2 #define I3__FILE__ "manage.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009-2013 Michael Stapelberg and contributors (see also: LICENSE)
9 * manage.c: Initially managing new windows (or existing ones on restart).
13 #include "yajl_utils.h"
15 #include <yajl/yajl_gen.h>
18 * Go through all existing windows (if the window manager is restarted) and manage them
21 void manage_existing_windows(xcb_window_t root) {
22 xcb_query_tree_reply_t *reply;
24 xcb_window_t *children;
25 xcb_get_window_attributes_cookie_t *cookies;
27 /* Get the tree of windows whose parent is the root window (= all) */
28 if ((reply = xcb_query_tree_reply(conn, xcb_query_tree(conn, root), 0)) == NULL)
31 len = xcb_query_tree_children_length(reply);
32 cookies = smalloc(len * sizeof(*cookies));
34 /* Request the window attributes for every window */
35 children = xcb_query_tree_children(reply);
36 for (i = 0; i < len; ++i)
37 cookies[i] = xcb_get_window_attributes(conn, children[i]);
39 /* Call manage_window with the attributes for every window */
40 for (i = 0; i < len; ++i)
41 manage_window(children[i], cookies[i], true);
48 * Restores the geometry of each window by reparenting it to the root window
49 * at the position of its frame.
51 * This is to be called *only* before exiting/restarting i3 because of evil
52 * side-effects which are to be expected when continuing to run i3.
55 void restore_geometry(void) {
56 DLOG("Restoring geometry\n");
59 TAILQ_FOREACH(con, &all_cons, all_cons)
61 DLOG("Re-adding X11 border of %d px\n", con->border_width);
62 con->window_rect.width += (2 * con->border_width);
63 con->window_rect.height += (2 * con->border_width);
64 xcb_set_window_rect(conn, con->window->id, con->window_rect);
65 DLOG("placing window %08x at %d %d\n", con->window->id, con->rect.x, con->rect.y);
66 xcb_reparent_window(conn, con->window->id, root,
67 con->rect.x, con->rect.y);
70 /* Strictly speaking, this line doesn’t really belong here, but since we
71 * are syncing, let’s un-register as a window manager first */
72 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT });
74 /* Make sure our changes reach the X server, we restart/exit now */
79 * The following function sends a new window event, which consists
80 * of fields "change" and "container", the latter containing a dump
81 * of the window's container.
84 static void ipc_send_window_new_event(Con *con) {
85 setlocale(LC_NUMERIC, "C");
86 yajl_gen gen = ygenalloc();
94 dump_node(gen, con, false);
98 const unsigned char *payload;
100 y(get_buf, &payload, &length);
102 ipc_send_event("window", I3_IPC_EVENT_WINDOW, (const char *)payload);
104 setlocale(LC_NUMERIC, "");
108 * Do some sanity checks and then reparent the window.
111 void manage_window(xcb_window_t window, xcb_get_window_attributes_cookie_t cookie,
112 bool needs_to_be_mapped) {
113 xcb_drawable_t d = { window };
114 xcb_get_geometry_cookie_t geomc;
115 xcb_get_geometry_reply_t *geom;
116 xcb_get_window_attributes_reply_t *attr = NULL;
118 xcb_get_property_cookie_t wm_type_cookie, strut_cookie, state_cookie,
119 utf8_title_cookie, title_cookie,
120 class_cookie, leader_cookie, transient_cookie,
121 role_cookie, startup_id_cookie, wm_hints_cookie;
124 geomc = xcb_get_geometry(conn, d);
126 /* Check if the window is mapped (it could be not mapped when intializing and
127 calling manage_window() for every window) */
128 if ((attr = xcb_get_window_attributes_reply(conn, cookie, 0)) == NULL) {
129 DLOG("Could not get attributes\n");
130 xcb_discard_reply(conn, geomc.sequence);
134 if (needs_to_be_mapped && attr->map_state != XCB_MAP_STATE_VIEWABLE) {
135 xcb_discard_reply(conn, geomc.sequence);
139 /* Don’t manage clients with the override_redirect flag */
140 if (attr->override_redirect) {
141 xcb_discard_reply(conn, geomc.sequence);
145 /* Check if the window is already managed */
146 if (con_by_window_id(window) != NULL) {
147 DLOG("already managed (by con %p)\n", con_by_window_id(window));
148 xcb_discard_reply(conn, geomc.sequence);
152 /* Get the initial geometry (position, size, …) */
153 if ((geom = xcb_get_geometry_reply(conn, geomc, 0)) == NULL) {
154 DLOG("could not get geometry\n");
160 /* Set a temporary event mask for the new window, consisting only of
161 * PropertyChange and StructureNotify. We need to be notified of
162 * PropertyChanges because the client can change its properties *after* we
163 * requested them but *before* we actually reparented it and have set our
165 * We need StructureNotify because the client may unmap the window before
166 * we get to re-parent it.
