Pileus Git - grits/blob - src/aweather-gui.c

   1 /*
   2  * Copyright (C) 2009 Andy Spencer <spenceal@rose-hulman.edu>
   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 #include <config.h>
  19 #include <gtk/gtk.h>
  20 #include <gdk/gdkkeysyms.h>
  21 #include <math.h>
  22
  23 #include "misc.h"
  24 #include "aweather-gui.h"
  25 #include "aweather-plugin.h"
  26 #include "gis-opengl.h"
  27 #include "location.h"
  28
  29 /* Needed prototpes */
  30 gboolean on_gui_key_press(GtkWidget *widget, GdkEventKey *event, AWeatherGui *self);
  31 static void site_setup(AWeatherGui *self);
  32 static void time_setup(AWeatherGui *self);
  33
  34 /****************
  35  * GObject code *
  36  ****************/
  37 G_DEFINE_TYPE(AWeatherGui, aweather_gui, GTK_TYPE_WINDOW);
  38 static void aweather_gui_init(AWeatherGui *self)
  39 {
  40         g_debug("AWeatherGui: init");
  41
  42         /* Setup window */
  43         self->builder = gtk_builder_new();
  44         GError *error = NULL;
  45         if (!gtk_builder_add_from_file(self->builder, DATADIR "/aweather/main.ui", &error))
  46                 g_error("Failed to create gtk builder: %s", error->message);
  47         gtk_widget_reparent(aweather_gui_get_widget(self, "body"), GTK_WIDGET(self));
  48
  49         /* GIS things */
  50         GtkWidget *drawing = aweather_gui_get_widget(self, "drawing");
  51         self->world   = gis_world_new();
  52         self->view    = gis_view_new();
  53         self->opengl  = gis_opengl_new(self->world, self->view, GTK_DRAWING_AREA(drawing));
  54
  55         /* Plugins */
  56         self->plugins     = NULL;
  57         // TODO: set/load these with prefereces
  58         aweather_gui_load_plugin(self, "example");
  59         //aweather_gui_load_plugin(self, "radar");
  60         //aweather_gui_load_plugin(self, "ridge");
  61         self->gtk_plugins = GTK_LIST_STORE(aweather_gui_get_object(self, "plugins"));
  62         GDir *dir = g_dir_open(PLUGINDIR, 0, NULL);
  63         const gchar *name;
  64         GtkTreeIter iter;
  65         while ((name = g_dir_read_name(dir))) {
  66                 if (g_pattern_match_simple("*.so", name)) {
  67                         gtk_list_store_append(self->gtk_plugins, &iter);
  68                         gtk_list_store_set(self->gtk_plugins, &iter, 0, name, 1, FALSE, -1);
  69                 }
  70         }
  71
  72         /* Misc, helpers */
  73         site_setup(self);
  74         time_setup(self);
  75
  76         /* Connect signals */
  77         gtk_builder_connect_signals(self->builder, self);
  78         g_signal_connect(self, "key-press-event",
  79                         G_CALLBACK(on_gui_key_press), self);
  80         g_signal_connect_swapped(self->world, "offline",
  81                         G_CALLBACK(gtk_toggle_action_set_active),
  82                         aweather_gui_get_object(self, "offline"));
  83
  84         /* Preferences */
  85         gchar *filename = g_build_filename(g_get_user_config_dir(),
  86                         "aweather", "config.ini", NULL);
  87         self->prefs = g_key_file_new();
  88         g_key_file_load_from_file(self->prefs, filename, G_KEY_FILE_KEEP_COMMENTS, &error);
  89 }
  90 static GObject *aweather_gui_constructor(GType gtype, guint n_properties,
  91                 GObjectConstructParam *properties)
  92 {
  93         g_debug("aweather_gui: constructor");
  94         GObjectClass *parent_class = G_OBJECT_CLASS(aweather_gui_parent_class);
  95         return  parent_class->constructor(gtype, n_properties, properties);
  96 }
