2 #define I3__FILE__ "handlers.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
9 * handlers.c: Small handlers for various events (keypresses, focus changes,
18 #include <xcb/randr.h>
19 #define SN_API_NOT_YET_FROZEN 1
20 #include <libsn/sn-monitor.h>
24 int xkb_current_group;
26 /* After mapping/unmapping windows, a notify event is generated. However, we don’t want it,
27 since it’d trigger an infinite loop of switching between the different windows when
28 changing workspaces */
29 static SLIST_HEAD(ignore_head, Ignore_Event) ignore_events;
32 * Adds the given sequence to the list of events which are ignored.
33 * If this ignore should only affect a specific response_type, pass
34 * response_type, otherwise, pass -1.
36 * Every ignored sequence number gets garbage collected after 5 seconds.
39 void add_ignore_event(const int sequence, const int response_type) {
40 struct Ignore_Event *event = smalloc(sizeof(struct Ignore_Event));
42 event->sequence = sequence;
43 event->response_type = response_type;
44 event->added = time(NULL);
46 SLIST_INSERT_HEAD(&ignore_events, event, ignore_events);
50 * Checks if the given sequence is ignored and returns true if so.
53 bool event_is_ignored(const int sequence, const int response_type) {
54 struct Ignore_Event *event;
55 time_t now = time(NULL);
56 for (event = SLIST_FIRST(&ignore_events); event != SLIST_END(&ignore_events);) {
57 if ((now - event->added) > 5) {
58 struct Ignore_Event *save = event;
59 event = SLIST_NEXT(event, ignore_events);
60 SLIST_REMOVE(&ignore_events, save, Ignore_Event, ignore_events);
63 event = SLIST_NEXT(event, ignore_events);
66 SLIST_FOREACH(event, &ignore_events, ignore_events) {
67 if (event->sequence != sequence)
70 if (event->response_type != -1 &&
71 event->response_type != response_type)
74 /* instead of removing a sequence number we better wait until it gets
75 * garbage collected. it may generate multiple events (there are multiple
76 * enter_notifies for one configure_request, for example). */
77 //SLIST_REMOVE(&ignore_events, event, Ignore_Event, ignore_events);
86 * Called with coordinates of an enter_notify event or motion_notify event
87 * to check if the user crossed virtual screen boundaries and adjust the
88 * current workspace, if so.
91 static void check_crossing_screen_boundary(uint32_t x, uint32_t y) {
94 /* If the user disable focus follows mouse, we have nothing to do here */
95 if (config.disable_focus_follows_mouse)
98 if ((output = get_output_containing(x, y)) == NULL) {
99 ELOG("ERROR: No such screen\n");
103 if (output->con == NULL) {
104 ELOG("ERROR: The screen is not recognized by i3 (no container associated)\n");
108 /* Focus the output on which the user moved their cursor */
109 Con *old_focused = focused;
110 Con *next = con_descend_focused(output_get_content(output->con));
111 /* Since we are switching outputs, this *must* be a different workspace, so
112 * call workspace_show() */
113 workspace_show(con_get_workspace(next));
116 /* If the focus changed, we re-render to get updated decorations */
117 if (old_focused != focused)
122 * When the user moves the mouse pointer onto a window, this callback gets called.
125 static void handle_enter_notify(xcb_enter_notify_event_t *event) {
128 last_timestamp = event->time;
130 DLOG("enter_notify for %08x, mode = %d, detail %d, serial %d\n",
131 event->event, event->mode, event->detail, event->sequence);
132 DLOG("coordinates %d, %d\n", event->event_x, event->event_y);
133 if (event->mode != XCB_NOTIFY_MODE_NORMAL) {
134 DLOG("This was not a normal notify, ignoring\n");
137 /* Some events are not interesting, because they were not generated
138 * actively by the user, but by reconfiguration of windows */
139 if (event_is_ignored(event->sequence, XCB_ENTER_NOTIFY)) {
140 DLOG("Event ignored\n");
144 bool enter_child = false;
145 /* Get container by frame or by child window */
146 if ((con = con_by_frame_id(event->event)) == NULL) {
147 con = con_by_window_id(event->event);
151 /* If not, then the user moved their cursor to the root window. In that case, we adjust c_ws */
153 DLOG("Getting screen at %d x %d\n", event->root_x, event->root_y);
154 check_crossing_screen_boundary(event->root_x, event->root_y);
158 if (con->parent->type == CT_DOCKAREA) {
159 DLOG("Ignoring, this is a dock client\n");
163 /* see if the user entered the window on a certain window decoration */
164 layout_t layout = (enter_child ? con->parent->layout : con->layout);
165 if (layout == L_DEFAULT) {
167 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
168 if (rect_contains(child->deco_rect, event->event_x, event->event_y)) {
169 LOG("using child %p / %s instead!\n", child, child->name);
176 if (client->workspace != c_ws && client->workspace->output == c_ws->output) {
177 /* This can happen when a client gets assigned to a different workspace than
178 * the current one (see src/mainx.c:reparent_window). Shortly after it was created,
179 * an enter_notify will follow. */
180 DLOG("enter_notify for a client on a different workspace but the same screen, ignoring\n");
185 if (config.disable_focus_follows_mouse)
188 /* if this container is already focused, there is nothing to do. */
192 /* Get the currently focused workspace to check if the focus change also
193 * involves changing workspaces. If so, we need to call workspace_show() to
194 * correctly update state and send the IPC event. */
195 Con *ws = con_get_workspace(con);
196 if (ws != con_get_workspace(focused))
199 focused_id = XCB_NONE;
200 con_focus(con_descend_focused(con));
207 * When the user moves the mouse but does not change the active window
208 * (e.g. when having no windows opened but moving mouse on the root screen
209 * and crossing virtual screen boundaries), this callback gets called.