167 * If this request fails, we assume the client has already unmapped the
168 * window between the MapRequest and our event mask change. */
169 values[0] = XCB_EVENT_MASK_PROPERTY_CHANGE |
170 XCB_EVENT_MASK_STRUCTURE_NOTIFY;
171 xcb_void_cookie_t event_mask_cookie =
172 xcb_change_window_attributes_checked(conn, window, XCB_CW_EVENT_MASK, values);
173 if (xcb_request_check(conn, event_mask_cookie) != NULL) {
174 LOG("Could not change event mask, the window probably already disappeared.\n");
178 #define GET_PROPERTY(atom, len) xcb_get_property(conn, false, window, atom, XCB_GET_PROPERTY_TYPE_ANY, 0, len)
180 wm_type_cookie = GET_PROPERTY(A__NET_WM_WINDOW_TYPE, UINT32_MAX);
181 strut_cookie = GET_PROPERTY(A__NET_WM_STRUT_PARTIAL, UINT32_MAX);
182 state_cookie = GET_PROPERTY(A__NET_WM_STATE, UINT32_MAX);
183 utf8_title_cookie = GET_PROPERTY(A__NET_WM_NAME, 128);
184 leader_cookie = GET_PROPERTY(A_WM_CLIENT_LEADER, UINT32_MAX);
185 transient_cookie = GET_PROPERTY(XCB_ATOM_WM_TRANSIENT_FOR, UINT32_MAX);
186 title_cookie = GET_PROPERTY(XCB_ATOM_WM_NAME, 128);
187 class_cookie = GET_PROPERTY(XCB_ATOM_WM_CLASS, 128);
188 role_cookie = GET_PROPERTY(A_WM_WINDOW_ROLE, 128);
189 startup_id_cookie = GET_PROPERTY(A__NET_STARTUP_ID, 512);
190 wm_hints_cookie = xcb_icccm_get_wm_hints(conn, window);
191 /* TODO: also get wm_normal_hints here. implement after we got rid of xcb-event */
193 DLOG("Managing window 0x%08x\n", window);
195 i3Window *cwindow = scalloc(sizeof(i3Window));
196 cwindow->id = window;
197 cwindow->depth = get_visual_depth(attr->visual);
199 /* We need to grab the mouse buttons for click to focus */
200 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
201 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
202 1 /* left mouse button */,
203 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
205 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
206 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
207 2 /* middle mouse button */,
208 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
210 xcb_grab_button(conn, false, window, XCB_EVENT_MASK_BUTTON_PRESS,
211 XCB_GRAB_MODE_SYNC, XCB_GRAB_MODE_ASYNC, root, XCB_NONE,
212 3 /* right mouse button */,
213 XCB_BUTTON_MASK_ANY /* don’t filter for any modifiers */);
215 /* update as much information as possible so far (some replies may be NULL) */
216 window_update_class(cwindow, xcb_get_property_reply(conn, class_cookie, NULL), true);
217 window_update_name_legacy(cwindow, xcb_get_property_reply(conn, title_cookie, NULL), true);
218 window_update_name(cwindow, xcb_get_property_reply(conn, utf8_title_cookie, NULL), true);
219 window_update_leader(cwindow, xcb_get_property_reply(conn, leader_cookie, NULL));
220 window_update_transient_for(cwindow, xcb_get_property_reply(conn, transient_cookie, NULL));
221 window_update_strut_partial(cwindow, xcb_get_property_reply(conn, strut_cookie, NULL));
222 window_update_role(cwindow, xcb_get_property_reply(conn, role_cookie, NULL), true);
223 window_update_hints(cwindow, xcb_get_property_reply(conn, wm_hints_cookie, NULL));
225 xcb_get_property_reply_t *startup_id_reply;
226 startup_id_reply = xcb_get_property_reply(conn, startup_id_cookie, NULL);
227 char *startup_ws = startup_workspace_for_window(cwindow, startup_id_reply);
228 DLOG("startup workspace = %s\n", startup_ws);
230 /* check if the window needs WM_TAKE_FOCUS */
231 cwindow->needs_take_focus = window_supports_protocol(cwindow->id, A_WM_TAKE_FOCUS);
233 /* Where to start searching for a container that swallows the new one? */
234 Con *search_at = croot;
236 xcb_get_property_reply_t *reply = xcb_get_property_reply(conn, wm_type_cookie, NULL);
237 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DOCK)) {
238 LOG("This window is of type dock\n");
239 Output *output = get_output_containing(geom->x, geom->y);
240 if (output != NULL) {
241 DLOG("Starting search at output %s\n", output->name);
242 search_at = output->con;
245 /* find out the desired position of this dock window */
246 if (cwindow->reserved.top > 0 && cwindow->reserved.bottom == 0) {
247 DLOG("Top dock client\n");
248 cwindow->dock = W_DOCK_TOP;
