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 xcb_visualid_t visual = XCB_COPY_FROM_PARENT;
105 xcb_colormap_t win_colormap = XCB_NONE;
106 if (depth != root_depth && depth != XCB_COPY_FROM_PARENT) {
107 /* For custom visuals, we need to create a colormap before creating
108 * this window. It will be freed directly after creating the window. */
109 visual = get_visualid_by_depth(depth);
110 win_colormap = xcb_generate_id(conn);
111 xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
113 /* We explicitly set a background color and border color (even though we
114 * don’t even have a border) because the X11 server requires us to when
115 * using 32 bit color depths, see
116 * http://stackoverflow.com/questions/3645632 */
117 mask |= XCB_CW_BACK_PIXEL;
118 values[0] = root_screen->black_pixel;
120 mask |= XCB_CW_BORDER_PIXEL;
121 values[1] = root_screen->black_pixel;
123 /* our own frames should not be managed */
124 mask |= XCB_CW_OVERRIDE_REDIRECT;
127 /* see include/xcb.h for the FRAME_EVENT_MASK */
128 mask |= XCB_CW_EVENT_MASK;
129 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
131 mask |= XCB_CW_COLORMAP;
132 values[4] = win_colormap;
134 /* our own frames should not be managed */
135 mask = XCB_CW_OVERRIDE_REDIRECT;
138 /* see include/xcb.h for the FRAME_EVENT_MASK */
139 mask |= XCB_CW_EVENT_MASK;
140 values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
142 mask |= XCB_CW_COLORMAP;
143 values[2] = colormap;
146 Rect dims = {-15, -15, 10, 10};
147 con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
148 xcb_change_property(conn,
149 XCB_PROP_MODE_REPLACE,
154 (strlen("i3-frame") + 1) * 2,
155 "i3-frame\0i3-frame\0");
157 if (win_colormap != XCB_NONE)
158 xcb_free_colormap(conn, win_colormap);
160 struct con_state *state = scalloc(1, sizeof(struct con_state));
161 state->id = con->frame;
162 state->mapped = false;
163 state->initial = true;
164 DLOG("Adding window 0x%08x to lists\n", state->id);
165 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
166 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
167 TAILQ_INSERT_TAIL(&initial_mapping_head, state, initial_mapping_order);
168 DLOG("adding new state for window id 0x%08x\n", state->id);
172 * Re-initializes the associated X window state for this container. You have
173 * to call this when you assign a client to an empty container to ensure that
174 * its state gets updated correctly.
177 void x_reinit(Con *con) {
178 struct con_state *state;
180 if ((state = state_for_frame(con->frame)) == NULL) {
181 ELOG("window state not found\n");
185 DLOG("resetting state %p to initial\n", state);
186 state->initial = true;
187 state->child_mapped = false;
189 memset(&(state->window_rect), 0, sizeof(Rect));
193 * Reparents the child window of the given container (necessary for sticky
194 * containers). The reparenting happens in the next call of x_push_changes().
197 void x_reparent_child(Con *con, Con *old) {
198 struct con_state *state;
199 if ((state = state_for_frame(con->frame)) == NULL) {
200 ELOG("window state for con not found\n");
204 state->need_reparent = true;
205 state->old_frame = old->frame;
209 * Moves a child window from Container src to Container dest.
212 void x_move_win(Con *src, Con *dest) {
213 struct con_state *state_src, *state_dest;
215 if ((state_src = state_for_frame(src->frame)) == NULL) {
216 ELOG("window state for src not found\n");
220 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
221 ELOG("window state for dest not found\n");
225 state_dest->con = state_src->con;
226 state_src->con = NULL;
228 Rect zero = {0, 0, 0, 0};
229 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
230 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
231 DLOG("COPYING RECT\n");
236 * Kills the window decoration associated with the given container.
