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.
15 * Calculates sum of heights and sum of widths of all currently active outputs
18 static Rect total_outputs_dimensions(void) {
19 if (TAILQ_EMPTY(&outputs))
20 return (Rect){0, 0, root_screen->width_in_pixels, root_screen->height_in_pixels};
23 /* Use Rect to encapsulate dimensions, ignoring x/y */
24 Rect outputs_dimensions = {0, 0, 0, 0};
25 TAILQ_FOREACH(output, &outputs, outputs) {
26 outputs_dimensions.height += output->rect.height;
27 outputs_dimensions.width += output->rect.width;
29 return outputs_dimensions;
33 * Called when a floating window is created or resized.
34 * This function resizes the window if its size is higher or lower than the
35 * configured maximum/minimum size, respectively.
38 void floating_check_size(Con *floating_con) {
39 /* Define reasonable minimal and maximal sizes for floating windows */
40 const int floating_sane_min_height = 50;
41 const int floating_sane_min_width = 75;
42 Rect floating_sane_max_dimensions;
43 Con *focused_con = con_descend_focused(floating_con);
45 /* obey size increments */
46 if (focused_con->window != NULL && (focused_con->window->height_increment || focused_con->window->width_increment)) {
47 Rect border_rect = con_border_style_rect(focused_con);
49 /* We have to do the opposite calculations that render_con() do
50 * to get the exact size we want. */
51 border_rect.width = -border_rect.width;
52 border_rect.width += 2 * focused_con->border_width;
53 border_rect.height = -border_rect.height;
54 border_rect.height += 2 * focused_con->border_width;
55 if (con_border_style(focused_con) == BS_NORMAL)
56 border_rect.height += render_deco_height();
58 if (focused_con->window->height_increment &&
59 floating_con->rect.height >= focused_con->window->base_height + border_rect.height) {
60 floating_con->rect.height -= focused_con->window->base_height + border_rect.height;
61 floating_con->rect.height -= floating_con->rect.height % focused_con->window->height_increment;
62 floating_con->rect.height += focused_con->window->base_height + border_rect.height;
65 if (focused_con->window->width_increment &&
66 floating_con->rect.width >= focused_con->window->base_width + border_rect.width) {
67 floating_con->rect.width -= focused_con->window->base_width + border_rect.width;
68 floating_con->rect.width -= floating_con->rect.width % focused_con->window->width_increment;
69 floating_con->rect.width += focused_con->window->base_width + border_rect.width;
73 /* Unless user requests otherwise (-1), ensure width/height do not exceed
74 * configured maxima or, if unconfigured, limit to combined width of all
76 if (config.floating_minimum_height != -1) {
77 if (config.floating_minimum_height == 0)
78 floating_con->rect.height = max(floating_con->rect.height, floating_sane_min_height);
80 floating_con->rect.height = max(floating_con->rect.height, config.floating_minimum_height);
82 if (config.floating_minimum_width != -1) {
83 if (config.floating_minimum_width == 0)
84 floating_con->rect.width = max(floating_con->rect.width, floating_sane_min_width);
86 floating_con->rect.width = max(floating_con->rect.width, config.floating_minimum_width);
89 /* Unless user requests otherwise (-1), raise the width/height to
90 * reasonable minimum dimensions */
91 floating_sane_max_dimensions = total_outputs_dimensions();
92 if (config.floating_maximum_height != -1) {
93 if (config.floating_maximum_height == 0)
94 floating_con->rect.height = min(floating_con->rect.height, floating_sane_max_dimensions.height);
96 floating_con->rect.height = min(floating_con->rect.height, config.floating_maximum_height);
98 if (config.floating_maximum_width != -1) {
99 if (config.floating_maximum_width == 0)
100 floating_con->rect.width = min(floating_con->rect.width, floating_sane_max_dimensions.width);
102 floating_con->rect.width = min(floating_con->rect.width, config.floating_maximum_width);
106 void floating_enable(Con *con, bool automatic) {
107 bool set_focus = (con == focused);
109 if (con_is_docked(con)) {
110 LOG("Container is a dock window, not enabling floating mode.\n");
114 if (con_is_floating(con)) {
115 LOG("Container is already in floating mode, not doing anything.\n");
119 /* 1: If the container is a workspace container, we need to create a new
120 * split-container with the same layout and make that one floating. We
121 * cannot touch the workspace container itself because floating containers
