/* * vim:ts=4:sw=4:expandtab * * i3 - an improved dynamic tiling window manager * © 2009 Michael Stapelberg and contributors (see also: LICENSE) * * For more information on RandR, please see the X.org RandR specification at * https://cgit.freedesktop.org/xorg/proto/randrproto/tree/randrproto.txt * (take your time to read it completely, it answers all questions). * */ #include "all.h" #include #include /* Pointer to the result of the query for primary output */ xcb_randr_get_output_primary_reply_t *primary; /* Stores all outputs available in your current session. */ struct outputs_head outputs = TAILQ_HEAD_INITIALIZER(outputs); /* This is the output covering the root window */ static Output *root_output; static bool has_randr_1_5 = false; /* * Get a specific output by its internal X11 id. Used by randr_query_outputs * to check if the output is new (only in the first scan) or if we are * re-scanning. * */ static Output *get_output_by_id(xcb_randr_output_t id) { Output *output; TAILQ_FOREACH(output, &outputs, outputs) if (output->id == id) return output; return NULL; } /* * Returns the output with the given name or NULL. * If require_active is true, only active outputs are considered. * */ Output *get_output_by_name(const char *name, const bool require_active) { Output *output; bool get_primary = (strcasecmp("primary", name) == 0); TAILQ_FOREACH(output, &outputs, outputs) { if (output->primary && get_primary) { return output; } if (require_active && !output->active) { continue; } struct output_name *output_name; SLIST_FOREACH(output_name, &output->names_head, names) { if (strcasecmp(output_name->name, name) == 0) { return output; } } } return NULL; } /* * Returns the first output which is active. * */ Output *get_first_output(void) { Output *output; TAILQ_FOREACH(output, &outputs, outputs) if (output->active) return output; die("No usable outputs available.\n"); } /* * Check whether there are any active outputs (excluding the root output). * */ static bool any_randr_output_active(void) { Output *output; TAILQ_FOREACH(output, &outputs, outputs) { if (output != root_output && !output->to_be_disabled && output->active) return true; } return false; } /* * Returns the active (!) output which contains the coordinates x, y or NULL * if there is no output which contains these coordinates. * */ Output *get_output_containing(unsigned int x, unsigned int y) { Output *output; TAILQ_FOREACH(output, &outputs, outputs) { if (!output->active) continue; DLOG("comparing x=%d y=%d with x=%d and y=%d width %d height %d\n", x, y, output->rect.x, output->rect.y, output->rect.width, output->rect.height); if (x >= output->rect.x && x < (output->rect.x + output->rect.width) && y >= output->rect.y && y < (output->rect.y + output->rect.height)) return output; } return NULL; } /* * Returns the active output which contains the midpoint of the given rect. If * such an output doesn't exist, returns the output which contains most of the * rectangle or NULL if there is no output which intersects with it. * */ Output *get_output_from_rect(Rect rect) { unsigned int mid_x = rect.x + rect.width / 2; unsigned int mid_y = rect.y + rect.height / 2; Output *output = get_output_containing(mid_x, mid_y); return output ? output : output_containing_rect(rect); } /* * Returns the active output which spans exactly the area specified by * rect or NULL if there is no output like this. * */ Output *get_output_with_dimensions(Rect rect) { Output *output; TAILQ_FOREACH(output, &outputs, outputs) { if (!output->active) continue; DLOG("comparing x=%d y=%d %dx%d with x=%d and y=%d %dx%d\n", rect.x, rect.y, rect.width, rect.height, output->rect.x, output->rect.y, output->rect.width, output->rect.height); if (rect.x == output->rect.x && rect.width == output->rect.width && rect.y == output->rect.y && rect.height == output->rect.height) return output; } return NULL; } /* * In output_containing_rect, we check if any active output contains part of the container. * We do this by