2 #define I3__FILE__ "x.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
9 * x.c: Interface to X11, transfers our in-memory state to X11 (see also
10 * render.c). Basically a big state machine.
15 xcb_window_t ewmh_window;
17 /* Stores the X11 window ID of the currently focused window */
18 xcb_window_t focused_id = XCB_NONE;
20 /* Because 'focused_id' might be reset to force input focus, we separately keep
21 * track of the X11 window ID to be able to always tell whether the focused
22 * window actually changed. */
23 static xcb_window_t last_focused = XCB_NONE;
25 /* Stores coordinates to warp mouse pointer to if set */
29 * Describes the X11 state we may modify (map state, position, window stack).
30 * There is one entry per container. The state represents the current situation
31 * as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
32 * which represents the order that will be pushed to X11, while old_state_head
33 * represents the current order). It will be updated in x_push_changes().
36 typedef struct con_state {
43 /** The con for which this state is. */
46 /* For reparenting, we have a flag (need_reparent) and the X ID of the old
47 * frame this window was in. The latter is necessary because we need to
48 * ignore UnmapNotify events (by changing the window event mask). */
50 xcb_window_t old_frame;
59 CIRCLEQ_ENTRY(con_state) state;
60 CIRCLEQ_ENTRY(con_state) old_state;
61 TAILQ_ENTRY(con_state) initial_mapping_order;
64 CIRCLEQ_HEAD(state_head, con_state) state_head =
65 CIRCLEQ_HEAD_INITIALIZER(state_head);
67 CIRCLEQ_HEAD(old_state_head, con_state) old_state_head =
68 CIRCLEQ_HEAD_INITIALIZER(old_state_head);
70 TAILQ_HEAD(initial_mapping_head, con_state) initial_mapping_head =
71 TAILQ_HEAD_INITIALIZER(initial_mapping_head);
74 * Returns the container state for the given frame. This function always
75 * returns a container state (otherwise, there is a bug in the code and the
76 * container state of a container for which x_con_init() was not called was
80 static con_state *state_for_frame(xcb_window_t window) {
82 CIRCLEQ_FOREACH(state, &state_head, state)
83 if (state->id == window)
86 /* TODO: better error handling? */
87 ELOG("No state found\n");
93 * Initializes the X11 part for the given container. Called exactly once for
94 * every container from con_new().
97 void x_con_init(Con *con, uint16_t depth) {
98 /* TODO: maybe create the window when rendering first? we could then even
99 * get the initial geometry right */
104 /* For custom visuals, we need to create a colormap before creating
105 * this window. It will be freed directly after creating the window. */
106 xcb_visualid_t visual = get_visualid_by_depth(depth);
107 xcb_colormap_t win_colormap = xcb_generate_id(conn);
108 xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
110 /* We explicitly set a background color and border color (even though we
111 * don’t even have a border) because the X11 server requires us to when
112 * using 32 bit color depths, see
113 * http://stackoverflow.com/questions/3645632 */
114 mask |= XCB_CW_BACK_PIXEL;
115 values[0] = root_screen->black_pixel;
117 mask |= XCB_CW_BORDER_PIXEL;
118 values[1] = root_screen->black_pixel;
120 /* our own frames should not be managed */
121 mask |= XCB_CW_OVERRIDE_REDIRECT;
124 /* see include/xcb.h for the FRAME_EVENT_MASK */
125 mask |= XCB_CW_EVENT_MASK;
126 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
128 mask |= XCB_CW_COLORMAP;
129 values[4] = win_colormap;
131 Rect dims = {-15, -15, 10, 10};
132 xcb_window_t frame_id = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
133 draw_util_surface_init(conn, &(con->frame), frame_id, get_visualtype_by_id(visual), dims.width, dims.height);
134 xcb_change_property(conn,
135 XCB_PROP_MODE_REPLACE,
140 (strlen("i3-frame") + 1) * 2,
141 "i3-frame\0i3-frame\0");
143 if (win_colormap != XCB_NONE)
144 xcb_free_colormap(conn, win_colormap);
146 struct con_state *state = scalloc(1, sizeof(struct con_state));
147 state->id = con->frame.id;
148 state->mapped = false;
149 state->initial = true;
150 DLOG("Adding window 0x%08x to lists\n", state->id);
151 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
152 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
153 TAILQ_INSERT_TAIL(&initial_mapping_head, state, initial_mapping_order);
154 DLOG("adding new state for window id 0x%08x\n", state->id);
158 * Re-initializes the associated X window state for this container. You have
159 * to call this when you assign a client to an empty container to ensure that
160 * its state gets updated correctly.
