2 * awesome.c - awesome main functions
4 * Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
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.
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.
16 * You should have received a copy of the GNU General Public License along
17 * with this program; if not, write to the Free Software Foundation, Inc.,
18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
31 #include <xcb/xcb_event.h>
43 #include "common/version.h"
44 #include "common/atoms.h"
45 #include "common/xcursor.h"
53 xcb_query_tree_cookie_t tree_cookie
;
56 /** Call before exiting.
67 /* reparent systray windows, otherwise they may die with their master */
68 for(int i
= 0; i
< globalconf
.embedded
.len
; i
++)
70 xcb_screen_t
*s
= xutil_screen_get(globalconf
.connection
,
71 globalconf
.embedded
.tab
[i
].phys_screen
);
72 xembed_window_unembed(globalconf
.connection
, globalconf
.embedded
.tab
[i
].win
, s
->root
);
75 /* do this only for real screen */
77 screen_nbr
< xcb_setup_roots_length(xcb_get_setup(globalconf
.connection
));
79 systray_cleanup(screen_nbr
);
81 /* remap all clients since some WM won't handle them otherwise */
82 for(c
= globalconf
.clients
; c
; c
= c
->next
)
85 titlebar_client_detach(c
);
88 xcb_flush(globalconf
.connection
);
90 xcb_disconnect(globalconf
.connection
);
93 /** Scan X to find windows to manage.
98 int i
, screen
, phys_screen
, tree_c_len
;
99 const int screen_max
= xcb_setup_roots_length(xcb_get_setup(globalconf
.connection
));
100 root_win_t root_wins
[screen_max
];
101 xcb_query_tree_reply_t
*tree_r
;
102 xcb_window_t
*wins
= NULL
;
103 xcb_get_window_attributes_reply_t
*attr_r
;
104 xcb_get_geometry_reply_t
*geom_r
;
107 for(phys_screen
= 0; phys_screen
< screen_max
; phys_screen
++)
109 /* Get the root window ID associated to this screen */
110 root_wins
[phys_screen
].id
= xutil_screen_get(globalconf
.connection
, phys_screen
)->root
;
112 /* Get the window tree associated to this screen */
113 root_wins
[phys_screen
].tree_cookie
= xcb_query_tree_unchecked(globalconf
.connection
,
114 root_wins
[phys_screen
].id
);
117 for(phys_screen
= 0; phys_screen
< screen_max
; phys_screen
++)
119 tree_r
= xcb_query_tree_reply(globalconf
.connection
,
120 root_wins
[phys_screen
].tree_cookie
,
126 /* Get the tree of the children windows of the current root window */
127 if(!(wins
= xcb_query_tree_children(tree_r
)))
128 fatal("E: cannot get tree children");
130 tree_c_len
= xcb_query_tree_children_length(tree_r
);
131 xcb_get_window_attributes_cookie_t attr_wins
[tree_c_len
];
132 xcb_get_property_cookie_t state_wins
[tree_c_len
];
134 for(i
= 0; i
< tree_c_len
; i
++)
136 attr_wins
[i
] = xcb_get_window_attributes_unchecked(globalconf
.connection
,
139 state_wins
[i
] = window_state_get_unchecked(wins
[i
]);
142 xcb_get_geometry_cookie_t
*geom_wins
[tree_c_len
];
144 for(i
= 0; i
< tree_c_len
; i
++)
146 bool has_awesome_prop
;
148 attr_r
= xcb_get_window_attributes_reply(globalconf
.connection
,
152 state
= window_state_get_reply(state_wins
[i
]);
154 has_awesome_prop
= xutil_text_prop_get(globalconf
.connection
, wins
[i
],
155 _AWESOME_TAGS
, NULL
, NULL
);
157 if(!attr_r
|| attr_r
->override_redirect
158 || (attr_r
->map_state
!= XCB_MAP_STATE_VIEWABLE
&& !has_awesome_prop
)
159 || (state
== XCB_WM_STATE_WITHDRAWN
&& !has_awesome_prop
))
168 /* Get the geometry of the current window */
169 geom_wins
[i
] = p_alloca(xcb_get_geometry_cookie_t
, 1);
170 *(geom_wins
[i
]) = xcb_get_geometry_unchecked(globalconf
.connection
, wins
[i
]);
173 for(i
= 0; i
< tree_c_len
; i
++)
175 if(!geom_wins
[i
] || !(geom_r
= xcb_get_geometry_reply(globalconf
.connection
,
176 *(geom_wins
[i
]), NULL
)))
179 screen
= screen_getbycoord(phys_screen
, geom_r
->x
, geom_r
->y
);
181 client_manage(wins
[i
], geom_r
, phys_screen
, screen
);
191 a_xcb_check_cb(EV_P_ ev_check
*w
, int revents
)
193 xcb_event_poll_for_event_loop(&globalconf
.evenths
);
194 awesome_refresh(globalconf
.connection
);
198 a_xcb_io_cb(EV_P_ ev_io
*w
, int revents
)
203 /** Startup Error handler to check if another window manager
204 * is already running.
