2 #define I3__FILE__ "manage.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
9 * manage.c: Initially managing new windows (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(void) {
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 = NULL;
82 xcb_get_property_cookie_t wm_type_cookie, strut_cookie, state_cookie,
83 utf8_title_cookie, title_cookie,
84 class_cookie, leader_cookie, transient_cookie,
85 role_cookie, startup_id_cookie, wm_hints_cookie;
88 geomc = xcb_get_geometry(conn, d);
89 #define FREE_GEOMETRY() do { \
90 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) != NULL) \
94 /* Check if the window is mapped (it could be not mapped when intializing and
95 calling manage_window() for every window) */
96 if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
97 DLOG("Could not get attributes\n");
102 if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE) {
107 /* Don’t manage clients with the override_redirect flag */
108 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));
120 /* Get the initial geometry (position, size, …) */
121 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL) {
122 DLOG("could not get geometry\n");
128 /* Set a temporary event mask for the new window, consisting only of
129 * PropertyChange and StructureNotify. We need to be notified of
130 * PropertyChanges because the client can change its properties *after* we
131 * requested them but *before* we actually reparented it and have set our
133 * We need StructureNotify because the client may unmap the window before
134 * we get to re-parent it.
135 * If this request fails, we assume the client has already unmapped the
136 * window between the MapRequest and our event mask change. */
137 values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE |
138 XCB_EVENT_MASK_STRUCTURE_NOTIFY;
139 xcb_void_cookie_t event_mask_cookie =
140 xcb_change_window_attributes_checked(conn, window, XCB_CW_EVENT_MASK, values);
141 if (xcb_request_check(conn, event_mask_cookie) != NULL) {
142 LOG("Could not change event mask, the window probably already disappeared.\n");
146 #define GET_PROPERTY(atom, len) xcb_get_property(conn, false, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, len)
148 wm_type_cookie = GET_PROPERTY(A__NET_WM_WINDOW_TYPE, UINT32_MAX);
149 strut_cookie = GET_PROPERTY(A__NET_WM_STRUT_PARTIAL, UINT32_MAX);
150 state_cookie = GET_PROPERTY(A__NET_WM_STATE, UINT32_MAX);
151 utf8_title_cookie = GET_PROPERTY(A__NET_WM_NAME, 128);
152 leader_cookie = GET_PROPERTY(A_WM_CLIENT_LEADER, UINT32_MAX);
153 transient_cookie = GET_PROPERTY(XCB_ATOM_WM_TRANSIENT_FOR, UINT32_MAX);
154 title_cookie = GET_PROPERTY(XCB_ATOM_WM_NAME, 128);
155 class_cookie = GET_PROPERTY(XCB_ATOM_WM_CLASS, 128);
156 role_cookie = GET_PROPERTY(A_WM_WINDOW_ROLE, 128);
157 startup_id_cookie = GET_PROPERTY(A__NET_STARTUP_ID, 512);
158 wm_hints_cookie = xcb_icccm_get_wm_hints(conn, window);
159 /* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
161 DLOG("Managing window 0x%08x\n", window);
163 i3Window *cwindow = scalloc(sizeof(i3Window));
164 cwindow->id = window;
165 cwindow->depth = get_visual_depth(attr->visual);
167 /* We need to grab the mouse buttons for click to focus */
168 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
169 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
170 1 /* left mouse button */,
171 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
173 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
174 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
175 2 /* middle mouse button */,
176 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
178 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
179 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
180 3 /* right mouse button */,
181 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
183 /* update as much information as possible so far (some replies may be NULL) */
184 window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL), true);
185 window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL), true);
186 window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL), true);
187 window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
188 window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
189 window_update_strut_partial(cwindow, xcb_get_property_reply(conn, strut_cookie, NULL));
190 window_update_role(cwindow, xcb_get_property_reply(conn, role_cookie, NULL), true);
