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 tree_close_internal(con, DONT_KILL_WINDOW, false, false);
510 /* If the client (as opposed to i3) destroyed or unmapped a window, an
511 * EnterNotify event will follow (indistinguishable from an EnterNotify
512 * event caused by moving your mouse), causing i3 to set focus to whichever
513 * window is now visible.
515 * In a complex stacked or tabbed layout (take two v-split containers in a
516 * tabbed container), when the bottom window in tab2 is closed, the bottom
517 * window of tab1 is visible instead. X11 will thus send an EnterNotify
518 * event for the bottom window of tab1, while the focus should be set to
519 * the remaining window of tab2.
521 * Therefore, we ignore all EnterNotify events which have the same sequence
522 * as an UnmapNotify event. */
523 add_ignore_event(event->sequence, XCB_ENTER_NOTIFY);
525 /* Since we just ignored the sequence of this UnmapNotify, we want to make
526 * sure that following events use a different sequence. When putting xterm
527 * into fullscreen and moving the pointer to a different window, without
528 * using GetInputFocus, subsequent (legitimate) EnterNotify events arrived
529 * with the same sequence and thus were ignored (see ticket #609). */
530 free(xcb_get_input_focus_reply(conn, cookie, NULL));
534 * A destroy notify event is sent when the window is not unmapped, but
535 * immediately destroyed (for example when starting a window and immediately
536 * killing the program which started it).
538 * We just pass on the event to the unmap notify handler (by copying the
539 * important fields in the event data structure).
542 static void handle_destroy_notify_event(xcb_destroy_notify_event_t *event) {
543 DLOG("destroy notify for 0x%08x, 0x%08x\n", event->event, event->window);
545 xcb_unmap_notify_event_t unmap;
546 unmap.sequence = event->sequence;
547 unmap.event = event->event;
548 unmap.window = event->window;
550 handle_unmap_notify_event(&unmap);
553 static bool window_name_changed(i3Window *window, char *old_name) {
554 if ((old_name == NULL) && (window->name == NULL))
557 /* Either the old or the new one is NULL, but not both. */
558 if ((old_name == NULL) ^ (window->name == NULL))
561 return (strcmp(old_name, i3string_as_utf8(window->name)) != 0);
565 * Called when a window changes its title
568 static bool handle_windowname_change(void *data, xcb_connection_t *conn, uint8_t state,
569 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
571 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
574 char *old_name = (con->window->name != NULL ? sstrdup(i3string_as_utf8(con->window->name)) : NULL);
576 window_update_name(con->window, prop, false);
578 x_push_changes(croot);
580 if (window_name_changed(con->window, old_name))
581 ipc_send_window_event("title", con);
589 * Handles legacy window name updates (WM_NAME), see also src/window.c,
590 * window_update_name_legacy().
593 static bool handle_windowname_change_legacy(void *data, xcb_connection_t *conn, uint8_t state,
594 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
596 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
599 char *old_name = (con->window->name != NULL ? sstrdup(i3string_as_utf8(con->window->name)) : NULL);
601 window_update_name_legacy(con->window, prop, false);
603 x_push_changes(croot);
605 if (window_name_changed(con->window, old_name))
606 ipc_send_window_event("title", con);
614 * Called when a window changes its WM_WINDOW_ROLE.
