git.gag.com Git - fw/altos/blob - altosuilib/AltosSiteMap.java

   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.altosuilib_2;
  19
  20 import java.awt.*;
  21 import java.awt.event.*;
  22 import javax.swing.*;
  23 import java.io.*;
  24 import java.lang.Math;
  25 import java.awt.geom.*;
  26 import java.util.*;
  27 import java.util.concurrent.*;
  28 import org.altusmetrum.altoslib_4.*;
  29
  30 class MapPoint {
  31         double  lat, lon;
  32         int     state;
  33
  34         public MapPoint(double lat, double lon, int state) {
  35                 this.lat = lat;
  36                 this.lon = lon;
  37                 this.state = state;
  38         }
  39
  40         public boolean equals(MapPoint other) {
  41                 if (other == null)
  42                         return false;
  43                 if (other.lat != lat)
  44                         return false;
  45                 if (other.lon != lon)
  46                         return false;
  47                 if (other.state != state)
  48                         return false;
  49                 return true;
  50         }
  51 }
  52
  53 public class AltosSiteMap extends JComponent implements AltosFlightDisplay, MouseMotionListener, MouseListener, HierarchyBoundsListener {
  54         // preferred vertical step in a tile in naut. miles
  55         // will actually choose a step size between x and 2x, where this
  56         // is 1.5x
  57         static final double tile_size_nmi = 0.75;
  58
  59         static final int px_size = 512;
  60
  61         static final int MAX_TILE_DELTA = 100;
  62
  63         static final int maptype_hybrid = 0;
  64         static final int maptype_roadmap = 1;
  65         static final int maptype_satellite = 2;
  66         static final int maptype_terrain = 3;
  67
  68         int maptype = maptype_hybrid;
  69
  70         static final String[] maptype_names = {
  71                 "hybrid",
  72                 "roadmap",
  73                 "satellite",
  74                 "terrain"
  75         };
  76
  77         static final String[] maptype_labels = {
  78                 "Hybrid",
  79                 "Roadmap",
  80                 "Satellite",
  81                 "Terrain"
  82         };
  83
  84         LinkedList<MapPoint> points = new LinkedList<MapPoint>();
  85
  86         private static Point2D.Double translatePoint(Point2D.Double p,
  87                         Point2D.Double d)
  88         {
  89                 return new Point2D.Double(p.x + d.x, p.y + d.y);
  90         }
  91
  92         static class LatLng {
  93                 public double lat, lng;
  94                 public LatLng(double lat, double lng) {
  95                         this.lat = lat;
  96                         this.lng = lng;
  97                 }
  98         }
  99
 100         // based on google js
 101         //  http://maps.gstatic.com/intl/en_us/mapfiles/api-3/2/10/main.js
 102         // search for fromLatLngToPoint and fromPointToLatLng
 103         /*
 104         private static Point2D.Double pt(LatLng latlng, int zoom) {
 105                 double scale_x = 256/360.0 * Math.pow(2, zoom);
 106                 double scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
 107                 return pt(latlng, scale_x, scale_y);
 108         }
 109         */
 110
 111         private static Point2D.Double pt(LatLng latlng,
 112                                          double scale_x, double scale_y)
 113         {
 114                 Point2D.Double res = new Point2D.Double();
 115                 double e;
 116
 117                 res.x = latlng.lng * scale_x;
 118
 119                 e = Math.sin(Math.toRadians(latlng.lat));
 120                 e = Math.max(e,-(1-1.0E-15));
 121                 e = Math.min(e,  1-1.0E-15 );
 122
 123                 res.y = 0.5*Math.log((1+e)/(1-e))*-scale_y;
 124                 return res;
 125         }
 126
 127         static private LatLng latlng(Point2D.Double pt,
 128                                      double scale_x, double scale_y)
 129         {
 130                 double lat, lng;
 131                 double rads;
 132
 133                 lng = pt.x/scale_x;
 134                 rads = 2 * Math.atan(Math.exp(-pt.y/scale_y));
 135                 lat = Math.toDegrees(rads - Math.PI/2);
 136
 137                 return new LatLng(lat,lng);
 138         }
 139
