2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
7 * bindings.c: Functions for configuring, finding and, running bindings.
11 #include <xkbcommon/xkbcommon.h>
12 #include <xkbcommon/xkbcommon-x11.h>
14 static struct xkb_context *xkb_context;
15 static struct xkb_keymap *xkb_keymap;
17 pid_t command_error_nagbar_pid = -1;
20 * The name of the default mode.
23 const char *DEFAULT_BINDING_MODE = "default";
26 * Returns the mode specified by `name` or creates a new mode and adds it to
30 static struct Mode *mode_from_name(const char *name, bool pango_markup) {
33 /* Try to find the mode in the list of modes and return it */
34 SLIST_FOREACH(mode, &modes, modes) {
35 if (strcmp(mode->name, name) == 0)
39 /* If the mode was not found, create a new one */
40 mode = scalloc(1, sizeof(struct Mode));
41 mode->name = sstrdup(name);
42 mode->pango_markup = pango_markup;
43 mode->bindings = scalloc(1, sizeof(struct bindings_head));
44 TAILQ_INIT(mode->bindings);
45 SLIST_INSERT_HEAD(&modes, mode, modes);
51 * Adds a binding from config parameters given as strings and returns a
52 * pointer to the binding structure. Returns NULL if the input code could not
56 Binding *configure_binding(const char *bindtype, const char *modifiers, const char *input_code,
57 const char *release, const char *border, const char *whole_window,
58 const char *command, const char *modename, bool pango_markup) {
59 Binding *new_binding = scalloc(1, sizeof(Binding));
60 DLOG("bindtype %s, modifiers %s, input code %s, release %s\n", bindtype, modifiers, input_code, release);
61 new_binding->release = (release != NULL ? B_UPON_KEYRELEASE : B_UPON_KEYPRESS);
62 new_binding->border = (border != NULL);
63 new_binding->whole_window = (whole_window != NULL);
64 if (strcmp(bindtype, "bindsym") == 0) {
65 new_binding->input_type = (strncasecmp(input_code, "button", (sizeof("button") - 1)) == 0
69 new_binding->symbol = sstrdup(input_code);
72 long keycode = strtol(input_code, &endptr, 10);
73 new_binding->keycode = keycode;
74 new_binding->input_type = B_KEYBOARD;
75 if (keycode == LONG_MAX || keycode == LONG_MIN || keycode < 0 || *endptr != '\0' || endptr == input_code) {
76 ELOG("Could not parse \"%s\" as an input code, ignoring this binding.\n", input_code);
81 new_binding->command = sstrdup(command);
82 new_binding->event_state_mask = event_state_from_str(modifiers);
83 int group_bits_set = 0;
84 if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_1)
86 if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_2)
88 if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_3)
90 if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_4)
92 if (group_bits_set > 1)
93 ELOG("Keybinding has more than one Group specified, but your X server is always in precisely one group. The keybinding can never trigger.\n");
95 struct Mode *mode = mode_from_name(modename, pango_markup);
96 TAILQ_INSERT_TAIL(mode->bindings, new_binding, bindings);
101 static void grab_keycode_for_binding(xcb_connection_t *conn, Binding *bind, uint32_t keycode) {
102 if (bind->input_type != B_KEYBOARD)
105 /* Grab the key in all combinations */
106 #define GRAB_KEY(modifier) \
108 xcb_grab_key(conn, 0, root, modifier, keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC); \
110 int mods = bind->event_state_mask;
111 if (((mods >> 16) & I3_XKB_GROUP_MASK_1) && xkb_current_group != XCB_XKB_GROUP_1)
113 if (((mods >> 16) & I3_XKB_GROUP_MASK_2) && xkb_current_group != XCB_XKB_GROUP_2)
115 if (((mods >> 16) & I3_XKB_GROUP_MASK_3) && xkb_current_group != XCB_XKB_GROUP_3)
117 if (((mods >> 16) & I3_XKB_GROUP_MASK_4) && xkb_current_group != XCB_XKB_GROUP_4)
120 DLOG("Grabbing keycode %d with event state mask 0x%x (mods 0x%x)\n",
121 keycode, bind->event_state_mask, mods);
123 GRAB_KEY(mods | xcb_numlock_mask);
124 GRAB_KEY(mods | XCB_MOD_MASK_LOCK);
125 GRAB_KEY(mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
129 * Grab the bound keys (tell X to send us keypress events for those keycodes)
132 void grab_all_keys(xcb_connection_t *conn) {
134 TAILQ_FOREACH(bind, bindings, bindings) {
135 if (bind->input_type != B_KEYBOARD)
138 /* The easy case: the user specified a keycode directly. */
139 if (bind->keycode > 0) {
140 grab_keycode_for_binding(conn, bind, bind->keycode);
144 for (uint32_t i = 0; i < bind->number_keycodes; i++)
145 grab_keycode_for_binding(conn, bind, bind->translated_to[i]);
150 * Release the button grabs on all managed windows and regrab them,
151 * reevaluating which buttons need to be grabbed.
