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 bool set_focus = (con == focused);
22 if (con->parent && con->parent->type == CT_DOCKAREA) {
23 LOG("Container is a dock window, not enabling floating mode.\n");
27 if (con_is_floating(con)) {
28 LOG("Container is already in floating mode, not doing anything.\n");
32 /* 1: If the container is a workspace container, we need to create a new
33 * split-container with the same orientation and make that one floating. We
34 * cannot touch the workspace container itself because floating containers
35 * are children of the workspace. */
36 if (con->type == CT_WORKSPACE) {
37 LOG("This is a workspace, creating new container around content\n");
38 if (con_num_children(con) == 0) {
39 LOG("Workspace is empty, aborting\n");
42 /* TODO: refactor this with src/con.c:con_set_layout */
43 Con *new = con_new(NULL, NULL);
45 new->orientation = con->orientation;
47 /* since the new container will be set into floating mode directly
48 * afterwards, we need to copy the workspace rect. */
49 memcpy(&(new->rect), &(con->rect), sizeof(Rect));
51 Con *old_focused = TAILQ_FIRST(&(con->focus_head));
52 if (old_focused == TAILQ_END(&(con->focus_head)))
55 /* 4: move the existing cons of this workspace below the new con */
56 DLOG("Moving cons\n");
58 while (!TAILQ_EMPTY(&(con->nodes_head))) {
59 child = TAILQ_FIRST(&(con->nodes_head));
61 con_attach(child, new, true);
64 /* 4: attach the new split container to the workspace */
65 DLOG("Attaching new split to ws\n");
66 con_attach(new, con, false);
69 con_focus(old_focused);
75 /* 1: detach the container from its parent */
76 /* TODO: refactor this with tree_close() */
77 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
78 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
80 con_fix_percent(con->parent);
82 /* 2: create a new container to render the decoration on, add
83 * it as a floating window to the workspace */
84 Con *nc = con_new(NULL, NULL);
85 /* we need to set the parent afterwards instead of passing it as an
86 * argument to con_new() because nc would be inserted into the tiling layer
88 Con *ws = con_get_workspace(con);
91 /* check if the parent container is empty and close it if so */
92 if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) && con_num_children(con->parent) == 0) {
93 DLOG("Old container empty after setting this child to floating, closing\n");
94 tree_close(con->parent, DONT_KILL_WINDOW, false, false);
98 asprintf(&name, "[i3 con] floatingcon around %p", con);
102 /* find the height for the decorations */
103 int deco_height = config.font.height + 5;
105 DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height);
106 DLOG("Geometry = (%d, %d) with %d x %d\n", con->geometry.x, con->geometry.y, con->geometry.width, con->geometry.height);
107 Rect zero = { 0, 0, 0, 0 };
108 nc->rect = con->geometry;
109 /* If the geometry was not set (split containers), we need to determine a
110 * sensible one by combining the geometry of all children */
111 if (memcmp(&(nc->rect), &zero, sizeof(Rect)) == 0) {
112 DLOG("Geometry not set, combining children\n");
114 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
115 DLOG("child geometry: %d x %d\n", child->geometry.width, child->geometry.height);
116 nc->rect.width += child->geometry.width;
117 nc->rect.height = max(nc->rect.height, child->geometry.height);
120 /* Raise the width/height to at least 75x50 (minimum size for windows) */
121 nc->rect.width = max(nc->rect.width, 75);
122 nc->rect.height = max(nc->rect.height, 50);
123 /* add pixels for the decoration */
124 /* TODO: don’t add them when the user automatically puts new windows into
125 * 1pixel/borderless mode */
126 nc->rect.height += deco_height + 2;
129 /* Honor the X11 border */
130 nc->rect.height += con->border_width * 2;
131 nc->rect.width += con->border_width * 2;
133 /* Some clients (like GIMP’s color picker window) get mapped
134 * to (0, 0), so we push them to a reasonable position
135 * (centered over their leader) */
136 if (nc->rect.x == 0 && nc->rect.y == 0) {
138 if (con->window && con->window->leader != XCB_NONE &&
139 (leader = con_by_window_id(con->window->leader)) != NULL) {
140 DLOG("Centering above leader\n");
141 nc->rect.x = leader->rect.x + (leader->rect.width / 2) - (nc->rect.width / 2);
