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");
120 #define GET_PROPERTY(atom, len) xcb_get_property_unchecked(conn, false, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, len)
122 wm_type_cookie = GET_PROPERTY(A__NET_WM_WINDOW_TYPE, UINT32_MAX);
123 strut_cookie = GET_PROPERTY(A__NET_WM_STRUT_PARTIAL, UINT32_MAX);
124 state_cookie = GET_PROPERTY(A__NET_WM_STATE, UINT32_MAX);
125 utf8_title_cookie = GET_PROPERTY(A__NET_WM_NAME, 128);
126 leader_cookie = GET_PROPERTY(A_WM_CLIENT_LEADER, UINT32_MAX);
127 transient_cookie = GET_PROPERTY(A_WM_TRANSIENT_FOR, UINT32_MAX);
128 title_cookie = GET_PROPERTY(A_WM_NAME, 128);
129 class_cookie = GET_PROPERTY(A_WM_CLASS, 128);
130 /* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
132 DLOG("reparenting!\n");
136 i3Window *cwindow = scalloc(sizeof(i3Window));
137 cwindow->id = window;
139 /* We need to grab the mouse buttons for click to focus */
140 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
141 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
142 1 /* left mouse button */,
143 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
145 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
146 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
147 3 /* right mouse button */,
148 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
151 /* update as much information as possible so far (some replies may be NULL) */
152 window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL));
153 window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL));
154 window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL));
155 window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
156 window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
157 window_update_strut_partial(cwindow, xcb_get_property_reply(conn, strut_cookie, NULL));
159 /* check if the window needs WM_TAKE_FOCUS */
160 cwindow->needs_take_focus = window_supports_protocol(cwindow->id, A_WM_TAKE_FOCUS);
162 /* Where to start searching for a container that swallows the new one? */
163 Con *search_at = croot;
165 xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
166 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DOCK)) {
167 LOG("This window is of type dock\n");
168 Output *output = get_output_containing(geom->x, geom->y);
169 if (output != NULL) {
170 DLOG("Starting search at output %s\n", output->name);
171 search_at = output->con;
174 /* find out the desired position of this dock window */
175 if (cwindow->reserved.top > 0 && cwindow->reserved.bottom == 0) {
176 DLOG("Top dock client\n");
177 cwindow->dock = W_DOCK_TOP;
178 } else if (cwindow->reserved.top == 0 && cwindow->reserved.bottom > 0) {
179 DLOG("Bottom dock client\n");
180 cwindow->dock = W_DOCK_BOTTOM;
182 DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
183 if (geom->y < (search_at->rect.height / 2)) {
184 DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
185 geom->y, (search_at->rect.height / 2));
186 cwindow->dock = W_DOCK_TOP;
188 DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
189 geom->y, (search_at->rect.height / 2));
190 cwindow->dock = W_DOCK_BOTTOM;
195 DLOG("Initial geometry: (%d, %d, %d, %d)\n", geom->x, geom->y, geom->width, geom->height);
200 /* TODO: assignments */
201 /* TODO: two matches for one container */
203 /* See if any container swallows this new window */
204 nc = con_for_window(search_at, cwindow, &match);
206 if (focused->type == CT_CON && con_accepts_window(focused)) {
207 LOG("using current container, focused = %p, focused->name = %s\n",
208 focused, focused->name);
210 } else nc = tree_open_con(NULL);
212 /* M_ACTIVE are assignments */
213 if (match != NULL && match->insert_where == M_ACTIVE) {
214 /* We need to go down the focus stack starting from nc */
215 while (TAILQ_FIRST(&(nc->focus_head)) != TAILQ_END(&(nc->focus_head))) {
216 DLOG("walking down one step...\n");