154 void regrab_all_buttons(xcb_connection_t *conn) {
155 bool grab_scrollwheel = bindings_should_grab_scrollwheel_buttons();
156 xcb_grab_server(conn);
159 TAILQ_FOREACH(con, &all_cons, all_cons) {
160 if (con->window == NULL)
163 xcb_ungrab_button(conn, XCB_BUTTON_INDEX_ANY, con->window->id, XCB_BUTTON_MASK_ANY);
164 xcb_grab_buttons(conn, con->window->id, grab_scrollwheel);
167 xcb_ungrab_server(conn);
171 * Returns a pointer to the Binding with the specified modifiers and
172 * keycode or NULL if no such binding exists.
175 static Binding *get_binding(i3_event_state_mask_t state_filtered, bool is_release, uint16_t input_code, input_type_t input_type) {
179 /* On a press event, we first reset all B_UPON_KEYRELEASE_IGNORE_MODS
180 * bindings back to B_UPON_KEYRELEASE */
181 TAILQ_FOREACH(bind, bindings, bindings) {
182 if (bind->input_type != input_type)
184 if (bind->release == B_UPON_KEYRELEASE_IGNORE_MODS)
185 bind->release = B_UPON_KEYRELEASE;
189 TAILQ_FOREACH(bind, bindings, bindings) {
191 if ((bind->event_state_mask & 0xFFFF) == 0) {
192 /* Verify no modifiers are pressed. A bitwise AND would lead to
193 * false positives, see issue #2002. */
194 state_matches = (state_filtered == bind->event_state_mask);
196 state_matches = ((state_filtered & bind->event_state_mask) == bind->event_state_mask);
199 DLOG("binding with event_state_mask 0x%x, state_filtered 0x%x, match: %s\n",
200 bind->event_state_mask, state_filtered, (state_matches ? "yes" : "no"));
201 /* First compare the state_filtered (unless this is a
202 * B_UPON_KEYRELEASE_IGNORE_MODS binding and this is a KeyRelease
204 if (bind->input_type != input_type)
206 if (!state_matches &&
207 (bind->release != B_UPON_KEYRELEASE_IGNORE_MODS ||
211 /* For keyboard bindings where a symbol was specified by the user, we
212 * need to look in the array of translated keycodes for the event’s
214 if (input_type == B_KEYBOARD && bind->symbol != NULL) {
215 xcb_keycode_t input_keycode = (xcb_keycode_t)input_code;
216 if (memmem(bind->translated_to,
217 bind->number_keycodes * sizeof(xcb_keycode_t),
218 &input_keycode, sizeof(xcb_keycode_t)) == NULL)
221 /* This case is easier: The user specified a keycode */
222 if (bind->keycode != input_code)
226 /* If this binding is a release binding, it matches the key which the
227 * user pressed. We therefore mark it as B_UPON_KEYRELEASE_IGNORE_MODS
228 * for later, so that the user can release the modifiers before the
229 * actual key or button and the release event will still be matched. */
230 if (bind->release == B_UPON_KEYRELEASE && !is_release)
231 bind->release = B_UPON_KEYRELEASE_IGNORE_MODS;
233 /* Check if the binding is for a press or a release event */
234 if ((bind->release == B_UPON_KEYPRESS && is_release) ||
235 (bind->release >= B_UPON_KEYRELEASE && !is_release))
241 return (bind == TAILQ_END(bindings) ? NULL : bind);
245 * Returns a pointer to the Binding that matches the given xcb button or key
246 * event or NULL if no such binding exists.
