2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
6 * © 2009-2010 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * src/floating.c: contains all functions for handling floating clients
17 extern xcb_connection_t *conn;
19 void floating_enable(Con *con, bool automatic) {
20 if (con_is_floating(con)) {
21 LOG("Container is already in floating mode, not doing anything.\n");
25 /* 1: detach the container from its parent */
26 /* TODO: refactor this with tree_close() */
27 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
28 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
30 con_fix_percent(con->parent, WINDOW_REMOVE);
32 /* 2: create a new container to render the decoration on, add
33 * it as a floating window to the workspace */
34 Con *nc = con_new(NULL);
35 /* we need to set the parent afterwards instead of passing it as an
36 * argument to con_new() because nc would be inserted into the tiling layer
38 nc->parent = con_get_workspace(con);
41 asprintf(&name, "[i3 con] floatingcon around %p", con);
46 /* add pixels for the decoration */
47 /* TODO: don’t add them when the user automatically puts new windows into
48 * 1pixel/borderless mode */
49 nc->rect.height += 17 + 2;
51 nc->orientation = NO_ORIENTATION;
52 nc->type = CT_FLOATING_CON;
53 TAILQ_INSERT_TAIL(&(nc->parent->floating_head), nc, floating_windows);
54 TAILQ_INSERT_TAIL(&(nc->parent->focus_head), nc, focused);
56 /* 3: attach the child to the new parent container */
57 con->old_parent = con->parent;
59 con->floating = FLOATING_USER_ON;
61 /* Some clients (like GIMP’s color picker window) get mapped
62 * to (0, 0), so we push them to a reasonable position
63 * (centered over their leader) */
64 if (nc->rect.x == 0 && nc->rect.y == 0) {
66 if (con->window && con->window->leader != XCB_NONE &&
67 (leader = con_by_window_id(con->window->leader)) != NULL) {
68 DLOG("Centering above leader\n");
69 nc->rect.x = leader->rect.x + (leader->rect.width / 2) - (nc->rect.width / 2);
70 nc->rect.y = leader->rect.y + (leader->rect.height / 2) - (nc->rect.height / 2);
72 /* center the window on workspace as fallback */
74 nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
75 nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
79 TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
80 TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
83 void floating_disable(Con *con, bool automatic) {
84 if (!con_is_floating(con)) {
85 LOG("Container isn't floating, not doing anything.\n");
89 assert(con->old_parent != NULL);
91 /* 1: detach from parent container */
92 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
93 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
95 /* 2: kill parent container */
96 TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
97 TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
98 tree_close(con->parent, false);
100 /* 3: re-attach to previous parent */
101 con->parent = con->old_parent;
102 TAILQ_INSERT_TAIL(&(con->parent->nodes_head), con, nodes);
103 TAILQ_INSERT_TAIL(&(con->parent->focus_head), con, focused);
105 con->floating = FLOATING_USER_OFF;
107 con_fix_percent(con->parent, WINDOW_ADD);
112 * Toggles floating mode for the given container.
114 * If the automatic flag is set to true, this was an automatic update by a change of the
115 * window class from the application which can be overwritten by the user.
