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 = root_depth;
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));
58 TAILQ_INIT(&(new->marks_head));
61 con_attach(new, parent, false);
66 /* A wrapper for con_new_skeleton, to retain the old con_new behaviour
69 Con *con_new(Con *parent, i3Window *window) {
70 Con *new = con_new_skeleton(parent, window);
71 x_con_init(new, new->depth);
75 static void _con_attach(Con *con, Con *parent, Con *previous, bool ignore_focus) {
78 Con *current = previous;
79 struct nodes_head *nodes_head = &(parent->nodes_head);
80 struct focus_head *focus_head = &(parent->focus_head);
82 /* Workspaces are handled differently: they need to be inserted at the
84 if (con->type == CT_WORKSPACE) {
85 DLOG("it's a workspace. num = %d\n", con->num);
86 if (con->num == -1 || TAILQ_EMPTY(nodes_head)) {
87 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
89 current = TAILQ_FIRST(nodes_head);
90 if (con->num < current->num) {
91 /* we need to insert the container at the beginning */
92 TAILQ_INSERT_HEAD(nodes_head, con, nodes);
94 while (current->num != -1 && con->num > current->num) {
95 current = TAILQ_NEXT(current, nodes);
96 if (current == TAILQ_END(nodes_head)) {
101 /* we need to insert con after current, if current is not NULL */
103 TAILQ_INSERT_BEFORE(current, con, nodes);
105 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
108 goto add_to_focus_head;
111 if (con->type == CT_FLOATING_CON) {
112 DLOG("Inserting into floating containers\n");
113 TAILQ_INSERT_TAIL(&(parent->floating_head), con, floating_windows);
116 /* Get the first tiling container in focus stack */
117 TAILQ_FOREACH(loop, &(parent->focus_head), focused) {
118 if (loop->type == CT_FLOATING_CON)
125 /* When the container is not a split container (but contains a window)
126 * and is attached to a workspace, we check if the user configured a
127 * workspace_layout. This is done in workspace_attach_to, which will
128 * provide us with the container to which we should attach (either the
129 * workspace or a new split container with the configured
132 if (con->window != NULL &&
133 parent->type == CT_WORKSPACE &&
134 parent->workspace_layout != L_DEFAULT) {
135 DLOG("Parent is a workspace. Applying default layout...\n");
136 Con *target = workspace_attach_to(parent);
138 /* Attach the original con to this new split con instead */
139 nodes_head = &(target->nodes_head);
140 focus_head = &(target->focus_head);
141 con->parent = target;
147 /* Insert the container after the tiling container, if found.
148 * When adding to a CT_OUTPUT, just append one after another. */
149 if (current && parent->type != CT_OUTPUT) {
150 DLOG("Inserting con = %p after con %p\n", con, current);
151 TAILQ_INSERT_AFTER(nodes_head, current, con, nodes);
153 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
157 /* We insert to the TAIL because con_focus() will correct this.
158 * This way, we have the option to insert Cons without having
160 TAILQ_INSERT_TAIL(focus_head, con, focused);
161 con_force_split_parents_redraw(con);
165 * Attaches the given container to the given parent. This happens when moving
166 * a container or when inserting a new container at a specific place in the
169 * ignore_focus is to just insert the Con at the end (useful when creating a
170 * new split container *around* some containers, that is, detaching and
171 * attaching them in order without wanting to mess with the focus in between).
174 void con_attach(Con *con, Con *parent, bool ignore_focus) {
175 _con_attach(con, parent, NULL, ignore_focus);
179 * Detaches the given container from its current parent
182 void con_detach(Con *con) {
183 con_force_split_parents_redraw(con);
184 if (con->type == CT_FLOATING_CON) {
185 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
186 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
188 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
189 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
194 * Sets input focus to the given container. Will be updated in X11 in the next
195 * run of x_push_changes().
198 void con_focus(Con *con) {
200 DLOG("con_focus = %p\n", con);
202 /* 1: set focused-pointer to the new con */
203 /* 2: exchange the position of the container in focus stack of the parent all the way up */
204 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
205 TAILQ_INSERT_HEAD(&(con->parent->focus_head), con, focused);
206 if (con->parent->parent != NULL)
207 con_focus(con->parent);
210 /* We can't blindly reset non-leaf containers since they might have
211 * other urgent children. Therefore we only reset leafs and propagate
212 * the changes upwards via con_update_parents_urgency() which does proper
213 * checks before resetting the urgency.
215 if (con->urgent && con_is_leaf(con)) {
216 con_set_urgency(con, false);
217 con_update_parents_urgency(con);
218 workspace_update_urgent_flag(con_get_workspace(con));
219 ipc_send_window_event("urgent", con);
224 * Closes the given container.
227 void con_close(Con *con, kill_window_t kill_window) {
229 DLOG("Closing con = %p.\n", con);
231 /* We never close output or root containers. */
232 if (con->type == CT_OUTPUT || con->type == CT_ROOT) {
233 DLOG("con = %p is of type %d, not closing anything.\n", con, con->type);
237 if (con->type == CT_WORKSPACE) {
238 DLOG("con = %p is a workspace, closing all children instead.\n", con);
239 Con *child, *nextchild;
240 for (child = TAILQ_FIRST(&(con->focus_head)); child;) {
241 nextchild = TAILQ_NEXT(child, focused);
242 DLOG("killing child = %p.\n", child);
243 tree_close_internal(child, kill_window, false, false);
250 tree_close_internal(con, kill_window, false, false);
254 * Returns true when this node is a leaf node (has no children)
257 bool con_is_leaf(Con *con) {
258 return TAILQ_EMPTY(&(con->nodes_head));
262 * Returns true when this con is a leaf node with a managed X11 window (e.g.,
263 * excluding dock containers)
265 bool con_has_managed_window(Con *con) {
266 return (con != NULL && con->window != NULL && con->window->id != XCB_WINDOW_NONE && con_get_workspace(con) != NULL);
270 * Returns true if this node has regular or floating children.
273 bool con_has_children(Con *con) {
274 return (!con_is_leaf(con) || !TAILQ_EMPTY(&(con->floating_head)));
278 * Returns true if a container should be considered split.
281 bool con_is_split(Con *con) {
282 if (con_is_leaf(con))
285 switch (con->layout) {
296 * This will only return true for containers which have some parent with
297 * a tabbed / stacked parent of which they are not the currently focused child.
300 bool con_is_hidden(Con *con) {
303 /* ascend to the workspace level and memorize the highest-up container
304 * which is stacked or tabbed. */
305 while (current != NULL && current->type != CT_WORKSPACE) {
306 Con *parent = current->parent;
307 if (parent != NULL && (parent->layout == L_TABBED || parent->layout == L_STACKED)) {
308 if (TAILQ_FIRST(&(parent->focus_head)) != current)
319 * Returns whether the container or any of its children is sticky.
322 bool con_is_sticky(Con *con) {
327 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
328 if (con_is_sticky(child))
336 * Returns true if this node accepts a window (if the node swallows windows,
337 * it might already have swallowed enough and cannot hold any more).
