2 #define I3__FILE__ "randr.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
9 * For more information on RandR, please see the X.org RandR specification at
10 * http://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt
11 * (take your time to read it completely, it answers all questions).
17 #include <xcb/randr.h>
19 /* While a clean namespace is usually a pretty good thing, we really need
20 * to use shorter names than the whole xcb_randr_* default names. */
21 typedef xcb_randr_get_crtc_info_reply_t crtc_info;
22 typedef xcb_randr_get_screen_resources_current_reply_t resources_reply;
24 /* Pointer to the result of the query for primary output */
25 xcb_randr_get_output_primary_reply_t *primary;
27 /* Stores all outputs available in your current session. */
28 struct outputs_head outputs = TAILQ_HEAD_INITIALIZER(outputs);
30 /* This is the output covering the root window */
31 static Output *root_output;
34 * Get a specific output by its internal X11 id. Used by randr_query_outputs
35 * to check if the output is new (only in the first scan) or if we are
39 static Output *get_output_by_id(xcb_randr_output_t id) {
41 TAILQ_FOREACH(output, &outputs, outputs)
49 * Returns the output with the given name if it is active (!) or NULL.
52 Output *get_output_by_name(const char *name) {
54 TAILQ_FOREACH(output, &outputs, outputs)
56 strcasecmp(output->name, name) == 0)
63 * Returns the first output which is active.
66 Output *get_first_output(void) {
69 TAILQ_FOREACH(output, &outputs, outputs)
73 die("No usable outputs available.\n");
77 * Check whether there are any active outputs (excluding the root output).
80 static bool any_randr_output_active(void) {
83 TAILQ_FOREACH(output, &outputs, outputs) {
84 if (output != root_output && !output->to_be_disabled && output->active)
92 * Returns the active (!) output which contains the coordinates x, y or NULL
93 * if there is no output which contains these coordinates.
96 Output *get_output_containing(unsigned int x, unsigned int y) {
98 TAILQ_FOREACH(output, &outputs, outputs) {
101 DLOG("comparing x=%d y=%d with x=%d and y=%d width %d height %d\n",
102 x, y, output->rect.x, output->rect.y, output->rect.width, output->rect.height);
103 if (x >= output->rect.x && x < (output->rect.x + output->rect.width) &&
104 y >= output->rect.y && y < (output->rect.y + output->rect.height))
112 * In contained_by_output, we check if any active output contains part of the container.
113 * We do this by checking if the output rect is intersected by the Rect.
114 * This is the 2-dimensional counterpart of get_output_containing.
115 * Since we don't actually need the outputs intersected by the given Rect (There could
116 * be many), we just return true or false for convenience.
119 bool contained_by_output(Rect rect) {
121 int lx = rect.x, uy = rect.y;
122 int rx = rect.x + rect.width, by = rect.y + rect.height;
123 TAILQ_FOREACH(output, &outputs, outputs) {
126 DLOG("comparing x=%d y=%d with x=%d and y=%d width %d height %d\n",
127 rect.x, rect.y, output->rect.x, output->rect.y, output->rect.width, output->rect.height);
128 if (rx >= (int)output->rect.x && lx <= (int)(output->rect.x + output->rect.width) &&
129 by >= (int)output->rect.y && uy <= (int)(output->rect.y + output->rect.height))
136 * Like get_output_next with close_far == CLOSEST_OUTPUT, but wraps.
138 * For example if get_output_next(D_DOWN, x, FARTHEST_OUTPUT) = NULL, then
139 * get_output_next_wrap(D_DOWN, x) will return the topmost output.
141 * This function always returns a output: if no active outputs can be found,
142 * current itself is returned.
145 Output *get_output_next_wrap(direction_t direction, Output *current) {
146 Output *best = get_output_next(direction, current, CLOSEST_OUTPUT);
147 /* If no output can be found, wrap */
149 direction_t opposite;
150 if (direction == D_RIGHT)
152 else if (direction == D_LEFT)
154 else if (direction == D_DOWN)
158 best = get_output_next(opposite, current, FARTHEST_OUTPUT);
162 DLOG("current = %s, best = %s\n", current->name, best->name);
167 * Gets the output which is the next one in the given direction.
169 * If close_far == CLOSEST_OUTPUT, then the output next to the current one will
170 * selected. If close_far == FARTHEST_OUTPUT, the output which is the last one
171 * in the given direction will be selected.
173 * NULL will be returned when no active outputs are present in the direction
174 * specified (note that “current” counts as such an output).
