2 * vim:ts=4:sw=4:expandtab
7 /* Stores the X11 window ID of the currently focused window */
8 xcb_window_t focused_id = XCB_NONE;
11 * Describes the X11 state we may modify (map state, position, window stack).
12 * There is one entry per container. The state represents the current situation
13 * as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
14 * which represents the order that will be pushed to X11, while old_state_head
15 * represents the current order). It will be updated in x_push_changes().
18 typedef struct con_state {
24 /* For reparenting, we have a flag (need_reparent) and the X ID of the old
25 * frame this window was in. The latter is necessary because we need to
26 * ignore UnmapNotify events (by changing the window event mask). */
28 xcb_window_t old_frame;
37 CIRCLEQ_ENTRY(con_state) state;
38 CIRCLEQ_ENTRY(con_state) old_state;
41 CIRCLEQ_HEAD(state_head, con_state) state_head =
42 CIRCLEQ_HEAD_INITIALIZER(state_head);
44 CIRCLEQ_HEAD(old_state_head, con_state) old_state_head =
45 CIRCLEQ_HEAD_INITIALIZER(old_state_head);
48 * Returns the container state for the given frame. This function always
49 * returns a container state (otherwise, there is a bug in the code and the
50 * container state of a container for which x_con_init() was not called was
54 static con_state *state_for_frame(xcb_window_t window) {
56 CIRCLEQ_FOREACH(state, &state_head, state)
57 if (state->id == window)
60 /* TODO: better error handling? */
61 ELOG("No state found\n");
67 * Initializes the X11 part for the given container. Called exactly once for
68 * every container from con_new().
71 void x_con_init(Con *con) {
72 /* TODO: maybe create the window when rendering first? we could then even
73 * get the initial geometry right */
78 /* our own frames should not be managed */
79 mask |= XCB_CW_OVERRIDE_REDIRECT;
82 /* see include/xcb.h for the FRAME_EVENT_MASK */
83 mask |= XCB_CW_EVENT_MASK;
84 values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
86 Rect dims = { -15, -15, 10, 10 };
87 con->frame = create_window(conn, dims, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
89 struct con_state *state = scalloc(sizeof(struct con_state));
90 state->id = con->frame;
91 state->mapped = false;
92 state->initial = true;
93 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
94 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
95 DLOG("adding new state for window id 0x%08x\n", state->id);
99 * Re-initializes the associated X window state for this container. You have
100 * to call this when you assign a client to an empty container to ensure that
101 * its state gets updated correctly.
104 void x_reinit(Con *con) {
105 struct con_state *state;
107 if ((state = state_for_frame(con->frame)) == NULL) {
108 ELOG("window state not found\n");
112 DLOG("resetting state %p to initial\n", state);
113 state->initial = true;
114 state->child_mapped = false;
115 memset(&(state->window_rect), 0, sizeof(Rect));
119 * Reparents the child window of the given container (necessary for sticky
120 * containers). The reparenting happens in the next call of x_push_changes().
123 void x_reparent_child(Con *con, Con *old) {
124 struct con_state *state;
125 if ((state = state_for_frame(con->frame)) == NULL) {
126 ELOG("window state for con not found\n");
130 state->need_reparent = true;
131 state->old_frame = old->frame;
135 * Moves a child window from Container src to Container dest.
138 void x_move_win(Con *src, Con *dest) {
139 struct con_state *state_src, *state_dest;
141 if ((state_src = state_for_frame(src->frame)) == NULL) {
142 ELOG("window state for src not found\n");
146 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
147 ELOG("window state for dest not found\n");
151 Rect zero = { 0, 0, 0, 0 };
152 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
153 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
154 DLOG("COPYING RECT\n");
159 * Kills the window decoration associated with the given container.
