4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * workspace.c: Functions for modifying workspaces
27 #include "workspace.h"
33 * Returns a pointer to the workspace with the given number (starting at 0),
34 * creating the workspace if necessary (by allocating the necessary amount of
35 * memory and initializing the data structures correctly).
38 Workspace *workspace_get(int number) {
40 TAILQ_FOREACH(ws, workspaces, workspaces)
41 if (ws->num == number)
44 /* If we are still there, we could not find the requested workspace. */
45 int last_ws = TAILQ_LAST(workspaces, workspaces_head)->num;
47 DLOG("We need to initialize that one, last ws = %d\n", last_ws);
49 for (int c = last_ws; c < number; c++) {
50 DLOG("Creating new ws\n");
52 ws = scalloc(sizeof(Workspace));
54 TAILQ_INIT(&(ws->floating_clients));
55 expand_table_cols(ws);
56 expand_table_rows(ws);
57 workspace_set_name(ws, NULL);
59 TAILQ_INSERT_TAIL(workspaces, ws, workspaces);
63 ewmh_update_workarea();
69 * Sets the name (or just its number) for the given workspace. This has to
70 * be called for every workspace as the rendering function
71 * (render_internal_bar) relies on workspace->name and workspace->name_len
75 void workspace_set_name(Workspace *ws, const char *name) {
80 ret = asprintf(&label, "%d: %s", ws->num + 1, name);
81 else ret = asprintf(&label, "%d", ws->num + 1);
84 errx(1, "asprintf() failed");
88 ws->name = convert_utf8_to_ucs2(label, &(ws->name_len));
89 if (config.font != NULL)
90 ws->text_width = predict_text_width(global_conn, config.font, ws->name, ws->name_len);
91 else ws->text_width = 0;
97 * Returns true if the workspace is currently visible. Especially important for
98 * multi-monitor environments, as they can have multiple currenlty active
102 bool workspace_is_visible(Workspace *ws) {
103 return (ws->screen->current_workspace == ws);
107 * Switches to the given workspace
110 void workspace_show(xcb_connection_t *conn, int workspace) {
111 bool need_warp = false;
112 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
113 /* t_ws (to workspace) is just a convenience pointer to the workspace we’re switching to */
114 Workspace *t_ws = workspace_get(workspace-1);
116 DLOG("show_workspace(%d)\n", workspace);
118 /* Store current_row/current_col */
119 c_ws->current_row = current_row;
120 c_ws->current_col = current_col;
122 /* Check if the workspace has not been used yet */
123 workspace_initialize(t_ws, c_ws->screen, false);
125 if (c_ws->screen != t_ws->screen) {
126 /* We need to switch to the other screen first */
127 DLOG("moving over to other screen.\n");
129 /* Store the old client */
130 Client *old_client = CUR_CELL->currently_focused;
132 c_ws = t_ws->screen->current_workspace;
133 current_col = c_ws->current_col;
134 current_row = c_ws->current_row;
135 if (CUR_CELL->currently_focused != NULL)
138 Rect *dims = &(c_ws->screen->rect);
139 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0,
140 dims->x + (dims->width / 2), dims->y + (dims->height / 2));
143 /* Re-decorate the old client, it’s not focused anymore */
144 if ((old_client != NULL) && !old_client->dock)
145 redecorate_window(conn, old_client);
146 else xcb_flush(conn);
149 /* Check if we need to change something or if we’re already there */
150 if (c_ws->screen->current_workspace->num == (workspace-1)) {
151 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
152 if (last_focused != SLIST_END(&(c_ws->focus_stack)))
153 set_focus(conn, last_focused, true);
155 client_warp_pointer_into(conn, last_focused);
162 Workspace *old_workspace = c_ws;
163 c_ws = t_ws->screen->current_workspace = workspace_get(workspace-1);
165 /* Unmap all clients of the old workspace */
166 workspace_unmap_clients(conn, old_workspace);
168 current_row = c_ws->current_row;
169 current_col = c_ws->current_col;
170 DLOG("new current row = %d, current col = %d\n", current_row, current_col);
172 workspace_map_clients(conn, c_ws);
174 /* POTENTIAL TO IMPROVE HERE: due to the call to _map_clients first and
175 * render_layout afterwards, there is a short flickering on the source
176 * workspace (assign ws 3 to screen 0, ws 4 to screen 1, create single
177 * client on ws 4, move it to ws 3, switch to ws 3, you’ll see the
180 /* Restore focus on the new workspace */