  97 static void aweather_gui_dispose(GObject *_self)
  98 {
  99         g_debug("AWeatherGui: dispose");
 100         AWeatherGui *self = AWEATHER_GUI(_self);
 101         if (self->builder) {
 102                 /* Reparent to avoid double unrefs */
 103                 GtkWidget *body   = aweather_gui_get_widget(self, "body");
 104                 GtkWidget *window = aweather_gui_get_widget(self, "main_window");
 105                 gtk_widget_reparent(body, window);
 106                 g_object_unref(self->builder);
 107                 self->builder = NULL;
 108         }
 109         if (self->world) {
 110                 g_object_unref(self->world);
 111                 self->world = NULL;
 112         }
 113         if (self->view) {
 114                 g_object_unref(self->view);
 115                 self->view = NULL;
 116         }
 117         if (self->opengl) {
 118                 g_object_unref(self->opengl);
 119                 self->opengl = NULL;
 120         }
 121         if (self->plugins) {
 122                 g_list_foreach(self->plugins, (GFunc)g_object_unref, NULL);
 123                 g_list_free(self->plugins);
 124                 self->plugins = NULL;
 125         }
 126         if (self->prefs) {
 127                 gchar *filename = g_build_filename(g_get_user_config_dir(),
 128                                 "aweather", "config.ini", NULL);
 129                 gsize length;
 130                 g_mkdir_with_parents(g_path_get_dirname(filename), 0755);
 131                 gchar *data = g_key_file_to_data(self->prefs, &length, NULL);
 132                 g_file_set_contents(filename, data, length, NULL);
 133                 g_key_file_free(self->prefs);
 134                 self->prefs = NULL;
 135         }
 136         G_OBJECT_CLASS(aweather_gui_parent_class)->dispose(_self);
 137 }
 138 static void aweather_gui_finalize(GObject *_self)
 139 {
 140         g_debug("AWeatherGui: finalize");
 141         G_OBJECT_CLASS(aweather_gui_parent_class)->finalize(_self);
 142         gtk_main_quit();
 143
 144 }
 145 static void aweather_gui_class_init(AWeatherGuiClass *klass)
 146 {
 147         g_debug("AWeatherGui: class_init");
 148         GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
 149         gobject_class->constructor  = aweather_gui_constructor;
 150         gobject_class->dispose      = aweather_gui_dispose;
 151         gobject_class->finalize     = aweather_gui_finalize;
 152 }
 153
 154 /*************
 155  * Callbacks *
 156  *************/
 157 gboolean on_gui_key_press(GtkWidget *widget, GdkEventKey *event, AWeatherGui *self)
 158 {
 159         g_debug("AWeatherGui: on_gui_key_press - key=%x, state=%x",
 160                         event->keyval, event->state);
 161         if (event->keyval == GDK_q)
 162                 gtk_widget_destroy(GTK_WIDGET(self));
 163         else if (event->keyval == GDK_r && event->state & GDK_CONTROL_MASK)
 164                 gis_world_refresh(self->world);
 165         else if (event->keyval == GDK_Tab || event->keyval == GDK_ISO_Left_Tab) {
 166                 GtkNotebook *tabs = GTK_NOTEBOOK(aweather_gui_get_widget(self, "tabs"));
 167                 gint num_tabs = gtk_notebook_get_n_pages(tabs);
 168                 gint cur_tab  = gtk_notebook_get_current_page(tabs);
 169                 if (event->state & GDK_SHIFT_MASK)
 170                         gtk_notebook_set_current_page(tabs, (cur_tab-1)%num_tabs);
 171                 else
 172                         gtk_notebook_set_current_page(tabs, (cur_tab+1)%num_tabs);
 173         };
 174         return FALSE;
 175 }
 176
