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("placing window at %d %d\n", con->rect.x, con->rect.y);
59 xcb_reparent_window(conn, con->window->id, root,
60 con->rect.x, con->rect.y);
63 /* Make sure our changes reach the X server, we restart/exit now */
68 * Do some sanity checks and then reparent the window.
71 void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cookie,
72 bool needs_to_be_mapped) {
73 xcb_drawable_t d = { window };
74 xcb_get_geometry_cookie_t geomc;
75 xcb_get_geometry_reply_t *geom;
76 xcb_get_window_attributes_reply_t *attr = 0;
78 DLOG("---> looking at window 0x%08x\n", window);
80 xcb_get_property_cookie_t wm_type_cookie, strut_cookie, state_cookie,
81 utf8_title_cookie, title_cookie,
82 class_cookie, leader_cookie, transient_cookie;
84 wm_type_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[_NET_WM_WINDOW_TYPE], UINT32_MAX);
85 strut_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[_NET_WM_STRUT_PARTIAL], UINT32_MAX);
86 state_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[_NET_WM_STATE], UINT32_MAX);
87 utf8_title_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[_NET_WM_NAME], 128);
88 leader_cookie = xcb_get_any_property_unchecked(conn, false, window, atoms[WM_CLIENT_LEADER], UINT32_MAX);
89 transient_cookie = xcb_get_any_property_unchecked(conn, false, window, WM_TRANSIENT_FOR, UINT32_MAX);
90 title_cookie = xcb_get_any_property_unchecked(conn, false, window, WM_NAME, 128);
91 class_cookie = xcb_get_any_property_unchecked(conn, false, window, WM_CLASS, 128);
92 /* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
94 geomc = xcb_get_geometry(conn, d);
96 /* Check if the window is mapped (it could be not mapped when intializing and
97 calling manage_window() for every window) */
98 if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
99 DLOG("Could not get attributes\n");
103 if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE) {
104 DLOG("map_state unviewable\n");
108 /* Don’t manage clients with the override_redirect flag */
109 DLOG("override_redirect is %d\n", attr->override_redirect);
110 if (attr->override_redirect)
113 /* Check if the window is already managed */
114 if (con_by_window_id(window) != NULL) {
115 DLOG("already managed (by con %p)\n", con_by_window_id(window));
119 /* Get the initial geometry (position, size, …) */
120 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL) {
121 DLOG("could not get geometry\n");
125 DLOG("reparenting!\n");
129 i3Window *cwindow = scalloc(sizeof(i3Window));
130 cwindow->id = window;
132 /* We need to grab the mouse buttons for click to focus */
133 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
134 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
135 1 /* left mouse button */,
136 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
138 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
139 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
140 3 /* right mouse button */,
141 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
144 /* update as much information as possible so far (some replies may be NULL) */
145 window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL));
146 window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL));
147 window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL));
148 window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
149 window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
151 xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
152 if (xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_DOCK])) {
153 cwindow->dock = true;
154 LOG("this window is a dock\n");
161 /* TODO: assignments */
162 /* TODO: two matches for one container */
164 /* See if any container swallows this new window */
165 Con *search_at = croot;
167 /* for dock windows, we start the search at the appropriate output */
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 nc = con_for_window(search_at, cwindow, &match);
176 if (focused->type == CT_CON && con_accepts_window(focused)) {
177 LOG("using current container, focused = %p, focused->name = %s\n",
178 focused, focused->name);
180 } else nc = tree_open_con(NULL, true);
182 /* M_ACTIVE are assignments */
183 if (match != NULL && match->insert_where == M_ACTIVE) {
184 /* We need to go down the focus stack starting from nc */
185 while (TAILQ_FIRST(&(nc->focus_head)) != TAILQ_END(&(nc->focus_head))) {
186 DLOG("walking down one step...\n");
187 nc = TAILQ_FIRST(&(nc->focus_head));
189 /* We need to open a new con */
190 /* TODO: make a difference between match-once containers (directly assign
191 * cwindow) and match-multiple (tree_open_con first) */
192 nc = tree_open_con(nc->parent, true);
195 /* M_BELOW inserts the new window as a child of the one which was
