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 <grits.h>
  30
  31 #include "radar.h"
  32 #include "level2.h"
  33 #include "../aweather-location.h"
  34
  35 GtkWidget *_gtk_check_label_new(const gchar *text, gboolean state,
  36                 GCallback on_clicked, gpointer user_data)
  37 {
  38         GtkWidget *hbox  = gtk_hbox_new(FALSE, 0);
  39         GtkWidget *check = gtk_check_button_new();
  40         GtkWidget *label = gtk_label_new(text);
  41         gtk_toggle_button_set_active(GTK_TOGGLE_BUTTON(check), state);
  42         g_signal_connect_swapped(check , "clicked",
  43                         G_CALLBACK(on_clicked), user_data);
  44         gtk_box_pack_start(GTK_BOX(hbox), label, TRUE, TRUE, 0);
  45         gtk_box_pack_end(GTK_BOX(hbox), check , FALSE, FALSE, 0);
  46         gtk_widget_show_all(hbox);
  47         return hbox;
  48 }
  49
  50 void _gtk_bin_set_child(GtkBin *bin, GtkWidget *new)
  51 {
  52         GtkWidget *old = gtk_bin_get_child(bin);
  53         if (old)
  54                 gtk_widget_destroy(old);
  55         gtk_container_add(GTK_CONTAINER(bin), new);
  56         gtk_widget_show_all(new);
  57 }
  58
  59 static gchar *_find_nearest(time_t time, GList *files,
  60                 gsize offset, gchar *format)
  61 {
  62         g_debug("RadarSite: find_nearest ...");
  63         time_t  nearest_time = 0;
  64         char   *nearest_file = NULL;
  65
  66         struct tm tm = {};
  67         for (GList *cur = files; cur; cur = cur->next) {
  68                 gchar *file = cur->data;
  69                 strptime(file+offset, format, &tm);
  70                 if (ABS(time - mktime(&tm)) <
  71                     ABS(time - nearest_time)) {
  72                         nearest_file = file;
  73                         nearest_time = mktime(&tm);
  74                 }
  75         }
  76
  77         g_debug("RadarSite: find_nearest = %s", nearest_file);
  78         if (nearest_file)
  79                 return g_strdup(nearest_file);
  80         else
  81                 return NULL;
  82 }
  83
  84
  85 /**************
  86  * RadarSites *
  87  **************/
  88 typedef enum {
  89         STATUS_UNLOADED,
  90         STATUS_LOADING,
  91         STATUS_LOADED,
  92 } RadarSiteStatus;
  93 struct _RadarSite {
  94         /* Information */
  95         city_t         *city;
  96         GritsMarker    *marker;      // Map marker for grits
  97         gpointer       *marker_ref;  // Reference to maker
  98
  99         /* Stuff from the parents */
 100         GritsViewer    *viewer;
 101         GritsHttp      *http;
 102         GritsPrefs     *prefs;
 103         GtkWidget      *pconfig;
 104
 105         /* When loaded */
 106         gboolean        hidden;
 107         RadarSiteStatus status;      // Loading status for the site
 108         GtkWidget      *config;
 109         AWeatherLevel2 *level2;      // The Level2 structure for the current volume
 110         gpointer        level2_ref;  // GritsViewer reference to the added radar
 111
 112         /* Internal data */
 113         time_t          time;        // Current timestamp of the level2
 114         gchar          *message;     // Error message set while updating
 115         guint           time_id;     // "time-changed"     callback ID
 116         guint           refresh_id;  // "refresh"          callback ID
 117         guint           location_id; // "locaiton-changed" callback ID
 118 };
 119
 120 /* format: http://mesonet.agron.iastate.edu/data/nexrd2/raw/KABR/KABR_20090510_0323 */
 121 void _site_update_loading(gchar *file, goffset cur,
 122                 goffset total, gpointer _site)
 123 {
 124         RadarSite *site = _site;
