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 && !TAILQ_EMPTY(&(con->marks_head))) {
549 char *formatted_mark = sstrdup("");
550 bool had_visible_mark = false;
553 TAILQ_FOREACH(mark, &(con->marks_head), marks) {
554 if (mark->name[0] == '_')
556 had_visible_mark = true;
559 sasprintf(&buf, "%s[%s]", formatted_mark, mark->name);
560 free(formatted_mark);
561 formatted_mark = buf;
564 if (had_visible_mark) {
565 i3String *mark = i3string_from_utf8(formatted_mark);
566 mark_width = predict_text_width(mark);
568 draw_text(mark, parent->pixmap, parent->pm_gc, NULL,
569 con->deco_rect.x + con->deco_rect.width - mark_width - logical_px(2),
570 con->deco_rect.y + text_offset_y, mark_width);
575 FREE(formatted_mark);
578 i3String *title = win->title_format == NULL ? win->name : window_parse_title_format(win);
580 parent->pixmap, parent->pm_gc, NULL,
581 con->deco_rect.x + logical_px(2) + indent_px, con->deco_rect.y + text_offset_y,
582 con->deco_rect.width - logical_px(2) - indent_px - mark_width - logical_px(2));
583 if (win->title_format != NULL)
584 I3STRING_FREE(title);
587 /* Since we don’t clip the text at all, it might in some cases be painted
588 * on the border pixels on the right side of a window. Therefore, we draw
589 * the right border again after rendering the text (and the unconnected
590 * lines in border color). */
592 /* Draw a 1px separator line before and after every tab, so that tabs can
593 * be easily distinguished. */
594 if (parent->layout == L_TABBED) {
595 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
597 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
599 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 6,
601 {dr->x + dr->width, dr->y},
602 {dr->x + dr->width, dr->y + dr->height},
603 {dr->x + dr->width - 1, dr->y},
604 {dr->x + dr->width - 1, dr->y + dr->height},
605 {dr->x, dr->y + dr->height},
609 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
610 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
613 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
617 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
618 * because x_push_node uses focus order to recurse (see the comment above)
619 * while drawing the decoration needs to happen in the actual order.
622 void x_deco_recurse(Con *con) {
624 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
625 TAILQ_EMPTY(&(con->floating_head));
626 con_state *state = state_for_frame(con->frame);
629 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
630 x_deco_recurse(current);
632 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
633 x_deco_recurse(current);
636 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
639 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
640 (!leaf || con->mapped))
641 x_draw_decoration(con);
645 * Sets or removes the _NET_WM_STATE_HIDDEN property on con if necessary.
648 static void set_hidden_state(Con *con) {
649 if (con->window == NULL) {
653 con_state *state = state_for_frame(con->frame);
654 bool should_be_hidden = con_is_hidden(con);
655 if (should_be_hidden == state->is_hidden)
658 if (should_be_hidden) {
659 DLOG("setting _NET_WM_STATE_HIDDEN for con = %p\n", con);
660 xcb_add_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
662 DLOG("removing _NET_WM_STATE_HIDDEN for con = %p\n", con);
663 xcb_remove_property_atom(conn, con->window->id, A__NET_WM_STATE, A__NET_WM_STATE_HIDDEN);
666 state->is_hidden = should_be_hidden;
670 * This function pushes the properties of each node of the layout tree to
671 * X11 if they have changed (like the map state, position of the window, …).
672 * It recursively traverses all children of the given node.
675 void x_push_node(Con *con) {
678 Rect rect = con->rect;
680 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
681 state = state_for_frame(con->frame);
683 if (state->name != NULL) {
684 DLOG("pushing name %s for con %p\n", state->name, con);
686 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
687 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
691 if (con->window == NULL) {
692 /* Calculate the height of all window decorations which will be drawn on to
694 uint32_t max_y = 0, max_height = 0;
695 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
696 Rect *dr = &(current->deco_rect);
697 if (dr->y >= max_y && dr->height >= max_height) {
699 max_height = dr->height;
702 rect.height = max_y + max_height;
703 if (rect.height == 0)
707 /* reparent the child window (when the window was moved due to a sticky
709 if (state->need_reparent && con->window != NULL) {
710 DLOG("Reparenting child window\n");
712 /* Temporarily set the event masks to XCB_NONE so that we won’t get
713 * UnmapNotify events (otherwise the handler would close the container).