177 Output *get_output_next(direction_t direction, Output *current, output_close_far_t close_far) {
178 Rect *cur = &(current->rect),
182 TAILQ_FOREACH(output, &outputs, outputs) {
186 other = &(output->rect);
188 if ((direction == D_RIGHT && other->x > cur->x) ||
189 (direction == D_LEFT && other->x < cur->x)) {
190 /* Skip the output when it doesn’t overlap the other one’s y
191 * coordinate at all. */
192 if ((other->y + other->height) <= cur->y ||
193 (cur->y + cur->height) <= other->y)
195 } else if ((direction == D_DOWN && other->y > cur->y) ||
196 (direction == D_UP && other->y < cur->y)) {
197 /* Skip the output when it doesn’t overlap the other one’s x
198 * coordinate at all. */
199 if ((other->x + other->width) <= cur->x ||
200 (cur->x + cur->width) <= other->x)
205 /* No candidate yet? Start with this one. */
211 if (close_far == CLOSEST_OUTPUT) {
212 /* Is this output better (closer to the current output) than our
213 * current best bet? */
214 if ((direction == D_RIGHT && other->x < best->rect.x) ||
215 (direction == D_LEFT && other->x > best->rect.x) ||
216 (direction == D_DOWN && other->y < best->rect.y) ||
217 (direction == D_UP && other->y > best->rect.y)) {
222 /* Is this output better (farther to the current output) than our
223 * current best bet? */
224 if ((direction == D_RIGHT && other->x > best->rect.x) ||
225 (direction == D_LEFT && other->x < best->rect.x) ||
226 (direction == D_DOWN && other->y > best->rect.y) ||
227 (direction == D_UP && other->y < best->rect.y)) {
234 DLOG("current = %s, best = %s\n", current->name, (best ? best->name : "NULL"));
239 * Creates an output covering the root window.
242 Output *create_root_output(xcb_connection_t *conn) {
243 Output *s = scalloc(1, sizeof(Output));
248 s->rect.width = root_screen->width_in_pixels;
249 s->rect.height = root_screen->height_in_pixels;
256 * Initializes a CT_OUTPUT Con (searches existing ones from inplace restart
257 * before) to use for the given Output.
260 void output_init_con(Output *output) {
261 Con *con = NULL, *current;
264 DLOG("init_con for output %s\n", output->name);
266 /* Search for a Con with that name directly below the root node. There
267 * might be one from a restored layout. */
268 TAILQ_FOREACH(current, &(croot->nodes_head), nodes) {
269 if (strcmp(current->name, output->name) != 0)
274 DLOG("Using existing con %p / %s\n", con, con->name);
279 con = con_new(croot, NULL);
281 con->name = sstrdup(output->name);
282 con->type = CT_OUTPUT;
283 con->layout = L_OUTPUT;
284 con_fix_percent(croot);
286 con->rect = output->rect;
290 sasprintf(&name, "[i3 con] output %s", con->name);
291 x_set_name(con, name);
295 DLOG("Not adding workspace, this was a reused con\n");
299 DLOG("Changing layout, adding top/bottom dockarea\n");
300 Con *topdock = con_new(NULL, NULL);
301 topdock->type = CT_DOCKAREA;
302 topdock->layout = L_DOCKAREA;
303 /* this container swallows dock clients */
304 Match *match = scalloc(1, sizeof(Match));
306 match->dock = M_DOCK_TOP;
307 match->insert_where = M_BELOW;
308 TAILQ_INSERT_TAIL(&(topdock->swallow_head), match, matches);
311 topdock->name = sstrdup("topdock");
313 sasprintf(&name, "[i3 con] top dockarea %s", con->name);
314 x_set_name(topdock, name);
317 con_attach(topdock, con, false);
319 /* content container */
321 DLOG("adding main content container\n");
322 Con *content = con_new(NULL, NULL);
323 content->type = CT_CON;
324 content->layout = L_SPLITH;
326 content->name = sstrdup("content");
328 sasprintf(&name, "[i3 con] content %s", con->name);
329 x_set_name(content, name);
331 con_attach(content, con, false);
333 /* bottom dock container */
334 Con *bottomdock = con_new(NULL, NULL);
335 bottomdock->type = CT_DOCKAREA;
336 bottomdock->layout = L_DOCKAREA;
337 /* this container swallows dock clients */
338 match = scalloc(1, sizeof(Match));
340 match->dock = M_DOCK_BOTTOM;
341 match->insert_where = M_BELOW;
342 TAILQ_INSERT_TAIL(&(bottomdock->swallow_head), match, matches);
344 FREE(bottomdock->name);
345 bottomdock->name = sstrdup("bottomdock");
347 sasprintf(&name, "[i3 con] bottom dockarea %s", con->name);
348 x_set_name(bottomdock, name);
351 con_attach(bottomdock, con, false);
355 * Initializes at least one workspace for this output, trying the following
356 * steps until there is at least one workspace:
358 * • Move existing workspaces, which are assigned to be on the given output, to
360 * • Create the first assigned workspace for this output.