205 * \param data Additional optional parameters data.
206 * \param c X connection.
207 * \param error Error event.
209 static int __attribute__ ((noreturn
))
210 xerrorstart(void * data
__attribute__ ((unused
)),
211 xcb_connection_t
* c
__attribute__ ((unused
)),
212 xcb_generic_error_t
* error
__attribute__ ((unused
)))
214 fatal("another window manager is already running");
217 /** Function to exit on some signals.
218 * \param sig the signal received, unused
221 exit_on_signal(EV_P_ ev_signal
*w
, int revents
)
227 awesome_restart(void)
230 a_exec(globalconf
.argv
);
233 /** Function to restart aweome on some signals.
234 * \param sig the signam received, unused
237 restart_on_signal(EV_P_ ev_signal
*w
, int revents
)
242 /** \brief awesome xerror function.
243 * There's no way to check accesses to destroyed windows, thus those cases are
244 * ignored (especially on UnmapNotify's). Other types of errors call Xlibs
245 * default error handler, which may call exit.
246 * \param data Currently unused.
247 * \param c The connectiont to the X server.
248 * \param e The error event.
249 * \return 0 if no error, or xerror's xlib return status.
252 xerror(void *data
__attribute__ ((unused
)),
253 xcb_connection_t
*c
__attribute__ ((unused
)),
254 xcb_generic_error_t
*e
)
258 if(!xutil_error_init(e
, &err
))
262 if(e
->error_code
== XUTIL_BAD_WINDOW
263 || (e
->error_code
== XUTIL_BAD_MATCH
&& err
.request_code
== XCB_SET_INPUT_FOCUS
)
264 || (e
->error_code
== XUTIL_BAD_VALUE
&& err
.request_code
== XCB_KILL_CLIENT
)
265 || (err
.request_code
== XCB_CONFIGURE_WINDOW
&& e
->error_code
== XUTIL_BAD_MATCH
))
268 warn("X error: request=%s, error=%s", err
.request_label
, err
.error_label
);
271 * Xlib code was using default X error handler, namely
272 * '_XDefaultError()', which displays more informations about the
273 * error and also exit if 'error_code'' equals to
274 * 'BadImplementation'
276 * \todo display more informations about the error (like the Xlib default error handler)
278 if(e
->error_code
== XUTIL_BAD_IMPLEMENTATION
)
279 fatal("X error: request=%s, error=%s", err
.request_label
, err
.error_label
);
282 xutil_error_wipe(&err
);
286 /** Print help and exit(2) with given exit_code.
287 * \param exit_code The exit code.
289 static void __attribute__ ((noreturn
))
290 exit_help(int exit_code
)
292 FILE *outfile
= (exit_code
== EXIT_SUCCESS
) ? stdout
: stderr
;
294 "Usage: awesome [OPTION]\n\
295 -h, --help show help\n\
296 -v, --version show version\n\
297 -c, --config FILE configuration file to use\n\
298 -k, --check check configuration file syntax\n");
302 /** Hello, this is main.
