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[dana/openbox.git] / 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) 2003-2007   Dana 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 "modkeys.h"
25 #include "event.h"
26 #include "menu.h"
27 #include "client.h"
28 #include "xerror.h"
29 #include "prop.h"
30 #include "screen.h"
31 #include "startupnotify.h"
32 #include "focus.h"
33 #include "focus_cycle.h"
34 #include "focus_cycle_indicator.h"
35 #include "focus_cycle_popup.h"
36 #include "moveresize.h"
37 #include "frame.h"
38 #include "keyboard.h"
39 #include "mouse.h"
40 #include "extensions.h"
41 #include "menuframe.h"
42 #include "grab.h"
43 #include "group.h"
44 #include "propwin.h"
45 #include "config.h"
46 #include "mainloop.h"
47 #include "gettext.h"
48 #include "parser/parse.h"
49 #include "render/render.h"
50 #include "render/theme.h"
51
52 #ifdef HAVE_FCNTL_H
53 #  include <fcntl.h>
54 #endif
55 #ifdef HAVE_SIGNAL_H
56 #  include <signal.h>
57 #endif
58 #ifdef HAVE_STDLIB_H
59 #  include <stdlib.h>
60 #endif
61 #ifdef HAVE_LOCALE_H
62 #  include <locale.h>
63 #endif
64 #ifdef HAVE_SYS_STAT_H
65 #  include <sys/stat.h>
66 #  include <sys/types.h>
67 #endif
68 #ifdef HAVE_SYS_WAIT_H
69 #  include <sys/types.h>
70 #  include <sys/wait.h>
71 #endif
72 #ifdef HAVE_UNISTD_H
73 #  include <unistd.h>
74 #endif
75 #include <errno.h>
76
77 #include <X11/cursorfont.h>
78 #if USE_XCURSOR
79 #include <X11/Xcursor/Xcursor.h>
80 #endif
81
82 #include <X11/Xlib.h>
83 #include <X11/keysym.h>
84
85
86 RrInstance *ob_rr_inst;
87 RrTheme    *ob_rr_theme;
88 ObMainLoop *ob_main_loop;
89 Display    *ob_display;
90 gint        ob_screen;
91 gboolean    ob_replace_wm = FALSE;
92 gboolean    ob_sm_use = TRUE;
93 gchar      *ob_sm_id = NULL;
94 gchar      *ob_sm_save_file = NULL;
95 gboolean    ob_debug_xinerama = FALSE;
96
97 static ObState   state;
98 static gboolean  xsync = FALSE;
99 static gboolean  reconfigure = FALSE;
100 static gboolean  restart = FALSE;
101 static gchar    *restart_path = NULL;
102 static Cursor    cursors[OB_NUM_CURSORS];
103 static KeyCode   keys[OB_NUM_KEYS];
104 static gint      exitcode = 0;
105 static guint     remote_control = 0;
106 static gboolean  being_replaced = FALSE;
107
108 static void signal_handler(gint signal, gpointer data);
109 static void remove_args(gint *argc, gchar **argv, gint index, gint num);
110 static void parse_env();
111 static void parse_args(gint *argc, gchar **argv);
112 static Cursor load_cursor(const gchar *name, guint fontval);
113
114 gint main(gint argc, gchar **argv)
115 {
116     gchar *program_name;
117
118     state = OB_STATE_STARTING;
119
120     /* initialize the locale */
121     if (!setlocale(LC_ALL, ""))
122         g_message("Couldn't set locale from environment.");
123     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
124     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
125     textdomain(PACKAGE_NAME);
126
127     if (chdir(g_get_home_dir()) == -1)
128         g_message(_("Unable to change to home directory '%s': %s"),
129                   g_get_home_dir(), g_strerror(errno));
130      
131     /* parse the command line args, which can change the argv[0] */
132     parse_args(&argc, argv);
133     /* parse the environment variables */
134     parse_env();
135
136     program_name = g_path_get_basename(argv[0]);
137     g_set_prgname(program_name);
138
139     if (!remote_control) {
140         parse_paths_startup();
141
142         session_startup(argc, argv);
143     }
144
145
146     ob_display = XOpenDisplay(NULL);
147     if (ob_display == NULL)
148         ob_exit_with_error(_("Failed to open the display from the DISPLAY environment variable."));
149     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
150         ob_exit_with_error("Failed to set display as close-on-exec");
151
152     if (remote_control) {
153         prop_startup();
154
155         /* Send client message telling the OB process to:
156          * remote_control = 1 -> reconfigure 
157          * remote_control = 2 -> restart */
158         PROP_MSG(RootWindow(ob_display, ob_screen),
159                  ob_control, remote_control, 0, 0, 0);
160         XCloseDisplay(ob_display);
161         exit(EXIT_SUCCESS);
162     }
163
164     ob_main_loop = ob_main_loop_new(ob_display);
165
166     /* set up signal handler */
167     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
168     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
169     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
170     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
171     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
172     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
173     ob_main_loop_signal_add(ob_main_loop, SIGCHLD, signal_handler, NULL, NULL);
174
175     ob_screen = DefaultScreen(ob_display);
176
177     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
