3 * vim:ts=4:sw=4:expandtab
5 * i3 - an improved dynamic tiling window manager
6 * © 2009-2012 Michael Stapelberg and contributors (see also: LICENSE)
8 * x.c: Interface to X11, transfers our in-memory state to X11 (see also
9 * render.c). Basically a big state machine.
14 /* Stores the X11 window ID of the currently focused window */
15 xcb_window_t focused_id = XCB_NONE;
17 /* The bottom-to-top window stack of all windows which are managed by i3.
18 * Used for x_get_window_stack(). */
19 static xcb_window_t *btt_stack;
20 static int btt_stack_num;
22 /* Stores coordinates to warp mouse pointer to if set */
26 * Describes the X11 state we may modify (map state, position, window stack).
27 * There is one entry per container. The state represents the current situation
28 * as X11 sees it (with the exception of the order in the state_head CIRCLEQ,
29 * which represents the order that will be pushed to X11, while old_state_head
30 * represents the current order). It will be updated in x_push_changes().
33 typedef struct con_state {
39 /** The con for which this state is. */
42 /* For reparenting, we have a flag (need_reparent) and the X ID of the old
43 * frame this window was in. The latter is necessary because we need to
44 * ignore UnmapNotify events (by changing the window event mask). */
46 xcb_window_t old_frame;
55 CIRCLEQ_ENTRY(con_state) state;
56 CIRCLEQ_ENTRY(con_state) old_state;
59 CIRCLEQ_HEAD(state_head, con_state) state_head =
60 CIRCLEQ_HEAD_INITIALIZER(state_head);
62 CIRCLEQ_HEAD(old_state_head, con_state) old_state_head =
63 CIRCLEQ_HEAD_INITIALIZER(old_state_head);
66 * Returns the container state for the given frame. This function always
67 * returns a container state (otherwise, there is a bug in the code and the
68 * container state of a container for which x_con_init() was not called was
72 static con_state *state_for_frame(xcb_window_t window) {
74 CIRCLEQ_FOREACH(state, &state_head, state)
75 if (state->id == window)
78 /* TODO: better error handling? */
79 ELOG("No state found\n");
85 * Initializes the X11 part for the given container. Called exactly once for
86 * every container from con_new().
89 void x_con_init(Con *con, uint16_t depth) {
90 /* TODO: maybe create the window when rendering first? we could then even
91 * get the initial geometry right */
96 xcb_visualid_t visual = XCB_COPY_FROM_PARENT;
97 xcb_colormap_t win_colormap = XCB_NONE;
98 if (depth != root_depth && depth != XCB_COPY_FROM_PARENT) {
99 /* For custom visuals, we need to create a colormap before creating
100 * this window. It will be freed directly after creating the window. */
101 visual = get_visualid_by_depth(depth);
102 win_colormap = xcb_generate_id(conn);
103 xcb_create_colormap_checked(conn, XCB_COLORMAP_ALLOC_NONE, win_colormap, root, visual);
105 /* We explicitly set a background color and border color (even though we
106 * don’t even have a border) because the X11 server requires us to when
107 * using 32 bit color depths, see
108 * http://stackoverflow.com/questions/3645632 */
109 mask |= XCB_CW_BACK_PIXEL;
110 values[0] = root_screen->black_pixel;
112 mask |= XCB_CW_BORDER_PIXEL;
113 values[1] = root_screen->black_pixel;
115 /* our own frames should not be managed */
116 mask |= XCB_CW_OVERRIDE_REDIRECT;
119 /* see include/xcb.h for the FRAME_EVENT_MASK */
120 mask |= XCB_CW_EVENT_MASK;
121 values[3] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
123 mask |= XCB_CW_COLORMAP;
124 values[4] = win_colormap;
126 /* our own frames should not be managed */
127 mask = XCB_CW_OVERRIDE_REDIRECT;
130 /* see include/xcb.h for the FRAME_EVENT_MASK */
131 mask |= XCB_CW_EVENT_MASK;
132 values[1] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
134 mask |= XCB_CW_COLORMAP;
135 values[2] = colormap;
138 Rect dims = { -15, -15, 10, 10 };
139 con->frame = create_window(conn, dims, depth, visual, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCURSOR_CURSOR_POINTER, false, mask, values);
141 if (win_colormap != XCB_NONE)
142 xcb_free_colormap(conn, win_colormap);
144 struct con_state *state = scalloc(sizeof(struct con_state));
145 state->id = con->frame;
146 state->mapped = false;
147 state->initial = true;
148 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
149 CIRCLEQ_INSERT_HEAD(&old_state_head, state, old_state);
150 DLOG("adding new state for window id 0x%08x\n", state->id);
154 * Re-initializes the associated X window state for this container. You have
155 * to call this when you assign a client to an empty container to ensure that
156 * its state gets updated correctly.
