2 #define I3__FILE__ "x.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
9 * x.c: Interface to X11, transfers our in-memory state to X11 (see also
10 * render.c). Basically a big state machine.
15 /* Stores the X11 window ID of the currently focused window */
16 xcb_window_t focused_id = XCB_NONE;
18 /* The bottom-to-top window stack of all windows which are managed by i3.
19 * Used for x_get_window_stack(). */
20 static xcb_window_t *btt_stack;
21 static int btt_stack_num;
23 /* Stores coordinates to warp mouse pointer to if set */
27 * Describes the X11 state we may modify (map state, position, window stack).
28 * There is one entry per container. The state represents the current situation
29 * as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
30 * which represents the order that will be pushed to X11, while old_state_head
31 * represents the current order). It will be updated in x_push_changes().
34 typedef struct con_state {
40 /** The con for which this state is. */
43 /* For reparenting, we have a flag (need_reparent) and the X ID of the old
44 * frame this window was in. The latter is necessary because we need to
45 * ignore UnmapNotify events (by changing the window event mask). */
47 xcb_window_t old_frame;
56 CIRCLEQ_ENTRY(con_state) state;
57 CIRCLEQ_ENTRY(con_state) old_state;
60 CIRCLEQ_HEAD(state_head, con_state) state_head =
61 CIRCLEQ_HEAD_INITIALIZER(state_head);
63 CIRCLEQ_HEAD(old_state_head, con_state) old_state_head =
64 CIRCLEQ_HEAD_INITIALIZER(old_state_head);
67 * Returns the container state for the given frame. This function always
68 * returns a container state (otherwise, there is a bug in the code and the
69 * container state of a container for which x_con_init() was not called was
73 static con_state *state_for_frame(xcb_window_t window) {
75 CIRCLEQ_FOREACH(state, &state_head, state)
76 if (state->id == window)
79 /* TODO: better error handling? */
80 ELOG("No state found\n");
86 * Initializes the X11 part for the given container. Called exactly once for
87 * every container from con_new().
90 void x_con_init(Con *con, uint16_t depth) {
91 /* TODO: maybe create the window when rendering first? we could then even
92 * get the initial geometry right */
97 xcb_visualid_t visual = XCB_COPY_FROM_PARENT;
98 xcb_colormap_t win_colormap = XCB_NONE;
99 if (depth != root_depth && depth != XCB_COPY_FROM_PARENT) {
100 /* For custom visuals, we need to create a colormap before creating
101 * this window. It will be freed directly after creating the window. */
102 visual = get_visualid_by_depth(depth);
103 win_colormap = xcb_generate_id(conn);
104 xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
106 /* We explicitly set a background color and border color (even though we
107 * don’t even have a border) because the X11 server requires us to when
108 * using 32 bit color depths, see
109 * http://stackoverflow.com/questions/3645632 */
110 mask |= XCB_CW_BACK_PIXEL;
111 values[0] = root_screen->black_pixel;
113 mask |= XCB_CW_BORDER_PIXEL;
114 values[1] = root_screen->black_pixel;
116 /* our own frames should not be managed */
117 mask |= XCB_CW_OVERRIDE_REDIRECT;
120 /* see include/xcb.h for the FRAME_EVENT_MASK */
121 mask |= XCB_CW_EVENT_MASK;
122 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
124 mask |= XCB_CW_COLORMAP;
125 values[4] = win_colormap;
127 /* our own frames should not be managed */
128 mask = XCB_CW_OVERRIDE_REDIRECT;
131 /* see include/xcb.h for the FRAME_EVENT_MASK */
132 mask |= XCB_CW_EVENT_MASK;
133 values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
135 mask |= XCB_CW_COLORMAP;
136 values[2] = colormap;
139 Rect dims = { -15, -15, 10, 10 };
140 con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
142 if (win_colormap != XCB_NONE)
143 xcb_free_colormap(conn, win_colormap);
145 struct con_state *state = scalloc(sizeof(struct con_state));
146 state->id = con->frame;
147 state->mapped = false;
148 state->initial = true;
149 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
150 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
151 DLOG("adding new state for window id 0x%08x\n", state->id);
155 * Re-initializes the associated X window state for this container. You have
156 * to call this when you assign a client to an empty container to ensure that
157 * its state gets updated correctly.
