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) {
89 /* TODO: maybe create the window when rendering first? we could then even
90 * get the initial geometry right */
95 /* We explicitly set a background color and border color (even though we
96 * don’t even have a border) because the X11 server requires us to when
97 * using 32 bit color depths, see
98 * http://stackoverflow.com/questions/3645632 */
99 mask |= XCB_CW_BACK_PIXEL;
100 values[0] = root_screen->black_pixel;
102 mask |= XCB_CW_BORDER_PIXEL;
103 values[1] = root_screen->black_pixel;
105 /* our own frames should not be managed */
106 mask |= XCB_CW_OVERRIDE_REDIRECT;
109 /* see include/xcb.h for the FRAME_EVENT_MASK */
110 mask |= XCB_CW_EVENT_MASK;
111 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
113 mask |= XCB_CW_COLORMAP;
114 values[4] = colormap;
116 Rect dims = { -15, -15, 10, 10 };
117 con->frame = create_window(conn, dims, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
119 struct con_state *state = scalloc(sizeof(struct con_state));
120 state->id = con->frame;
121 state->mapped = false;
122 state->initial = true;
123 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
124 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
125 DLOG("adding new state for window id 0x%08x\n", state->id);
129 * Re-initializes the associated X window state for this container. You have
130 * to call this when you assign a client to an empty container to ensure that
131 * its state gets updated correctly.
134 void x_reinit(Con *con) {
135 struct con_state *state;
137 if ((state = state_for_frame(con->frame)) == NULL) {
138 ELOG("window state not found\n");
142 DLOG("resetting state %p to initial\n", state);
143 state->initial = true;
144 state->child_mapped = false;
146 memset(&(state->window_rect), 0, sizeof(Rect));
150 * Reparents the child window of the given container (necessary for sticky
151 * containers). The reparenting happens in the next call of x_push_changes().
154 void x_reparent_child(Con *con, Con *old) {
155 struct con_state *state;
156 if ((state = state_for_frame(con->frame)) == NULL) {
157 ELOG("window state for con not found\n");
161 state->need_reparent = true;
162 state->old_frame = old->frame;
166 * Moves a child window from Container src to Container dest.
169 void x_move_win(Con *src, Con *dest) {
170 struct con_state *state_src, *state_dest;
172 if ((state_src = state_for_frame(src->frame)) == NULL) {
173 ELOG("window state for src not found\n");
177 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
178 ELOG("window state for dest not found\n");
182 state_dest->con = state_src->con;
183 state_src->con = NULL;
185 Rect zero = { 0, 0, 0, 0 };
186 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
187 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
188 DLOG("COPYING RECT\n");
193 * Kills the window decoration associated with the given container.
196 void x_con_kill(Con *con) {
199 xcb_destroy_window(conn, con->frame);
200 xcb_free_pixmap(conn, con->pixmap);
201 xcb_free_gc(conn, con->pm_gc);
202 state = state_for_frame(con->frame);
203 CIRCLEQ_REMOVE(&state_head, state, state);
204 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
208 /* Invalidate focused_id to correctly focus new windows with the same ID */
209 focused_id = XCB_NONE;
213 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
216 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
217 xcb_get_property_cookie_t cookie;
218 xcb_icccm_get_wm_protocols_reply_t protocols;
221 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
222 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
225 /* Check if the client’s protocols have the requested atom set */
226 for (uint32_t i = 0; i < protocols.atoms_len; i++)
227 if (protocols.atoms[i] == atom)
230 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
236 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
239 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
240 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
241 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
242 if (kill_window == KILL_WINDOW) {
243 LOG("Killing specific window 0x%08x\n", window);
244 xcb_destroy_window(conn, window);
246 LOG("Killing the X11 client which owns window 0x%08x\n", window);
247 xcb_kill_client(conn, window);
252 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
253 * In order to properly initialize these bytes, we allocate 32 bytes even
254 * though we only need less for an xcb_configure_notify_event_t */
255 void *event = scalloc(32);
256 xcb_client_message_event_t *ev = event;
258 ev->response_type = XCB_CLIENT_MESSAGE;
260 ev->type = A_WM_PROTOCOLS;
262 ev->data.data32[0] = A_WM_DELETE_WINDOW;
263 ev->data.data32[1] = XCB_CURRENT_TIME;
265 LOG("Sending WM_DELETE to the client\n");
266 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
272 * Draws the decoration of the given container onto its parent.
