2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
7 * x.c: Interface to X11, transfers our in-memory state to X11 (see also
8 * render.c). Basically a big state machine.
14 #define MAX(x, y) ((x) > (y) ? (x) : (y))
17 xcb_window_t ewmh_window;
19 /* Stores the X11 window ID of the currently focused window */
20 xcb_window_t focused_id = XCB_NONE;
22 /* Because 'focused_id' might be reset to force input focus, we separately keep
23 * track of the X11 window ID to be able to always tell whether the focused
24 * window actually changed. */
25 static xcb_window_t last_focused = XCB_NONE;
27 /* Stores coordinates to warp mouse pointer to if set */
31 * Describes the X11 state we may modify (map state, position, window stack).
32 * There is one entry per container. The state represents the current situation
33 * as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
34 * which represents the order that will be pushed to X11, while old_state_head
35 * represents the current order). It will be updated in x_push_changes().
38 typedef struct con_state {
45 /** The con for which this state is. */
48 /* For reparenting, we have a flag (need_reparent) and the X ID of the old
49 * frame this window was in. The latter is necessary because we need to
50 * ignore UnmapNotify events (by changing the window event mask). */
52 xcb_window_t old_frame;
61 CIRCLEQ_ENTRY(con_state)
64 CIRCLEQ_ENTRY(con_state)
67 TAILQ_ENTRY(con_state)
68 initial_mapping_order;
71 CIRCLEQ_HEAD(state_head, con_state)
73 CIRCLEQ_HEAD_INITIALIZER(state_head);
75 CIRCLEQ_HEAD(old_state_head, con_state)
77 CIRCLEQ_HEAD_INITIALIZER(old_state_head);
79 TAILQ_HEAD(initial_mapping_head, con_state)
80 initial_mapping_head =
81 TAILQ_HEAD_INITIALIZER(initial_mapping_head);
84 * Returns the container state for the given frame. This function always
85 * returns a container state (otherwise, there is a bug in the code and the
86 * container state of a container for which x_con_init() was not called was
90 static con_state *state_for_frame(xcb_window_t window) {
92 CIRCLEQ_FOREACH(state, &state_head, state)
93 if (state->id == window)
96 /* TODO: better error handling? */
97 ELOG("No state found\n");
103 * Changes the atoms on the root window and the windows themselves to properly
104 * reflect the current focus for ewmh compliance.
107 static void change_ewmh_focus(xcb_window_t new_focus, xcb_window_t old_focus) {
108 ewmh_update_active_window(new_focus);
110 if (new_focus != XCB_WINDOW_NONE) {
111 ewmh_update_focused(new_focus, true);
114 if (old_focus != XCB_WINDOW_NONE) {
115 ewmh_update_focused(old_focus, false);
120 * Initializes the X11 part for the given container. Called exactly once for
121 * every container from con_new().
124 void x_con_init(Con *con) {
125 /* TODO: maybe create the window when rendering first? we could then even
126 * get the initial geometry right */
131 xcb_visualid_t visual = get_visualid_by_depth(con->depth);
132 xcb_colormap_t win_colormap;
133 if (con->depth != root_depth) {
134 /* We need to create a custom colormap. */
135 win_colormap = xcb_generate_id(conn);
136 xcb_create_colormap(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
137 con->colormap = win_colormap;
139 /* Use the default colormap. */
140 win_colormap = colormap;
141 con->colormap = XCB_NONE;
144 /* We explicitly set a background color and border color (even though we
145 * don’t even have a border) because the X11 server requires us to when
146 * using 32 bit color depths, see
147 * https://stackoverflow.com/questions/3645632 */
148 mask |= XCB_CW_BACK_PIXEL;
149 values[0] = root_screen->black_pixel;
151 mask |= XCB_CW_BORDER_PIXEL;
152 values[1] = root_screen->black_pixel;
154 /* our own frames should not be managed */
155 mask |= XCB_CW_OVERRIDE_REDIRECT;
158 /* see include/xcb.h for the FRAME_EVENT_MASK */
159 mask |= XCB_CW_EVENT_MASK;
160 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
162 mask |= XCB_CW_COLORMAP;
163 values[4] = win_colormap;
165 Rect dims = {-15, -15, 10, 10};
166 xcb_window_t frame_id = create_window(conn, dims, con->depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
167 draw_util_surface_init(conn, &(con->frame), frame_id, get_visualtype_by_id(visual), dims.width, dims.height);
168 xcb_change_property(conn,
169 XCB_PROP_MODE_REPLACE,
174 (strlen("i3-frame") + 1) * 2,
175 "i3-frame\0i3-frame\0");
177 struct con_state *state = scalloc(1, sizeof(struct con_state));
178 state->id = con->frame.id;
179 state->mapped = false;
180 state->initial = true;
181 DLOG("Adding window 0x%08x to lists\n", state->id);
182 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
183 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
184 TAILQ_INSERT_TAIL(&initial_mapping_head, state, initial_mapping_order);
185 DLOG("adding new state for window id 0x%08x\n", state->id);
189 * Re-initializes the associated X window state for this container. You have
190 * to call this when you assign a client to an empty container to ensure that
191 * its state gets updated correctly.