 140         static final int default_zoom = 15;
 141         static final int min_zoom = 3;
 142         static final int max_zoom = 21;
 143
 144         int zoom = default_zoom;
 145
 146         double scale_x, scale_y;
 147
 148         int radius;     /* half width/height of tiles to load */
 149
 150         private Point2D.Double pt(double lat, double lng) {
 151                 return pt(new LatLng(lat, lng), scale_x, scale_y);
 152         }
 153
 154         private LatLng latlng(double x, double y) {
 155                 return latlng(new Point2D.Double(x,y), scale_x, scale_y);
 156         }
 157         /*
 158         private LatLng latlng(Point2D.Double pt) {
 159                 return latlng(pt, scale_x, scale_y);
 160         }
 161         */
 162
 163         private LatLng latlng(Point pt) {
 164                 return latlng(new Point2D.Double(pt.x, pt.y), scale_x, scale_y);
 165         }
 166
 167         ConcurrentHashMap<Point,AltosSiteMapTile> mapTiles = new ConcurrentHashMap<Point,AltosSiteMapTile>();
 168         Point2D.Double centre;
 169
 170         private Point2D.Double tileCoordOffset(Point p) {
 171                 return new Point2D.Double(centre.x - p.x*px_size,
 172                                           centre.y - p.y*px_size);
 173         }
 174
 175         private Point tileOffset(Point2D.Double p) {
 176                 return new Point((int)Math.floor((centre.x+p.x)/px_size),
 177                                  (int)Math.floor((centre.y+p.y)/px_size));
 178         }
 179
 180         private Point2D.Double getBaseLocation(double lat, double lng) {
 181                 Point2D.Double locn = pt(0,0), north_step;
 182
 183                 scale_x = 256/360.0 * Math.pow(2, zoom);
 184                 scale_y = 256/(2.0*Math.PI) * Math.pow(2, zoom);
 185                 locn = pt(lat, lng);
 186                 locn.x = -px_size * Math.floor(locn.x/px_size);
 187                 locn.y = -px_size * Math.floor(locn.y/px_size);
 188                 return locn;
 189         }
 190
 191         public void reset() {
 192                 // nothing
 193         }
 194
 195         public void set_font() {
 196                 for (AltosSiteMapTile tile : mapTiles.values())
 197                         tile.set_font(AltosUILib.value_font);
 198         }
 199
 200         static final int load_mode_cached = 1;
 201         static final int load_mode_uncached = 2;
 202
 203         private boolean load_map(final AltosSiteMapTile tile,
 204                                  final File pngfile, String pngurl,
 205                                  int load_mode)
 206         {
 207                 boolean has_map = AltosSiteMapCache.has_map(pngfile, pngurl);
 208                 if ((load_mode & load_mode_uncached) == 0 && !has_map)
 209                         return false;
 210                 if ((load_mode & load_mode_cached) == 0 && has_map)
 211                         return false;
 212
 213                 tile.set_status(AltosSiteMapCache.loading);
 214                 int status = AltosSiteMapCache.fetch_map(pngfile, pngurl);
 215                 if (status == AltosSiteMapCache.success) {
 216                         if (SwingUtilities.isEventDispatchThread())
 217                                 tile.load_map(pngfile);
 218                         else {
 219                                 SwingUtilities.invokeLater(new Runnable() {
 220                                                 public void run() {
 221                                                         tile.load_map(pngfile);
 222                                                 }
 223                                         });
 224                         }
 225                 } else {
 226                         tile.set_status(status);
 227                         System.out.printf("# Failed to fetch file %s (status %d)\n", pngfile, status);
 228                         System.out.printf(" wget -O '%s' '%s'\n", pngfile, pngurl);
 229                         System.out.printf(" sleep 1\n");
 230                 }
 231                 return true;
 232         }
 233
 234
 235         class AltosSiteMapPrefetch {
 236                 int     x;
 237                 int     y;
 238                 int     result;
 239                 File    pngfile;
 240                 String  pngurl;
 241         }
 242
 243         public AltosSiteMapPrefetch prefetchMap(int x, int y) {