275 void x_draw_decoration(Con *con) {
276 Con *parent = con->parent;
277 bool leaf = con_is_leaf(con);
278 /* This code needs to run for:
280 * • non-leaf containers which are in a stacked/tabbed container
282 * It does not need to run for:
283 * • floating containers (they don’t have a decoration)
286 parent->layout != L_STACKED &&
287 parent->layout != L_TABBED) ||
288 con->type == CT_FLOATING_CON)
291 /* Skip containers whose height is 0 (for example empty dockareas) */
292 if (con->rect.height == 0)
295 /* Skip containers whose pixmap has not yet been created (can happen when
296 * decoration rendering happens recursively for a window for which
297 * x_push_node() was not yet called) */
298 if (leaf && con->pixmap == XCB_NONE)
301 /* 1: build deco_params and compare with cache */
302 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
304 /* find out which colors to use */
306 p->color = &config.client.urgent;
307 else if (con == focused || con_inside_focused(con))
308 p->color = &config.client.focused;
309 else if (con == TAILQ_FIRST(&(parent->focus_head)))
310 p->color = &config.client.focused_inactive;
312 p->color = &config.client.unfocused;
314 p->border_style = con_border_style(con);
316 Rect *r = &(con->rect);
317 Rect *w = &(con->window_rect);
318 p->con_rect = (struct width_height){ r->width, r->height };
319 p->con_window_rect = (struct width_height){ w->width, w->height };
320 p->con_deco_rect = con->deco_rect;
321 p->background = config.client.background;
322 p->con_is_leaf = con_is_leaf(con);
324 if (con->deco_render_params != NULL &&
325 (con->window == NULL || !con->window->name_x_changed) &&
326 !parent->pixmap_recreated &&
327 !con->pixmap_recreated &&
328 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
334 while ((next = TAILQ_NEXT(next, nodes))) {
335 FREE(next->deco_render_params);
338 FREE(con->deco_render_params);
339 con->deco_render_params = p;
341 if (con->window != NULL && con->window->name_x_changed)
342 con->window->name_x_changed = false;
344 parent->pixmap_recreated = false;
345 con->pixmap_recreated = false;
347 /* 2: draw the client.background, but only for the parts around the client_rect */
348 if (con->window != NULL) {
349 xcb_rectangle_t background[] = {
351 { 0, 0, r->width, w->y },
353 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
355 { 0, 0, w->x, r->height },
357 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
360 for (int i = 0; i < 4; i++)
361 DLOG("rect is (%d, %d) with %d x %d\n",
369 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
370 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
373 /* 3: draw a rectangle in border color around the client */
374 if (p->border_style != BS_NONE && p->con_is_leaf) {
375 Rect br = con_border_style_rect(con);
377 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
378 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
379 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);
382 /* These rectangles represents the border around the child window
383 * (left, bottom and right part). We don’t just fill the whole
384 * rectangle because some childs are not freely resizable and we want
385 * their background color to "shine through". */
386 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
387 xcb_rectangle_t borders[] = {
388 { 0, 0, br.x, r->height },
389 { 0, r->height + br.height + br.y, r->width, r->height },
390 { r->width + br.width + br.x, 0, r->width, r->height }
392 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 3, borders);
393 /* 1pixel border needs an additional line at the top */
394 if (p->border_style == BS_1PIXEL) {
395 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
396 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
399 /* Highlight the side of the border at which the next window will be
400 * opened if we are rendering a single window within a split container
401 * (which is undistinguishable from a single window outside a split
402 * container otherwise. */
403 if (TAILQ_NEXT(con, nodes) == NULL &&
404 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
405 con->parent->type != CT_FLOATING_CON) {
406 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator });
407 if (con_orientation(con->parent) == HORIZ)
408 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
409 { r->width + br.width + br.x, 0, r->width, r->height + br.height } });
411 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
412 { br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } });
417 /* if this is a borderless/1pixel window, we don’t need to render the
419 if (p->border_style != BS_NORMAL)
422 /* 4: paint the bar */
423 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
