2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
7 * con.c: Functions which deal with containers directly (creating containers,
8 * searching containers, getting specific properties from containers,
27 static void con_on_remove_child(Con *con);
30 * Create a new container (and attach it to the given parent, if not NULL).
31 * This function initializes the data structures and creates the appropriate
32 * X11 IDs using x_con_init().
35 Con *con_new(Con *parent, i3Window *window) {
36 Con *new = scalloc(sizeof(Con));
37 new->on_remove_child = con_on_remove_child;
38 TAILQ_INSERT_TAIL(&all_cons, new, all_cons);
41 new->border_style = config.default_border;
43 DLOG("opening window %d\n", cnt);
45 /* TODO: remove window coloring after test-phase */
46 DLOG("color %s\n", colors[cnt]);
47 new->name = strdup(colors[cnt]);
48 //uint32_t cp = get_colorpixel(colors[cnt]);
50 if ((cnt % (sizeof(colors) / sizeof(char*))) == 0)
55 TAILQ_INIT(&(new->floating_head));
56 TAILQ_INIT(&(new->nodes_head));
57 TAILQ_INIT(&(new->focus_head));
58 TAILQ_INIT(&(new->swallow_head));
61 con_attach(new, parent, false);
67 * Attaches the given container to the given parent. This happens when moving
68 * a container or when inserting a new container at a specific place in the
71 * ignore_focus is to just insert the Con at the end (useful when creating a
72 * new split container *around* some containers, that is, detaching and
73 * attaching them in order without wanting to mess with the focus in between).
76 void con_attach(Con *con, Con *parent, bool ignore_focus) {
80 struct nodes_head *nodes_head = &(parent->nodes_head);
81 struct focus_head *focus_head = &(parent->focus_head);
83 /* Workspaces are handled differently: they need to be inserted at the
85 if (con->type == CT_WORKSPACE) {
86 DLOG("it's a workspace. num = %d\n", con->num);
87 if (con->num == -1 || TAILQ_EMPTY(nodes_head)) {
88 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
90 current = TAILQ_FIRST(nodes_head);
91 if (con->num < current->num) {
92 /* we need to insert the container at the beginning */
93 TAILQ_INSERT_HEAD(nodes_head, con, nodes);
95 while (current->num != -1 && con->num > current->num) {
96 current = TAILQ_NEXT(current, nodes);
97 if (current == TAILQ_END(nodes_head)) {
102 /* we need to insert con after current, if current is not NULL */
104 TAILQ_INSERT_BEFORE(current, con, nodes);
105 else 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 config.default_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 last focused tiling con %p\n",
152 TAILQ_INSERT_AFTER(nodes_head, current, con, nodes);
153 } else 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);
164 * Detaches the given container from its current parent
167 void con_detach(Con *con) {
168 if (con->type == CT_FLOATING_CON) {
169 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
170 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
172 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
173 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
178 * Sets input focus to the given container. Will be updated in X11 in the next
179 * run of x_push_changes().
182 void con_focus(Con *con) {
184 DLOG("con_focus = %p\n", con);
186 /* 1: set focused-pointer to the new con */
187 /* 2: exchange the position of the container in focus stack of the parent all the way up */
188 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
189 TAILQ_INSERT_HEAD(&(con->parent->focus_head), con, focused);
190 if (con->parent->parent != NULL)
191 con_focus(con->parent);
196 workspace_update_urgent_flag(con_get_workspace(con));
201 * Returns true when this node is a leaf node (has no children)
204 bool con_is_leaf(Con *con) {
205 return TAILQ_EMPTY(&(con->nodes_head));
209 * Returns true if this node accepts a window (if the node swallows windows,
210 * it might already have swallowed enough and cannot hold any more).
213 bool con_accepts_window(Con *con) {
214 /* 1: workspaces never accept direct windows */
215 if (con->type == CT_WORKSPACE)
218 if (con->orientation != NO_ORIENTATION) {
219 DLOG("container %p does not accepts windows, orientation != NO_ORIENTATION\n", con);
223 /* TODO: if this is a swallowing container, we need to check its max_clients */
224 return (con->window == NULL);
228 * Gets the output container (first container with CT_OUTPUT in hierarchy) this
232 Con *con_get_output(Con *con) {
234 while (result != NULL && result->type != CT_OUTPUT)
235 result = result->parent;
236 /* We must be able to get an output because focus can never be set higher
237 * in the tree (root node cannot be focused). */
238 assert(result != NULL);
243 * Gets the workspace container this node is on.