617 static bool handle_windowrole_change(void *data, xcb_connection_t *conn, uint8_t state,
618 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
620 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
623 window_update_role(con->window, prop, false);
630 * Updates the client’s WM_CLASS property
633 static int handle_windowclass_change(void *data, xcb_connection_t *conn, uint8_t state,
634 xcb_window_t window, xcb_atom_t atom, xcb_get_property_reply_t *prop) {
636 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
639 window_update_class(con->window, prop, false);
646 * Expose event means we should redraw our windows (= title bar)
649 static void handle_expose_event(xcb_expose_event_t *event) {
652 DLOG("window = %08x\n", event->window);
654 if ((parent = con_by_frame_id(event->window)) == NULL) {
655 LOG("expose event for unknown window, ignoring\n");
659 /* Since we render to our surface on every change anyways, expose events
660 * only tell us that the X server lost (parts of) the window contents. We
661 * can handle that by copying the appropriate part from our surface to the
663 draw_util_copy_surface(conn, &(parent->frame_buffer), &(parent->frame),
664 event->x, event->y, event->x, event->y,
665 event->width, event->height);
670 #define _NET_WM_MOVERESIZE_SIZE_TOPLEFT 0
671 #define _NET_WM_MOVERESIZE_SIZE_TOP 1
672 #define _NET_WM_MOVERESIZE_SIZE_TOPRIGHT 2
673 #define _NET_WM_MOVERESIZE_SIZE_RIGHT 3
674 #define _NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT 4
675 #define _NET_WM_MOVERESIZE_SIZE_BOTTOM 5
676 #define _NET_WM_MOVERESIZE_SIZE_BOTTOMLEFT 6
677 #define _NET_WM_MOVERESIZE_SIZE_LEFT 7
678 #define _NET_WM_MOVERESIZE_MOVE 8 /* movement only */
679 #define _NET_WM_MOVERESIZE_SIZE_KEYBOARD 9 /* size via keyboard */
680 #define _NET_WM_MOVERESIZE_MOVE_KEYBOARD 10 /* move via keyboard */
681 #define _NET_WM_MOVERESIZE_CANCEL 11 /* cancel operation */
684 * Handle client messages (EWMH)
687 static void handle_client_message(xcb_client_message_event_t *event) {
688 /* If this is a startup notification ClientMessage, the library will handle
689 * it and call our monitor_event() callback. */
690 if (sn_xcb_display_process_event(sndisplay, (xcb_generic_event_t *)event))
693 LOG("ClientMessage for window 0x%08x\n", event->window);
694 if (event->type == A__NET_WM_STATE) {
695 if (event->format != 32 ||
696 (event->data.data32[1] != A__NET_WM_STATE_FULLSCREEN &&
697 event->data.data32[1] != A__NET_WM_STATE_DEMANDS_ATTENTION &&
698 event->data.data32[1] != A__NET_WM_STATE_STICKY)) {
699 DLOG("Unknown atom in clientmessage of type %d\n", event->data.data32[1]);
703 Con *con = con_by_window_id(event->window);
705 DLOG("Could not get window for client message\n");
709 if (event->data.data32[1] == A__NET_WM_STATE_FULLSCREEN) {
710 /* Check if the fullscreen state should be toggled */
711 if ((con->fullscreen_mode != CF_NONE &&
712 (event->data.data32[0] == _NET_WM_STATE_REMOVE ||
713 event->data.data32[0] == _NET_WM_STATE_TOGGLE)) ||
714 (con->fullscreen_mode == CF_NONE &&
715 (event->data.data32[0] == _NET_WM_STATE_ADD ||
716 event->data.data32[0] == _NET_WM_STATE_TOGGLE))) {
717 DLOG("toggling fullscreen\n");
718 con_toggle_fullscreen(con, CF_OUTPUT);
720 } else if (event->data.data32[1] == A__NET_WM_STATE_DEMANDS_ATTENTION) {
721 /* Check if the urgent flag must be set or not */
722 if (event->data.data32[0] == _NET_WM_STATE_ADD)
723 con_set_urgency(con, true);
724 else if (event->data.data32[0] == _NET_WM_STATE_REMOVE)
725 con_set_urgency(con, false);
726 else if (event->data.data32[0] == _NET_WM_STATE_TOGGLE)
727 con_set_urgency(con, !con->urgent);
728 } else if (event->data.data32[1] == A__NET_WM_STATE_STICKY) {
729 DLOG("Received a client message to modify _NET_WM_STATE_STICKY.\n");
730 if (event->data.data32[0] == _NET_WM_STATE_ADD)
732 else if (event->data.data32[0] == _NET_WM_STATE_REMOVE)
734 else if (event->data.data32[0] == _NET_WM_STATE_TOGGLE)
