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) {
40 /* If the mode was not found, create a new one */
41 mode = scalloc(1, sizeof(struct Mode));
42 mode->name = sstrdup(name);
43 mode->pango_markup = pango_markup;
44 mode->bindings = scalloc(1, sizeof(struct bindings_head));
45 TAILQ_INIT(mode->bindings);
46 SLIST_INSERT_HEAD(&modes, mode, modes);
52 * Adds a binding from config parameters given as strings and returns a
53 * pointer to the binding structure. Returns NULL if the input code could not
57 Binding *configure_binding(const char *bindtype, const char *modifiers, const char *input_code,
58 const char *release, const char *border, const char *whole_window,
59 const char *exclude_titlebar, const char *command, const char *modename,
61 Binding *new_binding = scalloc(1, sizeof(Binding));
62 DLOG("Binding %p bindtype %s, modifiers %s, input code %s, release %s\n", new_binding, bindtype, modifiers, input_code, release);
63 new_binding->release = (release != NULL ? B_UPON_KEYRELEASE : B_UPON_KEYPRESS);
64 new_binding->border = (border != NULL);
65 new_binding->whole_window = (whole_window != NULL);
66 new_binding->exclude_titlebar = (exclude_titlebar != NULL);
67 if (strcmp(bindtype, "bindsym") == 0) {
68 new_binding->input_type = (strncasecmp(input_code, "button", (sizeof("button") - 1)) == 0
72 new_binding->symbol = sstrdup(input_code);
75 if (!parse_long(input_code, &keycode, 10)) {
76 ELOG("Could not parse \"%s\" as an input code, ignoring this binding.\n", input_code);
81 new_binding->keycode = keycode;
82 new_binding->input_type = B_KEYBOARD;
84 new_binding->command = sstrdup(command);
85 new_binding->event_state_mask = event_state_from_str(modifiers);
86 int group_bits_set = 0;
87 if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_1)
89 if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_2)
91 if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_3)
93 if ((new_binding->event_state_mask >> 16) & I3_XKB_GROUP_MASK_4)
95 if (group_bits_set > 1)
96 ELOG("Keybinding has more than one Group specified, but your X server is always in precisely one group. The keybinding can never trigger.\n");
98 struct Mode *mode = mode_from_name(modename, pango_markup);
99 TAILQ_INSERT_TAIL(mode->bindings, new_binding, bindings);
101 TAILQ_INIT(&(new_binding->keycodes_head));
106 static bool binding_in_current_group(const Binding *bind) {
107 /* If no bits are set, the binding should be installed in every group. */
108 if ((bind->event_state_mask >> 16) == I3_XKB_GROUP_MASK_ANY)
110 switch (xkb_current_group) {
111 case XCB_XKB_GROUP_1:
112 return ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_1);
113 case XCB_XKB_GROUP_2:
114 return ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_2);
115 case XCB_XKB_GROUP_3:
116 return ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_3);
117 case XCB_XKB_GROUP_4:
118 return ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_4);
120 ELOG("BUG: xkb_current_group (= %d) outside of [XCB_XKB_GROUP_1..XCB_XKB_GROUP_4]\n", xkb_current_group);
125 static void grab_keycode_for_binding(xcb_connection_t *conn, Binding *bind, uint32_t keycode) {
126 /* Grab the key in all combinations */
127 #define GRAB_KEY(modifier) \
129 xcb_grab_key(conn, 0, root, modifier, keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC); \
131 const int mods = (bind->event_state_mask & 0xFFFF);
132 DLOG("Binding %p Grabbing keycode %d with event state mask 0x%x (mods 0x%x)\n",
133 bind, keycode, bind->event_state_mask, mods);
135 /* Also bind the key with active NumLock */
136 GRAB_KEY(mods | xcb_numlock_mask);
137 /* Also bind the key with active CapsLock */
138 GRAB_KEY(mods | XCB_MOD_MASK_LOCK);
139 /* Also bind the key with active NumLock+CapsLock */
140 GRAB_KEY(mods | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
144 * Grab the bound keys (tell X to send us keypress events for those keycodes)
147 void grab_all_keys(xcb_connection_t *conn) {
149 TAILQ_FOREACH(bind, bindings, bindings) {
150 if (bind->input_type != B_KEYBOARD)
153 if (!binding_in_current_group(bind))
156 /* The easy case: the user specified a keycode directly. */
157 if (bind->keycode > 0) {
158 grab_keycode_for_binding(conn, bind, bind->keycode);
162 struct Binding_Keycode *binding_keycode;
163 TAILQ_FOREACH(binding_keycode, &(bind->keycodes_head), keycodes) {
164 const int keycode = binding_keycode->keycode;
165 const int mods = (binding_keycode->modifiers & 0xFFFF);
166 DLOG("Binding %p Grabbing keycode %d with mods %d\n", bind, keycode, mods);
167 xcb_grab_key(conn, 0, root, mods, keycode, XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC);
173 * Release the button grabs on all managed windows and regrab them,
174 * reevaluating which buttons need to be grabbed.