163 void x_reinit(Con *con) {
164 struct con_state *state;
166 if ((state = state_for_frame(con->frame.id)) == NULL) {
167 ELOG("window state not found\n");
171 DLOG("resetting state %p to initial\n", state);
172 state->initial = true;
173 state->child_mapped = false;
175 memset(&(state->window_rect), 0, sizeof(Rect));
179 * Reparents the child window of the given container (necessary for sticky
180 * containers). The reparenting happens in the next call of x_push_changes().
183 void x_reparent_child(Con *con, Con *old) {
184 struct con_state *state;
185 if ((state = state_for_frame(con->frame.id)) == NULL) {
186 ELOG("window state for con not found\n");
190 state->need_reparent = true;
191 state->old_frame = old->frame.id;
195 * Moves a child window from Container src to Container dest.
198 void x_move_win(Con *src, Con *dest) {
199 struct con_state *state_src, *state_dest;
201 if ((state_src = state_for_frame(src->frame.id)) == NULL) {
202 ELOG("window state for src not found\n");
206 if ((state_dest = state_for_frame(dest->frame.id)) == NULL) {
207 ELOG("window state for dest not found\n");
211 state_dest->con = state_src->con;
212 state_src->con = NULL;
214 Rect zero = {0, 0, 0, 0};
215 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
216 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
217 DLOG("COPYING RECT\n");
222 * Kills the window decoration associated with the given container.
225 void x_con_kill(Con *con) {
228 draw_util_surface_free(conn, &(con->frame));
229 draw_util_surface_free(conn, &(con->frame_buffer));
230 xcb_destroy_window(conn, con->frame.id);
231 xcb_free_pixmap(conn, con->frame_buffer.id);
232 state = state_for_frame(con->frame.id);
233 CIRCLEQ_REMOVE(&state_head, state, state);
234 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
235 TAILQ_REMOVE(&initial_mapping_head, state, initial_mapping_order);
239 /* Invalidate focused_id to correctly focus new windows with the same ID */
240 focused_id = last_focused = XCB_NONE;
244 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
247 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
248 xcb_get_property_cookie_t cookie;
249 xcb_icccm_get_wm_protocols_reply_t protocols;
252 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
253 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
256 /* Check if the client’s protocols have the requested atom set */
257 for (uint32_t i = 0; i < protocols.atoms_len; i++)
258 if (protocols.atoms[i] == atom)
261 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
267 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
270 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
271 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
272 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
273 if (kill_window == KILL_WINDOW) {
274 LOG("Killing specific window 0x%08x\n", window);
275 xcb_destroy_window(conn, window);
277 LOG("Killing the X11 client which owns window 0x%08x\n", window);
278 xcb_kill_client(conn, window);
283 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
284 * In order to properly initialize these bytes, we allocate 32 bytes even
285 * though we only need less for an xcb_configure_notify_event_t */
286 void *event = scalloc(32, 1);
287 xcb_client_message_event_t *ev = event;
289 ev->response_type = XCB_CLIENT_MESSAGE;
291 ev->type = A_WM_PROTOCOLS;
293 ev->data.data32[0] = A_WM_DELETE_WINDOW;
294 ev->data.data32[1] = XCB_CURRENT_TIME;
296 LOG("Sending WM_DELETE to the client\n");
297 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
302 static void x_draw_title_border(Con *con, struct deco_render_params *p) {
303 assert(con->parent != NULL);
305 Rect *dr = &(con->deco_rect);
306 adjacent_t borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
307 int deco_diff_l = borders_to_hide & ADJ_LEFT_SCREEN_EDGE ? 0 : con->current_border_width;
308 int deco_diff_r = borders_to_hide & ADJ_RIGHT_SCREEN_EDGE ? 0 : con->current_border_width;
309 if (con->parent->layout == L_TABBED ||
310 (con->parent->layout == L_STACKED && TAILQ_NEXT(con, nodes) != NULL)) {
315 draw_util_rectangle(conn, &(con->parent->frame_buffer), p->color->border,
316 dr->x, dr->y, dr->width, 1);
318 draw_util_rectangle(conn, &(con->parent->frame_buffer), p->color->border,
319 dr->x + deco_diff_l, dr->y + dr->height - 1, dr->width - (deco_diff_l + deco_diff_r), 1);
322 static void x_draw_decoration_after_title(Con *con, struct deco_render_params *p) {
323 assert(con->parent != NULL);
325 Rect *dr = &(con->deco_rect);
326 Rect br = con_border_style_rect(con);
328 /* Redraw the right border to cut off any text that went past it.