checking if the output rect is intersected by the Rect. * This is the 2-dimensional counterpart of get_output_containing. * Returns the output with the maximum intersecting area. * */ Output *output_containing_rect(Rect rect) { Output *output; int lx = rect.x, uy = rect.y; int rx = rect.x + rect.width, by = rect.y + rect.height; long max_area = 0; Output *result = NULL; TAILQ_FOREACH(output, &outputs, outputs) { if (!output->active) continue; int lx_o = (int)output->rect.x, uy_o = (int)output->rect.y; int rx_o = (int)(output->rect.x + output->rect.width), by_o = (int)(output->rect.y + output->rect.height); DLOG("comparing x=%d y=%d with x=%d and y=%d width %d height %d\n", rect.x, rect.y, output->rect.x, output->rect.y, output->rect.width, output->rect.height); int left = max(lx, lx_o); int right = min(rx, rx_o); int bottom = min(by, by_o); int top = max(uy, uy_o); if (left < right && bottom > top) { long area = (right - left) * (bottom - top); if (area > max_area) { result = output; } } } return result; } /* * Like get_output_next with close_far == CLOSEST_OUTPUT, but wraps. * * For example if get_output_next(D_DOWN, x, FARTHEST_OUTPUT) = NULL, then * get_output_next_wrap(D_DOWN, x) will return the topmost output. * * This function always returns a output: if no active outputs can be found, * current itself is returned. * */ Output *get_output_next_wrap(direction_t direction, Output *current) { Output *best = get_output_next(direction, current, CLOSEST_OUTPUT); /* If no output can be found, wrap */ if (!best) { direction_t opposite; if (direction == D_RIGHT) opposite = D_LEFT; else if (direction == D_LEFT) opposite = D_RIGHT; else if (direction == D_DOWN) opposite = D_UP; else opposite = D_DOWN; best = get_output_next(opposite, current, FARTHEST_OUTPUT); } if (!best) best = current; DLOG("current = %s, best = %s\n", output_primary_name(current), output_primary_name(best)); return best; } /* * Gets the output which is the next one in the given direction. * * If close_far == CLOSEST_OUTPUT, then the output next to the current one will * selected. If close_far == FARTHEST_OUTPUT, the output which is the last one * in the given direction will be selected. * * NULL will be returned when no active outputs are present in the direction * specified (note that “current” counts as such an output). * */ Output *get_output_next(direction_t direction, Output *current, output_close_far_t close_far) { Rect *cur = &(current->rect), *other; Output *output, *best = NULL; TAILQ_FOREACH(output, &outputs, outputs) { if (!output->active) continue; other = &(output->rect); if ((direction == D_RIGHT && other->x > cur->x) || (direction == D_LEFT && other->x < cur->x)) { /* Skip the output when it doesn’t overlap the other one’s y * coordinate at all. */ if ((other->y + other->height) <= cur->y || (cur->y + cur->height) <= other->y) continue; } else if ((direction == D_DOWN && other->y > cur->y) || (direction == D_UP && other->y < cur->y)) { /* Skip the output when it doesn’t overlap the other one’s x * coordinate at all. */ if ((other->x + other->width) <= cur->x || (cur->x + cur->width) <= other->x) continue; } else continue; /* No candidate yet? Start with this one. */ if (!best) { best = output; continue; } if (close_far == CLOSEST_OUTPUT) { /* Is this output better (closer to the current output) than our * current best bet? */ if ((direction == D_RIGHT && other->x < best->rect.x) || (direction == D_LEFT && other->x > best->rect.x) || (direction == D_DOWN && other->y < best->rect.y) || (direction == D_UP && other->y > best->rect.y)) { best = output; continue; } } else { /* Is this output better (farther to the current output) than our * current best bet? */ if ((direction == D_RIGHT && other->x > best->rect.x) || (direction == D_LEFT && other->x < best->rect.x) || (direction == D_DOWN && other->y > best->rect.y) || (direction == D_UP && other->y < best->rect.y)) { best = output; continue; } } } DLOG("current = %s, best = %s\n", output_primary_name(current), (best ? output_primary_name(best) : "NULL")); return best; } /* * Creates an output covering the root window. * */ Output *create_root_output(xcb_connection_t *conn) { Output *s = scalloc(1, sizeof(Output)); s->active = false; s->rect.x = 0; s->rect.y = 0; s->rect.width = root_screen->width_in_pixels; s->rect.height = root_screen->height_in_pixels; struct output_name *output_name = scalloc(1, sizeof(struct output_name)); output_name->name = "xroot-0"; SLIST_INIT(&s->names_head); SLIST_INSERT_HEAD(&s->names_head, output_name, names); return s; } /* * Initializes a CT_OUTPUT Con (searches existing ones from inplace restart * before) to use for the given Output. * */ void output_init_con(Output *output) { Con *con = NULL, *current; bool reused = false; DLOG("init_con for output %s\n", output_primary_name(output)); /* Search for a Con with that name directly below the root node. There * might be one from a restored layout. */ TAILQ_FOREACH(current, &(croot->nodes_head), nodes) { if (strcmp(current->name, output_primary_name(output)) != 0) continue; con = current; reused = true; DLOG("Using existing con %p / %s\n", con, con->name); break; } if (con == NULL) { con = con_new(croot, NULL); FREE(con->name); con->name = sstrdup(output_primary_name(output)); con->type = CT_OUTPUT; con->layout = L_OUTPUT; con_fix_percent(croot); } con->rect = output->rect; output->con = con; char *name; sasprintf(&name, "[i3 con] output %s", con->name); x_set_name(con, name); FREE(name); if (reused) { DLOG("Not adding workspace, this was a reused con\n"); return; } DLOG("Changing layout, adding top/bottom dockarea\n"); Con *topdock = con_new(NULL, NULL); topdock->type = CT_DOCKAREA; topdock->layout = L_DOCKAREA; /* this container swallows dock clients */ Match *match = scalloc(1, sizeof(Match)); match_init(match); match->dock = M_DOCK_TOP; match->insert_where = M_BELOW; TAILQ_INSERT_TAIL(&(topdock->swallow_head), match, matches); FREE(topdock->name); topdock->name = sstrdup("topdock"); sasprintf(&name, "[i3 con] top dockarea %s", con->name); x_set_name(topdock, name); FREE(name); DLOG("attaching\n"); con_attach(topdock, con, false); /* content container */ DLOG("adding main content container\n"); Con *content = con_new(NULL, NULL); content->type = CT_CON; content->layout = L_SPLITH; FREE(content->name); content->name = sstrdup("content"); sasprintf(&name, "[i3 con] content %s", con->name); x_set_name(content, name); FREE(name); con_attach(content, con, false); /* bottom dock container */ Con *bottomdock = con_new(NULL, NULL); bottomdock->type = CT_DOCKAREA; bottomdock->layout = L_DOCKAREA; /* this container swallows dock clients */ match = scalloc(1, sizeof(Match)); match_init(match); match->dock = M_DOCK_BOTTOM; match->insert_where = M_BELOW; TAILQ_INSERT_TAIL(&(bottomdock->swallow_head), match, matches); FREE(bottomdock->name); bottomdock->name = sstrdup("bottomdock"); sasprintf(&name, "[i3 con] bottom dockarea %s", con->name); x_set_name(bottomdock, name); FREE(name); DLOG("attaching\n"); con_attach(bottomdock, con, false); /* Change focus to the content container */ TAILQ_REMOVE(&(con->focus_head), content, focused); TAILQ_INSERT_HEAD(&(con->focus_head), content, focused); } /* * Initializes at least one workspace for this output, trying the following * steps until there is at least one workspace: * * • Move existing workspaces, which are assigned to be on the given output, to * the output. * • Create the first assigned workspace for this output. * • Create the first unused workspace. * */ void init_ws_for_output(Output *output) { Con *content = output_get_content(output->con); Con *previous_focus = con_get_workspace(focused); /* go through all assignments and move the existing workspaces to this output */ struct Workspace_Assignment *assignment; TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) { if (!output_triggers_assignment(output, assignment)) { continue; } Con *workspace = get_existing_workspace_by_name(assignment->name); if (workspace == NULL) continue; /* check that this workspace is not already attached (that means the * user configured this assignment twice) */ Con *workspace_out = con_get_output(workspace); if (workspace_out == output->con) { LOG("Workspace \"%s\" assigned to output \"%s\", but it is already " "there. Do you have two assignment directives for the same " "workspace in your configuration file?