714 * These events are generated automatically when reparenting. */
715 uint32_t values[] = {XCB_NONE};
716 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
717 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
719 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
721 values[0] = FRAME_EVENT_MASK;
722 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
723 values[0] = CHILD_EVENT_MASK;
724 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
726 state->old_frame = XCB_NONE;
727 state->need_reparent = false;
730 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
731 con, con->window->id, con->ignore_unmap);
734 /* The pixmap of a borderless leaf container will not be used except
735 * for the titlebar in a stack or tabs (issue #1013). */
736 bool is_pixmap_needed = (con->border_style != BS_NONE ||
738 con->parent->layout == L_STACKED ||
739 con->parent->layout == L_TABBED);
741 bool fake_notify = false;
742 /* Set new position if rect changed (and if height > 0) or if the pixmap
743 * needs to be recreated */
744 if ((is_pixmap_needed && con->pixmap == XCB_NONE) || (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
746 /* We first create the new pixmap, then render to it, set it as the
747 * background and only afterwards change the window size. This reduces
750 /* As the pixmap only depends on the size and not on the position, it
751 * is enough to check if width/height have changed. Also, we don’t
752 * create a pixmap at all when the window is actually not visible
753 * (height == 0) or when it is not needed. */
754 bool has_rect_changed = (state->rect.width != rect.width || state->rect.height != rect.height);
756 /* Check if the container has an unneeded pixmap left over from
757 * previously having a border or titlebar. */
758 if (!is_pixmap_needed && con->pixmap != XCB_NONE) {
759 xcb_free_pixmap(conn, con->pixmap);
760 con->pixmap = XCB_NONE;
763 if (is_pixmap_needed && (has_rect_changed || con->pixmap == XCB_NONE)) {
764 if (con->pixmap == 0) {
765 con->pixmap = xcb_generate_id(conn);
766 con->pm_gc = xcb_generate_id(conn);
768 xcb_free_pixmap(conn, con->pixmap);
769 xcb_free_gc(conn, con->pm_gc);
772 uint16_t win_depth = root_depth;
774 win_depth = con->window->depth;
776 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
778 /* For the graphics context, we disable GraphicsExposure events.
779 * Those will be sent when a CopyArea request cannot be fulfilled
780 * properly due to parts of the source being unmapped or otherwise
781 * unavailable. Since we always copy from pixmaps to windows, this
782 * is not a concern for us. */
783 uint32_t values[] = {0};
784 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
786 con->pixmap_recreated = true;
788 /* Don’t render the decoration for windows inside a stack which are
789 * not visible right now */
791 con->parent->layout != L_STACKED ||
792 TAILQ_FIRST(&(con->parent->focus_head)) == con)
793 /* Render the decoration now to make the correct decoration visible
794 * from the very first moment. Later calls will be cached, so this
795 * doesn’t hurt performance. */
799 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
800 /* flush to ensure that the following commands are sent in a single
801 * buffer and will be processed directly afterwards (the contents of a
802 * window get lost when resizing it, therefore we want to provide it as
803 * fast as possible) */
805 xcb_set_window_rect(conn, con->frame, rect);
806 if (con->pixmap != XCB_NONE)
807 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
810 memcpy(&(state->rect), &rect, sizeof(Rect));
814 /* dito, but for child windows */
815 if (con->window != NULL &&
816 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
817 DLOG("setting window rect (%d, %d, %d, %d)\n",
818 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
819 xcb_set_window_rect(conn, con->window->id, con->window_rect);
820 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
824 /* Map if map state changed, also ensure that the child window
825 * is changed if we are mapped and there is a new, unmapped child window.
826 * Unmaps are handled in x_push_node_unmaps(). */
827 if ((state->mapped != con->mapped || (con->window != NULL && !state->child_mapped)) &&
829 xcb_void_cookie_t cookie;
831 if (con->window != NULL) {
832 /* Set WM_STATE_NORMAL because GTK applications don’t want to
833 * drag & drop if we don’t. Also, xprop(1) needs it. */
834 long data[] = {XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE};
835 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
836 A_WM_STATE, A_WM_STATE, 32, 2, data);
840 if (!state->child_mapped && con->window != NULL) {
841 cookie = xcb_map_window(conn, con->window->id);
843 /* We are interested in EnterNotifys as soon as the window is
845 values[0] = CHILD_EVENT_MASK;
846 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
847 DLOG("mapping child window (serial %d)\n", cookie.sequence);
848 state->child_mapped = true;
851 cookie = xcb_map_window(conn, con->frame);
853 values[0] = FRAME_EVENT_MASK;
854 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
856 /* copy the pixmap contents to the frame window immediately after mapping */
857 if (con->pixmap != XCB_NONE)
858 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
861 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
862 state->mapped = con->mapped;
865 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
868 DLOG("Sending fake configure notify\n");
869 fake_absolute_configure_notify(con);
872 set_hidden_state(con);
874 /* Handle all children and floating windows of this node. We recurse
875 * in focus order to display the focused client in a stack first when
876 * switching workspaces (reduces flickering). */
877 TAILQ_FOREACH(current, &(con->focus_head), focused)
878 x_push_node(current);
882 * Same idea as in x_push_node(), but this function only unmaps windows. It is
883 * necessary to split this up to handle new fullscreen clients properly: The
884 * new window needs to be mapped and focus needs to be set *before* the
885 * underlying windows are unmapped. Otherwise, focus will revert to the
886 * PointerRoot and will then be set to the new window, generating unnecessary
887 * FocusIn/FocusOut events.
