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

   1 /*
   2  * Copyright (C) 2009-2012 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 <time.h>
  20 #include <config.h>
  21 #include <glib/gstdio.h>
  22 #include <gtk/gtk.h>
  23 #include <gio/gio.h>
  24 #include <math.h>
  25 #include <rsl.h>
  26
  27 #include <grits.h>
  28
  29 #include "radar.h"
  30 #include "level2.h"
  31 #include "../aweather-location.h"
  32
  33 static void aweather_bin_set_child(GtkBin *bin, GtkWidget *new)
  34 {
  35         GtkWidget *old = gtk_bin_get_child(bin);
  36         if (old)
  37                 gtk_widget_destroy(old);
  38         gtk_container_add(GTK_CONTAINER(bin), new);
  39         gtk_widget_show_all(new);
  40 }
  41
  42 static gchar *_find_nearest(time_t time, GList *files,
  43                 gsize offset)
  44 {
  45         g_debug("RadarSite: find_nearest ...");
  46         time_t  nearest_time = 0;
  47         char   *nearest_file = NULL;
  48
  49         struct tm tm = {};
  50         for (GList *cur = files; cur; cur = cur->next) {
  51                 gchar *file = cur->data;
  52                 sscanf(file+offset, "%4d%2d%2d_%2d%2d",
  53                                 &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
  54                                 &tm.tm_hour, &tm.tm_min);
  55                 tm.tm_year -= 1900;
  56                 tm.tm_mon  -= 1;
  57                 if (ABS(time - mktime(&tm)) <
  58                     ABS(time - nearest_time)) {
  59                         nearest_file = file;
  60                         nearest_time = mktime(&tm);
  61                 }
  62         }
  63
  64         g_debug("RadarSite: find_nearest = %s", nearest_file);
  65         if (nearest_file)
  66                 return g_strdup(nearest_file);
  67         else
  68                 return NULL;
  69 }
  70
  71
  72 /**************
  73  * RadarSites *
  74  **************/
  75 typedef enum {
  76         STATUS_UNLOADED,
  77         STATUS_LOADING,
  78         STATUS_LOADED,
  79 } RadarSiteStatus;
  80 struct _RadarSite {
  81         /* Information */
  82         city_t         *city;
  83         GritsMarker    *marker;      // Map marker for grits
  84
  85         /* Stuff from the parents */
  86         GritsViewer    *viewer;
  87         GritsHttp      *http;
  88         GritsPrefs     *prefs;
  89         GtkWidget      *pconfig;
  90
  91         /* When loaded */
  92         gboolean        hidden;
  93         RadarSiteStatus status;      // Loading status for the site
  94         GtkWidget      *config;
  95         AWeatherLevel2 *level2;      // The Level2 structure for the current volume
  96
  97         /* Internal data */
  98         time_t          time;        // Current timestamp of the level2
  99         gchar          *message;     // Error message set while updating
 100         guint           time_id;     // "time-changed"     callback ID
 101         guint           refresh_id;  // "refresh"          callback ID
 102         guint           location_id; // "locaiton-changed" callback ID
 103         guint           idle_source; // _site_update_end idle source
 104 };
 105
 106 /* format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323 */
 107 void _site_update_loading(gchar *file, goffset cur,
 108                 goffset total, gpointer _site)
 109 {
 110         RadarSite *site = _site;
 111         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(site->config));
 112         double percent = (double)cur/total;
 113         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 114         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 115                         percent*100, (double)cur/1000000, (double)total/1000000);
 116         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 117         g_free(msg);
 118 }
 119 gboolean _site_update_end(gpointer _site)
 120 {
 121         RadarSite *site = _site;
 122         if (site->message) {
 123                 g_warning("RadarSite: update_end - %s", site->message);
 124                 const char *fmt = "http://forecast.weather.gov/product.php?site=NWS&product=FTM&format=TXT&issuedby=%s";
 125                 char       *uri = g_strdup_printf(fmt, site->city->code+1);
 126                 GtkWidget  *box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