194 void x_reinit(Con *con) {
195 struct con_state *state;
197 if ((state = state_for_frame(con->frame.id)) == NULL) {
198 ELOG("window state not found\n");
202 DLOG("resetting state %p to initial\n", state);
203 state->initial = true;
204 state->child_mapped = false;
206 memset(&(state->window_rect), 0, sizeof(Rect));
210 * Reparents the child window of the given container (necessary for sticky
211 * containers). The reparenting happens in the next call of x_push_changes().
214 void x_reparent_child(Con *con, Con *old) {
215 struct con_state *state;
216 if ((state = state_for_frame(con->frame.id)) == NULL) {
217 ELOG("window state for con not found\n");
221 state->need_reparent = true;
222 state->old_frame = old->frame.id;
226 * Moves a child window from Container src to Container dest.
229 void x_move_win(Con *src, Con *dest) {
230 struct con_state *state_src, *state_dest;
232 if ((state_src = state_for_frame(src->frame.id)) == NULL) {
233 ELOG("window state for src not found\n");
237 if ((state_dest = state_for_frame(dest->frame.id)) == NULL) {
238 ELOG("window state for dest not found\n");
242 state_dest->con = state_src->con;
243 state_src->con = NULL;
245 Rect zero = {0, 0, 0, 0};
246 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
247 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
248 DLOG("COPYING RECT\n");
252 static void _x_con_kill(Con *con) {
255 if (con->colormap != XCB_NONE) {
256 xcb_free_colormap(conn, con->colormap);
259 draw_util_surface_free(conn, &(con->frame));
260 draw_util_surface_free(conn, &(con->frame_buffer));
261 xcb_free_pixmap(conn, con->frame_buffer.id);
262 state = state_for_frame(con->frame.id);
263 CIRCLEQ_REMOVE(&state_head, state, state);
264 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
265 TAILQ_REMOVE(&initial_mapping_head, state, initial_mapping_order);
269 /* Invalidate focused_id to correctly focus new windows with the same ID */
270 focused_id = last_focused = XCB_NONE;
274 * Kills the window decoration associated with the given container.
277 void x_con_kill(Con *con) {
279 xcb_destroy_window(conn, con->frame.id);
283 * Completely reinitializes the container's frame, without destroying the old window.
286 void x_con_reframe(Con *con) {
292 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
295 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
296 xcb_get_property_cookie_t cookie;
297 xcb_icccm_get_wm_protocols_reply_t protocols;
300 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
301 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
304 /* Check if the client’s protocols have the requested atom set */
305 for (uint32_t i = 0; i < protocols.atoms_len; i++)
306 if (protocols.atoms[i] == atom)
309 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
315 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
318 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
319 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
320 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
321 if (kill_window == KILL_WINDOW) {
322 LOG("Killing specific window 0x%08x\n", window);
323 xcb_destroy_window(conn, window);
325 LOG("Killing the X11 client which owns window 0x%08x\n", window);
326 xcb_kill_client(conn, window);
331 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
332 * In order to properly initialize these bytes, we allocate 32 bytes even
333 * though we only need less for an xcb_configure_notify_event_t */
334 void *event = scalloc(32, 1);
335 xcb_client_message_event_t *ev = event;
337 ev->response_type = XCB_CLIENT_MESSAGE;
339 ev->type = A_WM_PROTOCOLS;
341 ev->data.data32[0] = A_WM_DELETE_WINDOW;
342 ev->data.data32[1] = XCB_CURRENT_TIME;
344 LOG("Sending WM_DELETE to the client\n");
345 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
350 static void x_draw_title_border(Con *con, struct deco_render_params *p) {
351 assert(con->parent != NULL);
353 Rect *dr = &(con->deco_rect);
354 adjacent_t borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
355 int deco_diff_l = borders_to_hide & ADJ_LEFT_SCREEN_EDGE ? 0 : con->current_border_width;
356 int deco_diff_r = borders_to_hide & ADJ_RIGHT_SCREEN_EDGE ? 0 : con->current_border_width;
357 if (con->parent->layout == L_TABBED ||
358 (con->parent->layout == L_STACKED && TAILQ_NEXT(con, nodes) != NULL)) {
363 draw_util_rectangle(&(con->parent->frame_buffer), p->color->border,
364 dr->x, dr->y, dr->width, 1);
366 draw_util_rectangle(&(con->parent->frame_buffer), p->color->border,
367 dr->x + deco_diff_l, dr->y + dr->height - 1, dr->width - (deco_diff_l + deco_diff_r), 1);
370 static void x_draw_decoration_after_title(Con *con, struct deco_render_params *p) {
371 assert(con->parent != NULL);
373 Rect *dr = &(con->deco_rect);
375 /* Redraw the right border to cut off any text that went past it.
