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 char     *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(int signal, gpointer data);
  85 static void parse_args(int argc, char **argv);
  86
  87 int main(int argc, char **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     parse_paths_startup();
 105
 106     session_startup(&argc, &argv);
 107
 108     /* parse out command line args */
 109     parse_args(argc, argv);
 110
 111     ob_display = XOpenDisplay(NULL);
 112     if (ob_display == NULL)
 113         ob_exit_with_error("Failed to open the display.");
 114     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
 115         ob_exit_with_error("Failed to set display as close-on-exec.");
 116
 117     ob_main_loop = ob_main_loop_new(ob_display);
 118
 119     /* set up signal handler */
 120     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
 121     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
 122     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
 123     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
 124     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
 125     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
 126
 127     ob_screen = DefaultScreen(ob_display);
 128
 129     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
 130     if (ob_rr_inst == NULL)
 131         ob_exit_with_error("Failed to initialize the render library.");
 132
 133     /* XXX fork self onto other screens */
 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                 xmlFreeDoc(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     RrThemeFree(ob_rr_theme);
 291     RrInstanceFree(ob_rr_inst);
 292
 293     session_shutdown();
 294
 295     XCloseDisplay(ob_display);
 296
 297     parse_paths_shutdown();
 298
 299     if (restart) {
 300         if (restart_path != NULL) {
 301             int argcp;
 302             char **argvp;
 303             GError *err = NULL;
 304
 305             /* run other shit */
 306             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
 307                 execvp(argvp[0], argvp);
 308                 g_strfreev(argvp);
 309             } else {
 310                 g_warning("failed to execute '%s': %s", restart_path,
 311                           err->message);
 312             }
 313         }
 314
 315         /* re-run me */
 316         execvp(argv[0], argv); /* try how we were run */
 317         execlp(argv[0], g_path_get_basename(argv[0])); /* last resort */
 318     }
 319
 320     return exitcode;
 321 }
 322
 323 static void signal_handler(int signal, gpointer data)
 324 {
 325     if (signal == SIGUSR1) {
 326         fprintf(stderr, "Caught signal %d. Restarting.\n", signal);
 327         ob_restart();
 328     } else if (signal == SIGUSR2) {
 329         fprintf(stderr, "Caught signal %d. Reconfiguring.\n", signal);
 330         ob_reconfigure();
 331     } else {
 332         fprintf(stderr, "Caught signal %d. Exiting.\n", signal);
 333         /* TERM and INT return a 0 code */
 334         ob_exit(!(signal == SIGTERM || signal == SIGINT));
 335     }
 336 }
 337
 338 static void print_version()
 339 {
 340     g_print("Openbox %s\n", PACKAGE_VERSION);
 341         g_print("Copyright (c) 2003 Ben Jansens, and others\n\n");
 342     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
 343     g_print("This is free software, and you are welcome to redistribute it\n");
 344     g_print("under certain conditions. See the file COPYING for details.\n\n");
 345 }
 346
 347 static void print_help()
 348 {
 349     g_print("Syntax: openbox [options]\n\n");
 350     g_print("Options:\n\n");
 351 #ifdef USE_SM
 352     g_print("  --sm-disable        Disable connection to session manager\n");
 353     g_print("  --sm-client-id ID   Specify session management ID\n");
 354     g_print("  --sm-save-file FILE Specify file to load a saved session"
 355             "from\n");
 356 #endif
 357     g_print("  --replace           Replace the currently running window "
 358             "manager\n");
 359     g_print("  --help              Display this help and exit\n");
 360     g_print("  --version           Display the version and exit\n");
 361     g_print("  --sync              Run in synchronous mode (this is slow and "
 362             "meant for\n"
 363                         "                      debugging X routines)\n");
 364     g_print("  --debug             Display debugging output\n");
 365     g_print("\nPlease report bugs at %s\n\n", PACKAGE_BUGREPORT);
 366 }
 367
 368 static void parse_args(int argc, char **argv)
 369 {
 370     int i;
 371
 372     for (i = 1; i < argc; ++i) {
 373         if (!strcmp(argv[i], "--version")) {
 374             print_version();
 375             exit(0);
 376         } else if (!strcmp(argv[i], "--help")) {
 377             print_help();
 378             exit(0);
 379         } else if (!strcmp(argv[i], "--g-fatal-warnings")) {
 380             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
 381         } else if (!strcmp(argv[i], "--replace")) {
 382             ob_replace_wm = TRUE;
 383         } else if (!strcmp(argv[i], "--sync")) {
 384             xsync = TRUE;
 385         } else if (!strcmp(argv[i], "--debug")) {
 386             ob_debug_show_output(TRUE);
 387         } else {
 388             g_printerr("Invalid option: '%s'\n\n", argv[i]);
 389             print_help();
 390             exit(1);
 391         }
 392     }
 393 }
 394
 395 void ob_exit_with_error(gchar *msg)
 396 {
 397     g_critical(msg);
 398     session_shutdown();
 399     exit(EXIT_FAILURE);
 400 }
 401
 402 void ob_restart_other(const gchar *path)
 403 {
 404     restart_path = g_strdup(path);
 405     ob_restart();
 406 }
 407
 408 void ob_restart()
 409 {
 410     restart = TRUE;
 411     ob_exit(0);
 412 }
 413
 414 void ob_reconfigure()
 415 {
 416     reconfigure = TRUE;
 417     ob_exit(0);
 418 }
 419
 420 void ob_exit(gint code)
 421 {
 422     exitcode = code;
 423     ob_main_loop_exit(ob_main_loop);
 424 }
 425
 426 Cursor ob_cursor(ObCursor cursor)
 427 {
 428     g_assert(cursor < OB_NUM_CURSORS);
 429     return cursors[cursor];
 430 }
 431
 432 KeyCode ob_keycode(ObKey key)
 433 {
 434     g_assert(key < OB_NUM_KEYS);
 435     return keys[key];
 436 }
 437
 438 ObState ob_state()
 439 {
 440     return state;
 441 }