2 #define I3__FILE__ "floating.c"
4 * vim:ts=4:sw=4:expandtab
6 * i3 - an improved dynamic tiling window manager
7 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
9 * floating.c: Floating windows.
14 extern xcb_connection_t *conn;
17 * Calculates sum of heights and sum of widths of all currently active outputs
20 static Rect total_outputs_dimensions(void) {
21 if (TAILQ_EMPTY(&outputs))
22 return (Rect){0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
25 /* Use Rect to encapsulate dimensions, ignoring x/y */
26 Rect outputs_dimensions = {0, 0, 0, 0};
27 TAILQ_FOREACH(output, &outputs, outputs) {
28 outputs_dimensions.height += output->rect.height;
29 outputs_dimensions.width += output->rect.width;
31 return outputs_dimensions;
35 * Called when a floating window is created or resized.
36 * This function resizes the window if its size is higher or lower than the
37 * configured maximum/minimum size, respectively.
40 void floating_check_size(Con *floating_con) {
41 /* Define reasonable minimal and maximal sizes for floating windows */
42 const int floating_sane_min_height = 50;
43 const int floating_sane_min_width = 75;
44 Rect floating_sane_max_dimensions;
45 Con *focused_con = con_descend_focused(floating_con);
47 /* obey size increments */
48 if (focused_con->window != NULL && (focused_con->window->height_increment || focused_con->window->width_increment)) {
49 Rect border_rect = con_border_style_rect(focused_con);
51 /* We have to do the opposite calculations that render_con() do
52 * to get the exact size we want. */
53 border_rect.width = -border_rect.width;
54 border_rect.width += 2 * focused_con->border_width;
55 border_rect.height = -border_rect.height;
56 border_rect.height += 2 * focused_con->border_width;
57 if (con_border_style(focused_con) == BS_NORMAL)
58 border_rect.height += render_deco_height();
60 if (focused_con->window->height_increment &&
61 floating_con->rect.height >= focused_con->window->base_height + border_rect.height) {
62 floating_con->rect.height -= focused_con->window->base_height + border_rect.height;
63 floating_con->rect.height -= floating_con->rect.height % focused_con->window->height_increment;
64 floating_con->rect.height += focused_con->window->base_height + border_rect.height;
67 if (focused_con->window->width_increment &&
68 floating_con->rect.width >= focused_con->window->base_width + border_rect.width) {
69 floating_con->rect.width -= focused_con->window->base_width + border_rect.width;
70 floating_con->rect.width -= floating_con->rect.width % focused_con->window->width_increment;
71 floating_con->rect.width += focused_con->window->base_width + border_rect.width;
75 /* Unless user requests otherwise (-1), ensure width/height do not exceed
76 * configured maxima or, if unconfigured, limit to combined width of all
78 if (config.floating_minimum_height != -1) {
79 if (config.floating_minimum_height == 0)
80 floating_con->rect.height = max(floating_con->rect.height, floating_sane_min_height);
82 floating_con->rect.height = max(floating_con->rect.height, config.floating_minimum_height);
84 if (config.floating_minimum_width != -1) {
85 if (config.floating_minimum_width == 0)
86 floating_con->rect.width = max(floating_con->rect.width, floating_sane_min_width);
88 floating_con->rect.width = max(floating_con->rect.width, config.floating_minimum_width);
91 /* Unless user requests otherwise (-1), raise the width/height to
92 * reasonable minimum dimensions */
93 floating_sane_max_dimensions = total_outputs_dimensions();
94 if (config.floating_maximum_height != -1) {
95 if (config.floating_maximum_height == 0)
96 floating_con->rect.height = min(floating_con->rect.height, floating_sane_max_dimensions.height);
98 floating_con->rect.height = min(floating_con->rect.height, config.floating_maximum_height);
100 if (config.floating_maximum_width != -1) {
101 if (config.floating_maximum_width == 0)
102 floating_con->rect.width = min(floating_con->rect.width, floating_sane_max_dimensions.width);
104 floating_con->rect.width = min(floating_con->rect.width, config.floating_maximum_width);
108 void floating_enable(Con *con, bool automatic) {
109 bool set_focus = (con == focused);
111 if (con->parent && con->parent->type == CT_DOCKAREA) {
112 LOG("Container is a dock window, not enabling floating mode.\n");
116 if (con_is_floating(con)) {
117 LOG("Container is already in floating mode, not doing anything.\n");
121 /* 1: If the container is a workspace container, we need to create a new
