1 /*
2 * vim:ts=4:sw=4:expandtab
3 *
4 * i3 - an improved dynamic tiling window manager
5 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
6 *
7 * con.c: Functions which deal with containers directly (creating containers,
8 * searching containers, getting specific properties from containers,
9 * …).
10 *
11 */
12 #include "all.h"
13 #include "yajl_utils.h"
14
15 static void con_on_remove_child(Con *con);
16
17 /*
18 * force parent split containers to be redrawn
19 *
20 */
con_force_split_parents_redraw(Con * con)21 void con_force_split_parents_redraw(Con *con) {
22 Con *parent = con;
23
24 while (parent != NULL && parent->type != CT_WORKSPACE && parent->type != CT_DOCKAREA) {
25 if (!con_is_leaf(parent)) {
26 FREE(parent->deco_render_params);
27 }
28
29 parent = parent->parent;
30 }
31 }
32
33 /*
34 * Create a new container (and attach it to the given parent, if not NULL).
35 * This function only initializes the data structures.
36 *
37 */
con_new_skeleton(Con * parent,i3Window * window)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);
42 new->type = CT_CON;
43 new->window = window;
44 new->border_style = config.default_border;
45 new->current_border_width = -1;
46 new->window_icon_padding = -1;
47 if (window) {
48 new->depth = window->depth;
49 } else {
50 new->depth = root_depth;
51 }
52 DLOG("opening window\n");
53
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));
59
60 if (parent != NULL)
61 con_attach(new, parent, false);
62
63 return new;
64 }
65
66 /* A wrapper for con_new_skeleton, to retain the old con_new behaviour
67 *
68 */
con_new(Con * parent,i3Window * window)69 Con *con_new(Con *parent, i3Window *window) {
70 Con *new = con_new_skeleton(parent, window);
71 x_con_init(new);
72 return new;
73 }
74
75 /*
76 * Frees the specified container.
77 *
78 */
con_free(Con * con)79 void con_free(Con *con) {
80 free(con->name);
81 FREE(con->deco_render_params);
82 TAILQ_REMOVE(&all_cons, con, all_cons);
83 while (!TAILQ_EMPTY(&(con->swallow_head))) {
84 Match *match = TAILQ_FIRST(&(con->swallow_head));
85 TAILQ_REMOVE(&(con->swallow_head), match, matches);
86 match_free(match);
87 free(match);
88 }
89 while (!TAILQ_EMPTY(&(con->marks_head))) {
90 mark_t *mark = TAILQ_FIRST(&(con->marks_head));
91 TAILQ_REMOVE(&(con->marks_head), mark, marks);
92 FREE(mark->name);
93 FREE(mark);
94 }
95 DLOG("con %p freed\n", con);
96 free(con);
97 }
98
_con_attach(Con * con,Con * parent,Con * previous,bool ignore_focus)99 static void _con_attach(Con *con, Con *parent, Con *previous, bool ignore_focus) {
100 con->parent = parent;
101 Con *loop;
102 Con *current = previous;
103 struct nodes_head *nodes_head = &(parent->nodes_head);
104 struct focus_head *focus_head = &(parent->focus_head);
105
106 /* Workspaces are handled differently: they need to be inserted at the
107 * right position. */
108 if (con->type == CT_WORKSPACE) {
109 DLOG("it's a workspace. num = %d\n", con->num);
110 if (con->num == -1 || TAILQ_EMPTY(nodes_head)) {
111 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
112 } else {
113 current = TAILQ_FIRST(nodes_head);
114 if (con->num < current->num) {
115 /* we need to insert the container at the beginning */
116 TAILQ_INSERT_HEAD(nodes_head, con, nodes);
117 } else {
118 while (current->num != -1 && con->num > current->num) {
119 current = TAILQ_NEXT(current, nodes);
120 if (current == TAILQ_END(nodes_head)) {
121 current = NULL;
122 break;
123 }
124 }
125 /* we need to insert con after current, if current is not NULL */
126 if (current)
127 TAILQ_INSERT_BEFORE(current, con, nodes);
128 else
129 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
130 }
131 }
132 goto add_to_focus_head;
133 }
134
135 if (parent->type == CT_DOCKAREA) {
136 /* Insert dock client, sorting alphanumerically by class and then
137 * instance name. This makes dock client order deterministic. As a side
138 * effect, bars without a custom bar id will be sorted according to
139 * their declaration order in the config file. See #3491. */
140 current = NULL;
141 TAILQ_FOREACH (loop, nodes_head, nodes) {
142 int result = strcasecmp_nullable(con->window->class_class, loop->window->class_class);
143 if (result == 0) {
144 result = strcasecmp_nullable(con->window->class_instance, loop->window->class_instance);
145 }
146 if (result < 0) {
147 current = loop;
148 break;
149 }
150 }
151 if (current) {
152 TAILQ_INSERT_BEFORE(loop, con, nodes);
153 } else {
154 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
155 }
156 goto add_to_focus_head;
157 }
158
159 if (con->type == CT_FLOATING_CON) {
160 DLOG("Inserting into floating containers\n");
161 TAILQ_INSERT_TAIL(&(parent->floating_head), con, floating_windows);
162 } else {
163 if (!ignore_focus) {
164 /* Get the first tiling container in focus stack */
165 TAILQ_FOREACH (loop, &(parent->focus_head), focused) {
166 if (loop->type == CT_FLOATING_CON)
167 continue;
168 current = loop;
169 break;
170 }
171 }
172
173 /* When the container is not a split container (but contains a window)
174 * and is attached to a workspace, we check if the user configured a
175 * workspace_layout. This is done in workspace_attach_to, which will
176 * provide us with the container to which we should attach (either the
177 * workspace or a new split container with the configured
178 * workspace_layout).
179 */
180 if (con->window != NULL &&
181 parent->type == CT_WORKSPACE &&
182 parent->workspace_layout != L_DEFAULT) {
183 DLOG("Parent is a workspace. Applying default layout...\n");
184 Con *target = workspace_attach_to(parent);
185
186 /* Attach the original con to this new split con instead */
187 nodes_head = &(target->nodes_head);
188 focus_head = &(target->focus_head);
189 con->parent = target;
190 current = NULL;
191
192 DLOG("done\n");
193 }
194
195 /* Insert the container after the tiling container, if found.
196 * When adding to a CT_OUTPUT, just append one after another. */
197 if (current != NULL && parent->type != CT_OUTPUT) {
198 DLOG("Inserting con = %p after con %p\n", con, current);
199 TAILQ_INSERT_AFTER(nodes_head, current, con, nodes);
200 } else
201 TAILQ_INSERT_TAIL(nodes_head, con, nodes);
202 }
203
204 add_to_focus_head:
205 /* We insert to the TAIL because con_focus() will correct this.
206 * This way, we have the option to insert Cons without having
207 * to focus them. */
208 TAILQ_INSERT_TAIL(focus_head, con, focused);
209 con_force_split_parents_redraw(con);
210 }
211
212 /*
213 * Attaches the given container to the given parent. This happens when moving
214 * a container or when inserting a new container at a specific place in the
215 * tree.
216 *
217 * ignore_focus is to just insert the Con at the end (useful when creating a
218 * new split container *around* some containers, that is, detaching and
219 * attaching them in order without wanting to mess with the focus in between).
220 *
221 */
con_attach(Con * con,Con * parent,bool ignore_focus)222 void con_attach(Con *con, Con *parent, bool ignore_focus) {
223 _con_attach(con, parent, NULL, ignore_focus);
224 }
225
226 /*
227 * Detaches the given container from its current parent
228 *
229 */
con_detach(Con * con)230 void con_detach(Con *con) {
231 con_force_split_parents_redraw(con);
232 if (con->type == CT_FLOATING_CON) {
233 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
234 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
235 } else {
236 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
237 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
238 }
239 }
240
241 /*
242 * Sets input focus to the given container. Will be updated in X11 in the next
243 * run of x_push_changes().
244 *
245 */
con_focus(Con * con)246 void con_focus(Con *con) {
247 assert(con != NULL);
248 DLOG("con_focus = %p\n", con);
249
250 /* 1: set focused-pointer to the new con */
251 /* 2: exchange the position of the container in focus stack of the parent all the way up */
252 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
253 TAILQ_INSERT_HEAD(&(con->parent->focus_head), con, focused);
254 if (con->parent->parent != NULL)
255 con_focus(con->parent);
256
257 focused = con;
258 /* We can't blindly reset non-leaf containers since they might have
259 * other urgent children. Therefore we only reset leafs and propagate
260 * the changes upwards via con_update_parents_urgency() which does proper
261 * checks before resetting the urgency.
262 */
263 if (con->urgent && con_is_leaf(con)) {
264 con_set_urgency(con, false);
265 con_update_parents_urgency(con);
266 workspace_update_urgent_flag(con_get_workspace(con));
267 ipc_send_window_event("urgent", con);
268 }
269 }
270
271 /*
272 * Raise container to the top if it is floating or inside some floating
273 * container.
274 *
275 */
con_raise(Con * con)276 static void con_raise(Con *con) {
277 Con *floating = con_inside_floating(con);
278 if (floating) {
279 floating_raise_con(floating);
280 }
281 }
282
283 /*
284 * Sets input focus to the given container and raises it to the top.
285 *
286 */
con_activate(Con * con)287 void con_activate(Con *con) {
288 con_focus(con);
289 con_raise(con);
290 }
291
292 /*
293 * Activates the container like in con_activate but removes fullscreen
294 * restrictions and properly warps the pointer if needed.
295 *
296 */
con_activate_unblock(Con * con)297 void con_activate_unblock(Con *con) {
298 Con *ws = con_get_workspace(con);
299 Con *previous_focus = focused;
300 Con *fullscreen_on_ws = con_get_fullscreen_covering_ws(ws);
301
302 if (fullscreen_on_ws && fullscreen_on_ws != con && !con_has_parent(con, fullscreen_on_ws)) {
303 con_disable_fullscreen(fullscreen_on_ws);
304 }
305
306 con_activate(con);
307
308 /* If the container is not on the current workspace, workspace_show() will
309 * switch to a different workspace and (if enabled) trigger a mouse pointer
310 * warp to the currently focused container (!) on the target workspace.
311 *
312 * Therefore, before calling workspace_show(), we make sure that 'con' will
313 * be focused on the workspace. However, we cannot just con_focus(con)
314 * because then the pointer will not be warped at all (the code thinks we
315 * are already there).
316 *
317 * So we focus 'con' to make it the currently focused window of the target
318 * workspace, then revert focus. */
319 if (ws != con_get_workspace(previous_focus)) {
320 con_activate(previous_focus);
321 /* Now switch to the workspace, then focus */
322 workspace_show(ws);
323 con_activate(con);
324 }
325 }
326
327 /*
328 * Closes the given container.
