2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
7 * x.c: Interface to X11, transfers our in-memory state to X11 (see also
8 * render.c). Basically a big state machine.
13 /* Stores the X11 window ID of the currently focused window */
14 xcb_window_t focused_id = XCB_NONE;
16 /* The bottom-to-top window stack of all windows which are managed by i3.
17 * Used for x_get_window_stack(). */
18 static xcb_window_t *btt_stack;
19 static int btt_stack_num;
21 /* Stores coordinates to warp mouse pointer to if set */
25 * Describes the X11 state we may modify (map state, position, window stack).
26 * There is one entry per container. The state represents the current situation
27 * as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
28 * which represents the order that will be pushed to X11, while old_state_head
29 * represents the current order). It will be updated in x_push_changes().
32 typedef struct con_state {
38 /** The con for which this state is. */
41 /* For reparenting, we have a flag (need_reparent) and the X ID of the old
42 * frame this window was in. The latter is necessary because we need to
43 * ignore UnmapNotify events (by changing the window event mask). */
45 xcb_window_t old_frame;
54 CIRCLEQ_ENTRY(con_state) state;
55 CIRCLEQ_ENTRY(con_state) old_state;
58 CIRCLEQ_HEAD(state_head, con_state) state_head =
59 CIRCLEQ_HEAD_INITIALIZER(state_head);
61 CIRCLEQ_HEAD(old_state_head, con_state) old_state_head =
62 CIRCLEQ_HEAD_INITIALIZER(old_state_head);
65 * Returns the container state for the given frame. This function always
66 * returns a container state (otherwise, there is a bug in the code and the
67 * container state of a container for which x_con_init() was not called was
71 static con_state *state_for_frame(xcb_window_t window) {
73 CIRCLEQ_FOREACH(state, &state_head, state)
74 if (state->id == window)
77 /* TODO: better error handling? */
78 ELOG("No state found\n");
84 * Initializes the X11 part for the given container. Called exactly once for
85 * every container from con_new().
88 void x_con_init(Con *con, uint16_t depth) {
89 /* TODO: maybe create the window when rendering first? we could then even
90 * get the initial geometry right */
95 xcb_visualid_t visual = XCB_COPY_FROM_PARENT;
96 xcb_colormap_t win_colormap = XCB_NONE;
97 if (depth != root_depth && depth != XCB_COPY_FROM_PARENT) {
98 /* For custom visuals, we need to create a colormap before creating
99 * this window. It will be freed directly after creating the window. */
100 visual = get_visualid_by_depth(depth);
101 win_colormap = xcb_generate_id(conn);
102 xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
104 /* We explicitly set a background color and border color (even though we
105 * don’t even have a border) because the X11 server requires us to when
106 * using 32 bit color depths, see
107 * http://stackoverflow.com/questions/3645632 */
108 mask |= XCB_CW_BACK_PIXEL;
109 values[0] = root_screen->black_pixel;
111 mask |= XCB_CW_BORDER_PIXEL;
112 values[1] = root_screen->black_pixel;
114 /* our own frames should not be managed */
115 mask |= XCB_CW_OVERRIDE_REDIRECT;
118 /* see include/xcb.h for the FRAME_EVENT_MASK */
119 mask |= XCB_CW_EVENT_MASK;
120 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
122 mask |= XCB_CW_COLORMAP;
123 values[4] = win_colormap;
125 /* our own frames should not be managed */
126 mask = XCB_CW_OVERRIDE_REDIRECT;
129 /* see include/xcb.h for the FRAME_EVENT_MASK */
130 mask |= XCB_CW_EVENT_MASK;
131 values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
133 mask |= XCB_CW_COLORMAP;
134 values[2] = colormap;
137 Rect dims = { -15, -15, 10, 10 };
138 con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
140 if (win_colormap != XCB_NONE)
141 xcb_free_colormap(conn, win_colormap);
143 struct con_state *state = scalloc(sizeof(struct con_state));
144 state->id = con->frame;
145 state->mapped = false;
146 state->initial = true;
147 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
148 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
149 DLOG("adding new state for window id 0x%08x\n", state->id);
153 * Re-initializes the associated X window state for this container. You have
154 * to call this when you assign a client to an empty container to ensure that
155 * its state gets updated correctly.