329 * This is necessary when the text was drawn using XCB since cutting text off
330 * automatically does not work there. For pango rendering, this isn't necessary. */
331 draw_util_rectangle(conn, &(con->parent->frame_buffer), p->color->background,
332 dr->x + dr->width + br.width, dr->y, -br.width, dr->height);
334 /* Draw a 1px separator line before and after every tab, so that tabs can
335 * be easily distinguished. */
336 if (con->parent->layout == L_TABBED) {
338 draw_util_rectangle(conn, &(con->parent->frame_buffer), p->color->border,
339 dr->x, dr->y, 1, dr->height);
342 draw_util_rectangle(conn, &(con->parent->frame_buffer), p->color->border,
343 dr->x + dr->width - 1, dr->y, 1, dr->height);
346 /* Redraw the border. */
347 x_draw_title_border(con, p);
351 * Draws the decoration of the given container onto its parent.
354 void x_draw_decoration(Con *con) {
355 Con *parent = con->parent;
356 bool leaf = con_is_leaf(con);
358 /* This code needs to run for:
360 * • non-leaf containers which are in a stacked/tabbed container
362 * It does not need to run for:
363 * • direct children of outputs or dockareas
364 * • floating containers (they don’t have a decoration)
367 parent->layout != L_STACKED &&
368 parent->layout != L_TABBED) ||
369 parent->type == CT_OUTPUT ||
370 parent->type == CT_DOCKAREA ||
371 con->type == CT_FLOATING_CON)
374 /* Skip containers whose height is 0 (for example empty dockareas) */
375 if (con->rect.height == 0)
378 /* Skip containers whose pixmap has not yet been created (can happen when
379 * decoration rendering happens recursively for a window for which
380 * x_push_node() was not yet called) */
381 if (leaf && con->frame_buffer.id == XCB_NONE)
384 /* 1: build deco_params and compare with cache */
385 struct deco_render_params *p = scalloc(1, sizeof(struct deco_render_params));
387 /* find out which colors to use */
389 p->color = &config.client.urgent;
390 else if (con == focused || con_inside_focused(con))
391 p->color = &config.client.focused;
392 else if (con == TAILQ_FIRST(&(parent->focus_head)))
393 p->color = &config.client.focused_inactive;
395 p->color = &config.client.unfocused;
397 p->border_style = con_border_style(con);
399 Rect *r = &(con->rect);
400 Rect *w = &(con->window_rect);
401 p->con_rect = (struct width_height){r->width, r->height};
402 p->con_window_rect = (struct width_height){w->width, w->height};
403 p->con_deco_rect = con->deco_rect;
404 p->background = config.client.background;
405 p->con_is_leaf = con_is_leaf(con);
406 p->parent_layout = con->parent->layout;
408 if (con->deco_render_params != NULL &&
409 (con->window == NULL || !con->window->name_x_changed) &&
410 !parent->pixmap_recreated &&
411 !con->pixmap_recreated &&
412 !con->mark_changed &&
413 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
419 while ((next = TAILQ_NEXT(next, nodes))) {
420 FREE(next->deco_render_params);
423 FREE(con->deco_render_params);
424 con->deco_render_params = p;
426 if (con->window != NULL && con->window->name_x_changed)
427 con->window->name_x_changed = false;
429 parent->pixmap_recreated = false;
430 con->pixmap_recreated = false;
431 con->mark_changed = false;
433 /* 2: draw the client.background, but only for the parts around the window_rect */
434 if (con->window != NULL) {
436 draw_util_rectangle(conn, &(con->frame_buffer), config.client.background,
437 0, 0, r->width, w->y);
439 draw_util_rectangle(conn, &(con->frame_buffer), config.client.background,
440 0, w->y + w->height, r->width, r->height - (w->y + w->height));
442 draw_util_rectangle(conn, &(con->frame_buffer), config.client.background,
443 0, 0, w->x, r->height);
445 draw_util_rectangle(conn, &(con->frame_buffer), config.client.background,
446 w->x + w->width, 0, r->width - (w->x + w->width), r->height);
449 /* 3: draw a rectangle in border color around the client */
450 if (p->border_style != BS_NONE && p->con_is_leaf) {
451 /* We might hide some borders adjacent to the screen-edge */
452 adjacent_t borders_to_hide = ADJ_NONE;
453 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
455 Rect br = con_border_style_rect(con);
457 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
458 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
459 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);
462 /* These rectangles represent the border around the child window
463 * (left, bottom and right part). We don’t just fill the whole
464 * rectangle because some childs are not freely resizable and we want
465 * their background color to "shine through". */
466 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
467 draw_util_rectangle(conn, &(con->frame_buffer), p->color->child_border, 0, 0, br.x, r->height);
