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 nc->parent = con_get_workspace(con);
37 /* add pixels for the decoration */
38 /* TODO: don’t add them when the user automatically puts new windows into
39 * 1pixel/borderless mode */
40 nc->rect.height += 17 + 2;
42 nc->orientation = NO_ORIENTATION;
43 nc->type = CT_FLOATING_CON;
44 TAILQ_INSERT_TAIL(&(nc->parent->floating_head), nc, floating_windows);
45 TAILQ_INSERT_TAIL(&(nc->parent->focus_head), nc, focused);
47 /* 3: attach the child to the new parent container */
48 con->old_parent = con->parent;
50 con->floating = FLOATING_USER_ON;
52 /* Some clients (like GIMP’s color picker window) get mapped
53 * to (0, 0), so we push them to a reasonable position
54 * (centered over their leader) */
55 if (nc->rect.x == 0 && nc->rect.y == 0) {
57 if (con->window && con->window->leader != XCB_NONE &&
58 (leader = con_by_window_id(con->window->leader)) != NULL) {
59 DLOG("Centering above leader\n");
60 nc->rect.x = leader->rect.x + (leader->rect.width / 2) - (nc->rect.width / 2);
61 nc->rect.y = leader->rect.y + (leader->rect.height / 2) - (nc->rect.height / 2);
63 /* center the window on workspace as fallback */
65 nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
66 nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
70 TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
71 TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
74 void floating_disable(Con *con, bool automatic) {
75 if (!con_is_floating(con)) {
76 LOG("Container isn't floating, not doing anything.\n");
80 assert(con->old_parent != NULL);
82 /* 1: detach from parent container */
83 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
84 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
86 /* 2: kill parent container */
87 TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
88 TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
89 tree_close(con->parent, false);
91 /* 3: re-attach to previous parent */
92 con->parent = con->old_parent;
93 TAILQ_INSERT_TAIL(&(con->parent->nodes_head), con, nodes);
94 TAILQ_INSERT_TAIL(&(con->parent->focus_head), con, focused);
96 con->floating = FLOATING_USER_OFF;
98 con_fix_percent(con->parent, WINDOW_ADD);
103 * Toggles floating mode for the given container.
105 * If the automatic flag is set to true, this was an automatic update by a change of the
106 * window class from the application which can be overwritten by the user.
109 void toggle_floating_mode(Con *con, bool automatic) {
110 //i3Font *font = load_font(conn, config.font);
112 /* see if the client is already floating */
113 if (con_is_floating(con)) {
114 LOG("already floating, re-setting to tiling\n");
116 floating_disable(con, automatic);
120 floating_enable(con, automatic);
125 DLOG("Not putting dock client into floating mode\n");
130 DLOG("This client is already in floating (container == NULL), re-inserting\n");
132 Workspace *ws = client->workspace;
133 SLIST_FOREACH(next_tiling, &(ws->focus_stack), focus_clients)
134 if (!client_is_floating(next_tiling))
136 /* If there are no tiling clients on this workspace, there can only be one
137 * container: the first one */
138 if (next_tiling == TAILQ_END(&(ws->focus_stack)))
139 con = ws->table[0][0];
140 else con = next_tiling->container;
142 /* Remove the client from the list of floating clients */
143 TAILQ_REMOVE(&(ws->floating_clients), client, floating_clients);
145 DLOG("destination container = %p\n", con);
146 Client *old_focused = con->currently_focused;
147 /* Preserve position/size */
148 memcpy(&(client->floating_rect), &(client->rect), sizeof(Rect));
150 client->floating = FLOATING_USER_OFF;
151 client->container = con;
153 if (old_focused != NULL && !old_focused->dock)
154 CIRCLEQ_INSERT_AFTER(&(con->clients), old_focused, client, clients);
155 else CIRCLEQ_INSERT_TAIL(&(con->clients), client, clients);
157 DLOG("Re-inserted the window.\n");
158 con->currently_focused = client;
160 client_set_below_floating(conn, client);
162 render_container(conn, con);
168 DLOG("Entering floating for client %08x\n", client->child);
170 /* Remove the client of its container */
171 client_remove_from_container(conn, client, con, false);
172 client->container = NULL;
174 /* Add the client to the list of floating clients for its workspace */
175 TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
