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 /* 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 xcb_visualid_t visual = XCB_COPY_FROM_PARENT;
100 if (depth != root_depth && depth != XCB_COPY_FROM_PARENT) {
101 visual = get_visualid_by_depth(depth);
102 xcb_colormap_t win_colormap = xcb_generate_id(conn);
103 xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
105 mask |= XCB_CW_BACK_PIXEL;
106 values[0] = root_screen->black_pixel;
108 mask |= XCB_CW_BORDER_PIXEL;
109 values[1] = root_screen->black_pixel;
111 /* our own frames should not be managed */
112 mask |= XCB_CW_OVERRIDE_REDIRECT;
115 /* see include/xcb.h for the FRAME_EVENT_MASK */
116 mask |= XCB_CW_EVENT_MASK;
117 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
119 mask |= XCB_CW_COLORMAP;
120 values[4] = win_colormap;
122 mask = XCB_CW_OVERRIDE_REDIRECT;
125 mask |= XCB_CW_EVENT_MASK;
126 values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
128 mask |= XCB_CW_COLORMAP;
129 values[2] = colormap;
132 Rect dims = { -15, -15, 10, 10 };
133 con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
135 if (depth != root_depth && depth != XCB_COPY_FROM_PARENT)
136 xcb_free_colormap(conn, values[4]);
138 struct con_state *state = scalloc(sizeof(struct con_state));
139 state->id = con->frame;
140 state->mapped = false;
141 state->initial = true;
142 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
143 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
144 DLOG("adding new state for window id 0x%08x\n", state->id);
148 * Re-initializes the associated X window state for this container. You have
149 * to call this when you assign a client to an empty container to ensure that
150 * its state gets updated correctly.
153 void x_reinit(Con *con) {
154 struct con_state *state;
156 if ((state = state_for_frame(con->frame)) == NULL) {
157 ELOG("window state not found\n");
161 DLOG("resetting state %p to initial\n", state);
162 state->initial = true;
163 state->child_mapped = false;
165 memset(&(state->window_rect), 0, sizeof(Rect));
169 * Reparents the child window of the given container (necessary for sticky
170 * containers). The reparenting happens in the next call of x_push_changes().
173 void x_reparent_child(Con *con, Con *old) {
174 struct con_state *state;
175 if ((state = state_for_frame(con->frame)) == NULL) {
176 ELOG("window state for con not found\n");
180 state->need_reparent = true;
181 state->old_frame = old->frame;
185 * Moves a child window from Container src to Container dest.
188 void x_move_win(Con *src, Con *dest) {
189 struct con_state *state_src, *state_dest;
191 if ((state_src = state_for_frame(src->frame)) == NULL) {
192 ELOG("window state for src not found\n");
196 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
197 ELOG("window state for dest not found\n");
201 state_dest->con = state_src->con;
202 state_src->con = NULL;
204 Rect zero = { 0, 0, 0, 0 };
205 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
206 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
207 DLOG("COPYING RECT\n");
212 * Kills the window decoration associated with the given container.
215 void x_con_kill(Con *con) {
218 xcb_destroy_window(conn, con->frame);
219 xcb_free_pixmap(conn, con->pixmap);
220 xcb_free_gc(conn, con->pm_gc);
221 state = state_for_frame(con->frame);
222 CIRCLEQ_REMOVE(&state_head, state, state);
223 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
227 /* Invalidate focused_id to correctly focus new windows with the same ID */
228 focused_id = XCB_NONE;
232 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
235 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
236 xcb_get_property_cookie_t cookie;
237 xcb_icccm_get_wm_protocols_reply_t protocols;
240 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
241 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
244 /* Check if the client’s protocols have the requested atom set */
245 for (uint32_t i = 0; i < protocols.atoms_len; i++)
246 if (protocols.atoms[i] == atom)
249 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
255 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
258 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
259 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
260 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
261 if (kill_window == KILL_WINDOW) {
262 LOG("Killing specific window 0x%08x\n", window);
263 xcb_destroy_window(conn, window);
265 LOG("Killing the X11 client which owns window 0x%08x\n", window);
266 xcb_kill_client(conn, window);
271 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
272 * In order to properly initialize these bytes, we allocate 32 bytes even
273 * though we only need less for an xcb_configure_notify_event_t */
274 void *event = scalloc(32);
275 xcb_client_message_event_t *ev = event;
277 ev->response_type = XCB_CLIENT_MESSAGE;
279 ev->type = A_WM_PROTOCOLS;
281 ev->data.data32[0] = A_WM_DELETE_WINDOW;
282 ev->data.data32[1] = XCB_CURRENT_TIME;
284 LOG("Sending WM_DELETE to the client\n");
285 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
291 * Draws the decoration of the given container onto its parent.
