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);
353 p->parent_orientation = con_orientation(parent);
355 if (con->deco_render_params != NULL &&
356 (con->window == NULL || !con->window->name_x_changed) &&
357 !parent->pixmap_recreated &&
358 !con->pixmap_recreated &&
359 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
365 while ((next = TAILQ_NEXT(next, nodes))) {
366 FREE(next->deco_render_params);
369 FREE(con->deco_render_params);
370 con->deco_render_params = p;
372 if (con->window != NULL && con->window->name_x_changed)
373 con->window->name_x_changed = false;
375 parent->pixmap_recreated = false;
376 con->pixmap_recreated = false;
378 /* 2: draw the client.background, but only for the parts around the client_rect */
379 if (con->window != NULL) {
380 xcb_rectangle_t background[] = {
382 { 0, 0, r->width, w->y },
384 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
386 { 0, 0, w->x, r->height },
388 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
391 for (int i = 0; i < 4; i++)
392 DLOG("rect is (%d, %d) with %d x %d\n",
400 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
401 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
404 /* 3: draw a rectangle in border color around the client */
405 if (p->border_style != BS_NONE && p->con_is_leaf) {
406 /* We might hide some borders adjacent to the screen-edge */
407 adjacent_t borders_to_hide = ADJ_NONE;
408 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
410 Rect br = con_border_style_rect(con);
412 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
413 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
414 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);
417 /* These rectangles represents the border around the child window
418 * (left, bottom and right part). We don’t just fill the whole
419 * rectangle because some childs are not freely resizable and we want
420 * their background color to "shine through". */
421 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
422 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
423 xcb_rectangle_t leftline = { 0, 0, br.x, r->height };
424 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
426 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
427 xcb_rectangle_t rightline = { r->width + br.width + br.x, 0, r->width, r->height };
428 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
430 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
431 xcb_rectangle_t bottomline = { 0, r->height + br.height + br.y, r->width, r->height };
432 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
434 /* 1pixel border needs an additional line at the top */
435 if (p->border_style == BS_1PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
436 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
437 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
440 /* Highlight the side of the border at which the next window will be
441 * opened if we are rendering a single window within a split container
442 * (which is undistinguishable from a single window outside a split
443 * container otherwise. */
444 if (TAILQ_NEXT(con, nodes) == NULL &&
445 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
446 con->parent->type != CT_FLOATING_CON) {
447 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator });
448 if (p->parent_orientation == HORIZ)
449 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
450 { r->width + br.width + br.x, br.y, r->width, r->height + br.height } });
452 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
453 { br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } });
458 /* if this is a borderless/1pixel window, we don’t need to render the
460 if (p->border_style != BS_NORMAL)
463 /* 4: paint the bar */
464 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
465 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
466 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
468 /* 5: draw two unconnected lines in border color */
469 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
470 Rect *dr = &(con->deco_rect);
471 xcb_segment_t segments[] = {
473 dr->x + dr->width - 1, dr->y },
475 { dr->x + 2, dr->y + dr->height - 1,
476 dr->x + dr->width - 3, dr->y + dr->height - 1 }
478 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
480 /* 6: draw the title */
481 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
482 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
484 struct Window *win = con->window;
485 if (win == NULL || win->name == NULL) {
486 /* this is a non-leaf container, we need to make up a good description */
487 // TODO: use a good description instead of just "another container"
488 draw_text_ascii("another container",
489 parent->pixmap, parent->pm_gc,
490 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
491 con->deco_rect.width - 2);
495 int indent_level = 0,
497 Con *il_parent = parent;
498 if (il_parent->layout != L_STACKED) {
500 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
501 if (il_parent->layout == L_STACKED)
503 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
505 il_parent = il_parent->parent;
509 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
510 int indent_px = (indent_level * 5) * indent_mult;
513 parent->pixmap, parent->pm_gc,
514 con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y,
515 con->deco_rect.width - 2 - indent_px);
517 /* Since we don’t clip the text at all, it might in some cases be painted
518 * on the border pixels on the right side of a window. Therefore, we draw
519 * the right border again after rendering the text (and the unconnected
520 * lines in border color). */
522 /* Draw a separator line after every tab (except the last one), so that
523 * tabs can be easily distinguished. */
524 if (parent->layout == L_TABBED && TAILQ_NEXT(con, nodes) != NULL) {
525 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
527 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
529 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 4,
531 { dr->x + dr->width - 1, dr->y },
532 { dr->x + dr->width - 1, dr->y + dr->height },
533 { dr->x + dr->width - 2, dr->y },
534 { dr->x + dr->width - 2, dr->y + dr->height }
537 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
538 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
541 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
545 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
546 * because x_push_node uses focus order to recurse (see the comment above)
547 * while drawing the decoration needs to happen in the actual order.
