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 LOG("Restoring geometry\n");
56 TAILQ_FOREACH(con, &all_cons, all_cons)
58 printf("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 printf("---> 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;
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 title_cookie = xcb_get_any_property_unchecked(conn, false, window, WM_NAME, 128);
90 class_cookie = xcb_get_any_property_unchecked(conn, false, window, WM_CLASS, 128);
93 geomc = xcb_get_geometry(conn, d);
95 /* Check if the window is mapped (it could be not mapped when intializing and
96 calling manage_window() for every window) */
97 if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
98 LOG("Could not get attributes\n");
102 if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE) {
103 LOG("map_state unviewable\n");
107 /* Don’t manage clients with the override_redirect flag */
108 LOG("override_redirect is %d\n", attr->override_redirect);
109 if (attr->override_redirect)
112 /* Check if the window is already managed */
113 if (con_by_window_id(window) != NULL) {
114 LOG("already managed (by con %p)\n", con_by_window_id(window));
118 /* Get the initial geometry (position, size, …) */
119 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL) {
120 LOG("could not get geometry\n");
124 LOG("reparenting!\n");
128 i3Window *cwindow = scalloc(sizeof(i3Window));
129 cwindow->id = window;
131 /* We need to grab the mouse buttons for click to focus */
132 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
133 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
134 1 /* left mouse button */,
135 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
137 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
138 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
139 3 /* right mouse button */,
140 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
143 /* update as much information as possible so far (some replies may be NULL) */
144 window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL));
145 window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL));
146 window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL));
151 /* TODO: assignments */
152 /* TODO: two matches for one container */
153 /* See if any container swallows this new window */
154 nc = con_for_window(cwindow, &match);
156 if (focused->type == CT_CON && con_accepts_window(focused)) {
157 LOG("using current container, focused = %p, focused->name = %s\n",
158 focused, focused->name);
160 } else nc = tree_open_con(NULL);
162 if (match != NULL && match->insert_where == M_ACTIVE) {
163 /* We need to go down the focus stack starting from nc */
164 while (TAILQ_FIRST(&(nc->focus_head)) != TAILQ_END(&(nc->focus_head))) {
165 printf("walking down one step...\n");
166 nc = TAILQ_FIRST(&(nc->focus_head));
168 /* We need to open a new con */
169 /* TODO: make a difference between match-once containers (directly assign
170 * cwindow) and match-multiple (tree_open_con first) */
171 nc = tree_open_con(nc->parent);
174 DLOG("new container = %p\n", nc);
175 nc->window = cwindow;
178 xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
179 if (xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_DOCK]))
180 LOG("this window is a dock\n");
182 /* set floating if necessary */
183 if (xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_DIALOG]) ||
184 xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_UTILITY]) ||
185 xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_TOOLBAR]) ||
186 xcb_reply_contains_atom(reply, atoms[_NET_WM_WINDOW_TYPE_SPLASH])) {
187 LOG("This window is a dialog window, setting floating\n");
189 /* We respect the geometry wishes of floating windows, as long as they
190 * are bigger than our minimal useful size (75x50). */
191 nc->rect.width = max(geom->width, 75);
192 nc->rect.height = max(geom->height, 50);
193 floating_enable(nc, false);
196 /* to avoid getting an UnmapNotify event due to reparenting, we temporarily
197 * declare no interest in any state change event of this window */
198 values[0] = XCB_NONE;
199 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
201 xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
202 if (xcb_request_check(conn, rcookie) != NULL) {
203 LOG("Could not reparent the window, aborting\n");
207 mask = XCB_CW_EVENT_MASK;