340 bool con_accepts_window(Con *con) {
341 /* 1: workspaces never accept direct windows */
342 if (con->type == CT_WORKSPACE)
345 if (con_is_split(con)) {
346 DLOG("container %p does not accept windows, it is a split container.\n", con);
350 /* TODO: if this is a swallowing container, we need to check its max_clients */
351 return (con->window == NULL);
355 * Gets the output container (first container with CT_OUTPUT in hierarchy) this
359 Con *con_get_output(Con *con) {
361 while (result != NULL && result->type != CT_OUTPUT)
362 result = result->parent;
363 /* We must be able to get an output because focus can never be set higher
364 * in the tree (root node cannot be focused). */
365 assert(result != NULL);
370 * Gets the workspace container this node is on.
373 Con *con_get_workspace(Con *con) {
375 while (result != NULL && result->type != CT_WORKSPACE)
376 result = result->parent;
381 * Searches parenst of the given 'con' until it reaches one with the specified
382 * 'orientation'. Aborts when it comes across a floating_con.
385 Con *con_parent_with_orientation(Con *con, orientation_t orientation) {
386 DLOG("Searching for parent of Con %p with orientation %d\n", con, orientation);
387 Con *parent = con->parent;
388 if (parent->type == CT_FLOATING_CON)
390 while (con_orientation(parent) != orientation) {
391 DLOG("Need to go one level further up\n");
392 parent = parent->parent;
393 /* Abort when we reach a floating con, or an output con */
395 (parent->type == CT_FLOATING_CON ||
396 parent->type == CT_OUTPUT ||
397 (parent->parent && parent->parent->type == CT_OUTPUT)))
402 DLOG("Result: %p\n", parent);
407 * helper data structure for the breadth-first-search in
408 * con_get_fullscreen_con()
414 TAILQ_ENTRY(bfs_entry) entries;
418 * Returns the first fullscreen node below this node.
421 Con *con_get_fullscreen_con(Con *con, fullscreen_mode_t fullscreen_mode) {
422 Con *current, *child;
424 /* TODO: is breadth-first-search really appropriate? (check as soon as
425 * fullscreen levels and fullscreen for containers is implemented) */
426 TAILQ_HEAD(bfs_head, bfs_entry) bfs_head = TAILQ_HEAD_INITIALIZER(bfs_head);
427 struct bfs_entry *entry = smalloc(sizeof(struct bfs_entry));
429 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
431 while (!TAILQ_EMPTY(&bfs_head)) {
432 entry = TAILQ_FIRST(&bfs_head);
433 current = entry->con;
434 if (current != con && current->fullscreen_mode == fullscreen_mode) {
435 /* empty the queue */
436 while (!TAILQ_EMPTY(&bfs_head)) {
437 entry = TAILQ_FIRST(&bfs_head);
438 TAILQ_REMOVE(&bfs_head, entry, entries);
444 TAILQ_REMOVE(&bfs_head, entry, entries);
447 TAILQ_FOREACH(child, &(current->nodes_head), nodes) {
448 entry = smalloc(sizeof(struct bfs_entry));
450 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
453 TAILQ_FOREACH(child, &(current->floating_head), floating_windows) {
454 entry = smalloc(sizeof(struct bfs_entry));
456 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
464 * Returns true if the container is internal, such as __i3_scratch
467 bool con_is_internal(Con *con) {
468 return (con->name[0] == '_' && con->name[1] == '_');
472 * Returns true if the node is floating.
475 bool con_is_floating(Con *con) {
477 DLOG("checking if con %p is floating\n", con);
478 return (con->floating >= FLOATING_AUTO_ON);
482 * Returns true if the container is a docked container.
485 bool con_is_docked(Con *con) {
486 if (con->parent == NULL)
489 if (con->parent->type == CT_DOCKAREA)
492 return con_is_docked(con->parent);
496 * Checks if the given container is either floating or inside some floating
497 * container. It returns the FLOATING_CON container.
500 Con *con_inside_floating(Con *con) {
502 if (con->type == CT_FLOATING_CON)
505 if (con->floating >= FLOATING_AUTO_ON)
508 if (con->type == CT_WORKSPACE || con->type == CT_OUTPUT)
511 return con_inside_floating(con->parent);
515 * Checks if the given container is inside a focused container.
518 bool con_inside_focused(Con *con) {
523 return con_inside_focused(con->parent);
527 * Returns the container with the given client window ID or NULL if no such
531 Con *con_by_window_id(xcb_window_t window) {
533 TAILQ_FOREACH(con, &all_cons, all_cons)
534 if (con->window != NULL && con->window->id == window)
540 * Returns the container with the given frame ID or NULL if no such container
544 Con *con_by_frame_id(xcb_window_t frame) {
546 TAILQ_FOREACH(con, &all_cons, all_cons)
547 if (con->frame.id == frame)
553 * Returns the container with the given mark or NULL if no such container
557 Con *con_by_mark(const char *mark) {
559 TAILQ_FOREACH(con, &all_cons, all_cons) {
560 if (con_has_mark(con, mark))
568 * Returns true if and only if the given containers holds the mark.
571 bool con_has_mark(Con *con, const char *mark) {
573 TAILQ_FOREACH(current, &(con->marks_head), marks) {
574 if (strcmp(current->name, mark) == 0)
582 * Toggles the mark on a container.
583 * If the container already has this mark, the mark is removed.
584 * Otherwise, the mark is assigned to the container.
587 void con_mark_toggle(Con *con, const char *mark, mark_mode_t mode) {
589 DLOG("Toggling mark \"%s\" on con = %p.\n", mark, con);
591 if (con_has_mark(con, mark)) {
592 con_unmark(con, mark);
594 con_mark(con, mark, mode);
599 * Assigns a mark to the container.
602 void con_mark(Con *con, const char *mark, mark_mode_t mode) {
604 DLOG("Setting mark \"%s\" on con = %p.\n", mark, con);
606 con_unmark(NULL, mark);
607 if (mode == MM_REPLACE) {
608 DLOG("Removing all existing marks on con = %p.\n", con);
611 while (!TAILQ_EMPTY(&(con->marks_head))) {
612 current = TAILQ_FIRST(&(con->marks_head));
613 con_unmark(con, current->name);
617 mark_t *new = scalloc(1, sizeof(mark_t));
618 new->name = sstrdup(mark);
619 TAILQ_INSERT_TAIL(&(con->marks_head), new, marks);
621 con->mark_changed = true;
625 * Removes marks from containers.
626 * If con is NULL, all containers are considered.
627 * If name is NULL, this removes all existing marks.
628 * Otherwise, it will only remove the given mark (if it is present).
631 void con_unmark(Con *con, const char *name) {
634 DLOG("Unmarking all containers.\n");
635 TAILQ_FOREACH(current, &all_cons, all_cons) {
636 if (con != NULL && current != con)
639 if (TAILQ_EMPTY(&(current->marks_head)))
643 while (!TAILQ_EMPTY(&(current->marks_head))) {
644 mark = TAILQ_FIRST(&(current->marks_head));
646 TAILQ_REMOVE(&(current->marks_head), mark, marks);
650 current->mark_changed = true;
653 DLOG("Removing mark \"%s\".\n", name);
654 current = (con == NULL) ? con_by_mark(name) : con;
655 if (current == NULL) {
656 DLOG("No container found with this mark, so there is nothing to do.\n");
660 DLOG("Found mark on con = %p. Removing it now.\n", current);
661 current->mark_changed = true;
664 TAILQ_FOREACH(mark, &(current->marks_head), marks) {
665 if (strcmp(mark->name, name) != 0)
669 TAILQ_REMOVE(&(current->marks_head), mark, marks);
677 * Returns the first container below 'con' which wants to swallow this window
681 Con *con_for_window(Con *con, i3Window *window, Match **store_match) {
684 //DLOG("searching con for window %p starting at con %p\n", window, con);
685 //DLOG("class == %s\n", window->class_class);
687 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
688 TAILQ_FOREACH(match, &(child->swallow_head), matches) {
689 if (!match_matches_window(match, window))
691 if (store_match != NULL)
692 *store_match = match;
695 Con *result = con_for_window(child, window, store_match);
700 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
701 TAILQ_FOREACH(match, &(child->swallow_head), matches) {
702 if (!match_matches_window(match, window))
704 if (store_match != NULL)
705 *store_match = match;
708 Con *result = con_for_window(child, window, store_match);
717 * Returns the number of children of this container.