294 void x_draw_decoration(Con *con) {
295 Con *parent = con->parent;
296 bool leaf = con_is_leaf(con);
297 /* This code needs to run for:
299 * • non-leaf containers which are in a stacked/tabbed container
301 * It does not need to run for:
302 * • floating containers (they don’t have a decoration)
305 parent->layout != L_STACKED &&
306 parent->layout != L_TABBED) ||
307 con->type == CT_FLOATING_CON)
310 /* Skip containers whose height is 0 (for example empty dockareas) */
311 if (con->rect.height == 0)
314 /* Skip containers whose pixmap has not yet been created (can happen when
315 * decoration rendering happens recursively for a window for which
316 * x_push_node() was not yet called) */
317 if (leaf && con->pixmap == XCB_NONE)
320 /* 1: build deco_params and compare with cache */
321 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
323 /* find out which colors to use */
325 p->color = &config.client.urgent;
326 else if (con == focused || con_inside_focused(con))
327 p->color = &config.client.focused;
328 else if (con == TAILQ_FIRST(&(parent->focus_head)))
329 p->color = &config.client.focused_inactive;
331 p->color = &config.client.unfocused;
333 p->border_style = con_border_style(con);
335 Rect *r = &(con->rect);
336 Rect *w = &(con->window_rect);
337 p->con_rect = (struct width_height){ r->width, r->height };
338 p->con_window_rect = (struct width_height){ w->width, w->height };
339 p->con_deco_rect = con->deco_rect;
340 p->background = config.client.background;
341 p->con_is_leaf = con_is_leaf(con);
343 if (con->deco_render_params != NULL &&
344 (con->window == NULL || !con->window->name_x_changed) &&
345 !parent->pixmap_recreated &&
346 !con->pixmap_recreated &&
347 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
353 while ((next = TAILQ_NEXT(next, nodes))) {
354 FREE(next->deco_render_params);
357 FREE(con->deco_render_params);
358 con->deco_render_params = p;
360 if (con->window != NULL && con->window->name_x_changed)
361 con->window->name_x_changed = false;
363 parent->pixmap_recreated = false;
364 con->pixmap_recreated = false;
366 /* 2: draw the client.background, but only for the parts around the client_rect */
367 if (con->window != NULL) {
368 xcb_rectangle_t background[] = {
370 { 0, 0, r->width, w->y },
372 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
374 { 0, 0, w->x, r->height },
376 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
379 for (int i = 0; i < 4; i++)
380 DLOG("rect is (%d, %d) with %d x %d\n",
388 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
389 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
392 /* 3: draw a rectangle in border color around the client */
393 if (p->border_style != BS_NONE && p->con_is_leaf) {
394 Rect br = con_border_style_rect(con);
396 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
397 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
398 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);
401 /* These rectangles represents the border around the child window
402 * (left, bottom and right part). We don’t just fill the whole
403 * rectangle because some childs are not freely resizable and we want
404 * their background color to "shine through". */
405 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
406 xcb_rectangle_t borders[] = {
407 { 0, 0, br.x, r->height },
408 { 0, r->height + br.height + br.y, r->width, r->height },
409 { r->width + br.width + br.x, 0, r->width, r->height }
411 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 3, borders);
412 /* 1pixel border needs an additional line at the top */
413 if (p->border_style == BS_1PIXEL) {
414 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
415 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
418 /* Highlight the side of the border at which the next window will be
419 * opened if we are rendering a single window within a split container
420 * (which is undistinguishable from a single window outside a split
421 * container otherwise. */
422 if (TAILQ_NEXT(con, nodes) == NULL &&
423 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
424 con->parent->type != CT_FLOATING_CON) {