 125         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(site->config));
 126         double percent = (double)cur/total;
 127         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 128         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 129                         percent*100, (double)cur/1000000, (double)total/1000000);
 130         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 131         g_free(msg);
 132 }
 133 gboolean _site_update_end(gpointer _site)
 134 {
 135         RadarSite *site = _site;
 136         if (site->message) {
 137                 g_warning("RadarSite: update_end - %s", site->message);
 138                 _gtk_bin_set_child(GTK_BIN(site->config),
 139                                 gtk_label_new(site->message));
 140         } else {
 141                 _gtk_bin_set_child(GTK_BIN(site->config),
 142                                 aweather_level2_get_config(site->level2));
 143         }
 144         site->status = STATUS_LOADED;
 145         return FALSE;
 146 }
 147 gpointer _site_update_thread(gpointer _site)
 148 {
 149         RadarSite *site = _site;
 150         g_debug("RadarSite: update_thread - %s", site->city->code);
 151         site->message = NULL;
 152
 153         gboolean offline = grits_viewer_get_offline(site->viewer);
 154         gchar *nexrad_url = grits_prefs_get_string(site->prefs,
 155                         "aweather/nexrad_url", NULL);
 156
 157         /* Find nearest volume (temporally) */
 158         g_debug("RadarSite: update_thread - find nearest - %s", site->city->code);
 159         gchar *dir_list = g_strconcat(nexrad_url, "/", site->city->code,
 160                         "/", "dir.list", NULL);
 161         GList *files = grits_http_available(site->http,
 162                         "^K\\w{3}_\\d{8}_\\d{4}$", site->city->code,
 163                         "\\d+ (.*)", (offline ? NULL : dir_list));
 164         g_free(dir_list);
 165         gchar *nearest = _find_nearest(site->time, files, 5, "%Y%m%d_%H%M");
 166         g_list_foreach(files, (GFunc)g_free, NULL);
 167         g_list_free(files);
 168         if (!nearest) {
 169                 site->message = "No suitable files found";
 170                 goto out;
 171         }
 172
 173         /* Fetch new volume */
 174         g_debug("RadarSite: update_thread - fetch");
 175         gchar *local = g_strconcat(site->city->code, "/", nearest, NULL);
 176         gchar *uri   = g_strconcat(nexrad_url, "/", local,   NULL);
 177         gchar *file  = grits_http_fetch(site->http, uri, local,
 178                         offline ? GRITS_LOCAL : GRITS_UPDATE,
 179                         _site_update_loading, site);
 180         g_free(nexrad_url);
 181         g_free(nearest);
 182         g_free(local);
 183         g_free(uri);
 184         if (!file) {
 185                 site->message = "Fetch failed";
 186                 goto out;
 187         }
 188
 189         /* Load and add new volume */
 190         g_debug("RadarSite: update_thread - load - %s", site->city->code);
 191         site->level2 = aweather_level2_new_from_file(
 192                         file, site->city->code, colormaps);
 193         g_free(file);
 194         if (!site->level2) {
 195                 site->message = "Load failed";
 196                 goto out;
 197         }
 198         GRITS_OBJECT(site->level2)->hidden = site->hidden;
 199         site->level2_ref = grits_viewer_add(site->viewer,
 200                         GRITS_OBJECT(site->level2), GRITS_LEVEL_WORLD, TRUE);
 201
 202 out:
 203         g_idle_add(_site_update_end, site);
 204         return NULL;
 205 }
 206 void _site_update(RadarSite *site)
 207 {
 208         if (site->status == STATUS_LOADING)
 209                 return;
 210         site->status = STATUS_LOADING;