 177 void on_quit(GtkMenuItem *menu, AWeatherGui *self)
 178 {
 179         gtk_widget_destroy(GTK_WIDGET(self));
 180 }
 181
 182 void on_zoomin(GtkAction *action, AWeatherGui *self)
 183 {
 184         gis_view_zoom(self->view, 3./4);
 185 }
 186
 187 void on_zoomout(GtkAction *action, AWeatherGui *self)
 188 {
 189         gis_view_zoom(self->view, 4./3);
 190 }
 191
 192 void on_refresh(GtkAction *action, AWeatherGui *self)
 193 {
 194         gis_world_refresh(self->world);
 195 }
 196
 197 void load_window(gchar *name, AWeatherGui *self)
 198 {
 199         // TODO: use gtk_widget_hide_on_delete()
 200         char *objects[2] = {name, NULL};
 201         gtk_builder_add_objects_from_file(self->builder,
 202                         DATADIR "/aweather/main.ui", objects, NULL);
 203         gtk_builder_connect_signals(self->builder, self);
 204         GtkWidget *main_win = aweather_gui_get_widget(self, "main_window");
 205         GtkWidget *this_win = aweather_gui_get_widget(self, name);
 206         gtk_window_set_transient_for(GTK_WINDOW(this_win), GTK_WINDOW(main_win));
 207         gtk_widget_show_all(this_win);
 208 }
 209
 210 void on_about(GtkAction *action, AWeatherGui *self)
 211 {
 212         load_window("about_window", self);
 213 }
 214
 215 void on_plugin_toggled(GtkCellRendererToggle *cell, gchar *path_str, AWeatherGui *self)
 216 {
 217         GtkWidget    *tview = aweather_gui_get_widget(self, "plugins_view");
 218         GtkTreeModel *model = gtk_tree_view_get_model(GTK_TREE_VIEW(tview));
 219         g_message("model=%p", model);
 220         gboolean state;
 221         gchar *so;
 222         GtkTreeIter iter;
 223         gtk_tree_model_get_iter_from_string(model, &iter, path_str);
 224         gtk_tree_model_get(model, &iter, 0, &so, 1, &state, -1);
 225         state = !state;
 226         gtk_list_store_set(GTK_LIST_STORE(model), &iter, 1, state, -1);
 227         g_strdelimit(so, ".", '\0');
 228         if (state)
 229                 aweather_gui_load_plugin(self, so);
 230         else
 231                 aweather_gui_unload_plugin(self, so);
 232         g_free(so);
 233         gtk_widget_show_all(aweather_gui_get_widget(self, "tabs"));
 234 }
 235 void on_prefs(GtkAction *action, AWeatherGui *self)
 236 {
 237         /* get prefs */
 238         gchar *is = g_key_file_get_string(self->prefs,  "general", "initial_site", NULL);
 239         gchar *nu = g_key_file_get_string(self->prefs,  "general", "nexrad_url",   NULL);
 240         gint   ll = g_key_file_get_integer(self->prefs, "general", "log_level",    NULL);
 241         load_window("prefs_window", self);
 242         /* set prefs */
 243         GtkWidget *isw = aweather_gui_get_widget(self, "initial_site");
 244         GtkWidget *nuw = aweather_gui_get_widget(self, "nexrad_url");
 245         GtkWidget *llw = aweather_gui_get_widget(self, "log_level");
 246         if (is) gtk_entry_set_text(GTK_ENTRY(isw), is), g_free(is);
 247         if (nu) gtk_entry_set_text(GTK_ENTRY(nuw), nu), g_free(nu);
 248         if (ll) gtk_spin_button_set_value(GTK_SPIN_BUTTON(llw), ll);
 249
 250         /* Plugins */
 251         GtkTreeView       *tview = GTK_TREE_VIEW(aweather_gui_get_widget(self, "plugins_view"));
 252         GtkCellRenderer   *rend1 = gtk_cell_renderer_text_new();
 253         GtkCellRenderer   *rend2 = gtk_cell_renderer_toggle_new();
 254         GtkTreeViewColumn *col1  = gtk_tree_view_column_new_with_attributes(
 255                         "Plugin",  rend1, "text",   0, NULL);
 256         GtkTreeViewColumn *col2  = gtk_tree_view_column_new_with_attributes(
