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00001 /* 00002 * vim:ts=4:sw=4:expandtab 00003 * 00004 * i3 - an improved dynamic tiling window manager 00005 * © 2009-2010 Michael Stapelberg and contributors (see also: LICENSE) 00006 * 00007 * workspace.c: Functions for modifying workspaces 00008 * 00009 */ 00010 #include <limits.h> 00011 00012 #include "all.h" 00013 00014 /* 00015 * Returns a pointer to the workspace with the given number (starting at 0), 00016 * creating the workspace if necessary (by allocating the necessary amount of 00017 * memory and initializing the data structures correctly). 00018 * 00019 */ 00020 Con *workspace_get(const char *num, bool *created) { 00021 Con *output, *workspace = NULL; 00022 00023 TAILQ_FOREACH(output, &(croot->nodes_head), nodes) 00024 GREP_FIRST(workspace, output_get_content(output), !strcasecmp(child->name, num)); 00025 00026 if (workspace == NULL) { 00027 LOG("Creating new workspace \"%s\"\n", num); 00028 /* unless an assignment is found, we will create this workspace on the current output */ 00029 output = con_get_output(focused); 00030 /* look for assignments */ 00031 struct Workspace_Assignment *assignment; 00032 TAILQ_FOREACH(assignment, &ws_assignments, ws_assignments) { 00033 if (strcmp(assignment->name, num) != 0) 00034 continue; 00035 00036 LOG("Found workspace assignment to output \"%s\"\n", assignment->output); 00037 GREP_FIRST(output, croot, !strcmp(child->name, assignment->output)); 00038 break; 00039 } 00040 Con *content = output_get_content(output); 00041 LOG("got output %p with content %p\n", output, content); 00042 /* We need to attach this container after setting its type. con_attach 00043 * will handle CT_WORKSPACEs differently */ 00044 workspace = con_new(NULL, NULL); 00045 char *name; 00046 asprintf(&name, "[i3 con] workspace %s", num); 00047 x_set_name(workspace, name); 00048 free(name); 00049 workspace->type = CT_WORKSPACE; 00050 FREE(workspace->name); 00051 workspace->name = sstrdup(num); 00052 /* We set ->num to the number if this workspace’s name consists only of 00053 * a positive number. Otherwise it’s a named ws and num will be -1. */ 00054 char *end; 00055 long parsed_num = strtol(num, &end, 10); 00056 if (parsed_num == LONG_MIN || 00057 parsed_num == LONG_MAX || 00058 parsed_num < 0 || 00059 (end && *end != '\0')) 00060 workspace->num = -1; 00061 else workspace->num = parsed_num; 00062 LOG("num = %d\n", workspace->num); 00063 00064 /* If default_orientation is set to NO_ORIENTATION we 00065 * determine workspace orientation from workspace size. 00066 * Otherwise we just set the orientation to default_orientation. */ 00067 if (config.default_orientation == NO_ORIENTATION) { 00068 workspace->orientation = (output->rect.height > output->rect.width) ? VERT : HORIZ; 00069 DLOG("Auto orientation. Output resolution set to (%d,%d), setting orientation to %d.\n", 00070 workspace->rect.width, workspace->rect.height, workspace->orientation); 00071 } else { 00072 workspace->orientation = config.default_orientation; 00073 } 00074 00075 con_attach(workspace, content, false); 00076 00077 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"init\"}"); 00078 if (created != NULL) 00079 *created = true; 00080 } 00081 else if (created != NULL) { 00082 *created = false; 00083 } 00084 00085 return workspace; 00086 } 00087 00088 /* 00089 * Returns true if the workspace is currently visible. Especially important for 00090 * multi-monitor environments, as they can have multiple currenlty active 00091 * workspaces. 