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 #include "compat.h"
  34
  35 static void aweather_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)
  46 {
  47         g_debug("RadarSite: 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                 sscanf(file+offset, "%4d%2d%2d_%2d%2d",
  55                                 &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
  56                                 &tm.tm_hour, &tm.tm_min);
  57                 tm.tm_year -= 1900;
  58                 tm.tm_mon  -= 1;
  59                 if (ABS(time - mktime(&tm)) <
  60                     ABS(time - nearest_time)) {
  61                         nearest_file = file;
  62                         nearest_time = mktime(&tm);
  63                 }
  64         }
  65
  66         g_debug("RadarSite: find_nearest = %s", nearest_file);
  67         if (nearest_file)
  68                 return g_strdup(nearest_file);
  69         else
  70                 return NULL;
  71 }
  72
  73
  74 /**************
  75  * RadarSites *
  76  **************/
  77 typedef enum {
  78         STATUS_UNLOADED,
  79         STATUS_LOADING,
  80         STATUS_LOADED,
  81 } RadarSiteStatus;
  82 struct _RadarSite {
  83         /* Information */
  84         city_t         *city;
  85         GritsMarker    *marker;      // Map marker for grits
  86
  87         /* Stuff from the parents */
  88         GritsViewer    *viewer;
  89         GritsHttp      *http;
  90         GritsPrefs     *prefs;
  91         GtkWidget      *pconfig;
  92
  93         /* When loaded */
  94         gboolean        hidden;
  95         RadarSiteStatus status;      // Loading status for the site
  96         GtkWidget      *config;
  97         AWeatherLevel2 *level2;      // The Level2 structure for the current volume
  98
  99         /* Internal data */
 100         time_t          time;        // Current timestamp of the level2
 101         gchar          *message;     // Error message set while updating
 102         guint           time_id;     // "time-changed"     callback ID
 103         guint           refresh_id;  // "refresh"          callback ID
 104         guint           location_id; // "locaiton-changed" callback ID
 105         guint           idle_source; // _site_update_end idle source
 106 };
 107
 108 /* format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323 */
 109 void _site_update_loading(gchar *file, goffset cur,
 110                 goffset total, gpointer _site)
 111 {
 112         RadarSite *site = _site;
 113         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(site->config));
 114         double percent = (double)cur/total;
 115         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 116         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 117                         percent*100, (double)cur/1000000, (double)total/1000000);
 118         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 119         g_free(msg);
 120 }
 121 gboolean _site_update_end(gpointer _site)
 122 {
 123         RadarSite *site = _site;
 124         if (site->message) {
 125                 g_warning("RadarSite: update_end - %s", site->message);
 126                 const char *fmt = "http://forecast.weather.gov/product.php?site=NWS&product=FTM&format=TXT&issuedby=%s";
 127                 char       *uri = g_strdup_printf(fmt, site->city->code+1);
 128                 GtkWidget  *box = gtk_box_new(GTK_ORIENTATION_VERTICAL, 0);
 129                 GtkWidget  *msg = gtk_label_new(site->message);
 130                 GtkWidget  *btn = gtk_link_button_new_with_label(uri, "View Radar Status");
 131                 gtk_box_set_homogeneous(GTK_BOX(box), TRUE);
 132                 gtk_box_pack_start(GTK_BOX(box), msg, TRUE, TRUE, 0);
 133                 gtk_box_pack_start(GTK_BOX(box), btn, TRUE, TRUE, 0);
 134                 aweather_bin_set_child(GTK_BIN(site->config), box);
 135                 g_free(uri);
 136         } else {
 137                 aweather_bin_set_child(GTK_BIN(site->config),
 138                                 aweather_level2_get_config(site->level2));
 139         }
 140         site->status = STATUS_LOADED;
 141         site->idle_source = 0;
 142         return FALSE;
 143 }
