2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
7 * manage.c: Initially managing new windows (or existing ones on restart).
13 * Go through all existing windows (if the window manager is restarted) and manage them
16 void manage_existing_windows(xcb_window_t root) {
17 xcb_query_tree_reply_t *reply;
19 xcb_window_t *children;
20 xcb_get_window_attributes_cookie_t *cookies;
22 /* Get the tree of windows whose parent is the root window (= all) */
23 if ((reply = xcb_query_tree_reply(conn, xcb_query_tree(conn, root), 0)) == NULL)
26 len = xcb_query_tree_children_length(reply);
27 cookies = smalloc(len * sizeof(*cookies));
29 /* Request the window attributes for every window */
30 children = xcb_query_tree_children(reply);
31 for (i = 0; i < len; ++i)
32 cookies[i] = xcb_get_window_attributes(conn, children[i]);
34 /* Call manage_window with the attributes for every window */
35 for (i = 0; i < len; ++i)
36 manage_window(children[i], cookies[i], true);
43 * Restores the geometry of each window by reparenting it to the root window
44 * at the position of its frame.
46 * This is to be called *only* before exiting/restarting i3 because of evil
47 * side-effects which are to be expected when continuing to run i3.
50 void restore_geometry(void) {
51 DLOG("Restoring geometry\n");
54 TAILQ_FOREACH(con, &all_cons, all_cons)
56 DLOG("Re-adding X11 border of %d px\n", con->border_width);
57 con->window_rect.width += (2 * con->border_width);
58 con->window_rect.height += (2 * con->border_width);
59 xcb_set_window_rect(conn, con->window->id, con->window_rect);
60 DLOG("placing window %08x at %d %d\n", con->window->id, con->rect.x, con->rect.y);
61 xcb_reparent_window(conn, con->window->id, root,
62 con->rect.x, con->rect.y);
65 /* Make sure our changes reach the X server, we restart/exit now */
70 * Do some sanity checks and then reparent the window.
73 void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cookie,
74 bool needs_to_be_mapped) {
75 xcb_drawable_t d = { window };
76 xcb_get_geometry_cookie_t geomc;
77 xcb_get_geometry_reply_t *geom;
78 xcb_get_window_attributes_reply_t *attr = NULL;
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,
83 role_cookie, startup_id_cookie, wm_hints_cookie;
86 geomc = xcb_get_geometry(conn, d);
87 #define FREE_GEOMETRY() do { \
88 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) != NULL) \
92 /* Check if the window is mapped (it could be not mapped when intializing and
93 calling manage_window() for every window) */
94 if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
95 DLOG("Could not get attributes\n");
100 if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE) {
105 /* Don’t manage clients with the override_redirect flag */
106 if (attr->override_redirect) {
111 /* Check if the window is already managed */
112 if (con_by_window_id(window) != NULL) {
113 DLOG("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 DLOG("could not get geometry\n");
126 /* Set a temporary event mask for the new window, consisting only of
127 * PropertyChange. We need to be notified of PropertyChanges because the
128 * client can change its properties *after* we requested them but *before*
129 * we actually reparented it and have set our final event mask. */
130 values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE;
131 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
133 #define GET_PROPERTY(atom, len) xcb_get_property(conn, false, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, len)
135 wm_type_cookie = GET_PROPERTY(A__NET_WM_WINDOW_TYPE, UINT32_MAX);
136 strut_cookie = GET_PROPERTY(A__NET_WM_STRUT_PARTIAL, UINT32_MAX);
137 state_cookie = GET_PROPERTY(A__NET_WM_STATE, UINT32_MAX);
138 utf8_title_cookie = GET_PROPERTY(A__NET_WM_NAME, 128);
139 leader_cookie = GET_PROPERTY(A_WM_CLIENT_LEADER, UINT32_MAX);
140 transient_cookie = GET_PROPERTY(XCB_ATOM_WM_TRANSIENT_FOR, UINT32_MAX);
141 title_cookie = GET_PROPERTY(XCB_ATOM_WM_NAME, 128);
142 class_cookie = GET_PROPERTY(XCB_ATOM_WM_CLASS, 128);
143 role_cookie = GET_PROPERTY(A_WM_WINDOW_ROLE, 128);
144 startup_id_cookie = GET_PROPERTY(A__NET_STARTUP_ID, 512);
145 wm_hints_cookie = xcb_icccm_get_wm_hints(conn, window);
146 /* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
148 DLOG("Managing window 0x%08x\n", window);
150 i3Window *cwindow = scalloc(sizeof(i3Window));
151 cwindow->id = window;