00092 * 00093 */ 00094 bool workspace_is_visible(Con *ws) { 00095 Con *output = con_get_output(ws); 00096 if (output == NULL) 00097 return false; 00098 Con *fs = con_get_fullscreen_con(output, CF_OUTPUT); 00099 LOG("workspace visible? fs = %p, ws = %p\n", fs, ws); 00100 return (fs == ws); 00101 } 00102 00103 /* 00104 * XXX: we need to clean up all this recursive walking code. 00105 * 00106 */ 00107 Con *_get_sticky(Con *con, const char *sticky_group, Con *exclude) { 00108 Con *current; 00109 00110 TAILQ_FOREACH(current, &(con->nodes_head), nodes) { 00111 if (current != exclude && 00112 current->sticky_group != NULL && 00113 current->window != NULL && 00114 strcmp(current->sticky_group, sticky_group) == 0) 00115 return current; 00116 00117 Con *recurse = _get_sticky(current, sticky_group, exclude); 00118 if (recurse != NULL) 00119 return recurse; 00120 } 00121 00122 TAILQ_FOREACH(current, &(con->floating_head), floating_windows) { 00123 if (current != exclude && 00124 current->sticky_group != NULL && 00125 current->window != NULL && 00126 strcmp(current->sticky_group, sticky_group) == 0) 00127 return current; 00128 00129 Con *recurse = _get_sticky(current, sticky_group, exclude); 00130 if (recurse != NULL) 00131 return recurse; 00132 } 00133 00134 return NULL; 00135 } 00136 00137 /* 00138 * Reassigns all child windows in sticky containers. Called when the user 00139 * changes workspaces. 00140 * 00141 * XXX: what about sticky containers which contain containers? 00142 * 00143 */ 00144 static void workspace_reassign_sticky(Con *con) { 00145 Con *current; 00146 /* 1: go through all containers */ 00147 00148 /* handle all children and floating windows of this node */ 00149 TAILQ_FOREACH(current, &(con->nodes_head), nodes) { 00150 if (current->sticky_group == NULL) { 00151 workspace_reassign_sticky(current); 00152 continue; 00153 } 00154 00155 LOG("Ah, this one is sticky: %s / %p\n", current->name, current); 00156 /* 2: find a window which we can re-assign */ 00157 Con *output = con_get_output(current); 00158 Con *src = _get_sticky(output, current->sticky_group, current); 00159 00160 if (src == NULL) { 00161 LOG("No window found for this sticky group\n"); 00162 workspace_reassign_sticky(current); 00163 continue; 00164 } 00165 00166 x_move_win(src, current); 00167 current->window = src->window; 00168 current->mapped = true; 00169 src->window = NULL; 00170 src->mapped = false; 00171 00172 x_reparent_child(current, src); 00173 00174 LOG("re-assigned window from src %p to dest %p\n", src, current); 00175 } 00176 00177 TAILQ_FOREACH(current, &(con->floating_head), floating_windows) 00178 workspace_reassign_sticky(current); 00179 } 00180 00181 /* 00182 * Switches to the given workspace 00183 * 00184 */ 00185 void workspace_show(const char *num) { 00186 Con *workspace, *current, *old = NULL; 00187 00188 bool changed_num_workspaces; 00189 workspace = workspace_get(num, &changed_num_workspaces); 00190 00191 /* disable fullscreen for the other workspaces and get the workspace we are 00192 * currently on. */ 00193 TAILQ_FOREACH(current, &(workspace->parent->nodes_head), nodes) { 00194 if (current->fullscreen_mode == CF_OUTPUT) 00195 old = current; 00196 current->fullscreen_mode = CF_NONE; 00197 } 00198 00199 /* enable fullscreen for the target workspace. If it happens to be the 00200 * same one we are currently on anyways, we can stop here. */ 00201 workspace->fullscreen_mode = CF_OUTPUT; 00202 if (workspace == con_get_workspace(focused)) { 00203 DLOG("Not switching, already there.\n"); 00204 return; 00205 } 00206 00207 workspace_reassign_sticky(workspace); 00208 00209 LOG("switching to %p\n", workspace); 00210 Con *next = con_descend_focused(workspace); 00211 00212 if (old && TAILQ_EMPTY(&(old->nodes_head)) && TAILQ_EMPTY(&(old->floating_head))) { 00213 /* check if this workspace is currently visible */ 00214 if (!workspace_is_visible(old)) { 00215 LOG("Closing old workspace (%p / %s), it is empty\n", old, old->name); 00216 tree_close(old, DONT_KILL_WINDOW, false); 00217 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"empty\"}"); 00218 changed_num_workspaces = true; 00219 } 00220 } 00221 00222 con_focus(next); 00223 workspace->fullscreen_mode = CF_OUTPUT; 00224 LOG("focused now = %p / %s\n", focused, focused->name); 00225 00226 /* Update the EWMH hints */ 00227 if (changed_num_workspaces) 00228 ewmh_update_workarea(); 00229 ewmh_update_current_desktop(); 00230 00231 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"focus\"}"); 00232 } 00233 00234 /* 00235 * Focuses the next workspace. 00236 * 00237 */ 00238 void workspace_next() { 00239 Con *ws = con_get_workspace(focused); 00240 Con *next = TAILQ_NEXT(ws, nodes); 00241 if (!next) 00242 next = TAILQ_FIRST(&(ws->parent->nodes_head)); 00243 00244 workspace_show(next->name); 00245 } 00246 00247 /* 00248 * Focuses the previous workspace. 