159 void x_reinit(Con *con) {
160 struct con_state *state;
162 if ((state = state_for_frame(con->frame)) == NULL) {
163 ELOG("window state not found\n");
167 DLOG("resetting state %p to initial\n", state);
168 state->initial = true;
169 state->child_mapped = false;
171 memset(&(state->window_rect), 0, sizeof(Rect));
175 * Reparents the child window of the given container (necessary for sticky
176 * containers). The reparenting happens in the next call of x_push_changes().
179 void x_reparent_child(Con *con, Con *old) {
180 struct con_state *state;
181 if ((state = state_for_frame(con->frame)) == NULL) {
182 ELOG("window state for con not found\n");
186 state->need_reparent = true;
187 state->old_frame = old->frame;
191 * Moves a child window from Container src to Container dest.
194 void x_move_win(Con *src, Con *dest) {
195 struct con_state *state_src, *state_dest;
197 if ((state_src = state_for_frame(src->frame)) == NULL) {
198 ELOG("window state for src not found\n");
202 if ((state_dest = state_for_frame(dest->frame)) == NULL) {
203 ELOG("window state for dest not found\n");
207 state_dest->con = state_src->con;
208 state_src->con = NULL;
210 Rect zero = { 0, 0, 0, 0 };
211 if (memcmp(&(state_dest->window_rect), &(zero), sizeof(Rect)) == 0) {
212 memcpy(&(state_dest->window_rect), &(state_src->window_rect), sizeof(Rect));
213 DLOG("COPYING RECT\n");
218 * Kills the window decoration associated with the given container.
221 void x_con_kill(Con *con) {
224 xcb_destroy_window(conn, con->frame);
225 xcb_free_pixmap(conn, con->pixmap);
226 xcb_free_gc(conn, con->pm_gc);
227 state = state_for_frame(con->frame);
228 CIRCLEQ_REMOVE(&state_head, state, state);
229 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
233 /* Invalidate focused_id to correctly focus new windows with the same ID */
234 focused_id = XCB_NONE;
238 * Returns true if the client supports the given protocol atom (like WM_DELETE_WINDOW)
241 bool window_supports_protocol(xcb_window_t window, xcb_atom_t atom) {
242 xcb_get_property_cookie_t cookie;
243 xcb_icccm_get_wm_protocols_reply_t protocols;
246 cookie = xcb_icccm_get_wm_protocols(conn, window, A_WM_PROTOCOLS);
247 if (xcb_icccm_get_wm_protocols_reply(conn, cookie, &protocols, NULL) != 1)
250 /* Check if the client’s protocols have the requested atom set */
251 for (uint32_t i = 0; i < protocols.atoms_len; i++)
252 if (protocols.atoms[i] == atom)
255 xcb_icccm_get_wm_protocols_reply_wipe(&protocols);
261 * Kills the given X11 window using WM_DELETE_WINDOW (if supported).
264 void x_window_kill(xcb_window_t window, kill_window_t kill_window) {
265 /* if this window does not support WM_DELETE_WINDOW, we kill it the hard way */
266 if (!window_supports_protocol(window, A_WM_DELETE_WINDOW)) {
267 if (kill_window == KILL_WINDOW) {
268 LOG("Killing specific window 0x%08x\n", window);
269 xcb_destroy_window(conn, window);
271 LOG("Killing the X11 client which owns window 0x%08x\n", window);
272 xcb_kill_client(conn, window);
277 /* Every X11 event is 32 bytes long. Therefore, XCB will copy 32 bytes.
278 * In order to properly initialize these bytes, we allocate 32 bytes even
279 * though we only need less for an xcb_configure_notify_event_t */
280 void *event = scalloc(32);
281 xcb_client_message_event_t *ev = event;
283 ev->response_type = XCB_CLIENT_MESSAGE;
285 ev->type = A_WM_PROTOCOLS;
287 ev->data.data32[0] = A_WM_DELETE_WINDOW;
288 ev->data.data32[1] = XCB_CURRENT_TIME;
290 LOG("Sending WM_DELETE to the client\n");
291 xcb_send_event(conn, false, window, XCB_EVENT_MASK_NO_EVENT, (char*)ev);
297 * Draws the decoration of the given container onto its parent.
