2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
6 * © 2009-2011 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * For more information on RandR, please see the X.org RandR specification at
11 * http://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt
12 * (take your time to read it completely, it answers all questions).
17 #include <xcb/randr.h>
21 /* While a clean namespace is usually a pretty good thing, we really need
22 * to use shorter names than the whole xcb_randr_* default names. */
23 typedef xcb_randr_get_crtc_info_reply_t crtc_info;
24 typedef xcb_randr_get_screen_resources_current_reply_t resources_reply;
26 /* Pointer to the result of the query for primary output */
27 xcb_randr_get_output_primary_reply_t *primary;
29 /* Stores all outputs available in your current session. */
30 struct outputs_head outputs = TAILQ_HEAD_INITIALIZER(outputs);
32 static bool randr_disabled = false;
35 * Get a specific output by its internal X11 id. Used by randr_query_outputs
36 * to check if the output is new (only in the first scan) or if we are
40 static Output *get_output_by_id(xcb_randr_output_t id) {
42 TAILQ_FOREACH(output, &outputs, outputs)
50 * Returns the output with the given name if it is active (!) or NULL.
53 Output *get_output_by_name(const char *name) {
55 TAILQ_FOREACH(output, &outputs, outputs)
57 strcasecmp(output->name, name) == 0)
64 * Returns the first output which is active.
67 Output *get_first_output() {
70 TAILQ_FOREACH(output, &outputs, outputs)
78 * Returns the active (!) output which contains the coordinates x, y or NULL
79 * if there is no output which contains these coordinates.
82 Output *get_output_containing(int x, int y) {
84 TAILQ_FOREACH(output, &outputs, outputs) {
87 DLOG("comparing x=%d y=%d with x=%d and y=%d width %d height %d\n",
88 x, y, output->rect.x, output->rect.y, output->rect.width, output->rect.height);
89 if (x >= output->rect.x && x < (output->rect.x + output->rect.width) &&
90 y >= output->rect.y && y < (output->rect.y + output->rect.height))
98 * Gets the output which is the last one in the given direction, for example
99 * the output on the most bottom when direction == D_DOWN, the output most
100 * right when direction == D_RIGHT and so on.
102 * This function always returns a output.
105 Output *get_output_most(direction_t direction, Output *current) {
106 Output *output, *candidate = NULL;
108 TAILQ_FOREACH(output, &outputs, outputs) {
112 /* Repeated calls of WIN determine the winner of the comparison */
113 #define WIN(variable, condition) \
114 if (variable condition) { \
115 candidate = output; \
116 position = variable; \
120 if (((direction == D_UP) || (direction == D_DOWN)) &&
121 (current->rect.x != output->rect.x))
124 if (((direction == D_LEFT) || (direction == D_RIGHT)) &&
125 (current->rect.y != output->rect.y))
130 WIN(output->rect.y, <= position);
132 WIN(output->rect.y, >= position);
134 WIN(output->rect.x, <= position);
136 WIN(output->rect.x, >= position);
140 assert(candidate != NULL);
146 * Gets the output which is the next one in the given direction.
149 Output *get_output_next(direction_t direction, Output *current) {
150 Output *output, *candidate = NULL;
152 TAILQ_FOREACH(output, &outputs, outputs) {
156 if (((direction == D_UP) || (direction == D_DOWN)) &&
157 (current->rect.x != output->rect.x))
160 if (((direction == D_LEFT) || (direction == D_RIGHT)) &&
161 (current->rect.y != output->rect.y))
166 if (output->rect.y < current->rect.y &&
167 (!candidate || output->rect.y < candidate->rect.y))
171 if (output->rect.y > current->rect.y &&
172 (!candidate || output->rect.y > candidate->rect.y))
176 if (output->rect.x < current->rect.x &&
177 (!candidate || output->rect.x > candidate->rect.x))
181 if (output->rect.x > current->rect.x &&
182 (!candidate || output->rect.x < candidate->rect.x))
192 * Disables RandR support by creating exactly one output with the size of the
196 void disable_randr(xcb_connection_t *conn) {
197 DLOG("RandR extension unusable, disabling.\n");
199 Output *s = scalloc(sizeof(Output));
204 s->rect.width = root_screen->width_in_pixels;
205 s->rect.height = root_screen->height_in_pixels;
208 init_ws_for_output(s, output_get_content(s->con));
210 TAILQ_INSERT_TAIL(&outputs, s, outputs);
212 randr_disabled = true;
216 * Initializes a CT_OUTPUT Con (searches existing ones from inplace restart
217 * before) to use for the given Output.