118 void toggle_floating_mode(Con *con, bool automatic) {
119 //i3Font *font = load_font(conn, config.font);
121 /* see if the client is already floating */
122 if (con_is_floating(con)) {
123 LOG("already floating, re-setting to tiling\n");
125 floating_disable(con, automatic);
129 floating_enable(con, automatic);
134 DLOG("Not putting dock client into floating mode\n");
139 DLOG("This client is already in floating (container == NULL), re-inserting\n");
141 Workspace *ws = client->workspace;
142 SLIST_FOREACH(next_tiling, &(ws->focus_stack), focus_clients)
143 if (!client_is_floating(next_tiling))
145 /* If there are no tiling clients on this workspace, there can only be one
146 * container: the first one */
147 if (next_tiling == TAILQ_END(&(ws->focus_stack)))
148 con = ws->table[0][0];
149 else con = next_tiling->container;
151 /* Remove the client from the list of floating clients */
152 TAILQ_REMOVE(&(ws->floating_clients), client, floating_clients);
154 DLOG("destination container = %p\n", con);
155 Client *old_focused = con->currently_focused;
156 /* Preserve position/size */
157 memcpy(&(client->floating_rect), &(client->rect), sizeof(Rect));
159 client->floating = FLOATING_USER_OFF;
160 client->container = con;
162 if (old_focused != NULL && !old_focused->dock)
163 CIRCLEQ_INSERT_AFTER(&(con->clients), old_focused, client, clients);
164 else CIRCLEQ_INSERT_TAIL(&(con->clients), client, clients);
166 DLOG("Re-inserted the window.\n");
167 con->currently_focused = client;
169 client_set_below_floating(conn, client);
171 render_container(conn, con);
177 DLOG("Entering floating for client %08x\n", client->child);
179 /* Remove the client of its container */
180 client_remove_from_container(conn, client, con, false);
181 client->container = NULL;
183 /* Add the client to the list of floating clients for its workspace */
184 TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
186 if (con->currently_focused == client) {
187 DLOG("Need to re-adjust currently_focused\n");
188 /* Get the next client in the focus stack for this particular container */
189 con->currently_focused = get_last_focused_client(conn, con, NULL);
193 client->floating = FLOATING_AUTO_ON;
194 else client->floating = FLOATING_USER_ON;
196 /* Initialize the floating position from the position in tiling mode, if this
197 * client never was floating (x == -1) */
198 if (client->floating_rect.x == -1) {
199 /* Copy over the position */
200 client->floating_rect.x = client->rect.x;
201 client->floating_rect.y = client->rect.y;
203 /* Copy size the other direction */
204 client->child_rect.width = client->floating_rect.width;
205 client->child_rect.height = client->floating_rect.height;
207 client->rect.width = client->child_rect.width + 2 + 2;
208 client->rect.height = client->child_rect.height + (font->height + 2 + 2) + 2;
210 DLOG("copying size from tiling (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
211 client->floating_rect.width, client->floating_rect.height);
213 /* If the client was already in floating before we restore the old position / size */
214 DLOG("using: (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
215 client->floating_rect.width, client->floating_rect.height);
216 memcpy(&(client->rect), &(client->floating_rect), sizeof(Rect));
219 /* Raise the client */
220 xcb_raise_window(conn, client->frame);
221 reposition_client(conn, client);
222 resize_client(conn, client);
223 /* redecorate_window flushes */
224 redecorate_window(conn, client);
226 /* Re-render the tiling layout of this container */
227 render_container(conn, con);
234 * Removes the floating client from its workspace and attaches it to the new workspace.
235 * This is centralized here because it may happen if you move it via keyboard and
236 * if you move it using your mouse.
239 void floating_assign_to_workspace(Client *client, Workspace *new_workspace) {
240 /* Remove from focus stack and list of floating clients */
241 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
242 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
244 if (client->workspace->fullscreen_client == client)
245 client->workspace->fullscreen_client = NULL;
247 /* Insert into destination focus stack and list of floating clients */
248 client->workspace = new_workspace;
249 SLIST_INSERT_HEAD(&(client->workspace->focus_stack), client, focus_clients);
250 TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
251 if (client->fullscreen)
252 client->workspace->fullscreen_client = client;
256 * This is an ugly data structure which we need because there is no standard
257 * way of having nested functions (only available as a gcc extension at the
258 * moment, clang doesn’t support it) or blocks (only available as a clang
259 * extension and only on Mac OS X systems at the moment).
262 struct resize_callback_params {
264 xcb_button_press_event_t *event;
267 DRAGGING_CB(resize_callback) {
268 struct resize_callback_params *params = extra;
269 xcb_button_press_event_t *event = params->event;
270 switch (params->border) {
272 int new_width = old_rect->width + (new_x - event->root_x);
273 if ((new_width < 0) ||
274 (new_width < client_min_width(client) && client->rect.width >= new_width))
276 client->rect.width = new_width;
280 case BORDER_BOTTOM: {
281 int new_height = old_rect->height + (new_y - event->root_y);
282 if ((new_height < 0) ||
283 (new_height < client_min_height(client) && client->rect.height >= new_height))
285 client->rect.height = old_rect->height + (new_y - event->root_y);
290 int new_height = old_rect->height + (event->root_y - new_y);
291 if ((new_height < 0) ||
292 (new_height < client_min_height(client) && client->rect.height >= new_height))
295 client->rect.y = old_rect->y + (new_y - event->root_y);
296 client->rect.height = new_height;
301 int new_width = old_rect->width + (event->root_x - new_x);
302 if ((new_width < 0) ||
303 (new_width < client_min_width(client) && client->rect.width >= new_width))
305 client->rect.x = old_rect->x + (new_x - event->root_x);
306 client->rect.width = new_width;
311 /* Push the new position/size to X11 */
312 reposition_client(conn, client);
313 resize_client(conn, client);
319 * Called whenever the user clicks on a border (not the titlebar!) of a floating window.