178     if (ob_rr_inst == NULL)
179         ob_exit_with_error(_("Failed to initialize the render library."));
180
181     XSynchronize(ob_display, xsync);
182
183     /* check for locale support */
184     if (!XSupportsLocale())
185         g_message(_("X server does not support locale."));
186     if (!XSetLocaleModifiers(""))
187         g_message(_("Cannot set locale modifiers for the X server."));
188
189     /* set our error handler */
190     XSetErrorHandler(xerror_handler);
191
192     /* set the DISPLAY environment variable for any lauched children, to the
193        display we're using, so they open in the right place. */
194     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
195
196     /* create available cursors */
197     cursors[OB_CURSOR_NONE] = None;
198     cursors[OB_CURSOR_POINTER] = load_cursor("left_ptr", XC_left_ptr);
199     cursors[OB_CURSOR_BUSYPOINTER] = load_cursor("left_ptr_watch",XC_left_ptr);
200     cursors[OB_CURSOR_BUSY] = load_cursor("watch", XC_watch);
201     cursors[OB_CURSOR_MOVE] = load_cursor("fleur", XC_fleur);
202     cursors[OB_CURSOR_NORTH] = load_cursor("top_side", XC_top_side);
203     cursors[OB_CURSOR_NORTHEAST] = load_cursor("top_right_corner",
204                                                XC_top_right_corner);
205     cursors[OB_CURSOR_EAST] = load_cursor("right_side", XC_right_side);
206     cursors[OB_CURSOR_SOUTHEAST] = load_cursor("bottom_right_corner",
207                                                XC_bottom_right_corner);
208     cursors[OB_CURSOR_SOUTH] = load_cursor("bottom_side", XC_bottom_side);
209     cursors[OB_CURSOR_SOUTHWEST] = load_cursor("bottom_left_corner",
210                                                XC_bottom_left_corner);
211     cursors[OB_CURSOR_WEST] = load_cursor("left_side", XC_left_side);
212     cursors[OB_CURSOR_NORTHWEST] = load_cursor("top_left_corner",
213                                                XC_top_left_corner);
214
215
216     prop_startup(); /* get atoms values for the display */
217     extensions_query_all(); /* find which extensions are present */
218
219     if (screen_annex()) { /* it will be ours! */
220         do {
221             modkeys_startup(reconfigure);
222
223             /* get the keycodes for keys we use */
224             keys[OB_KEY_RETURN] = modkeys_sym_to_code(XK_Return);
225             keys[OB_KEY_ESCAPE] = modkeys_sym_to_code(XK_Escape);
226             keys[OB_KEY_LEFT] = modkeys_sym_to_code(XK_Left);
227             keys[OB_KEY_RIGHT] = modkeys_sym_to_code(XK_Right);
228             keys[OB_KEY_UP] = modkeys_sym_to_code(XK_Up);
229             keys[OB_KEY_DOWN] = modkeys_sym_to_code(XK_Down);
230
231             {
232                 ObParseInst *i;
233                 xmlDocPtr doc;
234                 xmlNodePtr node;
235
236                 /* startup the parsing so everything can register sections
237                    of the rc */
238                 i = parse_startup();
239
240                 /* start up config which sets up with the parser */
241                 config_startup(i);
242
243                 /* parse/load user options */
244                 if (parse_load_rc(NULL, &doc, &node)) {
245                     parse_tree(i, doc, node->xmlChildrenNode);
246                     parse_close(doc);
247                 } else
248                     g_message(_("Unable to find a valid config file, using some simple defaults"));
249
250 /*
251                 if (config_type != NULL)
252                     PROP_SETS(RootWindow(ob_display, ob_screen),
253                               ob_config, config_type);
254 */
255
256                 /* we're done with parsing now, kill it */
257                 parse_shutdown(i);
258             }
259
260             /* load the theme specified in the rc file */
261             {
262                 RrTheme *theme;
263                 if ((theme = RrThemeNew(ob_rr_inst, config_theme,
264                                         config_font_activewindow,
265                                         config_font_inactivewindow,
266                                         config_font_menutitle,
267                                         config_font_menuitem,
268                                         config_font_osd)))
269                 {
270                     RrThemeFree(ob_rr_theme);
271                     ob_rr_theme = theme;
272                 }
273                 if (ob_rr_theme == NULL)
274                     ob_exit_with_error(_("Unable to load a theme."));
275             }
276
277             if (reconfigure) {
278                 GList *it;
279
280                 /* update all existing windows for the new theme */
281                 for (it = client_list; it; it = g_list_next(it)) {
282                     ObClient *c = it->data;
283                     frame_adjust_theme(c->frame);
284                 }
285             }