 244                 AltosSiteMapPrefetch    prefetch = new AltosSiteMapPrefetch();
 245                 LatLng map_latlng = latlng(
 246                         -centre.x + x*px_size + px_size/2,
 247                         -centre.y + y*px_size + px_size/2);
 248                 prefetch.pngfile = MapFile(map_latlng.lat, map_latlng.lng, zoom, maptype_hybrid);
 249                 prefetch.pngurl = MapURL(map_latlng.lat, map_latlng.lng, zoom, maptype_hybrid);
 250                 if (AltosSiteMapCache.has_map(prefetch.pngfile, prefetch.pngurl)) {
 251                         prefetch.result = 1;
 252                 } else if (AltosSiteMapCache.fetch_map(prefetch.pngfile, prefetch.pngurl) == AltosSiteMapCache.success) {
 253                         prefetch.result = 0;
 254                 } else {
 255                         prefetch.result = -1;
 256                 }
 257                 return prefetch;
 258         }
 259
 260         public static void prefetchMaps(double lat, double lng) {
 261                 int w = AltosSiteMapPreload.width;
 262                 int h = AltosSiteMapPreload.height;
 263                 AltosSiteMap asm = new AltosSiteMap(true);
 264                 asm.centre = asm.getBaseLocation(lat, lng);
 265
 266                 int dx = -w/2, dy = -h/2;
 267                 for (int y = dy; y < h+dy; y++) {
 268                         for (int x = dx; x < w+dx; x++) {
 269                                 AltosSiteMapPrefetch prefetch = asm.prefetchMap(x, y);
 270                                 switch (prefetch.result) {
 271                                 case 1:
 272                                         System.out.printf("Already have %s\n", prefetch.pngfile);
 273                                         break;
 274                                 case 0:
 275                                         System.out.printf("Fetched map %s\n", prefetch.pngfile);
 276                                         break;
 277                                 case -1:
 278                                         System.out.printf("# Failed to fetch file %s\n", prefetch.pngfile);
 279                                         System.out.printf(" wget -O '%s' ''\n",
 280                                                           prefetch.pngfile, prefetch.pngurl);
 281                                         break;
 282                                 }
 283                         }
 284                 }
 285         }
 286
 287         public File init_map(Point offset, int load_mode) {
 288                 AltosSiteMapTile tile = mapTiles.get(offset);
 289                 Point2D.Double coord = tileCoordOffset(offset);
 290
 291                 LatLng map_latlng = latlng(px_size/2-coord.x, px_size/2-coord.y);
 292
 293                 File pngfile = MapFile(map_latlng.lat, map_latlng.lng, zoom, maptype);
 294                 String pngurl = MapURL(map_latlng.lat, map_latlng.lng, zoom, maptype);
 295                 load_map(tile, pngfile, pngurl, load_mode);
 296                 return pngfile;
 297         }
 298
 299         public void initAndFinishMapAsync (final AltosSiteMapTile tile, final Point offset) {
 300                 Thread thread = new Thread() {
 301                                 public void run() {
 302                                         init_map(offset, load_mode_cached|load_mode_uncached);
 303                                         SwingUtilities.invokeLater( new Runnable() {
 304                                                         public void run() {
 305                                                                 addTileAt(tile, offset);
 306                                                         }
 307                                                 } );
 308                                 }
 309                         };
 310                 thread.start();
 311         }
 312
 313         double  lat, lon;
 314         boolean base_location_set = false;
 315
 316         public void clear_base_location() {
 317                 base_location_set = false;
 318                 circle_set = false;
 319                 points = new LinkedList<MapPoint>();
 320                 line_start = line_end = null;
 321         }
 322
 323         public void setBaseLocation(double lat, double lng) {
 324                 this.lat = lat;
 325                 this.lon = lng;
 326                 base_location_set = true;
 327