550 void x_deco_recurse(Con *con) {
552 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
553 TAILQ_EMPTY(&(con->floating_head));
554 con_state *state = state_for_frame(con->frame);
557 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
558 x_deco_recurse(current);
560 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
561 x_deco_recurse(current);
564 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
567 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
568 (!leaf || con->mapped))
569 x_draw_decoration(con);
573 * This function pushes the properties of each node of the layout tree to
574 * X11 if they have changed (like the map state, position of the window, …).
575 * It recursively traverses all children of the given node.
578 void x_push_node(Con *con) {
581 Rect rect = con->rect;
583 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
584 state = state_for_frame(con->frame);
586 if (state->name != NULL) {
587 DLOG("pushing name %s for con %p\n", state->name, con);
589 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
590 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
594 if (con->window == NULL) {
595 /* Calculate the height of all window decorations which will be drawn on to
597 uint32_t max_y = 0, max_height = 0;
598 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
599 Rect *dr = &(current->deco_rect);
600 if (dr->y >= max_y && dr->height >= max_height) {
602 max_height = dr->height;
605 rect.height = max_y + max_height;
606 if (rect.height == 0)
610 /* reparent the child window (when the window was moved due to a sticky
612 if (state->need_reparent && con->window != NULL) {
613 DLOG("Reparenting child window\n");
615 /* Temporarily set the event masks to XCB_NONE so that we won’t get
616 * UnmapNotify events (otherwise the handler would close the container).
617 * These events are generated automatically when reparenting. */
618 uint32_t values[] = { XCB_NONE };
619 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
620 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
622 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
624 values[0] = FRAME_EVENT_MASK;
625 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
626 values[0] = CHILD_EVENT_MASK;
627 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
629 state->old_frame = XCB_NONE;
630 state->need_reparent = false;
633 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
634 con, con->window->id, con->ignore_unmap);
637 bool fake_notify = false;
638 /* Set new position if rect changed (and if height > 0) */
639 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
641 /* We first create the new pixmap, then render to it, set it as the
642 * background and only afterwards change the window size. This reduces
645 /* As the pixmap only depends on the size and not on the position, it
646 * is enough to check if width/height have changed. Also, we don’t
647 * create a pixmap at all when the window is actually not visible
649 if ((state->rect.width != rect.width ||
650 state->rect.height != rect.height)) {
651 if (con->pixmap == 0) {
652 con->pixmap = xcb_generate_id(conn);
653 con->pm_gc = xcb_generate_id(conn);
655 xcb_free_pixmap(conn, con->pixmap);
656 xcb_free_gc(conn, con->pm_gc);
659 uint16_t win_depth = root_depth;
661 win_depth = con->window->depth;
663 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
665 /* For the graphics context, we disable GraphicsExposure events.