160 void x_reinit(Con *con) {
161 struct con_state *state;
163 if ((state = state_for_frame(con->frame)) == NULL) {
164 ELOG("window state not found\n");
168 DLOG("resetting state %p to initial\n", state);
169 state->initial = true;
170 state->child_mapped = false;
172 memset(&(state->window_rect), 0, sizeof(Rect));
176 * Reparents the child window of the given container (necessary for sticky
177 * containers). The reparenting happens in the next call of x_push_changes().
180 void x_reparent_child(Con *con, Con *old) {
181 struct con_state *state;
182 if ((state = state_for_frame(con->frame)) == NULL) {
183 ELOG("window state for con not found\n");
187 state->need_reparent = true;
188 state->old_frame = old->frame;
192 * Moves a child window from Container src to Container dest.
195 void x_move_win(Con *src, Con *dest) {
196 struct con_state *state_src, *state_dest;
198 if ((state_src = state_for_frame(src->frame)) == NULL) {
199 ELOG("window state for src not found\n");
203 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
204 ELOG("window state for dest not found\n");
208 state_dest->con = state_src->con;
209 state_src->con = NULL;
211 Rect zero = { 0, 0, 0, 0 };
212 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
213 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
214 DLOG("COPYING RECT\n");
219 * Kills the window decoration associated with the given container.
222 void x_con_kill(Con *con) {
225 xcb_destroy_window(conn, con->frame);
226 xcb_free_pixmap(conn, con->pixmap);
227 xcb_free_gc(conn, con->pm_gc);
228 state = state_for_frame(con->frame);
229 CIRCLEQ_REMOVE(&state_head, state, state);
230 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
234 /* Invalidate focused_id to correctly focus new windows with the same ID */
235 focused_id = XCB_NONE;
239 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
242 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
243 xcb_get_property_cookie_t cookie;
244 xcb_icccm_get_wm_protocols_reply_t protocols;
247 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
248 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
251 /* Check if the client’s protocols have the requested atom set */
252 for (uint32_t i = 0; i < protocols.atoms_len; i++)
253 if (protocols.atoms[i] == atom)
256 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
262 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
265 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
266 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
267 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
268 if (kill_window == KILL_WINDOW) {
269 LOG("Killing specific window 0x%08x\n", window);
270 xcb_destroy_window(conn, window);
272 LOG("Killing the X11 client which owns window 0x%08x\n", window);
273 xcb_kill_client(conn, window);
278 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
279 * In order to properly initialize these bytes, we allocate 32 bytes even
280 * though we only need less for an xcb_configure_notify_event_t */
281 void *event = scalloc(32);
282 xcb_client_message_event_t *ev = event;
284 ev->response_type = XCB_CLIENT_MESSAGE;
286 ev->type = A_WM_PROTOCOLS;
288 ev->data.data32[0] = A_WM_DELETE_WINDOW;
289 ev->data.data32[1] = XCB_CURRENT_TIME;
291 LOG("Sending WM_DELETE to the client\n");
292 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
298 * Draws the decoration of the given container onto its parent.
301 void x_draw_decoration(Con *con) {
302 Con *parent = con->parent;
303 bool leaf = con_is_leaf(con);
305 /* This code needs to run for:
307 * • non-leaf containers which are in a stacked/tabbed container
309 * It does not need to run for:
310 * • direct children of outputs or dockareas
311 * • floating containers (they don’t have a decoration)
314 parent->layout != L_STACKED &&
315 parent->layout != L_TABBED) ||
316 parent->type == CT_OUTPUT ||
317 parent->type == CT_DOCKAREA ||
318 con->type == CT_FLOATING_CON)
321 /* Skip containers whose height is 0 (for example empty dockareas) */
322 if (con->rect.height == 0)
325 /* Skip containers whose pixmap has not yet been created (can happen when
326 * decoration rendering happens recursively for a window for which
327 * x_push_node() was not yet called) */
328 if (leaf && con->pixmap == XCB_NONE)
331 /* 1: build deco_params and compare with cache */
332 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
334 /* find out which colors to use */
336 p->color = &config.client.urgent;
337 else if (con == focused || con_inside_focused(con))
338 p->color = &config.client.focused;
339 else if (con == TAILQ_FIRST(&(parent->focus_head)))
340 p->color = &config.client.focused_inactive;
342 p->color = &config.client.unfocused;
344 p->border_style = con_border_style(con);
346 Rect *r = &(con->rect);
347 Rect *w = &(con->window_rect);
348 p->con_rect = (struct width_height){ r->width, r->height };
349 p->con_window_rect = (struct width_height){ w->width, w->height };
350 p->con_deco_rect = con->deco_rect;
351 p->background = config.client.background;
352 p->con_is_leaf = con_is_leaf(con);
354 if (con->deco_render_params != NULL &&
355 (con->window == NULL || !con->window->name_x_changed) &&
356 !parent->pixmap_recreated &&
357 !con->pixmap_recreated &&
358 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
364 while ((next = TAILQ_NEXT(next, nodes))) {
365 FREE(next->deco_render_params);
368 FREE(con->deco_render_params);
369 con->deco_render_params = p;
371 if (con->window != NULL && con->window->name_x_changed)
372 con->window->name_x_changed = false;
374 parent->pixmap_recreated = false;
375 con->pixmap_recreated = false;
377 /* 2: draw the client.background, but only for the parts around the client_rect */
378 if (con->window != NULL) {
379 xcb_rectangle_t background[] = {