735 con->sticky = !con->sticky;
737 DLOG("New sticky status for con = %p is %i.\n", con, con->sticky);
738 output_push_sticky_windows(focused);
742 } else if (event->type == A__NET_ACTIVE_WINDOW) {
743 if (event->format != 32)
746 DLOG("_NET_ACTIVE_WINDOW: Window 0x%08x should be activated\n", event->window);
748 Con *con = con_by_window_id(event->window);
750 DLOG("Could not get window for client message\n");
754 Con *ws = con_get_workspace(con);
757 DLOG("Window is not being managed, ignoring _NET_ACTIVE_WINDOW\n");
761 if (con_is_internal(ws)) {
762 DLOG("Workspace is internal, ignoring _NET_ACTIVE_WINDOW\n");
766 /* data32[0] indicates the source of the request (application or pager) */
767 if (event->data.data32[0] == 2) {
768 /* Always focus the con if it is from a pager, because this is most
769 * likely from some user action */
770 DLOG("This request came from a pager. Focusing con = %p\n", con);
774 /* Request is from an application. */
776 if (config.focus_on_window_activation == FOWA_FOCUS || (config.focus_on_window_activation == FOWA_SMART && workspace_is_visible(ws))) {
777 DLOG("Focusing con = %p\n", con);
780 } else if (config.focus_on_window_activation == FOWA_URGENT || (config.focus_on_window_activation == FOWA_SMART && !workspace_is_visible(ws))) {
781 DLOG("Marking con = %p urgent\n", con);
782 con_set_urgency(con, true);
784 DLOG("Ignoring request for con = %p.\n", con);
788 } else if (event->type == A_I3_SYNC) {
789 xcb_window_t window = event->data.data32[0];
790 uint32_t rnd = event->data.data32[1];
791 DLOG("[i3 sync protocol] Sending random value %d back to X11 window 0x%08x\n", rnd, window);
793 void *reply = scalloc(32, 1);
794 xcb_client_message_event_t *ev = reply;
796 ev->response_type = XCB_CLIENT_MESSAGE;
798 ev->type = A_I3_SYNC;
800 ev->data.data32[0] = window;
801 ev->data.data32[1] = rnd;
803 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
806 } else if (event->type == A__NET_REQUEST_FRAME_EXTENTS) {
808 * A client can request an estimate for the frame size which the window
809 * manager will put around it before actually mapping its window. Java
810 * does this (as of openjdk-7).
812 * Note that the calculation below is not entirely accurate — once you
813 * set a different border type, it’s off. We _could_ request all the
814 * window properties (which have to be set up at this point according
815 * to EWMH), but that seems rather elaborate. The standard explicitly
816 * says the application must cope with an estimate that is not entirely
819 DLOG("_NET_REQUEST_FRAME_EXTENTS for window 0x%08x\n", event->window);
821 /* The reply data: approximate frame size */
823 config.default_border_width, /* left */
824 config.default_border_width, /* right */
825 config.font.height + 5, /* top */
826 config.default_border_width /* bottom */
830 XCB_PROP_MODE_REPLACE,
832 A__NET_FRAME_EXTENTS,
833 XCB_ATOM_CARDINAL, 32, 4,
836 } else if (event->type == A__NET_CURRENT_DESKTOP) {
837 /* This request is used by pagers and bars to change the current
838 * desktop likely as a result of some user action. We interpret this as
839 * a request to focus the given workspace. See
840 * http://standards.freedesktop.org/wm-spec/latest/ar01s03.html#idm140251368135008
844 DLOG("Request to change current desktop to index %d\n", event->data.data32[0]);
846 TAILQ_FOREACH(output, &(croot->nodes_head), nodes) {
848 TAILQ_FOREACH(ws, &(output_get_content(output)->nodes_head), nodes) {
849 if (STARTS_WITH(ws->name, "__"))
852 if (idx == event->data.data32[0]) {
853 /* data32[1] is a timestamp used to prevent focus race conditions */
854 if (event->data.data32[1])
855 last_timestamp = event->data.data32[1];
857 DLOG("Handling request to focus workspace %s\n", ws->name);
868 } else if (event->type == A__NET_CLOSE_WINDOW) {
870 * Pagers wanting to close a window MUST send a _NET_CLOSE_WINDOW
871 * client message request to the root window.