 144 gpointer _site_update_thread(gpointer _site)
 145 {
 146         RadarSite *site = _site;
 147         g_debug("RadarSite: update_thread - %s", site->city->code);
 148         site->message = NULL;
 149
 150         gboolean offline = grits_viewer_get_offline(site->viewer);
 151         gchar *nexrad_url = grits_prefs_get_string(site->prefs,
 152                         "aweather/nexrad_url", NULL);
 153
 154         /* Find nearest volume (temporally) */
 155         g_debug("RadarSite: update_thread - find nearest - %s", site->city->code);
 156         gchar *dir_list = g_strconcat(nexrad_url, "/", site->city->code,
 157                         "/", "dir.list", NULL);
 158         GList *files = grits_http_available(site->http,
 159                         "^\\w{4}_\\d{8}_\\d{4}$", site->city->code,
 160                         "\\d+ (.*)", (offline ? NULL : dir_list));
 161         g_free(dir_list);
 162         gchar *nearest = _find_nearest(site->time, files, 5);
 163         g_list_foreach(files, (GFunc)g_free, NULL);
 164         g_list_free(files);
 165         if (!nearest) {
 166                 site->message = "No suitable files found";
 167                 goto out;
 168         }
 169
 170         /* Fetch new volume */
 171         g_debug("RadarSite: update_thread - fetch");
 172         gchar *local = g_strconcat(site->city->code, "/", nearest, NULL);
 173         gchar *uri   = g_strconcat(nexrad_url, "/", local,   NULL);
 174         gchar *file  = grits_http_fetch(site->http, uri, local,
 175                         offline ? GRITS_LOCAL : GRITS_UPDATE,
 176                         _site_update_loading, site);
 177         g_free(nexrad_url);
 178         g_free(nearest);
 179         g_free(local);
 180         g_free(uri);
 181         if (!file) {
 182                 site->message = "Fetch failed";
 183                 goto out;
 184         }
 185
 186         /* Load and add new volume */
 187         g_debug("RadarSite: update_thread - load - %s", site->city->code);
 188         site->level2 = aweather_level2_new_from_file(
 189                         file, site->city->code, colormaps);
 190         g_free(file);
 191         if (!site->level2) {
 192                 site->message = "Load failed";
 193                 goto out;
 194         }
 195         grits_object_hide(GRITS_OBJECT(site->level2), site->hidden);
 196         grits_viewer_add(site->viewer, GRITS_OBJECT(site->level2),
 197                         GRITS_LEVEL_WORLD+3, TRUE);
 198
 199 out:
 200         if (!site->idle_source)
 201                 site->idle_source = g_idle_add(_site_update_end, site);
 202         return NULL;
 203 }
 204 void _site_update(RadarSite *site)
 205 {
 206         if (site->status == STATUS_LOADING)
 207                 return;
 208         site->status = STATUS_LOADING;
 209
 210         site->time = grits_viewer_get_time(site->viewer);
 211         g_debug("RadarSite: update %s - %d",
 212                         site->city->code, (gint)site->time);
 213
 214         /* Add a progress bar */
 215         GtkWidget *progress = gtk_progress_bar_new();
 216         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 217         aweather_bin_set_child(GTK_BIN(site->config), progress);
 218
 219         /* Remove old volume */
 220         g_debug("RadarSite: update - remove - %s", site->city->code);
 221         if (site->level2) {
 222                 grits_viewer_remove(site->viewer, GRITS_OBJECT(site->level2));
 223                 site->level2 = NULL;
 224         }
 225
 226         /* Fork loading right away so updating the
 227          * list of times doesn't take too long */
 228         g_thread_new("site-update-thread", _site_update_thread, site);
 229 }
 230
 231 /* RadarSite methods */
 232 void radar_site_unload(RadarSite *site)
 233 {
 234         if (site->status != STATUS_LOADED)
 235                 return; // Abort if it's still loading
 236
 237         g_debug("RadarSite: unload %s", site->city->code);
 238
 239         if (site->time_id)
 240                 g_signal_handler_disconnect(site->viewer, site->time_id);
 241         if (site->refresh_id)
 242                 g_signal_handler_disconnect(site->viewer, site->refresh_id);
 243         if (site->idle_source)
