Pileus Git - aweather/blob - src/plugins/radar.c

   1 /*
   2  * Copyright (C) 2009-2010 Andy Spencer <andy753421@gmail.com>
   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, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #define _XOPEN_SOURCE
  19 #include <sys/time.h>
  20 #include <config.h>
  21 #include <glib/gstdio.h>
  22 #include <gtk/gtk.h>
  23 #include <gtk/gtkgl.h>
  24 #include <gio/gio.h>
  25 #include <GL/gl.h>
  26 #include <math.h>
  27 #include <rsl.h>
  28
  29 #include <gis.h>
  30
  31 #include "radar.h"
  32 #include "level2.h"
  33 #include "../aweather-location.h"
  34
  35 void _gtk_bin_set_child(GtkBin *bin, GtkWidget *new)
  36 {
  37         GtkWidget *old = gtk_bin_get_child(bin);
  38         if (old)
  39                 gtk_widget_destroy(old);
  40         gtk_container_add(GTK_CONTAINER(bin), new);
  41         gtk_widget_show_all(new);
  42 }
  43
  44 static gchar *_find_nearest(time_t time, GList *files,
  45                 gsize offset, gchar *format)
  46 {
  47         g_debug("GisPluginRadar: _find_nearest ...");
  48         time_t  nearest_time = 0;
  49         char   *nearest_file = NULL;
  50
  51         struct tm tm = {};
  52         for (GList *cur = files; cur; cur = cur->next) {
  53                 gchar *file = cur->data;
  54                 strptime(file+offset, format, &tm);
  55                 if (ABS(time - mktime(&tm)) <
  56                     ABS(time - nearest_time)) {
  57                         nearest_file = file;
  58                         nearest_time = mktime(&tm);
  59                 }
  60         }
  61
  62         g_debug("GisPluginRadar: _find_nearest = %s", nearest_file);
  63         if (nearest_file)
  64                 return g_strdup(nearest_file);
  65         else
  66                 return NULL;
  67 }
  68
  69
  70 /**************
  71  * RadarSites *
  72  **************/
  73 typedef enum {
  74         STATUS_UNLOADED,
  75         STATUS_LOADING,
  76         STATUS_LOADED,
  77 } RadarSiteStatus;
  78 struct _RadarSite {
  79         /* Information */
  80         city_t    *city;
  81         GisMarker *marker;     // Map marker for libgis
  82         gpointer  *marker_ref; // Reference to maker
  83
  84         /* Stuff from the parents */
  85         GisViewer     *viewer;
  86         GisHttp       *http;
  87         GisPrefs      *prefs;
  88         GtkWidget     *pconfig;
  89
  90         /* When loaded */
  91         RadarSiteStatus status;     // Loading status for the site
  92         GtkWidget      *config;
  93         AWeatherLevel2 *level2;     // The Level2 structure for the current volume
  94         gpointer        level2_ref; // GisViewer reference to the added radar
  95
  96         /* Internal data */
  97         time_t   time;        // Current timestamp of the level2
  98         gchar   *message;     // Error message set while updating
  99         guint    time_id;     // "time-changed"     callback ID
 100         guint    refresh_id;  // "refresh"          callback ID
 101         guint    location_id; // "locaiton-changed" callback ID
 102 };
 103
 104 /* format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323 */
 105 void _site_update_loading(gchar *file, goffset cur,
 106                 goffset total, gpointer _site)
 107 {
 108         RadarSite *site = _site;
 109         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(site->config));
 110         double percent = (double)cur/total;
 111         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 112         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 113                         percent*100, (double)cur/1000000, (double)total/1000000);
 114         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 115         g_free(msg);
 116 }
 117 gboolean _site_update_end(gpointer _site)
 118 {
 119         RadarSite *site = _site;
 120         if (site->message) {
 121                 g_warning("GisPluginRadar: _update_end - %s", site->message);
 122                 _gtk_bin_set_child(GTK_BIN(site->config), gtk_label_new(site->message));