208 values[0] = CHILD_EVENT_MASK;
209 xcb_change_window_attributes(conn, window, mask, values);
211 reply = xcb_get_property_reply(conn, state_cookie, NULL);
212 if (xcb_reply_contains_atom(reply, atoms[_NET_WM_STATE_FULLSCREEN]))
213 con_toggle_fullscreen(nc);
215 /* Put the client inside the save set. Upon termination (whether killed or
216 * normal exit does not matter) of the window manager, these clients will
217 * be correctly reparented to their most closest living ancestor (=
219 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
230 void reparent_window(xcb_connection_t *conn, xcb_window_t child,
231 xcb_visualid_t visual, xcb_window_t root, uint8_t depth,
232 int16_t x, int16_t y, uint16_t width, uint16_t height,
233 uint32_t border_width) {
235 /* Minimum useful size for managed windows is 75x50 (primarily affects floating) */
236 width = max(width, 75);
237 height = max(height, 50);
239 if (config.default_border != NULL)
240 client_init_border(conn, new, config.default_border[1]);
242 /* We need to grab the mouse buttons for click to focus */
243 xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
244 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
245 1 /* left mouse button */,
246 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
248 xcb_grab_button(conn, false, child, XCB_EVENT_MASK_BUTTON_PRESS,
249 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
250 3 /* right mouse button */,
251 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
254 DLOG("Window is a dock.\n");
255 Output *t_out = get_output_containing(x, y);
256 if (t_out != c_ws->output) {
257 DLOG("Dock client requested to be on output %s by geometry (%d, %d)\n",
259 new->workspace = t_out->current_workspace;
262 new->borderless = true;
263 new->titlebar_position = TITLEBAR_OFF;
264 new->force_reconfigure = true;
265 new->container = NULL;
266 SLIST_INSERT_HEAD(&(t_out->dock_clients), new, dock_clients);
267 /* If it’s a dock we can’t make it float, so we break */
268 new->floating = FLOATING_AUTO_OFF;
271 /* All clients which have a leader should be floating */
272 if (!new->dock && !client_is_floating(new) && new->leader != 0) {
273 DLOG("Client has WM_CLIENT_LEADER hint set, setting floating\n");
274 new->floating = FLOATING_AUTO_ON;
277 if (new->workspace->auto_float) {
278 new->floating = FLOATING_AUTO_ON;
279 DLOG("workspace is in autofloat mode, setting floating\n");
283 /* Get _NET_WM_STRUT_PARTIAL to determine the client’s requested height */
285 preply = xcb_get_property_reply(conn, strut_cookie, NULL);
286 if (preply != NULL && preply->value_len > 0 && (strut = xcb_get_property_value(preply))) {
287 /* We only use a subset of the provided values, namely the reserved space at the top/bottom
288 of the screen. This is because the only possibility for bars is at to be at the top/bottom
289 with maximum horizontal size.
290 TODO: bars at the top */
291 new->desired_height = strut[3];
292 if (new->desired_height == 0) {
293 DLOG("Client wanted to be 0 pixels high, using the window's height (%d)\n", original_height);
294 new->desired_height = original_height;
296 DLOG("the client wants to be %d pixels high\n", new->desired_height);
298 DLOG("The client didn't specify space to reserve at the screen edge, using its height (%d)\n", original_height);
299 new->desired_height = original_height;
302 /* If it’s not a dock, we can check on which workspace we should put it. */
304 /* Firstly, we need to get the window’s class / title. We asked for the properties at the
305 * top of this function, get them now and pass them to our callback function for window class / title
306 * changes. It is important that the client was already inserted into the by_child table,
307 * because the callbacks won’t work otherwise. */
308 preply = xcb_get_property_reply(conn, utf8_title_cookie, NULL);
309 handle_windowname_change(NULL, conn, 0, new->child, atoms[_NET_WM_NAME], preply);
311 preply = xcb_get_property_reply(conn, title_cookie, NULL);
312 handle_windowname_change_legacy(NULL, conn, 0, new->child, WM_NAME, preply);
314 preply = xcb_get_property_reply(conn, class_cookie, NULL);
315 handle_windowclass_change(NULL, conn, 0, new->child, WM_CLASS, preply);
317 preply = xcb_get_property_reply(conn, leader_cookie, NULL);
318 handle_clientleader_change(NULL, conn, 0, new->child, atoms[WM_CLIENT_LEADER], preply);
