add prop.[ch] to the libobt, but they are not used yet. add a global obt_display...
[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 "prop.h"
29 #include "screen.h"
30 #include "actions.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 "menuframe.h"
41 #include "grab.h"
42 #include "group.h"
43 #include "config.h"
44 #include "ping.h"
45 #include "mainloop.h"
46 #include "gettext.h"
47 #include "parser/parse.h"
48 #include "render/render.h"
49 #include "render/theme.h"
50 #include "obt/display.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 RrInstance  *ob_rr_inst;
86 RrTheme     *ob_rr_theme;
87 ObtMainLoop *ob_main_loop;
88 Display     *ob_display;
89 gint         ob_screen;
90 gboolean     ob_replace_wm = FALSE;
91 gboolean     ob_sm_use = TRUE;
92 gchar       *ob_sm_id = NULL;
93 gchar       *ob_sm_save_file = NULL;
94 gboolean     ob_sm_restore = TRUE;
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     if (!obt_display_open(NULL))
146         ob_exit_with_error(_("Failed to open the display from the DISPLAY environment variable."));
147     ob_display = obt_display;
148
149     if (remote_control) {
150         prop_startup();
151
152         /* Send client message telling the OB process to:
153          * remote_control = 1 -> reconfigure
154          * remote_control = 2 -> restart */
155         PROP_MSG(RootWindow(ob_display, ob_screen),
156                  ob_control, remote_control, 0, 0, 0);
157         obt_display_close(ob_display);
158         exit(EXIT_SUCCESS);
159     }
160
161     ob_main_loop = obt_main_loop_new(ob_display);
162
163     /* set up signal handler */
164     obt_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL,NULL);
165     obt_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL,NULL);
166     obt_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL,NULL);
167     obt_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler,  NULL,NULL);
168     obt_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler,  NULL,NULL);
169     obt_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL,NULL);
170     obt_main_loop_signal_add(ob_main_loop, SIGCHLD, signal_handler, NULL,NULL);
171
172     ob_screen = DefaultScreen(ob_display);
173
174     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
175     if (ob_rr_inst == NULL)
176         ob_exit_with_error(_("Failed to initialize the obrender library."));
177
178     XSynchronize(ob_display, xsync);
179
180     /* check for locale support */
181     if (!XSupportsLocale())
182         g_message(_("X server does not support locale."));
183     if (!XSetLocaleModifiers(""))
184         g_message(_("Cannot set locale modifiers for the X server."));
185
186     /* set the DISPLAY environment variable for any lauched children, to the
187        display we're using, so they open in the right place. */
188     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
189
190     /* create available cursors */
191     cursors[OB_CURSOR_NONE] = None;
192     cursors[OB_CURSOR_POINTER] = load_cursor("left_ptr", XC_left_ptr);
193     cursors[OB_CURSOR_BUSYPOINTER] = load_cursor("left_ptr_watch",XC_left_ptr);
194     cursors[OB_CURSOR_BUSY] = load_cursor("watch", XC_watch);
195     cursors[OB_CURSOR_MOVE] = load_cursor("fleur", XC_fleur);
196     cursors[OB_CURSOR_NORTH] = load_cursor("top_side", XC_top_side);
197     cursors[OB_CURSOR_NORTHEAST] = load_cursor("top_right_corner",
198                                                XC_top_right_corner);
199     cursors[OB_CURSOR_EAST] = load_cursor("right_side", XC_right_side);
200     cursors[OB_CURSOR_SOUTHEAST] = load_cursor("bottom_right_corner",
201                                                XC_bottom_right_corner);
202     cursors[OB_CURSOR_SOUTH] = load_cursor("bottom_side", XC_bottom_side);
203     cursors[OB_CURSOR_SOUTHWEST] = load_cursor("bottom_left_corner",
204                                                XC_bottom_left_corner);
205     cursors[OB_CURSOR_WEST] = load_cursor("left_side", XC_left_side);
206     cursors[OB_CURSOR_NORTHWEST] = load_cursor("top_left_corner",
207                                                XC_top_left_corner);