162 void x_con_kill(Con *con) {
165 xcb_destroy_window(conn, con->frame);
166 xcb_free_pixmap(conn, con->pixmap);
167 xcb_free_gc(conn, con->pm_gc);
168 state = state_for_frame(con->frame);
169 CIRCLEQ_REMOVE(&state_head, state, state);
170 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
174 /* Invalidate focused_id to correctly focus new windows with the same ID */
175 focused_id = XCB_NONE;
179 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
182 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
183 xcb_get_property_cookie_t cookie;
184 xcb_icccm_get_wm_protocols_reply_t protocols;
187 cookie = xcb_icccm_get_wm_protocols_unchecked(conn, window, A_WM_PROTOCOLS);
188 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
191 /* Check if the client’s protocols have the requested atom set */
192 for (uint32_t i = 0; i < protocols.atoms_len; i++)
193 if (protocols.atoms[i] == atom)
196 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
202 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
205 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
206 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
207 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
208 if (kill_window == KILL_WINDOW) {
209 LOG("Killing specific window 0x%08x\n", window);
210 xcb_destroy_window(conn, window);
212 LOG("Killing the X11 client which owns window 0x%08x\n", window);
213 xcb_kill_client(conn, window);
218 xcb_client_message_event_t ev;
220 memset(&ev, 0, sizeof(xcb_client_message_event_t));
222 ev.response_type = XCB_CLIENT_MESSAGE;
224 ev.type = A_WM_PROTOCOLS;
226 ev.data.data32[0] = A_WM_DELETE_WINDOW;
227 ev.data.data32[1] = XCB_CURRENT_TIME;
229 LOG("Sending WM_DELETE to the client\n");
230 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)&ev);
235 * Draws the decoration of the given container onto its parent.
238 void x_draw_decoration(Con *con) {
239 Con *parent = con->parent;
240 /* This code needs to run for:
242 * • non-leaf containers which are in a stacked/tabbed container
244 * It does not need to run for:
245 * • floating containers (they don’t have a decoration)
247 if ((!con_is_leaf(con) &&
248 parent->layout != L_STACKED &&
249 parent->layout != L_TABBED) ||
250 con->type == CT_FLOATING_CON)
252 DLOG("decoration should be rendered for con %p\n", con);
254 /* Skip containers whose height is 0 (for example empty dockareas) */
255 if (con->rect.height == 0) {
256 DLOG("height == 0, not rendering\n");
260 /* Skip containers whose pixmap has not yet been created (can happen when
261 * decoration rendering happens recursively for a window for which
262 * x_push_node() was not yet called) */
263 if (con->pixmap == XCB_NONE) {
264 DLOG("pixmap not yet created, not rendering\n");
268 /* 1: build deco_params and compare with cache */
269 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
271 /* find out which colors to use */
273 p->color = &config.client.urgent;
274 else if (con == focused)
275 p->color = &config.client.focused;
276 else if (con == TAILQ_FIRST(&(parent->focus_head)))
277 p->color = &config.client.focused_inactive;
279 p->color = &config.client.unfocused;
281 p->border_style = con_border_style(con);
283 Rect *r = &(con->rect);
284 Rect *w = &(con->window_rect);
285 p->con_rect = (struct width_height){ r->width, r->height };
286 p->con_window_rect = (struct width_height){ w->width, w->height };
287 p->con_deco_rect = con->deco_rect;
288 p->background = config.client.background;
289 p->con_is_leaf = con_is_leaf(con);
290 p->font = config.font.id;
292 if (con->deco_render_params != NULL &&
293 (con->window == NULL || !con->window->name_x_changed) &&
294 !parent->pixmap_recreated &&
295 !con->pixmap_recreated &&
296 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
297 DLOG("CACHE HIT, copying existing pixmaps\n");
302 DLOG("CACHE MISS\n");
304 while ((next = TAILQ_NEXT(next, nodes))) {
305 DLOG("Also invalidating cache of %p\n", next);
306 FREE(next->deco_render_params);
309 FREE(con->deco_render_params);
310 con->deco_render_params = p;
312 if (con->window != NULL && con->window->name_x_changed)
313 con->window->name_x_changed = false;
315 parent->pixmap_recreated = false;
316 con->pixmap_recreated = false;
