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);
149 if (win_colormap != XCB_NONE)
150 xcb_free_colormap(conn, win_colormap);
152 struct con_state *state = scalloc(1, sizeof(struct con_state));
153 state->id = con->frame;
154 state->mapped = false;
155 state->initial = true;
156 DLOG("Adding window 0x%08x to lists\n", state->id);
157 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
158 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
159 TAILQ_INSERT_TAIL(&initial_mapping_head, state, initial_mapping_order);
160 DLOG("adding new state for window id 0x%08x\n", state->id);
164 * Re-initializes the associated X window state for this container. You have
165 * to call this when you assign a client to an empty container to ensure that
166 * its state gets updated correctly.
169 void x_reinit(Con *con) {
170 struct con_state *state;
172 if ((state = state_for_frame(con->frame)) == NULL) {
173 ELOG("window state not found\n");
177 DLOG("resetting state %p to initial\n", state);
178 state->initial = true;
179 state->child_mapped = false;
181 memset(&(state->window_rect), 0, sizeof(Rect));
185 * Reparents the child window of the given container (necessary for sticky
186 * containers). The reparenting happens in the next call of x_push_changes().
189 void x_reparent_child(Con *con, Con *old) {
190 struct con_state *state;
191 if ((state = state_for_frame(con->frame)) == NULL) {
192 ELOG("window state for con not found\n");
196 state->need_reparent = true;
197 state->old_frame = old->frame;
201 * Moves a child window from Container src to Container dest.
204 void x_move_win(Con *src, Con *dest) {
205 struct con_state *state_src, *state_dest;
207 if ((state_src = state_for_frame(src->frame)) == NULL) {
208 ELOG("window state for src not found\n");
212 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
213 ELOG("window state for dest not found\n");
217 state_dest->con = state_src->con;
218 state_src->con = NULL;
220 Rect zero = {0, 0, 0, 0};
221 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
222 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
223 DLOG("COPYING RECT\n");
228 * Kills the window decoration associated with the given container.
231 void x_con_kill(Con *con) {
234 xcb_destroy_window(conn, con->frame);
235 xcb_free_pixmap(conn, con->pixmap);
236 xcb_free_gc(conn, con->pm_gc);
237 state = state_for_frame(con->frame);
238 CIRCLEQ_REMOVE(&state_head, state, state);
239 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
240 TAILQ_REMOVE(&initial_mapping_head, state, initial_mapping_order);
244 /* Invalidate focused_id to correctly focus new windows with the same ID */
245 focused_id = last_focused = XCB_NONE;
249 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
252 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
253 xcb_get_property_cookie_t cookie;
254 xcb_icccm_get_wm_protocols_reply_t protocols;
257 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
258 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
261 /* Check if the client’s protocols have the requested atom set */
262 for (uint32_t i = 0; i < protocols.atoms_len; i++)
263 if (protocols.atoms[i] == atom)
266 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
272 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
275 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
276 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
277 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
278 if (kill_window == KILL_WINDOW) {
279 LOG("Killing specific window 0x%08x\n", window);
280 xcb_destroy_window(conn, window);
282 LOG("Killing the X11 client which owns window 0x%08x\n", window);
283 xcb_kill_client(conn, window);
288 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
289 * In order to properly initialize these bytes, we allocate 32 bytes even
290 * though we only need less for an xcb_configure_notify_event_t */
291 void *event = scalloc(32, 1);
292 xcb_client_message_event_t *ev = event;
294 ev->response_type = XCB_CLIENT_MESSAGE;
296 ev->type = A_WM_PROTOCOLS;
298 ev->data.data32[0] = A_WM_DELETE_WINDOW;
299 ev->data.data32[1] = XCB_CURRENT_TIME;
301 LOG("Sending WM_DELETE to the client\n");
302 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char *)ev);
308 * Draws the decoration of the given container onto its parent.
