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: 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");
122 /* Set a temporary event mask for the new window, consisting only of
123 * PropertyChange. We need to be notified of PropertyChanges because the
124 * client can change its properties *after* we requested them but *before*
125 * we actually reparented it and have set our final event mask. */
126 values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE;
127 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
129 #define GET_PROPERTY(atom, len) xcb_get_property_unchecked(conn, false, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, len)
131 wm_type_cookie = GET_PROPERTY(A__NET_WM_WINDOW_TYPE, UINT32_MAX);
132 strut_cookie = GET_PROPERTY(A__NET_WM_STRUT_PARTIAL, UINT32_MAX);
133 state_cookie = GET_PROPERTY(A__NET_WM_STATE, UINT32_MAX);
134 utf8_title_cookie = GET_PROPERTY(A__NET_WM_NAME, 128);
135 leader_cookie = GET_PROPERTY(A_WM_CLIENT_LEADER, UINT32_MAX);
136 transient_cookie = GET_PROPERTY(A_WM_TRANSIENT_FOR, UINT32_MAX);
137 title_cookie = GET_PROPERTY(A_WM_NAME, 128);
138 class_cookie = GET_PROPERTY(A_WM_CLASS, 128);
139 /* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
141 DLOG("reparenting!\n");
143 i3Window *cwindow = scalloc(sizeof(i3Window));
144 cwindow->id = window;
146 /* We need to grab the mouse buttons for click to focus */
147 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
148 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
149 1 /* left mouse button */,
150 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
152 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
153 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
154 3 /* right mouse button */,
155 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
158 /* update as much information as possible so far (some replies may be NULL) */
159 window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL), true);
160 window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL), true);
161 window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL), true);
162 window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
163 window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
164 window_update_strut_partial(cwindow, xcb_get_property_reply(conn, strut_cookie, NULL));
166 /* check if the window needs WM_TAKE_FOCUS */
167 cwindow->needs_take_focus = window_supports_protocol(cwindow->id, A_WM_TAKE_FOCUS);
169 /* Where to start searching for a container that swallows the new one? */
170 Con *search_at = croot;
172 xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
173 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DOCK)) {
174 LOG("This window is of type dock\n");
175 Output *output = get_output_containing(geom->x, geom->y);
176 if (output != NULL) {
177 DLOG("Starting search at output %s\n", output->name);
178 search_at = output->con;
181 /* find out the desired position of this dock window */
182 if (cwindow->reserved.top > 0 && cwindow->reserved.bottom == 0) {
183 DLOG("Top dock client\n");
184 cwindow->dock = W_DOCK_TOP;
185 } else if (cwindow->reserved.top == 0 && cwindow->reserved.bottom > 0) {
186 DLOG("Bottom dock client\n");
187 cwindow->dock = W_DOCK_BOTTOM;
189 DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
190 if (geom->y < (search_at->rect.height / 2)) {
191 DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
192 geom->y, (search_at->rect.height / 2));
193 cwindow->dock = W_DOCK_TOP;
195 DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
196 geom->y, (search_at->rect.height / 2));
197 cwindow->dock = W_DOCK_BOTTOM;
202 DLOG("Initial geometry: (%d, %d, %d, %d)\n", geom->x, geom->y, geom->width, geom->height);
206 Assignment *assignment;
208 /* TODO: two matches for one container */
210 /* See if any container swallows this new window */
211 nc = con_for_window(search_at, cwindow, &match);
213 /* If not, check if it is assigned to a specific workspace / output */
214 if ((assignment = assignment_for(cwindow, A_TO_WORKSPACE | A_TO_OUTPUT))) {
215 DLOG("Assignment matches (%p)\n", match);
216 if (assignment->type == A_TO_WORKSPACE) {
217 nc = con_descend_focused(workspace_get(assignment->dest.workspace, NULL));
218 DLOG("focused on ws %s: %p / %s\n", assignment->dest.workspace, nc, nc->name);