196 * matched (e.g. dock areas) */
197 else if (match != NULL && match->insert_where == M_BELOW) {
198 nc = tree_open_con(nc, !cwindow->dock);
202 DLOG("new container = %p\n", nc);
203 nc->window = cwindow;
206 nc->border_width = geom->border_width;
209 asprintf(&name, "[i3 con] container around %p", cwindow);
210 x_set_name(nc, name);
213 /* set floating if necessary */
214 bool want_floating = false;
215 if (xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_DIALOG]) ||
216 xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_UTILITY]) ||
217 xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_TOOLBAR]) ||
218 xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_SPLASH])) {
219 LOG("This window is a dialog window, setting floating\n");
220 want_floating = true;
223 if (cwindow->transient_for != XCB_NONE ||
224 (cwindow->leader != XCB_NONE &&
225 cwindow->leader != cwindow->id &&
226 con_by_window_id(cwindow->leader) != NULL))
227 want_floating = true;
229 /* dock clients cannot be floating, that makes no sense */
231 want_floating = false;
233 nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
236 nc->rect.x = geom->x;
237 nc->rect.y = geom->y;
238 /* We respect the geometry wishes of floating windows, as long as they
239 * are bigger than our minimal useful size (75x50). */
240 nc->rect.width = max(geom->width, 75);
241 nc->rect.height = max(geom->height, 50);
242 DLOG("geometry = %d x %d\n", nc->rect.width, nc->rect.height);
243 floating_enable(nc, false);
246 /* to avoid getting an UnmapNotify event due to reparenting, we temporarily
247 * declare no interest in any state change event of this window */
248 values[0] = XCB_NONE;
249 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
251 xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
252 if (xcb_request_check(conn, rcookie) != NULL) {
253 LOG("Could not reparent the window, aborting\n");
257 mask = XCB_CW_EVENT_MASK;
258 values[0] = CHILD_EVENT_MASK;
259 xcb_change_window_attributes(conn, window, mask, values);
261 reply = xcb_get_property_reply(conn, state_cookie, NULL);
262 if (xcb_reply_contains_atom(reply, atoms[_NET_WM_STATE_FULLSCREEN]))
263 con_toggle_fullscreen(nc);
265 /* Put the client inside the save set. Upon termination (whether killed or
266 * normal exit does not matter) of the window manager, these clients will
267 * be correctly reparented to their most closest living ancestor (=
269 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
280 void reparent_window(xcb_connection_t *conn, xcb_window_t child,
281 xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
282 int16_t x, int16_t y, uint16_t width, uint16_t height,
283 uint32_t border_width) {
285 /* Minimum useful size for managed windows is 75x50 (primarily affects floating) */
286 width = max(width, 75);
287 height = max(height, 50);
289 if (config.default_border != NULL)
290 client_init_border(conn, new, config.default_border[1]);
292 /* We need to grab the mouse buttons for click to focus */
293 xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
294 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
295 1 /* left mouse button */,
296 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
298 xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
299 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
300 3 /* right mouse button */,
301 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
304 DLOG("Window is a dock.\n");
305 Output *t_out = get_output_containing(x, y);
306 if (t_out != c_ws->output) {
307 DLOG("Dock client requested to be on output %s by geometry (%d, %d)\n",
309 new->workspace = t_out->current_workspace;
312 new->borderless = true;
313 new->titlebar_position = TITLEBAR_OFF;
314 new->force_reconfigure = true;
315 new->container = NULL;
316 SLIST_INSERT_HEAD(&(t_out->dock_clients), new, dock_clients);
317 /* If it’s a dock we can’t make it float, so we break */
318 new->floating = FLOATING_AUTO_OFF;
321 /* All clients which have a leader should be floating */
322 if (!new->dock && !client_is_floating(new) && new->leader != 0) {
323 DLOG("Client has WM_CLIENT_LEADER hint set, setting floating\n");
324 new->floating = FLOATING_AUTO_ON;
327 if (new->workspace->auto_float) {
328 new->floating = FLOATING_AUTO_ON;
329 DLOG("workspace is in autofloat mode, setting floating\n");
333 /* Get _NET_WM_STRUT_PARTIAL to determine the client’s requested height */
335 preply = xcb_get_property_reply(conn, strut_cookie, NULL);
336 if (preply != NULL && preply->value_len > 0 && (strut = xcb_get_property_value(preply))) {
337 /* We only use a subset of the provided values, namely the reserved space at the top/bottom
338 of the screen. This is because the only possibility for bars is at to be at the top/bottom
339 with maximum horizontal size.