212 static void handle_motion_notify(xcb_motion_notify_event_t *event) {
213 last_timestamp = event->time;
215 /* Skip events where the pointer was over a child window, we are only
216 * interested in events on the root window. */
217 if (event->child != XCB_NONE)
221 if ((con = con_by_frame_id(event->event)) == NULL) {
222 DLOG("MotionNotify for an unknown container, checking if it crosses screen boundaries.\n");
223 check_crossing_screen_boundary(event->root_x, event->root_y);
227 if (config.disable_focus_follows_mouse)
230 if (con->layout != L_DEFAULT && con->layout != L_SPLITV && con->layout != L_SPLITH)
233 /* see over which rect the user is */
235 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
236 if (!rect_contains(current->deco_rect, event->event_x, event->event_y))
239 /* We found the rect, let’s see if this window is focused */
240 if (TAILQ_FIRST(&(con->focus_head)) == current)
244 x_push_changes(croot);
250 * Called when the keyboard mapping changes (for example by using Xmodmap),
251 * we need to update our key bindings then (re-translate symbols).
254 static void handle_mapping_notify(xcb_mapping_notify_event_t *event) {
255 if (event->request != XCB_MAPPING_KEYBOARD &&
256 event->request != XCB_MAPPING_MODIFIER)
259 DLOG("Received mapping_notify for keyboard or modifier mapping, re-grabbing keys\n");
260 xcb_refresh_keyboard_mapping(keysyms, event);
262 xcb_numlock_mask = aio_get_mod_mask_for(XCB_NUM_LOCK, keysyms);
264 ungrab_all_keys(conn);
272 * A new window appeared on the screen (=was mapped), so let’s manage it.
275 static void handle_map_request(xcb_map_request_event_t *event) {
276 xcb_get_window_attributes_cookie_t cookie;
278 cookie = xcb_get_window_attributes_unchecked(conn, event->window);
280 DLOG("window = 0x%08x, serial is %d.\n", event->window, event->sequence);
281 add_ignore_event(event->sequence, -1);
283 manage_window(event->window, cookie, false);
288 * Configure requests are received when the application wants to resize windows
291 * We generate a synthethic configure notify event to signalize the client its
295 static void handle_configure_request(xcb_configure_request_event_t *event) {
298 DLOG("window 0x%08x wants to be at %dx%d with %dx%d\n",
299 event->window, event->x, event->y, event->width, event->height);
301 /* For unmanaged windows, we just execute the configure request. As soon as
302 * it gets mapped, we will take over anyways. */
303 if ((con = con_by_window_id(event->window)) == NULL) {
304 DLOG("Configure request for unmanaged window, can do that.\n");
309 #define COPY_MASK_MEMBER(mask_member, event_member) \
311 if (event->value_mask & mask_member) { \
312 mask |= mask_member; \
313 values[c++] = event->event_member; \
317 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_X, x);
318 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_Y, y);
319 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_WIDTH, width);
320 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_HEIGHT, height);
321 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_BORDER_WIDTH, border_width);
322 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_SIBLING, sibling);
323 COPY_MASK_MEMBER(XCB_CONFIG_WINDOW_STACK_MODE, stack_mode);
325 xcb_configure_window(conn, event->window, mask, values);
331 DLOG("Configure request!\n");
333 Con *workspace = con_get_workspace(con),
336 /* There might not be a corresponding workspace for dock cons, therefore we
337 * have to be careful here. */
339 fullscreen = con_get_fullscreen_con(workspace, CF_OUTPUT);
341 fullscreen = con_get_fullscreen_con(workspace, CF_GLOBAL);
344 if (fullscreen != con && con_is_floating(con) && con_is_leaf(con)) {
345 /* find the height for the decorations */
346 int deco_height = con->deco_rect.height;
347 /* we actually need to apply the size/position changes to the *parent*
349 Rect bsr = con_border_style_rect(con);
350 if (con->border_style == BS_NORMAL) {
351 bsr.y += deco_height;
352 bsr.height -= deco_height;
354 Con *floatingcon = con->parent;
356 if (strcmp(con_get_workspace(floatingcon)->name, "__i3_scratch") == 0) {
357 DLOG("This is a scratchpad container, ignoring ConfigureRequest\n");
361 Rect newrect = floatingcon->rect;
363 if (event->value_mask & XCB_CONFIG_WINDOW_X) {
364 newrect.x = event->x + (-1) * bsr.x;
365 DLOG("proposed x = %d, new x is %d\n", event->x, newrect.x);
367 if (event->value_mask & XCB_CONFIG_WINDOW_Y) {
368 newrect.y = event->y + (-1) * bsr.y;
369 DLOG("proposed y = %d, new y is %d\n", event->y, newrect.y);
371 if (event->value_mask & XCB_CONFIG_WINDOW_WIDTH) {
372 newrect.width = event->width + (-1) * bsr.width;
373 newrect.width += con->border_width * 2;
374 DLOG("proposed width = %d, new width is %d (x11 border %d)\n",
375 event->width, newrect.width, con->border_width);
377 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
378 newrect.height = event->height + (-1) * bsr.height;
379 newrect.height += con->border_width * 2;
380 DLOG("proposed height = %d, new height is %d (x11 border %d)\n",
381 event->height, newrect.height, con->border_width);
384 DLOG("Container is a floating leaf node, will do that.\n");
385 floating_reposition(floatingcon, newrect);
389 /* Dock windows can be reconfigured in their height and moved to another output. */
390 if (con->parent && con->parent->type == CT_DOCKAREA) {
391 DLOG("Reconfiguring dock window (con = %p).\n", con);
392 if (event->value_mask & XCB_CONFIG_WINDOW_HEIGHT) {
393 DLOG("Dock client wants to change height to %d, we can do that.\n", event->height);
395 con->geometry.height = event->height;
399 if (event->value_mask & XCB_CONFIG_WINDOW_X || event->value_mask & XCB_CONFIG_WINDOW_Y) {
400 int16_t x = event->value_mask & XCB_CONFIG_WINDOW_X ? event->x : (int16_t)con->geometry.x;
401 int16_t y = event->value_mask & XCB_CONFIG_WINDOW_Y ? event->y : (int16_t)con->geometry.y;
403 Con *current_output = con_get_output(con);
404 Output *target = get_output_containing(x, y);
405 if (target != NULL && current_output != target->con) {
406 DLOG("Dock client is requested to be moved to output %s, moving it there.\n", target->name);
408 Con *nc = con_for_window(target->con, con->window, &match);
409 DLOG("Dock client will be moved to container %p.\n", nc);
411 con_attach(con, nc, false);
415 DLOG("Dock client will not be moved, we only support moving it to another output.\n");
420 fake_absolute_configure_notify(con);
427 * Configuration notifies are only handled because we need to set up ignore for
428 * the following enter notify events.