208
209     prop_startup(); /* get atoms values for the display */
210
211     if (screen_annex()) { /* it will be ours! */
212         do {
213             modkeys_startup(reconfigure);
214
215             /* get the keycodes for keys we use */
216             keys[OB_KEY_RETURN] = modkeys_sym_to_code(XK_Return);
217             keys[OB_KEY_ESCAPE] = modkeys_sym_to_code(XK_Escape);
218             keys[OB_KEY_LEFT] = modkeys_sym_to_code(XK_Left);
219             keys[OB_KEY_RIGHT] = modkeys_sym_to_code(XK_Right);
220             keys[OB_KEY_UP] = modkeys_sym_to_code(XK_Up);
221             keys[OB_KEY_DOWN] = modkeys_sym_to_code(XK_Down);
222
223             {
224                 ObParseInst *i;
225                 xmlDocPtr doc;
226                 xmlNodePtr node;
227
228                 /* startup the parsing so everything can register sections
229                    of the rc */
230                 i = parse_startup();
231
232                 /* register all the available actions */
233                 actions_startup(reconfigure);
234                 /* start up config which sets up with the parser */
235                 config_startup(i);
236
237                 /* parse/load user options */
238                 if (parse_load_rc(NULL, &doc, &node)) {
239                     parse_tree(i, doc, node->xmlChildrenNode);
240                     parse_close(doc);
241                 } else
242                     g_message(_("Unable to find a valid config file, using some simple defaults"));
243
244 /*
245                 if (config_type != NULL)
246                     PROP_SETS(RootWindow(ob_display, ob_screen),
247                               ob_config, config_type);
248 */
249
250                 /* we're done with parsing now, kill it */
251                 parse_shutdown(i);
252             }
253
254             /* load the theme specified in the rc file */
255             {
256                 RrTheme *theme;
257                 if ((theme = RrThemeNew(ob_rr_inst, config_theme, TRUE,
258                                         config_font_activewindow,
259                                         config_font_inactivewindow,
260                                         config_font_menutitle,
261                                         config_font_menuitem,
262                                         config_font_osd)))
263                 {
264                     RrThemeFree(ob_rr_theme);
265                     ob_rr_theme = theme;
266                 }
267                 if (ob_rr_theme == NULL)
268                     ob_exit_with_error(_("Unable to load a theme."));
269
270                 PROP_SETS(RootWindow(ob_display, ob_screen),
271                           ob_theme, ob_rr_theme->name);
272             }
273
274             if (reconfigure) {
275                 GList *it;
276
277                 /* update all existing windows for the new theme */
278                 for (it = client_list; it; it = g_list_next(it)) {
279                     ObClient *c = it->data;
280                     frame_adjust_theme(c->frame);
281                 }
282             }
283             event_startup(reconfigure);
284             /* focus_backup is used for stacking, so this needs to come before
285                anything that calls stacking_add */
286             sn_startup(reconfigure);
287             window_startup(reconfigure);
288             focus_startup(reconfigure);
289             focus_cycle_startup(reconfigure);
290             focus_cycle_indicator_startup(reconfigure);
291             focus_cycle_popup_startup(reconfigure);
292             screen_startup(reconfigure);
293             grab_startup(reconfigure);
294             group_startup(reconfigure);
295             ping_startup(reconfigure);
296             client_startup(reconfigure);
297             dock_startup(reconfigure);
298             moveresize_startup(reconfigure);
299             keyboard_startup(reconfigure);
300             mouse_startup(reconfigure);
301             menu_frame_startup(reconfigure);
302             menu_startup(reconfigure);
303
304             if (!reconfigure) {
305                 guint32 xid;