158 void x_reinit(Con *con) {
159 struct con_state *state;
161 if ((state = state_for_frame(con->frame)) == NULL) {
162 ELOG("window state not found\n");
166 DLOG("resetting state %p to initial\n", state);
167 state->initial = true;
168 state->child_mapped = false;
170 memset(&(state->window_rect), 0, sizeof(Rect));
174 * Reparents the child window of the given container (necessary for sticky
175 * containers). The reparenting happens in the next call of x_push_changes().
178 void x_reparent_child(Con *con, Con *old) {
179 struct con_state *state;
180 if ((state = state_for_frame(con->frame)) == NULL) {
181 ELOG("window state for con not found\n");
185 state->need_reparent = true;
186 state->old_frame = old->frame;
190 * Moves a child window from Container src to Container dest.
193 void x_move_win(Con *src, Con *dest) {
194 struct con_state *state_src, *state_dest;
196 if ((state_src = state_for_frame(src->frame)) == NULL) {
197 ELOG("window state for src not found\n");
201 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
202 ELOG("window state for dest not found\n");
206 state_dest->con = state_src->con;
207 state_src->con = NULL;
209 Rect zero = { 0, 0, 0, 0 };
210 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
211 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
212 DLOG("COPYING RECT\n");
217 * Kills the window decoration associated with the given container.
220 void x_con_kill(Con *con) {
223 xcb_destroy_window(conn, con->frame);
224 xcb_free_pixmap(conn, con->pixmap);
225 xcb_free_gc(conn, con->pm_gc);
226 state = state_for_frame(con->frame);
227 CIRCLEQ_REMOVE(&state_head, state, state);
228 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
232 /* Invalidate focused_id to correctly focus new windows with the same ID */
233 focused_id = XCB_NONE;
237 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
240 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
241 xcb_get_property_cookie_t cookie;
242 xcb_icccm_get_wm_protocols_reply_t protocols;
245 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
246 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
249 /* Check if the client’s protocols have the requested atom set */
250 for (uint32_t i = 0; i < protocols.atoms_len; i++)
251 if (protocols.atoms[i] == atom)
254 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
260 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
263 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
264 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
265 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
266 if (kill_window == KILL_WINDOW) {
267 LOG("Killing specific window 0x%08x\n", window);
268 xcb_destroy_window(conn, window);
270 LOG("Killing the X11 client which owns window 0x%08x\n", window);
271 xcb_kill_client(conn, window);
276 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
277 * In order to properly initialize these bytes, we allocate 32 bytes even
278 * though we only need less for an xcb_configure_notify_event_t */
279 void *event = scalloc(32);
280 xcb_client_message_event_t *ev = event;
282 ev->response_type = XCB_CLIENT_MESSAGE;
284 ev->type = A_WM_PROTOCOLS;
286 ev->data.data32[0] = A_WM_DELETE_WINDOW;
287 ev->data.data32[1] = XCB_CURRENT_TIME;
289 LOG("Sending WM_DELETE to the client\n");
290 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
296 * Draws the decoration of the given container onto its parent.
299 void x_draw_decoration(Con *con) {
300 Con *parent = con->parent;
301 bool leaf = con_is_leaf(con);
302 /* This code needs to run for:
304 * • non-leaf containers which are in a stacked/tabbed container
306 * It does not need to run for:
307 * • floating containers (they don’t have a decoration)
310 parent->layout != L_STACKED &&
311 parent->layout != L_TABBED) ||
312 con->type == CT_FLOATING_CON)
315 /* Skip containers whose height is 0 (for example empty dockareas) */
316 if (con->rect.height == 0)
319 /* Skip containers whose pixmap has not yet been created (can happen when
320 * decoration rendering happens recursively for a window for which
321 * x_push_node() was not yet called) */
322 if (leaf && con->pixmap == XCB_NONE)
325 /* 1: build deco_params and compare with cache */
326 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
328 /* find out which colors to use */
330 p->color = &config.client.urgent;
331 else if (con == focused || con_inside_focused(con))
332 p->color = &config.client.focused;
333 else if (con == TAILQ_FIRST(&(parent->focus_head)))
334 p->color = &config.client.focused_inactive;
336 p->color = &config.client.unfocused;
338 p->border_style = con_border_style(con);
340 Rect *r = &(con->rect);
341 Rect *w = &(con->window_rect);
342 p->con_rect = (struct width_height){ r->width, r->height };
343 p->con_window_rect = (struct width_height){ w->width, w->height };
344 p->con_deco_rect = con->deco_rect;
345 p->background = config.client.background;
346 p->con_is_leaf = con_is_leaf(con);
348 if (con->deco_render_params != NULL &&
349 (con->window == NULL || !con->window->name_x_changed) &&
350 !parent->pixmap_recreated &&
351 !con->pixmap_recreated &&
352 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
358 while ((next = TAILQ_NEXT(next, nodes))) {
359 FREE(next->deco_render_params);
362 FREE(con->deco_render_params);
363 con->deco_render_params = p;
365 if (con->window != NULL && con->window->name_x_changed)
366 con->window->name_x_changed = false;
368 parent->pixmap_recreated = false;
