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);
303 /* This code needs to run for:
305 * • non-leaf containers which are in a stacked/tabbed container
307 * It does not need to run for:
308 * • direct children of outputs
309 * • floating containers (they don’t have a decoration)
312 parent->layout != L_STACKED &&
313 parent->layout != L_TABBED) ||
314 parent->type == CT_OUTPUT ||
315 con->type == CT_FLOATING_CON)
318 /* Skip containers whose height is 0 (for example empty dockareas) */
319 if (con->rect.height == 0)
322 /* Skip containers whose pixmap has not yet been created (can happen when
323 * decoration rendering happens recursively for a window for which
324 * x_push_node() was not yet called) */
325 if (leaf && con->pixmap == XCB_NONE)
328 /* 1: build deco_params and compare with cache */
329 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
331 /* find out which colors to use */
333 p->color = &config.client.urgent;
334 else if (con == focused || con_inside_focused(con))
335 p->color = &config.client.focused;
336 else if (con == TAILQ_FIRST(&(parent->focus_head)))
337 p->color = &config.client.focused_inactive;
339 p->color = &config.client.unfocused;
341 p->border_style = con_border_style(con);
343 Rect *r = &(con->rect);
344 Rect *w = &(con->window_rect);
345 p->con_rect = (struct width_height){ r->width, r->height };
346 p->con_window_rect = (struct width_height){ w->width, w->height };
347 p->con_deco_rect = con->deco_rect;
348 p->background = config.client.background;
349 p->con_is_leaf = con_is_leaf(con);
351 if (con->deco_render_params != NULL &&
352 (con->window == NULL || !con->window->name_x_changed) &&
353 !parent->pixmap_recreated &&
354 !con->pixmap_recreated &&
355 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
361 while ((next = TAILQ_NEXT(next, nodes))) {
362 FREE(next->deco_render_params);
365 FREE(con->deco_render_params);
366 con->deco_render_params = p;
368 if (con->window != NULL && con->window->name_x_changed)
369 con->window->name_x_changed = false;
371 parent->pixmap_recreated = false;
372 con->pixmap_recreated = false;
374 /* 2: draw the client.background, but only for the parts around the client_rect */
375 if (con->window != NULL) {
376 xcb_rectangle_t background[] = {
378 { 0, 0, r->width, w->y },
380 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
382 { 0, 0, w->x, r->height },
384 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
387 for (int i = 0; i < 4; i++)
388 DLOG("rect is (%d, %d) with %d x %d\n",
396 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
397 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
400 /* 3: draw a rectangle in border color around the client */
401 if (p->border_style != BS_NONE && p->con_is_leaf) {
402 /* We might hide some borders adjacent to the screen-edge */
403 adjacent_t borders_to_hide = ADJ_NONE;
404 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
406 Rect br = con_border_style_rect(con);
408 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
409 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
410 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);
413 /* These rectangles represents the border around the child window
414 * (left, bottom and right part). We don’t just fill the whole
415 * rectangle because some childs are not freely resizable and we want
416 * their background color to "shine through". */
417 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
418 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
419 xcb_rectangle_t leftline = { 0, 0, br.x, r->height };
420 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
422 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
423 xcb_rectangle_t rightline = { r->width + br.width + br.x, 0, r->width, r->height };
424 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
426 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
427 xcb_rectangle_t bottomline = { 0, r->height + br.height + br.y, r->width, r->height };
428 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
430 /* 1pixel border needs an additional line at the top */
431 if (p->border_style == BS_1PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
432 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
433 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
436 /* Highlight the side of the border at which the next window will be
437 * opened if we are rendering a single window within a split container
438 * (which is undistinguishable from a single window outside a split
439 * container otherwise. */
440 if (TAILQ_NEXT(con, nodes) == NULL &&
441 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
442 con->parent->type != CT_FLOATING_CON) {
443 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator });
444 if (con_orientation(con->parent) == HORIZ)
445 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
446 { r->width + br.width + br.x, 0, r->width, r->height + br.height } });
448 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
449 { br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } });
454 /* if this is a borderless/1pixel window, we don’t need to render the
456 if (p->border_style != BS_NORMAL)
459 /* 4: paint the bar */
460 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
461 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
462 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
464 /* 5: draw two unconnected lines in border color */
465 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
466 Rect *dr = &(con->deco_rect);
467 xcb_segment_t segments[] = {
469 dr->x + dr->width - 1, dr->y },
471 { dr->x + 2, dr->y + dr->height - 1,
472 dr->x + dr->width - 3, dr->y + dr->height - 1 }
474 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
476 /* 6: draw the title */