361 * • Create the first unused workspace.
364 void init_ws_for_output(Output *output, Con *content) {
365 /* go through all assignments and move the existing workspaces to this output */
366 struct Workspace_Assignment *assignment;
367 TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
368 if (strcmp(assignment->output, output->name) != 0)
371 /* check if this workspace actually exists */
372 Con *workspace = NULL, *out;
373 TAILQ_FOREACH(out, &(croot->nodes_head), nodes)
374 GREP_FIRST(workspace, output_get_content(out),
375 !strcasecmp(child->name, assignment->name));
376 if (workspace == NULL)
379 /* check that this workspace is not already attached (that means the
380 * user configured this assignment twice) */
381 Con *workspace_out = con_get_output(workspace);
382 if (workspace_out == output->con) {
383 LOG("Workspace \"%s\" assigned to output \"%s\", but it is already "
384 "there. Do you have two assignment directives for the same "
385 "workspace in your configuration file?\n",
386 workspace->name, output->name);
390 /* if so, move it over */
391 LOG("Moving workspace \"%s\" from output \"%s\" to \"%s\" due to assignment\n",
392 workspace->name, workspace_out->name, output->name);
394 /* if the workspace is currently visible on that output, we need to
395 * switch to a different workspace - otherwise the output would end up
396 * with no active workspace */
397 bool visible = workspace_is_visible(workspace);
398 Con *previous = NULL;
399 if (visible && (previous = TAILQ_NEXT(workspace, focused))) {
400 LOG("Switching to previously used workspace \"%s\" on output \"%s\"\n",
401 previous->name, workspace_out->name);
402 workspace_show(previous);
405 /* Render the output on which the workspace was to get correct Rects.
406 * Then, we need to work with the "content" container, since we cannot
407 * be sure that the workspace itself was rendered at all (in case it’s
408 * invisible, it won’t be rendered). */
409 render_con(workspace_out, false);
410 Con *ws_out_content = output_get_content(workspace_out);
413 TAILQ_FOREACH(floating_con, &(workspace->floating_head), floating_windows)
414 /* NB: We use output->con here because content is not yet rendered,
415 * so it has a rect of {0, 0, 0, 0}. */
416 floating_fix_coordinates(floating_con, &(ws_out_content->rect), &(output->con->rect));
418 con_detach(workspace);
419 con_attach(workspace, content, false);
421 /* In case the workspace we just moved was visible but there was no
422 * other workspace to switch to, we need to initialize the source
424 if (visible && previous == NULL) {
425 LOG("There is no workspace left on \"%s\", re-initializing\n",
426 workspace_out->name);
427 init_ws_for_output(get_output_by_name(workspace_out->name),
428 output_get_content(workspace_out));
429 DLOG("Done re-initializing, continuing with \"%s\"\n", output->name);
433 /* if a workspace exists, we are done now */
434 if (!TAILQ_EMPTY(&(content->nodes_head))) {
435 /* ensure that one of the workspaces is actually visible (in fullscreen
436 * mode), if they were invisible before, this might not be the case. */
438 GREP_FIRST(visible, content, child->fullscreen_mode == CF_OUTPUT);
440 visible = TAILQ_FIRST(&(content->nodes_head));
442 workspace_show(visible);
447 /* otherwise, we create the first assigned ws for this output */
448 TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) {
449 if (strcmp(assignment->output, output->name) != 0)
452 LOG("Initializing first assigned workspace \"%s\" for output \"%s\"\n",
453 assignment->name, assignment->output);
455 workspace_show_by_name(assignment->name);
459 /* if there is still no workspace, we create the first free workspace */
460 DLOG("Now adding a workspace\n");
461 Con *ws = create_workspace_on_output(output, content);
463 /* TODO: Set focus in main.c */
468 * This function needs to be called when changing the mode of an output when
469 * it already has some workspaces (or a bar window) assigned.