 328                 centre = getBaseLocation(lat, lng);
 329                 scrollRocketToVisible(pt(lat,lng));
 330         }
 331
 332         private void initMaps(double lat, double lng) {
 333                 setBaseLocation(lat, lng);
 334
 335                 for (AltosSiteMapTile tile : mapTiles.values()) {
 336                         tile.clearMap();
 337                         tile.set_status(AltosSiteMapCache.loading);
 338                 }
 339                 Thread thread = new Thread() {
 340                                 public void run() {
 341                                         for (Point k : mapTiles.keySet())
 342                                                 init_map(k, load_mode_cached);
 343                                         for (Point k : mapTiles.keySet())
 344                                                 init_map(k, load_mode_uncached);
 345                                 }
 346                         };
 347                 thread.start();
 348         }
 349
 350         private static File MapFile(double lat, double lng, int zoom, int maptype) {
 351                 char chlat = lat < 0 ? 'S' : 'N';
 352                 char chlng = lng < 0 ? 'W' : 'E';
 353                 if (lat < 0) lat = -lat;
 354                 if (lng < 0) lng = -lng;
 355                 String maptype_string = String.format("%s-", maptype_names[maptype]);
 356                 String format_string;
 357                 if (maptype == maptype_hybrid || maptype == maptype_satellite || maptype == maptype_terrain)
 358                         format_string = "jpg";
 359                 else
 360                         format_string = "png";
 361                 return new File(AltosUIPreferences.mapdir(),
 362                                 String.format("map-%c%.6f,%c%.6f-%s%d.%s",
 363                                               chlat, lat, chlng, lng, maptype_string, zoom, format_string));
 364         }
 365
 366         private static String MapURL(double lat, double lng, int zoom, int maptype) {
 367                 String format_string;
 368                 if (maptype == maptype_hybrid || maptype == maptype_satellite || maptype == maptype_terrain)
 369                         format_string = "jpg";
 370                 else
 371                         format_string = "png32";
 372
 373                 if (AltosUIVersion.has_google_maps_api_key())
 374                         return String.format("http://maps.google.com/maps/api/staticmap?center=%.6f,%.6f&zoom=%d&size=%dx%d&sensor=false&maptype=%s&format=%s&key=%s",
 375                                              lat, lng, zoom, px_size, px_size, maptype_names[maptype], format_string, AltosUIVersion.google_maps_api_key);
 376                 else
 377                         return String.format("http://maps.google.com/maps/api/staticmap?center=%.6f,%.6f&zoom=%d&size=%dx%d&sensor=false&maptype=%s&format=%s",
 378                                              lat, lng, zoom, px_size, px_size, maptype_names[maptype], format_string);
 379         }
 380
 381         boolean initialised = false;
 382         MapPoint last_point = null;
 383         int last_state = -1;
 384
 385         public void show(double lat, double lon) {
 386                 System.out.printf ("show %g %g\n", lat, lon);
 387                 return;
 388 //              initMaps(lat, lon);
 389 //              scrollRocketToVisible(pt(lat, lon));
 390         }
 391
 392         JLabel  zoom_label;
 393
 394         public void set_zoom_label() {
 395                 zoom_label.setText(String.format("Zoom %d", zoom - default_zoom));
 396         }
 397
 398         public void set_zoom(int zoom) {
 399                 if (min_zoom <= zoom && zoom <= max_zoom) {
 400                         this.zoom = zoom;
 401                         if (base_location_set)
 402                                 initMaps(lat, lon);
 403                         redraw();
 404                         set_zoom_label();
 405                 }
 406         }
 407
 408         public int get_zoom() {
 409                 return zoom;
 410         }
 411
 412         public void draw(MapPoint last_point, MapPoint point) {
 413                 boolean force_ensure = false;
 414                 if (last_point == null) {
 415                         force_ensure = true;
 416                         last_point = point;
 417                 }
 418
 419                 Point2D.Double pt = pt(point.lat, point.lon);
