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 /****************
  30  * GObject code *
  31  ****************/
  32 G_DEFINE_TYPE(AWeatherGui, aweather_gui, GTK_TYPE_WINDOW);
  33 static void aweather_gui_init(AWeatherGui *self)
  34 {
  35         self->world   = NULL;
  36         self->view    = NULL;
  37         self->opengl  = NULL;
  38         self->builder = NULL;
  39         self->plugins = NULL;
  40         g_debug("AWeatherGui: init");
  41 }
  42 static GObject *aweather_gui_constructor(GType gtype, guint n_properties,
  43                 GObjectConstructParam *properties)
  44 {
  45         g_debug("aweather_gui: constructor");
  46         GObjectClass *parent_class = G_OBJECT_CLASS(aweather_gui_parent_class);
  47         return  parent_class->constructor(gtype, n_properties, properties);
  48 }
  49 static void aweather_gui_dispose(GObject *_self)
  50 {
  51         g_debug("AWeatherGui: dispose");
  52         AWeatherGui *self = AWEATHER_GUI(_self);
  53         if (self->world) {
  54                 g_object_unref(self->world);
  55                 self->world = NULL;
  56         }
  57         if (self->view) {
  58                 g_object_unref(self->view);
  59                 self->view = NULL;
  60         }
  61         if (self->opengl) {
  62                 g_object_unref(self->opengl);
  63                 self->opengl = NULL;
  64         }
  65         if (self->builder) {
  66                 /* Reparent to avoid double unrefs */
  67                 GtkWidget *body   = aweather_gui_get_widget(self, "body");
  68                 GtkWidget *window = aweather_gui_get_widget(self, "window");
  69                 gtk_widget_reparent(body, window);
  70                 g_object_unref(self->builder);
  71                 self->builder = NULL;
  72         }
  73         if (self->plugins) {
  74                 g_list_foreach(self->plugins, (GFunc)g_object_unref, NULL);
  75                 g_list_free(self->plugins);
  76                 self->plugins = NULL;
  77         }
  78         G_OBJECT_CLASS(aweather_gui_parent_class)->dispose(_self);
  79 }
  80 static void aweather_gui_finalize(GObject *_self)
  81 {
  82         g_debug("AWeatherGui: finalize");
  83         G_OBJECT_CLASS(aweather_gui_parent_class)->finalize(_self);
  84         gtk_main_quit();
  85
  86 }
  87 static void aweather_gui_class_init(AWeatherGuiClass *klass)
  88 {
  89         g_debug("AWeatherGui: class_init");
  90         GObjectClass *gobject_class = G_OBJECT_CLASS(klass);
  91         gobject_class->constructor  = aweather_gui_constructor;
  92         gobject_class->dispose      = aweather_gui_dispose;
  93         gobject_class->finalize     = aweather_gui_finalize;
  94 }
  95
  96 /*************
  97  * Callbacks *
  98  *************/
  99 gboolean on_gui_key_press(GtkWidget *widget, GdkEventKey *event, AWeatherGui *self)
 100 {
 101         g_debug("AWeatherGui: on_gui_key_press - key=%x, state=%x",
 102                         event->keyval, event->state);
 103         if (event->keyval == GDK_q)
 104                 gtk_widget_destroy(GTK_WIDGET(self));
 105         else if (event->keyval == GDK_r && event->state & GDK_CONTROL_MASK)
 106                 gis_world_refresh(self->world);
 107         else if (event->keyval == GDK_Tab || event->keyval == GDK_ISO_Left_Tab) {
 108                 GtkNotebook *tabs = GTK_NOTEBOOK(aweather_gui_get_widget(self, "tabs"));
 109                 gint num_tabs = gtk_notebook_get_n_pages(tabs);
 110                 gint cur_tab  = gtk_notebook_get_current_page(tabs);
 111                 if (event->state & GDK_SHIFT_MASK)