 257                         "Enabled", rend2, "active", 1, NULL);
 258         gtk_tree_view_append_column(tview, col1);
 259         gtk_tree_view_append_column(tview, col2);
 260         g_signal_connect(rend2, "toggled", G_CALLBACK(on_plugin_toggled), self);
 261         gtk_tree_view_set_model(GTK_TREE_VIEW(tview), GTK_TREE_MODEL(self->gtk_plugins));
 262 }
 263
 264 void on_time_changed(GtkTreeView *view, GtkTreePath *path,
 265                 GtkTreeViewColumn *column, AWeatherGui *self)
 266 {
 267         gchar *time;
 268         GtkTreeIter iter;
 269         GtkTreeModel *model = gtk_tree_view_get_model(view);
 270         gtk_tree_model_get_iter(model, &iter, path);
 271         gtk_tree_model_get(model, &iter, 0, &time, -1);
 272         gis_view_set_time(self->view, time);
 273         g_free(time);
 274 }
 275
 276 void on_site_changed(GtkComboBox *combo, AWeatherGui *self)
 277 {
 278         gchar *site;
 279         GtkTreeIter iter;
 280         GtkTreeModel *model = gtk_combo_box_get_model(combo);
 281         gtk_combo_box_get_active_iter(combo, &iter);
 282         gtk_tree_model_get(model, &iter, 1, &site, -1);
 283         gis_view_set_site(self->view, site);
 284         g_free(site);
 285 }
 286
 287 /* TODO: replace the code in these with `gtk_tree_model_find' utility */
 288 static void update_time_widget(GisView *view, const char *time, AWeatherGui *self)
 289 {
 290         g_debug("AWeatherGui: update_time_widget - time=%s", time);
 291         GtkTreeView  *tview = GTK_TREE_VIEW(aweather_gui_get_widget(self, "time"));
 292         GtkTreeModel *model = GTK_TREE_MODEL(gtk_tree_view_get_model(tview));
 293         for (int i = 0; i < gtk_tree_model_iter_n_children(model, NULL); i++) {
 294                 char *text;
 295                 GtkTreeIter iter;
 296                 gtk_tree_model_iter_nth_child(model, &iter, NULL, i);
 297                 gtk_tree_model_get(model, &iter, 0, &text, -1);
 298                 if (g_str_equal(text, time)) {
 299                         GtkTreePath *path = gtk_tree_model_get_path(model, &iter);
 300                         g_signal_handlers_block_by_func(tview,
 301                                         G_CALLBACK(on_site_changed), self);
 302                         gtk_tree_view_set_cursor(tview, path, NULL, FALSE);
 303                         g_signal_handlers_unblock_by_func(tview,
 304                                         G_CALLBACK(on_site_changed), self);
 305                         gtk_tree_path_free(path);
 306                         g_free(text);
 307                         return;
 308                 }
 309                 g_free(text);
 310         }
 311 }
 312 static void update_site_widget(GisView *view, char *site, AWeatherGui *self)
 313 {
 314         g_debug("AWeatherGui: update_site_widget - site=%s", site);
 315         GtkComboBox  *combo = GTK_COMBO_BOX(aweather_gui_get_widget(self, "site"));
 316         GtkTreeModel *model = GTK_TREE_MODEL(gtk_combo_box_get_model(combo));
 317         for (int i = 0; i < gtk_tree_model_iter_n_children(model, NULL); i++) {
 318                 GtkTreeIter iter1;
 319                 gtk_tree_model_iter_nth_child(model, &iter1, NULL, i);
 320                 for (int i = 0; i < gtk_tree_model_iter_n_children(model, &iter1); i++) {
 321                         GtkTreeIter iter2;
 322                         gtk_tree_model_iter_nth_child(model, &iter2, &iter1, i);
 323                         char *text;
 324                         gtk_tree_model_get(model, &iter2, 1, &text, -1);
 325                         if (text == NULL)
 326                                 continue;