177 void regrab_all_buttons(xcb_connection_t *conn) {
178 int *buttons = bindings_get_buttons_to_grab();
179 xcb_grab_server(conn);
182 TAILQ_FOREACH(con, &all_cons, all_cons) {
183 if (con->window == NULL)
186 xcb_ungrab_button(conn, XCB_BUTTON_INDEX_ANY, con->window->id, XCB_BUTTON_MASK_ANY);
187 xcb_grab_buttons(conn, con->window->id, buttons);
191 xcb_ungrab_server(conn);
194 static bool modifiers_match(const uint32_t modifiers_mask, const uint32_t modifiers_state) {
195 /* modifiers_mask is a special case: a value of 0 does not mean “match
196 * all”, but rather “match exactly when no modifiers are present”. */
197 if (modifiers_mask == 0) {
198 /* Verify no modifiers are pressed. A bitwise AND would lead to
199 * false positives, see issue #2002. */
200 return (modifiers_state == 0);
202 return ((modifiers_state & modifiers_mask) == modifiers_mask);
206 * Returns a pointer to the Binding with the specified modifiers and
207 * keycode or NULL if no such binding exists.
210 static Binding *get_binding(i3_event_state_mask_t state_filtered, bool is_release, uint16_t input_code, input_type_t input_type) {
214 /* On a press event, we first reset all B_UPON_KEYRELEASE_IGNORE_MODS
215 * bindings back to B_UPON_KEYRELEASE */
216 TAILQ_FOREACH(bind, bindings, bindings) {
217 if (bind->input_type != input_type)
219 if (bind->release == B_UPON_KEYRELEASE_IGNORE_MODS)
220 bind->release = B_UPON_KEYRELEASE;
224 const uint32_t xkb_group_state = (state_filtered & 0xFFFF0000);
225 const uint32_t modifiers_state = (state_filtered & 0x0000FFFF);
226 TAILQ_FOREACH(bind, bindings, bindings) {
227 if (bind->input_type != input_type) {
231 const uint32_t xkb_group_mask = (bind->event_state_mask & 0xFFFF0000);
232 const bool groups_match = ((xkb_group_state & xkb_group_mask) == xkb_group_mask);
234 DLOG("skipping binding %p because XKB groups do not match\n", bind);
238 /* For keyboard bindings where a symbol was specified by the user, we
239 * need to look in the array of translated keycodes for the event’s
241 if (input_type == B_KEYBOARD && bind->symbol != NULL) {
242 xcb_keycode_t input_keycode = (xcb_keycode_t)input_code;
243 bool found_keycode = false;
244 struct Binding_Keycode *binding_keycode;
245 TAILQ_FOREACH(binding_keycode, &(bind->keycodes_head), keycodes) {
246 const uint32_t modifiers_mask = (binding_keycode->modifiers & 0x0000FFFF);
247 const bool mods_match = modifiers_match(modifiers_mask, modifiers_state);
248 DLOG("binding_keycode->modifiers = %d, modifiers_mask = %d, modifiers_state = %d, mods_match = %s\n",
249 binding_keycode->modifiers, modifiers_mask, modifiers_state, (mods_match ? "yes" : "no"));
250 if (binding_keycode->keycode == input_keycode && mods_match) {
251 found_keycode = true;
255 if (!found_keycode) {
259 /* This case is easier: The user specified a keycode */
260 if (bind->keycode != input_code) {
264 xcb_keycode_t input_keycode = (xcb_keycode_t)input_code;
265 bool found_keycode = false;
266 struct Binding_Keycode *binding_keycode;
267 TAILQ_FOREACH(binding_keycode, &(bind->keycodes_head), keycodes) {
268 const uint32_t modifiers_mask = (binding_keycode->modifiers & 0x0000FFFF);
269 const bool mods_match = modifiers_match(modifiers_mask, modifiers_state);
270 DLOG("binding_keycode->modifiers = %d, modifiers_mask = %d, modifiers_state = %d, mods_match = %s\n",
271 binding_keycode->modifiers, modifiers_mask, modifiers_state, (mods_match ? "yes" : "no"));
272 if (binding_keycode->keycode == input_keycode && mods_match) {
273 found_keycode = true;
277 if (!found_keycode) {
282 /* If this binding is a release binding, it matches the key which the
283 * user pressed. We therefore mark it as B_UPON_KEYRELEASE_IGNORE_MODS
284 * for later, so that the user can release the modifiers before the
285 * actual key or button and the release event will still be matched. */
286 if (bind->release == B_UPON_KEYRELEASE && !is_release) {
287 bind->release = B_UPON_KEYRELEASE_IGNORE_MODS;
288 DLOG("marked bind %p as B_UPON_KEYRELEASE_IGNORE_MODS\n", bind);
289 /* The correct binding has been found, so abort the search, but
290 * also don’t return this binding, since it should not be executed
291 * yet (only when the keys are released). */
292 bind = TAILQ_END(bindings);
296 /* Check if the binding is for a press or a release event */
297 if ((bind->release == B_UPON_KEYPRESS && is_release) ||
298 (bind->release >= B_UPON_KEYRELEASE && !is_release)) {
305 return (bind == TAILQ_END(bindings) ? NULL : bind);
309 * Returns a pointer to the Binding that matches the given xcb button or key
310 * event or NULL if no such binding exists.