249 Binding *get_binding_from_xcb_event(xcb_generic_event_t *event) {
250 const bool is_release = (event->response_type == XCB_KEY_RELEASE ||
251 event->response_type == XCB_BUTTON_RELEASE);
253 const input_type_t input_type = ((event->response_type == XCB_BUTTON_RELEASE ||
254 event->response_type == XCB_BUTTON_PRESS)
258 const uint16_t event_state = ((xcb_key_press_event_t *)event)->state;
259 const uint16_t event_detail = ((xcb_key_press_event_t *)event)->detail;
261 /* Remove the numlock bit */
262 i3_event_state_mask_t state_filtered = event_state & ~(xcb_numlock_mask | XCB_MOD_MASK_LOCK);
263 DLOG("(removed numlock, state = 0x%x)\n", state_filtered);
264 /* Transform the keyboard_group from bit 13 and bit 14 into an
265 * i3_xkb_group_mask_t, so that get_binding() can just bitwise AND the
266 * configured bindings against |state_filtered|.
268 * These bits are only set because we set the XKB client flags
269 * XCB_XKB_PER_CLIENT_FLAG_GRABS_USE_XKB_STATE and
270 * XCB_XKB_PER_CLIENT_FLAG_LOOKUP_STATE_WHEN_GRABBED. See also doc/kbproto
272 * http://www.x.org/releases/X11R7.7/doc/kbproto/xkbproto.html#Computing_A_State_Field_from_an_XKB_State */
273 switch ((event_state & 0x6000) >> 13) {
274 case XCB_XKB_GROUP_1:
275 state_filtered |= (I3_XKB_GROUP_MASK_1 << 16);
277 case XCB_XKB_GROUP_2:
278 state_filtered |= (I3_XKB_GROUP_MASK_2 << 16);
280 case XCB_XKB_GROUP_3:
281 state_filtered |= (I3_XKB_GROUP_MASK_3 << 16);
283 case XCB_XKB_GROUP_4:
284 state_filtered |= (I3_XKB_GROUP_MASK_4 << 16);
287 state_filtered &= ~0x6000;
288 DLOG("(transformed keyboard group, state = 0x%x)\n", state_filtered);
289 return get_binding(state_filtered, is_release, event_detail, input_type);
293 /* The binding which we are resolving. */
296 /* |bind|’s keysym (translated to xkb_keysym_t), e.g. XKB_KEY_R. */
299 /* The xkb state built from the user-provided modifiers and group. */
300 struct xkb_state *xkb_state;
302 /* Like |xkb_state|, just without the shift modifier, if shift was specified. */
303 struct xkb_state *xkb_state_no_shift;
307 * add_keycode_if_matches is called for each keycode in the keymap and will add
308 * the keycode to |data->bind| if the keycode can result in the keysym
312 static void add_keycode_if_matches(struct xkb_keymap *keymap, xkb_keycode_t key, void *data) {
313 const struct resolve *resolving = data;
314 xkb_keysym_t sym = xkb_state_key_get_one_sym(resolving->xkb_state, key);
315 if (sym != resolving->keysym) {
316 /* Check if Shift was specified, and try resolving the symbol without
317 * shift, so that “bindsym $mod+Shift+a nop” actually works. */
318 const xkb_layout_index_t layout = xkb_state_key_get_layout(resolving->xkb_state, key);
319 if (layout == XKB_LAYOUT_INVALID)
321 if (xkb_state_key_get_level(resolving->xkb_state, key, layout) > 1)
323 sym = xkb_state_key_get_one_sym(resolving->xkb_state_no_shift, key);
324 if (sym != resolving->keysym)
327 Binding *bind = resolving->bind;
328 bind->number_keycodes++;
329 bind->translated_to = srealloc(bind->translated_to,
330 (sizeof(xcb_keycode_t) *
331 bind->number_keycodes));
332 bind->translated_to[bind->number_keycodes - 1] = key;
336 * Translates keysymbols to keycodes for all bindings which use keysyms.