872 * http://standards.freedesktop.org/wm-spec/wm-spec-latest.html#idm140200472668896
874 Con *con = con_by_window_id(event->window);
876 DLOG("Handling _NET_CLOSE_WINDOW request (con = %p)\n", con);
878 if (event->data.data32[0])
879 last_timestamp = event->data.data32[0];
881 tree_close_internal(con, KILL_WINDOW, false, false);
884 DLOG("Couldn't find con for _NET_CLOSE_WINDOW request. (window = %d)\n", event->window);
886 } else if (event->type == A__NET_WM_MOVERESIZE) {
888 * Client-side decorated Gtk3 windows emit this signal when being
889 * dragged by their GtkHeaderBar
891 Con *con = con_by_window_id(event->window);
892 if (!con || !con_is_floating(con)) {
893 DLOG("Couldn't find con for _NET_WM_MOVERESIZE request, or con not floating (window = %d)\n", event->window);
896 DLOG("Handling _NET_WM_MOVERESIZE request (con = %p)\n", con);
897 uint32_t direction = event->data.data32[2];
898 uint32_t x_root = event->data.data32[0];
899 uint32_t y_root = event->data.data32[1];
900 /* construct fake xcb_button_press_event_t */
901 xcb_button_press_event_t fake = {
904 .event_x = x_root - (con->rect.x),
905 .event_y = y_root - (con->rect.y)};
907 case _NET_WM_MOVERESIZE_MOVE:
908 floating_drag_window(con->parent, &fake);
910 case _NET_WM_MOVERESIZE_SIZE_TOPLEFT... _NET_WM_MOVERESIZE_SIZE_LEFT:
911 floating_resize_window(con->parent, false, &fake);
914 DLOG("_NET_WM_MOVERESIZE direction %d not implemented\n", direction);
918 DLOG("unhandled clientmessage\n");
923 bool handle_window_type(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
924 xcb_atom_t atom, xcb_get_property_reply_t *reply) {
926 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
929 window_update_type(con->window, reply);
934 * Handles the size hints set by a window, but currently only the part necessary for displaying
935 * clients proportionally inside their frames (mplayer for example)
937 * See ICCCM 4.1.2.3 for more details
940 static bool handle_normal_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
941 xcb_atom_t name, xcb_get_property_reply_t *reply) {
942 Con *con = con_by_window_id(window);
944 DLOG("Received WM_NORMAL_HINTS for unknown client\n");
948 xcb_size_hints_t size_hints;
950 //CLIENT_LOG(client);
952 /* If the hints were already in this event, use them, if not, request them */
954 xcb_icccm_get_wm_size_hints_from_reply(&size_hints, reply);
956 xcb_icccm_get_wm_normal_hints_reply(conn, xcb_icccm_get_wm_normal_hints_unchecked(conn, con->window->id), &size_hints, NULL);
958 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE)) {
959 // TODO: Minimum size is not yet implemented
960 DLOG("Minimum size: %d (width) x %d (height)\n", size_hints.min_width, size_hints.min_height);
963 bool changed = false;
964 if ((size_hints.flags & XCB_ICCCM_SIZE_HINT_P_RESIZE_INC)) {
965 if (size_hints.width_inc > 0 && size_hints.width_inc < 0xFFFF)
966 if (con->window->width_increment != size_hints.width_inc) {
967 con->window->width_increment = size_hints.width_inc;
970 if (size_hints.height_inc > 0 && size_hints.height_inc < 0xFFFF)
971 if (con->window->height_increment != size_hints.height_inc) {
972 con->window->height_increment = size_hints.height_inc;
977 DLOG("resize increments changed\n");
980 int base_width = 0, base_height = 0;
982 /* base_width/height are the desired size of the window.
