2 #define I3__FILE__ "con.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 * con.c: Functions which deal with containers directly (creating containers,
10 * searching containers, getting specific properties from containers,
15 #include "yajl_utils.h"
17 static void con_on_remove_child(Con *con);
20 * force parent split containers to be redrawn
23 void con_force_split_parents_redraw(Con *con) {
26 while (parent && parent->type != CT_WORKSPACE && parent->type != CT_DOCKAREA) {
27 if (!con_is_leaf(parent))
28 FREE(parent->deco_render_params);
29 parent = parent->parent;
34 * Create a new container (and attach it to the given parent, if not NULL).
35 * This function only initializes the data structures.
38 Con *con_new_skeleton(Con *parent, i3Window *window) {
39 Con *new = scalloc(1, sizeof(Con));
40 new->on_remove_child = con_on_remove_child;
41 TAILQ_INSERT_TAIL(&all_cons, new, all_cons);
44 new->border_style = config.default_border;
45 new->current_border_width = -1;
47 new->depth = window->depth;
48 new->window->aspect_ratio = 0.0;
50 new->depth = XCB_COPY_FROM_PARENT;
52 DLOG("opening window\n");
54 TAILQ_INIT(&(new->floating_head));
55 TAILQ_INIT(&(new->nodes_head));
56 TAILQ_INIT(&(new->focus_head));
57 TAILQ_INIT(&(new->swallow_head));
60 con_attach(new, parent, false);
65 /* A wrapper for con_new_skeleton, to retain the old con_new behaviour
68 Con *con_new(Con *parent, i3Window *window) {
69 Con *new = con_new_skeleton(parent, window);
70 x_con_init(new, new->depth);
74 static void _con_attach(Con *con, Con *parent, Con *previous, bool ignore_focus) {
77 Con *current = previous;
78 struct nodes_head *nodes_head = &(parent->nodes_head);
79 struct focus_head *focus_head = &(parent->focus_head);
81 /* Workspaces are handled differently: they need to be inserted at the
83 if (con->type == CT_WORKSPACE) {
84 DLOG("it's a workspace. num = %d\n", con->num);
85 if (con->num == -1 || TAILQ_EMPTY(nodes_head)) {
86 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
88 current = TAILQ_FIRST(nodes_head);
89 if (con->num < current->num) {
90 /* we need to insert the container at the beginning */
91 TAILQ_INSERT_HEAD(nodes_head, con, nodes);
93 while (current->num != -1 && con->num > current->num) {
94 current = TAILQ_NEXT(current, nodes);
95 if (current == TAILQ_END(nodes_head)) {
100 /* we need to insert con after current, if current is not NULL */
102 TAILQ_INSERT_BEFORE(current, con, nodes);
104 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
107 goto add_to_focus_head;
110 if (con->type == CT_FLOATING_CON) {
111 DLOG("Inserting into floating containers\n");
112 TAILQ_INSERT_TAIL(&(parent->floating_head), con, floating_windows);
115 /* Get the first tiling container in focus stack */
116 TAILQ_FOREACH(loop, &(parent->focus_head), focused) {
117 if (loop->type == CT_FLOATING_CON)
124 /* When the container is not a split container (but contains a window)
125 * and is attached to a workspace, we check if the user configured a
126 * workspace_layout. This is done in workspace_attach_to, which will
127 * provide us with the container to which we should attach (either the
128 * workspace or a new split container with the configured
131 if (con->window != NULL &&
132 parent->type == CT_WORKSPACE &&
133 parent->workspace_layout != L_DEFAULT) {
134 DLOG("Parent is a workspace. Applying default layout...\n");
135 Con *target = workspace_attach_to(parent);
137 /* Attach the original con to this new split con instead */
138 nodes_head = &(target->nodes_head);
139 focus_head = &(target->focus_head);
140 con->parent = target;
146 /* Insert the container after the tiling container, if found.
147 * When adding to a CT_OUTPUT, just append one after another. */
148 if (current && parent->type != CT_OUTPUT) {
149 DLOG("Inserting con = %p after con %p\n", con, current);
150 TAILQ_INSERT_AFTER(nodes_head, current, con, nodes);
152 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
156 /* We insert to the TAIL because con_focus() will correct this.
157 * This way, we have the option to insert Cons without having
159 TAILQ_INSERT_TAIL(focus_head, con, focused);
160 con_force_split_parents_redraw(con);
164 * Attaches the given container to the given parent. This happens when moving
165 * a container or when inserting a new container at a specific place in the
168 * ignore_focus is to just insert the Con at the end (useful when creating a
169 * new split container *around* some containers, that is, detaching and
170 * attaching them in order without wanting to mess with the focus in between).
173 void con_attach(Con *con, Con *parent, bool ignore_focus) {
174 _con_attach(con, parent, NULL, ignore_focus);
178 * Detaches the given container from its current parent
181 void con_detach(Con *con) {
182 con_force_split_parents_redraw(con);
183 if (con->type == CT_FLOATING_CON) {
184 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
185 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
187 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
188 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
193 * Sets input focus to the given container. Will be updated in X11 in the next
194 * run of x_push_changes().
197 void con_focus(Con *con) {
199 DLOG("con_focus = %p\n", con);
201 /* 1: set focused-pointer to the new con */
202 /* 2: exchange the position of the container in focus stack of the parent all the way up */
203 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
204 TAILQ_INSERT_HEAD(&(con->parent->focus_head), con, focused);
205 if (con->parent->parent != NULL)
206 con_focus(con->parent);
209 /* We can't blindly reset non-leaf containers since they might have
210 * other urgent children. Therefore we only reset leafs and propagate
211 * the changes upwards via con_update_parents_urgency() which does proper
212 * checks before resetting the urgency.
214 if (con->urgent && con_is_leaf(con)) {
215 con_set_urgency(con, false);
216 con_update_parents_urgency(con);
217 workspace_update_urgent_flag(con_get_workspace(con));
218 ipc_send_window_event("urgent", con);
223 * Returns true when this node is a leaf node (has no children)
226 bool con_is_leaf(Con *con) {
227 return TAILQ_EMPTY(&(con->nodes_head));
231 * Returns true when this con is a leaf node with a managed X11 window (e.g.,
232 * excluding dock containers)
234 bool con_has_managed_window(Con *con) {
235 return (con != NULL && con->window != NULL && con->window->id != XCB_WINDOW_NONE && con_get_workspace(con) != NULL);
239 * Returns true if this node has regular or floating children.
242 bool con_has_children(Con *con) {
243 return (!con_is_leaf(con) || !TAILQ_EMPTY(&(con->floating_head)));
247 * Returns true if a container should be considered split.