318 /* If the con is in fullscreen mode, the decoration height we work with is set to 0 */
319 Rect deco_rect = con->deco_rect;
320 if (con_get_fullscreen_con(parent, CF_OUTPUT) == con)
321 deco_rect.height = 0;
323 /* 2: draw the client.background, but only for the parts around the client_rect */
324 if (con->window != NULL) {
325 xcb_rectangle_t background[] = {
327 { 0, 0, r->width, w->y },
329 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
331 { 0, 0, w->x, r->height },
333 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
336 for (int i = 0; i < 4; i++)
337 DLOG("rect is (%d, %d) with %d x %d\n",
345 xcb_change_gc_single(conn, con->pm_gc, XCB_GC_FOREGROUND, config.client.background);
346 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
349 /* 3: draw a rectangle in border color around the client */
350 if (p->border_style != BS_NONE && p->con_is_leaf) {
351 Rect br = con_border_style_rect(con);
353 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
354 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
355 DLOG("window_rect spans (%d, %d) with %d x %d\n", con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
358 /* These rectangles represents the border around the child window
359 * (left, bottom and right part). We don’t just fill the whole
360 * rectangle because some childs are not freely resizable and we want
361 * their background color to "shine through". */
362 xcb_change_gc_single(conn, con->pm_gc, XCB_GC_FOREGROUND, p->color->background);
363 xcb_rectangle_t borders[] = {
364 { 0, 0, br.x, r->height },
365 { 0, r->height + br.height + br.y, r->width, r->height },
366 { r->width + br.width + br.x, 0, r->width, r->height }
368 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 3, borders);
369 /* 1pixel border needs an additional line at the top */
370 if (p->border_style == BS_1PIXEL) {
371 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
372 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
376 /* if this is a borderless/1pixel window, we don’t * need to render the
378 if (p->border_style != BS_NORMAL) {
379 DLOG("border style not BS_NORMAL, aborting rendering of decoration\n");
383 /* 4: paint the bar */
384 xcb_change_gc_single(conn, parent->pm_gc, XCB_GC_FOREGROUND, p->color->background);
385 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
386 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
388 /* 5: draw two unconnected lines in border color */
389 xcb_change_gc_single(conn, parent->pm_gc, XCB_GC_FOREGROUND, p->color->border);
390 Rect *dr = &(con->deco_rect);
391 xcb_segment_t segments[] = {
393 dr->x + dr->width, dr->y },
395 { dr->x, dr->y + dr->height - 1,
396 dr->x + dr->width, dr->y + dr->height - 1 }
398 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
400 /* 6: draw the title */
401 uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
402 uint32_t values[] = { p->color->text, p->color->background, config.font.id };
403 xcb_change_gc(conn, parent->pm_gc, mask, values);
404 int text_offset_y = config.font.height + (con->deco_rect.height - config.font.height) / 2 - 1;
406 struct Window *win = con->window;
407 if (win == NULL || win->name_x == NULL) {
408 /* this is a non-leaf container, we need to make up a good description */
409 // TODO: use a good description instead of just "another container"
412 strlen("another container"),
415 con->deco_rect.x + 2,
416 con->deco_rect.y + text_offset_y,
423 int indent_level = 0,
425 Con *il_parent = parent;
426 if (il_parent->layout != L_STACKED) {
428 DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
429 if (il_parent->layout == L_STACKED)
431 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
433 il_parent = il_parent->parent;
437 DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
438 int indent_px = (indent_level * 5) * indent_mult;
440 if (win->uses_net_wm_name)
446 con->deco_rect.x + 2 + indent_px,
447 con->deco_rect.y + text_offset_y,
448 (xcb_char2b_t*)win->name_x
456 con->deco_rect.x + 2 + indent_px,
457 con->deco_rect.y + text_offset_y,
462 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
466 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
467 * because x_push_node uses focus order to recurse (see the comment above)
468 * while drawing the decoration needs to happen in the actual order.