 123         } else {
 124                 _gtk_bin_set_child(GTK_BIN(site->config),
 125                                 aweather_level2_get_config(site->level2));
 126         }
 127         site->status = STATUS_LOADED;
 128         return FALSE;
 129 }
 130 gpointer _site_update_thread(gpointer _site)
 131 {
 132         RadarSite *site = _site;
 133         g_debug("GisPluginRadar: _update - %s", site->city->code);
 134         site->status = STATUS_LOADING;
 135         site->message = NULL;
 136
 137         gboolean offline = gis_viewer_get_offline(site->viewer);
 138         gchar *nexrad_url = gis_prefs_get_string(site->prefs,
 139                         "aweather/nexrad_url", NULL);
 140
 141         /* Remove old volume */
 142         g_debug("GisPluginRadar: _update - remove - %s", site->city->code);
 143         if (site->level2_ref) {
 144                 gis_viewer_remove(site->viewer, site->level2_ref);
 145                 site->level2_ref = NULL;
 146         }
 147
 148         /* Find nearest volume (temporally) */
 149         g_debug("GisPluginRadar: _update - find nearest - %s", site->city->code);
 150         gchar *dir_list = g_strconcat(nexrad_url, "/", site->city->code,
 151                         "/", "dir.list", NULL);
 152         GList *files = gis_http_available(site->http,
 153                         "^K\\w{3}_\\d{8}_\\d{4}$", site->city->code,
 154                         "\\d+ (.*)", (offline ? NULL : dir_list));
 155         g_free(dir_list);
 156         gchar *nearest = _find_nearest(site->time, files, 5, "%Y%m%d_%H%M");
 157         g_list_foreach(files, (GFunc)g_free, NULL);
 158         g_list_free(files);
 159         if (!nearest) {
 160                 site->message = "No suitable files found";
 161                 goto out;
 162         }
 163
 164         /* Fetch new volume */
 165         g_debug("GisPluginRadar: _update - fetch");
 166         gchar *local = g_strconcat(site->city->code, "/", nearest, NULL);
 167         gchar *uri   = g_strconcat(nexrad_url, "/", local,   NULL);
 168         gchar *file = gis_http_fetch(site->http, uri, local,
 169                         offline ? GIS_LOCAL : GIS_UPDATE,
 170                         _site_update_loading, site);
 171         g_free(nexrad_url);
 172         g_free(nearest);
 173         g_free(local);
 174         g_free(uri);
 175         if (!file) {
 176                 site->message = "Fetch failed";
 177                 goto out;
 178         }
 179
 180         /* Load and add new volume */
 181         g_debug("GisPluginRadar: _update - load - %s", site->city->code);
 182         site->level2 = aweather_level2_new_from_file(
 183                         site->viewer, colormaps, file, site->city->code);
 184         g_free(file);
 185         if (!site->level2) {
 186                 site->message = "Load failed";
 187                 goto out;
 188         }
 189         site->level2_ref = gis_viewer_add(site->viewer,
 190                         GIS_OBJECT(site->level2), GIS_LEVEL_WORLD, TRUE);
 191
 192 out:
 193         g_idle_add(_site_update_end, site);
 194         return NULL;
 195 }
 196 void _site_update(RadarSite *site)
 197 {
 198         site->time = gis_viewer_get_time(site->viewer);
 199         g_debug("GisPluginRadar: _on_time_changed %s - %d",
 200                         site->city->code, (gint)site->time);
 201
 202         /* Add a progress bar */
 203         GtkWidget *progress = gtk_progress_bar_new();
 204         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 205         _gtk_bin_set_child(GTK_BIN(site->config), progress);
 206
 207         /* Fork loading right away so updating the
 208          * list of times doesn't take too long */
 209         g_thread_create(_site_update_thread, site, FALSE, NULL);
 210 }
 211
 212 /* RadarSite methods */
 213 void radar_site_unload(RadarSite *site)
 214 {
 215         if (site->status != STATUS_LOADED)
 216                 return; // Abort if it's still loading
 217
 218         g_debug("GisPluginRadar: radar_site_unload %s", site->city->code);