 112                         gtk_notebook_set_current_page(tabs, (cur_tab-1)%num_tabs);
 113                 else
 114                         gtk_notebook_set_current_page(tabs, (cur_tab+1)%num_tabs);
 115         };
 116         return FALSE;
 117 }
 118
 119 void on_quit(GtkMenuItem *menu, AWeatherGui *self)
 120 {
 121         gtk_widget_destroy(GTK_WIDGET(self));
 122 }
 123
 124 void on_offline(GtkToggleAction *action, AWeatherGui *self)
 125 {
 126         gis_world_set_offline(self->world,
 127                 gtk_toggle_action_get_active(action));
 128 }
 129
 130 void on_zoomin(GtkAction *action, AWeatherGui *self)
 131 {
 132         gis_view_zoom(self->view, 3./4);
 133 }
 134
 135 void on_zoomout(GtkAction *action, AWeatherGui *self)
 136 {
 137         gis_view_zoom(self->view, 4./3);
 138 }
 139
 140 void on_refresh(GtkAction *action, AWeatherGui *self)
 141 {
 142         gis_world_refresh(self->world);
 143 }
 144
 145 void on_about(GtkAction *action, AWeatherGui *self)
 146 {
 147         // TODO: use gtk_widget_hide_on_delete()
 148         GError *error = NULL;
 149         GtkBuilder *builder = gtk_builder_new();
 150         if (!gtk_builder_add_from_file(builder, DATADIR "/aweather/about.ui", &error))
 151                 g_error("Failed to create gtk builder: %s", error->message);
 152         gtk_builder_connect_signals(builder, NULL);
 153         GtkWidget *window = GTK_WIDGET(gtk_builder_get_object(builder, "window"));
 154         gtk_window_set_transient_for(GTK_WINDOW(window),
 155                         GTK_WINDOW(aweather_gui_get_widget(self, "window")));
 156         gtk_widget_show_all(window);
 157         g_object_unref(builder);
 158 }
 159
 160 void on_time_changed(GtkTreeView *view, GtkTreePath *path,
 161                 GtkTreeViewColumn *column, AWeatherGui *self)
 162 {
 163         gchar *time;
 164         GtkTreeIter iter;
 165         GtkTreeModel *model = gtk_tree_view_get_model(view);
 166         gtk_tree_model_get_iter(model, &iter, path);
 167         gtk_tree_model_get(model, &iter, 0, &time, -1);
 168         gis_view_set_time(self->view, time);
 169         g_free(time);
 170 }
 171
 172 void on_site_changed(GtkComboBox *combo, AWeatherGui *self)
 173 {
 174         gchar *site;
 175         GtkTreeIter iter;
 176         GtkTreeModel *model = gtk_combo_box_get_model(combo);
 177         gtk_combo_box_get_active_iter(combo, &iter);
 178         gtk_tree_model_get(model, &iter, 1, &site, -1);
 179         gis_view_set_site(self->view, site);
 180         g_free(site);
 181 }
 182
 183 /* TODO: replace the code in these with `gtk_tree_model_find' utility */
 184 static void update_time_widget(GisView *view, const char *time, AWeatherGui *self)
 185 {
 186         g_debug("AWeatherGui: update_time_widget - time=%s", time);
 187         GtkTreeView  *tview = GTK_TREE_VIEW(aweather_gui_get_widget(self, "time"));
 188         GtkTreeModel *model = GTK_TREE_MODEL(gtk_tree_view_get_model(tview));
 189         for (int i = 0; i < gtk_tree_model_iter_n_children(model, NULL); i++) {
 190                 char *text;
 191                 GtkTreeIter iter;
 192                 gtk_tree_model_iter_nth_child(model, &iter, NULL, i);
 193                 gtk_tree_model_get(model, &iter, 0, &text, -1);
 194                 if (g_str_equal(text, time)) {
 195                         GtkTreePath *path = gtk_tree_model_get_path(model, &iter);
 196                         g_signal_handlers_block_by_func(tview,
 197                                         G_CALLBACK(on_site_changed), self);
 198                         gtk_tree_view_set_cursor(tview, path, NULL, FALSE);
 199                         g_signal_handlers_unblock_by_func(tview,