329 *
330 */
con_close(Con * con,kill_window_t kill_window)331 void con_close(Con *con, kill_window_t kill_window) {
332 assert(con != NULL);
333 DLOG("Closing con = %p.\n", con);
334
335 /* We never close output or root containers. */
336 if (con->type == CT_OUTPUT || con->type == CT_ROOT) {
337 DLOG("con = %p is of type %d, not closing anything.\n", con, con->type);
338 return;
339 }
340
341 if (con->type == CT_WORKSPACE) {
342 DLOG("con = %p is a workspace, closing all children instead.\n", con);
343 Con *child, *nextchild;
344 for (child = TAILQ_FIRST(&(con->focus_head)); child;) {
345 nextchild = TAILQ_NEXT(child, focused);
346 DLOG("killing child = %p.\n", child);
347 tree_close_internal(child, kill_window, false);
348 child = nextchild;
349 }
350
351 return;
352 }
353
354 tree_close_internal(con, kill_window, false);
355 }
356
357 /*
358 * Returns true when this node is a leaf node (has no children)
359 *
360 */
con_is_leaf(Con * con)361 bool con_is_leaf(Con *con) {
362 return TAILQ_EMPTY(&(con->nodes_head));
363 }
364
365 /*
366 * Returns true when this con is a leaf node with a managed X11 window (e.g.,
367 * excluding dock containers)
368 */
con_has_managed_window(Con * con)369 bool con_has_managed_window(Con *con) {
370 return (con != NULL && con->window != NULL && con->window->id != XCB_WINDOW_NONE && con_get_workspace(con) != NULL);
371 }
372
373 /*
374 * Returns true if this node has regular or floating children.
375 *
376 */
con_has_children(Con * con)377 bool con_has_children(Con *con) {
378 return (!con_is_leaf(con) || !TAILQ_EMPTY(&(con->floating_head)));
379 }
380
381 /*
382 * Returns true if a container should be considered split.
383 *
384 */
con_is_split(Con * con)385 bool con_is_split(Con *con) {
386 if (con_is_leaf(con))
387 return false;
388
389 switch (con->layout) {
390 case L_DOCKAREA:
391 case L_OUTPUT:
392 return false;
393
394 default:
395 return true;
396 }
397 }
398
399 /*
400 * This will only return true for containers which have some parent with
401 * a tabbed / stacked parent of which they are not the currently focused child.
402 *
403 */
con_is_hidden(Con * con)404 bool con_is_hidden(Con *con) {
405 Con *current = con;
406
407 /* ascend to the workspace level and memorize the highest-up container
408 * which is stacked or tabbed. */
409 while (current != NULL && current->type != CT_WORKSPACE) {
410 Con *parent = current->parent;
411 if (parent != NULL && (parent->layout == L_TABBED || parent->layout == L_STACKED)) {
412 if (TAILQ_FIRST(&(parent->focus_head)) != current)
413 return true;
414 }
415
416 current = parent;
417 }
418
419 return false;
420 }
421
422 /*
423 * Returns whether the container or any of its children is sticky.
424 *
425 */
con_is_sticky(Con * con)426 bool con_is_sticky(Con *con) {
427 if (con->sticky)
428 return true;
429
430 Con *child;
431 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
432 if (con_is_sticky(child))
433 return true;
434 }
435
436 return false;
437 }
438
439 /*
440 * Returns true if this node accepts a window (if the node swallows windows,
441 * it might already have swallowed enough and cannot hold any more).
442 *
443 */
con_accepts_window(Con * con)444 bool con_accepts_window(Con *con) {
445 /* 1: workspaces never accept direct windows */
446 if (con->type == CT_WORKSPACE)
447 return false;
448
449 if (con_is_split(con)) {
450 DLOG("container %p does not accept windows, it is a split container.\n", con);
451 return false;
452 }
453
454 /* TODO: if this is a swallowing container, we need to check its max_clients */
455 return (con->window == NULL);
456 }
457
458 /*
459 * Gets the output container (first container with CT_OUTPUT in hierarchy) this
460 * node is on.
461 *
462 */
con_get_output(Con * con)463 Con *con_get_output(Con *con) {
464 Con *result = con;
465 while (result != NULL && result->type != CT_OUTPUT)
466 result = result->parent;
467 /* We must be able to get an output because focus can never be set higher
468 * in the tree (root node cannot be focused). */
469 assert(result != NULL);
470 return result;
471 }
472
473 /*
474 * Gets the workspace container this node is on.
475 *
476 */
con_get_workspace(Con * con)477 Con *con_get_workspace(Con *con) {
478 Con *result = con;
479 while (result != NULL && result->type != CT_WORKSPACE)
480 result = result->parent;
481 return result;
482 }
483
484 /*
485 * Searches parents of the given 'con' until it reaches one with the specified
486 * 'orientation'. Aborts when it comes across a floating_con.
487 *
488 */
con_parent_with_orientation(Con * con,orientation_t orientation)489 Con *con_parent_with_orientation(Con *con, orientation_t orientation) {
490 DLOG("Searching for parent of Con %p with orientation %d\n", con, orientation);
491 Con *parent = con->parent;
492 if (parent->type == CT_FLOATING_CON)
493 return NULL;
494 while (con_orientation(parent) != orientation) {
495 DLOG("Need to go one level further up\n");
496 parent = parent->parent;
497 /* Abort when we reach a floating con, or an output con */
498 if (parent &&
499 (parent->type == CT_FLOATING_CON ||
500 parent->type == CT_OUTPUT ||
501 (parent->parent && parent->parent->type == CT_OUTPUT)))
502 parent = NULL;
503 if (parent == NULL)
504 break;
505 }
506 DLOG("Result: %p\n", parent);
507 return parent;
508 }
509
510 /*
511 * helper data structure for the breadth-first-search in
512 * con_get_fullscreen_con()
513 *
514 */
515 struct bfs_entry {
516 Con *con;
517
518 TAILQ_ENTRY(bfs_entry) entries;
519 };
520
521 /*
522 * Returns the first fullscreen node below this node.
523 *
524 */
con_get_fullscreen_con(Con * con,fullscreen_mode_t fullscreen_mode)525 Con *con_get_fullscreen_con(Con *con, fullscreen_mode_t fullscreen_mode) {
526 Con *current, *child;
527
528 /* TODO: is breadth-first-search really appropriate? (check as soon as
529 * fullscreen levels and fullscreen for containers is implemented) */
530 TAILQ_HEAD(bfs_head, bfs_entry) bfs_head = TAILQ_HEAD_INITIALIZER(bfs_head);
531 struct bfs_entry *entry = smalloc(sizeof(struct bfs_entry));
532 entry->con = con;
533 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
534
535 while (!TAILQ_EMPTY(&bfs_head)) {
536 entry = TAILQ_FIRST(&bfs_head);
537 current = entry->con;
538 if (current != con && current->fullscreen_mode == fullscreen_mode) {
539 /* empty the queue */
540 while (!TAILQ_EMPTY(&bfs_head)) {
541 entry = TAILQ_FIRST(&bfs_head);
542 TAILQ_REMOVE(&bfs_head, entry, entries);
543 free(entry);
544 }
545 return current;
546 }
547
548 TAILQ_REMOVE(&bfs_head, entry, entries);
549 free(entry);
550
551 TAILQ_FOREACH (child, &(current->nodes_head), nodes) {
552 entry = smalloc(sizeof(struct bfs_entry));
553 entry->con = child;
554 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
555 }
556
557 TAILQ_FOREACH (child, &(current->floating_head), floating_windows) {
558 entry = smalloc(sizeof(struct bfs_entry));
559 entry->con = child;
560 TAILQ_INSERT_TAIL(&bfs_head, entry, entries);
561 }
562 }
563
564 return NULL;
565 }
566
567 /*
568 * Returns the fullscreen node that covers the given workspace if it exists.
569 * This is either a CF_GLOBAL fullscreen container anywhere or a CF_OUTPUT
570 * fullscreen container in the workspace.
571 *
572 */
con_get_fullscreen_covering_ws(Con * ws)573 Con *con_get_fullscreen_covering_ws(Con *ws) {
574 if (!ws) {
575 return NULL;
576 }
577 Con *fs = con_get_fullscreen_con(croot, CF_GLOBAL);
578 if (!fs) {
579 return con_get_fullscreen_con(ws, CF_OUTPUT);
580 }
581 return fs;
582 }
583
584 /*
585 * Returns true if the container is internal, such as __i3_scratch
586 *
587 */
con_is_internal(Con * con)588 bool con_is_internal(Con *con) {
589 return (con->name[0] == '_' && con->name[1] == '_');
590 }
591
592 /*
593 * Returns true if the node is floating.
594 *
595 */
con_is_floating(Con * con)596 bool con_is_floating(Con *con) {
597 assert(con != NULL);
598 return (con->floating >= FLOATING_AUTO_ON);
599 }
600
601 /*
602 * Returns true if the container is a docked container.
603 *
604 */
con_is_docked(Con * con)605 bool con_is_docked(Con *con) {
606 if (con->parent == NULL)
607 return false;
608
609 if (con->parent->type == CT_DOCKAREA)
610 return true;
611
612 return con_is_docked(con->parent);
613 }
614
615 /*
616 * Checks if the given container is either floating or inside some floating
617 * container. It returns the FLOATING_CON container.
618 *
619 */
con_inside_floating(Con * con)620 Con *con_inside_floating(Con *con) {
621 assert(con != NULL);
622 if (con->type == CT_FLOATING_CON)
623 return con;
624
625 if (con->floating >= FLOATING_AUTO_ON)
626 return con->parent;
627
628 if (con->type == CT_WORKSPACE || con->type == CT_OUTPUT)
629 return NULL;
630
631 return con_inside_floating(con->parent);
632 }
633
634 /*
635 * Checks if the given container is inside a focused container.
636 *
637 */
con_inside_focused(Con * con)638 bool con_inside_focused(Con *con) {
639 if (con == focused)
640 return true;
641 if (!con->parent)
642 return false;
643 return con_inside_focused(con->parent);
644 }
645
646 /*
647 * Checks if the container has the given parent as an actual parent.
648 *
649 */
con_has_parent(Con * con,Con * parent)650 bool con_has_parent(Con *con, Con *parent) {
651 Con *current = con->parent;
652 if (current == NULL) {
653 return false;
654 }
655
656 if (current == parent) {
657 return true;
658 }
659
660 return con_has_parent(current, parent);
661 }
662
663 /*
664 * Returns the container with the given client window ID or NULL if no such
665 * container exists.
666 *
667 */
con_by_window_id(xcb_window_t window)668 Con *con_by_window_id(xcb_window_t window) {
669 Con *con;
670 TAILQ_FOREACH (con, &all_cons, all_cons) {
671 if (con->window != NULL && con->window->id == window) {
672 return con;
673 }
674 }
675 return NULL;
676 }
677
678 /*
679 * Returns the container with the given container ID or NULL if no such
680 * container exists.
681 *
682 */
con_by_con_id(long target)683 Con *con_by_con_id(long target) {
684 Con *con;
685 TAILQ_FOREACH (con, &all_cons, all_cons) {
686 if (con == (Con *)target) {
687 return con;
688 }
689 }
690
691 return NULL;
692 }
693
694 /*
695 * Returns true if the given container (still) exists.
696 * This can be used, e.g., to make sure a container hasn't been closed in the meantime.
697 *
698 */
con_exists(Con * con)699 bool con_exists(Con *con) {
700 return con_by_con_id((long)con) != NULL;
701 }
702
703 /*
704 * Returns the container with the given frame ID or NULL if no such container
705 * exists.
706 *
707 */
con_by_frame_id(xcb_window_t frame)708 Con *con_by_frame_id(xcb_window_t frame) {
709 Con *con;
710 TAILQ_FOREACH (con, &all_cons, all_cons) {
711 if (con->frame.id == frame) {
712 return con;
713 }
714 }
715 return NULL;
716 }
717
718 /*
719 * Returns the container with the given mark or NULL if no such container
720 * exists.