122 * split-container with the same layout and make that one floating. We
123 * cannot touch the workspace container itself because floating containers
124 * are children of the workspace. */
125 if (con->type == CT_WORKSPACE) {
126 LOG("This is a workspace, creating new container around content\n");
127 if (con_num_children(con) == 0) {
128 LOG("Workspace is empty, aborting\n");
131 /* TODO: refactor this with src/con.c:con_set_layout */
132 Con *new = con_new(NULL, NULL);
134 new->layout = con->layout;
136 /* since the new container will be set into floating mode directly
137 * afterwards, we need to copy the workspace rect. */
138 memcpy(&(new->rect), &(con->rect), sizeof(Rect));
140 Con *old_focused = TAILQ_FIRST(&(con->focus_head));
141 if (old_focused == TAILQ_END(&(con->focus_head)))
144 /* 4: move the existing cons of this workspace below the new con */
145 DLOG("Moving cons\n");
147 while (!TAILQ_EMPTY(&(con->nodes_head))) {
148 child = TAILQ_FIRST(&(con->nodes_head));
150 con_attach(child, new, true);
153 /* 4: attach the new split container to the workspace */
154 DLOG("Attaching new split to ws\n");
155 con_attach(new, con, false);
158 con_focus(old_focused);
164 /* 1: detach the container from its parent */
165 /* TODO: refactor this with tree_close() */
166 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
167 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
169 con_fix_percent(con->parent);
171 /* 2: create a new container to render the decoration on, add
172 * it as a floating window to the workspace */
173 Con *nc = con_new(NULL, NULL);
174 /* we need to set the parent afterwards instead of passing it as an
175 * argument to con_new() because nc would be inserted into the tiling layer
177 Con *ws = con_get_workspace(con);
179 nc->type = CT_FLOATING_CON;
180 nc->layout = L_SPLITH;
181 /* We insert nc already, even though its rect is not yet calculated. This
182 * is necessary because otherwise the workspace might be empty (and get
183 * closed in tree_close()) even though it’s not. */
184 TAILQ_INSERT_TAIL(&(ws->floating_head), nc, floating_windows);
185 TAILQ_INSERT_TAIL(&(ws->focus_head), nc, focused);
187 /* check if the parent container is empty and close it if so */
188 if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) &&
189 con_num_children(con->parent) == 0) {
190 DLOG("Old container empty after setting this child to floating, closing\n");
191 tree_close(con->parent, DONT_KILL_WINDOW, false, false);
195 sasprintf(&name, "[i3 con] floatingcon around %p", con);
196 x_set_name(nc, name);
199 /* find the height for the decorations */
200 int deco_height = render_deco_height();
202 DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height);
203 DLOG("Geometry = (%d, %d) with %d x %d\n", con->geometry.x, con->geometry.y, con->geometry.width, con->geometry.height);
204 Rect zero = {0, 0, 0, 0};
205 nc->rect = con->geometry;
206 /* If the geometry was not set (split containers), we need to determine a
207 * sensible one by combining the geometry of all children */
208 if (memcmp(&(nc->rect), &zero, sizeof(Rect)) == 0) {
209 DLOG("Geometry not set, combining children\n");
211 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
212 DLOG("child geometry: %d x %d\n", child->geometry.width, child->geometry.height);
213 nc->rect.width += child->geometry.width;
214 nc->rect.height = max(nc->rect.height, child->geometry.height);
218 floating_check_size(nc);
220 /* 3: attach the child to the new parent container. We need to do this
221 * because con_border_style_rect() needs to access con->parent. */
224 con->floating = FLOATING_USER_ON;
226 /* 4: set the border style as specified with new_float */
228 con->border_style = config.default_floating_border;
230 /* Add pixels for the decoration. */
231 Rect border_style_rect = con_border_style_rect(con);
233 nc->rect.height -= border_style_rect.height;
234 nc->rect.width -= border_style_rect.width;
236 /* Add some more pixels for the title bar */
237 if (con_border_style(con) == BS_NORMAL)
238 nc->rect.height += deco_height;
240 /* Honor the X11 border */
241 nc->rect.height += con->border_width * 2;
242 nc->rect.width += con->border_width * 2;
244 /* Some clients (like GIMP’s color picker window) get mapped
245 * to (0, 0), so we push them to a reasonable position
246 * (centered over their leader) */
247 if (nc->rect.x == 0 && nc->rect.y == 0) {
249 if (con->window && con->window->leader != XCB_NONE &&
