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