720 int con_num_children(Con *con) {
724 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
731 * Count the number of windows (i.e., leaf containers).
734 int con_num_windows(Con *con) {
738 if (con_has_managed_window(con))
743 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
744 num += con_num_windows(current);
751 * Updates the percent attribute of the children of the given container. This
752 * function needs to be called when a window is added or removed from a
756 void con_fix_percent(Con *con) {
758 int children = con_num_children(con);
760 // calculate how much we have distributed and how many containers
761 // with a percentage set we have
763 int children_with_percent = 0;
764 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
765 if (child->percent > 0.0) {
766 total += child->percent;
767 ++children_with_percent;
771 // if there were children without a percentage set, set to a value that
772 // will make those children proportional to all others
773 if (children_with_percent != children) {
774 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
775 if (child->percent <= 0.0) {
776 if (children_with_percent == 0)
777 total += (child->percent = 1.0);
779 total += (child->percent = total / children_with_percent);
784 // if we got a zero, just distribute the space equally, otherwise
785 // distribute according to the proportions we got
787 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
788 child->percent = 1.0 / children;
789 } else if (total != 1.0) {
790 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
791 child->percent /= total;
796 * Toggles fullscreen mode for the given container. If there already is a
797 * fullscreen container on this workspace, fullscreen will be disabled and then
798 * enabled for the container the user wants to have in fullscreen mode.
801 void con_toggle_fullscreen(Con *con, int fullscreen_mode) {
802 if (con->type == CT_WORKSPACE) {
803 DLOG("You cannot make a workspace fullscreen.\n");
807 DLOG("toggling fullscreen for %p / %s\n", con, con->name);
809 if (con->fullscreen_mode == CF_NONE)
810 con_enable_fullscreen(con, fullscreen_mode);
812 con_disable_fullscreen(con);
816 * Sets the specified fullscreen mode for the given container, sends the
817 * “fullscreen_mode” event and changes the XCB fullscreen property of the
818 * container’s window, if any.
821 static void con_set_fullscreen_mode(Con *con, fullscreen_mode_t fullscreen_mode) {
822 con->fullscreen_mode = fullscreen_mode;
824 DLOG("mode now: %d\n", con->fullscreen_mode);
826 /* Send an ipc window "fullscreen_mode" event */
827 ipc_send_window_event("fullscreen_mode", con);
829 /* update _NET_WM_STATE if this container has a window */
830 /* TODO: when a window is assigned to a container which is already
831 * fullscreened, this state needs to be pushed to the client, too */
832 if (con->window == NULL)
835 if (con->fullscreen_mode != CF_NONE) {
836 DLOG("Setting _NET_WM_STATE_FULLSCREEN for con = %p / window = %d.\n", con, con->window->id);
837 xcb_add_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_FULLSCREEN);
839 DLOG("Removing _NET_WM_STATE_FULLSCREEN for con = %p / window = %d.\n", con, con->window->id);
840 xcb_remove_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_FULLSCREEN);
845 * Enables fullscreen mode for the given container, if necessary.
847 * If the container’s mode is already CF_OUTPUT or CF_GLOBAL, the container is
848 * kept fullscreen but its mode is set to CF_GLOBAL and CF_OUTPUT,
851 * Other fullscreen containers will be disabled first, if they hide the new
855 void con_enable_fullscreen(Con *con, fullscreen_mode_t fullscreen_mode) {
856 if (con->type == CT_WORKSPACE) {
857 DLOG("You cannot make a workspace fullscreen.\n");
861 assert(fullscreen_mode == CF_GLOBAL || fullscreen_mode == CF_OUTPUT);
863 if (fullscreen_mode == CF_GLOBAL)
864 DLOG("enabling global fullscreen for %p / %s\n", con, con->name);
866 DLOG("enabling fullscreen for %p / %s\n", con, con->name);
868 if (con->fullscreen_mode == fullscreen_mode) {
869 DLOG("fullscreen already enabled for %p / %s\n", con, con->name);
873 Con *con_ws = con_get_workspace(con);
875 /* Disable any fullscreen container that would conflict the new one. */
876 Con *fullscreen = con_get_fullscreen_con(croot, CF_GLOBAL);
877 if (fullscreen == NULL)
878 fullscreen = con_get_fullscreen_con(con_ws, CF_OUTPUT);
879 if (fullscreen != NULL)
880 con_disable_fullscreen(fullscreen);
882 /* Set focus to new fullscreen container. Unless in global fullscreen mode
883 * and on another workspace restore focus afterwards.
884 * Switch to the container’s workspace if mode is global. */
885 Con *cur_ws = con_get_workspace(focused);
886 Con *old_focused = focused;
887 if (fullscreen_mode == CF_GLOBAL && cur_ws != con_ws)
888 workspace_show(con_ws);
890 if (fullscreen_mode != CF_GLOBAL && cur_ws != con_ws)
891 con_focus(old_focused);
893 con_set_fullscreen_mode(con, fullscreen_mode);
897 * Disables fullscreen mode for the given container regardless of the mode, if
901 void con_disable_fullscreen(Con *con) {
902 if (con->type == CT_WORKSPACE) {
903 DLOG("You cannot make a workspace fullscreen.\n");
907 DLOG("disabling fullscreen for %p / %s\n", con, con->name);
909 if (con->fullscreen_mode == CF_NONE) {
910 DLOG("fullscreen already disabled for %p / %s\n", con, con->name);
914 con_set_fullscreen_mode(con, CF_NONE);
917 static bool _con_move_to_con(Con *con, Con *target, bool behind_focused, bool fix_coordinates, bool dont_warp, bool ignore_focus) {
918 Con *orig_target = target;
920 /* Prevent moving if this would violate the fullscreen focus restrictions. */
921 Con *target_ws = con_get_workspace(target);
922 if (!con_fullscreen_permits_focusing(target_ws)) {
923 LOG("Cannot move out of a fullscreen container.\n");
927 if (con_is_floating(con)) {
928 DLOG("Container is floating, using parent instead.\n");
932 Con *source_ws = con_get_workspace(con);
934 if (con->type == CT_WORKSPACE) {
935 /* Re-parent all of the old workspace's floating windows. */
937 while (!TAILQ_EMPTY(&(source_ws->floating_head))) {
938 child = TAILQ_FIRST(&(source_ws->floating_head));
939 con_move_to_workspace(child, target_ws, true, true, false);
942 /* If there are no non-floating children, ignore the workspace. */
943 if (con_is_leaf(con))
946 con = workspace_encapsulate(con);
948 ELOG("Workspace failed to move its contents into a container!\n");
953 /* Save the urgency state so that we can restore it. */
954 bool urgent = con->urgent;
956 /* Save the current workspace. So we can call workspace_show() by the end
957 * of this function. */
958 Con *current_ws = con_get_workspace(focused);
960 Con *source_output = con_get_output(con),
961 *dest_output = con_get_output(target_ws);
963 /* 1: save the container which is going to be focused after the current
964 * container is moved away */
965 Con *focus_next = con_next_focused(con);
967 /* 2: we go up one level, but only when target is a normal container */
968 if (target->type != CT_WORKSPACE) {
969 DLOG("target originally = %p / %s / type %d\n", target, target->name, target->type);
970 target = target->parent;
973 /* 3: if the target container is floating, we get the workspace instead.
