i3
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00001 /* 00002 * vim:ts=4:sw=4:expandtab 00003 * 00004 * i3 - an improved dynamic tiling window manager 00005 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE) 00006 * 00007 * workspace.c: Modifying workspaces, accessing them, moving containers to 00008 * workspaces. 00009 * 00010 */ 00011 #include "all.h" 00012 00013 /* Stores a copy of the name of the last used workspace for the workspace 00014 * back-and-forth switching. */ 00015 static char *previous_workspace_name = NULL; 00016 00017 /* 00018 * Returns a pointer to the workspace with the given number (starting at 0), 00019 * creating the workspace if necessary (by allocating the necessary amount of 00020 * memory and initializing the data structures correctly). 00021 * 00022 */ 00023 Con *workspace_get(const char *num, bool *created) { 00024 Con *output, *workspace = NULL; 00025 00026 TAILQ_FOREACH(output, &(croot->nodes_head), nodes) 00027 GREP_FIRST(workspace, output_get_content(output), !strcasecmp(child->name, num)); 00028 00029 if (workspace == NULL) { 00030 LOG("Creating new workspace \"%s\"\n", num); 00031 /* unless an assignment is found, we will create this workspace on the current output */ 00032 output = con_get_output(focused); 00033 /* look for assignments */ 00034 struct Workspace_Assignment *assignment; 00035 TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) { 00036 if (strcmp(assignment->name, num) != 0) 00037 continue; 00038 00039 LOG("Found workspace assignment to output \"%s\"\n", assignment->output); 00040 GREP_FIRST(output, croot, !strcmp(child->name, assignment->output)); 00041 break; 00042 } 00043 Con *content = output_get_content(output); 00044 LOG("got output %p with content %p\n", output, content); 00045 /* We need to attach this container after setting its type. con_attach 00046 * will handle CT_WORKSPACEs differently */ 00047 workspace = con_new(NULL, NULL); 00048 char *name; 00049 sasprintf(&name, "[i3 con] workspace %s", num); 00050 x_set_name(workspace, name); 00051 free(name); 00052 workspace->type = CT_WORKSPACE; 00053 FREE(workspace->name); 00054 workspace->name = sstrdup(num); 00055 /* We set ->num to the number if this workspace’s name consists only of 00056 * a positive number. Otherwise it’s a named ws and num will be -1. */ 00057 char *endptr = NULL; 00058 long parsed_num = strtol(num, &endptr, 10); 00059 if (parsed_num == LONG_MIN || 00060 parsed_num == LONG_MAX || 00061 parsed_num < 0 || 00062 endptr == num) 00063 workspace->num = -1; 00064 else workspace->num = parsed_num; 00065 LOG("num = %d\n", workspace->num); 00066 00067 /* If default_orientation is set to NO_ORIENTATION we 00068 * determine workspace orientation from workspace size. 00069 * Otherwise we just set the orientation to default_orientation. */ 00070 if (config.default_orientation == NO_ORIENTATION) { 00071 workspace->orientation = (output->rect.height > output->rect.width) ? VERT : HORIZ; 00072 DLOG("Auto orientation. Output resolution set to (%d,%d), setting orientation to %d.\n", 00073 workspace->rect.width, workspace->rect.height, workspace->orientation); 00074 } else { 00075 workspace->orientation = config.default_orientation; 00076 } 00077 00078 con_attach(workspace, content, false); 00079 00080 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"init\"}"); 00081 if (created != NULL) 00082 *created = true; 00083 } 00084 else if (created != NULL) { 00085 *created = false; 00086 } 00087 00088 return workspace; 00089 } 00090 00091 /* 00092 * Returns true if the workspace is currently visible. Especially important for 00093 * multi-monitor environments, as they can have multiple currenlty active 00094 * workspaces. 