239 void x_con_kill(Con *con) {
242 xcb_destroy_window(conn, con->frame);
243 xcb_free_pixmap(conn, con->pixmap);
244 xcb_free_gc(conn, con->pm_gc);
245 state = state_for_frame(con->frame);
246 CIRCLEQ_REMOVE(&state_head, state, state);
247 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
248 TAILQ_REMOVE(&initial_mapping_head, state, initial_mapping_order);
252 /* Invalidate focused_id to correctly focus new windows with the same ID */
253 focused_id = last_focused = XCB_NONE;
257 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
260 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
261 xcb_get_property_cookie_t cookie;
262 xcb_icccm_get_wm_protocols_reply_t protocols;
265 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
266 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
269 /* Check if the client’s protocols have the requested atom set */
270 for (uint32_t i = 0; i < protocols.atoms_len; i++)
271 if (protocols.atoms[i] == atom)
274 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
280 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
283 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
284 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
285 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
286 if (kill_window == KILL_WINDOW) {
287 LOG("Killing specific window 0x%08x\n", window);
288 xcb_destroy_window(conn, window);
290 LOG("Killing the X11 client which owns window 0x%08x\n", window);
291 xcb_kill_client(conn, window);
296 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
297 * In order to properly initialize these bytes, we allocate 32 bytes even
298 * though we only need less for an xcb_configure_notify_event_t */
299 void *event = scalloc(32, 1);
300 xcb_client_message_event_t *ev = event;
302 ev->response_type = XCB_CLIENT_MESSAGE;
304 ev->type = A_WM_PROTOCOLS;
306 ev->data.data32[0] = A_WM_DELETE_WINDOW;
307 ev->data.data32[1] = XCB_CURRENT_TIME;
309 LOG("Sending WM_DELETE to the client\n");
310 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
316 * Draws the decoration of the given container onto its parent.
319 void x_draw_decoration(Con *con) {
320 Con *parent = con->parent;
321 bool leaf = con_is_leaf(con);
323 /* This code needs to run for:
325 * • non-leaf containers which are in a stacked/tabbed container
327 * It does not need to run for:
328 * • direct children of outputs or dockareas
329 * • floating containers (they don’t have a decoration)
332 parent->layout != L_STACKED &&
333 parent->layout != L_TABBED) ||
334 parent->type == CT_OUTPUT ||
335 parent->type == CT_DOCKAREA ||
336 con->type == CT_FLOATING_CON)
339 /* Skip containers whose height is 0 (for example empty dockareas) */
340 if (con->rect.height == 0)
343 /* Skip containers whose pixmap has not yet been created (can happen when
344 * decoration rendering happens recursively for a window for which
345 * x_push_node() was not yet called) */
346 if (leaf && con->pixmap == XCB_NONE)
349 /* 1: build deco_params and compare with cache */
350 struct deco_render_params *p = scalloc(1, sizeof(struct deco_render_params));
352 /* find out which colors to use */
354 p->color = &config.client.urgent;
355 else if (con == focused || con_inside_focused(con))
356 p->color = &config.client.focused;
357 else if (con == TAILQ_FIRST(&(parent->focus_head)))
358 p->color = &config.client.focused_inactive;
360 p->color = &config.client.unfocused;
362 p->border_style = con_border_style(con);
364 Rect *r = &(con->rect);
365 Rect *w = &(con->window_rect);
366 p->con_rect = (struct width_height){r->width, r->height};
367 p->con_window_rect = (struct width_height){w->width, w->height};
368 p->con_deco_rect = con->deco_rect;
369 p->background = config.client.background;
370 p->con_is_leaf = con_is_leaf(con);
371 p->parent_layout = con->parent->layout;
373 if (con->deco_render_params != NULL &&
374 (con->window == NULL || !con->window->name_x_changed) &&
375 !parent->pixmap_recreated &&
376 !con->pixmap_recreated &&
377 !con->mark_changed &&
378 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
384 while ((next = TAILQ_NEXT(next, nodes))) {
385 FREE(next->deco_render_params);
388 FREE(con->deco_render_params);
389 con->deco_render_params = p;
391 if (con->window != NULL && con->window->name_x_changed)
392 con->window->name_x_changed = false;
394 parent->pixmap_recreated = false;
395 con->pixmap_recreated = false;
396 con->mark_changed = false;
398 /* 2: draw the client.background, but only for the parts around the client_rect */
399 if (con->window != NULL) {
400 xcb_rectangle_t background[] = {
402 {0, 0, r->width, w->y},
404 {0, (w->y + w->height), r->width, r->height - (w->y + w->height)},
406 {0, 0, w->x, r->height},
408 {w->x + w->width, 0, r->width - (w->x + w->width), r->height}};
410 for (int i = 0; i < 4; i++)
411 DLOG("rect is (%d, %d) with %d x %d\n",
419 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){config.client.background});
420 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
423 /* 3: draw a rectangle in border color around the client */
424 if (p->border_style != BS_NONE && p->con_is_leaf) {
425 /* We might hide some borders adjacent to the screen-edge */
426 adjacent_t borders_to_hide = ADJ_NONE;
427 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
429 Rect br = con_border_style_rect(con);
431 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
432 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
433 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);
436 /* These rectangles represents the border around the child window
437 * (left, bottom and right part). We don’t just fill the whole
438 * rectangle because some childs are not freely resizable and we want
439 * their background color to "shine through". */