306                 ObWindow *w;
307
308                 /* get all the existing windows */
309                 client_manage_all();
310                 focus_nothing();
311
312                 /* focus what was focused if a wm was already running */
313                 if (PROP_GET32(RootWindow(ob_display, ob_screen),
314                                net_active_window, window, &xid) &&
315                     (w = g_hash_table_lookup(window_map, &xid)) &&
316                     WINDOW_IS_CLIENT(w))
317                 {
318                     client_focus(WINDOW_AS_CLIENT(w));
319                 }
320             } else {
321                 GList *it;
322
323                 /* redecorate all existing windows */
324                 for (it = client_list; it; it = g_list_next(it)) {
325                     ObClient *c = it->data;
326
327                     /* the new config can change the window's decorations */
328                     client_setup_decor_and_functions(c, FALSE);
329                     /* redraw the frames */
330                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
331                     /* the decor sizes may have changed, so the windows may
332                        end up in new positions */
333                     client_reconfigure(c, FALSE);
334                 }
335             }
336
337             reconfigure = FALSE;
338
339             state = OB_STATE_RUNNING;
340             obt_main_loop_run(ob_main_loop);
341             state = OB_STATE_EXITING;
342
343             if (!reconfigure) {
344                 dock_remove_all();
345                 client_unmanage_all();
346             }
347
348             menu_shutdown(reconfigure);
349             menu_frame_shutdown(reconfigure);
350             mouse_shutdown(reconfigure);
351             keyboard_shutdown(reconfigure);
352             moveresize_shutdown(reconfigure);
353             dock_shutdown(reconfigure);
354             client_shutdown(reconfigure);
355             ping_shutdown(reconfigure);
356             group_shutdown(reconfigure);
357             grab_shutdown(reconfigure);
358             screen_shutdown(reconfigure);
359             focus_cycle_popup_shutdown(reconfigure);
360             focus_cycle_indicator_shutdown(reconfigure);
361             focus_cycle_shutdown(reconfigure);
362             focus_shutdown(reconfigure);
363             window_shutdown(reconfigure);
364             sn_shutdown(reconfigure);
365             event_shutdown(reconfigure);
366             config_shutdown();
367             actions_shutdown(reconfigure);
368             modkeys_shutdown(reconfigure);
369         } while (reconfigure);
370     }
371
372     XSync(ob_display, FALSE);
373
374     RrThemeFree(ob_rr_theme);
375     RrInstanceFree(ob_rr_inst);
376
377     session_shutdown(being_replaced);
378
379     obt_display_close(ob_display);
380
381     parse_paths_shutdown();
382
383     if (restart) {
384         if (restart_path != NULL) {
385             gint argcp;
386             gchar **argvp;
387             GError *err = NULL;
388
389             /* run other window manager */
390             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
391                 execvp(argvp[0], argvp);
392                 g_strfreev(argvp);
393             } else {
394                 g_message(
395                     _("Restart failed to execute new executable '%s': %s"),
396                     restart_path, err->message);
397                 g_error_free(err);
398             }
399         }
400
401         /* we remove the session arguments from argv, so put them back,
402            also don't restore the session on restart */
403         if (ob_sm_save_file != NULL || ob_sm_id != NULL) {
404             gchar **nargv;
405             gint i, l;
406
407             l = argc + 1 +
408                 (ob_sm_save_file != NULL ? 2 : 0) +
409                 (ob_sm_id != NULL ? 2 : 0);
410             nargv = g_new0(gchar*, l+1);
411             for (i = 0; i < argc; ++i)
412                 nargv[i] = argv[i];
413
414             if (ob_sm_save_file != NULL) {
415                 nargv[i++] = g_strdup("--sm-save-file");