 211
 212         site->time = grits_viewer_get_time(site->viewer);
 213         g_debug("RadarSite: update %s - %d",
 214                         site->city->code, (gint)site->time);
 215
 216         /* Add a progress bar */
 217         GtkWidget *progress = gtk_progress_bar_new();
 218         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 219         _gtk_bin_set_child(GTK_BIN(site->config), progress);
 220
 221         /* Remove old volume */
 222         g_debug("RadarSite: update - remove - %s", site->city->code);
 223         if (site->level2_ref) {
 224                 grits_viewer_remove(site->viewer, site->level2_ref);
 225                 site->level2_ref = NULL;
 226         }
 227
 228         /* Fork loading right away so updating the
 229          * list of times doesn't take too long */
 230         g_thread_create(_site_update_thread, site, FALSE, NULL);
 231 }
 232
 233 /* RadarSite methods */
 234 void radar_site_unload(RadarSite *site)
 235 {
 236         if (site->status != STATUS_LOADED)
 237                 return; // Abort if it's still loading
 238
 239         g_debug("RadarSite: unload %s", site->city->code);
 240
 241         if (site->time_id)
 242                 g_signal_handler_disconnect(site->viewer, site->time_id);
 243         if (site->refresh_id)
 244                 g_signal_handler_disconnect(site->viewer, site->refresh_id);
 245
 246         /* Remove tab */
 247         if (site->config)
 248                 gtk_widget_destroy(site->config);
 249
 250         /* Remove radar */
 251         if (site->level2_ref) {
 252                 grits_viewer_remove(site->viewer, site->level2_ref);
 253                 site->level2_ref = NULL;
 254         }
 255
 256         site->status = STATUS_UNLOADED;
 257 }
 258
 259 void radar_site_toggle(RadarSite *site)
 260 {
 261         site->hidden = !site->hidden;
 262         if (site->level2) {
 263                 GRITS_OBJECT(site->level2)->hidden = site->hidden;
 264                 gtk_widget_queue_draw(GTK_WIDGET(site->viewer));
 265         }
 266 }
 267
 268 void radar_site_load(RadarSite *site)
 269 {
 270         g_debug("RadarSite: load %s", site->city->code);
 271
 272         /* Add tab page */
 273         site->config = gtk_alignment_new(0, 0, 1, 1);
 274         gtk_notebook_append_page(GTK_NOTEBOOK(site->pconfig), site->config,
 275                         _gtk_check_label_new(site->city->name, !site->hidden,
 276                                 G_CALLBACK(radar_site_toggle), site));
 277         gtk_widget_show_all(site->config);
 278
 279         /* Set up radar loading */
 280         site->time_id = g_signal_connect_swapped(site->viewer, "time-changed",
 281                         G_CALLBACK(_site_update), site);
 282         site->refresh_id = g_signal_connect_swapped(site->viewer, "refresh",
 283                         G_CALLBACK(_site_update), site);
 284         _site_update(site);
 285 }
 286
 287 void _site_on_location_changed(GritsViewer *viewer,
 288                 gdouble lat, gdouble lon, gdouble elev,
 289                 gpointer _site)
 290 {
 291         static gdouble min_dist = EARTH_R / 30;
 292         RadarSite *site = _site;
 293
 294         /* Calculate distance, could cache xyz values */
 295         gdouble eye_xyz[3], site_xyz[3];
 296         lle2xyz(lat, lon, elev, &eye_xyz[0], &eye_xyz[1], &eye_xyz[2]);
 297         lle2xyz(site->city->pos.lat, site->city->pos.lon, site->city->pos.elev,
 298                         &site_xyz[0], &site_xyz[1], &site_xyz[2]);
 299         gdouble dist = distd(site_xyz, eye_xyz);
 300
 301         /* Load or unload the site if necessasairy */
 302         if (dist <= min_dist && dist < elev*1.25 && site->status == STATUS_UNLOADED)