381 { 0, 0, r->width, w->y },
383 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
385 { 0, 0, w->x, r->height },
387 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
390 for (int i = 0; i < 4; i++)
391 DLOG("rect is (%d, %d) with %d x %d\n",
399 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
400 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
403 /* 3: draw a rectangle in border color around the client */
404 if (p->border_style != BS_NONE && p->con_is_leaf) {
405 /* We might hide some borders adjacent to the screen-edge */
406 adjacent_t borders_to_hide = ADJ_NONE;
407 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
409 Rect br = con_border_style_rect(con);
411 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
412 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
413 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);
416 /* These rectangles represents the border around the child window
417 * (left, bottom and right part). We don’t just fill the whole
418 * rectangle because some childs are not freely resizable and we want
419 * their background color to "shine through". */
420 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
421 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
422 xcb_rectangle_t leftline = { 0, 0, br.x, r->height };
423 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
425 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
426 xcb_rectangle_t rightline = { r->width + br.width + br.x, 0, r->width, r->height };
427 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
429 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
430 xcb_rectangle_t bottomline = { 0, r->height + br.height + br.y, r->width, r->height };
431 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
433 /* 1pixel border needs an additional line at the top */
434 if (p->border_style == BS_1PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
435 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
436 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
439 /* Highlight the side of the border at which the next window will be
440 * opened if we are rendering a single window within a split container
441 * (which is undistinguishable from a single window outside a split
442 * container otherwise. */
443 if (TAILQ_NEXT(con, nodes) == NULL &&
444 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
445 con->parent->type != CT_FLOATING_CON) {
446 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator });
447 if (con_orientation(con->parent) == HORIZ)
448 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
449 { r->width + br.width + br.x, 0, r->width, r->height + br.height } });
451 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
452 { br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } });
457 /* if this is a borderless/1pixel window, we don’t need to render the
459 if (p->border_style != BS_NORMAL)
462 /* 4: paint the bar */
463 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
464 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
465 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
467 /* 5: draw two unconnected lines in border color */
468 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
469 Rect *dr = &(con->deco_rect);
470 xcb_segment_t segments[] = {
472 dr->x + dr->width - 1, dr->y },
474 { dr->x + 2, dr->y + dr->height - 1,
475 dr->x + dr->width - 3, dr->y + dr->height - 1 }
477 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
479 /* 6: draw the title */
480 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
481 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
483 struct Window *win = con->window;
485 /* we have a split container which gets a representation
486 * of its children as title
489 char *tree = con_get_tree_representation(con);
490 sasprintf(&title, "i3: %s", tree);
493 draw_text_ascii(title,
494 parent->pixmap, parent->pm_gc,
495 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
496 con->deco_rect.width - 2);
502 if (win->name == NULL)
505 int indent_level = 0,
507 Con *il_parent = parent;
508 if (il_parent->layout != L_STACKED) {
510 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
511 if (il_parent->layout == L_STACKED)
513 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
515 il_parent = il_parent->parent;
519 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
520 int indent_px = (indent_level * 5) * indent_mult;
523 parent->pixmap, parent->pm_gc,
524 con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y,
525 con->deco_rect.width - 2 - indent_px);
527 /* Since we don’t clip the text at all, it might in some cases be painted
528 * on the border pixels on the right side of a window. Therefore, we draw
529 * the right border again after rendering the text (and the unconnected
530 * lines in border color). */
532 /* Draw a separator line after every tab (except the last one), so that
533 * tabs can be easily distinguished. */
534 if (parent->layout == L_TABBED && TAILQ_NEXT(con, nodes) != NULL) {
535 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
537 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
539 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 4,
541 { dr->x + dr->width - 1, dr->y },
542 { dr->x + dr->width - 1, dr->y + dr->height },
543 { dr->x + dr->width - 2, dr->y },
544 { dr->x + dr->width - 2, dr->y + dr->height }
547 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
548 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
551 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
555 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
556 * because x_push_node uses focus order to recurse (see the comment above)
557 * while drawing the decoration needs to happen in the actual order.