416                 nargv[i++] = ob_sm_save_file;
417             }
418             if (ob_sm_id != NULL) {
419                 nargv[i++] = g_strdup("--sm-client-id");
420                 nargv[i++] = ob_sm_id;
421             }
422             nargv[i++] = g_strdup("--sm-no-load");
423             g_assert(i == l);
424             argv = nargv;
425         }
426
427         /* re-run me */
428         execvp(argv[0], argv); /* try how we were run */
429         execlp(argv[0], program_name, (gchar*)NULL); /* last resort */
430     }
431
432     /* free stuff passed in from the command line or environment */
433     g_free(ob_sm_save_file);
434     g_free(ob_sm_id);
435     g_free(program_name);
436
437     return exitcode;
438 }
439
440 static void signal_handler(gint signal, gpointer data)
441 {
442     switch (signal) {
443     case SIGUSR1:
444         ob_debug("Caught signal %d. Restarting.\n", signal);
445         ob_restart();
446         break;
447     case SIGUSR2:
448         ob_debug("Caught signal %d. Reconfiguring.\n", signal);
449         ob_reconfigure();
450         break;
451     case SIGCHLD:
452         /* reap children */
453         while (waitpid(-1, NULL, WNOHANG) > 0);
454         break;
455     default:
456         ob_debug("Caught signal %d. Exiting.\n", signal);
457         /* TERM and INT return a 0 code */
458         ob_exit(!(signal == SIGTERM || signal == SIGINT));
459     }
460 }
461
462 static void print_version()
463 {
464     g_print("Openbox %s\n", PACKAGE_VERSION);
465     g_print(_("Copyright (c)"));
466     g_print(" 2008        Mikael Magnusson\n");
467     g_print(_("Copyright (c)"));
468     g_print(" 2003-2006   Dana Jansens\n\n");
469     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
470     g_print("This is free software, and you are welcome to redistribute it\n");
471     g_print("under certain conditions. See the file COPYING for details.\n\n");
472 }
473
474 static void print_help()
475 {
476     g_print(_("Syntax: openbox [options]\n"));
477     g_print(_("\nOptions:\n"));
478     g_print(_("  --help              Display this help and exit\n"));
479     g_print(_("  --version           Display the version and exit\n"));
480     g_print(_("  --replace           Replace the currently running window manager\n"));
481     g_print(_("  --sm-disable        Disable connection to the session manager\n"));
482     g_print(_("\nPassing messages to a running Openbox instance:\n"));
483     g_print(_("  --reconfigure       Reload Openbox's configuration\n"));
484     g_print(_("  --restart           Restart Openbox\n"));
485     g_print(_("  --exit              Exit Openbox\n"));
486     g_print(_("\nDebugging options:\n"));
487     g_print(_("  --sync              Run in synchronous mode\n"));
488     g_print(_("  --debug             Display debugging output\n"));
489     g_print(_("  --debug-focus       Display debugging output for focus handling\n"));
490     g_print(_("  --debug-xinerama    Split the display into fake xinerama screens\n"));
491     g_print(_("\nPlease report bugs at %s\n"), PACKAGE_BUGREPORT);
492 }
493
494 static void remove_args(gint *argc, gchar **argv, gint index, gint num)
495 {
496     gint i;
497
498     for (i = index; i < *argc - num; ++i)
499         argv[i] = argv[i+num];
500     for (; i < *argc; ++i)
501         argv[i] = NULL;
502     *argc -= num;
503 }
504
505 static void parse_env()
506 {
507     /* unset this so we don't pass it on unknowingly */
508     gchar *s = g_strdup("DESKTOP_STARTUP_ID");
509     putenv(s);
510     g_free(s);
511 }
512
513 static void parse_args(gint *argc, gchar **argv)
514 {
515     gint i;
516
517     for (i = 1; i < *argc; ++i) {
518         if (!strcmp(argv[i], "--version")) {
519             print_version();
520             exit(0);
521         }
522         else if (!strcmp(argv[i], "--help")) {
523             print_help();
524             exit(0);
525         }
526         else if (!strcmp(argv[i], "--g-fatal-warnings")) {
527             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
528         }
529         else if (!strcmp(argv[i], "--replace")) {
