2 * vim:ts=4:sw=4:expandtab
9 static int xkb_event_base;
11 int xkb_current_group;
17 xcb_connection_t *conn;
18 xcb_event_handlers_t evenths;
19 xcb_property_handlers_t prophs;
20 xcb_atom_t atoms[NUM_ATOMS];
25 xcb_key_symbols_t *keysyms;
27 /* Those are our connections to X11 for use with libXcursor and XKB */
28 Display *xlibdpy, *xkbdpy;
30 /* The list of key bindings */
31 struct bindings_head *bindings;
33 /* The list of exec-lines */
34 struct autostarts_head autostarts = TAILQ_HEAD_INITIALIZER(autostarts);
36 /* The list of assignments */
37 struct assignments_head assignments = TAILQ_HEAD_INITIALIZER(assignments);
39 /* We hope that those are supported and set them to true */
40 bool xcursor_supported = true;
41 bool xkb_supported = true;
44 * This callback is only a dummy, see xcb_prepare_cb and xcb_check_cb.
45 * See also man libev(3): "ev_prepare" and "ev_check" - customise your event loop
48 static void xcb_got_event(EV_P_ struct ev_io *w, int revents) {
49 /* empty, because xcb_prepare_cb and xcb_check_cb are used */
53 * Flush before blocking (and waiting for new events)
56 static void xcb_prepare_cb(EV_P_ ev_prepare *w, int revents) {
61 * Instead of polling the X connection socket we leave this to
62 * xcb_poll_for_event() which knows better than we can ever know.
65 static void xcb_check_cb(EV_P_ ev_check *w, int revents) {
66 xcb_generic_event_t *event;
68 while ((event = xcb_poll_for_event(conn)) != NULL) {
69 xcb_event_handle(&evenths, event);
74 int main(int argc, char *argv[]) {
75 //parse_cmd("[ foo ] attach, attach ; focus");
77 char *override_configpath = NULL;
78 bool autostart = true;
79 char *layout_path = NULL;
80 bool delete_layout_path;
81 bool only_check_config = false;
82 bool force_xinerama = false;
83 xcb_intern_atom_cookie_t atom_cookies[NUM_ATOMS];
84 static struct option long_options[] = {
85 {"no-autostart", no_argument, 0, 'a'},
86 {"config", required_argument, 0, 'c'},
87 {"version", no_argument, 0, 'v'},
88 {"help", no_argument, 0, 'h'},
89 {"layout", required_argument, 0, 'L'},
90 {"restart", required_argument, 0, 0},
91 {"force-xinerama", no_argument, 0, 0},
94 int option_index = 0, opt;
96 setlocale(LC_ALL, "");
98 /* Disable output buffering to make redirects in .xsession actually useful for debugging */
99 if (!isatty(fileno(stdout)))
100 setbuf(stdout, NULL);
104 while ((opt = getopt_long(argc, argv, "c:CvaL:hld:V", long_options, &option_index)) != -1) {
107 LOG("Autostart disabled using -a\n");
111 layout_path = sstrdup(optarg);
112 delete_layout_path = false;
115 override_configpath = sstrdup(optarg);
118 LOG("Checking configuration file only (-C)\n");
119 only_check_config = true;
122 printf("i3 version " I3_VERSION " © 2009 Michael Stapelberg and contributors\n");
128 LOG("Enabling debug loglevel %s\n", optarg);
129 add_loglevel(optarg);
132 /* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */
135 if (strcmp(long_options[option_index].name, "force-xinerama") == 0) {
136 force_xinerama = true;
137 ELOG("Using Xinerama instead of RandR. This option should be "
138 "avoided at all cost because it does not refresh the list "
139 "of screens, so you cannot configure displays at runtime. "
140 "Please check if your driver really does not support RandR "
141 "and disable this option as soon as you can.\n");
143 } else if (strcmp(long_options[option_index].name, "restart") == 0) {
144 layout_path = sstrdup(optarg);
145 delete_layout_path = true;
150 fprintf(stderr, "Usage: %s [-c configfile] [-d loglevel] [-a] [-v] [-V] [-C]\n", argv[0]);
151 fprintf(stderr, "\n");
152 fprintf(stderr, "-a: disable autostart\n");
153 fprintf(stderr, "-L <layoutfile>: load the layout from <layoutfile>\n");
154 fprintf(stderr, "-v: display version and exit\n");
155 fprintf(stderr, "-V: enable verbose mode\n");
156 fprintf(stderr, "-d <loglevel>: enable debug loglevel <loglevel>\n");
157 fprintf(stderr, "-c <configfile>: use the provided configfile instead\n");
158 fprintf(stderr, "-C: check configuration file and exit\n");
