Fonts are now going to be configured in the rc.xml file. The format is such as
[mikachu/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        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 = FALSE;
80
81 static ObState   state;
82 static gboolean  xsync = FALSE;
83 static gboolean  reconfigure = FALSE;
84 static gboolean  restart = FALSE;
85 static gchar    *restart_path = NULL;
86 static Cursor    cursors[OB_NUM_CURSORS];
87 static KeyCode   keys[OB_NUM_KEYS];
88 static gint      exitcode = 0;
89 static gboolean  reconfigure_and_exit = FALSE;
90
91 static void signal_handler(gint signal, gpointer data);
92 static void parse_args(gint argc, gchar **argv);
93
94 gint main(gint argc, gchar **argv)
95 {
96 #ifdef DEBUG
97     ob_debug_show_output(TRUE);
98 #endif
99
100     state = OB_STATE_STARTING;
101
102     /* initialize the locale */
103     if (!setlocale(LC_ALL, ""))
104         g_warning("Couldn't set locale from environment.\n");
105     bindtextdomain(PACKAGE_NAME, LOCALEDIR);
106     bind_textdomain_codeset(PACKAGE_NAME, "UTF-8");
107     textdomain(PACKAGE_NAME);
108
109     g_set_prgname(argv[0]);
110
111     if (chdir(g_get_home_dir()) == -1)
112         g_warning("Unable to change to home directory (%s): %s",
113                   g_get_home_dir(), g_strerror(errno));
114      
115     /* parse out command line args */
116     parse_args(argc, argv);
117
118     if (!reconfigure_and_exit) {
119         parse_paths_startup();
120
121         session_startup(argc, argv);
122     }
123
124     ob_display = XOpenDisplay(NULL);
125     if (ob_display == NULL)
126         ob_exit_with_error("Failed to open the display.");
127     if (fcntl(ConnectionNumber(ob_display), F_SETFD, 1) == -1)
128         ob_exit_with_error("Failed to set display as close-on-exec.");
129
130     if (reconfigure_and_exit) {
131         guint32 pid;
132         gboolean ret;
133
134         prop_startup(); /* get atoms values for the display */
135         ret = PROP_GET32(RootWindow(ob_display, DefaultScreen(ob_display)),
136                                     openbox_pid, cardinal, &pid);
137         XCloseDisplay(ob_display);
138         if (!ret) {
139             g_print("Openbox does not appear to be running on this "
140                     "display.\n");
141         } else {
142             g_print("Telling the Openbox process # %u to reconfigure.\n", pid);
143             ret = (kill(pid, SIGUSR2) == 0);
144             if (!ret)
145                 g_print("Error: %s.\n", strerror(errno));
146         }
147         exit(ret ? EXIT_SUCCESS : EXIT_FAILURE);
148     }
149
150     ob_main_loop = ob_main_loop_new(ob_display);
151
152     /* set up signal handler */
153     ob_main_loop_signal_add(ob_main_loop, SIGUSR1, signal_handler, NULL, NULL);
154     ob_main_loop_signal_add(ob_main_loop, SIGUSR2, signal_handler, NULL, NULL);
155     ob_main_loop_signal_add(ob_main_loop, SIGTERM, signal_handler, NULL, NULL);
156     ob_main_loop_signal_add(ob_main_loop, SIGINT, signal_handler, NULL, NULL);
157     ob_main_loop_signal_add(ob_main_loop, SIGHUP, signal_handler, NULL, NULL);
158     ob_main_loop_signal_add(ob_main_loop, SIGPIPE, signal_handler, NULL, NULL);
159     ob_main_loop_signal_add(ob_main_loop, SIGCHLD, signal_handler, NULL, NULL);
160
161     ob_screen = DefaultScreen(ob_display);
162
163     ob_rr_inst = RrInstanceNew(ob_display, ob_screen);
164     if (ob_rr_inst == NULL)
165         ob_exit_with_error("Failed to initialize the render library.");
166
167     XSynchronize(ob_display, xsync);
168
169     /* check for locale support */
170     if (!XSupportsLocale())
171         g_warning("X server does not support locale.");
172     if (!XSetLocaleModifiers(""))
173         g_warning("Cannot set locale modifiers for the X server.");
174
175     /* set our error handler */