974 * Only tiling windows need to get inserted next to the current container.
976 Con *floatingcon = con_inside_floating(target);
977 if (floatingcon != NULL) {
978 DLOG("floatingcon, going up even further\n");
979 target = floatingcon->parent;
982 if (con->type == CT_FLOATING_CON) {
983 Con *ws = con_get_workspace(target);
984 DLOG("This is a floating window, using workspace %p / %s\n", ws, ws->name);
988 if (source_output != dest_output) {
989 /* Take the relative coordinates of the current output, then add them
990 * to the coordinate space of the correct output */
991 if (fix_coordinates && con->type == CT_FLOATING_CON) {
992 floating_fix_coordinates(con, &(source_output->rect), &(dest_output->rect));
994 DLOG("Not fixing coordinates, fix_coordinates flag = %d\n", fix_coordinates);
996 /* If moving to a visible workspace, call show so it can be considered
997 * focused. Must do before attaching because workspace_show checks to see
998 * if focused container is in its area. */
999 if (!ignore_focus && workspace_is_visible(target_ws)) {
1000 workspace_show(target_ws);
1002 /* Don’t warp if told so (when dragging floating windows with the
1003 * mouse for example) */
1005 x_set_warp_to(NULL);
1007 x_set_warp_to(&(con->rect));
1011 /* If moving a fullscreen container and the destination already has a
1012 * fullscreen window on it, un-fullscreen the target's fullscreen con. */
1013 Con *fullscreen = con_get_fullscreen_con(target_ws, CF_OUTPUT);
1014 if (con->fullscreen_mode != CF_NONE && fullscreen != NULL) {
1015 con_toggle_fullscreen(fullscreen, CF_OUTPUT);
1019 DLOG("Re-attaching container to %p / %s\n", target, target->name);
1020 /* 4: re-attach the con to the parent of this focused container */
1021 Con *parent = con->parent;
1023 _con_attach(con, target, behind_focused ? NULL : orig_target, !behind_focused);
1025 /* 5: fix the percentages */
1026 con_fix_percent(parent);
1028 con_fix_percent(target);
1030 /* 6: focus the con on the target workspace, but only within that
1031 * workspace, that is, don’t move focus away if the target workspace is
1033 * We don’t focus the con for i3 pseudo workspaces like __i3_scratch and
1034 * we don’t focus when there is a fullscreen con on that workspace. We
1035 * also don't do it if the caller requested to ignore focus. */
1036 if (!ignore_focus && !con_is_internal(target_ws) && !fullscreen) {
1037 /* We need to save the focused workspace on the output in case the
1038 * new workspace is hidden and it's necessary to immediately switch
1039 * back to the originally-focused workspace. */
1040 Con *old_focus = TAILQ_FIRST(&(output_get_content(dest_output)->focus_head));
1041 con_focus(con_descend_focused(con));
1043 /* Restore focus if the output's focused workspace has changed. */
1044 if (con_get_workspace(focused) != old_focus)
1045 con_focus(old_focus);
1048 /* 7: when moving to another workspace, we leave the focus on the current
1049 * workspace. (see also #809) */
1051 /* Descend focus stack in case focus_next is a workspace which can
1052 * occur if we move to the same workspace. Also show current workspace
1053 * to ensure it is focused. */
1055 workspace_show(current_ws);
1057 /* Set focus only if con was on current workspace before moving.
1058 * Otherwise we would give focus to some window on different workspace. */
1059 if (!ignore_focus && source_ws == current_ws)
1060 con_focus(con_descend_focused(focus_next));
1062 /* 8. If anything within the container is associated with a startup sequence,
1063 * delete it so child windows won't be created on the old workspace. */
1064 struct Startup_Sequence *sequence;
1065 xcb_get_property_cookie_t cookie;
1066 xcb_get_property_reply_t *startup_id_reply;
1068 if (!con_is_leaf(con)) {
1070 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1074 cookie = xcb_get_property(conn, false, child->window->id,
1075 A__NET_STARTUP_ID, XCB_GET_PROPERTY_TYPE_ANY, 0, 512);
1076 startup_id_reply = xcb_get_property_reply(conn, cookie, NULL);
1078 sequence = startup_sequence_get(child->window, startup_id_reply, true);
1079 if (sequence != NULL)
1080 startup_sequence_delete(sequence);
1085 cookie = xcb_get_property(conn, false, con->window->id,
1086 A__NET_STARTUP_ID, XCB_GET_PROPERTY_TYPE_ANY, 0, 512);
1087 startup_id_reply = xcb_get_property_reply(conn, cookie, NULL);
1089 sequence = startup_sequence_get(con->window, startup_id_reply, true);
1090 if (sequence != NULL)
1091 startup_sequence_delete(sequence);
1094 /* 9. If the container was marked urgent, move the urgency hint. */
1096 workspace_update_urgent_flag(source_ws);
1097 con_set_urgency(con, true);
1100 CALL(parent, on_remove_child);
1102 ipc_send_window_event("move", con);
1103 ewmh_update_wm_desktop();
1108 * Moves the given container to the given mark.
1111 bool con_move_to_mark(Con *con, const char *mark) {
1112 Con *target = con_by_mark(mark);
1113 if (target == NULL) {
1114 DLOG("found no container with mark \"%s\"\n", mark);
1118 /* For floating target containers, we just send the window to the same workspace. */
1119 if (con_is_floating(target)) {
1120 DLOG("target container is floating, moving container to target's workspace.\n");
1121 con_move_to_workspace(con, con_get_workspace(target), true, false, false);
1125 if (con->type == CT_WORKSPACE) {
1126 DLOG("target container is a workspace, simply moving the container there.\n");
1127 con_move_to_workspace(con, target, true, false, false);
1131 /* For split containers, we use the currently focused container within it.
1132 * This allows setting marks on, e.g., tabbed containers which will move
1133 * con to a new tab behind the focused tab. */
1134 if (con_is_split(target)) {
1135 DLOG("target is a split container, descending to the currently focused child.\n");
1136 target = TAILQ_FIRST(&(target->focus_head));
1139 if (con == target || con == target->parent) {
1140 DLOG("cannot move the container to or inside itself, aborting.\n");
1144 return _con_move_to_con(con, target, false, true, false, false);
1148 * Moves the given container to the currently focused container on the given
1151 * The fix_coordinates flag will translate the current coordinates (offset from
1152 * the monitor position basically) to appropriate coordinates on the
1153 * destination workspace.