220 void output_init_con(Output *output) {
221 Con *con = NULL, *current;
224 DLOG("init_con for output %s\n", output->name);
226 /* Search for a Con with that name directly below the root node. There
227 * might be one from a restored layout. */
228 TAILQ_FOREACH(current, &(croot->nodes_head), nodes) {
229 if (strcmp(current->name, output->name) != 0)
234 DLOG("Using existing con %p / %s\n", con, con->name);
239 con = con_new(croot, NULL);
241 con->name = sstrdup(output->name);
242 con->type = CT_OUTPUT;
243 con->layout = L_OUTPUT;
244 con_fix_percent(croot);
246 con->rect = output->rect;
250 asprintf(&name, "[i3 con] output %s", con->name);
251 x_set_name(con, name);
255 DLOG("Not adding workspace, this was a reused con\n");
259 DLOG("Changing layout, adding top/bottom dockarea\n");
260 Con *topdock = con_new(NULL, NULL);
261 topdock->type = CT_DOCKAREA;
262 topdock->layout = L_DOCKAREA;
263 topdock->orientation = VERT;
264 /* this container swallows dock clients */
265 Match *match = scalloc(sizeof(Match));
267 match->dock = M_DOCK_TOP;
268 match->insert_where = M_BELOW;
269 TAILQ_INSERT_TAIL(&(topdock->swallow_head), match, matches);
272 topdock->name = sstrdup("topdock");
274 asprintf(&name, "[i3 con] top dockarea %s", con->name);
275 x_set_name(topdock, name);
278 con_attach(topdock, con, false);
280 /* content container */
282 DLOG("adding main content container\n");
283 Con *content = con_new(NULL, NULL);
284 content->type = CT_CON;
286 content->name = sstrdup("content");
288 asprintf(&name, "[i3 con] content %s", con->name);
289 x_set_name(content, name);
291 con_attach(content, con, false);
293 /* bottom dock container */
294 Con *bottomdock = con_new(NULL, NULL);
295 bottomdock->type = CT_DOCKAREA;
296 bottomdock->layout = L_DOCKAREA;
297 bottomdock->orientation = VERT;
298 /* this container swallows dock clients */
299 match = scalloc(sizeof(Match));
301 match->dock = M_DOCK_BOTTOM;
302 match->insert_where = M_BELOW;
303 TAILQ_INSERT_TAIL(&(bottomdock->swallow_head), match, matches);
305 FREE(bottomdock->name);
306 bottomdock->name = sstrdup("bottomdock");
308 asprintf(&name, "[i3 con] bottom dockarea %s", con->name);
309 x_set_name(bottomdock, name);
312 con_attach(bottomdock, con, false);
316 * Initializes at least one workspace for this output, trying the following
317 * steps until there is at least one workspace:
319 * • Move existing workspaces, which are assigned to be on the given output, to
321 * • Create the first assigned workspace for this output.
322 * • Create the first unused workspace.