250 (leader = con_by_window_id(con->window->leader)) != NULL) {
251 DLOG("Centering above leader\n");
252 floating_center(nc, leader->rect);
254 /* center the window on workspace as fallback */
255 floating_center(nc, ws->rect);
259 /* Sanity check: Are the coordinates on the appropriate output? If not, we
260 * need to change them */
261 Output *current_output = get_output_containing(nc->rect.x +
262 (nc->rect.width / 2),
263 nc->rect.y + (nc->rect.height / 2));
265 Con *correct_output = con_get_output(ws);
266 if (!current_output || current_output->con != correct_output) {
267 DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n",
268 nc->rect.x, nc->rect.y);
270 /* If moving from one output to another, keep the relative position
271 * consistent (e.g. a centered dialog will remain centered). */
273 floating_fix_coordinates(nc, ¤t_output->con->rect, &correct_output->rect);
275 nc->rect.x = correct_output->rect.x;
276 nc->rect.y = correct_output->rect.y;
280 DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
282 /* 5: Subtract the deco_height in order to make the floating window appear
283 * at precisely the position it specified in its original geometry (which
284 * is what applications might remember). */
285 deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
286 nc->rect.y -= deco_height;
288 DLOG("Corrected y = %d (deco_height = %d)\n", nc->rect.y, deco_height);
290 TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
291 TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
293 /* render the cons to get initial window_rect correct */
294 render_con(nc, false);
295 render_con(con, false);
300 /* Check if we need to re-assign it to a different workspace because of its
301 * coordinates and exit if that was done successfully. */
302 if (floating_maybe_reassign_ws(nc)) {
303 ipc_send_window_event("floating", con);
307 /* Sanitize coordinates: Check if they are on any output */
308 if (get_output_containing(nc->rect.x, nc->rect.y) != NULL) {
309 ipc_send_window_event("floating", con);
313 ELOG("No output found at destination coordinates, centering floating window on current ws\n");
314 floating_center(nc, ws->rect);
316 ipc_send_window_event("floating", con);
319 void floating_disable(Con *con, bool automatic) {
320 if (!con_is_floating(con)) {
321 LOG("Container isn't floating, not doing anything.\n");
325 const bool set_focus = (con == focused);
327 Con *ws = con_get_workspace(con);
329 /* 1: detach from parent container */
330 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
331 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
333 /* 2: kill parent container */
334 TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
335 TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
336 tree_close(con->parent, DONT_KILL_WINDOW, true, false);
338 /* 3: re-attach to the parent of the currently focused con on the workspace
339 * this floating con was on */
340 Con *focused = con_descend_tiling_focused(ws);
342 /* if there is no other container on this workspace, focused will be the
343 * workspace itself */
344 if (focused->type == CT_WORKSPACE)
345 con->parent = focused;
347 con->parent = focused->parent;
349 /* con_fix_percent will adjust the percent value */
352 con->floating = FLOATING_USER_OFF;
354 con_attach(con, con->parent, false);
356 con_fix_percent(con->parent);
361 ipc_send_window_event("floating", con);
365 * Toggles floating mode for the given container.
367 * If the automatic flag is set to true, this was an automatic update by a change of the
368 * window class from the application which can be overwritten by the user.
371 void toggle_floating_mode(Con *con, bool automatic) {
372 /* forbid the command to toggle floating on a CT_FLOATING_CON */
373 if (con->type == CT_FLOATING_CON) {
374 ELOG("Cannot toggle floating mode on con = %p because it is of type CT_FLOATING_CON.\n", con);
378 /* see if the client is already floating */
379 if (con_is_floating(con)) {
380 LOG("already floating, re-setting to tiling\n");
382 floating_disable(con, automatic);
386 floating_enable(con, automatic);
390 * Raises the given container in the list of floating containers
393 void floating_raise_con(Con *con) {
394 DLOG("Raising floating con %p / %s\n", con, con->name);
395 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
396 TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
400 * Checks if con’s coordinates are within its workspace and re-assigns it to
401 * the actual workspace if not.