191 window_update_hints(cwindow, xcb_get_property_reply(conn, wm_hints_cookie, NULL));
193 xcb_get_property_reply_t *startup_id_reply;
194 startup_id_reply = xcb_get_property_reply(conn, startup_id_cookie, NULL);
195 char *startup_ws = startup_workspace_for_window(cwindow, startup_id_reply);
196 DLOG("startup workspace = %s\n", startup_ws);
198 /* check if the window needs WM_TAKE_FOCUS */
199 cwindow->needs_take_focus = window_supports_protocol(cwindow->id, A_WM_TAKE_FOCUS);
201 /* Where to start searching for a container that swallows the new one? */
202 Con *search_at = croot;
204 xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
205 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DOCK)) {
206 LOG("This window is of type dock\n");
207 Output *output = get_output_containing(geom->x, geom->y);
208 if (output != NULL) {
209 DLOG("Starting search at output %s\n", output->name);
210 search_at = output->con;
213 /* find out the desired position of this dock window */
214 if (cwindow->reserved.top > 0 && cwindow->reserved.bottom == 0) {
215 DLOG("Top dock client\n");
216 cwindow->dock = W_DOCK_TOP;
217 } else if (cwindow->reserved.top == 0 && cwindow->reserved.bottom > 0) {
218 DLOG("Bottom dock client\n");
219 cwindow->dock = W_DOCK_BOTTOM;
221 DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
222 if (geom->y < (search_at->rect.height / 2)) {
223 DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
224 geom->y, (search_at->rect.height / 2));
225 cwindow->dock = W_DOCK_TOP;
227 DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
228 geom->y, (search_at->rect.height / 2));
229 cwindow->dock = W_DOCK_BOTTOM;
234 DLOG("Initial geometry: (%d, %d, %d, %d)\n", geom->x, geom->y, geom->width, geom->height);
238 Assignment *assignment;
240 /* TODO: two matches for one container */
242 /* See if any container swallows this new window */
243 nc = con_for_window(search_at, cwindow, &match);
245 /* If not, check if it is assigned to a specific workspace / output */
246 if ((assignment = assignment_for(cwindow, A_TO_WORKSPACE | A_TO_OUTPUT))) {
247 DLOG("Assignment matches (%p)\n", match);
248 if (assignment->type == A_TO_WORKSPACE) {
249 nc = con_descend_tiling_focused(workspace_get(assignment->dest.workspace, NULL));
250 DLOG("focused on ws %s: %p / %s\n", assignment->dest.workspace, nc, nc->name);
251 if (nc->type == CT_WORKSPACE)
252 nc = tree_open_con(nc, cwindow);
253 else nc = tree_open_con(nc->parent, cwindow);
255 /* TODO: handle assignments with type == A_TO_OUTPUT */
256 } else if (startup_ws) {
257 /* If it’s not assigned, but was started on a specific workspace,
258 * we want to open it there */
259 DLOG("Using workspace on which this application was started (%s)\n", startup_ws);
260 nc = con_descend_tiling_focused(workspace_get(startup_ws, NULL));
261 DLOG("focused on ws %s: %p / %s\n", startup_ws, nc, nc->name);
262 if (nc->type == CT_WORKSPACE)
263 nc = tree_open_con(nc, cwindow);
264 else nc = tree_open_con(nc->parent, cwindow);
266 /* If not, insert it at the currently focused position */
267 if (focused->type == CT_CON && con_accepts_window(focused)) {
268 LOG("using current container, focused = %p, focused->name = %s\n",
269 focused, focused->name);
271 } else nc = tree_open_con(NULL, cwindow);
274 /* M_BELOW inserts the new window as a child of the one which was
275 * matched (e.g. dock areas) */
276 if (match != NULL && match->insert_where == M_BELOW) {
277 nc = tree_open_con(nc, cwindow);
281 DLOG("new container = %p\n", nc);
282 nc->window = cwindow;
285 nc->border_width = geom->border_width;
288 sasprintf(&name, "[i3 con] container around %p", cwindow);
289 x_set_name(nc, name);
292 Con *ws = con_get_workspace(nc);
293 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
295 fs = con_get_fullscreen_con(croot, CF_GLOBAL);
298 DLOG("Not in fullscreen mode, focusing\n");
299 if (!cwindow->dock) {
300 /* Check that the workspace is visible and on the same output as
301 * the current focused container. If the window was assigned to an
302 * invisible workspace, we should not steal focus. */
303 Con *current_output = con_get_output(focused);
304 Con *target_output = con_get_output(ws);
306 if (workspace_is_visible(ws) && current_output == target_output) {
307 if (!match || !match->restart_mode) {
309 } else DLOG("not focusing, matched with restart_mode == true\n");