\n", workspace->name, output_primary_name(output)); continue; } DLOG("Moving workspace \"%s\" from output \"%s\" to \"%s\" due to assignment\n", workspace->name, workspace_out->name, output_primary_name(output)); /* Need to copy output's rect since content is not yet rendered. We * can't call render_con here because render_output only proceeds if a * workspace exists. */ content->rect = output->con->rect; workspace_move_to_output(workspace, output); } /* Temporarily set the focused container, might not be initialized yet. */ focused = content; /* if a workspace exists, we are done now */ if (!TAILQ_EMPTY(&(content->nodes_head))) { /* ensure that one of the workspaces is actually visible (in fullscreen * mode), if they were invisible before, this might not be the case. */ Con *visible = NULL; GREP_FIRST(visible, content, child->fullscreen_mode == CF_OUTPUT); if (!visible) { visible = TAILQ_FIRST(&(content->nodes_head)); workspace_show(visible); } goto restore_focus; } /* otherwise, we create the first assigned ws for this output */ TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) { if (!output_triggers_assignment(output, assignment)) { continue; } LOG("Initializing first assigned workspace \"%s\" for output \"%s\"\n", assignment->name, assignment->output); workspace_show_by_name(assignment->name); goto restore_focus; } /* if there is still no workspace, we create the first free workspace */ DLOG("Now adding a workspace\n"); workspace_show(create_workspace_on_output(output, content)); restore_focus: if (previous_focus) { workspace_show(previous_focus); } } /* * This function needs to be called when changing the mode of an output when * it already has some workspaces (or a bar window) assigned. * * It reconfigures the bar window for the new mode, copies the new rect into * each workspace on this output and forces all windows on the affected * workspaces to be reconfigured. * * It is necessary to call render_layout() afterwards. * */ static void output_change_mode(xcb_connection_t *conn, Output *output) { DLOG("Output mode changed, updating rect\n"); assert(output->con != NULL); output->con->rect = output->rect; Con *content, *workspace, *child; /* Point content to the container of the workspaces */ content = output_get_content(output->con); /* Fix the position of all floating windows on this output. * The 'rect' of each workspace will be updated in src/render.c. */ TAILQ_FOREACH(workspace, &(content->nodes_head), nodes) { TAILQ_FOREACH(child, &(workspace->floating_head), floating_windows) { floating_fix_coordinates(child, &(workspace->rect), &(output->con->rect)); } } /* If default_orientation is NO_ORIENTATION, we change the orientation of * the workspaces and their children depending on output resolution. This is * only done for workspaces with maximum one child. */ if (config.default_orientation == NO_ORIENTATION) { TAILQ_FOREACH(workspace, &(content->nodes_head), nodes) { /* Workspaces with more than one child are left untouched because * we do not want to change an existing layout. */ if (con_num_children(workspace) > 1) continue; workspace->layout = (output->rect.height > output->rect.width) ? L_SPLITV : L_SPLITH; DLOG("Setting workspace [%d,%s]'s layout to %d.\n", workspace->num, workspace->name, workspace->layout); if ((child = TAILQ_FIRST(&(workspace->nodes_head)))) { if (child->layout == L_SPLITV || child->layout == L_SPLITH) child->layout = workspace->layout; DLOG("Setting child [%d,%s]'s layout to %d.