250 bool con_is_split(Con *con) {
251 if (con_is_leaf(con))
254 switch (con->layout) {
265 * This will only return true for containers which have some parent with
266 * a tabbed / stacked parent of which they are not the currently focused child.
269 bool con_is_hidden(Con *con) {
272 /* ascend to the workspace level and memorize the highest-up container
273 * which is stacked or tabbed. */
274 while (current != NULL && current->type != CT_WORKSPACE) {
275 Con *parent = current->parent;
276 if (parent != NULL && (parent->layout == L_TABBED || parent->layout == L_STACKED)) {
277 if (TAILQ_FIRST(&(parent->focus_head)) != current)
288 * Returns whether the container or any of its children is sticky.
291 bool con_is_sticky(Con *con) {
296 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
297 if (con_is_sticky(child))
305 * Returns true if this node accepts a window (if the node swallows windows,
306 * it might already have swallowed enough and cannot hold any more).
309 bool con_accepts_window(Con *con) {
310 /* 1: workspaces never accept direct windows */
311 if (con->type == CT_WORKSPACE)
314 if (con_is_split(con)) {
315 DLOG("container %p does not accept windows, it is a split container.\n", con);
319 /* TODO: if this is a swallowing container, we need to check its max_clients */
320 return (con->window == NULL);
324 * Gets the output container (first container with CT_OUTPUT in hierarchy) this
328 Con *con_get_output(Con *con) {
330 while (result != NULL && result->type != CT_OUTPUT)
331 result = result->parent;
332 /* We must be able to get an output because focus can never be set higher
333 * in the tree (root node cannot be focused). */
334 assert(result != NULL);
339 * Gets the workspace container this node is on.
342 Con *con_get_workspace(Con *con) {
344 while (result != NULL && result->type != CT_WORKSPACE)
345 result = result->parent;
350 * Searches parenst of the given 'con' until it reaches one with the specified
351 * 'orientation'. Aborts when it comes across a floating_con.
354 Con *con_parent_with_orientation(Con *con, orientation_t orientation) {
355 DLOG("Searching for parent of Con %p with orientation %d\n", con, orientation);
356 Con *parent = con->parent;
357 if (parent->type == CT_FLOATING_CON)
359 while (con_orientation(parent) != orientation) {
360 DLOG("Need to go one level further up\n");
361 parent = parent->parent;
362 /* Abort when we reach a floating con, or an output con */
364 (parent->type == CT_FLOATING_CON ||
365 parent->type == CT_OUTPUT ||
366 (parent->parent && parent->parent->type == CT_OUTPUT)))
371 DLOG("Result: %p\n", parent);
376 * helper data structure for the breadth-first-search in
377 * con_get_fullscreen_con()
383 TAILQ_ENTRY(bfs_entry) entries;
387 * Returns the first fullscreen node below this node.
390 Con *con_get_fullscreen_con(Con *con, fullscreen_mode_t fullscreen_mode) {
391 Con *current, *child;
393 /* TODO: is breadth-first-search really appropriate? (check as soon as
394 * fullscreen levels and fullscreen for containers is implemented) */
395 TAILQ_HEAD(bfs_head, bfs_entry) bfs_head = TAILQ_HEAD_INITIALIZER(bfs_head);
396 struct bfs_entry *entry = smalloc(sizeof(struct bfs_entry));
398 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
400 while (!TAILQ_EMPTY(&bfs_head)) {
401 entry = TAILQ_FIRST(&bfs_head);
402 current = entry->con;
403 if (current != con && current->fullscreen_mode == fullscreen_mode) {
404 /* empty the queue */
405 while (!TAILQ_EMPTY(&bfs_head)) {
406 entry = TAILQ_FIRST(&bfs_head);
407 TAILQ_REMOVE(&bfs_head, entry, entries);
413 TAILQ_REMOVE(&bfs_head, entry, entries);
416 TAILQ_FOREACH(child, &(current->nodes_head), nodes) {
417 entry = smalloc(sizeof(struct bfs_entry));
419 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
422 TAILQ_FOREACH(child, &(current->floating_head), floating_windows) {
423 entry = smalloc(sizeof(struct bfs_entry));
425 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
433 * Returns true if the container is internal, such as __i3_scratch
436 bool con_is_internal(Con *con) {
437 return (con->name[0] == '_' && con->name[1] == '_');
441 * Returns true if the node is floating.
444 bool con_is_floating(Con *con) {
446 DLOG("checking if con %p is floating\n", con);
447 return (con->floating >= FLOATING_AUTO_ON);
451 * Checks if the given container is either floating or inside some floating
452 * container. It returns the FLOATING_CON container.
455 Con *con_inside_floating(Con *con) {
457 if (con->type == CT_FLOATING_CON)
460 if (con->floating >= FLOATING_AUTO_ON)
463 if (con->type == CT_WORKSPACE || con->type == CT_OUTPUT)
466 return con_inside_floating(con->parent);
470 * Checks if the given container is inside a focused container.
473 bool con_inside_focused(Con *con) {
478 return con_inside_focused(con->parent);
482 * Returns the container with the given client window ID or NULL if no such
486 Con *con_by_window_id(xcb_window_t window) {
488 TAILQ_FOREACH(con, &all_cons, all_cons)
489 if (con->window != NULL && con->window->id == window)
495 * Returns the container with the given frame ID or NULL if no such container
499 Con *con_by_frame_id(xcb_window_t frame) {
501 TAILQ_FOREACH(con, &all_cons, all_cons)
502 if (con->frame == frame)
508 * Returns the container with the given mark or NULL if no such container
512 Con *con_by_mark(const char *mark) {
514 TAILQ_FOREACH(con, &all_cons, all_cons) {
515 if (con->mark != NULL && strcmp(con->mark, mark) == 0)
523 * Returns the first container below 'con' which wants to swallow this window
527 Con *con_for_window(Con *con, i3Window *window, Match **store_match) {
530 //DLOG("searching con for window %p starting at con %p\n", window, con);
531 //DLOG("class == %s\n", window->class_class);
533 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
534 TAILQ_FOREACH(match, &(child->swallow_head), matches) {
535 if (!match_matches_window(match, window))
537 if (store_match != NULL)
538 *store_match = match;
541 Con *result = con_for_window(child, window, store_match);
546 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
547 TAILQ_FOREACH(match, &(child->swallow_head), matches) {
548 if (!match_matches_window(match, window))
550 if (store_match != NULL)
551 *store_match = match;
554 Con *result = con_for_window(child, window, store_match);
563 * Returns the number of children of this container.