142 nc->rect.y = leader->rect.y + (leader->rect.height / 2) - (nc->rect.height / 2);
144 /* center the window on workspace as fallback */
145 nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
146 nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
150 /* Sanity check: Are the coordinates on the appropriate output? If not, we
151 * need to change them */
152 Output *current_output = get_output_containing(nc->rect.x, nc->rect.y);
153 Con *correct_output = con_get_output(ws);
154 if (!current_output || current_output->con != correct_output) {
155 DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n",
156 nc->rect.x, nc->rect.y);
157 /* Take the relative coordinates of the current output, then add them
158 * to the coordinate space of the correct output */
159 uint32_t rel_x = (nc->rect.x - (current_output ? current_output->con->rect.x : 0));
160 uint32_t rel_y = (nc->rect.y - (current_output ? current_output->con->rect.y : 0));
161 nc->rect.x = correct_output->rect.x + rel_x;
162 nc->rect.y = correct_output->rect.y + rel_y;
165 DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
166 nc->orientation = NO_ORIENTATION;
167 nc->type = CT_FLOATING_CON;
168 TAILQ_INSERT_TAIL(&(ws->floating_head), nc, floating_windows);
169 TAILQ_INSERT_TAIL(&(ws->focus_head), nc, focused);
171 /* 3: attach the child to the new parent container */
174 con->floating = FLOATING_USER_ON;
176 TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
177 TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
179 /* render the cons to get initial window_rect correct */
180 render_con(nc, false);
181 render_con(con, false);
186 /* Check if we need to re-assign it to a different workspace because of its
187 * coordinates and exit if that was done successfully. */
188 if (floating_maybe_reassign_ws(nc))
191 /* Sanitize coordinates: Check if they are on any output */
192 if (get_output_containing(nc->rect.x, nc->rect.y) != NULL)
195 ELOG("No output found at destination coordinates, centering floating window on current ws\n");
196 nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
197 nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
200 void floating_disable(Con *con, bool automatic) {
201 if (!con_is_floating(con)) {
202 LOG("Container isn't floating, not doing anything.\n");
206 Con *ws = con_get_workspace(con);
208 /* 1: detach from parent container */
209 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
210 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
212 /* 2: kill parent container */
213 TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
214 TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
215 tree_close(con->parent, DONT_KILL_WINDOW, false, false);
217 /* 3: re-attach to the parent of the currently focused con on the workspace
218 * this floating con was on */
219 Con *focused = con_descend_tiling_focused(ws);
221 /* if there is no other container on this workspace, focused will be the
222 * workspace itself */
223 if (focused->type == CT_WORKSPACE)
224 con->parent = focused;
225 else con->parent = focused->parent;
227 /* con_fix_percent will adjust the percent value */
230 TAILQ_INSERT_TAIL(&(con->parent->nodes_head), con, nodes);
231 TAILQ_INSERT_TAIL(&(con->parent->focus_head), con, focused);
233 con->floating = FLOATING_USER_OFF;
235 con_fix_percent(con->parent);
236 // TODO: don’t influence focus handling when Con was not focused before.
241 * Toggles floating mode for the given container.
243 * If the automatic flag is set to true, this was an automatic update by a change of the
244 * window class from the application which can be overwritten by the user.
247 void toggle_floating_mode(Con *con, bool automatic) {
248 /* see if the client is already floating */
249 if (con_is_floating(con)) {
250 LOG("already floating, re-setting to tiling\n");
252 floating_disable(con, automatic);
256 floating_enable(con, automatic);
260 * Raises the given container in the list of floating containers
263 void floating_raise_con(Con *con) {
264 DLOG("Raising floating con %p / %s\n", con, con->name);
265 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
266 TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
270 * Checks if con’s coordinates are within its workspace and re-assigns it to
271 * the actual workspace if not.