246 Con *con_get_workspace(Con *con) {
248 while (result != NULL && result->type != CT_WORKSPACE)
249 result = result->parent;
254 * Searches parenst of the given 'con' until it reaches one with the specified
255 * 'orientation'. Aborts when it comes across a floating_con.
258 Con *con_parent_with_orientation(Con *con, orientation_t orientation) {
259 DLOG("Searching for parent of Con %p with orientation %d\n", con, orientation);
260 Con *parent = con->parent;
261 if (parent->type == CT_FLOATING_CON)
263 while (con_orientation(parent) != orientation) {
264 DLOG("Need to go one level further up\n");
265 parent = parent->parent;
266 /* Abort when we reach a floating con */
267 if (parent && parent->type == CT_FLOATING_CON)
272 DLOG("Result: %p\n", parent);
277 * helper data structure for the breadth-first-search in
278 * con_get_fullscreen_con()
284 TAILQ_ENTRY(bfs_entry) entries;
288 * Returns the first fullscreen node below this node.
291 Con *con_get_fullscreen_con(Con *con, int fullscreen_mode) {
292 Con *current, *child;
294 /* TODO: is breadth-first-search really appropriate? (check as soon as
295 * fullscreen levels and fullscreen for containers is implemented) */
296 TAILQ_HEAD(bfs_head, bfs_entry) bfs_head = TAILQ_HEAD_INITIALIZER(bfs_head);
297 struct bfs_entry *entry = smalloc(sizeof(struct bfs_entry));
299 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
301 while (!TAILQ_EMPTY(&bfs_head)) {
302 entry = TAILQ_FIRST(&bfs_head);
303 current = entry->con;
304 if (current != con && current->fullscreen_mode == fullscreen_mode) {
305 /* empty the queue */
306 while (!TAILQ_EMPTY(&bfs_head)) {
307 entry = TAILQ_FIRST(&bfs_head);
308 TAILQ_REMOVE(&bfs_head, entry, entries);
314 TAILQ_REMOVE(&bfs_head, entry, entries);
317 TAILQ_FOREACH(child, &(current->nodes_head), nodes) {
318 entry = smalloc(sizeof(struct bfs_entry));
320 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
323 TAILQ_FOREACH(child, &(current->floating_head), floating_windows) {
324 entry = smalloc(sizeof(struct bfs_entry));
326 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
334 * Returns true if the node is floating.
337 bool con_is_floating(Con *con) {
339 DLOG("checking if con %p is floating\n", con);
340 return (con->floating >= FLOATING_AUTO_ON);
344 * Checks if the given container is either floating or inside some floating
345 * container. It returns the FLOATING_CON container.
348 Con *con_inside_floating(Con *con) {
350 if (con->type == CT_FLOATING_CON)
353 if (con->floating >= FLOATING_AUTO_ON)
356 if (con->type == CT_WORKSPACE || con->type == CT_OUTPUT)
359 return con_inside_floating(con->parent);
363 * Checks if the given container is inside a focused container.
366 bool con_inside_focused(Con *con) {
371 return con_inside_focused(con->parent);
375 * Returns the container with the given client window ID or NULL if no such
379 Con *con_by_window_id(xcb_window_t window) {
381 TAILQ_FOREACH(con, &all_cons, all_cons)
382 if (con->window != NULL && con->window->id == window)
388 * Returns the container with the given frame ID or NULL if no such container
392 Con *con_by_frame_id(xcb_window_t frame) {
394 TAILQ_FOREACH(con, &all_cons, all_cons)
395 if (con->frame == frame)
401 * Returns the first container below 'con' which wants to swallow this window
405 Con *con_for_window(Con *con, i3Window *window, Match **store_match) {
408 //DLOG("searching con for window %p starting at con %p\n", window, con);
409 //DLOG("class == %s\n", window->class_class);
411 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
412 TAILQ_FOREACH(match, &(child->swallow_head), matches) {
413 if (!match_matches_window(match, window))
415 if (store_match != NULL)
416 *store_match = match;
419 Con *result = con_for_window(child, window, store_match);
424 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) {
425 TAILQ_FOREACH(match, &(child->swallow_head), matches) {
426 if (!match_matches_window(match, window))
428 if (store_match != NULL)
429 *store_match = match;
432 Con *result = con_for_window(child, window, store_match);
441 * Returns the number of children of this container.