566 int con_num_children(Con *con) {
570 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
577 * Updates the percent attribute of the children of the given container. This
578 * function needs to be called when a window is added or removed from a
582 void con_fix_percent(Con *con) {
584 int children = con_num_children(con);
586 // calculate how much we have distributed and how many containers
587 // with a percentage set we have
589 int children_with_percent = 0;
590 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
591 if (child->percent > 0.0) {
592 total += child->percent;
593 ++children_with_percent;
597 // if there were children without a percentage set, set to a value that
598 // will make those children proportional to all others
599 if (children_with_percent != children) {
600 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
601 if (child->percent <= 0.0) {
602 if (children_with_percent == 0)
603 total += (child->percent = 1.0);
605 total += (child->percent = total / children_with_percent);
610 // if we got a zero, just distribute the space equally, otherwise
611 // distribute according to the proportions we got
613 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
614 child->percent = 1.0 / children;
615 } else if (total != 1.0) {
616 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
617 child->percent /= total;
622 * Toggles fullscreen mode for the given container. If there already is a
623 * fullscreen container on this workspace, fullscreen will be disabled and then
624 * enabled for the container the user wants to have in fullscreen mode.
627 void con_toggle_fullscreen(Con *con, int fullscreen_mode) {
628 if (con->type == CT_WORKSPACE) {
629 DLOG("You cannot make a workspace fullscreen.\n");
633 DLOG("toggling fullscreen for %p / %s\n", con, con->name);
635 if (con->fullscreen_mode == CF_NONE)
636 con_enable_fullscreen(con, fullscreen_mode);
638 con_disable_fullscreen(con);
642 * Sets the specified fullscreen mode for the given container, sends the
643 * “fullscreen_mode” event and changes the XCB fullscreen property of the
644 * container’s window, if any.
647 static void con_set_fullscreen_mode(Con *con, fullscreen_mode_t fullscreen_mode) {
648 con->fullscreen_mode = fullscreen_mode;
650 DLOG("mode now: %d\n", con->fullscreen_mode);
652 /* Send an ipc window "fullscreen_mode" event */
653 ipc_send_window_event("fullscreen_mode", con);
655 /* update _NET_WM_STATE if this container has a window */
656 /* TODO: when a window is assigned to a container which is already
657 * fullscreened, this state needs to be pushed to the client, too */
658 if (con->window == NULL)
661 if (con->fullscreen_mode != CF_NONE) {
662 DLOG("Setting _NET_WM_STATE_FULLSCREEN for con = %p / window = %d.\n", con, con->window->id);
663 xcb_add_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_FULLSCREEN);
665 DLOG("Removing _NET_WM_STATE_FULLSCREEN for con = %p / window = %d.\n", con, con->window->id);
666 xcb_remove_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_FULLSCREEN);
671 * Enables fullscreen mode for the given container, if necessary.
673 * If the container’s mode is already CF_OUTPUT or CF_GLOBAL, the container is
674 * kept fullscreen but its mode is set to CF_GLOBAL and CF_OUTPUT,
677 * Other fullscreen containers will be disabled first, if they hide the new
681 void con_enable_fullscreen(Con *con, fullscreen_mode_t fullscreen_mode) {
682 if (con->type == CT_WORKSPACE) {
683 DLOG("You cannot make a workspace fullscreen.\n");
687 assert(fullscreen_mode == CF_GLOBAL || fullscreen_mode == CF_OUTPUT);
689 if (fullscreen_mode == CF_GLOBAL)
690 DLOG("enabling global fullscreen for %p / %s\n", con, con->name);
692 DLOG("enabling fullscreen for %p / %s\n", con, con->name);
694 if (con->fullscreen_mode == fullscreen_mode) {
695 DLOG("fullscreen already enabled for %p / %s\n", con, con->name);
699 Con *con_ws = con_get_workspace(con);
701 /* Disable any fullscreen container that would conflict the new one. */
702 Con *fullscreen = con_get_fullscreen_con(croot, CF_GLOBAL);
703 if (fullscreen == NULL)
704 fullscreen = con_get_fullscreen_con(con_ws, CF_OUTPUT);
705 if (fullscreen != NULL)
706 con_disable_fullscreen(fullscreen);
708 /* Set focus to new fullscreen container. Unless in global fullscreen mode
709 * and on another workspace restore focus afterwards.
710 * Switch to the container’s workspace if mode is global. */
711 Con *cur_ws = con_get_workspace(focused);
712 Con *old_focused = focused;
713 if (fullscreen_mode == CF_GLOBAL && cur_ws != con_ws)
714 workspace_show(con_ws);
716 if (fullscreen_mode != CF_GLOBAL && cur_ws != con_ws)
717 con_focus(old_focused);
719 con_set_fullscreen_mode(con, fullscreen_mode);
723 * Disables fullscreen mode for the given container regardless of the mode, if
727 void con_disable_fullscreen(Con *con) {
728 if (con->type == CT_WORKSPACE) {
729 DLOG("You cannot make a workspace fullscreen.\n");
733 DLOG("disabling fullscreen for %p / %s\n", con, con->name);
735 if (con->fullscreen_mode == CF_NONE) {
736 DLOG("fullscreen already disabled for %p / %s\n", con, con->name);
740 con_set_fullscreen_mode(con, CF_NONE);
743 static bool _con_move_to_con(Con *con, Con *target, bool behind_focused, bool fix_coordinates, bool dont_warp, bool ignore_focus) {
744 Con *orig_target = target;
746 /* Prevent moving if this would violate the fullscreen focus restrictions. */
747 Con *target_ws = con_get_workspace(target);
748 if (!con_fullscreen_permits_focusing(target_ws)) {
749 LOG("Cannot move out of a fullscreen container.\n");
753 if (con_is_floating(con)) {
754 DLOG("Container is floating, using parent instead.\n");
758 Con *source_ws = con_get_workspace(con);
760 if (con->type == CT_WORKSPACE) {
761 /* Re-parent all of the old workspace's floating windows. */
763 while (!TAILQ_EMPTY(&(source_ws->floating_head))) {
764 child = TAILQ_FIRST(&(source_ws->floating_head));
765 con_move_to_workspace(child, target_ws, true, true, false);
768 /* If there are no non-floating children, ignore the workspace. */
769 if (con_is_leaf(con))
772 con = workspace_encapsulate(con);
774 ELOG("Workspace failed to move its contents into a container!\n");
779 /* Save the urgency state so that we can restore it. */
780 bool urgent = con->urgent;
782 /* Save the current workspace. So we can call workspace_show() by the end
783 * of this function. */
784 Con *current_ws = con_get_workspace(focused);
786 Con *source_output = con_get_output(con),
787 *dest_output = con_get_output(target_ws);
789 /* 1: save the container which is going to be focused after the current
790 * container is moved away */
791 Con *focus_next = con_next_focused(con);
793 /* 2: we go up one level, but only when target is a normal container */
794 if (target->type != CT_WORKSPACE) {
795 DLOG("target originally = %p / %s / type %d\n", target, target->name, target->type);
796 target = target->parent;
799 /* 3: if the target container is floating, we get the workspace instead.