159 fprintf(stderr, "--force-xinerama: Use Xinerama instead of RandR. This "
160 "option should only be used if you are stuck with the "
161 "nvidia closed source driver which does not support RandR.\n");
166 LOG("i3 (tree) version " I3_VERSION " starting\n");
168 conn = xcb_connect(NULL, &screens);
169 if (xcb_connection_has_error(conn))
170 errx(EXIT_FAILURE, "Cannot open display\n");
172 load_configuration(conn, override_configpath, false);
173 if (only_check_config) {
174 LOG("Done checking configuration file. Exiting.\n");
178 xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
179 root = root_screen->root;
180 root_depth = root_screen->root_depth;
182 uint32_t mask = XCB_CW_EVENT_MASK;
183 uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
184 XCB_EVENT_MASK_STRUCTURE_NOTIFY | /* when the user adds a screen (e.g. video
185 projector), the root window gets a
187 XCB_EVENT_MASK_POINTER_MOTION |
188 XCB_EVENT_MASK_PROPERTY_CHANGE |
189 XCB_EVENT_MASK_ENTER_WINDOW };
190 xcb_void_cookie_t cookie;
191 cookie = xcb_change_window_attributes_checked(conn, root, mask, values);
192 check_error(conn, cookie, "Another window manager seems to be running");
194 /* Place requests for the atoms we need as soon as possible */
195 #define REQUEST_ATOM(name) atom_cookies[name] = xcb_intern_atom(conn, 0, strlen(#name), #name);
197 REQUEST_ATOM(_NET_SUPPORTED);
198 REQUEST_ATOM(_NET_WM_STATE_FULLSCREEN);
199 REQUEST_ATOM(_NET_SUPPORTING_WM_CHECK);
200 REQUEST_ATOM(_NET_WM_NAME);
201 REQUEST_ATOM(_NET_WM_STATE);
202 REQUEST_ATOM(_NET_WM_WINDOW_TYPE);
203 REQUEST_ATOM(_NET_WM_DESKTOP);
204 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_DOCK);
205 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_DIALOG);
206 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_UTILITY);
207 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_TOOLBAR);
208 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_SPLASH);
209 REQUEST_ATOM(_NET_WM_STRUT_PARTIAL);
210 REQUEST_ATOM(WM_PROTOCOLS);
211 REQUEST_ATOM(WM_DELETE_WINDOW);
212 REQUEST_ATOM(UTF8_STRING);
213 REQUEST_ATOM(WM_STATE);
214 REQUEST_ATOM(WM_CLIENT_LEADER);
215 REQUEST_ATOM(_NET_CURRENT_DESKTOP);
216 REQUEST_ATOM(_NET_ACTIVE_WINDOW);
217 REQUEST_ATOM(_NET_WORKAREA);
219 /* Initialize the Xlib connection */
220 xlibdpy = xkbdpy = XOpenDisplay(NULL);
222 /* Try to load the X cursors and initialize the XKB extension */
223 if (xlibdpy == NULL) {
224 ELOG("ERROR: XOpenDisplay() failed, disabling libXcursor/XKB support\n");
225 xcursor_supported = false;
226 xkb_supported = false;
227 } else if (fcntl(ConnectionNumber(xlibdpy), F_SETFD, FD_CLOEXEC) == -1) {
228 ELOG("Could not set FD_CLOEXEC on xkbdpy\n");
231 xcursor_load_cursors();
235 memset(&evenths, 0, sizeof(xcb_event_handlers_t));
236 memset(&prophs, 0, sizeof(xcb_property_handlers_t));
238 xcb_event_handlers_init(conn, &evenths);
239 xcb_property_handlers_init(&prophs, &evenths);
240 xcb_event_set_key_press_handler(&evenths, handle_key_press, NULL);
242 xcb_event_set_button_press_handler(&evenths, handle_button_press, NULL);
244 xcb_event_set_map_request_handler(&evenths, handle_map_request, NULL);
246 xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, NULL);
247 xcb_event_set_destroy_notify_handler(&evenths, handle_destroy_notify_event, NULL);
249 xcb_event_set_expose_handler(&evenths, handle_expose_event, NULL);
251 xcb_event_set_motion_notify_handler(&evenths, handle_motion_notify, NULL);
253 /* Enter window = user moved his mouse over the window */
254 xcb_event_set_enter_notify_handler(&evenths, handle_enter_notify, NULL);
256 /* Client message are sent to the root window. The only interesting client message
257 for us is _NET_WM_STATE, we honour _NET_WM_STATE_FULLSCREEN */
258 xcb_event_set_client_message_handler(&evenths, handle_client_message, NULL);
260 /* Configure request = window tried to change size on its own */
261 xcb_event_set_configure_request_handler(&evenths, handle_configure_request, NULL);
263 /* Setup NetWM atoms */
264 #define GET_ATOM(name) \
