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 /* 2: draw the client.background, but only for the parts around the client_rect */
319 if (con->window != NULL) {
320 xcb_rectangle_t background[] = {
322 { 0, 0, r->width, w->y },
324 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
326 { 0, 0, w->x, r->height },
328 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
331 for (int i = 0; i < 4; i++)
332 DLOG("rect is (%d, %d) with %d x %d\n",
340 xcb_change_gc_single(conn, con->pm_gc, XCB_GC_FOREGROUND, config.client.background);
341 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
344 /* 3: draw a rectangle in border color around the client */
345 if (p->border_style != BS_NONE && p->con_is_leaf) {
346 Rect br = con_border_style_rect(con);
348 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
349 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
350 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);
353 /* These rectangles represents the border around the child window
354 * (left, bottom and right part). We don’t just fill the whole
355 * rectangle because some childs are not freely resizable and we want
356 * their background color to "shine through". */
357 xcb_change_gc_single(conn, con->pm_gc, XCB_GC_FOREGROUND, p->color->background);
358 xcb_rectangle_t borders[] = {
359 { 0, 0, br.x, r->height },
360 { 0, r->height + br.height + br.y, r->width, r->height },
361 { r->width + br.width + br.x, 0, r->width, r->height }
363 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 3, borders);
364 /* 1pixel border needs an additional line at the top */
365 if (p->border_style == BS_1PIXEL) {
366 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
367 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
371 /* if this is a borderless/1pixel window, we don’t * need to render the
373 if (p->border_style != BS_NORMAL) {
374 DLOG("border style not BS_NORMAL, aborting rendering of decoration\n");
378 /* 4: paint the bar */
379 xcb_change_gc_single(conn, parent->pm_gc, XCB_GC_FOREGROUND, p->color->background);
380 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
381 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
383 /* 5: draw two unconnected lines in border color */
384 xcb_change_gc_single(conn, parent->pm_gc, XCB_GC_FOREGROUND, p->color->border);
385 Rect *dr = &(con->deco_rect);
386 xcb_segment_t segments[] = {
388 dr->x + dr->width, dr->y },
390 { dr->x, dr->y + dr->height - 1,
391 dr->x + dr->width, dr->y + dr->height - 1 }
393 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
395 /* 6: draw the title */
396 uint32_t mask = XCB_GC_FOREGROUND | XCB_GC_BACKGROUND | XCB_GC_FONT;
397 uint32_t values[] = { p->color->text, p->color->background, config.font.id };
398 xcb_change_gc(conn, parent->pm_gc, mask, values);
399 int text_offset_y = config.font.height + (con->deco_rect.height - config.font.height) / 2 - 1;
401 struct Window *win = con->window;
402 if (win == NULL || win->name_x == NULL) {
403 /* this is a non-leaf container, we need to make up a good description */
404 // TODO: use a good description instead of just "another container"
407 strlen("another container"),
410 con->deco_rect.x + 2,
411 con->deco_rect.y + text_offset_y,
418 int indent_level = 0,
420 Con *il_parent = parent;
421 if (il_parent->layout != L_STACKED) {
423 DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
424 if (il_parent->layout == L_STACKED)
426 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
428 il_parent = il_parent->parent;
432 DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
433 int indent_px = (indent_level * 5) * indent_mult;
435 if (win->uses_net_wm_name)
441 con->deco_rect.x + 2 + indent_px,
442 con->deco_rect.y + text_offset_y,
443 (xcb_char2b_t*)win->name_x
451 con->deco_rect.x + 2 + indent_px,
452 con->deco_rect.y + text_offset_y,
457 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
461 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
462 * because x_push_node uses focus order to recurse (see the comment above)
463 * while drawing the decoration needs to happen in the actual order.
466 void x_deco_recurse(Con *con) {
468 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
469 TAILQ_EMPTY(&(con->floating_head));
470 con_state *state = state_for_frame(con->frame);
473 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
474 x_deco_recurse(current);
476 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
477 x_deco_recurse(current);
480 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
483 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
485 x_draw_decoration(con);
489 * This function pushes the properties of each node of the layout tree to
490 * X11 if they have changed (like the map state, position of the window, …).
491 * It recursively traverses all children of the given node.
494 void x_push_node(Con *con) {
497 Rect rect = con->rect;
499 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
500 state = state_for_frame(con->frame);
502 if (state->name != NULL) {
503 DLOG("pushing name %s for con %p\n", state->name, con);
505 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
506 A_WM_NAME, A_STRING, 8, strlen(state->name), state->name);
510 if (con->window == NULL) {
511 /* Calculate the height of all window decorations which will be drawn on to
513 uint32_t max_y = 0, max_height = 0;
514 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
515 Rect *dr = &(current->deco_rect);
516 if (dr->y >= max_y && dr->height >= max_height) {
518 max_height = dr->height;
521 rect.height = max_y + max_height;
522 if (rect.height == 0) {
523 DLOG("Unmapping container %p because it does not contain anything.\n", con);
528 /* reparent the child window (when the window was moved due to a sticky
530 if (state->need_reparent && con->window != NULL) {
531 DLOG("Reparenting child window\n");
533 /* Temporarily set the event masks to XCB_NONE so that we won’t get
534 * UnmapNotify events (otherwise the handler would close the container).
