2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE)
7 * manage.c: Contains all functions for initially managing new windows
8 * (or existing ones on restart).
15 * Go through all existing windows (if the window manager is restarted) and manage them
18 void manage_existing_windows(xcb_window_t root) {
19 xcb_query_tree_reply_t *reply;
21 xcb_window_t *children;
22 xcb_get_window_attributes_cookie_t *cookies;
24 /* Get the tree of windows whose parent is the root window (= all) */
25 if ((reply = xcb_query_tree_reply(conn, xcb_query_tree(conn, root), 0)) == NULL)
28 len = xcb_query_tree_children_length(reply);
29 cookies = smalloc(len * sizeof(*cookies));
31 /* Request the window attributes for every window */
32 children = xcb_query_tree_children(reply);
33 for (i = 0; i < len; ++i)
34 cookies[i] = xcb_get_window_attributes(conn, children[i]);
36 /* Call manage_window with the attributes for every window */
37 for (i = 0; i < len; ++i)
38 manage_window(children[i], cookies[i], true);
45 * Restores the geometry of each window by reparenting it to the root window
46 * at the position of its frame.
48 * This is to be called *only* before exiting/restarting i3 because of evil
49 * side-effects which are to be expected when continuing to run i3.
52 void restore_geometry() {
53 DLOG("Restoring geometry\n");
56 TAILQ_FOREACH(con, &all_cons, all_cons)
58 DLOG("Re-adding X11 border of %d px\n", con->border_width);
59 con->window_rect.width += (2 * con->border_width);
60 con->window_rect.height += (2 * con->border_width);
61 xcb_set_window_rect(conn, con->window->id, con->window_rect);
62 DLOG("placing window %08x at %d %d\n", con->window->id, con->rect.x, con->rect.y);
63 xcb_reparent_window(conn, con->window->id, root,
64 con->rect.x, con->rect.y);
67 /* Make sure our changes reach the X server, we restart/exit now */
72 * Do some sanity checks and then reparent the window.
75 void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cookie,
76 bool needs_to_be_mapped) {
77 xcb_drawable_t d = { window };
78 xcb_get_geometry_cookie_t geomc;
79 xcb_get_geometry_reply_t *geom;
80 xcb_get_window_attributes_reply_t *attr = 0;
82 DLOG("---> looking at window 0x%08x\n", window);
84 xcb_get_property_cookie_t wm_type_cookie, strut_cookie, state_cookie,
85 utf8_title_cookie, title_cookie,
86 class_cookie, leader_cookie, transient_cookie;
89 geomc = xcb_get_geometry(conn, d);
91 /* Check if the window is mapped (it could be not mapped when intializing and
92 calling manage_window() for every window) */
93 if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
94 DLOG("Could not get attributes\n");
98 if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE) {
99 DLOG("map_state unviewable\n");
103 /* Don’t manage clients with the override_redirect flag */
104 DLOG("override_redirect is %d\n", attr->override_redirect);
105 if (attr->override_redirect)
108 /* Check if the window is already managed */
109 if (con_by_window_id(window) != NULL) {
110 DLOG("already managed (by con %p)\n", con_by_window_id(window));
114 /* Get the initial geometry (position, size, …) */
115 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL) {
116 DLOG("could not get geometry\n");
123 /* Set a temporary event mask for the new window, consisting only of
124 * PropertyChange. We need to be notified of PropertyChanges because the
125 * client can change its properties *after* we requested them but *before*
126 * we actually reparented it and have set our final event mask. */
127 mask = XCB_CW_EVENT_MASK;
128 values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE;
129 xcb_change_window_attributes(conn, window, mask, values);
131 #define GET_PROPERTY(atom, len) xcb_get_property_unchecked(conn, false, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, len)
133 wm_type_cookie = GET_PROPERTY(A__NET_WM_WINDOW_TYPE, UINT32_MAX);
134 strut_cookie = GET_PROPERTY(A__NET_WM_STRUT_PARTIAL, UINT32_MAX);
135 state_cookie = GET_PROPERTY(A__NET_WM_STATE, UINT32_MAX);
136 utf8_title_cookie = GET_PROPERTY(A__NET_WM_NAME, 128);
137 leader_cookie = GET_PROPERTY(A_WM_CLIENT_LEADER, UINT32_MAX);
138 transient_cookie = GET_PROPERTY(A_WM_TRANSIENT_FOR, UINT32_MAX);
139 title_cookie = GET_PROPERTY(A_WM_NAME, 128);
140 class_cookie = GET_PROPERTY(A_WM_CLASS, 128);
141 /* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
143 DLOG("reparenting!\n");
145 i3Window *cwindow = scalloc(sizeof(i3Window));
146 cwindow->id = window;