303 * \param argc Who knows.
304 * \param argv Who knows.
305 * \return EXIT_SUCCESS I hope.
308 main(int argc
, char **argv
)
310 const char *confpath
= NULL
;
311 int xfd
, i
, screen_nbr
, opt
, colors_nbr
;
312 xcolor_init_request_t colors_reqs
[2];
313 xcb_get_modifier_mapping_cookie_t xmapping_cookie
;
315 static struct option long_options
[] =
317 { "help", 0, NULL
, 'h' },
318 { "version", 0, NULL
, 'v' },
319 { "config", 1, NULL
, 'c' },
320 { "check", 0, NULL
, 'k' },
324 /* event loop watchers */
325 ev_io xio
= { .fd
= -1 };
331 /* clear the globalconf structure */
332 p_clear(&globalconf
, 1);
333 globalconf
.keygrabber
= LUA_REFNIL
;
334 globalconf
.mousegrabber
= LUA_REFNIL
;
337 for(i
= 0; i
< argc
; i
++)
338 cmdlen
+= a_strlen(argv
[i
]) + 1;
340 globalconf
.argv
= p_new(char, cmdlen
);
341 a_strcpy(globalconf
.argv
, cmdlen
, argv
[0]);
343 for(i
= 1; i
< argc
; i
++)
345 a_strcat(globalconf
.argv
, cmdlen
, " ");
346 a_strcat(globalconf
.argv
, cmdlen
, argv
[i
]);
349 /* Text won't be printed correctly otherwise */
350 setlocale(LC_CTYPE
, "");
356 while((opt
= getopt_long(argc
, argv
, "vhkc:",
357 long_options
, NULL
)) != -1)
361 eprint_version("awesome");
364 exit_help(EXIT_SUCCESS
);
367 if(!luaA_parserc(confpath
, false))
369 fprintf(stderr
, "✘ Configuration file syntax error.\n");
374 fprintf(stderr
, "✔ Configuration file syntax OK.\n");
379 confpath
= a_strdup(optarg
);
381 fatal("-c option requires a file name");
385 globalconf
.loop
= ev_default_loop(0);
386 ev_timer_init(&globalconf
.timer
, &luaA_on_timer
, 0., 0.);
388 /* register function for signals */
389 ev_signal_init(&sigint
, exit_on_signal
, SIGINT
);
390 ev_signal_init(&sigterm
, exit_on_signal
, SIGTERM
);
391 ev_signal_init(&sighup
, restart_on_signal
, SIGHUP
);
392 ev_signal_start(globalconf
.loop
, &sigint
);
393 ev_signal_start(globalconf
.loop
, &sigterm
);
394 ev_signal_start(globalconf
.loop
, &sighup
);
395 ev_unref(globalconf
.loop
);
396 ev_unref(globalconf
.loop
);
397 ev_unref(globalconf
.loop
);
400 globalconf
.connection
= xcb_connect(NULL
, &globalconf
.default_screen
);
401 if(xcb_connection_has_error(globalconf
.connection
))
402 fatal("cannot open display");
404 /* initiliaze dbus */
408 xcb_grab_server(globalconf
.connection
);
409 xcb_flush(globalconf
.connection
);
411 /* Get the file descriptor corresponding to the X connection */
412 xfd
= xcb_get_file_descriptor(globalconf
.connection
);
413 ev_io_init(&xio
, &a_xcb_io_cb
, xfd
, EV_READ
);
414 ev_io_start(globalconf
.loop
, &xio
);
415 ev_check_init(&xcheck
, &a_xcb_check_cb
);
416 ev_check_start(globalconf
.loop
, &xcheck
);
417 ev_unref(globalconf
.loop
);
419 /* Allocate a handler which will holds all errors and events */
420 xcb_event_handlers_init(globalconf
.connection
, &globalconf
.evenths
);
421 xutil_error_handler_catch_all_set(&globalconf
.evenths
, xerrorstart
, NULL
);
424 screen_nbr
< xcb_setup_roots_length(xcb_get_setup(globalconf
.connection
));
427 const uint32_t select_input_val
= XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
;