469 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
470 draw_util_rectangle(conn, &(con->frame_buffer),
471 p->color->child_border, r->width + (br.width + br.x), 0,
472 -(br.width + br.x), r->height);
474 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
475 draw_util_rectangle(conn, &(con->frame_buffer),
476 p->color->child_border, br.x, r->height + (br.height + br.y),
477 r->width + br.width, -(br.height + br.y));
479 /* pixel border needs an additional line at the top */
480 if (p->border_style == BS_PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
481 draw_util_rectangle(conn, &(con->frame_buffer),
482 p->color->child_border, br.x, 0, r->width + br.width, br.y);
485 /* Highlight the side of the border at which the next window will be
486 * opened if we are rendering a single window within a split container
487 * (which is undistinguishable from a single window outside a split
488 * container otherwise. */
489 if (TAILQ_NEXT(con, nodes) == NULL &&
490 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
491 con->parent->type != CT_FLOATING_CON) {
492 if (p->parent_layout == L_SPLITH) {
493 draw_util_rectangle(conn, &(con->frame_buffer), p->color->indicator,
494 r->width + (br.width + br.x), br.y, -(br.width + br.x), r->height + br.height);
495 } else if (p->parent_layout == L_SPLITV) {
496 draw_util_rectangle(conn, &(con->frame_buffer), p->color->indicator,
497 br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y));
502 /* if this is a borderless/1pixel window, we don’t need to render the
504 if (p->border_style != BS_NORMAL)
507 /* If the parent hasn't been set up yet, skip the decoration rendering
509 if (parent->frame_buffer.id == XCB_NONE)
512 /* For the first child, we clear the parent pixmap to ensure there's no
513 * garbage left on there. This is important to avoid tearing when using
515 if (con == TAILQ_FIRST(&(con->parent->nodes_head))) {
516 draw_util_clear_surface(conn, &(con->parent->frame_buffer), COLOR_TRANSPARENT);
517 FREE(con->parent->deco_render_params);
520 /* 4: paint the bar */
521 draw_util_rectangle(conn, &(parent->frame_buffer), p->color->background,
522 con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height);
524 /* 5: draw two unconnected horizontal lines in border color */
525 x_draw_title_border(con, p);
527 /* 6: draw the title */
528 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
530 struct Window *win = con->window;
533 if (con->title_format == NULL) {
535 char *tree = con_get_tree_representation(con);
536 sasprintf(&_title, "i3: %s", tree);
539 title = i3string_from_utf8(_title);
542 title = con_parse_title_format(con);
545 draw_util_text(title, &(parent->frame_buffer),
546 p->color->text, p->color->background,
547 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
548 con->deco_rect.width - 2);
549 I3STRING_FREE(title);
554 if (win->name == NULL)
557 int indent_level = 0,
559 Con *il_parent = parent;
560 if (il_parent->layout != L_STACKED) {
562 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
563 if (il_parent->layout == L_STACKED)
565 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
567 il_parent = il_parent->parent;
571 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
572 int indent_px = (indent_level * 5) * indent_mult;
575 if (config.show_marks && !TAILQ_EMPTY(&(con->marks_head))) {
576 char *formatted_mark = sstrdup("");
577 bool had_visible_mark = false;
580 TAILQ_FOREACH(mark, &(con->marks_head), marks) {
581 if (mark->name[0] == '_')
583 had_visible_mark = true;
586 sasprintf(&buf, "%s[%s]", formatted_mark, mark->name);
587 free(formatted_mark);
588 formatted_mark = buf;
591 if (had_visible_mark) {
592 i3String *mark = i3string_from_utf8(formatted_mark);
593 mark_width = predict_text_width(mark);
595 draw_util_text(mark, &(parent->frame_buffer),
596 p->color->text, p->color->background,
597 con->deco_rect.x + con->deco_rect.width - mark_width - logical_px(2),
598 con->deco_rect.y + text_offset_y, mark_width);
603 FREE(formatted_mark);
606 i3String *title = con->title_format == NULL ? win->name : con_parse_title_format(con);
607 draw_util_text(title, &(parent->frame_buffer),
608 p->color->text, p->color->background,
609 con->deco_rect.x + logical_px(2) + indent_px, con->deco_rect.y + text_offset_y,
610 con->deco_rect.width - logical_px(2) - indent_px - mark_width - logical_px(2));
611 if (con->title_format != NULL)
612 I3STRING_FREE(title);
615 x_draw_decoration_after_title(con, p);
617 draw_util_copy_surface(conn, &(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
621 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
622 * because x_push_node uses focus order to recurse (see the comment above)
623 * while drawing the decoration needs to happen in the actual order.