 303                 radar_site_load(site);
 304         else if (dist > 2*min_dist &&  site->status != STATUS_UNLOADED)
 305                 radar_site_unload(site);
 306 }
 307
 308 gboolean _site_add_marker(gpointer _site)
 309 {
 310         RadarSite *site = _site;
 311         site->marker = grits_marker_new(site->city->name);
 312         GRITS_OBJECT(site->marker)->center = site->city->pos;
 313         GRITS_OBJECT(site->marker)->lod    = EARTH_R*site->city->lod;
 314         site->marker_ref = grits_viewer_add(site->viewer,
 315                         GRITS_OBJECT(site->marker), GRITS_LEVEL_OVERLAY, FALSE);
 316         return FALSE;
 317 }
 318 RadarSite *radar_site_new(city_t *city, GtkWidget *pconfig,
 319                 GritsViewer *viewer, GritsPrefs *prefs, GritsHttp *http)
 320 {
 321         RadarSite *site = g_new0(RadarSite, 1);
 322         site->viewer  = g_object_ref(viewer);
 323         site->prefs   = g_object_ref(prefs);
 324         //site->http    = http;
 325         site->http    = grits_http_new(G_DIR_SEPARATOR_S
 326                         "nexrad" G_DIR_SEPARATOR_S
 327                         "level2" G_DIR_SEPARATOR_S);
 328         site->city    = city;
 329         site->pconfig = pconfig;
 330
 331         /* Add marker */
 332         g_idle_add_full(G_PRIORITY_LOW, _site_add_marker, site, NULL);
 333
 334
 335         /* Connect signals */
 336         site->location_id  = g_signal_connect(viewer, "location-changed",
 337                         G_CALLBACK(_site_on_location_changed), site);
 338         return site;
 339 }
 340
 341 void radar_site_free(RadarSite *site)
 342 {
 343         radar_site_unload(site);
 344         grits_viewer_remove(site->viewer, site->marker_ref);
 345         if (site->location_id)
 346                 g_signal_handler_disconnect(site->viewer, site->location_id);
 347         grits_http_free(site->http);
 348         g_object_unref(site->viewer);
 349         g_object_unref(site->prefs);
 350         g_free(site);
 351 }
 352
 353
 354 /**************
 355  * RadarConus *
 356  **************/
 357 #define CONUS_NORTH       50.406626367301044
 358 #define CONUS_WEST       -127.620375523875420
 359 #define CONUS_WIDTH       3400.0
 360 #define CONUS_HEIGHT      1600.0
 361 #define CONUS_DEG_PER_PX  0.017971305190311
 362
 363 struct _RadarConus {
 364         GritsViewer *viewer;
 365         GritsHttp   *http;
 366         GtkWidget   *config;
 367         time_t       time;
 368         const gchar *message;
 369         GStaticMutex loading;
 370
 371         gchar       *path;
 372         GritsTile   *tile[2];
 373         gpointer    *tile_ref[2];
 374
 375         guint        time_id;     // "time-changed"     callback ID
 376         guint        refresh_id;  // "refresh"          callback ID
 377 };
 378
 379 void _conus_update_loading(gchar *file, goffset cur,
 380                 goffset total, gpointer _conus)
 381 {
 382         RadarConus *conus = _conus;
 383         GtkWidget *progress_bar = gtk_bin_get_child(GTK_BIN(conus->config));
 384         double percent = (double)cur/total;
 385         gtk_progress_bar_set_fraction(GTK_PROGRESS_BAR(progress_bar), MIN(percent, 1.0));
 386         gchar *msg = g_strdup_printf("Loading... %5.1f%% (%.2f/%.2f MB)",
 387                         percent*100, (double)cur/1000000, (double)total/1000000);
 388         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress_bar), msg);
 389         g_free(msg);
 390 }
 391
 392 /* Copy images to graphics memory */
 393 static void _conus_update_end_copy(GritsTile *tile, guchar *pixels)
 394 {
 395         if (!tile->data) {
 396                 tile->data = g_new0(guint, 1);
 397                 glGenTextures(1, tile->data);
 398         }
 399
