2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2011 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() {
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;
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 /* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
147 DLOG("Managing window 0x%08x\n", window);
149 i3Window *cwindow = scalloc(sizeof(i3Window));
150 cwindow->id = window;
152 /* We need to grab the mouse buttons for click to focus */
153 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
154 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
155 1 /* left mouse button */,
156 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
158 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
159 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
160 3 /* right mouse button */,
161 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
164 /* update as much information as possible so far (some replies may be NULL) */
165 window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL), true);
166 window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL), true);
167 window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL), true);
168 window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
169 window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
170 window_update_strut_partial(cwindow, xcb_get_property_reply(conn, strut_cookie, NULL));
171 window_update_role(cwindow, xcb_get_property_reply(conn, role_cookie, NULL), true);
173 xcb_get_property_reply_t *startup_id_reply;
174 startup_id_reply = xcb_get_property_reply(conn, startup_id_cookie, NULL);
175 char *startup_ws = startup_workspace_for_window(cwindow, startup_id_reply);
176 DLOG("startup workspace = %s\n", startup_ws);
178 /* check if the window needs WM_TAKE_FOCUS */
179 cwindow->needs_take_focus = window_supports_protocol(cwindow->id, A_WM_TAKE_FOCUS);
181 /* Where to start searching for a container that swallows the new one? */
182 Con *search_at = croot;
184 xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
185 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DOCK)) {
186 LOG("This window is of type dock\n");
187 Output *output = get_output_containing(geom->x, geom->y);
188 if (output != NULL) {
189 DLOG("Starting search at output %s\n", output->name);
190 search_at = output->con;
193 /* find out the desired position of this dock window */
194 if (cwindow->reserved.top > 0 && cwindow->reserved.bottom == 0) {
195 DLOG("Top dock client\n");
196 cwindow->dock = W_DOCK_TOP;
197 } else if (cwindow->reserved.top == 0 && cwindow->reserved.bottom > 0) {
198 DLOG("Bottom dock client\n");
199 cwindow->dock = W_DOCK_BOTTOM;
201 DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
202 if (geom->y < (search_at->rect.height / 2)) {
203 DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
204 geom->y, (search_at->rect.height / 2));
205 cwindow->dock = W_DOCK_TOP;
207 DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
208 geom->y, (search_at->rect.height / 2));
209 cwindow->dock = W_DOCK_BOTTOM;
214 DLOG("Initial geometry: (%d, %d, %d, %d)\n", geom->x, geom->y, geom->width, geom->height);
218 Assignment *assignment;
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 not, check if it is assigned to a specific workspace / output */
226 if ((assignment = assignment_for(cwindow, A_TO_WORKSPACE | A_TO_OUTPUT))) {
227 DLOG("Assignment matches (%p)\n", match);
228 if (assignment->type == A_TO_WORKSPACE) {
229 nc = con_descend_tiling_focused(workspace_get(assignment->dest.workspace, NULL));
230 DLOG("focused on ws %s: %p / %s\n", assignment->dest.workspace, nc, nc->name);
231 if (nc->type == CT_WORKSPACE)
232 nc = tree_open_con(nc, cwindow);
233 else nc = tree_open_con(nc->parent, cwindow);
235 /* TODO: handle assignments with type == A_TO_OUTPUT */
236 } else if (startup_ws) {
237 /* If it’s not assigned, but was started on a specific workspace,
238 * we want to open it there */
239 DLOG("Using workspace on which this application was started (%s)\n", startup_ws);
240 nc = con_descend_tiling_focused(workspace_get(startup_ws, NULL));
241 DLOG("focused on ws %s: %p / %s\n", startup_ws, nc, nc->name);
242 if (nc->type == CT_WORKSPACE)
243 nc = tree_open_con(nc, cwindow);
244 else nc = tree_open_con(nc->parent, cwindow);
246 /* If not, insert it at the currently focused position */
247 if (focused->type == CT_CON && con_accepts_window(focused)) {