311 void x_draw_decoration(Con *con) {
312 Con *parent = con->parent;
313 bool leaf = con_is_leaf(con);
315 /* This code needs to run for:
317 * • non-leaf containers which are in a stacked/tabbed container
319 * It does not need to run for:
320 * • direct children of outputs or dockareas
321 * • floating containers (they don’t have a decoration)
324 parent->layout != L_STACKED &&
325 parent->layout != L_TABBED) ||
326 parent->type == CT_OUTPUT ||
327 parent->type == CT_DOCKAREA ||
328 con->type == CT_FLOATING_CON)
331 /* Skip containers whose height is 0 (for example empty dockareas) */
332 if (con->rect.height == 0)
335 /* Skip containers whose pixmap has not yet been created (can happen when
336 * decoration rendering happens recursively for a window for which
337 * x_push_node() was not yet called) */
338 if (leaf && con->pixmap == XCB_NONE)
341 /* 1: build deco_params and compare with cache */
342 struct deco_render_params *p = scalloc(1, sizeof(struct deco_render_params));
344 /* find out which colors to use */
346 p->color = &config.client.urgent;
347 else if (con == focused || con_inside_focused(con))
348 p->color = &config.client.focused;
349 else if (con == TAILQ_FIRST(&(parent->focus_head)))
350 p->color = &config.client.focused_inactive;
352 p->color = &config.client.unfocused;
354 p->border_style = con_border_style(con);
356 Rect *r = &(con->rect);
357 Rect *w = &(con->window_rect);
358 p->con_rect = (struct width_height){r->width, r->height};
359 p->con_window_rect = (struct width_height){w->width, w->height};
360 p->con_deco_rect = con->deco_rect;
361 p->background = config.client.background;
362 p->con_is_leaf = con_is_leaf(con);
363 p->parent_layout = con->parent->layout;
365 if (con->deco_render_params != NULL &&
366 (con->window == NULL || !con->window->name_x_changed) &&
367 !parent->pixmap_recreated &&
368 !con->pixmap_recreated &&
369 !con->mark_changed &&
370 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
376 while ((next = TAILQ_NEXT(next, nodes))) {
377 FREE(next->deco_render_params);
380 FREE(con->deco_render_params);
381 con->deco_render_params = p;
383 if (con->window != NULL && con->window->name_x_changed)
384 con->window->name_x_changed = false;
386 parent->pixmap_recreated = false;
387 con->pixmap_recreated = false;
388 con->mark_changed = false;
390 /* 2: draw the client.background, but only for the parts around the client_rect */
391 if (con->window != NULL) {
392 xcb_rectangle_t background[] = {
394 {0, 0, r->width, w->y},
396 {0, (w->y + w->height), r->width, r->height - (w->y + w->height)},
398 {0, 0, w->x, r->height},
400 {w->x + w->width, 0, r->width - (w->x + w->width), r->height}};
402 for (int i = 0; i < 4; i++)
403 DLOG("rect is (%d, %d) with %d x %d\n",
411 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){config.client.background});
412 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
415 /* 3: draw a rectangle in border color around the client */
416 if (p->border_style != BS_NONE && p->con_is_leaf) {
417 /* We might hide some borders adjacent to the screen-edge */
418 adjacent_t borders_to_hide = ADJ_NONE;
419 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
421 Rect br = con_border_style_rect(con);
423 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
424 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
425 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);
428 /* These rectangles represents the border around the child window
429 * (left, bottom and right part). We don’t just fill the whole
430 * rectangle because some childs are not freely resizable and we want
431 * their background color to "shine through". */
432 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
433 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
434 xcb_rectangle_t leftline = {0, 0, br.x, r->height};
435 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
437 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
438 xcb_rectangle_t rightline = {r->width + (br.width + br.x), 0, -(br.width + br.x), r->height};
439 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
441 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
442 xcb_rectangle_t bottomline = {br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y)};
443 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
445 /* 1pixel border needs an additional line at the top */
446 if (p->border_style == BS_PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
447 xcb_rectangle_t topline = {br.x, 0, r->width + br.width, br.y};
448 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
451 /* Highlight the side of the border at which the next window will be
452 * opened if we are rendering a single window within a split container
453 * (which is undistinguishable from a single window outside a split
454 * container otherwise. */
455 if (TAILQ_NEXT(con, nodes) == NULL &&
456 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
457 con->parent->type != CT_FLOATING_CON) {
458 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->indicator});