 219
 220         if (site->time_id)
 221                 g_signal_handler_disconnect(site->viewer, site->time_id);
 222         if (site->refresh_id)
 223                 g_signal_handler_disconnect(site->viewer, site->refresh_id);
 224
 225         /* Remove tab */
 226         if (site->config)
 227                 gtk_widget_destroy(site->config);
 228
 229         /* Remove radar */
 230         if (site->level2_ref) {
 231                 gis_viewer_remove(site->viewer, site->level2_ref);
 232                 site->level2_ref = NULL;
 233         }
 234
 235         site->status = STATUS_UNLOADED;
 236 }
 237
 238 void radar_site_load(RadarSite *site)
 239 {
 240         g_debug("GisPluginRadar: radar_site_load %s", site->city->code);
 241         site->status = STATUS_LOADING;
 242
 243         /* Add tab page */
 244         site->config = gtk_alignment_new(0, 0, 1, 1);
 245         GtkWidget *tab   = gtk_hbox_new(FALSE, 0);
 246         GtkWidget *close = gtk_button_new();
 247         GtkWidget *label = gtk_label_new(site->city->name);
 248         gtk_container_add(GTK_CONTAINER(close),
 249                         gtk_image_new_from_stock(GTK_STOCK_CLOSE,
 250                                 GTK_ICON_SIZE_MENU));
 251         gtk_button_set_relief(GTK_BUTTON(close), GTK_RELIEF_NONE);
 252         g_signal_connect_swapped(close, "clicked",
 253                         G_CALLBACK(radar_site_unload), site);
 254         gtk_box_pack_start(GTK_BOX(tab), label, TRUE, TRUE, 0);
 255         gtk_box_pack_end(GTK_BOX(tab), close, FALSE, FALSE, 0);
 256         gtk_notebook_append_page(GTK_NOTEBOOK(site->pconfig),
 257                         site->config, tab);
 258         gtk_widget_show_all(site->config);
 259         gtk_widget_show_all(tab);
 260
 261         /* Set up radar loading */
 262         site->time_id = g_signal_connect_swapped(site->viewer, "time-changed",
 263                         G_CALLBACK(_site_update), site);
 264         site->refresh_id = g_signal_connect_swapped(site->viewer, "refresh",
 265                         G_CALLBACK(_site_update), site);
 266         _site_update(site);
 267 }
 268
 269 void _site_on_location_changed(GisViewer *viewer,
 270                 gdouble lat, gdouble lon, gdouble elev,
 271                 gpointer _site)
 272 {
 273         static gdouble min_dist = EARTH_R / 20;
 274         RadarSite *site = _site;
 275
 276         /* Calculate distance, could cache xyz values */
 277         gdouble eye_xyz[3], site_xyz[3];
 278         lle2xyz(lat, lon, elev, &eye_xyz[0], &eye_xyz[1], &eye_xyz[2]);
 279         lle2xyz(site->city->pos.lat, site->city->pos.lon, site->city->pos.elev,
 280                         &site_xyz[0], &site_xyz[1], &site_xyz[2]);
 281         gdouble dist = distd(site_xyz, eye_xyz);
 282
 283         /* Load or unload the site if necessasairy */
 284         if (dist <= min_dist && dist < elev*1.25 && site->status == STATUS_UNLOADED)
 285                 radar_site_load(site);
 286         else if (dist > 2*min_dist &&  site->status != STATUS_UNLOADED)
 287                 radar_site_unload(site);
 288 }
 289
 290 gboolean _site_add_marker(gpointer _site)
 291 {
 292         RadarSite *site = _site;
 293         site->marker = gis_marker_new(site->city->name);
 294         GIS_OBJECT(site->marker)->center = site->city->pos;
 295         GIS_OBJECT(site->marker)->lod    = EARTH_R*site->city->lod;
 296         site->marker_ref = gis_viewer_add(site->viewer,
 297                         GIS_OBJECT(site->marker), GIS_LEVEL_OVERLAY, FALSE);
 298         return FALSE;
 299 }
 300 RadarSite *radar_site_new(city_t *city, GtkWidget *pconfig,
 301                 GisViewer *viewer, GisPrefs *prefs, GisHttp *http)
 302 {
 303         RadarSite *site = g_new0(RadarSite, 1);
 304         site->viewer  = g_object_ref(viewer);
 305         site->prefs   = g_object_ref(prefs);
 306         site->http    = http;
 307         site->city    = city;
 308         site->pconfig = pconfig;
 309
 310         /* Add marker */
