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 = true;
22 if (con_is_floating(con)) {
23 LOG("Container is already in floating mode, not doing anything.\n");
27 /* 1: If the container is a workspace container, we need to create a new
28 * split-container with the same orientation and make that one floating. We
29 * cannot touch the workspace container itself because floating containers
30 * are children of the workspace. */
31 if (con->type == CT_WORKSPACE) {
32 LOG("This is a workspace, creating new container around content\n");
33 /* TODO: refactor this with src/con.c:con_set_layout */
34 Con *new = con_new(NULL);
36 new->orientation = con->orientation;
38 /* since the new container will be set into floating mode directly
39 * afterwards, we need to copy the workspace rect. */
40 memcpy(&(new->rect), &(con->rect), sizeof(Rect));
42 Con *old_focused = TAILQ_FIRST(&(con->focus_head));
43 if (old_focused == TAILQ_END(&(con->focus_head)))
46 /* 4: move the existing cons of this workspace below the new con */
47 DLOG("Moving cons\n");
49 while (!TAILQ_EMPTY(&(con->nodes_head))) {
50 child = TAILQ_FIRST(&(con->nodes_head));
52 con_attach(child, new, true);
55 /* 4: attach the new split container to the workspace */
56 DLOG("Attaching new split to ws\n");
57 con_attach(new, con, false);
60 con_focus(old_focused);
66 /* 1: detach the container from its parent */
67 /* TODO: refactor this with tree_close() */
68 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
69 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
71 con_fix_percent(con->parent);
73 /* 2: create a new container to render the decoration on, add
74 * it as a floating window to the workspace */
75 Con *nc = con_new(NULL);
76 /* we need to set the parent afterwards instead of passing it as an
77 * argument to con_new() because nc would be inserted into the tiling layer
79 nc->parent = con_get_workspace(con);
81 /* check if the parent container is empty and close it if so */
82 if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) && con_num_children(con->parent) == 0) {
83 DLOG("Old container empty after setting this child to floating, closing\n");
84 tree_close(con->parent, false, false);
88 asprintf(&name, "[i3 con] floatingcon around %p", con);
92 /* find the height for the decorations */
93 i3Font *font = load_font(conn, config.font);
94 int deco_height = font->height + 5;
96 DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height);
98 /* add pixels for the decoration */
99 /* TODO: don’t add them when the user automatically puts new windows into
100 * 1pixel/borderless mode */
101 nc->rect.height += deco_height + 4;
103 DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
104 nc->orientation = NO_ORIENTATION;
105 nc->type = CT_FLOATING_CON;
106 TAILQ_INSERT_TAIL(&(nc->parent->floating_head), nc, floating_windows);
107 TAILQ_INSERT_TAIL(&(nc->parent->focus_head), nc, focused);
109 /* 3: attach the child to the new parent container */
112 con->floating = FLOATING_USER_ON;
114 /* Some clients (like GIMP’s color picker window) get mapped
115 * to (0, 0), so we push them to a reasonable position
116 * (centered over their leader) */
117 if (nc->rect.x == 0 && nc->rect.y == 0) {
119 if (con->window && con->window->leader != XCB_NONE &&
120 (leader = con_by_window_id(con->window->leader)) != NULL) {
121 DLOG("Centering above leader\n");
122 nc->rect.x = leader->rect.x + (leader->rect.width / 2) - (nc->rect.width / 2);
123 nc->rect.y = leader->rect.y + (leader->rect.height / 2) - (nc->rect.height / 2);
125 /* center the window on workspace as fallback */
126 Con *ws = nc->parent;
127 nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
128 nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
132 /* render the cons to get initial window_rect correct */
133 render_con(nc, false);
134 render_con(con, false);
136 TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
137 TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
138 // TODO: don’t influence focus handling when Con was not focused before.