325 void init_ws_for_output(Output *output, Con *content) {
328 /* go through all assignments and move the existing workspaces to this output */
329 struct Workspace_Assignment *assignment;
330 TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
331 if (strcmp(assignment->output, output->name) != 0)
334 /* check if this workspace actually exists */
335 Con *workspace = NULL, *out;
336 TAILQ_FOREACH(out, &(croot->nodes_head), nodes)
337 GREP_FIRST(workspace, output_get_content(out),
338 !strcasecmp(child->name, assignment->name));
339 if (workspace == NULL)
342 /* check that this workspace is not already attached (that means the
343 * user configured this assignment twice) */
344 Con *workspace_out = con_get_output(workspace);
345 if (workspace_out == output->con) {
346 LOG("Workspace \"%s\" assigned to output \"%s\", but it is already "
347 "there. Do you have two assignment directives for the same "
348 "workspace in your configuration file?\n",
349 workspace->name, output->name);
353 /* if so, move it over */
354 LOG("Moving workspace \"%s\" from output \"%s\" to \"%s\" due to assignment\n",
355 workspace->name, workspace_out->name, output->name);
357 /* if the workspace is currently visible on that output, we need to
358 * switch to a different workspace - otherwise the output would end up
359 * with no active workspace */
360 bool visible = workspace_is_visible(workspace);
361 Con *previous = NULL;
362 if (visible && (previous = TAILQ_NEXT(workspace, focused))) {
363 LOG("Switching to previously used workspace \"%s\" on output \"%s\"\n",
364 previous->name, workspace_out->name);
365 workspace_show(previous);
368 con_detach(workspace);
369 con_attach(workspace, content, false);
371 /* In case the workspace we just moved was visible but there was no
372 * other workspace to switch to, we need to initialize the source
374 if (visible && previous == NULL) {
375 LOG("There is no workspace left on \"%s\", re-initializing\n",
376 workspace_out->name);
377 init_ws_for_output(get_output_by_name(workspace_out->name),
378 output_get_content(workspace_out));
379 DLOG("Done re-initializing, continuing with \"%s\"\n", output->name);
383 /* if a workspace exists, we are done now */
384 if (!TAILQ_EMPTY(&(content->nodes_head))) {
385 /* ensure that one of the workspaces is actually visible (in fullscreen
386 * mode), if they were invisible before, this might not be the case. */
388 GREP_FIRST(visible, content, child->fullscreen_mode == CF_OUTPUT);
390 visible = TAILQ_FIRST(&(content->nodes_head));
392 workspace_show(visible);
397 /* otherwise, we create the first assigned ws for this output */
398 TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
399 if (strcmp(assignment->output, output->name) != 0)
402 LOG("Initializing first assigned workspace \"%s\" for output \"%s\"\n",
403 assignment->name, assignment->output);
405 workspace_show_by_name(assignment->name);
409 /* if there is still no workspace, we create the first free workspace */
410 DLOG("Now adding a workspace\n");
412 /* add a workspace to this output */
415 Con *ws = con_new(NULL, NULL);
416 ws->type = CT_WORKSPACE;
418 /* try the configured workspace bindings first to find a free name */
420 TAILQ_FOREACH(bind, bindings, bindings) {
421 DLOG("binding with command %s\n", bind->command);
422 if (strlen(bind->command) < strlen("workspace ") ||
423 strncasecmp(bind->command, "workspace", strlen("workspace")) != 0)
425 DLOG("relevant command = %s\n", bind->command);
426 char *target = bind->command + strlen("workspace ");
427 /* We check if this is the workspace next/prev command. Beware: The
428 * workspace names "next" and "prev" are OK, so we check before
429 * stripping the double quotes */
430 if (strncasecmp(target, "next", strlen("next")) == 0 ||
431 strncasecmp(target, "prev", strlen("prev")) == 0)
436 ws->name = strdup(target);
437 if (ws->name[strlen(ws->name)-1] == '"')
438 ws->name[strlen(ws->name)-1] = '\0';
439 DLOG("trying name *%s*\n", ws->name);
442 TAILQ_FOREACH(out, &(croot->nodes_head), nodes)
443 GREP_FIRST(current, output_get_content(out), !strcasecmp(child->name, ws->name));
445 exists = (current != NULL);
447 /* Set ->num to the number of the workspace, if the name actually
448 * is a number or starts with a number */
450 long parsed_num = strtol(ws->name, &endptr, 10);
451 if (parsed_num == LONG_MIN ||
452 parsed_num == LONG_MAX ||
456 else ws->num = parsed_num;
457 LOG("Used number %d for workspace with name %s\n", ws->num, ws->name);
464 /* get the next unused workspace number */
465 DLOG("Getting next unused workspace by number\n");
471 asprintf(&(ws->name), "%d", c);
474 TAILQ_FOREACH(out, &(croot->nodes_head), nodes)
475 GREP_FIRST(current, output_get_content(out), !strcasecmp(child->name, ws->name));
476 exists = (current != NULL);
478 DLOG("result for ws %s / %d: exists = %d\n", ws->name, c, exists);
482 con_attach(ws, content, false);
484 asprintf(&name, "[i3 con] workspace %s", ws->name);
485 x_set_name(ws, name);
488 ws->fullscreen_mode = CF_OUTPUT;
490 /* If default_orientation is set to NO_ORIENTATION we determine
491 * orientation depending on output resolution. */
492 if (config.default_orientation == NO_ORIENTATION) {
493 ws->orientation = (output->rect.height > output->rect.width) ? VERT : HORIZ;
494 DLOG("Auto orientation. Workspace size set to (%d,%d), setting orientation to %d.\n",
495 output->rect.width, output->rect.height, ws->orientation);
497 ws->orientation = config.default_orientation;
501 /* TODO: Set focus in main.c */
506 * This function needs to be called when changing the mode of an output when
507 * it already has some workspaces (or a bar window) assigned.