800 * Only tiling windows need to get inserted next to the current container.
802 Con *floatingcon = con_inside_floating(target);
803 if (floatingcon != NULL) {
804 DLOG("floatingcon, going up even further\n");
805 target = floatingcon->parent;
808 if (con->type == CT_FLOATING_CON) {
809 Con *ws = con_get_workspace(target);
810 DLOG("This is a floating window, using workspace %p / %s\n", ws, ws->name);
814 if (source_output != dest_output) {
815 /* Take the relative coordinates of the current output, then add them
816 * to the coordinate space of the correct output */
817 if (fix_coordinates && con->type == CT_FLOATING_CON) {
818 floating_fix_coordinates(con, &(source_output->rect), &(dest_output->rect));
820 DLOG("Not fixing coordinates, fix_coordinates flag = %d\n", fix_coordinates);
822 /* If moving to a visible workspace, call show so it can be considered
823 * focused. Must do before attaching because workspace_show checks to see
824 * if focused container is in its area. */
825 if (!ignore_focus && workspace_is_visible(target_ws)) {
826 workspace_show(target_ws);
828 /* Don’t warp if told so (when dragging floating windows with the
829 * mouse for example) */
833 x_set_warp_to(&(con->rect));
837 /* If moving a fullscreen container and the destination already has a
838 * fullscreen window on it, un-fullscreen the target's fullscreen con. */
839 Con *fullscreen = con_get_fullscreen_con(target_ws, CF_OUTPUT);
840 if (con->fullscreen_mode != CF_NONE && fullscreen != NULL) {
841 con_toggle_fullscreen(fullscreen, CF_OUTPUT);
845 DLOG("Re-attaching container to %p / %s\n", target, target->name);
846 /* 4: re-attach the con to the parent of this focused container */
847 Con *parent = con->parent;
849 _con_attach(con, target, behind_focused ? NULL : orig_target, !behind_focused);
851 /* 5: fix the percentages */
852 con_fix_percent(parent);
854 con_fix_percent(target);
856 /* 6: focus the con on the target workspace, but only within that
857 * workspace, that is, don’t move focus away if the target workspace is
859 * We don’t focus the con for i3 pseudo workspaces like __i3_scratch and
860 * we don’t focus when there is a fullscreen con on that workspace. We
861 * also don't do it if the caller requested to ignore focus. */
862 if (!ignore_focus && !con_is_internal(target_ws) && !fullscreen) {
863 /* We need to save the focused workspace on the output in case the
864 * new workspace is hidden and it's necessary to immediately switch
865 * back to the originally-focused workspace. */
866 Con *old_focus = TAILQ_FIRST(&(output_get_content(dest_output)->focus_head));
867 con_focus(con_descend_focused(con));
869 /* Restore focus if the output's focused workspace has changed. */
870 if (con_get_workspace(focused) != old_focus)
871 con_focus(old_focus);
874 /* 7: when moving to another workspace, we leave the focus on the current
875 * workspace. (see also #809) */
877 /* Descend focus stack in case focus_next is a workspace which can
878 * occur if we move to the same workspace. Also show current workspace
879 * to ensure it is focused. */
881 workspace_show(current_ws);
883 /* Set focus only if con was on current workspace before moving.
884 * Otherwise we would give focus to some window on different workspace. */
885 if (!ignore_focus && source_ws == current_ws)
886 con_focus(con_descend_focused(focus_next));
888 /* 8. If anything within the container is associated with a startup sequence,
889 * delete it so child windows won't be created on the old workspace. */
890 struct Startup_Sequence *sequence;
891 xcb_get_property_cookie_t cookie;
892 xcb_get_property_reply_t *startup_id_reply;
894 if (!con_is_leaf(con)) {
896 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
900 cookie = xcb_get_property(conn, false, child->window->id,
901 A__NET_STARTUP_ID, XCB_GET_PROPERTY_TYPE_ANY, 0, 512);
902 startup_id_reply = xcb_get_property_reply(conn, cookie, NULL);
904 sequence = startup_sequence_get(child->window, startup_id_reply, true);
905 if (sequence != NULL)
906 startup_sequence_delete(sequence);
911 cookie = xcb_get_property(conn, false, con->window->id,
912 A__NET_STARTUP_ID, XCB_GET_PROPERTY_TYPE_ANY, 0, 512);
913 startup_id_reply = xcb_get_property_reply(conn, cookie, NULL);
915 sequence = startup_sequence_get(con->window, startup_id_reply, true);
916 if (sequence != NULL)
917 startup_sequence_delete(sequence);
920 CALL(parent, on_remove_child);
922 /* 9. If the container was marked urgent, move the urgency hint. */
924 workspace_update_urgent_flag(source_ws);
925 con_set_urgency(con, true);
928 ipc_send_window_event("move", con);
933 * Moves the given container to the given mark.
936 bool con_move_to_mark(Con *con, const char *mark) {
937 Con *target = con_by_mark(mark);
938 if (target == NULL) {
939 DLOG("found no container with mark \"%s\"\n", mark);
943 /* For floating target containers, we just send the window to the same workspace. */
944 if (con_is_floating(target)) {
945 DLOG("target container is floating, moving container to target's workspace.\n");
946 con_move_to_workspace(con, con_get_workspace(target), true, false, false);
950 /* For split containers, we use the currently focused container within it.
951 * This allows setting marks on, e.g., tabbed containers which will move
952 * con to a new tab behind the focused tab. */
953 if (con_is_split(target)) {
954 DLOG("target is a split container, descending to the currently focused child.\n");
955 target = TAILQ_FIRST(&(target->focus_head));
959 DLOG("cannot move the container to itself, aborting.\n");
963 return _con_move_to_con(con, target, false, true, false, false);
967 * Moves the given container to the currently focused container on the given
970 * The fix_coordinates flag will translate the current coordinates (offset from
971 * the monitor position basically) to appropriate coordinates on the
972 * destination workspace.
973 * Not enabling this behaviour comes in handy when this function gets called by
974 * floating_maybe_reassign_ws, which will only "move" a floating window when it
975 * *already* changed its coordinates to a different output.
977 * The dont_warp flag disables pointer warping and will be set when this
978 * function is called while dragging a floating window.
980 * If ignore_focus is set, the container will be moved without modifying focus
983 * TODO: is there a better place for this function?