176     XSetErrorHandler(xerror_handler);
177
178     /* set the DISPLAY environment variable for any lauched children, to the
179        display we're using, so they open in the right place. */
180     putenv(g_strdup_printf("DISPLAY=%s", DisplayString(ob_display)));
181
182     /* create available cursors */
183     cursors[OB_CURSOR_NONE] = None;
184     cursors[OB_CURSOR_POINTER] =
185         XCreateFontCursor(ob_display, XC_left_ptr);
186     cursors[OB_CURSOR_BUSY] =
187         XCreateFontCursor(ob_display, XC_watch);
188     cursors[OB_CURSOR_MOVE] =
189         XCreateFontCursor(ob_display, XC_fleur);
190     cursors[OB_CURSOR_NORTH] =
191         XCreateFontCursor(ob_display, XC_top_side);
192     cursors[OB_CURSOR_NORTHEAST] =
193         XCreateFontCursor(ob_display, XC_top_right_corner);
194     cursors[OB_CURSOR_EAST] =
195         XCreateFontCursor(ob_display, XC_right_side);
196     cursors[OB_CURSOR_SOUTHEAST] =
197         XCreateFontCursor(ob_display, XC_bottom_right_corner);
198     cursors[OB_CURSOR_SOUTH] =
199         XCreateFontCursor(ob_display, XC_bottom_side);
200     cursors[OB_CURSOR_SOUTHWEST] =
201         XCreateFontCursor(ob_display, XC_bottom_left_corner);
202     cursors[OB_CURSOR_WEST] =
203         XCreateFontCursor(ob_display, XC_left_side);
204     cursors[OB_CURSOR_NORTHWEST] =
205         XCreateFontCursor(ob_display, XC_top_left_corner);
206
207     /* create available keycodes */
208     keys[OB_KEY_RETURN] =
209         XKeysymToKeycode(ob_display, XStringToKeysym("Return"));
210     keys[OB_KEY_ESCAPE] =
211         XKeysymToKeycode(ob_display, XStringToKeysym("Escape"));
212     keys[OB_KEY_LEFT] =
213         XKeysymToKeycode(ob_display, XStringToKeysym("Left"));
214     keys[OB_KEY_RIGHT] =
215         XKeysymToKeycode(ob_display, XStringToKeysym("Right"));
216     keys[OB_KEY_UP] =
217         XKeysymToKeycode(ob_display, XStringToKeysym("Up"));
218     keys[OB_KEY_DOWN] =
219         XKeysymToKeycode(ob_display, XStringToKeysym("Down"));
220
221     prop_startup(); /* get atoms values for the display */
222     extensions_query_all(); /* find which extensions are present */
223
224     if (screen_annex()) { /* it will be ours! */
225         do {
226             {
227                 ObParseInst *i;
228                 xmlDocPtr doc;
229                 xmlNodePtr node;
230
231                 /* startup the parsing so everything can register sections
232                    of the rc */
233                 i = parse_startup();
234
235                 config_startup(i);
236                 /* parse/load user options */
237                 if (parse_load_rc(&doc, &node))
238                     parse_tree(i, doc, node->xmlChildrenNode);
239                 /* we're done with parsing now, kill it */
240                 parse_close(doc);
241                 parse_shutdown(i);
242             }
243
244             /* load the theme specified in the rc file */
245             {
246                 RrTheme *theme;
247                 if ((theme = RrThemeNew(ob_rr_inst, config_theme,
248                                         config_font_activewindow,
249                                         config_font_inactivewindow,
250                                         config_font_menutitle,
251                                         config_font_menuitem)))
252                 {
253                     RrThemeFree(ob_rr_theme);
254                     ob_rr_theme = theme;
255                 }
256                 if (ob_rr_theme == NULL)
257                     ob_exit_with_error("Unable to load a theme.");
258             }
259
260             if (reconfigure) {
261                 GList *it;
262
263                 /* update all existing windows for the new theme */
264                 for (it = client_list; it; it = g_list_next(it)) {