983 We check if either the program-specified size or the program-specified
984 min-size is available */
985 if (size_hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE) {
986 base_width = size_hints.base_width;
987 base_height = size_hints.base_height;
988 } else if (size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) {
989 /* TODO: is this right? icccm says not */
990 base_width = size_hints.min_width;
991 base_height = size_hints.min_height;
994 if (base_width != con->window->base_width ||
995 base_height != con->window->base_height) {
996 con->window->base_width = base_width;
997 con->window->base_height = base_height;
998 DLOG("client's base_height changed to %d\n", base_height);
999 DLOG("client's base_width changed to %d\n", base_width);
1003 /* If no aspect ratio was set or if it was invalid, we ignore the hints */
1004 if (!(size_hints.flags & XCB_ICCCM_SIZE_HINT_P_ASPECT) ||
1005 (size_hints.min_aspect_num <= 0) ||
1006 (size_hints.min_aspect_den <= 0)) {
1007 goto render_and_return;
1010 /* XXX: do we really use rect here, not window_rect? */
1011 double width = con->rect.width - base_width;
1012 double height = con->rect.height - base_height;
1013 /* Convert numerator/denominator to a double */
1014 double min_aspect = (double)size_hints.min_aspect_num / size_hints.min_aspect_den;
1015 double max_aspect = (double)size_hints.max_aspect_num / size_hints.min_aspect_den;
1017 DLOG("Aspect ratio set: minimum %f, maximum %f\n", min_aspect, max_aspect);
1018 DLOG("width = %f, height = %f\n", width, height);
1020 /* Sanity checks, this is user-input, in a way */
1021 if (max_aspect <= 0 || min_aspect <= 0 || height == 0 || (width / height) <= 0)
1022 goto render_and_return;
1024 /* Check if we need to set proportional_* variables using the correct ratio */
1025 double aspect_ratio = 0.0;
1026 if ((width / height) < min_aspect) {
1027 aspect_ratio = min_aspect;
1028 } else if ((width / height) > max_aspect) {
1029 aspect_ratio = max_aspect;
1031 goto render_and_return;
1033 if (fabs(con->window->aspect_ratio - aspect_ratio) > DBL_EPSILON) {
1034 con->window->aspect_ratio = aspect_ratio;
1046 * Handles the WM_HINTS property for extracting the urgency state of the window.
1049 static bool handle_hints(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1050 xcb_atom_t name, xcb_get_property_reply_t *reply) {
1051 Con *con = con_by_window_id(window);
1053 DLOG("Received WM_HINTS for unknown client\n");
1059 reply = xcb_get_property_reply(conn, xcb_icccm_get_wm_hints(conn, window), NULL);
1060 window_update_hints(con->window, reply, &urgency_hint);
1061 con_set_urgency(con, urgency_hint);
1068 * Handles the transient for hints set by a window, signalizing that this window is a popup window
1069 * for some other window.
1071 * See ICCCM 4.1.2.6 for more details
1074 static bool handle_transient_for(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1075 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1078 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) {
1079 DLOG("No such window\n");
1084 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1085 false, window, XCB_ATOM_WM_TRANSIENT_FOR, XCB_ATOM_WINDOW, 0, 32),
1091 window_update_transient_for(con->window, prop);
1097 * Handles changes of the WM_CLIENT_LEADER atom which specifies if this is a
1098 * toolwindow (or similar) and to which window it belongs (logical parent).
1101 static bool handle_clientleader_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1102 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1104 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
1108 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1109 false, window, A_WM_CLIENT_LEADER, XCB_ATOM_WINDOW, 0, 32),
1115 window_update_leader(con->window, prop);
1121 * Handles FocusIn events which are generated by clients (i3’s focus changes
1122 * don’t generate FocusIn events due to a different EventMask) and updates the
1123 * decorations accordingly.