274 bool floating_maybe_reassign_ws(Con *con) {
275 Output *output = get_output_containing(
276 con->rect.x + (con->rect.width / 2),
277 con->rect.y + (con->rect.height / 2));
280 ELOG("No output found at destination coordinates?\n");
284 if (con_get_output(con) == output->con) {
285 DLOG("still the same ws\n");
289 DLOG("Need to re-assign!\n");
291 Con *content = output_get_content(output->con);
292 Con *ws = TAILQ_FIRST(&(content->focus_head));
293 DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
294 con_move_to_workspace(con, ws, false, true);
295 con_focus(con_descend_focused(con));
299 DRAGGING_CB(drag_window_callback) {
300 struct xcb_button_press_event_t *event = extra;
302 /* Reposition the client correctly while moving */
303 con->rect.x = old_rect->x + (new_x - event->root_x);
304 con->rect.y = old_rect->y + (new_y - event->root_y);
306 render_con(con, false);
310 /* Check if we cross workspace boundaries while moving */
311 if (!floating_maybe_reassign_ws(con))
317 * Called when the user clicked on the titlebar of a floating window.
318 * Calls the drag_pointer function with the drag_window callback
321 void floating_drag_window(Con *con, xcb_button_press_event_t *event) {
322 DLOG("floating_drag_window\n");
324 /* Push changes before dragging, so that the window gets raised now and not
325 * after the user releases the mouse button */
328 /* Drag the window */
329 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
334 * This is an ugly data structure which we need because there is no standard
335 * way of having nested functions (only available as a gcc extension at the
336 * moment, clang doesn’t support it) or blocks (only available as a clang
337 * extension and only on Mac OS X systems at the moment).
340 struct resize_window_callback_params {
343 xcb_button_press_event_t *event;
346 DRAGGING_CB(resize_window_callback) {
347 struct resize_window_callback_params *params = extra;
348 xcb_button_press_event_t *event = params->event;
349 border_t corner = params->corner;
351 int32_t dest_x = con->rect.x;
352 int32_t dest_y = con->rect.y;
354 uint32_t dest_height;
356 double ratio = (double) old_rect->width / old_rect->height;
358 /* First guess: We resize by exactly the amount the mouse moved,
359 * taking into account in which corner the client was grabbed */
360 if (corner & BORDER_LEFT)
361 dest_width = old_rect->width - (new_x - event->root_x);
362 else dest_width = old_rect->width + (new_x - event->root_x);
364 if (corner & BORDER_TOP)
365 dest_height = old_rect->height - (new_y - event->root_y);
366 else dest_height = old_rect->height + (new_y - event->root_y);
368 /* Obey minimum window size */
369 Rect minimum = con_minimum_size(con);
370 dest_width = max(dest_width, minimum.width);
371 dest_height = max(dest_height, minimum.height);
373 /* User wants to keep proportions, so we may have to adjust our values */
374 if (params->proportional) {
375 dest_width = max(dest_width, (int) (dest_height * ratio));
376 dest_height = max(dest_height, (int) (dest_width / ratio));
379 /* If not the lower right corner is grabbed, we must also reposition
380 * the client by exactly the amount we resized it */
381 if (corner & BORDER_LEFT)
382 dest_x = old_rect->x + (old_rect->width - dest_width);
384 if (corner & BORDER_TOP)
385 dest_y = old_rect->y + (old_rect->height - dest_height);
387 con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height };
389 /* TODO: don’t re-render the whole tree just because we change
390 * coordinates of a floating window */
392 x_push_changes(croot);
396 * Called when the user clicked on a floating window while holding the
397 * floating_modifier and the right mouse button.
398 * Calls the drag_pointer function with the resize_window callback
401 void floating_resize_window(Con *con, bool proportional,
402 xcb_button_press_event_t *event) {
403 DLOG("floating_resize_window\n");
405 /* corner saves the nearest corner to the original click. It contains
406 * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
409 if (event->event_x <= (con->rect.width / 2))
410 corner |= BORDER_LEFT;
411 else corner |= BORDER_RIGHT;
413 if (event->event_y <= (con->rect.height / 2))
414 corner |= BORDER_TOP;
415 else corner |= BORDER_BOTTOM;
417 struct resize_window_callback_params params = { corner, proportional, event };
419 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, ¶ms);
423 * This function grabs your pointer and lets you drag stuff around (borders).