 400         guint *tex = tile->data;
 401         glBindTexture(GL_TEXTURE_2D, *tex);
 402
 403         glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 404         glPixelStorei(GL_PACK_ALIGNMENT, 1);
 405         glTexImage2D(GL_TEXTURE_2D, 0, 4, 2048, 2048, 0,
 406                         GL_RGBA, GL_UNSIGNED_BYTE, NULL);
 407         glTexSubImage2D(GL_TEXTURE_2D, 0, 1,1, CONUS_WIDTH/2,CONUS_HEIGHT,
 408                         GL_RGBA, GL_UNSIGNED_BYTE, pixels);
 409         tile->coords.n = 1.0/(CONUS_WIDTH/2);
 410         tile->coords.w = 1.0/ CONUS_HEIGHT;
 411         tile->coords.s = tile->coords.n +  CONUS_HEIGHT   / 2048.0;
 412         tile->coords.e = tile->coords.w + (CONUS_WIDTH/2) / 2048.0;
 413         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
 414         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
 415         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
 416         glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
 417         glFlush();
 418 }
 419
 420 /* Split the pixbuf into east and west halves (with 2K sides)
 421  * Also map the pixbuf's alpha values */
 422 static void _conus_update_end_split(guchar *pixels, guchar *west, guchar *east,
 423                 gint width, gint height, gint pxsize)
 424 {
 425         g_debug("Conus: update_end_split");
 426         guchar *out[] = {west,east};
 427         const guchar alphamap[][4] = {
 428                 {0x04, 0xe9, 0xe7, 0x30},
 429                 {0x01, 0x9f, 0xf4, 0x60},
 430                 {0x03, 0x00, 0xf4, 0x90},
 431         };
 432         for (int y = 0; y < height; y++)
 433         for (int x = 0; x < width;  x++) {
 434                 gint subx = x % (width/2);
 435                 gint idx  = x / (width/2);
 436                 guchar *src = &pixels[(y*width+x)*pxsize];
 437                 guchar *dst = &out[idx][(y*(width/2)+subx)*4];
 438                 if (src[0] > 0xe0 &&
 439                     src[1] > 0xe0 &&
 440                     src[2] > 0xe0) {
 441                         dst[3] = 0x00;
 442                 } else {
 443                         dst[0] = src[0];
 444                         dst[1] = src[1];
 445                         dst[2] = src[2];
 446                         dst[3] = 0xff;
 447                         for (int j = 0; j < G_N_ELEMENTS(alphamap); j++)
 448                                 if (src[0] == alphamap[j][0] &&
 449                                     src[1] == alphamap[j][1] &&
 450                                     src[2] == alphamap[j][2])
 451                                         dst[3] = alphamap[j][3];
 452                 }
 453         }
 454 }
 455
 456 gboolean _conus_update_end(gpointer _conus)
 457 {
 458         RadarConus *conus = _conus;
 459         g_debug("Conus: update_end");
 460
 461         /* Check error status */
 462         if (conus->message) {
 463                 g_warning("Conus: update_end - %s", conus->message);
 464                 _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(conus->message));
 465                 goto out;
 466         }
 467
 468         /* Load and pixbuf */
 469         GError *error = NULL;
 470         GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file(conus->path, &error);
 471         if (!pixbuf || error) {
 472                 g_warning("Conus: update_end - error loading pixbuf");
 473                 _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new("Error loading pixbuf"));
 474                 g_remove(conus->path);
 475                 goto out;
 476         }
 477
 478         /* Split pixels into east/west parts */
 479         guchar *pixels = gdk_pixbuf_get_pixels(pixbuf);
 480         gint    width  = gdk_pixbuf_get_width(pixbuf);
