Pileus Git - ~andy/gtk/blob - examples/plugman.c

   1 #include <stdlib.h>
   2 #include <gtk/gtk.h>
   3
   4 static void
   5 activate_toggle (GSimpleAction *action,
   6                  GVariant      *parameter,
   7                  gpointer       user_data)
   8 {
   9   GVariant *state;
  10
  11   state = g_action_get_state (G_ACTION (action));
  12   g_action_change_state (G_ACTION (action), g_variant_new_boolean (!g_variant_get_boolean (state)));
  13   g_variant_unref (state);
  14 }
  15
  16 static void
  17 change_fullscreen_state (GSimpleAction *action,
  18                          GVariant      *state,
  19                          gpointer       user_data)
  20 {
  21   if (g_variant_get_boolean (state))
  22     gtk_window_fullscreen (user_data);
  23   else
  24     gtk_window_unfullscreen (user_data);
  25
  26   g_simple_action_set_state (action, state);
  27 }
  28
  29 static GtkClipboard *
  30 get_clipboard (GtkWidget *widget)
  31 {
  32   return gtk_widget_get_clipboard (widget, gdk_atom_intern_static_string ("CLIPBOARD"));
  33 }
  34
  35 static void
  36 window_copy (GSimpleAction *action,
  37              GVariant      *parameter,
  38              gpointer       user_data)
  39 {
  40   GtkWindow *window = GTK_WINDOW (user_data);
  41   GtkTextView *text = g_object_get_data ((GObject*)window, "plugman-text");
  42
  43   gtk_text_buffer_copy_clipboard (gtk_text_view_get_buffer (text),
  44                                   get_clipboard ((GtkWidget*) text));
  45 }
  46
  47 static void
  48 window_paste (GSimpleAction *action,
  49               GVariant      *parameter,
  50               gpointer       user_data)
  51 {
  52   GtkWindow *window = GTK_WINDOW (user_data);
  53   GtkTextView *text = g_object_get_data ((GObject*)window, "plugman-text");
  54
  55   gtk_text_buffer_paste_clipboard (gtk_text_view_get_buffer (text),
  56                                    get_clipboard ((GtkWidget*) text),
  57                                    NULL,
  58                                    TRUE);
  59
  60 }
  61
  62 static GActionEntry win_entries[] = {
  63   { "copy", window_copy, NULL, NULL, NULL },
  64   { "paste", window_paste, NULL, NULL, NULL },
  65   { "fullscreen", activate_toggle, NULL, "false", change_fullscreen_state }
  66 };
  67
  68 static void
  69 new_window (GApplication *app,
  70             GFile        *file)
  71 {
  72   GtkWidget *window, *grid, *scrolled, *view;
  73
  74   window = gtk_application_window_new (GTK_APPLICATION (app));
  75   gtk_window_set_default_size ((GtkWindow*)window, 640, 480);
  76   g_action_map_add_action_entries (G_ACTION_MAP (window), win_entries, G_N_ELEMENTS (win_entries), window);
  77   gtk_window_set_title (GTK_WINDOW (window), "Plugman");
  78
  79   grid = gtk_grid_new ();
  80   gtk_container_add (GTK_CONTAINER (window), grid);
  81
  82   scrolled = gtk_scrolled_window_new (NULL, NULL);
  83   gtk_widget_set_hexpand (scrolled, TRUE);
  84   gtk_widget_set_vexpand (scrolled, TRUE);
  85   view = gtk_text_view_new ();
  86
  87   g_object_set_data ((GObject*)window, "plugman-text", view);
  88
  89   gtk_container_add (GTK_CONTAINER (scrolled), view);
  90
  91   gtk_grid_attach (GTK_GRID (grid), scrolled, 0, 0, 1, 1);
  92
  93   if (file != NULL)
  94     {
  95       gchar *contents;
  96       gsize length;
  97
  98       if (g_file_load_contents (file, NULL, &contents, &length, NULL, NULL))
  99         {
 100           GtkTextBuffer *buffer;
 101
 102           buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (view));
 103           gtk_text_buffer_set_text (buffer, contents, length);
 104           g_free (contents);
 105         }
 106     }
 107
 108   gtk_widget_show_all (GTK_WIDGET (window));
 109 }
 110
 111 static void
 112 plug_man_activate (GApplication *application)
 113 {
 114   new_window (application, NULL);
 115 }
 116
 117 static void
 118 plug_man_open (GApplication  *application,
 119                 GFile        **files,
 120                 gint           n_files,
