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 = con_adjacent_borders(con) & config.hide_edge_borders;
508 Rect br = con_border_style_rect(con);
510 /* These rectangles represent the border around the child window
511 * (left, bottom and right part). We don’t just fill the whole
512 * rectangle because some childs are not freely resizable and we want
513 * their background color to "shine through". */
514 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
515 draw_util_rectangle(&(con->frame_buffer), p->color->child_border, 0, 0, br.x, r->height);
517 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
518 draw_util_rectangle(&(con->frame_buffer),
519 p->color->child_border, r->width + (br.width + br.x), 0,
520 -(br.width + br.x), r->height);
522 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
523 draw_util_rectangle(&(con->frame_buffer),
524 p->color->child_border, br.x, r->height + (br.height + br.y),
525 r->width + br.width, -(br.height + br.y));
527 /* pixel border needs an additional line at the top */
528 if (p->border_style == BS_PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
529 draw_util_rectangle(&(con->frame_buffer),
530 p->color->child_border, br.x, 0, r->width + br.width, br.y);
533 /* Highlight the side of the border at which the next window will be
534 * opened if we are rendering a single window within a split container
535 * (which is undistinguishable from a single window outside a split
536 * container otherwise. */
537 if (TAILQ_NEXT(con, nodes) == NULL &&
538 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
539 con->parent->type != CT_FLOATING_CON) {
540 if (p->parent_layout == L_SPLITH) {
541 draw_util_rectangle(&(con->frame_buffer), p->color->indicator,
542 r->width + (br.width + br.x), br.y, -(br.width + br.x), r->height + br.height);
543 } else if (p->parent_layout == L_SPLITV) {
544 draw_util_rectangle(&(con->frame_buffer), p->color->indicator,
545 br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y));
550 /* if this is a borderless/1pixel window, we don’t need to render the
552 if (p->border_style != BS_NORMAL)
555 /* If the parent hasn't been set up yet, skip the decoration rendering
557 if (parent->frame_buffer.id == XCB_NONE)
560 /* For the first child, we clear the parent pixmap to ensure there's no
561 * garbage left on there. This is important to avoid tearing when using
563 if (con == TAILQ_FIRST(&(con->parent->nodes_head))) {
564 draw_util_clear_surface(&(con->parent->frame_buffer), COLOR_TRANSPARENT);
565 FREE(con->parent->deco_render_params);
568 /* 4: paint the bar */
569 draw_util_rectangle(&(parent->frame_buffer), p->color->background,
570 con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height);
572 /* 5: draw two unconnected horizontal lines in border color */
573 x_draw_title_border(con, p);
575 /* 6: draw the title */
576 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
578 struct Window *win = con->window;
581 if (con->title_format == NULL) {
583 char *tree = con_get_tree_representation(con);
584 sasprintf(&_title, "i3: %s", tree);
587 title = i3string_from_utf8(_title);
590 title = con_parse_title_format(con);
593 draw_util_text(title, &(parent->frame_buffer),
594 p->color->text, p->color->background,
595 con->deco_rect.x + logical_px(2),
596 con->deco_rect.y + text_offset_y,
597 con->deco_rect.width - 2 * logical_px(2));
598 I3STRING_FREE(title);
604 if (config.show_marks && !TAILQ_EMPTY(&(con->marks_head))) {
605 char *formatted_mark = sstrdup("");
606 bool had_visible_mark = false;
609 TAILQ_FOREACH(mark, &(con->marks_head), marks) {
610 if (mark->name[0] == '_')
612 had_visible_mark = true;
615 sasprintf(&buf, "%s[%s]", formatted_mark, mark->name);
616 free(formatted_mark);
617 formatted_mark = buf;
620 if (had_visible_mark) {
621 i3String *mark = i3string_from_utf8(formatted_mark);
622 mark_width = predict_text_width(mark);
624 draw_util_text(mark, &(parent->frame_buffer),
625 p->color->text, p->color->background,
626 con->deco_rect.x + con->deco_rect.width - mark_width - logical_px(2),
627 con->deco_rect.y + text_offset_y, mark_width);
632 FREE(formatted_mark);
635 i3String *title = con->title_format == NULL ? win->name : con_parse_title_format(con);
640 draw_util_text(title, &(parent->frame_buffer),
641 p->color->text, p->color->background,
642 con->deco_rect.x + logical_px(2),
643 con->deco_rect.y + text_offset_y,
644 con->deco_rect.width - mark_width - 2 * logical_px(2));
646 if (con->title_format != NULL) {
647 I3STRING_FREE(title);
651 x_draw_decoration_after_title(con, p);
653 draw_util_copy_surface(&(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
657 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
658 * because x_push_node uses focus order to recurse (see the comment above)
659 * while drawing the decoration needs to happen in the actual order.