471 void x_deco_recurse(Con *con) {
473 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
474 TAILQ_EMPTY(&(con->floating_head));
475 con_state *state = state_for_frame(con->frame);
478 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
479 x_deco_recurse(current);
481 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
482 x_deco_recurse(current);
485 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
488 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
490 x_draw_decoration(con);
494 * This function pushes the properties of each node of the layout tree to
495 * X11 if they have changed (like the map state, position of the window, …).
496 * It recursively traverses all children of the given node.
499 void x_push_node(Con *con) {
502 Rect rect = con->rect;
504 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
505 state = state_for_frame(con->frame);
507 if (state->name != NULL) {
508 DLOG("pushing name %s for con %p\n", state->name, con);
510 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
511 A_WM_NAME, A_STRING, 8, strlen(state->name), state->name);
515 if (con->window == NULL) {
516 /* Calculate the height of all window decorations which will be drawn on to
518 uint32_t max_y = 0, max_height = 0;
519 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
520 Rect *dr = &(current->deco_rect);
521 if (dr->y >= max_y && dr->height >= max_height) {
523 max_height = dr->height;
526 rect.height = max_y + max_height;
527 if (rect.height == 0) {
528 DLOG("Unmapping container %p because it does not contain anything.\n", con);
533 /* reparent the child window (when the window was moved due to a sticky
535 if (state->need_reparent && con->window != NULL) {
536 DLOG("Reparenting child window\n");
538 /* Temporarily set the event masks to XCB_NONE so that we won’t get
539 * UnmapNotify events (otherwise the handler would close the container).
540 * These events are generated automatically when reparenting. */
541 uint32_t values[] = { XCB_NONE };
542 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
543 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
545 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
547 values[0] = FRAME_EVENT_MASK;
548 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
549 values[0] = CHILD_EVENT_MASK;
550 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
552 state->old_frame = XCB_NONE;
553 state->need_reparent = false;
556 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
557 con, con->window->id, con->ignore_unmap);
560 bool fake_notify = false;
561 /* Set new position if rect changed (and if height > 0) */
562 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
564 /* We first create the new pixmap, then render to it, set it as the
565 * background and only afterwards change the window size. This reduces
568 /* As the pixmap only depends on the size and not on the position, it
569 * is enough to check if width/height have changed. Also, we don’t
570 * create a pixmap at all when the window is actually not visible
572 if ((state->rect.width != rect.width ||
573 state->rect.height != rect.height)) {
574 DLOG("CACHE: creating new pixmap for con %p (old: %d x %d, new: %d x %d)\n",
575 con, state->rect.width, state->rect.height,
576 rect.width, rect.height);
577 if (con->pixmap == 0) {
578 con->pixmap = xcb_generate_id(conn);
579 con->pm_gc = xcb_generate_id(conn);
581 xcb_free_pixmap(conn, con->pixmap);
582 xcb_free_gc(conn, con->pm_gc);
584 xcb_create_pixmap(conn, root_depth, con->pixmap, con->frame, rect.width, rect.height);
585 /* For the graphics context, we disable GraphicsExposure events.