431 int handle_configure_event(void *prophs, xcb_connection_t *conn, xcb_configure_notify_event_t *event) {
432 DLOG("configure_event, sequence %d\n", event->sequence);
433 /* We ignore this sequence twice because events for child and frame should be ignored */
434 add_ignore_event(event->sequence);
435 add_ignore_event(event->sequence);
442 * Gets triggered upon a RandR screen change event, that is when the user
443 * changes the screen configuration in any way (mode, position, …)
446 static void handle_screen_change(xcb_generic_event_t *e) {
447 DLOG("RandR screen change\n");
449 /* The geometry of the root window is used for “fullscreen global” and
450 * changes when new outputs are added. */
451 xcb_get_geometry_cookie_t cookie = xcb_get_geometry(conn, root);
452 xcb_get_geometry_reply_t *reply = xcb_get_geometry_reply(conn, cookie, NULL);
454 ELOG("Could not get geometry of the root window, exiting\n");
457 DLOG("root geometry reply: (%d, %d) %d x %d\n", reply->x, reply->y, reply->width, reply->height);
459 croot->rect.width = reply->width;
460 croot->rect.height = reply->height;
462 randr_query_outputs();
464 scratchpad_fix_resolution();
466 ipc_send_event("output", I3_IPC_EVENT_OUTPUT, "{\"change\":\"unspecified\"}");
472 * Our window decorations were unmapped. That means, the window will be killed
473 * now, so we better clean up before.
476 static void handle_unmap_notify_event(xcb_unmap_notify_event_t *event) {
477 DLOG("UnmapNotify for 0x%08x (received from 0x%08x), serial %d\n", event->window, event->event, event->sequence);
478 xcb_get_input_focus_cookie_t cookie;
479 Con *con = con_by_window_id(event->window);
481 /* This could also be an UnmapNotify for the frame. We need to
482 * decrement the ignore_unmap counter. */
483 con = con_by_frame_id(event->window);
485 LOG("Not a managed window, ignoring UnmapNotify event\n");
489 if (con->ignore_unmap > 0)
491 /* See the end of this function. */
492 cookie = xcb_get_input_focus(conn);
493 DLOG("ignore_unmap = %d for frame of container %p\n", con->ignore_unmap, con);
497 /* See the end of this function. */
498 cookie = xcb_get_input_focus(conn);
500 if (con->ignore_unmap > 0) {
501 DLOG("ignore_unmap = %d, dec\n", con->ignore_unmap);
506 /* Since we close the container, we need to unset _NET_WM_DESKTOP and
507 * _NET_WM_STATE according to the spec. */
508 xcb_delete_property(conn, event->window, A__NET_WM_DESKTOP);
509 xcb_delete_property(conn, event->window, A__NET_WM_STATE);
511 tree_close_internal(con, DONT_KILL_WINDOW, false, false);
515 /* If the client (as opposed to i3) destroyed or unmapped a window, an
516 * EnterNotify event will follow (indistinguishable from an EnterNotify
517 * event caused by moving your mouse), causing i3 to set focus to whichever
518 * window is now visible.
520 * In a complex stacked or tabbed layout (take two v-split containers in a
521 * tabbed container), when the bottom window in tab2 is closed, the bottom
522 * window of tab1 is visible instead. X11 will thus send an EnterNotify
523 * event for the bottom window of tab1, while the focus should be set to
524 * the remaining window of tab2.
526 * Therefore, we ignore all EnterNotify events which have the same sequence
527 * as an UnmapNotify event. */
528 add_ignore_event(event->sequence, XCB_ENTER_NOTIFY);
530 /* Since we just ignored the sequence of this UnmapNotify, we want to make
531 * sure that following events use a different sequence. When putting xterm
532 * into fullscreen and moving the pointer to a different window, without
533 * using GetInputFocus, subsequent (legitimate) EnterNotify events arrived
534 * with the same sequence and thus were ignored (see ticket #609). */
535 free(xcb_get_input_focus_reply(conn, cookie, NULL));
539 * A destroy notify event is sent when the window is not unmapped, but
540 * immediately destroyed (for example when starting a window and immediately
541 * killing the program which started it).
543 * We just pass on the event to the unmap notify handler (by copying the
544 * important fields in the event data structure).