626 void x_deco_recurse(Con *con) {
628 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
629 TAILQ_EMPTY(&(con->floating_head));
630 con_state *state = state_for_frame(con->frame.id);
633 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
634 x_deco_recurse(current);
636 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
637 x_deco_recurse(current);
640 draw_util_copy_surface(conn, &(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
644 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
645 (!leaf || con->mapped))
646 x_draw_decoration(con);
650 * Sets or removes the _NET_WM_STATE_HIDDEN property on con if necessary.
653 static void set_hidden_state(Con *con) {
654 if (con->window == NULL) {
658 con_state *state = state_for_frame(con->frame.id);
659 bool should_be_hidden = con_is_hidden(con);
660 if (should_be_hidden == state->is_hidden)
663 if (should_be_hidden) {
664 DLOG("setting _NET_WM_STATE_HIDDEN for con = %p\n", con);
665 xcb_add_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
667 DLOG("removing _NET_WM_STATE_HIDDEN for con = %p\n", con);
668 xcb_remove_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
671 state->is_hidden = should_be_hidden;
675 * This function pushes the properties of each node of the layout tree to
676 * X11 if they have changed (like the map state, position of the window, …).
677 * It recursively traverses all children of the given node.
680 void x_push_node(Con *con) {
683 Rect rect = con->rect;
685 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
686 state = state_for_frame(con->frame.id);
688 if (state->name != NULL) {
689 DLOG("pushing name %s for con %p\n", state->name, con);
691 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame.id,
692 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
696 if (con->window == NULL) {
697 /* Calculate the height of all window decorations which will be drawn on to
699 uint32_t max_y = 0, max_height = 0;
700 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
701 Rect *dr = &(current->deco_rect);
702 if (dr->y >= max_y && dr->height >= max_height) {
704 max_height = dr->height;
707 rect.height = max_y + max_height;
708 if (rect.height == 0)
712 /* reparent the child window (when the window was moved due to a sticky
714 if (state->need_reparent && con->window != NULL) {
715 DLOG("Reparenting child window\n");
717 /* Temporarily set the event masks to XCB_NONE so that we won’t get
718 * UnmapNotify events (otherwise the handler would close the container).
719 * These events are generated automatically when reparenting. */
720 uint32_t values[] = {XCB_NONE};
721 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
722 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
724 xcb_reparent_window(conn, con->window->id, con->frame.id, 0, 0);
726 values[0] = FRAME_EVENT_MASK;
727 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
728 values[0] = CHILD_EVENT_MASK;
729 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
731 state->old_frame = XCB_NONE;
732 state->need_reparent = false;
735 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
736 con, con->window->id, con->ignore_unmap);
739 /* The pixmap of a borderless leaf container will not be used except
740 * for the titlebar in a stack or tabs (issue #1013). */
741 bool is_pixmap_needed = (con->border_style != BS_NONE ||
743 con->parent->layout == L_STACKED ||
744 con->parent->layout == L_TABBED);
746 /* The root con and output cons will never require a pixmap. In particular for the
747 * __i3 output, this will likely not work anyway because it might be ridiculously
748 * large, causing an XCB_ALLOC error. */
749 if (con->type == CT_ROOT || con->type == CT_OUTPUT)
750 is_pixmap_needed = false;
752 bool fake_notify = false;
753 /* Set new position if rect changed (and if height > 0) or if the pixmap
754 * needs to be recreated */
755 if ((is_pixmap_needed && con->frame_buffer.id == XCB_NONE) || (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
757 /* We first create the new pixmap, then render to it, set it as the
758 * background and only afterwards change the window size. This reduces
761 /* As the pixmap only depends on the size and not on the position, it
762 * is enough to check if width/height have changed. Also, we don’t
763 * create a pixmap at all when the window is actually not visible
764 * (height == 0) or when it is not needed. */
765 bool has_rect_changed = (state->rect.width != rect.width || state->rect.height != rect.height);
767 /* Check if the container has an unneeded pixmap left over from
768 * previously having a border or titlebar. */
769 if (!is_pixmap_needed && con->frame_buffer.id != XCB_NONE) {
770 draw_util_surface_free(conn, &(con->frame_buffer));
771 xcb_free_pixmap(conn, con->frame_buffer.id);
772 con->frame_buffer.id = XCB_NONE;
775 if (is_pixmap_needed && (has_rect_changed || con->frame_buffer.id == XCB_NONE)) {
776 if (con->frame_buffer.id == XCB_NONE) {
777 con->frame_buffer.id = xcb_generate_id(conn);
779 draw_util_surface_free(conn, &(con->frame_buffer));
780 xcb_free_pixmap(conn, con->frame_buffer.id);
783 uint16_t win_depth = root_depth;
785 win_depth = con->window->depth;
787 /* Ensure we have valid dimensions for our surface. */
788 // TODO This is probably a bug in the condition above as we should never enter this path
789 // for height == 0. Also, we should probably handle width == 0 the same way.
