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 /* 1: detach the container from its parent */
21 /* TODO: refactor this with tree_close() */
22 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
23 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
27 TAILQ_FOREACH(child, &(con->parent->nodes_head), nodes)
29 /* TODO: better document why this math works */
30 double fix = 1.0 / (1.0 - (1.0 / (children+1)));
31 TAILQ_FOREACH(child, &(con->parent->nodes_head), nodes) {
32 if (child->percent <= 0.0)
34 child->percent *= fix;
37 /* 2: create a new container to render the decoration on, add
38 * it as a floating window to the workspace */
39 Con *nc = con_new(NULL);
40 nc->parent = con_get_workspace(con);
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;
53 TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
54 TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
57 void floating_disable(Con *con, bool automatic) {
58 assert(con->old_parent != NULL);
60 /* 1: detach from parent container */
61 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
62 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
64 /* 2: kill parent container */
65 TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
66 TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
67 tree_close(con->parent, false);
69 /* 3: re-attach to previous parent */
70 con->parent = con->old_parent;
71 TAILQ_INSERT_TAIL(&(con->parent->nodes_head), con, nodes);
72 TAILQ_INSERT_TAIL(&(con->parent->focus_head), con, focused);
74 con->floating = FLOATING_USER_OFF;
79 * Toggles floating mode for the given container.
81 * If the automatic flag is set to true, this was an automatic update by a change of the
82 * window class from the application which can be overwritten by the user.
85 void toggle_floating_mode(Con *con, bool automatic) {
86 //i3Font *font = load_font(conn, config.font);
88 /* see if the client is already floating */
89 if (con_is_floating(con)) {
90 LOG("already floating, re-setting to tiling\n");
92 floating_disable(con, automatic);
96 floating_enable(con, automatic);
101 DLOG("Not putting dock client into floating mode\n");
106 DLOG("This client is already in floating (container == NULL), re-inserting\n");
108 Workspace *ws = client->workspace;
109 SLIST_FOREACH(next_tiling, &(ws->focus_stack), focus_clients)
110 if (!client_is_floating(next_tiling))
112 /* If there are no tiling clients on this workspace, there can only be one
113 * container: the first one */
114 if (next_tiling == TAILQ_END(&(ws->focus_stack)))
115 con = ws->table[0][0];
116 else con = next_tiling->container;
118 /* Remove the client from the list of floating clients */
119 TAILQ_REMOVE(&(ws->floating_clients), client, floating_clients);
121 DLOG("destination container = %p\n", con);
122 Client *old_focused = con->currently_focused;
123 /* Preserve position/size */
124 memcpy(&(client->floating_rect), &(client->rect), sizeof(Rect));
126 client->floating = FLOATING_USER_OFF;
127 client->container = con;
129 if (old_focused != NULL && !old_focused->dock)
130 CIRCLEQ_INSERT_AFTER(&(con->clients), old_focused, client, clients);
131 else CIRCLEQ_INSERT_TAIL(&(con->clients), client, clients);
133 DLOG("Re-inserted the window.\n");
134 con->currently_focused = client;
136 client_set_below_floating(conn, client);
138 render_container(conn, con);
144 DLOG("Entering floating for client %08x\n", client->child);
146 /* Remove the client of its container */
147 client_remove_from_container(conn, client, con, false);
148 client->container = NULL;
150 /* Add the client to the list of floating clients for its workspace */
151 TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
153 if (con->currently_focused == client) {
154 DLOG("Need to re-adjust currently_focused\n");
155 /* Get the next client in the focus stack for this particular container */
156 con->currently_focused = get_last_focused_client(conn, con, NULL);
160 client->floating = FLOATING_AUTO_ON;
161 else client->floating = FLOATING_USER_ON;
163 /* Initialize the floating position from the position in tiling mode, if this
164 * client never was floating (x == -1) */
165 if (client->floating_rect.x == -1) {
166 /* Copy over the position */
167 client->floating_rect.x = client->rect.x;
168 client->floating_rect.y = client->rect.y;
170 /* Copy size the other direction */
171 client->child_rect.width = client->floating_rect.width;
172 client->child_rect.height = client->floating_rect.height;
174 client->rect.width = client->child_rect.width + 2 + 2;
175 client->rect.height = client->child_rect.height + (font->height + 2 + 2) + 2;
177 DLOG("copying size from tiling (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
178 client->floating_rect.width, client->floating_rect.height);
180 /* If the client was already in floating before we restore the old position / size */
181 DLOG("using: (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
182 client->floating_rect.width, client->floating_rect.height);
183 memcpy(&(client->rect), &(client->floating_rect), sizeof(Rect));
186 /* Raise the client */
187 xcb_raise_window(conn, client->frame);
188 reposition_client(conn, client);
189 resize_client(conn, client);
190 /* redecorate_window flushes */
191 redecorate_window(conn, client);
193 /* Re-render the tiling layout of this container */
194 render_container(conn, con);
201 * Removes the floating client from its workspace and attaches it to the new workspace.