 311         g_idle_add_full(G_PRIORITY_LOW, _site_add_marker, site, NULL);
 312
 313
 314         /* Connect signals */
 315         site->location_id  = g_signal_connect(viewer, "location-changed",
 316                         G_CALLBACK(_site_on_location_changed), site);
 317         return site;
 318 }
 319
 320 void radar_site_free(RadarSite *site)
 321 {
 322         radar_site_unload(site);
 323         gis_viewer_remove(site->viewer, site->marker_ref);
 324         if (site->location_id)
 325                 g_signal_handler_disconnect(site->viewer, site->location_id);
 326         g_object_unref(site->viewer);
 327         g_object_unref(site->prefs);
 328         g_free(site);
 329 }
 330
 331
 332 /**************
 333  * RadarConus *
 334  **************/
 335 #define CONUS_NORTH       50.406626367301044
 336 #define CONUS_WEST       -127.620375523875420
 337 #define CONUS_WIDTH       3400.0
 338 #define CONUS_HEIGHT      1600.0
 339 #define CONUS_DEG_PER_PX  0.017971305190311
 340
 341 struct _RadarConus {
 342         GisViewer   *viewer;
 343         GisHttp     *http;
 344         GtkWidget   *config;
 345         time_t       time;
 346         const gchar *message;
 347
 348         gchar       *path;
 349         GisTile     *tile[2];
 350         gpointer    *tile_ref[2];
 351
 352         guint        time_id;     // "time-changed"     callback ID
 353         guint        refresh_id;  // "refresh"          callback ID
 354 };
 355
 356 void _conus_update_loading(gchar *file, goffset cur,
 357                 goffset total, gpointer _conus)
 358 {
 359         RadarConus *conus = _conus;
 360         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(conus->config));
 361         double percent = (double)cur/total;
 362         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 363         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 364                         percent*100, (double)cur/1000000, (double)total/1000000);
 365         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 366         g_free(msg);
 367 }
 368
 369 /* Copy images to graphics memory */
 370 static void _conus_update_end_copy(GisTile *tile, guchar *pixels)
 371 {
 372         if (!tile->data) {
 373                 tile->data = g_new0(guint, 1);
 374                 glGenTextures(1, tile->data);
 375         }
 376
 377         guint *tex = tile->data;
 378         glBindTexture(GL_TEXTURE_2D, *tex);
 379
 380         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 381         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 382         glTexImage2D(GL_TEXTURE_2D, 0, 4, 2048, 2048, 0,
 383                         GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 384         glTexSubImage2D(GL_TEXTURE_2D, 0, 1,1, CONUS_WIDTH/2,CONUS_HEIGHT,
 385                         GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 386         tile->coords.n = 1.0/(CONUS_WIDTH/2);
 387         tile->coords.w = 1.0/ CONUS_HEIGHT;
 388         tile->coords.s = tile->coords.n +  CONUS_HEIGHT   / 2048.0;
 389         tile->coords.e = tile->coords.w + (CONUS_WIDTH/2) / 2048.0;
 390         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 391         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 392         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
 393         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
 394         glFlush();
 395 }
 396
 397 /* Split the pixbuf into east and west halves (with 2K sides)
 398  * Also map the pixbuf's alpha values */
 399 static void _conus_update_end_split(guchar *pixels, guchar *west, guchar *east,
 400                 gint width, gint height, gint pxsize)
 401 {
 402         g_debug("GisPluginRadar: _conus_update_thread - split");
 403         guchar *out[] = {west,east};
 404         const guchar alphamap[][4] = {
 405                 {0x04, 0xe9, 0xe7, 0x30},
 406                 {0x01, 0x9f, 0xf4, 0x60},
 407                 {0x03, 0x00, 0xf4, 0x90},
 408         };
 409         for (int y = 0; y < height; y++)
 410         for (int x = 0; x < width;  x++) {