 244                 g_source_remove(site->idle_source);
 245         site->idle_source = 0;
 246
 247         /* Remove tab */
 248         if (site->config)
 249                 gtk_widget_destroy(site->config);
 250
 251         /* Remove radar */
 252         if (site->level2) {
 253                 grits_viewer_remove(site->viewer, GRITS_OBJECT(site->level2));
 254                 site->level2 = NULL;
 255         }
 256
 257         site->status = STATUS_UNLOADED;
 258 }
 259
 260 void radar_site_load(RadarSite *site)
 261 {
 262         g_debug("RadarSite: load %s", site->city->code);
 263
 264         /* Add tab page */
 265         site->config = gtk_alignment_new(0, 0, 1, 1);
 266         g_object_set_data(G_OBJECT(site->config), "site", site);
 267         gtk_notebook_append_page(GTK_NOTEBOOK(site->pconfig), site->config,
 268                         gtk_label_new(site->city->name));
 269         gtk_widget_show_all(site->config);
 270         if (gtk_notebook_get_current_page(GTK_NOTEBOOK(site->pconfig)) == 0)
 271                 gtk_notebook_set_current_page(GTK_NOTEBOOK(site->pconfig), -1);
 272
 273         /* Set up radar loading */
 274         site->time_id = g_signal_connect_swapped(site->viewer, "time-changed",
 275                         G_CALLBACK(_site_update), site);
 276         site->refresh_id = g_signal_connect_swapped(site->viewer, "refresh",
 277                         G_CALLBACK(_site_update), site);
 278         _site_update(site);
 279 }
 280
 281 void _site_on_location_changed(GritsViewer *viewer,
 282                 gdouble lat, gdouble lon, gdouble elev,
 283                 gpointer _site)
 284 {
 285         static gdouble min_dist = EARTH_R / 30;
 286         RadarSite *site = _site;
 287
 288         /* Calculate distance, could cache xyz values */
 289         gdouble eye_xyz[3], site_xyz[3];
 290         lle2xyz(lat, lon, elev, &eye_xyz[0], &eye_xyz[1], &eye_xyz[2]);
 291         lle2xyz(site->city->pos.lat, site->city->pos.lon, site->city->pos.elev,
 292                         &site_xyz[0], &site_xyz[1], &site_xyz[2]);
 293         gdouble dist = distd(site_xyz, eye_xyz);
 294
 295         /* Load or unload the site if necessasairy */
 296         if (dist <= min_dist && dist < elev*1.25 && site->status == STATUS_UNLOADED)
 297                 radar_site_load(site);
 298         else if (dist > 2*min_dist &&  site->status != STATUS_UNLOADED)
 299                 radar_site_unload(site);
 300 }
 301
 302 RadarSite *radar_site_new(city_t *city, GtkWidget *pconfig,
 303                 GritsViewer *viewer, GritsPrefs *prefs, GritsHttp *http)
 304 {
 305         RadarSite *site = g_new0(RadarSite, 1);
 306         site->viewer  = g_object_ref(viewer);
 307         site->prefs   = g_object_ref(prefs);
 308         //site->http    = http;
 309         site->http    = grits_http_new(G_DIR_SEPARATOR_S
 310                         "nexrad" G_DIR_SEPARATOR_S
 311                         "level2" G_DIR_SEPARATOR_S);
 312         site->city    = city;
 313         site->pconfig = pconfig;
 314         site->hidden  = TRUE;
 315
 316         /* Set initial location */
 317         gdouble lat, lon, elev;
 318         grits_viewer_get_location(viewer, &lat, &lon, &elev);
 319         _site_on_location_changed(viewer, lat, lon, elev, site);
 320
 321         /* Add marker */
 322         site->marker = grits_marker_new(site->city->name);
 323         GRITS_OBJECT(site->marker)->center = site->city->pos;
 324         GRITS_OBJECT(site->marker)->lod    = EARTH_R*0.75*site->city->lod;
 325         grits_viewer_add(site->viewer, GRITS_OBJECT(site->marker),
 326                         GRITS_LEVEL_HUD, FALSE);
 327
 328         /* Connect signals */
 329         site->location_id  = g_signal_connect(viewer, "location-changed",
 330                         G_CALLBACK(_site_on_location_changed), site);
 331         return site;
 332 }
 333
 334 void radar_site_free(RadarSite *site)
 335 {
 336         radar_site_unload(site);
 337         grits_viewer_remove(site->viewer, GRITS_OBJECT(site->marker));
 338         if (site->location_id)
 339                 g_signal_handler_disconnect(site->viewer, site->location_id);
 340         grits_http_free(site->http);
 341         g_object_unref(site->viewer);
 342         g_object_unref(site->prefs);