122 * are children of the workspace. */
123 if (con->type == CT_WORKSPACE) {
124 LOG("This is a workspace, creating new container around content\n");
125 if (con_num_children(con) == 0) {
126 LOG("Workspace is empty, aborting\n");
129 /* TODO: refactor this with src/con.c:con_set_layout */
130 Con *new = con_new(NULL, NULL);
132 new->layout = con->layout;
134 /* since the new container will be set into floating mode directly
135 * afterwards, we need to copy the workspace rect. */
136 memcpy(&(new->rect), &(con->rect), sizeof(Rect));
138 Con *old_focused = TAILQ_FIRST(&(con->focus_head));
139 if (old_focused == TAILQ_END(&(con->focus_head)))
142 /* 4: move the existing cons of this workspace below the new con */
143 DLOG("Moving cons\n");
145 while (!TAILQ_EMPTY(&(con->nodes_head))) {
146 child = TAILQ_FIRST(&(con->nodes_head));
148 con_attach(child, new, true);
151 /* 4: attach the new split container to the workspace */
152 DLOG("Attaching new split to ws\n");
153 con_attach(new, con, false);
156 con_focus(old_focused);
162 /* 1: detach the container from its parent */
163 /* TODO: refactor this with tree_close_internal() */
164 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
165 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
167 con_fix_percent(con->parent);
169 /* 2: create a new container to render the decoration on, add
170 * it as a floating window to the workspace */
171 Con *nc = con_new(NULL, NULL);
172 /* we need to set the parent afterwards instead of passing it as an
173 * argument to con_new() because nc would be inserted into the tiling layer
175 Con *ws = con_get_workspace(con);
177 nc->type = CT_FLOATING_CON;
178 nc->layout = L_SPLITH;
179 /* We insert nc already, even though its rect is not yet calculated. This
180 * is necessary because otherwise the workspace might be empty (and get
181 * closed in tree_close_internal()) even though it’s not. */
182 TAILQ_INSERT_TAIL(&(ws->floating_head), nc, floating_windows);
183 TAILQ_INSERT_TAIL(&(ws->focus_head), nc, focused);
185 /* check if the parent container is empty and close it if so */
186 if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) &&
187 con_num_children(con->parent) == 0) {
188 DLOG("Old container empty after setting this child to floating, closing\n");
189 tree_close_internal(con->parent, DONT_KILL_WINDOW, false, false);
193 sasprintf(&name, "[i3 con] floatingcon around %p", con);
194 x_set_name(nc, name);
197 /* find the height for the decorations */
198 int deco_height = render_deco_height();
200 DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height);
201 DLOG("Geometry = (%d, %d) with %d x %d\n", con->geometry.x, con->geometry.y, con->geometry.width, con->geometry.height);
202 Rect zero = {0, 0, 0, 0};
203 nc->rect = con->geometry;
204 /* If the geometry was not set (split containers), we need to determine a
205 * sensible one by combining the geometry of all children */
206 if (memcmp(&(nc->rect), &zero, sizeof(Rect)) == 0) {
207 DLOG("Geometry not set, combining children\n");
209 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
210 DLOG("child geometry: %d x %d\n", child->geometry.width, child->geometry.height);
211 nc->rect.width += child->geometry.width;
212 nc->rect.height = max(nc->rect.height, child->geometry.height);
216 floating_check_size(nc);
218 /* 3: attach the child to the new parent container. We need to do this
219 * because con_border_style_rect() needs to access con->parent. */
222 con->floating = FLOATING_USER_ON;
224 /* 4: set the border style as specified with new_float */
226 con->border_style = config.default_floating_border;
228 /* Add pixels for the decoration. */
229 Rect border_style_rect = con_border_style_rect(con);
231 nc->rect.height -= border_style_rect.height;
232 nc->rect.width -= border_style_rect.width;
234 /* Add some more pixels for the title bar */
235 if (con_border_style(con) == BS_NORMAL)
236 nc->rect.height += deco_height;
238 /* Honor the X11 border */
239 nc->rect.height += con->border_width * 2;
240 nc->rect.width += con->border_width * 2;
242 /* Some clients (like GIMP’s color picker window) get mapped
243 * to (0, 0), so we push them to a reasonable position
244 * (centered over their leader) */
245 if (nc->rect.x == 0 && nc->rect.y == 0) {
247 if (con->window && con->window->leader != XCB_NONE &&
248 (leader = con_by_window_id(con->window->leader)) != NULL) {
249 DLOG("Centering above leader\n");