 200                                         G_CALLBACK(on_site_changed), self);
 201                         gtk_tree_path_free(path);
 202                         g_free(text);
 203                         return;
 204                 }
 205                 g_free(text);
 206         }
 207 }
 208 static void update_site_widget(GisView *view, char *site, AWeatherGui *self)
 209 {
 210         g_debug("AWeatherGui: updat_site_widget - site=%s", site);
 211         GtkComboBox  *combo = GTK_COMBO_BOX(aweather_gui_get_widget(self, "site"));
 212         GtkTreeModel *model = GTK_TREE_MODEL(gtk_combo_box_get_model(combo));
 213         for (int i = 0; i < gtk_tree_model_iter_n_children(model, NULL); i++) {
 214                 GtkTreeIter iter1;
 215                 gtk_tree_model_iter_nth_child(model, &iter1, NULL, i);
 216                 for (int i = 0; i < gtk_tree_model_iter_n_children(model, &iter1); i++) {
 217                         GtkTreeIter iter2;
 218                         gtk_tree_model_iter_nth_child(model, &iter2, &iter1, i);
 219                         char *text;
 220                         gtk_tree_model_get(model, &iter2, 1, &text, -1);
 221                         if (text == NULL)
 222                                 continue;
 223                         if (g_str_equal(text, site)) {
 224                                 g_signal_handlers_block_by_func(combo,
 225                                                 G_CALLBACK(on_site_changed), self);
 226                                 gtk_combo_box_set_active_iter(combo, &iter2);
 227                                 g_signal_handlers_unblock_by_func(combo,
 228                                                 G_CALLBACK(on_site_changed), self);
 229                                 g_free(text);
 230                                 return;
 231                         }
 232                         g_free(text);
 233                 }
 234         }
 235 }
 236
 237 /*****************
 238  * Setup helpers *
 239  *****************/
 240 static void combo_sensitive(GtkCellLayout *cell_layout, GtkCellRenderer *cell,
 241                 GtkTreeModel *tree_model, GtkTreeIter *iter, gpointer data)
 242 {
 243         gboolean sensitive = !gtk_tree_model_iter_has_child(tree_model, iter);
 244         g_object_set(cell, "sensitive", sensitive, NULL);
 245 }
 246
 247 static void site_setup(AWeatherGui *self)
 248 {
 249         GtkTreeIter state, city;
 250         GtkTreeStore *store = GTK_TREE_STORE(aweather_gui_get_object(self, "sites"));
 251         for (int i = 0; cities[i].label; i++) {
 252                 if (cities[i].type == LOCATION_STATE) {
 253                         gtk_tree_store_append(store, &state, NULL);
 254                         gtk_tree_store_set   (store, &state, 0, cities[i].label,
 255                                                              1, cities[i].code,  -1);
 256                 } else {
 257                         gtk_tree_store_append(store, &city, &state);
 258                         gtk_tree_store_set   (store, &city, 0, cities[i].label,
 259                                                             1, cities[i].code,  -1);
 260                 }
 261         }
 262
 263         GtkWidget *combo    = aweather_gui_get_widget(self, "site");
 264         GObject   *renderer = aweather_gui_get_object(self, "site_rend");
 265         gtk_cell_layout_set_cell_data_func(GTK_CELL_LAYOUT(combo),
 266                         GTK_CELL_RENDERER(renderer), combo_sensitive, NULL, NULL);
 267
 268         g_signal_connect(self->view, "site-changed",
 269                         G_CALLBACK(update_site_widget), self);