181 Client *last_focused = SLIST_FIRST(&(c_ws->focus_stack));
182 if (last_focused != SLIST_END(&(c_ws->focus_stack)))
183 set_focus(conn, last_focused, true);
184 else xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
188 /* We can warp the pointer only after the window has been
189 * reconfigured in render_layout, otherwise the pointer will
190 * be warped to the old position, which will not work when we
191 * moved it to another screen. */
192 if (last_focused != SLIST_END(&(c_ws->focus_stack)) && need_warp) {
193 client_warp_pointer_into(conn, last_focused);
200 * Parses the preferred_screen property of a workspace. You can either specify
201 * the screen number (it is not given that the screen numbering always stays
202 * the same) or the screen coordinates (exact coordinates, e.g. 1280 will match
203 * the screen starting at x=1280, but 1281 will not). For coordinates, you can
204 * either specify an x coordinate ("1280") or an y coordinate ("x800") or both
208 static i3Screen *get_screen_from_preference(struct screens_head *slist, char *preference) {
211 int preferred_screen = strtol(preference, &rest, 10);
213 DLOG("Getting screen for preference \"%s\" (%d)\n", preference, preferred_screen);
215 if ((rest == preference) || (preferred_screen >= num_screens)) {
216 int x = INT_MAX, y = INT_MAX;
217 if (strchr(preference, 'x') != NULL) {
218 /* Check if only the y coordinate was specified */
219 if (*preference == 'x')
220 y = atoi(preference+1);
222 x = atoi(preference);
223 y = atoi(strchr(preference, 'x') + 1);
226 x = atoi(preference);
229 DLOG("Looking for screen at %d x %d\n", x, y);
231 TAILQ_FOREACH(screen, slist, screens)
232 if ((x == INT_MAX || screen->rect.x == x) &&
233 (y == INT_MAX || screen->rect.y == y)) {
234 DLOG("found %p\n", screen);
238 DLOG("none found\n");
242 TAILQ_FOREACH(screen, slist, screens)
243 if (c++ == preferred_screen)
251 * Assigns the given workspace to the given screen by correctly updating its
252 * state and reconfiguring all the clients on this workspace.
254 * This is called when initializing a screen and when re-assigning it to a
255 * different screen which just got available (if you configured it to be on
256 * screen 1 and you just plugged in screen 1).
259 void workspace_assign_to(Workspace *ws, i3Screen *screen) {
265 /* Copy the dimensions from the virtual screen */
266 memcpy(&(ws->rect), &(ws->screen->rect), sizeof(Rect));
268 ewmh_update_workarea();
270 /* Force reconfiguration for each client on that workspace */
272 CIRCLEQ_FOREACH(client, &(ws->table[cols][rows]->clients), clients) {
273 client->force_reconfigure = true;
280 /* Render the workspace to reconfigure the clients. However, they will be visible now, so… */
281 render_workspace(global_conn, screen, ws);
283 /* …unless we want to see them at the moment, we should hide that workspace */
284 if (workspace_is_visible(ws))
287 workspace_unmap_clients(global_conn, ws);
290 DLOG("Need to adjust c_ws...\n");
291 c_ws = screen->current_workspace;
296 * Initializes the given workspace if it is not already initialized. The given
297 * screen is to be understood as a fallback, if the workspace itself either
298 * was not assigned to a particular screen or cannot be placed there because
299 * the screen is not attached at the moment.
302 void workspace_initialize(Workspace *ws, i3Screen *screen, bool recheck) {
303 i3Screen *old_screen;
305 if (ws->screen != NULL && !recheck) {
306 DLOG("Workspace already initialized\n");
310 old_screen = ws->screen;
312 /* If this workspace has no preferred screen or if the screen it wants
313 * to be on is not available at the moment, we initialize it with
314 * the screen which was given */
315 if (ws->preferred_screen == NULL ||
316 (ws->screen = get_screen_from_preference(virtual_screens, ws->preferred_screen)) == NULL)
319 DLOG("old_screen = %p, ws->screen = %p\n", old_screen, ws->screen);
320 /* If the assignment did not change, we do not need to update anything */
321 if (old_screen != NULL && ws->screen == old_screen)
324 workspace_assign_to(ws, ws->screen);
328 * Gets the first unused workspace for the given screen, taking into account
329 * the preferred_screen setting of every workspace (workspace assignments).
