4 * i3 - an improved dynamic tiling window manager
6 * © 2009 Michael Stapelberg and contributors
8 * See file LICENSE for license information.
10 * src/floating.c: contains all functions for handling floating clients
18 #include <xcb/xcb_event.h>
29 #include "workspace.h"
32 * Toggles floating mode for the given client.
33 * Correctly takes care of the position/size (separately stored for tiling/floating mode)
34 * and repositions/resizes/redecorates the client.
36 * If the automatic flag is set to true, this was an automatic update by a change of the
37 * window class from the application which can be overwritten by the user.
40 void toggle_floating_mode(xcb_connection_t *conn, Client *client, bool automatic) {
41 Container *con = client->container;
42 i3Font *font = load_font(conn, config.font);
45 LOG("Not putting dock client into floating mode\n");
50 LOG("This client is already in floating (container == NULL), re-inserting\n");
52 Workspace *ws = client->workspace;
53 SLIST_FOREACH(next_tiling, &(ws->focus_stack), focus_clients)
54 if (!client_is_floating(next_tiling))
56 /* If there are no tiling clients on this workspace, there can only be one
57 * container: the first one */
58 if (next_tiling == TAILQ_END(&(ws->focus_stack)))
59 con = ws->table[0][0];
60 else con = next_tiling->container;
62 /* Remove the client from the list of floating clients */
63 TAILQ_REMOVE(&(ws->floating_clients), client, floating_clients);
65 LOG("destination container = %p\n", con);
66 Client *old_focused = con->currently_focused;
67 /* Preserve position/size */
68 memcpy(&(client->floating_rect), &(client->rect), sizeof(Rect));
70 client->floating = FLOATING_USER_OFF;
71 client->container = con;
73 if (old_focused != NULL && !old_focused->dock)
74 CIRCLEQ_INSERT_AFTER(&(con->clients), old_focused, client, clients);
75 else CIRCLEQ_INSERT_TAIL(&(con->clients), client, clients);
77 LOG("Re-inserted the client into the matrix.\n");
78 con->currently_focused = client;
80 client_set_below_floating(conn, client);
82 render_container(conn, con);
88 LOG("Entering floating for client %08x\n", client->child);
90 /* Remove the client of its container */
91 client_remove_from_container(conn, client, con, false);
92 client->container = NULL;
94 /* Add the client to the list of floating clients for its workspace */
95 TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
97 if (con->currently_focused == client) {
98 LOG("Need to re-adjust currently_focused\n");
99 /* Get the next client in the focus stack for this particular container */
100 con->currently_focused = get_last_focused_client(conn, con, NULL);
104 client->floating = FLOATING_AUTO_ON;
105 else client->floating = FLOATING_USER_ON;
107 /* Initialize the floating position from the position in tiling mode, if this
108 * client never was floating (x == -1) */
109 if (client->floating_rect.x == -1) {
110 /* Copy over the position */
111 client->floating_rect.x = client->rect.x;
112 client->floating_rect.y = client->rect.y;
114 /* Copy size the other direction */
115 client->child_rect.width = client->floating_rect.width;
116 client->child_rect.height = client->floating_rect.height;
118 client->rect.width = client->child_rect.width + 2 + 2;
119 client->rect.height = client->child_rect.height + (font->height + 2 + 2) + 2;
121 LOG("copying size from tiling (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
122 client->floating_rect.width, client->floating_rect.height);
124 /* If the client was already in floating before we restore the old position / size */
125 LOG("using: (%d, %d) size (%d, %d)\n", client->floating_rect.x, client->floating_rect.y,
126 client->floating_rect.width, client->floating_rect.height);
127 memcpy(&(client->rect), &(client->floating_rect), sizeof(Rect));
130 /* Raise the client */
131 xcb_raise_window(conn, client->frame);
132 reposition_client(conn, client);
133 resize_client(conn, client);
134 /* redecorate_window flushes */
135 redecorate_window(conn, client);
137 /* Re-render the tiling layout of this container */
138 render_container(conn, con);
143 * Removes the floating client from its workspace and attaches it to the new workspace.
144 * This is centralized here because it may happen if you move it via keyboard and
145 * if you move it using your mouse.