219 if (nc->type == CT_WORKSPACE)
220 nc = tree_open_con(nc, cwindow);
221 else nc = tree_open_con(nc->parent, cwindow);
223 /* TODO: handle assignments with type == A_TO_OUTPUT */
225 /* If not, insert it at the currently focused position */
226 if (focused->type == CT_CON && con_accepts_window(focused)) {
227 LOG("using current container, focused = %p, focused->name = %s\n",
228 focused, focused->name);
230 } else nc = tree_open_con(NULL, cwindow);
233 /* M_BELOW inserts the new window as a child of the one which was
234 * matched (e.g. dock areas) */
235 if (match != NULL && match->insert_where == M_BELOW) {
236 nc = tree_open_con(nc, cwindow);
240 DLOG("new container = %p\n", nc);
241 nc->window = cwindow;
244 nc->border_width = geom->border_width;
247 asprintf(&name, "[i3 con] container around %p", cwindow);
248 x_set_name(nc, name);
251 Con *ws = con_get_workspace(nc);
252 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
254 fs = con_get_fullscreen_con(croot, CF_GLOBAL);
257 DLOG("Not in fullscreen mode, focusing\n");
260 else DLOG("dock, not focusing\n");
262 DLOG("fs = %p, ws = %p, not focusing\n", fs, ws);
263 /* Insert the new container in focus stack *after* the currently
264 * focused (fullscreen) con. This way, the new container will be
265 * focused after we return from fullscreen mode */
266 Con *first = TAILQ_FIRST(&(nc->parent->focus_head));
268 /* We only modify the focus stack if the container is not already
269 * the first one. This can happen when existing containers swallow
270 * new windows, for example when restarting. */
271 TAILQ_REMOVE(&(nc->parent->focus_head), nc, focused);
272 TAILQ_INSERT_AFTER(&(nc->parent->focus_head), first, nc, focused);
276 /* set floating if necessary */
277 bool want_floating = false;
278 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DIALOG) ||
279 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_UTILITY) ||
280 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_TOOLBAR) ||
281 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_SPLASH)) {
282 LOG("This window is a dialog window, setting floating\n");
283 want_floating = true;
286 if (cwindow->transient_for != XCB_NONE ||
287 (cwindow->leader != XCB_NONE &&
288 cwindow->leader != cwindow->id &&
289 con_by_window_id(cwindow->leader) != NULL)) {
290 LOG("This window is transiert for another window, setting floating\n");
291 want_floating = true;
293 if (config.popup_during_fullscreen == PDF_LEAVE_FULLSCREEN &&
295 LOG("There is a fullscreen window, leaving fullscreen mode\n");
296 con_toggle_fullscreen(fs, CF_OUTPUT);
300 /* dock clients cannot be floating, that makes no sense */
302 want_floating = false;
304 /* Store the requested geometry. The width/height gets raised to at least
305 * 75x50 when entering floating mode, which is the minimum size for a
306 * window to be useful (smaller windows are usually overlays/toolbars/…
307 * which are not managed by the wm anyways). We store the original geometry
308 * here because it’s used for dock clients. */
309 nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
312 DLOG("geometry = %d x %d\n", nc->geometry.width, nc->geometry.height);
313 floating_enable(nc, false);
316 /* to avoid getting an UnmapNotify event due to reparenting, we temporarily
317 * declare no interest in any state change event of this window */
318 values[0] = XCB_NONE;
319 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
321 xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
322 if (xcb_request_check(conn, rcookie) != NULL) {
323 LOG("Could not reparent the window, aborting\n");
327 values[0] = CHILD_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
328 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
331 reply = xcb_get_property_reply(conn, state_cookie, NULL);
332 if (xcb_reply_contains_atom(reply, A__NET_WM_STATE_FULLSCREEN))
333 con_toggle_fullscreen(nc, CF_OUTPUT);
335 /* Put the client inside the save set. Upon termination (whether killed or
336 * normal exit does not matter) of the window manager, these clients will
337 * be correctly reparented to their most closest living ancestor (=
339 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
341 /* Check if any assignments match */
342 run_assignments(cwindow);