286             event_startup(reconfigure);
287             /* focus_backup is used for stacking, so this needs to come before
288                anything that calls stacking_add */
289             focus_startup(reconfigure);
290             focus_cycle_startup(reconfigure);
291             focus_cycle_indicator_startup(reconfigure);
292             focus_cycle_popup_startup(reconfigure);
293             window_startup(reconfigure);
294             sn_startup(reconfigure);
295             screen_startup(reconfigure);
296             grab_startup(reconfigure);
297             propwin_startup(reconfigure);
298             group_startup(reconfigure);
299             client_startup(reconfigure);
300             dock_startup(reconfigure);
301             moveresize_startup(reconfigure);
302             keyboard_startup(reconfigure);
303             mouse_startup(reconfigure);
304             menu_startup(reconfigure);
305             menu_frame_startup(reconfigure);
306
307             if (!reconfigure) {
308                 guint32 xid;
309                 ObWindow *w;
310
311                 /* get all the existing windows */
312                 client_manage_all();
313                 focus_nothing();
314
315                 /* focus what was focused if a wm was already running */
316                 if (PROP_GET32(RootWindow(ob_display, ob_screen),
317                                net_active_window, window, &xid) &&
318                     (w = g_hash_table_lookup(window_map, &xid)) &&
319                     WINDOW_IS_CLIENT(w))
320                 {
321                     client_focus(WINDOW_AS_CLIENT(w));
322                 }
323             } else {
324                 GList *it;
325
326                 /* redecorate all existing windows */
327                 for (it = client_list; it; it = g_list_next(it)) {
328                     ObClient *c = it->data;
329                     /* the new config can change the window's decorations */
330                     client_setup_decor_and_functions(c);
331                     /* redraw the frames */
332                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
333                 }
334             }
335
336             reconfigure = FALSE;
337
338             state = OB_STATE_RUNNING;
339             ob_main_loop_run(ob_main_loop);
340             state = OB_STATE_EXITING;
341
342             if (!reconfigure) {
343                 dock_remove_all();
344                 client_unmanage_all();
345             }
346
347             menu_frame_shutdown(reconfigure);
348             menu_shutdown(reconfigure);
349             mouse_shutdown(reconfigure);
350             keyboard_shutdown(reconfigure);
351             moveresize_shutdown(reconfigure);
352             dock_shutdown(reconfigure);
353             client_shutdown(reconfigure);
354             group_shutdown(reconfigure);
355             propwin_shutdown(reconfigure);
356             grab_shutdown(reconfigure);
357             screen_shutdown(reconfigure);
358             focus_cycle_popup_shutdown(reconfigure);
359             focus_cycle_indicator_shutdown(reconfigure);
360             focus_cycle_shutdown(reconfigure);
361             focus_shutdown(reconfigure);
362             sn_shutdown(reconfigure);
363             window_shutdown(reconfigure);
364             event_shutdown(reconfigure);
365             config_shutdown();
366             modkeys_shutdown(reconfigure);
367         } while (reconfigure);
368     }
369
370     XSync(ob_display, FALSE);
371
372     RrThemeFree(ob_rr_theme);
373     RrInstanceFree(ob_rr_inst);
374
375     session_shutdown(being_replaced);
376
377     XCloseDisplay(ob_display);
378
379     parse_paths_shutdown();
380
381     if (restart) {
382         if (restart_path != NULL) {
383             gint argcp;
384             gchar **argvp;
385             GError *err = NULL;
386
387             /* run other window manager */
388             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
389                 execvp(argvp[0], argvp);
390                 g_strfreev(argvp);
391             } else {
392                 g_message(
393                     _("Restart failed to execute new executable '%s': %s"),
394                     restart_path, err->message);
395                 g_error_free(err);
396             }
397         }
398
399         /* we remove the session arguments from argv, so put them back */
400         if (ob_sm_save_file != NULL || ob_sm_id != NULL) {
401             gchar **nargv;
402             gint i, l;
403
404             l = argc +
405                 (ob_sm_save_file != NULL ? 2 : 0) +
406                 (ob_sm_id != NULL ? 2 : 0);
407             nargv = g_new0(gchar*, l+1);
408             for (i = 0; i < argc; ++i)
409                 nargv[i] = argv[i];
410
411             if (ob_sm_save_file != NULL) {
412                 nargv[i++] = g_strdup("--sm-save-file");
