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_SYS_WAIT_H
  63 #  include <sys/types.h>
  64 #  include <sys/wait.h>
  65 #endif
  66 #ifdef HAVE_UNISTD_H
  67 #  include <unistd.h>
  68 #endif
  69 #include <errno.h>
  70
  71 #include <X11/cursorfont.h>
  72
  73 RrInstance *ob_rr_inst;
  74 RrTheme    *ob_rr_theme;
  75 ObMainLoop *ob_main_loop;
  76 Display    *ob_display;
  77 gint        ob_screen;
  78 gboolean    ob_replace_wm;
  79
  80 static ObState   state;
  81 static gboolean  xsync;
  82 static gboolean  reconfigure;
  83 static gboolean  restart;
  84 static gchar    *restart_path;
  85 static Cursor    cursors[OB_NUM_CURSORS];
  86 static KeyCode   keys[OB_NUM_KEYS];
  87 static gint      exitcode = 0;
  88
  89 static void signal_handler(gint signal, gpointer data);
  90 static void parse_args(gint argc, gchar **argv);
  91
  92 gint main(gint argc, gchar **argv)
  93 {
  94 #ifdef DEBUG
  95     ob_debug_show_output(TRUE);
  96 #endif
  97
  98     state = OB_STATE_STARTING;
  99
 100     /* initialize the locale */
 101     if (!setlocale(LC_ALL, ""))
 102         g_warning("Couldn't set locale from environment.\n");
 103     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
 104     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
 105     textdomain(PACKAGE_NAME);
 106
 107     g_set_prgname(argv[0]);
 108
 109     if (chdir(g_get_home_dir()) == -1)
 110         g_warning("Unable to change to home directory (%s): %s",
 111                   g_get_home_dir(), g_strerror(errno));
 112
 113     parse_paths_startup();
 114
 115     session_startup(&argc, &argv);
 116
 117     /* parse out command line args */
 118     parse_args(argc, argv);
 119
 120     ob_display = XOpenDisplay(NULL);
 121     if (ob_display == NULL)
 122         ob_exit_with_error("Failed to open the display.");
 123     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
 124         ob_exit_with_error("Failed to set display as close-on-exec.");
 125
 126     ob_main_loop = ob_main_loop_new(ob_display);
 127
 128     /* set up signal handler */
 129     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
 130     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
 131     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
 132     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
 133     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
 134     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
 135     ob_main_loop_signal_add(ob_main_loop, SIGCHLD, signal_handler, NULL, NULL);
 136
 137     ob_screen = DefaultScreen(ob_display);
 138
 139     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
 140     if (ob_rr_inst == NULL)
 141         ob_exit_with_error("Failed to initialize the render library.");
 142
 143     XSynchronize(ob_display, xsync);
 144
 145     /* check for locale support */
 146     if (!XSupportsLocale())
 147         g_warning("X server does not support locale.");
 148     if (!XSetLocaleModifiers(""))
 149         g_warning("Cannot set locale modifiers for the X server.");
 150
 151     /* set our error handler */
 152     XSetErrorHandler(xerror_handler);
 153
 154     /* set the DISPLAY environment variable for any lauched children, to the
 155        display we're using, so they open in the right place. */
 156     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 157
 158     /* create available cursors */
 159     cursors[OB_CURSOR_NONE] = None;
 160     cursors[OB_CURSOR_POINTER] =
 161         XCreateFontCursor(ob_display, XC_left_ptr);
 162     cursors[OB_CURSOR_BUSY] =
 163         XCreateFontCursor(ob_display, XC_watch);
 164     cursors[OB_CURSOR_MOVE] =
 165         XCreateFontCursor(ob_display, XC_fleur);
 166     cursors[OB_CURSOR_NORTH] =
 167         XCreateFontCursor(ob_display, XC_top_side);
 168     cursors[OB_CURSOR_NORTHEAST] =
 169         XCreateFontCursor(ob_display, XC_top_right_corner);
 170     cursors[OB_CURSOR_EAST] =
 171         XCreateFontCursor(ob_display, XC_right_side);
 172     cursors[OB_CURSOR_SOUTHEAST] =
 173         XCreateFontCursor(ob_display, XC_bottom_right_corner);
 174     cursors[OB_CURSOR_SOUTH] =
 175         XCreateFontCursor(ob_display, XC_bottom_side);
 176     cursors[OB_CURSOR_SOUTHWEST] =
 177         XCreateFontCursor(ob_display, XC_bottom_left_corner);
 178     cursors[OB_CURSOR_WEST] =
 179         XCreateFontCursor(ob_display, XC_left_side);
 180     cursors[OB_CURSOR_NORTHWEST] =
 181         XCreateFontCursor(ob_display, XC_top_left_corner);
 182
 183     /* create available keycodes */
 184     keys[OB_KEY_RETURN] =
 185         XKeysymToKeycode(ob_display, XStringToKeysym("Return"));
 186     keys[OB_KEY_ESCAPE] =