530             ob_replace_wm = TRUE;
531             remove_args(argc, argv, i, 1);
532             --i; /* this arg was removed so go back */
533         }
534         else if (!strcmp(argv[i], "--sync")) {
535             xsync = TRUE;
536         }
537         else if (!strcmp(argv[i], "--debug")) {
538             ob_debug_show_output(TRUE);
539             ob_debug_enable(OB_DEBUG_SM, TRUE);
540             ob_debug_enable(OB_DEBUG_APP_BUGS, TRUE);
541         }
542         else if (!strcmp(argv[i], "--debug-focus")) {
543             ob_debug_show_output(TRUE);
544             ob_debug_enable(OB_DEBUG_SM, TRUE);
545             ob_debug_enable(OB_DEBUG_APP_BUGS, TRUE);
546             ob_debug_enable(OB_DEBUG_FOCUS, TRUE);
547         }
548         else if (!strcmp(argv[i], "--debug-xinerama")) {
549             ob_debug_xinerama = TRUE;
550         }
551         else if (!strcmp(argv[i], "--reconfigure")) {
552             remote_control = 1;
553         }
554         else if (!strcmp(argv[i], "--restart")) {
555             remote_control = 2;
556         }
557         else if (!strcmp(argv[i], "--exit")) {
558             remote_control = 3;
559         }
560         else if (!strcmp(argv[i], "--sm-save-file")) {
561             if (i == *argc - 1) /* no args left */
562                 /* not translated cuz it's sekret */
563                 g_printerr("--sm-save-file requires an argument\n");
564             else {
565                 ob_sm_save_file = g_strdup(argv[i+1]);
566                 remove_args(argc, argv, i, 2);
567                 --i; /* this arg was removed so go back */
568                 ob_debug_type(OB_DEBUG_SM, "--sm-save-file %s\n",
569                               ob_sm_save_file);
570             }
571         }
572         else if (!strcmp(argv[i], "--sm-client-id")) {
573             if (i == *argc - 1) /* no args left */
574                 /* not translated cuz it's sekret */
575                 g_printerr("--sm-client-id requires an argument\n");
576             else {
577                 ob_sm_id = g_strdup(argv[i+1]);
578                 remove_args(argc, argv, i, 2);
579                 --i; /* this arg was removed so go back */
580                 ob_debug_type(OB_DEBUG_SM, "--sm-client-id %s\n", ob_sm_id);
581             }
582         }
583         else if (!strcmp(argv[i], "--sm-disable")) {
584             ob_sm_use = FALSE;
585         }
586         else if (!strcmp(argv[i], "--sm-no-load")) {
587             ob_sm_restore = FALSE;
588             remove_args(argc, argv, i, 1);
589             --i; /* this arg was removed so go back */
590         }
591         else {
592             /* this is a memleak.. oh well.. heh */
593             gchar *err = g_strdup_printf
594                 (_("Invalid command line argument '%s'\n"), argv[i]);
595             ob_exit_with_error(err);
596         }
597     }
598 }
599
600 static Cursor load_cursor(const gchar *name, guint fontval)
601 {
602     Cursor c = None;
603
604 #if USE_XCURSOR
605     c = XcursorLibraryLoadCursor(ob_display, name);
606 #endif
607     if (c == None)
608         c = XCreateFontCursor(ob_display, fontval);
609     return c;
610 }
611
612 void ob_exit_with_error(const gchar *msg)
613 {
614     g_message(msg);
615     session_shutdown(TRUE);
616     exit(EXIT_FAILURE);
617 }
618
619 void ob_restart_other(const gchar *path)
620 {
621     restart_path = g_strdup(path);
622     ob_restart();
623 }
624
625 void ob_restart()
626 {
627     restart = TRUE;
628     ob_exit(0);
629 }
630
631 void ob_reconfigure()
632 {
633     reconfigure = TRUE;
634     ob_exit(0);
635 }
636
637 void ob_exit(gint code)
638 {
639     exitcode = code;
640     obt_main_loop_exit(ob_main_loop);
641 }
642
643 void ob_exit_replace()
644 {
645     exitcode = 0;
646     being_replaced = TRUE;
647     obt_main_loop_exit(ob_main_loop);
648 }
649
650 Cursor ob_cursor(ObCursor cursor)
651 {
652     g_assert(cursor < OB_NUM_CURSORS);
653     return cursors[cursor];
654 }
655
656 KeyCode ob_keycode(ObKey key)
657 {
658     g_assert(key < OB_NUM_KEYS);
659     return keys[key];
660 }
661
662 ObState ob_state()
663 {
664     return state;
665 }