986 void con_move_to_workspace(Con *con, Con *workspace, bool fix_coordinates, bool dont_warp, bool ignore_focus) {
987 assert(workspace->type == CT_WORKSPACE);
989 Con *source_ws = con_get_workspace(con);
990 if (workspace == source_ws) {
991 DLOG("Not moving, already there\n");
995 Con *target = con_descend_focused(workspace);
996 _con_move_to_con(con, target, true, fix_coordinates, dont_warp, ignore_focus);
1000 * Returns the orientation of the given container (for stacked containers,
1001 * vertical orientation is used regardless of the actual orientation of the
1005 orientation_t con_orientation(Con *con) {
1006 switch (con->layout) {
1008 /* stacking containers behave like they are in vertical orientation */
1013 /* tabbed containers behave like they are in vertical orientation */
1018 DLOG("Someone called con_orientation() on a con with L_DEFAULT, this is a bug in the code.\n");
1024 DLOG("con_orientation() called on dockarea/output (%d) container %p\n", con->layout, con);
1029 DLOG("con_orientation() ran into default\n");
1035 * Returns the container which will be focused next when the given container
1036 * is not available anymore. Called in tree_close and con_move_to_workspace
1037 * to properly restore focus.
1040 Con *con_next_focused(Con *con) {
1042 /* floating containers are attached to a workspace, so we focus either the
1043 * next floating container (if any) or the workspace itself. */
1044 if (con->type == CT_FLOATING_CON) {
1045 DLOG("selecting next for CT_FLOATING_CON\n");
1046 next = TAILQ_NEXT(con, floating_windows);
1047 DLOG("next = %p\n", next);
1049 next = TAILQ_PREV(con, floating_head, floating_windows);
1050 DLOG("using prev, next = %p\n", next);
1053 Con *ws = con_get_workspace(con);
1055 DLOG("no more floating containers for next = %p, restoring workspace focus\n", next);
1056 while (next != TAILQ_END(&(ws->focus_head)) && !TAILQ_EMPTY(&(next->focus_head))) {
1057 next = TAILQ_FIRST(&(next->focus_head));
1059 DLOG("skipping container itself, we want the next client\n");
1060 next = TAILQ_NEXT(next, focused);
1063 if (next == TAILQ_END(&(ws->focus_head))) {
1064 DLOG("Focus list empty, returning ws\n");
1068 /* Instead of returning the next CT_FLOATING_CON, we descend it to
1069 * get an actual window to focus. */
1070 next = con_descend_focused(next);
1075 /* dock clients cannot be focused, so we focus the workspace instead */
1076 if (con->parent->type == CT_DOCKAREA) {
1077 DLOG("selecting workspace for dock client\n");
1078 return con_descend_focused(output_get_content(con->parent->parent));
1081 /* if 'con' is not the first entry in the focus stack, use the first one as
1082 * it’s currently focused already */
1083 Con *first = TAILQ_FIRST(&(con->parent->focus_head));
1085 DLOG("Using first entry %p\n", first);
1088 /* try to focus the next container on the same level as this one or fall
1089 * back to its parent */
1090 if (!(next = TAILQ_NEXT(con, focused)))
1094 /* now go down the focus stack as far as
1095 * possible, excluding the current container */
1096 while (!TAILQ_EMPTY(&(next->focus_head)) &&
1097 TAILQ_FIRST(&(next->focus_head)) != con)
1098 next = TAILQ_FIRST(&(next->focus_head));
1104 * Get the next/previous container in the specified orientation. This may
1105 * travel up until it finds a container with suitable orientation.
1108 Con *con_get_next(Con *con, char way, orientation_t orientation) {
1109 DLOG("con_get_next(way=%c, orientation=%d)\n", way, orientation);
1110 /* 1: get the first parent with the same orientation */
1112 while (con_orientation(cur->parent) != orientation) {
1113 DLOG("need to go one level further up\n");
1114 if (cur->parent->type == CT_WORKSPACE) {
1115 LOG("that's a workspace, we can't go further up\n");
1121 /* 2: chose next (or previous) */
1124 next = TAILQ_NEXT(cur, nodes);
1125 /* if we are at the end of the list, we need to wrap */
1126 if (next == TAILQ_END(&(parent->nodes_head)))
1129 next = TAILQ_PREV(cur, nodes_head, nodes);
1130 /* if we are at the end of the list, we need to wrap */
1131 if (next == TAILQ_END(&(cur->nodes_head)))
1134 DLOG("next = %p\n", next);
1140 * Returns the focused con inside this client, descending the tree as far as
1141 * possible. This comes in handy when attaching a con to a workspace at the
1142 * currently focused position, for example.
1145 Con *con_descend_focused(Con *con) {
1147 while (next != focused && !TAILQ_EMPTY(&(next->focus_head)))
1148 next = TAILQ_FIRST(&(next->focus_head));
1153 * Returns the focused con inside this client, descending the tree as far as
1154 * possible. This comes in handy when attaching a con to a workspace at the
1155 * currently focused position, for example.
1157 * Works like con_descend_focused but considers only tiling cons.
1160 Con *con_descend_tiling_focused(Con *con) {
1164 if (next == focused)
1168 TAILQ_FOREACH(child, &(next->focus_head), focused) {
1169 if (child->type == CT_FLOATING_CON)
1175 } while (before != next && next != focused);
1180 * Returns the leftmost, rightmost, etc. container in sub-tree. For example, if
1181 * direction is D_LEFT, then we return the rightmost container and if direction
1182 * is D_RIGHT, we return the leftmost container. This is because if we are
1183 * moving D_LEFT, and thus want the rightmost container.
1186 Con *con_descend_direction(Con *con, direction_t direction) {
1189 int orientation = con_orientation(con);
1190 DLOG("con_descend_direction(%p, orientation %d, direction %d)\n", con, orientation, direction);
1191 if (direction == D_LEFT || direction == D_RIGHT) {
1192 if (orientation == HORIZ) {
1193 /* If the direction is horizontal, we can use either the first
1194 * (D_RIGHT) or the last con (D_LEFT) */
1195 if (direction == D_RIGHT)
1196 most = TAILQ_FIRST(&(con->nodes_head));
1198 most = TAILQ_LAST(&(con->nodes_head), nodes_head);
1199 } else if (orientation == VERT) {
1200 /* Wrong orientation. We use the last focused con. Within that con,
1201 * we recurse to chose the left/right con or at least the last
1203 TAILQ_FOREACH(current, &(con->focus_head), focused) {
1204 if (current->type != CT_FLOATING_CON) {
1210 /* If the con has no orientation set, it’s not a split container
1211 * but a container with a client window, so stop recursing */
1216 if (direction == D_UP || direction == D_DOWN) {
1217 if (orientation == VERT) {
1218 /* If the direction is vertical, we can use either the first
1219 * (D_DOWN) or the last con (D_UP) */
1220 if (direction == D_UP)
1221 most = TAILQ_LAST(&(con->nodes_head), nodes_head);
1223 most = TAILQ_FIRST(&(con->nodes_head));
1224 } else if (orientation == HORIZ) {
1225 /* Wrong orientation. We use the last focused con. Within that con,
1226 * we recurse to chose the top/bottom con or at least the last
1228 TAILQ_FOREACH(current, &(con->focus_head), focused) {
1229 if (current->type != CT_FLOATING_CON) {
1235 /* If the con has no orientation set, it’s not a split container
1236 * but a container with a client window, so stop recursing */
1243 return con_descend_direction(most, direction);
1247 * Returns a "relative" Rect which contains the amount of pixels that need to
1248 * be added to the original Rect to get the final position (obviously the
1249 * amount of pixels for normal, 1pixel and borderless are different).