 127                 GtkWidget  *msg = gtk_label_new(site->message);
 128                 GtkWidget  *btn = gtk_link_button_new_with_label(uri, "View Radar Status");
 129                 gtk_box_set_homogeneous(GTK_BOX(box), TRUE);
 130                 gtk_box_pack_start(GTK_BOX(box), msg, TRUE, TRUE, 0);
 131                 gtk_box_pack_start(GTK_BOX(box), btn, TRUE, TRUE, 0);
 132                 aweather_bin_set_child(GTK_BIN(site->config), box);
 133                 g_free(uri);
 134         } else {
 135                 aweather_bin_set_child(GTK_BIN(site->config),
 136                                 aweather_level2_get_config(site->level2));
 137         }
 138         site->status = STATUS_LOADED;
 139         site->idle_source = 0;
 140         return FALSE;
 141 }
 142 gpointer _site_update_thread(gpointer _site)
 143 {
 144         RadarSite *site = _site;
 145         g_debug("RadarSite: update_thread - %s", site->city->code);
 146         site->message = NULL;
 147
 148         gboolean offline = grits_viewer_get_offline(site->viewer);
 149         gchar *nexrad_url = grits_prefs_get_string(site->prefs,
 150                         "aweather/nexrad_url", NULL);
 151
 152         /* Find nearest volume (temporally) */
 153         g_debug("RadarSite: update_thread - find nearest - %s", site->city->code);
 154         gchar *dir_list = g_strconcat(nexrad_url, "/", site->city->code,
 155                         "/", "dir.list", NULL);
 156         GList *files = grits_http_available(site->http,
 157                         "^\\w{4}_\\d{8}_\\d{4}$", site->city->code,
 158                         "\\d+ (.*)", (offline ? NULL : dir_list));
 159         g_free(dir_list);
 160         gchar *nearest = _find_nearest(site->time, files, 5);
 161         g_list_foreach(files, (GFunc)g_free, NULL);
 162         g_list_free(files);
 163         if (!nearest) {
 164                 site->message = "No suitable files found";
 165                 goto out;
 166         }
 167
 168         /* Fetch new volume */
 169         g_debug("RadarSite: update_thread - fetch");
 170         gchar *local = g_strconcat(site->city->code, "/", nearest, NULL);
 171         gchar *uri   = g_strconcat(nexrad_url, "/", local,   NULL);
 172         gchar *file  = grits_http_fetch(site->http, uri, local,
 173                         offline ? GRITS_LOCAL : GRITS_UPDATE,
 174                         _site_update_loading, site);
 175         g_free(nexrad_url);
 176         g_free(nearest);
 177         g_free(local);
 178         g_free(uri);
 179         if (!file) {
 180                 site->message = "Fetch failed";
 181                 goto out;
 182         }
 183
 184         /* Load and add new volume */
 185         g_debug("RadarSite: update_thread - load - %s", site->city->code);
 186         site->level2 = aweather_level2_new_from_file(
 187                         file, site->city->code, colormaps);
 188         g_free(file);
 189         if (!site->level2) {
 190                 site->message = "Load failed";
 191                 goto out;
 192         }
 193         grits_object_hide(GRITS_OBJECT(site->level2), site->hidden);
 194         grits_viewer_add(site->viewer, GRITS_OBJECT(site->level2),
 195                         GRITS_LEVEL_WORLD+3, TRUE);
 196
 197 out:
 198         if (!site->idle_source)
 199                 site->idle_source = g_idle_add(_site_update_end, site);
 200         return NULL;
 201 }
 202 void _site_update(RadarSite *site)
 203 {
 204         if (site->status == STATUS_LOADING)
 205                 return;
 206         site->status = STATUS_LOADING;
 207
 208         site->time = grits_viewer_get_time(site->viewer);
 209         g_debug("RadarSite: update %s - %d",
 210                         site->city->code, (gint)site->time);
 211
 212         /* Add a progress bar */
 213         GtkWidget *progress = gtk_progress_bar_new();
 214         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 215         aweather_bin_set_child(GTK_BIN(site->config), progress);
 216
 217         /* Remove old volume */
 218         g_debug("RadarSite: update - remove - %s", site->city->code);
 219         if (site->level2) {
 220                 grits_viewer_remove(site->viewer, GRITS_OBJECT(site->level2));
 221                 site->level2 = NULL;
 222         }
 223
 224         /* Fork loading right away so updating the