\n", child->num, child->name, child->layout); } } } } /* * randr_query_outputs_15 uses RandR ≥ 1.5 to update outputs. * */ static bool randr_query_outputs_15(void) { #if XCB_RANDR_MINOR_VERSION < 5 return false; #else /* RandR 1.5 available at compile-time, i.e. libxcb is new enough */ if (!has_randr_1_5) { return false; } /* RandR 1.5 available at run-time (supported by the server and not * disabled by the user) */ DLOG("Querying outputs using RandR 1.5\n"); xcb_generic_error_t *err; xcb_randr_get_monitors_reply_t *monitors = xcb_randr_get_monitors_reply( conn, xcb_randr_get_monitors(conn, root, true), &err); if (err != NULL) { ELOG("Could not get RandR monitors: X11 error code %d\n", err->error_code); free(err); /* Fall back to RandR ≤ 1.4 */ return false; } /* Mark all outputs as to_be_disabled, since xcb_randr_get_monitors() will * only return active outputs. */ Output *output; TAILQ_FOREACH(output, &outputs, outputs) { if (output != root_output) { output->to_be_disabled = true; } } DLOG("%d RandR monitors found (timestamp %d)\n", xcb_randr_get_monitors_monitors_length(monitors), monitors->timestamp); xcb_randr_monitor_info_iterator_t iter; for (iter = xcb_randr_get_monitors_monitors_iterator(monitors); iter.rem; xcb_randr_monitor_info_next(&iter)) { const xcb_randr_monitor_info_t *monitor_info = iter.data; xcb_get_atom_name_reply_t *atom_reply = xcb_get_atom_name_reply( conn, xcb_get_atom_name(conn, monitor_info->name), &err); if (err != NULL) { ELOG("Could not get RandR monitor name: X11 error code %d\n", err->error_code); free(err); continue; } char *name; sasprintf(&name, "%.*s", xcb_get_atom_name_name_length(atom_reply), xcb_get_atom_name_name(atom_reply)); free(atom_reply); Output *new = get_output_by_name(name, false); if (new == NULL) { new = scalloc(1, sizeof(Output)); SLIST_INIT(&new->names_head); /* Register associated output names in addition to the monitor name */ xcb_randr_output_t *randr_outputs = xcb_randr_monitor_info_outputs(monitor_info); int randr_output_len = xcb_randr_monitor_info_outputs_length(monitor_info); for (int i = 0; i < randr_output_len; i++) { xcb_randr_output_t randr_output = randr_outputs[i]; xcb_randr_get_output_info_reply_t *info = xcb_randr_get_output_info_reply(conn, xcb_randr_get_output_info(conn, randr_output, monitors->timestamp), NULL); if (info != NULL && info->crtc != XCB_NONE) { char *oname; sasprintf(&oname, "%.*s", xcb_randr_get_output_info_name_length(info), xcb_randr_get_output_info_name(info)); if (strcmp(name, oname) != 0) { struct output_name *output_name = scalloc(1, sizeof(struct output_name)); output_name->name = sstrdup(oname); SLIST_INSERT_HEAD(&new->names_head, output_name, names); } else { free(oname); } } FREE(info); } /* Insert the monitor name last, so that it's used as the primary name */ struct output_name *output_name = scalloc(1, sizeof(struct output_name)); output_name->name = sstrdup(name); SLIST_INSERT_HEAD(&new->names_head, output_name, names); if (monitor_info->primary) { TAILQ_INSERT_HEAD(&outputs, new, outputs); } else { TAILQ_INSERT_TAIL(&outputs, new, outputs); } } /* We specified get_active == true in xcb_randr_get_monitors(), so we * will only receive active outputs. */ new->active = true; new->to_be_disabled = false; new->primary = monitor_info->primary; new->changed = update_if_necessary(&(new->rect.x), monitor_info->x) | update_if_necessary(&(new->rect.y), monitor_info->y) | update_if_necessary(&(new->rect.width), monitor_info->width) | update_if_necessary(&(new->rect.height), monitor_info->height); DLOG("name %s, x %d, y %d, width %d px, height %d px, width %d mm, height %d mm, primary %d, automatic %d\n", name, monitor_info->x, monitor_info->y, monitor_info->width, monitor_info->height, monitor_info->width_in_millimeters, monitor_info->height_in_millimeters, monitor_info->primary, monitor_info->automatic); free(name); } free(monitors); return true; #endif } /* * Gets called by randr_query_outputs_14() for each output. The function adds * new outputs to the list of outputs, checks if the mode of existing outputs * has been changed or if an