 187         XKeysymToKeycode(ob_display, XStringToKeysym("Escape"));
 188     keys[OB_KEY_LEFT] =
 189         XKeysymToKeycode(ob_display, XStringToKeysym("Left"));
 190     keys[OB_KEY_RIGHT] =
 191         XKeysymToKeycode(ob_display, XStringToKeysym("Right"));
 192     keys[OB_KEY_UP] =
 193         XKeysymToKeycode(ob_display, XStringToKeysym("Up"));
 194     keys[OB_KEY_DOWN] =
 195         XKeysymToKeycode(ob_display, XStringToKeysym("Down"));
 196
 197     prop_startup(); /* get atoms values for the display */
 198     extensions_query_all(); /* find which extensions are present */
 199
 200     if (screen_annex()) { /* it will be ours! */
 201         do {
 202             {
 203                 ObParseInst *i;
 204                 xmlDocPtr doc;
 205                 xmlNodePtr node;
 206
 207                 /* startup the parsing so everything can register sections
 208                    of the rc */
 209                 i = parse_startup();
 210
 211                 config_startup(i);
 212                 /* parse/load user options */
 213                 if (parse_load_rc(&doc, &node))
 214                     parse_tree(i, doc, node->xmlChildrenNode);
 215                 /* we're done with parsing now, kill it */
 216                 parse_close(doc);
 217                 parse_shutdown(i);
 218             }
 219
 220             /* load the theme specified in the rc file */
 221             {
 222                 RrTheme *theme;
 223                 if ((theme = RrThemeNew(ob_rr_inst, config_theme))) {
 224                     RrThemeFree(ob_rr_theme);
 225                     ob_rr_theme = theme;
 226                 }
 227                 if (ob_rr_theme == NULL)
 228                     ob_exit_with_error("Unable to load a theme.");
 229             }
 230
 231             if (reconfigure) {
 232                 GList *it;
 233
 234                 /* update all existing windows for the new theme */
 235                 for (it = client_list; it; it = g_list_next(it)) {
 236                     ObClient *c = it->data;
 237                     frame_adjust_theme(c->frame);
 238                 }
 239             }
 240             event_startup(reconfigure);
 241             /* focus_backup is used for stacking, so this needs to come before
 242                anything that calls stacking_add */
 243             focus_startup(reconfigure);
 244             window_startup(reconfigure);
 245             sn_startup(reconfigure);
 246             screen_startup(reconfigure);
 247             grab_startup(reconfigure);
 248             group_startup(reconfigure);
 249             client_startup(reconfigure);
 250             dock_startup(reconfigure);
 251             moveresize_startup(reconfigure);
 252             keyboard_startup(reconfigure);
 253             mouse_startup(reconfigure);
 254             menu_startup(reconfigure);
 255
 256             if (!reconfigure) {
 257                 /* get all the existing windows */
 258                 client_manage_all();
 259                 focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 260             } else {
 261                 GList *it;
 262
 263                 /* redecorate all existing windows */
 264                 for (it = client_list; it; it = g_list_next(it)) {
 265                     ObClient *c = it->data;
 266                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
 267                 }
 268             }
 269
 270             reconfigure = FALSE;
 271
 272             state = OB_STATE_RUNNING;
 273             ob_main_loop_run(ob_main_loop);
 274             state = OB_STATE_EXITING;
 275
 276             if (!reconfigure) {
 277                 dock_remove_all();
 278                 client_unmanage_all();
 279             }
 280
 281             menu_shutdown(reconfigure);
 282             mouse_shutdown(reconfigure);
 283             keyboard_shutdown(reconfigure);
 284             moveresize_shutdown(reconfigure);
 285             dock_shutdown(reconfigure);
 286             client_shutdown(reconfigure);
 287             group_shutdown(reconfigure);
 288             grab_shutdown(reconfigure);
 289             screen_shutdown(reconfigure);
 290             focus_shutdown(reconfigure);
 291             sn_shutdown(reconfigure);
 292             window_shutdown(reconfigure);
 293             event_shutdown(reconfigure);
 294             config_shutdown();
 295         } while (reconfigure);
 296     }
 297
 298     XSync(ob_display, FALSE);
 299
 300     RrThemeFree(ob_rr_theme);
 301     RrInstanceFree(ob_rr_inst);
 302
 303     session_shutdown();
 304
 305     XCloseDisplay(ob_display);
 306
 307     parse_paths_shutdown();
 308
 309     if (restart) {