 225          * list of times doesn't take too long */
 226         g_thread_new("site-update-thread", _site_update_thread, site);
 227 }
 228
 229 /* RadarSite methods */
 230 void radar_site_unload(RadarSite *site)
 231 {
 232         if (site->status != STATUS_LOADED)
 233                 return; // Abort if it's still loading
 234
 235         g_debug("RadarSite: unload %s", site->city->code);
 236
 237         if (site->time_id)
 238                 g_signal_handler_disconnect(site->viewer, site->time_id);
 239         if (site->refresh_id)
 240                 g_signal_handler_disconnect(site->viewer, site->refresh_id);
 241         if (site->idle_source)
 242                 g_source_remove(site->idle_source);
 243         site->idle_source = 0;
 244
 245         /* Remove tab */
 246         if (site->config)
 247                 gtk_widget_destroy(site->config);
 248
 249         /* Remove radar */
 250         if (site->level2) {
 251                 grits_viewer_remove(site->viewer, GRITS_OBJECT(site->level2));
 252                 site->level2 = NULL;
 253         }
 254
 255         site->status = STATUS_UNLOADED;
 256 }
 257
 258 void radar_site_load(RadarSite *site)
 259 {
 260         g_debug("RadarSite: load %s", site->city->code);
 261
 262         /* Add tab page */
 263         site->config = gtk_alignment_new(0, 0, 1, 1);
 264         g_object_set_data(G_OBJECT(site->config), "site", site);
 265         gtk_notebook_append_page(GTK_NOTEBOOK(site->pconfig), site->config,
 266                         gtk_label_new(site->city->name));
 267         gtk_widget_show_all(site->config);
 268         if (gtk_notebook_get_current_page(GTK_NOTEBOOK(site->pconfig)) == 0)
 269                 gtk_notebook_set_current_page(GTK_NOTEBOOK(site->pconfig), -1);
 270
 271         /* Set up radar loading */
 272         site->time_id = g_signal_connect_swapped(site->viewer, "time-changed",
 273                         G_CALLBACK(_site_update), site);
 274         site->refresh_id = g_signal_connect_swapped(site->viewer, "refresh",
 275                         G_CALLBACK(_site_update), site);
 276         _site_update(site);
 277 }
 278
 279 void _site_on_location_changed(GritsViewer *viewer,
 280                 gdouble lat, gdouble lon, gdouble elev,
 281                 gpointer _site)
 282 {
 283         static gdouble min_dist = EARTH_R / 30;
 284         RadarSite *site = _site;
 285
 286         /* Calculate distance, could cache xyz values */
 287         gdouble eye_xyz[3], site_xyz[3];
 288         lle2xyz(lat, lon, elev, &eye_xyz[0], &eye_xyz[1], &eye_xyz[2]);
 289         lle2xyz(site->city->pos.lat, site->city->pos.lon, site->city->pos.elev,
 290                         &site_xyz[0], &site_xyz[1], &site_xyz[2]);
 291         gdouble dist = distd(site_xyz, eye_xyz);
 292
 293         /* Load or unload the site if necessasairy */
 294         if (dist <= min_dist && dist < elev*1.25 && site->status == STATUS_UNLOADED)
 295                 radar_site_load(site);
 296         else if (dist > 2*min_dist &&  site->status != STATUS_UNLOADED)
 297                 radar_site_unload(site);
 298 }
 299
 300 RadarSite *radar_site_new(city_t *city, GtkWidget *pconfig,
 301                 GritsViewer *viewer, GritsPrefs *prefs, GritsHttp *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->http    = grits_http_new(G_DIR_SEPARATOR_S
 308                         "nexrad" G_DIR_SEPARATOR_S
 309                         "level2" G_DIR_SEPARATOR_S);
 310         site->city    = city;
 311         site->pconfig = pconfig;
 312         site->hidden  = TRUE;
 313
 314         /* Set initial location */
 315         gdouble lat, lon, elev;
 316         grits_viewer_get_location(viewer, &lat, &lon, &elev);
 317         _site_on_location_changed(viewer, lat, lon, elev, site);
 318
 319         /* Add marker */
 320         site->marker = grits_marker_new(site->city->name);
 321         GRITS_OBJECT(site->marker)->center = site->city->pos;
 322         GRITS_OBJECT(site->marker)->lod    = EARTH_R*0.75*site->city->lod;
 323         grits_viewer_add(site->viewer, GRITS_OBJECT(site->marker),
 324                         GRITS_LEVEL_HUD, FALSE);
 325
 326         /* Connect signals */
 327         site->location_id  = g_signal_connect(viewer, "location-changed",
 328                         G_CALLBACK(_site_on_location_changed), site);