586 * Those will be sent when a CopyArea request cannot be fulfilled
587 * properly due to parts of the source being unmapped or otherwise
588 * unavailable. Since we always copy from pixmaps to windows, this
589 * is not a concern for us. */
590 uint32_t values[] = { 0 };
591 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
593 con->pixmap_recreated = true;
595 /* Don’t render the decoration for windows inside a stack which are
596 * not visible right now */
598 con->parent->layout != L_STACKED ||
599 TAILQ_FIRST(&(con->parent->focus_head)) == con)
600 /* Render the decoration now to make the correct decoration visible
601 * from the very first moment. Later calls will be cached, so this
602 * doesn’t hurt performance. */
606 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
607 /* flush to ensure that the following commands are sent in a single
608 * buffer and will be processed directly afterwards (the contents of a
609 * window get lost when resizing it, therefore we want to provide it as
610 * fast as possible) */
612 xcb_set_window_rect(conn, con->frame, rect);
613 if (con->pixmap != XCB_NONE)
614 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
617 memcpy(&(state->rect), &rect, sizeof(Rect));
621 /* dito, but for child windows */
622 if (con->window != NULL &&
623 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
624 DLOG("setting window rect (%d, %d, %d, %d)\n",
625 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
626 xcb_set_window_rect(conn, con->window->id, con->window_rect);
627 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
631 /* Map if map state changed, also ensure that the child window
632 * is changed if we are mapped *and* in initial state (meaning the
633 * container was empty before, but now got a child). Unmaps are handled in
634 * x_push_node_unmaps(). */
635 if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
637 xcb_void_cookie_t cookie;
639 if (con->window != NULL) {
640 /* Set WM_STATE_NORMAL because GTK applications don’t want to
641 * drag & drop if we don’t. Also, xprop(1) needs it. */
642 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
643 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
644 A_WM_STATE, A_WM_STATE, 32, 2, data);
648 if (!state->child_mapped && con->window != NULL) {
649 cookie = xcb_map_window(conn, con->window->id);
651 /* We are interested in EnterNotifys as soon as the window is
653 values[0] = CHILD_EVENT_MASK;
654 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
655 DLOG("mapping child window (serial %d)\n", cookie.sequence);
656 state->child_mapped = true;
659 cookie = xcb_map_window(conn, con->frame);
661 values[0] = FRAME_EVENT_MASK;
662 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
664 /* copy the pixmap contents to the frame window immediately after mapping */
665 if (con->pixmap != XCB_NONE)
666 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
669 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
670 state->mapped = con->mapped;
673 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
676 DLOG("Sending fake configure notify\n");
677 fake_absolute_configure_notify(con);
680 /* Handle all children and floating windows of this node. We recurse
681 * in focus order to display the focused client in a stack first when
682 * switching workspaces (reduces flickering). */
683 TAILQ_FOREACH(current, &(con->focus_head), focused)
684 x_push_node(current);
688 * Same idea as in x_push_node(), but this function only unmaps windows. It is
689 * necessary to split this up to handle new fullscreen clients properly: The
690 * new window needs to be mapped and focus needs to be set *before* the
691 * underlying windows are unmapped. Otherwise, focus will revert to the
692 * PointerRoot and will then be set to the new window, generating unnecessary
693 * FocusIn/FocusOut events.