1154 * Not enabling this behaviour comes in handy when this function gets called by
1155 * floating_maybe_reassign_ws, which will only "move" a floating window when it
1156 * *already* changed its coordinates to a different output.
1158 * The dont_warp flag disables pointer warping and will be set when this
1159 * function is called while dragging a floating window.
1161 * If ignore_focus is set, the container will be moved without modifying focus
1164 * TODO: is there a better place for this function?
1167 void con_move_to_workspace(Con *con, Con *workspace, bool fix_coordinates, bool dont_warp, bool ignore_focus) {
1168 assert(workspace->type == CT_WORKSPACE);
1170 Con *source_ws = con_get_workspace(con);
1171 if (workspace == source_ws) {
1172 DLOG("Not moving, already there\n");
1176 Con *target = con_descend_focused(workspace);
1177 _con_move_to_con(con, target, true, fix_coordinates, dont_warp, ignore_focus);
1181 * Moves the given container to the currently focused container on the
1182 * visible workspace on the given output.
1185 void con_move_to_output(Con *con, Output *output) {
1187 GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1189 DLOG("Moving con %p to output %s\n", con, output->name);
1190 con_move_to_workspace(con, ws, false, false, false);
1194 * Returns the orientation of the given container (for stacked containers,
1195 * vertical orientation is used regardless of the actual orientation of the
1199 orientation_t con_orientation(Con *con) {
1200 switch (con->layout) {
1202 /* stacking containers behave like they are in vertical orientation */
1207 /* tabbed containers behave like they are in vertical orientation */
1212 DLOG("Someone called con_orientation() on a con with L_DEFAULT, this is a bug in the code.\n");
1218 DLOG("con_orientation() called on dockarea/output (%d) container %p\n", con->layout, con);
1223 DLOG("con_orientation() ran into default\n");
1229 * Returns the container which will be focused next when the given container
1230 * is not available anymore. Called in tree_close_internal and con_move_to_workspace
1231 * to properly restore focus.
1234 Con *con_next_focused(Con *con) {
1236 /* floating containers are attached to a workspace, so we focus either the
1237 * next floating container (if any) or the workspace itself. */
1238 if (con->type == CT_FLOATING_CON) {
1239 DLOG("selecting next for CT_FLOATING_CON\n");
1240 next = TAILQ_NEXT(con, floating_windows);
1241 DLOG("next = %p\n", next);
1243 next = TAILQ_PREV(con, floating_head, floating_windows);
1244 DLOG("using prev, next = %p\n", next);
1247 Con *ws = con_get_workspace(con);
1249 DLOG("no more floating containers for next = %p, restoring workspace focus\n", next);
1250 while (next != TAILQ_END(&(ws->focus_head)) && !TAILQ_EMPTY(&(next->focus_head))) {
1251 next = TAILQ_FIRST(&(next->focus_head));
1253 DLOG("skipping container itself, we want the next client\n");
1254 next = TAILQ_NEXT(next, focused);
1257 if (next == TAILQ_END(&(ws->focus_head))) {
1258 DLOG("Focus list empty, returning ws\n");
1262 /* Instead of returning the next CT_FLOATING_CON, we descend it to
1263 * get an actual window to focus. */
1264 next = con_descend_focused(next);
1269 /* dock clients cannot be focused, so we focus the workspace instead */
1270 if (con->parent->type == CT_DOCKAREA) {
1271 DLOG("selecting workspace for dock client\n");
1272 return con_descend_focused(output_get_content(con->parent->parent));
1275 /* if 'con' is not the first entry in the focus stack, use the first one as
1276 * it’s currently focused already */
1277 Con *first = TAILQ_FIRST(&(con->parent->focus_head));
1279 DLOG("Using first entry %p\n", first);
1282 /* try to focus the next container on the same level as this one or fall
1283 * back to its parent */
1284 if (!(next = TAILQ_NEXT(con, focused)))
1288 /* now go down the focus stack as far as
1289 * possible, excluding the current container */
1290 while (!TAILQ_EMPTY(&(next->focus_head)) &&
1291 TAILQ_FIRST(&(next->focus_head)) != con)
1292 next = TAILQ_FIRST(&(next->focus_head));
1298 * Get the next/previous container in the specified orientation. This may
1299 * travel up until it finds a container with suitable orientation.
1302 Con *con_get_next(Con *con, char way, orientation_t orientation) {
1303 DLOG("con_get_next(way=%c, orientation=%d)\n", way, orientation);
1304 /* 1: get the first parent with the same orientation */
1306 while (con_orientation(cur->parent) != orientation) {
1307 DLOG("need to go one level further up\n");
1308 if (cur->parent->type == CT_WORKSPACE) {
1309 LOG("that's a workspace, we can't go further up\n");
1315 /* 2: chose next (or previous) */
1318 next = TAILQ_NEXT(cur, nodes);
1319 /* if we are at the end of the list, we need to wrap */
1320 if (next == TAILQ_END(&(parent->nodes_head)))
1323 next = TAILQ_PREV(cur, nodes_head, nodes);
1324 /* if we are at the end of the list, we need to wrap */
1325 if (next == TAILQ_END(&(cur->nodes_head)))
1328 DLOG("next = %p\n", next);
1334 * Returns the focused con inside this client, descending the tree as far as
1335 * possible. This comes in handy when attaching a con to a workspace at the
1336 * currently focused position, for example.
1339 Con *con_descend_focused(Con *con) {
1341 while (next != focused && !TAILQ_EMPTY(&(next->focus_head)))
1342 next = TAILQ_FIRST(&(next->focus_head));
1347 * Returns the focused con inside this client, descending the tree as far as
1348 * possible. This comes in handy when attaching a con to a workspace at the
1349 * currently focused position, for example.
1351 * Works like con_descend_focused but considers only tiling cons.
1354 Con *con_descend_tiling_focused(Con *con) {
1358 if (next == focused)
1362 TAILQ_FOREACH(child, &(next->focus_head), focused) {
1363 if (child->type == CT_FLOATING_CON)
1369 } while (before != next && next != focused);
1374 * Returns the leftmost, rightmost, etc. container in sub-tree. For example, if
1375 * direction is D_LEFT, then we return the rightmost container and if direction
1376 * is D_RIGHT, we return the leftmost container. This is because if we are
1377 * moving D_LEFT, and thus want the rightmost container.