547 static void handle_destroy_notify_event(xcb_destroy_notify_event_t *event) {
548 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window);
550 xcb_unmap_notify_event_t unmap;
551 unmap.sequence = event->sequence;
552 unmap.event = event->event;
553 unmap.window = event->window;
555 handle_unmap_notify_event(&unmap);
558 static bool window_name_changed(i3Window *window, char *old_name) {
559 if ((old_name == NULL) && (window->name == NULL))
562 /* Either the old or the new one is NULL, but not both. */
563 if ((old_name == NULL) ^ (window->name == NULL))
566 return (strcmp(old_name, i3string_as_utf8(window->name)) != 0);
570 * Called when a window changes its title
573 static bool handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
574 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
576 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
579 char *old_name = (con->window->name != NULL ? sstrdup(i3string_as_utf8(con->window->name)) : NULL);
581 window_update_name(con->window, prop, false);
583 x_push_changes(croot);
585 if (window_name_changed(con->window, old_name))
586 ipc_send_window_event("title", con);
594 * Handles legacy window name updates (WM_NAME), see also src/window.c,
595 * window_update_name_legacy().
598 static bool handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
599 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
601 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
604 char *old_name = (con->window->name != NULL ? sstrdup(i3string_as_utf8(con->window->name)) : NULL);
606 window_update_name_legacy(con->window, prop, false);
608 x_push_changes(croot);
610 if (window_name_changed(con->window, old_name))
611 ipc_send_window_event("title", con);
619 * Called when a window changes its WM_WINDOW_ROLE.
622 static bool handle_windowrole_change(void *data, xcb_connection_t *conn, uint8_t state,
623 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
625 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
628 window_update_role(con->window, prop, false);
635 * Updates the client’s WM_CLASS property
638 static int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
639 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
641 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
644 window_update_class(con->window, prop, false);
651 * Expose event means we should redraw our windows (= title bar)
654 static void handle_expose_event(xcb_expose_event_t *event) {
657 DLOG("window = %08x\n", event->window);
659 if ((parent = con_by_frame_id(event->window)) == NULL) {
660 LOG("expose event for unknown window, ignoring\n");
664 /* Since we render to our surface on every change anyways, expose events
665 * only tell us that the X server lost (parts of) the window contents. We
666 * can handle that by copying the appropriate part from our surface to the
668 draw_util_copy_surface(conn, &(parent->frame_buffer), &(parent->frame),
669 event->x, event->y, event->x, event->y,
670 event->width, event->height);
675 #define _NET_WM_MOVERESIZE_SIZE_TOPLEFT 0
676 #define _NET_WM_MOVERESIZE_SIZE_TOP 1
677 #define _NET_WM_MOVERESIZE_SIZE_TOPRIGHT 2
678 #define _NET_WM_MOVERESIZE_SIZE_RIGHT 3
679 #define _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT 4
680 #define _NET_WM_MOVERESIZE_SIZE_BOTTOM 5
681 #define _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT 6
682 #define _NET_WM_MOVERESIZE_SIZE_LEFT 7
683 #define _NET_WM_MOVERESIZE_MOVE 8 /* movement only */
684 #define _NET_WM_MOVERESIZE_SIZE_KEYBOARD 9 /* size via keyboard */
685 #define _NET_WM_MOVERESIZE_MOVE_KEYBOARD 10 /* move via keyboard */
686 #define _NET_WM_MOVERESIZE_CANCEL 11 /* cancel operation */
689 * Handle client messages (EWMH)
692 static void handle_client_message(xcb_client_message_event_t *event) {
693 /* If this is a startup notification ClientMessage, the library will handle
694 * it and call our monitor_event() callback. */
695 if (sn_xcb_display_process_event(sndisplay, (xcb_generic_event_t *)event))
698 LOG("ClientMessage for window 0x%08x\n", event->window);
699 if (event->type == A__NET_WM_STATE) {
700 if (event->format != 32 ||
701 (event->data.data32[1] != A__NET_WM_STATE_FULLSCREEN &&
702 event->data.data32[1] != A__NET_WM_STATE_DEMANDS_ATTENTION &&
703 event->data.data32[1] != A__NET_WM_STATE_STICKY)) {
704 DLOG("Unknown atom in clientmessage of type %d\n", event->data.data32[1]);
708 Con *con = con_by_window_id(event->window);
710 DLOG("Could not get window for client message\n");
714 if (event->data.data32[1] == A__NET_WM_STATE_FULLSCREEN) {
715 /* Check if the fullscreen state should be toggled */
716 if ((con->fullscreen_mode != CF_NONE &&
717 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
718 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
719 (con->fullscreen_mode == CF_NONE &&
720 (event->data.data32[0] == _NET_WM_STATE_ADD ||
721 event->data.data32[0] == _NET_WM_STATE_TOGGLE))) {
722 DLOG("toggling fullscreen\n");
723 con_toggle_fullscreen(con, CF_OUTPUT);
725 } else if (event->data.data32[1] == A__NET_WM_STATE_DEMANDS_ATTENTION) {
726 /* Check if the urgent flag must be set or not */
727 if (event->data.data32[0] == _NET_WM_STATE_ADD)
728 con_set_urgency(con, true);