177 if (con->currently_focused == client) {
178 DLOG("Need to re-adjust currently_focused\n");
179 /* Get the next client in the focus stack for this particular container */
180 con->currently_focused = get_last_focused_client(conn, con, NULL);
184 client->floating = FLOATING_AUTO_ON;
185 else client->floating = FLOATING_USER_ON;
187 /* Initialize the floating position from the position in tiling mode, if this
188 * client never was floating (x == -1) */
189 if (client->floating_rect.x == -1) {
190 /* Copy over the position */
191 client->floating_rect.x = client->rect.x;
192 client->floating_rect.y = client->rect.y;
194 /* Copy size the other direction */
195 client->child_rect.width = client->floating_rect.width;
196 client->child_rect.height = client->floating_rect.height;
198 client->rect.width = client->child_rect.width + 2 + 2;
199 client->rect.height = client->child_rect.height + (font->height + 2 + 2) + 2;
201 DLOG("copying size from tiling (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
202 client->floating_rect.width, client->floating_rect.height);
204 /* If the client was already in floating before we restore the old position / size */
205 DLOG("using: (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
206 client->floating_rect.width, client->floating_rect.height);
207 memcpy(&(client->rect), &(client->floating_rect), sizeof(Rect));
210 /* Raise the client */
211 xcb_raise_window(conn, client->frame);
212 reposition_client(conn, client);
213 resize_client(conn, client);
214 /* redecorate_window flushes */
215 redecorate_window(conn, client);
217 /* Re-render the tiling layout of this container */
218 render_container(conn, con);
225 * Removes the floating client from its workspace and attaches it to the new workspace.
226 * This is centralized here because it may happen if you move it via keyboard and
227 * if you move it using your mouse.
230 void floating_assign_to_workspace(Client *client, Workspace *new_workspace) {
231 /* Remove from focus stack and list of floating clients */
232 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
233 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
235 if (client->workspace->fullscreen_client == client)
236 client->workspace->fullscreen_client = NULL;
238 /* Insert into destination focus stack and list of floating clients */
239 client->workspace = new_workspace;
240 SLIST_INSERT_HEAD(&(client->workspace->focus_stack), client, focus_clients);
241 TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
242 if (client->fullscreen)
243 client->workspace->fullscreen_client = client;
247 * This is an ugly data structure which we need because there is no standard
248 * way of having nested functions (only available as a gcc extension at the
249 * moment, clang doesn’t support it) or blocks (only available as a clang
250 * extension and only on Mac OS X systems at the moment).
253 struct resize_callback_params {
255 xcb_button_press_event_t *event;
258 DRAGGING_CB(resize_callback) {
259 struct resize_callback_params *params = extra;
260 xcb_button_press_event_t *event = params->event;
261 switch (params->border) {
263 int new_width = old_rect->width + (new_x - event->root_x);
264 if ((new_width < 0) ||
265 (new_width < client_min_width(client) && client->rect.width >= new_width))
267 client->rect.width = new_width;
271 case BORDER_BOTTOM: {
272 int new_height = old_rect->height + (new_y - event->root_y);
273 if ((new_height < 0) ||
274 (new_height < client_min_height(client) && client->rect.height >= new_height))
276 client->rect.height = old_rect->height + (new_y - event->root_y);
281 int new_height = old_rect->height + (event->root_y - new_y);
282 if ((new_height < 0) ||
283 (new_height < client_min_height(client) && client->rect.height >= new_height))
286 client->rect.y = old_rect->y + (new_y - event->root_y);
287 client->rect.height = new_height;
292 int new_width = old_rect->width + (event->root_x - new_x);
293 if ((new_width < 0) ||
294 (new_width < client_min_width(client) && client->rect.width >= new_width))
296 client->rect.x = old_rect->x + (new_x - event->root_x);
297 client->rect.width = new_width;
302 /* Push the new position/size to X11 */
303 reposition_client(conn, client);
304 resize_client(conn, client);
310 * Called whenever the user clicks on a border (not the titlebar!) of a floating window.