 329         return site;
 330 }
 331
 332 void radar_site_free(RadarSite *site)
 333 {
 334         radar_site_unload(site);
 335         grits_viewer_remove(site->viewer, GRITS_OBJECT(site->marker));
 336         if (site->location_id)
 337                 g_signal_handler_disconnect(site->viewer, site->location_id);
 338         grits_http_free(site->http);
 339         g_object_unref(site->viewer);
 340         g_object_unref(site->prefs);
 341         g_free(site);
 342 }
 343
 344
 345 /**************
 346  * RadarConus *
 347  **************/
 348 #define CONUS_NORTH       50.406626367301044
 349 #define CONUS_WEST       -127.620375523875420
 350 #define CONUS_WIDTH       3400.0
 351 #define CONUS_HEIGHT      1600.0
 352 #define CONUS_DEG_PER_PX  0.017971305190311
 353
 354 struct _RadarConus {
 355         GritsViewer *viewer;
 356         GritsHttp   *http;
 357         GtkWidget   *config;
 358         time_t       time;
 359         const gchar *message;
 360         GMutex       loading;
 361
 362         gchar       *path;
 363         GritsTile   *tile[2];
 364
 365         guint        time_id;     // "time-changed"     callback ID
 366         guint        refresh_id;  // "refresh"          callback ID
 367         guint        idle_source; // _conus_update_end idle source
 368 };
 369
 370 void _conus_update_loading(gchar *file, goffset cur,
 371                 goffset total, gpointer _conus)
 372 {
 373         RadarConus *conus = _conus;
 374         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(conus->config));
 375         double percent = (double)cur/total;
 376         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 377         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 378                         percent*100, (double)cur/1000000, (double)total/1000000);
 379         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 380         g_free(msg);
 381 }
 382
 383 /* Copy images to graphics memory */
 384 static void _conus_update_end_copy(GritsTile *tile, guchar *pixels)
 385 {
 386         if (!tile->tex)
 387                 glGenTextures(1, &tile->tex);
 388
 389         gchar *clear = g_malloc0(2048*2048*4);
 390         glBindTexture(GL_TEXTURE_2D, tile->tex);
 391
 392         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 393         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 394         glTexImage2D(GL_TEXTURE_2D, 0, 4, 2048, 2048, 0,
 395                         GL_RGBA, GL_UNSIGNED_BYTE, clear);
 396         glTexSubImage2D(GL_TEXTURE_2D, 0, 1,1, CONUS_WIDTH/2,CONUS_HEIGHT,
 397                         GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 398         tile->coords.n = 1.0/(CONUS_WIDTH/2);
 399         tile->coords.w = 1.0/ CONUS_HEIGHT;
 400         tile->coords.s = tile->coords.n +  CONUS_HEIGHT   / 2048.0;
 401         tile->coords.e = tile->coords.w + (CONUS_WIDTH/2) / 2048.0;
 402         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 403         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 404         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 405         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 406         glFlush();
 407         g_free(clear);
 408 }
 409
 410 /* Split the pixbuf into east and west halves (with 2K sides)
 411  * Also map the pixbuf's alpha values */
 412 static void _conus_update_end_split(guchar *pixels, guchar *west, guchar *east,
 413                 gint width, gint height, gint pxsize)
 414 {
 415         g_debug("Conus: update_end_split");
 416         guchar *out[] = {west,east};
 417         const guchar alphamap[][4] = {
 418                 {0x04, 0xe9, 0xe7, 0x30},
 419                 {0x01, 0x9f, 0xf4, 0x60},
 420                 {0x03, 0x00, 0xf4, 0x90},
 421         };
 422         for (int y = 0; y < height; y++)
 423         for (int x = 0; x < width;  x++) {
 424                 gint subx = x % (width/2);
 425                 gint idx  = x / (width/2);
 426                 guchar *src = &pixels[(y*width+x)*pxsize];
 427                 guchar *dst = &out[idx][(y*(width/2)+subx)*4];
 428                 if (src[0] > 0xe0 &&
 429                     src[1] > 0xe0 &&
 430                     src[2] > 0xe0) {
 431                         dst[3] = 0x00;
 432                 } else {
 433                         dst[0] = src[0];