1126 static void handle_focus_in(xcb_focus_in_event_t *event) {
1127 DLOG("focus change in, for window 0x%08x\n", event->event);
1129 if ((con = con_by_window_id(event->event)) == NULL || con->window == NULL)
1131 DLOG("That is con %p / %s\n", con, con->name);
1133 if (event->mode == XCB_NOTIFY_MODE_GRAB ||
1134 event->mode == XCB_NOTIFY_MODE_UNGRAB) {
1135 DLOG("FocusIn event for grab/ungrab, ignoring\n");
1139 if (event->detail == XCB_NOTIFY_DETAIL_POINTER) {
1140 DLOG("notify detail is pointer, ignoring this event\n");
1144 if (focused_id == event->event) {
1145 DLOG("focus matches the currently focused window, not doing anything\n");
1149 /* Skip dock clients, they cannot get the i3 focus. */
1150 if (con->parent->type == CT_DOCKAREA) {
1151 DLOG("This is a dock client, not focusing.\n");
1155 DLOG("focus is different, updating decorations\n");
1157 /* Get the currently focused workspace to check if the focus change also
1158 * involves changing workspaces. If so, we need to call workspace_show() to
1159 * correctly update state and send the IPC event. */
1160 Con *ws = con_get_workspace(con);
1161 if (ws != con_get_workspace(focused))
1165 /* We update focused_id because we don’t need to set focus again */
1166 focused_id = event->event;
1167 x_push_changes(croot);
1172 * Handles the WM_CLASS property for assignments and criteria selection.
1175 static bool handle_class_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1176 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1178 if ((con = con_by_window_id(window)) == NULL || con->window == NULL)
1182 prop = xcb_get_property_reply(conn, xcb_get_property_unchecked(conn,
1183 false, window, XCB_ATOM_WM_CLASS, XCB_ATOM_STRING, 0, 32),
1190 window_update_class(con->window, prop, false);
1196 * Handles the _NET_WM_STRUT_PARTIAL property for allocating space for dock clients.
1199 static bool handle_strut_partial_change(void *data, xcb_connection_t *conn, uint8_t state, xcb_window_t window,
1200 xcb_atom_t name, xcb_get_property_reply_t *prop) {
1201 DLOG("strut partial change for window 0x%08x\n", window);
1204 if ((con = con_by_window_id(window)) == NULL || con->window == NULL) {
1209 xcb_generic_error_t *err = NULL;
1210 xcb_get_property_cookie_t strut_cookie = xcb_get_property(conn, false, window, A__NET_WM_STRUT_PARTIAL,
1211 XCB_GET_PROPERTY_TYPE_ANY, 0, UINT32_MAX);
1212 prop = xcb_get_property_reply(conn, strut_cookie, &err);
1215 DLOG("got error when getting strut partial property: %d\n", err->error_code);
1225 DLOG("That is con %p / %s\n", con, con->name);
1227 window_update_strut_partial(con->window, prop);
1229 /* we only handle this change for dock clients */
1230 if (con->parent == NULL || con->parent->type != CT_DOCKAREA) {
1234 Con *search_at = croot;
1235 Con *output = con_get_output(con);
1236 if (output != NULL) {
1237 DLOG("Starting search at output %s\n", output->name);
1241 /* find out the desired position of this dock window */
1242 if (con->window->reserved.top > 0 && con->window->reserved.bottom == 0) {
1243 DLOG("Top dock client\n");
1244 con->window->dock = W_DOCK_TOP;
1245 } else if (con->window->reserved.top == 0 && con->window->reserved.bottom > 0) {
1246 DLOG("Bottom dock client\n");
1247 con->window->dock = W_DOCK_BOTTOM;