459 if (p->parent_layout == L_SPLITH)
460 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
461 {r->width + (br.width + br.x), br.y, -(br.width + br.x), r->height + br.height}});
462 else if (p->parent_layout == L_SPLITV)
463 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
464 {br.x, r->height + (br.height + br.y), r->width + br.width, -(br.height + br.y)}});
468 /* if this is a borderless/1pixel window, we don’t need to render the
470 if (p->border_style != BS_NORMAL)
473 /* 4: paint the bar */
474 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
475 xcb_rectangle_t drect = {con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height};
476 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
478 /* 5: draw two unconnected horizontal lines in border color */
479 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
480 Rect *dr = &(con->deco_rect);
481 adjacent_t borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
482 int deco_diff_l = borders_to_hide & ADJ_LEFT_SCREEN_EDGE ? 0 : con->current_border_width;
483 int deco_diff_r = borders_to_hide & ADJ_RIGHT_SCREEN_EDGE ? 0 : con->current_border_width;
484 if (parent->layout == L_TABBED ||
485 (parent->layout == L_STACKED && TAILQ_NEXT(con, nodes) != NULL)) {
489 xcb_segment_t segments[] = {
491 dr->x + dr->width - 1, dr->y},
492 {dr->x + deco_diff_l, dr->y + dr->height - 1,
493 dr->x - deco_diff_r + dr->width - 1, dr->y + dr->height - 1}};
494 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
496 /* 6: draw the title */
497 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
498 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
500 struct Window *win = con->window;
502 /* we have a split container which gets a representation
503 * of its children as title
506 char *tree = con_get_tree_representation(con);
507 sasprintf(&title, "i3: %s", tree);
510 draw_text_ascii(title,
511 parent->pixmap, parent->pm_gc,
512 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
513 con->deco_rect.width - 2);
519 if (win->name == NULL)
522 int indent_level = 0,
524 Con *il_parent = parent;
525 if (il_parent->layout != L_STACKED) {
527 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
528 if (il_parent->layout == L_STACKED)
530 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
532 il_parent = il_parent->parent;
536 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
537 int indent_px = (indent_level * 5) * indent_mult;
540 if (config.show_marks && con->mark != NULL && (con->mark)[0] != '_') {
541 char *formatted_mark;
542 sasprintf(&formatted_mark, "[%s]", con->mark);
543 i3String *mark = i3string_from_utf8(formatted_mark);
544 FREE(formatted_mark);
545 mark_width = predict_text_width(mark);
547 draw_text(mark, parent->pixmap, parent->pm_gc,
548 con->deco_rect.x + con->deco_rect.width - mark_width - logical_px(2),
549 con->deco_rect.y + text_offset_y, mark_width);
554 i3String *title = win->title_format == NULL ? win->name : window_parse_title_format(win);
556 parent->pixmap, parent->pm_gc,
557 con->deco_rect.x + logical_px(2) + indent_px, con->deco_rect.y + text_offset_y,
558 con->deco_rect.width - logical_px(2) - indent_px - mark_width - logical_px(2));
559 if (win->title_format != NULL)
560 I3STRING_FREE(title);
563 /* Since we don’t clip the text at all, it might in some cases be painted
564 * on the border pixels on the right side of a window. Therefore, we draw
565 * the right border again after rendering the text (and the unconnected
566 * lines in border color). */
568 /* Draw a 1px separator line before and after every tab, so that tabs can
569 * be easily distinguished. */
570 if (parent->layout == L_TABBED) {
571 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
573 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->background});
575 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 6,
577 {dr->x + dr->width, dr->y},
578 {dr->x + dr->width, dr->y + dr->height},
579 {dr->x + dr->width - 1, dr->y},
580 {dr->x + dr->width - 1, dr->y + dr->height},
581 {dr->x, dr->y + dr->height},
585 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){p->color->border});
586 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
589 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
593 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
594 * because x_push_node uses focus order to recurse (see the comment above)
595 * while drawing the decoration needs to happen in the actual order.
598 void x_deco_recurse(Con *con) {
600 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
601 TAILQ_EMPTY(&(con->floating_head));
602 con_state *state = state_for_frame(con->frame);
605 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
606 x_deco_recurse(current);
608 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
609 x_deco_recurse(current);
612 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
615 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
616 (!leaf || con->mapped))
617 x_draw_decoration(con);
621 * Sets or removes the _NET_WM_STATE_HIDDEN property on con if necessary.