250 floating_center(nc, leader->rect);
252 /* center the window on workspace as fallback */
253 floating_center(nc, ws->rect);
257 /* Sanity check: Are the coordinates on the appropriate output? If not, we
258 * need to change them */
259 Output *current_output = get_output_containing(nc->rect.x +
260 (nc->rect.width / 2),
261 nc->rect.y + (nc->rect.height / 2));
263 Con *correct_output = con_get_output(ws);
264 if (!current_output || current_output->con != correct_output) {
265 DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n",
266 nc->rect.x, nc->rect.y);
268 /* If moving from one output to another, keep the relative position
269 * consistent (e.g. a centered dialog will remain centered). */
271 floating_fix_coordinates(nc, ¤t_output->con->rect, &correct_output->rect);
273 nc->rect.x = correct_output->rect.x;
274 nc->rect.y = correct_output->rect.y;
278 DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
280 /* 5: Subtract the deco_height in order to make the floating window appear
281 * at precisely the position it specified in its original geometry (which
282 * is what applications might remember). */
283 deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
284 nc->rect.y -= deco_height;
286 DLOG("Corrected y = %d (deco_height = %d)\n", nc->rect.y, deco_height);
288 TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
289 TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
291 /* render the cons to get initial window_rect correct */
292 render_con(nc, false);
293 render_con(con, false);
298 /* Check if we need to re-assign it to a different workspace because of its
299 * coordinates and exit if that was done successfully. */
300 if (floating_maybe_reassign_ws(nc)) {
301 ipc_send_window_event("floating", con);
305 /* Sanitize coordinates: Check if they are on any output */
306 if (get_output_containing(nc->rect.x, nc->rect.y) != NULL) {
307 ipc_send_window_event("floating", con);
311 ELOG("No output found at destination coordinates, centering floating window on current ws\n");
312 floating_center(nc, ws->rect);
314 ipc_send_window_event("floating", con);
317 void floating_disable(Con *con, bool automatic) {
318 if (!con_is_floating(con)) {
319 LOG("Container isn't floating, not doing anything.\n");
323 const bool set_focus = (con == focused);
325 Con *ws = con_get_workspace(con);
327 /* 1: detach from parent container */
328 TAILQ_REMOVE(&(con->parent->nodes_head), con, nodes);
329 TAILQ_REMOVE(&(con->parent->focus_head), con, focused);
331 /* 2: kill parent container */
332 TAILQ_REMOVE(&(con->parent->parent->floating_head), con->parent, floating_windows);
333 TAILQ_REMOVE(&(con->parent->parent->focus_head), con->parent, focused);
334 tree_close_internal(con->parent, DONT_KILL_WINDOW, true, false);
336 /* 3: re-attach to the parent of the currently focused con on the workspace
337 * this floating con was on */
338 Con *focused = con_descend_tiling_focused(ws);
340 /* if there is no other container on this workspace, focused will be the
341 * workspace itself */
342 if (focused->type == CT_WORKSPACE)
343 con->parent = focused;
345 con->parent = focused->parent;
347 /* con_fix_percent will adjust the percent value */
350 con->floating = FLOATING_USER_OFF;
352 con_attach(con, con->parent, false);
354 con_fix_percent(con->parent);
359 ipc_send_window_event("floating", con);
363 * Toggles floating mode for the given container.
365 * If the automatic flag is set to true, this was an automatic update by a change of the
366 * window class from the application which can be overwritten by the user.
369 void toggle_floating_mode(Con *con, bool automatic) {
370 /* forbid the command to toggle floating on a CT_FLOATING_CON */
371 if (con->type == CT_FLOATING_CON) {
372 ELOG("Cannot toggle floating mode on con = %p because it is of type CT_FLOATING_CON.\n", con);
376 /* see if the client is already floating */
377 if (con_is_floating(con)) {
378 LOG("already floating, re-setting to tiling\n");
380 floating_disable(con, automatic);
384 floating_enable(con, automatic);
388 * Raises the given container in the list of floating containers
391 void floating_raise_con(Con *con) {
392 DLOG("Raising floating con %p / %s\n", con, con->name);
393 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
394 TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
398 * Checks if con’s coordinates are within its workspace and re-assigns it to
399 * the actual workspace if not.