376 * This is necessary when the text was drawn using XCB since cutting text off
377 * automatically does not work there. For pango rendering, this isn't necessary. */
378 if (!font_is_pango()) {
379 /* We actually only redraw the far right two pixels as that is the
380 * distance we keep from the edge (not the entire border width).
381 * Redrawing the entire border would cause text to be cut off. */
382 draw_util_rectangle(&(con->parent->frame_buffer), p->color->background,
383 dr->x + dr->width - 2 * logical_px(1),
389 /* Draw a 1px separator line before and after every tab, so that tabs can
390 * be easily distinguished. */
391 if (con->parent->layout == L_TABBED) {
393 draw_util_rectangle(&(con->parent->frame_buffer), p->color->border,
394 dr->x, dr->y, 1, dr->height);
397 draw_util_rectangle(&(con->parent->frame_buffer), p->color->border,
398 dr->x + dr->width - 1, dr->y, 1, dr->height);
401 /* Redraw the border. */
402 x_draw_title_border(con, p);
406 * Draws the decoration of the given container onto its parent.
409 void x_draw_decoration(Con *con) {
410 Con *parent = con->parent;
411 bool leaf = con_is_leaf(con);
413 /* This code needs to run for:
415 * • non-leaf containers which are in a stacked/tabbed container
417 * It does not need to run for:
418 * • direct children of outputs or dockareas
419 * • floating containers (they don’t have a decoration)
422 parent->layout != L_STACKED &&
423 parent->layout != L_TABBED) ||
424 parent->type == CT_OUTPUT ||
425 parent->type == CT_DOCKAREA ||
426 con->type == CT_FLOATING_CON)
429 /* Skip containers whose height is 0 (for example empty dockareas) */
430 if (con->rect.height == 0)
433 /* Skip containers whose pixmap has not yet been created (can happen when
434 * decoration rendering happens recursively for a window for which
435 * x_push_node() was not yet called) */
436 if (leaf && con->frame_buffer.id == XCB_NONE)
439 /* 1: build deco_params and compare with cache */
440 struct deco_render_params *p = scalloc(1, sizeof(struct deco_render_params));
442 /* find out which colors to use */
444 p->color = &config.client.urgent;
445 else if (con == focused || con_inside_focused(con))
446 p->color = &config.client.focused;
447 else if (con == TAILQ_FIRST(&(parent->focus_head)))
448 p->color = &config.client.focused_inactive;
450 p->color = &config.client.unfocused;
452 p->border_style = con_border_style(con);
454 Rect *r = &(con->rect);
455 Rect *w = &(con->window_rect);
456 p->con_rect = (struct width_height){r->width, r->height};
457 p->con_window_rect = (struct width_height){w->width, w->height};
458 p->con_deco_rect = con->deco_rect;
459 p->background = config.client.background;
460 p->con_is_leaf = con_is_leaf(con);
461 p->parent_layout = con->parent->layout;
463 if (con->deco_render_params != NULL &&
464 (con->window == NULL || !con->window->name_x_changed) &&
465 !parent->pixmap_recreated &&
466 !con->pixmap_recreated &&
467 !con->mark_changed &&
468 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
474 while ((next = TAILQ_NEXT(next, nodes))) {
475 FREE(next->deco_render_params);
478 FREE(con->deco_render_params);
479 con->deco_render_params = p;
481 if (con->window != NULL && con->window->name_x_changed)
482 con->window->name_x_changed = false;
484 parent->pixmap_recreated = false;
485 con->pixmap_recreated = false;
486 con->mark_changed = false;
488 /* 2: draw the client.background, but only for the parts around the window_rect */
489 if (con->window != NULL) {
491 draw_util_rectangle(&(con->frame_buffer), config.client.background,
492 0, 0, r->width, w->y);
494 draw_util_rectangle(&(con->frame_buffer), config.client.background,
495 0, w->y + w->height, r->width, r->height - (w->y + w->height));
497 draw_util_rectangle(&(con->frame_buffer), config.client.background,
498 0, 0, w->x, r->height);
500 draw_util_rectangle(&(con->frame_buffer), config.client.background,
501 w->x + w->width, 0, r->width - (w->x + w->width), r->height);
504 /* 3: draw a rectangle in border color around the client */
505 if (p->border_style != BS_NONE && p->con_is_leaf) {
506 /* We might hide some borders adjacent to the screen-edge */
507 adjacent_t borders_to_hide = ADJ_NONE;
508 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
510 Rect br = con_border_style_rect(con);
512 /* These rectangles represent the border around the child window
513 * (left, bottom and right part). We don’t just fill the whole
514 * rectangle because some childs are not freely resizable and we want