444 int con_num_children(Con *con) {
448 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
455 * Updates the percent attribute of the children of the given container. This
456 * function needs to be called when a window is added or removed from a
460 void con_fix_percent(Con *con) {
462 int children = con_num_children(con);
464 // calculate how much we have distributed and how many containers
465 // with a percentage set we have
467 int children_with_percent = 0;
468 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
469 if (child->percent > 0.0) {
470 total += child->percent;
471 ++children_with_percent;
475 // if there were children without a percentage set, set to a value that
476 // will make those children proportional to all others
477 if (children_with_percent != children) {
478 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
479 if (child->percent <= 0.0) {
480 if (children_with_percent == 0)
481 total += (child->percent = 1.0);
482 else total += (child->percent = total / children_with_percent);
487 // if we got a zero, just distribute the space equally, otherwise
488 // distribute according to the proportions we got
490 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
491 child->percent = 1.0 / children;
492 } else if (total != 1.0) {
493 TAILQ_FOREACH(child, &(con->nodes_head), nodes)
494 child->percent /= total;
499 * Toggles fullscreen mode for the given container. Fullscreen mode will not be
500 * entered when there already is a fullscreen container on this workspace.
503 void con_toggle_fullscreen(Con *con, int fullscreen_mode) {
504 Con *workspace, *fullscreen;
506 if (con->type == CT_WORKSPACE) {
507 DLOG("You cannot make a workspace fullscreen.\n");
511 DLOG("toggling fullscreen for %p / %s\n", con, con->name);
512 if (con->fullscreen_mode == CF_NONE) {
513 /* 1: check if there already is a fullscreen con */
514 if (fullscreen_mode == CF_GLOBAL)
515 fullscreen = con_get_fullscreen_con(croot, CF_GLOBAL);
517 workspace = con_get_workspace(con);
518 fullscreen = con_get_fullscreen_con(workspace, CF_OUTPUT);
520 if (fullscreen != NULL) {
521 LOG("Not entering fullscreen mode, container (%p/%s) "
522 "already is in fullscreen mode\n",
523 fullscreen, fullscreen->name);
524 goto update_netwm_state;
527 /* 2: enable fullscreen */
528 con->fullscreen_mode = fullscreen_mode;
530 /* 1: disable fullscreen */
531 con->fullscreen_mode = CF_NONE;
535 DLOG("mode now: %d\n", con->fullscreen_mode);
537 /* update _NET_WM_STATE if this container has a window */
538 /* TODO: when a window is assigned to a container which is already
539 * fullscreened, this state needs to be pushed to the client, too */
540 if (con->window == NULL)
544 unsigned int num = 0;
546 if (con->fullscreen_mode != CF_NONE)
547 values[num++] = A__NET_WM_STATE_FULLSCREEN;
549 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
550 A__NET_WM_STATE, XCB_ATOM_ATOM, 32, num, values);
554 * Moves the given container to the currently focused container on the given
557 * The fix_coordinates flag will translate the current coordinates (offset from
558 * the monitor position basically) to appropriate coordinates on the
559 * destination workspace.
560 * Not enabling this behaviour comes in handy when this function gets called by
561 * floating_maybe_reassign_ws, which will only "move" a floating window when it
562 * *already* changed its coordinates to a different output.
564 * The dont_warp flag disables pointer warping and will be set when this
565 * function is called while dragging a floating window.
567 * TODO: is there a better place for this function?
570 void con_move_to_workspace(Con *con, Con *workspace, bool fix_coordinates, bool dont_warp) {
571 if (con->type == CT_WORKSPACE) {
572 DLOG("Moving workspaces is not yet implemented.\n");
576 if (con_is_floating(con)) {
577 DLOG("Using FLOATINGCON instead\n");
581 Con *source_output = con_get_output(con),
582 *dest_output = con_get_output(workspace);
584 /* 1: save the container which is going to be focused after the current
585 * container is moved away */
586 Con *focus_next = con_next_focused(con);
588 /* 2: get the focused container of this workspace */
589 Con *next = con_descend_focused(workspace);
591 /* 3: we go up one level, but only when next is a normal container */
592 if (next->type != CT_WORKSPACE) {
593 DLOG("next originally = %p / %s / type %d\n", next, next->name, next->type);
597 /* 4: if the target container is floating, we get the workspace instead.