425 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator });
426 if (con_orientation(con->parent) == HORIZ)
427 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
428 { r->width + br.width + br.x, 0, r->width, r->height + br.height } });
430 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
431 { br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } });
436 /* if this is a borderless/1pixel window, we don’t need to render the
438 if (p->border_style != BS_NORMAL)
441 /* 4: paint the bar */
442 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
443 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
444 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
446 /* 5: draw two unconnected lines in border color */
447 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
448 Rect *dr = &(con->deco_rect);
449 xcb_segment_t segments[] = {
451 dr->x + dr->width - 1, dr->y },
453 { dr->x + 2, dr->y + dr->height - 1,
454 dr->x + dr->width - 3, dr->y + dr->height - 1 }
456 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
458 /* 6: draw the title */
459 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
460 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
462 struct Window *win = con->window;
463 if (win == NULL || win->name_x == NULL) {
464 /* this is a non-leaf container, we need to make up a good description */
465 // TODO: use a good description instead of just "another container"
466 draw_text("another container", strlen("another container"), false,
467 parent->pixmap, parent->pm_gc,
468 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
469 con->deco_rect.width - 2);
473 int indent_level = 0,
475 Con *il_parent = parent;
476 if (il_parent->layout != L_STACKED) {
478 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
479 if (il_parent->layout == L_STACKED)
481 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
483 il_parent = il_parent->parent;
487 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
488 int indent_px = (indent_level * 5) * indent_mult;
490 draw_text(win->name_x, win->name_len, win->uses_net_wm_name,
491 parent->pixmap, parent->pm_gc,
492 con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y,
493 con->deco_rect.width - 2 - indent_px);
495 /* Since we don’t clip the text at all, it might in some cases be painted
496 * on the border pixels on the right side of a window. Therefore, we draw
497 * the right border again after rendering the text (and the unconnected
498 * lines in border color). */
500 /* Draw a separator line after every tab (except the last one), so that
501 * tabs can be easily distinguished. */
502 if (parent->layout == L_TABBED && TAILQ_NEXT(con, nodes) != NULL) {
503 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
505 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
507 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 4,
509 { dr->x + dr->width - 1, dr->y },
510 { dr->x + dr->width - 1, dr->y + dr->height },
511 { dr->x + dr->width - 2, dr->y },
512 { dr->x + dr->width - 2, dr->y + dr->height }
515 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
516 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
519 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
523 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
524 * because x_push_node uses focus order to recurse (see the comment above)
525 * while drawing the decoration needs to happen in the actual order.
528 void x_deco_recurse(Con *con) {
530 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
531 TAILQ_EMPTY(&(con->floating_head));
532 con_state *state = state_for_frame(con->frame);
535 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
536 x_deco_recurse(current);
538 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
539 x_deco_recurse(current);
542 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
545 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
546 (!leaf || con->mapped))
547 x_draw_decoration(con);
551 * This function pushes the properties of each node of the layout tree to
552 * X11 if they have changed (like the map state, position of the window, …).
553 * It recursively traverses all children of the given node.