624 static void set_hidden_state(Con *con) {
625 if (con->window == NULL) {
629 con_state *state = state_for_frame(con->frame);
630 bool should_be_hidden = con_is_hidden(con);
631 if (should_be_hidden == state->is_hidden)
634 unsigned int num = 0;
636 if (should_be_hidden) {
637 DLOG("setting _NET_WM_STATE_HIDDEN for con = %p\n", con);
638 values[num++] = A__NET_WM_STATE_HIDDEN;
640 DLOG("removing _NET_WM_STATE_HIDDEN for con = %p\n", con);
643 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id, A__NET_WM_STATE, XCB_ATOM_ATOM, 32, num, values);
644 state->is_hidden = should_be_hidden;
648 * This function pushes the properties of each node of the layout tree to
649 * X11 if they have changed (like the map state, position of the window, …).
650 * It recursively traverses all children of the given node.
653 void x_push_node(Con *con) {
656 Rect rect = con->rect;
658 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
659 state = state_for_frame(con->frame);
661 if (state->name != NULL) {
662 DLOG("pushing name %s for con %p\n", state->name, con);
664 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
665 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
669 if (con->window == NULL) {
670 /* Calculate the height of all window decorations which will be drawn on to
672 uint32_t max_y = 0, max_height = 0;
673 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
674 Rect *dr = &(current->deco_rect);
675 if (dr->y >= max_y && dr->height >= max_height) {
677 max_height = dr->height;
680 rect.height = max_y + max_height;
681 if (rect.height == 0)
685 /* reparent the child window (when the window was moved due to a sticky
687 if (state->need_reparent && con->window != NULL) {
688 DLOG("Reparenting child window\n");
690 /* Temporarily set the event masks to XCB_NONE so that we won’t get
691 * UnmapNotify events (otherwise the handler would close the container).
692 * These events are generated automatically when reparenting. */
693 uint32_t values[] = {XCB_NONE};
694 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
695 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
697 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
699 values[0] = FRAME_EVENT_MASK;
700 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
701 values[0] = CHILD_EVENT_MASK;
702 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
704 state->old_frame = XCB_NONE;
705 state->need_reparent = false;
708 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
709 con, con->window->id, con->ignore_unmap);
712 /* The pixmap of a borderless leaf container will not be used except
713 * for the titlebar in a stack or tabs (issue #1013). */
714 bool is_pixmap_needed = (con->border_style != BS_NONE ||
716 con->parent->layout == L_STACKED ||
717 con->parent->layout == L_TABBED);
719 bool fake_notify = false;
720 /* Set new position if rect changed (and if height > 0) or if the pixmap
721 * needs to be recreated */
722 if ((is_pixmap_needed && con->pixmap == XCB_NONE) || (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
724 /* We first create the new pixmap, then render to it, set it as the
725 * background and only afterwards change the window size. This reduces
728 /* As the pixmap only depends on the size and not on the position, it
729 * is enough to check if width/height have changed. Also, we don’t
730 * create a pixmap at all when the window is actually not visible
731 * (height == 0) or when it is not needed. */
732 bool has_rect_changed = (state->rect.width != rect.width || state->rect.height != rect.height);
734 /* Check if the container has an unneeded pixmap left over from
735 * previously having a border or titlebar. */
736 if (!is_pixmap_needed && con->pixmap != XCB_NONE) {
737 xcb_free_pixmap(conn, con->pixmap);
738 con->pixmap = XCB_NONE;
741 if (is_pixmap_needed && (has_rect_changed || con->pixmap == XCB_NONE)) {
742 if (con->pixmap == 0) {
743 con->pixmap = xcb_generate_id(conn);
744 con->pm_gc = xcb_generate_id(conn);
746 xcb_free_pixmap(conn, con->pixmap);
747 xcb_free_gc(conn, con->pm_gc);
750 uint16_t win_depth = root_depth;
752 win_depth = con->window->depth;
754 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
756 /* For the graphics context, we disable GraphicsExposure events.
