2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009-2011 Michael Stapelberg and contributors (see also: LICENSE)
7 * floating.c: Floating windows.
12 extern xcb_connection_t *conn;
14 void floating_enable(Con *con, bool automatic) {
15 bool set_focus = (con == focused);
17 if (con->parent && con->parent->type == CT_DOCKAREA) {
18 LOG("Container is a dock window, not enabling floating mode.\n");
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 if (con_num_children(con) == 0) {
34 LOG("Workspace is empty, aborting\n");
37 /* TODO: refactor this with src/con.c:con_set_layout */
38 Con *new = con_new(NULL, NULL);
40 new->orientation = con->orientation;
42 /* since the new container will be set into floating mode directly
43 * afterwards, we need to copy the workspace rect. */
44 memcpy(&(new->rect), &(con->rect), sizeof(Rect));
46 Con *old_focused = TAILQ_FIRST(&(con->focus_head));
47 if (old_focused == TAILQ_END(&(con->focus_head)))
50 /* 4: move the existing cons of this workspace below the new con */
51 DLOG("Moving cons\n");
53 while (!TAILQ_EMPTY(&(con->nodes_head))) {
54 child = TAILQ_FIRST(&(con->nodes_head));
56 con_attach(child, new, true);
59 /* 4: attach the new split container to the workspace */
60 DLOG("Attaching new split to ws\n");
61 con_attach(new, con, false);
64 con_focus(old_focused);
70 /* 1: detach the container from its parent */
71 /* TODO: refactor this with tree_close() */
72 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
73 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
75 con_fix_percent(con->parent);
77 /* 2: create a new container to render the decoration on, add
78 * it as a floating window to the workspace */
79 Con *nc = con_new(NULL, NULL);
80 /* we need to set the parent afterwards instead of passing it as an
81 * argument to con_new() because nc would be inserted into the tiling layer
83 Con *ws = con_get_workspace(con);
85 nc->orientation = NO_ORIENTATION;
86 nc->type = CT_FLOATING_CON;
87 /* We insert nc already, even though its rect is not yet calculated. This
88 * is necessary because otherwise the workspace might be empty (and get
89 * closed in tree_close()) even though it’s not. */
90 TAILQ_INSERT_TAIL(&(ws->floating_head), nc, floating_windows);
91 TAILQ_INSERT_TAIL(&(ws->focus_head), nc, focused);
93 /* check if the parent container is empty and close it if so */
94 if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) &&
95 con_num_children(con->parent) == 0) {
96 DLOG("Old container empty after setting this child to floating, closing\n");
97 tree_close(con->parent, DONT_KILL_WINDOW, false, false);
101 sasprintf(&name, "[i3 con] floatingcon around %p", con);
102 x_set_name(nc, name);
105 /* find the height for the decorations */
106 int deco_height = config.font.height + 5;
108 DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height);
109 DLOG("Geometry = (%d, %d) with %d x %d\n", con->geometry.x, con->geometry.y, con->geometry.width, con->geometry.height);
110 Rect zero = { 0, 0, 0, 0 };
111 nc->rect = con->geometry;
112 /* If the geometry was not set (split containers), we need to determine a
113 * sensible one by combining the geometry of all children */
114 if (memcmp(&(nc->rect), &zero, sizeof(Rect)) == 0) {
115 DLOG("Geometry not set, combining children\n");
117 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
118 DLOG("child geometry: %d x %d\n", child->geometry.width, child->geometry.height);
119 nc->rect.width += child->geometry.width;
120 nc->rect.height = max(nc->rect.height, child->geometry.height);
123 /* Raise the width/height to at least 75x50 (minimum size for windows) */
124 nc->rect.width = max(nc->rect.width, 75);
125 nc->rect.height = max(nc->rect.height, 50);
126 /* add pixels for the decoration */
127 /* TODO: don’t add them when the user automatically puts new windows into
128 * 1pixel/borderless mode */
129 nc->rect.height += deco_height + 2;
132 /* Honor the X11 border */
133 nc->rect.height += con->border_width * 2;
134 nc->rect.width += con->border_width * 2;
136 /* Some clients (like GIMP’s color picker window) get mapped
137 * to (0, 0), so we push them to a reasonable position
138 * (centered over their leader) */
139 if (nc->rect.x == 0 && nc->rect.y == 0) {
141 if (con->window && con->window->leader != XCB_NONE &&
142 (leader = con_by_window_id(con->window->leader)) != NULL) {
143 DLOG("Centering above leader\n");
144 nc->rect.x = leader->rect.x + (leader->rect.width / 2) - (nc->rect.width / 2);
145 nc->rect.y = leader->rect.y + (leader->rect.height / 2) - (nc->rect.height / 2);
147 /* center the window on workspace as fallback */
148 nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
149 nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
153 /* Sanity check: Are the coordinates on the appropriate output? If not, we
154 * need to change them */
155 Output *current_output = get_output_containing(nc->rect.x, nc->rect.y);
156 Con *correct_output = con_get_output(ws);
157 if (!current_output || current_output->con != correct_output) {
158 DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n",