721 *
722 */
con_by_mark(const char * mark)723 Con *con_by_mark(const char *mark) {
724 Con *con;
725 TAILQ_FOREACH (con, &all_cons, all_cons) {
726 if (con_has_mark(con, mark))
727 return con;
728 }
729
730 return NULL;
731 }
732
733 /*
734 * Returns true if and only if the given containers holds the mark.
735 *
736 */
con_has_mark(Con * con,const char * mark)737 bool con_has_mark(Con *con, const char *mark) {
738 mark_t *current;
739 TAILQ_FOREACH (current, &(con->marks_head), marks) {
740 if (strcmp(current->name, mark) == 0)
741 return true;
742 }
743
744 return false;
745 }
746
747 /*
748 * Toggles the mark on a container.
749 * If the container already has this mark, the mark is removed.
750 * Otherwise, the mark is assigned to the container.
751 *
752 */
con_mark_toggle(Con * con,const char * mark,mark_mode_t mode)753 void con_mark_toggle(Con *con, const char *mark, mark_mode_t mode) {
754 assert(con != NULL);
755 DLOG("Toggling mark \"%s\" on con = %p.\n", mark, con);
756
757 if (con_has_mark(con, mark)) {
758 con_unmark(con, mark);
759 } else {
760 con_mark(con, mark, mode);
761 }
762 }
763
764 /*
765 * Assigns a mark to the container.
766 *
767 */
con_mark(Con * con,const char * mark,mark_mode_t mode)768 void con_mark(Con *con, const char *mark, mark_mode_t mode) {
769 assert(con != NULL);
770 DLOG("Setting mark \"%s\" on con = %p.\n", mark, con);
771
772 con_unmark(NULL, mark);
773 if (mode == MM_REPLACE) {
774 DLOG("Removing all existing marks on con = %p.\n", con);
775
776 mark_t *current;
777 while (!TAILQ_EMPTY(&(con->marks_head))) {
778 current = TAILQ_FIRST(&(con->marks_head));
779 con_unmark(con, current->name);
780 }
781 }
782
783 mark_t *new = scalloc(1, sizeof(mark_t));
784 new->name = sstrdup(mark);
785 TAILQ_INSERT_TAIL(&(con->marks_head), new, marks);
786 ipc_send_window_event("mark", con);
787
788 con->mark_changed = true;
789 }
790
791 /*
792 * Removes marks from containers.
793 * If con is NULL, all containers are considered.
794 * If name is NULL, this removes all existing marks.
795 * Otherwise, it will only remove the given mark (if it is present).
796 *
797 */
con_unmark(Con * con,const char * name)798 void con_unmark(Con *con, const char *name) {
799 Con *current;
800 if (name == NULL) {
801 DLOG("Unmarking all containers.\n");
802 TAILQ_FOREACH (current, &all_cons, all_cons) {
803 if (con != NULL && current != con)
804 continue;
805
806 if (TAILQ_EMPTY(&(current->marks_head)))
807 continue;
808
809 mark_t *mark;
810 while (!TAILQ_EMPTY(&(current->marks_head))) {
811 mark = TAILQ_FIRST(&(current->marks_head));
812 FREE(mark->name);
813 TAILQ_REMOVE(&(current->marks_head), mark, marks);
814 FREE(mark);
815
816 ipc_send_window_event("mark", current);
817 }
818
819 current->mark_changed = true;
820 }
821 } else {
822 DLOG("Removing mark \"%s\".\n", name);
823 current = (con == NULL) ? con_by_mark(name) : con;
824 if (current == NULL) {
825 DLOG("No container found with this mark, so there is nothing to do.\n");
826 return;
827 }
828
829 DLOG("Found mark on con = %p. Removing it now.\n", current);
830 current->mark_changed = true;
831
832 mark_t *mark;
833 TAILQ_FOREACH (mark, &(current->marks_head), marks) {
834 if (strcmp(mark->name, name) != 0)
835 continue;
836
837 FREE(mark->name);
838 TAILQ_REMOVE(&(current->marks_head), mark, marks);
839 FREE(mark);
840
841 ipc_send_window_event("mark", current);
842 break;
843 }
844 }
845 }
846
847 /*
848 * Returns the first container below 'con' which wants to swallow this window
849 * TODO: priority
850 *
851 */
con_for_window(Con * con,i3Window * window,Match ** store_match)852 Con *con_for_window(Con *con, i3Window *window, Match **store_match) {
853 Con *child;
854 Match *match;
855 //DLOG("searching con for window %p starting at con %p\n", window, con);
856 //DLOG("class == %s\n", window->class_class);
857
858 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
859 TAILQ_FOREACH (match, &(child->swallow_head), matches) {
860 if (!match_matches_window(match, window))
861 continue;
862 if (store_match != NULL)
863 *store_match = match;
864 return child;
865 }
866 Con *result = con_for_window(child, window, store_match);
867 if (result != NULL)
868 return result;
869 }
870
871 TAILQ_FOREACH (child, &(con->floating_head), floating_windows) {
872 TAILQ_FOREACH (match, &(child->swallow_head), matches) {
873 if (!match_matches_window(match, window))
874 continue;
875 if (store_match != NULL)
876 *store_match = match;
877 return child;
878 }
879 Con *result = con_for_window(child, window, store_match);
880 if (result != NULL)
881 return result;
882 }
883
884 return NULL;
885 }
886
num_focus_heads(Con * con)887 static int num_focus_heads(Con *con) {
888 int focus_heads = 0;
889
890 Con *current;
891 TAILQ_FOREACH (current, &(con->focus_head), focused) {
892 focus_heads++;
893 }
894
895 return focus_heads;
896 }
897
898 /*
899 * Iterate over the container's focus stack and return an array with the
900 * containers inside it, ordered from higher focus order to lowest.
901 *
902 */
get_focus_order(Con * con)903 Con **get_focus_order(Con *con) {
904 const int focus_heads = num_focus_heads(con);
905 Con **focus_order = smalloc(focus_heads * sizeof(Con *));
906 Con *current;
907 int idx = 0;
908 TAILQ_FOREACH (current, &(con->focus_head), focused) {
909 assert(idx < focus_heads);
910 focus_order[idx++] = current;
911 }
912
913 return focus_order;
914 }
915
916 /*
917 * Clear the container's focus stack and re-add it using the provided container
918 * array. The function doesn't check if the provided array contains the same
919 * containers with the previous focus stack but will not add floating containers
920 * in the new focus stack if container is not a workspace.
921 *
922 */
set_focus_order(Con * con,Con ** focus_order)923 void set_focus_order(Con *con, Con **focus_order) {
924 int focus_heads = 0;
925 while (!TAILQ_EMPTY(&(con->focus_head))) {
926 Con *current = TAILQ_FIRST(&(con->focus_head));
927
928 TAILQ_REMOVE(&(con->focus_head), current, focused);
929 focus_heads++;
930 }
931
932 for (int idx = 0; idx < focus_heads; idx++) {
933 /* Useful when encapsulating a workspace. */
934 if (con->type != CT_WORKSPACE && con_inside_floating(focus_order[idx])) {
935 focus_heads++;
936 continue;
937 }
938
939 TAILQ_INSERT_TAIL(&(con->focus_head), focus_order[idx], focused);
940 }
941 }
942
943 /*
944 * Returns the number of children of this container.
945 *
946 */
con_num_children(Con * con)947 int con_num_children(Con *con) {
948 Con *child;
949 int children = 0;
950
951 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
952 children++;
953 }
954
955 return children;
956 }
957
958 /*
959 * Returns the number of visible non-floating children of this container.
960 * For example, if the container contains a hsplit which has two children,
961 * this will return 2 instead of 1.
962 */
con_num_visible_children(Con * con)963 int con_num_visible_children(Con *con) {
964 if (con == NULL)
965 return 0;
966
967 int children = 0;
968 Con *current = NULL;
969 TAILQ_FOREACH (current, &(con->nodes_head), nodes) {
970 /* Visible leaf nodes are a child. */
971 if (!con_is_hidden(current) && con_is_leaf(current))
972 children++;
973 /* All other containers need to be recursed. */
974 else
975 children += con_num_visible_children(current);
976 }
977
978 return children;
979 }
980
981 /*
982 * Count the number of windows (i.e., leaf containers).
983 *
984 */
con_num_windows(Con * con)985 int con_num_windows(Con *con) {
986 if (con == NULL)
987 return 0;
988
989 if (con_has_managed_window(con))
990 return 1;
991
992 int num = 0;
993 Con *current = NULL;
994 TAILQ_FOREACH (current, &(con->nodes_head), nodes) {
995 num += con_num_windows(current);
996 }
997
998 TAILQ_FOREACH (current, &(con->floating_head), floating_windows) {
999 num += con_num_windows(current);
1000 }
1001
1002 return num;
1003 }
1004
1005 /*
1006 * Updates the percent attribute of the children of the given container. This
1007 * function needs to be called when a window is added or removed from a
1008 * container.
1009 *
1010 */
con_fix_percent(Con * con)1011 void con_fix_percent(Con *con) {
1012 Con *child;
1013 int children = con_num_children(con);
1014
1015 // calculate how much we have distributed and how many containers
1016 // with a percentage set we have
1017 double total = 0.0;
1018 int children_with_percent = 0;
1019 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
1020 if (child->percent > 0.0) {
1021 total += child->percent;
1022 ++children_with_percent;
1023 }
1024 }
1025
1026 // if there were children without a percentage set, set to a value that
1027 // will make those children proportional to all others
1028 if (children_with_percent != children) {
1029 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
1030 if (child->percent <= 0.0) {
1031 if (children_with_percent == 0) {
1032 total += (child->percent = 1.0);
1033 } else {
1034 total += (child->percent = total / children_with_percent);
1035 }
1036 }
1037 }
1038 }
1039
1040 // if we got a zero, just distribute the space equally, otherwise
1041 // distribute according to the proportions we got
1042 if (total == 0.0) {
1043 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
1044 child->percent = 1.0 / children;
1045 }
1046 } else if (total != 1.0) {
1047 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
1048 child->percent /= total;
1049 }
1050 }
1051 }
1052
1053 /*
1054 * Toggles fullscreen mode for the given container. If there already is a
1055 * fullscreen container on this workspace, fullscreen will be disabled and then
1056 * enabled for the container the user wants to have in fullscreen mode.
1057 *
1058 */
con_toggle_fullscreen(Con * con,int fullscreen_mode)1059 void con_toggle_fullscreen(Con *con, int fullscreen_mode) {
1060 if (con->type == CT_WORKSPACE) {
1061 DLOG("You cannot make a workspace fullscreen.\n");
1062 return;
1063 }
1064
1065 DLOG("toggling fullscreen for %p / %s\n", con, con->name);
1066
1067 if (con->fullscreen_mode == CF_NONE)
1068 con_enable_fullscreen(con, fullscreen_mode);
1069 else
1070 con_disable_fullscreen(con);
1071 }
1072
1073 /*
1074 * Sets the specified fullscreen mode for the given container, sends the
1075 * “fullscreen_mode” event and changes the XCB fullscreen property of the
1076 * container’s window, if any.