existing output has been disabled. It will then * change either the "changed" or the "to_be_deleted" flag of the output, if * appropriate. * */ static void handle_output(xcb_connection_t *conn, xcb_randr_output_t id, xcb_randr_get_output_info_reply_t *output, xcb_timestamp_t cts, xcb_randr_get_screen_resources_current_reply_t *res) { /* each CRT controller has a position in which we are interested in */ xcb_randr_get_crtc_info_reply_t *crtc; Output *new = get_output_by_id(id); bool existing = (new != NULL); if (!existing) { new = scalloc(1, sizeof(Output)); SLIST_INIT(&new->names_head); } new->id = id; new->primary = (primary && primary->output == id); while (!SLIST_EMPTY(&new->names_head)) { FREE(SLIST_FIRST(&new->names_head)->name); struct output_name *old_head = SLIST_FIRST(&new->names_head); SLIST_REMOVE_HEAD(&new->names_head, names); FREE(old_head); } struct output_name *output_name = scalloc(1, sizeof(struct output_name)); sasprintf(&output_name->name, "%.*s", xcb_randr_get_output_info_name_length(output), xcb_randr_get_output_info_name(output)); SLIST_INSERT_HEAD(&new->names_head, output_name, names); DLOG("found output with name %s\n", output_primary_name(new)); /* Even if no CRTC is used at the moment, we store the output so that * we do not need to change the list ever again (we only update the * position/size) */ if (output->crtc == XCB_NONE) { if (!existing) { if (new->primary) TAILQ_INSERT_HEAD(&outputs, new, outputs); else TAILQ_INSERT_TAIL(&outputs, new, outputs); } else if (new->active) new->to_be_disabled = true; return; } xcb_randr_get_crtc_info_cookie_t icookie; icookie = xcb_randr_get_crtc_info(conn, output->crtc, cts); if ((crtc = xcb_randr_get_crtc_info_reply(conn, icookie, NULL)) == NULL) { DLOG("Skipping output %s: could not get CRTC (%p)\n", output_primary_name(new), crtc); free(new); return; } bool updated = update_if_necessary(&(new->rect.x), crtc->x) | update_if_necessary(&(new->rect.y), crtc->y) | update_if_necessary(&(new->rect.width), crtc->width) | update_if_necessary(&(new->rect.height), crtc->height); free(crtc); new->active = (new->rect.width != 0 && new->rect.height != 0); if (!new->active) { DLOG("width/height 0/0, disabling output\n"); return; } DLOG("mode: %dx%d+%d+%d\n", new->rect.width, new->rect.height, new->rect.x, new->rect.y); /* If we don’t need to change an existing output or if the output * does not exist in the first place, the case is simple: we either * need to insert the new output or we are done. */ if (!updated || !existing) { if (!existing) { if (new->primary) TAILQ_INSERT_HEAD(&outputs, new, outputs); else TAILQ_INSERT_TAIL(&outputs, new, outputs); } return; } new->changed = true; } /* * randr_query_outputs_14 uses RandR ≤ 1.4 to update outputs. * */ static void randr_query_outputs_14(void) { DLOG("Querying outputs using RandR ≤ 1.4\n"); /* Get screen resources (primary output, crtcs, outputs, modes) */ xcb_randr_get_screen_resources_current_cookie_t rcookie; rcookie = xcb_randr_get_screen_resources_current(conn, root); xcb_randr_get_output_primary_cookie_t pcookie; pcookie = xcb_randr_get_output_primary(conn, root); if ((primary = xcb_randr_get_output_primary_reply(conn, pcookie, NULL)) == NULL) ELOG("Could not get RandR primary output\n"); else DLOG("primary output is %08x\n", primary->output); xcb_randr_get_screen_resources_current_reply_t *res = xcb_randr_get_screen_resources_current_reply(conn, rcookie, NULL); if (res == NULL) { ELOG("Could not query screen resources.