265                     ObClient *c = it->data;
266                     frame_adjust_theme(c->frame);
267                 }
268             }
269             event_startup(reconfigure);
270             /* focus_backup is used for stacking, so this needs to come before
271                anything that calls stacking_add */
272             focus_startup(reconfigure);
273             window_startup(reconfigure);
274             sn_startup(reconfigure);
275             screen_startup(reconfigure);
276             grab_startup(reconfigure);
277             group_startup(reconfigure);
278             client_startup(reconfigure);
279             dock_startup(reconfigure);
280             moveresize_startup(reconfigure);
281             keyboard_startup(reconfigure);
282             mouse_startup(reconfigure);
283             menu_startup(reconfigure);
284
285             if (!reconfigure) {
286                 /* get all the existing windows */
287                 client_manage_all();
288                 focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
289             } else {
290                 GList *it;
291
292                 /* redecorate all existing windows */
293                 for (it = client_list; it; it = g_list_next(it)) {
294                     ObClient *c = it->data;
295                     /* the new config can change the window's decorations */
296                     client_setup_decor_and_functions(c);
297                     /* redraw the frames */
298                     frame_adjust_area(c->frame, TRUE, TRUE, FALSE);
299                 }
300             }
301
302             reconfigure = FALSE;
303
304             state = OB_STATE_RUNNING;
305             ob_main_loop_run(ob_main_loop);
306             state = OB_STATE_EXITING;
307
308             if (!reconfigure) {
309                 dock_remove_all();
310                 client_unmanage_all();
311             }
312
313             menu_shutdown(reconfigure);
314             mouse_shutdown(reconfigure);
315             keyboard_shutdown(reconfigure);
316             moveresize_shutdown(reconfigure);
317             dock_shutdown(reconfigure);
318             client_shutdown(reconfigure);
319             group_shutdown(reconfigure);
320             grab_shutdown(reconfigure);
321             screen_shutdown(reconfigure);
322             focus_shutdown(reconfigure);
323             sn_shutdown(reconfigure);
324             window_shutdown(reconfigure);
325             event_shutdown(reconfigure);
326             config_shutdown();
327         } while (reconfigure);
328     }
329
330     XSync(ob_display, FALSE);
331
332     RrThemeFree(ob_rr_theme);
333     RrInstanceFree(ob_rr_inst);
334
335     session_shutdown();
336
337     XCloseDisplay(ob_display);
338
339     parse_paths_shutdown();
340
341     if (restart) {
342         if (restart_path != NULL) {
343             gint argcp;
344             gchar **argvp;
345             GError *err = NULL;
346
347             /* run other window manager */
348             if (g_shell_parse_argv(restart_path, &argcp, &argvp, &err)) {
349                 execvp(argvp[0], argvp);
350                 g_strfreev(argvp);
351             } else {
352                 g_warning("failed to execute '%s': %s", restart_path,
353                           err->message);
354                 g_error_free(err);
355             }
356         }
357
358         /* re-run me */
359         execvp(argv[0], argv); /* try how we were run */
360         execlp(argv[0], g_path_get_basename(argv[0]),
361                (char *)NULL); /* last resort */
362     }
363      
364     return exitcode;
365 }
366
367 static void signal_handler(gint signal, gpointer data)
368 {
369     switch (signal) {
370     case SIGUSR1:
371         ob_debug("Caught signal %d. Restarting.\n", signal);