1077 *
1078 */
con_set_fullscreen_mode(Con * con,fullscreen_mode_t fullscreen_mode)1079 static void con_set_fullscreen_mode(Con *con, fullscreen_mode_t fullscreen_mode) {
1080 con->fullscreen_mode = fullscreen_mode;
1081
1082 DLOG("mode now: %d\n", con->fullscreen_mode);
1083
1084 /* Send an ipc window "fullscreen_mode" event */
1085 ipc_send_window_event("fullscreen_mode", con);
1086
1087 /* update _NET_WM_STATE if this container has a window */
1088 /* TODO: when a window is assigned to a container which is already
1089 * fullscreened, this state needs to be pushed to the client, too */
1090 if (con->window == NULL)
1091 return;
1092
1093 if (con->fullscreen_mode != CF_NONE) {
1094 DLOG("Setting _NET_WM_STATE_FULLSCREEN for con = %p / window = %d.\n", con, con->window->id);
1095 xcb_add_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_FULLSCREEN);
1096 } else {
1097 DLOG("Removing _NET_WM_STATE_FULLSCREEN for con = %p / window = %d.\n", con, con->window->id);
1098 xcb_remove_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_FULLSCREEN);
1099 }
1100 }
1101
1102 /*
1103 * Enables fullscreen mode for the given container, if necessary.
1104 *
1105 * If the container’s mode is already CF_OUTPUT or CF_GLOBAL, the container is
1106 * kept fullscreen but its mode is set to CF_GLOBAL and CF_OUTPUT,
1107 * respectively.
1108 *
1109 * Other fullscreen containers will be disabled first, if they hide the new
1110 * one.
1111 *
1112 */
con_enable_fullscreen(Con * con,fullscreen_mode_t fullscreen_mode)1113 void con_enable_fullscreen(Con *con, fullscreen_mode_t fullscreen_mode) {
1114 if (con->type == CT_WORKSPACE) {
1115 DLOG("You cannot make a workspace fullscreen.\n");
1116 return;
1117 }
1118
1119 assert(fullscreen_mode == CF_GLOBAL || fullscreen_mode == CF_OUTPUT);
1120
1121 if (fullscreen_mode == CF_GLOBAL)
1122 DLOG("enabling global fullscreen for %p / %s\n", con, con->name);
1123 else
1124 DLOG("enabling fullscreen for %p / %s\n", con, con->name);
1125
1126 if (con->fullscreen_mode == fullscreen_mode) {
1127 DLOG("fullscreen already enabled for %p / %s\n", con, con->name);
1128 return;
1129 }
1130
1131 Con *con_ws = con_get_workspace(con);
1132
1133 /* Disable any fullscreen container that would conflict the new one. */
1134 Con *fullscreen = con_get_fullscreen_con(croot, CF_GLOBAL);
1135 if (fullscreen == NULL)
1136 fullscreen = con_get_fullscreen_con(con_ws, CF_OUTPUT);
1137 if (fullscreen != NULL)
1138 con_disable_fullscreen(fullscreen);
1139
1140 /* Set focus to new fullscreen container. Unless in global fullscreen mode
1141 * and on another workspace restore focus afterwards.
1142 * Switch to the container’s workspace if mode is global. */
1143 Con *cur_ws = con_get_workspace(focused);
1144 Con *old_focused = focused;
1145 if (fullscreen_mode == CF_GLOBAL && cur_ws != con_ws)
1146 workspace_show(con_ws);
1147 con_activate(con);
1148 if (fullscreen_mode != CF_GLOBAL && cur_ws != con_ws)
1149 con_activate(old_focused);
1150
1151 con_set_fullscreen_mode(con, fullscreen_mode);
1152 }
1153
1154 /*
1155 * Disables fullscreen mode for the given container regardless of the mode, if
1156 * necessary.
1157 *
1158 */
con_disable_fullscreen(Con * con)1159 void con_disable_fullscreen(Con *con) {
1160 if (con->type == CT_WORKSPACE) {
1161 DLOG("You cannot make a workspace fullscreen.\n");
1162 return;
1163 }
1164
1165 DLOG("disabling fullscreen for %p / %s\n", con, con->name);
1166
1167 if (con->fullscreen_mode == CF_NONE) {
1168 DLOG("fullscreen already disabled for %p / %s\n", con, con->name);
1169 return;
1170 }
1171
1172 con_set_fullscreen_mode(con, CF_NONE);
1173 }
1174
_con_move_to_con(Con * con,Con * target,bool behind_focused,bool fix_coordinates,bool dont_warp,bool ignore_focus,bool fix_percentage)1175 static bool _con_move_to_con(Con *con, Con *target, bool behind_focused, bool fix_coordinates, bool dont_warp, bool ignore_focus, bool fix_percentage) {
1176 Con *orig_target = target;
1177
1178 /* Prevent moving if this would violate the fullscreen focus restrictions. */
1179 Con *target_ws = con_get_workspace(target);
1180 if (!ignore_focus && !con_fullscreen_permits_focusing(target_ws)) {
1181 LOG("Cannot move out of a fullscreen container.\n");
1182 return false;
1183 }
1184
1185 if (con_is_floating(con)) {
1186 DLOG("Container is floating, using parent instead.\n");
1187 con = con->parent;
1188 }
1189
1190 Con *source_ws = con_get_workspace(con);
1191
1192 if (con->type == CT_WORKSPACE) {
1193 /* Re-parent all of the old workspace's floating windows. */
1194 Con *child;
1195 while (!TAILQ_EMPTY(&(source_ws->floating_head))) {
1196 child = TAILQ_FIRST(&(source_ws->floating_head));
1197 con_move_to_workspace(child, target_ws, true, true, false);
1198 }
1199
1200 /* If there are no non-floating children, ignore the workspace. */
1201 if (con_is_leaf(con))
1202 return false;
1203
1204 con = workspace_encapsulate(con);
1205 if (con == NULL) {
1206 ELOG("Workspace failed to move its contents into a container!\n");
1207 return false;
1208 }
1209 }
1210
1211 /* Save the urgency state so that we can restore it. */
1212 bool urgent = con->urgent;
1213
1214 /* Save the current workspace. So we can call workspace_show() by the end
1215 * of this function. */
1216 Con *current_ws = con_get_workspace(focused);
1217
1218 Con *source_output = con_get_output(con),
1219 *dest_output = con_get_output(target_ws);
1220
1221 /* 1: save the container which is going to be focused after the current
1222 * container is moved away */
1223 Con *focus_next = NULL;
1224 if (!ignore_focus && source_ws == current_ws && target_ws != source_ws) {
1225 focus_next = con_descend_focused(source_ws);
1226 if (focus_next == con || con_has_parent(focus_next, con)) {
1227 focus_next = con_next_focused(con);
1228 }
1229 }
1230
1231 /* 2: we go up one level, but only when target is a normal container */
1232 if (target->type != CT_WORKSPACE) {
1233 DLOG("target originally = %p / %s / type %d\n", target, target->name, target->type);
1234 target = target->parent;
1235 }
1236
1237 /* 3: if the original target is the direct child of a floating container, we
1238 * can't move con next to it - floating containers have only one child - so
1239 * we get the workspace instead. */
1240 if (target->type == CT_FLOATING_CON) {
1241 DLOG("floatingcon, going up even further\n");
1242 orig_target = target;
1243 target = target->parent;
1244 }
1245
1246 if (con->type == CT_FLOATING_CON) {
1247 Con *ws = con_get_workspace(target);
1248 DLOG("This is a floating window, using workspace %p / %s\n", ws, ws->name);
1249 target = ws;
1250 }
1251
1252 if (source_output != dest_output) {
1253 /* Take the relative coordinates of the current output, then add them
1254 * to the coordinate space of the correct output */
1255 if (fix_coordinates && con->type == CT_FLOATING_CON) {
1256 floating_fix_coordinates(con, &(source_output->rect), &(dest_output->rect));
1257 } else
1258 DLOG("Not fixing coordinates, fix_coordinates flag = %d\n", fix_coordinates);
1259 }
1260
1261 /* If moving a fullscreen container and the destination already has a
1262 * fullscreen window on it, un-fullscreen the target's fullscreen con.
1263 * con->fullscreen_mode is not enough in some edge cases:
1264 * 1. con is CT_FLOATING_CON, child is fullscreen.
1265 * 2. con is the parent of a fullscreen container, can be triggered by
1266 * moving the parent with command criteria.
1267 */
1268 Con *fullscreen = con_get_fullscreen_con(target_ws, CF_OUTPUT);
1269 const bool con_has_fullscreen = con->fullscreen_mode != CF_NONE ||
1270 con_get_fullscreen_con(con, CF_GLOBAL) ||
1271 con_get_fullscreen_con(con, CF_OUTPUT);
1272 if (con_has_fullscreen && fullscreen != NULL) {
1273 con_toggle_fullscreen(fullscreen, CF_OUTPUT);
1274 fullscreen = NULL;
1275 }
1276
1277 DLOG("Re-attaching container to %p / %s\n", target, target->name);
1278 /* 4: re-attach the con to the parent of this focused container */
1279 Con *parent = con->parent;
1280 con_detach(con);
1281 _con_attach(con, target, behind_focused ? NULL : orig_target, !behind_focused);
1282
1283 /* 5: fix the percentages */
1284 if (fix_percentage) {
1285 con_fix_percent(parent);
1286 con->percent = 0.0;
1287 con_fix_percent(target);
1288 }
1289
1290 /* 6: focus the con on the target workspace, but only within that
1291 * workspace, that is, don’t move focus away if the target workspace is
1292 * invisible.
1293 * We don’t focus the con for i3 pseudo workspaces like __i3_scratch and
1294 * we don’t focus when there is a fullscreen con on that workspace. We
1295 * also don't do it if the caller requested to ignore focus. */
1296 if (!ignore_focus && !con_is_internal(target_ws) && !fullscreen) {
1297 /* We need to save the focused workspace on the output in case the
1298 * new workspace is hidden and it's necessary to immediately switch
1299 * back to the originally-focused workspace. */
1300 Con *old_focus_ws = TAILQ_FIRST(&(output_get_content(dest_output)->focus_head));
1301 Con *old_focus = focused;
1302 con_activate(con_descend_focused(con));
1303
1304 if (old_focus_ws == current_ws && old_focus->type != CT_WORKSPACE) {
1305 /* Restore focus to the currently focused container. */
1306 con_activate(old_focus);
1307 } else if (con_get_workspace(focused) != old_focus_ws) {
1308 /* Restore focus if the output's focused workspace has changed. */
1309 con_focus(con_descend_focused(old_focus_ws));
1310 }
1311 }
1312
1313 /* 7: when moving to another workspace, we leave the focus on the current
1314 * workspace. (see also #809) */
1315 if (!ignore_focus) {
1316 workspace_show(current_ws);
1317 if (dont_warp) {
1318 DLOG("x_set_warp_to(NULL) because dont_warp is set\n");
1319 x_set_warp_to(NULL);
1320 }
1321 }
1322
1323 /* Set focus only if con was on current workspace before moving.
1324 * Otherwise we would give focus to some window on different workspace. */
1325 if (focus_next)
1326 con_activate(con_descend_focused(focus_next));
1327
1328 /* 8. If anything within the container is associated with a startup sequence,
1329 * delete it so child windows won't be created on the old workspace. */
1330 if (!con_is_leaf(con)) {
1331 Con *child;
1332 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
1333 if (!child->window)
1334 continue;
1335 startup_sequence_delete_by_window(child->window);
1336 }
1337 }
1338
1339 if (con->window) {
1340 startup_sequence_delete_by_window(con->window);
1341 }
1342
1343 /* 9. If the container was marked urgent, move the urgency hint. */
1344 if (urgent) {
1345 workspace_update_urgent_flag(source_ws);
1346 con_set_urgency(con, true);
1347 }
1348
1349 /* Ensure the container will be redrawn. */
1350 FREE(con->deco_render_params);
1351
1352 CALL(parent, on_remove_child);
1353
1354 ipc_send_window_event("move", con);
1355 ewmh_update_wm_desktop();
1356 return true;
1357 }
1358
1359 /*
1360 * Moves the given container to the given mark.