1249 DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
1250 if (con->geometry.y < (search_at->rect.height / 2)) {
1251 DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
1252 con->geometry.y, (search_at->rect.height / 2));
1253 con->window->dock = W_DOCK_TOP;
1255 DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
1256 con->geometry.y, (search_at->rect.height / 2));
1257 con->window->dock = W_DOCK_BOTTOM;
1261 /* find the dockarea */
1262 Con *dockarea = con_for_window(search_at, con->window, NULL);
1263 assert(dockarea != NULL);
1265 /* attach the dock to the dock area */
1267 con->parent = dockarea;
1268 TAILQ_INSERT_HEAD(&(dockarea->focus_head), con, focused);
1269 TAILQ_INSERT_HEAD(&(dockarea->nodes_head), con, nodes);
1276 /* Returns false if the event could not be processed (e.g. the window could not
1277 * be found), true otherwise */
1278 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);
1280 struct property_handler_t {
1283 cb_property_handler_t cb;
1286 static struct property_handler_t property_handlers[] = {
1287 {0, 128, handle_windowname_change},
1288 {0, UINT_MAX, handle_hints},
1289 {0, 128, handle_windowname_change_legacy},
1290 {0, UINT_MAX, handle_normal_hints},
1291 {0, UINT_MAX, handle_clientleader_change},
1292 {0, UINT_MAX, handle_transient_for},
1293 {0, 128, handle_windowrole_change},
1294 {0, 128, handle_class_change},
1295 {0, UINT_MAX, handle_strut_partial_change},
1296 {0, UINT_MAX, handle_window_type}};
1297 #define NUM_HANDLERS (sizeof(property_handlers) / sizeof(struct property_handler_t))
1300 * Sets the appropriate atoms for the property handlers after the atoms were
1304 void property_handlers_init(void) {
1305 sn_monitor_context_new(sndisplay, conn_screen, startup_monitor_event, NULL, NULL);
1307 property_handlers[0].atom = A__NET_WM_NAME;
1308 property_handlers[1].atom = XCB_ATOM_WM_HINTS;
1309 property_handlers[2].atom = XCB_ATOM_WM_NAME;
1310 property_handlers[3].atom = XCB_ATOM_WM_NORMAL_HINTS;
1311 property_handlers[4].atom = A_WM_CLIENT_LEADER;
1312 property_handlers[5].atom = XCB_ATOM_WM_TRANSIENT_FOR;
1313 property_handlers[6].atom = A_WM_WINDOW_ROLE;
1314 property_handlers[7].atom = XCB_ATOM_WM_CLASS;
1315 property_handlers[8].atom = A__NET_WM_STRUT_PARTIAL;
1316 property_handlers[9].atom = A__NET_WM_WINDOW_TYPE;
1319 static void property_notify(uint8_t state, xcb_window_t window, xcb_atom_t atom) {
1320 struct property_handler_t *handler = NULL;
1321 xcb_get_property_reply_t *propr = NULL;
1323 for (size_t c = 0; c < sizeof(property_handlers) / sizeof(struct property_handler_t); c++) {
1324 if (property_handlers[c].atom != atom)
1327 handler = &property_handlers[c];
1331 if (handler == NULL) {
1332 //DLOG("Unhandled property notify for atom %d (0x%08x)\n", atom, atom);
1336 if (state != XCB_PROPERTY_DELETE) {
1337 xcb_get_property_cookie_t cookie = xcb_get_property(conn, 0, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, handler->long_len);
1338 propr = xcb_get_property_reply(conn, cookie, 0);
1341 /* the handler will free() the reply unless it returns false */
1342 if (!handler->cb(NULL, conn, state, window, atom, propr))
1347 * Takes an xcb_generic_event_t and calls the appropriate handler, based on the
1351 void handle_event(int type, xcb_generic_event_t *event) {