598 * Only tiling windows need to get inserted next to the current container.
600 Con *floatingcon = con_inside_floating(next);
601 if (floatingcon != NULL) {
602 DLOG("floatingcon, going up even further\n");
603 next = floatingcon->parent;
606 if (con->type == CT_FLOATING_CON) {
607 Con *ws = con_get_workspace(next);
608 DLOG("This is a floating window, using workspace %p / %s\n", ws, ws->name);
612 if (source_output != dest_output) {
613 /* Take the relative coordinates of the current output, then add them
614 * to the coordinate space of the correct output */
615 if (fix_coordinates && con->type == CT_FLOATING_CON) {
616 DLOG("Floating window, fixing coordinates\n");
617 /* First we get the x/y coordinates relative to the x/y coordinates
618 * of the output on which the window is on */
619 uint32_t rel_x = (con->rect.x - source_output->rect.x);
620 uint32_t rel_y = (con->rect.y - source_output->rect.y);
621 /* Then we calculate a fraction, for example 0.63 for a window
622 * which is at y = 1212 of a 1920 px high output */
623 double fraction_x = ((double)rel_x / source_output->rect.width);
624 double fraction_y = ((double)rel_y / source_output->rect.height);
625 DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n",
626 rel_x, rel_y, fraction_x, fraction_y, source_output->rect.width, source_output->rect.height);
627 con->rect.x = dest_output->rect.x + (fraction_x * dest_output->rect.width);
628 con->rect.y = dest_output->rect.y + (fraction_y * dest_output->rect.height);
629 DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y);
630 } else DLOG("Not fixing coordinates, fix_coordinates flag = %d\n", fix_coordinates);
632 /* If moving to a visible workspace, call show so it can be considered
633 * focused. Must do before attaching because workspace_show checks to see
634 * if focused container is in its area. */
635 if (workspace_is_visible(workspace)) {
636 workspace_show(workspace);
638 /* Don’t warp if told so (when dragging floating windows with the
639 * mouse for example) */
643 x_set_warp_to(&(con->rect));
647 DLOG("Re-attaching container to %p / %s\n", next, next->name);
648 /* 5: re-attach the con to the parent of this focused container */
649 Con *parent = con->parent;
651 con_attach(con, next, false);
653 /* 6: fix the percentages */
654 con_fix_percent(parent);
656 con_fix_percent(next);
658 /* 7: focus the con on the target workspace (the X focus is only updated by
659 * calling tree_render(), so for the "real" focus this is a no-op). */
660 if (workspace->name[0] != '_' || workspace->name[1] != '_')
661 con_focus(con_descend_focused(con));
663 /* 8: when moving to a visible workspace on a different output, we keep the
664 * con focused. Otherwise, we leave the focus on the current workspace as we
665 * don’t want to focus invisible workspaces */
666 if (source_output != dest_output &&
667 workspace_is_visible(workspace)) {
668 DLOG("Moved to a different output, focusing target\n");
670 /* Descend focus stack in case focus_next is a workspace which can
671 * occur if we move to the same workspace. Also show current workspace
672 * to ensure it is focused. */
673 workspace_show(con_get_workspace(focus_next));
674 con_focus(con_descend_focused(focus_next));
677 CALL(parent, on_remove_child);
681 * Returns the orientation of the given container (for stacked containers,
682 * vertical orientation is used regardless of the actual orientation of the
686 int con_orientation(Con *con) {
687 /* stacking containers behave like they are in vertical orientation */
688 if (con->layout == L_STACKED)
691 if (con->layout == L_TABBED)
694 return con->orientation;
698 * Returns the container which will be focused next when the given container
699 * is not available anymore. Called in tree_close and con_move_to_workspace
700 * to properly restore focus.