662 void x_deco_recurse(Con *con) {
664 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
665 TAILQ_EMPTY(&(con->floating_head));
666 con_state *state = state_for_frame(con->frame.id);
669 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
670 x_deco_recurse(current);
672 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
673 x_deco_recurse(current);
676 draw_util_copy_surface(&(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
680 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
681 (!leaf || con->mapped))
682 x_draw_decoration(con);
686 * Sets or removes the _NET_WM_STATE_HIDDEN property on con if necessary.
689 static void set_hidden_state(Con *con) {
690 if (con->window == NULL) {
694 con_state *state = state_for_frame(con->frame.id);
695 bool should_be_hidden = con_is_hidden(con);
696 if (should_be_hidden == state->is_hidden)
699 if (should_be_hidden) {
700 DLOG("setting _NET_WM_STATE_HIDDEN for con = %p\n", con);
701 xcb_add_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
703 DLOG("removing _NET_WM_STATE_HIDDEN for con = %p\n", con);
704 xcb_remove_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
707 state->is_hidden = should_be_hidden;
711 * This function pushes the properties of each node of the layout tree to
712 * X11 if they have changed (like the map state, position of the window, …).
713 * It recursively traverses all children of the given node.
716 void x_push_node(Con *con) {
719 Rect rect = con->rect;
721 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
722 state = state_for_frame(con->frame.id);
724 if (state->name != NULL) {
725 DLOG("pushing name %s for con %p\n", state->name, con);
727 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame.id,
728 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
732 if (con->window == NULL) {
733 /* Calculate the height of all window decorations which will be drawn on to
735 uint32_t max_y = 0, max_height = 0;
736 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
737 Rect *dr = &(current->deco_rect);
738 if (dr->y >= max_y && dr->height >= max_height) {
740 max_height = dr->height;
743 rect.height = max_y + max_height;
744 if (rect.height == 0)
748 /* reparent the child window (when the window was moved due to a sticky
750 if (state->need_reparent && con->window != NULL) {
751 DLOG("Reparenting child window\n");
753 /* Temporarily set the event masks to XCB_NONE so that we won’t get
754 * UnmapNotify events (otherwise the handler would close the container).