249 } else if (cwindow->reserved.top == 0 && cwindow->reserved.bottom > 0) {
250 DLOG("Bottom dock client\n");
251 cwindow->dock = W_DOCK_BOTTOM;
253 DLOG("Ignoring invalid reserved edges (_NET_WM_STRUT_PARTIAL), using position as fallback:\n");
254 if (geom->y < (search_at->rect.height / 2)) {
255 DLOG("geom->y = %d < rect.height / 2 = %d, it is a top dock client\n",
256 geom->y, (search_at->rect.height / 2));
257 cwindow->dock = W_DOCK_TOP;
259 DLOG("geom->y = %d >= rect.height / 2 = %d, it is a bottom dock client\n",
260 geom->y, (search_at->rect.height / 2));
261 cwindow->dock = W_DOCK_BOTTOM;
266 DLOG("Initial geometry: (%d, %d, %d, %d)\n", geom->x, geom->y, geom->width, geom->height);
270 Assignment *assignment;
272 /* TODO: two matches for one container */
274 /* See if any container swallows this new window */
275 nc = con_for_window(search_at, cwindow, &match);
277 /* If not, check if it is assigned to a specific workspace / output */
278 if ((assignment = assignment_for(cwindow, A_TO_WORKSPACE | A_TO_OUTPUT))) {
279 DLOG("Assignment matches (%p)\n", match);
280 if (assignment->type == A_TO_WORKSPACE) {
281 nc = con_descend_tiling_focused(workspace_get(assignment->dest.workspace, NULL));
282 DLOG("focused on ws %s: %p / %s\n", assignment->dest.workspace, nc, nc->name);
283 if (nc->type == CT_WORKSPACE)
284 nc = tree_open_con(nc, cwindow);
285 else nc = tree_open_con(nc->parent, cwindow);
287 /* TODO: handle assignments with type == A_TO_OUTPUT */
288 } else if (startup_ws) {
289 /* If it’s not assigned, but was started on a specific workspace,
290 * we want to open it there */
291 DLOG("Using workspace on which this application was started (%s)\n", startup_ws);
292 nc = con_descend_tiling_focused(workspace_get(startup_ws, NULL));
293 DLOG("focused on ws %s: %p / %s\n", startup_ws, nc, nc->name);
294 if (nc->type == CT_WORKSPACE)
295 nc = tree_open_con(nc, cwindow);
296 else nc = tree_open_con(nc->parent, cwindow);
298 /* If not, insert it at the currently focused position */
299 if (focused->type == CT_CON && con_accepts_window(focused)) {
300 LOG("using current container, focused = %p, focused->name = %s\n",
301 focused, focused->name);
303 } else nc = tree_open_con(NULL, cwindow);
306 /* M_BELOW inserts the new window as a child of the one which was
307 * matched (e.g. dock areas) */
308 if (match != NULL && match->insert_where == M_BELOW) {
309 nc = tree_open_con(nc, cwindow);
313 DLOG("new container = %p\n", nc);
314 nc->window = cwindow;
317 nc->border_width = geom->border_width;
320 sasprintf(&name, "[i3 con] container around %p", cwindow);
321 x_set_name(nc, name);
324 Con *ws = con_get_workspace(nc);
325 Con *fs = (ws ? con_get_fullscreen_con(ws, CF_OUTPUT) : NULL);
327 fs = con_get_fullscreen_con(croot, CF_GLOBAL);
330 DLOG("Not in fullscreen mode, focusing\n");
331 if (!cwindow->dock) {
332 /* Check that the workspace is visible and on the same output as
333 * the current focused container. If the window was assigned to an
334 * invisible workspace, we should not steal focus. */
335 Con *current_output = con_get_output(focused);
336 Con *target_output = con_get_output(ws);
338 if (workspace_is_visible(ws) && current_output == target_output) {
339 if (!match || !match->restart_mode) {
341 } else DLOG("not focusing, matched with restart_mode == true\n");
342 } else DLOG("workspace not visible, not focusing\n");
343 } else DLOG("dock, not focusing\n");
345 DLOG("fs = %p, ws = %p, not focusing\n", fs, ws);
346 /* Insert the new container in focus stack *after* the currently
347 * focused (fullscreen) con. This way, the new container will be
348 * focused after we return from fullscreen mode */
349 Con *first = TAILQ_FIRST(&(nc->parent->focus_head));
351 /* We only modify the focus stack if the container is not already
352 * the first one. This can happen when existing containers swallow
353 * new windows, for example when restarting. */
354 TAILQ_REMOVE(&(nc->parent->focus_head), nc, focused);
355 TAILQ_INSERT_AFTER(&(nc->parent->focus_head), first, nc, focused);
359 /* set floating if necessary */
360 bool want_floating = false;
361 if (xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_DIALOG) ||