515 * their background color to "shine through". */
516 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
517 draw_util_rectangle(&(con->frame_buffer), p->color->child_border, 0, 0, br.x, r->height);
519 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
520 draw_util_rectangle(&(con->frame_buffer),
521 p->color->child_border, r->width + (br.width + br.x), 0,
522 -(br.width + br.x), r->height);
524 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
525 draw_util_rectangle(&(con->frame_buffer),
526 p->color->child_border, br.x, r->height + (br.height + br.y),
527 r->width + br.width, -(br.height + br.y));
529 /* pixel border needs an additional line at the top */
530 if (p->border_style == BS_PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
531 draw_util_rectangle(&(con->frame_buffer),
532 p->color->child_border, br.x, 0, r->width + br.width, br.y);
535 /* Highlight the side of the border at which the next window will be
536 * opened if we are rendering a single window within a split container
537 * (which is undistinguishable from a single window outside a split
538 * container otherwise. */
539 if (TAILQ_NEXT(con, nodes) == NULL &&
540 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
541 con->parent->type != CT_FLOATING_CON) {
542 if (p->parent_layout == L_SPLITH) {
543 draw_util_rectangle(&(con->frame_buffer), p->color->indicator,
544 r->width + (br.width + br.x), br.y, -(br.width + br.x), r->height + br.height);
545 } else if (p->parent_layout == L_SPLITV) {
546 draw_util_rectangle(&(con->frame_buffer), p->color->indicator,
547 br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y));
552 /* if this is a borderless/1pixel window, we don’t need to render the
554 if (p->border_style != BS_NORMAL)
557 /* If the parent hasn't been set up yet, skip the decoration rendering
559 if (parent->frame_buffer.id == XCB_NONE)
562 /* For the first child, we clear the parent pixmap to ensure there's no
563 * garbage left on there. This is important to avoid tearing when using
565 if (con == TAILQ_FIRST(&(con->parent->nodes_head))) {
566 draw_util_clear_surface(&(con->parent->frame_buffer), COLOR_TRANSPARENT);
567 FREE(con->parent->deco_render_params);
570 /* 4: paint the bar */
571 draw_util_rectangle(&(parent->frame_buffer), p->color->background,
572 con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height);
574 /* 5: draw two unconnected horizontal lines in border color */
575 x_draw_title_border(con, p);
577 /* 6: draw the title */
578 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
580 struct Window *win = con->window;
583 if (con->title_format == NULL) {
585 char *tree = con_get_tree_representation(con);
586 sasprintf(&_title, "i3: %s", tree);
589 title = i3string_from_utf8(_title);
592 title = con_parse_title_format(con);
595 draw_util_text(title, &(parent->frame_buffer),
596 p->color->text, p->color->background,
597 con->deco_rect.x + logical_px(2),
598 con->deco_rect.y + text_offset_y,
599 con->deco_rect.width - 2 * logical_px(2));
600 I3STRING_FREE(title);
606 if (config.show_marks && !TAILQ_EMPTY(&(con->marks_head))) {
607 char *formatted_mark = sstrdup("");
608 bool had_visible_mark = false;
611 TAILQ_FOREACH(mark, &(con->marks_head), marks) {
612 if (mark->name[0] == '_')
614 had_visible_mark = true;
617 sasprintf(&buf, "%s[%s]", formatted_mark, mark->name);
618 free(formatted_mark);
619 formatted_mark = buf;
622 if (had_visible_mark) {
623 i3String *mark = i3string_from_utf8(formatted_mark);
624 mark_width = predict_text_width(mark);
626 draw_util_text(mark, &(parent->frame_buffer),
627 p->color->text, p->color->background,
628 con->deco_rect.x + con->deco_rect.width - mark_width - logical_px(2),
629 con->deco_rect.y + text_offset_y, mark_width);
634 FREE(formatted_mark);
637 i3String *title = con->title_format == NULL ? win->name : con_parse_title_format(con);
642 draw_util_text(title, &(parent->frame_buffer),
643 p->color->text, p->color->background,
644 con->deco_rect.x + logical_px(2),
645 con->deco_rect.y + text_offset_y,
646 con->deco_rect.width - mark_width - 2 * logical_px(2));
648 if (con->title_format != NULL) {
649 I3STRING_FREE(title);
653 x_draw_decoration_after_title(con, p);
655 draw_util_copy_surface(&(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
659 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
660 * because x_push_node uses focus order to recurse (see the comment above)
661 * while drawing the decoration needs to happen in the actual order.