 434                         dst[1] = src[1];
 435                         dst[2] = src[2];
 436                         dst[3] = 0xff * 0.75;
 437                         for (int j = 0; j < G_N_ELEMENTS(alphamap); j++)
 438                                 if (src[0] == alphamap[j][0] &&
 439                                     src[1] == alphamap[j][1] &&
 440                                     src[2] == alphamap[j][2])
 441                                         dst[3] = alphamap[j][3];
 442                 }
 443         }
 444 }
 445
 446 gboolean _conus_update_end(gpointer _conus)
 447 {
 448         RadarConus *conus = _conus;
 449         g_debug("Conus: update_end");
 450
 451         /* Check error status */
 452         if (conus->message) {
 453                 g_warning("Conus: update_end - %s", conus->message);
 454                 aweather_bin_set_child(GTK_BIN(conus->config), gtk_label_new(conus->message));
 455                 goto out;
 456         }
 457
 458         /* Load and pixbuf */
 459         GError *error = NULL;
 460         GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(conus->path, &error);
 461         if (!pixbuf || error) {
 462                 g_warning("Conus: update_end - error loading pixbuf: %s", conus->path);
 463                 aweather_bin_set_child(GTK_BIN(conus->config), gtk_label_new("Error loading pixbuf"));
 464                 g_remove(conus->path);
 465                 goto out;
 466         }
 467
 468         /* Split pixels into east/west parts */
 469         guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
 470         gint    width  = gdk_pixbuf_get_width(pixbuf);
 471         gint    height = gdk_pixbuf_get_height(pixbuf);
 472         gint    pxsize = gdk_pixbuf_get_has_alpha(pixbuf) ? 4 : 3;
 473         guchar *pixels_west = g_malloc(4*(width/2)*height);
 474         guchar *pixels_east = g_malloc(4*(width/2)*height);
 475         _conus_update_end_split(pixels, pixels_west, pixels_east,
 476                         width, height, pxsize);
 477         g_object_unref(pixbuf);
 478
 479         /* Copy pixels to graphics memory */
 480         _conus_update_end_copy(conus->tile[0], pixels_west);
 481         _conus_update_end_copy(conus->tile[1], pixels_east);
 482         g_free(pixels_west);
 483         g_free(pixels_east);
 484
 485         /* Update GUI */
 486         gchar *label = g_path_get_basename(conus->path);
 487         aweather_bin_set_child(GTK_BIN(conus->config), gtk_label_new(label));
 488         grits_viewer_queue_draw(conus->viewer);
 489         g_free(label);
 490
 491 out:
 492         conus->idle_source = 0;
 493         g_free(conus->path);
 494         g_mutex_unlock(&conus->loading);
 495         return FALSE;
 496 }
 497
 498 gpointer _conus_update_thread(gpointer _conus)
 499 {
 500         RadarConus *conus = _conus;
 501         conus->message = NULL;
 502
 503         /* Find nearest */
 504         g_debug("Conus: update_thread - nearest");
 505         gboolean offline = grits_viewer_get_offline(conus->viewer);
 506         gchar *conus_url = "http://radar.weather.gov/Conus/RadarImg/";
 507         gchar *nearest;
 508         if (time(NULL) - conus->time < 60*60*5 && !offline) {
 509                 /* radar.weather.gov is full of lies.
 510                  * the index pages get cached and out of date */
 511                 /* gmtime is not thread safe, but it's not used very often so
 512                  * hopefully it'll be alright for now... :-( */
 513                 struct tm *tm = gmtime(&conus->time);
 514                 time_t onthe8 = conus->time - 60*((tm->tm_min+1)%10+1);
 515                 tm = gmtime(&onthe8);
 516                 nearest = g_strdup_printf("Conus_%04d%02d%02d_%02d%02d_N0Ronly.gif",
 517                                 tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
 518                                 tm->tm_hour, tm->tm_min);
 519         } else {
 520                 GList *files = grits_http_available(conus->http,
 521                                 "^Conus_[^\"]*_N0Ronly.gif$", "", NULL, NULL);
 522                 nearest = _find_nearest(conus->time, files, 6);
 523                 g_list_foreach(files, (GFunc)g_free, NULL);
 524                 g_list_free(files);
 525                 if (!nearest) {
 526                         conus->message = "No suitable files";
