_listener;
  77
  78         int             zoom = AltosMap.default_zoom;
  79         int             maptype = AltosMap.maptype_default;
  80
  81         long            user_input_time;
  82
  83         /* Milliseconds to wait after user action before auto-scrolling
  84          */
  85         static final long auto_scroll_delay = 20 * 1000;
  86
  87         AltosMapTransform       transform;
  88         AltosLatLon             centre;
  89
  90         public void reset() {
  91                 // nothing
  92         }
  93
  94         /* MapInterface wrapping functions */
  95         public void set_units() {
  96                 map_interface.set_units();
  97         }
  98
  99         public void repaint(AltosMapRectangle damage, int pad) {
 100                 map_interface.repaint(damage, pad);
 101         }
 102
 103         public void repaint(double x, double y, double w, double h) {
 104                 map_interface.repaint(x, y, w, h);
 105         }
 106
 107         public void repaint() {
 108                 map_interface.repaint();
 109         }
 110
 111         public int width() {
 112                 return map_interface.width();
 113         }
 114
 115         public int height() {
 116                 return map_interface.height();
 117         }
 118
 119         public AltosPointInt floor(AltosPointDouble point) {
 120                 return new AltosPointInt ((int) Math.floor(point.x / AltosMap.px_size) * AltosMap.px_size,
 121                                               (int) Math.floor(point.y / AltosMap.px_size) * AltosMap.px_size);
 122         }
 123
 124         public AltosPointInt ceil(AltosPointDouble point) {
 125                 return new AltosPointInt ((int) Math.ceil(point.x / AltosMap.px_size) * AltosMap.px_size,
 126                                               (int) Math.ceil(point.y / AltosMap.px_size) * AltosMap.px_size);
 127         }
 128
 129         public void notice_user_input() {
 130                 user_input_time = System.currentTimeMillis();
 131         }
 132
 133         public boolean recent_user_input() {
 134                 return (System.currentTimeMillis() - user_input_time) < auto_scroll_delay;
 135         }
 136
 137         public boolean far_from_centre(AltosLatLon lat_lon) {
 138
 139                 if (centre == null || transform == null)
 140                         return true;
 141
 142                 AltosPointDouble        screen = transform.screen(lat_lon);
 143
 144                 int             width = width();
 145                 int             dx = Math.abs ((int) (double) screen.x - width/2);
 146
 147                 if (dx > width / 4)
 148                         return true;
 149
 150                 int             height = height();
 151                 int             dy = Math.abs ((int) (double) screen.y - height/2);
 152
 153                 if (dy > height / 4)
 154                         return true;
 155
 156                 return false;
 157         }
 158
 159         public void font_size_changed(int font_size) {
 160                 map_interface.line.font_size_changed(font_size);
 161                 for (AltosMapTile tile : tiles.values())
 162                         tile.font_size_changed(font_size);
 163                 repaint();
 164         }
 165
 166         public void units_changed(boolean imperial_units) {
 167         }
 168
 169         private void set_transform() {
 170                 transform = new AltosMapTransform(width(), height(), zoom, centre);
 171                 repaint();
 172         }
 173
 174         public boolean set_zoom(int zoom) {
 175                 if (AltosMap.min_zoom <= zoom && zoom <= AltosMap.max_zoom && zoom != this.zoom) {
 176                         this.zoom = zoom;
 177                         tiles.clear();
 178                         set_transform();
 179
 180                         for (AltosMapZoomListener listener : zoom_listeners)
 181                                 listener.zoom_changed(this.zoom);
 182
 183                         return true;
 184                 }
 185                 return false;
 186         }
 187
 188         public int get_zoom() {
 189                 return zoom;
 190         }
 191
 192         public boolean set_maptype(int maptype) {
 193                 if (maptype != this.maptype) {
 194                         this.maptype = maptype;
 195                         tiles.clear();
 196                         repaint();
 197                         return true;
 198                 }
 199                 return false;
 200         }
 201
 202         public void show(AltosState state, AltosListenerState listener_state) {
 203
 204                 /* If insufficient gps data, nothing to update
 205                  */
 206                 AltosGPS        gps = state.gps;
 207
 208                 if (gps == null)
 209                         return;
 210
 211                 if (!gps.locked && gps.nsat < 4)
 212                         return;
 213
 214                 AltosMapRectangle       damage = map_interface.path.add(gps.lat, gps.lon, state.state);
 215
 216                 switch (state.state) {
 217                 case AltosLib.ao_flight_boost:
 218                         if (!have_boost) {
 219                                 add_mark(gps.lat, gps.lon, state.state);
 220                                 have_boost = true;
 221                         }
 222                         break;
 223                 case AltosLib.ao_flight_landed:
 224                         if (!have_landed) {
 225                                 add_mark(gps.lat, gps.lon, state.state);
 226                                 have_landed = true;
 227                         }
 228                         break;
 229                 }
 230
 231                 if (damage != null)
 232                         repaint(damage, AltosMapPath.stroke_width);
 233                 maybe_centre(gps.lat, gps.lon);