 343         g_free(site);
 344 }
 345
 346
 347 /**************
 348  * RadarConus *
 349  **************/
 350 #define CONUS_NORTH       50.406626367301044
 351 #define CONUS_WEST       -127.620375523875420
 352 #define CONUS_WIDTH       3400.0
 353 #define CONUS_HEIGHT      1600.0
 354 #define CONUS_DEG_PER_PX  0.017971305190311
 355
 356 struct _RadarConus {
 357         GritsViewer *viewer;
 358         GritsHttp   *http;
 359         GtkWidget   *config;
 360         time_t       time;
 361         const gchar *message;
 362         GMutex       loading;
 363
 364         gchar       *path;
 365         GritsTile   *tile[2];
 366
 367         guint        time_id;     // "time-changed"     callback ID
 368         guint        refresh_id;  // "refresh"          callback ID
 369         guint        idle_source; // _conus_update_end idle source
 370 };
 371
 372 void _conus_update_loading(gchar *file, goffset cur,
 373                 goffset total, gpointer _conus)
 374 {
 375         RadarConus *conus = _conus;
 376         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(conus->config));
 377         double percent = (double)cur/total;
 378         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 379         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 380                         percent*100, (double)cur/1000000, (double)total/1000000);
 381         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 382         g_free(msg);
 383 }
 384
 385 /* Copy images to graphics memory */
 386 static void _conus_update_end_copy(GritsTile *tile, guchar *pixels)
 387 {
 388         if (!tile->tex)
 389                 glGenTextures(1, &tile->tex);
 390
 391         gchar *clear = g_malloc0(2048*2048*4);
 392         glBindTexture(GL_TEXTURE_2D, tile->tex);
 393
 394         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 395         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 396         glTexImage2D(GL_TEXTURE_2D, 0, 4, 2048, 2048, 0,
 397                         GL_RGBA, GL_UNSIGNED_BYTE, clear);
 398         glTexSubImage2D(GL_TEXTURE_2D, 0, 1,1, CONUS_WIDTH/2,CONUS_HEIGHT,
 399                         GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 400         tile->coords.n = 1.0/(CONUS_WIDTH/2);
 401         tile->coords.w = 1.0/ CONUS_HEIGHT;
 402         tile->coords.s = tile->coords.n +  CONUS_HEIGHT   / 2048.0;
 403         tile->coords.e = tile->coords.w + (CONUS_WIDTH/2) / 2048.0;
 404         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 405         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 406         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
 407         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 408         glFlush();
 409         g_free(clear);
 410 }
 411
 412 /* Split the pixbuf into east and west halves (with 2K sides)
 413  * Also map the pixbuf's alpha values */
 414 static void _conus_update_end_split(guchar *pixels, guchar *west, guchar *east,
 415                 gint width, gint height, gint pxsize)
 416 {
 417         g_debug("Conus: update_end_split");
 418         guchar *out[] = {west,east};
 419         const guchar alphamap[][4] = {
 420                 {0x04, 0xe9, 0xe7, 0x30},
 421                 {0x01, 0x9f, 0xf4, 0x60},
 422                 {0x03, 0x00, 0xf4, 0x90},
 423         };
 424         for (int y = 0; y < height; y++)
 425         for (int x = 0; x < width;  x++) {
 426                 gint subx = x % (width/2);
 427                 gint idx  = x / (width/2);
 428                 guchar *src = &pixels[(y*width+x)*pxsize];
 429                 guchar *dst = &out[idx][(y*(width/2)+subx)*4];
 430                 if (src[0] > 0xe0 &&
 431                     src[1] > 0xe0 &&
 432                     src[2] > 0xe0) {
 433                         dst[3] = 0x00;
 434                 } else {
 435                         dst[0] = src[0];
 436                         dst[1] = src[1];
 437                         dst[2] = src[2];
 438                         dst[3] = 0xff * 0.75;
 439                         for (int j = 0; j < G_N_ELEMENTS(alphamap); j++)
 440                                 if (src[0] == alphamap[j][0] &&
 441                                     src[1] == alphamap[j][1] &&