300 void x_draw_decoration(Con *con) {
301 Con *parent = con->parent;
302 bool leaf = con_is_leaf(con);
304 /* This code needs to run for:
306 * • non-leaf containers which are in a stacked/tabbed container
308 * It does not need to run for:
309 * • direct children of outputs or dockareas
310 * • floating containers (they don’t have a decoration)
313 parent->layout != L_STACKED &&
314 parent->layout != L_TABBED) ||
315 parent->type == CT_OUTPUT ||
316 parent->type == CT_DOCKAREA ||
317 con->type == CT_FLOATING_CON)
320 /* Skip containers whose height is 0 (for example empty dockareas) */
321 if (con->rect.height == 0)
324 /* Skip containers whose pixmap has not yet been created (can happen when
325 * decoration rendering happens recursively for a window for which
326 * x_push_node() was not yet called) */
327 if (leaf && con->pixmap == XCB_NONE)
330 /* 1: build deco_params and compare with cache */
331 struct deco_render_params *p = scalloc(sizeof(struct deco_render_params));
333 /* find out which colors to use */
335 p->color = &config.client.urgent;
336 else if (con == focused || con_inside_focused(con))
337 p->color = &config.client.focused;
338 else if (con == TAILQ_FIRST(&(parent->focus_head)))
339 p->color = &config.client.focused_inactive;
341 p->color = &config.client.unfocused;
343 p->border_style = con_border_style(con);
345 Rect *r = &(con->rect);
346 Rect *w = &(con->window_rect);
347 p->con_rect = (struct width_height){ r->width, r->height };
348 p->con_window_rect = (struct width_height){ w->width, w->height };
349 p->con_deco_rect = con->deco_rect;
350 p->background = config.client.background;
351 p->con_is_leaf = con_is_leaf(con);
353 if (con->deco_render_params != NULL &&
354 (con->window == NULL || !con->window->name_x_changed) &&
355 !parent->pixmap_recreated &&
356 !con->pixmap_recreated &&
357 memcmp(p, con->deco_render_params, sizeof(struct deco_render_params)) == 0) {
363 while ((next = TAILQ_NEXT(next, nodes))) {
364 FREE(next->deco_render_params);
367 FREE(con->deco_render_params);
368 con->deco_render_params = p;
370 if (con->window != NULL && con->window->name_x_changed)
371 con->window->name_x_changed = false;
373 parent->pixmap_recreated = false;
374 con->pixmap_recreated = false;
376 /* 2: draw the client.background, but only for the parts around the client_rect */
377 if (con->window != NULL) {
378 xcb_rectangle_t background[] = {
380 { 0, 0, r->width, w->y },
382 { 0, (w->y + w->height), r->width, r->height - (w->y + w->height) },
384 { 0, 0, w->x, r->height },
386 { w->x + w->width, 0, r->width - (w->x + w->width), r->height }
389 for (int i = 0; i < 4; i++)
390 DLOG("rect is (%d, %d) with %d x %d\n",
398 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]) { config.client.background });
399 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, sizeof(background) / sizeof(xcb_rectangle_t), background);
402 /* 3: draw a rectangle in border color around the client */
403 if (p->border_style != BS_NONE && p->con_is_leaf) {
404 /* We might hide some borders adjacent to the screen-edge */
405 adjacent_t borders_to_hide = ADJ_NONE;
406 borders_to_hide = con_adjacent_borders(con) & config.hide_edge_borders;
408 Rect br = con_border_style_rect(con);
410 DLOG("con->rect spans %d x %d\n", con->rect.width, con->rect.height);
411 DLOG("border_rect spans (%d, %d) with %d x %d\n", br.x, br.y, br.width, br.height);
412 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);
415 /* These rectangles represents the border around the child window
416 * (left, bottom and right part). We don’t just fill the whole
417 * rectangle because some childs are not freely resizable and we want
418 * their background color to "shine through". */
419 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
420 if (!(borders_to_hide & ADJ_LEFT_SCREEN_EDGE)) {
421 xcb_rectangle_t leftline = { 0, 0, br.x, r->height };
422 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &leftline);
424 if (!(borders_to_hide & ADJ_RIGHT_SCREEN_EDGE)) {
425 xcb_rectangle_t rightline = { r->width + br.width + br.x, 0, r->width, r->height };
426 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &rightline);
428 if (!(borders_to_hide & ADJ_LOWER_SCREEN_EDGE)) {
429 xcb_rectangle_t bottomline = { 0, r->height + br.height + br.y, r->width, r->height };
430 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &bottomline);
432 /* 1pixel border needs an additional line at the top */