440 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
441 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
442 xcb_rectangle_t leftline = {0, 0, br.x, r->height};
443 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
445 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
446 xcb_rectangle_t rightline = {r->width + (br.width + br.x), 0, -(br.width + br.x), r->height};
447 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
449 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
450 xcb_rectangle_t bottomline = {br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y)};
451 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
453 /* 1pixel border needs an additional line at the top */
454 if (p->border_style == BS_PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
455 xcb_rectangle_t topline = {br.x, 0, r->width + br.width, br.y};
456 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
459 /* Highlight the side of the border at which the next window will be
460 * opened if we are rendering a single window within a split container
461 * (which is undistinguishable from a single window outside a split
462 * container otherwise. */
463 if (TAILQ_NEXT(con, nodes) == NULL &&
464 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
465 con->parent->type != CT_FLOATING_CON) {
466 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->indicator});
467 if (p->parent_layout == L_SPLITH)
468 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
469 {r->width + (br.width + br.x), br.y, -(br.width + br.x), r->height + br.height}});
470 else if (p->parent_layout == L_SPLITV)
471 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
472 {br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y)}});
476 /* if this is a borderless/1pixel window, we don’t need to render the
478 if (p->border_style != BS_NORMAL)
481 /* 4: paint the bar */
482 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
483 xcb_rectangle_t drect = {con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height};
484 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
486 /* 5: draw two unconnected horizontal lines in border color */
487 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
488 Rect *dr = &(con->deco_rect);
489 adjacent_t borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
490 int deco_diff_l = borders_to_hide & ADJ_LEFT_SCREEN_EDGE ? 0 : con->current_border_width;
491 int deco_diff_r = borders_to_hide & ADJ_RIGHT_SCREEN_EDGE ? 0 : con->current_border_width;
492 if (parent->layout == L_TABBED ||
493 (parent->layout == L_STACKED && TAILQ_NEXT(con, nodes) != NULL)) {
497 xcb_segment_t segments[] = {
499 dr->x + dr->width - 1, dr->y},
500 {dr->x + deco_diff_l, dr->y + dr->height - 1,
501 dr->x - deco_diff_r + dr->width - 1, dr->y + dr->height - 1}};
502 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
504 /* 6: draw the title */
505 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
506 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
508 struct Window *win = con->window;
510 /* we have a split container which gets a representation
511 * of its children as title
514 char *tree = con_get_tree_representation(con);
515 sasprintf(&title, "i3: %s", tree);
518 draw_text_ascii(title,
519 parent->pixmap, parent->pm_gc,
520 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
521 con->deco_rect.width - 2);
527 if (win->name == NULL)
530 int indent_level = 0,
532 Con *il_parent = parent;
533 if (il_parent->layout != L_STACKED) {
535 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
536 if (il_parent->layout == L_STACKED)
538 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
540 il_parent = il_parent->parent;
544 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
545 int indent_px = (indent_level * 5) * indent_mult;
548 if (config.show_marks && con->mark != NULL && (con->mark)[0] != '_') {
549 char *formatted_mark;
550 sasprintf(&formatted_mark, "[%s]", con->mark);
551 i3String *mark = i3string_from_utf8(formatted_mark);
552 FREE(formatted_mark);
553 mark_width = predict_text_width(mark);
555 draw_text(mark, parent->pixmap, parent->pm_gc,
556 con->deco_rect.x + con->deco_rect.width - mark_width - logical_px(2),
557 con->deco_rect.y + text_offset_y, mark_width);
562 i3String *title = win->title_format == NULL ? win->name : window_parse_title_format(win);
564 parent->pixmap, parent->pm_gc,
565 con->deco_rect.x + logical_px(2) + indent_px, con->deco_rect.y + text_offset_y,
566 con->deco_rect.width - logical_px(2) - indent_px - mark_width - logical_px(2));
567 if (win->title_format != NULL)
568 I3STRING_FREE(title);
571 /* Since we don’t clip the text at all, it might in some cases be painted
572 * on the border pixels on the right side of a window. Therefore, we draw
573 * the right border again after rendering the text (and the unconnected
574 * lines in border color). */
576 /* Draw a 1px separator line before and after every tab, so that tabs can
577 * be easily distinguished. */
578 if (parent->layout == L_TABBED) {
579 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
581 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
583 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 6,
585 {dr->x + dr->width, dr->y},
586 {dr->x + dr->width, dr->y + dr->height},
587 {dr->x + dr->width - 1, dr->y},
588 {dr->x + dr->width - 1, dr->y + dr->height},
589 {dr->x, dr->y + dr->height},
593 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
594 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
597 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
601 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
602 * because x_push_node uses focus order to recurse (see the comment above)
603 * while drawing the decoration needs to happen in the actual order.