 411                 gint subx = x % (width/2);
 412                 gint idx  = x / (width/2);
 413                 guchar *src = &pixels[(y*width+x)*pxsize];
 414                 guchar *dst = &out[idx][(y*(width/2)+subx)*4];
 415                 if (src[0] > 0xe0 &&
 416                     src[1] > 0xe0 &&
 417                     src[2] > 0xe0) {
 418                         dst[3] = 0x00;
 419                 } else {
 420                         dst[0] = src[0];
 421                         dst[1] = src[1];
 422                         dst[2] = src[2];
 423                         dst[3] = 0xff;
 424                         for (int j = 0; j < G_N_ELEMENTS(alphamap); j++)
 425                                 if (src[0] == alphamap[j][0] &&
 426                                     src[1] == alphamap[j][1] &&
 427                                     src[2] == alphamap[j][2])
 428                                         dst[3] = alphamap[j][3];
 429                 }
 430         }
 431 }
 432
 433 gboolean _conus_update_end(gpointer _conus)
 434 {
 435         RadarConus *conus = _conus;
 436         g_debug("GisPluginRadar: _conus_update_end");
 437
 438         /* Check error status */
 439         if (conus->message) {
 440                 g_warning("GisPluginRadar: _conus_update_end - %s", conus->message);
 441                 _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(conus->message));
 442                 return FALSE;
 443         }
 444
 445         /* Load and pixbuf */
 446         GError *error = NULL;
 447         GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(conus->path, &error);
 448         guchar    *pixels = gdk_pixbuf_get_pixels(pixbuf);
 449         gint       width  = gdk_pixbuf_get_width(pixbuf);
 450         gint       height = gdk_pixbuf_get_height(pixbuf);
 451         gint       pxsize = gdk_pixbuf_get_has_alpha(pixbuf) ? 4 : 3;
 452
 453         /* Split pixels into east/west parts */
 454         guchar *pixels_west = g_malloc(4*(width/2)*height);
 455         guchar *pixels_east = g_malloc(4*(width/2)*height);
 456         _conus_update_end_split(pixels, pixels_west, pixels_east,
 457                         width, height, pxsize);
 458         g_object_unref(pixbuf);
 459
 460         /* Copy pixels to graphics memory */
 461         _conus_update_end_copy(conus->tile[0], pixels_west);
 462         _conus_update_end_copy(conus->tile[1], pixels_east);
 463         g_free(pixels_west);
 464         g_free(pixels_east);
 465
 466         /* Update GUI */
 467         gchar *label = g_path_get_basename(conus->path);
 468         _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(label));
 469         gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
 470         g_free(conus->path);
 471         g_free(label);
 472
 473         return FALSE;
 474 }
 475
 476 gpointer _conus_update_thread(gpointer _conus)
 477 {
 478         RadarConus *conus = _conus;
 479         conus->message = NULL;
 480
 481         /* Find nearest */
 482         g_debug("GisPluginRadar: _conus_update_thread - nearest");
 483         gboolean offline = gis_viewer_get_offline(conus->viewer);
 484         gchar *conus_url = "http://radar.weather.gov/Conus/RadarImg/";
 485         GList *files = gis_http_available(conus->http,
 486                         "^Conus_[^\"]*_N0Ronly.gif$", "",
 487                         NULL, (offline ? NULL : conus_url));
 488         gchar *nearest = _find_nearest(conus->time, files, 6, "%Y%m%d_%H%M");
 489         g_list_foreach(files, (GFunc)g_free, NULL);
 490         g_list_free(files);
 491         if (!nearest) {
 492                 conus->message = "No suitable files";
 493                 goto out;
 494         }
 495
 496         /* Fetch the image */
 497         g_debug("GisPluginRadar: _conus_update_thread - fetch");
 498         gchar *uri  = g_strconcat(conus_url, nearest, NULL);
 499         conus->path = gis_http_fetch(conus->http, uri, nearest, GIS_ONCE,
 500                         _conus_update_loading, conus);
 501         g_free(nearest);