00095 * 00096 */ 00097 bool workspace_is_visible(Con *ws) { 00098 Con *output = con_get_output(ws); 00099 if (output == NULL) 00100 return false; 00101 Con *fs = con_get_fullscreen_con(output, CF_OUTPUT); 00102 LOG("workspace visible? fs = %p, ws = %p\n", fs, ws); 00103 return (fs == ws); 00104 } 00105 00106 /* 00107 * XXX: we need to clean up all this recursive walking code. 00108 * 00109 */ 00110 Con *_get_sticky(Con *con, const char *sticky_group, Con *exclude) { 00111 Con *current; 00112 00113 TAILQ_FOREACH(current, &(con->nodes_head), nodes) { 00114 if (current != exclude && 00115 current->sticky_group != NULL && 00116 current->window != NULL && 00117 strcmp(current->sticky_group, sticky_group) == 0) 00118 return current; 00119 00120 Con *recurse = _get_sticky(current, sticky_group, exclude); 00121 if (recurse != NULL) 00122 return recurse; 00123 } 00124 00125 TAILQ_FOREACH(current, &(con->floating_head), floating_windows) { 00126 if (current != exclude && 00127 current->sticky_group != NULL && 00128 current->window != NULL && 00129 strcmp(current->sticky_group, sticky_group) == 0) 00130 return current; 00131 00132 Con *recurse = _get_sticky(current, sticky_group, exclude); 00133 if (recurse != NULL) 00134 return recurse; 00135 } 00136 00137 return NULL; 00138 } 00139 00140 /* 00141 * Reassigns all child windows in sticky containers. Called when the user 00142 * changes workspaces. 00143 * 00144 * XXX: what about sticky containers which contain containers? 00145 * 00146 */ 00147 static void workspace_reassign_sticky(Con *con) { 00148 Con *current; 00149 /* 1: go through all containers */ 00150 00151 /* handle all children and floating windows of this node */ 00152 TAILQ_FOREACH(current, &(con->nodes_head), nodes) { 00153 if (current->sticky_group == NULL) { 00154 workspace_reassign_sticky(current); 00155 continue; 00156 } 00157 00158 LOG("Ah, this one is sticky: %s / %p\n", current->name, current); 00159 /* 2: find a window which we can re-assign */ 00160 Con *output = con_get_output(current); 00161 Con *src = _get_sticky(output, current->sticky_group, current); 00162 00163 if (src == NULL) { 00164 LOG("No window found for this sticky group\n"); 00165 workspace_reassign_sticky(current); 00166 continue; 00167 } 00168 00169 x_move_win(src, current); 00170 current->window = src->window; 00171 current->mapped = true; 00172 src->window = NULL; 00173 src->mapped = false; 00174 00175 x_reparent_child(current, src); 00176 00177 LOG("re-assigned window from src %p to dest %p\n", src, current); 00178 } 00179 00180 TAILQ_FOREACH(current, &(con->floating_head), floating_windows) 00181 workspace_reassign_sticky(current); 00182 } 00183 00184 00185 static void _workspace_show(Con *workspace, bool changed_num_workspaces) { 00186 Con *current, *old = NULL; 00187 00188 /* disable fullscreen for the other workspaces and get the workspace we are 00189 * currently on. */ 00190 TAILQ_FOREACH(current, &(workspace->parent->nodes_head), nodes) { 00191 if (current->fullscreen_mode == CF_OUTPUT) 00192 old = current; 00193 current->fullscreen_mode = CF_NONE; 00194 } 00195 00196 /* enable fullscreen for the target workspace. If it happens to be the 00197 * same one we are currently on anyways, we can stop here. */ 00198 workspace->fullscreen_mode = CF_OUTPUT; 00199 current = con_get_workspace(focused); 00200 if (workspace == current) { 00201 DLOG("Not switching, already there.\n"); 00202 return; 00203 } 00204 00205 /* Remember currently focused workspace for switching back to it later with 00206 * the 'workspace back_and_forth' command. 00207 * NOTE: We have to duplicate the name as the original will be freed when 00208 * the corresponding workspace is cleaned up. */ 00209 00210 FREE(previous_workspace_name); 00211 if (current) 00212 previous_workspace_name = sstrdup(current->name); 00213 00214 workspace_reassign_sticky(workspace); 00215 00216 LOG("switching to %p\n", workspace); 00217 Con *next = con_descend_focused(workspace); 00218 00219 if (old && TAILQ_EMPTY(&(old->nodes_head)) && TAILQ_EMPTY(&(old->floating_head))) { 00220 /* check if this workspace is currently visible */ 00221 if (!workspace_is_visible(old)) { 00222 LOG("Closing old workspace (%p / %s), it is empty\n", old, old->name); 00223 tree_close(old, DONT_KILL_WINDOW, false, false); 00224 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}"); 00225 changed_num_workspaces = true; 00226 } 00227 } 00228 00229 /* Memorize current output */ 00230 Con *old_output = con_get_output(focused); 00231 00232 con_focus(next); 00233 workspace->fullscreen_mode = CF_OUTPUT; 00234 LOG("focused now = %p / %s\n", focused, focused->name); 00235 00236 /* Set mouse pointer */ 00237 Con *new_output = con_get_output(focused); 00238 if (old_output != new_output) { 00239 x_set_warp_to(&next->rect); 00240 } 00241 00242 /* Update the EWMH hints */ 00243 ewmh_update_current_desktop(); 00244 00245 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"focus\"}"); 00246 } 00247 00248 /* 00249 * Switches to the given workspace 00250 * 00251 */ 00252 void workspace_show(Con *workspace) { 00253 _workspace_show(workspace, false); 00254 } 00255 00256 /* 00257 * Looks up the workspace by name and switches to it. 00258 * 00259 */ 00260 void workspace_show_by_name(const char *num) { 00261 Con *workspace; 00262 bool changed_num_workspaces; 00263 workspace = workspace_get(num, &changed_num_workspaces); 00264 _workspace_show(workspace, changed_num_workspaces); 00265 } 00266 00267 /* 00268 * Focuses the next workspace. 00269 * 00270 */ 00271 Con* workspace_next() { 00272 Con *current = con_get_workspace(focused); 00273 Con *next = NULL; 00274 Con *output; 00275 00276 if (current->num == -1) { 00277 /* If currently a named workspace, find next named workspace. */ 00278 next = TAILQ_NEXT(current, nodes); 00279 } else { 00280 /* If currently a numbered workspace, find next numbered workspace. */ 00281 TAILQ_FOREACH(output, &(croot->nodes_head), nodes) 00282 NODES_FOREACH(output_get_content(output)) { 00283 if (child->type != CT_WORKSPACE) 00284 continue; 00285 if (child->num == -1) 00286 break; 00287 /* Need to check child against current and next because we are 00288 * traversing multiple lists and thus are not guaranteed the 00289 * relative order between the list of workspaces. */ 00290 if (current->num < child->num && (!next || child->num < next->num)) 00291 next = child; 00292 } 00293 } 00294 00295 /* Find next named workspace. */ 00296 if (!next) { 00297 bool found_current = false; 00298 TAILQ_FOREACH(output, &(croot->nodes_head), nodes) 00299 NODES_FOREACH(output_get_content(output)) { 00300 if (child->type != CT_WORKSPACE) 00301 continue; 00302 if (child == current) { 00303 found_current = 1; 00304 } else if (child->num == -1 && (current->num != -1 || found_current)) { 00305 next = child; 00306 goto workspace_next_end; 00307 } 00308 } 00309 } 00310 00311 /* Find first workspace. */ 00312 if (!next) { 00313 TAILQ_FOREACH(output, &(croot->nodes_head), nodes) 00314 NODES_FOREACH(output_get_content(output)) { 00315 if (child->type != CT_WORKSPACE) 00316 continue; 00317 if (!next || (child->num != -1 && child->num < next->num)) 00318 next = child; 00319 } 00320 } 00321 workspace_next_end: 00322 return next; 00323 } 00324 00325 /* 00326 * Focuses the previous workspace. 00327 * 00328 */ 00329 Con* workspace_prev() { 00330 Con *current = con_get_workspace(focused); 00331 Con *prev = NULL; 00332 Con *output; 00333 00334 if (current->num == -1) { 00335 /* If named workspace, find previous named workspace. */ 00336 prev = TAILQ_PREV(current, nodes_head, nodes); 00337 if (prev && prev->num != -1) 00338 prev = NULL; 00339 } else { 00340 /* If numbered workspace, find previous numbered workspace. */ 00341 TAILQ_FOREACH_REVERSE(output, &(croot->nodes_head), nodes_head, nodes) 00342 NODES_FOREACH_REVERSE(output_get_content(output)) { 00343 if (child->type != CT_WORKSPACE || child->num == -1) 00344 continue; 00345 /* Need to check child against current and previous because we 00346 * are traversing multiple lists and thus are not guaranteed 00347 * the relative order between the list of workspaces. */ 00348 if (current->num > child->num && (!prev || child->num > prev->num)) 00349 prev = child; 00350 } 00351 } 00352 00353 /* Find previous named workspace. */ 00354 if (!prev) { 00355 bool found_current = false; 00356 TAILQ_FOREACH_REVERSE(output, &(croot->nodes_head), nodes_head, nodes) 00357 NODES_FOREACH_REVERSE(output_get_content(output)) { 00358 if (child->type != CT_WORKSPACE) 00359 continue; 00360 if (child == current) { 00361 found_current = true; 00362 } else if (child->num == -1 && (current->num != -1 || found_current)) { 00363 prev = child; 00364 goto workspace_prev_end; 00365 } 00366 } 00367 } 00368 00369 /* Find last workspace. */ 00370 if (!prev) { 00371 TAILQ_FOREACH_REVERSE(output, &(croot->nodes_head), nodes_head, nodes) 00372 NODES_FOREACH_REVERSE(output_get_content(output)) { 00373 if (child->type != CT_WORKSPACE) 00374 continue; 00375 if (!prev || child->num > prev->num) 00376 prev = child; 00377 } 00378 } 00379 00380 workspace_prev_end: 00381 return prev; 00382 } 00383 00384 /* 00385 * Focuses the previously focused workspace. 