 442                                     src[2] == alphamap[j][2])
 443                                         dst[3] = alphamap[j][3];
 444                 }
 445         }
 446 }
 447
 448 gboolean _conus_update_end(gpointer _conus)
 449 {
 450         RadarConus *conus = _conus;
 451         g_debug("Conus: update_end");
 452
 453         /* Check error status */
 454         if (conus->message) {
 455                 g_warning("Conus: update_end - %s", conus->message);
 456                 aweather_bin_set_child(GTK_BIN(conus->config), gtk_label_new(conus->message));
 457                 goto out;
 458         }
 459
 460         /* Load and pixbuf */
 461         GError *error = NULL;
 462         GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(conus->path, &error);
 463         if (!pixbuf || error) {
 464                 g_warning("Conus: update_end - error loading pixbuf: %s", conus->path);
 465                 aweather_bin_set_child(GTK_BIN(conus->config), gtk_label_new("Error loading pixbuf"));
 466                 g_remove(conus->path);
 467                 goto out;
 468         }
 469
 470         /* Split pixels into east/west parts */
 471         guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
 472         gint    width  = gdk_pixbuf_get_width(pixbuf);
 473         gint    height = gdk_pixbuf_get_height(pixbuf);
 474         gint    pxsize = gdk_pixbuf_get_has_alpha(pixbuf) ? 4 : 3;
 475         guchar *pixels_west = g_malloc(4*(width/2)*height);
 476         guchar *pixels_east = g_malloc(4*(width/2)*height);
 477         _conus_update_end_split(pixels, pixels_west, pixels_east,
 478                         width, height, pxsize);
 479         g_object_unref(pixbuf);
 480
 481         /* Copy pixels to graphics memory */
 482         _conus_update_end_copy(conus->tile[0], pixels_west);
 483         _conus_update_end_copy(conus->tile[1], pixels_east);
 484         g_free(pixels_west);
 485         g_free(pixels_east);
 486
 487         /* Update GUI */
 488         gchar *label = g_path_get_basename(conus->path);
 489         aweather_bin_set_child(GTK_BIN(conus->config), gtk_label_new(label));
 490         grits_viewer_queue_draw(conus->viewer);
 491         g_free(label);
 492
 493 out:
 494         conus->idle_source = 0;
 495         g_free(conus->path);
 496         g_mutex_unlock(&conus->loading);
 497         return FALSE;
 498 }
 499
 500 gpointer _conus_update_thread(gpointer _conus)
 501 {
 502         RadarConus *conus = _conus;
 503         conus->message = NULL;
 504
 505         /* Find nearest */
 506         g_debug("Conus: update_thread - nearest");
 507         gboolean offline = grits_viewer_get_offline(conus->viewer);
 508         gchar *conus_url = "http://radar.weather.gov/Conus/RadarImg/";
 509         gchar *nearest;
 510         if (time(NULL) - conus->time < 60*60*5 && !offline) {
 511                 /* radar.weather.gov is full of lies.
 512                  * the index pages get cached and out of date */
 513                 /* gmtime is not thread safe, but it's not used very often so
 514                  * hopefully it'll be alright for now... :-( */
 515                 struct tm *tm = gmtime(&conus->time);
 516                 time_t onthe8 = conus->time - 60*((tm->tm_min+1)%10+1);
 517                 tm = gmtime(&onthe8);
 518                 nearest = g_strdup_printf("Conus_%04d%02d%02d_%02d%02d_N0Ronly.gif",
 519                                 tm->tm_year+1900, tm->tm_mon+1, tm->tm_mday,
 520                                 tm->tm_hour, tm->tm_min);
 521         } else {
 522                 GList *files = grits_http_available(conus->http,
 523                                 "^Conus_[^\"]*_N0Ronly.gif$", "", NULL, NULL);
 524                 nearest = _find_nearest(conus->time, files, 6);
 525                 g_list_foreach(files, (GFunc)g_free, NULL);
 526                 g_list_free(files);
 527                 if (!nearest) {
 528                         conus->message = "No suitable files";
 529                         goto out;
 530                 }
 531         }
 532
 533         /* Fetch the image */
 534         g_debug("Conus: update_thread - fetch");
 535         gchar *uri  = g_strconcat(conus_url, nearest, NULL);
 536         conus->path = grits_http_fetch(conus->http, uri, nearest,