217 nc = TAILQ_FIRST(&(nc->focus_head));
219 /* We need to open a new con */
220 /* TODO: make a difference between match-once containers (directly assign
221 * cwindow) and match-multiple (tree_open_con first) */
222 nc = tree_open_con(nc->parent);
225 /* M_BELOW inserts the new window as a child of the one which was
226 * matched (e.g. dock areas) */
227 else if (match != NULL && match->insert_where == M_BELOW) {
228 nc = tree_open_con(nc);
232 DLOG("new container = %p\n", nc);
233 nc->window = cwindow;
236 nc->border_width = geom->border_width;
239 asprintf(&name, "[i3 con] container around %p", cwindow);
240 x_set_name(nc, name);
243 Con *ws = con_get_workspace(nc);
244 Con *fs = (ws ? con_get_fullscreen_con(ws) : NULL);
247 DLOG("Not in fullscreen mode, focusing\n");
250 else DLOG("dock, not focusing\n");
252 DLOG("fs = %p, ws = %p, not focusing\n", fs, ws);
253 /* Insert the new container in focus stack *after* the currently
254 * focused (fullscreen) con. This way, the new container will be
255 * focused after we return from fullscreen mode */
256 Con *first = TAILQ_FIRST(&(nc->parent->focus_head));
257 TAILQ_REMOVE(&(nc->parent->focus_head), nc, focused);
258 TAILQ_INSERT_AFTER(&(nc->parent->focus_head), first, nc, focused);
261 /* set floating if necessary */
262 bool want_floating = false;
263 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DIALOG) ||
264 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_UTILITY) ||
265 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_TOOLBAR) ||
266 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_SPLASH)) {
267 LOG("This window is a dialog window, setting floating\n");
268 want_floating = true;
271 if (cwindow->transient_for != XCB_NONE ||
272 (cwindow->leader != XCB_NONE &&
273 cwindow->leader != cwindow->id &&
274 con_by_window_id(cwindow->leader) != NULL)) {
275 LOG("This window is transiert for another window, setting floating\n");
276 want_floating = true;
278 if (config.popup_during_fullscreen == PDF_LEAVE_FULLSCREEN &&
280 LOG("There is a fullscreen window, leaving fullscreen mode\n");
281 con_toggle_fullscreen(fs);
285 /* dock clients cannot be floating, that makes no sense */
287 want_floating = false;
289 /* Store the requested geometry. The width/height gets raised to at least
290 * 75x50 when entering floating mode, which is the minimum size for a
291 * window to be useful (smaller windows are usually overlays/toolbars/…
292 * which are not managed by the wm anyways). We store the original geometry
293 * here because it’s used for dock clients. */
294 nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
297 DLOG("geometry = %d x %d\n", nc->geometry.width, nc->geometry.height);
298 floating_enable(nc, false);
301 /* to avoid getting an UnmapNotify event due to reparenting, we temporarily
302 * declare no interest in any state change event of this window */
303 values[0] = XCB_NONE;
304 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
306 xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
307 if (xcb_request_check(conn, rcookie) != NULL) {
308 LOG("Could not reparent the window, aborting\n");
312 mask = XCB_CW_EVENT_MASK;
313 values[0] = CHILD_EVENT_MASK;
314 xcb_change_window_attributes(conn, window, mask, values);
316 reply = xcb_get_property_reply(conn, state_cookie, NULL);
317 if (xcb_reply_contains_atom(reply, A__NET_WM_STATE_FULLSCREEN))
318 con_toggle_fullscreen(nc);
320 /* Put the client inside the save set. Upon termination (whether killed or
321 * normal exit does not matter) of the window manager, these clients will
322 * be correctly reparented to their most closest living ancestor (=
324 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
335 void reparent_window(xcb_connection_t *conn, xcb_window_t child,
336 xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
337 int16_t x, int16_t y, uint16_t width, uint16_t height,
338 uint32_t border_width) {