 420                 Point2D.Double last_pt = pt(last_point.lat, last_point.lon);
 421
 422                 boolean in_any = false;
 423                 for (Point offset : mapTiles.keySet()) {
 424                         AltosSiteMapTile tile = mapTiles.get(offset);
 425                         Point2D.Double ref, lref;
 426                         ref = translatePoint(pt, tileCoordOffset(offset));
 427                         lref = translatePoint(last_pt, tileCoordOffset(offset));
 428                         tile.show(point.state, lref, ref);
 429                         if (0 <= ref.x && ref.x < px_size)
 430                                 if (0 <= ref.y && ref.y < px_size)
 431                                         in_any = true;
 432                 }
 433
 434                 Point offset = tileOffset(pt);
 435                 if (!in_any) {
 436                         Point2D.Double ref, lref;
 437                         ref = translatePoint(pt, tileCoordOffset(offset));
 438                         lref = translatePoint(last_pt, tileCoordOffset(offset));
 439
 440                         AltosSiteMapTile tile = createTile(offset);
 441                         tile.show(point.state, lref, ref);
 442                         initAndFinishMapAsync(tile, offset);
 443                 }
 444
 445                 scrollRocketToVisible(pt);
 446
 447                 if (force_ensure || offset != tileOffset(last_pt)) {
 448                         ensureTilesAround(offset);
 449                 }
 450         }
 451
 452         public void redraw() {
 453                 MapPoint        last_point = null;
 454
 455                 for (MapPoint point : points) {
 456                         draw(last_point, point);
 457                         last_point = point;
 458                 }
 459                 if (circle_set)
 460                         draw_circle(circle_lat, circle_lon);
 461                 if (line_start != null)
 462                         set_line();
 463         }
 464
 465         public void show(final AltosState state, final AltosListenerState listener_state) {
 466                 // if insufficient gps data, nothing to update
 467                 AltosGPS        gps = state.gps;
 468
 469                 if (gps == null)
 470                         return;
 471
 472                 if (!gps.locked && gps.nsat < 4)
 473                         return;
 474
 475                 if (!initialised) {
 476                         if (state.pad_lat != AltosLib.MISSING && state.pad_lon != AltosLib.MISSING) {
 477                                 initMaps(state.pad_lat, state.pad_lon);
 478                                 initialised = true;
 479                         } else if (gps.lat != AltosLib.MISSING && gps.lon != AltosLib.MISSING) {
 480                                 initMaps(gps.lat, gps.lon);
 481                                 initialised = true;
 482                         } else {
 483                                 return;
 484                         }
 485                 }
 486
 487                 MapPoint        point = new MapPoint(gps.lat, gps.lon, state.state);
 488
 489                 if (point.equals(last_point))
 490                         return;
 491
 492                 points.add(point);
 493
 494                 draw(last_point, point);
 495
 496                 last_point = point;
 497         }
 498
 499         public void centre(Point2D.Double pt) {
 500                 Rectangle r = comp.getVisibleRect();
 501                 Point2D.Double copt = translatePoint(pt, tileCoordOffset(topleft));
 502                 int dx = (int)copt.x - r.width/2 - r.x;
 503                 int dy = (int)copt.y - r.height/2 - r.y;
 504                 r.x += dx;
 505                 r.y += dy;
 506                 r.width = 1;
 507                 r.height = 1;
 508                 comp.scrollRectToVisible(r);
 509         }
 510
 511         public void centre(AltosState state) {
 512                 if (!state.gps.locked && state.gps.nsat < 4)
 513                         return;
 514                 centre(pt(state.gps.lat, state.gps.lon));
 515         }
 516
 517         private double circle_lat, circle_lon;
 518         private boolean circle_set = false;
 519
 520         public void draw_circle(double lat, double lon) {
 521                 circle_lat = lat;
 522                 circle_lon = lon;