404 bool floating_maybe_reassign_ws(Con *con) {
405 Output *output = get_output_containing(
406 con->rect.x + (con->rect.width / 2),
407 con->rect.y + (con->rect.height / 2));
410 ELOG("No output found at destination coordinates?\n");
414 if (con_get_output(con) == output->con) {
415 DLOG("still the same ws\n");
419 DLOG("Need to re-assign!\n");
421 Con *content = output_get_content(output->con);
422 Con *ws = TAILQ_FIRST(&(content->focus_head));
423 DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
424 con_move_to_workspace(con, ws, false, true, false);
425 con_focus(con_descend_focused(con));
430 * Centers a floating con above the specified rect.
433 void floating_center(Con *con, Rect rect) {
434 con->rect.x = rect.x + (rect.width / 2) - (con->rect.width / 2);
435 con->rect.y = rect.y + (rect.height / 2) - (con->rect.height / 2);
439 * Moves the given floating con to the current pointer position.
442 void floating_move_to_pointer(Con *con) {
443 assert(con->type == CT_FLOATING_CON);
445 xcb_query_pointer_reply_t *reply = xcb_query_pointer_reply(conn, xcb_query_pointer(conn, root), NULL);
447 ELOG("could not query pointer position, not moving this container\n");
451 Output *output = get_output_containing(reply->root_x, reply->root_y);
452 if (output == NULL) {
453 ELOG("The pointer is not on any output, cannot move the container here.\n");
457 /* Determine where to put the window. */
458 int32_t x = reply->root_x - con->rect.width / 2;
459 int32_t y = reply->root_y - con->rect.height / 2;
462 /* Correct target coordinates to be in-bounds. */
463 x = MAX(x, (int32_t)output->rect.x);
464 y = MAX(y, (int32_t)output->rect.y);
465 if (x + con->rect.width > output->rect.x + output->rect.width)
466 x = output->rect.x + output->rect.width - con->rect.width;
467 if (y + con->rect.height > output->rect.y + output->rect.height)
468 y = output->rect.y + output->rect.height - con->rect.height;
470 /* Update container's coordinates to position it correctly. */
471 floating_reposition(con, (Rect){x, y, con->rect.width, con->rect.height});
474 DRAGGING_CB(drag_window_callback) {
475 const struct xcb_button_press_event_t *event = extra;
477 /* Reposition the client correctly while moving */
478 con->rect.x = old_rect->x + (new_x - event->root_x);
479 con->rect.y = old_rect->y + (new_y - event->root_y);
481 render_con(con, false);
485 /* Check if we cross workspace boundaries while moving */
486 if (!floating_maybe_reassign_ws(con))
488 /* Ensure not to warp the pointer while dragging */
494 * Called when the user clicked on the titlebar of a floating window.
495 * Calls the drag_pointer function with the drag_window callback
498 void floating_drag_window(Con *con, const xcb_button_press_event_t *event) {
499 DLOG("floating_drag_window\n");
501 /* Push changes before dragging, so that the window gets raised now and not
502 * after the user releases the mouse button */
505 /* Store the initial rect in case of user revert/cancel */
506 Rect initial_rect = con->rect;
508 /* Drag the window */
509 drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, XCURSOR_CURSOR_MOVE, drag_window_callback, event);
511 /* If the user cancelled, undo the changes. */
512 if (drag_result == DRAG_REVERT)
513 floating_reposition(con, initial_rect);
515 /* If this is a scratchpad window, don't auto center it from now on. */
516 if (con->scratchpad_state == SCRATCHPAD_FRESH)
517 con->scratchpad_state = SCRATCHPAD_CHANGED;
523 * This is an ugly data structure which we need because there is no standard
524 * way of having nested functions (only available as a gcc extension at the
525 * moment, clang doesn’t support it) or blocks (only available as a clang
526 * extension and only on Mac OS X systems at the moment).
