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);
102 config.ipc_socket_path = getenv("I3SOCK");
106 while ((opt = getopt_long(argc, argv, "c:CvaL:hld:V", long_options, &option_index)) != -1) {
109 LOG("Autostart disabled using -a\n");
114 layout_path = sstrdup(optarg);
115 delete_layout_path = false;
118 FREE(override_configpath);
119 override_configpath = sstrdup(optarg);
122 LOG("Checking configuration file only (-C)\n");
123 only_check_config = true;
126 printf("i3 version " I3_VERSION " © 2009 Michael Stapelberg and contributors\n");
132 LOG("Enabling debug loglevel %s\n", optarg);
133 add_loglevel(optarg);
136 /* DEPRECATED, ignored for the next 3 versions (3.e, 3.f, 3.g) */
139 if (strcmp(long_options[option_index].name, "force-xinerama") == 0) {
140 force_xinerama = true;
141 ELOG("Using Xinerama instead of RandR. This option should be "
142 "avoided at all cost because it does not refresh the list "
143 "of screens, so you cannot configure displays at runtime. "
144 "Please check if your driver really does not support RandR "
145 "and disable this option as soon as you can.\n");
147 } else if (strcmp(long_options[option_index].name, "restart") == 0) {
149 layout_path = sstrdup(optarg);
150 delete_layout_path = true;
155 fprintf(stderr, "Usage: %s [-c configfile] [-d loglevel] [-a] [-v] [-V] [-C]\n", argv[0]);
156 fprintf(stderr, "\n");
157 fprintf(stderr, "-a: disable autostart\n");
158 fprintf(stderr, "-L <layoutfile>: load the layout from <layoutfile>\n");
159 fprintf(stderr, "-v: display version and exit\n");
160 fprintf(stderr, "-V: enable verbose mode\n");
161 fprintf(stderr, "-d <loglevel>: enable debug loglevel <loglevel>\n");
162 fprintf(stderr, "-c <configfile>: use the provided configfile instead\n");
163 fprintf(stderr, "-C: check configuration file and exit\n");
164 fprintf(stderr, "--force-xinerama: Use Xinerama instead of RandR. This "
165 "option should only be used if you are stuck with the "
166 "nvidia closed source driver which does not support RandR.\n");
171 LOG("i3 (tree) version " I3_VERSION " starting\n");
173 conn = xcb_connect(NULL, &screens);
174 if (xcb_connection_has_error(conn))
175 errx(EXIT_FAILURE, "Cannot open display\n");
177 load_configuration(conn, override_configpath, false);
178 if (only_check_config) {
179 LOG("Done checking configuration file. Exiting.\n");
183 xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screens);
184 root = root_screen->root;
185 root_depth = root_screen->root_depth;
187 uint32_t mask = XCB_CW_EVENT_MASK;
188 uint32_t values[] = { XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
189 XCB_EVENT_MASK_STRUCTURE_NOTIFY | /* when the user adds a screen (e.g. video
190 projector), the root window gets a
192 XCB_EVENT_MASK_POINTER_MOTION |
193 XCB_EVENT_MASK_PROPERTY_CHANGE |
194 XCB_EVENT_MASK_ENTER_WINDOW };
195 xcb_void_cookie_t cookie;
196 cookie = xcb_change_window_attributes_checked(conn, root, mask, values);
197 check_error(conn, cookie, "Another window manager seems to be running");
199 /* Place requests for the atoms we need as soon as possible */
200 #define REQUEST_ATOM(name) atom_cookies[name] = xcb_intern_atom(conn, 0, strlen(#name), #name);
202 REQUEST_ATOM(_NET_SUPPORTED);
203 REQUEST_ATOM(_NET_WM_STATE_FULLSCREEN);
204 REQUEST_ATOM(_NET_SUPPORTING_WM_CHECK);
205 REQUEST_ATOM(_NET_WM_NAME);