433 if (p->border_style == BS_1PIXEL && !(borders_to_hide & ADJ_UPPER_SCREEN_EDGE)) {
434 xcb_rectangle_t topline = { br.x, 0, con->rect.width + br.width + br.x, br.y };
435 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, &topline);
438 /* Highlight the side of the border at which the next window will be
439 * opened if we are rendering a single window within a split container
440 * (which is undistinguishable from a single window outside a split
441 * container otherwise. */
442 if (TAILQ_NEXT(con, nodes) == NULL &&
443 TAILQ_PREV(con, nodes_head, nodes) == NULL &&
444 con->parent->type != CT_FLOATING_CON) {
445 xcb_change_gc(conn, con->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->indicator });
446 if (con_orientation(con->parent) == HORIZ)
447 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
448 { r->width + br.width + br.x, 0, r->width, r->height + br.height } });
450 xcb_poly_fill_rectangle(conn, con->pixmap, con->pm_gc, 1, (xcb_rectangle_t[]){
451 { br.x, r->height + br.height + br.y, r->width - (2 * br.x), r->height } });
456 /* if this is a borderless/1pixel window, we don’t need to render the
458 if (p->border_style != BS_NORMAL)
461 /* 4: paint the bar */
462 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
463 xcb_rectangle_t drect = { con->deco_rect.x, con->deco_rect.y, con->deco_rect.width, con->deco_rect.height };
464 xcb_poly_fill_rectangle(conn, parent->pixmap, parent->pm_gc, 1, &drect);
466 /* 5: draw two unconnected lines in border color */
467 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
468 Rect *dr = &(con->deco_rect);
469 xcb_segment_t segments[] = {
471 dr->x + dr->width - 1, dr->y },
473 { dr->x + 2, dr->y + dr->height - 1,
474 dr->x + dr->width - 3, dr->y + dr->height - 1 }
476 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
478 /* 6: draw the title */
479 set_font_colors(parent->pm_gc, p->color->text, p->color->background);
480 int text_offset_y = (con->deco_rect.height - config.font.height) / 2;
482 struct Window *win = con->window;
483 if (win == NULL || win->name_x == NULL) {
484 /* this is a non-leaf container, we need to make up a good description */
485 // TODO: use a good description instead of just "another container"
486 draw_text("another container", strlen("another container"), false,
487 parent->pixmap, parent->pm_gc,
488 con->deco_rect.x + 2, con->deco_rect.y + text_offset_y,
489 con->deco_rect.width - 2);
493 int indent_level = 0,
495 Con *il_parent = parent;
496 if (il_parent->layout != L_STACKED) {
498 //DLOG("il_parent = %p, layout = %d\n", il_parent, il_parent->layout);
499 if (il_parent->layout == L_STACKED)
501 if (il_parent->type == CT_WORKSPACE || il_parent->type == CT_DOCKAREA || il_parent->type == CT_OUTPUT)
503 il_parent = il_parent->parent;
507 //DLOG("indent_level = %d, indent_mult = %d\n", indent_level, indent_mult);
508 int indent_px = (indent_level * 5) * indent_mult;
510 draw_text(win->name_x, win->name_len, win->uses_net_wm_name,
511 parent->pixmap, parent->pm_gc,
512 con->deco_rect.x + 2 + indent_px, con->deco_rect.y + text_offset_y,
513 con->deco_rect.width - 2 - indent_px);
515 /* Since we don’t clip the text at all, it might in some cases be painted
516 * on the border pixels on the right side of a window. Therefore, we draw
517 * the right border again after rendering the text (and the unconnected
518 * lines in border color). */
520 /* Draw a separator line after every tab (except the last one), so that
521 * tabs can be easily distinguished. */
522 if (parent->layout == L_TABBED && TAILQ_NEXT(con, nodes) != NULL) {
523 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
525 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->background });
527 xcb_poly_line(conn, XCB_COORD_MODE_ORIGIN, parent->pixmap, parent->pm_gc, 4,
529 { dr->x + dr->width - 1, dr->y },
530 { dr->x + dr->width - 1, dr->y + dr->height },
531 { dr->x + dr->width - 2, dr->y },
532 { dr->x + dr->width - 2, dr->y + dr->height }
535 xcb_change_gc(conn, parent->pm_gc, XCB_GC_FOREGROUND, (uint32_t[]){ p->color->border });
536 xcb_poly_segment(conn, parent->pixmap, parent->pm_gc, 2, segments);
539 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
543 * Recursively calls x_draw_decoration. This cannot be done in x_push_node
544 * because x_push_node uses focus order to recurse (see the comment above)
545 * while drawing the decoration needs to happen in the actual order.