369 con->pixmap_recreated = false;
371 /* 2: draw the client.background, but only for the parts around the client_rect */
372 if (con->window != NULL) {
373 xcb_rectangle_t background[] = {
375 { 0, 0, r->width, w->y },
377 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
379 { 0, 0, w->x, r->height },
381 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
384 for (int i = 0; i < 4; i++)
385 DLOG("rect is (%d, %d) with %d x %d\n",
393 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
394 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
397 /* 3: draw a rectangle in border color around the client */
398 if (p->border_style != BS_NONE && p->con_is_leaf) {
399 Rect br = con_border_style_rect(con);
401 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
402 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
403 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);
406 /* These rectangles represents the border around the child window
407 * (left, bottom and right part). We don’t just fill the whole
408 * rectangle because some childs are not freely resizable and we want
409 * their background color to "shine through". */
410 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
411 xcb_rectangle_t borders[] = {
412 { 0, 0, br.x, r->height },
413 { 0, r->height + br.height + br.y, r->width, r->height },
414 { r->width + br.width + br.x, 0, r->width, r->height }
416 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 3, borders);
417 /* 1pixel border needs an additional line at the top */
418 if (p->border_style == BS_1PIXEL) {
419 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
420 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
423 /* Highlight the side of the border at which the next window will be
424 * opened if we are rendering a single window within a split container
425 * (which is undistinguishable from a single window outside a split
426 * container otherwise. */
427 if (TAILQ_NEXT(con, nodes) == NULL &&
428 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
429 con->parent->type != CT_FLOATING_CON) {
430 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator });
431 if (con_orientation(con->parent) == HORIZ)
432 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
433 { r->width + br.width + br.x, 0, r->width, r->height + br.height } });
435 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
436 { br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } });
441 /* if this is a borderless/1pixel window, we don’t need to render the
443 if (p->border_style != BS_NORMAL)
446 /* 4: paint the bar */
447 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
448 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
449 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
451 /* 5: draw two unconnected lines in border color */
452 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
453 Rect *dr = &(con->deco_rect);
454 xcb_segment_t segments[] = {
456 dr->x + dr->width - 1, dr->y },
458 { dr->x + 2, dr->y + dr->height - 1,
459 dr->x + dr->width - 3, dr->y + dr->height - 1 }
461 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
463 /* 6: draw the title */
464 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
465 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
467 struct Window *win = con->window;
468 if (win == NULL || win->name_x == NULL) {
469 /* this is a non-leaf container, we need to make up a good description */
470 // TODO: use a good description instead of just "another container"
471 draw_text("another container", strlen("another container"), false,
472 parent->pixmap, parent->pm_gc,
473 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
474 con->deco_rect.width - 2);
478 int indent_level = 0,
480 Con *il_parent = parent;
481 if (il_parent->layout != L_STACKED) {
483 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
484 if (il_parent->layout == L_STACKED)
486 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
488 il_parent = il_parent->parent;
492 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
493 int indent_px = (indent_level * 5) * indent_mult;
495 draw_text(win->name_x, win->name_len, win->uses_net_wm_name,
496 parent->pixmap, parent->pm_gc,
497 con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y,
498 con->deco_rect.width - 2 - indent_px);
500 /* Since we don’t clip the text at all, it might in some cases be painted
501 * on the border pixels on the right side of a window. Therefore, we draw
502 * the right border again after rendering the text (and the unconnected
503 * lines in border color). */
505 /* Draw a separator line after every tab (except the last one), so that
506 * tabs can be easily distinguished. */
507 if (parent->layout == L_TABBED && TAILQ_NEXT(con, nodes) != NULL) {
508 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
510 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
512 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 4,
514 { dr->x + dr->width - 1, dr->y },
515 { dr->x + dr->width - 1, dr->y + dr->height },
516 { dr->x + dr->width - 2, dr->y },
517 { dr->x + dr->width - 2, dr->y + dr->height }
520 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
521 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
524 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
528 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
529 * because x_push_node uses focus order to recurse (see the comment above)
530 * while drawing the decoration needs to happen in the actual order.