755 * These events are generated automatically when reparenting. */
756 uint32_t values[] = {XCB_NONE};
757 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
758 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
760 xcb_reparent_window(conn, con->window->id, con->frame.id, 0, 0);
762 values[0] = FRAME_EVENT_MASK;
763 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
764 values[0] = CHILD_EVENT_MASK;
765 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
767 state->old_frame = XCB_NONE;
768 state->need_reparent = false;
771 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
772 con, con->window->id, con->ignore_unmap);
775 /* The pixmap of a borderless leaf container will not be used except
776 * for the titlebar in a stack or tabs (issue #1013). */
777 bool is_pixmap_needed = (con->border_style != BS_NONE ||
779 con->parent->layout == L_STACKED ||
780 con->parent->layout == L_TABBED);
782 /* The root con and output cons will never require a pixmap. In particular for the
783 * __i3 output, this will likely not work anyway because it might be ridiculously
784 * large, causing an XCB_ALLOC error. */
785 if (con->type == CT_ROOT || con->type == CT_OUTPUT)
786 is_pixmap_needed = false;
788 bool fake_notify = false;
789 /* Set new position if rect changed (and if height > 0) or if the pixmap
790 * needs to be recreated */
791 if ((is_pixmap_needed && con->frame_buffer.id == XCB_NONE) || (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
793 /* We first create the new pixmap, then render to it, set it as the
794 * background and only afterwards change the window size. This reduces
797 bool has_rect_changed = (state->rect.x != rect.x || state->rect.y != rect.y ||
798 state->rect.width != rect.width || state->rect.height != rect.height);
800 /* Check if the container has an unneeded pixmap left over from
801 * previously having a border or titlebar. */
802 if (!is_pixmap_needed && con->frame_buffer.id != XCB_NONE) {
803 draw_util_surface_free(conn, &(con->frame_buffer));
804 xcb_free_pixmap(conn, con->frame_buffer.id);
805 con->frame_buffer.id = XCB_NONE;
808 if (is_pixmap_needed && (has_rect_changed || con->frame_buffer.id == XCB_NONE)) {
809 if (con->frame_buffer.id == XCB_NONE) {
810 con->frame_buffer.id = xcb_generate_id(conn);
812 draw_util_surface_free(conn, &(con->frame_buffer));
813 xcb_free_pixmap(conn, con->frame_buffer.id);
816 uint16_t win_depth = root_depth;
818 win_depth = con->window->depth;
820 /* Ensure we have valid dimensions for our surface. */
821 // TODO This is probably a bug in the condition above as we should never enter this path
822 // for height == 0. Also, we should probably handle width == 0 the same way.
823 int width = MAX((int32_t)rect.width, 1);
824 int height = MAX((int32_t)rect.height, 1);
826 xcb_create_pixmap(conn, win_depth, con->frame_buffer.id, con->frame.id, width, height);
827 draw_util_surface_init(conn, &(con->frame_buffer), con->frame_buffer.id,
828 get_visualtype_by_id(get_visualid_by_depth(win_depth)), width, height);
830 /* For the graphics context, we disable GraphicsExposure events.
831 * Those will be sent when a CopyArea request cannot be fulfilled
832 * properly due to parts of the source being unmapped or otherwise
833 * unavailable. Since we always copy from pixmaps to windows, this
834 * is not a concern for us. */
835 xcb_change_gc(conn, con->frame_buffer.gc, XCB_GC_GRAPHICS_EXPOSURES, (uint32_t[]){0});
837 draw_util_surface_set_size(&(con->frame), width, height);
838 con->pixmap_recreated = true;
840 /* Don’t render the decoration for windows inside a stack which are
841 * not visible right now */
842 // TODO Should this work the same way for L_TABBED?
844 con->parent->layout != L_STACKED ||
845 TAILQ_FIRST(&(con->parent->focus_head)) == con)
846 /* Render the decoration now to make the correct decoration visible
847 * from the very first moment. Later calls will be cached, so this
848 * doesn’t hurt performance. */
852 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
853 /* flush to ensure that the following commands are sent in a single
854 * buffer and will be processed directly afterwards (the contents of a
855 * window get lost when resizing it, therefore we want to provide it as
856 * fast as possible) */
858 xcb_set_window_rect(conn, con->frame.id, rect);
859 if (con->frame_buffer.id != XCB_NONE) {
860 draw_util_copy_surface(&(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
864 memcpy(&(state->rect), &rect, sizeof(Rect));
868 /* dito, but for child windows */
869 if (con->window != NULL &&
870 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
871 DLOG("setting window rect (%d, %d, %d, %d)\n",
872 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
873 xcb_set_window_rect(conn, con->window->id, con->window_rect);
874 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
878 /* Map if map state changed, also ensure that the child window
879 * is changed if we are mapped and there is a new, unmapped child window.