757 * Those will be sent when a CopyArea request cannot be fulfilled
758 * properly due to parts of the source being unmapped or otherwise
759 * unavailable. Since we always copy from pixmaps to windows, this
760 * is not a concern for us. */
761 uint32_t values[] = {0};
762 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
764 con->pixmap_recreated = true;
766 /* Don’t render the decoration for windows inside a stack which are
767 * not visible right now */
769 con->parent->layout != L_STACKED ||
770 TAILQ_FIRST(&(con->parent->focus_head)) == con)
771 /* Render the decoration now to make the correct decoration visible
772 * from the very first moment. Later calls will be cached, so this
773 * doesn’t hurt performance. */
777 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
778 /* flush to ensure that the following commands are sent in a single
779 * buffer and will be processed directly afterwards (the contents of a
780 * window get lost when resizing it, therefore we want to provide it as
781 * fast as possible) */
783 xcb_set_window_rect(conn, con->frame, rect);
784 if (con->pixmap != XCB_NONE)
785 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
788 memcpy(&(state->rect), &rect, sizeof(Rect));
792 /* dito, but for child windows */
793 if (con->window != NULL &&
794 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
795 DLOG("setting window rect (%d, %d, %d, %d)\n",
796 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
797 xcb_set_window_rect(conn, con->window->id, con->window_rect);
798 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
802 /* Map if map state changed, also ensure that the child window
803 * is changed if we are mapped and there is a new, unmapped child window.
804 * Unmaps are handled in x_push_node_unmaps(). */
805 if ((state->mapped != con->mapped || (con->window != NULL && !state->child_mapped)) &&
807 xcb_void_cookie_t cookie;
809 if (con->window != NULL) {
810 /* Set WM_STATE_NORMAL because GTK applications don’t want to
811 * drag & drop if we don’t. Also, xprop(1) needs it. */
812 long data[] = {XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE};
813 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
814 A_WM_STATE, A_WM_STATE, 32, 2, data);
818 if (!state->child_mapped && con->window != NULL) {
819 cookie = xcb_map_window(conn, con->window->id);
821 /* We are interested in EnterNotifys as soon as the window is
823 values[0] = CHILD_EVENT_MASK;
824 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
825 DLOG("mapping child window (serial %d)\n", cookie.sequence);
826 state->child_mapped = true;
829 cookie = xcb_map_window(conn, con->frame);
831 values[0] = FRAME_EVENT_MASK;
832 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
834 /* copy the pixmap contents to the frame window immediately after mapping */
835 if (con->pixmap != XCB_NONE)
836 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
839 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
840 state->mapped = con->mapped;
843 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
846 DLOG("Sending fake configure notify\n");
847 fake_absolute_configure_notify(con);
850 set_hidden_state(con);
852 /* Handle all children and floating windows of this node. We recurse
853 * in focus order to display the focused client in a stack first when
854 * switching workspaces (reduces flickering). */
855 TAILQ_FOREACH(current, &(con->focus_head), focused)
856 x_push_node(current);
860 * Same idea as in x_push_node(), but this function only unmaps windows. It is
861 * necessary to split this up to handle new fullscreen clients properly: The
862 * new window needs to be mapped and focus needs to be set *before* the
863 * underlying windows are unmapped. Otherwise, focus will revert to the
864 * PointerRoot and will then be set to the new window, generating unnecessary
865 * FocusIn/FocusOut events.
868 static void x_push_node_unmaps(Con *con) {
872 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
873 state = state_for_frame(con->frame);
875 /* map/unmap if map state changed, also ensure that the child window
876 * is changed if we are mapped *and* in initial state (meaning the
877 * container was empty before, but now got a child) */
878 if (state->unmap_now) {
879 xcb_void_cookie_t cookie;
880 if (con->window != NULL) {
881 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
882 long data[] = {XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE};
883 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
884 A_WM_STATE, A_WM_STATE, 32, 2, data);
887 cookie = xcb_unmap_window(conn, con->frame);
888 DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
889 /* we need to increase ignore_unmap for this container (if it
890 * contains a window) and for every window "under" this one which
891 * contains a window */
892 if (con->window != NULL) {
894 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
896 state->mapped = con->mapped;
899 /* handle all children and floating windows of this node */
900 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
901 x_push_node_unmaps(current);
903 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
904 x_push_node_unmaps(current);
908 * Returns true if the given container is currently attached to its parent.