152 cwindow->depth = get_visual_depth(attr->visual);
154 /* We need to grab the mouse buttons for click to focus */
155 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
156 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
157 1 /* left mouse button */,
158 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
160 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
161 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
162 3 /* right mouse button */,
163 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
166 /* update as much information as possible so far (some replies may be NULL) */
167 window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL), true);
168 window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL), true);
169 window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL), true);
170 window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
171 window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
172 window_update_strut_partial(cwindow, xcb_get_property_reply(conn, strut_cookie, NULL));
173 window_update_role(cwindow, xcb_get_property_reply(conn, role_cookie, NULL), true);
174 window_update_hints(cwindow, xcb_get_property_reply(conn, wm_hints_cookie, NULL));
176 xcb_get_property_reply_t *startup_id_reply;
177 startup_id_reply = xcb_get_property_reply(conn, startup_id_cookie, NULL);
178 char *startup_ws = startup_workspace_for_window(cwindow, startup_id_reply);
179 DLOG("startup workspace = %s\n", startup_ws);
181 /* check if the window needs WM_TAKE_FOCUS */
182 cwindow->needs_take_focus = window_supports_protocol(cwindow->id, A_WM_TAKE_FOCUS);
184 /* Where to start searching for a container that swallows the new one? */
185 Con *search_at = croot;
187 xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
188 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DOCK)) {
189 LOG("This window is of type dock\n");
190 Output *output = get_output_containing(geom->x, geom->y);
191 if (output != NULL) {
192 DLOG("Starting search at output %s\n", output->name);
193 search_at = output->con;
196 /* find out the desired position of this dock window */
197 if (cwindow->reserved.top > 0 && cwindow->reserved.bottom == 0) {
198 DLOG("Top dock client\n");
199 cwindow->dock = W_DOCK_TOP;
200 } else if (cwindow->reserved.top == 0 && cwindow->reserved.bottom > 0) {
201 DLOG("Bottom dock client\n");
202 cwindow->dock = W_DOCK_BOTTOM;
204 DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
205 if (geom->y < (search_at->rect.height / 2)) {
206 DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
207 geom->y, (search_at->rect.height / 2));
208 cwindow->dock = W_DOCK_TOP;
210 DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
211 geom->y, (search_at->rect.height / 2));
212 cwindow->dock = W_DOCK_BOTTOM;
217 DLOG("Initial geometry: (%d, %d, %d, %d)\n", geom->x, geom->y, geom->width, geom->height);
221 Assignment *assignment;
223 /* TODO: two matches for one container */
225 /* See if any container swallows this new window */
226 nc = con_for_window(search_at, cwindow, &match);
228 /* If not, check if it is assigned to a specific workspace / output */
229 if ((assignment = assignment_for(cwindow, A_TO_WORKSPACE | A_TO_OUTPUT))) {
230 DLOG("Assignment matches (%p)\n", match);
231 if (assignment->type == A_TO_WORKSPACE) {
232 nc = con_descend_tiling_focused(workspace_get(assignment->dest.workspace, NULL));
233 DLOG("focused on ws %s: %p / %s\n", assignment->dest.workspace, nc, nc->name);
234 if (nc->type == CT_WORKSPACE)
235 nc = tree_open_con(nc, cwindow);
236 else nc = tree_open_con(nc->parent, cwindow);
238 /* TODO: handle assignments with type == A_TO_OUTPUT */
239 } else if (startup_ws) {
240 /* If it’s not assigned, but was started on a specific workspace,
241 * we want to open it there */
242 DLOG("Using workspace on which this application was started (%s)\n", startup_ws);
243 nc = con_descend_tiling_focused(workspace_get(startup_ws, NULL));
244 DLOG("focused on ws %s: %p / %s\n", startup_ws, nc, nc->name);
245 if (nc->type == CT_WORKSPACE)
246 nc = tree_open_con(nc, cwindow);
247 else nc = tree_open_con(nc->parent, cwindow);
249 /* If not, insert it at the currently focused position */
250 if (focused->type == CT_CON && con_accepts_window(focused)) {
251 LOG("using current container, focused = %p, focused->name = %s\n",
252 focused, focused->name);
254 } else nc = tree_open_con(NULL, cwindow);