339 void translate_keysyms(void) {
340 struct xkb_state *dummy_state = xkb_state_new(xkb_keymap);
341 if (dummy_state == NULL) {
342 ELOG("Could not create XKB state, cannot translate keysyms.\n");
346 struct xkb_state *dummy_state_no_shift = xkb_state_new(xkb_keymap);
347 if (dummy_state_no_shift == NULL) {
348 ELOG("Could not create XKB state, cannot translate keysyms.\n");
352 bool has_errors = false;
354 TAILQ_FOREACH(bind, bindings, bindings) {
355 if (bind->input_type == B_MOUSE) {
357 long button = strtol(bind->symbol + (sizeof("button") - 1), &endptr, 10);
358 bind->keycode = button;
360 if (button == LONG_MAX || button == LONG_MIN || button < 0 || *endptr != '\0' || endptr == bind->symbol)
361 ELOG("Could not translate string to button: \"%s\"\n", bind->symbol);
366 if (bind->keycode > 0)
369 /* We need to translate the symbol to a keycode */
370 const xkb_keysym_t keysym = xkb_keysym_from_name(bind->symbol, XKB_KEYSYM_NO_FLAGS);
371 if (keysym == XKB_KEY_NoSymbol) {
372 ELOG("Could not translate string to key symbol: \"%s\"\n",
377 xkb_layout_index_t group = XCB_XKB_GROUP_1;
378 if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_2)
379 group = XCB_XKB_GROUP_2;
380 else if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_3)
381 group = XCB_XKB_GROUP_3;
382 else if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_4)
383 group = XCB_XKB_GROUP_4;
385 DLOG("group = %d, event_state_mask = %d, &2 = %s, &3 = %s, &4 = %s\n", group,
386 bind->event_state_mask,
387 (bind->event_state_mask & I3_XKB_GROUP_MASK_2) ? "yes" : "no",
388 (bind->event_state_mask & I3_XKB_GROUP_MASK_3) ? "yes" : "no",
389 (bind->event_state_mask & I3_XKB_GROUP_MASK_4) ? "yes" : "no");
390 (void)xkb_state_update_mask(
392 (bind->event_state_mask & 0x1FFF) /* xkb_mod_mask_t base_mods, */,
393 0 /* xkb_mod_mask_t latched_mods, */,
394 0 /* xkb_mod_mask_t locked_mods, */,
395 0 /* xkb_layout_index_t base_group, */,
396 0 /* xkb_layout_index_t latched_group, */,
397 group /* xkb_layout_index_t locked_group, */);
399 (void)xkb_state_update_mask(
400 dummy_state_no_shift,
401 (bind->event_state_mask & 0x1FFF) ^ XCB_KEY_BUT_MASK_SHIFT /* xkb_mod_mask_t base_mods, */,
402 0 /* xkb_mod_mask_t latched_mods, */,
403 0 /* xkb_mod_mask_t locked_mods, */,
404 0 /* xkb_layout_index_t base_group, */,
405 0 /* xkb_layout_index_t latched_group, */,
406 group /* xkb_layout_index_t locked_group, */);
408 struct resolve resolving = {
411 .xkb_state = dummy_state,
412 .xkb_state_no_shift = dummy_state_no_shift,
414 FREE(bind->translated_to);
415 bind->number_keycodes = 0;
416 xkb_keymap_key_for_each(xkb_keymap, add_keycode_if_matches, &resolving);
417 char *keycodes = sstrdup("");
418 for (uint32_t n = 0; n < bind->number_keycodes; n++) {
420 sasprintf(&tmp, "%s %d", keycodes, bind->translated_to[n]);
424 /* check for duplicate bindings */
426 TAILQ_FOREACH(check, bindings, bindings) {
429 if (check->symbol != NULL)
431 if (check->keycode != bind->translated_to[n] ||
432 check->event_state_mask != bind->event_state_mask ||
433 check->release != bind->release)
436 ELOG("Duplicate keybinding in config file:\n keysym = %s, keycode = %d, state_mask = 0x%x\n", bind->symbol, check->keycode, bind->event_state_mask);