148 /* We need to grab the mouse buttons for click to focus */
149 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
150 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
151 1 /* left mouse button */,
152 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
154 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
155 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
156 3 /* right mouse button */,
157 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
160 /* update as much information as possible so far (some replies may be NULL) */
161 window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL));
162 window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL));
163 window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL));
164 window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
165 window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
166 window_update_strut_partial(cwindow, xcb_get_property_reply(conn, strut_cookie, NULL));
168 /* check if the window needs WM_TAKE_FOCUS */
169 cwindow->needs_take_focus = window_supports_protocol(cwindow->id, A_WM_TAKE_FOCUS);
171 /* Where to start searching for a container that swallows the new one? */
172 Con *search_at = croot;
174 xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
175 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DOCK)) {
176 LOG("This window is of type dock\n");
177 Output *output = get_output_containing(geom->x, geom->y);
178 if (output != NULL) {
179 DLOG("Starting search at output %s\n", output->name);
180 search_at = output->con;
183 /* find out the desired position of this dock window */
184 if (cwindow->reserved.top > 0 && cwindow->reserved.bottom == 0) {
185 DLOG("Top dock client\n");
186 cwindow->dock = W_DOCK_TOP;
187 } else if (cwindow->reserved.top == 0 && cwindow->reserved.bottom > 0) {
188 DLOG("Bottom dock client\n");
189 cwindow->dock = W_DOCK_BOTTOM;
191 DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
192 if (geom->y < (search_at->rect.height / 2)) {
193 DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
194 geom->y, (search_at->rect.height / 2));
195 cwindow->dock = W_DOCK_TOP;
197 DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
198 geom->y, (search_at->rect.height / 2));
199 cwindow->dock = W_DOCK_BOTTOM;
204 DLOG("Initial geometry: (%d, %d, %d, %d)\n", geom->x, geom->y, geom->width, geom->height);
209 /* check assignments first */
210 if ((match = match_by_assignment(cwindow))) {
211 DLOG("Assignment matches (%p)\n", match);
212 if (match->insert_where == M_ASSIGN_WS) {
213 nc = con_descend_focused(workspace_get(match->target_ws, NULL));
214 DLOG("focused on ws %s: %p / %s\n", match->target_ws, nc, nc->name);
215 if (nc->type == CT_WORKSPACE)
216 nc = tree_open_con(nc);
217 else nc = tree_open_con(nc->parent);
220 /* TODO: two matches for one container */
222 /* See if any container swallows this new window */
223 nc = con_for_window(search_at, cwindow, &match);
225 if (focused->type == CT_CON && con_accepts_window(focused)) {
226 LOG("using current container, focused = %p, focused->name = %s\n",
227 focused, focused->name);
229 } else nc = tree_open_con(NULL);
231 /* M_BELOW inserts the new window as a child of the one which was
232 * matched (e.g. dock areas) */
233 if (match != NULL && match->insert_where == M_BELOW) {
234 nc = tree_open_con(nc);
239 DLOG("new container = %p\n", nc);
240 nc->window = cwindow;
243 nc->border_width = geom->border_width;
246 asprintf(&name, "[i3 con] container around %p", cwindow);
247 x_set_name(nc, name);
250 Con *ws = con_get_workspace(nc);
251 Con *fs = (ws ? con_get_fullscreen_con(ws) : NULL);
254 DLOG("Not in fullscreen mode, focusing\n");
257 else DLOG("dock, not focusing\n");
259 DLOG("fs = %p, ws = %p, not focusing\n", fs, ws);
260 /* Insert the new container in focus stack *after* the currently
261 * focused (fullscreen) con. This way, the new container will be
262 * focused after we return from fullscreen mode */
263 Con *first = TAILQ_FIRST(&(nc->parent->focus_head));
264 TAILQ_REMOVE(&(nc->parent->focus_head), nc, focused);
265 TAILQ_INSERT_AFTER(&(nc->parent->focus_head), first, nc, focused);
268 /* set floating if necessary */
269 bool want_floating = false;
270 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DIALOG) ||
271 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_UTILITY) ||
272 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_TOOLBAR) ||