332 Workspace *get_first_workspace_for_screen(struct screens_head *slist, i3Screen *screen) {
333 Workspace *result = NULL;
336 TAILQ_FOREACH(ws, workspaces, workspaces) {
337 if (ws->preferred_screen == NULL ||
338 !screens_are_equal(get_screen_from_preference(slist, ws->preferred_screen), screen))
345 if (result == NULL) {
346 /* No assignment found, returning first unused workspace */
348 TAILQ_FOREACH(ws, workspaces, workspaces) {
349 if (ws->screen != NULL)
357 if (result == NULL) {
358 DLOG("No existing free workspace found to assign, creating a new one\n");
362 TAILQ_FOREACH(ws, workspaces, workspaces)
364 result = workspace_get(last_ws + 1);
367 workspace_initialize(result, screen, false);
372 * Maps all clients (and stack windows) of the given workspace.
375 void workspace_map_clients(xcb_connection_t *conn, Workspace *ws) {
378 ignore_enter_notify_forall(conn, ws, true);
380 /* Map all clients on the new workspace */
382 CIRCLEQ_FOREACH(client, &(ws->table[cols][rows]->clients), clients)
383 client_map(conn, client);
385 /* Map all floating clients */
386 if (!ws->floating_hidden)
387 TAILQ_FOREACH(client, &(ws->floating_clients), floating_clients)
388 client_map(conn, client);
390 /* Map all stack windows, if any */
391 struct Stack_Window *stack_win;
392 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
393 if (stack_win->container->workspace == ws)
394 xcb_map_window(conn, stack_win->window);
396 ignore_enter_notify_forall(conn, ws, false);
400 * Unmaps all clients (and stack windows) of the given workspace.
402 * This needs to be called separately when temporarily rendering
403 * a workspace which is not the active workspace to force
404 * reconfiguration of all clients, like in src/xinerama.c when
405 * re-assigning a workspace to another screen.
408 void workspace_unmap_clients(xcb_connection_t *conn, Workspace *u_ws) {
410 struct Stack_Window *stack_win;
412 /* Ignore notify events because they would cause focus to be changed */
413 ignore_enter_notify_forall(conn, u_ws, true);
415 /* Unmap all clients of the given workspace */
416 int unmapped_clients = 0;
418 CIRCLEQ_FOREACH(client, &(u_ws->table[cols][rows]->clients), clients) {
419 DLOG("unmapping normal client %p / %p / %p\n", client, client->frame, client->child);
420 client_unmap(conn, client);
424 /* To find floating clients, we traverse the focus stack */
425 SLIST_FOREACH(client, &(u_ws->focus_stack), focus_clients) {
426 if (!client_is_floating(client))
429 DLOG("unmapping floating client %p / %p / %p\n", client, client->frame, client->child);
431 client_unmap(conn, client);
435 /* If we did not unmap any clients, the workspace is empty and we can destroy it, at least
436 * if it is not the current workspace. */
437 if (unmapped_clients == 0 && u_ws != c_ws) {
438 /* Re-assign the workspace of all dock clients which use this workspace */
440 DLOG("workspace %p is empty\n", u_ws);
441 SLIST_FOREACH(dock, &(u_ws->screen->dock_clients), dock_clients) {
442 if (dock->workspace != u_ws)
445 DLOG("Re-assigning dock client to c_ws (%p)\n", c_ws);
446 dock->workspace = c_ws;
451 /* Unmap the stack windows on the given workspace, if any */
452 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
453 if (stack_win->container->workspace == u_ws)
454 xcb_unmap_window(conn, stack_win->window);
456 ignore_enter_notify_forall(conn, u_ws, false);
460 * Goes through all clients on the given workspace and updates the workspace’s
461 * urgent flag accordingly.
464 void workspace_update_urgent_flag(Workspace *ws) {
467 SLIST_FOREACH(current, &(ws->focus_stack), focus_clients) {
468 if (!current->urgent)
479 * Returns the width of the workspace.
482 int workspace_width(Workspace *ws) {
483 return ws->rect.width;
487 * Returns the effective height of the workspace (without the internal bar and
488 * without dock clients).
491 int workspace_height(Workspace *ws) {
492 int height = ws->rect.height;
493 i3Font *font = load_font(global_conn, config.font);
495 /* Reserve space for dock clients */
497 SLIST_FOREACH(client, &(ws->screen->dock_clients), dock_clients)
498 height -= client->desired_height;
500 /* Space for the internal bar */
501 height -= (font->height + 6);