429 /* This causes an error if some other window manager is running */
430 xcb_change_window_attributes(globalconf
.connection
,
431 xutil_screen_get(globalconf
.connection
, screen_nbr
)->root
,
432 XCB_CW_EVENT_MASK
, &select_input_val
);
435 /* Need to xcb_flush to validate error handler */
436 xcb_aux_sync(globalconf
.connection
);
438 /* Process all errors in the queue if any */
439 xcb_event_poll_for_event_loop(&globalconf
.evenths
);
441 /* Set the default xerror handler */
442 xutil_error_handler_catch_all_set(&globalconf
.evenths
, xerror
, NULL
);
444 /* Allocate the key symbols */
445 globalconf
.keysyms
= xcb_key_symbols_alloc(globalconf
.connection
);
447 /* Send the request to get the NumLock, ShiftLock and CapsLock
449 xmapping_cookie
= xcb_get_modifier_mapping_unchecked(globalconf
.connection
);
451 /* init atom cache */
452 atoms_init(globalconf
.connection
);
454 /* init screens information */
457 /* init default font and colors */
458 colors_reqs
[0] = xcolor_init_unchecked(&globalconf
.colors
.fg
,
459 "black", sizeof("black") - 1);
461 colors_reqs
[1] = xcolor_init_unchecked(&globalconf
.colors
.bg
,
462 "white", sizeof("white") - 1);
464 globalconf
.font
= draw_font_new("sans 8");
466 for(colors_nbr
= 0; colors_nbr
< 2; colors_nbr
++)
467 xcolor_init_reply(colors_reqs
[colors_nbr
]);
469 /* Process the reply of previously sent mapping request */
470 xutil_lock_mask_get(globalconf
.connection
, xmapping_cookie
,
471 globalconf
.keysyms
, &globalconf
.numlockmask
,
472 &globalconf
.shiftlockmask
, &globalconf
.capslockmask
);
474 /* do this only for real screen */
476 screen_nbr
< xcb_setup_roots_length(xcb_get_setup(globalconf
.connection
));
479 /* select for events */
480 const uint32_t change_win_vals
[] =
482 XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT
| XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY
483 | XCB_EVENT_MASK_ENTER_WINDOW
| XCB_EVENT_MASK_LEAVE_WINDOW
484 | XCB_EVENT_MASK_STRUCTURE_NOTIFY
485 | XCB_EVENT_MASK_PROPERTY_CHANGE
,
486 xcursor_new(globalconf
.connection
, XC_left_ptr
)
489 xcb_change_window_attributes(globalconf
.connection
,
490 xutil_screen_get(globalconf
.connection
, screen_nbr
)->root
,
491 XCB_CW_EVENT_MASK
| XCB_CW_CURSOR
,
493 ewmh_init(screen_nbr
);
494 systray_init(screen_nbr
);
497 /* Parse and run configuration file */
498 luaA_parserc(confpath
, true);
500 /* scan existing windows */
503 /* process all errors in the queue if any */
504 xcb_event_poll_for_event_loop(&globalconf
.evenths
);
505 a_xcb_set_event_handlers();
506 a_xcb_set_property_handlers();
508 /* we will receive events, stop grabbing server */
509 xcb_ungrab_server(globalconf
.connection
);
513 /* refresh everything before waiting events */
514 awesome_refresh(globalconf
.connection
);
516 /* main event loop */
517 ev_loop(globalconf
.loop
, 0);
519 /* cleanup event loop */
520 ev_ref(globalconf
.loop
);
521 ev_check_stop(globalconf
.loop
, &xcheck
);
522 ev_ref(globalconf
.loop
);
523 ev_io_stop(globalconf
.loop
, &xio
);
530 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80