4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
27 static bool focus_window_in_container(xcb_connection_t *conn, Container *container,
28 direction_t direction) {
29 /* If this container is empty, we’re done */
30 if (container->currently_focused == NULL)
33 /* Get the previous/next client or wrap around */
34 Client *candidate = NULL;
35 if (direction == D_UP) {
36 if ((candidate = CIRCLEQ_PREV_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
37 candidate = CIRCLEQ_LAST(&(container->clients));
39 else if (direction == D_DOWN) {
40 if ((candidate = CIRCLEQ_NEXT_OR_NULL(&(container->clients), container->currently_focused, clients)) == NULL)
41 candidate = CIRCLEQ_FIRST(&(container->clients));
42 } else LOG("Direction not implemented!\n");
44 /* If we could not switch, the container contains exactly one client. We return false */
45 if (candidate == container->currently_focused)
49 set_focus(conn, candidate);
54 typedef enum { THING_WINDOW, THING_CONTAINER } thing_t;
56 static void focus_thing(xcb_connection_t *conn, direction_t direction, thing_t thing) {
57 LOG("focusing direction %d\n", direction);
59 int new_row = current_row,
60 new_col = current_col;
62 Container *container = CUR_CELL;
63 Workspace *t_ws = c_ws;
65 /* There always is a container. If not, current_col or current_row is wrong */
66 assert(container != NULL);
68 if (container->workspace->fullscreen_client != NULL) {
69 LOG("You're in fullscreen mode. Won't switch focus\n");
73 /* TODO: for horizontal default layout, this has to be expanded to LEFT/RIGHT */
74 if (direction == D_UP || direction == D_DOWN) {
75 if (thing == THING_WINDOW)
76 /* Let’s see if we can perform up/down focus in the current container */
77 if (focus_window_in_container(conn, container, direction))
80 if (direction == D_DOWN && cell_exists(current_col, current_row+1))
82 else if (direction == D_UP && cell_exists(current_col, current_row-1))
85 /* Let’s see if there is a screen down/up there to which we can switch */
86 LOG("container is at %d with height %d\n", container->y, container->height);
88 int destination_y = (direction == D_UP ? (container->y - 1) : (container->y + container->height + 1));
89 if ((screen = get_screen_containing(container->x, destination_y)) == NULL) {
90 LOG("Wrapping screen around vertically\n");
91 /* No screen found? Then wrap */
92 screen = get_screen_most((direction == D_UP ? D_DOWN : D_UP));
94 t_ws = &(workspaces[screen->current_workspace]);
95 new_row = (direction == D_UP ? (t_ws->rows - 1) : 0);
97 } else if (direction == D_LEFT || direction == D_RIGHT) {
98 if (direction == D_RIGHT && cell_exists(current_col+1, current_row))
100 else if (direction == D_LEFT && cell_exists(current_col-1, current_row))
103 /* Let’s see if there is a screen left/right here to which we can switch */
104 LOG("container is at %d with width %d\n", container->x, container->width);
106 int destination_x = (direction == D_LEFT ? (container->x - 1) : (container->x + container->width + 1));
107 if ((screen = get_screen_containing(destination_x, container->y)) == NULL) {
108 LOG("Wrapping screen around horizontally\n");
109 screen = get_screen_most((direction == D_LEFT ? D_RIGHT : D_LEFT));
111 t_ws = &(workspaces[screen->current_workspace]);
112 new_col = (direction == D_LEFT ? (t_ws->cols - 1) : 0);
115 LOG("direction unhandled\n");
119 /* Bounds checking */
120 if (new_col >= t_ws->cols)
121 new_col = (t_ws->cols - 1);
122 if (new_row >= t_ws->rows)
123 new_row = (t_ws->rows - 1);
125 if (t_ws->table[new_col][new_row]->currently_focused != NULL)
126 set_focus(conn, t_ws->table[new_col][new_row]->currently_focused);
130 * Tries to move the window inside its current container.
132 * Returns true if the window could be moved, false otherwise.