320 /* if WM_CLIENT_LEADER is set, we put the new window on the
321 * same window as its leader. This might be overwritten by
322 * assignments afterwards. */
323 if (new->leader != XCB_NONE) {
324 DLOG("client->leader is set (to 0x%08x)\n", new->leader);
325 Client *parent = table_get(&by_child, new->leader);
326 if (parent != NULL && parent->container != NULL) {
327 Workspace *t_ws = parent->workspace;
328 new->container = t_ws->table[parent->container->col][parent->container->row];
329 new->workspace = t_ws;
330 old_focused = new->container->currently_focused;
331 map_frame = workspace_is_visible(t_ws);
333 /* This is a little tricky: we cannot use
334 * workspace_update_urgent_flag() because the
335 * new window was not yet inserted into the
336 * focus stack on t_ws. */
339 DLOG("parent is not usable\n");
343 struct Assignment *assign;
344 TAILQ_FOREACH(assign, &assignments, assignments) {
345 if (get_matching_client(conn, assign->windowclass_title, new) == NULL)
348 if (assign->floating == ASSIGN_FLOATING_ONLY ||
349 assign->floating == ASSIGN_FLOATING) {
350 new->floating = FLOATING_AUTO_ON;
351 LOG("Assignment matches, putting client into floating mode\n");
352 if (assign->floating == ASSIGN_FLOATING_ONLY)
356 LOG("Assignment \"%s\" matches, so putting it on workspace %d\n",
357 assign->windowclass_title, assign->workspace);
359 if (c_ws->output->current_workspace->num == (assign->workspace-1)) {
360 DLOG("We are already there, no need to do anything\n");
364 DLOG("Changing container/workspace and unmapping the client\n");
365 Workspace *t_ws = workspace_get(assign->workspace-1);
366 workspace_initialize(t_ws, c_ws->output, false);
368 new->container = t_ws->table[t_ws->current_col][t_ws->current_row];
369 new->workspace = t_ws;
370 old_focused = new->container->currently_focused;
372 map_frame = workspace_is_visible(t_ws);
378 if (client_is_floating(new)) {
379 SLIST_INSERT_HEAD(&(new->workspace->focus_stack), new, focus_clients);
381 /* Add the client to the list of floating clients for its workspace */
382 TAILQ_INSERT_TAIL(&(new->workspace->floating_clients), new, floating_clients);
384 new->container = NULL;
386 new->rect.width = new->floating_rect.width + 2 + 2;
387 new->rect.height = new->floating_rect.height + (font->height + 2 + 2) + 2;
389 /* Some clients (like GIMP’s color picker window) get mapped
390 * to (0, 0), so we push them to a reasonable position
391 * (centered over their leader) */
392 if (new->leader != 0 && x == 0 && y == 0) {
393 DLOG("Floating client wants to (0x0), moving it over its leader instead\n");
394 Client *leader = table_get(&by_child, new->leader);
395 if (leader == NULL) {
396 DLOG("leader is NULL, centering it over current workspace\n");
398 x = c_ws->rect.x + (c_ws->rect.width / 2) - (new->rect.width / 2);
399 y = c_ws->rect.y + (c_ws->rect.height / 2) - (new->rect.height / 2);
401 x = leader->rect.x + (leader->rect.width / 2) - (new->rect.width / 2);
402 y = leader->rect.y + (leader->rect.height / 2) - (new->rect.height / 2);
405 new->floating_rect.x = new->rect.x = x;
406 new->floating_rect.y = new->rect.y = y;
407 DLOG("copying floating_rect from tiling (%d, %d) size (%d, %d)\n",
408 new->floating_rect.x, new->floating_rect.y,
409 new->floating_rect.width, new->floating_rect.height);
410 DLOG("outer rect (%d, %d) size (%d, %d)\n",
411 new->rect.x, new->rect.y, new->rect.width, new->rect.height);
413 /* Make sure it is on top of the other windows */
414 xcb_raise_window(conn, new->frame);
415 reposition_client(conn, new);
416 resize_client(conn, new);
417 /* redecorate_window flushes */
418 redecorate_window(conn, new);
421 new->initialized = true;
427 /* Map the window first to avoid flickering */
428 xcb_map_window(conn, child);
430 client_map(conn, new);
432 if ((CUR_CELL->workspace->fullscreen_client == NULL || new->fullscreen) && !new->dock) {
433 /* Focus the new window if we’re not in fullscreen mode and if it is not a dock window */
434 if ((new->workspace->fullscreen_client == NULL) || new->fullscreen) {
435 if (!client_is_floating(new)) {
436 new->container->currently_focused = new;
438 render_container(conn, new->container);
440 if (new->container == CUR_CELL || client_is_floating(new)) {
441 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, new->child, XCB_CURRENT_TIME);
442 ewmh_update_active_window(new->child);