424 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
425 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
427 /* 5: draw two unconnected lines in border color */
428 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
429 Rect *dr = &(con->deco_rect);
430 xcb_segment_t segments[] = {
432 dr->x + dr->width - 1, dr->y },
434 { dr->x + 2, dr->y + dr->height - 1,
435 dr->x + dr->width - 3, dr->y + dr->height - 1 }
437 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
439 /* 6: draw the title */
440 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
441 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
443 struct Window *win = con->window;
444 if (win == NULL || win->name_x == NULL) {
445 /* this is a non-leaf container, we need to make up a good description */
446 // TODO: use a good description instead of just "another container"
447 draw_text("another container", strlen("another container"), false,
448 parent->pixmap, parent->pm_gc,
449 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
450 con->deco_rect.width - 2);
454 int indent_level = 0,
456 Con *il_parent = parent;
457 if (il_parent->layout != L_STACKED) {
459 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
460 if (il_parent->layout == L_STACKED)
462 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
464 il_parent = il_parent->parent;
468 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
469 int indent_px = (indent_level * 5) * indent_mult;
471 draw_text(win->name_x, win->name_len, win->uses_net_wm_name,
472 parent->pixmap, parent->pm_gc,
473 con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y,
474 con->deco_rect.width - 2 - indent_px);
476 /* Since we don’t clip the text at all, it might in some cases be painted
477 * on the border pixels on the right side of a window. Therefore, we draw
478 * the right border again after rendering the text (and the unconnected
479 * lines in border color). */
481 /* Draw a separator line after every tab (except the last one), so that
482 * tabs can be easily distinguished. */
483 if (parent->layout == L_TABBED && TAILQ_NEXT(con, nodes) != NULL) {
484 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
486 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
488 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 4,
490 { dr->x + dr->width - 1, dr->y },
491 { dr->x + dr->width - 1, dr->y + dr->height },
492 { dr->x + dr->width - 2, dr->y },
493 { dr->x + dr->width - 2, dr->y + dr->height }
496 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
497 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
500 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
504 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
505 * because x_push_node uses focus order to recurse (see the comment above)
506 * while drawing the decoration needs to happen in the actual order.
509 void x_deco_recurse(Con *con) {
511 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
512 TAILQ_EMPTY(&(con->floating_head));
513 con_state *state = state_for_frame(con->frame);
516 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
517 x_deco_recurse(current);
519 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
520 x_deco_recurse(current);
523 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
526 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
527 (!leaf || con->mapped))
528 x_draw_decoration(con);
532 * This function pushes the properties of each node of the layout tree to
533 * X11 if they have changed (like the map state, position of the window, …).
534 * It recursively traverses all children of the given node.
537 void x_push_node(Con *con) {
540 Rect rect = con->rect;
542 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
543 state = state_for_frame(con->frame);
545 if (state->name != NULL) {
546 DLOG("pushing name %s for con %p\n", state->name, con);
548 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
549 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
553 if (con->window == NULL) {
554 /* Calculate the height of all window decorations which will be drawn on to
556 uint32_t max_y = 0, max_height = 0;
557 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
558 Rect *dr = &(current->deco_rect);
559 if (dr->y >= max_y && dr->height >= max_height) {
561 max_height = dr->height;
564 rect.height = max_y + max_height;
565 if (rect.height == 0)
569 /* reparent the child window (when the window was moved due to a sticky
571 if (state->need_reparent && con->window != NULL) {
572 DLOG("Reparenting child window\n");
574 /* Temporarily set the event masks to XCB_NONE so that we won’t get
575 * UnmapNotify events (otherwise the handler would close the container).