313 Binding *get_binding_from_xcb_event(xcb_generic_event_t *event) {
314 const bool is_release = (event->response_type == XCB_KEY_RELEASE ||
315 event->response_type == XCB_BUTTON_RELEASE);
317 const input_type_t input_type = ((event->response_type == XCB_BUTTON_RELEASE ||
318 event->response_type == XCB_BUTTON_PRESS)
322 const uint16_t event_state = ((xcb_key_press_event_t *)event)->state;
323 const uint16_t event_detail = ((xcb_key_press_event_t *)event)->detail;
325 /* Remove the CapsLock bit */
326 i3_event_state_mask_t state_filtered = event_state & ~XCB_MOD_MASK_LOCK;
327 DLOG("(removed capslock, state = 0x%x)\n", state_filtered);
328 /* Transform the keyboard_group from bit 13 and bit 14 into an
329 * i3_xkb_group_mask_t, so that get_binding() can just bitwise AND the
330 * configured bindings against |state_filtered|.
332 * These bits are only set because we set the XKB client flags
333 * XCB_XKB_PER_CLIENT_FLAG_GRABS_USE_XKB_STATE and
334 * XCB_XKB_PER_CLIENT_FLAG_LOOKUP_STATE_WHEN_GRABBED. See also doc/kbproto
336 * http://www.x.org/releases/X11R7.7/doc/kbproto/xkbproto.html#Computing_A_State_Field_from_an_XKB_State */
337 switch ((event_state & 0x6000) >> 13) {
338 case XCB_XKB_GROUP_1:
339 state_filtered |= (I3_XKB_GROUP_MASK_1 << 16);
341 case XCB_XKB_GROUP_2:
342 state_filtered |= (I3_XKB_GROUP_MASK_2 << 16);
344 case XCB_XKB_GROUP_3:
345 state_filtered |= (I3_XKB_GROUP_MASK_3 << 16);
347 case XCB_XKB_GROUP_4:
348 state_filtered |= (I3_XKB_GROUP_MASK_4 << 16);
351 state_filtered &= ~0x6000;
352 DLOG("(transformed keyboard group, state = 0x%x)\n", state_filtered);
353 return get_binding(state_filtered, is_release, event_detail, input_type);
357 /* The binding which we are resolving. */
360 /* |bind|’s keysym (translated to xkb_keysym_t), e.g. XKB_KEY_R. */
363 /* The xkb state built from the user-provided modifiers and group. */
364 struct xkb_state *xkb_state;
366 /* Like |xkb_state|, just without the shift modifier, if shift was specified. */
367 struct xkb_state *xkb_state_no_shift;
369 /* Like |xkb_state|, but with NumLock. */
370 struct xkb_state *xkb_state_numlock;
372 /* Like |xkb_state|, but with NumLock, just without the shift modifier, if shift was specified. */
373 struct xkb_state *xkb_state_numlock_no_shift;
377 * add_keycode_if_matches is called for each keycode in the keymap and will add
378 * the keycode to |data->bind| if the keycode can result in the keysym
382 static void add_keycode_if_matches(struct xkb_keymap *keymap, xkb_keycode_t key, void *data) {
383 const struct resolve *resolving = data;
384 struct xkb_state *numlock_state = resolving->xkb_state_numlock;
385 xkb_keysym_t sym = xkb_state_key_get_one_sym(resolving->xkb_state, key);
386 if (sym != resolving->keysym) {
387 /* Check if Shift was specified, and try resolving the symbol without
388 * shift, so that “bindsym $mod+Shift+a nop” actually works. */
389 const xkb_layout_index_t layout = xkb_state_key_get_layout(resolving->xkb_state, key);
390 if (layout == XKB_LAYOUT_INVALID)
392 if (xkb_state_key_get_level(resolving->xkb_state, key, layout) > 1)