560 void x_deco_recurse(Con *con) {
562 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
563 TAILQ_EMPTY(&(con->floating_head));
564 con_state *state = state_for_frame(con->frame);
567 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
568 x_deco_recurse(current);
570 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
571 x_deco_recurse(current);
574 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
577 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
578 (!leaf || con->mapped))
579 x_draw_decoration(con);
583 * This function pushes the properties of each node of the layout tree to
584 * X11 if they have changed (like the map state, position of the window, …).
585 * It recursively traverses all children of the given node.
588 void x_push_node(Con *con) {
591 Rect rect = con->rect;
593 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
594 state = state_for_frame(con->frame);
596 if (state->name != NULL) {
597 DLOG("pushing name %s for con %p\n", state->name, con);
599 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
600 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
604 if (con->window == NULL) {
605 /* Calculate the height of all window decorations which will be drawn on to
607 uint32_t max_y = 0, max_height = 0;
608 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
609 Rect *dr = &(current->deco_rect);
610 if (dr->y >= max_y && dr->height >= max_height) {
612 max_height = dr->height;
615 rect.height = max_y + max_height;
616 if (rect.height == 0)
620 /* reparent the child window (when the window was moved due to a sticky
622 if (state->need_reparent && con->window != NULL) {
623 DLOG("Reparenting child window\n");
625 /* Temporarily set the event masks to XCB_NONE so that we won’t get
626 * UnmapNotify events (otherwise the handler would close the container).
627 * These events are generated automatically when reparenting. */
628 uint32_t values[] = { XCB_NONE };
629 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
630 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
632 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
634 values[0] = FRAME_EVENT_MASK;
635 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
636 values[0] = CHILD_EVENT_MASK;
637 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
639 state->old_frame = XCB_NONE;
640 state->need_reparent = false;
643 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
644 con, con->window->id, con->ignore_unmap);
647 bool fake_notify = false;
648 /* Set new position if rect changed (and if height > 0) */
649 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
651 /* We first create the new pixmap, then render to it, set it as the
652 * background and only afterwards change the window size. This reduces
655 /* As the pixmap only depends on the size and not on the position, it
656 * is enough to check if width/height have changed. Also, we don’t
657 * create a pixmap at all when the window is actually not visible
659 if ((state->rect.width != rect.width ||
660 state->rect.height != rect.height)) {
661 if (con->pixmap == 0) {
662 con->pixmap = xcb_generate_id(conn);
663 con->pm_gc = xcb_generate_id(conn);
665 xcb_free_pixmap(conn, con->pixmap);
666 xcb_free_gc(conn, con->pm_gc);
669 uint16_t win_depth = root_depth;
671 win_depth = con->window->depth;
673 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
675 /* For the graphics context, we disable GraphicsExposure events.