00386 * 00387 */ 00388 void workspace_back_and_forth() { 00389 if (!previous_workspace_name) { 00390 DLOG("No previous workspace name set. Not switching."); 00391 return; 00392 } 00393 00394 workspace_show_by_name(previous_workspace_name); 00395 } 00396 00397 static bool get_urgency_flag(Con *con) { 00398 Con *child; 00399 TAILQ_FOREACH(child, &(con->nodes_head), nodes) 00400 if (child->urgent || get_urgency_flag(child)) 00401 return true; 00402 00403 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) 00404 if (child->urgent || get_urgency_flag(child)) 00405 return true; 00406 00407 return false; 00408 } 00409 00410 /* 00411 * Goes through all clients on the given workspace and updates the workspace’s 00412 * urgent flag accordingly. 00413 * 00414 */ 00415 void workspace_update_urgent_flag(Con *ws) { 00416 bool old_flag = ws->urgent; 00417 ws->urgent = get_urgency_flag(ws); 00418 DLOG("Workspace urgency flag changed from %d to %d\n", old_flag, ws->urgent); 00419 00420 if (old_flag != ws->urgent) 00421 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"urgent\"}"); 00422 } 00423 00424 /* 00425 * 'Forces' workspace orientation by moving all cons into a new split-con with 00426 * the same orientation as the workspace and then changing the workspace 00427 * orientation. 00428 * 00429 */ 00430 void ws_force_orientation(Con *ws, orientation_t orientation) { 00431 /* 1: create a new split container */ 00432 Con *split = con_new(NULL, NULL); 00433 split->parent = ws; 00434 00435 /* 2: copy layout and orientation from workspace */ 00436 split->layout = ws->layout; 00437 split->orientation = ws->orientation; 00438 00439 Con *old_focused = TAILQ_FIRST(&(ws->focus_head)); 00440 00441 /* 3: move the existing cons of this workspace below the new con */ 00442 DLOG("Moving cons\n"); 00443 while (!TAILQ_EMPTY(&(ws->nodes_head))) { 00444 Con *child = TAILQ_FIRST(&(ws->nodes_head)); 00445 con_detach(child); 00446 con_attach(child, split, true); 00447 } 00448 00449 /* 4: switch workspace orientation */ 00450 ws->orientation = orientation; 00451 00452 /* 5: attach the new split container to the workspace */ 00453 DLOG("Attaching new split to ws\n"); 00454 con_attach(split, ws, false); 00455 00456 /* 6: fix the percentages */ 00457 con_fix_percent(ws); 00458 00459 if (old_focused) 00460 con_focus(old_focused); 00461 } 00462 00463 /* 00464 * Called when a new con (with a window, not an empty or split con) should be 00465 * attached to the workspace (for example when managing a new window or when 00466 * moving an existing window to the workspace level). 00467 * 00468 * Depending on the workspace_layout setting, this function either returns the 00469 * workspace itself (default layout) or creates a new stacked/tabbed con and 00470 * returns that. 00471 * 00472 */ 00473 Con *workspace_attach_to(Con *ws) { 00474 DLOG("Attaching a window to workspace %p / %s\n", ws, ws->name); 00475 00476 if (config.default_layout == L_DEFAULT) { 00477 DLOG("Default layout, just attaching it to the workspace itself.\n"); 00478 return ws; 00479 } 00480 00481 DLOG("Non-default layout, creating a new split container\n"); 00482 /* 1: create a new split container */ 00483 Con *new = con_new(NULL, NULL); 00484 new->parent = ws; 00485 00486 /* 2: set the requested layout on the split con */ 00487 new->layout = config.default_layout; 00488 00489 /* 3: While the layout is irrelevant in stacked/tabbed mode, it needs 00490 * to be set. Otherwise, this con will not be interpreted as a split 00491 * container. */ 00492 if (config.default_orientation == NO_ORIENTATION) { 00493 new->orientation = (ws->rect.height > ws->rect.width) ? VERT : HORIZ; 00494 } else { 00495 new->orientation = config.default_orientation; 00496 } 00497 00498 /* 4: attach the new split container to the workspace */ 00499 DLOG("Attaching new split %p to workspace %p\n", new, ws); 00500 con_attach(new, ws, false); 00501 00502 return new; 00503 }