556 void x_push_node(Con *con) {
559 Rect rect = con->rect;
561 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
562 state = state_for_frame(con->frame);
564 if (state->name != NULL) {
565 DLOG("pushing name %s for con %p\n", state->name, con);
567 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
568 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
572 if (con->window == NULL) {
573 /* Calculate the height of all window decorations which will be drawn on to
575 uint32_t max_y = 0, max_height = 0;
576 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
577 Rect *dr = &(current->deco_rect);
578 if (dr->y >= max_y && dr->height >= max_height) {
580 max_height = dr->height;
583 rect.height = max_y + max_height;
584 if (rect.height == 0)
588 /* reparent the child window (when the window was moved due to a sticky
590 if (state->need_reparent && con->window != NULL) {
591 DLOG("Reparenting child window\n");
593 /* Temporarily set the event masks to XCB_NONE so that we won’t get
594 * UnmapNotify events (otherwise the handler would close the container).
595 * These events are generated automatically when reparenting. */
596 uint32_t values[] = { XCB_NONE };
597 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
598 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
600 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
602 values[0] = FRAME_EVENT_MASK;
603 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
604 values[0] = CHILD_EVENT_MASK;
605 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
607 state->old_frame = XCB_NONE;
608 state->need_reparent = false;
611 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
612 con, con->window->id, con->ignore_unmap);
615 bool fake_notify = false;
616 /* Set new position if rect changed (and if height > 0) */
617 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
619 /* We first create the new pixmap, then render to it, set it as the
620 * background and only afterwards change the window size. This reduces
623 /* As the pixmap only depends on the size and not on the position, it
624 * is enough to check if width/height have changed. Also, we don’t
625 * create a pixmap at all when the window is actually not visible
627 if ((state->rect.width != rect.width ||
628 state->rect.height != rect.height)) {
629 if (con->pixmap == 0) {
630 con->pixmap = xcb_generate_id(conn);
631 con->pm_gc = xcb_generate_id(conn);
633 xcb_free_pixmap(conn, con->pixmap);
634 xcb_free_gc(conn, con->pm_gc);
637 uint16_t win_depth = root_depth;
639 win_depth = con->window->depth;
641 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
643 /* For the graphics context, we disable GraphicsExposure events.
644 * Those will be sent when a CopyArea request cannot be fulfilled
645 * properly due to parts of the source being unmapped or otherwise
646 * unavailable. Since we always copy from pixmaps to windows, this
647 * is not a concern for us. */
648 uint32_t values[] = { 0 };
649 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
651 con->pixmap_recreated = true;
653 /* Don’t render the decoration for windows inside a stack which are
654 * not visible right now */
656 con->parent->layout != L_STACKED ||
657 TAILQ_FIRST(&(con->parent->focus_head)) == con)
658 /* Render the decoration now to make the correct decoration visible
659 * from the very first moment. Later calls will be cached, so this
660 * doesn’t hurt performance. */
664 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
665 /* flush to ensure that the following commands are sent in a single
666 * buffer and will be processed directly afterwards (the contents of a
667 * window get lost when resizing it, therefore we want to provide it as
668 * fast as possible) */
670 xcb_set_window_rect(conn, con->frame, rect);
671 if (con->pixmap != XCB_NONE)
672 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
675 memcpy(&(state->rect), &rect, sizeof(Rect));
679 /* dito, but for child windows */
680 if (con->window != NULL &&
681 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
682 DLOG("setting window rect (%d, %d, %d, %d)\n",
683 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
684 xcb_set_window_rect(conn, con->window->id, con->window_rect);
685 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
689 /* Map if map state changed, also ensure that the child window
690 * is changed if we are mapped *and* in initial state (meaning the
691 * container was empty before, but now got a child). Unmaps are handled in
692 * x_push_node_unmaps(). */
693 if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
695 xcb_void_cookie_t cookie;
697 if (con->window != NULL) {
698 /* Set WM_STATE_NORMAL because GTK applications don’t want to
699 * drag & drop if we don’t. Also, xprop(1) needs it. */
700 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
701 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
702 A_WM_STATE, A_WM_STATE, 32, 2, data);
706 if (!state->child_mapped && con->window != NULL) {
707 cookie = xcb_map_window(conn, con->window->id);