402 bool floating_maybe_reassign_ws(Con *con) {
403 Output *output = get_output_containing(
404 con->rect.x + (con->rect.width / 2),
405 con->rect.y + (con->rect.height / 2));
408 ELOG("No output found at destination coordinates?\n");
412 if (con_get_output(con) == output->con) {
413 DLOG("still the same ws\n");
417 DLOG("Need to re-assign!\n");
419 Con *content = output_get_content(output->con);
420 Con *ws = TAILQ_FIRST(&(content->focus_head));
421 DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
422 con_move_to_workspace(con, ws, false, true, false);
423 con_focus(con_descend_focused(con));
428 * Centers a floating con above the specified rect.
431 void floating_center(Con *con, Rect rect) {
432 con->rect.x = rect.x + (rect.width / 2) - (con->rect.width / 2);
433 con->rect.y = rect.y + (rect.height / 2) - (con->rect.height / 2);
437 * Moves the given floating con to the current pointer position.
440 void floating_move_to_pointer(Con *con) {
441 assert(con->type == CT_FLOATING_CON);
443 xcb_query_pointer_reply_t *reply = xcb_query_pointer_reply(conn, xcb_query_pointer(conn, root), NULL);
445 ELOG("could not query pointer position, not moving this container\n");
449 Output *output = get_output_containing(reply->root_x, reply->root_y);
450 if (output == NULL) {
451 ELOG("The pointer is not on any output, cannot move the container here.\n");
455 /* Determine where to put the window. */
456 int32_t x = reply->root_x - con->rect.width / 2;
457 int32_t y = reply->root_y - con->rect.height / 2;
460 /* Correct target coordinates to be in-bounds. */
461 x = MAX(x, (int32_t)output->rect.x);
462 y = MAX(y, (int32_t)output->rect.y);
463 if (x + con->rect.width > output->rect.x + output->rect.width)
464 x = output->rect.x + output->rect.width - con->rect.width;
465 if (y + con->rect.height > output->rect.y + output->rect.height)
466 y = output->rect.y + output->rect.height - con->rect.height;
468 /* Update container's coordinates to position it correctly. */
469 floating_reposition(con, (Rect){x, y, con->rect.width, con->rect.height});
472 DRAGGING_CB(drag_window_callback) {
473 const struct xcb_button_press_event_t *event = extra;
475 /* Reposition the client correctly while moving */
476 con->rect.x = old_rect->x + (new_x - event->root_x);
477 con->rect.y = old_rect->y + (new_y - event->root_y);
479 render_con(con, false);
483 /* Check if we cross workspace boundaries while moving */
484 if (!floating_maybe_reassign_ws(con))
486 /* Ensure not to warp the pointer while dragging */
492 * Called when the user clicked on the titlebar of a floating window.
493 * Calls the drag_pointer function with the drag_window callback
496 void floating_drag_window(Con *con, const xcb_button_press_event_t *event) {
497 DLOG("floating_drag_window\n");
499 /* Push changes before dragging, so that the window gets raised now and not
500 * after the user releases the mouse button */
503 /* Store the initial rect in case of user revert/cancel */
504 Rect initial_rect = con->rect;
506 /* Drag the window */
507 drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, XCURSOR_CURSOR_MOVE, drag_window_callback, event);
509 /* If the user cancelled, undo the changes. */
510 if (drag_result == DRAG_REVERT)
511 floating_reposition(con, initial_rect);
513 /* If this is a scratchpad window, don't auto center it from now on. */
514 if (con->scratchpad_state == SCRATCHPAD_FRESH)
515 con->scratchpad_state = SCRATCHPAD_CHANGED;
521 * This is an ugly data structure which we need because there is no standard
522 * way of having nested functions (only available as a gcc extension at the
523 * moment, clang doesn’t support it) or blocks (only available as a clang
524 * extension and only on Mac OS X systems at the moment).