696 static void x_push_node_unmaps(Con *con) {
700 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
701 state = state_for_frame(con->frame);
703 /* map/unmap if map state changed, also ensure that the child window
704 * is changed if we are mapped *and* in initial state (meaning the
705 * container was empty before, but now got a child) */
706 if (state->unmap_now) {
707 xcb_void_cookie_t cookie;
708 if (con->window != NULL) {
709 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
710 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
711 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
712 A_WM_STATE, A_WM_STATE, 32, 2, data);
715 cookie = xcb_unmap_window(conn, con->frame);
716 DLOG("unmapping container (serial %d)\n", cookie.sequence);
717 /* we need to increase ignore_unmap for this container (if it
718 * contains a window) and for every window "under" this one which
719 * contains a window */
720 if (con->window != NULL) {
722 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
724 state->mapped = con->mapped;
727 /* handle all children and floating windows of this node */
728 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
729 x_push_node_unmaps(current);
731 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
732 x_push_node_unmaps(current);
736 * Pushes all changes (state of each node, see x_push_node() and the window
739 * NOTE: We need to push the stack first so that the windows have the correct
740 * stacking order. This is relevant for workspace switching where we map the
741 * windows because mapping may generate EnterNotify events. When they are
742 * generated in the wrong order, this will cause focus problems when switching
746 void x_push_changes(Con *con) {
749 DLOG("-- PUSHING WINDOW STACK --\n");
750 //DLOG("Disabling EnterNotify\n");
751 uint32_t values[1] = { XCB_NONE };
752 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
754 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
756 //DLOG("Done, EnterNotify disabled\n");
757 bool order_changed = false;
758 /* X11 correctly represents the stack if we push it from bottom to top */
759 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
760 //DLOG("stack: 0x%08x\n", state->id);
761 con_state *prev = CIRCLEQ_PREV(state, state);
762 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
763 if (prev != old_prev)
764 order_changed = true;
765 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
766 DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
768 mask |= XCB_CONFIG_WINDOW_SIBLING;
769 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
770 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
772 xcb_configure_window(conn, prev->id, mask, values);
774 state->initial = false;
776 //DLOG("Re-enabling EnterNotify\n");
777 values[0] = FRAME_EVENT_MASK;
778 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
780 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
782 //DLOG("Done, EnterNotify re-enabled\n");
784 DLOG("\n\n PUSHING CHANGES\n\n");
788 xcb_window_t to_focus = focused->frame;
789 if (focused->window != NULL)
790 to_focus = focused->window->id;
792 DLOG("focused_id = 0x%08x, to_focus = 0x%08x\n", focused_id, to_focus);
793 if (focused_id != to_focus) {
794 if (!focused->mapped) {
795 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
796 /* Invalidate focused_id to correctly focus new windows with the same ID */
797 focused_id = XCB_NONE;
799 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
800 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
801 * no focus change events for our own focus changes. We only want
802 * these generated by the clients. */
803 if (focused->window != NULL) {
804 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
805 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
807 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
808 if (focused->window != NULL) {
809 values[0] = CHILD_EVENT_MASK;
810 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
813 if (focused->window != NULL &&
814 focused->window->needs_take_focus) {
815 send_take_focus(to_focus);
818 ewmh_update_active_window(to_focus);
819 focused_id = to_focus;
823 if (focused_id == XCB_NONE) {
824 DLOG("Still no window focused, better set focus to the root window\n");
825 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
830 DLOG("\n\n ENDING CHANGES\n\n");
832 /* Disable EnterWindow events for windows which will be unmapped in
833 * x_push_node_unmaps() now. Unmapping windows happens when switching
834 * workspaces. We want to avoid getting EnterNotifies during that phase
835 * because they would screw up our focus. One of these cases is having a
836 * stack with two windows. If the first window is focused and gets
837 * unmapped, the second one appears under the cursor and therefore gets an
838 * EnterNotify event. */
839 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
840 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
841 if (!state->unmap_now)
843 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
846 /* Push all pending unmaps */
847 x_push_node_unmaps(con);
849 /* save the current stack as old stack */
850 CIRCLEQ_FOREACH(state, &state_head, state) {
851 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
852 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
854 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
855 // DLOG("old stack: 0x%08x\n", state->id);
862 * Raises the specified container in the internal stack of X windows. The
863 * next call to x_push_changes() will make the change visible in X11.
866 void x_raise_con(Con *con) {
868 state = state_for_frame(con->frame);
869 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
871 CIRCLEQ_REMOVE(&state_head, state, state);
872 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
876 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
877 * of the given name. Used for properly tagging the windows for easily spotting
878 * i3 windows in xwininfo -root -all.
881 void x_set_name(Con *con, const char *name) {
882 struct con_state *state;
884 if ((state = state_for_frame(con->frame)) == NULL) {
885 ELOG("window state not found\n");
890 state->name = sstrdup(name);
894 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
897 void x_set_i3_atoms() {
898 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
899 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
901 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
902 strlen(current_configpath), current_configpath);