439 DLOG("state=0x%x, cfg=\"%s\", sym=0x%x → keycodes%s (%d)\n",
440 bind->event_state_mask, bind->symbol, keysym, keycodes, bind->number_keycodes);
444 xkb_state_unref(dummy_state);
445 xkb_state_unref(dummy_state_no_shift);
448 start_config_error_nagbar(current_configpath, true);
453 * Switches the key bindings to the given mode, if the mode exists
456 void switch_mode(const char *new_mode) {
459 DLOG("Switching to mode %s\n", new_mode);
461 SLIST_FOREACH(mode, &modes, modes) {
462 if (strcasecmp(mode->name, new_mode) != 0)
465 ungrab_all_keys(conn);
466 bindings = mode->bindings;
471 sasprintf(&event_msg, "{\"change\":\"%s\", \"pango_markup\":%s}",
472 mode->name, (mode->pango_markup ? "true" : "false"));
474 ipc_send_event("mode", I3_IPC_EVENT_MODE, event_msg);
480 ELOG("ERROR: Mode not found\n");
483 static int reorder_binding_cmp(const void *a, const void *b) {
484 Binding *first = *((Binding **)a);
485 Binding *second = *((Binding **)b);
486 if (first->event_state_mask < second->event_state_mask) {
488 } else if (first->event_state_mask == second->event_state_mask) {
495 static void reorder_bindings_of_mode(struct Mode *mode) {
496 /* Copy the bindings into an array, so that we can use qsort(3). */
499 TAILQ_FOREACH(current, mode->bindings, bindings) {
502 Binding **tmp = scalloc(n, sizeof(Binding *));
504 TAILQ_FOREACH(current, mode->bindings, bindings) {
508 qsort(tmp, n, sizeof(Binding *), reorder_binding_cmp);
510 struct bindings_head *reordered = scalloc(1, sizeof(struct bindings_head));
511 TAILQ_INIT(reordered);
512 for (int i = 0; i < n; i++) {
514 TAILQ_REMOVE(mode->bindings, current, bindings);
515 TAILQ_INSERT_TAIL(reordered, current, bindings);
518 assert(TAILQ_EMPTY(mode->bindings));
519 /* Free the old bindings_head, which is now empty. */
520 free(mode->bindings);
521 mode->bindings = reordered;
525 * Reorders bindings by event_state_mask descendingly so that get_binding()
526 * correctly matches more specific bindings before more generic bindings. Take
527 * the following binding configuration as an example:
529 * bindsym n nop lower-case n pressed
530 * bindsym Shift+n nop upper-case n pressed
532 * Without reordering, the first binding’s event_state_mask of 0x0 would match
533 * the actual event_stat_mask of 0x1 and hence trigger instead of the second
537 void reorder_bindings(void) {
539 SLIST_FOREACH(mode, &modes, modes) {
540 const bool current_mode = (mode->bindings == bindings);
541 reorder_bindings_of_mode(mode);
543 bindings = mode->bindings;
548 * Checks for duplicate key bindings (the same keycode or keysym is configured
549 * more than once). If a duplicate binding is found, a message is printed to
550 * stderr and the has_errors variable is set to true, which will start
554 void check_for_duplicate_bindings(struct context *context) {
555 Binding *bind, *current;
556 TAILQ_FOREACH(current, bindings, bindings) {
557 TAILQ_FOREACH(bind, bindings, bindings) {
558 /* Abort when we reach the current keybinding, only check the
563 /* Check if the input types are different */
564 if (bind->input_type != current->input_type)
567 /* Check if one is using keysym while the other is using bindsym.