 502         g_free(uri);
 503         if (!conus->path) {
 504                 conus->message = "Fetch failed";
 505                 goto out;
 506         }
 507
 508 out:
 509         g_debug("GisPluginRadar: _conus_update_thread - done");
 510         g_idle_add(_conus_update_end, conus);
 511         return NULL;
 512 }
 513
 514 void _conus_update(RadarConus *conus)
 515 {
 516         conus->time = gis_viewer_get_time(conus->viewer);
 517         g_debug("GisPluginRadar: _conus_update - %d",
 518                         (gint)conus->time);
 519
 520         /* Add a progress bar */
 521         GtkWidget *progress = gtk_progress_bar_new();
 522         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 523         _gtk_bin_set_child(GTK_BIN(conus->config), progress);
 524
 525         g_thread_create(_conus_update_thread, conus, FALSE, NULL);
 526 }
 527
 528 RadarConus *radar_conus_new(GtkWidget *pconfig,
 529                 GisViewer *viewer, GisHttp *http)
 530 {
 531         RadarConus *conus = g_new0(RadarConus, 1);
 532         conus->viewer  = g_object_ref(viewer);
 533         conus->http    = http;
 534         conus->config  = gtk_alignment_new(0, 0, 1, 1);
 535
 536         gdouble south =  CONUS_NORTH - CONUS_DEG_PER_PX*CONUS_HEIGHT;
 537         gdouble east  =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH;
 538         gdouble mid   =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH/2;
 539         conus->tile[0] = gis_tile_new(NULL, CONUS_NORTH, south, mid, CONUS_WEST);
 540         conus->tile[1] = gis_tile_new(NULL, CONUS_NORTH, south, east, mid);
 541         conus->tile[0]->zindex = 2;
 542         conus->tile[1]->zindex = 1;
 543         conus->tile_ref[0] = gis_viewer_add(viewer,
 544                         GIS_OBJECT(conus->tile[0]), GIS_LEVEL_WORLD, TRUE);
 545         conus->tile_ref[1] = gis_viewer_add(viewer,
 546                         GIS_OBJECT(conus->tile[1]), GIS_LEVEL_WORLD, TRUE);
 547
 548         conus->time_id = g_signal_connect_swapped(viewer, "time-changed",
 549                         G_CALLBACK(_conus_update), conus);
 550         conus->refresh_id = g_signal_connect_swapped(viewer, "refresh",
 551                         G_CALLBACK(_conus_update), conus);
 552
 553         gtk_notebook_append_page(GTK_NOTEBOOK(pconfig), conus->config, gtk_label_new("Conus"));
 554         _conus_update(conus);
 555         return conus;
 556 }
 557
 558 void radar_conus_free(RadarConus *conus)
 559 {
 560         g_signal_handler_disconnect(conus->viewer, conus->time_id);
 561         g_signal_handler_disconnect(conus->viewer, conus->refresh_id);
 562
 563         for (int i = 0; i < 2; i++) {
 564                 GisTile *tile = conus->tile[i];
 565                 gpointer ref  = conus->tile_ref[i];
 566                 if (tile->data) {
 567                         glDeleteTextures(1, tile->data);
 568                         g_free(tile->data);
 569                 }
 570                 gis_viewer_remove(conus->viewer, ref);
 571         }
 572
 573         g_object_unref(conus->viewer);
 574         g_free(conus);
 575 }
 576
 577
 578 /******************
 579  * GisPluginRadar *
 580  ******************/
 581 static void _draw_hud(GisCallback *callback, gpointer _self)
 582 {
 583         /* TODO */
 584         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 585         if (!self->colormap)
 586                 return;
 587
 588         g_debug("GisPluginRadar: _draw_hud");
 589         /* Print the color table */
 590         glMatrixMode(GL_MODELVIEW ); glLoadIdentity();
 591         glMatrixMode(GL_PROJECTION); glLoadIdentity();
 592         glDisable(GL_TEXTURE_2D);
 593         glDisable(GL_ALPHA_TEST);
 594         glDisable(GL_CULL_FACE);
 595         glDisable(GL_LIGHTING);
 596         glEnable(GL_COLOR_MATERIAL);
 597         glBegin(GL_QUADS);
 598         int i;
 599         for (i = 0; i < 256; i++) {
 600                 glColor4ubv(self->colormap->data[i]);
 601                 glVertex3f(-1.0, (float)((i  ) - 256/2)/(256/2), 0.0); // bot left