135 static bool move_current_window_in_container(xcb_connection_t *conn, Client *client,
136 direction_t direction) {
137 assert(client->container != NULL);
139 Client *other = (direction == D_UP ? CIRCLEQ_PREV(client, clients) :
140 CIRCLEQ_NEXT(client, clients));
142 if (other == CIRCLEQ_END(&(client->container->clients)))
145 LOG("i can do that\n");
146 /* We can move the client inside its current container */
147 CIRCLEQ_REMOVE(&(client->container->clients), client, clients);
148 if (direction == D_UP)
149 CIRCLEQ_INSERT_BEFORE(&(client->container->clients), other, client, clients);
150 else CIRCLEQ_INSERT_AFTER(&(client->container->clients), other, client, clients);
156 * Moves the current window to the given direction, creating a column/row if
160 static void move_current_window(xcb_connection_t *conn, direction_t direction) {
161 LOG("moving window to direction %s\n", (direction == D_UP ? "up" : (direction == D_DOWN ? "down" :
162 (direction == D_LEFT ? "left" : "right"))));
163 /* Get current window */
164 Container *container = CUR_CELL,
167 /* There has to be a container, see focus_window() */
168 assert(container != NULL);
170 /* If there is no window or the dock window is focused, we’re done */
171 if (container->currently_focused == NULL ||
172 container->currently_focused->dock)
175 /* As soon as the client is moved away, the next client in the old
176 * container needs to get focus, if any. Therefore, we save it here. */
177 Client *current_client = container->currently_focused;
178 Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
179 if (to_focus == NULL)
180 to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
184 /* TODO: If we’re at the left-most position, move the rest of the table right */
185 if (current_col == 0)
188 new = CUR_TABLE[--current_col][current_row];
191 if (current_col == (c_ws->cols-1))
192 expand_table_cols(c_ws);
194 new = CUR_TABLE[++current_col][current_row];
197 /* TODO: if we’re at the up-most position, move the rest of the table down */
198 if (move_current_window_in_container(conn, current_client, D_UP) ||
202 new = CUR_TABLE[current_col][--current_row];
205 if (move_current_window_in_container(conn, current_client, D_DOWN))
208 if (current_row == (c_ws->rows-1))
209 expand_table_rows(c_ws);
211 new = CUR_TABLE[current_col][++current_row];
215 /* Remove it from the old container and put it into the new one */
216 remove_client_from_container(conn, current_client, container);
217 CIRCLEQ_INSERT_TAIL(&(new->clients), current_client, clients);
219 /* Update data structures */
220 current_client->container = new;
221 container->currently_focused = to_focus;
222 new->currently_focused = current_client;
224 Workspace *workspace = container->workspace;
226 /* delete all empty columns/rows */
227 cleanup_table(conn, workspace);
229 /* Fix colspan/rowspan if it’d overlap */
230 fix_colrowspan(conn, workspace);
234 set_focus(conn, current_client);
238 * "Snaps" the current container (not possible for windows, because it works at table base)
239 * to the given direction, that is, adjusts cellspan/rowspan
242 static void snap_current_container(xcb_connection_t *conn, direction_t direction) {
243 LOG("snapping container to direction %d\n", direction);
245 Container *container = CUR_CELL;
247 assert(container != NULL);
251 /* Snap to the left is actually a move to the left and then a snap right */
252 if (!cell_exists(container->col - 1, container->row) ||
253 CUR_TABLE[container->col-1][container->row]->currently_focused != NULL) {
254 LOG("cannot snap to left - the cell is already used\n");
258 move_current_window(conn, D_LEFT);
259 snap_current_container(conn, D_RIGHT);
262 /* Check if the cell is used */
263 int new_col = container->col + container->colspan;
264 if (!cell_exists(new_col, container->row) ||
265 CUR_TABLE[new_col][container->row]->currently_focused != NULL) {
266 LOG("cannot snap to right - the cell is already used\n");
270 /* Check if there are other cells with rowspan, which are in our way.