 121                 const gchar   *hint)
 122 {
 123   gint i;
 124
 125   for (i = 0; i < n_files; i++)
 126     new_window (application, files[i]);
 127 }
 128
 129 typedef GtkApplication PlugMan;
 130 typedef GtkApplicationClass PlugManClass;
 131
 132 G_DEFINE_TYPE (PlugMan, plug_man, GTK_TYPE_APPLICATION)
 133
 134 static void
 135 plug_man_finalize (GObject *object)
 136 {
 137   G_OBJECT_CLASS (plug_man_parent_class)->finalize (object);
 138 }
 139
 140 static void
 141 show_about (GSimpleAction *action,
 142             GVariant      *parameter,
 143             gpointer       user_data)
 144 {
 145   gtk_show_about_dialog (NULL,
 146                          "program-name", "Plugman",
 147                          "title", "About Plugman",
 148                          "comments", "A cheap Bloatpad clone.",
 149                          NULL);
 150 }
 151
 152
 153 static void
 154 quit_app (GSimpleAction *action,
 155           GVariant      *parameter,
 156           gpointer       user_data)
 157 {
 158   GList *list, *next;
 159   GtkWindow *win;
 160
 161   g_print ("Going down...\n");
 162
 163   list = gtk_application_get_windows (GTK_APPLICATION (g_application_get_default ()));
 164   while (list)
 165     {
 166       win = list->data;
 167       next = list->next;
 168
 169       gtk_widget_destroy (GTK_WIDGET (win));
 170
 171       list = next;
 172     }
 173 }
 174
 175 static gboolean is_red_plugin_enabled;
 176
 177 static gboolean
 178 red_plugin_enabled (void)
 179 {
 180   return is_red_plugin_enabled;
 181 }
 182
 183 static GMenuModel *
 184 find_plugin_menu (void)
 185 {
 186   GMenuModel *menubar;
 187   GMenuModel *menu;
 188   gint i, j;
 189   const gchar *label, *id;
 190
 191   menubar = g_application_get_menubar (g_application_get_default ());
 192   for (i = 0; i < g_menu_model_get_n_items (menubar); i++)
 193     {
 194        if (g_menu_model_get_item_attribute (menubar, i, "label", "s", &label) &&
 195            g_strcmp0 (label, "_Edit") == 0)
 196          {
 197             menu = g_menu_model_get_item_link (menubar, i, "submenu");
 198             for (j = 0; j < g_menu_model_get_n_items (menu); j++)
 199               {
 200                 if (g_menu_model_get_item_attribute (menu, j, "id", "s", &id) &&
 201                     g_strcmp0 (id, "plugins") == 0)
 202                   {
 203                     return g_menu_model_get_item_link (menu, j, "section");
 204                   }
 205               }
 206          }
 207     }
 208
 209   return NULL;
 210 }
 211
 212 static void
 213 red_action (GAction  *action,
 214             GVariant *parameter,
 215             gpointer  data)
 216 {
 217   g_print ("Here is where we turn the text red\n");
 218 }
 219
 220 static void
 221 enable_red_plugin (void)
 222 {
 223   GMenu *plugin_menu;
 224   GAction *action;
 225
 226   g_print ("Enabling 'Red' plugin\n");
 227
 228   action = (GAction *)g_simple_action_new ("red-action", NULL);
 229   g_signal_connect (action, "activate", G_CALLBACK (red_action), NULL);
 230   g_action_map_add_action (G_ACTION_MAP (g_application_get_default ()), action);
 231   g_print ("Actions of 'Red' plugin added\n");
 232
 233   plugin_menu = find_plugin_menu ();
 234   if (plugin_menu)
 235     {
 236       GMenu *section;
 237       GMenuItem *item;
 238
 239       section = g_menu_new ();
 240       g_menu_insert (section, 0, "Turn text red", "app.red-action");
 241       item = g_menu_item_new_section (NULL, (GMenuModel*)section);
 242       g_menu_item_set_attribute (item, "id", "s", "red");
 243       g_menu_append_item (plugin_menu, item);
 244       g_object_unref (item);
 245       g_object_unref (section);
 246       g_print ("Menus of 'Red' plugin added\n");
 247     }
 248   else
 249     g_warning ("Plugin menu not found\n");
 250
 251   is_red_plugin_enabled = TRUE;
 252 }
 253
 254 static void
 255 disable_red_plugin (void)
 256 {
 257   GMenuModel *plugin_menu;
 258
 259   g_print ("Disabling 'Red' plugin\n");
 260