548 void x_deco_recurse(Con *con) {
550 bool leaf = TAILQ_EMPTY(&(con->nodes_head)) &&
551 TAILQ_EMPTY(&(con->floating_head));
552 con_state *state = state_for_frame(con->frame);
555 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
556 x_deco_recurse(current);
558 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
559 x_deco_recurse(current);
562 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
565 if ((con->type != CT_ROOT && con->type != CT_OUTPUT) &&
566 (!leaf || con->mapped))
567 x_draw_decoration(con);
571 * This function pushes the properties of each node of the layout tree to
572 * X11 if they have changed (like the map state, position of the window, …).
573 * It recursively traverses all children of the given node.
576 void x_push_node(Con *con) {
579 Rect rect = con->rect;
581 //DLOG("Pushing changes for node %p / %s\n", con, con->name);
582 state = state_for_frame(con->frame);
584 if (state->name != NULL) {
585 DLOG("pushing name %s for con %p\n", state->name, con);
587 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->frame,
588 XCB_ATOM_WM_NAME, XCB_ATOM_STRING, 8, strlen(state->name), state->name);
592 if (con->window == NULL) {
593 /* Calculate the height of all window decorations which will be drawn on to
595 uint32_t max_y = 0, max_height = 0;
596 TAILQ_FOREACH(current, &(con->nodes_head), nodes) {
597 Rect *dr = &(current->deco_rect);
598 if (dr->y >= max_y && dr->height >= max_height) {
600 max_height = dr->height;
603 rect.height = max_y + max_height;
604 if (rect.height == 0)
608 /* reparent the child window (when the window was moved due to a sticky
610 if (state->need_reparent && con->window != NULL) {
611 DLOG("Reparenting child window\n");
613 /* Temporarily set the event masks to XCB_NONE so that we won’t get
614 * UnmapNotify events (otherwise the handler would close the container).
615 * These events are generated automatically when reparenting. */
616 uint32_t values[] = { XCB_NONE };
617 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
618 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
620 xcb_reparent_window(conn, con->window->id, con->frame, 0, 0);
622 values[0] = FRAME_EVENT_MASK;
623 xcb_change_window_attributes(conn, state->old_frame, XCB_CW_EVENT_MASK, values);
624 values[0] = CHILD_EVENT_MASK;
625 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
627 state->old_frame = XCB_NONE;
628 state->need_reparent = false;
631 DLOG("ignore_unmap for reparenting of con %p (win 0x%08x) is now %d\n",
632 con, con->window->id, con->ignore_unmap);
635 bool fake_notify = false;
636 /* Set new position if rect changed (and if height > 0) */
637 if (memcmp(&(state->rect), &rect, sizeof(Rect)) != 0 &&
639 /* We first create the new pixmap, then render to it, set it as the
640 * background and only afterwards change the window size. This reduces
643 /* As the pixmap only depends on the size and not on the position, it
644 * is enough to check if width/height have changed. Also, we don’t
645 * create a pixmap at all when the window is actually not visible
647 if ((state->rect.width != rect.width ||
648 state->rect.height != rect.height)) {
649 if (con->pixmap == 0) {
650 con->pixmap = xcb_generate_id(conn);
651 con->pm_gc = xcb_generate_id(conn);
653 xcb_free_pixmap(conn, con->pixmap);
654 xcb_free_gc(conn, con->pm_gc);
657 uint16_t win_depth = root_depth;
659 win_depth = con->window->depth;
661 xcb_create_pixmap(conn, win_depth, con->pixmap, con->frame, rect.width, rect.height);
663 /* For the graphics context, we disable GraphicsExposure events.