413                 nargv[i++] = ob_sm_save_file;
414             }
415             if (ob_sm_id != NULL) {
416                 nargv[i++] = g_strdup("--sm-client-id");
417                 nargv[i++] = ob_sm_id;
418             }
419             g_assert(i == l);
420             argv = nargv;
421         }
422
423         /* re-run me */
424         execvp(argv[0], argv); /* try how we were run */
425         execlp(argv[0], program_name, (gchar*)NULL); /* last resort */
426     }
427
428     /* free stuff passed in from the command line or environment */
429     g_free(ob_sm_save_file);
430     g_free(ob_sm_id);
431     g_free(program_name);
432      
433     return exitcode;
434 }
435
436 static void signal_handler(gint signal, gpointer data)
437 {
438     switch (signal) {
439     case SIGUSR1:
440         ob_debug("Caught signal %d. Restarting.\n", signal);
441         ob_restart();
442         break;
443     case SIGUSR2:
444         ob_debug("Caught signal %d. Reconfiguring.\n", signal);
445         ob_reconfigure(); 
446         break;
447     case SIGCHLD:
448         /* reap children */
449         while (waitpid(-1, NULL, WNOHANG) > 0);
450         break;
451     default:
452         ob_debug("Caught signal %d. Exiting.\n", signal);
453         /* TERM and INT return a 0 code */
454         ob_exit(!(signal == SIGTERM || signal == SIGINT));
455     }
456 }
457
458 static void print_version()
459 {
460     g_print("Openbox %s\n", PACKAGE_VERSION);
461     g_print(_("Copyright (c)"));
462     g_print(" 2007        Mikael Magnusson\n");
463     g_print(_("Copyright (c)"));
464     g_print(" 2003-2007   Dana Jansens\n\n");
465     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
466     g_print("This is free software, and you are welcome to redistribute it\n");
467     g_print("under certain conditions. See the file COPYING for details.\n\n");
468 }
469
470 static void print_help()
471 {
472     g_print(_("Syntax: openbox [options]\n"));
473     g_print(_("\nOptions:\n"));
474     g_print(_("  --help              Display this help and exit\n"));
475     g_print(_("  --version           Display the version and exit\n"));
476     g_print(_("  --replace           Replace the currently running window manager\n"));
477     g_print(_("  --sm-disable        Disable connection to the session manager\n"));
478     g_print(_("\nPassing messages to a running Openbox instance:\n"));
479     g_print(_("  --reconfigure       Reload Openbox's configuration\n"));
480     g_print(_("\nDebugging options:\n"));
481     g_print(_("  --sync              Run in synchronous mode\n"));
482     g_print(_("  --debug             Display debugging output\n"));
483     g_print(_("  --debug-focus       Display debugging output for focus handling\n"));
484     g_print(_("  --debug-xinerama    Split the display into fake xinerama screens\n"));
485     g_print(_("\nPlease report bugs at %s\n"), PACKAGE_BUGREPORT);
486 }
487
488 static void remove_args(gint *argc, gchar **argv, gint index, gint num)
489 {
490     gint i;
491
492     for (i = index; i < *argc - num; ++i)
493         argv[i] = argv[i+num];
494     for (; i < *argc; ++i)
495         argv[i] = NULL;
496     *argc -= num;
497 }
498
499 static void parse_env()
500 {
501     /* unset this so we don't pass it on unknowingly */
502     unsetenv("DESKTOP_STARTUP_ID");
503 }
504
505 static void parse_args(gint *argc, gchar **argv)
506 {
507     gint i;
508
509     for (i = 1; i < *argc; ++i) {
510         if (!strcmp(argv[i], "--version")) {
511             print_version();
512             exit(0);
513         }
514         else if (!strcmp(argv[i], "--help")) {
515             print_help();
516             exit(0);
517         }
518         else if (!strcmp(argv[i], "--g-fatal-warnings")) {
519             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
520         }
521         else if (!strcmp(argv[i], "--replace")) {
522             ob_replace_wm = TRUE;
523             remove_args(argc, argv, i, 1);
524             --i; /* this arg was removed so go back */
525         }
526         else if (!strcmp(argv[i], "--sync")) {
527             xsync = TRUE;
528         }
529         else if (!strcmp(argv[i], "--debug")) {
530             ob_debug_show_output(TRUE);
531             ob_debug_enable(OB_DEBUG_SM, TRUE);
532             ob_debug_enable(OB_DEBUG_APP_BUGS, TRUE);
533         }
534         else if (!strcmp(argv[i], "--debug-focus")) {
535             ob_debug_show_output(TRUE);
536             ob_debug_enable(OB_DEBUG_SM, TRUE);
537             ob_debug_enable(OB_DEBUG_APP_BUGS, TRUE);
538             ob_debug_enable(OB_DEBUG_FOCUS, TRUE);
539         }
540         else if (!strcmp(argv[i], "--debug-xinerama")) {
541             ob_debug_xinerama = TRUE;
542         }
543         else if (!strcmp(argv[i], "--reconfigure")) {
544             remote_control = 1;
545 /* don't make this do anything if it's not in --help ..