 327                         if (g_str_equal(text, site)) {
 328                                 g_signal_handlers_block_by_func(combo,
 329                                                 G_CALLBACK(on_site_changed), self);
 330                                 gtk_combo_box_set_active_iter(combo, &iter2);
 331                                 g_signal_handlers_unblock_by_func(combo,
 332                                                 G_CALLBACK(on_site_changed), self);
 333                                 g_free(text);
 334                                 return;
 335                         }
 336                         g_free(text);
 337                 }
 338         }
 339 }
 340 /* Prefs callbacks */
 341 void on_offline(GtkToggleAction *action, AWeatherGui *self)
 342 {
 343         gboolean value = gtk_toggle_action_get_active(action);
 344         g_debug("AWeatherGui: on_offline - offline=%d", value);
 345         g_key_file_set_boolean(self->prefs, "general", "offline", value);
 346         gis_world_set_offline(self->world, value);
 347 }
 348 void on_initial_site_changed(GtkEntry *entry, AWeatherGui *self)
 349 {
 350         const gchar *text = gtk_entry_get_text(entry);
 351         g_debug("AWeatherGui: on_initial_site_changed - site=%s", text);
 352         g_key_file_set_string(self->prefs, "general", "initial_site", text);
 353 }
 354 void on_nexrad_url_changed(GtkEntry *entry, AWeatherGui *self)
 355 {
 356         const gchar *text = gtk_entry_get_text(entry);
 357         g_debug("AWeatherGui: on_nexrad_url_changed - url=%s", text);
 358         g_key_file_set_string(self->prefs, "general", "nexrad_url", text);
 359 }
 360 int on_log_level_changed(GtkSpinButton *spinner, AWeatherGui *self)
 361 {
 362         gint value = gtk_spin_button_get_value_as_int(spinner);
 363         g_debug("AWeatherGui: on_log_level_changed - %p, level=%d", self, value);
 364         g_key_file_set_integer(self->prefs, "general", "log_level", value);
 365         g_debug("test");
 366         return TRUE;
 367 }
 368 // plugins
 369
 370 /*****************
 371  * Setup helpers *
 372  *****************/
 373 static void combo_sensitive(GtkCellLayout *cell_layout, GtkCellRenderer *cell,
 374                 GtkTreeModel *tree_model, GtkTreeIter *iter, gpointer data)
 375 {
 376         gboolean sensitive = !gtk_tree_model_iter_has_child(tree_model, iter);
 377         g_object_set(cell, "sensitive", sensitive, NULL);
 378 }
 379
 380 static void site_setup(AWeatherGui *self)
 381 {
 382         GtkTreeIter state, city;
 383         GtkTreeStore *store = GTK_TREE_STORE(aweather_gui_get_object(self, "sites"));
 384         for (int i = 0; cities[i].label; i++) {
 385                 if (cities[i].type == LOCATION_STATE) {
 386                         gtk_tree_store_append(store, &state, NULL);
 387                         gtk_tree_store_set   (store, &state, 0, cities[i].label,
 388                                                              1, cities[i].code,  -1);
 389                 } else {
 390                         gtk_tree_store_append(store, &city, &state);
 391                         gtk_tree_store_set   (store, &city, 0, cities[i].label,
 392                                                             1, cities[i].code,  -1);
 393                 }
 394         }
 395
 396         GtkWidget *combo    = aweather_gui_get_widget(self, "site");
 397         GObject   *renderer = aweather_gui_get_object(self, "site_rend");
 398         gtk_cell_layout_set_cell_data_func(GTK_CELL_LAYOUT(combo),
 399                         GTK_CELL_RENDERER(renderer), combo_sensitive, NULL, NULL);