576 * These events are generated automatically when reparenting. */
577 uint32_t values[] = { XCB_NONE };
578 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
579 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
581 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
583 values[0] = FRAME_EVENT_MASK;
584 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
585 values[0] = CHILD_EVENT_MASK;
586 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
588 state->old_frame = XCB_NONE;
589 state->need_reparent = false;
592 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
593 con, con->window->id, con->ignore_unmap);
596 bool fake_notify = false;
597 /* Set new position if rect changed (and if height > 0) */
598 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
600 /* We first create the new pixmap, then render to it, set it as the
601 * background and only afterwards change the window size. This reduces
604 /* As the pixmap only depends on the size and not on the position, it
605 * is enough to check if width/height have changed. Also, we don’t
606 * create a pixmap at all when the window is actually not visible
608 if ((state->rect.width != rect.width ||
609 state->rect.height != rect.height)) {
610 if (con->pixmap == 0) {
611 con->pixmap = xcb_generate_id(conn);
612 con->pm_gc = xcb_generate_id(conn);
614 xcb_free_pixmap(conn, con->pixmap);
615 xcb_free_gc(conn, con->pm_gc);
617 xcb_create_pixmap(conn, root_depth, con->pixmap, con->frame, rect.width, rect.height);
618 /* For the graphics context, we disable GraphicsExposure events.
619 * Those will be sent when a CopyArea request cannot be fulfilled
620 * properly due to parts of the source being unmapped or otherwise
621 * unavailable. Since we always copy from pixmaps to windows, this
622 * is not a concern for us. */
623 uint32_t values[] = { 0 };
624 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
626 con->pixmap_recreated = true;
628 /* Don’t render the decoration for windows inside a stack which are
629 * not visible right now */
631 con->parent->layout != L_STACKED ||
632 TAILQ_FIRST(&(con->parent->focus_head)) == con)
633 /* Render the decoration now to make the correct decoration visible
634 * from the very first moment. Later calls will be cached, so this
635 * doesn’t hurt performance. */
639 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
640 /* flush to ensure that the following commands are sent in a single
641 * buffer and will be processed directly afterwards (the contents of a
642 * window get lost when resizing it, therefore we want to provide it as
643 * fast as possible) */
645 xcb_set_window_rect(conn, con->frame, rect);
646 if (con->pixmap != XCB_NONE)
647 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
650 memcpy(&(state->rect), &rect, sizeof(Rect));
654 /* dito, but for child windows */
655 if (con->window != NULL &&
656 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
657 DLOG("setting window rect (%d, %d, %d, %d)\n",
658 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
659 xcb_set_window_rect(conn, con->window->id, con->window_rect);
660 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
664 /* Map if map state changed, also ensure that the child window
665 * is changed if we are mapped *and* in initial state (meaning the
666 * container was empty before, but now got a child). Unmaps are handled in
667 * x_push_node_unmaps(). */
668 if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
670 xcb_void_cookie_t cookie;
672 if (con->window != NULL) {
673 /* Set WM_STATE_NORMAL because GTK applications don’t want to
674 * drag & drop if we don’t. Also, xprop(1) needs it. */
675 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
676 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
677 A_WM_STATE, A_WM_STATE, 32, 2, data);
681 if (!state->child_mapped && con->window != NULL) {
682 cookie = xcb_map_window(conn, con->window->id);
684 /* We are interested in EnterNotifys as soon as the window is
686 values[0] = CHILD_EVENT_MASK;
687 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
688 DLOG("mapping child window (serial %d)\n", cookie.sequence);
689 state->child_mapped = true;
692 cookie = xcb_map_window(conn, con->frame);
694 values[0] = FRAME_EVENT_MASK;
695 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
697 /* copy the pixmap contents to the frame window immediately after mapping */
698 if (con->pixmap != XCB_NONE)
699 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
702 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
703 state->mapped = con->mapped;
706 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
709 DLOG("Sending fake configure notify\n");
710 fake_absolute_configure_notify(con);
713 /* Handle all children and floating windows of this node. We recurse
714 * in focus order to display the focused client in a stack first when
715 * switching workspaces (reduces flickering). */
716 TAILQ_FOREACH(current, &(con->focus_head), focused)
717 x_push_node(current);
721 * Same idea as in x_push_node(), but this function only unmaps windows. It is
722 * necessary to split this up to handle new fullscreen clients properly: The
723 * new window needs to be mapped and focus needs to be set *before* the
724 * underlying windows are unmapped. Otherwise, focus will revert to the
725 * PointerRoot and will then be set to the new window, generating unnecessary
726 * FocusIn/FocusOut events.