1380 Con *con_descend_direction(Con *con, direction_t direction) {
1383 int orientation = con_orientation(con);
1384 DLOG("con_descend_direction(%p, orientation %d, direction %d)\n", con, orientation, direction);
1385 if (direction == D_LEFT || direction == D_RIGHT) {
1386 if (orientation == HORIZ) {
1387 /* If the direction is horizontal, we can use either the first
1388 * (D_RIGHT) or the last con (D_LEFT) */
1389 if (direction == D_RIGHT)
1390 most = TAILQ_FIRST(&(con->nodes_head));
1392 most = TAILQ_LAST(&(con->nodes_head), nodes_head);
1393 } else if (orientation == VERT) {
1394 /* Wrong orientation. We use the last focused con. Within that con,
1395 * we recurse to chose the left/right con or at least the last
1397 TAILQ_FOREACH(current, &(con->focus_head), focused) {
1398 if (current->type != CT_FLOATING_CON) {
1404 /* If the con has no orientation set, it’s not a split container
1405 * but a container with a client window, so stop recursing */
1410 if (direction == D_UP || direction == D_DOWN) {
1411 if (orientation == VERT) {
1412 /* If the direction is vertical, we can use either the first
1413 * (D_DOWN) or the last con (D_UP) */
1414 if (direction == D_UP)
1415 most = TAILQ_LAST(&(con->nodes_head), nodes_head);
1417 most = TAILQ_FIRST(&(con->nodes_head));
1418 } else if (orientation == HORIZ) {
1419 /* Wrong orientation. We use the last focused con. Within that con,
1420 * we recurse to chose the top/bottom con or at least the last
1422 TAILQ_FOREACH(current, &(con->focus_head), focused) {
1423 if (current->type != CT_FLOATING_CON) {
1429 /* If the con has no orientation set, it’s not a split container
1430 * but a container with a client window, so stop recursing */
1437 return con_descend_direction(most, direction);
1441 * Returns a "relative" Rect which contains the amount of pixels that need to
1442 * be added to the original Rect to get the final position (obviously the
1443 * amount of pixels for normal, 1pixel and borderless are different).
1446 Rect con_border_style_rect(Con *con) {
1447 adjacent_t borders_to_hide = ADJ_NONE;
1448 int border_width = con->current_border_width;
1449 DLOG("The border width for con is set to: %d\n", con->current_border_width);
1451 if (con->current_border_width < 0) {
1452 if (con_is_floating(con)) {
1453 border_width = config.default_floating_border_width;
1455 border_width = config.default_border_width;
1458 DLOG("Effective border width is set to: %d\n", border_width);
1459 /* Shortcut to avoid calling con_adjacent_borders() on dock containers. */
1460 int border_style = con_border_style(con);
1461 if (border_style == BS_NONE)
1462 return (Rect){0, 0, 0, 0};
1463 if (border_style == BS_NORMAL) {
1464 result = (Rect){border_width, 0, -(2 * border_width), -(border_width)};
1466 result = (Rect){border_width, border_width, -(2 * border_width), -(2 * border_width)};
1469 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
1470 if (borders_to_hide & ADJ_LEFT_SCREEN_EDGE) {
1471 result.x -= border_width;
1472 result.width += border_width;
1474 if (borders_to_hide & ADJ_RIGHT_SCREEN_EDGE) {
1475 result.width += border_width;
1477 if (borders_to_hide & ADJ_UPPER_SCREEN_EDGE && (border_style != BS_NORMAL)) {
1478 result.y -= border_width;
1479 result.height += border_width;
1481 if (borders_to_hide & ADJ_LOWER_SCREEN_EDGE) {
1482 result.height += border_width;
1488 * Returns adjacent borders of the window. We need this if hide_edge_borders is
1491 adjacent_t con_adjacent_borders(Con *con) {
1492 adjacent_t result = ADJ_NONE;
1493 /* Floating windows are never adjacent to any other window, so
1494 don’t hide their border(s). This prevents bug #998. */
1495 if (con_is_floating(con))
1498 Con *workspace = con_get_workspace(con);
1499 if (con->rect.x == workspace->rect.x)
1500 result |= ADJ_LEFT_SCREEN_EDGE;
1501 if (con->rect.x + con->rect.width == workspace->rect.x + workspace->rect.width)
1502 result |= ADJ_RIGHT_SCREEN_EDGE;
1503 if (con->rect.y == workspace->rect.y)
1504 result |= ADJ_UPPER_SCREEN_EDGE;
1505 if (con->rect.y + con->rect.height == workspace->rect.y + workspace->rect.height)
1506 result |= ADJ_LOWER_SCREEN_EDGE;
1511 * Use this function to get a container’s border style. This is important
1512 * because when inside a stack, the border style is always BS_NORMAL.
1513 * For tabbed mode, the same applies, with one exception: when the container is
1514 * borderless and the only element in the tabbed container, the border is not
1517 * For children of a CT_DOCKAREA, the border style is always none.
1520 int con_border_style(Con *con) {
1521 Con *fs = con_get_fullscreen_con(con->parent, CF_OUTPUT);
1523 DLOG("this one is fullscreen! overriding BS_NONE\n");
1527 if (con->parent->layout == L_STACKED)
1528 return (con_num_children(con->parent) == 1 ? con->border_style : BS_NORMAL);
1530 if (con->parent->layout == L_TABBED && con->border_style != BS_NORMAL)
1531 return (con_num_children(con->parent) == 1 ? con->border_style : BS_NORMAL);
1533 if (con->parent->type == CT_DOCKAREA)
1536 return con->border_style;
1540 * Sets the given border style on con, correctly keeping the position/size of a
1544 void con_set_border_style(Con *con, int border_style, int border_width) {
1545 /* Handle the simple case: non-floating containerns */
1546 if (!con_is_floating(con)) {
1547 con->border_style = border_style;
1548 con->current_border_width = border_width;
1552 /* For floating containers, we want to keep the position/size of the
1553 * *window* itself. We first add the border pixels to con->rect to make
1554 * con->rect represent the absolute position of the window (same for
1555 * parent). Then, we change the border style and subtract the new border
1556 * pixels. For the parent, we do the same also for the decoration. */
1557 DLOG("This is a floating container\n");
1559 Con *parent = con->parent;
1560 Rect bsr = con_border_style_rect(con);
1561 int deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
1563 con->rect = rect_add(con->rect, bsr);
1564 parent->rect = rect_add(parent->rect, bsr);
1565 parent->rect.y += deco_height;
1566 parent->rect.height -= deco_height;
1568 /* Change the border style, get new border/decoration values. */
1569 con->border_style = border_style;
1570 con->current_border_width = border_width;
1571 bsr = con_border_style_rect(con);
1572 deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
1574 con->rect = rect_sub(con->rect, bsr);
1575 parent->rect = rect_sub(parent->rect, bsr);
1576 parent->rect.y -= deco_height;
1577 parent->rect.height += deco_height;
1581 * This function changes the layout of a given container. Use it to handle
1582 * special cases like changing a whole workspace to stacked/tabbed (creates a
1583 * new split container before).
1586 void con_set_layout(Con *con, layout_t layout) {
1587 DLOG("con_set_layout(%p, %d), con->type = %d\n",
1588 con, layout, con->type);
1590 /* Users can focus workspaces, but not any higher in the hierarchy.