\n"); return; } /* timestamp of the configuration so that we get consistent replies to all * requests (if the configuration changes between our different calls) */ const xcb_timestamp_t cts = res->config_timestamp; const int len = xcb_randr_get_screen_resources_current_outputs_length(res); /* an output is VGA-1, LVDS-1, etc. (usually physical video outputs) */ xcb_randr_output_t *randr_outputs = xcb_randr_get_screen_resources_current_outputs(res); /* Request information for each output */ xcb_randr_get_output_info_cookie_t ocookie[len]; for (int i = 0; i < len; i++) ocookie[i] = xcb_randr_get_output_info(conn, randr_outputs[i], cts); /* Loop through all outputs available for this X11 screen */ for (int i = 0; i < len; i++) { xcb_randr_get_output_info_reply_t *output; if ((output = xcb_randr_get_output_info_reply(conn, ocookie[i], NULL)) == NULL) continue; handle_output(conn, randr_outputs[i], output, cts, res); free(output); } FREE(res); } /* * (Re-)queries the outputs via RandR and stores them in the list of outputs. * * If no outputs are found use the root window. * */ void randr_query_outputs(void) { Output *output, *other; if (!randr_query_outputs_15()) { randr_query_outputs_14(); } /* If there's no randr output, enable the output covering the root window. */ if (any_randr_output_active()) { DLOG("Active RandR output found. Disabling root output.\n"); if (root_output && root_output->active) { root_output->to_be_disabled = true; } } else { DLOG("No active RandR output found. Enabling root output.\n"); root_output->active = true; } /* Check for clones, disable the clones and reduce the mode to the * lowest common mode */ TAILQ_FOREACH(output, &outputs, outputs) { if (!output->active || output->to_be_disabled) continue; DLOG("output %p / %s, position (%d, %d), checking for clones\n", output, output_primary_name(output), output->rect.x, output->rect.y); for (other = output; other != TAILQ_END(&outputs); other = TAILQ_NEXT(other, outputs)) { if (other == output || !other->active || other->to_be_disabled) continue; if (other->rect.x != output->rect.x || other->rect.y != output->rect.y) continue; DLOG("output %p has the same position, his mode = %d x %d\n", other, other->rect.width, other->rect.height); uint32_t width = min(other->rect.width, output->rect.width); uint32_t height = min(other->rect.height, output->rect.height); if (update_if_necessary(&(output->rect.width), width) | update_if_necessary(&(output->rect.height), height)) output->changed = true; update_if_necessary(&(other->rect.width), width); update_if_necessary(&(other->rect.height), height); DLOG("disabling output %p (%s)\n", other, output_primary_name(other)); other->to_be_disabled = true; DLOG("new output mode %d x %d, other mode %d x %d\n", output->rect.width, output->rect.height, other->rect.width, other->rect.height); } } /* Ensure that all outputs which are active also have a con. This is * necessary because in the next step, a clone might get disabled. Example: * LVDS1 active, VGA1 gets activated as a clone of LVDS1 (has no con). * LVDS1 gets disabled. */ TAILQ_FOREACH(output, &outputs, outputs) { if (output->active && output->con == NULL) { DLOG("Need to initialize a Con for output %s\n", output_primary_name(output)); output_init_con(output); output->changed = false; } } /* Handle outputs which have a new mode or are disabled now (either * because the user disabled them or because they are clones) */ TAILQ_FOREACH(output, &outputs, outputs) { if (output->to_be_disabled) { randr_disable_output(output); } if (output->changed) { output_change_mode(conn, output); output->changed = false; } } /* Just go through each active output and assign one workspace */ TAILQ_FOREACH(output, &outputs, outputs) { if (!output->active) continue; Con *content = output_get_content(output->con); if (!TAILQ_EMPTY(&(content->nodes_head))) continue; DLOG("Should add ws for output %s\n", output_primary_name(output)); init_ws_for_output(output); } /* Focus the primary screen, if possible */ TAILQ_FOREACH(output, &outputs, outputs) { if (!output->primary || !output->con) continue; DLOG("Focusing primary output %s\n", output_primary_name(output)); Con *content = output_get_content(output->con); Con *ws = TAILQ_FIRST(&(content)->focus_head); workspace_show(ws); } /* render_layout flushes */ tree_render(); FREE(primary); } /* * Disables the output and moves its content. * */ void randr_disable_output(Output *output) { assert(output->to_be_disabled); output->active = false; DLOG("Output %s disabled, re-assigning workspaces/docks\n", output_primary_name(output)); Output *first = get_first_output(); /* TODO: refactor the following code into a nice function. maybe * use an on_destroy callback which is implement differently for * different container types (CT_CONTENT vs. CT_DOCKAREA)? */ Con *first_content = output_get_content(first->con); if (output->con != NULL) { /* We need to move the workspaces from the disappearing output to the first output */ /* 1: Get the con to focus next */ Con *next = focused; /* 2: iterate through workspaces and re-assign them, fixing the coordinates * of floating containers as we go */ Con *current; Con *old_content = output_get_content(output->con); while (!TAILQ_EMPTY(&(old_content->nodes_head))) { current = TAILQ_FIRST(&(old_content->nodes_head)); if (current != next && TAILQ_EMPTY(&(current->focus_head))) { /* the workspace is empty and not focused, get rid of it */ DLOG("Getting rid of current = %p / %s (empty, unfocused)\n", current, current->name); tree_close_internal(current, DONT_KILL_WINDOW, false); continue; } DLOG("Detaching current = %p / %s\n", current, current->name); con_detach(current); DLOG("Re-attaching current = %p / %s\n", current, current->name); con_attach(current, first_content, false); DLOG("Fixing the coordinates of floating containers\n"); Con *floating_con; TAILQ_FOREACH(floating_con, &(current->floating_head), floating_windows) { floating_fix_coordinates(floating_con, &(output->con->rect), &(first->con->rect)); } } /* Restore focus after con_detach / con_attach. next can be NULL, see #3523. */ if (next) { DLOG("now focusing next = %p\n", next); con_focus(next); workspace_show(con_get_workspace(next)); } /* 3: move the dock clients to the first output */ Con *child; TAILQ_FOREACH(child, &(output->con->nodes_head), nodes) { if (child->type != CT_DOCKAREA) continue; DLOG("Handling dock con %p\n", child); Con *dock; while (!TAILQ_EMPTY(&(child->nodes_head))) { dock = TAILQ_FIRST(&(child->nodes_head)); Con *nc; Match *match; nc = con_for_window(first->con, dock->window, &match); DLOG("Moving dock client %p to nc %p\n", dock, nc); con_detach(dock); DLOG("Re-attaching\n"); con_attach(dock, nc, false); DLOG("Done\n"); } } DLOG("destroying disappearing con %p\n", output->con); Con *con = output->con; /* clear the pointer before calling tree_close_internal in which the memory is freed */ output->con = NULL; tree_close_internal(con, DONT_KILL_WINDOW, true); DLOG("Done. Should be fine now\n"); } output->to_be_disabled = false; output->changed = false; } static void fallback_to_root_output(void) { root_output->active = true; output_init_con(root_output); init_ws_for_output(root_output); } /* * We have just established a connection to the X server and need the initial * XRandR information to setup workspaces for each screen. * */ void randr_init(int *event_base, const bool disable_randr15) { const xcb_query_extension_reply_t *extreply; root_output = create_root_output(conn); TAILQ_INSERT_TAIL(&outputs, root_output, outputs); extreply = xcb_get_extension_data(conn, &xcb_randr_id); if (!extreply->present) { DLOG("RandR is not present, activating root output.\n"); fallback_to_root_output(); return; } xcb_generic_error_t *err; xcb_randr_query_version_reply_t *randr_version = xcb_randr_query_version_reply( conn, xcb_randr_query_version(conn, XCB_RANDR_MAJOR_VERSION, XCB_RANDR_MINOR_VERSION), &err); if (err != NULL) { ELOG("Could not query RandR version: X11 error code %d\n", err->error_code); free(err); fallback_to_root_output(); return; } has_randr_1_5 = (randr_version->major_version >= 1) && (randr_version->minor_version >= 5) && !disable_randr15; free(randr_version); randr_query_outputs(); if (event_base != NULL) *event_base = extreply->first_event; xcb_randr_select_input(conn, root, XCB_RANDR_NOTIFY_MASK_SCREEN_CHANGE | XCB_RANDR_NOTIFY_MASK_OUTPUT_CHANGE | XCB_RANDR_NOTIFY_MASK_CRTC_CHANGE | XCB_RANDR_NOTIFY_MASK_OUTPUT_PROPERTY); xcb_flush(conn); }