1361 *
1362 */
con_move_to_mark(Con * con,const char * mark)1363 bool con_move_to_mark(Con *con, const char *mark) {
1364 Con *target = con_by_mark(mark);
1365 if (target == NULL) {
1366 DLOG("found no container with mark \"%s\"\n", mark);
1367 return false;
1368 }
1369
1370 /* For target containers in the scratchpad, we just send the window to the scratchpad. */
1371 if (con_get_workspace(target) == workspace_get("__i3_scratch")) {
1372 DLOG("target container is in the scratchpad, moving container to scratchpad.\n");
1373 scratchpad_move(con);
1374 return true;
1375 }
1376
1377 /* For floating target containers, we just send the window to the same workspace. */
1378 if (con_is_floating(target)) {
1379 DLOG("target container is floating, moving container to target's workspace.\n");
1380 con_move_to_workspace(con, con_get_workspace(target), true, false, false);
1381 return true;
1382 }
1383
1384 if (target->type == CT_WORKSPACE && con_is_leaf(target)) {
1385 DLOG("target container is an empty workspace, simply moving the container there.\n");
1386 con_move_to_workspace(con, target, true, false, false);
1387 return true;
1388 }
1389
1390 /* For split containers, we use the currently focused container within it.
1391 * This allows setting marks on, e.g., tabbed containers which will move
1392 * con to a new tab behind the focused tab. */
1393 if (con_is_split(target)) {
1394 DLOG("target is a split container, descending to the currently focused child.\n");
1395 target = TAILQ_FIRST(&(target->focus_head));
1396 }
1397
1398 if (con == target || con_has_parent(target, con)) {
1399 DLOG("cannot move the container to or inside itself, aborting.\n");
1400 return false;
1401 }
1402
1403 return _con_move_to_con(con, target, false, true, false, false, true);
1404 }
1405
1406 /*
1407 * Moves the given container to the currently focused container on the given
1408 * workspace.
1409 *
1410 * The fix_coordinates flag will translate the current coordinates (offset from
1411 * the monitor position basically) to appropriate coordinates on the
1412 * destination workspace.
1413 * Not enabling this behaviour comes in handy when this function gets called by
1414 * floating_maybe_reassign_ws, which will only "move" a floating window when it
1415 * *already* changed its coordinates to a different output.
1416 *
1417 * The dont_warp flag disables pointer warping and will be set when this
1418 * function is called while dragging a floating window.
1419 *
1420 * If ignore_focus is set, the container will be moved without modifying focus
1421 * at all.
1422 *
1423 * TODO: is there a better place for this function?
1424 *
1425 */
con_move_to_workspace(Con * con,Con * workspace,bool fix_coordinates,bool dont_warp,bool ignore_focus)1426 void con_move_to_workspace(Con *con, Con *workspace, bool fix_coordinates, bool dont_warp, bool ignore_focus) {
1427 assert(workspace->type == CT_WORKSPACE);
1428
1429 Con *source_ws = con_get_workspace(con);
1430 if (workspace == source_ws) {
1431 DLOG("Not moving, already there\n");
1432 return;
1433 }
1434
1435 Con *target = con_descend_focused(workspace);
1436 _con_move_to_con(con, target, true, fix_coordinates, dont_warp, ignore_focus, true);
1437 }
1438
1439 /*
1440 * Moves the given container to the currently focused container on the
1441 * visible workspace on the given output.
1442 *
1443 */
con_move_to_output(Con * con,Output * output,bool fix_coordinates)1444 void con_move_to_output(Con *con, Output *output, bool fix_coordinates) {
1445 Con *ws = NULL;
1446 GREP_FIRST(ws, output_get_content(output->con), workspace_is_visible(child));
1447 assert(ws != NULL);
1448 DLOG("Moving con %p to output %s\n", con, output_primary_name(output));
1449 con_move_to_workspace(con, ws, fix_coordinates, false, false);
1450 }
1451
1452 /*
1453 * Moves the given container to the currently focused container on the
1454 * visible workspace on the output specified by the given name.
1455 * The current output for the container is used to resolve relative names
1456 * such as left, right, up, down.
1457 *
1458 */
con_move_to_output_name(Con * con,const char * name,bool fix_coordinates)1459 bool con_move_to_output_name(Con *con, const char *name, bool fix_coordinates) {
1460 Output *current_output = get_output_for_con(con);
1461 Output *output = get_output_from_string(current_output, name);
1462 if (output == NULL) {
1463 ELOG("Could not find output \"%s\"\n", name);
1464 return false;
1465 }
1466
1467 con_move_to_output(con, output, fix_coordinates);
1468 return true;
1469 }
1470
1471 /*
1472 * Returns the orientation of the given container (for stacked containers,
1473 * vertical orientation is used regardless of the actual orientation of the
1474 * container).
1475 *
1476 */
con_orientation(Con * con)1477 orientation_t con_orientation(Con *con) {
1478 switch (con->layout) {
1479 case L_SPLITV:
1480 /* stacking containers behave like they are in vertical orientation */
1481 case L_STACKED:
1482 return VERT;
1483
1484 case L_SPLITH:
1485 /* tabbed containers behave like they are in vertical orientation */
1486 case L_TABBED:
1487 return HORIZ;
1488
1489 case L_DEFAULT:
1490 ELOG("Someone called con_orientation() on a con with L_DEFAULT, this is a bug in the code.\n");
1491 assert(false);
1492
1493 case L_DOCKAREA:
1494 case L_OUTPUT:
1495 ELOG("con_orientation() called on dockarea/output (%d) container %p\n", con->layout, con);
1496 assert(false);
1497 }
1498 /* should not be reached */
1499 assert(false);
1500 }
1501
1502 /*
1503 * Returns the container which will be focused next when the given container
1504 * is not available anymore. Called in tree_close_internal and con_move_to_workspace
1505 * to properly restore focus.
1506 *
1507 */
con_next_focused(Con * con)1508 Con *con_next_focused(Con *con) {
1509 /* dock clients cannot be focused, so we focus the workspace instead */
1510 if (con->parent->type == CT_DOCKAREA) {
1511 DLOG("selecting workspace for dock client\n");
1512 return con_descend_focused(output_get_content(con->parent->parent));
1513 }
1514 if (con_is_floating(con)) {
1515 con = con->parent;
1516 }
1517
1518 /* if 'con' is not the first entry in the focus stack, use the first one as
1519 * it’s currently focused already */
1520 Con *next = TAILQ_FIRST(&(con->parent->focus_head));
1521 if (next != con) {
1522 DLOG("Using first entry %p\n", next);
1523 } else {
1524 /* try to focus the next container on the same level as this one or fall
1525 * back to its parent */
1526 if (!(next = TAILQ_NEXT(con, focused))) {
1527 next = con->parent;
1528 }
1529 }
1530
1531 /* now go down the focus stack as far as
1532 * possible, excluding the current container */
1533 while (!TAILQ_EMPTY(&(next->focus_head)) && TAILQ_FIRST(&(next->focus_head)) != con) {
1534 next = TAILQ_FIRST(&(next->focus_head));
1535 }
1536
1537 if (con->type == CT_FLOATING_CON && next != con->parent) {
1538 next = con_descend_focused(next);
1539 }
1540
1541 return next;
1542 }
1543
1544 /*
1545 * Returns the focused con inside this client, descending the tree as far as
1546 * possible. This comes in handy when attaching a con to a workspace at the
1547 * currently focused position, for example.
1548 *
1549 */
con_descend_focused(Con * con)1550 Con *con_descend_focused(Con *con) {
1551 Con *next = con;
1552 while (next != focused && !TAILQ_EMPTY(&(next->focus_head)))
1553 next = TAILQ_FIRST(&(next->focus_head));
1554 return next;
1555 }
1556
1557 /*
1558 * Returns the focused con inside this client, descending the tree as far as
1559 * possible. This comes in handy when attaching a con to a workspace at the
1560 * currently focused position, for example.
1561 *
1562 * Works like con_descend_focused but considers only tiling cons.
1563 *
1564 */
con_descend_tiling_focused(Con * con)1565 Con *con_descend_tiling_focused(Con *con) {
1566 Con *next = con;
1567 Con *before;
1568 Con *child;
1569 if (next == focused)
1570 return next;
1571 do {
1572 before = next;
1573 TAILQ_FOREACH (child, &(next->focus_head), focused) {
1574 if (child->type == CT_FLOATING_CON)
1575 continue;
1576
1577 next = child;
1578 break;
1579 }
1580 } while (before != next && next != focused);
1581 return next;
1582 }
1583
1584 /*
1585 * Returns the leftmost, rightmost, etc. container in sub-tree. For example, if
1586 * direction is D_LEFT, then we return the rightmost container and if direction
1587 * is D_RIGHT, we return the leftmost container. This is because if we are
1588 * moving D_LEFT, and thus want the rightmost container.
1589 *
1590 */
con_descend_direction(Con * con,direction_t direction)1591 Con *con_descend_direction(Con *con, direction_t direction) {
1592 Con *most = NULL;
1593 Con *current;
1594 int orientation = con_orientation(con);
1595 DLOG("con_descend_direction(%p, orientation %d, direction %d)\n", con, orientation, direction);
1596 if (direction == D_LEFT || direction == D_RIGHT) {
1597 if (orientation == HORIZ) {
1598 /* If the direction is horizontal, we can use either the first
1599 * (D_RIGHT) or the last con (D_LEFT) */
1600 if (direction == D_RIGHT)
1601 most = TAILQ_FIRST(&(con->nodes_head));
1602 else
1603 most = TAILQ_LAST(&(con->nodes_head), nodes_head);
1604 } else if (orientation == VERT) {
1605 /* Wrong orientation. We use the last focused con. Within that con,
1606 * we recurse to chose the left/right con or at least the last
1607 * focused one. */
1608 TAILQ_FOREACH (current, &(con->focus_head), focused) {
1609 if (current->type != CT_FLOATING_CON) {
1610 most = current;
1611 break;
1612 }
1613 }
1614 } else {
1615 /* If the con has no orientation set, it’s not a split container
1616 * but a container with a client window, so stop recursing */
1617 return con;
1618 }
1619 }
1620
1621 if (direction == D_UP || direction == D_DOWN) {
1622 if (orientation == VERT) {
1623 /* If the direction is vertical, we can use either the first
1624 * (D_DOWN) or the last con (D_UP) */
1625 if (direction == D_UP)
1626 most = TAILQ_LAST(&(con->nodes_head), nodes_head);
1627 else
1628 most = TAILQ_FIRST(&(con->nodes_head));
1629 } else if (orientation == HORIZ) {
1630 /* Wrong orientation. We use the last focused con. Within that con,
1631 * we recurse to chose the top/bottom con or at least the last
1632 * focused one. */
1633 TAILQ_FOREACH (current, &(con->focus_head), focused) {
1634 if (current->type != CT_FLOATING_CON) {
1635 most = current;
1636 break;
1637 }
1638 }
1639 } else {
1640 /* If the con has no orientation set, it’s not a split container
1641 * but a container with a client window, so stop recursing */
1642 return con;
1643 }
1644 }
1645
1646 if (!most)
1647 return con;
1648 return con_descend_direction(most, direction);
1649 }
1650
1651 /*
1652 * Returns a "relative" Rect which contains the amount of pixels that need to
1653 * be added to the original Rect to get the final position (obviously the
1654 * amount of pixels for normal, 1pixel and borderless are different).