546         } else if (!strcmp(argv[i], "--restart")) {
547             remote_control = 2;
548 */
549         }
550         else if (!strcmp(argv[i], "--sm-save-file")) {
551             if (i == *argc - 1) /* no args left */
552                 /* not translated cuz it's sekret */
553                 g_printerr("--sm-save-file requires an argument\n");
554             else {
555                 ob_sm_save_file = g_strdup(argv[i+1]);
556                 remove_args(argc, argv, i, 2);
557                 --i; /* this arg was removed so go back */
558                 ob_debug_type(OB_DEBUG_SM, "--sm-save-file %s\n",
559                               ob_sm_save_file);
560             }
561         }
562         else if (!strcmp(argv[i], "--sm-client-id")) {
563             if (i == *argc - 1) /* no args left */
564                 /* not translated cuz it's sekret */
565                 g_printerr("--sm-client-id requires an argument\n");
566             else {
567                 ob_sm_id = g_strdup(argv[i+1]);
568                 remove_args(argc, argv, i, 2);
569                 --i; /* this arg was removed so go back */
570                 ob_debug_type(OB_DEBUG_SM, "--sm-client-id %s\n", ob_sm_id);
571             }
572         }
573         else if (!strcmp(argv[i], "--sm-disable")) {
574             ob_sm_use = FALSE;
575         }
576         else {
577             /* this is a memleak.. oh well.. heh */
578             gchar *err = g_strdup_printf
579                 (_("Invalid command line argument '%s'\n"), argv[i]);
580             ob_exit_with_error(err);
581         }
582     }
583 }
584
585 static Cursor load_cursor(const gchar *name, guint fontval)
586 {
587     Cursor c = None;
588
589 #if USE_XCURSOR
590     c = XcursorLibraryLoadCursor(ob_display, name);
591 #endif
592     if (c == None)
593         c = XCreateFontCursor(ob_display, fontval);
594     return c;
595 }
596
597 void ob_exit_with_error(const gchar *msg)
598 {
599     g_message(msg);
600     session_shutdown(TRUE);
601     exit(EXIT_FAILURE);
602 }
603
604 void ob_restart_other(const gchar *path)
605 {
606     restart_path = g_strdup(path);
607     ob_restart();
608 }
609
610 void ob_restart()
611 {
612     restart = TRUE;
613     ob_exit(0);
614 }
615
616 void ob_reconfigure()
617 {
618     reconfigure = TRUE;
619     ob_exit(0);
620 }
621
622 void ob_exit(gint code)
623 {
624     exitcode = code;
625     ob_main_loop_exit(ob_main_loop);
626 }
627
628 void ob_exit_replace()
629 {
630     exitcode = 0;
631     being_replaced = TRUE;
632     ob_main_loop_exit(ob_main_loop);
633 }
634
635 Cursor ob_cursor(ObCursor cursor)
636 {
637     g_assert(cursor < OB_NUM_CURSORS);
638     return cursors[cursor];
639 }
640
641 KeyCode ob_keycode(ObKey key)
642 {
643     g_assert(key < OB_NUM_KEYS);
644     return keys[key];
645 }
646
647 ObState ob_state()
648 {
649     return state;
650 }