471 * It reconfigures the bar window for the new mode, copies the new rect into
472 * each workspace on this output and forces all windows on the affected
473 * workspaces to be reconfigured.
475 * It is necessary to call render_layout() afterwards.
478 static void output_change_mode(xcb_connection_t *conn, Output *output) {
479 DLOG("Output mode changed, updating rect\n");
480 assert(output->con != NULL);
481 output->con->rect = output->rect;
483 Con *content, *workspace, *child;
485 /* Point content to the container of the workspaces */
486 content = output_get_content(output->con);
488 /* Fix the position of all floating windows on this output.
489 * The 'rect' of each workspace will be updated in src/render.c. */
490 TAILQ_FOREACH(workspace, &(content->nodes_head), nodes) {
491 TAILQ_FOREACH(child, &(workspace->floating_head), floating_windows) {
492 floating_fix_coordinates(child, &(workspace->rect), &(output->con->rect));
496 /* If default_orientation is NO_ORIENTATION, we change the orientation of
497 * the workspaces and their childs depending on output resolution. This is
498 * only done for workspaces with maximum one child. */
499 if (config.default_orientation == NO_ORIENTATION) {
500 TAILQ_FOREACH(workspace, &(content->nodes_head), nodes) {
501 /* Workspaces with more than one child are left untouched because
502 * we do not want to change an existing layout. */
503 if (con_num_children(workspace) > 1)
506 workspace->layout = (output->rect.height > output->rect.width) ? L_SPLITV : L_SPLITH;
507 DLOG("Setting workspace [%d,%s]'s layout to %d.\n", workspace->num, workspace->name, workspace->layout);
508 if ((child = TAILQ_FIRST(&(workspace->nodes_head)))) {
509 if (child->layout == L_SPLITV || child->layout == L_SPLITH)
510 child->layout = workspace->layout;
511 DLOG("Setting child [%d,%s]'s layout to %d.\n", child->num, child->name, child->layout);
518 * Gets called by randr_query_outputs() for each output. The function adds new
519 * outputs to the list of outputs, checks if the mode of existing outputs has
520 * been changed or if an existing output has been disabled. It will then change
521 * either the "changed" or the "to_be_deleted" flag of the output, if
525 static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id,
526 xcb_randr_get_output_info_reply_t *output,
527 xcb_timestamp_t cts, resources_reply *res) {
528 /* each CRT controller has a position in which we are interested in */
531 Output *new = get_output_by_id(id);
532 bool existing = (new != NULL);
534 new = scalloc(1, sizeof(Output));
536 new->primary = (primary && primary->output == id);
538 sasprintf(&new->name, "%.*s",
539 xcb_randr_get_output_info_name_length(output),
540 xcb_randr_get_output_info_name(output));
542 DLOG("found output with name %s\n", new->name);
544 /* Even if no CRTC is used at the moment, we store the output so that
545 * we do not need to change the list ever again (we only update the
547 if (output->crtc == XCB_NONE) {
550 TAILQ_INSERT_HEAD(&outputs, new, outputs);
552 TAILQ_INSERT_TAIL(&outputs, new, outputs);
553 } else if (new->active)
554 new->to_be_disabled = true;
558 xcb_randr_get_crtc_info_cookie_t icookie;
559 icookie = xcb_randr_get_crtc_info(conn, output->crtc, cts);
560 if ((crtc = xcb_randr_get_crtc_info_reply(conn, icookie, NULL)) == NULL) {
561 DLOG("Skipping output %s: could not get CRTC (%p)\n",
567 bool updated = update_if_necessary(&(new->rect.x), crtc->x) |
568 update_if_necessary(&(new->rect.y), crtc->y) |
569 update_if_necessary(&(new->rect.width), crtc->width) |
570 update_if_necessary(&(new->rect.height), crtc->height);
572 new->active = (new->rect.width != 0 && new->rect.height != 0);
574 DLOG("width/height 0/0, disabling output\n");
578 DLOG("mode: %dx%d+%d+%d\n", new->rect.width, new->rect.height,
579 new->rect.x, new->rect.y);
581 /* If we don’t need to change an existing output or if the output
582 * does not exist in the first place, the case is simple: we either
583 * need to insert the new output or we are done. */
584 if (!updated || !existing) {
587 TAILQ_INSERT_HEAD(&outputs, new, outputs);
589 TAILQ_INSERT_TAIL(&outputs, new, outputs);
598 * (Re-)queries the outputs via RandR and stores them in the list of outputs.