 261   g_action_map_remove_action (G_ACTION_MAP (g_application_get_default ()), "app.red-action");
 262
 263   plugin_menu = find_plugin_menu ();
 264   if (plugin_menu)
 265     {
 266       const gchar *id;
 267       gint i;
 268
 269       for (i = 0; i < g_menu_model_get_n_items (plugin_menu); i++)
 270         {
 271            if (g_menu_model_get_item_attribute (plugin_menu, i, "id", "s", &id) &&
 272                g_strcmp0 (id, "red") == 0)
 273              {
 274                g_menu_remove (plugin_menu, i);
 275                g_print ("Menus of 'Red' plugin removed\n");
 276              }
 277         }
 278     }
 279   else
 280     g_warning ("Plugin menu not found\n");
 281
 282   is_red_plugin_enabled = FALSE;
 283 }
 284
 285 static void
 286 enable_or_disable_red_plugin (void)
 287 {
 288   if (red_plugin_enabled ())
 289     disable_red_plugin ();
 290   else
 291     enable_red_plugin ();
 292 }
 293
 294
 295 static void
 296 configure_plugins (GSimpleAction *action,
 297                    GVariant      *parameter,
 298                    gpointer       user_data)
 299 {
 300   GtkBuilder *builder;
 301   GtkWidget *dialog;
 302   GtkWidget *red;
 303   GError *error = NULL;
 304
 305   builder = gtk_builder_new ();
 306   gtk_builder_add_from_string (builder,
 307                                "<interface>"
 308                                "  <object class='GtkDialog' id='plugin-dialog'>"
 309                                "    <property name='border-width'>12</property>"
 310                                "    <property name='title'>Plugins</property>"
 311                                "    <child internal-child='vbox'>"
 312                                "      <object class='GtkBox' id='content-area'>"
 313                                "        <property name='visible'>True</property>"
 314                                "        <child>"
 315                                "          <object class='GtkCheckButton' id='red-plugin'>"
 316                                "            <property name='label'>Red Plugin - turn your text red</property>"
 317                                "            <property name='visible'>True</property>"
 318                                "          </object>"
 319                                "        </child>"
 320                                "      </object>"
 321                                "    </child>"
 322                                "    <child internal-child='action_area'>"
 323                                "      <object class='GtkButtonBox' id='action-area'>"
 324                                "        <property name='visible'>True</property>"
 325                                "        <child>"
 326                                "          <object class='GtkButton' id='close-button'>"
 327                                "            <property name='label'>Close</property>"
 328                                "            <property name='visible'>True</property>"
 329                                "          </object>"
 330                                "        </child>"
 331                                "      </object>"
 332                                "    </child>"
 333                                "    <action-widgets>"
 334                                "      <action-widget response='-5'>close-button</action-widget>"
 335                                "    </action-widgets>"
 336                                "  </object>"
 337                                "</interface>", -1, &error);
 338   if (error)
 339     {
 340       g_warning ("%s", error->message);
 341       g_error_free (error);
 342       return;
 343     }
 344
 345   dialog = (GtkWidget *)gtk_builder_get_object (builder, "plugin-dialog");
 346   red = (GtkWidget *)gtk_builder_get_object (builder, "red-plugin");
 347   gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (red), red_plugin_enabled ());
 348   g_signal_connect (red, "toggled", G_CALLBACK (enable_or_disable_red_plugin), NULL);
 349