 481         gint    height = gdk_pixbuf_get_height(pixbuf);
 482         gint    pxsize = gdk_pixbuf_get_has_alpha(pixbuf) ? 4 : 3;
 483         guchar *pixels_west = g_malloc(4*(width/2)*height);
 484         guchar *pixels_east = g_malloc(4*(width/2)*height);
 485         _conus_update_end_split(pixels, pixels_west, pixels_east,
 486                         width, height, pxsize);
 487         g_object_unref(pixbuf);
 488
 489         /* Copy pixels to graphics memory */
 490         _conus_update_end_copy(conus->tile[0], pixels_west);
 491         _conus_update_end_copy(conus->tile[1], pixels_east);
 492         g_free(pixels_west);
 493         g_free(pixels_east);
 494
 495         /* Update GUI */
 496         gchar *label = g_path_get_basename(conus->path);
 497         _gtk_bin_set_child(GTK_BIN(conus->config), gtk_label_new(label));
 498         gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
 499         g_free(label);
 500
 501 out:
 502         g_free(conus->path);
 503         g_static_mutex_unlock(&conus->loading);
 504         return FALSE;
 505 }
 506
 507 gpointer _conus_update_thread(gpointer _conus)
 508 {
 509         RadarConus *conus = _conus;
 510         conus->message = NULL;
 511
 512         /* Find nearest */
 513         g_debug("Conus: update_thread - nearest");
 514         gboolean offline = grits_viewer_get_offline(conus->viewer);
 515         gchar *conus_url = "http://radar.weather.gov/Conus/RadarImg/";
 516         GList *files = grits_http_available(conus->http,
 517                         "^Conus_[^\"]*_N0Ronly.gif$", "",
 518                         NULL, (offline ? NULL : conus_url));
 519         gchar *nearest = _find_nearest(conus->time, files, 6, "%Y%m%d_%H%M");
 520         g_list_foreach(files, (GFunc)g_free, NULL);
 521         g_list_free(files);
 522         if (!nearest) {
 523                 conus->message = "No suitable files";
 524                 goto out;
 525         }
 526
 527         /* Fetch the image */
 528         g_debug("Conus: update_thread - fetch");
 529         gchar *uri  = g_strconcat(conus_url, nearest, NULL);
 530         conus->path = grits_http_fetch(conus->http, uri, nearest, GRITS_ONCE,
 531                         _conus_update_loading, conus);
 532         g_free(nearest);
 533         g_free(uri);
 534         if (!conus->path) {
 535                 conus->message = "Fetch failed";
 536                 goto out;
 537         }
 538
 539 out:
 540         g_debug("Conus: update_thread - done");
 541         g_idle_add(_conus_update_end, conus);
 542         return NULL;
 543 }
 544
 545 void _conus_update(RadarConus *conus)
 546 {
 547         if (!g_static_mutex_trylock(&conus->loading))
 548                 return;
 549         conus->time = grits_viewer_get_time(conus->viewer);
 550         g_debug("Conus: update - %d",
 551                         (gint)conus->time);
 552
 553         /* Add a progress bar */
 554         GtkWidget *progress = gtk_progress_bar_new();
 555         gtk_progress_bar_set_text(GTK_PROGRESS_BAR(progress), "Loading...");
 556         _gtk_bin_set_child(GTK_BIN(conus->config), progress);
 557
 558         g_thread_create(_conus_update_thread, conus, FALSE, NULL);
 559 }
 560
 561 void radar_conus_toggle(RadarConus *conus)
 562 {
 563         GRITS_OBJECT(conus->tile[0])->hidden =
 564                 !GRITS_OBJECT(conus->tile[0])->hidden;
 565         GRITS_OBJECT(conus->tile[1])->hidden =
 566                 !GRITS_OBJECT(conus->tile[1])->hidden;
 567         gtk_widget_queue_draw(GTK_WIDGET(conus->viewer));
 568 }
 569
 570 RadarConus *radar_conus_new(GtkWidget *pconfig,
 571                 GritsViewer *viewer, GritsHttp *http)
 572 {
 573         RadarConus *conus = g_new0(RadarConus, 1);
 574         conus->viewer  = g_object_ref(viewer);