 527                         goto out;
 528                 }
 529         }
 530
 531         /* Fetch the image */
 532         g_debug("Conus: update_thread - fetch");
 533         gchar *uri  = g_strconcat(conus_url, nearest, NULL);
 534         conus->path = grits_http_fetch(conus->http, uri, nearest,
 535                         offline ? GRITS_LOCAL : GRITS_ONCE,
 536                         _conus_update_loading, conus);
 537         g_free(nearest);
 538         g_free(uri);
 539         if (!conus->path) {
 540                 conus->message = "Fetch failed";
 541                 goto out;
 542         }
 543
 544 out:
 545         g_debug("Conus: update_thread - done");
 546         if (!conus->idle_source)
 547                 conus->idle_source = g_idle_add(_conus_update_end, conus);
 548         return NULL;
 549 }
 550
 551 void _conus_update(RadarConus *conus)
 552 {
 553         if (!g_mutex_trylock(&conus->loading))
 554                 return;
 555         conus->time = grits_viewer_get_time(conus->viewer);
 556         g_debug("Conus: update - %d",
 557                         (gint)conus->time);
 558
 559         /* Add a progress bar */
 560         GtkWidget *progress = gtk_progress_bar_new();
 561         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 562         aweather_bin_set_child(GTK_BIN(conus->config), progress);
 563
 564         g_thread_new("conus-update-thread", _conus_update_thread, conus);
 565 }
 566
 567 RadarConus *radar_conus_new(GtkWidget *pconfig,
 568                 GritsViewer *viewer, GritsHttp *http)
 569 {
 570         RadarConus *conus = g_new0(RadarConus, 1);
 571         conus->viewer  = g_object_ref(viewer);
 572         conus->http    = http;
 573         conus->config  = gtk_alignment_new(0, 0, 1, 1);
 574         g_mutex_init(&conus->loading);
 575
 576         gdouble south =  CONUS_NORTH - CONUS_DEG_PER_PX*CONUS_HEIGHT;
 577         gdouble east  =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH;
 578         gdouble mid   =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH/2;
 579         conus->tile[0] = grits_tile_new(NULL, CONUS_NORTH, south, mid, CONUS_WEST);
 580         conus->tile[1] = grits_tile_new(NULL, CONUS_NORTH, south, east, mid);
 581         conus->tile[0]->zindex = 2;
 582         conus->tile[1]->zindex = 1;
 583         grits_viewer_add(viewer, GRITS_OBJECT(conus->tile[0]), GRITS_LEVEL_WORLD+2, FALSE);
 584         grits_viewer_add(viewer, GRITS_OBJECT(conus->tile[1]), GRITS_LEVEL_WORLD+2, FALSE);
 585
 586         conus->time_id = g_signal_connect_swapped(viewer, "time-changed",
 587                         G_CALLBACK(_conus_update), conus);
 588         conus->refresh_id = g_signal_connect_swapped(viewer, "refresh",
 589                         G_CALLBACK(_conus_update), conus);
 590
 591         g_object_set_data(G_OBJECT(conus->config), "conus", conus);
 592         gtk_notebook_append_page(GTK_NOTEBOOK(pconfig), conus->config,
 593                         gtk_label_new("Conus"));
 594
 595         _conus_update(conus);
 596         return conus;
 597 }
 598
 599 void radar_conus_free(RadarConus *conus)
 600 {
 601         g_signal_handler_disconnect(conus->viewer, conus->time_id);
 602         g_signal_handler_disconnect(conus->viewer, conus->refresh_id);
 603         if (conus->idle_source)
 604                 g_source_remove(conus->idle_source);
 605
 606         for (int i = 0; i < 2; i++) {
 607                 GritsTile *tile = conus->tile[i];
 608                 grits_viewer_remove(conus->viewer, GRITS_OBJECT(tile));
 609                 g_object_unref(tile);
 610         }
 611
 612         g_object_unref(conus->viewer);
 613         g_free(conus);
 614 }
 615
 616
 617 /********************
 618  * GritsPluginRadar *
 619  ********************/
 620 static void _draw_hud(GritsCallback *callback, GritsOpenGL *opengl, gpointer _self)
 621 {
 622         g_debug("GritsPluginRadar: _draw_hud");
 623         /* Setup OpenGL */
 624         glMatrixMode(GL_MODELVIEW ); glLoadIdentity();
 625         glMatrixMode(GL_PROJECTION); glLoadIdentity();
 626         glDisable(GL_TEXTURE_2D);
 627         glDisable(GL_ALPHA_TEST);
 628         glDisable(GL_CULL_FACE);
 629         glDisable(GL_LIGHTING);
 630         glEnable(GL_COLOR_MATERIAL);
 631
 632         GHashTableIter iter;
 633         gpointer name, _site;