533 void x_deco_recurse(Con *con) {
535 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
536 TAILQ_EMPTY(&(con->floating_head));
537 con_state *state = state_for_frame(con->frame);
540 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
541 x_deco_recurse(current);
543 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
544 x_deco_recurse(current);
547 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
550 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
551 (!leaf || con->mapped))
552 x_draw_decoration(con);
556 * This function pushes the properties of each node of the layout tree to
557 * X11 if they have changed (like the map state, position of the window, …).
558 * It recursively traverses all children of the given node.
561 void x_push_node(Con *con) {
564 Rect rect = con->rect;
566 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
567 state = state_for_frame(con->frame);
569 if (state->name != NULL) {
570 DLOG("pushing name %s for con %p\n", state->name, con);
572 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
573 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
577 if (con->window == NULL) {
578 /* Calculate the height of all window decorations which will be drawn on to
580 uint32_t max_y = 0, max_height = 0;
581 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
582 Rect *dr = &(current->deco_rect);
583 if (dr->y >= max_y && dr->height >= max_height) {
585 max_height = dr->height;
588 rect.height = max_y + max_height;
589 if (rect.height == 0)
593 /* reparent the child window (when the window was moved due to a sticky
595 if (state->need_reparent && con->window != NULL) {
596 DLOG("Reparenting child window\n");
598 /* Temporarily set the event masks to XCB_NONE so that we won’t get
599 * UnmapNotify events (otherwise the handler would close the container).
600 * These events are generated automatically when reparenting. */
601 uint32_t values[] = { XCB_NONE };
602 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
603 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
605 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
607 values[0] = FRAME_EVENT_MASK;
608 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
609 values[0] = CHILD_EVENT_MASK;
610 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
612 state->old_frame = XCB_NONE;
613 state->need_reparent = false;
616 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
617 con, con->window->id, con->ignore_unmap);
620 bool fake_notify = false;
621 /* Set new position if rect changed (and if height > 0) */
622 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
624 /* We first create the new pixmap, then render to it, set it as the
625 * background and only afterwards change the window size. This reduces
628 /* As the pixmap only depends on the size and not on the position, it
629 * is enough to check if width/height have changed. Also, we don’t
630 * create a pixmap at all when the window is actually not visible
632 if ((state->rect.width != rect.width ||
633 state->rect.height != rect.height)) {
634 if (con->pixmap == 0) {
635 con->pixmap = xcb_generate_id(conn);
636 con->pm_gc = xcb_generate_id(conn);
638 xcb_free_pixmap(conn, con->pixmap);
639 xcb_free_gc(conn, con->pm_gc);
642 uint16_t win_depth = root_depth;
644 win_depth = con->window->depth;
646 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
648 /* For the graphics context, we disable GraphicsExposure events.