202 * This is centralized here because it may happen if you move it via keyboard and
203 * if you move it using your mouse.
206 void floating_assign_to_workspace(Client *client, Workspace *new_workspace) {
207 /* Remove from focus stack and list of floating clients */
208 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
209 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
211 if (client->workspace->fullscreen_client == client)
212 client->workspace->fullscreen_client = NULL;
214 /* Insert into destination focus stack and list of floating clients */
215 client->workspace = new_workspace;
216 SLIST_INSERT_HEAD(&(client->workspace->focus_stack), client, focus_clients);
217 TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
218 if (client->fullscreen)
219 client->workspace->fullscreen_client = client;
223 * This is an ugly data structure which we need because there is no standard
224 * way of having nested functions (only available as a gcc extension at the
225 * moment, clang doesn’t support it) or blocks (only available as a clang
226 * extension and only on Mac OS X systems at the moment).
229 struct resize_callback_params {
231 xcb_button_press_event_t *event;
234 DRAGGING_CB(resize_callback) {
235 struct resize_callback_params *params = extra;
236 xcb_button_press_event_t *event = params->event;
237 switch (params->border) {
239 int new_width = old_rect->width + (new_x - event->root_x);
240 if ((new_width < 0) ||
241 (new_width < client_min_width(client) && client->rect.width >= new_width))
243 client->rect.width = new_width;
247 case BORDER_BOTTOM: {
248 int new_height = old_rect->height + (new_y - event->root_y);
249 if ((new_height < 0) ||
250 (new_height < client_min_height(client) && client->rect.height >= new_height))
252 client->rect.height = old_rect->height + (new_y - event->root_y);
257 int new_height = old_rect->height + (event->root_y - new_y);
258 if ((new_height < 0) ||
259 (new_height < client_min_height(client) && client->rect.height >= new_height))
262 client->rect.y = old_rect->y + (new_y - event->root_y);
263 client->rect.height = new_height;
268 int new_width = old_rect->width + (event->root_x - new_x);
269 if ((new_width < 0) ||
270 (new_width < client_min_width(client) && client->rect.width >= new_width))
272 client->rect.x = old_rect->x + (new_x - event->root_x);
273 client->rect.width = new_width;
278 /* Push the new position/size to X11 */
279 reposition_client(conn, client);
280 resize_client(conn, client);
286 * Called whenever the user clicks on a border (not the titlebar!) of a floating window.
287 * Determines on which border the user clicked and launches the drag_pointer function
288 * with the resize_callback.