206 REQUEST_ATOM(_NET_WM_STATE);
207 REQUEST_ATOM(_NET_WM_WINDOW_TYPE);
208 REQUEST_ATOM(_NET_WM_DESKTOP);
209 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_DOCK);
210 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_DIALOG);
211 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_UTILITY);
212 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_TOOLBAR);
213 REQUEST_ATOM(_NET_WM_WINDOW_TYPE_SPLASH);
214 REQUEST_ATOM(_NET_WM_STRUT_PARTIAL);
215 REQUEST_ATOM(WM_PROTOCOLS);
216 REQUEST_ATOM(WM_DELETE_WINDOW);
217 REQUEST_ATOM(UTF8_STRING);
218 REQUEST_ATOM(WM_STATE);
219 REQUEST_ATOM(WM_CLIENT_LEADER);
220 REQUEST_ATOM(_NET_CURRENT_DESKTOP);
221 REQUEST_ATOM(_NET_ACTIVE_WINDOW);
222 REQUEST_ATOM(_NET_WORKAREA);
224 /* Initialize the Xlib connection */
225 xlibdpy = xkbdpy = XOpenDisplay(NULL);
227 /* Try to load the X cursors and initialize the XKB extension */
228 if (xlibdpy == NULL) {
229 ELOG("ERROR: XOpenDisplay() failed, disabling libXcursor/XKB support\n");
230 xcursor_supported = false;
231 xkb_supported = false;
232 } else if (fcntl(ConnectionNumber(xlibdpy), F_SETFD, FD_CLOEXEC) == -1) {
233 ELOG("Could not set FD_CLOEXEC on xkbdpy\n");
236 xcursor_load_cursors();
240 memset(&evenths, 0, sizeof(xcb_event_handlers_t));
241 memset(&prophs, 0, sizeof(xcb_property_handlers_t));
243 xcb_event_handlers_init(conn, &evenths);
244 xcb_property_handlers_init(&prophs, &evenths);
245 xcb_event_set_key_press_handler(&evenths, handle_key_press, NULL);
247 xcb_event_set_button_press_handler(&evenths, handle_button_press, NULL);
249 xcb_event_set_map_request_handler(&evenths, handle_map_request, NULL);
251 xcb_event_set_unmap_notify_handler(&evenths, handle_unmap_notify_event, NULL);
252 xcb_event_set_destroy_notify_handler(&evenths, handle_destroy_notify_event, NULL);
254 xcb_event_set_expose_handler(&evenths, handle_expose_event, NULL);
256 xcb_event_set_motion_notify_handler(&evenths, handle_motion_notify, NULL);
258 /* Enter window = user moved his mouse over the window */
259 xcb_event_set_enter_notify_handler(&evenths, handle_enter_notify, NULL);
261 /* Client message are sent to the root window. The only interesting client message
262 for us is _NET_WM_STATE, we honour _NET_WM_STATE_FULLSCREEN */
263 xcb_event_set_client_message_handler(&evenths, handle_client_message, NULL);
265 /* Configure request = window tried to change size on its own */
266 xcb_event_set_configure_request_handler(&evenths, handle_configure_request, NULL);
268 /* Setup NetWM atoms */
269 #define GET_ATOM(name) \
271 xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(conn, atom_cookies[name], NULL); \
273 ELOG("Could not get atom " #name "\n"); \
276 atoms[name] = reply->atom; \
280 GET_ATOM(_NET_SUPPORTED);
281 GET_ATOM(_NET_WM_STATE_FULLSCREEN);
282 GET_ATOM(_NET_SUPPORTING_WM_CHECK);
283 GET_ATOM(_NET_WM_NAME);
284 GET_ATOM(_NET_WM_STATE);
285 GET_ATOM(_NET_WM_WINDOW_TYPE);
286 GET_ATOM(_NET_WM_DESKTOP);
287 GET_ATOM(_NET_WM_WINDOW_TYPE_DOCK);
288 GET_ATOM(_NET_WM_WINDOW_TYPE_DIALOG);
289 GET_ATOM(_NET_WM_WINDOW_TYPE_UTILITY);
290 GET_ATOM(_NET_WM_WINDOW_TYPE_TOOLBAR);
291 GET_ATOM(_NET_WM_WINDOW_TYPE_SPLASH);
292 GET_ATOM(_NET_WM_STRUT_PARTIAL);
293 GET_ATOM(WM_PROTOCOLS);
294 GET_ATOM(WM_DELETE_WINDOW);
295 GET_ATOM(UTF8_STRING);
297 GET_ATOM(WM_CLIENT_LEADER);
298 GET_ATOM(_NET_CURRENT_DESKTOP);
