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) 2006        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             dock_startup(reconfigure);
 252             moveresize_startup(reconfigure);
 253             keyboard_startup(reconfigure);
 254             mouse_startup(reconfigure);
 255             menu_startup(reconfigure);
 256
 257             if (!reconfigure) {
 258                 /* get all the existing windows */
 259                 client_manage_all();
 260                 focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 261             } else {
 262                 GList *it;
 263
 264                 /* redecorate all existing windows */
 265                 for (it = client_list; it; it = g_list_next(it)) {
 266                     ObClient *c = it->data;
 267                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
 268                 }
 269             }
 270
 271             reconfigure = FALSE;
 272
 273             state = OB_STATE_RUNNING;
 274             ob_main_loop_run(ob_main_loop);
 275             state = OB_STATE_EXITING;
 276
 277             if (!reconfigure) {
 278                 dock_remove_all();
 279                 client_unmanage_all();
 280             }
 281
 282             menu_shutdown(reconfigure);
 283             mouse_shutdown(reconfigure);
 284             keyboard_shutdown(reconfigure);
 285             moveresize_shutdown(reconfigure);
 286             dock_shutdown(reconfigure);
 287             client_shutdown(reconfigure);
 288             group_shutdown(reconfigure);
 289             grab_shutdown(reconfigure);
 290             screen_shutdown(reconfigure);
 291             focus_shutdown(reconfigure);
 292             sn_shutdown(reconfigure);
 293             window_shutdown(reconfigure);
 294             event_shutdown(reconfigure);
 295             config_shutdown();
 296         } while (reconfigure);
 297     }
 298
 299     XSync(ob_display, FALSE);
 300
 301     RrThemeFree(ob_rr_theme);
 302     RrInstanceFree(ob_rr_inst);
 303
 304     session_shutdown();
 305
 306     XCloseDisplay(ob_display);
 307
 308     parse_paths_shutdown();
 309
 310     if (restart) {
 311         if (restart_path != NULL) {
 312             gint argcp;
 313             gchar **argvp;
 314             GError *err = NULL;
 315
 316             /* run other window manager */
 317             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
 318                 execvp(argvp[0], argvp);
 319                 g_strfreev(argvp);
 320             } else {
 321                 g_warning("failed to execute '%s': %s", restart_path,
 322                           err->message);
 323                 g_error_free(err);
 324             }
 325         }
 326
 327         /* re-run me */
 328         execvp(argv[0], argv); /* try how we were run */
 329         execlp(argv[0], g_path_get_basename(argv[0]),
 330                (char *)NULL); /* last resort */
 331     }
 332
 333     return exitcode;
 334 }
 335
 336 static void signal_handler(gint signal, gpointer data)
 337 {
 338     switch (signal) {
 339     case SIGUSR1:
 340         ob_debug("Caught signal %d. Restarting.\n", signal);
 341         ob_restart();
 342         break;
 343     case SIGUSR2:
 344         ob_debug("Caught signal %d. Reconfiguring.\n", signal);
 345         ob_reconfigure();
 346         break;
 347     case SIGCHLD:
 348         /* reap children */
 349         while (waitpid(-1, NULL, WNOHANG) > 0);
 350         break;
 351     default:
 352         ob_debug("Caught signal %d. Exiting.\n", signal);
 353         /* TERM and INT return a 0 code */
 354         ob_exit(!(signal == SIGTERM || signal == SIGINT));
 355     }
 356 }
 357
 358 static void print_version()
 359 {
 360     g_print("Openbox %s\n", PACKAGE_VERSION);
 361     g_print("Copyright (c) 2006 Mikael Magnusson\n");
 362     g_print("Copyright (c) 2003 Ben Jansens\n\n");
 363     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 364     g_print("This is free software, and you are welcome to redistribute it\n");
 365     g_print("under certain conditions. See the file COPYING for details.\n\n");
 366 }
 367
 368 static void print_help()
 369 {
 370     g_print("Syntax: openbox [options]\n\n");
 371     g_print("Options:\n\n");
 372 #ifdef USE_SM
 373     g_print("  --sm-disable        Disable connection to session manager\n");
 374     g_print("  --sm-client-id ID   Specify session management ID\n");
 375     g_print("  --sm-save-file FILE Specify file to load a saved session"
 376             "from\n");
 377 #endif
 378     g_print("  --replace           Replace the currently running window "
 379             "manager\n");
 380     g_print("  --help              Display this help and exit\n");
 381     g_print("  --version           Display the version and exit\n");
 382     g_print("  --sync              Run in synchronous mode (this is slow and "
 383             "meant for\n"
 384             "                      debugging X routines)\n");
 385     g_print("  --debug             Display debugging output\n");
 386     g_print("\nPlease report bugs at %s\n\n", PACKAGE_BUGREPORT);
 387 }
 388
 389 static void parse_args(gint argc, gchar **argv)
 390 {
 391     gint i;
 392
 393     for (i = 1; i < argc; ++i) {
 394         if (!strcmp(argv[i], "--version")) {
 395             print_version();
 396             exit(0);
 397         } else if (!strcmp(argv[i], "--help")) {
 398             print_help();
 399             exit(0);
 400         } else if (!strcmp(argv[i], "--g-fatal-warnings")) {
 401             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
 402         } else if (!strcmp(argv[i], "--replace")) {
 403             ob_replace_wm = TRUE;
 404         } else if (!strcmp(argv[i], "--sync")) {
 405             xsync = TRUE;
 406         } else if (!strcmp(argv[i], "--debug")) {
 407             ob_debug_show_output(TRUE);
 408         } else {
 409             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 410             print_help();
 411             exit(1);
 412         }
 413     }
 414 }
 415
 416 void ob_exit_with_error(gchar *msg)
 417 {
 418     g_critical(msg);
 419     session_shutdown();
 420     exit(EXIT_FAILURE);
 421 }
 422
 423 void ob_restart_other(const gchar *path)
 424 {
 425     restart_path = g_strdup(path);
 426     ob_restart();
 427 }
 428
 429 void ob_restart()
 430 {
 431     restart = TRUE;
 432     ob_exit(0);
 433 }
 434
 435 void ob_reconfigure()
 436 {
 437     reconfigure = TRUE;
 438     ob_exit(0);
 439 }
 440
 441 void ob_exit(gint code)
 442 {
 443     exitcode = code;
 444     ob_main_loop_exit(ob_main_loop);
 445 }
 446
 447 Cursor ob_cursor(ObCursor cursor)
 448 {
 449     g_assert(cursor < OB_NUM_CURSORS);
 450     return cursors[cursor];
 451 }
 452
 453 KeyCode ob_keycode(ObKey key)
 454 {
 455     g_assert(key < OB_NUM_KEYS);
 456     return keys[key];
 457 }
 458
 459 ObState ob_state()
 460 {
 461     return state;
 462 }