159 nc->rect.x, nc->rect.y);
160 /* Take the relative coordinates of the current output, then add them
161 * to the coordinate space of the correct output */
162 uint32_t rel_x = (nc->rect.x - (current_output ? current_output->con->rect.x : 0));
163 uint32_t rel_y = (nc->rect.y - (current_output ? current_output->con->rect.y : 0));
164 nc->rect.x = correct_output->rect.x + rel_x;
165 nc->rect.y = correct_output->rect.y + rel_y;
168 DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
170 /* 3: attach the child to the new parent container */
173 con->floating = FLOATING_USER_ON;
175 /* 4: set the border style as specified with new_float */
177 con->border_style = config.default_floating_border;
179 /* 5: Subtract the deco_height in order to make the floating window appear
180 * at precisely the position it specified in its original geometry (which
181 * is what applications might remember). */
182 deco_height = (con->border_style == BS_NORMAL ? config.font.height + 5 : 0);
183 nc->rect.y -= deco_height;
185 DLOG("Corrected y = %d (deco_height = %d)\n", nc->rect.y, deco_height);
187 TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
188 TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
190 /* render the cons to get initial window_rect correct */
191 render_con(nc, false);
192 render_con(con, false);
197 /* Check if we need to re-assign it to a different workspace because of its
198 * coordinates and exit if that was done successfully. */
199 if (floating_maybe_reassign_ws(nc))
202 /* Sanitize coordinates: Check if they are on any output */
203 if (get_output_containing(nc->rect.x, nc->rect.y) != NULL)
206 ELOG("No output found at destination coordinates, centering floating window on current ws\n");
207 nc->rect.x = ws->rect.x + (ws->rect.width / 2) - (nc->rect.width / 2);
208 nc->rect.y = ws->rect.y + (ws->rect.height / 2) - (nc->rect.height / 2);
211 void floating_disable(Con *con, bool automatic) {
212 if (!con_is_floating(con)) {
213 LOG("Container isn't floating, not doing anything.\n");
217 Con *ws = con_get_workspace(con);
219 /* 1: detach from parent container */
220 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
221 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
223 /* 2: kill parent container */
224 TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
225 TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
226 tree_close(con->parent, DONT_KILL_WINDOW, false, false);
228 /* 3: re-attach to the parent of the currently focused con on the workspace
229 * this floating con was on */
230 Con *focused = con_descend_tiling_focused(ws);
232 /* if there is no other container on this workspace, focused will be the
233 * workspace itself */
234 if (focused->type == CT_WORKSPACE)
235 con->parent = focused;
236 else con->parent = focused->parent;
238 /* con_fix_percent will adjust the percent value */
241 TAILQ_INSERT_TAIL(&(con->parent->nodes_head), con, nodes);
242 TAILQ_INSERT_TAIL(&(con->parent->focus_head), con, focused);
244 con->floating = FLOATING_USER_OFF;
246 con_fix_percent(con->parent);
247 // TODO: don’t influence focus handling when Con was not focused before.
252 * Toggles floating mode for the given container.
254 * If the automatic flag is set to true, this was an automatic update by a change of the
255 * window class from the application which can be overwritten by the user.
258 void toggle_floating_mode(Con *con, bool automatic) {
259 /* see if the client is already floating */
260 if (con_is_floating(con)) {
261 LOG("already floating, re-setting to tiling\n");
263 floating_disable(con, automatic);
267 floating_enable(con, automatic);
271 * Raises the given container in the list of floating containers
274 void floating_raise_con(Con *con) {
275 DLOG("Raising floating con %p / %s\n", con, con->name);
276 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
277 TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
281 * Checks if con’s coordinates are within its workspace and re-assigns it to
282 * the actual workspace if not.
285 bool floating_maybe_reassign_ws(Con *con) {
286 Output *output = get_output_containing(
287 con->rect.x + (con->rect.width / 2),
288 con->rect.y + (con->rect.height / 2));
291 ELOG("No output found at destination coordinates?\n");
295 if (con_get_output(con) == output->con) {
296 DLOG("still the same ws\n");
300 DLOG("Need to re-assign!\n");
302 Con *content = output_get_content(output->con);
303 Con *ws = TAILQ_FIRST(&(content->focus_head));
304 DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
305 con_move_to_workspace(con, ws, false, true);
306 con_focus(con_descend_focused(con));
310 DRAGGING_CB(drag_window_callback) {
311 const struct xcb_button_press_event_t *event = extra;
313 /* Reposition the client correctly while moving */
314 con->rect.x = old_rect->x + (new_x - event->root_x);
315 con->rect.y = old_rect->y + (new_y - event->root_y);
317 render_con(con, false);
321 /* Check if we cross workspace boundaries while moving */
322 if (!floating_maybe_reassign_ws(con))
328 * Called when the user clicked on the titlebar of a floating window.