320 * Determines on which border the user clicked and launches the drag_pointer function
321 * with the resize_callback.
324 int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
325 DLOG("floating border click\n");
329 if (event->event_y < 2)
331 else if (event->event_y >= (client->rect.height - 2))
332 border = BORDER_BOTTOM;
333 else if (event->event_x <= 2)
334 border = BORDER_LEFT;
335 else if (event->event_x >= (client->rect.width - 2))
336 border = BORDER_RIGHT;
338 DLOG("Not on any border, not doing anything.\n");
342 DLOG("border = %d\n", border);
344 struct resize_callback_params params = { border, event };
346 drag_pointer(conn, client, event, XCB_NONE, border, resize_callback, ¶ms);
352 DRAGGING_CB(drag_window_callback) {
353 struct xcb_button_press_event_t *event = extra;
355 /* Reposition the client correctly while moving */
356 con->rect.x = old_rect->x + (new_x - event->root_x);
357 con->rect.y = old_rect->y + (new_y - event->root_y);
358 /* TODO: don’t re-render the whole tree just because we change
359 * coordinates of a floating window */
361 x_push_changes(croot);
365 * Called when the user clicked on the titlebar of a floating window.
366 * Calls the drag_pointer function with the drag_window callback
369 void floating_drag_window(Con *con, xcb_button_press_event_t *event) {
370 DLOG("floating_drag_window\n");
372 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
377 * This is an ugly data structure which we need because there is no standard
378 * way of having nested functions (only available as a gcc extension at the
379 * moment, clang doesn’t support it) or blocks (only available as a clang
380 * extension and only on Mac OS X systems at the moment).
383 struct resize_window_callback_params {
386 xcb_button_press_event_t *event;
389 DRAGGING_CB(resize_window_callback) {
390 struct resize_window_callback_params *params = extra;
391 xcb_button_press_event_t *event = params->event;
392 border_t corner = params->corner;
394 int32_t dest_x = con->rect.x;
395 int32_t dest_y = con->rect.y;
397 uint32_t dest_height;
399 double ratio = (double) old_rect->width / old_rect->height;
401 /* First guess: We resize by exactly the amount the mouse moved,
402 * taking into account in which corner the client was grabbed */
403 if (corner & BORDER_LEFT)
404 dest_width = old_rect->width - (new_x - event->root_x);
405 else dest_width = old_rect->width + (new_x - event->root_x);
407 if (corner & BORDER_TOP)
408 dest_height = old_rect->height - (new_y - event->root_y);
409 else dest_height = old_rect->height + (new_y - event->root_y);
411 /* TODO: minimum window size */
413 /* Obey minimum window size */
414 dest_width = max(dest_width, client_min_width(client));
415 dest_height = max(dest_height, client_min_height(client));
418 /* User wants to keep proportions, so we may have to adjust our values */
419 if (params->proportional) {
420 dest_width = max(dest_width, (int) (dest_height * ratio));
421 dest_height = max(dest_height, (int) (dest_width / ratio));
424 /* If not the lower right corner is grabbed, we must also reposition
425 * the client by exactly the amount we resized it */
426 if (corner & BORDER_LEFT)
427 dest_x = old_rect->x + (old_rect->width - dest_width);
429 if (corner & BORDER_TOP)
430 dest_y = old_rect->y + (old_rect->height - dest_height);
432 con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height };
434 /* TODO: don’t re-render the whole tree just because we change
435 * coordinates of a floating window */
437 x_push_changes(croot);
441 * Called when the user clicked on a floating window while holding the
442 * floating_modifier and the right mouse button.