664 void x_deco_recurse(Con *con) {
666 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
667 TAILQ_EMPTY(&(con->floating_head));
668 con_state *state = state_for_frame(con->frame.id);
671 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
672 x_deco_recurse(current);
674 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
675 x_deco_recurse(current);
678 draw_util_copy_surface(&(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
682 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
683 (!leaf || con->mapped))
684 x_draw_decoration(con);
688 * Sets or removes the _NET_WM_STATE_HIDDEN property on con if necessary.
691 static void set_hidden_state(Con *con) {
692 if (con->window == NULL) {
696 con_state *state = state_for_frame(con->frame.id);
697 bool should_be_hidden = con_is_hidden(con);
698 if (should_be_hidden == state->is_hidden)
701 if (should_be_hidden) {
702 DLOG("setting _NET_WM_STATE_HIDDEN for con = %p\n", con);
703 xcb_add_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
705 DLOG("removing _NET_WM_STATE_HIDDEN for con = %p\n", con);
706 xcb_remove_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
709 state->is_hidden = should_be_hidden;
713 * This function pushes the properties of each node of the layout tree to
714 * X11 if they have changed (like the map state, position of the window, …).
715 * It recursively traverses all children of the given node.
718 void x_push_node(Con *con) {
721 Rect rect = con->rect;
723 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
724 state = state_for_frame(con->frame.id);
726 if (state->name != NULL) {
727 DLOG("pushing name %s for con %p\n", state->name, con);
729 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame.id,
730 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
734 if (con->window == NULL) {
735 /* Calculate the height of all window decorations which will be drawn on to
737 uint32_t max_y = 0, max_height = 0;
738 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
739 Rect *dr = &(current->deco_rect);
740 if (dr->y >= max_y && dr->height >= max_height) {
742 max_height = dr->height;
745 rect.height = max_y + max_height;
746 if (rect.height == 0)
750 /* reparent the child window (when the window was moved due to a sticky
752 if (state->need_reparent && con->window != NULL) {
753 DLOG("Reparenting child window\n");
755 /* Temporarily set the event masks to XCB_NONE so that we won’t get
756 * UnmapNotify events (otherwise the handler would close the container).
757 * These events are generated automatically when reparenting. */
758 uint32_t values[] = {XCB_NONE};
759 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
760 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
762 xcb_reparent_window(conn, con->window->id, con->frame.id, 0, 0);
764 values[0] = FRAME_EVENT_MASK;
765 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
766 values[0] = CHILD_EVENT_MASK;
767 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
769 state->old_frame = XCB_NONE;
770 state->need_reparent = false;
773 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
774 con, con->window->id, con->ignore_unmap);
777 /* The pixmap of a borderless leaf container will not be used except
778 * for the titlebar in a stack or tabs (issue #1013). */
779 bool is_pixmap_needed = (con->border_style != BS_NONE ||
781 con->parent->layout == L_STACKED ||
782 con->parent->layout == L_TABBED);
784 /* The root con and output cons will never require a pixmap. In particular for the
785 * __i3 output, this will likely not work anyway because it might be ridiculously
786 * large, causing an XCB_ALLOC error. */
787 if (con->type == CT_ROOT || con->type == CT_OUTPUT)
788 is_pixmap_needed = false;
790 bool fake_notify = false;
791 /* Set new position if rect changed (and if height > 0) or if the pixmap
792 * needs to be recreated */
793 if ((is_pixmap_needed && con->frame_buffer.id == XCB_NONE) || (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
795 /* We first create the new pixmap, then render to it, set it as the
796 * background and only afterwards change the window size. This reduces
799 /* As the pixmap only depends on the size and not on the position, it
800 * is enough to check if width/height have changed. Also, we don’t
801 * create a pixmap at all when the window is actually not visible
802 * (height == 0) or when it is not needed. */
803 bool has_rect_changed = (state->rect.width != rect.width || state->rect.height != rect.height);
805 /* Check if the container has an unneeded pixmap left over from
806 * previously having a border or titlebar. */
807 if (!is_pixmap_needed && con->frame_buffer.id != XCB_NONE) {
808 draw_util_surface_free(conn, &(con->frame_buffer));
809 xcb_free_pixmap(conn, con->frame_buffer.id);
810 con->frame_buffer.id = XCB_NONE;
813 if (is_pixmap_needed && (has_rect_changed || con->frame_buffer.id == XCB_NONE)) {
814 if (con->frame_buffer.id == XCB_NONE) {
815 con->frame_buffer.id = xcb_generate_id(conn);
817 draw_util_surface_free(conn, &(con->frame_buffer));
818 xcb_free_pixmap(conn, con->frame_buffer.id);
821 uint16_t win_depth = root_depth;
823 win_depth = con->window->depth;
825 /* Ensure we have valid dimensions for our surface. */
826 // TODO This is probably a bug in the condition above as we should never enter this path
827 // for height == 0. Also, we should probably handle width == 0 the same way.