271 * If so, reduce their rowspan. */
272 for (int i = container->row-1; i >= 0; i--) {
273 LOG("we got cell %d, %d with rowspan %d\n",
274 new_col, i, CUR_TABLE[new_col][i]->rowspan);
275 while ((CUR_TABLE[new_col][i]->rowspan-1) >= (container->row - i))
276 CUR_TABLE[new_col][i]->rowspan--;
277 LOG("new rowspan = %d\n", CUR_TABLE[new_col][i]->rowspan);
280 container->colspan++;
284 if (!cell_exists(container->col, container->row - 1) ||
285 CUR_TABLE[container->col][container->row-1]->currently_focused != NULL) {
286 LOG("cannot snap to top - the cell is already used\n");
290 move_current_window(conn, D_UP);
291 snap_current_container(conn, D_DOWN);
294 LOG("snapping down\n");
295 int new_row = container->row + container->rowspan;
296 if (!cell_exists(container->col, new_row) ||
297 CUR_TABLE[container->col][new_row]->currently_focused != NULL) {
298 LOG("cannot snap down - the cell is already used\n");
302 for (int i = container->col-1; i >= 0; i--) {
303 LOG("we got cell %d, %d with colspan %d\n",
304 i, new_row, CUR_TABLE[i][new_row]->colspan);
305 while ((CUR_TABLE[i][new_row]->colspan-1) >= (container->col - i))
306 CUR_TABLE[i][new_row]->colspan--;
307 LOG("new colspan = %d\n", CUR_TABLE[i][new_row]->colspan);
311 container->rowspan++;
320 * Moves the currently selected window to the given workspace
323 static void move_current_window_to_workspace(xcb_connection_t *conn, int workspace) {
324 LOG("Moving current window to workspace %d\n", workspace);
326 Container *container = CUR_CELL;
328 assert(container != NULL);
330 /* t_ws (to workspace) is just a container pointer to the workspace we’re switching to */
331 Workspace *t_ws = &(workspaces[workspace-1]);
333 Client *current_client = container->currently_focused;
334 if (current_client == NULL) {
335 LOG("No currently focused client in current container.\n");
338 Client *to_focus = CIRCLEQ_NEXT_OR_NULL(&(container->clients), current_client, clients);
339 if (to_focus == NULL)
340 to_focus = CIRCLEQ_PREV_OR_NULL(&(container->clients), current_client, clients);
342 if (t_ws->screen == NULL) {
343 LOG("initializing new workspace, setting num to %d\n", workspace-1);
344 t_ws->screen = container->workspace->screen;
345 /* Copy the dimensions from the virtual screen */
346 memcpy(&(t_ws->rect), &(container->workspace->screen->rect), sizeof(Rect));
349 Container *to_container = t_ws->table[t_ws->current_col][t_ws->current_row];
351 assert(to_container != NULL);
353 CIRCLEQ_REMOVE(&(container->clients), current_client, clients);
354 SLIST_REMOVE(&(container->workspace->focus_stack), current_client, Client, focus_clients);
356 CIRCLEQ_INSERT_TAIL(&(to_container->clients), current_client, clients);
357 SLIST_INSERT_HEAD(&(to_container->workspace->focus_stack), current_client, focus_clients);
360 current_client->container = to_container;
361 container->currently_focused = to_focus;
362 to_container->currently_focused = current_client;
364 /* If we’re moving it to an invisible screen, we need to unmap it */
365 if (to_container->workspace->screen->current_workspace != to_container->workspace->num) {
366 LOG("This workspace is not visible, unmapping\n");
367 xcb_unmap_window(conn, current_client->frame);
370 /* delete all empty columns/rows */
371 cleanup_table(conn, container->workspace);
376 static void show_workspace(xcb_connection_t *conn, int workspace) {
378 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
379 /* t_ws (to workspace) is just a convenience pointer to the workspace we’re switching to */
380 Workspace *t_ws = &(workspaces[workspace-1]);
382 LOG("show_workspace(%d)\n", workspace);
384 /* Store current_row/current_col */
385 c_ws->current_row = current_row;
386 c_ws->current_col = current_col;
388 /* Check if the workspace has not been used yet */
389 if (t_ws->screen == NULL) {
390 LOG("initializing new workspace, setting num to %d\n", workspace);
391 t_ws->screen = c_ws->screen;
392 /* Copy the dimensions from the virtual screen */
393 memcpy(&(t_ws->rect), &(t_ws->screen->rect), sizeof(Rect));
396 if (c_ws->screen != t_ws->screen) {
397 /* We need to switch to the other screen first */
398 LOG("moving over to other screen.\n");
399 c_ws = &(workspaces[t_ws->screen->current_workspace]);
400 current_col = c_ws->current_col;
401 current_row = c_ws->current_row;
402 if (CUR_CELL->currently_focused != NULL)
403 warp_pointer_into(conn, CUR_CELL->currently_focused);