880 * Unmaps are handled in x_push_node_unmaps(). */
881 if ((state->mapped != con->mapped || (con->window != NULL && !state->child_mapped)) &&
883 xcb_void_cookie_t cookie;
885 if (con->window != NULL) {
886 /* Set WM_STATE_NORMAL because GTK applications don’t want to
887 * drag & drop if we don’t. Also, xprop(1) needs it. */
888 long data[] = {XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE};
889 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
890 A_WM_STATE, A_WM_STATE, 32, 2, data);
894 if (!state->child_mapped && con->window != NULL) {
895 cookie = xcb_map_window(conn, con->window->id);
897 /* We are interested in EnterNotifys as soon as the window is
899 values[0] = CHILD_EVENT_MASK;
900 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
901 DLOG("mapping child window (serial %d)\n", cookie.sequence);
902 state->child_mapped = true;
905 cookie = xcb_map_window(conn, con->frame.id);
907 values[0] = FRAME_EVENT_MASK;
908 xcb_change_window_attributes(conn, con->frame.id, XCB_CW_EVENT_MASK, values);
910 /* copy the pixmap contents to the frame window immediately after mapping */
911 if (con->frame_buffer.id != XCB_NONE) {
912 draw_util_copy_surface(&(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
916 DLOG("mapping container %08x (serial %d)\n", con->frame.id, cookie.sequence);
917 state->mapped = con->mapped;
920 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
923 DLOG("Sending fake configure notify\n");
924 fake_absolute_configure_notify(con);
927 set_hidden_state(con);
929 /* Handle all children and floating windows of this node. We recurse
930 * in focus order to display the focused client in a stack first when
931 * switching workspaces (reduces flickering). */
932 TAILQ_FOREACH(current, &(con->focus_head), focused) {
933 x_push_node(current);
938 * Same idea as in x_push_node(), but this function only unmaps windows. It is
939 * necessary to split this up to handle new fullscreen clients properly: The
940 * new window needs to be mapped and focus needs to be set *before* the
941 * underlying windows are unmapped. Otherwise, focus will revert to the
942 * PointerRoot and will then be set to the new window, generating unnecessary
943 * FocusIn/FocusOut events.
946 static void x_push_node_unmaps(Con *con) {
950 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
951 state = state_for_frame(con->frame.id);
953 /* map/unmap if map state changed, also ensure that the child window
954 * is changed if we are mapped *and* in initial state (meaning the
955 * container was empty before, but now got a child) */
956 if (state->unmap_now) {
957 xcb_void_cookie_t cookie;
958 if (con->window != NULL) {
959 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
960 long data[] = {XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE};
961 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
962 A_WM_STATE, A_WM_STATE, 32, 2, data);
965 cookie = xcb_unmap_window(conn, con->frame.id);
966 DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
967 /* we need to increase ignore_unmap for this container (if it
968 * contains a window) and for every window "under" this one which
969 * contains a window */
970 if (con->window != NULL) {
972 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame.id, con->ignore_unmap);
974 state->mapped = con->mapped;
977 /* handle all children and floating windows of this node */
978 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
979 x_push_node_unmaps(current);
981 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
982 x_push_node_unmaps(current);
986 * Returns true if the given container is currently attached to its parent.