340 /* Minimum useful size for managed windows is 75x50 (primarily affects floating) */
341 width = max(width, 75);
342 height = max(height, 50);
344 if (config.default_border != NULL)
345 client_init_border(conn, new, config.default_border[1]);
347 /* We need to grab the mouse buttons for click to focus */
348 xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
349 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
350 1 /* left mouse button */,
351 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
353 xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
354 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
355 3 /* right mouse button */,
356 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
359 DLOG("Window is a dock.\n");
360 Output *t_out = get_output_containing(x, y);
361 if (t_out != c_ws->output) {
362 DLOG("Dock client requested to be on output %s by geometry (%d, %d)\n",
364 new->workspace = t_out->current_workspace;
367 new->borderless = true;
368 new->titlebar_position = TITLEBAR_OFF;
369 new->force_reconfigure = true;
370 new->container = NULL;
371 SLIST_INSERT_HEAD(&(t_out->dock_clients), new, dock_clients);
372 /* If it’s a dock we can’t make it float, so we break */
373 new->floating = FLOATING_AUTO_OFF;
376 /* All clients which have a leader should be floating */
377 if (!new->dock && !client_is_floating(new) && new->leader != 0) {
378 DLOG("Client has WM_CLIENT_LEADER hint set, setting floating\n");
379 new->floating = FLOATING_AUTO_ON;
382 if (new->workspace->auto_float) {
383 new->floating = FLOATING_AUTO_ON;
384 DLOG("workspace is in autofloat mode, setting floating\n");
388 /* Get _NET_WM_STRUT_PARTIAL to determine the client’s requested height */
390 preply = xcb_get_property_reply(conn, strut_cookie, NULL);
391 if (preply != NULL && preply->value_len > 0 && (strut = xcb_get_property_value(preply))) {
392 /* We only use a subset of the provided values, namely the reserved space at the top/bottom
393 of the screen. This is because the only possibility for bars is at to be at the top/bottom
394 with maximum horizontal size.
395 TODO: bars at the top */
396 new->desired_height = strut[3];
397 if (new->desired_height == 0) {
398 DLOG("Client wanted to be 0 pixels high, using the window's height (%d)\n", original_height);
399 new->desired_height = original_height;
401 DLOG("the client wants to be %d pixels high\n", new->desired_height);
403 DLOG("The client didn't specify space to reserve at the screen edge, using its height (%d)\n", original_height);
404 new->desired_height = original_height;
407 /* If it’s not a dock, we can check on which workspace we should put it. */
409 /* Firstly, we need to get the window’s class / title. We asked for the properties at the
410 * top of this function, get them now and pass them to our callback function for window class / title
411 * changes. It is important that the client was already inserted into the by_child table,
412 * because the callbacks won’t work otherwise. */
413 preply = xcb_get_property_reply(conn, utf8_title_cookie, NULL);
414 handle_windowname_change(NULL, conn, 0, new->child, atoms[_NET_WM_NAME], preply);
416 preply = xcb_get_property_reply(conn, title_cookie, NULL);
417 handle_windowname_change_legacy(NULL, conn, 0, new->child, WM_NAME, preply);
419 preply = xcb_get_property_reply(conn, class_cookie, NULL);
420 handle_windowclass_change(NULL, conn, 0, new->child, WM_CLASS, preply);
422 /* if WM_CLIENT_LEADER is set, we put the new window on the
423 * same window as its leader. This might be overwritten by
424 * assignments afterwards. */
425 if (new->leader != XCB_NONE) {
426 DLOG("client->leader is set (to 0x%08x)\n", new->leader);
427 Client *parent = table_get(&by_child, new->leader);
428 if (parent != NULL && parent->container != NULL) {
429 Workspace *t_ws = parent->workspace;
430 new->container = t_ws->table[parent->container->col][parent->container->row];