729 else if (event->data.data32[0] == _NET_WM_STATE_REMOVE)
730 con_set_urgency(con, false);
731 else if (event->data.data32[0] == _NET_WM_STATE_TOGGLE)
732 con_set_urgency(con, !con->urgent);
733 } else if (event->data.data32[1] == A__NET_WM_STATE_STICKY) {
734 DLOG("Received a client message to modify _NET_WM_STATE_STICKY.\n");
735 if (event->data.data32[0] == _NET_WM_STATE_ADD)
737 else if (event->data.data32[0] == _NET_WM_STATE_REMOVE)
739 else if (event->data.data32[0] == _NET_WM_STATE_TOGGLE)
740 con->sticky = !con->sticky;
742 DLOG("New sticky status for con = %p is %i.\n", con, con->sticky);
743 ewmh_update_sticky(con->window->id, con->sticky);
744 output_push_sticky_windows(focused);
745 ewmh_update_wm_desktop();
749 } else if (event->type == A__NET_ACTIVE_WINDOW) {
750 if (event->format != 32)
753 DLOG("_NET_ACTIVE_WINDOW: Window 0x%08x should be activated\n", event->window);
755 Con *con = con_by_window_id(event->window);
757 DLOG("Could not get window for client message\n");
761 Con *ws = con_get_workspace(con);
764 DLOG("Window is not being managed, ignoring _NET_ACTIVE_WINDOW\n");
768 if (con_is_internal(ws)) {
769 DLOG("Workspace is internal, ignoring _NET_ACTIVE_WINDOW\n");
773 /* data32[0] indicates the source of the request (application or pager) */
774 if (event->data.data32[0] == 2) {
775 /* Always focus the con if it is from a pager, because this is most
776 * likely from some user action */
777 DLOG("This request came from a pager. Focusing con = %p\n", con);
781 /* Request is from an application. */
783 if (config.focus_on_window_activation == FOWA_FOCUS || (config.focus_on_window_activation == FOWA_SMART && workspace_is_visible(ws))) {
784 DLOG("Focusing con = %p\n", con);
787 } else if (config.focus_on_window_activation == FOWA_URGENT || (config.focus_on_window_activation == FOWA_SMART && !workspace_is_visible(ws))) {
788 DLOG("Marking con = %p urgent\n", con);
789 con_set_urgency(con, true);
791 DLOG("Ignoring request for con = %p.\n", con);
795 } else if (event->type == A_I3_SYNC) {
796 xcb_window_t window = event->data.data32[0];
797 uint32_t rnd = event->data.data32[1];
798 DLOG("[i3 sync protocol] Sending random value %d back to X11 window 0x%08x\n", rnd, window);
800 void *reply = scalloc(32, 1);
801 xcb_client_message_event_t *ev = reply;
803 ev->response_type = XCB_CLIENT_MESSAGE;
805 ev->type = A_I3_SYNC;
807 ev->data.data32[0] = window;
808 ev->data.data32[1] = rnd;
810 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
813 } else if (event->type == A__NET_REQUEST_FRAME_EXTENTS) {
815 * A client can request an estimate for the frame size which the window
816 * manager will put around it before actually mapping its window. Java
817 * does this (as of openjdk-7).
819 * Note that the calculation below is not entirely accurate — once you
820 * set a different border type, it’s off. We _could_ request all the
821 * window properties (which have to be set up at this point according
822 * to EWMH), but that seems rather elaborate. The standard explicitly
823 * says the application must cope with an estimate that is not entirely
826 DLOG("_NET_REQUEST_FRAME_EXTENTS for window 0x%08x\n", event->window);
828 /* The reply data: approximate frame size */
830 config.default_border_width, /* left */
831 config.default_border_width, /* right */
832 config.font.height + 5, /* top */
833 config.default_border_width /* bottom */
837 XCB_PROP_MODE_REPLACE,
839 A__NET_FRAME_EXTENTS,
840 XCB_ATOM_CARDINAL, 32, 4,
843 } else if (event->type == A__NET_CURRENT_DESKTOP) {
844 /* This request is used by pagers and bars to change the current
845 * desktop likely as a result of some user action. We interpret this as
846 * a request to focus the given workspace. See
847 * http://standards.freedesktop.org/wm-spec/latest/ar01s03.html#idm140251368135008
849 DLOG("Request to change current desktop to index %d\n", event->data.data32[0]);
850 Con *ws = ewmh_get_workspace_by_index(event->data.data32[0]);
852 ELOG("Could not determine workspace for this index, ignoring request.\n");
856 DLOG("Handling request to focus workspace %s\n", ws->name);
859 } else if (event->type == A__NET_WM_DESKTOP) {
860 uint32_t index = event->data.data32[0];
861 DLOG("Request to move window %d to EWMH desktop index %d\n", event->window, index);
863 Con *con = con_by_window_id(event->window);
865 DLOG("Couldn't find con for window %d, ignoring the request.\n", event->window);
869 if (index == NET_WM_DESKTOP_ALL) {
870 /* The window is requesting to be visible on all workspaces, so
871 * let's float it and make it sticky. */
872 DLOG("The window was requested to be visible on all workspaces, making it sticky and floating.\n");
874 floating_enable(con, false);
877 ewmh_update_sticky(con->window->id, true);
878 output_push_sticky_windows(focused);
880 Con *ws = ewmh_get_workspace_by_index(index);
882 ELOG("Could not determine workspace for this index, ignoring request.\n");
886 con_move_to_workspace(con, ws, true, false, false);
890 ewmh_update_wm_desktop();
891 } else if (event->type == A__NET_CLOSE_WINDOW) {
893 * Pagers wanting to close a window MUST send a _NET_CLOSE_WINDOW
894 * client message request to the root window.