676 * Those will be sent when a CopyArea request cannot be fulfilled
677 * properly due to parts of the source being unmapped or otherwise
678 * unavailable. Since we always copy from pixmaps to windows, this
679 * is not a concern for us. */
680 uint32_t values[] = { 0 };
681 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
683 con->pixmap_recreated = true;
685 /* Don’t render the decoration for windows inside a stack which are
686 * not visible right now */
688 con->parent->layout != L_STACKED ||
689 TAILQ_FIRST(&(con->parent->focus_head)) == con)
690 /* Render the decoration now to make the correct decoration visible
691 * from the very first moment. Later calls will be cached, so this
692 * doesn’t hurt performance. */
696 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
697 /* flush to ensure that the following commands are sent in a single
698 * buffer and will be processed directly afterwards (the contents of a
699 * window get lost when resizing it, therefore we want to provide it as
700 * fast as possible) */
702 xcb_set_window_rect(conn, con->frame, rect);
703 if (con->pixmap != XCB_NONE)
704 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
707 memcpy(&(state->rect), &rect, sizeof(Rect));
711 /* dito, but for child windows */
712 if (con->window != NULL &&
713 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
714 DLOG("setting window rect (%d, %d, %d, %d)\n",
715 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
716 xcb_set_window_rect(conn, con->window->id, con->window_rect);
717 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
721 /* Map if map state changed, also ensure that the child window
722 * is changed if we are mapped *and* in initial state (meaning the
723 * container was empty before, but now got a child). Unmaps are handled in
724 * x_push_node_unmaps(). */
725 if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
727 xcb_void_cookie_t cookie;
729 if (con->window != NULL) {
730 /* Set WM_STATE_NORMAL because GTK applications don’t want to
731 * drag & drop if we don’t. Also, xprop(1) needs it. */
732 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
733 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
734 A_WM_STATE, A_WM_STATE, 32, 2, data);
738 if (!state->child_mapped && con->window != NULL) {
739 cookie = xcb_map_window(conn, con->window->id);
741 /* We are interested in EnterNotifys as soon as the window is
743 values[0] = CHILD_EVENT_MASK;
744 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
745 DLOG("mapping child window (serial %d)\n", cookie.sequence);
746 state->child_mapped = true;
749 cookie = xcb_map_window(conn, con->frame);
751 values[0] = FRAME_EVENT_MASK;
752 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
754 /* copy the pixmap contents to the frame window immediately after mapping */
755 if (con->pixmap != XCB_NONE)
756 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
759 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
760 state->mapped = con->mapped;
763 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
766 DLOG("Sending fake configure notify\n");
767 fake_absolute_configure_notify(con);
770 /* Handle all children and floating windows of this node. We recurse
771 * in focus order to display the focused client in a stack first when
772 * switching workspaces (reduces flickering). */
773 TAILQ_FOREACH(current, &(con->focus_head), focused)
774 x_push_node(current);
778 * Same idea as in x_push_node(), but this function only unmaps windows. It is
779 * necessary to split this up to handle new fullscreen clients properly: The
780 * new window needs to be mapped and focus needs to be set *before* the
781 * underlying windows are unmapped. Otherwise, focus will revert to the
782 * PointerRoot and will then be set to the new window, generating unnecessary
783 * FocusIn/FocusOut events.
786 static void x_push_node_unmaps(Con *con) {
790 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
791 state = state_for_frame(con->frame);
793 /* map/unmap if map state changed, also ensure that the child window
794 * is changed if we are mapped *and* in initial state (meaning the
795 * container was empty before, but now got a child) */
796 if (state->unmap_now) {
797 xcb_void_cookie_t cookie;
798 if (con->window != NULL) {
799 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
800 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
801 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
802 A_WM_STATE, A_WM_STATE, 32, 2, data);
805 cookie = xcb_unmap_window(conn, con->frame);
806 DLOG("unmapping container (serial %d)\n", cookie.sequence);
807 /* we need to increase ignore_unmap for this container (if it
808 * contains a window) and for every window "under" this one which
809 * contains a window */
810 if (con->window != NULL) {
812 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
814 state->mapped = con->mapped;
817 /* handle all children and floating windows of this node */
818 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
819 x_push_node_unmaps(current);
821 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
822 x_push_node_unmaps(current);
826 * Pushes all changes (state of each node, see x_push_node() and the window
829 * NOTE: We need to push the stack first so that the windows have the correct
830 * stacking order. This is relevant for workspace switching where we map the
831 * windows because mapping may generate EnterNotify events. When they are
832 * generated in the wrong order, this will cause focus problems when switching
836 void x_push_changes(Con *con) {
838 xcb_query_pointer_cookie_t pointercookie;
840 /* If we need to warp later, we request the pointer position as soon as possible */
842 pointercookie = xcb_query_pointer(conn, root);
845 DLOG("-- PUSHING WINDOW STACK --\n");
846 //DLOG("Disabling EnterNotify\n");
847 uint32_t values[1] = { XCB_NONE };
848 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
850 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
852 //DLOG("Done, EnterNotify disabled\n");
853 bool order_changed = false;
854 bool stacking_changed = false;
856 /* count first, necessary to (re)allocate memory for the bottom-to-top
857 * stack afterwards */
859 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