600 * If no outputs are found use the root window.
603 void randr_query_outputs(void) {
604 Output *output, *other, *first;
605 xcb_randr_get_output_primary_cookie_t pcookie;
606 xcb_randr_get_screen_resources_current_cookie_t rcookie;
608 /* timestamp of the configuration so that we get consistent replies to all
609 * requests (if the configuration changes between our different calls) */
612 /* an output is VGA-1, LVDS-1, etc. (usually physical video outputs) */
613 xcb_randr_output_t *randr_outputs;
615 /* Get screen resources (primary output, crtcs, outputs, modes) */
616 rcookie = xcb_randr_get_screen_resources_current(conn, root);
617 pcookie = xcb_randr_get_output_primary(conn, root);
619 if ((primary = xcb_randr_get_output_primary_reply(conn, pcookie, NULL)) == NULL)
620 ELOG("Could not get RandR primary output\n");
622 DLOG("primary output is %08x\n", primary->output);
624 resources_reply *res = xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL);
626 ELOG("Could not query screen resources.\n");
628 cts = res->config_timestamp;
630 int len = xcb_randr_get_screen_resources_current_outputs_length(res);
631 randr_outputs = xcb_randr_get_screen_resources_current_outputs(res);
633 /* Request information for each output */
634 xcb_randr_get_output_info_cookie_t ocookie[len];
635 for (int i = 0; i < len; i++)
636 ocookie[i] = xcb_randr_get_output_info(conn, randr_outputs[i], cts);
638 /* Loop through all outputs available for this X11 screen */
639 for (int i = 0; i < len; i++) {
640 xcb_randr_get_output_info_reply_t *output;
642 if ((output = xcb_randr_get_output_info_reply(conn, ocookie[i], NULL)) == NULL)
645 handle_output(conn, randr_outputs[i], output, cts, res);
650 /* If there's no randr output, enable the output covering the root window. */
651 if (any_randr_output_active()) {
652 DLOG("Active RandR output found. Disabling root output.\n");
653 if (root_output->active)
654 root_output->to_be_disabled = true;
656 DLOG("No active RandR output found. Enabling root output.\n");
657 root_output->active = true;
660 /* Check for clones, disable the clones and reduce the mode to the
661 * lowest common mode */
662 TAILQ_FOREACH(output, &outputs, outputs) {
663 if (!output->active || output->to_be_disabled)
665 DLOG("output %p / %s, position (%d, %d), checking for clones\n",
666 output, output->name, output->rect.x, output->rect.y);
669 other != TAILQ_END(&outputs);
670 other = TAILQ_NEXT(other, outputs)) {
671 if (other == output || !other->active || other->to_be_disabled)
674 if (other->rect.x != output->rect.x ||
675 other->rect.y != output->rect.y)
678 DLOG("output %p has the same position, his mode = %d x %d\n",
679 other, other->rect.width, other->rect.height);
680 uint32_t width = min(other->rect.width, output->rect.width);
681 uint32_t height = min(other->rect.height, output->rect.height);
683 if (update_if_necessary(&(output->rect.width), width) |
684 update_if_necessary(&(output->rect.height), height))
685 output->changed = true;
687 update_if_necessary(&(other->rect.width), width);
688 update_if_necessary(&(other->rect.height), height);
690 DLOG("disabling output %p (%s)\n", other, other->name);
691 other->to_be_disabled = true;
693 DLOG("new output mode %d x %d, other mode %d x %d\n",
694 output->rect.width, output->rect.height,
695 other->rect.width, other->rect.height);
699 /* Ensure that all outputs which are active also have a con. This is
700 * necessary because in the next step, a clone might get disabled. Example:
701 * LVDS1 active, VGA1 gets activated as a clone of LVDS1 (has no con).