1655 *
1656 */
con_border_style_rect(Con * con)1657 Rect con_border_style_rect(Con *con) {
1658 if (config.hide_edge_borders == HEBM_SMART && con_num_visible_children(con_get_workspace(con)) <= 1) {
1659 if (!con_is_floating(con)) {
1660 return (Rect){0, 0, 0, 0};
1661 }
1662 }
1663
1664 adjacent_t borders_to_hide = ADJ_NONE;
1665 int border_width = con->current_border_width;
1666 DLOG("The border width for con is set to: %d\n", con->current_border_width);
1667 Rect result;
1668 if (con->current_border_width < 0) {
1669 if (con_is_floating(con)) {
1670 border_width = config.default_floating_border_width;
1671 } else {
1672 border_width = config.default_border_width;
1673 }
1674 }
1675 DLOG("Effective border width is set to: %d\n", border_width);
1676 /* Shortcut to avoid calling con_adjacent_borders() on dock containers. */
1677 int border_style = con_border_style(con);
1678 if (border_style == BS_NONE)
1679 return (Rect){0, 0, 0, 0};
1680 if (border_style == BS_NORMAL) {
1681 result = (Rect){border_width, 0, -(2 * border_width), -(border_width)};
1682 } else {
1683 result = (Rect){border_width, border_width, -(2 * border_width), -(2 * border_width)};
1684 }
1685
1686 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
1687 if (borders_to_hide & ADJ_LEFT_SCREEN_EDGE) {
1688 result.x -= border_width;
1689 result.width += border_width;
1690 }
1691 if (borders_to_hide & ADJ_RIGHT_SCREEN_EDGE) {
1692 result.width += border_width;
1693 }
1694 if (borders_to_hide & ADJ_UPPER_SCREEN_EDGE && (border_style != BS_NORMAL)) {
1695 result.y -= border_width;
1696 result.height += border_width;
1697 }
1698 if (borders_to_hide & ADJ_LOWER_SCREEN_EDGE) {
1699 result.height += border_width;
1700 }
1701 return result;
1702 }
1703
1704 /*
1705 * Returns adjacent borders of the window. We need this if hide_edge_borders is
1706 * enabled.
1707 */
con_adjacent_borders(Con * con)1708 adjacent_t con_adjacent_borders(Con *con) {
1709 adjacent_t result = ADJ_NONE;
1710 /* Floating windows are never adjacent to any other window, so
1711 don’t hide their border(s). This prevents bug #998. */
1712 if (con_is_floating(con))
1713 return result;
1714
1715 Con *workspace = con_get_workspace(con);
1716 if (con->rect.x == workspace->rect.x)
1717 result |= ADJ_LEFT_SCREEN_EDGE;
1718 if (con->rect.x + con->rect.width == workspace->rect.x + workspace->rect.width)
1719 result |= ADJ_RIGHT_SCREEN_EDGE;
1720 if (con->rect.y == workspace->rect.y)
1721 result |= ADJ_UPPER_SCREEN_EDGE;
1722 if (con->rect.y + con->rect.height == workspace->rect.y + workspace->rect.height)
1723 result |= ADJ_LOWER_SCREEN_EDGE;
1724 return result;
1725 }
1726
1727 /*
1728 * Use this function to get a container’s border style. This is important
1729 * because when inside a stack, the border style is always BS_NORMAL.
1730 * For tabbed mode, the same applies, with one exception: when the container is
1731 * borderless and the only element in the tabbed container, the border is not
1732 * rendered.
1733 *
1734 * For children of a CT_DOCKAREA, the border style is always none.
1735 *
1736 */
con_border_style(Con * con)1737 int con_border_style(Con *con) {
1738 if (con->fullscreen_mode == CF_OUTPUT || con->fullscreen_mode == CF_GLOBAL) {
1739 DLOG("this one is fullscreen! overriding BS_NONE\n");
1740 return BS_NONE;
1741 }
1742
1743 if (con->parent->layout == L_STACKED)
1744 return (con_num_children(con->parent) == 1 ? con->border_style : BS_NORMAL);
1745
1746 if (con->parent->layout == L_TABBED && con->border_style != BS_NORMAL)
1747 return (con_num_children(con->parent) == 1 ? con->border_style : BS_NORMAL);
1748
1749 if (con->parent->type == CT_DOCKAREA)
1750 return BS_NONE;
1751
1752 return con->border_style;
1753 }
1754
1755 /*
1756 * Sets the given border style on con, correctly keeping the position/size of a
1757 * floating window.
1758 *
1759 */
con_set_border_style(Con * con,int border_style,int border_width)1760 void con_set_border_style(Con *con, int border_style, int border_width) {
1761 /* Handle the simple case: non-floating containerns */
1762 if (!con_is_floating(con)) {
1763 con->border_style = border_style;
1764 con->current_border_width = border_width;
1765 return;
1766 }
1767
1768 /* For floating containers, we want to keep the position/size of the
1769 * *window* itself. We first add the border pixels to con->rect to make
1770 * con->rect represent the absolute position of the window (same for
1771 * parent). Then, we change the border style and subtract the new border
1772 * pixels. For the parent, we do the same also for the decoration. */
1773 DLOG("This is a floating container\n");
1774
1775 Con *parent = con->parent;
1776 Rect bsr = con_border_style_rect(con);
1777 int deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
1778
1779 con->rect = rect_add(con->rect, bsr);
1780 parent->rect = rect_add(parent->rect, bsr);
1781 parent->rect.y += deco_height;
1782 parent->rect.height -= deco_height;
1783
1784 /* Change the border style, get new border/decoration values. */
1785 con->border_style = border_style;
1786 con->current_border_width = border_width;
1787 bsr = con_border_style_rect(con);
1788 deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
1789
1790 con->rect = rect_sub(con->rect, bsr);
1791 parent->rect = rect_sub(parent->rect, bsr);
1792 parent->rect.y -= deco_height;
1793 parent->rect.height += deco_height;
1794 }
1795
1796 /*
1797 * This function changes the layout of a given container. Use it to handle
1798 * special cases like changing a whole workspace to stacked/tabbed (creates a
1799 * new split container before).
1800 *
1801 */
con_set_layout(Con * con,layout_t layout)1802 void con_set_layout(Con *con, layout_t layout) {
1803 DLOG("con_set_layout(%p, %d), con->type = %d\n",
1804 con, layout, con->type);
1805
1806 /* Users can focus workspaces, but not any higher in the hierarchy.
1807 * Focus on the workspace is a special case, since in every other case, the
1808 * user means "change the layout of the parent split container". */
1809 if (con->type != CT_WORKSPACE)
1810 con = con->parent;
1811
1812 /* We fill in last_split_layout when switching to a different layout
1813 * since there are many places in the code that don’t use
1814 * con_set_layout(). */
1815 if (con->layout == L_SPLITH || con->layout == L_SPLITV)
1816 con->last_split_layout = con->layout;
1817
1818 /* When the container type is CT_WORKSPACE, the user wants to change the
1819 * whole workspace into stacked/tabbed mode. To do this and still allow
1820 * intuitive operations (like level-up and then opening a new window), we
1821 * need to create a new split container. */
1822 if (con->type == CT_WORKSPACE) {
1823 if (con_num_children(con) == 0) {
1824 layout_t ws_layout = (layout == L_STACKED || layout == L_TABBED) ? layout : L_DEFAULT;
1825 DLOG("Setting workspace_layout to %d\n", ws_layout);
1826 con->workspace_layout = ws_layout;
1827 DLOG("Setting layout to %d\n", layout);
1828 con->layout = layout;
1829 } else if (layout == L_STACKED || layout == L_TABBED || layout == L_SPLITV || layout == L_SPLITH) {
1830 DLOG("Creating new split container\n");
1831 /* 1: create a new split container */
1832 Con *new = con_new(NULL, NULL);
1833 new->parent = con;
1834
1835 /* 2: Set the requested layout on the split container and mark it as
1836 * split. */
1837 new->layout = layout;
1838 new->last_split_layout = con->last_split_layout;
1839
1840 /* 3: move the existing cons of this workspace below the new con */
1841 Con **focus_order = get_focus_order(con);
1842
1843 DLOG("Moving cons\n");
1844 Con *child;
1845 while (!TAILQ_EMPTY(&(con->nodes_head))) {
1846 child = TAILQ_FIRST(&(con->nodes_head));
1847 con_detach(child);
1848 con_attach(child, new, true);
1849 }
1850
1851 set_focus_order(new, focus_order);
1852 free(focus_order);
1853
1854 /* 4: attach the new split container to the workspace */
1855 DLOG("Attaching new split to ws\n");
1856 con_attach(new, con, false);
1857
1858 tree_flatten(croot);
1859 con_force_split_parents_redraw(con);
1860 return;
1861 }
1862 }
1863
1864 if (layout == L_DEFAULT) {
1865 /* Special case: the layout formerly known as "default" (in combination
1866 * with an orientation). Since we switched to splith/splitv layouts,
1867 * using the "default" layout (which "only" should happen when using
1868 * legacy configs) is using the last split layout (either splith or
1869 * splitv) in order to still do the same thing. */
1870 con->layout = con->last_split_layout;
1871 /* In case last_split_layout was not initialized… */
1872 if (con->layout == L_DEFAULT)
1873 con->layout = L_SPLITH;
1874 } else {
1875 con->layout = layout;
1876 }
1877 con_force_split_parents_redraw(con);
1878 }
1879
1880 /*
1881 * This function toggles the layout of a given container. toggle_mode can be
1882 * either 'default' (toggle only between stacked/tabbed/last_split_layout),
1883 * 'split' (toggle only between splitv/splith) or 'all' (toggle between all
1884 * layouts).
1885 *
1886 */
con_toggle_layout(Con * con,const char * toggle_mode)1887 void con_toggle_layout(Con *con, const char *toggle_mode) {
1888 Con *parent = con;
1889 /* Users can focus workspaces, but not any higher in the hierarchy.