 523                 circle_set = true;
 524
 525                 Point2D.Double pt = pt(lat, lon);
 526
 527                 for (Point offset : mapTiles.keySet()) {
 528                         AltosSiteMapTile tile = mapTiles.get(offset);
 529                         Point2D.Double ref = translatePoint(pt, tileCoordOffset(offset));
 530                         tile.set_boost(ref);
 531                 }
 532         }
 533
 534         private AltosSiteMapTile createTile(Point offset) {
 535                 AltosSiteMapTile tile = new AltosSiteMapTile(px_size);
 536                 tile.set_font(AltosUILib.value_font);
 537                 mapTiles.put(offset, tile);
 538                 return tile;
 539         }
 540
 541         private void ensureTilesAround(Point base_offset) {
 542                 for (int x = -radius; x <= radius; x++) {
 543                         for (int y = -radius; y <= radius; y++) {
 544                                 Point offset = new Point(base_offset.x + x, base_offset.y + y);
 545                                 if (mapTiles.containsKey(offset))
 546                                         continue;
 547                                 AltosSiteMapTile tile = createTile(offset);
 548                                 initAndFinishMapAsync(tile, offset);
 549                         }
 550                 }
 551         }
 552
 553         private Point topleft = new Point(0,0);
 554         private void scrollRocketToVisible(Point2D.Double pt) {
 555                 Rectangle r = comp.getVisibleRect();
 556                 Point2D.Double copt = translatePoint(pt, tileCoordOffset(topleft));
 557
 558                 int dx = (int)copt.x - r.width/2 - r.x;
 559                 int dy = (int)copt.y - r.height/2 - r.y;
 560                 if (Math.abs(dx) > r.width/4 || Math.abs(dy) > r.height/4) {
 561                         r.x += dx;
 562                         r.y += dy;
 563                         comp.scrollRectToVisible(r);
 564                 }
 565         }
 566
 567         private void addTileAt(AltosSiteMapTile tile, Point offset) {
 568                 if (Math.abs(offset.x) >= MAX_TILE_DELTA ||
 569                                 Math.abs(offset.y) >= MAX_TILE_DELTA)
 570                 {
 571                         System.out.printf("Rocket too far away from pad (tile %d,%d)\n",
 572                                           offset.x, offset.y);
 573                         return;
 574                 }
 575
 576                 boolean review = false;
 577                 Rectangle r = comp.getVisibleRect();
 578                 if (offset.x < topleft.x) {
 579                         r.x += (topleft.x - offset.x) * px_size;
 580                         topleft.x = offset.x;
 581                         review = true;
 582                 }
 583                 if (offset.y < topleft.y) {
 584                         r.y += (topleft.y - offset.y) * px_size;
 585                         topleft.y = offset.y;
 586                         review = true;
 587                 }
 588                 GridBagConstraints c = new GridBagConstraints();
 589                 c.anchor = GridBagConstraints.CENTER;
 590                 c.fill = GridBagConstraints.BOTH;
 591                 // put some space between the map tiles, debugging only
 592                 // c.insets = new Insets(5, 5, 5, 5);
 593
 594                 c.gridx = offset.x + MAX_TILE_DELTA;
 595                 c.gridy = offset.y + MAX_TILE_DELTA;
 596                 layout.setConstraints(tile, c);
 597
 598                 comp.add(tile);
 599 //              if (review) {
 600 //                      comp.scrollRectToVisible(r);
 601 //              }
 602         }
 603
 604         private AltosSiteMap(boolean knowWhatYouAreDoing) {
 605                 if (!knowWhatYouAreDoing) {
 606                         throw new RuntimeException("Arggh.");
 607                 }
 608         }
 609
 610         JComponent comp;
 611
 612         private GridBagLayout layout = new GridBagLayout();
 613
 614         LatLng  line_start, line_end;
 615
 616         private void set_line() {
 617                 if (line_start != null && line_end != null) {
 618                         Point2D.Double  start = pt(line_start.lat, line_start.lng);
 619                         Point2D.Double  end = pt(line_end.lat, line_end.lng);
 620                         AltosGreatCircle        g = new AltosGreatCircle(line_start.lat, line_start.lng,