509 * It reconfigures the bar window for the new mode, copies the new rect into
510 * each workspace on this output and forces all windows on the affected
511 * workspaces to be reconfigured.
513 * It is necessary to call render_layout() afterwards.
516 static void output_change_mode(xcb_connection_t *conn, Output *output) {
517 //i3Font *font = load_font(conn, config.font);
519 DLOG("Output mode changed, updating rect\n");
520 assert(output->con != NULL);
521 output->con->rect = output->rect;
523 Con *content, *workspace, *child;
525 /* Point content to the container of the workspaces */
526 content = output_get_content(output->con);
528 /* If default_orientation is NO_ORIENTATION, we change the orientation of
529 * the workspaces and their childs depending on output resolution. This is
530 * only done for workspaces with maximum one child. */
531 if (config.default_orientation == NO_ORIENTATION) {
532 TAILQ_FOREACH(workspace, &(content->nodes_head), nodes) {
533 /* Workspaces with more than one child are left untouched because
534 * we do not want to change an existing layout. */
535 if (con_num_children(workspace) > 1)
538 workspace->orientation = (output->rect.height > output->rect.width) ? VERT : HORIZ;
539 DLOG("Setting workspace [%d,%s]'s orientation to %d.\n", workspace->num, workspace->name, workspace->orientation);
540 if ((child = TAILQ_FIRST(&(workspace->nodes_head)))) {
541 child->orientation = workspace->orientation;
542 DLOG("Setting child [%d,%s]'s orientation to %d.\n", child->num, child->name, child->orientation);
549 * Gets called by randr_query_outputs() for each output. The function adds new
550 * outputs to the list of outputs, checks if the mode of existing outputs has
551 * been changed or if an existing output has been disabled. It will then change
552 * either the "changed" or the "to_be_deleted" flag of the output, if
556 static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
557 xcb_randr_get_output_info_reply_t *output,
558 xcb_timestamp_t cts, resources_reply *res) {
559 /* each CRT controller has a position in which we are interested in */
562 Output *new = get_output_by_id(id);
563 bool existing = (new != NULL);
565 new = scalloc(sizeof(Output));
567 new->primary = (primary && primary->output == id);
569 asprintf(&new->name, "%.*s",
570 xcb_randr_get_output_info_name_length(output),
571 xcb_randr_get_output_info_name(output));
573 DLOG("found output with name %s\n", new->name);
575 /* Even if no CRTC is used at the moment, we store the output so that
576 * we do not need to change the list ever again (we only update the
578 if (output->crtc == XCB_NONE) {
581 TAILQ_INSERT_HEAD(&outputs, new, outputs);
582 else TAILQ_INSERT_TAIL(&outputs, new, outputs);
583 } else if (new->active)
584 new->to_be_disabled = true;
588 xcb_randr_get_crtc_info_cookie_t icookie;
589 icookie = xcb_randr_get_crtc_info(conn, output->crtc, cts);
590 if ((crtc = xcb_randr_get_crtc_info_reply(conn, icookie, NULL)) == NULL) {
591 DLOG("Skipping output %s: could not get CRTC (%p)\n",
597 bool updated = update_if_necessary(&(new->rect.x), crtc->x) |
598 update_if_necessary(&(new->rect.y), crtc->y) |
599 update_if_necessary(&(new->rect.width), crtc->width) |
600 update_if_necessary(&(new->rect.height), crtc->height);
602 new->active = (new->rect.width != 0 && new->rect.height != 0);
604 DLOG("width/height 0/0, disabling output\n");
608 DLOG("mode: %dx%d+%d+%d\n", new->rect.width, new->rect.height,
609 new->rect.x, new->rect.y);
611 /* If we don’t need to change an existing output or if the output
612 * does not exist in the first place, the case is simple: we either
613 * need to insert the new output or we are done. */
614 if (!updated || !existing) {
617 TAILQ_INSERT_HEAD(&outputs, new, outputs);
618 else TAILQ_INSERT_TAIL(&outputs, new, outputs);
627 * (Re-)queries the outputs via RandR and stores them in the list of outputs.
