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) 2004        Mikael Magnusson
   5    Copyright (c) 2003        Ben Jansens
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    See the COPYING file for a copy of the GNU General Public License.
  18 */
  19
  20 #include "debug.h"
  21 #include "openbox.h"
  22 #include "session.h"
  23 #include "dock.h"
  24 #include "event.h"
  25 #include "menu.h"
  26 #include "client.h"
  27 #include "xerror.h"
  28 #include "prop.h"
  29 #include "screen.h"
  30 #include "startupnotify.h"
  31 #include "focus.h"
  32 #include "moveresize.h"
  33 #include "frame.h"
  34 #include "keyboard.h"
  35 #include "mouse.h"
  36 #include "extensions.h"
  37 #include "menuframe.h"
  38 #include "grab.h"
  39 #include "group.h"
  40 #include "config.h"
  41 #include "mainloop.h"
  42 #include "gettext.h"
  43 #include "parser/parse.h"
  44 #include "render/render.h"
  45 #include "render/theme.h"
  46
  47 #ifdef HAVE_FCNTL_H
  48 #  include <fcntl.h>
  49 #endif
  50 #ifdef HAVE_SIGNAL_H
  51 #  include <signal.h>
  52 #endif
  53 #ifdef HAVE_STDLIB_H
  54 #  include <stdlib.h>
  55 #endif
  56 #ifdef HAVE_LOCALE_H
  57 #  include <locale.h>
  58 #endif
  59 #ifdef HAVE_SYS_STAT_H
  60 #  include <sys/stat.h>
  61 #  include <sys/types.h>
  62 #endif
  63 #ifdef HAVE_SYS_WAIT_H
  64 #  include <sys/types.h>
  65 #  include <sys/wait.h>
  66 #endif
  67 #ifdef HAVE_UNISTD_H
  68 #  include <unistd.h>
  69 #endif
  70 #include <errno.h>
  71
  72 #include <X11/cursorfont.h>
  73
  74 RrInstance *ob_rr_inst;
  75 RrTheme    *ob_rr_theme;
  76 ObMainLoop *ob_main_loop;
  77 Display    *ob_display;
  78 gint        ob_screen;
  79 gboolean    ob_replace_wm;
  80
  81 static ObState   state;
  82 static gboolean  xsync;
  83 static gboolean  reconfigure;
  84 static gboolean  restart;
  85 static gchar    *restart_path;
  86 static Cursor    cursors[OB_NUM_CURSORS];
  87 static KeyCode   keys[OB_NUM_KEYS];
  88 static gint      exitcode = 0;
  89
  90 static void signal_handler(gint signal, gpointer data);
  91 static void parse_args(gint argc, gchar **argv);
  92
  93 gint main(gint argc, gchar **argv)
  94 {
  95 #ifdef DEBUG
  96     ob_debug_show_output(TRUE);
  97 #endif
  98
  99     state = OB_STATE_STARTING;
 100
 101     /* initialize the locale */
 102     if (!setlocale(LC_ALL, ""))
 103         g_warning("Couldn't set locale from environment.\n");
 104     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
 105     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
 106     textdomain(PACKAGE_NAME);
 107
 108     g_set_prgname(argv[0]);
 109
 110     if (chdir(g_get_home_dir()) == -1)
 111         g_warning("Unable to change to home directory (%s): %s",
 112                   g_get_home_dir(), g_strerror(errno));
 113
 114     parse_paths_startup();
 115
 116     session_startup(&argc, &argv);
 117
 118     /* parse out command line args */
 119     parse_args(argc, argv);
 120
 121     ob_display = XOpenDisplay(NULL);
 122     if (ob_display == NULL)
 123         ob_exit_with_error("Failed to open the display.");
 124     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
 125         ob_exit_with_error("Failed to set display as close-on-exec.");
 126
 127     ob_main_loop = ob_main_loop_new(ob_display);
 128
 129     /* set up signal handler */
 130     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
 131     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
 132     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
 133     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
 134     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
 135     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
 136     ob_main_loop_signal_add(ob_main_loop, SIGCHLD, signal_handler, NULL, NULL);
 137
 138     ob_screen = DefaultScreen(ob_display);
 139
 140     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