666 * Those will be sent when a CopyArea request cannot be fulfilled
667 * properly due to parts of the source being unmapped or otherwise
668 * unavailable. Since we always copy from pixmaps to windows, this
669 * is not a concern for us. */
670 uint32_t values[] = { 0 };
671 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
673 con->pixmap_recreated = true;
675 /* Don’t render the decoration for windows inside a stack which are
676 * not visible right now */
678 con->parent->layout != L_STACKED ||
679 TAILQ_FIRST(&(con->parent->focus_head)) == con)
680 /* Render the decoration now to make the correct decoration visible
681 * from the very first moment. Later calls will be cached, so this
682 * doesn’t hurt performance. */
686 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
687 /* flush to ensure that the following commands are sent in a single
688 * buffer and will be processed directly afterwards (the contents of a
689 * window get lost when resizing it, therefore we want to provide it as
690 * fast as possible) */
692 xcb_set_window_rect(conn, con->frame, rect);
693 if (con->pixmap != XCB_NONE)
694 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
697 memcpy(&(state->rect), &rect, sizeof(Rect));
701 /* dito, but for child windows */
702 if (con->window != NULL &&
703 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
704 DLOG("setting window rect (%d, %d, %d, %d)\n",
705 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
706 xcb_set_window_rect(conn, con->window->id, con->window_rect);
707 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
711 /* Map if map state changed, also ensure that the child window
712 * is changed if we are mapped *and* in initial state (meaning the
713 * container was empty before, but now got a child). Unmaps are handled in
714 * x_push_node_unmaps(). */
715 if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
717 xcb_void_cookie_t cookie;
719 if (con->window != NULL) {
720 /* Set WM_STATE_NORMAL because GTK applications don’t want to
721 * drag & drop if we don’t. Also, xprop(1) needs it. */
722 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
723 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
724 A_WM_STATE, A_WM_STATE, 32, 2, data);
728 if (!state->child_mapped && con->window != NULL) {
729 cookie = xcb_map_window(conn, con->window->id);
731 /* We are interested in EnterNotifys as soon as the window is
733 values[0] = CHILD_EVENT_MASK;
734 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
735 DLOG("mapping child window (serial %d)\n", cookie.sequence);
736 state->child_mapped = true;
739 cookie = xcb_map_window(conn, con->frame);
741 values[0] = FRAME_EVENT_MASK;
742 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
744 /* copy the pixmap contents to the frame window immediately after mapping */
745 if (con->pixmap != XCB_NONE)
746 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
749 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
750 state->mapped = con->mapped;
753 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
756 DLOG("Sending fake configure notify\n");
757 fake_absolute_configure_notify(con);
760 /* Handle all children and floating windows of this node. We recurse
761 * in focus order to display the focused client in a stack first when
762 * switching workspaces (reduces flickering). */
763 TAILQ_FOREACH(current, &(con->focus_head), focused)
764 x_push_node(current);
768 * Same idea as in x_push_node(), but this function only unmaps windows. It is
769 * necessary to split this up to handle new fullscreen clients properly: The
770 * new window needs to be mapped and focus needs to be set *before* the
771 * underlying windows are unmapped. Otherwise, focus will revert to the
772 * PointerRoot and will then be set to the new window, generating unnecessary
773 * FocusIn/FocusOut events.
776 static void x_push_node_unmaps(Con *con) {
780 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
781 state = state_for_frame(con->frame);
783 /* map/unmap if map state changed, also ensure that the child window
784 * is changed if we are mapped *and* in initial state (meaning the
785 * container was empty before, but now got a child) */
786 if (state->unmap_now) {
787 xcb_void_cookie_t cookie;
788 if (con->window != NULL) {
789 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
790 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
791 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
792 A_WM_STATE, A_WM_STATE, 32, 2, data);
795 cookie = xcb_unmap_window(conn, con->frame);
796 DLOG("unmapping container %p / %s (serial %d)\n", con, con->name, cookie.sequence);
797 /* we need to increase ignore_unmap for this container (if it
798 * contains a window) and for every window "under" this one which
799 * contains a window */
800 if (con->window != NULL) {
802 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
804 state->mapped = con->mapped;
807 /* handle all children and floating windows of this node */
808 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
809 x_push_node_unmaps(current);
811 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
812 x_push_node_unmaps(current);
816 * Pushes all changes (state of each node, see x_push_node() and the window
819 * NOTE: We need to push the stack first so that the windows have the correct
820 * stacking order. This is relevant for workspace switching where we map the
821 * windows because mapping may generate EnterNotify events. When they are
822 * generated in the wrong order, this will cause focus problems when switching
826 void x_push_changes(Con *con) {
828 xcb_query_pointer_cookie_t pointercookie;
830 /* If we need to warp later, we request the pointer position as soon as possible */
832 pointercookie = xcb_query_pointer(conn, root);
835 DLOG("-- PUSHING WINDOW STACK --\n");
836 //DLOG("Disabling EnterNotify\n");
837 uint32_t values[1] = { XCB_NONE };
838 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
840 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
842 //DLOG("Done, EnterNotify disabled\n");
843 bool order_changed = false;
844 bool stacking_changed = false;
846 /* count first, necessary to (re)allocate memory for the bottom-to-top
847 * stack afterwards */
849 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