664 * Those will be sent when a CopyArea request cannot be fulfilled
665 * properly due to parts of the source being unmapped or otherwise
666 * unavailable. Since we always copy from pixmaps to windows, this
667 * is not a concern for us. */
668 uint32_t values[] = { 0 };
669 xcb_create_gc(conn, con->pm_gc, con->pixmap, XCB_GC_GRAPHICS_EXPOSURES, values);
671 con->pixmap_recreated = true;
673 /* Don’t render the decoration for windows inside a stack which are
674 * not visible right now */
676 con->parent->layout != L_STACKED ||
677 TAILQ_FIRST(&(con->parent->focus_head)) == con)
678 /* Render the decoration now to make the correct decoration visible
679 * from the very first moment. Later calls will be cached, so this
680 * doesn’t hurt performance. */
684 DLOG("setting rect (%d, %d, %d, %d)\n", rect.x, rect.y, rect.width, rect.height);
685 /* flush to ensure that the following commands are sent in a single
686 * buffer and will be processed directly afterwards (the contents of a
687 * window get lost when resizing it, therefore we want to provide it as
688 * fast as possible) */
690 xcb_set_window_rect(conn, con->frame, rect);
691 if (con->pixmap != XCB_NONE)
692 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
695 memcpy(&(state->rect), &rect, sizeof(Rect));
699 /* dito, but for child windows */
700 if (con->window != NULL &&
701 memcmp(&(state->window_rect), &(con->window_rect), sizeof(Rect)) != 0) {
702 DLOG("setting window rect (%d, %d, %d, %d)\n",
703 con->window_rect.x, con->window_rect.y, con->window_rect.width, con->window_rect.height);
704 xcb_set_window_rect(conn, con->window->id, con->window_rect);
705 memcpy(&(state->window_rect), &(con->window_rect), sizeof(Rect));
709 /* Map if map state changed, also ensure that the child window
710 * is changed if we are mapped *and* in initial state (meaning the
711 * container was empty before, but now got a child). Unmaps are handled in
712 * x_push_node_unmaps(). */
713 if ((state->mapped != con->mapped || (con->mapped && state->initial)) &&
715 xcb_void_cookie_t cookie;
717 if (con->window != NULL) {
718 /* Set WM_STATE_NORMAL because GTK applications don’t want to
719 * drag & drop if we don’t. Also, xprop(1) needs it. */
720 long data[] = { XCB_ICCCM_WM_STATE_NORMAL, XCB_NONE };
721 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
722 A_WM_STATE, A_WM_STATE, 32, 2, data);
726 if (!state->child_mapped && con->window != NULL) {
727 cookie = xcb_map_window(conn, con->window->id);
729 /* We are interested in EnterNotifys as soon as the window is
731 values[0] = CHILD_EVENT_MASK;
732 xcb_change_window_attributes(conn, con->window->id, XCB_CW_EVENT_MASK, values);
733 DLOG("mapping child window (serial %d)\n", cookie.sequence);
734 state->child_mapped = true;
737 cookie = xcb_map_window(conn, con->frame);
739 values[0] = FRAME_EVENT_MASK;
740 xcb_change_window_attributes(conn, con->frame, XCB_CW_EVENT_MASK, values);
742 /* copy the pixmap contents to the frame window immediately after mapping */
743 if (con->pixmap != XCB_NONE)
744 xcb_copy_area(conn, con->pixmap, con->frame, con->pm_gc, 0, 0, 0, 0, con->rect.width, con->rect.height);
747 DLOG("mapping container %08x (serial %d)\n", con->frame, cookie.sequence);
748 state->mapped = con->mapped;
751 state->unmap_now = (state->mapped != con->mapped) && !con->mapped;
754 DLOG("Sending fake configure notify\n");
755 fake_absolute_configure_notify(con);
758 /* Handle all children and floating windows of this node. We recurse
759 * in focus order to display the focused client in a stack first when
760 * switching workspaces (reduces flickering). */
761 TAILQ_FOREACH(current, &(con->focus_head), focused)
762 x_push_node(current);
766 * Same idea as in x_push_node(), but this function only unmaps windows. It is
767 * necessary to split this up to handle new fullscreen clients properly: The
768 * new window needs to be mapped and focus needs to be set *before* the
769 * underlying windows are unmapped. Otherwise, focus will revert to the
770 * PointerRoot and will then be set to the new window, generating unnecessary
771 * FocusIn/FocusOut events.