 310         if (restart_path != NULL) {
 311             gint argcp;
 312             gchar **argvp;
 313             GError *err = NULL;
 314
 315             /* run other window manager */
 316             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
 317                 execvp(argvp[0], argvp);
 318                 g_strfreev(argvp);
 319             } else {
 320                 g_warning("failed to execute '%s': %s", restart_path,
 321                           err->message);
 322                 g_error_free(err);
 323             }
 324         }
 325
 326         /* re-run me */
 327         execvp(argv[0], argv); /* try how we were run */
 328         execlp(argv[0], g_path_get_basename(argv[0])); /* last resort */
 329     }
 330
 331     return exitcode;
 332 }
 333
 334 static void signal_handler(gint signal, gpointer data)
 335 {
 336     switch (signal) {
 337     case SIGUSR1:
 338         ob_debug("Caught signal %d. Restarting.\n", signal);
 339         ob_restart();
 340         break;
 341     case SIGUSR2:
 342         ob_debug("Caught signal %d. Reconfiguring.\n", signal);
 343         ob_reconfigure();
 344         break;
 345     case SIGCHLD:
 346         /* reap children */
 347         while (waitpid(-1, NULL, WNOHANG) > 0);
 348         break;
 349     default:
 350         ob_debug("Caught signal %d. Exiting.\n", signal);
 351         /* TERM and INT return a 0 code */
 352         ob_exit(!(signal == SIGTERM || signal == SIGINT));
 353     }
 354 }
 355
 356 static void print_version()
 357 {
 358     g_print("Openbox %s\n", PACKAGE_VERSION);
 359     g_print("Copyright (c) 2003 Ben Jansens, and others\n\n");
 360     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 361     g_print("This is free software, and you are welcome to redistribute it\n");
 362     g_print("under certain conditions. See the file COPYING for details.\n\n");
 363 }
 364
 365 static void print_help()
 366 {
 367     g_print("Syntax: openbox [options]\n\n");
 368     g_print("Options:\n\n");
 369 #ifdef USE_SM
 370     g_print("  --sm-disable        Disable connection to session manager\n");
 371     g_print("  --sm-client-id ID   Specify session management ID\n");
 372     g_print("  --sm-save-file FILE Specify file to load a saved session"
 373             "from\n");
 374 #endif
 375     g_print("  --replace           Replace the currently running window "
 376             "manager\n");
 377     g_print("  --help              Display this help and exit\n");
 378     g_print("  --version           Display the version and exit\n");
 379     g_print("  --sync              Run in synchronous mode (this is slow and "
 380             "meant for\n"
 381             "                      debugging X routines)\n");
 382     g_print("  --debug             Display debugging output\n");
 383     g_print("\nPlease report bugs at %s\n\n", PACKAGE_BUGREPORT);
 384 }
 385
 386 static void parse_args(gint argc, gchar **argv)
 387 {
 388     gint i;
 389
 390     for (i = 1; i < argc; ++i) {
 391         if (!strcmp(argv[i], "--version")) {
 392             print_version();
 393             exit(0);
 394         } else if (!strcmp(argv[i], "--help")) {
 395             print_help();
 396             exit(0);
 397         } else if (!strcmp(argv[i], "--g-fatal-warnings")) {
 398             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
 399         } else if (!strcmp(argv[i], "--replace")) {
 400             ob_replace_wm = TRUE;
 401         } else if (!strcmp(argv[i], "--sync")) {
 402             xsync = TRUE;
 403         } else if (!strcmp(argv[i], "--debug")) {
 404             ob_debug_show_output(TRUE);
 405         } else {
 406             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 407             print_help();
 408             exit(1);
 409         }
 410     }
 411 }
 412
 413 void ob_exit_with_error(gchar *msg)
 414 {
 415     g_critical(msg);
 416     session_shutdown();
 417     exit(EXIT_FAILURE);
 418 }
 419
 420 void ob_restart_other(const gchar *path)
 421 {
 422     restart_path = g_strdup(path);
 423     ob_restart();
 424 }
 425
 426 void ob_restart()
 427 {
 428     restart = TRUE;
 429     ob_exit(0);
 430 }
 431
 432 void ob_reconfigure()
 433 {
 434     reconfigure = TRUE;
 435     ob_exit(0);
 436 }
 437
 438 void ob_exit(gint code)
 439 {
 440     exitcode = code;
 441     ob_main_loop_exit(ob_main_loop);
 442 }
 443
 444 Cursor ob_cursor(ObCursor cursor)
 445 {
 446     g_assert(cursor < OB_NUM_CURSORS);
 447     return cursors[cursor];
 448 }
 449
 450 KeyCode ob_keycode(ObKey key)
 451 {
 452     g_assert(key < OB_NUM_KEYS);
 453     return keys[key];
 454 }
 455
 456 ObState ob_state()
 457 {
 458     return state;
 459 }