 141     if (ob_rr_inst == NULL)
 142         ob_exit_with_error("Failed to initialize the render library.");
 143
 144     XSynchronize(ob_display, xsync);
 145
 146     /* check for locale support */
 147     if (!XSupportsLocale())
 148         g_warning("X server does not support locale.");
 149     if (!XSetLocaleModifiers(""))
 150         g_warning("Cannot set locale modifiers for the X server.");
 151
 152     /* set our error handler */
 153     XSetErrorHandler(xerror_handler);
 154
 155     /* set the DISPLAY environment variable for any lauched children, to the
 156        display we're using, so they open in the right place. */
 157     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
 158
 159     /* create available cursors */
 160     cursors[OB_CURSOR_NONE] = None;
 161     cursors[OB_CURSOR_POINTER] =
 162         XCreateFontCursor(ob_display, XC_left_ptr);
 163     cursors[OB_CURSOR_BUSY] =
 164         XCreateFontCursor(ob_display, XC_watch);
 165     cursors[OB_CURSOR_MOVE] =
 166         XCreateFontCursor(ob_display, XC_fleur);
 167     cursors[OB_CURSOR_NORTH] =
 168         XCreateFontCursor(ob_display, XC_top_side);
 169     cursors[OB_CURSOR_NORTHEAST] =
 170         XCreateFontCursor(ob_display, XC_top_right_corner);
 171     cursors[OB_CURSOR_EAST] =
 172         XCreateFontCursor(ob_display, XC_right_side);
 173     cursors[OB_CURSOR_SOUTHEAST] =
 174         XCreateFontCursor(ob_display, XC_bottom_right_corner);
 175     cursors[OB_CURSOR_SOUTH] =
 176         XCreateFontCursor(ob_display, XC_bottom_side);
 177     cursors[OB_CURSOR_SOUTHWEST] =
 178         XCreateFontCursor(ob_display, XC_bottom_left_corner);
 179     cursors[OB_CURSOR_WEST] =
 180         XCreateFontCursor(ob_display, XC_left_side);
 181     cursors[OB_CURSOR_NORTHWEST] =
 182         XCreateFontCursor(ob_display, XC_top_left_corner);
 183
 184     /* create available keycodes */
 185     keys[OB_KEY_RETURN] =
 186         XKeysymToKeycode(ob_display, XStringToKeysym("Return"));
 187     keys[OB_KEY_ESCAPE] =
 188         XKeysymToKeycode(ob_display, XStringToKeysym("Escape"));
 189     keys[OB_KEY_LEFT] =
 190         XKeysymToKeycode(ob_display, XStringToKeysym("Left"));
 191     keys[OB_KEY_RIGHT] =
 192         XKeysymToKeycode(ob_display, XStringToKeysym("Right"));
 193     keys[OB_KEY_UP] =
 194         XKeysymToKeycode(ob_display, XStringToKeysym("Up"));
 195     keys[OB_KEY_DOWN] =
 196         XKeysymToKeycode(ob_display, XStringToKeysym("Down"));
 197
 198     prop_startup(); /* get atoms values for the display */
 199     extensions_query_all(); /* find which extensions are present */
 200
 201     if (screen_annex()) { /* it will be ours! */
 202         do {
 203             {
 204                 ObParseInst *i;
 205                 xmlDocPtr doc;
 206                 xmlNodePtr node;
 207
 208                 /* startup the parsing so everything can register sections
 209                    of the rc */
 210                 i = parse_startup();
 211
 212                 config_startup(i);
 213                 /* parse/load user options */
 214                 if (parse_load_rc(&doc, &node))
 215                     parse_tree(i, doc, node->xmlChildrenNode);
 216                 /* we're done with parsing now, kill it */
 217                 parse_close(doc);
 218                 parse_shutdown(i);
 219             }
 220
 221             /* load the theme specified in the rc file */
 222             {
 223                 RrTheme *theme;
 224                 if ((theme = RrThemeNew(ob_rr_inst, config_theme))) {
 225                     RrThemeFree(ob_rr_theme);
 226                     ob_rr_theme = theme;
 227                 }
 228                 if (ob_rr_theme == NULL)
 229                     ob_exit_with_error("Unable to load a theme.");
 230             }
 231
 232             if (reconfigure) {