148 void floating_assign_to_workspace(Client *client, Workspace *new_workspace) {
149 /* Remove from focus stack and list of floating clients */
150 SLIST_REMOVE(&(client->workspace->focus_stack), client, Client, focus_clients);
151 TAILQ_REMOVE(&(client->workspace->floating_clients), client, floating_clients);
153 if (client->workspace->fullscreen_client == client)
154 client->workspace->fullscreen_client = NULL;
156 /* Insert into destination focus stack and list of floating clients */
157 client->workspace = new_workspace;
158 SLIST_INSERT_HEAD(&(client->workspace->focus_stack), client, focus_clients);
159 TAILQ_INSERT_TAIL(&(client->workspace->floating_clients), client, floating_clients);
160 if (client->fullscreen)
161 client->workspace->fullscreen_client = client;
165 * Called whenever the user clicks on a border (not the titlebar!) of a floating window.
166 * Determines on which border the user clicked and launches the drag_pointer function
167 * with the resize_callback.
170 int floating_border_click(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
172 LOG("floating border click\n");
176 void resize_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
179 int new_width = old_rect->width + (new_x - event->root_x);
180 if ((new_width < 0) ||
181 (new_width < 50 && client->rect.width >= new_width))
183 client->rect.width = new_width;
187 case BORDER_BOTTOM: {
188 int new_height = old_rect->height + (new_y - event->root_y);
189 if ((new_height < 0) ||
190 (new_height < 20 && client->rect.height >= new_height))
192 client->rect.height = old_rect->height + (new_y - event->root_y);
197 int new_height = old_rect->height + (event->root_y - new_y);
198 if ((new_height < 0) ||
199 (new_height < 20 && client->rect.height >= new_height))
202 client->rect.y = old_rect->y + (new_y - event->root_y);
203 client->rect.height = new_height;
208 int new_width = old_rect->width + (event->root_x - new_x);
209 if ((new_width < 0) ||
210 (new_width < 50 && client->rect.width >= new_width))
212 client->rect.x = old_rect->x + (new_x - event->root_x);
213 client->rect.width = new_width;
218 /* Push the new position/size to X11 */
219 reposition_client(conn, client);
220 resize_client(conn, client);
224 if (event->event_y < 2)
226 else if (event->event_y >= (client->rect.height - 2))
227 border = BORDER_BOTTOM;
228 else if (event->event_x <= 2)
229 border = BORDER_LEFT;
230 else if (event->event_x >= (client->rect.width - 2))
231 border = BORDER_RIGHT;
233 LOG("Not on any border, not doing anything.\n");
237 LOG("border = %d\n", border);
239 drag_pointer(conn, client, event, XCB_NONE, border, resize_callback);
246 * Called when the user clicked on the titlebar of a floating window.
247 * Calls the drag_pointer function with the drag_window callback
250 void floating_drag_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
251 LOG("floating_drag_window\n");
253 void drag_window_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
254 /* Reposition the client correctly while moving */
255 client->rect.x = old_rect->x + (new_x - event->root_x);
256 client->rect.y = old_rect->y + (new_y - event->root_y);
257 reposition_client(conn, client);
258 /* Because reposition_client does not send a faked configure event (only resize does),
259 * we need to initiate that on our own */
260 fake_absolute_configure_notify(conn, client);
261 /* fake_absolute_configure_notify flushes */
264 drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback);
268 * Called when the user right-clicked on the titlebar of a floating window to
270 * Calls the drag_pointer function with the resize_window callback
273 void floating_resize_window(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event) {
274 LOG("floating_resize_window\n");
276 void resize_window_callback(Rect *old_rect, uint32_t new_x, uint32_t new_y) {
277 int32_t new_width = old_rect->width + (new_x - event->root_x);
278 int32_t new_height = old_rect->height + (new_y - event->root_y);
280 /* Obey minimum window size and reposition the client */
282 client->rect.width = new_width;
284 if (new_height >= 20)
285 client->rect.height = new_height;
287 /* resize_client flushes */
288 resize_client(conn, client);
291 drag_pointer(conn, client, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback);
296 * This function grabs your pointer and lets you drag stuff around (borders).