143 void floating_disable(Con *con, bool automatic) {
144 if (!con_is_floating(con)) {
145 LOG("Container isn't floating, not doing anything.\n");
149 /* 1: detach from parent container */
150 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
151 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
153 /* 2: kill parent container */
154 TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
155 TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
156 tree_close(con->parent, false, false);
158 /* 3: re-attach to the parent of the currently focused con on the workspace
159 * this floating con was on */
160 Con *focused = con_descend_focused(con_get_workspace(con));
161 /* if there is no other container on this workspace, focused will be the
162 * workspace itself */
163 if (focused->type == CT_WORKSPACE)
164 con->parent = focused;
165 else con->parent = focused->parent;
167 /* con_fix_percent will adjust the percent value */
170 TAILQ_INSERT_TAIL(&(con->parent->nodes_head), con, nodes);
171 TAILQ_INSERT_TAIL(&(con->parent->focus_head), con, focused);
173 con->floating = FLOATING_USER_OFF;
175 con_fix_percent(con->parent);
176 // TODO: don’t influence focus handling when Con was not focused before.
181 * Toggles floating mode for the given container.
183 * If the automatic flag is set to true, this was an automatic update by a change of the
184 * window class from the application which can be overwritten by the user.
187 void toggle_floating_mode(Con *con, bool automatic) {
188 /* see if the client is already floating */
189 if (con_is_floating(con)) {
190 LOG("already floating, re-setting to tiling\n");
192 floating_disable(con, automatic);
196 floating_enable(con, automatic);
200 * Raises the given container in the list of floating containers
203 void floating_raise_con(Con *con) {
204 DLOG("Raising floating con %p / %s\n", con, con->name);
205 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
206 TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
209 DRAGGING_CB(drag_window_callback) {
210 struct xcb_button_press_event_t *event = extra;
212 /* Reposition the client correctly while moving */
213 con->rect.x = old_rect->x + (new_x - event->root_x);
214 con->rect.y = old_rect->y + (new_y - event->root_y);
215 /* TODO: don’t re-render the whole tree just because we change
216 * coordinates of a floating window */
218 x_push_changes(croot);
222 * Called when the user clicked on the titlebar of a floating window.
223 * Calls the drag_pointer function with the drag_window callback
226 void floating_drag_window(Con *con, xcb_button_press_event_t *event) {
227 DLOG("floating_drag_window\n");
229 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
234 * This is an ugly data structure which we need because there is no standard
235 * way of having nested functions (only available as a gcc extension at the
236 * moment, clang doesn’t support it) or blocks (only available as a clang
237 * extension and only on Mac OS X systems at the moment).
240 struct resize_window_callback_params {
243 xcb_button_press_event_t *event;
246 DRAGGING_CB(resize_window_callback) {
247 struct resize_window_callback_params *params = extra;
248 xcb_button_press_event_t *event = params->event;
249 border_t corner = params->corner;
251 int32_t dest_x = con->rect.x;
252 int32_t dest_y = con->rect.y;
254 uint32_t dest_height;
256 double ratio = (double) old_rect->width / old_rect->height;
258 /* First guess: We resize by exactly the amount the mouse moved,
259 * taking into account in which corner the client was grabbed */
260 if (corner & BORDER_LEFT)
261 dest_width = old_rect->width - (new_x - event->root_x);
262 else dest_width = old_rect->width + (new_x - event->root_x);
264 if (corner & BORDER_TOP)
265 dest_height = old_rect->height - (new_y - event->root_y);
266 else dest_height = old_rect->height + (new_y - event->root_y);
268 /* TODO: minimum window size */
270 /* Obey minimum window size */
271 dest_width = max(dest_width, client_min_width(client));
272 dest_height = max(dest_height, client_min_height(client));
275 /* User wants to keep proportions, so we may have to adjust our values */
276 if (params->proportional) {
277 dest_width = max(dest_width, (int) (dest_height * ratio));
278 dest_height = max(dest_height, (int) (dest_width / ratio));
281 /* If not the lower right corner is grabbed, we must also reposition
282 * the client by exactly the amount we resized it */
283 if (corner & BORDER_LEFT)
284 dest_x = old_rect->x + (old_rect->width - dest_width);
286 if (corner & BORDER_TOP)
287 dest_y = old_rect->y + (old_rect->height - dest_height);
289 con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height };
291 /* TODO: don’t re-render the whole tree just because we change
292 * coordinates of a floating window */
294 x_push_changes(croot);
298 * Called when the user clicked on a floating window while holding the
299 * floating_modifier and the right mouse button.