 537                         offline ? GRITS_LOCAL : GRITS_ONCE,
 538                         _conus_update_loading, conus);
 539         g_free(nearest);
 540         g_free(uri);
 541         if (!conus->path) {
 542                 conus->message = "Fetch failed";
 543                 goto out;
 544         }
 545
 546 out:
 547         g_debug("Conus: update_thread - done");
 548         if (!conus->idle_source)
 549                 conus->idle_source = g_idle_add(_conus_update_end, conus);
 550         return NULL;
 551 }
 552
 553 void _conus_update(RadarConus *conus)
 554 {
 555         if (!g_mutex_trylock(&conus->loading))
 556                 return;
 557         conus->time = grits_viewer_get_time(conus->viewer);
 558         g_debug("Conus: update - %d",
 559                         (gint)conus->time);
 560
 561         /* Add a progress bar */
 562         GtkWidget *progress = gtk_progress_bar_new();
 563         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 564         aweather_bin_set_child(GTK_BIN(conus->config), progress);
 565
 566         g_thread_new("conus-update-thread", _conus_update_thread, conus);
 567 }
 568
 569 RadarConus *radar_conus_new(GtkWidget *pconfig,
 570                 GritsViewer *viewer, GritsHttp *http)
 571 {
 572         RadarConus *conus = g_new0(RadarConus, 1);
 573         conus->viewer  = g_object_ref(viewer);
 574         conus->http    = http;
 575         conus->config  = gtk_alignment_new(0, 0, 1, 1);
 576         g_mutex_init(&conus->loading);
 577
 578         gdouble south =  CONUS_NORTH - CONUS_DEG_PER_PX*CONUS_HEIGHT;
 579         gdouble east  =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH;
 580         gdouble mid   =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH/2;
 581         conus->tile[0] = grits_tile_new(NULL, CONUS_NORTH, south, mid, CONUS_WEST);
 582         conus->tile[1] = grits_tile_new(NULL, CONUS_NORTH, south, east, mid);
 583         conus->tile[0]->zindex = 2;
 584         conus->tile[1]->zindex = 1;
 585         grits_viewer_add(viewer, GRITS_OBJECT(conus->tile[0]), GRITS_LEVEL_WORLD+2, FALSE);
 586         grits_viewer_add(viewer, GRITS_OBJECT(conus->tile[1]), GRITS_LEVEL_WORLD+2, FALSE);
 587
 588         conus->time_id = g_signal_connect_swapped(viewer, "time-changed",
 589                         G_CALLBACK(_conus_update), conus);
 590         conus->refresh_id = g_signal_connect_swapped(viewer, "refresh",
 591                         G_CALLBACK(_conus_update), conus);
 592
 593         g_object_set_data(G_OBJECT(conus->config), "conus", conus);
 594         gtk_notebook_append_page(GTK_NOTEBOOK(pconfig), conus->config,
 595                         gtk_label_new("Conus"));
 596
 597         _conus_update(conus);
 598         return conus;
 599 }
 600
 601 void radar_conus_free(RadarConus *conus)
 602 {
 603         g_signal_handler_disconnect(conus->viewer, conus->time_id);
 604         g_signal_handler_disconnect(conus->viewer, conus->refresh_id);
 605         if (conus->idle_source)
 606                 g_source_remove(conus->idle_source);
 607
 608         for (int i = 0; i < 2; i++) {
 609                 GritsTile *tile = conus->tile[i];
 610                 grits_viewer_remove(conus->viewer, GRITS_OBJECT(tile));
 611                 g_object_unref(tile);
 612         }
 613
 614         g_object_unref(conus->viewer);
 615         g_free(conus);
 616 }
 617
 618
 619 /********************
 620  * GritsPluginRadar *
 621  ********************/
 622 static void _draw_hud(GritsCallback *callback, GritsOpenGL *opengl, gpointer _self)
 623 {
 624         g_debug("GritsPluginRadar: _draw_hud");
 625         /* Setup OpenGL */
 626         glMatrixMode(GL_MODELVIEW ); glLoadIdentity();
 627         glMatrixMode(GL_PROJECTION); glLoadIdentity();
 628         glDisable(GL_TEXTURE_2D);
 629         glDisable(GL_ALPHA_TEST);
 630         glDisable(GL_CULL_FACE);
 631         glDisable(GL_LIGHTING);
 632         glEnable(GL_COLOR_MATERIAL);
 633
 634         GHashTableIter iter;
 635         gpointer name, _site;
 636         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(_self);
 637         g_hash_table_iter_init(&iter, self->sites);
 638         while (g_hash_table_iter_next(&iter, &name, &_site)) {