443 * Calls the drag_pointer function with the resize_window callback
446 void floating_resize_window(Con *con, bool proportional,
447 xcb_button_press_event_t *event) {
448 DLOG("floating_resize_window\n");
450 /* corner saves the nearest corner to the original click. It contains
451 * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
454 if (event->event_x <= (con->rect.width / 2))
455 corner |= BORDER_LEFT;
456 else corner |= BORDER_RIGHT;
458 if (event->event_y <= (con->rect.height / 2))
459 corner |= BORDER_TOP;
460 else corner |= BORDER_RIGHT;
462 struct resize_window_callback_params params = { corner, proportional, event };
464 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, ¶ms);
468 * This function grabs your pointer and lets you drag stuff around (borders).
469 * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
470 * and the given callback will be called with the parameters specified (client,
471 * border on which the click originally was), the original rect of the client,
472 * the event and the new coordinates (x, y).
475 void drag_pointer(Con *con, xcb_button_press_event_t *event, xcb_window_t
476 confine_to, border_t border, callback_t callback, void *extra)
478 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
479 uint32_t new_x, new_y;
482 memcpy(&old_rect, &(con->rect), sizeof(Rect));
484 /* Grab the pointer */
485 /* TODO: returncode */
486 xcb_grab_pointer(conn,
487 false, /* get all pointer events specified by the following mask */
488 root, /* grab the root window */
489 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
490 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
491 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
492 confine_to, /* confine_to = in which window should the cursor stay */
493 XCB_NONE, /* don’t display a special cursor */
496 /* Go into our own event loop */
499 xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
500 /* I’ve always wanted to have my own eventhandler… */
501 while ((inside_event = xcb_wait_for_event(conn))) {
502 /* We now handle all events we can get using xcb_poll_for_event */
504 /* Same as get_event_handler in xcb */
505 int nr = inside_event->response_type;
507 /* An error occured */
508 //handle_event(NULL, conn, inside_event);
513 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
517 case XCB_BUTTON_RELEASE:
520 case XCB_MOTION_NOTIFY:
521 /* motion_notify events are saved for later */
522 FREE(last_motion_notify);
523 last_motion_notify = inside_event;
526 case XCB_UNMAP_NOTIFY:
527 DLOG("Unmap-notify, aborting\n");
528 xcb_event_handle(&evenths, inside_event);
532 DLOG("Passing to original handler\n");
533 /* Use original handler */
534 xcb_event_handle(&evenths, inside_event);
537 if (last_motion_notify != inside_event)
539 } while ((inside_event = xcb_poll_for_event(conn)) != NULL);
541 if (last_motion_notify == NULL)
544 new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
545 new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
547 callback(con, &old_rect, new_x, new_y, extra);
548 FREE(last_motion_notify);
551 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
557 * Changes focus in the given direction for floating clients.
559 * Changing to the left/right means going to the previous/next floating client,
560 * changing to top/bottom means cycling through the Z-index.
563 void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
564 DLOG("floating focus\n");
566 if (direction == D_LEFT || direction == D_RIGHT) {
567 /* Go to the next/previous floating client */
570 while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
571 TAILQ_NEXT(currently_focused, floating_clients))) !=
572 TAILQ_END(&(currently_focused->workspace->floating_clients))) {
573 if (!client->floating)
575 set_focus(conn, client, true);
582 * Moves the client 10px to the specified direction.
585 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
586 DLOG("floating move\n");
588 Rect destination = currently_focused->rect;
589 Rect *screen = &(currently_focused->workspace->output->rect);
604 /* to make static analyzers happy */
609 /* Prevent windows from vanishing completely */
610 if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
611 (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
612 (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
613 (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
614 DLOG("boundary check failed, not moving\n");
618 currently_focused->rect = destination;
619 reposition_client(conn, currently_focused);
621 /* Because reposition_client does not send a faked configure event (only resize does),
622 * we need to initiate that on our own */
623 fake_absolute_configure_notify(conn, currently_focused);
624 /* fake_absolute_configure_notify flushes */
628 * Hides all floating clients (or show them if they are currently hidden) on
629 * the specified workspace.
632 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
635 workspace->floating_hidden = !workspace->floating_hidden;
636 DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
637 TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
638 if (workspace->floating_hidden)
639 client_unmap(conn, client);
640 else client_map(conn, client);
643 /* If we just unmapped all floating windows we should ensure that the focus
644 * is set correctly, that ist, to the first non-floating client in stack */
645 if (workspace->floating_hidden)
646 SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
647 if (client_is_floating(client))
649 set_focus(conn, client, true);