 634         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(_self);
 635         g_hash_table_iter_init(&iter, self->sites);
 636         while (g_hash_table_iter_next(&iter, &name, &_site)) {
 637                 /* Pick correct colormaps */
 638                 RadarSite *site = _site;
 639                 if (site->hidden || !site->level2)
 640                         continue;
 641                 AWeatherColormap *colormap = site->level2->sweep_colors;
 642
 643                 /* Print the color table */
 644                 glBegin(GL_QUADS);
 645                 int len = colormap->len;
 646                 for (int i = 0; i < len; i++) {
 647                         glColor4ubv(colormap->data[i]);
 648                         glVertex3f(-1.0, (float)((i  ) - len/2)/(len/2), 0.0); // bot left
 649                         glVertex3f(-1.0, (float)((i+1) - len/2)/(len/2), 0.0); // top left
 650                         glVertex3f(-0.9, (float)((i+1) - len/2)/(len/2), 0.0); // top right
 651                         glVertex3f(-0.9, (float)((i  ) - len/2)/(len/2), 0.0); // bot right
 652                 }
 653                 glEnd();
 654         }
 655 }
 656
 657 static void _load_colormap(gchar *filename, AWeatherColormap *cm)
 658 {
 659         g_debug("GritsPluginRadar: _load_colormap - %s", filename);
 660         FILE *file = fopen(filename, "r");
 661         if (!file)
 662                 g_error("GritsPluginRadar: open failed");
 663         guint8 color[4];
 664         GArray *array = g_array_sized_new(FALSE, TRUE, sizeof(color), 256);
 665         if (!fgets(cm->name, sizeof(cm->name), file)) goto out;
 666         if (!fscanf(file, "%f\n", &cm->scale))        goto out;
 667         if (!fscanf(file, "%f\n", &cm->shift))        goto out;
 668         int r, g, b, a;
 669         while (fscanf(file, "%d %d %d %d\n", &r, &g, &b, &a) == 4) {
 670                 color[0] = r;
 671                 color[1] = g;
 672                 color[2] = b;
 673                 color[3] = a;
 674                 g_array_append_val(array, color);
 675         }
 676         cm->len  = (gint )array->len;
 677         cm->data = (void*)array->data;
 678 out:
 679         g_array_free(array, FALSE);
 680         fclose(file);
 681 }
 682
 683 static void _update_hidden(GtkNotebook *notebook,
 684                 GtkWidget *page, guint page_num, gpointer viewer)
 685 {
 686         g_debug("GritsPluginRadar: _update_hidden - 0..%d = %d",
 687                         gtk_notebook_get_n_pages(notebook), page_num);
 688
 689         for (gint i = 0; i < gtk_notebook_get_n_pages(notebook); i++) {
 690                 gboolean is_hidden = (i != page_num);
 691                 GtkWidget  *config = gtk_notebook_get_nth_page(notebook, i);
 692                 RadarConus *conus  = g_object_get_data(G_OBJECT(config), "conus");
 693                 RadarSite  *site   = g_object_get_data(G_OBJECT(config), "site");
 694
 695                 /* Conus */
 696                 if (conus) {
 697                         grits_object_hide(GRITS_OBJECT(conus->tile[0]), is_hidden);
 698                         grits_object_hide(GRITS_OBJECT(conus->tile[1]), is_hidden);
 699                 } else if (site) {
 700                         site->hidden = is_hidden;
 701                         if (site->level2)
 702                                 grits_object_hide(GRITS_OBJECT(site->level2), is_hidden);
 703                 } else {
 704                         g_warning("GritsPluginRadar: _update_hidden - no site or counus found");
 705                 }
 706         }
 707         grits_viewer_queue_draw(viewer);
 708 }
 709
 710 /* Methods */
 711 GritsPluginRadar *grits_plugin_radar_new(GritsViewer *viewer, GritsPrefs *prefs)
 712 {
 713         /* TODO: move to constructor if possible */
 714         g_debug("GritsPluginRadar: new");
 715         GritsPluginRadar *self = g_object_new(GRITS_TYPE_PLUGIN_RADAR, NULL);
 716         self->viewer = g_object_ref(viewer);
 717         self->prefs  = g_object_ref(prefs);
 718
 719         /* Setup page switching */
 720         self->tab_id = g_signal_connect(self->config, "switch-page",
 721                         G_CALLBACK(_update_hidden), viewer);
 722
 723         /* Load HUD */
 724         self->hud = grits_callback_new(_draw_hud, self);
 725         grits_viewer_add(viewer, GRITS_OBJECT(self->hud), GRITS_LEVEL_HUD, FALSE);