 234         }
 235
 236         public void centre(AltosLatLon lat_lon) {
 237                 centre = lat_lon;
 238                 set_transform();
 239         }
 240
 241         public void centre(double lat, double lon) {
 242                 centre(new AltosLatLon(lat, lon));
 243         }
 244
 245         public void centre(AltosState state) {
 246                 if (!state.gps.locked && state.gps.nsat < 4)
 247                         return;
 248                 centre(state.gps.lat, state.gps.lon);
 249         }
 250
 251         public void maybe_centre(double lat, double lon) {
 252                 AltosLatLon     lat_lon = new AltosLatLon(lat, lon);
 253                 if (centre == null || (!recent_user_input() && far_from_centre(lat_lon)))
 254                         centre(lat_lon);
 255         }
 256
 257         public void add_mark(double lat, double lon, int state) {
 258                 synchronized(marks) {
 259                         marks.add(map_interface.new_mark(lat, lon, state));
 260                 }
 261                 repaint();
 262         }
 263
 264         public void clear_marks() {
 265                 synchronized(marks) {
 266                         marks.clear();
 267                 }
 268         }
 269
 270         private void make_tiles() {
 271                 AltosPointInt   upper_left;
 272                 AltosPointInt   lower_right;
 273
 274                 if (load_centre != null) {
 275                         AltosPointInt centre = floor(transform.point(load_centre));
 276
 277                         upper_left = new AltosPointInt(centre.x - load_radius * AltosMap.px_size,
 278                                                                centre.y - load_radius * AltosMap.px_size);
 279                         lower_right = new AltosPointInt(centre.x + load_radius * AltosMap.px_size,
 280                                                                 centre.y + load_radius * AltosMap.px_size);
 281                 } else {
 282                         upper_left = floor(transform.screen_point(new AltosPointDouble(0.0, 0.0)));
 283                         lower_right = floor(transform.screen_point(new AltosPointDouble(width(), height())));
 284                 }
 285                 LinkedList<AltosPointInt> to_remove = new LinkedList<AltosPointInt>();
 286
 287                 for (AltosPointInt point : tiles.keySet()) {
 288                         if (point.x < upper_left.x || lower_right.x < point.x ||
 289                             point.y < upper_left.y || lower_right.y < point.y) {
 290                                 to_remove.add(point);
 291                         }
 292                 }
 293
 294                 for (AltosPointInt point : to_remove)
 295                         tiles.remove(point);
 296
 297                 cache.set_cache_size((width() / AltosMap.px_size + 2) * (height() / AltosMap.px_size + 2));
 298                 for (int y = (int) upper_left.y; y <= lower_right.y; y += AltosMap.px_size) {
 299                         for (int x = (int) upper_left.x; x <= lower_right.x; x += AltosMap.px_size) {
 300                                 AltosPointInt point = new AltosPointInt(x, y);
 301
 302                                 if (!tiles.containsKey(point)) {
 303                                         AltosLatLon     ul = transform.lat_lon(new AltosPointDouble(x, y));
 304                                         AltosLatLon     center = transform.lat_lon(new AltosPointDouble(x + AltosMap.px_size/2, y + AltosMap.px_size/2));
 305                                         AltosMapTile tile = new AltosMapTile(this, ul, center, zoom, maptype,
 306                                                                              AltosMap.px_size);
 307                                         tiles.put(point, tile);
 308                                 }
 309                         }
 310                 }
 311         }
 312
 313         public void set_load_params(double lat, double lon, int radius, AltosMapTileListener listener) {
 314                 load_centre = new AltosLatLon(lat, lon);
 315                 load_radius = radius;
 316                 load_listener = listener;
 317                 centre(lat, lon);
 318                 make_tiles();
 319                 for (AltosMapTile tile : tiles.values()) {
 320                         tile.add_store_listener(this);
 321                         if (tile.store_status() != AltosMapTile.loading)
 322                                 listener.notify_tile(tile, tile.store_status());
 323                 }
 324                 repaint();
 325         }
 326
 327         public String getName() {
 328                 return "Map";
 329         }
 330
 331         /* AltosMapTileListener methods */
 332         public synchronized void notify_tile(AltosMapTile tile, int status) {
 333                 for (AltosPointInt point : tiles.keySet()) {
 334                         if (tile == tiles.get(point)) {
 335                                 AltosPointInt   screen = transform.screen(point);
 336                                 repaint(screen.x, screen.y, AltosMap.px_size, AltosMap.px_size);
 337                         }
 338                 }
 339         }
 340
 341         /* AltosMapStoreListener methods */
 342         public synchronized void notify_store(AltosMapStore store, int status) {
 343                 if (load_listener != null) {
 344                         for (AltosMapTile tile : tiles.values())
 345                                 if (store.equals(tile.store))
 346                                         load_listener.notify_tile(tile, status);
 347                 }
 348         }
 349
 350         public AltosMap(AltosMapInterface map_interface) {
 351                 this.map_interface = map_interface;
 352                 cache = new AltosMapCache(map_interface);
 353                 centre(0, 0);
 354         }
 355 }