703 Con *con_next_focused(Con *con) {
705 /* floating containers are attached to a workspace, so we focus either the
706 * next floating container (if any) or the workspace itself. */
707 if (con->type == CT_FLOATING_CON) {
708 DLOG("selecting next for CT_FLOATING_CON\n");
709 next = TAILQ_NEXT(con, floating_windows);
710 DLOG("next = %p\n", next);
712 next = TAILQ_PREV(con, floating_head, floating_windows);
713 DLOG("using prev, next = %p\n", next);
716 Con *ws = con_get_workspace(con);
718 DLOG("no more floating containers for next = %p, restoring workspace focus\n", next);
719 while (next != TAILQ_END(&(ws->focus_head)) && !TAILQ_EMPTY(&(next->focus_head))) {
720 next = TAILQ_FIRST(&(next->focus_head));
722 DLOG("skipping container itself, we want the next client\n");
723 next = TAILQ_NEXT(next, focused);
726 if (next == TAILQ_END(&(ws->focus_head))) {
727 DLOG("Focus list empty, returning ws\n");
731 /* Instead of returning the next CT_FLOATING_CON, we descend it to
732 * get an actual window to focus. */
733 next = con_descend_focused(next);
738 /* dock clients cannot be focused, so we focus the workspace instead */
739 if (con->parent->type == CT_DOCKAREA) {
740 DLOG("selecting workspace for dock client\n");
741 return con_descend_focused(output_get_content(con->parent->parent));
744 /* if 'con' is not the first entry in the focus stack, use the first one as
745 * it’s currently focused already */
746 Con *first = TAILQ_FIRST(&(con->parent->focus_head));
748 DLOG("Using first entry %p\n", first);
751 /* try to focus the next container on the same level as this one or fall
752 * back to its parent */
753 if (!(next = TAILQ_NEXT(con, focused)))
757 /* now go down the focus stack as far as
758 * possible, excluding the current container */
759 while (!TAILQ_EMPTY(&(next->focus_head)) &&
760 TAILQ_FIRST(&(next->focus_head)) != con)
761 next = TAILQ_FIRST(&(next->focus_head));
767 * Get the next/previous container in the specified orientation. This may
768 * travel up until it finds a container with suitable orientation.
771 Con *con_get_next(Con *con, char way, orientation_t orientation) {
772 DLOG("con_get_next(way=%c, orientation=%d)\n", way, orientation);
773 /* 1: get the first parent with the same orientation */
775 while (con_orientation(cur->parent) != orientation) {
776 DLOG("need to go one level further up\n");
777 if (cur->parent->type == CT_WORKSPACE) {
778 LOG("that's a workspace, we can't go further up\n");
784 /* 2: chose next (or previous) */
787 next = TAILQ_NEXT(cur, nodes);
788 /* if we are at the end of the list, we need to wrap */
789 if (next == TAILQ_END(&(parent->nodes_head)))
792 next = TAILQ_PREV(cur, nodes_head, nodes);
793 /* if we are at the end of the list, we need to wrap */
794 if (next == TAILQ_END(&(cur->nodes_head)))
797 DLOG("next = %p\n", next);
803 * Returns the focused con inside this client, descending the tree as far as
804 * possible. This comes in handy when attaching a con to a workspace at the
805 * currently focused position, for example.
808 Con *con_descend_focused(Con *con) {
810 while (!TAILQ_EMPTY(&(next->focus_head)))
811 next = TAILQ_FIRST(&(next->focus_head));
816 * Returns the focused con inside this client, descending the tree as far as
817 * possible. This comes in handy when attaching a con to a workspace at the
818 * currently focused position, for example.
820 * Works like con_descend_focused but considers only tiling cons.
823 Con *con_descend_tiling_focused(Con *con) {
829 TAILQ_FOREACH(child, &(next->focus_head), focused) {
830 if (child->type == CT_FLOATING_CON)
836 } while (before != next);
841 * Returns the leftmost, rightmost, etc. container in sub-tree. For example, if
842 * direction is D_LEFT, then we return the rightmost container and if direction
843 * is D_RIGHT, we return the leftmost container. This is because if we are
844 * moving D_LEFT, and thus want the rightmost container.