890 static void x_push_node_unmaps(Con *con) {
894 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
895 state = state_for_frame(con->frame);
897 /* map/unmap if map state changed, also ensure that the child window
898 * is changed if we are mapped *and* in initial state (meaning the
899 * container was empty before, but now got a child) */
900 if (state->unmap_now) {
901 xcb_void_cookie_t cookie;
902 if (con->window != NULL) {
903 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
904 long data[] = {XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE};
905 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
906 A_WM_STATE, A_WM_STATE, 32, 2, data);
909 cookie = xcb_unmap_window(conn, con->frame);
910 DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
911 /* we need to increase ignore_unmap for this container (if it
912 * contains a window) and for every window "under" this one which
913 * contains a window */
914 if (con->window != NULL) {
916 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
918 state->mapped = con->mapped;
921 /* handle all children and floating windows of this node */
922 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
923 x_push_node_unmaps(current);
925 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
926 x_push_node_unmaps(current);
930 * Returns true if the given container is currently attached to its parent.
932 * TODO: Remove once #1185 has been fixed
934 static bool is_con_attached(Con *con) {
935 if (con->parent == NULL)
939 TAILQ_FOREACH(current, &(con->parent->nodes_head), nodes) {
948 * Pushes all changes (state of each node, see x_push_node() and the window
951 * NOTE: We need to push the stack first so that the windows have the correct
952 * stacking order. This is relevant for workspace switching where we map the
953 * windows because mapping may generate EnterNotify events. When they are
954 * generated in the wrong order, this will cause focus problems when switching
958 void x_push_changes(Con *con) {
960 xcb_query_pointer_cookie_t pointercookie;
962 /* If we need to warp later, we request the pointer position as soon as possible */
964 pointercookie = xcb_query_pointer(conn, root);
967 DLOG("-- PUSHING WINDOW STACK --\n");
968 //DLOG("Disabling EnterNotify\n");
969 uint32_t values[1] = {XCB_NONE};
970 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
972 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
974 //DLOG("Done, EnterNotify disabled\n");
975 bool order_changed = false;
976 bool stacking_changed = false;
978 /* count first, necessary to (re)allocate memory for the bottom-to-top
979 * stack afterwards */
981 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
982 if (con_has_managed_window(state->con))
985 /* The bottom-to-top window stack of all windows which are managed by i3.
986 * Used for x_get_window_stack(). */
987 static xcb_window_t *client_list_windows = NULL;
988 static int client_list_count = 0;
990 if (cnt != client_list_count) {
991 client_list_windows = srealloc(client_list_windows, sizeof(xcb_window_t) * cnt);
992 client_list_count = cnt;
995 xcb_window_t *walk = client_list_windows;
997 /* X11 correctly represents the stack if we push it from bottom to top */
998 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
999 if (con_has_managed_window(state->con))
1000 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
1002 //DLOG("stack: 0x%08x\n", state->id);
1003 con_state *prev = CIRCLEQ_PREV(state, state);
1004 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
1005 if (prev != old_prev)
1006 order_changed = true;
1007 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
1008 stacking_changed = true;
1009 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
1011 mask |= XCB_CONFIG_WINDOW_SIBLING;
1012 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
1013 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
1015 xcb_configure_window(conn, prev->id, mask, values);
1017 state->initial = false;
1020 /* If we re-stacked something (or a new window appeared), we need to update
1021 * the _NET_CLIENT_LIST and _NET_CLIENT_LIST_STACKING hints */
1022 if (stacking_changed) {
1023 DLOG("Client list changed (%i clients)\n", cnt);
1024 ewmh_update_client_list_stacking(client_list_windows, client_list_count);
1026 walk = client_list_windows;
1028 /* reorder by initial mapping */
1029 TAILQ_FOREACH(state, &initial_mapping_head, initial_mapping_order) {
1030 if (con_has_managed_window(state->con))
1031 *walk++ = state->con->window->id;
1034 ewmh_update_client_list(client_list_windows, client_list_count);
1037 DLOG("PUSHING CHANGES\n");
1041 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
1042 if (!pointerreply) {
1043 ELOG("Could not query pointer position, not warping pointer\n");
1045 int mid_x = warp_to->x + (warp_to->width / 2);
1046 int mid_y = warp_to->y + (warp_to->height / 2);
1048 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
1049 Output *target = get_output_containing(mid_x, mid_y);
1050 if (current != target) {
1051 /* Ignore MotionNotify events generated by warping */
1052 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT});
1053 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
1054 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ROOT_EVENT_MASK});
1060 //DLOG("Re-enabling EnterNotify\n");
1061 values[0] = FRAME_EVENT_MASK;