 621                                                                          line_end.lat, line_end.lng);
 622
 623                         for (Point offset : mapTiles.keySet()) {
 624                                 AltosSiteMapTile tile = mapTiles.get(offset);
 625                                 Point2D.Double s, e;
 626                                 s = translatePoint(start, tileCoordOffset(offset));
 627                                 e = translatePoint(end, tileCoordOffset(offset));
 628                                 tile.set_line(new Line2D.Double(s.x, s.y, e.x, e.y), g.distance);
 629                         }
 630                 } else {
 631                         for (AltosSiteMapTile tile : mapTiles.values())
 632                                 tile.set_line(null, 0);
 633                 }
 634         }
 635
 636         static void debug_component(Component who, String where) {
 637 //              Rectangle       r = who.getBounds();
 638 //              int             x = r.x / px_size;
 639 //              int             y = r.y / px_size;
 640 //
 641 //              System.out.printf ("%3d, %3d: %s\n", x, y, where);
 642         }
 643
 644         LatLng latlng(MouseEvent e) {
 645                 if (!base_location_set)
 646                         return null;
 647
 648                 Rectangle       zerozero = mapTiles.get(new Point(0, 0)).getBounds();
 649
 650                 return latlng(-centre.x + e.getPoint().x - zerozero.x, -centre.y + e.getPoint().y - zerozero.y);
 651         }
 652
 653         /* MouseMotionListener methods */
 654         public void mouseDragged(MouseEvent e) {
 655                 if (!GrabNDrag.grab_n_drag(e)) {
 656                         LatLng  loc = latlng(e);
 657                         line_end = loc;
 658                         set_line();
 659                 }
 660         }
 661
 662         public void mouseMoved(MouseEvent e) {
 663         }
 664
 665         /* MouseListener methods */
 666         public void mouseClicked(MouseEvent e) {
 667         }
 668
 669         public void mouseEntered(MouseEvent e) {
 670         }
 671
 672         public void mouseExited(MouseEvent e) {
 673         }
 674
 675         public void mousePressed(MouseEvent e) {
 676                 if (!GrabNDrag.grab_n_drag(e)) {
 677                         LatLng  loc = latlng(e);
 678                         line_start = loc;
 679                         line_end = null;
 680                         set_line();
 681                 }
 682         }
 683
 684         public void mouseReleased(MouseEvent e) {
 685         }
 686
 687         public void set_cache_size() {
 688                 Rectangle       r = comp.getVisibleRect();
 689
 690                 int     width_tiles = (r.width + 2*px_size) / px_size;
 691                 int     height_tiles = (r.height + 2*px_size) / px_size;
 692                 int     tiles = width_tiles * height_tiles;
 693                 AltosSiteMapCache.set_cache_size(tiles);
 694         }
 695
 696         /* HierarchyBoundsListener methods */
 697         public void ancestorMoved(HierarchyEvent e) {
 698                 set_cache_size();
 699         }
 700
 701         public void ancestorResized(HierarchyEvent e) {
 702                 set_cache_size();
 703         }
 704
 705         JScrollPane     pane = new JScrollPane();
 706
 707         public AltosSiteMap(int in_radius) {
 708                 radius = in_radius;
 709
 710                 comp = new JComponent() { };
 711
 712                 comp.addMouseMotionListener(this);
 713                 comp.addMouseListener(this);
 714                 comp.addHierarchyBoundsListener(this);
 715
 716                 GrabNDrag scroller = new GrabNDrag(comp);
 717
 718                 comp.setLayout(layout);
 719
 720                 for (int x = -radius; x <= radius; x++) {
 721                         for (int y = -radius; y <= radius; y++) {
 722                                 Point offset = new Point(x, y);
 723                                 AltosSiteMapTile t = createTile(offset);
 724                                 addTileAt(t, offset);
 725                         }
 726                 }
 727                 pane.setViewportView(comp);
 728                 pane.setPreferredSize(new Dimension(500,500));
 729                 pane.setVisible(true);