311 * Determines on which border the user clicked and launches the drag_pointer function
312 * with the resize_callback.
315 int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
316 DLOG("floating border click\n");
320 if (event->event_y < 2)
322 else if (event->event_y >= (client->rect.height - 2))
323 border = BORDER_BOTTOM;
324 else if (event->event_x <= 2)
325 border = BORDER_LEFT;
326 else if (event->event_x >= (client->rect.width - 2))
327 border = BORDER_RIGHT;
329 DLOG("Not on any border, not doing anything.\n");
333 DLOG("border = %d\n", border);
335 struct resize_callback_params params = { border, event };
337 drag_pointer(conn, client, event, XCB_NONE, border, resize_callback, ¶ms);
343 DRAGGING_CB(drag_window_callback) {
344 struct xcb_button_press_event_t *event = extra;
346 /* Reposition the client correctly while moving */
347 con->rect.x = old_rect->x + (new_x - event->root_x);
348 con->rect.y = old_rect->y + (new_y - event->root_y);
349 /* TODO: don’t re-render the whole tree just because we change
350 * coordinates of a floating window */
352 x_push_changes(croot);
356 * Called when the user clicked on the titlebar of a floating window.
357 * Calls the drag_pointer function with the drag_window callback
360 void floating_drag_window(Con *con, xcb_button_press_event_t *event) {
361 DLOG("floating_drag_window\n");
363 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
368 * This is an ugly data structure which we need because there is no standard
369 * way of having nested functions (only available as a gcc extension at the
370 * moment, clang doesn’t support it) or blocks (only available as a clang
371 * extension and only on Mac OS X systems at the moment).
374 struct resize_window_callback_params {
377 xcb_button_press_event_t *event;
380 DRAGGING_CB(resize_window_callback) {
381 struct resize_window_callback_params *params = extra;
382 xcb_button_press_event_t *event = params->event;
383 border_t corner = params->corner;
385 int32_t dest_x = con->rect.x;
386 int32_t dest_y = con->rect.y;
388 uint32_t dest_height;
390 double ratio = (double) old_rect->width / old_rect->height;
392 /* First guess: We resize by exactly the amount the mouse moved,
393 * taking into account in which corner the client was grabbed */
394 if (corner & BORDER_LEFT)
395 dest_width = old_rect->width - (new_x - event->root_x);
396 else dest_width = old_rect->width + (new_x - event->root_x);
398 if (corner & BORDER_TOP)
399 dest_height = old_rect->height - (new_y - event->root_y);
400 else dest_height = old_rect->height + (new_y - event->root_y);
402 /* TODO: minimum window size */
404 /* Obey minimum window size */
405 dest_width = max(dest_width, client_min_width(client));
406 dest_height = max(dest_height, client_min_height(client));
409 /* User wants to keep proportions, so we may have to adjust our values */
410 if (params->proportional) {
411 dest_width = max(dest_width, (int) (dest_height * ratio));
412 dest_height = max(dest_height, (int) (dest_width / ratio));
415 /* If not the lower right corner is grabbed, we must also reposition
416 * the client by exactly the amount we resized it */
417 if (corner & BORDER_LEFT)
418 dest_x = old_rect->x + (old_rect->width - dest_width);
420 if (corner & BORDER_TOP)
421 dest_y = old_rect->y + (old_rect->height - dest_height);
423 con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height };
425 /* TODO: don’t re-render the whole tree just because we change
426 * coordinates of a floating window */
428 x_push_changes(croot);
432 * Called when the user clicked on a floating window while holding the
433 * floating_modifier and the right mouse button.
434 * Calls the drag_pointer function with the resize_window callback
437 void floating_resize_window(Con *con, bool proportional,
438 xcb_button_press_event_t *event) {
439 DLOG("floating_resize_window\n");
441 /* corner saves the nearest corner to the original click. It contains
442 * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
445 if (event->event_x <= (con->rect.width / 2))
446 corner |= BORDER_LEFT;
447 else corner |= BORDER_RIGHT;
449 if (event->event_y <= (con->rect.height / 2))
450 corner |= BORDER_TOP;
451 else corner |= BORDER_RIGHT;
453 struct resize_window_callback_params params = { corner, proportional, event };
455 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, ¶ms);
459 * This function grabs your pointer and lets you drag stuff around (borders).