895 * http://standards.freedesktop.org/wm-spec/wm-spec-latest.html#idm140200472668896
897 Con *con = con_by_window_id(event->window);
899 DLOG("Handling _NET_CLOSE_WINDOW request (con = %p)\n", con);
901 if (event->data.data32[0])
902 last_timestamp = event->data.data32[0];
904 tree_close_internal(con, KILL_WINDOW, false, false);
907 DLOG("Couldn't find con for _NET_CLOSE_WINDOW request. (window = %d)\n", event->window);
909 } else if (event->type == A__NET_WM_MOVERESIZE) {
911 * Client-side decorated Gtk3 windows emit this signal when being
912 * dragged by their GtkHeaderBar
914 Con *con = con_by_window_id(event->window);
915 if (!con || !con_is_floating(con)) {
916 DLOG("Couldn't find con for _NET_WM_MOVERESIZE request, or con not floating (window = %d)\n", event->window);
919 DLOG("Handling _NET_WM_MOVERESIZE request (con = %p)\n", con);
920 uint32_t direction = event->data.data32[2];
921 uint32_t x_root = event->data.data32[0];
922 uint32_t y_root = event->data.data32[1];
923 /* construct fake xcb_button_press_event_t */
924 xcb_button_press_event_t fake = {
927 .event_x = x_root - (con->rect.x),
928 .event_y = y_root - (con->rect.y)};
930 case _NET_WM_MOVERESIZE_MOVE:
931 floating_drag_window(con->parent, &fake);
933 case _NET_WM_MOVERESIZE_SIZE_TOPLEFT... _NET_WM_MOVERESIZE_SIZE_LEFT:
934 floating_resize_window(con->parent, false, &fake);
937 DLOG("_NET_WM_MOVERESIZE direction %d not implemented\n", direction);
941 DLOG("Skipping client message for unhandled type %d\n", event->type);
945 bool handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
946 xcb_atom_t atom, xcb_get_property_reply_t *reply) {
948 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
951 window_update_type(con->window, reply);
956 * Handles the size hints set by a window, but currently only the part necessary for displaying
957 * clients proportionally inside their frames (mplayer for example)
959 * See ICCCM 4.1.2.3 for more details
962 static bool handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
963 xcb_atom_t name, xcb_get_property_reply_t *reply) {
964 Con *con = con_by_window_id(window);
966 DLOG("Received WM_NORMAL_HINTS for unknown client\n");
970 xcb_size_hints_t size_hints;
972 //CLIENT_LOG(client);
974 /* If the hints were already in this event, use them, if not, request them */
976 xcb_icccm_get_wm_size_hints_from_reply(&size_hints, reply);
978 xcb_icccm_get_wm_normal_hints_reply(conn, xcb_icccm_get_wm_normal_hints_unchecked(conn, con->window->id), &size_hints, NULL);
980 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE)) {
981 // TODO: Minimum size is not yet implemented
982 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
985 bool changed = false;
986 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC)) {
987 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF)
988 if (con->window->width_increment != size_hints.width_inc) {
989 con->window->width_increment = size_hints.width_inc;
992 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF)
993 if (con->window->height_increment != size_hints.height_inc) {
994 con->window->height_increment = size_hints.height_inc;
999 DLOG("resize increments changed\n");
1002 int base_width = 0, base_height = 0;
1004 /* base_width/height are the desired size of the window.
1005 We check if either the program-specified size or the program-specified
1006 min-size is available */
1007 if (size_hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE) {
1008 base_width = size_hints.base_width;
1009 base_height = size_hints.base_height;
1010 } else if (size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) {
1011 /* TODO: is this right? icccm says not */
1012 base_width = size_hints.min_width;
1013 base_height = size_hints.min_height;
1016 if (base_width != con->window->base_width ||
1017 base_height != con->window->base_height) {
1018 con->window->base_width = base_width;
1019 con->window->base_height = base_height;
1020 DLOG("client's base_height changed to %d\n", base_height);
1021 DLOG("client's base_width changed to %d\n", base_width);
1025 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
1026 if (!(size_hints.flags & XCB_ICCCM_SIZE_HINT_P_ASPECT) ||
1027 (size_hints.min_aspect_num <= 0) ||
1028 (size_hints.min_aspect_den <= 0)) {
1029 goto render_and_return;
1032 /* XXX: do we really use rect here, not window_rect? */
1033 double width = con->rect.width - base_width;
1034 double height = con->rect.height - base_height;
1035 /* Convert numerator/denominator to a double */
1036 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
1037 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
1039 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
1040 DLOG("width = %f, height = %f\n", width, height);
1042 /* Sanity checks, this is user-input, in a way */
1043 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
1044 goto render_and_return;
1046 /* Check if we need to set proportional_* variables using the correct ratio */
1047 double aspect_ratio = 0.0;
1048 if ((width / height) < min_aspect) {
1049 aspect_ratio = min_aspect;
1050 } else if ((width / height) > max_aspect) {
1051 aspect_ratio = max_aspect;
1053 goto render_and_return;
1055 if (fabs(con->window->aspect_ratio - aspect_ratio) > DBL_EPSILON) {
1056 con->window->aspect_ratio = aspect_ratio;
1068 * Handles the WM_HINTS property for extracting the urgency state of the window.
1071 static bool handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1072 xcb_atom_t name, xcb_get_property_reply_t *reply) {
1073 Con *con = con_by_window_id(window);
1075 DLOG("Received WM_HINTS for unknown client\n");
1081 reply = xcb_get_property_reply(conn, xcb_icccm_get_wm_hints(conn, window), NULL);
1082 window_update_hints(con->window, reply, &urgency_hint);
1083 con_set_urgency(con, urgency_hint);
1090 * Handles the transient for hints set by a window, signalizing that this window is a popup window
1091 * for some other window.
1093 * See ICCCM 4.1.2.6 for more details
1096 static bool handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1097 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1100 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) {
1101 DLOG("No such window\n");
1106 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1107 false, window, XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 0, 32),
1113 window_update_transient_for(con->window, prop);
1119 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
1120 * toolwindow (or similar) and to which window it belongs (logical parent).
1123 static bool handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1124 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1126 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
1130 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1131 false, window, A_WM_CLIENT_LEADER, XCB_ATOM_WINDOW, 0, 32),
1137 window_update_leader(con->window, prop);
1143 * Handles FocusIn events which are generated by clients (i3’s focus changes
1144 * don’t generate FocusIn events due to a different EventMask) and updates the
1145 * decorations accordingly.