988 * TODO: Remove once #1185 has been fixed
990 static bool is_con_attached(Con *con) {
991 if (con->parent == NULL)
995 TAILQ_FOREACH(current, &(con->parent->nodes_head), nodes) {
1004 * Pushes all changes (state of each node, see x_push_node() and the window
1007 * NOTE: We need to push the stack first so that the windows have the correct
1008 * stacking order. This is relevant for workspace switching where we map the
1009 * windows because mapping may generate EnterNotify events. When they are
1010 * generated in the wrong order, this will cause focus problems when switching
1014 void x_push_changes(Con *con) {
1016 xcb_query_pointer_cookie_t pointercookie;
1018 /* If we need to warp later, we request the pointer position as soon as possible */
1020 pointercookie = xcb_query_pointer(conn, root);
1023 DLOG("-- PUSHING WINDOW STACK --\n");
1024 //DLOG("Disabling EnterNotify\n");
1025 /* We need to keep SubstructureRedirect around, otherwise clients can send
1026 * ConfigureWindow requests and get them applied directly instead of having
1027 * them become ConfigureRequests that i3 handles. */
1028 uint32_t values[1] = {XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT};
1029 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1031 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1033 //DLOG("Done, EnterNotify disabled\n");
1034 bool order_changed = false;
1035 bool stacking_changed = false;
1037 /* count first, necessary to (re)allocate memory for the bottom-to-top
1038 * stack afterwards */
1040 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
1041 if (con_has_managed_window(state->con))
1044 /* The bottom-to-top window stack of all windows which are managed by i3.
1045 * Used for x_get_window_stack(). */
1046 static xcb_window_t *client_list_windows = NULL;
1047 static int client_list_count = 0;
1049 if (cnt != client_list_count) {
1050 client_list_windows = srealloc(client_list_windows, sizeof(xcb_window_t) * cnt);
1051 client_list_count = cnt;
1054 xcb_window_t *walk = client_list_windows;
1056 /* X11 correctly represents the stack if we push it from bottom to top */
1057 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1058 if (con_has_managed_window(state->con))
1059 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
1061 //DLOG("stack: 0x%08x\n", state->id);
1062 con_state *prev = CIRCLEQ_PREV(state, state);
1063 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
1064 if (prev != old_prev)
1065 order_changed = true;
1066 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
1067 stacking_changed = true;
1068 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
1070 mask |= XCB_CONFIG_WINDOW_SIBLING;
1071 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
1072 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
1074 xcb_configure_window(conn, prev->id, mask, values);
1076 state->initial = false;
1079 /* If we re-stacked something (or a new window appeared), we need to update
1080 * the _NET_CLIENT_LIST and _NET_CLIENT_LIST_STACKING hints */
1081 if (stacking_changed) {
1082 DLOG("Client list changed (%i clients)\n", cnt);
1083 ewmh_update_client_list_stacking(client_list_windows, client_list_count);
1085 walk = client_list_windows;
1087 /* reorder by initial mapping */
1088 TAILQ_FOREACH(state, &initial_mapping_head, initial_mapping_order) {
1089 if (con_has_managed_window(state->con))
1090 *walk++ = state->con->window->id;
1093 ewmh_update_client_list(client_list_windows, client_list_count);
1096 DLOG("PUSHING CHANGES\n");
1100 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
1101 if (!pointerreply) {
1102 ELOG("Could not query pointer position, not warping pointer\n");
1104 int mid_x = warp_to->x + (warp_to->width / 2);
1105 int mid_y = warp_to->y + (warp_to->height / 2);
1107 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
1108 Output *target = get_output_containing(mid_x, mid_y);
1109 if (current != target) {
1110 /* Ignore MotionNotify events generated by warping */
1111 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT});
1112 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
1113 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ROOT_EVENT_MASK});
1121 //DLOG("Re-enabling EnterNotify\n");
1122 values[0] = FRAME_EVENT_MASK;
1123 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1125 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1127 //DLOG("Done, EnterNotify re-enabled\n");
1129 x_deco_recurse(con);
1131 xcb_window_t to_focus = focused->frame.id;
1132 if (focused->window != NULL)
1133 to_focus = focused->window->id;
1135 if (focused_id != to_focus) {
1136 if (!focused->mapped) {
1137 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
1138 /* Invalidate focused_id to correctly focus new windows with the same ID */
1139 focused_id = XCB_NONE;
1141 if (focused->window != NULL &&
1142 focused->window->needs_take_focus &&
1143 focused->window->doesnt_accept_focus) {
1144 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
