Dogcows Code - chaz/openbox/blob - openbox/openbox.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    openbox.c for the Openbox window manager
   4    Copyright (c) 2003        Ben Jansens
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    See the COPYING file for a copy of the GNU General Public License.
  17 */
  18
  19 #include "debug.h"
  20 #include "openbox.h"
  21 #include "session.h"
  22 #include "dock.h"
  23 #include "event.h"
  24 #include "menu.h"
  25 #include "client.h"
  26 #include "xerror.h"
  27 #include "prop.h"
  28 #include "screen.h"
  29 #include "startupnotify.h"
  30 #include "focus.h"
  31 #include "moveresize.h"
  32 #include "frame.h"
  33 #include "keyboard.h"
  34 #include "mouse.h"
  35 #include "extensions.h"
  36 #include "menuframe.h"
  37 #include "grab.h"
  38 #include "group.h"
  39 #include "config.h"
  40 #include "mainloop.h"
  41 #include "gettext.h"
  42 #include "parser/parse.h"
  43 #include "render/render.h"
  44 #include "render/theme.h"
  45
  46 #ifdef HAVE_FCNTL_H
  47 #  include <fcntl.h>
  48 #endif
  49 #ifdef HAVE_SIGNAL_H
  50 #  include <signal.h>
  51 #endif
  52 #ifdef HAVE_STDLIB_H
  53 #  include <stdlib.h>
  54 #endif
  55 #ifdef HAVE_LOCALE_H
  56 #  include <locale.h>
  57 #endif
  58 #ifdef HAVE_SYS_STAT_H
  59 #  include <sys/stat.h>
  60 #  include <sys/types.h>
  61 #endif
  62 #ifdef HAVE_UNISTD_H
  63 #  include <unistd.h>
  64 #endif
  65
  66 #include <X11/cursorfont.h>
  67
  68 RrInstance *ob_rr_inst;
  69 RrTheme    *ob_rr_theme;
  70 ObMainLoop *ob_main_loop;
  71 Display    *ob_display;
  72 gint        ob_screen;
  73 gboolean    ob_replace_wm;
  74
  75 static ObState   state;
  76 static gboolean  xsync;
  77 static gboolean  reconfigure;
  78 static gboolean  restart;
  79 static gchar    *restart_path;
  80 static Cursor    cursors[OB_NUM_CURSORS];
  81 static KeyCode   keys[OB_NUM_KEYS];
  82 static gint      exitcode = 0;
  83
  84 static void signal_handler(gint signal, gpointer data);
  85 static void parse_args(gint argc, gchar **argv);
  86
  87 gint main(gint argc, gchar **argv)
  88 {
  89 #ifdef DEBUG
  90     ob_debug_show_output(TRUE);
  91 #endif
  92
  93     state = OB_STATE_STARTING;
  94
  95     /* initialize the locale */
  96     if (!setlocale(LC_ALL, ""))
  97         g_warning("Couldn't set locale from environment.\n");
  98     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
  99     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
 100     textdomain(PACKAGE_NAME);
 101
 102     g_set_prgname(argv[0]);
 103
 104     chdir(g_get_home_dir());
 105
 106     parse_paths_startup();
 107
 108     session_startup(&argc, &argv);
 109
 110     /* parse out command line args */
 111     parse_args(argc, argv);
 112
 113     ob_display = XOpenDisplay(NULL);
 114     if (ob_display == NULL)
 115         ob_exit_with_error("Failed to open the display.");
 116     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
 117         ob_exit_with_error("Failed to set display as close-on-exec.");
 118
 119     ob_main_loop = ob_main_loop_new(ob_display);
 120
 121     /* set up signal handler */
 122     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
 123     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
 124     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
 125     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
 126     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
 127     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
 128
 129     ob_screen = DefaultScreen(ob_display);
 130
 131     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
 132     if (ob_rr_inst == NULL)
 133         ob_exit_with_error("Failed to initialize the render library.");
 134
 135     XSynchronize(ob_display, xsync);
 136
 137     /* check for locale support */
 138     if (!XSupportsLocale())
 139         g_warning("X server does not support locale.");
 140     if (!XSetLocaleModifiers(""))
 141         g_warning("Cannot set locale modifiers for the X server.");
 142
 143     /* set our error handler */
 144     XSetErrorHandler(xerror_handler);
 145
 146     /* set the DISPLAY environment variable for any lauched children, to the
 147        display we're using, so they open in the right place. */
 148     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 149
 150     /* create available cursors */
 151     cursors[OB_CURSOR_NONE] = None;
 152     cursors[OB_CURSOR_POINTER] =
 153         XCreateFontCursor(ob_display, XC_left_ptr);
 154     cursors[OB_CURSOR_BUSY] =
 155         XCreateFontCursor(ob_display, XC_watch);
 156     cursors[OB_CURSOR_MOVE] =
 157         XCreateFontCursor(ob_display, XC_fleur);
 158     cursors[OB_CURSOR_NORTH] =
 159         XCreateFontCursor(ob_display, XC_top_side);
 160     cursors[OB_CURSOR_NORTHEAST] =
 161         XCreateFontCursor(ob_display, XC_top_right_corner);
 162     cursors[OB_CURSOR_EAST] =
 163         XCreateFontCursor(ob_display, XC_right_side);