372         ob_restart();
373         break;
374     case SIGUSR2:
375         ob_debug("Caught signal %d. Reconfiguring.\n", signal);
376         ob_reconfigure(); 
377         break;
378     case SIGCHLD:
379         /* reap children */
380         while (waitpid(-1, NULL, WNOHANG) > 0);
381         break;
382     default:
383         ob_debug("Caught signal %d. Exiting.\n", signal);
384         /* TERM and INT return a 0 code */
385         ob_exit(!(signal == SIGTERM || signal == SIGINT));
386     }
387 }
388
389 static void print_version()
390 {
391     g_print("Openbox %s\n", PACKAGE_VERSION);
392     g_print("Copyright (c) 2006 Mikael Magnusson\n");
393     g_print("Copyright (c) 2003 Ben Jansens\n\n");
394     g_print("This program comes with ABSOLUTELY NO WARRANTY.\n");
395     g_print("This is free software, and you are welcome to redistribute it\n");
396     g_print("under certain conditions. See the file COPYING for details.\n\n");
397 }
398
399 static void print_help()
400 {
401     g_print("Syntax: openbox [options]\n\n");
402     g_print("Options:\n\n");
403     g_print("  --reconfigure       Tell the currently running instance of "
404             "Openbox to\n"
405             "                      reconfigure (and then exit immediately)\n");
406 #ifdef USE_SM
407     g_print("  --sm-disable        Disable connection to session manager\n");
408     g_print("  --sm-client-id ID   Specify session management ID\n");
409     g_print("  --sm-save-file FILE Specify file to load a saved session"
410             "from\n");
411 #endif
412     g_print("  --replace           Replace the currently running window "
413             "manager\n");
414     g_print("  --help              Display this help and exit\n");
415     g_print("  --version           Display the version and exit\n");
416     g_print("  --sync              Run in synchronous mode (this is slow and "
417             "meant for\n"
418             "                      debugging X routines)\n");
419     g_print("  --debug             Display debugging output\n");
420     g_print("\nPlease report bugs at %s\n\n", PACKAGE_BUGREPORT);
421 }
422
423 static void parse_args(gint argc, gchar **argv)
424 {
425     gint i;
426
427     for (i = 1; i < argc; ++i) {
428         if (!strcmp(argv[i], "--version")) {
429             print_version();
430             exit(0);
431         } else if (!strcmp(argv[i], "--help")) {
432             print_help();
433             exit(0);
434         } else if (!strcmp(argv[i], "--g-fatal-warnings")) {
435             g_log_set_always_fatal(G_LOG_LEVEL_CRITICAL);
436         } else if (!strcmp(argv[i], "--replace")) {
437             ob_replace_wm = TRUE;
438         } else if (!strcmp(argv[i], "--sync")) {
439             xsync = TRUE;
440         } else if (!strcmp(argv[i], "--debug")) {
441             ob_debug_show_output(TRUE);
442         } else if (!strcmp(argv[i], "--reconfigure")) {
443             reconfigure_and_exit = TRUE;
444         }
445     }
446 }
447
448 void ob_exit_with_error(gchar *msg)
449 {
450     g_critical(msg);
451     session_shutdown();
452     exit(EXIT_FAILURE);
453 }
454
455 void ob_restart_other(const gchar *path)
456 {
457     restart_path = g_strdup(path);
458     ob_restart();
459 }
460
461 void ob_restart()
462 {
463     restart = TRUE;
464     ob_exit(0);
465 }
466
467 void ob_reconfigure()
468 {
469     reconfigure = TRUE;
470     ob_exit(0);
471 }
472
473 void ob_exit(gint code)
474 {
475     exitcode = code;
476     ob_main_loop_exit(ob_main_loop);
477 }
478
479 Cursor ob_cursor(ObCursor cursor)
480 {
481     g_assert(cursor < OB_NUM_CURSORS);
482     return cursors[cursor];
483 }
484
485 KeyCode ob_keycode(ObKey key)
486 {
487     g_assert(key < OB_NUM_KEYS);
488     return keys[key];
489 }
490
491 ObState ob_state()
492 {
493     return state;
494 }