774 static void x_push_node_unmaps(Con *con) {
778 //DLOG("Pushing changes (with unmaps) for node %p / %s\n", con, con->name);
779 state = state_for_frame(con->frame);
781 /* map/unmap if map state changed, also ensure that the child window
782 * is changed if we are mapped *and* in initial state (meaning the
783 * container was empty before, but now got a child) */
784 if (state->unmap_now) {
785 xcb_void_cookie_t cookie;
786 if (con->window != NULL) {
787 /* Set WM_STATE_WITHDRAWN, it seems like Java apps need it */
788 long data[] = { XCB_ICCCM_WM_STATE_WITHDRAWN, XCB_NONE };
789 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
790 A_WM_STATE, A_WM_STATE, 32, 2, data);
793 cookie = xcb_unmap_window(conn, con->frame);
794 DLOG("unmapping container (serial %d)\n", cookie.sequence);
795 /* we need to increase ignore_unmap for this container (if it
796 * contains a window) and for every window "under" this one which
797 * contains a window */
798 if (con->window != NULL) {
800 DLOG("ignore_unmap for con %p (frame 0x%08x) now %d\n", con, con->frame, con->ignore_unmap);
802 state->mapped = con->mapped;
805 /* handle all children and floating windows of this node */
806 TAILQ_FOREACH(current, &(con->nodes_head), nodes)
807 x_push_node_unmaps(current);
809 TAILQ_FOREACH(current, &(con->floating_head), floating_windows)
810 x_push_node_unmaps(current);
814 * Pushes all changes (state of each node, see x_push_node() and the window
817 * NOTE: We need to push the stack first so that the windows have the correct
818 * stacking order. This is relevant for workspace switching where we map the
819 * windows because mapping may generate EnterNotify events. When they are
820 * generated in the wrong order, this will cause focus problems when switching
824 void x_push_changes(Con *con) {
826 xcb_query_pointer_cookie_t pointercookie;
828 /* If we need to warp later, we request the pointer position as soon as possible */
830 pointercookie = xcb_query_pointer(conn, root);
833 DLOG("-- PUSHING WINDOW STACK --\n");
834 //DLOG("Disabling EnterNotify\n");
835 uint32_t values[1] = { XCB_NONE };
836 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
838 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
840 //DLOG("Done, EnterNotify disabled\n");
841 bool order_changed = false;
842 bool stacking_changed = false;
844 /* count first, necessary to (re)allocate memory for the bottom-to-top
845 * stack afterwards */
847 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state)
848 if (state->con && state->con->window)
851 if (cnt != btt_stack_num) {
852 btt_stack = srealloc(btt_stack, sizeof(xcb_window_t) * cnt);
856 xcb_window_t *walk = btt_stack;
858 /* X11 correctly represents the stack if we push it from bottom to top */
859 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
860 if (state->con && state->con->window)
861 memcpy(walk++, &(state->con->window->id), sizeof(xcb_window_t));
863 //DLOG("stack: 0x%08x\n", state->id);
864 con_state *prev = CIRCLEQ_PREV(state, state);
865 con_state *old_prev = CIRCLEQ_PREV(state, old_state);
866 if (prev != old_prev)
867 order_changed = true;
868 if ((state->initial || order_changed) && prev != CIRCLEQ_END(&state_head)) {
869 stacking_changed = true;
870 //DLOG("Stacking 0x%08x above 0x%08x\n", prev->id, state->id);
872 mask |= XCB_CONFIG_WINDOW_SIBLING;
873 mask |= XCB_CONFIG_WINDOW_STACK_MODE;
874 uint32_t values[] = {state->id, XCB_STACK_MODE_ABOVE};
876 xcb_configure_window(conn, prev->id, mask, values);
878 state->initial = false;
881 /* If we re-stacked something (or a new window appeared), we need to update
882 * the _NET_CLIENT_LIST_STACKING hint */
883 if (stacking_changed)
884 ewmh_update_client_list_stacking(btt_stack, btt_stack_num);
886 DLOG("PUSHING CHANGES\n");
890 xcb_query_pointer_reply_t *pointerreply = xcb_query_pointer_reply(conn, pointercookie, NULL);
892 ELOG("Could not query pointer position, not warping pointer\n");
894 int mid_x = warp_to->x + (warp_to->width / 2);
895 int mid_y = warp_to->y + (warp_to->height / 2);
897 Output *current = get_output_containing(pointerreply->root_x, pointerreply->root_y);
898 Output *target = get_output_containing(mid_x, mid_y);
899 if (current != target)
900 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0, mid_x, mid_y);
905 //DLOG("Re-enabling EnterNotify\n");
906 values[0] = FRAME_EVENT_MASK;
907 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
909 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
911 //DLOG("Done, EnterNotify re-enabled\n");
915 xcb_window_t to_focus = focused->frame;
916 if (focused->window != NULL)