00249 * 00250 */ 00251 void workspace_prev() { 00252 Con *ws = con_get_workspace(focused); 00253 Con *prev = TAILQ_PREV(ws, nodes_head, nodes); 00254 if (!prev) 00255 prev = TAILQ_LAST(&(ws->parent->nodes_head), nodes_head); 00256 00257 workspace_show(prev->name); 00258 } 00259 00260 static bool get_urgency_flag(Con *con) { 00261 Con *child; 00262 TAILQ_FOREACH(child, &(con->nodes_head), nodes) 00263 if (child->urgent || get_urgency_flag(child)) 00264 return true; 00265 00266 TAILQ_FOREACH(child, &(con->floating_head), floating_windows) 00267 if (child->urgent || get_urgency_flag(child)) 00268 return true; 00269 00270 return false; 00271 } 00272 00273 /* 00274 * Goes through all clients on the given workspace and updates the workspace’s 00275 * urgent flag accordingly. 00276 * 00277 */ 00278 void workspace_update_urgent_flag(Con *ws) { 00279 bool old_flag = ws->urgent; 00280 ws->urgent = get_urgency_flag(ws); 00281 DLOG("Workspace urgency flag changed from %d to %d\n", old_flag, ws->urgent); 00282 00283 if (old_flag != ws->urgent) 00284 ipc_send_event("workspace", I3_IPC_EVENT_WORKSPACE, "{\"change\":\"urgent\"}"); 00285 } 00286 00287 /* 00288 * 'Forces' workspace orientation by moving all cons into a new split-con with 00289 * the same orientation as the workspace and then changing the workspace 00290 * orientation. 00291 * 00292 */ 00293 void ws_force_orientation(Con *ws, orientation_t orientation) { 00294 /* 1: create a new split container */ 00295 Con *split = con_new(NULL, NULL); 00296 split->parent = ws; 00297 00298 /* 2: copy layout and orientation from workspace */ 00299 split->layout = ws->layout; 00300 split->orientation = ws->orientation; 00301 00302 Con *old_focused = TAILQ_FIRST(&(ws->focus_head)); 00303 00304 /* 3: move the existing cons of this workspace below the new con */ 00305 DLOG("Moving cons\n"); 00306 while (!TAILQ_EMPTY(&(ws->nodes_head))) { 00307 Con *child = TAILQ_FIRST(&(ws->nodes_head)); 00308 con_detach(child); 00309 con_attach(child, split, true); 00310 } 00311 00312 /* 4: switch workspace orientation */ 00313 ws->orientation = orientation; 00314 00315 /* 5: attach the new split container to the workspace */ 00316 DLOG("Attaching new split to ws\n"); 00317 con_attach(split, ws, false); 00318 00319 /* 6: fix the percentages */ 00320 con_fix_percent(ws); 00321 00322 if (old_focused) 00323 con_focus(old_focused); 00324 } 00325 00326 /* 00327 * Called when a new con (with a window, not an empty or split con) should be 00328 * attached to the workspace (for example when managing a new window or when 00329 * moving an existing window to the workspace level). 00330 * 00331 * Depending on the workspace_layout setting, this function either returns the 00332 * workspace itself (default layout) or creates a new stacked/tabbed con and 00333 * returns that. 00334 * 00335 */ 00336 Con *workspace_attach_to(Con *ws) { 00337 DLOG("Attaching a window to workspace %p / %s\n", ws, ws->name); 00338 00339 if (config.default_layout == L_DEFAULT) { 00340 DLOG("Default layout, just attaching it to the workspace itself.\n"); 00341 return ws; 00342 } 00343 00344 DLOG("Non-default layout, creating a new split container\n"); 00345 /* 1: create a new split container */ 00346 Con *new = con_new(NULL, NULL); 00347 new->parent = ws; 00348 00349 /* 2: set the requested layout on the split con */ 00350 new->layout = config.default_layout; 00351 00352 /* 3: While the layout is irrelevant in stacked/tabbed mode, it needs 00353 * to be set. Otherwise, this con will not be interpreted as a split 00354 * container. */ 00355 if (config.default_orientation == NO_ORIENTATION) { 00356 new->orientation = (ws->rect.height > ws->rect.width) ? VERT : HORIZ; 00357 } else { 00358 new->orientation = config.default_orientation; 00359 } 00360 00361 /* 4: attach the new split container to the workspace */ 00362 DLOG("Attaching new split %p to workspace %p\n", new, ws); 00363 con_attach(new, ws, false); 00364 00365 return new; 00366 }