1352 if (type != XCB_MOTION_NOTIFY)
1353 DLOG("event type %d, xkb_base %d\n", type, xkb_base);
1355 if (randr_base > -1 &&
1356 type == randr_base + XCB_RANDR_SCREEN_CHANGE_NOTIFY) {
1357 handle_screen_change(event);
1361 if (xkb_base > -1 && type == xkb_base) {
1362 DLOG("xkb event, need to handle it.\n");
1364 xcb_xkb_state_notify_event_t *state = (xcb_xkb_state_notify_event_t *)event;
1365 if (state->xkbType == XCB_XKB_NEW_KEYBOARD_NOTIFY) {
1366 DLOG("xkb new keyboard notify, sequence %d, time %d\n", state->sequence, state->time);
1367 xcb_key_symbols_free(keysyms);
1368 keysyms = xcb_key_symbols_alloc(conn);
1369 if (((xcb_xkb_new_keyboard_notify_event_t *)event)->changed & XCB_XKB_NKN_DETAIL_KEYCODES)
1370 (void)load_keymap();
1371 ungrab_all_keys(conn);
1372 translate_keysyms();
1373 grab_all_keys(conn);
1374 } else if (state->xkbType == XCB_XKB_MAP_NOTIFY) {
1375 if (event_is_ignored(event->sequence, type)) {
1376 DLOG("Ignoring map notify event for sequence %d.\n", state->sequence);
1378 DLOG("xkb map notify, sequence %d, time %d\n", state->sequence, state->time);
1379 add_ignore_event(event->sequence, type);
1380 xcb_key_symbols_free(keysyms);
1381 keysyms = xcb_key_symbols_alloc(conn);
1382 ungrab_all_keys(conn);
1383 translate_keysyms();
1384 grab_all_keys(conn);
1385 (void)load_keymap();
1387 } else if (state->xkbType == XCB_XKB_STATE_NOTIFY) {
1388 DLOG("xkb state group = %d\n", state->group);
1389 if (xkb_current_group == state->group)
1391 xkb_current_group = state->group;
1392 ungrab_all_keys(conn);
1393 grab_all_keys(conn);
1401 case XCB_KEY_RELEASE:
1402 handle_key_press((xcb_key_press_event_t *)event);
1405 case XCB_BUTTON_PRESS:
1406 case XCB_BUTTON_RELEASE:
1407 handle_button_press((xcb_button_press_event_t *)event);
1410 case XCB_MAP_REQUEST:
1411 handle_map_request((xcb_map_request_event_t *)event);
1414 case XCB_UNMAP_NOTIFY:
1415 handle_unmap_notify_event((xcb_unmap_notify_event_t *)event);
1418 case XCB_DESTROY_NOTIFY:
1419 handle_destroy_notify_event((xcb_destroy_notify_event_t *)event);
1423 handle_expose_event((xcb_expose_event_t *)event);
1426 case XCB_MOTION_NOTIFY:
1427 handle_motion_notify((xcb_motion_notify_event_t *)event);
1430 /* Enter window = user moved their mouse over the window */
1431 case XCB_ENTER_NOTIFY:
1432 handle_enter_notify((xcb_enter_notify_event_t *)event);
1435 /* Client message are sent to the root window. The only interesting
1436 * client message for us is _NET_WM_STATE, we honour
1437 * _NET_WM_STATE_FULLSCREEN and _NET_WM_STATE_DEMANDS_ATTENTION */
1438 case XCB_CLIENT_MESSAGE:
1439 handle_client_message((xcb_client_message_event_t *)event);
1442 /* Configure request = window tried to change size on its own */
1443 case XCB_CONFIGURE_REQUEST:
1444 handle_configure_request((xcb_configure_request_event_t *)event);
1447 /* Mapping notify = keyboard mapping changed (Xmodmap), re-grab bindings */
1448 case XCB_MAPPING_NOTIFY:
1449 handle_mapping_notify((xcb_mapping_notify_event_t *)event);
1453 handle_focus_in((xcb_focus_in_event_t *)event);
1456 case XCB_PROPERTY_NOTIFY: {
1457 xcb_property_notify_event_t *e = (xcb_property_notify_event_t *)event;
1458 last_timestamp = e->time;
1459 property_notify(e->state, e->window, e->atom);
1464 //DLOG("Unhandled event of type %d\n", type);