 575         conus->http    = http;
 576         conus->config  = gtk_alignment_new(0, 0, 1, 1);
 577         g_static_mutex_init(&conus->loading);
 578
 579         gdouble south =  CONUS_NORTH - CONUS_DEG_PER_PX*CONUS_HEIGHT;
 580         gdouble east  =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH;
 581         gdouble mid   =  CONUS_WEST  + CONUS_DEG_PER_PX*CONUS_WIDTH/2;
 582         conus->tile[0] = grits_tile_new(NULL, CONUS_NORTH, south, mid, CONUS_WEST);
 583         conus->tile[1] = grits_tile_new(NULL, CONUS_NORTH, south, east, mid);
 584         conus->tile[0]->zindex = 2;
 585         conus->tile[1]->zindex = 1;
 586         conus->tile_ref[0] = grits_viewer_add(viewer,
 587                         GRITS_OBJECT(conus->tile[0]), GRITS_LEVEL_WORLD, TRUE);
 588         conus->tile_ref[1] = grits_viewer_add(viewer,
 589                         GRITS_OBJECT(conus->tile[1]), GRITS_LEVEL_WORLD, TRUE);
 590
 591         conus->time_id = g_signal_connect_swapped(viewer, "time-changed",
 592                         G_CALLBACK(_conus_update), conus);
 593         conus->refresh_id = g_signal_connect_swapped(viewer, "refresh",
 594                         G_CALLBACK(_conus_update), conus);
 595
 596         gtk_notebook_append_page(GTK_NOTEBOOK(pconfig), conus->config,
 597                         _gtk_check_label_new("Conus", TRUE,
 598                                 G_CALLBACK(radar_conus_toggle), conus));
 599         _conus_update(conus);
 600         return conus;
 601 }
 602
 603 void radar_conus_free(RadarConus *conus)
 604 {
 605         g_signal_handler_disconnect(conus->viewer, conus->time_id);
 606         g_signal_handler_disconnect(conus->viewer, conus->refresh_id);
 607
 608         for (int i = 0; i < 2; i++) {
 609                 GritsTile *tile = conus->tile[i];
 610                 gpointer   ref  = conus->tile_ref[i];
 611                 if (tile->data) {
 612                         glDeleteTextures(1, tile->data);
 613                         g_free(tile->data);
 614                 }
 615                 grits_viewer_remove(conus->viewer, ref);
 616         }
 617
 618         g_object_unref(conus->viewer);
 619         g_free(conus);
 620 }
 621
 622
 623 /********************
 624  * GritsPluginRadar *
 625  ********************/
 626 static void _draw_hud(GritsCallback *callback, GritsOpenGL *opengl, gpointer _self)
 627 {
 628         /* TODO, pick correct colormaps */
 629         AWeatherColormap *colormap = &colormaps[0];
 630
 631         g_debug("GritsPluginRadar: _draw_hud");
 632         /* Print the color table */
 633         glMatrixMode(GL_MODELVIEW ); glLoadIdentity();
 634         glMatrixMode(GL_PROJECTION); glLoadIdentity();
 635         glDisable(GL_TEXTURE_2D);
 636         glDisable(GL_ALPHA_TEST);
 637         glDisable(GL_CULL_FACE);
 638         glDisable(GL_LIGHTING);
 639         glEnable(GL_COLOR_MATERIAL);
 640         glBegin(GL_QUADS);
 641         int i;
 642         for (i = 0; i < 256; i++) {
 643                 glColor4ubv(colormap->data[i]);
 644                 glVertex3f(-1.0, (float)((i  ) - 256/2)/(256/2), 0.0); // bot left
 645                 glVertex3f(-1.0, (float)((i+1) - 256/2)/(256/2), 0.0); // top left
 646                 glVertex3f(-0.9, (float)((i+1) - 256/2)/(256/2), 0.0); // top right
 647                 glVertex3f(-0.9, (float)((i  ) - 256/2)/(256/2), 0.0); // bot right
 648         }
 649         glEnd();
 650 }
 651
 652 /* Methods */
 653 GritsPluginRadar *grits_plugin_radar_new(GritsViewer *viewer, GritsPrefs *prefs)
 654 {
 655         /* TODO: move to constructor if possible */
 656         g_debug("GritsPluginRadar: new");
 657         GritsPluginRadar *self = g_object_new(GRITS_TYPE_PLUGIN_RADAR, NULL);