394 /* Skip the Shift fallback for keypad keys, otherwise one cannot bind
395 * KP_1 independent of KP_End. */
396 if (sym >= XKB_KEY_KP_Space && sym <= XKB_KEY_KP_Equal)
398 numlock_state = resolving->xkb_state_numlock_no_shift;
399 sym = xkb_state_key_get_one_sym(resolving->xkb_state_no_shift, key);
400 if (sym != resolving->keysym)
403 Binding *bind = resolving->bind;
405 #define ADD_TRANSLATED_KEY(mods) \
407 struct Binding_Keycode *binding_keycode = smalloc(sizeof(struct Binding_Keycode)); \
408 binding_keycode->modifiers = (mods); \
409 binding_keycode->keycode = key; \
410 TAILQ_INSERT_TAIL(&(bind->keycodes_head), binding_keycode, keycodes); \
413 ADD_TRANSLATED_KEY(bind->event_state_mask);
415 /* Also bind the key with active CapsLock */
416 ADD_TRANSLATED_KEY(bind->event_state_mask | XCB_MOD_MASK_LOCK);
418 /* If this binding is not explicitly for NumLock, check whether we need to
420 if ((bind->event_state_mask & xcb_numlock_mask) != xcb_numlock_mask) {
421 /* Check whether the keycode results in the same keysym when NumLock is
422 * active. If so, grab the key with NumLock as well, so that users don’t
423 * need to duplicate every key binding with an additional Mod2 specified.
425 xkb_keysym_t sym_numlock = xkb_state_key_get_one_sym(numlock_state, key);
426 if (sym_numlock == resolving->keysym) {
427 /* Also bind the key with active NumLock */
428 ADD_TRANSLATED_KEY(bind->event_state_mask | xcb_numlock_mask);
430 /* Also bind the key with active NumLock+CapsLock */
431 ADD_TRANSLATED_KEY(bind->event_state_mask | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
433 DLOG("Skipping automatic numlock fallback, key %d resolves to 0x%x with numlock\n",
438 #undef ADD_TRANSLATED_KEY
442 * Translates keysymbols to keycodes for all bindings which use keysyms.
445 void translate_keysyms(void) {
446 struct xkb_state *dummy_state = xkb_state_new(xkb_keymap);
447 if (dummy_state == NULL) {
448 ELOG("Could not create XKB state, cannot translate keysyms.\n");
452 struct xkb_state *dummy_state_no_shift = xkb_state_new(xkb_keymap);
453 if (dummy_state_no_shift == NULL) {
454 ELOG("Could not create XKB state, cannot translate keysyms.\n");
458 struct xkb_state *dummy_state_numlock = xkb_state_new(xkb_keymap);
459 if (dummy_state_numlock == NULL) {
460 ELOG("Could not create XKB state, cannot translate keysyms.\n");
464 struct xkb_state *dummy_state_numlock_no_shift = xkb_state_new(xkb_keymap);
465 if (dummy_state_numlock_no_shift == NULL) {
466 ELOG("Could not create XKB state, cannot translate keysyms.\n");
470 bool has_errors = false;
472 TAILQ_FOREACH(bind, bindings, bindings) {
473 #define ADD_TRANSLATED_KEY(code, mods) \
475 struct Binding_Keycode *binding_keycode = smalloc(sizeof(struct Binding_Keycode)); \
476 binding_keycode->modifiers = (mods); \
477 binding_keycode->keycode = (code); \
478 TAILQ_INSERT_TAIL(&(bind->keycodes_head), binding_keycode, keycodes); \
481 if (bind->input_type == B_MOUSE) {
483 if (!parse_long(bind->symbol + (sizeof("button") - 1), &button, 10)) {
484 ELOG("Could not translate string to button: \"%s\"\n", bind->symbol);