828 int width = MAX((int32_t)rect.width, 1);
829 int height = MAX((int32_t)rect.height, 1);
831 xcb_create_pixmap(conn, win_depth, con->frame_buffer.id, con->frame.id, width, height);
832 draw_util_surface_init(conn, &(con->frame_buffer), con->frame_buffer.id,
833 get_visualtype_by_id(get_visualid_by_depth(win_depth)), width, height);
835 /* For the graphics context, we disable GraphicsExposure events.
836 * Those will be sent when a CopyArea request cannot be fulfilled
837 * properly due to parts of the source being unmapped or otherwise
838 * unavailable. Since we always copy from pixmaps to windows, this
839 * is not a concern for us. */
840 xcb_change_gc(conn, con->frame_buffer.gc, XCB_GC_GRAPHICS_EXPOSURES, (uint32_t[]){0});
842 draw_util_surface_set_size(&(con->frame), width, height);
843 con->pixmap_recreated = true;
845 /* Don’t render the decoration for windows inside a stack which are
846 * not visible right now */
847 // TODO Should this work the same way for L_TABBED?
849 con->parent->layout != L_STACKED ||
850 TAILQ_FIRST(&(con->parent->focus_head)) == con)
851 /* Render the decoration now to make the correct decoration visible
852 * from the very first moment. Later calls will be cached, so this
853 * doesn’t hurt performance. */
857 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
858 /* flush to ensure that the following commands are sent in a single
859 * buffer and will be processed directly afterwards (the contents of a
860 * window get lost when resizing it, therefore we want to provide it as
861 * fast as possible) */
863 xcb_set_window_rect(conn, con->frame.id, rect);
864 if (con->frame_buffer.id != XCB_NONE) {
865 draw_util_copy_surface(&(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
869 memcpy(&(state->rect), &rect, sizeof(Rect));
873 /* dito, but for child windows */
874 if (con->window != NULL &&
875 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
876 DLOG("setting window rect (%d, %d, %d, %d)\n",
877 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
878 xcb_set_window_rect(conn, con->window->id, con->window_rect);
879 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
883 /* Map if map state changed, also ensure that the child window
884 * is changed if we are mapped and there is a new, unmapped child window.
885 * Unmaps are handled in x_push_node_unmaps(). */
886 if ((state->mapped != con->mapped || (con->window != NULL && !state->child_mapped)) &&
888 xcb_void_cookie_t cookie;
890 if (con->window != NULL) {
891 /* Set WM_STATE_NORMAL because GTK applications don’t want to
892 * drag & drop if we don’t. Also, xprop(1) needs it. */
893 long data[] = {XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE};
894 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
895 A_WM_STATE, A_WM_STATE, 32, 2, data);
899 if (!state->child_mapped && con->window != NULL) {
900 cookie = xcb_map_window(conn, con->window->id);
902 /* We are interested in EnterNotifys as soon as the window is
904 values[0] = CHILD_EVENT_MASK;
905 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
906 DLOG("mapping child window (serial %d)\n", cookie.sequence);
907 state->child_mapped = true;
910 cookie = xcb_map_window(conn, con->frame.id);
912 values[0] = FRAME_EVENT_MASK;
913 xcb_change_window_attributes(conn, con->frame.id, XCB_CW_EVENT_MASK, values);
915 /* copy the pixmap contents to the frame window immediately after mapping */
916 if (con->frame_buffer.id != XCB_NONE) {
917 draw_util_copy_surface(&(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
921 DLOG("mapping container %08x (serial %d)\n", con->frame.id, cookie.sequence);
922 state->mapped = con->mapped;
925 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
928 DLOG("Sending fake configure notify\n");
929 fake_absolute_configure_notify(con);
932 set_hidden_state(con);
934 /* Handle all children and floating windows of this node. We recurse
935 * in focus order to display the focused client in a stack first when
936 * switching workspaces (reduces flickering). */
937 TAILQ_FOREACH(current, &(con->focus_head), focused) {
938 x_push_node(current);
943 * Same idea as in x_push_node(), but this function only unmaps windows. It is
944 * necessary to split this up to handle new fullscreen clients properly: The
945 * new window needs to be mapped and focus needs to be set *before* the
946 * underlying windows are unmapped. Otherwise, focus will revert to the
947 * PointerRoot and will then be set to the new window, generating unnecessary
948 * FocusIn/FocusOut events.