297 * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
298 * and the given callback will be called with the parameters specified (client,
299 * border on which the click originally was), the original rect of the client,
300 * the event and the new coordinates (x, y).
303 void drag_pointer(xcb_connection_t *conn, Client *client, xcb_button_press_event_t *event,
304 xcb_window_t confine_to, border_t border, callback_t callback) {
305 xcb_window_t root = xcb_setup_roots_iterator(xcb_get_setup(conn)).data->root;
306 uint32_t new_x, new_y;
309 memcpy(&old_rect, &(client->rect), sizeof(Rect));
311 /* Grab the pointer */
312 /* TODO: returncode */
313 xcb_grab_pointer(conn,
314 false, /* get all pointer events specified by the following mask */
315 root, /* grab the root window */
316 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
317 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
318 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
319 confine_to, /* confine_to = in which window should the cursor stay */
320 XCB_NONE, /* don’t display a special cursor */
323 /* Go into our own event loop */
326 xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
327 /* I’ve always wanted to have my own eventhandler… */
328 while ((inside_event = xcb_wait_for_event(conn))) {
329 /* We now handle all events we can get using xcb_poll_for_event */
331 /* Same as get_event_handler in xcb */
332 int nr = inside_event->response_type;
334 /* An error occured */
335 handle_event(NULL, conn, inside_event);
340 nr &= XCB_EVENT_RESPONSE_TYPE_MASK;
344 case XCB_BUTTON_RELEASE:
347 case XCB_MOTION_NOTIFY:
348 /* motion_notify events are saved for later */
349 FREE(last_motion_notify);
350 last_motion_notify = inside_event;
353 case XCB_UNMAP_NOTIFY:
354 LOG("Unmap-notify, aborting\n");
355 xcb_event_handle(&evenths, inside_event);
359 LOG("Passing to original handler\n");
360 /* Use original handler */
361 xcb_event_handle(&evenths, inside_event);
364 if (last_motion_notify != inside_event)
366 } while ((inside_event = xcb_poll_for_event(conn)) != NULL);
368 if (last_motion_notify == NULL)
371 new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
372 new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
374 callback(&old_rect, new_x, new_y);
375 FREE(last_motion_notify);
378 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
383 * Changes focus in the given direction for floating clients.
385 * Changing to the left/right means going to the previous/next floating client,
386 * changing to top/bottom means cycling through the Z-index.
389 void floating_focus_direction(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
390 LOG("floating focus\n");
392 if (direction == D_LEFT || direction == D_RIGHT) {
393 /* Go to the next/previous floating client */
396 while ((client = (direction == D_LEFT ? TAILQ_PREV(currently_focused, floating_clients_head, floating_clients) :
397 TAILQ_NEXT(currently_focused, floating_clients))) !=
398 TAILQ_END(&(currently_focused->workspace->floating_clients))) {
399 if (!client->floating)
401 set_focus(conn, client, true);
408 * Moves the client 10px to the specified direction.
411 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
412 LOG("floating move\n");
414 Rect destination = currently_focused->rect;
415 Rect *screen = &(currently_focused->workspace->screen->rect);
430 /* to make static analyzers happy */
435 /* Prevent windows from vanishing completely */
436 if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
437 (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
438 (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
439 (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
440 DLOG("boundary check failed, not moving\n");
444 currently_focused->rect = destination;
445 reposition_client(conn, currently_focused);
447 /* Because reposition_client does not send a faked configure event (only resize does),
448 * we need to initiate that on our own */
449 fake_absolute_configure_notify(conn, currently_focused);
450 /* fake_absolute_configure_notify flushes */
454 * Hides all floating clients (or show them if they are currently hidden) on
455 * the specified workspace.
458 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
461 workspace->floating_hidden = !workspace->floating_hidden;
462 LOG("floating_hidden is now: %d\n", workspace->floating_hidden);
463 TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
464 if (workspace->floating_hidden)
465 client_unmap(conn, client);
466 else client_map(conn, client);
469 /* If we just unmapped all floating windows we should ensure that the focus
470 * is set correctly, that ist, to the first non-floating client in stack */
471 if (workspace->floating_hidden)
472 SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
473 if (client_is_floating(client))
475 set_focus(conn, client, true);