709 /* We are interested in EnterNotifys as soon as the window is
711 values[0] = CHILD_EVENT_MASK;
712 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
713 DLOG("mapping child window (serial %d)\n", cookie.sequence);
714 state->child_mapped = true;
717 cookie = xcb_map_window(conn, con->frame);
719 values[0] = FRAME_EVENT_MASK;
720 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
722 /* copy the pixmap contents to the frame window immediately after mapping */
723 if (con->pixmap != XCB_NONE)
724 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
727 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
728 state->mapped = con->mapped;
731 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
734 DLOG("Sending fake configure notify\n");
735 fake_absolute_configure_notify(con);
738 /* Handle all children and floating windows of this node. We recurse
739 * in focus order to display the focused client in a stack first when
740 * switching workspaces (reduces flickering). */
741 TAILQ_FOREACH(current, &(con->focus_head), focused)
742 x_push_node(current);
746 * Same idea as in x_push_node(), but this function only unmaps windows. It is
747 * necessary to split this up to handle new fullscreen clients properly: The
748 * new window needs to be mapped and focus needs to be set *before* the
749 * underlying windows are unmapped. Otherwise, focus will revert to the
750 * PointerRoot and will then be set to the new window, generating unnecessary
751 * FocusIn/FocusOut events.
754 static void x_push_node_unmaps(Con *con) {
758 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
759 state = state_for_frame(con->frame);
761 /* map/unmap if map state changed, also ensure that the child window
762 * is changed if we are mapped *and* in initial state (meaning the
763 * container was empty before, but now got a child) */
764 if (state->unmap_now) {
765 xcb_void_cookie_t cookie;
766 if (con->window != NULL) {
767 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
768 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
769 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
770 A_WM_STATE, A_WM_STATE, 32, 2, data);
773 cookie = xcb_unmap_window(conn, con->frame);
774 DLOG("unmapping container (serial %d)\n", cookie.sequence);
775 /* we need to increase ignore_unmap for this container (if it
776 * contains a window) and for every window "under" this one which
777 * contains a window */
778 if (con->window != NULL) {
780 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
782 state->mapped = con->mapped;
785 /* handle all children and floating windows of this node */
786 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
787 x_push_node_unmaps(current);
789 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
790 x_push_node_unmaps(current);
794 * Pushes all changes (state of each node, see x_push_node() and the window
797 * NOTE: We need to push the stack first so that the windows have the correct
798 * stacking order. This is relevant for workspace switching where we map the
799 * windows because mapping may generate EnterNotify events. When they are
800 * generated in the wrong order, this will cause focus problems when switching
804 void x_push_changes(Con *con) {
806 xcb_query_pointer_cookie_t pointercookie;
808 /* If we need to warp later, we request the pointer position as soon as possible */
810 pointercookie = xcb_query_pointer(conn, root);
813 DLOG("-- PUSHING WINDOW STACK --\n");
814 //DLOG("Disabling EnterNotify\n");
815 uint32_t values[1] = { XCB_NONE };
816 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
818 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
820 //DLOG("Done, EnterNotify disabled\n");
821 bool order_changed = false;
822 bool stacking_changed = false;
824 /* count first, necessary to (re)allocate memory for the bottom-to-top
825 * stack afterwards */
827 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
828 if (state->con && state->con->window)
831 if (cnt != btt_stack_num) {
832 btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
836 xcb_window_t *walk = btt_stack;
838 /* X11 correctly represents the stack if we push it from bottom to top */
839 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
840 if (state->con && state->con->window)
841 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
843 //DLOG("stack: 0x%08x\n", state->id);
844 con_state *prev = CIRCLEQ_PREV(state, state);
845 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
846 if (prev != old_prev)
847 order_changed = true;
848 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
849 stacking_changed = true;
850 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
852 mask |= XCB_CONFIG_WINDOW_SIBLING;
853 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
854 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
856 xcb_configure_window(conn, prev->id, mask, values);
858 state->initial = false;
861 /* If we re-stacked something (or a new window appeared), we need to update
862 * the _NET_CLIENT_LIST_STACKING hint */