951 static void x_push_node_unmaps(Con *con) {
955 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
956 state = state_for_frame(con->frame.id);
958 /* map/unmap if map state changed, also ensure that the child window
959 * is changed if we are mapped *and* in initial state (meaning the
960 * container was empty before, but now got a child) */
961 if (state->unmap_now) {
962 xcb_void_cookie_t cookie;
963 if (con->window != NULL) {
964 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
965 long data[] = {XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE};
966 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
967 A_WM_STATE, A_WM_STATE, 32, 2, data);
970 cookie = xcb_unmap_window(conn, con->frame.id);
971 DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
972 /* we need to increase ignore_unmap for this container (if it
973 * contains a window) and for every window "under" this one which
974 * contains a window */
975 if (con->window != NULL) {
977 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame.id, con->ignore_unmap);
979 state->mapped = con->mapped;
982 /* handle all children and floating windows of this node */
983 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
984 x_push_node_unmaps(current);
986 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
987 x_push_node_unmaps(current);
991 * Returns true if the given container is currently attached to its parent.
993 * TODO: Remove once #1185 has been fixed
995 static bool is_con_attached(Con *con) {
996 if (con->parent == NULL)
1000 TAILQ_FOREACH(current, &(con->parent->nodes_head), nodes) {
1009 * Pushes all changes (state of each node, see x_push_node() and the window
1012 * NOTE: We need to push the stack first so that the windows have the correct
1013 * stacking order. This is relevant for workspace switching where we map the
1014 * windows because mapping may generate EnterNotify events. When they are
1015 * generated in the wrong order, this will cause focus problems when switching
1019 void x_push_changes(Con *con) {
1021 xcb_query_pointer_cookie_t pointercookie;
1023 /* If we need to warp later, we request the pointer position as soon as possible */
1025 pointercookie = xcb_query_pointer(conn, root);
1028 DLOG("-- PUSHING WINDOW STACK --\n");
1029 //DLOG("Disabling EnterNotify\n");
1030 /* We need to keep SubstructureRedirect around, otherwise clients can send
1031 * ConfigureWindow requests and get them applied directly instead of having
1032 * them become ConfigureRequests that i3 handles. */
1033 uint32_t values[1] = {XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT};
1034 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1036 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1038 //DLOG("Done, EnterNotify disabled\n");
1039 bool order_changed = false;
1040 bool stacking_changed = false;
1042 /* count first, necessary to (re)allocate memory for the bottom-to-top
1043 * stack afterwards */
1045 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
1046 if (con_has_managed_window(state->con))
1049 /* The bottom-to-top window stack of all windows which are managed by i3.
1050 * Used for x_get_window_stack(). */
1051 static xcb_window_t *client_list_windows = NULL;
1052 static int client_list_count = 0;
1054 if (cnt != client_list_count) {
1055 client_list_windows = srealloc(client_list_windows, sizeof(xcb_window_t) * cnt);
1056 client_list_count = cnt;
1059 xcb_window_t *walk = client_list_windows;
1061 /* X11 correctly represents the stack if we push it from bottom to top */
1062 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1063 if (con_has_managed_window(state->con))
1064 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
1066 //DLOG("stack: 0x%08x\n", state->id);
1067 con_state *prev = CIRCLEQ_PREV(state, state);
1068 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
1069 if (prev != old_prev)
1070 order_changed = true;
1071 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
1072 stacking_changed = true;
1073 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
1075 mask |= XCB_CONFIG_WINDOW_SIBLING;
1076 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
1077 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
1079 xcb_configure_window(conn, prev->id, mask, values);
1081 state->initial = false;
1084 /* If we re-stacked something (or a new window appeared), we need to update
1085 * the _NET_CLIENT_LIST and _NET_CLIENT_LIST_STACKING hints */
1086 if (stacking_changed) {
1087 DLOG("Client list changed (%i clients)\n", cnt);
1088 ewmh_update_client_list_stacking(client_list_windows, client_list_count);
1090 walk = client_list_windows;
1092 /* reorder by initial mapping */
1093 TAILQ_FOREACH(state, &initial_mapping_head, initial_mapping_order) {
1094 if (con_has_managed_window(state->con))
1095 *walk++ = state->con->window->id;
1098 ewmh_update_client_list(client_list_windows, client_list_count);
1101 DLOG("PUSHING CHANGES\n");
1105 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
1106 if (!pointerreply) {
1107 ELOG("Could not query pointer position, not warping pointer\n");
1109 int mid_x = warp_to->x + (warp_to->width / 2);
1110 int mid_y = warp_to->y + (warp_to->height / 2);
1112 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
1113 Output *target = get_output_containing(mid_x, mid_y);
1114 if (current != target) {
1115 /* Ignore MotionNotify events generated by warping */
1116 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT});
1117 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
1118 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ROOT_EVENT_MASK});
1126 //DLOG("Re-enabling EnterNotify\n");
1127 values[0] = FRAME_EVENT_MASK;