729 static void x_push_node_unmaps(Con *con) {
733 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
734 state = state_for_frame(con->frame);
736 /* map/unmap if map state changed, also ensure that the child window
737 * is changed if we are mapped *and* in initial state (meaning the
738 * container was empty before, but now got a child) */
739 if (state->unmap_now) {
740 xcb_void_cookie_t cookie;
741 if (con->window != NULL) {
742 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
743 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
744 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
745 A_WM_STATE, A_WM_STATE, 32, 2, data);
748 cookie = xcb_unmap_window(conn, con->frame);
749 DLOG("unmapping container (serial %d)\n", cookie.sequence);
750 /* we need to increase ignore_unmap for this container (if it
751 * contains a window) and for every window "under" this one which
752 * contains a window */
753 if (con->window != NULL) {
755 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
757 state->mapped = con->mapped;
760 /* handle all children and floating windows of this node */
761 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
762 x_push_node_unmaps(current);
764 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
765 x_push_node_unmaps(current);
769 * Pushes all changes (state of each node, see x_push_node() and the window
772 * NOTE: We need to push the stack first so that the windows have the correct
773 * stacking order. This is relevant for workspace switching where we map the
774 * windows because mapping may generate EnterNotify events. When they are
775 * generated in the wrong order, this will cause focus problems when switching
779 void x_push_changes(Con *con) {
781 xcb_query_pointer_cookie_t pointercookie;
783 /* If we need to warp later, we request the pointer position as soon as possible */
785 pointercookie = xcb_query_pointer(conn, root);
788 DLOG("-- PUSHING WINDOW STACK --\n");
789 //DLOG("Disabling EnterNotify\n");
790 uint32_t values[1] = { XCB_NONE };
791 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
793 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
795 //DLOG("Done, EnterNotify disabled\n");
796 bool order_changed = false;
797 bool stacking_changed = false;
799 /* count first, necessary to (re)allocate memory for the bottom-to-top
800 * stack afterwards */
802 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
803 if (state->con && state->con->window)
806 if (cnt != btt_stack_num) {
807 btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
811 xcb_window_t *walk = btt_stack;
813 /* X11 correctly represents the stack if we push it from bottom to top */
814 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
815 if (state->con && state->con->window)
816 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
818 //DLOG("stack: 0x%08x\n", state->id);
819 con_state *prev = CIRCLEQ_PREV(state, state);
820 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
821 if (prev != old_prev)
822 order_changed = true;
823 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
824 stacking_changed = true;
825 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
827 mask |= XCB_CONFIG_WINDOW_SIBLING;
828 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
829 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
831 xcb_configure_window(conn, prev->id, mask, values);
833 state->initial = false;
836 /* If we re-stacked something (or a new window appeared), we need to update
837 * the _NET_CLIENT_LIST_STACKING hint */
838 if (stacking_changed)
839 ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
841 DLOG("PUSHING CHANGES\n");
845 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
847 ELOG("Could not query pointer position, not warping pointer\n");
849 int mid_x = warp_to->x + (warp_to->width / 2);
850 int mid_y = warp_to->y + (warp_to->height / 2);
852 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
853 Output *target = get_output_containing(mid_x, mid_y);
854 if (current != target)
855 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
860 //DLOG("Re-enabling EnterNotify\n");
861 values[0] = FRAME_EVENT_MASK;
862 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
864 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