1591 * Focus on the workspace is a special case, since in every other case, the
1592 * user means "change the layout of the parent split container". */
1593 if (con->type != CT_WORKSPACE)
1596 /* We fill in last_split_layout when switching to a different layout
1597 * since there are many places in the code that don’t use
1598 * con_set_layout(). */
1599 if (con->layout == L_SPLITH || con->layout == L_SPLITV)
1600 con->last_split_layout = con->layout;
1602 /* When the container type is CT_WORKSPACE, the user wants to change the
1603 * whole workspace into stacked/tabbed mode. To do this and still allow
1604 * intuitive operations (like level-up and then opening a new window), we
1605 * need to create a new split container. */
1606 if (con->type == CT_WORKSPACE &&
1607 (layout == L_STACKED || layout == L_TABBED)) {
1608 if (con_num_children(con) == 0) {
1609 DLOG("Setting workspace_layout to %d\n", layout);
1610 con->workspace_layout = layout;
1612 DLOG("Creating new split container\n");
1613 /* 1: create a new split container */
1614 Con *new = con_new(NULL, NULL);
1617 /* 2: Set the requested layout on the split container and mark it as
1619 new->layout = layout;
1620 new->last_split_layout = con->last_split_layout;
1622 /* Save the container that was focused before we move containers
1623 * around, but only if the container is visible (otherwise focus
1624 * will be restored properly automatically when switching). */
1625 Con *old_focused = TAILQ_FIRST(&(con->focus_head));
1626 if (old_focused == TAILQ_END(&(con->focus_head)))
1628 if (old_focused != NULL &&
1629 !workspace_is_visible(con_get_workspace(old_focused)))
1632 /* 3: move the existing cons of this workspace below the new con */
1633 DLOG("Moving cons\n");
1635 while (!TAILQ_EMPTY(&(con->nodes_head))) {
1636 child = TAILQ_FIRST(&(con->nodes_head));
1638 con_attach(child, new, true);
1641 /* 4: attach the new split container to the workspace */
1642 DLOG("Attaching new split to ws\n");
1643 con_attach(new, con, false);
1646 con_focus(old_focused);
1648 tree_flatten(croot);
1650 con_force_split_parents_redraw(con);
1654 if (layout == L_DEFAULT) {
1655 /* Special case: the layout formerly known as "default" (in combination
1656 * with an orientation). Since we switched to splith/splitv layouts,
1657 * using the "default" layout (which "only" should happen when using
1658 * legacy configs) is using the last split layout (either splith or
1659 * splitv) in order to still do the same thing. */
1660 con->layout = con->last_split_layout;
1661 /* In case last_split_layout was not initialized… */
1662 if (con->layout == L_DEFAULT)
1663 con->layout = L_SPLITH;
1665 con->layout = layout;
1667 con_force_split_parents_redraw(con);
1671 * This function toggles the layout of a given container. toggle_mode can be
1672 * either 'default' (toggle only between stacked/tabbed/last_split_layout),
1673 * 'split' (toggle only between splitv/splith) or 'all' (toggle between all
1677 void con_toggle_layout(Con *con, const char *toggle_mode) {
1679 /* Users can focus workspaces, but not any higher in the hierarchy.
1680 * Focus on the workspace is a special case, since in every other case, the
1681 * user means "change the layout of the parent split container". */
1682 if (con->type != CT_WORKSPACE)
1683 parent = con->parent;
1684 DLOG("con_toggle_layout(%p, %s), parent = %p\n", con, toggle_mode, parent);
1686 if (strcmp(toggle_mode, "split") == 0) {
1687 /* Toggle between splits. When the current layout is not a split
1688 * layout, we just switch back to last_split_layout. Otherwise, we
1689 * change to the opposite split layout. */
1690 if (parent->layout != L_SPLITH && parent->layout != L_SPLITV)
1691 con_set_layout(con, parent->last_split_layout);
1693 if (parent->layout == L_SPLITH)
1694 con_set_layout(con, L_SPLITV);
1696 con_set_layout(con, L_SPLITH);
1699 if (parent->layout == L_STACKED)
1700 con_set_layout(con, L_TABBED);
1701 else if (parent->layout == L_TABBED) {
1702 if (strcmp(toggle_mode, "all") == 0)
1703 con_set_layout(con, L_SPLITH);
1705 con_set_layout(con, parent->last_split_layout);
1706 } else if (parent->layout == L_SPLITH || parent->layout == L_SPLITV) {
1707 if (strcmp(toggle_mode, "all") == 0) {
1708 /* When toggling through all modes, we toggle between
1709 * splith/splitv, whereas normally we just directly jump to
1711 if (parent->layout == L_SPLITH)
1712 con_set_layout(con, L_SPLITV);
1714 con_set_layout(con, L_STACKED);
1716 con_set_layout(con, L_STACKED);
1723 * Callback which will be called when removing a child from the given con.
1724 * Kills the container if it is empty and replaces it with the child if there
1725 * is exactly one child.
1728 static void con_on_remove_child(Con *con) {
1729 DLOG("on_remove_child\n");
1731 /* Every container 'above' (in the hierarchy) the workspace content should
1732 * not be closed when the last child was removed */
1733 if (con->type == CT_OUTPUT ||
1734 con->type == CT_ROOT ||
1735 con->type == CT_DOCKAREA ||
1736 (con->parent != NULL && con->parent->type == CT_OUTPUT)) {
1737 DLOG("not handling, type = %d, name = %s\n", con->type, con->name);
1741 /* For workspaces, close them only if they're not visible anymore */
1742 if (con->type == CT_WORKSPACE) {
1743 if (TAILQ_EMPTY(&(con->focus_head)) && !workspace_is_visible(con)) {
1744 LOG("Closing old workspace (%p / %s), it is empty\n", con, con->name);
1745 yajl_gen gen = ipc_marshal_workspace_event("empty", con, NULL);
1746 tree_close_internal(con, DONT_KILL_WINDOW, false, false);
1748 const unsigned char *payload;
1750 y(get_buf, &payload, &length);
1751 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, (const char *)payload);
1758 con_force_split_parents_redraw(con);
1759 con->urgent = con_has_urgent_child(con);
1760 con_update_parents_urgency(con);
1762 /* TODO: check if this container would swallow any other client and
1763 * don’t close it automatically. */
1764 int children = con_num_children(con);
1765 if (children == 0) {
1766 DLOG("Container empty, closing\n");
1767 tree_close_internal(con, DONT_KILL_WINDOW, false, false);
1773 * Determines the minimum size of the given con by looking at its children (for
1774 * split/stacked/tabbed cons). Will be called when resizing floating cons
1777 Rect con_minimum_size(Con *con) {
1778 DLOG("Determining minimum size for con %p\n", con);
1780 if (con_is_leaf(con)) {
1781 DLOG("leaf node, returning 75x50\n");
1782 return (Rect){0, 0, 75, 50};
1785 if (con->type == CT_FLOATING_CON) {
1786 DLOG("floating con\n");
1787 Con *child = TAILQ_FIRST(&(con->nodes_head));
1788 return con_minimum_size(child);
1791 if (con->layout == L_STACKED || con->layout == L_TABBED) {
1792 uint32_t max_width = 0, max_height = 0, deco_height = 0;
1794 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1795 Rect min = con_minimum_size(child);
1796 deco_height += child->deco_rect.height;
1797 max_width = max(max_width, min.width);
1798 max_height = max(max_height, min.height);
1800 DLOG("stacked/tabbed now, returning %d x %d + deco_rect = %d\n",
1801 max_width, max_height, deco_height);
1802 return (Rect){0, 0, max_width, max_height + deco_height};
1805 /* For horizontal/vertical split containers we sum up the width (h-split)
1806 * or height (v-split) and use the maximum of the height (h-split) or width
1807 * (v-split) as minimum size. */
1808 if (con_is_split(con)) {
1809 uint32_t width = 0, height = 0;
1811 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1812 Rect min = con_minimum_size(child);
1813 if (con->layout == L_SPLITH) {
1815 height = max(height, min.height);
1817 height += min.height;
1818 width = max(width, min.width);
1821 DLOG("split container, returning width = %d x height = %d\n", width, height);
1822 return (Rect){0, 0, width, height};
1825 ELOG("Unhandled case, type = %d, layout = %d, split = %d\n",
1826 con->type, con->layout, con_is_split(con));
1831 * Returns true if changing the focus to con would be allowed considering
1832 * the fullscreen focus constraints. Specifically, if a fullscreen container or
1833 * any of its descendants is focused, this function returns true if and only if
1834 * focusing con would mean that focus would still be visible on screen, i.e.,
1835 * the newly focused container would not be obscured by a fullscreen container.