1128 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1130 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1132 //DLOG("Done, EnterNotify re-enabled\n");
1134 x_deco_recurse(con);
1136 xcb_window_t to_focus = focused->frame.id;
1137 if (focused->window != NULL)
1138 to_focus = focused->window->id;
1140 if (focused_id != to_focus) {
1141 if (!focused->mapped) {
1142 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
1143 /* Invalidate focused_id to correctly focus new windows with the same ID */
1144 focused_id = XCB_NONE;
1146 if (focused->window != NULL &&
1147 focused->window->needs_take_focus &&
1148 focused->window->doesnt_accept_focus) {
1149 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
1150 to_focus, focused, focused->name);
1151 send_take_focus(to_focus, last_timestamp);
1153 change_ewmh_focus((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE), last_focused);
1155 if (to_focus != last_focused && is_con_attached(focused))
1156 ipc_send_window_event("focus", focused);
1158 DLOG("Updating focus (focused: %p / %s) to X11 window 0x%08x\n", focused, focused->name, to_focus);
1159 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
1160 * no focus change events for our own focus changes. We only want
1161 * these generated by the clients. */
1162 if (focused->window != NULL) {
1163 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
1164 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1166 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, last_timestamp);
1167 if (focused->window != NULL) {
1168 values[0] = CHILD_EVENT_MASK;
1169 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1172 change_ewmh_focus((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE), last_focused);
1174 if (to_focus != XCB_NONE && to_focus != last_focused && focused->window != NULL && is_con_attached(focused))
1175 ipc_send_window_event("focus", focused);
1178 focused_id = last_focused = to_focus;
1182 if (focused_id == XCB_NONE) {
1183 /* If we still have no window to focus, we focus the EWMH window instead. We use this rather than the
1184 * root window in order to avoid an X11 fallback mechanism causing a ghosting effect (see #1378). */
1185 DLOG("Still no window focused, better set focus to the EWMH support window (%d)\n", ewmh_window);
1186 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, ewmh_window, last_timestamp);
1187 change_ewmh_focus(XCB_WINDOW_NONE, last_focused);
1189 focused_id = ewmh_window;
1193 DLOG("ENDING CHANGES\n");
1195 /* Disable EnterWindow events for windows which will be unmapped in
1196 * x_push_node_unmaps() now. Unmapping windows happens when switching
1197 * workspaces. We want to avoid getting EnterNotifies during that phase
1198 * because they would screw up our focus. One of these cases is having a
1199 * stack with two windows. If the first window is focused and gets
1200 * unmapped, the second one appears under the cursor and therefore gets an
1201 * EnterNotify event. */
1202 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
1203 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1204 if (!state->unmap_now)
1206 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1209 /* Push all pending unmaps */
1210 x_push_node_unmaps(con);
1212 /* save the current stack as old stack */
1213 CIRCLEQ_FOREACH(state, &state_head, state) {
1214 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
1215 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
1217 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
1218 // DLOG("old stack: 0x%08x\n", state->id);
1225 * Raises the specified container in the internal stack of X windows. The
1226 * next call to x_push_changes() will make the change visible in X11.
1229 void x_raise_con(Con *con) {
1231 state = state_for_frame(con->frame.id);
1232 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1234 CIRCLEQ_REMOVE(&state_head, state, state);
1235 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1239 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1240 * of the given name. Used for properly tagging the windows for easily spotting
1241 * i3 windows in xwininfo -root -all.
1244 void x_set_name(Con *con, const char *name) {
1245 struct con_state *state;
1247 if ((state = state_for_frame(con->frame.id)) == NULL) {
1248 ELOG("window state not found\n");
1253 state->name = sstrdup(name);
1257 * Set up the I3_SHMLOG_PATH atom.
1260 void update_shmlog_atom() {
1261 if (*shmlogname == '\0') {
1262 xcb_delete_property(conn, root, A_I3_SHMLOG_PATH);
1264 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
1265 A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1266 strlen(shmlogname), shmlogname);
1271 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1274 void x_set_i3_atoms(void) {
1275 pid_t pid = getpid();
1276 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1277 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1278 current_socketpath);
1279 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1280 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1281 strlen(current_configpath), current_configpath);
1282 update_shmlog_atom();
1286 * Set warp_to coordinates. This will trigger on the next call to
1290 void x_set_warp_to(Rect *rect) {
1291 if (config.mouse_warping != POINTER_WARPING_NONE)
1296 * Applies the given mask to the event mask of every i3 window decoration X11
1297 * window. This is useful to disable EnterNotify while resizing so that focus
1301 void x_mask_event_mask(uint32_t mask) {
1302 uint32_t values[] = {FRAME_EVENT_MASK & mask};
1305 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1307 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);