300 * Calls the drag_pointer function with the resize_window callback
303 void floating_resize_window(Con *con, bool proportional,
304 xcb_button_press_event_t *event) {
305 DLOG("floating_resize_window\n");
307 /* corner saves the nearest corner to the original click. It contains
308 * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
311 if (event->event_x <= (con->rect.width / 2))
312 corner |= BORDER_LEFT;
313 else corner |= BORDER_RIGHT;
315 if (event->event_y <= (con->rect.height / 2))
316 corner |= BORDER_TOP;
317 else corner |= BORDER_RIGHT;
319 struct resize_window_callback_params params = { corner, proportional, event };
321 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, ¶ms);
325 * This function grabs your pointer and lets you drag stuff around (borders).
326 * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
327 * and the given callback will be called with the parameters specified (client,
328 * border on which the click originally was), the original rect of the client,
329 * the event and the new coordinates (x, y).
332 void drag_pointer(Con *con, xcb_button_press_event_t *event, xcb_window_t
333 confine_to, border_t border, callback_t callback, void *extra)
335 uint32_t new_x, new_y;
338 memcpy(&old_rect, &(con->rect), sizeof(Rect));
340 /* Grab the pointer */
341 /* TODO: returncode */
342 xcb_grab_pointer(conn,
343 false, /* get all pointer events specified by the following mask */
344 root, /* grab the root window */
345 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
346 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
347 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
348 confine_to, /* confine_to = in which window should the cursor stay */
349 XCB_NONE, /* don’t display a special cursor */
352 /* Go into our own event loop */
355 xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
356 /* I’ve always wanted to have my own eventhandler… */
357 while ((inside_event = xcb_wait_for_event(conn))) {
358 /* We now handle all events we can get using xcb_poll_for_event */
360 /* Same as get_event_handler in xcb */
361 int nr = inside_event->response_type;
363 /* An error occured */
364 //handle_event(NULL, conn, inside_event);
369 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
373 case XCB_BUTTON_RELEASE:
376 case XCB_MOTION_NOTIFY:
377 /* motion_notify events are saved for later */
378 FREE(last_motion_notify);
379 last_motion_notify = inside_event;
382 case XCB_UNMAP_NOTIFY:
383 DLOG("Unmap-notify, aborting\n");
384 xcb_event_handle(&evenths, inside_event);
388 DLOG("Passing to original handler\n");
389 /* Use original handler */
390 xcb_event_handle(&evenths, inside_event);
393 if (last_motion_notify != inside_event)
395 } while ((inside_event = xcb_poll_for_event(conn)) != NULL);
397 if (last_motion_notify == NULL)
400 new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
401 new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
403 callback(con, &old_rect, new_x, new_y, extra);
404 FREE(last_motion_notify);
407 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
413 * Changes focus in the given direction for floating clients.
415 * Changing to the left/right means going to the previous/next floating client,
416 * changing to top/bottom means cycling through the Z-index.
419 void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
420 DLOG("floating focus\n");
422 if (direction == D_LEFT || direction == D_RIGHT) {
423 /* Go to the next/previous floating client */
426 while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
427 TAILQ_NEXT(currently_focused, floating_clients))) !=
428 TAILQ_END(&(currently_focused->workspace->floating_clients))) {
429 if (!client->floating)
431 set_focus(conn, client, true);
438 * Moves the client 10px to the specified direction.
441 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
442 DLOG("floating move\n");
444 Rect destination = currently_focused->rect;
445 Rect *screen = &(currently_focused->workspace->output->rect);
460 /* to make static analyzers happy */
465 /* Prevent windows from vanishing completely */
466 if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
467 (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
468 (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
469 (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
470 DLOG("boundary check failed, not moving\n");
474 currently_focused->rect = destination;
475 reposition_client(conn, currently_focused);
477 /* Because reposition_client does not send a faked configure event (only resize does),
478 * we need to initiate that on our own */
479 fake_absolute_configure_notify(conn, currently_focused);
480 /* fake_absolute_configure_notify flushes */
484 * Hides all floating clients (or show them if they are currently hidden) on
485 * the specified workspace.
488 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
491 workspace->floating_hidden = !workspace->floating_hidden;
492 DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
493 TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
494 if (workspace->floating_hidden)
495 client_unmap(conn, client);
496 else client_map(conn, client);
499 /* If we just unmapped all floating windows we should ensure that the focus
500 * is set correctly, that ist, to the first non-floating client in stack */
501 if (workspace->floating_hidden)
502 SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
503 if (client_is_floating(client))
505 set_focus(conn, client, true);