291 int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
292 DLOG("floating border click\n");
296 if (event->event_y < 2)
298 else if (event->event_y >= (client->rect.height - 2))
299 border = BORDER_BOTTOM;
300 else if (event->event_x <= 2)
301 border = BORDER_LEFT;
302 else if (event->event_x >= (client->rect.width - 2))
303 border = BORDER_RIGHT;
305 DLOG("Not on any border, not doing anything.\n");
309 DLOG("border = %d\n", border);
311 struct resize_callback_params params = { border, event };
313 drag_pointer(conn, client, event, XCB_NONE, border, resize_callback, ¶ms);
319 DRAGGING_CB(drag_window_callback) {
320 struct xcb_button_press_event_t *event = extra;
322 /* Reposition the client correctly while moving */
323 con->rect.x = old_rect->x + (new_x - event->root_x);
324 con->rect.y = old_rect->y + (new_y - event->root_y);
325 /* TODO: don’t re-render the whole tree just because we change
326 * coordinates of a floating window */
328 x_push_changes(croot);
332 * Called when the user clicked on the titlebar of a floating window.
333 * Calls the drag_pointer function with the drag_window callback
336 void floating_drag_window(Con *con, xcb_button_press_event_t *event) {
337 DLOG("floating_drag_window\n");
339 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
344 * This is an ugly data structure which we need because there is no standard
345 * way of having nested functions (only available as a gcc extension at the
346 * moment, clang doesn’t support it) or blocks (only available as a clang
347 * extension and only on Mac OS X systems at the moment).
350 struct resize_window_callback_params {
353 xcb_button_press_event_t *event;
356 DRAGGING_CB(resize_window_callback) {
357 struct resize_window_callback_params *params = extra;
358 xcb_button_press_event_t *event = params->event;
359 border_t corner = params->corner;
361 int32_t dest_x = con->rect.x;
362 int32_t dest_y = con->rect.y;
364 uint32_t dest_height;
366 double ratio = (double) old_rect->width / old_rect->height;
368 /* First guess: We resize by exactly the amount the mouse moved,
369 * taking into account in which corner the client was grabbed */
370 if (corner & BORDER_LEFT)
371 dest_width = old_rect->width - (new_x - event->root_x);
372 else dest_width = old_rect->width + (new_x - event->root_x);
374 if (corner & BORDER_TOP)
375 dest_height = old_rect->height - (new_y - event->root_y);
376 else dest_height = old_rect->height + (new_y - event->root_y);
378 /* TODO: minimum window size */
380 /* Obey minimum window size */
381 dest_width = max(dest_width, client_min_width(client));
382 dest_height = max(dest_height, client_min_height(client));
385 /* User wants to keep proportions, so we may have to adjust our values */
386 if (params->proportional) {
387 dest_width = max(dest_width, (int) (dest_height * ratio));
388 dest_height = max(dest_height, (int) (dest_width / ratio));
391 /* If not the lower right corner is grabbed, we must also reposition
392 * the client by exactly the amount we resized it */
393 if (corner & BORDER_LEFT)
394 dest_x = old_rect->x + (old_rect->width - dest_width);
396 if (corner & BORDER_TOP)
397 dest_y = old_rect->y + (old_rect->height - dest_height);
399 con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height };
401 /* TODO: don’t re-render the whole tree just because we change
402 * coordinates of a floating window */
404 x_push_changes(croot);
408 * Called when the user clicked on a floating window while holding the
409 * floating_modifier and the right mouse button.
410 * Calls the drag_pointer function with the resize_window callback
413 void floating_resize_window(Con *con, bool proportional,
414 xcb_button_press_event_t *event) {
415 DLOG("floating_resize_window\n");
417 /* corner saves the nearest corner to the original click. It contains
418 * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
421 if (event->event_x <= (con->rect.width / 2))
422 corner |= BORDER_LEFT;
423 else corner |= BORDER_RIGHT;
425 if (event->event_y <= (con->rect.height / 2))
426 corner |= BORDER_TOP;
427 else corner |= BORDER_RIGHT;
429 struct resize_window_callback_params params = { corner, proportional, event };
431 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, ¶ms);
435 * This function grabs your pointer and lets you drag stuff around (borders).