 233                 GList *it;
 234
 235                 /* update all existing windows for the new theme */
 236                 for (it = client_list; it; it = g_list_next(it)) {
 237                     ObClient *c = it->data;
 238                     frame_adjust_theme(c->frame);
 239                 }
 240             }
 241             event_startup(reconfigure);
 242             /* focus_backup is used for stacking, so this needs to come before
 243                anything that calls stacking_add */
 244             focus_startup(reconfigure);
 245             window_startup(reconfigure);
 246             sn_startup(reconfigure);
 247             screen_startup(reconfigure);
 248             grab_startup(reconfigure);
 249             group_startup(reconfigure);
 250             client_startup(reconfigure);
 251             frame_startup(reconfigure);
 252             dock_startup(reconfigure);
 253             moveresize_startup(reconfigure);
 254             keyboard_startup(reconfigure);
 255             mouse_startup(reconfigure);
 256             menu_startup(reconfigure);
 257
 258             if (!reconfigure) {
 259                 /* get all the existing windows */
 260                 client_manage_all();
 261                 focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 262             } else {
 263                 GList *it;
 264
 265                 /* redecorate all existing windows */
 266                 for (it = client_list; it; it = g_list_next(it)) {
 267                     ObClient *c = it->data;
 268                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
 269                 }
 270             }
 271
 272             reconfigure = FALSE;
 273
 274             state = OB_STATE_RUNNING;
 275             ob_main_loop_run(ob_main_loop);
 276             state = OB_STATE_EXITING;
 277
 278             if (!reconfigure) {
 279                 dock_remove_all();
 280                 client_unmanage_all();
 281             }
 282
 283             menu_shutdown(reconfigure);
 284             mouse_shutdown(reconfigure);
 285             keyboard_shutdown(reconfigure);
 286             moveresize_shutdown(reconfigure);
 287             dock_shutdown(reconfigure);
 288             frame_shutdown(reconfigure);
 289             client_shutdown(reconfigure);
 290             group_shutdown(reconfigure);
 291             grab_shutdown(reconfigure);
 292             screen_shutdown(reconfigure);
 293             focus_shutdown(reconfigure);
 294             sn_shutdown(reconfigure);
 295             window_shutdown(reconfigure);
 296             event_shutdown(reconfigure);
 297             config_shutdown();
 298         } while (reconfigure);
 299     }
 300
 301     XSync(ob_display, FALSE);
 302
 303     RrThemeFree(ob_rr_theme);
 304     RrInstanceFree(ob_rr_inst);
 305
 306     session_shutdown();
 307
 308     XCloseDisplay(ob_display);
 309
 310     parse_paths_shutdown();
 311
 312     if (restart) {
 313         if (restart_path != NULL) {
 314             gint argcp;
 315             gchar **argvp;
 316             GError *err = NULL;
 317
 318             /* run other window manager */
 319             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
 320                 execvp(argvp[0], argvp);
 321                 g_strfreev(argvp);
 322             } else {
 323                 g_warning("failed to execute '%s': %s", restart_path,
 324                           err->message);
 325                 g_error_free(err);
 326             }
 327         }
 328
 329         /* re-run me */
 330         execvp(argv[0], argv); /* try how we were run */
 331         execlp(argv[0], g_path_get_basename(argv[0]),
 332                (char *)NULL); /* last resort */
 333     }
 334
 335     return exitcode;
 336 }
 337
 338 static void signal_handler(gint signal, gpointer data)
 339 {
 340     switch (signal) {