 639                 /* Pick correct colormaps */
 640                 RadarSite *site = _site;
 641                 if (site->hidden || !site->level2)
 642                         continue;
 643                 AWeatherColormap *colormap = site->level2->sweep_colors;
 644
 645                 /* Print the color table */
 646                 glBegin(GL_QUADS);
 647                 int len = colormap->len;
 648                 for (int i = 0; i < len; i++) {
 649                         glColor4ubv(colormap->data[i]);
 650                         glVertex3f(-1.0, (float)((i  ) - len/2)/(len/2), 0.0); // bot left
 651                         glVertex3f(-1.0, (float)((i+1) - len/2)/(len/2), 0.0); // top left
 652                         glVertex3f(-0.9, (float)((i+1) - len/2)/(len/2), 0.0); // top right
 653                         glVertex3f(-0.9, (float)((i  ) - len/2)/(len/2), 0.0); // bot right
 654                 }
 655                 glEnd();
 656         }
 657 }
 658
 659 static void _load_colormap(gchar *filename, AWeatherColormap *cm)
 660 {
 661         g_debug("GritsPluginRadar: _load_colormap - %s", filename);
 662         FILE *file = fopen(filename, "r");
 663         if (!file)
 664                 g_error("GritsPluginRadar: open failed");
 665         guint8 color[4];
 666         GArray *array = g_array_sized_new(FALSE, TRUE, sizeof(color), 256);
 667         if (!fgets(cm->name, sizeof(cm->name), file)) goto out;
 668         if (!fscanf(file, "%f\n", &cm->scale))        goto out;
 669         if (!fscanf(file, "%f\n", &cm->shift))        goto out;
 670         int r, g, b, a;
 671         while (fscanf(file, "%d %d %d %d\n", &r, &g, &b, &a) == 4) {
 672                 color[0] = r;
 673                 color[1] = g;
 674                 color[2] = b;
 675                 color[3] = a;
 676                 g_array_append_val(array, color);
 677         }
 678         cm->len  = (gint )array->len;
 679         cm->data = (void*)array->data;
 680 out:
 681         g_array_free(array, FALSE);
 682         fclose(file);
 683 }
 684
 685 static void _update_hidden(GtkNotebook *notebook,
 686                 gpointer _, guint page_num, gpointer viewer)
 687 {
 688         g_debug("GritsPluginRadar: _update_hidden - 0..%d = %d",
 689                         gtk_notebook_get_n_pages(notebook), page_num);
 690
 691         for (gint i = 0; i < gtk_notebook_get_n_pages(notebook); i++) {
 692                 gboolean is_hidden = (i != page_num);
 693                 GtkWidget  *config = gtk_notebook_get_nth_page(notebook, i);
 694                 RadarConus *conus  = g_object_get_data(G_OBJECT(config), "conus");
 695                 RadarSite  *site   = g_object_get_data(G_OBJECT(config), "site");
 696
 697                 /* Conus */
 698                 if (conus) {
 699                         grits_object_hide(GRITS_OBJECT(conus->tile[0]), is_hidden);
 700                         grits_object_hide(GRITS_OBJECT(conus->tile[1]), is_hidden);
 701                 } else if (site) {
 702                         site->hidden = is_hidden;
 703                         if (site->level2)
 704                                 grits_object_hide(GRITS_OBJECT(site->level2), is_hidden);
 705                 } else {
 706                         g_warning("GritsPluginRadar: _update_hidden - no site or counus found");
 707                 }
 708         }
 709         grits_viewer_queue_draw(viewer);
 710 }
 711
 712 /* Methods */
 713 GritsPluginRadar *grits_plugin_radar_new(GritsViewer *viewer, GritsPrefs *prefs)
 714 {
 715         /* TODO: move to constructor if possible */
 716         g_debug("GritsPluginRadar: new");
 717         GritsPluginRadar *self = g_object_new(GRITS_TYPE_PLUGIN_RADAR, NULL);
 718         self->viewer = g_object_ref(viewer);
 719         self->prefs  = g_object_ref(prefs);
 720
 721         /* Setup page switching */
 722         self->tab_id = g_signal_connect(self->config, "switch-page",
 723                         G_CALLBACK(_update_hidden), viewer);
 724
 725         /* Load HUD */
 726         self->hud = grits_callback_new(_draw_hud, self);
 727         grits_viewer_add(viewer, GRITS_OBJECT(self->hud), GRITS_LEVEL_HUD, FALSE);
 728
 729         /* Load Conus */