529 struct resize_window_callback_params {
530 const border_t corner;
531 const bool proportional;
532 const xcb_button_press_event_t *event;
535 DRAGGING_CB(resize_window_callback) {
536 const struct resize_window_callback_params *params = extra;
537 const xcb_button_press_event_t *event = params->event;
538 border_t corner = params->corner;
540 int32_t dest_x = con->rect.x;
541 int32_t dest_y = con->rect.y;
543 uint32_t dest_height;
545 double ratio = (double)old_rect->width / old_rect->height;
547 /* First guess: We resize by exactly the amount the mouse moved,
548 * taking into account in which corner the client was grabbed */
549 if (corner & BORDER_LEFT)
550 dest_width = old_rect->width - (new_x - event->root_x);
552 dest_width = old_rect->width + (new_x - event->root_x);
554 if (corner & BORDER_TOP)
555 dest_height = old_rect->height - (new_y - event->root_y);
557 dest_height = old_rect->height + (new_y - event->root_y);
559 /* User wants to keep proportions, so we may have to adjust our values */
560 if (params->proportional) {
561 dest_width = max(dest_width, (int)(dest_height * ratio));
562 dest_height = max(dest_height, (int)(dest_width / ratio));
565 con->rect = (Rect){dest_x, dest_y, dest_width, dest_height};
567 /* Obey window size */
568 floating_check_size(con);
570 /* If not the lower right corner is grabbed, we must also reposition
571 * the client by exactly the amount we resized it */
572 if (corner & BORDER_LEFT)
573 dest_x = old_rect->x + (old_rect->width - con->rect.width);
575 if (corner & BORDER_TOP)
576 dest_y = old_rect->y + (old_rect->height - con->rect.height);
578 con->rect.x = dest_x;
579 con->rect.y = dest_y;
581 /* TODO: don’t re-render the whole tree just because we change
582 * coordinates of a floating window */
584 x_push_changes(croot);
588 * Called when the user clicked on a floating window while holding the
589 * floating_modifier and the right mouse button.
590 * Calls the drag_pointer function with the resize_window callback
593 void floating_resize_window(Con *con, const bool proportional,
594 const xcb_button_press_event_t *event) {
595 DLOG("floating_resize_window\n");
597 /* corner saves the nearest corner to the original click. It contains
598 * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
601 if (event->event_x <= (int16_t)(con->rect.width / 2))
602 corner |= BORDER_LEFT;
604 corner |= BORDER_RIGHT;
607 if (event->event_y <= (int16_t)(con->rect.height / 2)) {
608 corner |= BORDER_TOP;
609 cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_TOP_LEFT_CORNER : XCURSOR_CURSOR_TOP_RIGHT_CORNER;
611 corner |= BORDER_BOTTOM;
612 cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_BOTTOM_LEFT_CORNER : XCURSOR_CURSOR_BOTTOM_RIGHT_CORNER;
615 struct resize_window_callback_params params = {corner, proportional, event};
617 /* get the initial rect in case of revert/cancel */
618 Rect initial_rect = con->rect;
620 drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, cursor, resize_window_callback, ¶ms);
622 /* If the user cancels, undo the resize */
623 if (drag_result == DRAG_REVERT)
624 floating_reposition(con, initial_rect);
626 /* If this is a scratchpad window, don't auto center it from now on. */
627 if (con->scratchpad_state == SCRATCHPAD_FRESH)
628 con->scratchpad_state = SCRATCHPAD_CHANGED;
631 /* As endorsed by “ASSOCIATING CUSTOM DATA WITH A WATCHER” in ev(3) */
635 /* Whether this modal event loop should be exited and with which result. */
636 drag_result_t result;
638 /* The container that is being dragged or resized, or NULL if this is a
639 * drag of the resize handle. */
642 /* The dimensions of con when the loop was started. */
645 /* The callback to invoke after every pointer movement. */
648 /* User data pointer for callback. */
652 static void xcb_drag_check_cb(EV_P_ ev_check *w, int revents) {
653 struct drag_x11_cb *dragloop = (struct drag_x11_cb *)w;
654 xcb_motion_notify_event_t *last_motion_notify = NULL;
655 xcb_generic_event_t *event;
657 while ((event = xcb_poll_for_event(conn)) != NULL) {
658 if (event->response_type == 0) {
659 xcb_generic_error_t *error = (xcb_generic_error_t *)event;
660 DLOG("X11 Error received (probably harmless)! sequence 0x%x, error_code = %d\n",
661 error->sequence, error->error_code);
666 /* Strip off the highest bit (set if the event is generated) */
667 int type = (event->response_type & 0x7F);
670 case XCB_BUTTON_RELEASE:
671 dragloop->result = DRAG_SUCCESS;