1145 to_focus, focused, focused->name);
1146 send_take_focus(to_focus, last_timestamp);
1148 change_ewmh_focus((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE), last_focused);
1150 if (to_focus != last_focused && is_con_attached(focused))
1151 ipc_send_window_event("focus", focused);
1153 DLOG("Updating focus (focused: %p / %s) to X11 window 0x%08x\n", focused, focused->name, to_focus);
1154 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
1155 * no focus change events for our own focus changes. We only want
1156 * these generated by the clients. */
1157 if (focused->window != NULL) {
1158 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
1159 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1161 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, last_timestamp);
1162 if (focused->window != NULL) {
1163 values[0] = CHILD_EVENT_MASK;
1164 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1167 change_ewmh_focus((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE), last_focused);
1169 if (to_focus != XCB_NONE && to_focus != last_focused && focused->window != NULL && is_con_attached(focused))
1170 ipc_send_window_event("focus", focused);
1173 focused_id = last_focused = to_focus;
1177 if (focused_id == XCB_NONE) {
1178 /* If we still have no window to focus, we focus the EWMH window instead. We use this rather than the
1179 * root window in order to avoid an X11 fallback mechanism causing a ghosting effect (see #1378). */
1180 DLOG("Still no window focused, better set focus to the EWMH support window (%d)\n", ewmh_window);
1181 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, ewmh_window, last_timestamp);
1182 change_ewmh_focus(XCB_WINDOW_NONE, last_focused);
1184 focused_id = ewmh_window;
1188 DLOG("ENDING CHANGES\n");
1190 /* Disable EnterWindow events for windows which will be unmapped in
1191 * x_push_node_unmaps() now. Unmapping windows happens when switching
1192 * workspaces. We want to avoid getting EnterNotifies during that phase
1193 * because they would screw up our focus. One of these cases is having a
1194 * stack with two windows. If the first window is focused and gets
1195 * unmapped, the second one appears under the cursor and therefore gets an
1196 * EnterNotify event. */
1197 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
1198 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1199 if (!state->unmap_now)
1201 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1204 /* Push all pending unmaps */
1205 x_push_node_unmaps(con);
1207 /* save the current stack as old stack */
1208 CIRCLEQ_FOREACH(state, &state_head, state) {
1209 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
1210 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
1212 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
1213 // DLOG("old stack: 0x%08x\n", state->id);
1220 * Raises the specified container in the internal stack of X windows. The
1221 * next call to x_push_changes() will make the change visible in X11.
1224 void x_raise_con(Con *con) {
1226 state = state_for_frame(con->frame.id);
1227 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1229 CIRCLEQ_REMOVE(&state_head, state, state);
1230 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1234 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1235 * of the given name. Used for properly tagging the windows for easily spotting
1236 * i3 windows in xwininfo -root -all.
1239 void x_set_name(Con *con, const char *name) {
1240 struct con_state *state;
1242 if ((state = state_for_frame(con->frame.id)) == NULL) {
1243 ELOG("window state not found\n");
1248 state->name = sstrdup(name);
1252 * Set up the I3_SHMLOG_PATH atom.
1255 void update_shmlog_atom(void) {
1256 if (*shmlogname == '\0') {
1257 xcb_delete_property(conn, root, A_I3_SHMLOG_PATH);
1259 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
1260 A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1261 strlen(shmlogname), shmlogname);
1266 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1269 void x_set_i3_atoms(void) {
1270 pid_t pid = getpid();
1271 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1272 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1273 current_socketpath);
1274 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1275 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1276 strlen(current_configpath), current_configpath);
1277 update_shmlog_atom();
1281 * Set warp_to coordinates. This will trigger on the next call to
1285 void x_set_warp_to(Rect *rect) {
1286 if (config.mouse_warping != POINTER_WARPING_NONE)
1291 * Applies the given mask to the event mask of every i3 window decoration X11
1292 * window. This is useful to disable EnterNotify while resizing so that focus
1296 void x_mask_event_mask(uint32_t mask) {
1297 uint32_t values[] = {FRAME_EVENT_MASK & mask};
1300 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1302 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);