 730                 pane.setEnabled(true);
 731
 732                 GridBagLayout   my_layout = new GridBagLayout();
 733
 734                 setLayout(my_layout);
 735
 736                 GridBagConstraints c = new GridBagConstraints();
 737                 c.anchor = GridBagConstraints.CENTER;
 738                 c.fill = GridBagConstraints.BOTH;
 739                 c.gridx = 0;
 740                 c.gridy = 0;
 741                 c.gridwidth = 1;
 742                 c.gridheight = 10;
 743                 c.weightx = 1;
 744                 c.weighty = 1;
 745                 add(pane, c);
 746
 747                 int     y = 0;
 748
 749                 zoom_label = new JLabel("", JLabel.CENTER);
 750                 set_zoom_label();
 751
 752                 c = new GridBagConstraints();
 753                 c.anchor = GridBagConstraints.CENTER;
 754                 c.fill = GridBagConstraints.HORIZONTAL;
 755                 c.gridx = 1;
 756                 c.gridy = y++;
 757                 c.weightx = 0;
 758                 c.weighty = 0;
 759                 add(zoom_label, c);
 760
 761                 JButton zoom_reset = new JButton("0");
 762                 zoom_reset.addActionListener(new ActionListener() {
 763                                 public void actionPerformed(ActionEvent e) {
 764                                         set_zoom(default_zoom);
 765                                 }
 766                         });
 767
 768                 c = new GridBagConstraints();
 769                 c.anchor = GridBagConstraints.CENTER;
 770                 c.fill = GridBagConstraints.HORIZONTAL;
 771                 c.gridx = 1;
 772                 c.gridy = y++;
 773                 c.weightx = 0;
 774                 c.weighty = 0;
 775                 add(zoom_reset, c);
 776
 777                 JButton zoom_in = new JButton("+");
 778                 zoom_in.addActionListener(new ActionListener() {
 779                                 public void actionPerformed(ActionEvent e) {
 780                                         set_zoom(get_zoom() + 1);
 781                                 }
 782                         });
 783
 784                 c = new GridBagConstraints();
 785                 c.anchor = GridBagConstraints.CENTER;
 786                 c.fill = GridBagConstraints.HORIZONTAL;
 787                 c.gridx = 1;
 788                 c.gridy = y++;
 789                 c.weightx = 0;
 790                 c.weighty = 0;
 791                 add(zoom_in, c);
 792
 793                 JButton zoom_out = new JButton("-");
 794                 zoom_out.addActionListener(new ActionListener() {
 795                                 public void actionPerformed(ActionEvent e) {
 796                                         set_zoom(get_zoom() - 1);
 797                                 }
 798                         });
 799                 c = new GridBagConstraints();
 800                 c.anchor = GridBagConstraints.CENTER;
 801                 c.fill = GridBagConstraints.HORIZONTAL;
 802                 c.gridx = 1;
 803                 c.gridy = y++;
 804                 c.weightx = 0;
 805                 c.weighty = 0;
 806                 add(zoom_out, c);
 807
 808                 final JComboBox<String> maptype_combo = new JComboBox<String>(maptype_labels);
 809
 810                 maptype_combo.setEditable(false);
 811                 maptype_combo.setMaximumRowCount(maptype_combo.getItemCount());
 812                 maptype_combo.addItemListener(new ItemListener() {
 813                                 public void itemStateChanged(ItemEvent e) {
 814                                         maptype = maptype_combo.getSelectedIndex();
 815                                         if (base_location_set)
 816                                                 initMaps(lat, lon);
 817                                         redraw();
 818                                 }
 819                         });
 820
 821                 c = new GridBagConstraints();
 822                 c.anchor = GridBagConstraints.CENTER;
 823                 c.fill = GridBagConstraints.HORIZONTAL;
 824                 c.gridx = 1;
 825                 c.gridy = y++;
 826                 c.weightx = 0;
 827                 c.weighty = 0;
 828                 add(maptype_combo, c);
 829         }
 830
 831         public AltosSiteMap() {
 832                 this(1);
 833         }
 834 }