1890 * Focus on the workspace is a special case, since in every other case, the
1891 * user means "change the layout of the parent split container". */
1892 if (con->type != CT_WORKSPACE)
1893 parent = con->parent;
1894 DLOG("con_toggle_layout(%p, %s), parent = %p\n", con, toggle_mode, parent);
1895
1896 const char delim[] = " ";
1897
1898 if (strcasecmp(toggle_mode, "split") == 0 || strstr(toggle_mode, delim)) {
1899 /* L_DEFAULT is used as a placeholder value to distinguish if
1900 * the first layout has already been saved. (it can never be L_DEFAULT) */
1901 layout_t new_layout = L_DEFAULT;
1902 bool current_layout_found = false;
1903 char *tm_dup = sstrdup(toggle_mode);
1904 char *cur_tok = strtok(tm_dup, delim);
1905
1906 for (layout_t layout; cur_tok != NULL; cur_tok = strtok(NULL, delim)) {
1907 if (strcasecmp(cur_tok, "split") == 0) {
1908 /* Toggle between splits. When the current layout is not a split
1909 * layout, we just switch back to last_split_layout. Otherwise, we
1910 * change to the opposite split layout. */
1911 if (parent->layout != L_SPLITH && parent->layout != L_SPLITV) {
1912 layout = parent->last_split_layout;
1913 /* In case last_split_layout was not initialized… */
1914 if (layout == L_DEFAULT) {
1915 layout = L_SPLITH;
1916 }
1917 } else {
1918 layout = (parent->layout == L_SPLITH) ? L_SPLITV : L_SPLITH;
1919 }
1920 } else {
1921 bool success = layout_from_name(cur_tok, &layout);
1922 if (!success || layout == L_DEFAULT) {
1923 ELOG("The token '%s' was not recognized and has been skipped.\n", cur_tok);
1924 continue;
1925 }
1926 }
1927
1928 /* If none of the specified layouts match the current,
1929 * fall back to the first layout in the list */
1930 if (new_layout == L_DEFAULT) {
1931 new_layout = layout;
1932 }
1933
1934 /* We found the active layout in the last iteration, so
1935 * now let's activate the current layout (next in list) */
1936 if (current_layout_found) {
1937 new_layout = layout;
1938 break;
1939 }
1940
1941 if (parent->layout == layout) {
1942 current_layout_found = true;
1943 }
1944 }
1945 free(tm_dup);
1946
1947 if (new_layout != L_DEFAULT) {
1948 con_set_layout(con, new_layout);
1949 }
1950 } else if (strcasecmp(toggle_mode, "all") == 0 || strcasecmp(toggle_mode, "default") == 0) {
1951 if (parent->layout == L_STACKED)
1952 con_set_layout(con, L_TABBED);
1953 else if (parent->layout == L_TABBED) {
1954 if (strcasecmp(toggle_mode, "all") == 0)
1955 con_set_layout(con, L_SPLITH);
1956 else
1957 con_set_layout(con, parent->last_split_layout);
1958 } else if (parent->layout == L_SPLITH || parent->layout == L_SPLITV) {
1959 if (strcasecmp(toggle_mode, "all") == 0) {
1960 /* When toggling through all modes, we toggle between
1961 * splith/splitv, whereas normally we just directly jump to
1962 * stacked. */
1963 if (parent->layout == L_SPLITH)
1964 con_set_layout(con, L_SPLITV);
1965 else
1966 con_set_layout(con, L_STACKED);
1967 } else {
1968 con_set_layout(con, L_STACKED);
1969 }
1970 }
1971 }
1972 }
1973
1974 /*
1975 * Callback which will be called when removing a child from the given con.
1976 * Kills the container if it is empty and replaces it with the child if there
1977 * is exactly one child.
1978 *
1979 */
con_on_remove_child(Con * con)1980 static void con_on_remove_child(Con *con) {
1981 DLOG("on_remove_child\n");
1982
1983 /* Every container 'above' (in the hierarchy) the workspace content should
1984 * not be closed when the last child was removed */
1985 if (con->type == CT_OUTPUT ||
1986 con->type == CT_ROOT ||
1987 con->type == CT_DOCKAREA ||
1988 (con->parent != NULL && con->parent->type == CT_OUTPUT)) {
1989 DLOG("not handling, type = %d, name = %s\n", con->type, con->name);
1990 return;
1991 }
1992
1993 /* For workspaces, close them only if they're not visible anymore */
1994 if (con->type == CT_WORKSPACE) {
1995 if (TAILQ_EMPTY(&(con->focus_head)) && !workspace_is_visible(con)) {
1996 LOG("Closing old workspace (%p / %s), it is empty\n", con, con->name);
1997 yajl_gen gen = ipc_marshal_workspace_event("empty", con, NULL);
1998 tree_close_internal(con, DONT_KILL_WINDOW, false);
1999
2000 const unsigned char *payload;
2001 ylength length;
2002 y(get_buf, &payload, &length);
2003 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, (const char *)payload);
2004
2005 y(free);
2006 }
2007 return;
2008 }
2009
2010 con_force_split_parents_redraw(con);
2011 con->urgent = con_has_urgent_child(con);
2012 con_update_parents_urgency(con);
2013
2014 /* TODO: check if this container would swallow any other client and
2015 * don’t close it automatically. */
2016 int children = con_num_children(con);
2017 if (children == 0) {
2018 DLOG("Container empty, closing\n");
2019 tree_close_internal(con, DONT_KILL_WINDOW, false);
2020 return;
2021 }
2022 }
2023
2024 /*
2025 * Determines the minimum size of the given con by looking at its children (for
2026 * split/stacked/tabbed cons). Will be called when resizing floating cons
2027 *
2028 */
con_minimum_size(Con * con)2029 Rect con_minimum_size(Con *con) {
2030 DLOG("Determining minimum size for con %p\n", con);
2031
2032 if (con_is_leaf(con)) {
2033 DLOG("leaf node, returning 75x50\n");
2034 return (Rect){0, 0, 75, 50};
2035 }
2036
2037 if (con->type == CT_FLOATING_CON) {
2038 DLOG("floating con\n");
2039 Con *child = TAILQ_FIRST(&(con->nodes_head));
2040 return con_minimum_size(child);
2041 }
2042
2043 if (con->layout == L_STACKED || con->layout == L_TABBED) {
2044 uint32_t max_width = 0, max_height = 0, deco_height = 0;
2045 Con *child;
2046 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
2047 Rect min = con_minimum_size(child);
2048 deco_height += child->deco_rect.height;
2049 max_width = max(max_width, min.width);
2050 max_height = max(max_height, min.height);
2051 }
2052 DLOG("stacked/tabbed now, returning %d x %d + deco_rect = %d\n",
2053 max_width, max_height, deco_height);
2054 return (Rect){0, 0, max_width, max_height + deco_height};
2055 }
2056
2057 /* For horizontal/vertical split containers we sum up the width (h-split)
2058 * or height (v-split) and use the maximum of the height (h-split) or width
2059 * (v-split) as minimum size. */
2060 if (con_is_split(con)) {
2061 uint32_t width = 0, height = 0;
2062 Con *child;
2063 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
2064 Rect min = con_minimum_size(child);
2065 if (con->layout == L_SPLITH) {
2066 width += min.width;
2067 height = max(height, min.height);
2068 } else {
2069 height += min.height;
2070 width = max(width, min.width);
2071 }
2072 }
2073 DLOG("split container, returning width = %d x height = %d\n", width, height);
2074 return (Rect){0, 0, width, height};
2075 }
2076
2077 ELOG("Unhandled case, type = %d, layout = %d, split = %d\n",
2078 con->type, con->layout, con_is_split(con));
2079 assert(false);
2080 }
2081
2082 /*
2083 * Returns true if changing the focus to con would be allowed considering
2084 * the fullscreen focus constraints. Specifically, if a fullscreen container or
2085 * any of its descendants is focused, this function returns true if and only if
2086 * focusing con would mean that focus would still be visible on screen, i.e.,
2087 * the newly focused container would not be obscured by a fullscreen container.
2088 *
2089 * In the simplest case, if a fullscreen container or any of its descendants is
2090 * fullscreen, this functions returns true if con is the fullscreen container
2091 * itself or any of its descendants, as this means focus wouldn't escape the
2092 * boundaries of the fullscreen container.
2093 *
2094 * In case the fullscreen container is of type CF_OUTPUT, this function returns
2095 * true if con is on a different workspace, as focus wouldn't be obscured by
2096 * the fullscreen container that is constrained to a different workspace.
2097 *
2098 * Note that this same logic can be applied to moving containers. If a
2099 * container can be focused under the fullscreen focus constraints, it can also
2100 * become a parent or sibling to the currently focused container.
2101 *
2102 */
con_fullscreen_permits_focusing(Con * con)2103 bool con_fullscreen_permits_focusing(Con *con) {
2104 /* No focus, no problem. */
2105 if (!focused)
2106 return true;
2107
2108 /* Find the first fullscreen ascendent. */
2109 Con *fs = focused;
2110 while (fs && fs->fullscreen_mode == CF_NONE)
2111 fs = fs->parent;
2112
2113 /* fs must be non-NULL since the workspace con doesn’t have CF_NONE and
2114 * there always has to be a workspace con in the hierarchy. */
2115 assert(fs != NULL);
2116 /* The most common case is we hit the workspace level. In this
2117 * situation, changing focus is also harmless. */
2118 assert(fs->fullscreen_mode != CF_NONE);
2119 if (fs->type == CT_WORKSPACE)
2120 return true;
2121
2122 /* Allow it if the container itself is the fullscreen container. */
2123 if (con == fs)
2124 return true;
2125
2126 /* If fullscreen is per-output, the focus being in a different workspace is
2127 * sufficient to guarantee that change won't leave fullscreen in bad shape. */
2128 if (fs->fullscreen_mode == CF_OUTPUT &&
2129 con_get_workspace(con) != con_get_workspace(fs)) {
2130 return true;
2131 }
2132
2133 /* Allow it only if the container to be focused is contained within the
2134 * current fullscreen container. */
2135 return con_has_parent(con, fs);
2136 }
2137
2138 /*
2139 *
2140 * Checks if the given container has an urgent child.
2141 *
2142 */
con_has_urgent_child(Con * con)2143 bool con_has_urgent_child(Con *con) {
2144 Con *child;
2145
2146 if (con_is_leaf(con))
2147 return con->urgent;
2148
2149 /* We are not interested in floating windows since they can only be
2150 * attached to a workspace → nodes_head instead of focus_head */
2151 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
2152 if (con_has_urgent_child(child))
2153 return true;
2154 }
2155
2156 return false;
2157 }
2158
2159 /*
2160 * Make all parent containers urgent if con is urgent or clear the urgent flag
2161 * of all parent containers if there are no more urgent children left.
2162 *
2163 */
con_update_parents_urgency(Con * con)2164 void con_update_parents_urgency(Con *con) {
2165 Con *parent = con->parent;
2166
2167 /* Urgency hints should not be set on any container higher up in the
2168 * hierarchy than the workspace level. Unfortunately, since the content
2169 * container has type == CT_CON, that’s not easy to verify in the loop
2170 * below, so we need another condition to catch that case: */
2171 if (con->type == CT_WORKSPACE)
2172 return;
2173
2174 bool new_urgency_value = con->urgent;
2175 while (parent && parent->type != CT_WORKSPACE && parent->type != CT_DOCKAREA) {
2176 if (new_urgency_value) {
2177 parent->urgent = true;
2178 } else {
2179 /* We can only reset the urgency when the parent
2180 * has no other urgent children */
2181 if (!con_has_urgent_child(parent))
2182 parent->urgent = false;
2183 }
2184 parent = parent->parent;
2185 }
2186 }
2187
2188 /*
2189 * Set urgency flag to the container, all the parent containers and the workspace.