527 struct resize_window_callback_params {
528 const border_t corner;
529 const bool proportional;
530 const xcb_button_press_event_t *event;
533 DRAGGING_CB(resize_window_callback) {
534 const struct resize_window_callback_params *params = extra;
535 const xcb_button_press_event_t *event = params->event;
536 border_t corner = params->corner;
538 int32_t dest_x = con->rect.x;
539 int32_t dest_y = con->rect.y;
541 uint32_t dest_height;
543 double ratio = (double)old_rect->width / old_rect->height;
545 /* First guess: We resize by exactly the amount the mouse moved,
546 * taking into account in which corner the client was grabbed */
547 if (corner & BORDER_LEFT)
548 dest_width = old_rect->width - (new_x - event->root_x);
550 dest_width = old_rect->width + (new_x - event->root_x);
552 if (corner & BORDER_TOP)
553 dest_height = old_rect->height - (new_y - event->root_y);
555 dest_height = old_rect->height + (new_y - event->root_y);
557 /* User wants to keep proportions, so we may have to adjust our values */
558 if (params->proportional) {
559 dest_width = max(dest_width, (int)(dest_height * ratio));
560 dest_height = max(dest_height, (int)(dest_width / ratio));
563 con->rect = (Rect){dest_x, dest_y, dest_width, dest_height};
565 /* Obey window size */
566 floating_check_size(con);
568 /* If not the lower right corner is grabbed, we must also reposition
569 * the client by exactly the amount we resized it */
570 if (corner & BORDER_LEFT)
571 dest_x = old_rect->x + (old_rect->width - con->rect.width);
573 if (corner & BORDER_TOP)
574 dest_y = old_rect->y + (old_rect->height - con->rect.height);
576 con->rect.x = dest_x;
577 con->rect.y = dest_y;
579 /* TODO: don’t re-render the whole tree just because we change
580 * coordinates of a floating window */
582 x_push_changes(croot);
586 * Called when the user clicked on a floating window while holding the
587 * floating_modifier and the right mouse button.
588 * Calls the drag_pointer function with the resize_window callback
591 void floating_resize_window(Con *con, const bool proportional,
592 const xcb_button_press_event_t *event) {
593 DLOG("floating_resize_window\n");
595 /* corner saves the nearest corner to the original click. It contains
596 * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
599 if (event->event_x <= (int16_t)(con->rect.width / 2))
600 corner |= BORDER_LEFT;
602 corner |= BORDER_RIGHT;
605 if (event->event_y <= (int16_t)(con->rect.height / 2)) {
606 corner |= BORDER_TOP;
607 cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_TOP_LEFT_CORNER : XCURSOR_CURSOR_TOP_RIGHT_CORNER;
609 corner |= BORDER_BOTTOM;
610 cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_BOTTOM_LEFT_CORNER : XCURSOR_CURSOR_BOTTOM_RIGHT_CORNER;
613 struct resize_window_callback_params params = {corner, proportional, event};
615 /* get the initial rect in case of revert/cancel */
616 Rect initial_rect = con->rect;
618 drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, cursor, resize_window_callback, ¶ms);
620 /* If the user cancels, undo the resize */
621 if (drag_result == DRAG_REVERT)
622 floating_reposition(con, initial_rect);
624 /* If this is a scratchpad window, don't auto center it from now on. */
625 if (con->scratchpad_state == SCRATCHPAD_FRESH)
626 con->scratchpad_state = SCRATCHPAD_CHANGED;
629 /* As endorsed by “ASSOCIATING CUSTOM DATA WITH A WATCHER” in ev(3) */
633 /* Whether this modal event loop should be exited and with which result. */
634 drag_result_t result;
636 /* The container that is being dragged or resized, or NULL if this is a
637 * drag of the resize handle. */
640 /* The dimensions of con when the loop was started. */
643 /* The callback to invoke after every pointer movement. */
646 /* User data pointer for callback. */
650 static void xcb_drag_check_cb(EV_P_ ev_check *w, int revents) {
651 struct drag_x11_cb *dragloop = (struct drag_x11_cb *)w;
652 xcb_motion_notify_event_t *last_motion_notify = NULL;
653 xcb_generic_event_t *event;
655 while ((event = xcb_poll_for_event(conn)) != NULL) {
656 if (event->response_type == 0) {
657 xcb_generic_error_t *error = (xcb_generic_error_t *)event;
658 DLOG("X11 Error received (probably harmless)! sequence 0x%x, error_code = %d\n",
659 error->sequence, error->error_code);
664 /* Strip off the highest bit (set if the event is generated) */
665 int type = (event->response_type & 0x7F);
668 case XCB_BUTTON_RELEASE:
669 dragloop->result = DRAG_SUCCESS;