257 /* M_BELOW inserts the new window as a child of the one which was
258 * matched (e.g. dock areas) */
259 if (match != NULL && match->insert_where == M_BELOW) {
260 nc = tree_open_con(nc, cwindow);
264 DLOG("new container = %p\n", nc);
265 nc->window = cwindow;
268 nc->border_width = geom->border_width;
271 sasprintf(&name, "[i3 con] container around %p", cwindow);
272 x_set_name(nc, name);
275 Con *ws = con_get_workspace(nc);
276 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
278 fs = con_get_fullscreen_con(croot, CF_GLOBAL);
281 DLOG("Not in fullscreen mode, focusing\n");
282 if (!cwindow->dock) {
283 /* Check that the workspace is visible and on the same output as
284 * the current focused container. If the window was assigned to an
285 * invisible workspace, we should not steal focus. */
286 Con *current_output = con_get_output(focused);
287 Con *target_output = con_get_output(ws);
289 if (workspace_is_visible(ws) && current_output == target_output) {
290 if (!match || !match->restart_mode) {
292 } else DLOG("not focusing, matched with restart_mode == true\n");
293 } else DLOG("workspace not visible, not focusing\n");
294 } else DLOG("dock, not focusing\n");
296 DLOG("fs = %p, ws = %p, not focusing\n", fs, ws);
297 /* Insert the new container in focus stack *after* the currently
298 * focused (fullscreen) con. This way, the new container will be
299 * focused after we return from fullscreen mode */
300 Con *first = TAILQ_FIRST(&(nc->parent->focus_head));
302 /* We only modify the focus stack if the container is not already
303 * the first one. This can happen when existing containers swallow
304 * new windows, for example when restarting. */
305 TAILQ_REMOVE(&(nc->parent->focus_head), nc, focused);
306 TAILQ_INSERT_AFTER(&(nc->parent->focus_head), first, nc, focused);
310 /* set floating if necessary */
311 bool want_floating = false;
312 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DIALOG) ||
313 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_UTILITY) ||
314 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_TOOLBAR) ||
315 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_SPLASH)) {
316 LOG("This window is a dialog window, setting floating\n");
317 want_floating = true;
322 if (cwindow->transient_for != XCB_NONE ||
323 (cwindow->leader != XCB_NONE &&
324 cwindow->leader != cwindow->id &&
325 con_by_window_id(cwindow->leader) != NULL)) {
326 LOG("This window is transiert for another window, setting floating\n");
327 want_floating = true;
329 if (config.popup_during_fullscreen == PDF_LEAVE_FULLSCREEN &&
331 LOG("There is a fullscreen window, leaving fullscreen mode\n");
332 con_toggle_fullscreen(fs, CF_OUTPUT);
336 /* dock clients cannot be floating, that makes no sense */
338 want_floating = false;
340 /* Store the requested geometry. The width/height gets raised to at least
341 * 75x50 when entering floating mode, which is the minimum size for a
342 * window to be useful (smaller windows are usually overlays/toolbars/…
343 * which are not managed by the wm anyways). We store the original geometry
344 * here because it’s used for dock clients. */
345 nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
348 DLOG("geometry = %d x %d\n", nc->geometry.width, nc->geometry.height);
349 floating_enable(nc, true);
352 /* to avoid getting an UnmapNotify event due to reparenting, we temporarily
353 * declare no interest in any state change event of this window */
354 values[0] = XCB_NONE;
355 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
357 xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
358 if (xcb_request_check(conn, rcookie) != NULL) {
359 LOG("Could not reparent the window, aborting\n");
363 values[0] = CHILD_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
364 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
367 reply = xcb_get_property_reply(conn, state_cookie, NULL);
368 if (xcb_reply_contains_atom(reply, A__NET_WM_STATE_FULLSCREEN))
369 con_toggle_fullscreen(nc, CF_OUTPUT);
373 /* Put the client inside the save set. Upon termination (whether killed or
374 * normal exit does not matter) of the window manager, these clients will
375 * be correctly reparented to their most closest living ancestor (=
377 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
379 /* Check if any assignments match */
380 run_assignments(cwindow);