477 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
478 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
480 struct Window *win = con->window;
481 if (win == NULL || win->name_x == NULL) {
482 /* this is a non-leaf container, we need to make up a good description */
483 // TODO: use a good description instead of just "another container"
484 draw_text("another container", strlen("another container"), false,
485 parent->pixmap, parent->pm_gc,
486 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
487 con->deco_rect.width - 2);
491 int indent_level = 0,
493 Con *il_parent = parent;
494 if (il_parent->layout != L_STACKED) {
496 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
497 if (il_parent->layout == L_STACKED)
499 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
501 il_parent = il_parent->parent;
505 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
506 int indent_px = (indent_level * 5) * indent_mult;
508 draw_text(win->name_x, win->name_len, win->uses_net_wm_name,
509 parent->pixmap, parent->pm_gc,
510 con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y,
511 con->deco_rect.width - 2 - indent_px);
513 /* Since we don’t clip the text at all, it might in some cases be painted
514 * on the border pixels on the right side of a window. Therefore, we draw
515 * the right border again after rendering the text (and the unconnected
516 * lines in border color). */
518 /* Draw a separator line after every tab (except the last one), so that
519 * tabs can be easily distinguished. */
520 if (parent->layout == L_TABBED && TAILQ_NEXT(con, nodes) != NULL) {
521 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
523 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
525 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 4,
527 { dr->x + dr->width - 1, dr->y },
528 { dr->x + dr->width - 1, dr->y + dr->height },
529 { dr->x + dr->width - 2, dr->y },
530 { dr->x + dr->width - 2, dr->y + dr->height }
533 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
534 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
537 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
541 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
542 * because x_push_node uses focus order to recurse (see the comment above)
543 * while drawing the decoration needs to happen in the actual order.
546 void x_deco_recurse(Con *con) {
548 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
549 TAILQ_EMPTY(&(con->floating_head));
550 con_state *state = state_for_frame(con->frame);
553 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
554 x_deco_recurse(current);
556 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
557 x_deco_recurse(current);
560 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
563 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
564 (!leaf || con->mapped))
565 x_draw_decoration(con);
569 * This function pushes the properties of each node of the layout tree to
570 * X11 if they have changed (like the map state, position of the window, …).
571 * It recursively traverses all children of the given node.
574 void x_push_node(Con *con) {
577 Rect rect = con->rect;
579 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
580 state = state_for_frame(con->frame);
582 if (state->name != NULL) {
583 DLOG("pushing name %s for con %p\n", state->name, con);
585 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
586 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
590 if (con->window == NULL) {
591 /* Calculate the height of all window decorations which will be drawn on to
593 uint32_t max_y = 0, max_height = 0;
594 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
595 Rect *dr = &(current->deco_rect);
596 if (dr->y >= max_y && dr->height >= max_height) {
598 max_height = dr->height;
601 rect.height = max_y + max_height;
602 if (rect.height == 0)
606 /* reparent the child window (when the window was moved due to a sticky
608 if (state->need_reparent && con->window != NULL) {
609 DLOG("Reparenting child window\n");
611 /* Temporarily set the event masks to XCB_NONE so that we won’t get
612 * UnmapNotify events (otherwise the handler would close the container).
613 * These events are generated automatically when reparenting. */
614 uint32_t values[] = { XCB_NONE };
615 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
616 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
618 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
620 values[0] = FRAME_EVENT_MASK;
621 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
622 values[0] = CHILD_EVENT_MASK;
623 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
625 state->old_frame = XCB_NONE;
626 state->need_reparent = false;
629 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
630 con, con->window->id, con->ignore_unmap);
633 bool fake_notify = false;
634 /* Set new position if rect changed (and if height > 0) */
635 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
637 /* We first create the new pixmap, then render to it, set it as the
638 * background and only afterwards change the window size. This reduces
641 /* As the pixmap only depends on the size and not on the position, it
642 * is enough to check if width/height have changed. Also, we don’t
643 * create a pixmap at all when the window is actually not visible
645 if ((state->rect.width != rect.width ||
646 state->rect.height != rect.height)) {
647 if (con->pixmap == 0) {
648 con->pixmap = xcb_generate_id(conn);
649 con->pm_gc = xcb_generate_id(conn);
651 xcb_free_pixmap(conn, con->pixmap);
652 xcb_free_gc(conn, con->pm_gc);
655 uint16_t win_depth = root_depth;
657 win_depth = con->window->depth;
659 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
661 /* For the graphics context, we disable GraphicsExposure events.