362 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_UTILITY) ||
363 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_TOOLBAR) ||
364 xcb_reply_contains_atom(reply, A__NET_WM_WINDOW_TYPE_SPLASH)) {
365 LOG("This window is a dialog window, setting floating\n");
366 want_floating = true;
371 if (cwindow->transient_for != XCB_NONE ||
372 (cwindow->leader != XCB_NONE &&
373 cwindow->leader != cwindow->id &&
374 con_by_window_id(cwindow->leader) != NULL)) {
375 LOG("This window is transient for another window, setting floating\n");
376 want_floating = true;
378 if (config.popup_during_fullscreen == PDF_LEAVE_FULLSCREEN &&
380 LOG("There is a fullscreen window, leaving fullscreen mode\n");
381 con_toggle_fullscreen(fs, CF_OUTPUT);
382 } else if (config.popup_during_fullscreen == PDF_SMART &&
384 fs->window != NULL) {
385 i3Window *transient_win = cwindow;
386 while (transient_win != NULL &&
387 transient_win->transient_for != XCB_NONE) {
388 if (transient_win->transient_for == fs->window->id) {
389 LOG("This floating window belongs to the fullscreen window (popup_during_fullscreen == smart)\n");
393 Con *next_transient = con_by_window_id(transient_win->transient_for);
394 if (next_transient == NULL)
396 transient_win = next_transient->window;
401 /* dock clients cannot be floating, that makes no sense */
403 want_floating = false;
405 /* Store the requested geometry. The width/height gets raised to at least
406 * 75x50 when entering floating mode, which is the minimum size for a
407 * window to be useful (smaller windows are usually overlays/toolbars/…
408 * which are not managed by the wm anyways). We store the original geometry
409 * here because it’s used for dock clients. */
410 nc->geometry = (Rect){ geom->x, geom->y, geom->width, geom->height };
413 DLOG("geometry = %d x %d\n", nc->geometry.width, nc->geometry.height);
414 floating_enable(nc, true);
417 /* to avoid getting an UnmapNotify event due to reparenting, we temporarily
418 * declare no interest in any state change event of this window */
419 values[0] = XCB_NONE;
420 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
422 xcb_void_cookie_t rcookie = xcb_reparent_window_checked(conn, window, nc->frame, 0, 0);
423 if (xcb_request_check(conn, rcookie) != NULL) {
424 LOG("Could not reparent the window, aborting\n");
428 values[0] = CHILD_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
429 xcb_change_window_attributes(conn, window, XCB_CW_EVENT_MASK, values);
432 reply = xcb_get_property_reply(conn, state_cookie, NULL);
433 if (xcb_reply_contains_atom(reply, A__NET_WM_STATE_FULLSCREEN))
434 con_toggle_fullscreen(nc, CF_OUTPUT);
438 /* Put the client inside the save set. Upon termination (whether killed or
439 * normal exit does not matter) of the window manager, these clients will
440 * be correctly reparented to their most closest living ancestor (=
442 xcb_change_save_set(conn, XCB_SET_MODE_INSERT, window);
444 /* Check if any assignments match */
445 run_assignments(cwindow);
447 /* 'ws' may be invalid because of the assignments, e.g. when the user uses
448 * "move window to workspace 1", but had it assigned to workspace 2. */
449 ws = con_get_workspace(nc);
451 /* If this window was put onto an invisible workspace (via assignments), we
452 * render this workspace. It wouldn’t be rendered in our normal code path
453 * because only the visible workspaces get rendered.
455 * By rendering the workspace, we assign proper coordinates (read: not
456 * width=0, height=0) to the window, which is important for windows who
457 * actually use them to position their GUI elements, e.g. rhythmbox. */
458 if (ws && !workspace_is_visible(ws)) {
459 /* This is a bit hackish: we need to copy the content container’s rect
460 * to the workspace, because calling render_con() on the content
461 * container would also take the shortcut and not render the invisible
462 * workspace at all. However, just calling render_con() on the
463 * workspace isn’t enough either — it needs the rect. */
464 ws->rect = ws->parent->rect;
465 render_con(ws, true);
469 /* Send an event about window creation */
470 ipc_send_window_new_event(nc);