606 void x_deco_recurse(Con *con) {
608 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
609 TAILQ_EMPTY(&(con->floating_head));
610 con_state *state = state_for_frame(con->frame);
613 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
614 x_deco_recurse(current);
616 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
617 x_deco_recurse(current);
620 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
623 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
624 (!leaf || con->mapped))
625 x_draw_decoration(con);
629 * Sets or removes the _NET_WM_STATE_HIDDEN property on con if necessary.
632 static void set_hidden_state(Con *con) {
633 if (con->window == NULL) {
637 con_state *state = state_for_frame(con->frame);
638 bool should_be_hidden = con_is_hidden(con);
639 if (should_be_hidden == state->is_hidden)
642 if (should_be_hidden) {
643 DLOG("setting _NET_WM_STATE_HIDDEN for con = %p\n", con);
644 xcb_add_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
646 DLOG("removing _NET_WM_STATE_HIDDEN for con = %p\n", con);
647 xcb_remove_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
650 state->is_hidden = should_be_hidden;
654 * This function pushes the properties of each node of the layout tree to
655 * X11 if they have changed (like the map state, position of the window, …).
656 * It recursively traverses all children of the given node.
659 void x_push_node(Con *con) {
662 Rect rect = con->rect;
664 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
665 state = state_for_frame(con->frame);
667 if (state->name != NULL) {
668 DLOG("pushing name %s for con %p\n", state->name, con);
670 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
671 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
675 if (con->window == NULL) {
676 /* Calculate the height of all window decorations which will be drawn on to
678 uint32_t max_y = 0, max_height = 0;
679 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
680 Rect *dr = &(current->deco_rect);
681 if (dr->y >= max_y && dr->height >= max_height) {
683 max_height = dr->height;
686 rect.height = max_y + max_height;
687 if (rect.height == 0)
691 /* reparent the child window (when the window was moved due to a sticky
693 if (state->need_reparent && con->window != NULL) {
694 DLOG("Reparenting child window\n");
696 /* Temporarily set the event masks to XCB_NONE so that we won’t get
697 * UnmapNotify events (otherwise the handler would close the container).
698 * These events are generated automatically when reparenting. */
699 uint32_t values[] = {XCB_NONE};
700 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
701 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
703 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
705 values[0] = FRAME_EVENT_MASK;
706 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
707 values[0] = CHILD_EVENT_MASK;
708 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
710 state->old_frame = XCB_NONE;
711 state->need_reparent = false;
714 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
715 con, con->window->id, con->ignore_unmap);
718 /* The pixmap of a borderless leaf container will not be used except
719 * for the titlebar in a stack or tabs (issue #1013). */
720 bool is_pixmap_needed = (con->border_style != BS_NONE ||
722 con->parent->layout == L_STACKED ||
723 con->parent->layout == L_TABBED);
725 bool fake_notify = false;
726 /* Set new position if rect changed (and if height > 0) or if the pixmap
727 * needs to be recreated */
728 if ((is_pixmap_needed && con->pixmap == XCB_NONE) || (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
730 /* We first create the new pixmap, then render to it, set it as the
731 * background and only afterwards change the window size. This reduces
734 /* As the pixmap only depends on the size and not on the position, it
735 * is enough to check if width/height have changed. Also, we don’t
736 * create a pixmap at all when the window is actually not visible
737 * (height == 0) or when it is not needed. */
738 bool has_rect_changed = (state->rect.width != rect.width || state->rect.height != rect.height);
740 /* Check if the container has an unneeded pixmap left over from
741 * previously having a border or titlebar. */
742 if (!is_pixmap_needed && con->pixmap != XCB_NONE) {
743 xcb_free_pixmap(conn, con->pixmap);
744 con->pixmap = XCB_NONE;
747 if (is_pixmap_needed && (has_rect_changed || con->pixmap == XCB_NONE)) {
748 if (con->pixmap == 0) {
749 con->pixmap = xcb_generate_id(conn);
750 con->pm_gc = xcb_generate_id(conn);
752 xcb_free_pixmap(conn, con->pixmap);
753 xcb_free_gc(conn, con->pm_gc);
756 uint16_t win_depth = root_depth;
758 win_depth = con->window->depth;
760 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
762 /* For the graphics context, we disable GraphicsExposure events.