662 * Those will be sent when a CopyArea request cannot be fulfilled
663 * properly due to parts of the source being unmapped or otherwise
664 * unavailable. Since we always copy from pixmaps to windows, this
665 * is not a concern for us. */
666 uint32_t values[] = { 0 };
667 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
669 con->pixmap_recreated = true;
671 /* Don’t render the decoration for windows inside a stack which are
672 * not visible right now */
674 con->parent->layout != L_STACKED ||
675 TAILQ_FIRST(&(con->parent->focus_head)) == con)
676 /* Render the decoration now to make the correct decoration visible
677 * from the very first moment. Later calls will be cached, so this
678 * doesn’t hurt performance. */
682 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
683 /* flush to ensure that the following commands are sent in a single
684 * buffer and will be processed directly afterwards (the contents of a
685 * window get lost when resizing it, therefore we want to provide it as
686 * fast as possible) */
688 xcb_set_window_rect(conn, con->frame, rect);
689 if (con->pixmap != XCB_NONE)
690 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
693 memcpy(&(state->rect), &rect, sizeof(Rect));
697 /* dito, but for child windows */
698 if (con->window != NULL &&
699 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
700 DLOG("setting window rect (%d, %d, %d, %d)\n",
701 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
702 xcb_set_window_rect(conn, con->window->id, con->window_rect);
703 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
707 /* Map if map state changed, also ensure that the child window
708 * is changed if we are mapped *and* in initial state (meaning the
709 * container was empty before, but now got a child). Unmaps are handled in
710 * x_push_node_unmaps(). */
711 if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
713 xcb_void_cookie_t cookie;
715 if (con->window != NULL) {
716 /* Set WM_STATE_NORMAL because GTK applications don’t want to
717 * drag & drop if we don’t. Also, xprop(1) needs it. */
718 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
719 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
720 A_WM_STATE, A_WM_STATE, 32, 2, data);
724 if (!state->child_mapped && con->window != NULL) {
725 cookie = xcb_map_window(conn, con->window->id);
727 /* We are interested in EnterNotifys as soon as the window is
729 values[0] = CHILD_EVENT_MASK;
730 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
731 DLOG("mapping child window (serial %d)\n", cookie.sequence);
732 state->child_mapped = true;
735 cookie = xcb_map_window(conn, con->frame);
737 values[0] = FRAME_EVENT_MASK;
738 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
740 /* copy the pixmap contents to the frame window immediately after mapping */
741 if (con->pixmap != XCB_NONE)
742 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
745 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
746 state->mapped = con->mapped;
749 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
752 DLOG("Sending fake configure notify\n");
753 fake_absolute_configure_notify(con);
756 /* Handle all children and floating windows of this node. We recurse
757 * in focus order to display the focused client in a stack first when
758 * switching workspaces (reduces flickering). */
759 TAILQ_FOREACH(current, &(con->focus_head), focused)
760 x_push_node(current);
764 * Same idea as in x_push_node(), but this function only unmaps windows. It is
765 * necessary to split this up to handle new fullscreen clients properly: The
766 * new window needs to be mapped and focus needs to be set *before* the
767 * underlying windows are unmapped. Otherwise, focus will revert to the
768 * PointerRoot and will then be set to the new window, generating unnecessary
769 * FocusIn/FocusOut events.
772 static void x_push_node_unmaps(Con *con) {
776 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
777 state = state_for_frame(con->frame);
779 /* map/unmap if map state changed, also ensure that the child window
780 * is changed if we are mapped *and* in initial state (meaning the
781 * container was empty before, but now got a child) */
782 if (state->unmap_now) {
783 xcb_void_cookie_t cookie;
784 if (con->window != NULL) {
785 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
786 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
787 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
788 A_WM_STATE, A_WM_STATE, 32, 2, data);
791 cookie = xcb_unmap_window(conn, con->frame);
792 DLOG("unmapping container (serial %d)\n", cookie.sequence);
793 /* we need to increase ignore_unmap for this container (if it
794 * contains a window) and for every window "under" this one which
795 * contains a window */
796 if (con->window != NULL) {
798 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
800 state->mapped = con->mapped;
803 /* handle all children and floating windows of this node */
804 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
805 x_push_node_unmaps(current);
807 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
808 x_push_node_unmaps(current);
812 * Pushes all changes (state of each node, see x_push_node() and the window
815 * NOTE: We need to push the stack first so that the windows have the correct
816 * stacking order. This is relevant for workspace switching where we map the
817 * windows because mapping may generate EnterNotify events. When they are
818 * generated in the wrong order, this will cause focus problems when switching
822 void x_push_changes(Con *con) {
824 xcb_query_pointer_cookie_t pointercookie;
826 /* If we need to warp later, we request the pointer position as soon as possible */
828 pointercookie = xcb_query_pointer(conn, root);
831 DLOG("-- PUSHING WINDOW STACK --\n");
832 //DLOG("Disabling EnterNotify\n");
833 uint32_t values[1] = { XCB_NONE };
834 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
836 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
838 //DLOG("Done, EnterNotify disabled\n");
839 bool order_changed = false;
840 bool stacking_changed = false;
842 /* count first, necessary to (re)allocate memory for the bottom-to-top
843 * stack afterwards */