673 DLOG("A key was pressed during drag, reverting changes.\n");
674 dragloop->result = DRAG_REVERT;
675 handle_event(type, event);
678 case XCB_UNMAP_NOTIFY: {
679 xcb_unmap_notify_event_t *unmap_event = (xcb_unmap_notify_event_t *)event;
680 Con *con = con_by_window_id(unmap_event->window);
683 DLOG("UnmapNotify for window 0x%08x (container %p)\n", unmap_event->window, con);
685 if (con_get_workspace(con) == con_get_workspace(focused)) {
686 DLOG("UnmapNotify for a managed window on the current workspace, aborting\n");
687 dragloop->result = DRAG_ABORT;
691 handle_event(type, event);
695 case XCB_MOTION_NOTIFY:
696 /* motion_notify events are saved for later */
697 FREE(last_motion_notify);
698 last_motion_notify = (xcb_motion_notify_event_t *)event;
702 DLOG("Passing to original handler\n");
703 handle_event(type, event);
707 if (last_motion_notify != (xcb_motion_notify_event_t *)event)
710 if (dragloop->result != DRAGGING)
714 if (last_motion_notify == NULL)
719 &(dragloop->old_rect),
720 last_motion_notify->root_x,
721 last_motion_notify->root_y,
723 free(last_motion_notify);
727 * This function grabs your pointer and keyboard and lets you drag stuff around
728 * (borders). Every time you move your mouse, an XCB_MOTION_NOTIFY event will
729 * be received and the given callback will be called with the parameters
730 * specified (client, border on which the click originally was), the original
731 * rect of the client, the event and the new coordinates (x, y).
734 drag_result_t drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_window_t
736 border_t border, int cursor, callback_t callback, const void *extra) {
737 xcb_cursor_t xcursor = (cursor && xcursor_supported) ? xcursor_get_cursor(cursor) : XCB_NONE;
739 /* Grab the pointer */
740 xcb_grab_pointer_cookie_t cookie;
741 xcb_grab_pointer_reply_t *reply;
742 xcb_generic_error_t *error;
744 cookie = xcb_grab_pointer(conn,
745 false, /* get all pointer events specified by the following mask */
746 root, /* grab the root window */
747 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
748 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
749 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
750 confine_to, /* confine_to = in which window should the cursor stay */
751 xcursor, /* possibly display a special cursor */
754 if ((reply = xcb_grab_pointer_reply(conn, cookie, &error)) == NULL) {
755 ELOG("Could not grab pointer (error_code = %d)\n", error->error_code);
762 /* Grab the keyboard */
763 xcb_grab_keyboard_cookie_t keyb_cookie;
764 xcb_grab_keyboard_reply_t *keyb_reply;
766 keyb_cookie = xcb_grab_keyboard(conn,
767 false, /* get all keyboard events */
768 root, /* grab the root window */
770 XCB_GRAB_MODE_ASYNC, /* continue processing pointer events as normal */
771 XCB_GRAB_MODE_ASYNC /* keyboard mode */
774 if ((keyb_reply = xcb_grab_keyboard_reply(conn, keyb_cookie, &error)) == NULL) {
775 ELOG("Could not grab keyboard (error_code = %d)\n", error->error_code);
777 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
783 /* Go into our own event loop */
784 struct drag_x11_cb loop = {
787 .callback = callback,
791 loop.old_rect = con->rect;
792 ev_check_init(&loop.check, xcb_drag_check_cb);
793 main_set_x11_cb(false);
794 ev_check_start(main_loop, &loop.check);
796 while (loop.result == DRAGGING)
797 ev_run(main_loop, EVRUN_ONCE);
799 ev_check_stop(main_loop, &loop.check);
800 main_set_x11_cb(true);
802 xcb_ungrab_keyboard(conn, XCB_CURRENT_TIME);
803 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
810 * Repositions the CT_FLOATING_CON to have the coordinates specified by
811 * newrect, but only if the coordinates are not out-of-bounds. Also reassigns
812 * the floating con to a different workspace if this move was across different
816 void floating_reposition(Con *con, Rect newrect) {
817 /* Sanity check: Are the new coordinates on any output? If not, we
818 * ignore that request. */
819 if (!contained_by_output(newrect)) {
820 ELOG("No output found at destination coordinates. Not repositioning.\n");
826 floating_maybe_reassign_ws(con);
828 /* If this is a scratchpad window, don't auto center it from now on. */
829 if (con->scratchpad_state == SCRATCHPAD_FRESH)
830 con->scratchpad_state = SCRATCHPAD_CHANGED;
836 * Sets size of the CT_FLOATING_CON to specified dimensions. Might limit the
837 * actual size with regard to size constraints taken from user settings.