436 * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
437 * and the given callback will be called with the parameters specified (client,
438 * border on which the click originally was), the original rect of the client,
439 * the event and the new coordinates (x, y).
442 void drag_pointer(Con *con, xcb_button_press_event_t *event, xcb_window_t
443 confine_to, border_t border, callback_t callback, void *extra)
445 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
446 uint32_t new_x, new_y;
449 memcpy(&old_rect, &(con->rect), sizeof(Rect));
451 /* Grab the pointer */
452 /* TODO: returncode */
453 xcb_grab_pointer(conn,
454 false, /* get all pointer events specified by the following mask */
455 root, /* grab the root window */
456 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
457 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
458 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
459 confine_to, /* confine_to = in which window should the cursor stay */
460 XCB_NONE, /* don’t display a special cursor */
463 /* Go into our own event loop */
466 xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
467 /* I’ve always wanted to have my own eventhandler… */
468 while ((inside_event = xcb_wait_for_event(conn))) {
469 /* We now handle all events we can get using xcb_poll_for_event */
471 /* Same as get_event_handler in xcb */
472 int nr = inside_event->response_type;
474 /* An error occured */
475 //handle_event(NULL, conn, inside_event);
480 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
484 case XCB_BUTTON_RELEASE:
487 case XCB_MOTION_NOTIFY:
488 /* motion_notify events are saved for later */
489 FREE(last_motion_notify);
490 last_motion_notify = inside_event;
493 case XCB_UNMAP_NOTIFY:
494 DLOG("Unmap-notify, aborting\n");
495 xcb_event_handle(&evenths, inside_event);
499 DLOG("Passing to original handler\n");
500 /* Use original handler */
501 xcb_event_handle(&evenths, inside_event);
504 if (last_motion_notify != inside_event)
506 } while ((inside_event = xcb_poll_for_event(conn)) != NULL);
508 if (last_motion_notify == NULL)
511 new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
512 new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
514 callback(con, &old_rect, new_x, new_y, extra);
515 FREE(last_motion_notify);
518 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
524 * Changes focus in the given direction for floating clients.
526 * Changing to the left/right means going to the previous/next floating client,
527 * changing to top/bottom means cycling through the Z-index.
530 void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
531 DLOG("floating focus\n");
533 if (direction == D_LEFT || direction == D_RIGHT) {
534 /* Go to the next/previous floating client */
537 while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
538 TAILQ_NEXT(currently_focused, floating_clients))) !=
539 TAILQ_END(&(currently_focused->workspace->floating_clients))) {
540 if (!client->floating)
542 set_focus(conn, client, true);
549 * Moves the client 10px to the specified direction.
552 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
553 DLOG("floating move\n");
555 Rect destination = currently_focused->rect;
556 Rect *screen = &(currently_focused->workspace->output->rect);
571 /* to make static analyzers happy */
576 /* Prevent windows from vanishing completely */
577 if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
578 (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
579 (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
580 (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
581 DLOG("boundary check failed, not moving\n");
585 currently_focused->rect = destination;
586 reposition_client(conn, currently_focused);
588 /* Because reposition_client does not send a faked configure event (only resize does),
589 * we need to initiate that on our own */
590 fake_absolute_configure_notify(conn, currently_focused);
591 /* fake_absolute_configure_notify flushes */
595 * Hides all floating clients (or show them if they are currently hidden) on
596 * the specified workspace.
599 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
602 workspace->floating_hidden = !workspace->floating_hidden;
603 DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
604 TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
605 if (workspace->floating_hidden)
606 client_unmap(conn, client);
607 else client_map(conn, client);
610 /* If we just unmapped all floating windows we should ensure that the focus
611 * is set correctly, that ist, to the first non-floating client in stack */
612 if (workspace->floating_hidden)
613 SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
614 if (client_is_floating(client))
616 set_focus(conn, client, true);