 726
 727         /* Load Conus */
 728         self->conus = radar_conus_new(self->config, self->viewer, self->conus_http);
 729
 730         /* Load radar sites */
 731         for (city_t *city = cities; city->type; city++) {
 732                 if (city->type != LOCATION_CITY)
 733                         continue;
 734                 RadarSite *site = radar_site_new(city, self->config,
 735                                 self->viewer, self->prefs, self->sites_http);
 736                 g_hash_table_insert(self->sites, city->code, site);
 737         }
 738
 739         return self;
 740 }
 741
 742 static GtkWidget *grits_plugin_radar_get_config(GritsPlugin *_self)
 743 {
 744         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(_self);
 745         return self->config;
 746 }
 747
 748 /* GObject code */
 749 static void grits_plugin_radar_plugin_init(GritsPluginInterface *iface);
 750 G_DEFINE_TYPE_WITH_CODE(GritsPluginRadar, grits_plugin_radar, G_TYPE_OBJECT,
 751                 G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
 752                         grits_plugin_radar_plugin_init));
 753 static void grits_plugin_radar_plugin_init(GritsPluginInterface *iface)
 754 {
 755         g_debug("GritsPluginRadar: plugin_init");
 756         /* Add methods to the interface */
 757         iface->get_config = grits_plugin_radar_get_config;
 758 }
 759 static void grits_plugin_radar_init(GritsPluginRadar *self)
 760 {
 761         g_debug("GritsPluginRadar: class_init");
 762         /* Set defaults */
 763         self->sites_http = grits_http_new(G_DIR_SEPARATOR_S
 764                         "nexrad" G_DIR_SEPARATOR_S
 765                         "level2" G_DIR_SEPARATOR_S);
 766         self->conus_http = grits_http_new(G_DIR_SEPARATOR_S
 767                         "nexrad" G_DIR_SEPARATOR_S
 768                         "conus"  G_DIR_SEPARATOR_S);
 769         self->sites      = g_hash_table_new_full(g_str_hash, g_str_equal,
 770                                 NULL, (GDestroyNotify)radar_site_free);
 771         self->config     = g_object_ref(gtk_notebook_new());
 772
 773         /* Load colormaps */
 774         for (int i = 0; colormaps[i].file; i++) {
 775                 gchar *file = g_build_filename(PKGDATADIR,
 776                                 "colors", colormaps[i].file, NULL);
 777                 _load_colormap(file, &colormaps[i]);
 778                 g_free(file);
 779         }
 780
 781         /* Need to position on the top because of Win32 bug */
 782         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(self->config), GTK_POS_LEFT);
 783 }
 784 static void grits_plugin_radar_dispose(GObject *gobject)
 785 {
 786         g_debug("GritsPluginRadar: dispose");
 787         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(gobject);
 788         if (self->viewer) {
 789                 GritsViewer *viewer = self->viewer;
 790                 self->viewer = NULL;
 791                 g_signal_handler_disconnect(self->config, self->tab_id);
 792                 grits_viewer_remove(viewer, GRITS_OBJECT(self->hud));
 793                 radar_conus_free(self->conus);
 794                 g_hash_table_destroy(self->sites);
 795                 g_object_unref(self->config);
 796                 g_object_unref(self->hud);
 797                 g_object_unref(self->prefs);
 798                 g_object_unref(viewer);
 799         }
 800         /* Drop references */
 801         G_OBJECT_CLASS(grits_plugin_radar_parent_class)->dispose(gobject);
 802 }
 803 static void grits_plugin_radar_finalize(GObject *gobject)
 804 {
 805         g_debug("GritsPluginRadar: finalize");
 806         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(gobject);
 807         /* Free data */
 808         grits_http_free(self->conus_http);
 809         grits_http_free(self->sites_http);
 810         gtk_widget_destroy(self->config);
 811         G_OBJECT_CLASS(grits_plugin_radar_parent_class)->finalize(gobject);
 812
 813 }
 814 static void grits_plugin_radar_class_init(GritsPluginRadarClass *klass)
 815 {
 816         g_debug("GritsPluginRadar: class_init");
 817         GObjectClass *gobject_class = (GObjectClass*)klass;
 818         gobject_class->dispose  = grits_plugin_radar_dispose;
 819         gobject_class->finalize = grits_plugin_radar_finalize;
 820 }