1148 static void handle_focus_in(xcb_focus_in_event_t *event) {
1149 DLOG("focus change in, for window 0x%08x\n", event->event);
1151 if ((con = con_by_window_id(event->event)) == NULL || con->window == NULL)
1153 DLOG("That is con %p / %s\n", con, con->name);
1155 if (event->mode == XCB_NOTIFY_MODE_GRAB ||
1156 event->mode == XCB_NOTIFY_MODE_UNGRAB) {
1157 DLOG("FocusIn event for grab/ungrab, ignoring\n");
1161 if (event->detail == XCB_NOTIFY_DETAIL_POINTER) {
1162 DLOG("notify detail is pointer, ignoring this event\n");
1166 if (focused_id == event->event) {
1167 DLOG("focus matches the currently focused window, not doing anything\n");
1171 /* Skip dock clients, they cannot get the i3 focus. */
1172 if (con->parent->type == CT_DOCKAREA) {
1173 DLOG("This is a dock client, not focusing.\n");
1177 DLOG("focus is different, updating decorations\n");
1179 /* Get the currently focused workspace to check if the focus change also
1180 * involves changing workspaces. If so, we need to call workspace_show() to
1181 * correctly update state and send the IPC event. */
1182 Con *ws = con_get_workspace(con);
1183 if (ws != con_get_workspace(focused))
1187 /* We update focused_id because we don’t need to set focus again */
1188 focused_id = event->event;
1189 x_push_changes(croot);
1194 * Handles the WM_CLASS property for assignments and criteria selection.
1197 static bool handle_class_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1198 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1200 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
1204 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1205 false, window, XCB_ATOM_WM_CLASS, XCB_ATOM_STRING, 0, 32),
1212 window_update_class(con->window, prop, false);
1218 * Handles the _NET_WM_STRUT_PARTIAL property for allocating space for dock clients.
1221 static bool handle_strut_partial_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1222 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1223 DLOG("strut partial change for window 0x%08x\n", window);
1226 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) {
1231 xcb_generic_error_t *err = NULL;
1232 xcb_get_property_cookie_t strut_cookie = xcb_get_property(conn, false, window, A__NET_WM_STRUT_PARTIAL,
1233 XCB_GET_PROPERTY_TYPE_ANY, 0, UINT32_MAX);
1234 prop = xcb_get_property_reply(conn, strut_cookie, &err);
1237 DLOG("got error when getting strut partial property: %d\n", err->error_code);
1247 DLOG("That is con %p / %s\n", con, con->name);
1249 window_update_strut_partial(con->window, prop);
1251 /* we only handle this change for dock clients */
1252 if (con->parent == NULL || con->parent->type != CT_DOCKAREA) {
1256 Con *search_at = croot;
1257 Con *output = con_get_output(con);
1258 if (output != NULL) {
1259 DLOG("Starting search at output %s\n", output->name);
1263 /* find out the desired position of this dock window */
1264 if (con->window->reserved.top > 0 && con->window->reserved.bottom == 0) {
1265 DLOG("Top dock client\n");
1266 con->window->dock = W_DOCK_TOP;
1267 } else if (con->window->reserved.top == 0 && con->window->reserved.bottom > 0) {
1268 DLOG("Bottom dock client\n");
1269 con->window->dock = W_DOCK_BOTTOM;
1271 DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
1272 if (con->geometry.y < (search_at->rect.height / 2)) {
1273 DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
1274 con->geometry.y, (search_at->rect.height / 2));
1275 con->window->dock = W_DOCK_TOP;
1277 DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
1278 con->geometry.y, (search_at->rect.height / 2));
1279 con->window->dock = W_DOCK_BOTTOM;
1283 /* find the dockarea */
1284 Con *dockarea = con_for_window(search_at, con->window, NULL);
1285 assert(dockarea != NULL);
1287 /* attach the dock to the dock area */
1289 con->parent = dockarea;
1290 TAILQ_INSERT_HEAD(&(dockarea->focus_head), con, focused);
1291 TAILQ_INSERT_HEAD(&(dockarea->nodes_head), con, nodes);
1298 /* Returns false if the event could not be processed (e.g. the window could not
1299 * be found), true otherwise */
1300 typedef bool (*cb_property_handler_t)(void *data, xcb_connection_t *c, uint8_t state, xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *property);
1302 struct property_handler_t {
1305 cb_property_handler_t cb;
1308 static struct property_handler_t property_handlers[] = {
1309 {0, 128, handle_windowname_change},
1310 {0, UINT_MAX, handle_hints},
1311 {0, 128, handle_windowname_change_legacy},
1312 {0, UINT_MAX, handle_normal_hints},
1313 {0, UINT_MAX, handle_clientleader_change},
1314 {0, UINT_MAX, handle_transient_for},
1315 {0, 128, handle_windowrole_change},
1316 {0, 128, handle_class_change},
1317 {0, UINT_MAX, handle_strut_partial_change},
1318 {0, UINT_MAX, handle_window_type}};
1319 #define NUM_HANDLERS (sizeof(property_handlers) / sizeof(struct property_handler_t))
1322 * Sets the appropriate atoms for the property handlers after the atoms were