329 * Calls the drag_pointer function with the drag_window callback
332 void floating_drag_window(Con *con, const xcb_button_press_event_t *event) {
333 DLOG("floating_drag_window\n");
335 /* Push changes before dragging, so that the window gets raised now and not
336 * after the user releases the mouse button */
339 /* Drag the window */
340 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, drag_window_callback, event);
345 * This is an ugly data structure which we need because there is no standard
346 * way of having nested functions (only available as a gcc extension at the
347 * moment, clang doesn’t support it) or blocks (only available as a clang
348 * extension and only on Mac OS X systems at the moment).
351 struct resize_window_callback_params {
352 const border_t corner;
353 const bool proportional;
354 const xcb_button_press_event_t *event;
357 DRAGGING_CB(resize_window_callback) {
358 const struct resize_window_callback_params *params = extra;
359 const xcb_button_press_event_t *event = params->event;
360 border_t corner = params->corner;
362 int32_t dest_x = con->rect.x;
363 int32_t dest_y = con->rect.y;
365 uint32_t dest_height;
367 double ratio = (double) old_rect->width / old_rect->height;
369 /* First guess: We resize by exactly the amount the mouse moved,
370 * taking into account in which corner the client was grabbed */
371 if (corner & BORDER_LEFT)
372 dest_width = old_rect->width - (new_x - event->root_x);
373 else dest_width = old_rect->width + (new_x - event->root_x);
375 if (corner & BORDER_TOP)
376 dest_height = old_rect->height - (new_y - event->root_y);
377 else dest_height = old_rect->height + (new_y - event->root_y);
379 /* Obey minimum window size */
380 Rect minimum = con_minimum_size(con);
381 dest_width = max(dest_width, minimum.width);
382 dest_height = max(dest_height, minimum.height);
384 /* User wants to keep proportions, so we may have to adjust our values */
385 if (params->proportional) {
386 dest_width = max(dest_width, (int) (dest_height * ratio));
387 dest_height = max(dest_height, (int) (dest_width / ratio));
390 /* If not the lower right corner is grabbed, we must also reposition
391 * the client by exactly the amount we resized it */
392 if (corner & BORDER_LEFT)
393 dest_x = old_rect->x + (old_rect->width - dest_width);
395 if (corner & BORDER_TOP)
396 dest_y = old_rect->y + (old_rect->height - dest_height);
398 con->rect = (Rect) { dest_x, dest_y, dest_width, dest_height };
400 /* TODO: don’t re-render the whole tree just because we change
401 * coordinates of a floating window */
403 x_push_changes(croot);
407 * Called when the user clicked on a floating window while holding the
408 * floating_modifier and the right mouse button.
409 * Calls the drag_pointer function with the resize_window callback
412 void floating_resize_window(Con *con, const bool proportional,
413 const xcb_button_press_event_t *event) {
414 DLOG("floating_resize_window\n");
416 /* corner saves the nearest corner to the original click. It contains
417 * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
420 if (event->event_x <= (con->rect.width / 2))
421 corner |= BORDER_LEFT;
422 else corner |= BORDER_RIGHT;
424 if (event->event_y <= (con->rect.height / 2))
425 corner |= BORDER_TOP;
426 else corner |= BORDER_BOTTOM;
428 struct resize_window_callback_params params = { corner, proportional, event };
430 drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, resize_window_callback, ¶ms);
434 * This function grabs your pointer and lets you drag stuff around (borders).
435 * Every time you move your mouse, an XCB_MOTION_NOTIFY event will be received
436 * and the given callback will be called with the parameters specified (client,
437 * border on which the click originally was), the original rect of the client,
438 * the event and the new coordinates (x, y).