838 * Additionally, the dimensions may be upscaled until they're divisible by the
839 * window's size hints.
842 void floating_resize(Con *floating_con, int x, int y) {
843 DLOG("floating resize to %dx%d px\n", x, y);
844 Rect *rect = &floating_con->rect;
845 Con *focused_con = con_descend_focused(floating_con);
846 if (focused_con->window == NULL) {
847 DLOG("No window is focused. Not resizing.\n");
850 int wi = focused_con->window->width_increment;
851 int hi = focused_con->window->height_increment;
855 rect->width += (wi - 1 - rect->width) % wi;
857 rect->height += (hi - 1 - rect->height) % hi;
859 floating_check_size(floating_con);
861 /* If this is a scratchpad window, don't auto center it from now on. */
862 if (floating_con->scratchpad_state == SCRATCHPAD_FRESH)
863 floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
867 * Fixes the coordinates of the floating window whenever the window gets
868 * reassigned to a different output (or when the output’s rect changes).
871 void floating_fix_coordinates(Con *con, Rect *old_rect, Rect *new_rect) {
872 DLOG("Fixing coordinates of floating window %p (rect (%d, %d), %d x %d)\n",
873 con, con->rect.x, con->rect.y, con->rect.width, con->rect.height);
874 DLOG("old_rect = (%d, %d), %d x %d\n",
875 old_rect->x, old_rect->y, old_rect->width, old_rect->height);
876 DLOG("new_rect = (%d, %d), %d x %d\n",
877 new_rect->x, new_rect->y, new_rect->width, new_rect->height);
878 /* First we get the x/y coordinates relative to the x/y coordinates
879 * of the output on which the window is on */
880 int32_t rel_x = con->rect.x - old_rect->x + (int32_t)(con->rect.width / 2);
881 int32_t rel_y = con->rect.y - old_rect->y + (int32_t)(con->rect.height / 2);
882 /* Then we calculate a fraction, for example 0.63 for a window
883 * which is at y = 1212 of a 1920 px high output */
884 DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n",
885 rel_x, rel_y, (double)rel_x / old_rect->width, (double)rel_y / old_rect->height,
886 old_rect->width, old_rect->height);
887 /* Here we have to multiply at first. Or we will lose precision when not compiled with -msse2 */
888 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);
889 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);
890 DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y);
895 * Moves the client 10px to the specified direction.
898 void floating_move(xcb_connection_t *conn, Client *currently_focused, direction_t direction) {
899 DLOG("floating move\n");
901 Rect destination = currently_focused->rect;
902 Rect *screen = &(currently_focused->workspace->output->rect);
917 /* to make static analyzers happy */
922 /* Prevent windows from vanishing completely */
923 if ((int32_t)(destination.x + destination.width - 5) <= (int32_t)screen->x ||
924 (int32_t)(destination.x + 5) >= (int32_t)(screen->x + screen->width) ||
925 (int32_t)(destination.y + destination.height - 5) <= (int32_t)screen->y ||
926 (int32_t)(destination.y + 5) >= (int32_t)(screen->y + screen->height)) {
927 DLOG("boundary check failed, not moving\n");
931 currently_focused->rect = destination;
932 reposition_client(conn, currently_focused);
934 /* Because reposition_client does not send a faked configure event (only resize does),
935 * we need to initiate that on our own */
936 fake_absolute_configure_notify(conn, currently_focused);
937 /* fake_absolute_configure_notify flushes */
941 * Hides all floating clients (or show them if they are currently hidden) on
942 * the specified workspace.
945 void floating_toggle_hide(xcb_connection_t *conn, Workspace *workspace) {
948 workspace->floating_hidden = !workspace->floating_hidden;
949 DLOG("floating_hidden is now: %d\n", workspace->floating_hidden);
950 TAILQ_FOREACH(client, &(workspace->floating_clients), floating_clients) {
951 if (workspace->floating_hidden)
952 client_unmap(conn, client);
953 else client_map(conn, client);
956 /* If we just unmapped all floating windows we should ensure that the focus
957 * is set correctly, that ist, to the first non-floating client in stack */
958 if (workspace->floating_hidden)
959 SLIST_FOREACH(client, &(workspace->focus_stack), focus_clients) {
960 if (client_is_floating(client))
962 set_focus(conn, client, true);