1252 Rect con_border_style_rect(Con *con) {
1253 adjacent_t borders_to_hide = ADJ_NONE;
1254 int border_width = con->current_border_width;
1255 DLOG("The border width for con is set to: %d\n", con->current_border_width);
1257 if (con->current_border_width < 0) {
1258 if (con_is_floating(con)) {
1259 border_width = config.default_floating_border_width;
1261 border_width = config.default_border_width;
1264 DLOG("Effective border width is set to: %d\n", border_width);
1265 /* Shortcut to avoid calling con_adjacent_borders() on dock containers. */
1266 int border_style = con_border_style(con);
1267 if (border_style == BS_NONE)
1268 return (Rect){0, 0, 0, 0};
1269 if (border_style == BS_NORMAL) {
1270 result = (Rect){border_width, 0, -(2 * border_width), -(border_width)};
1272 result = (Rect){border_width, border_width, -(2 * border_width), -(2 * border_width)};
1275 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
1276 if (borders_to_hide & ADJ_LEFT_SCREEN_EDGE) {
1277 result.x -= border_width;
1278 result.width += border_width;
1280 if (borders_to_hide & ADJ_RIGHT_SCREEN_EDGE) {
1281 result.width += border_width;
1283 if (borders_to_hide & ADJ_UPPER_SCREEN_EDGE && (border_style != BS_NORMAL)) {
1284 result.y -= border_width;
1285 result.height += border_width;
1287 if (borders_to_hide & ADJ_LOWER_SCREEN_EDGE) {
1288 result.height += border_width;
1294 * Returns adjacent borders of the window. We need this if hide_edge_borders is
1297 adjacent_t con_adjacent_borders(Con *con) {
1298 adjacent_t result = ADJ_NONE;
1299 /* Floating windows are never adjacent to any other window, so
1300 don’t hide their border(s). This prevents bug #998. */
1301 if (con_is_floating(con))
1304 Con *workspace = con_get_workspace(con);
1305 if (con->rect.x == workspace->rect.x)
1306 result |= ADJ_LEFT_SCREEN_EDGE;
1307 if (con->rect.x + con->rect.width == workspace->rect.x + workspace->rect.width)
1308 result |= ADJ_RIGHT_SCREEN_EDGE;
1309 if (con->rect.y == workspace->rect.y)
1310 result |= ADJ_UPPER_SCREEN_EDGE;
1311 if (con->rect.y + con->rect.height == workspace->rect.y + workspace->rect.height)
1312 result |= ADJ_LOWER_SCREEN_EDGE;
1317 * Use this function to get a container’s border style. This is important
1318 * because when inside a stack, the border style is always BS_NORMAL.
1319 * For tabbed mode, the same applies, with one exception: when the container is
1320 * borderless and the only element in the tabbed container, the border is not
1323 * For children of a CT_DOCKAREA, the border style is always none.
1326 int con_border_style(Con *con) {
1327 Con *fs = con_get_fullscreen_con(con->parent, CF_OUTPUT);
1329 DLOG("this one is fullscreen! overriding BS_NONE\n");
1333 if (con->parent->layout == L_STACKED)
1334 return (con_num_children(con->parent) == 1 ? con->border_style : BS_NORMAL);
1336 if (con->parent->layout == L_TABBED && con->border_style != BS_NORMAL)
1337 return (con_num_children(con->parent) == 1 ? con->border_style : BS_NORMAL);
1339 if (con->parent->type == CT_DOCKAREA)
1342 return con->border_style;
1346 * Sets the given border style on con, correctly keeping the position/size of a
1350 void con_set_border_style(Con *con, int border_style, int border_width) {
1351 /* Handle the simple case: non-floating containerns */
1352 if (!con_is_floating(con)) {
1353 con->border_style = border_style;
1354 con->current_border_width = border_width;
1358 /* For floating containers, we want to keep the position/size of the
1359 * *window* itself. We first add the border pixels to con->rect to make
1360 * con->rect represent the absolute position of the window (same for
1361 * parent). Then, we change the border style and subtract the new border
1362 * pixels. For the parent, we do the same also for the decoration. */
1363 DLOG("This is a floating container\n");
1365 Con *parent = con->parent;
1366 Rect bsr = con_border_style_rect(con);
1367 int deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
1369 con->rect = rect_add(con->rect, bsr);
1370 parent->rect = rect_add(parent->rect, bsr);
1371 parent->rect.y += deco_height;
1372 parent->rect.height -= deco_height;
1374 /* Change the border style, get new border/decoration values. */
1375 con->border_style = border_style;
1376 con->current_border_width = border_width;
1377 bsr = con_border_style_rect(con);
1378 deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
1380 con->rect = rect_sub(con->rect, bsr);
1381 parent->rect = rect_sub(parent->rect, bsr);
1382 parent->rect.y -= deco_height;
1383 parent->rect.height += deco_height;
1387 * This function changes the layout of a given container. Use it to handle
1388 * special cases like changing a whole workspace to stacked/tabbed (creates a
1389 * new split container before).
1392 void con_set_layout(Con *con, layout_t layout) {
1393 DLOG("con_set_layout(%p, %d), con->type = %d\n",
1394 con, layout, con->type);
1396 /* Users can focus workspaces, but not any higher in the hierarchy.