910 * TODO: Remove once #1185 has been fixed
912 static bool is_con_attached(Con *con) {
913 if (con->parent == NULL)
917 TAILQ_FOREACH(current, &(con->parent->nodes_head), nodes) {
926 * Pushes all changes (state of each node, see x_push_node() and the window
929 * NOTE: We need to push the stack first so that the windows have the correct
930 * stacking order. This is relevant for workspace switching where we map the
931 * windows because mapping may generate EnterNotify events. When they are
932 * generated in the wrong order, this will cause focus problems when switching
936 void x_push_changes(Con *con) {
938 xcb_query_pointer_cookie_t pointercookie;
940 /* If we need to warp later, we request the pointer position as soon as possible */
942 pointercookie = xcb_query_pointer(conn, root);
945 DLOG("-- PUSHING WINDOW STACK --\n");
946 //DLOG("Disabling EnterNotify\n");
947 uint32_t values[1] = {XCB_NONE};
948 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
950 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
952 //DLOG("Done, EnterNotify disabled\n");
953 bool order_changed = false;
954 bool stacking_changed = false;
956 /* count first, necessary to (re)allocate memory for the bottom-to-top
957 * stack afterwards */
959 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
960 if (con_has_managed_window(state->con))
963 /* The bottom-to-top window stack of all windows which are managed by i3.
964 * Used for x_get_window_stack(). */
965 static xcb_window_t *client_list_windows = NULL;
966 static int client_list_count = 0;
968 if (cnt != client_list_count) {
969 client_list_windows = srealloc(client_list_windows, sizeof(xcb_window_t) * cnt);
970 client_list_count = cnt;
973 xcb_window_t *walk = client_list_windows;
975 /* X11 correctly represents the stack if we push it from bottom to top */
976 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
977 if (con_has_managed_window(state->con))
978 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
980 //DLOG("stack: 0x%08x\n", state->id);
981 con_state *prev = CIRCLEQ_PREV(state, state);
982 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
983 if (prev != old_prev)
984 order_changed = true;
985 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
986 stacking_changed = true;
987 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
989 mask |= XCB_CONFIG_WINDOW_SIBLING;
990 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
991 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
993 xcb_configure_window(conn, prev->id, mask, values);
995 state->initial = false;
998 /* If we re-stacked something (or a new window appeared), we need to update
999 * the _NET_CLIENT_LIST and _NET_CLIENT_LIST_STACKING hints */
1000 if (stacking_changed) {
1001 DLOG("Client list changed (%i clients)\n", cnt);
1002 ewmh_update_client_list_stacking(client_list_windows, client_list_count);
1004 walk = client_list_windows;
1006 /* reorder by initial mapping */
1007 TAILQ_FOREACH(state, &initial_mapping_head, initial_mapping_order) {
1008 if (con_has_managed_window(state->con))
1009 *walk++ = state->con->window->id;
1012 ewmh_update_client_list(client_list_windows, client_list_count);
1015 DLOG("PUSHING CHANGES\n");
1019 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
1020 if (!pointerreply) {
1021 ELOG("Could not query pointer position, not warping pointer\n");
1023 int mid_x = warp_to->x + (warp_to->width / 2);
1024 int mid_y = warp_to->y + (warp_to->height / 2);
1026 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
1027 Output *target = get_output_containing(mid_x, mid_y);
1028 if (current != target) {
1029 /* Ignore MotionNotify events generated by warping */
1030 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT});
1031 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
1032 xcb_change_window_attributes(conn, root, XCB_CW_EVENT_MASK, (uint32_t[]){ROOT_EVENT_MASK});
1038 //DLOG("Re-enabling EnterNotify\n");
1039 values[0] = FRAME_EVENT_MASK;
1040 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1042 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1044 //DLOG("Done, EnterNotify re-enabled\n");
1046 x_deco_recurse(con);
1048 xcb_window_t to_focus = focused->frame;
1049 if (focused->window != NULL)
1050 to_focus = focused->window->id;
1052 if (focused_id != to_focus) {
1053 if (!focused->mapped) {
1054 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
1055 /* Invalidate focused_id to correctly focus new windows with the same ID */
1056 focused_id = XCB_NONE;
1058 if (focused->window != NULL &&
1059 focused->window->needs_take_focus &&
1060 focused->window->doesnt_accept_focus) {
1061 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
1062 to_focus, focused, focused->name);