266 xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, atom_cookies[name], NULL); \
268 ELOG("Could not get atom " #name "\n"); \
271 atoms[name] = reply->atom; \
275 GET_ATOM(_NET_SUPPORTED);
276 GET_ATOM(_NET_WM_STATE_FULLSCREEN);
277 GET_ATOM(_NET_SUPPORTING_WM_CHECK);
278 GET_ATOM(_NET_WM_NAME);
279 GET_ATOM(_NET_WM_STATE);
280 GET_ATOM(_NET_WM_WINDOW_TYPE);
281 GET_ATOM(_NET_WM_DESKTOP);
282 GET_ATOM(_NET_WM_WINDOW_TYPE_DOCK);
283 GET_ATOM(_NET_WM_WINDOW_TYPE_DIALOG);
284 GET_ATOM(_NET_WM_WINDOW_TYPE_UTILITY);
285 GET_ATOM(_NET_WM_WINDOW_TYPE_TOOLBAR);
286 GET_ATOM(_NET_WM_WINDOW_TYPE_SPLASH);
287 GET_ATOM(_NET_WM_STRUT_PARTIAL);
288 GET_ATOM(WM_PROTOCOLS);
289 GET_ATOM(WM_DELETE_WINDOW);
290 GET_ATOM(UTF8_STRING);
292 GET_ATOM(WM_CLIENT_LEADER);
293 GET_ATOM(_NET_CURRENT_DESKTOP);
294 GET_ATOM(_NET_ACTIVE_WINDOW);
295 GET_ATOM(_NET_WORKAREA);
297 /* Watch _NET_WM_NAME (title of the window encoded in UTF-8) */
298 xcb_property_set_handler(&prophs, atoms[_NET_WM_NAME], 128, handle_windowname_change, NULL);
300 /* Watch WM_HINTS (contains the urgent property) */
301 xcb_property_set_handler(&prophs, WM_HINTS, UINT_MAX, handle_hints, NULL);
303 /* Watch WM_NAME (title of the window encoded in COMPOUND_TEXT) */
304 xcb_watch_wm_name(&prophs, 128, handle_windowname_change_legacy, NULL);
306 /* Watch WM_NORMAL_HINTS (aspect ratio, size increments, …) */
307 xcb_property_set_handler(&prophs, WM_NORMAL_HINTS, UINT_MAX, handle_normal_hints, NULL);
309 /* Watch WM_CLIENT_LEADER (= logical parent window for toolbars etc.) */
310 xcb_property_set_handler(&prophs, atoms[WM_CLIENT_LEADER], UINT_MAX, handle_clientleader_change, NULL);
312 /* Watch WM_TRANSIENT_FOR property (to which client this popup window belongs) */
313 xcb_property_set_handler(&prophs, WM_TRANSIENT_FOR, UINT_MAX, handle_transient_for, NULL);
315 /* Set up the atoms we support */
316 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTED], ATOM, 32, 7, atoms);
317 /* Set up the window manager’s name */
318 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTING_WM_CHECK], WINDOW, 32, 1, &root);
319 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_WM_NAME], atoms[UTF8_STRING], 8, strlen("i3"), "i3");
321 keysyms = xcb_key_symbols_alloc(conn);
323 xcb_get_numlock_mask(conn);
326 grab_all_keys(conn, false);
329 if (force_xinerama) {
332 DLOG("Checking for XRandR...\n");
333 randr_init(&randr_base);
336 xcb_event_set_handler(&evenths,
337 randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY,
338 handle_screen_change,
343 bool needs_tree_init = true;
345 LOG("Trying to restore the layout from %s...", layout_path);
346 needs_tree_init = !tree_restore(layout_path);
347 if (delete_layout_path)
355 struct ev_loop *loop = ev_loop_new(0);
357 die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
359 /* Create the UNIX domain socket for IPC */
360 if (config.ipc_socket_path != NULL) {
361 int ipc_socket = ipc_create_socket(config.ipc_socket_path);
362 if (ipc_socket == -1) {
363 ELOG("Could not create the IPC socket, IPC disabled\n");
365 struct ev_io *ipc_io = scalloc(sizeof(struct ev_io));
366 ev_io_init(ipc_io, ipc_new_client, ipc_socket, EV_READ);
367 ev_io_start(loop, ipc_io);
371 struct ev_io *xcb_watcher = scalloc(sizeof(struct ev_io));
372 struct ev_check *xcb_check = scalloc(sizeof(struct ev_check));
373 struct ev_prepare *xcb_prepare = scalloc(sizeof(struct ev_prepare));
375 ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
376 ev_io_start(loop, xcb_watcher);
378 ev_check_init(xcb_check, xcb_check_cb);
379 ev_check_start(loop, xcb_check);
381 ev_prepare_init(xcb_prepare, xcb_prepare_cb);
382 ev_prepare_start(loop, xcb_prepare);
386 manage_existing_windows(root);
388 setup_signal_handler();
390 /* Ignore SIGPIPE to survive errors when an IPC client disconnects
391 * while we are sending him a message */
392 signal(SIGPIPE, SIG_IGN);
394 /* Autostarting exec-lines */
396 struct Autostart *exec;
397 TAILQ_FOREACH(exec, &autostarts, autostarts) {
398 LOG("auto-starting %s\n", exec->command);
399 start_application(exec->command);