763 * Those will be sent when a CopyArea request cannot be fulfilled
764 * properly due to parts of the source being unmapped or otherwise
765 * unavailable. Since we always copy from pixmaps to windows, this
766 * is not a concern for us. */
767 uint32_t values[] = {0};
768 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
770 con->pixmap_recreated = true;
772 /* Don’t render the decoration for windows inside a stack which are
773 * not visible right now */
775 con->parent->layout != L_STACKED ||
776 TAILQ_FIRST(&(con->parent->focus_head)) == con)
777 /* Render the decoration now to make the correct decoration visible
778 * from the very first moment. Later calls will be cached, so this
779 * doesn’t hurt performance. */
783 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
784 /* flush to ensure that the following commands are sent in a single
785 * buffer and will be processed directly afterwards (the contents of a
786 * window get lost when resizing it, therefore we want to provide it as
787 * fast as possible) */
789 xcb_set_window_rect(conn, con->frame, rect);
790 if (con->pixmap != XCB_NONE)
791 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
794 memcpy(&(state->rect), &rect, sizeof(Rect));
798 /* dito, but for child windows */
799 if (con->window != NULL &&
800 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
801 DLOG("setting window rect (%d, %d, %d, %d)\n",
802 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
803 xcb_set_window_rect(conn, con->window->id, con->window_rect);
804 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
808 /* Map if map state changed, also ensure that the child window
809 * is changed if we are mapped and there is a new, unmapped child window.
810 * Unmaps are handled in x_push_node_unmaps(). */
811 if ((state->mapped != con->mapped || (con->window != NULL && !state->child_mapped)) &&
813 xcb_void_cookie_t cookie;
815 if (con->window != NULL) {
816 /* Set WM_STATE_NORMAL because GTK applications don’t want to
817 * drag & drop if we don’t. Also, xprop(1) needs it. */
818 long data[] = {XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE};
819 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
820 A_WM_STATE, A_WM_STATE, 32, 2, data);
824 if (!state->child_mapped && con->window != NULL) {
825 cookie = xcb_map_window(conn, con->window->id);
827 /* We are interested in EnterNotifys as soon as the window is
829 values[0] = CHILD_EVENT_MASK;
830 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
831 DLOG("mapping child window (serial %d)\n", cookie.sequence);
832 state->child_mapped = true;
835 cookie = xcb_map_window(conn, con->frame);
837 values[0] = FRAME_EVENT_MASK;
838 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
840 /* copy the pixmap contents to the frame window immediately after mapping */
841 if (con->pixmap != XCB_NONE)
842 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
845 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
846 state->mapped = con->mapped;
849 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
852 DLOG("Sending fake configure notify\n");
853 fake_absolute_configure_notify(con);
856 set_hidden_state(con);
858 /* Handle all children and floating windows of this node. We recurse
859 * in focus order to display the focused client in a stack first when
860 * switching workspaces (reduces flickering). */
861 TAILQ_FOREACH(current, &(con->focus_head), focused)
862 x_push_node(current);
866 * Same idea as in x_push_node(), but this function only unmaps windows. It is
867 * necessary to split this up to handle new fullscreen clients properly: The
868 * new window needs to be mapped and focus needs to be set *before* the
869 * underlying windows are unmapped. Otherwise, focus will revert to the
870 * PointerRoot and will then be set to the new window, generating unnecessary
871 * FocusIn/FocusOut events.