790 int width = MAX((int32_t)rect.width, 1);
791 int height = MAX((int32_t)rect.height, 1);
793 xcb_create_pixmap_checked(conn, win_depth, con->frame_buffer.id, con->frame.id, width, height);
794 draw_util_surface_init(conn, &(con->frame_buffer), con->frame_buffer.id,
795 get_visualtype_by_id(get_visualid_by_depth(win_depth)), width, height);
797 /* For the graphics context, we disable GraphicsExposure events.
798 * Those will be sent when a CopyArea request cannot be fulfilled
799 * properly due to parts of the source being unmapped or otherwise
800 * unavailable. Since we always copy from pixmaps to windows, this
801 * is not a concern for us. */
802 xcb_change_gc(conn, con->frame_buffer.gc, XCB_GC_GRAPHICS_EXPOSURES, (uint32_t[]){0});
804 draw_util_surface_set_size(&(con->frame), width, height);
805 con->pixmap_recreated = true;
807 /* Don’t render the decoration for windows inside a stack which are
808 * not visible right now */
809 // TODO Should this work the same way for L_TABBED?
811 con->parent->layout != L_STACKED ||
812 TAILQ_FIRST(&(con->parent->focus_head)) == con)
813 /* Render the decoration now to make the correct decoration visible
814 * from the very first moment. Later calls will be cached, so this
815 * doesn’t hurt performance. */
819 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
820 /* flush to ensure that the following commands are sent in a single
821 * buffer and will be processed directly afterwards (the contents of a
822 * window get lost when resizing it, therefore we want to provide it as
823 * fast as possible) */
825 xcb_set_window_rect(conn, con->frame.id, rect);
826 if (con->frame_buffer.id != XCB_NONE) {
827 draw_util_copy_surface(conn, &(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
831 memcpy(&(state->rect), &rect, sizeof(Rect));
835 /* dito, but for child windows */
836 if (con->window != NULL &&
837 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
838 DLOG("setting window rect (%d, %d, %d, %d)\n",
839 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
840 xcb_set_window_rect(conn, con->window->id, con->window_rect);
841 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
845 /* Map if map state changed, also ensure that the child window
846 * is changed if we are mapped and there is a new, unmapped child window.
847 * Unmaps are handled in x_push_node_unmaps(). */
848 if ((state->mapped != con->mapped || (con->window != NULL && !state->child_mapped)) &&
850 xcb_void_cookie_t cookie;
852 if (con->window != NULL) {
853 /* Set WM_STATE_NORMAL because GTK applications don’t want to
854 * drag & drop if we don’t. Also, xprop(1) needs it. */
855 long data[] = {XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE};
856 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
857 A_WM_STATE, A_WM_STATE, 32, 2, data);
861 if (!state->child_mapped && con->window != NULL) {
862 cookie = xcb_map_window(conn, con->window->id);
864 /* We are interested in EnterNotifys as soon as the window is
866 values[0] = CHILD_EVENT_MASK;
867 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
868 DLOG("mapping child window (serial %d)\n", cookie.sequence);
869 state->child_mapped = true;
872 cookie = xcb_map_window(conn, con->frame.id);
874 values[0] = FRAME_EVENT_MASK;
875 xcb_change_window_attributes(conn, con->frame.id, XCB_CW_EVENT_MASK, values);
877 /* copy the pixmap contents to the frame window immediately after mapping */
878 if (con->frame_buffer.id != XCB_NONE) {
879 draw_util_copy_surface(conn, &(con->frame_buffer), &(con->frame), 0, 0, 0, 0, con->rect.width, con->rect.height);
883 DLOG("mapping container %08x (serial %d)\n", con->frame.id, cookie.sequence);
884 state->mapped = con->mapped;
887 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
890 DLOG("Sending fake configure notify\n");
891 fake_absolute_configure_notify(con);
894 set_hidden_state(con);
896 /* Handle all children and floating windows of this node. We recurse
897 * in focus order to display the focused client in a stack first when
898 * switching workspaces (reduces flickering). */
899 TAILQ_FOREACH(current, &(con->focus_head), focused)
900 x_push_node(current);
904 * Same idea as in x_push_node(), but this function only unmaps windows. It is
905 * necessary to split this up to handle new fullscreen clients properly: The
906 * new window needs to be mapped and focus needs to be set *before* the
907 * underlying windows are unmapped. Otherwise, focus will revert to the
908 * PointerRoot and will then be set to the new window, generating unnecessary
909 * FocusIn/FocusOut events.