675 DLOG("A key was pressed during drag, reverting changes.\n");
676 dragloop->result = DRAG_REVERT;
677 handle_event(type, event);
680 case XCB_UNMAP_NOTIFY: {
681 xcb_unmap_notify_event_t *unmap_event = (xcb_unmap_notify_event_t *)event;
682 Con *con = con_by_window_id(unmap_event->window);
685 DLOG("UnmapNotify for window 0x%08x (container %p)\n", unmap_event->window, con);
687 if (con_get_workspace(con) == con_get_workspace(focused)) {
688 DLOG("UnmapNotify for a managed window on the current workspace, aborting\n");
689 dragloop->result = DRAG_ABORT;
693 handle_event(type, event);
697 case XCB_MOTION_NOTIFY:
698 /* motion_notify events are saved for later */
699 FREE(last_motion_notify);
700 last_motion_notify = (xcb_motion_notify_event_t *)event;
704 DLOG("Passing to original handler\n");
705 handle_event(type, event);
709 if (last_motion_notify != (xcb_motion_notify_event_t *)event)
712 if (dragloop->result != DRAGGING)
716 if (last_motion_notify == NULL)
721 &(dragloop->old_rect),
722 last_motion_notify->root_x,
723 last_motion_notify->root_y,
725 free(last_motion_notify);
729 * This function grabs your pointer and keyboard and lets you drag stuff around
730 * (borders). Every time you move your mouse, an XCB_MOTION_NOTIFY event will
731 * be received and the given callback will be called with the parameters
732 * specified (client, border on which the click originally was), the original
733 * rect of the client, the event and the new coordinates (x, y).
736 drag_result_t drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_window_t
738 border_t border, int cursor, callback_t callback, const void *extra) {
739 xcb_cursor_t xcursor = (cursor && xcursor_supported) ? xcursor_get_cursor(cursor) : XCB_NONE;
741 /* Grab the pointer */
742 xcb_grab_pointer_cookie_t cookie;
743 xcb_grab_pointer_reply_t *reply;
744 xcb_generic_error_t *error;
746 cookie = xcb_grab_pointer(conn,
747 false, /* get all pointer events specified by the following mask */
748 root, /* grab the root window */
749 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
750 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
751 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
752 confine_to, /* confine_to = in which window should the cursor stay */
753 xcursor, /* possibly display a special cursor */
756 if ((reply = xcb_grab_pointer_reply(conn, cookie, &error)) == NULL) {
757 ELOG("Could not grab pointer (error_code = %d)\n", error->error_code);
764 /* Grab the keyboard */
765 xcb_grab_keyboard_cookie_t keyb_cookie;
766 xcb_grab_keyboard_reply_t *keyb_reply;
768 keyb_cookie = xcb_grab_keyboard(conn,
769 false, /* get all keyboard events */
770 root, /* grab the root window */
772 XCB_GRAB_MODE_ASYNC, /* continue processing pointer events as normal */
773 XCB_GRAB_MODE_ASYNC /* keyboard mode */
776 if ((keyb_reply = xcb_grab_keyboard_reply(conn, keyb_cookie, &error)) == NULL) {
777 ELOG("Could not grab keyboard (error_code = %d)\n", error->error_code);
779 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
785 /* Go into our own event loop */
786 struct drag_x11_cb loop = {
789 .callback = callback,
793 loop.old_rect = con->rect;
794 ev_check_init(&loop.check, xcb_drag_check_cb);
795 main_set_x11_cb(false);
796 ev_check_start(main_loop, &loop.check);
798 while (loop.result == DRAGGING)
799 ev_run(main_loop, EVRUN_ONCE);
801 ev_check_stop(main_loop, &loop.check);
802 main_set_x11_cb(true);
804 xcb_ungrab_keyboard(conn, XCB_CURRENT_TIME);
805 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
812 * Repositions the CT_FLOATING_CON to have the coordinates specified by
813 * newrect, but only if the coordinates are not out-of-bounds. Also reassigns
814 * the floating con to a different workspace if this move was across different
818 void floating_reposition(Con *con, Rect newrect) {
819 /* Sanity check: Are the new coordinates on any output? If not, we
820 * ignore that request. */
821 if (!contained_by_output(newrect)) {
822 ELOG("No output found at destination coordinates. Not repositioning.\n");
828 floating_maybe_reassign_ws(con);
830 /* If this is a scratchpad window, don't auto center it from now on. */
831 if (con->scratchpad_state == SCRATCHPAD_FRESH)
832 con->scratchpad_state = SCRATCHPAD_CHANGED;
838 * Sets size of the CT_FLOATING_CON to specified dimensions. Might limit the
839 * actual size with regard to size constraints taken from user settings.