850 if (state->con && state->con->window)
853 if (cnt != btt_stack_num) {
854 btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
858 xcb_window_t *walk = btt_stack;
860 /* X11 correctly represents the stack if we push it from bottom to top */
861 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
862 if (state->con && state->con->window)
863 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
865 //DLOG("stack: 0x%08x\n", state->id);
866 con_state *prev = CIRCLEQ_PREV(state, state);
867 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
868 if (prev != old_prev)
869 order_changed = true;
870 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
871 stacking_changed = true;
872 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
874 mask |= XCB_CONFIG_WINDOW_SIBLING;
875 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
876 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
878 xcb_configure_window(conn, prev->id, mask, values);
880 state->initial = false;
883 /* If we re-stacked something (or a new window appeared), we need to update
884 * the _NET_CLIENT_LIST_STACKING hint */
885 if (stacking_changed)
886 ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
888 DLOG("PUSHING CHANGES\n");
892 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
894 ELOG("Could not query pointer position, not warping pointer\n");
896 int mid_x = warp_to->x + (warp_to->width / 2);
897 int mid_y = warp_to->y + (warp_to->height / 2);
899 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
900 Output *target = get_output_containing(mid_x, mid_y);
901 if (current != target)
902 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
907 //DLOG("Re-enabling EnterNotify\n");
908 values[0] = FRAME_EVENT_MASK;
909 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
911 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
913 //DLOG("Done, EnterNotify re-enabled\n");
917 xcb_window_t to_focus = focused->frame;
918 if (focused->window != NULL)
919 to_focus = focused->window->id;
921 if (focused_id != to_focus) {
922 if (!focused->mapped) {
923 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
924 /* Invalidate focused_id to correctly focus new windows with the same ID */
925 focused_id = XCB_NONE;
927 bool set_focus = true;
928 if (focused->window != NULL &&
929 focused->window->needs_take_focus) {
930 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
931 to_focus, focused, focused->name);
932 send_take_focus(to_focus);
933 set_focus = !focused->window->doesnt_accept_focus;
934 DLOG("set_focus = %d\n", set_focus);
938 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
939 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
940 * no focus change events for our own focus changes. We only want
941 * these generated by the clients. */
942 if (focused->window != NULL) {
943 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
944 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
946 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
947 if (focused->window != NULL) {
948 values[0] = CHILD_EVENT_MASK;
949 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
952 ewmh_update_active_window(to_focus);
955 focused_id = to_focus;
959 if (focused_id == XCB_NONE) {
960 DLOG("Still no window focused, better set focus to the root window\n");
961 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
966 DLOG("ENDING CHANGES\n");
968 /* Disable EnterWindow events for windows which will be unmapped in
969 * x_push_node_unmaps() now. Unmapping windows happens when switching
970 * workspaces. We want to avoid getting EnterNotifies during that phase
971 * because they would screw up our focus. One of these cases is having a
972 * stack with two windows. If the first window is focused and gets
973 * unmapped, the second one appears under the cursor and therefore gets an
974 * EnterNotify event. */
975 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
976 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
977 if (!state->unmap_now)
979 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
982 /* Push all pending unmaps */
983 x_push_node_unmaps(con);
985 /* save the current stack as old stack */
986 CIRCLEQ_FOREACH(state, &state_head, state) {
987 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
988 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
990 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
991 // DLOG("old stack: 0x%08x\n", state->id);
998 * Raises the specified container in the internal stack of X windows. The
999 * next call to x_push_changes() will make the change visible in X11.
1002 void x_raise_con(Con *con) {
1004 state = state_for_frame(con->frame);
1005 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1007 CIRCLEQ_REMOVE(&state_head, state, state);
1008 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1012 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1013 * of the given name. Used for properly tagging the windows for easily spotting
1014 * i3 windows in xwininfo -root -all.
1017 void x_set_name(Con *con, const char *name) {
1018 struct con_state *state;
1020 if ((state = state_for_frame(con->frame)) == NULL) {
1021 ELOG("window state not found\n");
1026 state->name = sstrdup(name);
1030 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1033 void x_set_i3_atoms(void) {
1034 pid_t pid = getpid();
1035 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1036 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1037 current_socketpath);
1038 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_PID, XCB_ATOM_CARDINAL, 32, 1, &pid);
1039 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1040 strlen(current_configpath), current_configpath);
1041 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1042 strlen(shmlogname), shmlogname);
1046 * Set warp_to coordinates. This will trigger on the next call to
1050 void x_set_warp_to(Rect *rect)
1056 * Applies the given mask to the event mask of every i3 window decoration X11
1057 * window. This is useful to disable EnterNotify while resizing so that focus
1061 void x_mask_event_mask(uint32_t mask) {
1062 uint32_t values[] = { FRAME_EVENT_MASK & mask };
1065 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1067 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);