487 bind->keycode = button;
488 ADD_TRANSLATED_KEY(button, bind->event_state_mask);
492 xkb_layout_index_t group = XCB_XKB_GROUP_1;
493 if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_2)
494 group = XCB_XKB_GROUP_2;
495 else if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_3)
496 group = XCB_XKB_GROUP_3;
497 else if ((bind->event_state_mask >> 16) & I3_XKB_GROUP_MASK_4)
498 group = XCB_XKB_GROUP_4;
500 DLOG("Binding %p group = %d, event_state_mask = %d, &2 = %s, &3 = %s, &4 = %s\n",
503 bind->event_state_mask,
504 (bind->event_state_mask & I3_XKB_GROUP_MASK_2) ? "yes" : "no",
505 (bind->event_state_mask & I3_XKB_GROUP_MASK_3) ? "yes" : "no",
506 (bind->event_state_mask & I3_XKB_GROUP_MASK_4) ? "yes" : "no");
507 (void)xkb_state_update_mask(
509 (bind->event_state_mask & 0x1FFF) /* xkb_mod_mask_t base_mods, */,
510 0 /* xkb_mod_mask_t latched_mods, */,
511 0 /* xkb_mod_mask_t locked_mods, */,
512 0 /* xkb_layout_index_t base_group, */,
513 0 /* xkb_layout_index_t latched_group, */,
514 group /* xkb_layout_index_t locked_group, */);
516 (void)xkb_state_update_mask(
517 dummy_state_no_shift,
518 (bind->event_state_mask & 0x1FFF) ^ XCB_KEY_BUT_MASK_SHIFT /* xkb_mod_mask_t base_mods, */,
519 0 /* xkb_mod_mask_t latched_mods, */,
520 0 /* xkb_mod_mask_t locked_mods, */,
521 0 /* xkb_layout_index_t base_group, */,
522 0 /* xkb_layout_index_t latched_group, */,
523 group /* xkb_layout_index_t locked_group, */);
525 (void)xkb_state_update_mask(
527 (bind->event_state_mask & 0x1FFF) | xcb_numlock_mask /* xkb_mod_mask_t base_mods, */,
528 0 /* xkb_mod_mask_t latched_mods, */,
529 0 /* xkb_mod_mask_t locked_mods, */,
530 0 /* xkb_layout_index_t base_group, */,
531 0 /* xkb_layout_index_t latched_group, */,
532 group /* xkb_layout_index_t locked_group, */);
534 (void)xkb_state_update_mask(
535 dummy_state_numlock_no_shift,
536 ((bind->event_state_mask & 0x1FFF) | xcb_numlock_mask) ^ XCB_KEY_BUT_MASK_SHIFT /* xkb_mod_mask_t base_mods, */,
537 0 /* xkb_mod_mask_t latched_mods, */,
538 0 /* xkb_mod_mask_t locked_mods, */,
539 0 /* xkb_layout_index_t base_group, */,
540 0 /* xkb_layout_index_t latched_group, */,
541 group /* xkb_layout_index_t locked_group, */);
543 if (bind->keycode > 0) {
544 /* We need to specify modifiers for the keycode binding (numlock
546 while (!TAILQ_EMPTY(&(bind->keycodes_head))) {
547 struct Binding_Keycode *first = TAILQ_FIRST(&(bind->keycodes_head));
548 TAILQ_REMOVE(&(bind->keycodes_head), first, keycodes);
552 ADD_TRANSLATED_KEY(bind->keycode, bind->event_state_mask);
554 /* Also bind the key with active CapsLock */
555 ADD_TRANSLATED_KEY(bind->keycode, bind->event_state_mask | XCB_MOD_MASK_LOCK);
557 /* If this binding is not explicitly for NumLock, check whether we need to
559 if ((bind->event_state_mask & xcb_numlock_mask) != xcb_numlock_mask) {
560 /* Check whether the keycode results in the same keysym when NumLock is
561 * active. If so, grab the key with NumLock as well, so that users don’t
562 * need to duplicate every key binding with an additional Mod2 specified.