 658         self->viewer = viewer;
 659         self->prefs  = prefs;
 660
 661         /* Load HUD */
 662         GritsCallback *hud_cb = grits_callback_new(_draw_hud, self);
 663         self->hud_ref = grits_viewer_add(viewer, GRITS_OBJECT(hud_cb), GRITS_LEVEL_HUD, FALSE);
 664
 665         /* Load Conus */
 666         self->conus = radar_conus_new(self->config, self->viewer, self->conus_http);
 667
 668         /* Load radar sites */
 669         for (city_t *city = cities; city->type; city++) {
 670                 if (city->type != LOCATION_CITY)
 671                         continue;
 672                 RadarSite *site = radar_site_new(city, self->config,
 673                                 self->viewer, self->prefs, self->sites_http);
 674                 g_hash_table_insert(self->sites, city->code, site);
 675         }
 676
 677         return self;
 678 }
 679
 680 static GtkWidget *grits_plugin_radar_get_config(GritsPlugin *_self)
 681 {
 682         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(_self);
 683         return self->config;
 684 }
 685
 686 /* GObject code */
 687 static void grits_plugin_radar_plugin_init(GritsPluginInterface *iface);
 688 G_DEFINE_TYPE_WITH_CODE(GritsPluginRadar, grits_plugin_radar, G_TYPE_OBJECT,
 689                 G_IMPLEMENT_INTERFACE(GRITS_TYPE_PLUGIN,
 690                         grits_plugin_radar_plugin_init));
 691 static void grits_plugin_radar_plugin_init(GritsPluginInterface *iface)
 692 {
 693         g_debug("GritsPluginRadar: plugin_init");
 694         /* Add methods to the interface */
 695         iface->get_config = grits_plugin_radar_get_config;
 696 }
 697 static void grits_plugin_radar_init(GritsPluginRadar *self)
 698 {
 699         g_debug("GritsPluginRadar: class_init");
 700         /* Set defaults */
 701         self->sites_http = grits_http_new(G_DIR_SEPARATOR_S
 702                         "nexrad" G_DIR_SEPARATOR_S
 703                         "level2" G_DIR_SEPARATOR_S);
 704         self->conus_http = grits_http_new(G_DIR_SEPARATOR_S
 705                         "nexrad" G_DIR_SEPARATOR_S
 706                         "conus"  G_DIR_SEPARATOR_S);
 707         self->sites      = g_hash_table_new_full(g_str_hash, g_str_equal,
 708                                 NULL, (GDestroyNotify)radar_site_free);
 709         self->config     = gtk_notebook_new();
 710         /* Need to position on the top because of Win32 bug */
 711         gtk_notebook_set_tab_pos(GTK_NOTEBOOK(self->config), GTK_POS_BOTTOM);
 712 }
 713 static void grits_plugin_radar_dispose(GObject *gobject)
 714 {
 715         g_debug("GritsPluginRadar: dispose");
 716         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(gobject);
 717         grits_viewer_remove(self->viewer, self->hud_ref);
 718         radar_conus_free(self->conus);
 719         /* Drop references */
 720         G_OBJECT_CLASS(grits_plugin_radar_parent_class)->dispose(gobject);
 721 }
 722 static void grits_plugin_radar_finalize(GObject *gobject)
 723 {
 724         g_debug("GritsPluginRadar: finalize");
 725         GritsPluginRadar *self = GRITS_PLUGIN_RADAR(gobject);
 726         /* Free data */
 727         grits_http_free(self->conus_http);
 728         grits_http_free(self->sites_http);
 729         g_hash_table_destroy(self->sites);
 730         gtk_widget_destroy(self->config);
 731         G_OBJECT_CLASS(grits_plugin_radar_parent_class)->finalize(gobject);
 732
 733 }
 734 static void grits_plugin_radar_class_init(GritsPluginRadarClass *klass)
 735 {
 736         g_debug("GritsPluginRadar: class_init");
 737         GObjectClass *gobject_class = (GObjectClass*)klass;
 738         gobject_class->dispose  = grits_plugin_radar_dispose;
 739         gobject_class->finalize = grits_plugin_radar_finalize;
 740 }