273 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_SPLASH)) {
274 LOG("This window is a dialog window, setting floating\n");
275 want_floating = true;
278 if (cwindow->transient_for != XCB_NONE ||
279 (cwindow->leader != XCB_NONE &&
280 cwindow->leader != cwindow->id &&
281 con_by_window_id(cwindow->leader) != NULL)) {
282 LOG("This window is transiert for another window, setting floating\n");
283 want_floating = true;
285 if (config.popup_during_fullscreen == PDF_LEAVE_FULLSCREEN &&
287 LOG("There is a fullscreen window, leaving fullscreen mode\n");
288 con_toggle_fullscreen(fs);
292 /* dock clients cannot be floating, that makes no sense */
294 want_floating = false;
296 /* Store the requested geometry. The width/height gets raised to at least
297 * 75x50 when entering floating mode, which is the minimum size for a
298 * window to be useful (smaller windows are usually overlays/toolbars/…
299 * which are not managed by the wm anyways). We store the original geometry
300 * here because it’s used for dock clients. */
301 nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
304 DLOG("geometry = %d x %d\n", nc->geometry.width, nc->geometry.height);
305 floating_enable(nc, false);
308 /* to avoid getting an UnmapNotify event due to reparenting, we temporarily
309 * declare no interest in any state change event of this window */
310 values[0] = XCB_NONE;
311 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
313 xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
314 if (xcb_request_check(conn, rcookie) != NULL) {
315 LOG("Could not reparent the window, aborting\n");
319 mask = XCB_CW_EVENT_MASK;
320 values[0] = CHILD_EVENT_MASK;
321 xcb_change_window_attributes(conn, window, mask, values);
323 reply = xcb_get_property_reply(conn, state_cookie, NULL);
324 if (xcb_reply_contains_atom(reply, A__NET_WM_STATE_FULLSCREEN))
325 con_toggle_fullscreen(nc);
327 /* Put the client inside the save set. Upon termination (whether killed or
328 * normal exit does not matter) of the window manager, these clients will
329 * be correctly reparented to their most closest living ancestor (=
331 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
342 void reparent_window(xcb_connection_t *conn, xcb_window_t child,
343 xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
344 int16_t x, int16_t y, uint16_t width, uint16_t height,
345 uint32_t border_width) {
347 /* Minimum useful size for managed windows is 75x50 (primarily affects floating) */
348 width = max(width, 75);
349 height = max(height, 50);
351 if (config.default_border != NULL)
352 client_init_border(conn, new, config.default_border[1]);
354 /* We need to grab the mouse buttons for click to focus */
355 xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
356 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
357 1 /* left mouse button */,
358 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
360 xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
361 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
362 3 /* right mouse button */,
363 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
366 DLOG("Window is a dock.\n");
367 Output *t_out = get_output_containing(x, y);
368 if (t_out != c_ws->output) {
369 DLOG("Dock client requested to be on output %s by geometry (%d, %d)\n",
371 new->workspace = t_out->current_workspace;
374 new->borderless = true;
375 new->titlebar_position = TITLEBAR_OFF;
376 new->force_reconfigure = true;
377 new->container = NULL;
378 SLIST_INSERT_HEAD(&(t_out->dock_clients), new, dock_clients);
379 /* If it’s a dock we can’t make it float, so we break */
380 new->floating = FLOATING_AUTO_OFF;
383 /* All clients which have a leader should be floating */
384 if (!new->dock && !client_is_floating(new) && new->leader != 0) {
385 DLOG("Client has WM_CLIENT_LEADER hint set, setting floating\n");
386 new->floating = FLOATING_AUTO_ON;
389 if (new->workspace->auto_float) {
390 new->floating = FLOATING_AUTO_ON;
391 DLOG("workspace is in autofloat mode, setting floating\n");
395 /* Get _NET_WM_STRUT_PARTIAL to determine the client’s requested height */
397 preply = xcb_get_property_reply(conn, strut_cookie, NULL);
398 if (preply != NULL && preply->value_len > 0 && (strut = xcb_get_property_value(preply))) {
399 /* We only use a subset of the provided values, namely the reserved space at the top/bottom
400 of the screen. This is because the only possibility for bars is at to be at the top/bottom
401 with maximum horizontal size.