535 * These events are generated automatically when reparenting. */
536 uint32_t values[] = { XCB_NONE };
537 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
538 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
540 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
542 values[0] = FRAME_EVENT_MASK;
543 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
544 values[0] = CHILD_EVENT_MASK;
545 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
547 state->old_frame = XCB_NONE;
548 state->need_reparent = false;
551 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
552 con, con->window->id, con->ignore_unmap);
555 bool fake_notify = false;
556 /* Set new position if rect changed (and if height > 0) */
557 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
559 /* We first create the new pixmap, then render to it, set it as the
560 * background and only afterwards change the window size. This reduces
563 /* As the pixmap only depends on the size and not on the position, it
564 * is enough to check if width/height have changed. Also, we don’t
565 * create a pixmap at all when the window is actually not visible
567 if ((state->rect.width != rect.width ||
568 state->rect.height != rect.height)) {
569 DLOG("CACHE: creating new pixmap for con %p (old: %d x %d, new: %d x %d)\n",
570 con, state->rect.width, state->rect.height,
571 rect.width, rect.height);
572 if (con->pixmap == 0) {
573 con->pixmap = xcb_generate_id(conn);
574 con->pm_gc = xcb_generate_id(conn);
576 xcb_free_pixmap(conn, con->pixmap);
577 xcb_free_gc(conn, con->pm_gc);
579 xcb_create_pixmap(conn, root_depth, con->pixmap, con->frame, rect.width, rect.height);
580 /* For the graphics context, we disable GraphicsExposure events.
581 * Those will be sent when a CopyArea request cannot be fulfilled
582 * properly due to parts of the source being unmapped or otherwise
583 * unavailable. Since we always copy from pixmaps to windows, this
584 * is not a concern for us. */
585 uint32_t values[] = { 0 };
586 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
588 con->pixmap_recreated = true;
590 /* Don’t render the decoration for windows inside a stack which are
591 * not visible right now */
593 con->parent->layout != L_STACKED ||
594 TAILQ_FIRST(&(con->parent->focus_head)) == con)
595 /* Render the decoration now to make the correct decoration visible
596 * from the very first moment. Later calls will be cached, so this
597 * doesn’t hurt performance. */
601 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
602 /* flush to ensure that the following commands are sent in a single
603 * buffer and will be processed directly afterwards (the contents of a
604 * window get lost when resizing it, therefore we want to provide it as
605 * fast as possible) */
607 xcb_set_window_rect(conn, con->frame, rect);
608 if (con->pixmap != XCB_NONE)
609 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
612 memcpy(&(state->rect), &rect, sizeof(Rect));
616 /* dito, but for child windows */
617 if (con->window != NULL &&
618 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
619 DLOG("setting window rect (%d, %d, %d, %d)\n",
620 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
621 xcb_set_window_rect(conn, con->window->id, con->window_rect);
622 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
626 /* Map if map state changed, also ensure that the child window
627 * is changed if we are mapped *and* in initial state (meaning the
628 * container was empty before, but now got a child). Unmaps are handled in
629 * x_push_node_unmaps(). */
630 if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
632 xcb_void_cookie_t cookie;
634 if (con->window != NULL) {
635 /* Set WM_STATE_NORMAL because GTK applications don’t want to
636 * drag & drop if we don’t. Also, xprop(1) needs it. */
637 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
638 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
639 A_WM_STATE, A_WM_STATE, 32, 2, data);
643 if (!state->child_mapped && con->window != NULL) {
644 cookie = xcb_map_window(conn, con->window->id);
646 /* We are interested in EnterNotifys as soon as the window is
648 values[0] = CHILD_EVENT_MASK;
649 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
650 DLOG("mapping child window (serial %d)\n", cookie.sequence);
651 state->child_mapped = true;
654 cookie = xcb_map_window(conn, con->frame);
656 values[0] = FRAME_EVENT_MASK;
657 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
659 /* copy the pixmap contents to the frame window immediately after mapping */
660 if (con->pixmap != XCB_NONE)
661 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
664 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
665 state->mapped = con->mapped;
668 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
671 DLOG("Sending fake configure notify\n");
672 fake_absolute_configure_notify(con);
675 /* Handle all children and floating windows of this node. We recurse
676 * in focus order to display the focused client in a stack first when
677 * switching workspaces (reduces flickering). */
678 TAILQ_FOREACH(current, &(con->focus_head), focused)
679 x_push_node(current);
683 * Same idea as in x_push_node(), but this function only unmaps windows. It is
684 * necessary to split this up to handle new fullscreen clients properly: The
685 * new window needs to be mapped and focus needs to be set *before* the
686 * underlying windows are unmapped. Otherwise, focus will revert to the
687 * PointerRoot and will then be set to the new window, generating unnecessary
688 * FocusIn/FocusOut events.