424 * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
425 * and the given callback will be called with the parameters specified (client,
426 * border on which the click originally was), the original rect of the client,
427 * the event and the new coordinates (x, y).
430 void drag_pointer(Con *con, xcb_button_press_event_t *event, xcb_window_t
431 confine_to, border_t border, callback_t callback, void *extra)
433 uint32_t new_x, new_y;
436 memcpy(&old_rect, &(con->rect), sizeof(Rect));
438 /* Grab the pointer */
439 xcb_grab_pointer_cookie_t cookie;
440 xcb_grab_pointer_reply_t *reply;
441 cookie = xcb_grab_pointer(conn,
442 false, /* get all pointer events specified by the following mask */
443 root, /* grab the root window */
444 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
445 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
446 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
447 confine_to, /* confine_to = in which window should the cursor stay */
448 XCB_NONE, /* don’t display a special cursor */
451 if ((reply = xcb_grab_pointer_reply(conn, cookie, NULL)) == NULL) {
452 ELOG("Could not grab pointer\n");
458 /* Go into our own event loop */
461 xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
462 bool loop_done = false;
463 /* I’ve always wanted to have my own eventhandler… */
464 while (!loop_done && (inside_event = xcb_wait_for_event(conn))) {
465 /* We now handle all events we can get using xcb_poll_for_event */
467 /* skip x11 errors */
468 if (inside_event->response_type == 0) {
472 /* Strip off the highest bit (set if the event is generated) */
473 int type = (inside_event->response_type & 0x7F);
476 case XCB_BUTTON_RELEASE:
480 case XCB_MOTION_NOTIFY:
481 /* motion_notify events are saved for later */
482 FREE(last_motion_notify);
483 last_motion_notify = inside_event;
486 case XCB_UNMAP_NOTIFY:
488 case XCB_KEY_RELEASE:
489 DLOG("Unmap-notify, aborting\n");
490 handle_event(type, inside_event);
495 DLOG("Passing to original handler\n");
496 /* Use original handler */
497 handle_event(type, inside_event);
500 if (last_motion_notify != inside_event)
502 } while ((inside_event = xcb_poll_for_event(conn)) != NULL);
504 if (last_motion_notify == NULL)
507 new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
508 new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
510 callback(con, &old_rect, new_x, new_y, extra);
511 FREE(last_motion_notify);
514 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
520 * Changes focus in the given direction for floating clients.
522 * Changing to the left/right means going to the previous/next floating client,
523 * changing to top/bottom means cycling through the Z-index.
526 void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
527 DLOG("floating focus\n");
529 if (direction == D_LEFT || direction == D_RIGHT) {
530 /* Go to the next/previous floating client */
533 while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
534 TAILQ_NEXT(currently_focused, floating_clients))) !=
535 TAILQ_END(&(currently_focused->workspace->floating_clients))) {
536 if (!client->floating)
538 set_focus(conn, client, true);
545 * Moves the client 10px to the specified direction.
548 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
549 DLOG("floating move\n");
551 Rect destination = currently_focused->rect;
552 Rect *screen = &(currently_focused->workspace->output->rect);
567 /* to make static analyzers happy */
572 /* Prevent windows from vanishing completely */
573 if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
574 (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
575 (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
576 (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
577 DLOG("boundary check failed, not moving\n");
581 currently_focused->rect = destination;
582 reposition_client(conn, currently_focused);
584 /* Because reposition_client does not send a faked configure event (only resize does),
585 * we need to initiate that on our own */
586 fake_absolute_configure_notify(conn, currently_focused);
587 /* fake_absolute_configure_notify flushes */
591 * Hides all floating clients (or show them if they are currently hidden) on
592 * the specified workspace.
595 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
598 workspace->floating_hidden = !workspace->floating_hidden;
599 DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
600 TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
601 if (workspace->floating_hidden)
602 client_unmap(conn, client);
603 else client_map(conn, client);
606 /* If we just unmapped all floating windows we should ensure that the focus
607 * is set correctly, that ist, to the first non-floating client in stack */
608 if (workspace->floating_hidden)
609 SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
610 if (client_is_floating(client))
612 set_focus(conn, client, true);