866 //DLOG("Done, EnterNotify re-enabled\n");
870 xcb_window_t to_focus = focused->frame;
871 if (focused->window != NULL)
872 to_focus = focused->window->id;
874 if (focused_id != to_focus) {
875 if (!focused->mapped) {
876 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
877 /* Invalidate focused_id to correctly focus new windows with the same ID */
878 focused_id = XCB_NONE;
880 bool set_focus = true;
881 if (focused->window != NULL &&
882 focused->window->needs_take_focus) {
883 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
884 to_focus, focused, focused->name);
885 send_take_focus(to_focus);
886 set_focus = !focused->window->doesnt_accept_focus;
887 DLOG("set_focus = %d\n", set_focus);
891 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
892 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
893 * no focus change events for our own focus changes. We only want
894 * these generated by the clients. */
895 if (focused->window != NULL) {
896 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
897 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
899 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
900 if (focused->window != NULL) {
901 values[0] = CHILD_EVENT_MASK;
902 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
905 ewmh_update_active_window(to_focus);
908 focused_id = to_focus;
912 if (focused_id == XCB_NONE) {
913 DLOG("Still no window focused, better set focus to the root window\n");
914 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
919 DLOG("ENDING CHANGES\n");
921 /* Disable EnterWindow events for windows which will be unmapped in
922 * x_push_node_unmaps() now. Unmapping windows happens when switching
923 * workspaces. We want to avoid getting EnterNotifies during that phase
924 * because they would screw up our focus. One of these cases is having a
925 * stack with two windows. If the first window is focused and gets
926 * unmapped, the second one appears under the cursor and therefore gets an
927 * EnterNotify event. */
928 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
929 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
930 if (!state->unmap_now)
932 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
935 /* Push all pending unmaps */
936 x_push_node_unmaps(con);
938 /* save the current stack as old stack */
939 CIRCLEQ_FOREACH(state, &state_head, state) {
940 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
941 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
943 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
944 // DLOG("old stack: 0x%08x\n", state->id);
951 * Raises the specified container in the internal stack of X windows. The
952 * next call to x_push_changes() will make the change visible in X11.
955 void x_raise_con(Con *con) {
957 state = state_for_frame(con->frame);
958 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
960 CIRCLEQ_REMOVE(&state_head, state, state);
961 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
965 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
966 * of the given name. Used for properly tagging the windows for easily spotting
967 * i3 windows in xwininfo -root -all.
970 void x_set_name(Con *con, const char *name) {
971 struct con_state *state;
973 if ((state = state_for_frame(con->frame)) == NULL) {
974 ELOG("window state not found\n");
979 state->name = sstrdup(name);
983 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
986 void x_set_i3_atoms() {
987 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
988 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
990 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
991 strlen(current_configpath), current_configpath);
992 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
993 strlen(shmlogname), shmlogname);
997 * Set warp_to coordinates. This will trigger on the next call to
1001 void x_set_warp_to(Rect *rect)
1007 * Applies the given mask to the event mask of every i3 window decoration X11
1008 * window. This is useful to disable EnterNotify while resizing so that focus
1012 void x_mask_event_mask(uint32_t mask) {
1013 uint32_t values[] = { FRAME_EVENT_MASK & mask };
1016 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1018 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);