702 * LVDS1 gets disabled. */
703 TAILQ_FOREACH(output, &outputs, outputs) {
704 if (output->active && output->con == NULL) {
705 DLOG("Need to initialize a Con for output %s\n", output->name);
706 output_init_con(output);
707 output->changed = false;
711 /* Handle outputs which have a new mode or are disabled now (either
712 * because the user disabled them or because they are clones) */
713 TAILQ_FOREACH(output, &outputs, outputs) {
714 if (output->to_be_disabled) {
715 output->active = false;
716 DLOG("Output %s disabled, re-assigning workspaces/docks\n", output->name);
718 first = get_first_output();
720 /* TODO: refactor the following code into a nice function. maybe
721 * use an on_destroy callback which is implement differently for
722 * different container types (CT_CONTENT vs. CT_DOCKAREA)? */
723 Con *first_content = output_get_content(first->con);
725 if (output->con != NULL) {
726 /* We need to move the workspaces from the disappearing output to the first output */
727 /* 1: Get the con to focus next, if the disappearing ws is focused */
729 if (TAILQ_FIRST(&(croot->focus_head)) == output->con) {
730 DLOG("This output (%p) was focused! Getting next\n", output->con);
732 DLOG("next = %p\n", next);
735 /* 2: iterate through workspaces and re-assign them, fixing the coordinates
736 * of floating containers as we go */
738 Con *old_content = output_get_content(output->con);
739 while (!TAILQ_EMPTY(&(old_content->nodes_head))) {
740 current = TAILQ_FIRST(&(old_content->nodes_head));
741 if (current != next && TAILQ_EMPTY(&(current->focus_head))) {
742 /* the workspace is empty and not focused, get rid of it */
743 DLOG("Getting rid of current = %p / %s (empty, unfocused)\n", current, current->name);
744 tree_close(current, DONT_KILL_WINDOW, false, false);
747 DLOG("Detaching current = %p / %s\n", current, current->name);
749 DLOG("Re-attaching current = %p / %s\n", current, current->name);
750 con_attach(current, first_content, false);
751 DLOG("Fixing the coordinates of floating containers\n");
753 TAILQ_FOREACH(floating_con, &(current->floating_head), floating_windows)
754 floating_fix_coordinates(floating_con, &(output->con->rect), &(first->con->rect));
755 DLOG("Done, next\n");
757 DLOG("re-attached all workspaces\n");
760 DLOG("now focusing next = %p\n", next);
762 workspace_show(con_get_workspace(next));
765 /* 3: move the dock clients to the first output */
767 TAILQ_FOREACH(child, &(output->con->nodes_head), nodes) {
768 if (child->type != CT_DOCKAREA)
770 DLOG("Handling dock con %p\n", child);
772 while (!TAILQ_EMPTY(&(child->nodes_head))) {
773 dock = TAILQ_FIRST(&(child->nodes_head));
776 nc = con_for_window(first->con, dock->window, &match);
777 DLOG("Moving dock client %p to nc %p\n", dock, nc);
779 DLOG("Re-attaching\n");
780 con_attach(dock, nc, false);
785 DLOG("destroying disappearing con %p\n", output->con);
786 tree_close(output->con, DONT_KILL_WINDOW, true, false);
787 DLOG("Done. Should be fine now\n");
791 output->to_be_disabled = false;
792 output->changed = false;
795 if (output->changed) {
796 output_change_mode(conn, output);
797 output->changed = false;
801 /* Just go through each active output and assign one workspace */
802 TAILQ_FOREACH(output, &outputs, outputs) {
805 Con *content = output_get_content(output->con);
806 if (!TAILQ_EMPTY(&(content->nodes_head)))
808 DLOG("Should add ws for output %s\n", output->name);
809 init_ws_for_output(output, content);
812 /* Focus the primary screen, if possible */
813 TAILQ_FOREACH(output, &outputs, outputs) {
814 if (!output->primary || !output->con)
817 DLOG("Focusing primary output %s\n", output->name);
818 con_focus(con_descend_focused(output->con));
821 /* render_layout flushes */
829 * We have just established a connection to the X server and need the initial
830 * XRandR information to setup workspaces for each screen.
833 void randr_init(int *event_base) {
834 const xcb_query_extension_reply_t *extreply;
836 root_output = create_root_output(conn);
837 TAILQ_INSERT_TAIL(&outputs, root_output, outputs);
839 extreply = xcb_get_extension_data(conn, &xcb_randr_id);
840 if (!extreply->present) {
841 DLOG("RandR is not present, activating root output.\n");
842 root_output->active = true;
843 output_init_con(root_output);
844 init_ws_for_output(root_output, output_get_content(root_output->con));
849 randr_query_outputs();
851 if (event_base != NULL)
852 *event_base = extreply->first_event;
854 xcb_randr_select_input(conn, root,
855 XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE |
856 XCB_RANDR_NOTIFY_MASK_OUTPUT_CHANGE |
857 XCB_RANDR_NOTIFY_MASK_CRTC_CHANGE |
858 XCB_RANDR_NOTIFY_MASK_OUTPUT_PROPERTY);