649 * Those will be sent when a CopyArea request cannot be fulfilled
650 * properly due to parts of the source being unmapped or otherwise
651 * unavailable. Since we always copy from pixmaps to windows, this
652 * is not a concern for us. */
653 uint32_t values[] = { 0 };
654 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
656 con->pixmap_recreated = true;
658 /* Don’t render the decoration for windows inside a stack which are
659 * not visible right now */
661 con->parent->layout != L_STACKED ||
662 TAILQ_FIRST(&(con->parent->focus_head)) == con)
663 /* Render the decoration now to make the correct decoration visible
664 * from the very first moment. Later calls will be cached, so this
665 * doesn’t hurt performance. */
669 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
670 /* flush to ensure that the following commands are sent in a single
671 * buffer and will be processed directly afterwards (the contents of a
672 * window get lost when resizing it, therefore we want to provide it as
673 * fast as possible) */
675 xcb_set_window_rect(conn, con->frame, rect);
676 if (con->pixmap != XCB_NONE)
677 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
680 memcpy(&(state->rect), &rect, sizeof(Rect));
684 /* dito, but for child windows */
685 if (con->window != NULL &&
686 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
687 DLOG("setting window rect (%d, %d, %d, %d)\n",
688 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
689 xcb_set_window_rect(conn, con->window->id, con->window_rect);
690 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
694 /* Map if map state changed, also ensure that the child window
695 * is changed if we are mapped *and* in initial state (meaning the
696 * container was empty before, but now got a child). Unmaps are handled in
697 * x_push_node_unmaps(). */
698 if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
700 xcb_void_cookie_t cookie;
702 if (con->window != NULL) {
703 /* Set WM_STATE_NORMAL because GTK applications don’t want to
704 * drag & drop if we don’t. Also, xprop(1) needs it. */
705 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
706 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
707 A_WM_STATE, A_WM_STATE, 32, 2, data);
711 if (!state->child_mapped && con->window != NULL) {
712 cookie = xcb_map_window(conn, con->window->id);
714 /* We are interested in EnterNotifys as soon as the window is
716 values[0] = CHILD_EVENT_MASK;
717 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
718 DLOG("mapping child window (serial %d)\n", cookie.sequence);
719 state->child_mapped = true;
722 cookie = xcb_map_window(conn, con->frame);
724 values[0] = FRAME_EVENT_MASK;
725 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
727 /* copy the pixmap contents to the frame window immediately after mapping */
728 if (con->pixmap != XCB_NONE)
729 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
732 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
733 state->mapped = con->mapped;
736 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
739 DLOG("Sending fake configure notify\n");
740 fake_absolute_configure_notify(con);
743 /* Handle all children and floating windows of this node. We recurse
744 * in focus order to display the focused client in a stack first when
745 * switching workspaces (reduces flickering). */
746 TAILQ_FOREACH(current, &(con->focus_head), focused)
747 x_push_node(current);
751 * Same idea as in x_push_node(), but this function only unmaps windows. It is
752 * necessary to split this up to handle new fullscreen clients properly: The
753 * new window needs to be mapped and focus needs to be set *before* the
754 * underlying windows are unmapped. Otherwise, focus will revert to the
755 * PointerRoot and will then be set to the new window, generating unnecessary
756 * FocusIn/FocusOut events.
759 static void x_push_node_unmaps(Con *con) {
763 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
764 state = state_for_frame(con->frame);
766 /* map/unmap if map state changed, also ensure that the child window
767 * is changed if we are mapped *and* in initial state (meaning the
768 * container was empty before, but now got a child) */
769 if (state->unmap_now) {
770 xcb_void_cookie_t cookie;
771 if (con->window != NULL) {
772 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
773 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
774 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
775 A_WM_STATE, A_WM_STATE, 32, 2, data);
778 cookie = xcb_unmap_window(conn, con->frame);
779 DLOG("unmapping container (serial %d)\n", cookie.sequence);
780 /* we need to increase ignore_unmap for this container (if it
781 * contains a window) and for every window "under" this one which
782 * contains a window */
783 if (con->window != NULL) {
785 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
787 state->mapped = con->mapped;
790 /* handle all children and floating windows of this node */
791 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
792 x_push_node_unmaps(current);
794 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
795 x_push_node_unmaps(current);
799 * Pushes all changes (state of each node, see x_push_node() and the window
802 * NOTE: We need to push the stack first so that the windows have the correct
803 * stacking order. This is relevant for workspace switching where we map the
804 * windows because mapping may generate EnterNotify events. When they are
805 * generated in the wrong order, this will cause focus problems when switching
809 void x_push_changes(Con *con) {
811 xcb_query_pointer_cookie_t pointercookie;
813 /* If we need to warp later, we request the pointer position as soon as possible */
815 pointercookie = xcb_query_pointer(conn, root);
818 DLOG("-- PUSHING WINDOW STACK --\n");
819 //DLOG("Disabling EnterNotify\n");
820 uint32_t values[1] = { XCB_NONE };
821 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
823 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
825 //DLOG("Done, EnterNotify disabled\n");
826 bool order_changed = false;
827 bool stacking_changed = false;
829 /* count first, necessary to (re)allocate memory for the bottom-to-top
830 * stack afterwards */