1326 void property_handlers_init(void) {
1327 sn_monitor_context_new(sndisplay, conn_screen, startup_monitor_event, NULL, NULL);
1329 property_handlers[0].atom = A__NET_WM_NAME;
1330 property_handlers[1].atom = XCB_ATOM_WM_HINTS;
1331 property_handlers[2].atom = XCB_ATOM_WM_NAME;
1332 property_handlers[3].atom = XCB_ATOM_WM_NORMAL_HINTS;
1333 property_handlers[4].atom = A_WM_CLIENT_LEADER;
1334 property_handlers[5].atom = XCB_ATOM_WM_TRANSIENT_FOR;
1335 property_handlers[6].atom = A_WM_WINDOW_ROLE;
1336 property_handlers[7].atom = XCB_ATOM_WM_CLASS;
1337 property_handlers[8].atom = A__NET_WM_STRUT_PARTIAL;
1338 property_handlers[9].atom = A__NET_WM_WINDOW_TYPE;
1341 static void property_notify(uint8_t state, xcb_window_t window, xcb_atom_t atom) {
1342 struct property_handler_t *handler = NULL;
1343 xcb_get_property_reply_t *propr = NULL;
1345 for (size_t c = 0; c < sizeof(property_handlers) / sizeof(struct property_handler_t); c++) {
1346 if (property_handlers[c].atom != atom)
1349 handler = &property_handlers[c];
1353 if (handler == NULL) {
1354 //DLOG("Unhandled property notify for atom %d (0x%08x)\n", atom, atom);
1358 if (state != XCB_PROPERTY_DELETE) {
1359 xcb_get_property_cookie_t cookie = xcb_get_property(conn, 0, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, handler->long_len);
1360 propr = xcb_get_property_reply(conn, cookie, 0);
1363 /* the handler will free() the reply unless it returns false */
1364 if (!handler->cb(NULL, conn, state, window, atom, propr))
1369 * Takes an xcb_generic_event_t and calls the appropriate handler, based on the
1373 void handle_event(int type, xcb_generic_event_t *event) {
1374 if (type != XCB_MOTION_NOTIFY)
1375 DLOG("event type %d, xkb_base %d\n", type, xkb_base);
1377 if (randr_base > -1 &&
1378 type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) {
1379 handle_screen_change(event);
1383 if (xkb_base > -1 && type == xkb_base) {
1384 DLOG("xkb event, need to handle it.\n");
1386 xcb_xkb_state_notify_event_t *state = (xcb_xkb_state_notify_event_t *)event;
1387 if (state->xkbType == XCB_XKB_NEW_KEYBOARD_NOTIFY) {
1388 DLOG("xkb new keyboard notify, sequence %d, time %d\n", state->sequence, state->time);
1389 xcb_key_symbols_free(keysyms);
1390 keysyms = xcb_key_symbols_alloc(conn);
1391 if (((xcb_xkb_new_keyboard_notify_event_t *)event)->changed & XCB_XKB_NKN_DETAIL_KEYCODES)
1392 (void)load_keymap();
1393 ungrab_all_keys(conn);
1394 translate_keysyms();
1395 grab_all_keys(conn);
1396 } else if (state->xkbType == XCB_XKB_MAP_NOTIFY) {
1397 if (event_is_ignored(event->sequence, type)) {
1398 DLOG("Ignoring map notify event for sequence %d.\n", state->sequence);
1400 DLOG("xkb map notify, sequence %d, time %d\n", state->sequence, state->time);
1401 add_ignore_event(event->sequence, type);
1402 xcb_key_symbols_free(keysyms);
1403 keysyms = xcb_key_symbols_alloc(conn);
1404 ungrab_all_keys(conn);
1405 translate_keysyms();
1406 grab_all_keys(conn);
1407 (void)load_keymap();
1409 } else if (state->xkbType == XCB_XKB_STATE_NOTIFY) {
1410 DLOG("xkb state group = %d\n", state->group);
1411 if (xkb_current_group == state->group)
1413 xkb_current_group = state->group;
1414 ungrab_all_keys(conn);
1415 grab_all_keys(conn);
1423 case XCB_KEY_RELEASE:
1424 handle_key_press((xcb_key_press_event_t *)event);
1427 case XCB_BUTTON_PRESS:
1428 case XCB_BUTTON_RELEASE:
1429 handle_button_press((xcb_button_press_event_t *)event);
1432 case XCB_MAP_REQUEST:
1433 handle_map_request((xcb_map_request_event_t *)event);
1436 case XCB_UNMAP_NOTIFY:
1437 handle_unmap_notify_event((xcb_unmap_notify_event_t *)event);
1440 case XCB_DESTROY_NOTIFY:
1441 handle_destroy_notify_event((xcb_destroy_notify_event_t *)event);
1445 handle_expose_event((xcb_expose_event_t *)event);
1448 case XCB_MOTION_NOTIFY:
1449 handle_motion_notify((xcb_motion_notify_event_t *)event);
1452 /* Enter window = user moved their mouse over the window */
1453 case XCB_ENTER_NOTIFY:
1454 handle_enter_notify((xcb_enter_notify_event_t *)event);
1457 /* Client message are sent to the root window. The only interesting
1458 * client message for us is _NET_WM_STATE, we honour
1459 * _NET_WM_STATE_FULLSCREEN and _NET_WM_STATE_DEMANDS_ATTENTION */
1460 case XCB_CLIENT_MESSAGE:
1461 handle_client_message((xcb_client_message_event_t *)event);
1464 /* Configure request = window tried to change size on its own */
1465 case XCB_CONFIGURE_REQUEST:
1466 handle_configure_request((xcb_configure_request_event_t *)event);
1469 /* Mapping notify = keyboard mapping changed (Xmodmap), re-grab bindings */
1470 case XCB_MAPPING_NOTIFY:
1471 handle_mapping_notify((xcb_mapping_notify_event_t *)event);
1475 handle_focus_in((xcb_focus_in_event_t *)event);
1478 case XCB_PROPERTY_NOTIFY: {
1479 xcb_property_notify_event_t *e = (xcb_property_notify_event_t *)event;
1480 last_timestamp = e->time;
1481 property_notify(e->state, e->window, e->atom);
1486 //DLOG("Unhandled event of type %d\n", type);