460 * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
461 * and the given callback will be called with the parameters specified (client,
462 * border on which the click originally was), the original rect of the client,
463 * the event and the new coordinates (x, y).
466 void drag_pointer(Con *con, xcb_button_press_event_t *event, xcb_window_t
467 confine_to, border_t border, callback_t callback, void *extra)
469 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
470 uint32_t new_x, new_y;
473 memcpy(&old_rect, &(con->rect), sizeof(Rect));
475 /* Grab the pointer */
476 /* TODO: returncode */
477 xcb_grab_pointer(conn,
478 false, /* get all pointer events specified by the following mask */
479 root, /* grab the root window */
480 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
481 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
482 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
483 confine_to, /* confine_to = in which window should the cursor stay */
484 XCB_NONE, /* don’t display a special cursor */
487 /* Go into our own event loop */
490 xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
491 /* I’ve always wanted to have my own eventhandler… */
492 while ((inside_event = xcb_wait_for_event(conn))) {
493 /* We now handle all events we can get using xcb_poll_for_event */
495 /* Same as get_event_handler in xcb */
496 int nr = inside_event->response_type;
498 /* An error occured */
499 //handle_event(NULL, conn, inside_event);
504 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
508 case XCB_BUTTON_RELEASE:
511 case XCB_MOTION_NOTIFY:
512 /* motion_notify events are saved for later */
513 FREE(last_motion_notify);
514 last_motion_notify = inside_event;
517 case XCB_UNMAP_NOTIFY:
518 DLOG("Unmap-notify, aborting\n");
519 xcb_event_handle(&evenths, inside_event);
523 DLOG("Passing to original handler\n");
524 /* Use original handler */
525 xcb_event_handle(&evenths, inside_event);
528 if (last_motion_notify != inside_event)
530 } while ((inside_event = xcb_poll_for_event(conn)) != NULL);
532 if (last_motion_notify == NULL)
535 new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
536 new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
538 callback(con, &old_rect, new_x, new_y, extra);
539 FREE(last_motion_notify);
542 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
548 * Changes focus in the given direction for floating clients.
550 * Changing to the left/right means going to the previous/next floating client,
551 * changing to top/bottom means cycling through the Z-index.
554 void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
555 DLOG("floating focus\n");
557 if (direction == D_LEFT || direction == D_RIGHT) {
558 /* Go to the next/previous floating client */
561 while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
562 TAILQ_NEXT(currently_focused, floating_clients))) !=
563 TAILQ_END(&(currently_focused->workspace->floating_clients))) {
564 if (!client->floating)
566 set_focus(conn, client, true);
573 * Moves the client 10px to the specified direction.
576 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
577 DLOG("floating move\n");
579 Rect destination = currently_focused->rect;
580 Rect *screen = &(currently_focused->workspace->output->rect);
595 /* to make static analyzers happy */
600 /* Prevent windows from vanishing completely */
601 if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
602 (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
603 (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
604 (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
605 DLOG("boundary check failed, not moving\n");
609 currently_focused->rect = destination;
610 reposition_client(conn, currently_focused);
612 /* Because reposition_client does not send a faked configure event (only resize does),
613 * we need to initiate that on our own */
614 fake_absolute_configure_notify(conn, currently_focused);
615 /* fake_absolute_configure_notify flushes */
619 * Hides all floating clients (or show them if they are currently hidden) on
620 * the specified workspace.
623 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
626 workspace->floating_hidden = !workspace->floating_hidden;
627 DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
628 TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
629 if (workspace->floating_hidden)
630 client_unmap(conn, client);
631 else client_map(conn, client);
634 /* If we just unmapped all floating windows we should ensure that the focus
635 * is set correctly, that ist, to the first non-floating client in stack */
636 if (workspace->floating_hidden)
637 SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
638 if (client_is_floating(client))
640 set_focus(conn, client, true);