 602                 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
 603                 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
 604                 glVertex3f(-0.9, (float)((i  ) - 256/2)/(256/2), 0.0); // bot right
 605         }
 606         glEnd();
 607 }
 608
 609 /* Methods */
 610 GisPluginRadar *gis_plugin_radar_new(GisViewer *viewer, GisPrefs *prefs)
 611 {
 612         /* TODO: move to constructor if possible */
 613         g_debug("GisPluginRadar: new");
 614         GisPluginRadar *self = g_object_new(GIS_TYPE_PLUGIN_RADAR, NULL);
 615         self->viewer = viewer;
 616         self->prefs  = prefs;
 617
 618         /* Load HUD */
 619         GisCallback *hud_cb = gis_callback_new(_draw_hud, self);
 620         self->hud_ref = gis_viewer_add(viewer, GIS_OBJECT(hud_cb), GIS_LEVEL_HUD, FALSE);
 621
 622         /* Load Conus */
 623         self->conus = radar_conus_new(self->config, self->viewer, self->conus_http);
 624
 625         /* Load radar sites */
 626         for (city_t *city = cities; city->type; city++) {
 627                 if (city->type != LOCATION_CITY)
 628                         continue;
 629                 RadarSite *site = radar_site_new(city, self->config,
 630                                 self->viewer, self->prefs, self->sites_http);
 631                 g_hash_table_insert(self->sites, city->code, site);
 632         }
 633
 634         return self;
 635 }
 636
 637 static GtkWidget *gis_plugin_radar_get_config(GisPlugin *_self)
 638 {
 639         GisPluginRadar *self = GIS_PLUGIN_RADAR(_self);
 640         return self->config;
 641 }
 642
 643 /* GObject code */
 644 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface);
 645 G_DEFINE_TYPE_WITH_CODE(GisPluginRadar, gis_plugin_radar, G_TYPE_OBJECT,
 646                 G_IMPLEMENT_INTERFACE(GIS_TYPE_PLUGIN,
 647                         gis_plugin_radar_plugin_init));
 648 static void gis_plugin_radar_plugin_init(GisPluginInterface *iface)
 649 {
 650         g_debug("GisPluginRadar: plugin_init");
 651         /* Add methods to the interface */
 652         iface->get_config = gis_plugin_radar_get_config;
 653 }
 654 static void gis_plugin_radar_init(GisPluginRadar *self)
 655 {
 656         g_debug("GisPluginRadar: class_init");
 657         /* Set defaults */
 658         self->sites_http = gis_http_new(G_DIR_SEPARATOR_S "nexrad" G_DIR_SEPARATOR_S "level2" G_DIR_SEPARATOR_S);
 659         self->conus_http = gis_http_new(G_DIR_SEPARATOR_S "nexrad" G_DIR_SEPARATOR_S "conus" G_DIR_SEPARATOR_S);
 660         self->sites      = g_hash_table_new_full(g_str_hash, g_str_equal,
 661                                 NULL, (GDestroyNotify)radar_site_free);
 662         self->config     = gtk_notebook_new();
 663         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(self->config), GTK_POS_LEFT);
 664 }
 665 static void gis_plugin_radar_dispose(GObject *gobject)
 666 {
 667         g_debug("GisPluginRadar: dispose");
 668         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 669         gis_viewer_remove(self->viewer, self->hud_ref);
 670         radar_conus_free(self->conus);
 671         /* Drop references */
 672         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->dispose(gobject);
 673 }
 674 static void gis_plugin_radar_finalize(GObject *gobject)
 675 {
 676         g_debug("GisPluginRadar: finalize");
 677         GisPluginRadar *self = GIS_PLUGIN_RADAR(gobject);
 678         /* Free data */
 679         gis_http_free(self->conus_http);
 680         gis_http_free(self->sites_http);
 681         g_hash_table_destroy(self->sites);
 682         gtk_widget_destroy(self->config);
 683         G_OBJECT_CLASS(gis_plugin_radar_parent_class)->finalize(gobject);
 684
 685 }
 686 static void gis_plugin_radar_class_init(GisPluginRadarClass *klass)
 687 {
 688         g_debug("GisPluginRadar: class_init");
 689         GObjectClass *gobject_class = (GObjectClass*)klass;
 690         gobject_class->dispose  = gis_plugin_radar_dispose;
 691         gobject_class->finalize = gis_plugin_radar_finalize;
 692 }