 164     cursors[OB_CURSOR_SOUTHEAST] =
 165         XCreateFontCursor(ob_display, XC_bottom_right_corner);
 166     cursors[OB_CURSOR_SOUTH] =
 167         XCreateFontCursor(ob_display, XC_bottom_side);
 168     cursors[OB_CURSOR_SOUTHWEST] =
 169         XCreateFontCursor(ob_display, XC_bottom_left_corner);
 170     cursors[OB_CURSOR_WEST] =
 171         XCreateFontCursor(ob_display, XC_left_side);
 172     cursors[OB_CURSOR_NORTHWEST] =
 173         XCreateFontCursor(ob_display, XC_top_left_corner);
 174
 175     /* create available keycodes */
 176     keys[OB_KEY_RETURN] =
 177         XKeysymToKeycode(ob_display, XStringToKeysym("Return"));
 178     keys[OB_KEY_ESCAPE] =
 179         XKeysymToKeycode(ob_display, XStringToKeysym("Escape"));
 180     keys[OB_KEY_LEFT] =
 181         XKeysymToKeycode(ob_display, XStringToKeysym("Left"));
 182     keys[OB_KEY_RIGHT] =
 183         XKeysymToKeycode(ob_display, XStringToKeysym("Right"));
 184     keys[OB_KEY_UP] =
 185         XKeysymToKeycode(ob_display, XStringToKeysym("Up"));
 186     keys[OB_KEY_DOWN] =
 187         XKeysymToKeycode(ob_display, XStringToKeysym("Down"));
 188
 189     prop_startup(); /* get atoms values for the display */
 190     extensions_query_all(); /* find which extensions are present */
 191
 192     if (screen_annex()) { /* it will be ours! */
 193         do {
 194             {
 195                 ObParseInst *i;
 196                 xmlDocPtr doc;
 197                 xmlNodePtr node;
 198
 199                 /* startup the parsing so everything can register sections
 200                    of the rc */
 201                 i = parse_startup();
 202
 203                 config_startup(i);
 204                 /* parse/load user options */
 205                 if (parse_load_rc(&doc, &node))
 206                     parse_tree(i, doc, node->xmlChildrenNode);
 207                 /* we're done with parsing now, kill it */
 208                 parse_close(doc);
 209                 parse_shutdown(i);
 210             }
 211
 212             /* load the theme specified in the rc file */
 213             {
 214                 RrTheme *theme;
 215                 if ((theme = RrThemeNew(ob_rr_inst, config_theme))) {
 216                     RrThemeFree(ob_rr_theme);
 217                     ob_rr_theme = theme;
 218                 }
 219                 if (ob_rr_theme == NULL)
 220                     ob_exit_with_error("Unable to load a theme.");
 221             }
 222
 223             if (reconfigure) {
 224                 GList *it;
 225
 226                 /* update all existing windows for the new theme */
 227                 for (it = client_list; it; it = g_list_next(it)) {
 228                     ObClient *c = it->data;
 229                     frame_adjust_theme(c->frame);
 230                 }
 231             }
 232             event_startup(reconfigure);
 233             /* focus_backup is used for stacking, so this needs to come before
 234                anything that calls stacking_add */
 235             focus_startup(reconfigure);
 236             window_startup(reconfigure);
 237             sn_startup(reconfigure);
 238             screen_startup(reconfigure);
 239             grab_startup(reconfigure);
 240             group_startup(reconfigure);
 241             client_startup(reconfigure);
 242             dock_startup(reconfigure);
 243             moveresize_startup(reconfigure);
 244             keyboard_startup(reconfigure);
 245             mouse_startup(reconfigure);
 246             menu_startup(reconfigure);
 247
 248             if (!reconfigure) {
 249                 /* get all the existing windows */
 250                 client_manage_all();
 251                 focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 252             } else {
 253                 GList *it;
 254
 255                 /* redecorate all existing windows */
 256                 for (it = client_list; it; it = g_list_next(it)) {
 257                     ObClient *c = it->data;
 258                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
 259                 }
 260             }
 261
 262             reconfigure = FALSE;
 263
 264             state = OB_STATE_RUNNING;
 265             ob_main_loop_run(ob_main_loop);
 266             state = OB_STATE_EXITING;
 267
 268             if (!reconfigure) {
 269                 dock_remove_all();
 270                 client_unmanage_all();
 271             }
 272
 273             menu_shutdown(reconfigure);
 274             mouse_shutdown(reconfigure);
 275             keyboard_shutdown(reconfigure);
 276             moveresize_shutdown(reconfigure);
 277             dock_shutdown(reconfigure);
 278             client_shutdown(reconfigure);
 279             group_shutdown(reconfigure);
 280             grab_shutdown(reconfigure);
 281             screen_shutdown(reconfigure);
 282             focus_shutdown(reconfigure);
 283             sn_shutdown(reconfigure);