630 void randr_query_outputs() {
631 Output *output, *other, *first;
632 xcb_randr_get_output_primary_cookie_t pcookie;
633 xcb_randr_get_screen_resources_current_cookie_t rcookie;
634 resources_reply *res;
636 /* timestamp of the configuration so that we get consistent replies to all
637 * requests (if the configuration changes between our different calls) */
640 /* an output is VGA-1, LVDS-1, etc. (usually physical video outputs) */
641 xcb_randr_output_t *randr_outputs;
646 /* Get screen resources (primary output, crtcs, outputs, modes) */
647 rcookie = xcb_randr_get_screen_resources_current(conn, root);
648 pcookie = xcb_randr_get_output_primary(conn, root);
650 if ((primary = xcb_randr_get_output_primary_reply(conn, pcookie, NULL)) == NULL)
651 ELOG("Could not get RandR primary output\n");
652 else DLOG("primary output is %08x\n", primary->output);
653 if ((res = xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL)) == NULL) {
657 cts = res->config_timestamp;
659 int len = xcb_randr_get_screen_resources_current_outputs_length(res);
660 randr_outputs = xcb_randr_get_screen_resources_current_outputs(res);
662 /* Request information for each output */
663 xcb_randr_get_output_info_cookie_t ocookie[len];
664 for (int i = 0; i < len; i++)
665 ocookie[i] = xcb_randr_get_output_info(conn, randr_outputs[i], cts);
667 /* Loop through all outputs available for this X11 screen */
668 for (int i = 0; i < len; i++) {
669 xcb_randr_get_output_info_reply_t *output;
671 if ((output = xcb_randr_get_output_info_reply(conn, ocookie[i], NULL)) == NULL)
674 handle_output(conn, randr_outputs[i], output, cts, res);
678 /* Check for clones, disable the clones and reduce the mode to the
679 * lowest common mode */
680 TAILQ_FOREACH(output, &outputs, outputs) {
681 if (!output->active || output->to_be_disabled)
683 DLOG("output %p / %s, position (%d, %d), checking for clones\n",
684 output, output->name, output->rect.x, output->rect.y);
687 other != TAILQ_END(&outputs);
688 other = TAILQ_NEXT(other, outputs)) {
689 if (other == output || !other->active || other->to_be_disabled)
692 if (other->rect.x != output->rect.x ||
693 other->rect.y != output->rect.y)
696 DLOG("output %p has the same position, his mode = %d x %d\n",
697 other, other->rect.width, other->rect.height);
698 uint32_t width = min(other->rect.width, output->rect.width);
699 uint32_t height = min(other->rect.height, output->rect.height);
701 if (update_if_necessary(&(output->rect.width), width) |
702 update_if_necessary(&(output->rect.height), height))
703 output->changed = true;
705 update_if_necessary(&(other->rect.width), width);
706 update_if_necessary(&(other->rect.height), height);
708 DLOG("disabling output %p (%s)\n", other, other->name);
709 other->to_be_disabled = true;
711 DLOG("new output mode %d x %d, other mode %d x %d\n",
712 output->rect.width, output->rect.height,
713 other->rect.width, other->rect.height);
717 /* Ensure that all outputs which are active also have a con. This is
718 * necessary because in the next step, a clone might get disabled. Example:
719 * LVDS1 active, VGA1 gets activated as a clone of LVDS1 (has no con).