1063 send_take_focus(to_focus, last_timestamp);
1065 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1067 if (to_focus != last_focused && is_con_attached(focused))
1068 ipc_send_window_event("focus", focused);
1070 DLOG("Updating focus (focused: %p / %s) to X11 window 0x%08x\n", focused, focused->name, to_focus);
1071 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
1072 * no focus change events for our own focus changes. We only want
1073 * these generated by the clients. */
1074 if (focused->window != NULL) {
1075 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
1076 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1078 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
1079 if (focused->window != NULL) {
1080 values[0] = CHILD_EVENT_MASK;
1081 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
1084 ewmh_update_active_window((con_has_managed_window(focused) ? focused->window->id : XCB_WINDOW_NONE));
1086 if (to_focus != XCB_NONE && to_focus != last_focused && focused->window != NULL && is_con_attached(focused))
1087 ipc_send_window_event("focus", focused);
1090 focused_id = last_focused = to_focus;
1094 if (focused_id == XCB_NONE) {
1095 /* If we still have no window to focus, we focus the EWMH window instead. We use this rather than the
1096 * root window in order to avoid an X11 fallback mechanism causing a ghosting effect (see #1378). */
1097 DLOG("Still no window focused, better set focus to the EWMH support window (%d)\n", ewmh_window);
1098 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, ewmh_window, XCB_CURRENT_TIME);
1099 ewmh_update_active_window(XCB_WINDOW_NONE);
1100 focused_id = ewmh_window;
1104 DLOG("ENDING CHANGES\n");
1106 /* Disable EnterWindow events for windows which will be unmapped in
1107 * x_push_node_unmaps() now. Unmapping windows happens when switching
1108 * workspaces. We want to avoid getting EnterNotifies during that phase
1109 * because they would screw up our focus. One of these cases is having a
1110 * stack with two windows. If the first window is focused and gets
1111 * unmapped, the second one appears under the cursor and therefore gets an
1112 * EnterNotify event. */
1113 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
1114 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1115 if (!state->unmap_now)
1117 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
1120 /* Push all pending unmaps */
1121 x_push_node_unmaps(con);
1123 /* save the current stack as old stack */
1124 CIRCLEQ_FOREACH(state, &state_head, state) {
1125 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
1126 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
1128 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
1129 // DLOG("old stack: 0x%08x\n", state->id);
1136 * Raises the specified container in the internal stack of X windows. The
1137 * next call to x_push_changes() will make the change visible in X11.
1140 void x_raise_con(Con *con) {
1142 state = state_for_frame(con->frame);
1143 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1145 CIRCLEQ_REMOVE(&state_head, state, state);
1146 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1150 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1151 * of the given name. Used for properly tagging the windows for easily spotting
1152 * i3 windows in xwininfo -root -all.
1155 void x_set_name(Con *con, const char *name) {
1156 struct con_state *state;
1158 if ((state = state_for_frame(con->frame)) == NULL) {
1159 ELOG("window state not found\n");
1164 state->name = sstrdup(name);
1168 * Set up the I3_SHMLOG_PATH atom.
1171 void update_shmlog_atom() {
1172 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root,
1173 A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1174 strlen(shmlogname), shmlogname);
1178 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1181 void x_set_i3_atoms(void) {
1182 pid_t pid = getpid();
1183 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1184 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1185 current_socketpath);
1186 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1187 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1188 strlen(current_configpath), current_configpath);
1189 update_shmlog_atom();
1193 * Set warp_to coordinates. This will trigger on the next call to
1197 void x_set_warp_to(Rect *rect) {
1198 if (config.mouse_warping != POINTER_WARPING_NONE)
1203 * Applies the given mask to the event mask of every i3 window decoration X11
1204 * window. This is useful to disable EnterNotify while resizing so that focus
1208 void x_mask_event_mask(uint32_t mask) {
1209 uint32_t values[] = {FRAME_EVENT_MASK & mask};
1212 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1214 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);