569 if ((bind->symbol == NULL && current->symbol != NULL) ||
570 (bind->symbol != NULL && current->symbol == NULL))
573 /* If bind is NULL, current has to be NULL, too (see above).
574 * If the keycodes differ, it can't be a duplicate. */
575 if (bind->symbol != NULL &&
576 strcasecmp(bind->symbol, current->symbol) != 0)
579 /* Check if the keycodes or modifiers are different. If so, they
580 * can't be duplicate */
581 if (bind->keycode != current->keycode ||
582 bind->event_state_mask != current->event_state_mask ||
583 bind->release != current->release)
586 context->has_errors = true;
587 if (current->keycode != 0) {
588 ELOG("Duplicate keybinding in config file:\n state mask 0x%x with keycode %d, command \"%s\"\n",
589 current->event_state_mask, current->keycode, current->command);
591 ELOG("Duplicate keybinding in config file:\n state mask 0x%x with keysym %s, command \"%s\"\n",
592 current->event_state_mask, current->symbol, current->command);
599 * Creates a dynamically allocated copy of bind.
601 static Binding *binding_copy(Binding *bind) {
602 Binding *ret = smalloc(sizeof(Binding));
604 if (bind->symbol != NULL)
605 ret->symbol = sstrdup(bind->symbol);
606 if (bind->command != NULL)
607 ret->command = sstrdup(bind->command);
608 if (bind->translated_to != NULL) {
609 ret->translated_to = smalloc(sizeof(xcb_keycode_t) * bind->number_keycodes);
610 memcpy(ret->translated_to, bind->translated_to, sizeof(xcb_keycode_t) * bind->number_keycodes);
616 * Frees the binding. If bind is null, it simply returns.
618 void binding_free(Binding *bind) {
624 FREE(bind->translated_to);
630 * Runs the given binding and handles parse errors. If con is passed, it will
631 * execute the command binding with that container selected by criteria.
632 * Returns a CommandResult for running the binding's command. Caller should
633 * render tree if needs_tree_render is true. Free with command_result_free().
636 CommandResult *run_binding(Binding *bind, Con *con) {
639 /* We need to copy the binding and command since “reload” may be part of
640 * the command, and then the memory that bind points to may not contain the
641 * same data anymore. */
643 command = sstrdup(bind->command);
645 sasprintf(&command, "[con_id=\"%p\"] %s", con, bind->command);
647 Binding *bind_cp = binding_copy(bind);
648 CommandResult *result = parse_command(command, NULL);
651 if (result->needs_tree_render)
654 if (result->parse_error) {
656 sasprintf(&pageraction, "i3-sensible-pager \"%s\"\n", errorfilename);
658 NULL, /* will be replaced by the executable path */
664 "The configured command for this shortcut could not be run successfully.",
669 start_nagbar(&command_error_nagbar_pid, argv);
673 ipc_send_binding_event("run", bind_cp);
674 binding_free(bind_cp);
679 static int fill_rmlvo_from_root(struct xkb_rule_names *xkb_names) {
680 xcb_intern_atom_reply_t *atom_reply;
681 size_t content_max_words = 256;
683 xcb_window_t root = root_screen->root;
685 atom_reply = xcb_intern_atom_reply(
686 conn, xcb_intern_atom(conn, 0, strlen("_XKB_RULES_NAMES"), "_XKB_RULES_NAMES"), NULL);
687 if (atom_reply == NULL)
690 xcb_get_property_cookie_t prop_cookie;
691 xcb_get_property_reply_t *prop_reply;
692 prop_cookie = xcb_get_property_unchecked(conn, false, root, atom_reply->atom,
693 XCB_GET_PROPERTY_TYPE_ANY, 0, content_max_words);
694 prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);
695 if (prop_reply == NULL) {