564 xkb_keysym_t sym = xkb_state_key_get_one_sym(dummy_state, bind->keycode);
565 xkb_keysym_t sym_numlock = xkb_state_key_get_one_sym(dummy_state_numlock, bind->keycode);
566 if (sym == sym_numlock) {
567 /* Also bind the key with active NumLock */
568 ADD_TRANSLATED_KEY(bind->keycode, bind->event_state_mask | xcb_numlock_mask);
570 /* Also bind the key with active NumLock+CapsLock */
571 ADD_TRANSLATED_KEY(bind->keycode, bind->event_state_mask | xcb_numlock_mask | XCB_MOD_MASK_LOCK);
573 DLOG("Skipping automatic numlock fallback, key %d resolves to 0x%x with numlock\n",
574 bind->keycode, sym_numlock);
581 /* We need to translate the symbol to a keycode */
582 const xkb_keysym_t keysym = xkb_keysym_from_name(bind->symbol, XKB_KEYSYM_NO_FLAGS);
583 if (keysym == XKB_KEY_NoSymbol) {
584 ELOG("Could not translate string to key symbol: \"%s\"\n",
589 struct resolve resolving = {
592 .xkb_state = dummy_state,
593 .xkb_state_no_shift = dummy_state_no_shift,
594 .xkb_state_numlock = dummy_state_numlock,
595 .xkb_state_numlock_no_shift = dummy_state_numlock_no_shift,
597 while (!TAILQ_EMPTY(&(bind->keycodes_head))) {
598 struct Binding_Keycode *first = TAILQ_FIRST(&(bind->keycodes_head));
599 TAILQ_REMOVE(&(bind->keycodes_head), first, keycodes);
602 xkb_keymap_key_for_each(xkb_keymap, add_keycode_if_matches, &resolving);
603 char *keycodes = sstrdup("");
604 int num_keycodes = 0;
605 struct Binding_Keycode *binding_keycode;
606 TAILQ_FOREACH(binding_keycode, &(bind->keycodes_head), keycodes) {
608 sasprintf(&tmp, "%s %d", keycodes, binding_keycode->keycode);
613 /* check for duplicate bindings */
615 TAILQ_FOREACH(check, bindings, bindings) {
618 if (check->symbol != NULL)
620 if (check->keycode != binding_keycode->keycode ||
621 check->event_state_mask != binding_keycode->modifiers ||
622 check->release != bind->release)
625 ELOG("Duplicate keybinding in config file:\n keysym = %s, keycode = %d, state_mask = 0x%x\n", bind->symbol, check->keycode, bind->event_state_mask);
628 DLOG("state=0x%x, cfg=\"%s\", sym=0x%x → keycodes%s (%d)\n",
629 bind->event_state_mask, bind->symbol, keysym, keycodes, num_keycodes);
632 #undef ADD_TRANSLATED_KEY
635 xkb_state_unref(dummy_state);
636 xkb_state_unref(dummy_state_no_shift);
637 xkb_state_unref(dummy_state_numlock);
638 xkb_state_unref(dummy_state_numlock_no_shift);
641 start_config_error_nagbar(current_configpath, true);
646 * Switches the key bindings to the given mode, if the mode exists
649 void switch_mode(const char *new_mode) {
652 DLOG("Switching to mode %s\n", new_mode);
654 SLIST_FOREACH(mode, &modes, modes) {
655 if (strcasecmp(mode->name, new_mode) != 0)
658 ungrab_all_keys(conn);
659 bindings = mode->bindings;
664 sasprintf(&event_msg, "{\"change\":\"%s\", \"pango_markup\":%s}",
665 mode->name, (mode->pango_markup ? "true" : "false"));
667 ipc_send_event("mode", I3_IPC_EVENT_MODE, event_msg);
673 ELOG("ERROR: Mode not found\n");
676 static int reorder_binding_cmp(const void *a, const void *b) {
677 Binding *first = *((Binding **)a);
678 Binding *second = *((Binding **)b);
679 if (first->event_state_mask < second->event_state_mask) {
681 } else if (first->event_state_mask == second->event_state_mask) {
688 static void reorder_bindings_of_mode(struct Mode *mode) {
689 /* Copy the bindings into an array, so that we can use qsort(3). */
692 TAILQ_FOREACH(current, mode->bindings, bindings) {
695 Binding **tmp = scalloc(n, sizeof(Binding *));
697 TAILQ_FOREACH(current, mode->bindings, bindings) {
701 qsort(tmp, n, sizeof(Binding *), reorder_binding_cmp);
703 struct bindings_head *reordered = scalloc(1, sizeof(struct bindings_head));
704 TAILQ_INIT(reordered);
705 for (int i = 0; i < n; i++) {
707 TAILQ_REMOVE(mode->bindings, current, bindings);
708 TAILQ_INSERT_TAIL(reordered, current, bindings);
711 assert(TAILQ_EMPTY(mode->bindings));
712 /* Free the old bindings_head, which is now empty. */
713 free(mode->bindings);
714 mode->bindings = reordered;
718 * Reorders bindings by event_state_mask descendingly so that get_binding()
719 * correctly matches more specific bindings before more generic bindings. Take
720 * the following binding configuration as an example:
722 * bindsym n nop lower-case n pressed
723 * bindsym Shift+n nop upper-case n pressed
725 * Without reordering, the first binding’s event_state_mask of 0x0 would match
726 * the actual event_stat_mask of 0x1 and hence trigger instead of the second
730 void reorder_bindings(void) {
732 SLIST_FOREACH(mode, &modes, modes) {
733 const bool current_mode = (mode->bindings == bindings);
734 reorder_bindings_of_mode(mode);
736 bindings = mode->bindings;
741 * Checks for duplicate key bindings (the same keycode or keysym is configured
742 * more than once). If a duplicate binding is found, a message is printed to
743 * stderr and the has_errors variable is set to true, which will start
747 void check_for_duplicate_bindings(struct context *context) {
748 Binding *bind, *current;
749 TAILQ_FOREACH(current, bindings, bindings) {
750 TAILQ_FOREACH(bind, bindings, bindings) {
751 /* Abort when we reach the current keybinding, only check the
756 /* Check if the input types are different */
757 if (bind->input_type != current->input_type)
760 /* Check if one is using keysym while the other is using bindsym.