917 to_focus = focused->window->id;
919 if (focused_id != to_focus) {
920 if (!focused->mapped) {
921 DLOG("Not updating focus (to %p / %s), focused window is not mapped.\n", focused, focused->name);
922 /* Invalidate focused_id to correctly focus new windows with the same ID */
923 focused_id = XCB_NONE;
925 bool set_focus = true;
926 if (focused->window != NULL &&
927 focused->window->needs_take_focus) {
928 DLOG("Updating focus by sending WM_TAKE_FOCUS to window 0x%08x (focused: %p / %s)\n",
929 to_focus, focused, focused->name);
930 send_take_focus(to_focus);
931 set_focus = !focused->window->doesnt_accept_focus;
932 DLOG("set_focus = %d\n", set_focus);
936 DLOG("Updating focus (focused: %p / %s)\n", focused, focused->name);
937 /* We remove XCB_EVENT_MASK_FOCUS_CHANGE from the event mask to get
938 * no focus change events for our own focus changes. We only want
939 * these generated by the clients. */
940 if (focused->window != NULL) {
941 values[0] = CHILD_EVENT_MASK & ~(XCB_EVENT_MASK_FOCUS_CHANGE);
942 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
944 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, to_focus, XCB_CURRENT_TIME);
945 if (focused->window != NULL) {
946 values[0] = CHILD_EVENT_MASK;
947 xcb_change_window_attributes(conn, focused->window->id, XCB_CW_EVENT_MASK, values);
950 ewmh_update_active_window(to_focus);
953 focused_id = to_focus;
957 if (focused_id == XCB_NONE) {
958 DLOG("Still no window focused, better set focus to the root window\n");
959 xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
964 DLOG("ENDING CHANGES\n");
966 /* Disable EnterWindow events for windows which will be unmapped in
967 * x_push_node_unmaps() now. Unmapping windows happens when switching
968 * workspaces. We want to avoid getting EnterNotifies during that phase
969 * because they would screw up our focus. One of these cases is having a
970 * stack with two windows. If the first window is focused and gets
971 * unmapped, the second one appears under the cursor and therefore gets an
972 * EnterNotify event. */
973 values[0] = FRAME_EVENT_MASK & ~XCB_EVENT_MASK_ENTER_WINDOW;
974 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
975 if (!state->unmap_now)
977 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);
980 /* Push all pending unmaps */
981 x_push_node_unmaps(con);
983 /* save the current stack as old stack */
984 CIRCLEQ_FOREACH(state, &state_head, state) {
985 CIRCLEQ_REMOVE(&old_state_head, state, old_state);
986 CIRCLEQ_INSERT_TAIL(&old_state_head, state, old_state);
988 //CIRCLEQ_FOREACH(state, &old_state_head, old_state) {
989 // DLOG("old stack: 0x%08x\n", state->id);
996 * Raises the specified container in the internal stack of X windows. The
997 * next call to x_push_changes() will make the change visible in X11.
1000 void x_raise_con(Con *con) {
1002 state = state_for_frame(con->frame);
1003 //DLOG("raising in new stack: %p / %s / %s / xid %08x\n", con, con->name, con->window ? con->window->name_json : "", state->id);
1005 CIRCLEQ_REMOVE(&state_head, state, state);
1006 CIRCLEQ_INSERT_HEAD(&state_head, state, state);
1010 * Sets the WM_NAME property (so, no UTF8, but used only for debugging anyways)
1011 * of the given name. Used for properly tagging the windows for easily spotting
1012 * i3 windows in xwininfo -root -all.
1015 void x_set_name(Con *con, const char *name) {
1016 struct con_state *state;
1018 if ((state = state_for_frame(con->frame)) == NULL) {
1019 ELOG("window state not found\n");
1024 state->name = sstrdup(name);
1028 * Sets up i3 specific atoms (I3_SOCKET_PATH and I3_CONFIG_PATH)
1031 void x_set_i3_atoms(void) {
1032 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SOCKET_PATH, A_UTF8_STRING, 8,
1033 (current_socketpath == NULL ? 0 : strlen(current_socketpath)),
1034 current_socketpath);
1035 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_CONFIG_PATH, A_UTF8_STRING, 8,
1036 strlen(current_configpath), current_configpath);
1037 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, root, A_I3_SHMLOG_PATH, A_UTF8_STRING, 8,
1038 strlen(shmlogname), shmlogname);
1042 * Set warp_to coordinates. This will trigger on the next call to
1046 void x_set_warp_to(Rect *rect)
1052 * Applies the given mask to the event mask of every i3 window decoration X11
1053 * window. This is useful to disable EnterNotify while resizing so that focus
1057 void x_mask_event_mask(uint32_t mask) {
1058 uint32_t values[] = { FRAME_EVENT_MASK & mask };
1061 CIRCLEQ_FOREACH_REVERSE(state, &state_head, state) {
1063 xcb_change_window_attributes(conn, state->id, XCB_CW_EVENT_MASK, values);