1397 * Focus on the workspace is a special case, since in every other case, the
1398 * user means "change the layout of the parent split container". */
1399 if (con->type != CT_WORKSPACE)
1402 /* We fill in last_split_layout when switching to a different layout
1403 * since there are many places in the code that don’t use
1404 * con_set_layout(). */
1405 if (con->layout == L_SPLITH || con->layout == L_SPLITV)
1406 con->last_split_layout = con->layout;
1408 /* When the container type is CT_WORKSPACE, the user wants to change the
1409 * whole workspace into stacked/tabbed mode. To do this and still allow
1410 * intuitive operations (like level-up and then opening a new window), we
1411 * need to create a new split container. */
1412 if (con->type == CT_WORKSPACE &&
1413 (layout == L_STACKED || layout == L_TABBED)) {
1414 if (con_num_children(con) == 0) {
1415 DLOG("Setting workspace_layout to %d\n", layout);
1416 con->workspace_layout = layout;
1418 DLOG("Creating new split container\n");
1419 /* 1: create a new split container */
1420 Con *new = con_new(NULL, NULL);
1423 /* 2: Set the requested layout on the split container and mark it as
1425 new->layout = layout;
1426 new->last_split_layout = con->last_split_layout;
1428 /* Save the container that was focused before we move containers
1429 * around, but only if the container is visible (otherwise focus
1430 * will be restored properly automatically when switching). */
1431 Con *old_focused = TAILQ_FIRST(&(con->focus_head));
1432 if (old_focused == TAILQ_END(&(con->focus_head)))
1434 if (old_focused != NULL &&
1435 !workspace_is_visible(con_get_workspace(old_focused)))
1438 /* 3: move the existing cons of this workspace below the new con */
1439 DLOG("Moving cons\n");
1441 while (!TAILQ_EMPTY(&(con->nodes_head))) {
1442 child = TAILQ_FIRST(&(con->nodes_head));
1444 con_attach(child, new, true);
1447 /* 4: attach the new split container to the workspace */
1448 DLOG("Attaching new split to ws\n");
1449 con_attach(new, con, false);
1452 con_focus(old_focused);
1454 tree_flatten(croot);
1456 con_force_split_parents_redraw(con);
1460 if (layout == L_DEFAULT) {
1461 /* Special case: the layout formerly known as "default" (in combination
1462 * with an orientation). Since we switched to splith/splitv layouts,
1463 * using the "default" layout (which "only" should happen when using
1464 * legacy configs) is using the last split layout (either splith or
1465 * splitv) in order to still do the same thing. */
1466 con->layout = con->last_split_layout;
1467 /* In case last_split_layout was not initialized… */
1468 if (con->layout == L_DEFAULT)
1469 con->layout = L_SPLITH;
1471 con->layout = layout;
1473 con_force_split_parents_redraw(con);
1477 * This function toggles the layout of a given container. toggle_mode can be
1478 * either 'default' (toggle only between stacked/tabbed/last_split_layout),
1479 * 'split' (toggle only between splitv/splith) or 'all' (toggle between all
1483 void con_toggle_layout(Con *con, const char *toggle_mode) {
1485 /* Users can focus workspaces, but not any higher in the hierarchy.
1486 * Focus on the workspace is a special case, since in every other case, the
1487 * user means "change the layout of the parent split container". */
1488 if (con->type != CT_WORKSPACE)
1489 parent = con->parent;
1490 DLOG("con_toggle_layout(%p, %s), parent = %p\n", con, toggle_mode, parent);
1492 if (strcmp(toggle_mode, "split") == 0) {
1493 /* Toggle between splits. When the current layout is not a split
1494 * layout, we just switch back to last_split_layout. Otherwise, we
1495 * change to the opposite split layout. */
1496 if (parent->layout != L_SPLITH && parent->layout != L_SPLITV)
1497 con_set_layout(con, parent->last_split_layout);
1499 if (parent->layout == L_SPLITH)
1500 con_set_layout(con, L_SPLITV);
1502 con_set_layout(con, L_SPLITH);
1505 if (parent->layout == L_STACKED)
1506 con_set_layout(con, L_TABBED);
1507 else if (parent->layout == L_TABBED) {
1508 if (strcmp(toggle_mode, "all") == 0)
1509 con_set_layout(con, L_SPLITH);
1511 con_set_layout(con, parent->last_split_layout);
1512 } else if (parent->layout == L_SPLITH || parent->layout == L_SPLITV) {
1513 if (strcmp(toggle_mode, "all") == 0) {
1514 /* When toggling through all modes, we toggle between
1515 * splith/splitv, whereas normally we just directly jump to
1517 if (parent->layout == L_SPLITH)
1518 con_set_layout(con, L_SPLITV);
1520 con_set_layout(con, L_STACKED);
1522 con_set_layout(con, L_STACKED);
1529 * Callback which will be called when removing a child from the given con.
1530 * Kills the container if it is empty and replaces it with the child if there
1531 * is exactly one child.
1534 static void con_on_remove_child(Con *con) {
1535 DLOG("on_remove_child\n");
1537 /* Every container 'above' (in the hierarchy) the workspace content should
1538 * not be closed when the last child was removed */
1539 if (con->type == CT_OUTPUT ||
1540 con->type == CT_ROOT ||
1541 con->type == CT_DOCKAREA ||
1542 (con->parent != NULL && con->parent->type == CT_OUTPUT)) {
1543 DLOG("not handling, type = %d, name = %s\n", con->type, con->name);
1547 /* For workspaces, close them only if they're not visible anymore */
1548 if (con->type == CT_WORKSPACE) {
1549 if (TAILQ_EMPTY(&(con->focus_head)) && !workspace_is_visible(con)) {
1550 LOG("Closing old workspace (%p / %s), it is empty\n", con, con->name);
1551 yajl_gen gen = ipc_marshal_workspace_event("empty", con, NULL);
1552 tree_close(con, DONT_KILL_WINDOW, false, false);
1554 const unsigned char *payload;
1556 y(get_buf, &payload, &length);
1557 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, (const char *)payload);
1564 con_force_split_parents_redraw(con);
1565 con->urgent = con_has_urgent_child(con);
1566 con_update_parents_urgency(con);
1568 /* TODO: check if this container would swallow any other client and
1569 * don’t close it automatically. */
1570 int children = con_num_children(con);
1571 if (children == 0) {
1572 DLOG("Container empty, closing\n");
1573 tree_close(con, DONT_KILL_WINDOW, false, false);
1579 * Determines the minimum size of the given con by looking at its children (for
1580 * split/stacked/tabbed cons). Will be called when resizing floating cons
1583 Rect con_minimum_size(Con *con) {
1584 DLOG("Determining minimum size for con %p\n", con);
1586 if (con_is_leaf(con)) {
1587 DLOG("leaf node, returning 75x50\n");
1588 return (Rect){0, 0, 75, 50};
1591 if (con->type == CT_FLOATING_CON) {
1592 DLOG("floating con\n");
1593 Con *child = TAILQ_FIRST(&(con->nodes_head));
1594 return con_minimum_size(child);
1597 if (con->layout == L_STACKED || con->layout == L_TABBED) {
1598 uint32_t max_width = 0, max_height = 0, deco_height = 0;
1600 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1601 Rect min = con_minimum_size(child);
1602 deco_height += child->deco_rect.height;
1603 max_width = max(max_width, min.width);
1604 max_height = max(max_height, min.height);
1606 DLOG("stacked/tabbed now, returning %d x %d + deco_rect = %d\n",
1607 max_width, max_height, deco_height);
1608 return (Rect){0, 0, max_width, max_height + deco_height};
1611 /* For horizontal/vertical split containers we sum up the width (h-split)
1612 * or height (v-split) and use the maximum of the height (h-split) or width
1613 * (v-split) as minimum size. */
1614 if (con_is_split(con)) {
1615 uint32_t width = 0, height = 0;
1617 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1618 Rect min = con_minimum_size(child);
1619 if (con->layout == L_SPLITH) {
1621 height = max(height, min.height);
1623 height += min.height;
1624 width = max(width, min.width);
1627 DLOG("split container, returning width = %d x height = %d\n", width, height);
1628 return (Rect){0, 0, width, height};
1631 ELOG("Unhandled case, type = %d, layout = %d, split = %d\n",
1632 con->type, con->layout, con_is_split(con));
1637 * Returns true if changing the focus to con would be allowed considering
1638 * the fullscreen focus constraints. Specifically, if a fullscreen container or
1639 * any of its descendants is focused, this function returns true if and only if
1640 * focusing con would mean that focus would still be visible on screen, i.e.,
1641 * the newly focused container would not be obscured by a fullscreen container.