720 * LVDS1 gets disabled. */
721 TAILQ_FOREACH(output, &outputs, outputs) {
722 if (output->active && output->con == NULL) {
723 DLOG("Need to initialize a Con for output %s\n", output->name);
724 output_init_con(output);
725 output->changed = false;
729 /* Handle outputs which have a new mode or are disabled now (either
730 * because the user disabled them or because they are clones) */
731 TAILQ_FOREACH(output, &outputs, outputs) {
732 if (output->to_be_disabled) {
733 output->active = false;
734 DLOG("Output %s disabled, re-assigning workspaces/docks\n", output->name);
736 if ((first = get_first_output()) == NULL)
737 die("No usable outputs available\n");
739 /* TODO: refactor the following code into a nice function. maybe
740 * use an on_destroy callback which is implement differently for
741 * different container types (CT_CONTENT vs. CT_DOCKAREA)? */
742 Con *first_content = output_get_content(first->con);
744 if (output->con != NULL) {
745 /* We need to move the workspaces from the disappearing output to the first output */
746 /* 1: Get the con to focus next, if the disappearing ws is focused */
748 if (TAILQ_FIRST(&(croot->focus_head)) == output->con) {
749 DLOG("This output (%p) was focused! Getting next\n", output->con);
750 next = con_next_focused(output->con);
751 DLOG("next = %p\n", next);
754 /* 2: iterate through workspaces and re-assign them */
756 Con *old_content = output_get_content(output->con);
757 while (!TAILQ_EMPTY(&(old_content->nodes_head))) {
758 current = TAILQ_FIRST(&(old_content->nodes_head));
759 DLOG("Detaching current = %p / %s\n", current, current->name);
761 DLOG("Re-attaching current = %p / %s\n", current, current->name);
762 con_attach(current, first_content, false);
763 DLOG("Done, next\n");
765 DLOG("re-attached all workspaces\n");
768 DLOG("now focusing next = %p\n", next);
772 /* 3: move the dock clients to the first output */
774 TAILQ_FOREACH(child, &(output->con->nodes_head), nodes) {
775 if (child->type != CT_DOCKAREA)
777 DLOG("Handling dock con %p\n", child);
779 while (!TAILQ_EMPTY(&(child->nodes_head))) {
780 dock = TAILQ_FIRST(&(child->nodes_head));
783 nc = con_for_window(first->con, dock->window, &match);
784 DLOG("Moving dock client %p to nc %p\n", dock, nc);
786 DLOG("Re-attaching\n");
787 con_attach(dock, nc, false);
792 DLOG("destroying disappearing con %p\n", output->con);
793 tree_close(output->con, DONT_KILL_WINDOW, true, false);
794 DLOG("Done. Should be fine now\n");
798 output->to_be_disabled = false;
799 output->changed = false;
802 if (output->changed) {
803 output_change_mode(conn, output);
804 output->changed = false;
808 if (TAILQ_EMPTY(&outputs)) {
809 ELOG("No outputs found via RandR, disabling\n");
813 ewmh_update_workarea();
815 /* Just go through each active output and assign one workspace */
816 TAILQ_FOREACH(output, &outputs, outputs) {
819 Con *content = output_get_content(output->con);
820 if (!TAILQ_EMPTY(&(content->nodes_head)))
822 DLOG("Should add ws for output %s\n", output->name);
823 init_ws_for_output(output, content);
826 /* Focus the primary screen, if possible */
827 TAILQ_FOREACH(output, &outputs, outputs) {
828 if (!output->primary || !output->con)
831 DLOG("Focusing primary output %s\n", output->name);
832 con_focus(con_descend_focused(output->con));
835 /* render_layout flushes */
843 * We have just established a connection to the X server and need the initial
844 * XRandR information to setup workspaces for each screen.
847 void randr_init(int *event_base) {
848 const xcb_query_extension_reply_t *extreply;
850 extreply = xcb_get_extension_data(conn, &xcb_randr_id);
851 if (!extreply->present)
853 else randr_query_outputs();
855 if (event_base != NULL)
856 *event_base = extreply->first_event;
858 xcb_randr_select_input(conn, root,
859 XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE |
860 XCB_RANDR_NOTIFY_MASK_OUTPUT_CHANGE |
861 XCB_RANDR_NOTIFY_MASK_CRTC_CHANGE |
862 XCB_RANDR_NOTIFY_MASK_OUTPUT_PROPERTY);