1062 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1064 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1066 //DLOG("Done, EnterNotify re-enabled\n");
1068 x_deco_recurse(con);
1070 xcb_window_t to_focus = focused->frame;
1071 if (focused->window != NULL)
1072 to_focus = focused->window->id;
1074 if (focused_id != to_focus) {
1075 if (!focused->mapped) {
1076 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
1077 /* Invalidate focused_id to correctly focus new windows with the same ID */
1078 focused_id = XCB_NONE;
1080 if (focused->window != NULL &&
1081 focused->window->needs_take_focus &&
1082 focused->window->doesnt_accept_focus) {
1083 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
1084 to_focus, focused, focused->name);
1085 send_take_focus(to_focus, last_timestamp);
1087 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1089 if (to_focus != last_focused && is_con_attached(focused))
1090 ipc_send_window_event("focus", focused);
1092 DLOG("Updating focus (focused: %p / %s) to X11 window 0x%08x\n", focused, focused->name, to_focus);
1093 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
1094 * no focus change events for our own focus changes. We only want
1095 * these generated by the clients. */
1096 if (focused->window != NULL) {
1097 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
1098 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1100 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
1101 if (focused->window != NULL) {
1102 values[0] = CHILD_EVENT_MASK;
1103 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1106 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1108 if (to_focus != XCB_NONE && to_focus != last_focused && focused->window != NULL && is_con_attached(focused))
1109 ipc_send_window_event("focus", focused);
1112 focused_id = last_focused = to_focus;
1116 if (focused_id == XCB_NONE) {
1117 /* If we still have no window to focus, we focus the EWMH window instead. We use this rather than the
1118 * root window in order to avoid an X11 fallback mechanism causing a ghosting effect (see #1378). */
1119 DLOG("Still no window focused, better set focus to the EWMH support window (%d)\n", ewmh_window);
1120 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, ewmh_window, XCB_CURRENT_TIME);
1121 ewmh_update_active_window(XCB_WINDOW_NONE);
1122 focused_id = ewmh_window;
1126 DLOG("ENDING CHANGES\n");
1128 /* Disable EnterWindow events for windows which will be unmapped in
1129 * x_push_node_unmaps() now. Unmapping windows happens when switching
1130 * workspaces. We want to avoid getting EnterNotifies during that phase
1131 * because they would screw up our focus. One of these cases is having a
1132 * stack with two windows. If the first window is focused and gets
1133 * unmapped, the second one appears under the cursor and therefore gets an
1134 * EnterNotify event. */
1135 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
1136 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1137 if (!state->unmap_now)
1139 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1142 /* Push all pending unmaps */
1143 x_push_node_unmaps(con);
1145 /* save the current stack as old stack */
1146 CIRCLEQ_FOREACH(state, &state_head, state) {
1147 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
1148 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
1150 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
1151 // DLOG("old stack: 0x%08x\n", state->id);
1158 * Raises the specified container in the internal stack of X windows. The
1159 * next call to x_push_changes() will make the change visible in X11.
1162 void x_raise_con(Con *con) {
1164 state = state_for_frame(con->frame);
1165 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1167 CIRCLEQ_REMOVE(&state_head, state, state);
1168 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1172 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1173 * of the given name. Used for properly tagging the windows for easily spotting
1174 * i3 windows in xwininfo -root -all.
1177 void x_set_name(Con *con, const char *name) {
1178 struct con_state *state;
1180 if ((state = state_for_frame(con->frame)) == NULL) {
1181 ELOG("window state not found\n");
1186 state->name = sstrdup(name);
1190 * Set up the I3_SHMLOG_PATH atom.
1193 void update_shmlog_atom() {
1194 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
1195 A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1196 strlen(shmlogname), shmlogname);
1200 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1203 void x_set_i3_atoms(void) {
1204 pid_t pid = getpid();
1205 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1206 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1207 current_socketpath);
1208 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1209 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1210 strlen(current_configpath), current_configpath);
1211 update_shmlog_atom();
1215 * Set warp_to coordinates. This will trigger on the next call to
1219 void x_set_warp_to(Rect *rect) {
1220 if (config.mouse_warping != POINTER_WARPING_NONE)
1225 * Applies the given mask to the event mask of every i3 window decoration X11
1226 * window. This is useful to disable EnterNotify while resizing so that focus
1230 void x_mask_event_mask(uint32_t mask) {
1231 uint32_t values[] = {FRAME_EVENT_MASK & mask};
1234 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1236 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);