431 new->workspace = t_ws;
432 old_focused = new->container->currently_focused;
433 map_frame = workspace_is_visible(t_ws);
435 /* This is a little tricky: we cannot use
436 * workspace_update_urgent_flag() because the
437 * new window was not yet inserted into the
438 * focus stack on t_ws. */
441 DLOG("parent is not usable\n");
445 struct Assignment *assign;
446 TAILQ_FOREACH(assign, &assignments, assignments) {
447 if (get_matching_client(conn, assign->windowclass_title, new) == NULL)
450 if (assign->floating == ASSIGN_FLOATING_ONLY ||
451 assign->floating == ASSIGN_FLOATING) {
452 new->floating = FLOATING_AUTO_ON;
453 LOG("Assignment matches, putting client into floating mode\n");
454 if (assign->floating == ASSIGN_FLOATING_ONLY)
458 LOG("Assignment \"%s\" matches, so putting it on workspace %d\n",
459 assign->windowclass_title, assign->workspace);
461 if (c_ws->output->current_workspace->num == (assign->workspace-1)) {
462 DLOG("We are already there, no need to do anything\n");
466 DLOG("Changing container/workspace and unmapping the client\n");
467 Workspace *t_ws = workspace_get(assign->workspace-1, NULL);
468 workspace_initialize(t_ws, c_ws->output, false);
470 new->container = t_ws->table[t_ws->current_col][t_ws->current_row];
471 new->workspace = t_ws;
472 old_focused = new->container->currently_focused;
474 map_frame = workspace_is_visible(t_ws);
480 if (client_is_floating(new)) {
481 SLIST_INSERT_HEAD(&(new->workspace->focus_stack), new, focus_clients);
483 /* Add the client to the list of floating clients for its workspace */
484 TAILQ_INSERT_TAIL(&(new->workspace->floating_clients), new, floating_clients);
486 new->container = NULL;
488 new->rect.width = new->floating_rect.width + 2 + 2;
489 new->rect.height = new->floating_rect.height + (font->height + 2 + 2) + 2;
491 /* Some clients (like GIMP’s color picker window) get mapped
492 * to (0, 0), so we push them to a reasonable position
493 * (centered over their leader) */
494 if (new->leader != 0 && x == 0 && y == 0) {
495 DLOG("Floating client wants to (0x0), moving it over its leader instead\n");
496 Client *leader = table_get(&by_child, new->leader);
497 if (leader == NULL) {
498 DLOG("leader is NULL, centering it over current workspace\n");
500 x = c_ws->rect.x + (c_ws->rect.width / 2) - (new->rect.width / 2);
501 y = c_ws->rect.y + (c_ws->rect.height / 2) - (new->rect.height / 2);
503 x = leader->rect.x + (leader->rect.width / 2) - (new->rect.width / 2);
504 y = leader->rect.y + (leader->rect.height / 2) - (new->rect.height / 2);
507 new->floating_rect.x = new->rect.x = x;
508 new->floating_rect.y = new->rect.y = y;
509 DLOG("copying floating_rect from tiling (%d, %d) size (%d, %d)\n",
510 new->floating_rect.x, new->floating_rect.y,
511 new->floating_rect.width, new->floating_rect.height);
512 DLOG("outer rect (%d, %d) size (%d, %d)\n",
513 new->rect.x, new->rect.y, new->rect.width, new->rect.height);
515 /* Make sure it is on top of the other windows */
516 xcb_raise_window(conn, new->frame);
517 reposition_client(conn, new);
518 resize_client(conn, new);
519 /* redecorate_window flushes */
520 redecorate_window(conn, new);
523 new->initialized = true;
529 /* Map the window first to avoid flickering */
530 xcb_map_window(conn, child);
532 client_map(conn, new);
534 if ((CUR_CELL->workspace->fullscreen_client == NULL || new->fullscreen) && !new->dock) {
535 /* Focus the new window if we’re not in fullscreen mode and if it is not a dock window */
536 if ((new->workspace->fullscreen_client == NULL) || new->fullscreen) {
537 if (!client_is_floating(new)) {
538 new->container->currently_focused = new;
540 render_container(conn, new->container);
542 if (new->container == CUR_CELL || client_is_floating(new)) {
543 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, new->child, XCB_CURRENT_TIME);
544 ewmh_update_active_window(new->child);