762 if ((bind->symbol == NULL && current->symbol != NULL) ||
763 (bind->symbol != NULL && current->symbol == NULL))
766 /* If bind is NULL, current has to be NULL, too (see above).
767 * If the keycodes differ, it can't be a duplicate. */
768 if (bind->symbol != NULL &&
769 strcasecmp(bind->symbol, current->symbol) != 0)
772 /* Check if the keycodes or modifiers are different. If so, they
773 * can't be duplicate */
774 if (bind->keycode != current->keycode ||
775 bind->event_state_mask != current->event_state_mask ||
776 bind->release != current->release)
779 context->has_errors = true;
780 if (current->keycode != 0) {
781 ELOG("Duplicate keybinding in config file:\n state mask 0x%x with keycode %d, command \"%s\"\n",
782 current->event_state_mask, current->keycode, current->command);
784 ELOG("Duplicate keybinding in config file:\n state mask 0x%x with keysym %s, command \"%s\"\n",
785 current->event_state_mask, current->symbol, current->command);
792 * Creates a dynamically allocated copy of bind.
794 static Binding *binding_copy(Binding *bind) {
795 Binding *ret = smalloc(sizeof(Binding));
797 if (bind->symbol != NULL)
798 ret->symbol = sstrdup(bind->symbol);
799 if (bind->command != NULL)
800 ret->command = sstrdup(bind->command);
801 TAILQ_INIT(&(ret->keycodes_head));
802 struct Binding_Keycode *binding_keycode;
803 TAILQ_FOREACH(binding_keycode, &(bind->keycodes_head), keycodes) {
804 struct Binding_Keycode *ret_binding_keycode = smalloc(sizeof(struct Binding_Keycode));
805 *ret_binding_keycode = *binding_keycode;
806 TAILQ_INSERT_TAIL(&(ret->keycodes_head), ret_binding_keycode, keycodes);
813 * Frees the binding. If bind is null, it simply returns.
815 void binding_free(Binding *bind) {
820 while (!TAILQ_EMPTY(&(bind->keycodes_head))) {
821 struct Binding_Keycode *first = TAILQ_FIRST(&(bind->keycodes_head));
822 TAILQ_REMOVE(&(bind->keycodes_head), first, keycodes);
832 * Runs the given binding and handles parse errors. If con is passed, it will
833 * execute the command binding with that container selected by criteria.
834 * Returns a CommandResult for running the binding's command. Free with
835 * command_result_free().
838 CommandResult *run_binding(Binding *bind, Con *con) {
841 /* We need to copy the binding and command since “reload” may be part of
842 * the command, and then the memory that bind points to may not contain the
843 * same data anymore. */
845 command = sstrdup(bind->command);
847 sasprintf(&command, "[con_id=\"%p\"] %s", con, bind->command);
849 Binding *bind_cp = binding_copy(bind);
850 CommandResult *result = parse_command(command, NULL);
853 if (result->needs_tree_render)
856 if (result->parse_error) {
858 sasprintf(&pageraction, "i3-sensible-pager \"%s\"\n", errorfilename);
860 NULL, /* will be replaced by the executable path */
866 "The configured command for this shortcut could not be run successfully.",
871 start_nagbar(&command_error_nagbar_pid, argv);
875 ipc_send_binding_event("run", bind_cp);
876 binding_free(bind_cp);
881 static int fill_rmlvo_from_root(struct xkb_rule_names *xkb_names) {
882 xcb_intern_atom_reply_t *atom_reply;
883 size_t content_max_words = 256;
885 xcb_window_t root = root_screen->root;
887 atom_reply = xcb_intern_atom_reply(
888 conn, xcb_intern_atom(conn, 0, strlen("_XKB_RULES_NAMES"), "_XKB_RULES_NAMES"), NULL);
889 if (atom_reply == NULL)
892 xcb_get_property_cookie_t prop_cookie;
893 xcb_get_property_reply_t *prop_reply;
894 prop_cookie = xcb_get_property_unchecked(conn, false, root, atom_reply->atom,
895 XCB_GET_PROPERTY_TYPE_ANY, 0, content_max_words);
896 prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);