863 if (stacking_changed)
864 ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
866 DLOG("PUSHING CHANGES\n");
870 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
872 ELOG("Could not query pointer position, not warping pointer\n");
874 int mid_x = warp_to->x + (warp_to->width / 2);
875 int mid_y = warp_to->y + (warp_to->height / 2);
877 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
878 Output *target = get_output_containing(mid_x, mid_y);
879 if (current != target)
880 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
885 //DLOG("Re-enabling EnterNotify\n");
886 values[0] = FRAME_EVENT_MASK;
887 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
889 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
891 //DLOG("Done, EnterNotify re-enabled\n");
895 xcb_window_t to_focus = focused->frame;
896 if (focused->window != NULL)
897 to_focus = focused->window->id;
899 if (focused_id != to_focus) {
900 if (!focused->mapped) {
901 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
902 /* Invalidate focused_id to correctly focus new windows with the same ID */
903 focused_id = XCB_NONE;
905 bool set_focus = true;
906 if (focused->window != NULL &&
907 focused->window->needs_take_focus) {
908 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
909 to_focus, focused, focused->name);
910 send_take_focus(to_focus);
911 set_focus = !focused->window->doesnt_accept_focus;
912 DLOG("set_focus = %d\n", set_focus);
916 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
917 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
918 * no focus change events for our own focus changes. We only want
919 * these generated by the clients. */
920 if (focused->window != NULL) {
921 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
922 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
924 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
925 if (focused->window != NULL) {
926 values[0] = CHILD_EVENT_MASK;
927 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
930 ewmh_update_active_window(to_focus);
933 focused_id = to_focus;
937 if (focused_id == XCB_NONE) {
938 DLOG("Still no window focused, better set focus to the root window\n");
939 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
944 DLOG("ENDING CHANGES\n");
946 /* Disable EnterWindow events for windows which will be unmapped in
947 * x_push_node_unmaps() now. Unmapping windows happens when switching
948 * workspaces. We want to avoid getting EnterNotifies during that phase
949 * because they would screw up our focus. One of these cases is having a
950 * stack with two windows. If the first window is focused and gets
951 * unmapped, the second one appears under the cursor and therefore gets an
952 * EnterNotify event. */
953 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
954 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
955 if (!state->unmap_now)
957 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
960 /* Push all pending unmaps */
961 x_push_node_unmaps(con);
963 /* save the current stack as old stack */
964 CIRCLEQ_FOREACH(state, &state_head, state) {
965 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
966 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
968 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
969 // DLOG("old stack: 0x%08x\n", state->id);
976 * Raises the specified container in the internal stack of X windows. The
977 * next call to x_push_changes() will make the change visible in X11.
980 void x_raise_con(Con *con) {
982 state = state_for_frame(con->frame);
983 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
985 CIRCLEQ_REMOVE(&state_head, state, state);
986 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
990 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
991 * of the given name. Used for properly tagging the windows for easily spotting
992 * i3 windows in xwininfo -root -all.
995 void x_set_name(Con *con, const char *name) {
996 struct con_state *state;
998 if ((state = state_for_frame(con->frame)) == NULL) {
999 ELOG("window state not found\n");
1004 state->name = sstrdup(name);
1008 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1011 void x_set_i3_atoms() {
1012 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1013 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1014 current_socketpath);
1015 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1016 strlen(current_configpath), current_configpath);
1017 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1018 strlen(shmlogname), shmlogname);
1022 * Set warp_to coordinates. This will trigger on the next call to
1026 void x_set_warp_to(Rect *rect)
1032 * Applies the given mask to the event mask of every i3 window decoration X11
1033 * window. This is useful to disable EnterNotify while resizing so that focus
1037 void x_mask_event_mask(uint32_t mask) {
1038 uint32_t values[] = { FRAME_EVENT_MASK & mask };
1041 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1043 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);