299 GET_ATOM(_NET_ACTIVE_WINDOW);
300 GET_ATOM(_NET_WORKAREA);
302 /* Watch _NET_WM_NAME (title of the window encoded in UTF-8) */
303 xcb_property_set_handler(&prophs, atoms[_NET_WM_NAME], 128, handle_windowname_change, NULL);
305 /* Watch WM_HINTS (contains the urgent property) */
306 xcb_property_set_handler(&prophs, WM_HINTS, UINT_MAX, handle_hints, NULL);
308 /* Watch WM_NAME (title of the window encoded in COMPOUND_TEXT) */
309 xcb_watch_wm_name(&prophs, 128, handle_windowname_change_legacy, NULL);
311 /* Watch WM_NORMAL_HINTS (aspect ratio, size increments, …) */
312 xcb_property_set_handler(&prophs, WM_NORMAL_HINTS, UINT_MAX, handle_normal_hints, NULL);
314 /* Watch WM_CLIENT_LEADER (= logical parent window for toolbars etc.) */
315 xcb_property_set_handler(&prophs, atoms[WM_CLIENT_LEADER], UINT_MAX, handle_clientleader_change, NULL);
317 /* Watch WM_TRANSIENT_FOR property (to which client this popup window belongs) */
318 xcb_property_set_handler(&prophs, WM_TRANSIENT_FOR, UINT_MAX, handle_transient_for, NULL);
320 /* Set up the atoms we support */
321 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTED], ATOM, 32, 7, atoms);
322 /* Set up the window manager’s name */
323 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_SUPPORTING_WM_CHECK], WINDOW, 32, 1, &root);
324 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, atoms[_NET_WM_NAME], atoms[UTF8_STRING], 8, strlen("i3"), "i3");
326 keysyms = xcb_key_symbols_alloc(conn);
328 xcb_get_numlock_mask(conn);
331 grab_all_keys(conn, false);
333 bool needs_tree_init = true;
335 LOG("Trying to restore the layout from %s...", layout_path);
336 needs_tree_init = !tree_restore(layout_path);
337 if (delete_layout_path)
345 if (force_xinerama) {
348 DLOG("Checking for XRandR...\n");
349 randr_init(&randr_base);
351 xcb_event_set_handler(&evenths,
352 randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY,
353 handle_screen_change,
359 struct ev_loop *loop = ev_loop_new(0);
361 die("Could not initialize libev. Bad LIBEV_FLAGS?\n");
363 /* Create the UNIX domain socket for IPC */
364 if (config.ipc_socket_path != NULL) {
365 int ipc_socket = ipc_create_socket(config.ipc_socket_path);
366 if (ipc_socket == -1) {
367 ELOG("Could not create the IPC socket, IPC disabled\n");
369 struct ev_io *ipc_io = scalloc(sizeof(struct ev_io));
370 ev_io_init(ipc_io, ipc_new_client, ipc_socket, EV_READ);
371 ev_io_start(loop, ipc_io);
375 struct ev_io *xcb_watcher = scalloc(sizeof(struct ev_io));
376 struct ev_check *xcb_check = scalloc(sizeof(struct ev_check));
377 struct ev_prepare *xcb_prepare = scalloc(sizeof(struct ev_prepare));
379 ev_io_init(xcb_watcher, xcb_got_event, xcb_get_file_descriptor(conn), EV_READ);
380 ev_io_start(loop, xcb_watcher);
382 ev_check_init(xcb_check, xcb_check_cb);
383 ev_check_start(loop, xcb_check);
385 ev_prepare_init(xcb_prepare, xcb_prepare_cb);
386 ev_prepare_start(loop, xcb_prepare);
390 manage_existing_windows(root);
392 setup_signal_handler();
394 /* Ignore SIGPIPE to survive errors when an IPC client disconnects
395 * while we are sending him a message */
396 signal(SIGPIPE, SIG_IGN);
398 /* Autostarting exec-lines */
400 struct Autostart *exec;
401 TAILQ_FOREACH(exec, &autostarts, autostarts) {
402 LOG("auto-starting %s\n", exec->command);
403 start_application(exec->command);