832 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
833 if (state->con && state->con->window)
836 if (cnt != btt_stack_num) {
837 btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
841 xcb_window_t *walk = btt_stack;
843 /* X11 correctly represents the stack if we push it from bottom to top */
844 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
845 if (state->con && state->con->window)
846 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
848 //DLOG("stack: 0x%08x\n", state->id);
849 con_state *prev = CIRCLEQ_PREV(state, state);
850 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
851 if (prev != old_prev)
852 order_changed = true;
853 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
854 stacking_changed = true;
855 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
857 mask |= XCB_CONFIG_WINDOW_SIBLING;
858 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
859 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
861 xcb_configure_window(conn, prev->id, mask, values);
863 state->initial = false;
866 /* If we re-stacked something (or a new window appeared), we need to update
867 * the _NET_CLIENT_LIST_STACKING hint */
868 if (stacking_changed)
869 ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
871 DLOG("PUSHING CHANGES\n");
875 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
877 ELOG("Could not query pointer position, not warping pointer\n");
879 int mid_x = warp_to->x + (warp_to->width / 2);
880 int mid_y = warp_to->y + (warp_to->height / 2);
882 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
883 Output *target = get_output_containing(mid_x, mid_y);
884 if (current != target)
885 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
890 //DLOG("Re-enabling EnterNotify\n");
891 values[0] = FRAME_EVENT_MASK;
892 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
894 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
896 //DLOG("Done, EnterNotify re-enabled\n");
900 xcb_window_t to_focus = focused->frame;
901 if (focused->window != NULL)
902 to_focus = focused->window->id;
904 if (focused_id != to_focus) {
905 if (!focused->mapped) {
906 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
907 /* Invalidate focused_id to correctly focus new windows with the same ID */
908 focused_id = XCB_NONE;
910 bool set_focus = true;
911 if (focused->window != NULL &&
912 focused->window->needs_take_focus) {
913 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
914 to_focus, focused, focused->name);
915 send_take_focus(to_focus);
916 set_focus = !focused->window->doesnt_accept_focus;
917 DLOG("set_focus = %d\n", set_focus);
921 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
922 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
923 * no focus change events for our own focus changes. We only want
924 * these generated by the clients. */
925 if (focused->window != NULL) {
926 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
927 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
929 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
930 if (focused->window != NULL) {
931 values[0] = CHILD_EVENT_MASK;
932 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
935 ewmh_update_active_window(to_focus);
938 focused_id = to_focus;
942 if (focused_id == XCB_NONE) {
943 DLOG("Still no window focused, better set focus to the root window\n");
944 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
949 DLOG("ENDING CHANGES\n");
951 /* Disable EnterWindow events for windows which will be unmapped in
952 * x_push_node_unmaps() now. Unmapping windows happens when switching
953 * workspaces. We want to avoid getting EnterNotifies during that phase
954 * because they would screw up our focus. One of these cases is having a
955 * stack with two windows. If the first window is focused and gets
956 * unmapped, the second one appears under the cursor and therefore gets an
957 * EnterNotify event. */
958 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
959 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
960 if (!state->unmap_now)
962 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
965 /* Push all pending unmaps */
966 x_push_node_unmaps(con);
968 /* save the current stack as old stack */
969 CIRCLEQ_FOREACH(state, &state_head, state) {
970 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
971 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
973 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
974 // DLOG("old stack: 0x%08x\n", state->id);
981 * Raises the specified container in the internal stack of X windows. The
982 * next call to x_push_changes() will make the change visible in X11.
985 void x_raise_con(Con *con) {
987 state = state_for_frame(con->frame);
988 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
990 CIRCLEQ_REMOVE(&state_head, state, state);
991 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
995 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
996 * of the given name. Used for properly tagging the windows for easily spotting
997 * i3 windows in xwininfo -root -all.
1000 void x_set_name(Con *con, const char *name) {
1001 struct con_state *state;
1003 if ((state = state_for_frame(con->frame)) == NULL) {
1004 ELOG("window state not found\n");
1009 state->name = sstrdup(name);
1013 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1016 void x_set_i3_atoms(void) {
1017 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1018 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1019 current_socketpath);
1020 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1021 strlen(current_configpath), current_configpath);
1022 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1023 strlen(shmlogname), shmlogname);
1027 * Set warp_to coordinates. This will trigger on the next call to
1031 void x_set_warp_to(Rect *rect)
1037 * Applies the given mask to the event mask of every i3 window decoration X11
1038 * window. This is useful to disable EnterNotify while resizing so that focus
1042 void x_mask_event_mask(uint32_t mask) {
1043 uint32_t values[] = { FRAME_EVENT_MASK & mask };
1046 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1048 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);