874 static void x_push_node_unmaps(Con *con) {
878 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
879 state = state_for_frame(con->frame);
881 /* map/unmap if map state changed, also ensure that the child window
882 * is changed if we are mapped *and* in initial state (meaning the
883 * container was empty before, but now got a child) */
884 if (state->unmap_now) {
885 xcb_void_cookie_t cookie;
886 if (con->window != NULL) {
887 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
888 long data[] = {XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE};
889 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
890 A_WM_STATE, A_WM_STATE, 32, 2, data);
893 cookie = xcb_unmap_window(conn, con->frame);
894 DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
895 /* we need to increase ignore_unmap for this container (if it
896 * contains a window) and for every window "under" this one which
897 * contains a window */
898 if (con->window != NULL) {
900 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
902 state->mapped = con->mapped;
905 /* handle all children and floating windows of this node */
906 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
907 x_push_node_unmaps(current);
909 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
910 x_push_node_unmaps(current);
914 * Returns true if the given container is currently attached to its parent.
916 * TODO: Remove once #1185 has been fixed
918 static bool is_con_attached(Con *con) {
919 if (con->parent == NULL)
923 TAILQ_FOREACH(current, &(con->parent->nodes_head), nodes) {
932 * Pushes all changes (state of each node, see x_push_node() and the window
935 * NOTE: We need to push the stack first so that the windows have the correct
936 * stacking order. This is relevant for workspace switching where we map the
937 * windows because mapping may generate EnterNotify events. When they are
938 * generated in the wrong order, this will cause focus problems when switching
942 void x_push_changes(Con *con) {
944 xcb_query_pointer_cookie_t pointercookie;
946 /* If we need to warp later, we request the pointer position as soon as possible */
948 pointercookie = xcb_query_pointer(conn, root);
951 DLOG("-- PUSHING WINDOW STACK --\n");
952 //DLOG("Disabling EnterNotify\n");
953 uint32_t values[1] = {XCB_NONE};
954 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
956 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
958 //DLOG("Done, EnterNotify disabled\n");
959 bool order_changed = false;
960 bool stacking_changed = false;
962 /* count first, necessary to (re)allocate memory for the bottom-to-top
963 * stack afterwards */
965 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
966 if (con_has_managed_window(state->con))
969 /* The bottom-to-top window stack of all windows which are managed by i3.
970 * Used for x_get_window_stack(). */
971 static xcb_window_t *client_list_windows = NULL;
972 static int client_list_count = 0;
974 if (cnt != client_list_count) {
975 client_list_windows = srealloc(client_list_windows, sizeof(xcb_window_t) * cnt);
976 client_list_count = cnt;
979 xcb_window_t *walk = client_list_windows;
981 /* X11 correctly represents the stack if we push it from bottom to top */
982 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
983 if (con_has_managed_window(state->con))
984 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
986 //DLOG("stack: 0x%08x\n", state->id);
987 con_state *prev = CIRCLEQ_PREV(state, state);
988 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
989 if (prev != old_prev)
990 order_changed = true;
991 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
992 stacking_changed = true;
993 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
995 mask |= XCB_CONFIG_WINDOW_SIBLING;
996 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
997 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
999 xcb_configure_window(conn, prev->id, mask, values);
1001 state->initial = false;
1004 /* If we re-stacked something (or a new window appeared), we need to update
1005 * the _NET_CLIENT_LIST and _NET_CLIENT_LIST_STACKING hints */
1006 if (stacking_changed) {
1007 DLOG("Client list changed (%i clients)\n", cnt);
1008 ewmh_update_client_list_stacking(client_list_windows, client_list_count);
1010 walk = client_list_windows;
1012 /* reorder by initial mapping */
1013 TAILQ_FOREACH(state, &initial_mapping_head, initial_mapping_order) {
1014 if (con_has_managed_window(state->con))
1015 *walk++ = state->con->window->id;
1018 ewmh_update_client_list(client_list_windows, client_list_count);
1021 DLOG("PUSHING CHANGES\n");
1025 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
1026 if (!pointerreply) {
1027 ELOG("Could not query pointer position, not warping pointer\n");
1029 int mid_x = warp_to->x + (warp_to->width / 2);
1030 int mid_y = warp_to->y + (warp_to->height / 2);
1032 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
1033 Output *target = get_output_containing(mid_x, mid_y);
1034 if (current != target) {
1035 /* Ignore MotionNotify events generated by warping */
1036 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT});
1037 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
1038 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ROOT_EVENT_MASK});
1044 //DLOG("Re-enabling EnterNotify\n");
1045 values[0] = FRAME_EVENT_MASK;