 284             window_shutdown(reconfigure);
 285             event_shutdown(reconfigure);
 286             config_shutdown();
 287         } while (reconfigure);
 288     }
 289
 290     XSync(ob_display, FALSE);
 291
 292     RrThemeFree(ob_rr_theme);
 293     RrInstanceFree(ob_rr_inst);
 294
 295     session_shutdown();
 296
 297     XCloseDisplay(ob_display);
 298
 299     parse_paths_shutdown();
 300
 301     if (restart) {
 302         if (restart_path != NULL) {
 303             gint argcp;
 304             gchar **argvp;
 305             GError *err = NULL;
 306
 307             /* run other shit */
 308             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
 309                 execvp(argvp[0], argvp);
 310                 g_strfreev(argvp);
 311             } else {
 312                 g_warning("failed to execute '%s': %s", restart_path,
 313                           err->message);
 314             }
 315         }
 316
 317         /* re-run me */
 318         execvp(argv[0], argv); /* try how we were run */
 319         execlp(argv[0], g_path_get_basename(argv[0])); /* last resort */
 320     }
 321
 322     return exitcode;
 323 }
 324
 325 static void signal_handler(gint signal, gpointer data)
 326 {
 327     if (signal == SIGUSR1) {
 328         ob_debug("Caught signal %d. Restarting.\n", signal);
 329         ob_restart();
 330     } else if (signal == SIGUSR2) {
 331         ob_debug("Caught signal %d. Reconfiguring.\n", signal);
 332         ob_reconfigure();
 333     } else {
 334         ob_debug("Caught signal %d. Exiting.\n", signal);
 335         /* TERM and INT return a 0 code */
 336         ob_exit(!(signal == SIGTERM || signal == SIGINT));
 337     }
 338 }
 339
 340 static void print_version()
 341 {
 342     g_print("Openbox %s\n", PACKAGE_VERSION);
 343         g_print("Copyright (c) 2003 Ben Jansens, and others\n\n");
 344     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 345     g_print("This is free software, and you are welcome to redistribute it\n");
 346     g_print("under certain conditions. See the file COPYING for details.\n\n");
 347 }
 348
 349 static void print_help()
 350 {
 351     g_print("Syntax: openbox [options]\n\n");
 352     g_print("Options:\n\n");
 353 #ifdef USE_SM
 354     g_print("  --sm-disable        Disable connection to session manager\n");
 355     g_print("  --sm-client-id ID   Specify session management ID\n");
 356     g_print("  --sm-save-file FILE Specify file to load a saved session"
 357             "from\n");
 358 #endif
 359     g_print("  --replace           Replace the currently running window "
 360             "manager\n");
 361     g_print("  --help              Display this help and exit\n");
 362     g_print("  --version           Display the version and exit\n");
 363     g_print("  --sync              Run in synchronous mode (this is slow and "
 364             "meant for\n"
 365                         "                      debugging X routines)\n");
 366     g_print("  --debug             Display debugging output\n");
 367     g_print("\nPlease report bugs at %s\n\n", PACKAGE_BUGREPORT);
 368 }
 369
 370 static void parse_args(gint argc, gchar **argv)
 371 {
 372     gint i;
 373
 374     for (i = 1; i < argc; ++i) {
 375         if (!strcmp(argv[i], "--version")) {
 376             print_version();
 377             exit(0);
 378         } else if (!strcmp(argv[i], "--help")) {
 379             print_help();
 380             exit(0);
 381         } else if (!strcmp(argv[i], "--g-fatal-warnings")) {
 382             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
 383         } else if (!strcmp(argv[i], "--replace")) {
 384             ob_replace_wm = TRUE;
 385         } else if (!strcmp(argv[i], "--sync")) {
 386             xsync = TRUE;
 387         } else if (!strcmp(argv[i], "--debug")) {
 388             ob_debug_show_output(TRUE);
 389         } else {
 390             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 391             print_help();
 392             exit(1);
 393         }
 394     }
 395 }
 396
 397 void ob_exit_with_error(gchar *msg)
 398 {
 399     g_critical(msg);
 400     session_shutdown();
 401     exit(EXIT_FAILURE);
 402 }
 403
 404 void ob_restart_other(const gchar *path)
 405 {
 406     restart_path = g_strdup(path);
 407     ob_restart();
 408 }
 409
 410 void ob_restart()
 411 {
 412     restart = TRUE;
 413     ob_exit(0);
 414 }
 415
 416 void ob_reconfigure()
 417 {
 418     reconfigure = TRUE;
 419     ob_exit(0);
 420 }
 421
 422 void ob_exit(gint code)
 423 {
 424     exitcode = code;
 425     ob_main_loop_exit(ob_main_loop);
 426 }
 427
 428 Cursor ob_cursor(ObCursor cursor)
 429 {
 430     g_assert(cursor < OB_NUM_CURSORS);
 431     return cursors[cursor];
 432 }
 433
 434 KeyCode ob_keycode(ObKey key)
 435 {
 436     g_assert(key < OB_NUM_KEYS);
 437     return keys[key];
 438 }
 439
 440 ObState ob_state()
 441 {
 442     return state;
 443 }