 270 }
 271
 272 static void time_setup(AWeatherGui *self)
 273 {
 274         GtkTreeView       *tview = GTK_TREE_VIEW(aweather_gui_get_widget(self, "time"));
 275         GtkCellRenderer   *rend  = gtk_cell_renderer_text_new();
 276         GtkTreeViewColumn *col   = gtk_tree_view_column_new_with_attributes(
 277                                         "Time", rend, "text", 0, NULL);
 278
 279         gtk_tree_view_append_column(tview, col);
 280         g_object_set(rend, "size-points", 8.0, NULL);
 281
 282         g_signal_connect(self->view, "time-changed",
 283                         G_CALLBACK(update_time_widget), self);
 284 }
 285
 286
 287
 288 /***********
 289  * Methods *
 290  ***********/
 291 AWeatherGui *aweather_gui_new()
 292 {
 293         g_debug("AWeatherGui: new");
 294         GError *error = NULL;
 295
 296         AWeatherGui *self = g_object_new(AWEATHER_TYPE_GUI, NULL);
 297         self->builder = gtk_builder_new();
 298         if (!gtk_builder_add_from_file(self->builder, DATADIR "/aweather/main.ui", &error))
 299                 g_error("Failed to create gtk builder: %s", error->message);
 300         gtk_widget_reparent(aweather_gui_get_widget(self, "body"), GTK_WIDGET(self));
 301
 302         GtkWidget *drawing = aweather_gui_get_widget(self, "drawing");
 303         g_debug("drawing=%p", drawing);
 304         self->world   = gis_world_new();
 305         self->view    = gis_view_new();
 306         self->opengl  = gis_opengl_new(self->world, self->view, GTK_DRAWING_AREA(drawing));
 307
 308         /* Connect signals */
 309         gtk_builder_connect_signals(self->builder, self);
 310         g_signal_connect(self, "key-press-event",
 311                         G_CALLBACK(on_gui_key_press), self);
 312         g_signal_connect_swapped(self->world, "offline",
 313                         G_CALLBACK(gtk_toggle_action_set_active),
 314                         aweather_gui_get_object(self, "offline"));
 315
 316         /* Load components */
 317         site_setup(self);
 318         time_setup(self);
 319
 320         return self;
 321 }
 322 GisWorld *aweather_gui_get_world(AWeatherGui *self)
 323 {
 324         g_assert(AWEATHER_IS_GUI(self));
 325         return self->world;
 326 }
 327 GisView *aweather_gui_get_view(AWeatherGui *self)
 328 {
 329         g_assert(AWEATHER_IS_GUI(self));
 330         return self->view;
 331 }
 332 GisOpenGL *aweather_gui_get_opengl(AWeatherGui *self)
 333 {
 334         g_assert(AWEATHER_IS_GUI(self));
 335         return self->opengl;
 336 }
 337 GtkBuilder *aweather_gui_get_builder(AWeatherGui *self)
 338 {
 339         g_debug("AWeatherGui: get_builder");
 340         g_assert(AWEATHER_IS_GUI(self));
 341         return self->builder;
 342 }
 343 GtkWidget *aweather_gui_get_widget(AWeatherGui *self, const gchar *name)
 344 {
 345         g_debug("AWeatherGui: get_widget - name=%s", name);
 346         g_assert(AWEATHER_IS_GUI(self));
 347         GObject *widget = gtk_builder_get_object(self->builder, name);
 348         if (!GTK_IS_WIDGET(widget))
 349                 g_error("Failed to get widget `%s'", name);
 350         return GTK_WIDGET(widget);
 351 }
 352 GObject *aweather_gui_get_object(AWeatherGui *self, const gchar *name)
 353 {
 354         g_debug("AWeatherGui: get_widget - name=%s", name);
 355         g_assert(AWEATHER_IS_GUI(self));
 356         return gtk_builder_get_object(self->builder, name);
 357 }
 358 void aweather_gui_register_plugin(AWeatherGui *self, AWeatherPlugin *plugin)
 359 {
 360         g_debug("AWeatherGui: register_plugin");
 361         self->plugins = g_list_append(self->plugins, plugin);
 362 }