310 } else DLOG("workspace not visible, not focusing\n");
311 } else DLOG("dock, not focusing\n");
313 DLOG("fs = %p, ws = %p, not focusing\n", fs, ws);
314 /* Insert the new container in focus stack *after* the currently
315 * focused (fullscreen) con. This way, the new container will be
316 * focused after we return from fullscreen mode */
317 Con *first = TAILQ_FIRST(&(nc->parent->focus_head));
319 /* We only modify the focus stack if the container is not already
320 * the first one. This can happen when existing containers swallow
321 * new windows, for example when restarting. */
322 TAILQ_REMOVE(&(nc->parent->focus_head), nc, focused);
323 TAILQ_INSERT_AFTER(&(nc->parent->focus_head), first, nc, focused);
327 /* set floating if necessary */
328 bool want_floating = false;
329 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DIALOG) ||
330 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_UTILITY) ||
331 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_TOOLBAR) ||
332 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_SPLASH)) {
333 LOG("This window is a dialog window, setting floating\n");
334 want_floating = true;
339 if (cwindow->transient_for != XCB_NONE ||
340 (cwindow->leader != XCB_NONE &&
341 cwindow->leader != cwindow->id &&
342 con_by_window_id(cwindow->leader) != NULL)) {
343 LOG("This window is transient for another window, setting floating\n");
344 want_floating = true;
346 if (config.popup_during_fullscreen == PDF_LEAVE_FULLSCREEN &&
348 LOG("There is a fullscreen window, leaving fullscreen mode\n");
349 con_toggle_fullscreen(fs, CF_OUTPUT);
350 } else if (config.popup_during_fullscreen == PDF_SMART &&
352 fs->window != NULL &&
353 fs->window->id == cwindow->transient_for) {
354 LOG("This floating window belongs to the fullscreen window (popup_during_fullscreen == smart)\n");
359 /* dock clients cannot be floating, that makes no sense */
361 want_floating = false;
363 /* Store the requested geometry. The width/height gets raised to at least
364 * 75x50 when entering floating mode, which is the minimum size for a
365 * window to be useful (smaller windows are usually overlays/toolbars/…
366 * which are not managed by the wm anyways). We store the original geometry
367 * here because it’s used for dock clients. */
368 nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
371 DLOG("geometry = %d x %d\n", nc->geometry.width, nc->geometry.height);
372 floating_enable(nc, true);
375 /* to avoid getting an UnmapNotify event due to reparenting, we temporarily
376 * declare no interest in any state change event of this window */
377 values[0] = XCB_NONE;
378 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
380 xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
381 if (xcb_request_check(conn, rcookie) != NULL) {
382 LOG("Could not reparent the window, aborting\n");
386 values[0] = CHILD_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
387 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
390 reply = xcb_get_property_reply(conn, state_cookie, NULL);
391 if (xcb_reply_contains_atom(reply, A__NET_WM_STATE_FULLSCREEN))
392 con_toggle_fullscreen(nc, CF_OUTPUT);
396 /* Put the client inside the save set. Upon termination (whether killed or
397 * normal exit does not matter) of the window manager, these clients will
398 * be correctly reparented to their most closest living ancestor (=
400 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
402 /* Check if any assignments match */
403 run_assignments(cwindow);
405 /* If this window was put onto an invisible workspace (via assignments), we
406 * render this workspace. It wouldn’t be rendered in our normal code path
407 * because only the visible workspaces get rendered.
409 * By rendering the workspace, we assign proper coordinates (read: not
410 * width=0, height=0) to the window, which is important for windows who
411 * actually use them to position their GUI elements, e.g. rhythmbox. */
412 if (ws && !workspace_is_visible(ws)) {
413 /* This is a bit hackish: we need to copy the content container’s rect
414 * to the workspace, because calling render_con() on the content
415 * container would also take the shortcut and not render the invisible
416 * workspace at all. However, just calling render_con() on the
417 * workspace isn’t enough either — it needs the rect. */
418 ws->rect = ws->parent->rect;
419 render_con(ws, true);