691 static void x_push_node_unmaps(Con *con) {
695 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
696 state = state_for_frame(con->frame);
698 /* map/unmap if map state changed, also ensure that the child window
699 * is changed if we are mapped *and* in initial state (meaning the
700 * container was empty before, but now got a child) */
701 if (state->unmap_now) {
702 xcb_void_cookie_t cookie;
703 if (con->window != NULL) {
704 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
705 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
706 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
707 A_WM_STATE, A_WM_STATE, 32, 2, data);
710 cookie = xcb_unmap_window(conn, con->frame);
711 DLOG("unmapping container (serial %d)\n", cookie.sequence);
712 /* we need to increase ignore_unmap for this container (if it
713 * contains a window) and for every window "under" this one which
714 * contains a window */
715 if (con->window != NULL) {
717 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
719 state->mapped = con->mapped;
722 /* handle all children and floating windows of this node */
723 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
724 x_push_node_unmaps(current);
726 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
727 x_push_node_unmaps(current);
731 * Pushes all changes (state of each node, see x_push_node() and the window
734 * NOTE: We need to push the stack first so that the windows have the correct
735 * stacking order. This is relevant for workspace switching where we map the
736 * windows because mapping may generate EnterNotify events. When they are
737 * generated in the wrong order, this will cause focus problems when switching
741 void x_push_changes(Con *con) {
744 DLOG("-- PUSHING WINDOW STACK --\n");
745 //DLOG("Disabling EnterNotify\n");
746 uint32_t values[1] = { XCB_NONE };
747 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
749 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
751 //DLOG("Done, EnterNotify disabled\n");
752 bool order_changed = false;
753 /* X11 correctly represents the stack if we push it from bottom to top */
754 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
755 //DLOG("stack: 0x%08x\n", state->id);
756 con_state *prev = CIRCLEQ_PREV(state, state);
757 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
758 if (prev != old_prev)
759 order_changed = true;
760 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
761 DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
763 mask |= XCB_CONFIG_WINDOW_SIBLING;
764 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
765 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
767 xcb_configure_window(conn, prev->id, mask, values);
769 state->initial = false;
771 //DLOG("Re-enabling EnterNotify\n");
772 values[0] = FRAME_EVENT_MASK;
773 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
775 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
777 //DLOG("Done, EnterNotify re-enabled\n");
779 DLOG("\n\n PUSHING CHANGES\n\n");
783 xcb_window_t to_focus = focused->frame;
784 if (focused->window != NULL)
785 to_focus = focused->window->id;
787 DLOG("focused_id = 0x%08x, to_focus = 0x%08x\n", focused_id, to_focus);
788 if (focused_id != to_focus) {
789 if (!focused->mapped) {
790 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
791 /* Invalidate focused_id to correctly focus new windows with the same ID */
792 focused_id = XCB_NONE;
794 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
795 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
796 * no focus change events for our own focus changes. We only want
797 * these generated by the clients. */
798 if (focused->window != NULL) {
799 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
800 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
802 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
803 if (focused->window != NULL) {
804 values[0] = CHILD_EVENT_MASK;
805 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
808 if (focused->window != NULL &&
809 focused->window->needs_take_focus) {
810 send_take_focus(to_focus);
813 ewmh_update_active_window(to_focus);
814 focused_id = to_focus;
818 if (focused_id == XCB_NONE) {
819 DLOG("Still no window focused, better set focus to the root window\n");
820 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
825 DLOG("\n\n ENDING CHANGES\n\n");
827 /* Disable EnterWindow events for windows which will be unmapped in
828 * x_push_node_unmaps() now. Unmapping windows happens when switching
829 * workspaces. We want to avoid getting EnterNotifies during that phase
830 * because they would screw up our focus. One of these cases is having a
831 * stack with two windows. If the first window is focused and gets
832 * unmapped, the second one appears under the cursor and therefore gets an
833 * EnterNotify event. */
834 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
835 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
836 if (!state->unmap_now)
838 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
841 /* Push all pending unmaps */
842 x_push_node_unmaps(con);
844 /* save the current stack as old stack */
845 CIRCLEQ_FOREACH(state, &state_head, state) {
846 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
847 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
849 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
850 // DLOG("old stack: 0x%08x\n", state->id);
857 * Raises the specified container in the internal stack of X windows. The
858 * next call to x_push_changes() will make the change visible in X11.
861 void x_raise_con(Con *con) {
863 state = state_for_frame(con->frame);
864 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
866 CIRCLEQ_REMOVE(&state_head, state, state);
867 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
871 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
872 * of the given name. Used for properly tagging the windows for easily spotting
873 * i3 windows in xwininfo -root -all.
876 void x_set_name(Con *con, const char *name) {
877 struct con_state *state;
879 if ((state = state_for_frame(con->frame)) == NULL) {
880 ELOG("window state not found\n");
885 state->name = sstrdup(name);
889 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
892 void x_set_i3_atoms() {
893 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
894 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
896 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
897 strlen(current_configpath), current_configpath);