402 TODO: bars at the top */
403 new->desired_height = strut[3];
404 if (new->desired_height == 0) {
405 DLOG("Client wanted to be 0 pixels high, using the window's height (%d)\n", original_height);
406 new->desired_height = original_height;
408 DLOG("the client wants to be %d pixels high\n", new->desired_height);
410 DLOG("The client didn't specify space to reserve at the screen edge, using its height (%d)\n", original_height);
411 new->desired_height = original_height;
414 /* If it’s not a dock, we can check on which workspace we should put it. */
416 /* Firstly, we need to get the window’s class / title. We asked for the properties at the
417 * top of this function, get them now and pass them to our callback function for window class / title
418 * changes. It is important that the client was already inserted into the by_child table,
419 * because the callbacks won’t work otherwise. */
420 preply = xcb_get_property_reply(conn, utf8_title_cookie, NULL);
421 handle_windowname_change(NULL, conn, 0, new->child, atoms[_NET_WM_NAME], preply);
423 preply = xcb_get_property_reply(conn, title_cookie, NULL);
424 handle_windowname_change_legacy(NULL, conn, 0, new->child, WM_NAME, preply);
426 preply = xcb_get_property_reply(conn, class_cookie, NULL);
427 handle_windowclass_change(NULL, conn, 0, new->child, WM_CLASS, preply);
429 /* if WM_CLIENT_LEADER is set, we put the new window on the
430 * same window as its leader. This might be overwritten by
431 * assignments afterwards. */
432 if (new->leader != XCB_NONE) {
433 DLOG("client->leader is set (to 0x%08x)\n", new->leader);
434 Client *parent = table_get(&by_child, new->leader);
435 if (parent != NULL && parent->container != NULL) {
436 Workspace *t_ws = parent->workspace;
437 new->container = t_ws->table[parent->container->col][parent->container->row];
438 new->workspace = t_ws;
439 old_focused = new->container->currently_focused;
440 map_frame = workspace_is_visible(t_ws);
442 /* This is a little tricky: we cannot use
443 * workspace_update_urgent_flag() because the
444 * new window was not yet inserted into the
445 * focus stack on t_ws. */
448 DLOG("parent is not usable\n");
452 struct Assignment *assign;
453 TAILQ_FOREACH(assign, &assignments, assignments) {
454 if (get_matching_client(conn, assign->windowclass_title, new) == NULL)
457 if (assign->floating == ASSIGN_FLOATING_ONLY ||
458 assign->floating == ASSIGN_FLOATING) {
459 new->floating = FLOATING_AUTO_ON;
460 LOG("Assignment matches, putting client into floating mode\n");
461 if (assign->floating == ASSIGN_FLOATING_ONLY)
465 LOG("Assignment \"%s\" matches, so putting it on workspace %d\n",
466 assign->windowclass_title, assign->workspace);
468 if (c_ws->output->current_workspace->num == (assign->workspace-1)) {
469 DLOG("We are already there, no need to do anything\n");
473 DLOG("Changing container/workspace and unmapping the client\n");
474 Workspace *t_ws = workspace_get(assign->workspace-1, NULL);
475 workspace_initialize(t_ws, c_ws->output, false);
477 new->container = t_ws->table[t_ws->current_col][t_ws->current_row];
478 new->workspace = t_ws;
479 old_focused = new->container->currently_focused;
481 map_frame = workspace_is_visible(t_ws);
487 if (client_is_floating(new)) {
488 SLIST_INSERT_HEAD(&(new->workspace->focus_stack), new, focus_clients);
490 /* Add the client to the list of floating clients for its workspace */
491 TAILQ_INSERT_TAIL(&(new->workspace->floating_clients), new, floating_clients);
493 new->container = NULL;
495 new->rect.width = new->floating_rect.width + 2 + 2;
496 new->rect.height = new->floating_rect.height + (font->height + 2 + 2) + 2;
498 /* Some clients (like GIMP’s color picker window) get mapped
499 * to (0, 0), so we push them to a reasonable position
500 * (centered over their leader) */
501 if (new->leader != 0 && x == 0 && y == 0) {
502 DLOG("Floating client wants to (0x0), moving it over its leader instead\n");
503 Client *leader = table_get(&by_child, new->leader);
504 if (leader == NULL) {
505 DLOG("leader is NULL, centering it over current workspace\n");
507 x = c_ws->rect.x + (c_ws->rect.width / 2) - (new->rect.width / 2);
508 y = c_ws->rect.y + (c_ws->rect.height / 2) - (new->rect.height / 2);
510 x = leader->rect.x + (leader->rect.width / 2) - (new->rect.width / 2);
511 y = leader->rect.y + (leader->rect.height / 2) - (new->rect.height / 2);
514 new->floating_rect.x = new->rect.x = x;
515 new->floating_rect.y = new->rect.y = y;
516 DLOG("copying floating_rect from tiling (%d, %d) size (%d, %d)\n",
517 new->floating_rect.x, new->floating_rect.y,
518 new->floating_rect.width, new->floating_rect.height);
519 DLOG("outer rect (%d, %d) size (%d, %d)\n",
520 new->rect.x, new->rect.y, new->rect.width, new->rect.height);
522 /* Make sure it is on top of the other windows */
523 xcb_raise_window(conn, new->frame);
524 reposition_client(conn, new);
525 resize_client(conn, new);
526 /* redecorate_window flushes */
527 redecorate_window(conn, new);
530 new->initialized = true;
536 /* Map the window first to avoid flickering */
537 xcb_map_window(conn, child);
539 client_map(conn, new);
541 if ((CUR_CELL->workspace->fullscreen_client == NULL || new->fullscreen) && !new->dock) {
542 /* Focus the new window if we’re not in fullscreen mode and if it is not a dock window */
543 if ((new->workspace->fullscreen_client == NULL) || new->fullscreen) {
544 if (!client_is_floating(new)) {
545 new->container->currently_focused = new;
547 render_container(conn, new->container);
549 if (new->container == CUR_CELL || client_is_floating(new)) {
550 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, new->child, XCB_CURRENT_TIME);
551 ewmh_update_active_window(new->child);