912 static void x_push_node_unmaps(Con *con) {
916 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
917 state = state_for_frame(con->frame.id);
919 /* map/unmap if map state changed, also ensure that the child window
920 * is changed if we are mapped *and* in initial state (meaning the
921 * container was empty before, but now got a child) */
922 if (state->unmap_now) {
923 xcb_void_cookie_t cookie;
924 if (con->window != NULL) {
925 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
926 long data[] = {XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE};
927 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
928 A_WM_STATE, A_WM_STATE, 32, 2, data);
931 cookie = xcb_unmap_window(conn, con->frame.id);
932 DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
933 /* we need to increase ignore_unmap for this container (if it
934 * contains a window) and for every window "under" this one which
935 * contains a window */
936 if (con->window != NULL) {
938 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame.id, con->ignore_unmap);
940 state->mapped = con->mapped;
943 /* handle all children and floating windows of this node */
944 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
945 x_push_node_unmaps(current);
947 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
948 x_push_node_unmaps(current);
952 * Returns true if the given container is currently attached to its parent.
954 * TODO: Remove once #1185 has been fixed
956 static bool is_con_attached(Con *con) {
957 if (con->parent == NULL)
961 TAILQ_FOREACH(current, &(con->parent->nodes_head), nodes) {
970 * Pushes all changes (state of each node, see x_push_node() and the window
973 * NOTE: We need to push the stack first so that the windows have the correct
974 * stacking order. This is relevant for workspace switching where we map the
975 * windows because mapping may generate EnterNotify events. When they are
976 * generated in the wrong order, this will cause focus problems when switching
980 void x_push_changes(Con *con) {
982 xcb_query_pointer_cookie_t pointercookie;
984 /* If we need to warp later, we request the pointer position as soon as possible */
986 pointercookie = xcb_query_pointer(conn, root);
989 DLOG("-- PUSHING WINDOW STACK --\n");
990 //DLOG("Disabling EnterNotify\n");
991 /* We need to keep SubstructureRedirect around, otherwise clients can send
992 * ConfigureWindow requests and get them applied directly instead of having
993 * them become ConfigureRequests that i3 handles. */
994 uint32_t values[1] = {XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT};
995 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
997 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
999 //DLOG("Done, EnterNotify disabled\n");
1000 bool order_changed = false;
1001 bool stacking_changed = false;
1003 /* count first, necessary to (re)allocate memory for the bottom-to-top
1004 * stack afterwards */
1006 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
1007 if (con_has_managed_window(state->con))
1010 /* The bottom-to-top window stack of all windows which are managed by i3.
1011 * Used for x_get_window_stack(). */
1012 static xcb_window_t *client_list_windows = NULL;
1013 static int client_list_count = 0;
1015 if (cnt != client_list_count) {
1016 client_list_windows = srealloc(client_list_windows, sizeof(xcb_window_t) * cnt);
1017 client_list_count = cnt;
1020 xcb_window_t *walk = client_list_windows;
1022 /* X11 correctly represents the stack if we push it from bottom to top */
1023 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1024 if (con_has_managed_window(state->con))
1025 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
1027 //DLOG("stack: 0x%08x\n", state->id);
1028 con_state *prev = CIRCLEQ_PREV(state, state);
1029 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
1030 if (prev != old_prev)
1031 order_changed = true;
1032 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
1033 stacking_changed = true;
1034 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
1036 mask |= XCB_CONFIG_WINDOW_SIBLING;
1037 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
1038 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
1040 xcb_configure_window(conn, prev->id, mask, values);
1042 state->initial = false;
1045 /* If we re-stacked something (or a new window appeared), we need to update
1046 * the _NET_CLIENT_LIST and _NET_CLIENT_LIST_STACKING hints */
1047 if (stacking_changed) {
1048 DLOG("Client list changed (%i clients)\n", cnt);
1049 ewmh_update_client_list_stacking(client_list_windows, client_list_count);
1051 walk = client_list_windows;
1053 /* reorder by initial mapping */
1054 TAILQ_FOREACH(state, &initial_mapping_head, initial_mapping_order) {
1055 if (con_has_managed_window(state->con))
1056 *walk++ = state->con->window->id;
1059 ewmh_update_client_list(client_list_windows, client_list_count);
1062 DLOG("PUSHING CHANGES\n");
1066 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
1067 if (!pointerreply) {
1068 ELOG("Could not query pointer position, not warping pointer\n");
1070 int mid_x = warp_to->x + (warp_to->width / 2);
1071 int mid_y = warp_to->y + (warp_to->height / 2);
1073 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
1074 Output *target = get_output_containing(mid_x, mid_y);
1075 if (current != target) {
1076 /* Ignore MotionNotify events generated by warping */
1077 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT});
1078 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
1079 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ROOT_EVENT_MASK});