 400
 401         g_signal_connect(self->view, "site-changed",
 402                         G_CALLBACK(update_site_widget), self);
 403 }
 404
 405 static void time_setup(AWeatherGui *self)
 406 {
 407         GtkTreeView       *tview = GTK_TREE_VIEW(aweather_gui_get_widget(self, "time"));
 408         GtkCellRenderer   *rend  = gtk_cell_renderer_text_new();
 409         GtkTreeViewColumn *col   = gtk_tree_view_column_new_with_attributes(
 410                                         "Time", rend, "text", 0, NULL);
 411
 412         gtk_tree_view_append_column(tview, col);
 413         g_object_set(rend, "size-points", 8.0, NULL);
 414
 415         g_signal_connect(self->view, "time-changed",
 416                         G_CALLBACK(update_time_widget), self);
 417 }
 418
 419
 420 /***********
 421  * Methods *
 422  ***********/
 423 AWeatherGui *aweather_gui_new()
 424 {
 425         g_debug("AWeatherGui: new");
 426         return g_object_new(AWEATHER_TYPE_GUI, NULL);
 427 }
 428 GisWorld *aweather_gui_get_world(AWeatherGui *self)
 429 {
 430         g_assert(AWEATHER_IS_GUI(self));
 431         return self->world;
 432 }
 433 GisView *aweather_gui_get_view(AWeatherGui *self)
 434 {
 435         g_assert(AWEATHER_IS_GUI(self));
 436         return self->view;
 437 }
 438 GisOpenGL *aweather_gui_get_opengl(AWeatherGui *self)
 439 {
 440         g_assert(AWEATHER_IS_GUI(self));
 441         return self->opengl;
 442 }
 443 GtkBuilder *aweather_gui_get_builder(AWeatherGui *self)
 444 {
 445         g_debug("AWeatherGui: get_builder");
 446         g_assert(AWEATHER_IS_GUI(self));
 447         return self->builder;
 448 }
 449 GtkWidget *aweather_gui_get_widget(AWeatherGui *self, const gchar *name)
 450 {
 451         g_debug("AWeatherGui: get_widget - name=%s", name);
 452         g_assert(AWEATHER_IS_GUI(self));
 453         GObject *widget = gtk_builder_get_object(self->builder, name);
 454         if (!GTK_IS_WIDGET(widget))
 455                 g_error("Failed to get widget `%s'", name);
 456         return GTK_WIDGET(widget);
 457 }
 458 GObject *aweather_gui_get_object(AWeatherGui *self, const gchar *name)
 459 {
 460         g_debug("AWeatherGui: get_widget - name=%s", name);
 461         g_assert(AWEATHER_IS_GUI(self));
 462         return gtk_builder_get_object(self->builder, name);
 463 }
 464 gboolean aweather_gui_load_plugin(AWeatherGui *self, const char *name)
 465 {
 466         gchar *path = g_strdup_printf("%s/%s.%s", PLUGINDIR, name, G_MODULE_SUFFIX);
 467         GModule *module = g_module_open(path, 0);
 468         g_free(path);
 469         if (module == NULL) {
 470                 g_warning("Unable to load module %s: %s", name, g_module_error());
 471                 return FALSE;
 472         }
 473
 474         AWeatherPlugin *(*constructor)();
 475         gchar *constructor_str = g_strconcat("aweather_", name, "_new", NULL);
 476         if (!g_module_symbol(module, constructor_str, (gpointer*)&constructor)) {
 477                 g_warning("Unable to load symbol %s from %s: %s",
 478                                 constructor_str, name, g_module_error());
 479                 g_module_close(module);
 480                 g_free(constructor_str);
 481                 return FALSE;
 482         }
 483         g_free(constructor_str);
 484
 485         self->plugins = g_list_append(self->plugins, constructor(self));
 486         self->opengl->plugins = self->plugins;
 487         return TRUE;
 488 }
 489 gboolean aweather_gui_unload_plugin(AWeatherGui *self, const char *name)
 490 {
 491         return FALSE;
 492 }