847 Con *con_descend_direction(Con *con, direction_t direction) {
849 int orientation = con_orientation(con);
850 DLOG("con_descend_direction(%p, orientation %d, direction %d)\n", con, orientation, direction);
851 if (direction == D_LEFT || direction == D_RIGHT) {
852 if (orientation == HORIZ) {
853 /* If the direction is horizontal, we can use either the first
854 * (D_RIGHT) or the last con (D_LEFT) */
855 if (direction == D_RIGHT)
856 most = TAILQ_FIRST(&(con->nodes_head));
857 else most = TAILQ_LAST(&(con->nodes_head), nodes_head);
858 } else if (orientation == VERT) {
859 /* Wrong orientation. We use the last focused con. Within that con,
860 * we recurse to chose the left/right con or at least the last
862 most = TAILQ_FIRST(&(con->focus_head));
864 /* If the con has no orientation set, it’s not a split container
865 * but a container with a client window, so stop recursing */
870 if (direction == D_UP || direction == D_DOWN) {
871 if (orientation == VERT) {
872 /* If the direction is vertical, we can use either the first
873 * (D_DOWN) or the last con (D_UP) */
874 if (direction == D_UP)
875 most = TAILQ_LAST(&(con->nodes_head), nodes_head);
876 else most = TAILQ_FIRST(&(con->nodes_head));
877 } else if (orientation == HORIZ) {
878 /* Wrong orientation. We use the last focused con. Within that con,
879 * we recurse to chose the top/bottom con or at least the last
881 most = TAILQ_FIRST(&(con->focus_head));
883 /* If the con has no orientation set, it’s not a split container
884 * but a container with a client window, so stop recursing */
891 return con_descend_direction(most, direction);
895 * Returns a "relative" Rect which contains the amount of pixels that need to
896 * be added to the original Rect to get the final position (obviously the
897 * amount of pixels for normal, 1pixel and borderless are different).
900 Rect con_border_style_rect(Con *con) {
901 switch (con_border_style(con)) {
903 return (Rect){2, 0, -(2 * 2), -2};
906 return (Rect){1, 1, -2, -2};
909 return (Rect){0, 0, 0, 0};
917 * Use this function to get a container’s border style. This is important
918 * because when inside a stack, the border style is always BS_NORMAL.
919 * For tabbed mode, the same applies, with one exception: when the container is
920 * borderless and the only element in the tabbed container, the border is not
923 * For children of a CT_DOCKAREA, the border style is always none.
926 int con_border_style(Con *con) {
927 Con *fs = con_get_fullscreen_con(con->parent, CF_OUTPUT);
929 DLOG("this one is fullscreen! overriding BS_NONE\n");
933 if (con->parent->layout == L_STACKED)
934 return (con_num_children(con->parent) == 1 ? con->border_style : BS_NORMAL);
936 if (con->parent->layout == L_TABBED && con->border_style != BS_NORMAL)
937 return (con_num_children(con->parent) == 1 ? con->border_style : BS_NORMAL);
939 if (con->parent->type == CT_DOCKAREA)
942 return con->border_style;
946 * Sets the given border style on con, correctly keeping the position/size of a
950 void con_set_border_style(Con *con, int border_style) {
951 /* Handle the simple case: non-floating containerns */
952 if (!con_is_floating(con)) {
953 con->border_style = border_style;
957 /* For floating containers, we want to keep the position/size of the
958 * *window* itself. We first add the border pixels to con->rect to make
959 * con->rect represent the absolute position of the window. Then, we change
960 * the border and subtract the new border pixels. Afterwards, we update
961 * parent->rect to contain con. */
962 DLOG("This is a floating container\n");
964 Rect bsr = con_border_style_rect(con);
965 con->rect.x += bsr.x;
966 con->rect.y += bsr.y;
967 con->rect.width += bsr.width;
968 con->rect.height += bsr.height;
970 /* Change the border style, get new border/decoration values. */
971 con->border_style = border_style;
972 bsr = con_border_style_rect(con);
974 (con->border_style == BS_NORMAL ? config.font.height + 5 : 0);
976 con->rect.x -= bsr.x;
977 con->rect.y -= bsr.y;
978 con->rect.width -= bsr.width;
979 con->rect.height -= bsr.height;
981 Con *parent = con->parent;
982 parent->rect.x = con->rect.x;
983 parent->rect.y = con->rect.y - deco_height;
984 parent->rect.width = con->rect.width;
985 parent->rect.height = con->rect.height + deco_height;
989 * This function changes the layout of a given container. Use it to handle
990 * special cases like changing a whole workspace to stacked/tabbed (creates a
991 * new split container before).