 350   g_signal_connect (dialog, "response", G_CALLBACK (gtk_widget_destroy), NULL);
 351
 352   gtk_window_present (GTK_WINDOW (dialog));
 353 }
 354
 355 static GActionEntry app_entries[] = {
 356   { "about", show_about, NULL, NULL, NULL },
 357   { "quit", quit_app, NULL, NULL, NULL },
 358   { "plugins", configure_plugins, NULL, NULL, NULL },
 359 };
 360
 361 static void
 362 plug_man_startup (GApplication *application)
 363 {
 364   GtkBuilder *builder;
 365
 366   G_APPLICATION_CLASS (plug_man_parent_class)
 367     ->startup (application);
 368
 369   g_action_map_add_action_entries (G_ACTION_MAP (application), app_entries, G_N_ELEMENTS (app_entries), application);
 370
 371   builder = gtk_builder_new ();
 372   gtk_builder_add_from_string (builder,
 373                                "<interface>"
 374                                "  <menu id='app-menu'>"
 375                                "    <section>"
 376                                "      <item label='_About Plugman' action='app.about'/>"
 377                                "    </section>"
 378                                "    <section>"
 379                                "      <item label='_Quit' action='app.quit' accel='<Primary>q'/>"
 380                                "    </section>"
 381                                "  </menu>"
 382                                "  <menu id='menubar'>"
 383                                "    <submenu label='_Edit'>"
 384                                "      <section>"
 385                                "        <item label='_Copy' action='win.copy'/>"
 386                                "        <item label='_Paste' action='win.paste'/>"
 387                                "      </section>"
 388                                "      <section id='plugins'>"
 389                                "      </section>"
 390                                "      <section>"
 391                                "        <item label='Plugins' action='app.plugins'/>"
 392                                "      </section>"
 393                                "    </submenu>"
 394                                "    <submenu label='_View'>"
 395                                "      <section>"
 396                                "        <item label='_Fullscreen' action='win.fullscreen'/>"
 397                                "      </section>"
 398                                "    </submenu>"
 399                                "  </menu>"
 400                                "</interface>", -1, NULL);
 401   g_application_set_app_menu (application, G_MENU_MODEL (gtk_builder_get_object (builder, "app-menu")));
 402   g_application_set_menubar (application, G_MENU_MODEL (gtk_builder_get_object (builder, "menubar")));
 403   g_object_unref (builder);
 404 }
 405
 406 static void
 407 plug_man_init (PlugMan *app)
 408 {
 409 }
 410
 411 static void
 412 plug_man_class_init (PlugManClass *class)
 413 {
 414   GApplicationClass *application_class = G_APPLICATION_CLASS (class);
 415   GObjectClass *object_class = G_OBJECT_CLASS (class);
 416
 417   application_class->startup = plug_man_startup;
 418   application_class->activate = plug_man_activate;
 419   application_class->open = plug_man_open;
 420
 421   object_class->finalize = plug_man_finalize;
 422
 423 }
 424
 425 PlugMan *
 426 plug_man_new (void)
 427 {
 428   g_type_init ();
 429
 430   return g_object_new (plug_man_get_type (),
 431                        "application-id", "org.gtk.Test.plugman",
 432                        "flags", G_APPLICATION_HANDLES_OPEN,
 433                        NULL);
 434 }
 435
 436 int
 437 main (int argc, char **argv)
 438 {
 439   PlugMan *plug_man;
 440   int status;
 441
 442   plug_man = plug_man_new ();
 443   gtk_application_add_accelerator (GTK_APPLICATION (plug_man),
 444                                    "F11", "win.fullscreen", NULL);
 445   status = g_application_run (G_APPLICATION (plug_man), argc, argv);
 446   g_object_unref (plug_man);
 447
 448   return status;
 449 }