840 * Additionally, the dimensions may be upscaled until they're divisible by the
841 * window's size hints.
844 void floating_resize(Con *floating_con, int x, int y) {
845 DLOG("floating resize to %dx%d px\n", x, y);
846 Rect *rect = &floating_con->rect;
847 Con *focused_con = con_descend_focused(floating_con);
848 if (focused_con->window == NULL) {
849 DLOG("No window is focused. Not resizing.\n");
852 int wi = focused_con->window->width_increment;
853 int hi = focused_con->window->height_increment;
857 rect->width += (wi - 1 - rect->width) % wi;
859 rect->height += (hi - 1 - rect->height) % hi;
861 floating_check_size(floating_con);
863 /* If this is a scratchpad window, don't auto center it from now on. */
864 if (floating_con->scratchpad_state == SCRATCHPAD_FRESH)
865 floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
869 * Fixes the coordinates of the floating window whenever the window gets
870 * reassigned to a different output (or when the output’s rect changes).
873 void floating_fix_coordinates(Con *con, Rect *old_rect, Rect *new_rect) {
874 DLOG("Fixing coordinates of floating window %p (rect (%d, %d), %d x %d)\n",
875 con, con->rect.x, con->rect.y, con->rect.width, con->rect.height);
876 DLOG("old_rect = (%d, %d), %d x %d\n",
877 old_rect->x, old_rect->y, old_rect->width, old_rect->height);
878 DLOG("new_rect = (%d, %d), %d x %d\n",
879 new_rect->x, new_rect->y, new_rect->width, new_rect->height);
880 /* First we get the x/y coordinates relative to the x/y coordinates
881 * of the output on which the window is on */
882 int32_t rel_x = con->rect.x - old_rect->x + (int32_t)(con->rect.width / 2);
883 int32_t rel_y = con->rect.y - old_rect->y + (int32_t)(con->rect.height / 2);
884 /* Then we calculate a fraction, for example 0.63 for a window
885 * which is at y = 1212 of a 1920 px high output */
886 DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n",
887 rel_x, rel_y, (double)rel_x / old_rect->width, (double)rel_y / old_rect->height,
888 old_rect->width, old_rect->height);
889 /* Here we have to multiply at first. Or we will lose precision when not compiled with -msse2 */
890 con->rect.x = (int32_t)new_rect->x + (double)(rel_x * (int32_t)new_rect->width) / (int32_t)old_rect->width - (int32_t)(con->rect.width / 2);
891 con->rect.y = (int32_t)new_rect->y + (double)(rel_y * (int32_t)new_rect->height) / (int32_t)old_rect->height - (int32_t)(con->rect.height / 2);
892 DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y);
897 * Moves the client 10px to the specified direction.
900 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
901 DLOG("floating move\n");
903 Rect destination = currently_focused->rect;
904 Rect *screen = &(currently_focused->workspace->output->rect);
919 /* to make static analyzers happy */
924 /* Prevent windows from vanishing completely */
925 if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
926 (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
927 (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
928 (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
929 DLOG("boundary check failed, not moving\n");
933 currently_focused->rect = destination;
934 reposition_client(conn, currently_focused);
936 /* Because reposition_client does not send a faked configure event (only resize does),
937 * we need to initiate that on our own */
938 fake_absolute_configure_notify(conn, currently_focused);
939 /* fake_absolute_configure_notify flushes */
943 * Hides all floating clients (or show them if they are currently hidden) on
944 * the specified workspace.
947 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
950 workspace->floating_hidden = !workspace->floating_hidden;
951 DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
952 TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
953 if (workspace->floating_hidden)
954 client_unmap(conn, client);
955 else client_map(conn, client);
958 /* If we just unmapped all floating windows we should ensure that the focus
959 * is set correctly, that ist, to the first non-floating client in stack */
960 if (workspace->floating_hidden)
961 SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
962 if (client_is_floating(client))
964 set_focus(conn, client, true);