1643 * In the simplest case, if a fullscreen container or any of its descendants is
1644 * fullscreen, this functions returns true if con is the fullscreen container
1645 * itself or any of its descendants, as this means focus wouldn't escape the
1646 * boundaries of the fullscreen container.
1648 * In case the fullscreen container is of type CF_OUTPUT, this function returns
1649 * true if con is on a different workspace, as focus wouldn't be obscured by
1650 * the fullscreen container that is constrained to a different workspace.
1652 * Note that this same logic can be applied to moving containers. If a
1653 * container can be focused under the fullscreen focus constraints, it can also
1654 * become a parent or sibling to the currently focused container.
1657 bool con_fullscreen_permits_focusing(Con *con) {
1658 /* No focus, no problem. */
1662 /* Find the first fullscreen ascendent. */
1664 while (fs && fs->fullscreen_mode == CF_NONE)
1667 /* fs must be non-NULL since the workspace con doesn’t have CF_NONE and
1668 * there always has to be a workspace con in the hierarchy. */
1670 /* The most common case is we hit the workspace level. In this
1671 * situation, changing focus is also harmless. */
1672 assert(fs->fullscreen_mode != CF_NONE);
1673 if (fs->type == CT_WORKSPACE)
1676 /* Allow it if the container itself is the fullscreen container. */
1680 /* If fullscreen is per-output, the focus being in a different workspace is
1681 * sufficient to guarantee that change won't leave fullscreen in bad shape. */
1682 if (fs->fullscreen_mode == CF_OUTPUT &&
1683 con_get_workspace(con) != con_get_workspace(fs)) {
1687 /* Allow it only if the container to be focused is contained within the
1688 * current fullscreen container. */
1690 if (con->parent == fs)
1695 /* Focusing con would hide it behind a fullscreen window, disallow it. */
1701 * Checks if the given container has an urgent child.
1704 bool con_has_urgent_child(Con *con) {
1707 if (con_is_leaf(con))
1710 /* We are not interested in floating windows since they can only be
1711 * attached to a workspace → nodes_head instead of focus_head */
1712 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1713 if (con_has_urgent_child(child))
1721 * Make all parent containers urgent if con is urgent or clear the urgent flag
1722 * of all parent containers if there are no more urgent children left.
1725 void con_update_parents_urgency(Con *con) {
1726 Con *parent = con->parent;
1728 bool new_urgency_value = con->urgent;
1729 while (parent && parent->type != CT_WORKSPACE && parent->type != CT_DOCKAREA) {
1730 if (new_urgency_value) {
1731 parent->urgent = true;
1733 /* We can only reset the urgency when the parent
1734 * has no other urgent children */
1735 if (!con_has_urgent_child(parent))
1736 parent->urgent = false;
1738 parent = parent->parent;
1743 * Set urgency flag to the container, all the parent containers and the workspace.
1746 void con_set_urgency(Con *con, bool urgent) {
1747 if (urgent && focused == con) {
1748 DLOG("Ignoring urgency flag for current client\n");
1752 const bool old_urgent = con->urgent;
1754 if (con->urgency_timer == NULL) {
1755 con->urgent = urgent;
1757 DLOG("Discarding urgency WM_HINT because timer is running\n");
1762 gettimeofday(&con->window->urgent, NULL);
1764 con->window->urgent.tv_sec = 0;
1765 con->window->urgent.tv_usec = 0;
1769 con_update_parents_urgency(con);
1772 /* Set the urgency flag on the workspace, if a workspace could be found
1773 * (for dock clients, that is not the case). */
1774 if ((ws = con_get_workspace(con)) != NULL)
1775 workspace_update_urgent_flag(ws);
1777 if (con->urgent != old_urgent) {
1778 LOG("Urgency flag changed to %d\n", con->urgent);
1779 ipc_send_window_event("urgent", con);
1784 * Create a string representing the subtree under con.
1787 char *con_get_tree_representation(Con *con) {
1788 /* this code works as follows:
1789 * 1) create a string with the layout type (D/V/H/T/S) and an opening bracket
1790 * 2) append the tree representation of the children to the string
1791 * 3) add closing bracket
1793 * The recursion ends when we hit a leaf, in which case we return the
1794 * class_instance of the contained window.
1797 /* end of recursion */
1798 if (con_is_leaf(con)) {
1800 return sstrdup("nowin");
1802 if (!con->window->class_instance)
1803 return sstrdup("noinstance");
1805 return sstrdup(con->window->class_instance);
1809 /* 1) add the Layout type to buf */
1810 if (con->layout == L_DEFAULT)
1811 buf = sstrdup("D[");
1812 else if (con->layout == L_SPLITV)
1813 buf = sstrdup("V[");
1814 else if (con->layout == L_SPLITH)
1815 buf = sstrdup("H[");
1816 else if (con->layout == L_TABBED)
1817 buf = sstrdup("T[");
1818 else if (con->layout == L_STACKED)
1819 buf = sstrdup("S[");
1821 ELOG("BUG: Code not updated to account for new layout type\n");
1825 /* 2) append representation of children */
1827 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1828 char *child_txt = con_get_tree_representation(child);
1831 sasprintf(&tmp_buf, "%s%s%s", buf,
1832 (TAILQ_FIRST(&(con->nodes_head)) == child ? "" : " "), child_txt);
1837 /* 3) close the brackets */
1839 sasprintf(&complete_buf, "%s]", buf);
1842 return complete_buf;