248 LOG("using current container, focused = %p, focused->name = %s\n",
249 focused, focused->name);
251 } else nc = tree_open_con(NULL, cwindow);
254 /* M_BELOW inserts the new window as a child of the one which was
255 * matched (e.g. dock areas) */
256 if (match != NULL && match->insert_where == M_BELOW) {
257 nc = tree_open_con(nc, cwindow);
261 DLOG("new container = %p\n", nc);
262 nc->window = cwindow;
265 nc->border_width = geom->border_width;
268 sasprintf(&name, "[i3 con] container around %p", cwindow);
269 x_set_name(nc, name);
272 Con *ws = con_get_workspace(nc);
273 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
275 fs = con_get_fullscreen_con(croot, CF_GLOBAL);
278 DLOG("Not in fullscreen mode, focusing\n");
279 if (!cwindow->dock) {
280 /* Check that the workspace is visible and on the same output as
281 * the current focused container. If the window was assigned to an
282 * invisible workspace, we should not steal focus. */
283 Con *current_output = con_get_output(focused);
284 Con *target_output = con_get_output(ws);
286 if (workspace_is_visible(ws) && current_output == target_output) {
288 } else DLOG("workspace not visible, not focusing\n");
289 } else DLOG("dock, not focusing\n");
291 DLOG("fs = %p, ws = %p, not focusing\n", fs, ws);
292 /* Insert the new container in focus stack *after* the currently
293 * focused (fullscreen) con. This way, the new container will be
294 * focused after we return from fullscreen mode */
295 Con *first = TAILQ_FIRST(&(nc->parent->focus_head));
297 /* We only modify the focus stack if the container is not already
298 * the first one. This can happen when existing containers swallow
299 * new windows, for example when restarting. */
300 TAILQ_REMOVE(&(nc->parent->focus_head), nc, focused);
301 TAILQ_INSERT_AFTER(&(nc->parent->focus_head), first, nc, focused);
305 /* set floating if necessary */
306 bool want_floating = false;
307 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DIALOG) ||
308 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_UTILITY) ||
309 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_TOOLBAR) ||
310 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_SPLASH)) {
311 LOG("This window is a dialog window, setting floating\n");
312 want_floating = true;
317 if (cwindow->transient_for != XCB_NONE ||
318 (cwindow->leader != XCB_NONE &&
319 cwindow->leader != cwindow->id &&
320 con_by_window_id(cwindow->leader) != NULL)) {
321 LOG("This window is transiert for another window, setting floating\n");
322 want_floating = true;
324 if (config.popup_during_fullscreen == PDF_LEAVE_FULLSCREEN &&
326 LOG("There is a fullscreen window, leaving fullscreen mode\n");
327 con_toggle_fullscreen(fs, CF_OUTPUT);
331 /* dock clients cannot be floating, that makes no sense */
333 want_floating = false;
335 /* Store the requested geometry. The width/height gets raised to at least
336 * 75x50 when entering floating mode, which is the minimum size for a
337 * window to be useful (smaller windows are usually overlays/toolbars/…
338 * which are not managed by the wm anyways). We store the original geometry
339 * here because it’s used for dock clients. */
340 nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
343 DLOG("geometry = %d x %d\n", nc->geometry.width, nc->geometry.height);
344 floating_enable(nc, true);
347 /* to avoid getting an UnmapNotify event due to reparenting, we temporarily
348 * declare no interest in any state change event of this window */
349 values[0] = XCB_NONE;
350 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
352 xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
353 if (xcb_request_check(conn, rcookie) != NULL) {
354 LOG("Could not reparent the window, aborting\n");
358 values[0] = CHILD_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
359 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
362 reply = xcb_get_property_reply(conn, state_cookie, NULL);
363 if (xcb_reply_contains_atom(reply, A__NET_WM_STATE_FULLSCREEN))
364 con_toggle_fullscreen(nc, CF_OUTPUT);
368 /* Put the client inside the save set. Upon termination (whether killed or
369 * normal exit does not matter) of the window manager, these clients will
370 * be correctly reparented to their most closest living ancestor (=
372 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
374 /* Check if any assignments match */
375 run_assignments(cwindow);