2190 *
2191 */
con_set_urgency(Con * con,bool urgent)2192 void con_set_urgency(Con *con, bool urgent) {
2193 if (urgent && focused == con) {
2194 DLOG("Ignoring urgency flag for current client\n");
2195 return;
2196 }
2197
2198 const bool old_urgent = con->urgent;
2199
2200 if (con->urgency_timer == NULL) {
2201 con->urgent = urgent;
2202 } else
2203 DLOG("Discarding urgency WM_HINT because timer is running\n");
2204
2205 //CLIENT_LOG(con);
2206 if (con->window) {
2207 if (con->urgent) {
2208 gettimeofday(&con->window->urgent, NULL);
2209 } else {
2210 con->window->urgent.tv_sec = 0;
2211 con->window->urgent.tv_usec = 0;
2212 }
2213 }
2214
2215 con_update_parents_urgency(con);
2216
2217 Con *ws;
2218 /* Set the urgency flag on the workspace, if a workspace could be found
2219 * (for dock clients, that is not the case). */
2220 if ((ws = con_get_workspace(con)) != NULL)
2221 workspace_update_urgent_flag(ws);
2222
2223 if (con->urgent != old_urgent) {
2224 LOG("Urgency flag changed to %d\n", con->urgent);
2225 ipc_send_window_event("urgent", con);
2226 }
2227 }
2228
2229 /*
2230 * Create a string representing the subtree under con.
2231 *
2232 */
con_get_tree_representation(Con * con)2233 char *con_get_tree_representation(Con *con) {
2234 /* this code works as follows:
2235 * 1) create a string with the layout type (D/V/H/T/S) and an opening bracket
2236 * 2) append the tree representation of the children to the string
2237 * 3) add closing bracket
2238 *
2239 * The recursion ends when we hit a leaf, in which case we return the
2240 * class_instance of the contained window.
2241 */
2242
2243 /* end of recursion */
2244 if (con_is_leaf(con)) {
2245 if (!con->window)
2246 return sstrdup("nowin");
2247
2248 if (!con->window->class_instance)
2249 return sstrdup("noinstance");
2250
2251 return sstrdup(con->window->class_instance);
2252 }
2253
2254 char *buf;
2255 /* 1) add the Layout type to buf */
2256 if (con->layout == L_DEFAULT)
2257 buf = sstrdup("D[");
2258 else if (con->layout == L_SPLITV)
2259 buf = sstrdup("V[");
2260 else if (con->layout == L_SPLITH)
2261 buf = sstrdup("H[");
2262 else if (con->layout == L_TABBED)
2263 buf = sstrdup("T[");
2264 else if (con->layout == L_STACKED)
2265 buf = sstrdup("S[");
2266 else {
2267 ELOG("BUG: Code not updated to account for new layout type\n");
2268 assert(false);
2269 }
2270
2271 /* 2) append representation of children */
2272 Con *child;
2273 TAILQ_FOREACH (child, &(con->nodes_head), nodes) {
2274 char *child_txt = con_get_tree_representation(child);
2275
2276 char *tmp_buf;
2277 sasprintf(&tmp_buf, "%s%s%s", buf,
2278 (TAILQ_FIRST(&(con->nodes_head)) == child ? "" : " "), child_txt);
2279 free(buf);
2280 buf = tmp_buf;
2281 free(child_txt);
2282 }
2283
2284 /* 3) close the brackets */
2285 char *complete_buf;
2286 sasprintf(&complete_buf, "%s]", buf);
2287 free(buf);
2288
2289 return complete_buf;
2290 }
2291
2292 /*
2293 * Returns the container's title considering the current title format.
2294 *
2295 */
con_parse_title_format(Con * con)2296 i3String *con_parse_title_format(Con *con) {
2297 assert(con->title_format != NULL);
2298
2299 i3Window *win = con->window;
2300
2301 /* We need to ensure that we only escape the window title if pango
2302 * is used by the current font. */
2303 const bool pango_markup = font_is_pango();
2304
2305 char *title;
2306 char *class;
2307 char *instance;
2308 char *machine;
2309 if (win == NULL) {
2310 title = pango_escape_markup(con_get_tree_representation(con));
2311 class = sstrdup("i3-frame");
2312 instance = sstrdup("i3-frame");
2313 machine = sstrdup("");
2314 } else {
2315 title = pango_escape_markup(sstrdup((win->name == NULL) ? "" : i3string_as_utf8(win->name)));
2316 class = pango_escape_markup(sstrdup((win->class_class == NULL) ? "" : win->class_class));
2317 instance = pango_escape_markup(sstrdup((win->class_instance == NULL) ? "" : win->class_instance));
2318 machine = pango_escape_markup(sstrdup((win->machine == NULL) ? "" : win->machine));
2319 }
2320
2321 placeholder_t placeholders[] = {
2322 {.name = "%title", .value = title},
2323 {.name = "%class", .value = class},
2324 {.name = "%instance", .value = instance},
2325 {.name = "%machine", .value = machine},
2326 };
2327 const size_t num = sizeof(placeholders) / sizeof(placeholder_t);
2328
2329 char *formatted_str = format_placeholders(con->title_format, &placeholders[0], num);
2330 i3String *formatted = i3string_from_utf8(formatted_str);
2331 i3string_set_markup(formatted, pango_markup);
2332
2333 free(formatted_str);
2334 free(title);
2335 free(class);
2336 free(instance);
2337
2338 return formatted;
2339 }
2340
2341 /*
2342 * Swaps the two containers.
2343 *
2344 */
con_swap(Con * first,Con * second)2345 bool con_swap(Con *first, Con *second) {
2346 assert(first != NULL);
2347 assert(second != NULL);
2348 DLOG("Swapping containers %p / %p\n", first, second);
2349
2350 if (first->type != CT_CON) {
2351 ELOG("Only regular containers can be swapped, but found con = %p with type = %d.\n", first, first->type);
2352 return false;
2353 }
2354
2355 if (second->type != CT_CON) {
2356 ELOG("Only regular containers can be swapped, but found con = %p with type = %d.\n", second, second->type);
2357 return false;
2358 }
2359
2360 if (first == second) {
2361 DLOG("Swapping container %p with itself, nothing to do.\n", first);
2362 return false;
2363 }
2364
2365 if (con_has_parent(first, second) || con_has_parent(second, first)) {
2366 ELOG("Cannot swap containers %p and %p because they are in a parent-child relationship.\n", first, second);
2367 return false;
2368 }
2369
2370 Con *ws1 = con_get_workspace(first);
2371 Con *ws2 = con_get_workspace(second);
2372 Con *restore_focus = NULL;
2373 if (ws1 == ws2 && ws1 == con_get_workspace(focused)) {
2374 /* Preserve focus in the current workspace. */
2375 restore_focus = focused;
2376 } else if (first == focused || con_has_parent(focused, first)) {
2377 restore_focus = second;
2378 } else if (second == focused || con_has_parent(focused, second)) {
2379 restore_focus = first;
2380 }
2381
2382 #define SWAP_CONS_IN_TREE(headname, field) \
2383 do { \
2384 struct headname *head1 = &(first->parent->headname); \
2385 struct headname *head2 = &(second->parent->headname); \
2386 Con *first_prev = TAILQ_PREV(first, headname, field); \
2387 Con *second_prev = TAILQ_PREV(second, headname, field); \
2388 if (second_prev == first) { \
2389 TAILQ_SWAP(first, second, head1, field); \
2390 } else if (first_prev == second) { \
2391 TAILQ_SWAP(second, first, head1, field); \
2392 } else { \
2393 TAILQ_REMOVE(head1, first, field); \
2394 TAILQ_REMOVE(head2, second, field); \
2395 if (second_prev == NULL) { \
2396 TAILQ_INSERT_HEAD(head2, first, field); \
2397 } else { \
2398 TAILQ_INSERT_AFTER(head2, second_prev, first, field); \
2399 } \
2400 if (first_prev == NULL) { \
2401 TAILQ_INSERT_HEAD(head1, second, field); \
2402 } else { \
2403 TAILQ_INSERT_AFTER(head1, first_prev, second, field); \
2404 } \
2405 } \
2406 } while (0)
2407
2408 SWAP_CONS_IN_TREE(nodes_head, nodes);
2409 SWAP_CONS_IN_TREE(focus_head, focused);
2410 SWAP(first->parent, second->parent, Con *);
2411
2412 /* Floating nodes are children of CT_FLOATING_CONs, they are listed in
2413 * nodes_head and focus_head like all other containers. Thus, we don't need
2414 * to do anything special other than swapping the floating status and the
2415 * relevant rects. */
2416 SWAP(first->floating, second->floating, int);
2417 SWAP(first->rect, second->rect, Rect);
2418 SWAP(first->window_rect, second->window_rect, Rect);
2419
2420 /* We need to copy each other's percentages to ensure that the geometry
2421 * doesn't change during the swap. */
2422 SWAP(first->percent, second->percent, double);
2423
2424 if (restore_focus) {
2425 con_focus(restore_focus);
2426 }
2427
2428 /* Update new parents' & workspaces' urgency. */
2429 con_set_urgency(first, first->urgent);
2430 con_set_urgency(second, second->urgent);
2431
2432 /* Exchange fullscreen modes, can't use SWAP because we need to call the
2433 * correct functions. */
2434 fullscreen_mode_t second_fullscreen_mode = second->fullscreen_mode;
2435 if (first->fullscreen_mode == CF_NONE) {
2436 con_disable_fullscreen(second);
2437 } else {
2438 con_enable_fullscreen(second, first->fullscreen_mode);
2439 }
2440 if (second_fullscreen_mode == CF_NONE) {
2441 con_disable_fullscreen(first);
2442 } else {
2443 con_enable_fullscreen(first, second_fullscreen_mode);
2444 }
2445
2446 /* We don't actually need this since percentages-wise we haven't changed
2447 * anything, but we'll better be safe than sorry and just make sure as we'd
2448 * otherwise crash i3. */
2449 con_fix_percent(first->parent);
2450 con_fix_percent(second->parent);
2451
2452 FREE(first->deco_render_params);
2453 FREE(second->deco_render_params);
2454 con_force_split_parents_redraw(first);
2455 con_force_split_parents_redraw(second);
2456
2457 return true;
2458 }
2459
2460 /*
2461 * Returns container's rect size depending on its orientation.
2462 * i.e. its width when horizontal, its height when vertical.
2463 *
2464 */
con_rect_size_in_orientation(Con * con)2465 uint32_t con_rect_size_in_orientation(Con *con) {
2466 return (con_orientation(con) == HORIZ ? con->rect.width : con->rect.height);
2467 }
2468
2469 /*
2470 * Merges container specific data that should move with the window (e.g. marks,
2471 * title format, and the window itself) into another container, and closes the
2472 * old container.
2473 *
2474 */
con_merge_into(Con * old,Con * new)2475 void con_merge_into(Con *old, Con *new) {
2476 new->window = old->window;
2477 old->window = NULL;
2478
2479 if (old->title_format) {
2480 FREE(new->title_format);
2481 new->title_format = old->title_format;
2482 old->title_format = NULL;
2483 }
2484
2485 if (old->sticky_group) {
2486 FREE(new->sticky_group);
2487 new->sticky_group = old->sticky_group;
2488 old->sticky_group = NULL;
2489 }
2490
2491 new->sticky = old->sticky;
2492
2493 con_set_urgency(new, old->urgent);
2494
2495 mark_t *mark;
2496 TAILQ_FOREACH (mark, &(old->marks_head), marks) {
2497 TAILQ_INSERT_TAIL(&(new->marks_head), mark, marks);
2498 ipc_send_window_event("mark", new);
2499 }
2500 new->mark_changed = (TAILQ_FIRST(&(old->marks_head)) != NULL);
2501 TAILQ_INIT(&(old->marks_head));
2502
2503 tree_close_internal(old, DONT_KILL_WINDOW, false);
2504 }
2505