860 if (state->con && state->con->window)
863 if (cnt != btt_stack_num) {
864 btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
868 xcb_window_t *walk = btt_stack;
870 /* X11 correctly represents the stack if we push it from bottom to top */
871 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
872 if (state->con && state->con->window)
873 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
875 //DLOG("stack: 0x%08x\n", state->id);
876 con_state *prev = CIRCLEQ_PREV(state, state);
877 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
878 if (prev != old_prev)
879 order_changed = true;
880 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
881 stacking_changed = true;
882 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
884 mask |= XCB_CONFIG_WINDOW_SIBLING;
885 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
886 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
888 xcb_configure_window(conn, prev->id, mask, values);
890 state->initial = false;
893 /* If we re-stacked something (or a new window appeared), we need to update
894 * the _NET_CLIENT_LIST_STACKING hint */
895 if (stacking_changed)
896 ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
898 DLOG("PUSHING CHANGES\n");
902 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
904 ELOG("Could not query pointer position, not warping pointer\n");
906 int mid_x = warp_to->x + (warp_to->width / 2);
907 int mid_y = warp_to->y + (warp_to->height / 2);
909 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
910 Output *target = get_output_containing(mid_x, mid_y);
911 if (current != target)
912 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
917 //DLOG("Re-enabling EnterNotify\n");
918 values[0] = FRAME_EVENT_MASK;
919 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
921 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
923 //DLOG("Done, EnterNotify re-enabled\n");
927 xcb_window_t to_focus = focused->frame;
928 if (focused->window != NULL)
929 to_focus = focused->window->id;
931 if (focused_id != to_focus) {
932 if (!focused->mapped) {
933 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
934 /* Invalidate focused_id to correctly focus new windows with the same ID */
935 focused_id = XCB_NONE;
937 bool set_focus = true;
938 if (focused->window != NULL &&
939 focused->window->needs_take_focus) {
940 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
941 to_focus, focused, focused->name);
942 send_take_focus(to_focus);
943 set_focus = !focused->window->doesnt_accept_focus;
944 DLOG("set_focus = %d\n", set_focus);
948 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
949 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
950 * no focus change events for our own focus changes. We only want
951 * these generated by the clients. */
952 if (focused->window != NULL) {
953 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
954 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
956 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
957 if (focused->window != NULL) {
958 values[0] = CHILD_EVENT_MASK;
959 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
962 ewmh_update_active_window(to_focus);
965 focused_id = to_focus;
969 if (focused_id == XCB_NONE) {
970 DLOG("Still no window focused, better set focus to the root window\n");
971 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
976 DLOG("ENDING CHANGES\n");
978 /* Disable EnterWindow events for windows which will be unmapped in
979 * x_push_node_unmaps() now. Unmapping windows happens when switching
980 * workspaces. We want to avoid getting EnterNotifies during that phase
981 * because they would screw up our focus. One of these cases is having a
982 * stack with two windows. If the first window is focused and gets
983 * unmapped, the second one appears under the cursor and therefore gets an
984 * EnterNotify event. */
985 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
986 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
987 if (!state->unmap_now)
989 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
992 /* Push all pending unmaps */
993 x_push_node_unmaps(con);
995 /* save the current stack as old stack */
996 CIRCLEQ_FOREACH(state, &state_head, state) {
997 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
998 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
1000 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
1001 // DLOG("old stack: 0x%08x\n", state->id);
1008 * Raises the specified container in the internal stack of X windows. The
1009 * next call to x_push_changes() will make the change visible in X11.
1012 void x_raise_con(Con *con) {
1014 state = state_for_frame(con->frame);
1015 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1017 CIRCLEQ_REMOVE(&state_head, state, state);
1018 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1022 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1023 * of the given name. Used for properly tagging the windows for easily spotting
1024 * i3 windows in xwininfo -root -all.
1027 void x_set_name(Con *con, const char *name) {
1028 struct con_state *state;
1030 if ((state = state_for_frame(con->frame)) == NULL) {
1031 ELOG("window state not found\n");
1036 state->name = sstrdup(name);
1040 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1043 void x_set_i3_atoms(void) {
1044 pid_t pid = getpid();
1045 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1046 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1047 current_socketpath);
1048 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1049 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1050 strlen(current_configpath), current_configpath);
1051 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1052 strlen(shmlogname), shmlogname);
1056 * Set warp_to coordinates. This will trigger on the next call to
1060 void x_set_warp_to(Rect *rect)
1066 * Applies the given mask to the event mask of every i3 window decoration X11
1067 * window. This is useful to disable EnterNotify while resizing so that focus
1071 void x_mask_event_mask(uint32_t mask) {
1072 uint32_t values[] = { FRAME_EVENT_MASK & mask };
1075 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1077 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);