1087 //DLOG("Re-enabling EnterNotify\n");
1088 values[0] = FRAME_EVENT_MASK;
1089 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1091 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1093 //DLOG("Done, EnterNotify re-enabled\n");
1095 x_deco_recurse(con);
1097 xcb_window_t to_focus = focused->frame.id;
1098 if (focused->window != NULL)
1099 to_focus = focused->window->id;
1101 if (focused_id != to_focus) {
1102 if (!focused->mapped) {
1103 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
1104 /* Invalidate focused_id to correctly focus new windows with the same ID */
1105 focused_id = XCB_NONE;
1107 if (focused->window != NULL &&
1108 focused->window->needs_take_focus &&
1109 focused->window->doesnt_accept_focus) {
1110 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
1111 to_focus, focused, focused->name);
1112 send_take_focus(to_focus, last_timestamp);
1114 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1116 if (to_focus != last_focused && is_con_attached(focused))
1117 ipc_send_window_event("focus", focused);
1119 DLOG("Updating focus (focused: %p / %s) to X11 window 0x%08x\n", focused, focused->name, to_focus);
1120 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
1121 * no focus change events for our own focus changes. We only want
1122 * these generated by the clients. */
1123 if (focused->window != NULL) {
1124 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
1125 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1127 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
1128 if (focused->window != NULL) {
1129 values[0] = CHILD_EVENT_MASK;
1130 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1133 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1135 if (to_focus != XCB_NONE && to_focus != last_focused && focused->window != NULL && is_con_attached(focused))
1136 ipc_send_window_event("focus", focused);
1139 focused_id = last_focused = to_focus;
1143 if (focused_id == XCB_NONE) {
1144 /* If we still have no window to focus, we focus the EWMH window instead. We use this rather than the
1145 * root window in order to avoid an X11 fallback mechanism causing a ghosting effect (see #1378). */
1146 DLOG("Still no window focused, better set focus to the EWMH support window (%d)\n", ewmh_window);
1147 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, ewmh_window, XCB_CURRENT_TIME);
1148 ewmh_update_active_window(XCB_WINDOW_NONE);
1149 focused_id = ewmh_window;
1153 DLOG("ENDING CHANGES\n");
1155 /* Disable EnterWindow events for windows which will be unmapped in
1156 * x_push_node_unmaps() now. Unmapping windows happens when switching
1157 * workspaces. We want to avoid getting EnterNotifies during that phase
1158 * because they would screw up our focus. One of these cases is having a
1159 * stack with two windows. If the first window is focused and gets
1160 * unmapped, the second one appears under the cursor and therefore gets an
1161 * EnterNotify event. */
1162 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
1163 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1164 if (!state->unmap_now)
1166 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1169 /* Push all pending unmaps */
1170 x_push_node_unmaps(con);
1172 /* save the current stack as old stack */
1173 CIRCLEQ_FOREACH(state, &state_head, state) {
1174 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
1175 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
1177 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
1178 // DLOG("old stack: 0x%08x\n", state->id);
1185 * Raises the specified container in the internal stack of X windows. The
1186 * next call to x_push_changes() will make the change visible in X11.
1189 void x_raise_con(Con *con) {
1191 state = state_for_frame(con->frame.id);
1192 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1194 CIRCLEQ_REMOVE(&state_head, state, state);
1195 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1199 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1200 * of the given name. Used for properly tagging the windows for easily spotting
1201 * i3 windows in xwininfo -root -all.
1204 void x_set_name(Con *con, const char *name) {
1205 struct con_state *state;
1207 if ((state = state_for_frame(con->frame.id)) == NULL) {
1208 ELOG("window state not found\n");
1213 state->name = sstrdup(name);
1217 * Set up the I3_SHMLOG_PATH atom.
1220 void update_shmlog_atom() {
1221 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
1222 A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1223 strlen(shmlogname), shmlogname);
1227 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1230 void x_set_i3_atoms(void) {
1231 pid_t pid = getpid();
1232 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1233 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1234 current_socketpath);
1235 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1236 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1237 strlen(current_configpath), current_configpath);
1238 update_shmlog_atom();
1242 * Set warp_to coordinates. This will trigger on the next call to
1246 void x_set_warp_to(Rect *rect) {
1247 if (config.mouse_warping != POINTER_WARPING_NONE)
1252 * Applies the given mask to the event mask of every i3 window decoration X11
1253 * window. This is useful to disable EnterNotify while resizing so that focus
1257 void x_mask_event_mask(uint32_t mask) {
1258 uint32_t values[] = {FRAME_EVENT_MASK & mask};
1261 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1263 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);