340 TODO: bars at the top */
341 new->desired_height = strut[3];
342 if (new->desired_height == 0) {
343 DLOG("Client wanted to be 0 pixels high, using the window's height (%d)\n", original_height);
344 new->desired_height = original_height;
346 DLOG("the client wants to be %d pixels high\n", new->desired_height);
348 DLOG("The client didn't specify space to reserve at the screen edge, using its height (%d)\n", original_height);
349 new->desired_height = original_height;
352 /* If it’s not a dock, we can check on which workspace we should put it. */
354 /* Firstly, we need to get the window’s class / title. We asked for the properties at the
355 * top of this function, get them now and pass them to our callback function for window class / title
356 * changes. It is important that the client was already inserted into the by_child table,
357 * because the callbacks won’t work otherwise. */
358 preply = xcb_get_property_reply(conn, utf8_title_cookie, NULL);
359 handle_windowname_change(NULL, conn, 0, new->child, atoms[_NET_WM_NAME], preply);
361 preply = xcb_get_property_reply(conn, title_cookie, NULL);
362 handle_windowname_change_legacy(NULL, conn, 0, new->child, WM_NAME, preply);
364 preply = xcb_get_property_reply(conn, class_cookie, NULL);
365 handle_windowclass_change(NULL, conn, 0, new->child, WM_CLASS, preply);
367 /* if WM_CLIENT_LEADER is set, we put the new window on the
368 * same window as its leader. This might be overwritten by
369 * assignments afterwards. */
370 if (new->leader != XCB_NONE) {
371 DLOG("client->leader is set (to 0x%08x)\n", new->leader);
372 Client *parent = table_get(&by_child, new->leader);
373 if (parent != NULL && parent->container != NULL) {
374 Workspace *t_ws = parent->workspace;
375 new->container = t_ws->table[parent->container->col][parent->container->row];
376 new->workspace = t_ws;
377 old_focused = new->container->currently_focused;
378 map_frame = workspace_is_visible(t_ws);
380 /* This is a little tricky: we cannot use
381 * workspace_update_urgent_flag() because the
382 * new window was not yet inserted into the
383 * focus stack on t_ws. */
386 DLOG("parent is not usable\n");
390 struct Assignment *assign;
391 TAILQ_FOREACH(assign, &assignments, assignments) {
392 if (get_matching_client(conn, assign->windowclass_title, new) == NULL)
395 if (assign->floating == ASSIGN_FLOATING_ONLY ||
396 assign->floating == ASSIGN_FLOATING) {
397 new->floating = FLOATING_AUTO_ON;
398 LOG("Assignment matches, putting client into floating mode\n");
399 if (assign->floating == ASSIGN_FLOATING_ONLY)
403 LOG("Assignment \"%s\" matches, so putting it on workspace %d\n",
404 assign->windowclass_title, assign->workspace);
406 if (c_ws->output->current_workspace->num == (assign->workspace-1)) {
407 DLOG("We are already there, no need to do anything\n");
411 DLOG("Changing container/workspace and unmapping the client\n");
412 Workspace *t_ws = workspace_get(assign->workspace-1);
413 workspace_initialize(t_ws, c_ws->output, false);
415 new->container = t_ws->table[t_ws->current_col][t_ws->current_row];
416 new->workspace = t_ws;
417 old_focused = new->container->currently_focused;
419 map_frame = workspace_is_visible(t_ws);
425 if (client_is_floating(new)) {
426 SLIST_INSERT_HEAD(&(new->workspace->focus_stack), new, focus_clients);
428 /* Add the client to the list of floating clients for its workspace */
429 TAILQ_INSERT_TAIL(&(new->workspace->floating_clients), new, floating_clients);
431 new->container = NULL;
433 new->rect.width = new->floating_rect.width + 2 + 2;
434 new->rect.height = new->floating_rect.height + (font->height + 2 + 2) + 2;
436 /* Some clients (like GIMP’s color picker window) get mapped
437 * to (0, 0), so we push them to a reasonable position
438 * (centered over their leader) */
439 if (new->leader != 0 && x == 0 && y == 0) {
440 DLOG("Floating client wants to (0x0), moving it over its leader instead\n");
441 Client *leader = table_get(&by_child, new->leader);
442 if (leader == NULL) {
443 DLOG("leader is NULL, centering it over current workspace\n");
445 x = c_ws->rect.x + (c_ws->rect.width / 2) - (new->rect.width / 2);
446 y = c_ws->rect.y + (c_ws->rect.height / 2) - (new->rect.height / 2);
448 x = leader->rect.x + (leader->rect.width / 2) - (new->rect.width / 2);
449 y = leader->rect.y + (leader->rect.height / 2) - (new->rect.height / 2);
452 new->floating_rect.x = new->rect.x = x;
453 new->floating_rect.y = new->rect.y = y;
454 DLOG("copying floating_rect from tiling (%d, %d) size (%d, %d)\n",
455 new->floating_rect.x, new->floating_rect.y,
456 new->floating_rect.width, new->floating_rect.height);
457 DLOG("outer rect (%d, %d) size (%d, %d)\n",
458 new->rect.x, new->rect.y, new->rect.width, new->rect.height);
460 /* Make sure it is on top of the other windows */
461 xcb_raise_window(conn, new->frame);
462 reposition_client(conn, new);
463 resize_client(conn, new);
464 /* redecorate_window flushes */
465 redecorate_window(conn, new);
468 new->initialized = true;
474 /* Map the window first to avoid flickering */
475 xcb_map_window(conn, child);
477 client_map(conn, new);
479 if ((CUR_CELL->workspace->fullscreen_client == NULL || new->fullscreen) && !new->dock) {
480 /* Focus the new window if we’re not in fullscreen mode and if it is not a dock window */
481 if ((new->workspace->fullscreen_client == NULL) || new->fullscreen) {
482 if (!client_is_floating(new)) {
483 new->container->currently_focused = new;
485 render_container(conn, new->container);
487 if (new->container == CUR_CELL || client_is_floating(new)) {
488 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, new->child, XCB_CURRENT_TIME);
489 ewmh_update_active_window(new->child);