405 Rect *dims = &(c_ws->screen->rect);
406 xcb_warp_pointer(conn, XCB_NONE, root, 0, 0, 0, 0,
407 dims->x + (dims->width / 2), dims->y + (dims->height / 2));
411 /* Check if we need to change something or if we’re already there */
412 if (c_ws->screen->current_workspace == (workspace-1))
415 t_ws->screen->current_workspace = workspace-1;
417 /* TODO: does grabbing the server actually bring us any (speed)advantages? */
418 //xcb_grab_server(conn);
420 ignore_enter_notify_forall(conn, c_ws, true);
422 /* Unmap all clients of the current workspace */
423 int unmapped_clients = 0;
425 CIRCLEQ_FOREACH(client, &(c_ws->table[cols][rows]->clients), clients) {
426 xcb_unmap_window(conn, client->frame);
430 /* If we did not unmap any clients, the workspace is empty and we can destroy it */
431 if (unmapped_clients == 0)
434 /* Unmap the stack windows on the current workspace, if any */
435 struct Stack_Window *stack_win;
436 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
437 if (stack_win->container->workspace == c_ws)
438 xcb_unmap_window(conn, stack_win->window);
440 ignore_enter_notify_forall(conn, c_ws, false);
442 c_ws = &workspaces[workspace-1];
443 current_row = c_ws->current_row;
444 current_col = c_ws->current_col;
445 LOG("new current row = %d, current col = %d\n", current_row, current_col);
447 ignore_enter_notify_forall(conn, c_ws, true);
449 /* Map all clients on the new workspace */
451 CIRCLEQ_FOREACH(client, &(c_ws->table[cols][rows]->clients), clients)
452 xcb_map_window(conn, client->frame);
454 /* Map all stack windows, if any */
455 SLIST_FOREACH(stack_win, &stack_wins, stack_windows)
456 if (stack_win->container->workspace == c_ws)
457 xcb_map_window(conn, stack_win->window);
459 ignore_enter_notify_forall(conn, c_ws, false);
461 /* Restore focus on the new workspace */
462 if (CUR_CELL->currently_focused != NULL)
463 set_focus(conn, CUR_CELL->currently_focused);
464 else xcb_set_input_focus(conn, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
466 //xcb_ungrab_server(conn);
472 * Parses a command, see file CMDMODE for more information
475 void parse_command(xcb_connection_t *conn, const char *command) {
476 LOG("--- parsing command \"%s\" ---\n", command);
477 /* Hmm, just to be sure */
478 if (command[0] == '\0')
481 /* Is it an <exec>? */
482 if (strncmp(command, "exec ", strlen("exec ")) == 0) {
483 LOG("starting \"%s\"\n", command + strlen("exec "));
484 start_application(command+strlen("exec "));
488 /* Is it <restart>? */
489 if (strncmp(command, "restart", strlen("restart")) == 0) {
490 LOG("restarting \"%s\"...\n", application_path);
491 execl(application_path, application_path, NULL);
495 /* Is it 'f' for fullscreen? */
496 if (command[0] == 'f') {
497 if (CUR_CELL->currently_focused == NULL)
499 toggle_fullscreen(conn, CUR_CELL->currently_focused);
503 /* Is it just 's' for stacking or 'd' for default? */
504 if ((command[0] == 's' || command[0] == 'd') && (command[1] == '\0')) {
505 LOG("Switching mode for current container\n");
506 switch_layout_mode(conn, CUR_CELL, (command[0] == 's' ? MODE_STACK : MODE_DEFAULT));
510 enum { WITH_WINDOW, WITH_CONTAINER } with = WITH_WINDOW;
512 /* Is it a <with>? */
513 if (command[0] == 'w') {
515 /* TODO: implement */
516 if (command[0] == 'c') {
517 with = WITH_CONTAINER;
520 LOG("not yet implemented.\n");
525 /* It's a normal <cmd> */
527 enum { ACTION_FOCUS, ACTION_MOVE, ACTION_SNAP } action = ACTION_FOCUS;
528 direction_t direction;
529 int times = strtol(command, &rest, 10);
531 LOG("Invalid command (\"%s\")\n", command);
536 /* No rest? This was a tag number, not a times specification */
537 show_workspace(conn, times);
541 if (*rest == 'm' || *rest == 's') {
542 action = (*rest == 'm' ? ACTION_MOVE : ACTION_SNAP);
546 int workspace = strtol(rest, &rest, 10);
549 LOG("Invalid command (\"%s\")\n", command);
554 move_current_window_to_workspace(conn, workspace);
558 /* Now perform action to <where> */
559 while (*rest != '\0') {
562 else if (*rest == 'j')
564 else if (*rest == 'k')
566 else if (*rest == 'l')
569 LOG("unknown direction: %c\n", *rest);
573 if (action == ACTION_FOCUS) {
574 focus_thing(conn, direction, (with == WITH_WINDOW ? THING_WINDOW : THING_CONTAINER));
576 else if (action == ACTION_MOVE)
577 move_current_window(conn, direction);
578 else if (action == ACTION_SNAP)
579 snap_current_container(conn, direction);
584 LOG("--- done ---\n");