 341     case SIGUSR1:
 342         ob_debug("Caught signal %d. Restarting.\n", signal);
 343         ob_restart();
 344         break;
 345     case SIGUSR2:
 346         ob_debug("Caught signal %d. Reconfiguring.\n", signal);
 347         ob_reconfigure();
 348         break;
 349     case SIGCHLD:
 350         /* reap children */
 351         while (waitpid(-1, NULL, WNOHANG) > 0);
 352         break;
 353     default:
 354         ob_debug("Caught signal %d. Exiting.\n", signal);
 355         /* TERM and INT return a 0 code */
 356         ob_exit(!(signal == SIGTERM || signal == SIGINT));
 357     }
 358 }
 359
 360 static void print_version()
 361 {
 362     g_print("Openbox %s\n", PACKAGE_VERSION);
 363     g_print("Copyright (c) 2004 Mikael Magnusson\n");
 364     g_print("Copyright (c) 2003 Ben Jansens\n\n");
 365     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 366     g_print("This is free software, and you are welcome to redistribute it\n");
 367     g_print("under certain conditions. See the file COPYING for details.\n\n");
 368 }
 369
 370 static void print_help()
 371 {
 372     g_print("Syntax: openbox [options]\n\n");
 373     g_print("Options:\n\n");
 374 #ifdef USE_SM
 375     g_print("  --sm-disable        Disable connection to session manager\n");
 376     g_print("  --sm-client-id ID   Specify session management ID\n");
 377     g_print("  --sm-save-file FILE Specify file to load a saved session"
 378             "from\n");
 379 #endif
 380     g_print("  --replace           Replace the currently running window "
 381             "manager\n");
 382     g_print("  --help              Display this help and exit\n");
 383     g_print("  --version           Display the version and exit\n");
 384     g_print("  --sync              Run in synchronous mode (this is slow and "
 385             "meant for\n"
 386             "                      debugging X routines)\n");
 387     g_print("  --debug             Display debugging output\n");
 388     g_print("\nPlease report bugs at %s\n\n", PACKAGE_BUGREPORT);
 389 }
 390
 391 static void parse_args(gint argc, gchar **argv)
 392 {
 393     gint i;
 394
 395     for (i = 1; i < argc; ++i) {
 396         if (!strcmp(argv[i], "--version")) {
 397             print_version();
 398             exit(0);
 399         } else if (!strcmp(argv[i], "--help")) {
 400             print_help();
 401             exit(0);
 402         } else if (!strcmp(argv[i], "--g-fatal-warnings")) {
 403             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
 404         } else if (!strcmp(argv[i], "--replace")) {
 405             ob_replace_wm = TRUE;
 406         } else if (!strcmp(argv[i], "--sync")) {
 407             xsync = TRUE;
 408         } else if (!strcmp(argv[i], "--debug")) {
 409             ob_debug_show_output(TRUE);
 410         } else {
 411             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 412             print_help();
 413             exit(1);
 414         }
 415     }
 416 }
 417
 418 void ob_exit_with_error(gchar *msg)
 419 {
 420     g_critical(msg);
 421     session_shutdown();
 422     exit(EXIT_FAILURE);
 423 }
 424
 425 void ob_restart_other(const gchar *path)
 426 {
 427     restart_path = g_strdup(path);
 428     ob_restart();
 429 }
 430
 431 void ob_restart()
 432 {
 433     restart = TRUE;
 434     ob_exit(0);
 435 }
 436
 437 void ob_reconfigure()
 438 {
 439     reconfigure = TRUE;
 440     ob_exit(0);
 441 }
 442
 443 void ob_exit(gint code)
 444 {
 445     exitcode = code;
 446     ob_main_loop_exit(ob_main_loop);
 447 }
 448
 449 Cursor ob_cursor(ObCursor cursor)
 450 {
 451     g_assert(cursor < OB_NUM_CURSORS);
 452     return cursors[cursor];
 453 }
 454
 455 KeyCode ob_keycode(ObKey key)
 456 {
 457     g_assert(key < OB_NUM_KEYS);
 458     return keys[key];
 459 }
 460
 461 ObState ob_state()
 462 {
 463     return state;
 464 }