441 void drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_window_t
442 confine_to, border_t border, callback_t callback, const void *extra)
444 uint32_t new_x, new_y;
447 memcpy(&old_rect, &(con->rect), sizeof(Rect));
449 /* Grab the pointer */
450 xcb_grab_pointer_cookie_t cookie;
451 xcb_grab_pointer_reply_t *reply;
452 cookie = xcb_grab_pointer(conn,
453 false, /* get all pointer events specified by the following mask */
454 root, /* grab the root window */
455 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
456 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
457 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
458 confine_to, /* confine_to = in which window should the cursor stay */
459 XCB_NONE, /* don’t display a special cursor */
462 if ((reply = xcb_grab_pointer_reply(conn, cookie, NULL)) == NULL) {
463 ELOG("Could not grab pointer\n");
469 /* Go into our own event loop */
472 xcb_generic_event_t *inside_event, *last_motion_notify = NULL;
473 bool loop_done = false;
474 /* I’ve always wanted to have my own eventhandler… */
475 while (!loop_done && (inside_event = xcb_wait_for_event(conn))) {
476 /* We now handle all events we can get using xcb_poll_for_event */
478 /* skip x11 errors */
479 if (inside_event->response_type == 0) {
483 /* Strip off the highest bit (set if the event is generated) */
484 int type = (inside_event->response_type & 0x7F);
487 case XCB_BUTTON_RELEASE:
491 case XCB_MOTION_NOTIFY:
492 /* motion_notify events are saved for later */
493 FREE(last_motion_notify);
494 last_motion_notify = inside_event;
497 case XCB_UNMAP_NOTIFY:
499 case XCB_KEY_RELEASE:
500 DLOG("Unmap-notify, aborting\n");
501 handle_event(type, inside_event);
506 DLOG("Passing to original handler\n");
507 /* Use original handler */
508 handle_event(type, inside_event);
511 if (last_motion_notify != inside_event)
513 } while ((inside_event = xcb_poll_for_event(conn)) != NULL);
515 if (last_motion_notify == NULL)
518 new_x = ((xcb_motion_notify_event_t*)last_motion_notify)->root_x;
519 new_y = ((xcb_motion_notify_event_t*)last_motion_notify)->root_y;
521 callback(con, &old_rect, new_x, new_y, extra);
522 FREE(last_motion_notify);
525 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
530 * Repositions the CT_FLOATING_CON to have the coordinates specified by
531 * newrect, but only if the coordinates are not out-of-bounds. Also reassigns
532 * the floating con to a different workspace if this move was across different
536 void floating_reposition(Con *con, Rect newrect) {
537 /* Sanity check: Are the new coordinates on any output? If not, we
538 * ignore that request. */
539 Output *output = get_output_containing(
540 newrect.x + (newrect.width / 2),
541 newrect.y + (newrect.height / 2));
544 ELOG("No output found at destination coordinates. Not repositioning.\n");
550 floating_maybe_reassign_ws(con);
555 * Fixes the coordinates of the floating window whenever the window gets
556 * reassigned to a different output (or when the output’s rect changes).
559 void floating_fix_coordinates(Con *con, Rect *old_rect, Rect *new_rect) {
560 DLOG("Fixing coordinates of floating window %p\n", con);
561 /* First we get the x/y coordinates relative to the x/y coordinates
562 * of the output on which the window is on */
563 uint32_t rel_x = (con->rect.x - old_rect->x);
564 uint32_t rel_y = (con->rect.y - old_rect->y);
565 /* Then we calculate a fraction, for example 0.63 for a window
566 * which is at y = 1212 of a 1920 px high output */
567 double fraction_x = ((double)rel_x / old_rect->width);
568 double fraction_y = ((double)rel_y / old_rect->height);
569 DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n",
570 rel_x, rel_y, fraction_x, fraction_y, old_rect->width, old_rect->height);
571 con->rect.x = new_rect->x + (fraction_x * new_rect->width);
572 con->rect.y = new_rect->y + (fraction_y * new_rect->height);
573 DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y);
578 * Moves the client 10px to the specified direction.
581 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
582 DLOG("floating move\n");
584 Rect destination = currently_focused->rect;
585 Rect *screen = &(currently_focused->workspace->output->rect);
600 /* to make static analyzers happy */
605 /* Prevent windows from vanishing completely */
606 if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
607 (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
608 (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
609 (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
610 DLOG("boundary check failed, not moving\n");
614 currently_focused->rect = destination;
615 reposition_client(conn, currently_focused);
617 /* Because reposition_client does not send a faked configure event (only resize does),
618 * we need to initiate that on our own */
619 fake_absolute_configure_notify(conn, currently_focused);
620 /* fake_absolute_configure_notify flushes */
624 * Hides all floating clients (or show them if they are currently hidden) on
625 * the specified workspace.
628 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
631 workspace->floating_hidden = !workspace->floating_hidden;
632 DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
633 TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
634 if (workspace->floating_hidden)
635 client_unmap(conn, client);
636 else client_map(conn, client);
639 /* If we just unmapped all floating windows we should ensure that the focus
640 * is set correctly, that ist, to the first non-floating client in stack */
641 if (workspace->floating_hidden)
642 SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
643 if (client_is_floating(client))
645 set_focus(conn, client, true);