897 if (prop_reply == NULL) {
901 if (xcb_get_property_value_length(prop_reply) > 0 && prop_reply->bytes_after > 0) {
902 /* We received an incomplete value. Ask again but with a properly
904 content_max_words += ceil(prop_reply->bytes_after / 4.0);
905 /* Repeat the request, with adjusted size */
907 prop_cookie = xcb_get_property_unchecked(conn, false, root, atom_reply->atom,
908 XCB_GET_PROPERTY_TYPE_ANY, 0, content_max_words);
909 prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);
910 if (prop_reply == NULL) {
915 if (xcb_get_property_value_length(prop_reply) == 0) {
921 const char *walk = (const char *)xcb_get_property_value(prop_reply);
922 int remaining = xcb_get_property_value_length(prop_reply);
923 for (int i = 0; i < 5 && remaining > 0; i++) {
924 const int len = strnlen(walk, remaining);
928 sasprintf((char **)&(xkb_names->rules), "%.*s", len, walk);
931 sasprintf((char **)&(xkb_names->model), "%.*s", len, walk);
934 sasprintf((char **)&(xkb_names->layout), "%.*s", len, walk);
937 sasprintf((char **)&(xkb_names->variant), "%.*s", len, walk);
940 sasprintf((char **)&(xkb_names->options), "%.*s", len, walk);
943 DLOG("component %d of _XKB_RULES_NAMES is \"%.*s\"\n", i, len, walk);
953 * Loads the XKB keymap from the X11 server and feeds it to xkbcommon.
956 bool load_keymap(void) {
957 if (xkb_context == NULL) {
958 if ((xkb_context = xkb_context_new(0)) == NULL) {
959 ELOG("Could not create xkbcommon context\n");
964 struct xkb_keymap *new_keymap = NULL;
966 if (xkb_supported && (device_id = xkb_x11_get_core_keyboard_device_id(conn)) > -1) {
967 if ((new_keymap = xkb_x11_keymap_new_from_device(xkb_context, conn, device_id, 0)) == NULL) {
968 ELOG("xkb_x11_keymap_new_from_device failed\n");
972 /* Likely there is no XKB support on this server, possibly because it
973 * is a VNC server. */
974 LOG("No XKB / core keyboard device? Assembling keymap from local RMLVO.\n");
975 struct xkb_rule_names names = {
981 if (fill_rmlvo_from_root(&names) == -1) {
982 ELOG("Could not get _XKB_RULES_NAMES atom from root window, falling back to defaults.\n");
983 if ((new_keymap = xkb_keymap_new_from_names(xkb_context, &names, 0)) == NULL) {
984 ELOG("xkb_keymap_new_from_names(NULL) failed\n");
988 new_keymap = xkb_keymap_new_from_names(xkb_context, &names, 0);
989 free((char *)names.rules);
990 free((char *)names.model);
991 free((char *)names.layout);
992 free((char *)names.variant);
993 free((char *)names.options);
994 if (new_keymap == NULL) {
995 ELOG("xkb_keymap_new_from_names(RMLVO) failed\n");
999 xkb_keymap_unref(xkb_keymap);
1000 xkb_keymap = new_keymap;
1006 * Returns a list of buttons that should be grabbed on a window.
1007 * This list will always contain 1–3, all higher buttons will only be returned
1008 * if there is a whole-window binding for it on some window in the current
1010 * The list is terminated by a 0.
1012 int *bindings_get_buttons_to_grab(void) {
1013 /* Let's make the reasonable assumption that there's no more than 25
1017 int buffer[num_max];
1020 /* We always return buttons 1 through 3. */
1026 TAILQ_FOREACH(bind, bindings, bindings) {
1027 if (num + 1 == num_max)
1030 /* We are only interested in whole window mouse bindings. */
1031 if (bind->input_type != B_MOUSE || !bind->whole_window)
1035 if (!parse_long(bind->symbol + (sizeof("button") - 1), &button, 10)) {
1036 ELOG("Could not parse button number, skipping this binding. Please report this bug in i3.\n");
1040 /* Avoid duplicates. */
1041 for (int i = 0; i < num; i++) {
1042 if (buffer[i] == button)
1046 buffer[num++] = button;
1050 int *buttons = scalloc(num, sizeof(int));
1051 memcpy(buttons, buffer, num * sizeof(int));