1046 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1048 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1050 //DLOG("Done, EnterNotify re-enabled\n");
1052 x_deco_recurse(con);
1054 xcb_window_t to_focus = focused->frame;
1055 if (focused->window != NULL)
1056 to_focus = focused->window->id;
1058 if (focused_id != to_focus) {
1059 if (!focused->mapped) {
1060 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
1061 /* Invalidate focused_id to correctly focus new windows with the same ID */
1062 focused_id = XCB_NONE;
1064 if (focused->window != NULL &&
1065 focused->window->needs_take_focus &&
1066 focused->window->doesnt_accept_focus) {
1067 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
1068 to_focus, focused, focused->name);
1069 send_take_focus(to_focus, last_timestamp);
1071 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1073 if (to_focus != last_focused && is_con_attached(focused))
1074 ipc_send_window_event("focus", focused);
1076 DLOG("Updating focus (focused: %p / %s) to X11 window 0x%08x\n", focused, focused->name, to_focus);
1077 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
1078 * no focus change events for our own focus changes. We only want
1079 * these generated by the clients. */
1080 if (focused->window != NULL) {
1081 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
1082 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1084 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
1085 if (focused->window != NULL) {
1086 values[0] = CHILD_EVENT_MASK;
1087 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1090 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1092 if (to_focus != XCB_NONE && to_focus != last_focused && focused->window != NULL && is_con_attached(focused))
1093 ipc_send_window_event("focus", focused);
1096 focused_id = last_focused = to_focus;
1100 if (focused_id == XCB_NONE) {
1101 /* If we still have no window to focus, we focus the EWMH window instead. We use this rather than the
1102 * root window in order to avoid an X11 fallback mechanism causing a ghosting effect (see #1378). */
1103 DLOG("Still no window focused, better set focus to the EWMH support window (%d)\n", ewmh_window);
1104 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, ewmh_window, XCB_CURRENT_TIME);
1105 ewmh_update_active_window(XCB_WINDOW_NONE);
1106 focused_id = ewmh_window;
1110 DLOG("ENDING CHANGES\n");
1112 /* Disable EnterWindow events for windows which will be unmapped in
1113 * x_push_node_unmaps() now. Unmapping windows happens when switching
1114 * workspaces. We want to avoid getting EnterNotifies during that phase
1115 * because they would screw up our focus. One of these cases is having a
1116 * stack with two windows. If the first window is focused and gets
1117 * unmapped, the second one appears under the cursor and therefore gets an
1118 * EnterNotify event. */
1119 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
1120 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1121 if (!state->unmap_now)
1123 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1126 /* Push all pending unmaps */
1127 x_push_node_unmaps(con);
1129 /* save the current stack as old stack */
1130 CIRCLEQ_FOREACH(state, &state_head, state) {
1131 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
1132 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
1134 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
1135 // DLOG("old stack: 0x%08x\n", state->id);
1142 * Raises the specified container in the internal stack of X windows. The
1143 * next call to x_push_changes() will make the change visible in X11.
1146 void x_raise_con(Con *con) {
1148 state = state_for_frame(con->frame);
1149 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1151 CIRCLEQ_REMOVE(&state_head, state, state);
1152 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1156 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1157 * of the given name. Used for properly tagging the windows for easily spotting
1158 * i3 windows in xwininfo -root -all.
1161 void x_set_name(Con *con, const char *name) {
1162 struct con_state *state;
1164 if ((state = state_for_frame(con->frame)) == NULL) {
1165 ELOG("window state not found\n");
1170 state->name = sstrdup(name);
1174 * Set up the I3_SHMLOG_PATH atom.
1177 void update_shmlog_atom() {
1178 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
1179 A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1180 strlen(shmlogname), shmlogname);
1184 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1187 void x_set_i3_atoms(void) {
1188 pid_t pid = getpid();
1189 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1190 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1191 current_socketpath);
1192 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1193 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1194 strlen(current_configpath), current_configpath);
1195 update_shmlog_atom();
1199 * Set warp_to coordinates. This will trigger on the next call to
1203 void x_set_warp_to(Rect *rect) {
1204 if (config.mouse_warping != POINTER_WARPING_NONE)
1209 * Applies the given mask to the event mask of every i3 window decoration X11
1210 * window. This is useful to disable EnterNotify while resizing so that focus
1214 void x_mask_event_mask(uint32_t mask) {
1215 uint32_t values[] = {FRAME_EVENT_MASK & mask};
1218 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1220 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);