 730         self->conus = radar_conus_new(self->config, self->viewer, self->conus_http);
 731
 732         /* Load radar sites */
 733         for (city_t *city = cities; city->type; city++) {
 734                 if (city->type != LOCATION_CITY)
 735                         continue;
 736                 RadarSite *site = radar_site_new(city, self->config,
 737                                 self->viewer, self->prefs, self->sites_http);
 738                 g_hash_table_insert(self->sites, city->code, site);
 739         }
 740
 741         return self;
 742 }
 743
 744 static GtkWidget *grits_plugin_radar_get_config(GritsPlugin *_self)
 745 {
 746         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(_self);
 747         return self->config;
 748 }
 749
 750 /* GObject code */
 751 static void grits_plugin_radar_plugin_init(GritsPluginInterface *iface);
 752 G_DEFINE_TYPE_WITH_CODE(GritsPluginRadar, grits_plugin_radar, G_TYPE_OBJECT,
 753                 G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
 754                         grits_plugin_radar_plugin_init));
 755 static void grits_plugin_radar_plugin_init(GritsPluginInterface *iface)
 756 {
 757         g_debug("GritsPluginRadar: plugin_init");
 758         /* Add methods to the interface */
 759         iface->get_config = grits_plugin_radar_get_config;
 760 }
 761 static void grits_plugin_radar_init(GritsPluginRadar *self)
 762 {
 763         g_debug("GritsPluginRadar: class_init");
 764         /* Set defaults */
 765         self->sites_http = grits_http_new(G_DIR_SEPARATOR_S
 766                         "nexrad" G_DIR_SEPARATOR_S
 767                         "level2" G_DIR_SEPARATOR_S);
 768         self->conus_http = grits_http_new(G_DIR_SEPARATOR_S
 769                         "nexrad" G_DIR_SEPARATOR_S
 770                         "conus"  G_DIR_SEPARATOR_S);
 771         self->sites      = g_hash_table_new_full(g_str_hash, g_str_equal,
 772                                 NULL, (GDestroyNotify)radar_site_free);
 773         self->config     = g_object_ref(gtk_notebook_new());
 774
 775         /* Load colormaps */
 776         for (int i = 0; colormaps[i].file; i++) {
 777                 gchar *file = g_build_filename(PKGDATADIR,
 778                                 "colors", colormaps[i].file, NULL);
 779                 _load_colormap(file, &colormaps[i]);
 780                 g_free(file);
 781         }
 782
 783         /* Need to position on the top because of Win32 bug */
 784         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(self->config), GTK_POS_LEFT);
 785 }
 786 static void grits_plugin_radar_dispose(GObject *gobject)
 787 {
 788         g_debug("GritsPluginRadar: dispose");
 789         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(gobject);
 790         if (self->viewer) {
 791                 GritsViewer *viewer = self->viewer;
 792                 self->viewer = NULL;
 793                 g_signal_handler_disconnect(self->config, self->tab_id);
 794                 grits_viewer_remove(viewer, GRITS_OBJECT(self->hud));
 795                 radar_conus_free(self->conus);
 796                 g_hash_table_destroy(self->sites);
 797                 g_object_unref(self->config);
 798                 g_object_unref(self->hud);
 799                 g_object_unref(self->prefs);
 800                 g_object_unref(viewer);
 801         }
 802         /* Drop references */
 803         G_OBJECT_CLASS(grits_plugin_radar_parent_class)->dispose(gobject);
 804 }
 805 static void grits_plugin_radar_finalize(GObject *gobject)
 806 {
 807         g_debug("GritsPluginRadar: finalize");
 808         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(gobject);
 809         /* Free data */
 810         grits_http_free(self->conus_http);
 811         grits_http_free(self->sites_http);
 812         gtk_widget_destroy(self->config);
 813         G_OBJECT_CLASS(grits_plugin_radar_parent_class)->finalize(gobject);
 814
 815 }
 816 static void grits_plugin_radar_class_init(GritsPluginRadarClass *klass)
 817 {
 818         g_debug("GritsPluginRadar: class_init");
 819         GObjectClass *gobject_class = (GObjectClass*)klass;
 820         gobject_class->dispose  = grits_plugin_radar_dispose;
 821         gobject_class->finalize = grits_plugin_radar_finalize;
 822 }