994 void con_set_layout(Con *con, int layout) {
995 /* When the container type is CT_WORKSPACE, the user wants to change the
996 * whole workspace into stacked/tabbed mode. To do this and still allow
997 * intuitive operations (like level-up and then opening a new window), we
998 * need to create a new split container. */
999 if (con->type == CT_WORKSPACE) {
1000 DLOG("Creating new split container\n");
1001 /* 1: create a new split container */
1002 Con *new = con_new(NULL, NULL);
1005 /* 2: set the requested layout on the split con */
1006 new->layout = layout;
1008 /* 3: While the layout is irrelevant in stacked/tabbed mode, it needs
1009 * to be set. Otherwise, this con will not be interpreted as a split
1011 if (config.default_orientation == NO_ORIENTATION) {
1012 new->orientation = (con->rect.height > con->rect.width) ? VERT : HORIZ;
1014 new->orientation = config.default_orientation;
1017 Con *old_focused = TAILQ_FIRST(&(con->focus_head));
1018 if (old_focused == TAILQ_END(&(con->focus_head)))
1021 /* 4: move the existing cons of this workspace below the new con */
1022 DLOG("Moving cons\n");
1024 while (!TAILQ_EMPTY(&(con->nodes_head))) {
1025 child = TAILQ_FIRST(&(con->nodes_head));
1027 con_attach(child, new, true);
1030 /* 4: attach the new split container to the workspace */
1031 DLOG("Attaching new split to ws\n");
1032 con_attach(new, con, false);
1035 con_focus(old_focused);
1037 tree_flatten(croot);
1042 con->layout = layout;
1046 * Callback which will be called when removing a child from the given con.
1047 * Kills the container if it is empty and replaces it with the child if there
1048 * is exactly one child.
1051 static void con_on_remove_child(Con *con) {
1052 DLOG("on_remove_child\n");
1054 /* Every container 'above' (in the hierarchy) the workspace content should
1055 * not be closed when the last child was removed */
1056 if (con->type == CT_OUTPUT ||
1057 con->type == CT_ROOT ||
1058 con->type == CT_DOCKAREA) {
1059 DLOG("not handling, type = %d\n", con->type);
1063 /* For workspaces, close them only if they're not visible anymore */
1064 if (con->type == CT_WORKSPACE) {
1065 if (TAILQ_EMPTY(&(con->focus_head)) && !workspace_is_visible(con)) {
1066 LOG("Closing old workspace (%p / %s), it is empty\n", con, con->name);
1067 tree_close(con, DONT_KILL_WINDOW, false, false);
1068 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}");
1073 /* TODO: check if this container would swallow any other client and
1074 * don’t close it automatically. */
1075 int children = con_num_children(con);
1076 if (children == 0) {
1077 DLOG("Container empty, closing\n");
1078 tree_close(con, DONT_KILL_WINDOW, false, false);
1084 * Determines the minimum size of the given con by looking at its children (for
1085 * split/stacked/tabbed cons). Will be called when resizing floating cons
1088 Rect con_minimum_size(Con *con) {
1089 DLOG("Determining minimum size for con %p\n", con);
1091 if (con_is_leaf(con)) {
1092 DLOG("leaf node, returning 75x50\n");
1093 return (Rect){ 0, 0, 75, 50 };
1096 if (con->type == CT_FLOATING_CON) {
1097 DLOG("floating con\n");
1098 Con *child = TAILQ_FIRST(&(con->nodes_head));
1099 return con_minimum_size(child);
1102 if (con->layout == L_STACKED || con->layout == L_TABBED) {
1103 uint32_t max_width = 0, max_height = 0, deco_height = 0;
1105 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1106 Rect min = con_minimum_size(child);
1107 deco_height += child->deco_rect.height;
1108 max_width = max(max_width, min.width);
1109 max_height = max(max_height, min.height);
1111 DLOG("stacked/tabbed now, returning %d x %d + deco_rect = %d\n",
1112 max_width, max_height, deco_height);
1113 return (Rect){ 0, 0, max_width, max_height + deco_height };
1116 /* For horizontal/vertical split containers we sum up the width (h-split)
1117 * or height (v-split) and use the maximum of the height (h-split) or width
1118 * (v-split) as minimum size. */
1119 if (con->orientation == HORIZ || con->orientation == VERT) {
1120 uint32_t width = 0, height = 0;
1122 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
1123 Rect min = con_minimum_size(child);
1124 if (con->orientation == HORIZ) {
1126 height = max(height, min.height);
1128 height += min.height;
1129 width = max(width, min.width);
1132 DLOG("split container, returning width = %d x height = %d\n", width, height);
1133 return (Rect){ 0, 0, width, height };
1136 ELOG("Unhandled case, type = %d, layout = %d, orientation = %d\n",
1137 con->type, con->layout, con->orientation);