845 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
846 if (state->con && state->con->window)
849 if (cnt != btt_stack_num) {
850 btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
854 xcb_window_t *walk = btt_stack;
856 /* X11 correctly represents the stack if we push it from bottom to top */
857 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
858 if (state->con && state->con->window)
859 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
861 //DLOG("stack: 0x%08x\n", state->id);
862 con_state *prev = CIRCLEQ_PREV(state, state);
863 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
864 if (prev != old_prev)
865 order_changed = true;
866 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
867 stacking_changed = true;
868 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
870 mask |= XCB_CONFIG_WINDOW_SIBLING;
871 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
872 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
874 xcb_configure_window(conn, prev->id, mask, values);
876 state->initial = false;
879 /* If we re-stacked something (or a new window appeared), we need to update
880 * the _NET_CLIENT_LIST_STACKING hint */
881 if (stacking_changed)
882 ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
884 DLOG("PUSHING CHANGES\n");
888 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
890 ELOG("Could not query pointer position, not warping pointer\n");
892 int mid_x = warp_to->x + (warp_to->width / 2);
893 int mid_y = warp_to->y + (warp_to->height / 2);
895 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
896 Output *target = get_output_containing(mid_x, mid_y);
897 if (current != target)
898 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
903 //DLOG("Re-enabling EnterNotify\n");
904 values[0] = FRAME_EVENT_MASK;
905 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
907 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
909 //DLOG("Done, EnterNotify re-enabled\n");
913 xcb_window_t to_focus = focused->frame;
914 if (focused->window != NULL)
915 to_focus = focused->window->id;
917 if (focused_id != to_focus) {
918 if (!focused->mapped) {
919 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
920 /* Invalidate focused_id to correctly focus new windows with the same ID */
921 focused_id = XCB_NONE;
923 bool set_focus = true;
924 if (focused->window != NULL &&
925 focused->window->needs_take_focus) {
926 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
927 to_focus, focused, focused->name);
928 send_take_focus(to_focus);
929 set_focus = !focused->window->doesnt_accept_focus;
930 DLOG("set_focus = %d\n", set_focus);
934 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
935 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
936 * no focus change events for our own focus changes. We only want
937 * these generated by the clients. */
938 if (focused->window != NULL) {
939 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
940 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
942 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
943 if (focused->window != NULL) {
944 values[0] = CHILD_EVENT_MASK;
945 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
948 ewmh_update_active_window(to_focus);
951 focused_id = to_focus;
955 if (focused_id == XCB_NONE) {
956 DLOG("Still no window focused, better set focus to the root window\n");
957 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
962 DLOG("ENDING CHANGES\n");
964 /* Disable EnterWindow events for windows which will be unmapped in
965 * x_push_node_unmaps() now. Unmapping windows happens when switching
966 * workspaces. We want to avoid getting EnterNotifies during that phase
967 * because they would screw up our focus. One of these cases is having a
968 * stack with two windows. If the first window is focused and gets
969 * unmapped, the second one appears under the cursor and therefore gets an
970 * EnterNotify event. */
971 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
972 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
973 if (!state->unmap_now)
975 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
978 /* Push all pending unmaps */
979 x_push_node_unmaps(con);
981 /* save the current stack as old stack */
982 CIRCLEQ_FOREACH(state, &state_head, state) {
983 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
984 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
986 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
987 // DLOG("old stack: 0x%08x\n", state->id);
994 * Raises the specified container in the internal stack of X windows. The
995 * next call to x_push_changes() will make the change visible in X11.
998 void x_raise_con(Con *con) {
1000 state = state_for_frame(con->frame);
1001 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1003 CIRCLEQ_REMOVE(&state_head, state, state);
1004 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1008 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1009 * of the given name. Used for properly tagging the windows for easily spotting
1010 * i3 windows in xwininfo -root -all.
1013 void x_set_name(Con *con, const char *name) {
1014 struct con_state *state;
1016 if ((state = state_for_frame(con->frame)) == NULL) {
1017 ELOG("window state not found\n");
1022 state->name = sstrdup(name);
1026 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1029 void x_set_i3_atoms(void) {
1030 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1031 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1032 current_socketpath);
1033 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1034 strlen(current_configpath), current_configpath);
1035 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1036 strlen(shmlogname), shmlogname);
1040 * Set warp_to coordinates. This will trigger on the next call to
1044 void x_set_warp_to(Rect *rect)
1050 * Applies the given mask to the event mask of every i3 window decoration X11
1051 * window. This is useful to disable EnterNotify while resizing so that focus
1055 void x_mask_event_mask(uint32_t mask) {
1056 uint32_t values[] = { FRAME_EVENT_MASK & mask };
1059 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1061 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);