1837 * In the simplest case, if a fullscreen container or any of its descendants is
1838 * fullscreen, this functions returns true if con is the fullscreen container
1839 * itself or any of its descendants, as this means focus wouldn't escape the
1840 * boundaries of the fullscreen container.
1842 * In case the fullscreen container is of type CF_OUTPUT, this function returns
1843 * true if con is on a different workspace, as focus wouldn't be obscured by
1844 * the fullscreen container that is constrained to a different workspace.
1846 * Note that this same logic can be applied to moving containers. If a
1847 * container can be focused under the fullscreen focus constraints, it can also
1848 * become a parent or sibling to the currently focused container.
1851 bool con_fullscreen_permits_focusing(Con *con) {
1852 /* No focus, no problem. */
1856 /* Find the first fullscreen ascendent. */
1858 while (fs && fs->fullscreen_mode == CF_NONE)
1861 /* fs must be non-NULL since the workspace con doesn’t have CF_NONE and
1862 * there always has to be a workspace con in the hierarchy. */
1864 /* The most common case is we hit the workspace level. In this
1865 * situation, changing focus is also harmless. */
1866 assert(fs->fullscreen_mode != CF_NONE);
1867 if (fs->type == CT_WORKSPACE)
1870 /* Allow it if the container itself is the fullscreen container. */
1874 /* If fullscreen is per-output, the focus being in a different workspace is
1875 * sufficient to guarantee that change won't leave fullscreen in bad shape. */
1876 if (fs->fullscreen_mode == CF_OUTPUT &&
1877 con_get_workspace(con) != con_get_workspace(fs)) {
1881 /* Allow it only if the container to be focused is contained within the
1882 * current fullscreen container. */
1884 if (con->parent == fs)
1889 /* Focusing con would hide it behind a fullscreen window, disallow it. */
1895 * Checks if the given container has an urgent child.
1898 bool con_has_urgent_child(Con *con) {
1901 if (con_is_leaf(con))
1904 /* We are not interested in floating windows since they can only be
1905 * attached to a workspace → nodes_head instead of focus_head */
1906 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1907 if (con_has_urgent_child(child))
1915 * Make all parent containers urgent if con is urgent or clear the urgent flag
1916 * of all parent containers if there are no more urgent children left.
1919 void con_update_parents_urgency(Con *con) {
1920 Con *parent = con->parent;
1922 bool new_urgency_value = con->urgent;
1923 while (parent && parent->type != CT_WORKSPACE && parent->type != CT_DOCKAREA) {
1924 if (new_urgency_value) {
1925 parent->urgent = true;
1927 /* We can only reset the urgency when the parent
1928 * has no other urgent children */
1929 if (!con_has_urgent_child(parent))
1930 parent->urgent = false;
1932 parent = parent->parent;
1937 * Set urgency flag to the container, all the parent containers and the workspace.
1940 void con_set_urgency(Con *con, bool urgent) {
1941 if (urgent && focused == con) {
1942 DLOG("Ignoring urgency flag for current client\n");
1946 const bool old_urgent = con->urgent;
1948 if (con->urgency_timer == NULL) {
1949 con->urgent = urgent;
1951 DLOG("Discarding urgency WM_HINT because timer is running\n");
1956 gettimeofday(&con->window->urgent, NULL);
1958 con->window->urgent.tv_sec = 0;
1959 con->window->urgent.tv_usec = 0;
1963 con_update_parents_urgency(con);
1966 /* Set the urgency flag on the workspace, if a workspace could be found
1967 * (for dock clients, that is not the case). */
1968 if ((ws = con_get_workspace(con)) != NULL)
1969 workspace_update_urgent_flag(ws);
1971 if (con->urgent != old_urgent) {
1972 LOG("Urgency flag changed to %d\n", con->urgent);
1973 ipc_send_window_event("urgent", con);
1978 * Create a string representing the subtree under con.
1981 char *con_get_tree_representation(Con *con) {
1982 /* this code works as follows:
1983 * 1) create a string with the layout type (D/V/H/T/S) and an opening bracket
1984 * 2) append the tree representation of the children to the string
1985 * 3) add closing bracket
1987 * The recursion ends when we hit a leaf, in which case we return the
1988 * class_instance of the contained window.
1991 /* end of recursion */
1992 if (con_is_leaf(con)) {
1994 return sstrdup("nowin");
1996 if (!con->window->class_instance)
1997 return sstrdup("noinstance");
1999 return sstrdup(con->window->class_instance);
2003 /* 1) add the Layout type to buf */
2004 if (con->layout == L_DEFAULT)
2005 buf = sstrdup("D[");
2006 else if (con->layout == L_SPLITV)
2007 buf = sstrdup("V[");
2008 else if (con->layout == L_SPLITH)
2009 buf = sstrdup("H[");
2010 else if (con->layout == L_TABBED)
2011 buf = sstrdup("T[");
2012 else if (con->layout == L_STACKED)
2013 buf = sstrdup("S[");
2015 ELOG("BUG: Code not updated to account for new layout type\n");
2019 /* 2) append representation of children */
2021 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
2022 char *child_txt = con_get_tree_representation(child);
2025 sasprintf(&tmp_buf, "%s%s%s", buf,
2026 (TAILQ_FIRST(&(con->nodes_head)) == child ? "" : " "), child_txt);
2032 /* 3) close the brackets */
2034 sasprintf(&complete_buf, "%s]", buf);
2037 return complete_buf;
2041 * Returns the container's title considering the current title format.
2044 i3String *con_parse_title_format(Con *con) {
2045 assert(con->title_format != NULL);
2047 i3Window *win = con->window;
2049 /* We need to ensure that we only escape the window title if pango
2050 * is used by the current font. */
2051 const bool pango_markup = font_is_pango();
2057 title = pango_escape_markup(con_get_tree_representation(con));
2058 class = sstrdup("i3-frame");
2059 instance = sstrdup("i3-frame");
2061 title = pango_escape_markup(sstrdup((win->name == NULL) ? "" : i3string_as_utf8(win->name)));
2062 class = pango_escape_markup(sstrdup((win->class_class == NULL) ? "" : win->class_class));
2063 instance = pango_escape_markup(sstrdup((win->class_instance == NULL) ? "" : win->class_instance));
2066 placeholder_t placeholders[] = {
2067 {.name = "%title", .value = title},
2068 {.name = "%class", .value = class},
2069 {.name = "%instance", .value = instance}};
2070 const size_t num = sizeof(placeholders) / sizeof(placeholder_t);
2072 char *formatted_str = format_placeholders(con->title_format, &placeholders[0], num);
2073 i3String *formatted = i3string_from_utf8(formatted_str);
2074 i3string_set_markup(formatted, pango_markup);
2075 FREE(formatted_str);
2077 for (size_t i = 0; i < num; i++) {
2078 FREE(placeholders[i].value);