699 if (xcb_get_property_value_length(prop_reply) > 0 && prop_reply->bytes_after > 0) {
700 /* We received an incomplete value. Ask again but with a properly
702 content_max_words += ceil(prop_reply->bytes_after / 4.0);
703 /* Repeat the request, with adjusted size */
705 prop_cookie = xcb_get_property_unchecked(conn, false, root, atom_reply->atom,
706 XCB_GET_PROPERTY_TYPE_ANY, 0, content_max_words);
707 prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);
708 if (prop_reply == NULL) {
713 if (xcb_get_property_value_length(prop_reply) == 0) {
719 const char *walk = (const char *)xcb_get_property_value(prop_reply);
720 int remaining = xcb_get_property_value_length(prop_reply);
721 for (int i = 0; i < 5 && remaining > 0; i++) {
722 const int len = strnlen(walk, remaining);
726 sasprintf((char **)&(xkb_names->rules), "%.*s", len, walk);
729 sasprintf((char **)&(xkb_names->model), "%.*s", len, walk);
732 sasprintf((char **)&(xkb_names->layout), "%.*s", len, walk);
735 sasprintf((char **)&(xkb_names->variant), "%.*s", len, walk);
738 sasprintf((char **)&(xkb_names->options), "%.*s", len, walk);
741 DLOG("component %d of _XKB_RULES_NAMES is \"%.*s\"\n", i, len, walk);
751 * Loads the XKB keymap from the X11 server and feeds it to xkbcommon.
754 bool load_keymap(void) {
755 if (xkb_context == NULL) {
756 if ((xkb_context = xkb_context_new(0)) == NULL) {
757 ELOG("Could not create xkbcommon context\n");
762 struct xkb_keymap *new_keymap = NULL;
764 if (xkb_supported && (device_id = xkb_x11_get_core_keyboard_device_id(conn)) > -1) {
765 if ((new_keymap = xkb_x11_keymap_new_from_device(xkb_context, conn, device_id, 0)) == NULL) {
766 ELOG("xkb_x11_keymap_new_from_device failed\n");
770 /* Likely there is no XKB support on this server, possibly because it
771 * is a VNC server. */
772 LOG("No XKB / core keyboard device? Assembling keymap from local RMLVO.\n");
773 struct xkb_rule_names names = {
779 if (fill_rmlvo_from_root(&names) == -1) {
780 ELOG("Could not get _XKB_RULES_NAMES atom from root window, falling back to defaults.\n");
781 if ((new_keymap = xkb_keymap_new_from_names(xkb_context, &names, 0)) == NULL) {
782 ELOG("xkb_keymap_new_from_names(NULL) failed\n");
786 new_keymap = xkb_keymap_new_from_names(xkb_context, &names, 0);
787 free((char *)names.rules);
788 free((char *)names.model);
789 free((char *)names.layout);
790 free((char *)names.variant);
791 free((char *)names.options);
792 if (new_keymap == NULL) {
793 ELOG("xkb_keymap_new_from_names(RMLVO) failed\n");
797 xkb_keymap_unref(xkb_keymap);
798 xkb_keymap = new_keymap;
804 * Returns true if the current config has any binding to a scroll wheel button
805 * (4 or 5) which is a whole-window binding.
806 * We need this to figure out whether we should grab all buttons or just 1-3
807 * when managing a window. See #2049.
810 bool bindings_should_grab_scrollwheel_buttons(void) {
812 TAILQ_FOREACH(bind, bindings, bindings) {
813 /* We are only interested in whole window mouse bindings. */
814 if (bind->input_type != B_MOUSE || !bind->whole_window)
818 long button = strtol(bind->symbol + (sizeof("button") - 1), &endptr, 10);
819 if (button == LONG_MAX || button == LONG_MIN || button < 0 || *endptr != '\0' || endptr == bind->symbol) {
820 ELOG("Could not parse button number, skipping this binding. Please report this bug in i3.\n");
824 /* If the binding is for either scrollwheel button, we need to grab everything. */
825 if (button == 4 || button == 5) {