2 * vim:ts=4:sw=4:expandtab
4 * i3 - an improved dynamic tiling window manager
5 * © 2009 Michael Stapelberg and contributors (see also: LICENSE)
7 * floating.c: Floating windows.
13 #define MAX(x, y) ((x) > (y) ? (x) : (y))
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 * Updates I3_FLOATING_WINDOW by either setting or removing it on the con and
39 static void floating_set_hint_atom(Con *con, bool floating) {
40 if (!con_is_leaf(con)) {
42 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
43 floating_set_hint_atom(child, floating);
47 if (con->window == NULL) {
53 xcb_change_property(conn, XCB_PROP_MODE_REPLACE, con->window->id,
54 A_I3_FLOATING_WINDOW, XCB_ATOM_CARDINAL, 32, 1, &val);
56 xcb_delete_property(conn, con->window->id, A_I3_FLOATING_WINDOW);
63 * Called when a floating window is created or resized.
64 * This function resizes the window if its size is higher or lower than the
65 * configured maximum/minimum size, respectively.
68 void floating_check_size(Con *floating_con) {
69 /* Define reasonable minimal and maximal sizes for floating windows */
70 const int floating_sane_min_height = 50;
71 const int floating_sane_min_width = 75;
72 Rect floating_sane_max_dimensions;
73 Con *focused_con = con_descend_focused(floating_con);
75 Rect border_rect = con_border_style_rect(focused_con);
76 /* We have to do the opposite calculations that render_con() do
77 * to get the exact size we want. */
78 border_rect.width = -border_rect.width;
79 border_rect.width += 2 * focused_con->border_width;
80 border_rect.height = -border_rect.height;
81 border_rect.height += 2 * focused_con->border_width;
82 if (con_border_style(focused_con) == BS_NORMAL) {
83 border_rect.height += render_deco_height();
86 if (focused_con->window != NULL) {
87 if (focused_con->window->min_width) {
88 floating_con->rect.width -= border_rect.width;
89 floating_con->rect.width = max(floating_con->rect.width, focused_con->window->min_width);
90 floating_con->rect.width += border_rect.width;
93 if (focused_con->window->min_height) {
94 floating_con->rect.height -= border_rect.height;
95 floating_con->rect.height = max(floating_con->rect.height, focused_con->window->min_height);
96 floating_con->rect.height += border_rect.height;
99 if (focused_con->window->height_increment &&
100 floating_con->rect.height >= focused_con->window->base_height + border_rect.height) {
101 floating_con->rect.height -= focused_con->window->base_height + border_rect.height;
102 floating_con->rect.height -= floating_con->rect.height % focused_con->window->height_increment;
103 floating_con->rect.height += focused_con->window->base_height + border_rect.height;
106 if (focused_con->window->width_increment &&
107 floating_con->rect.width >= focused_con->window->base_width + border_rect.width) {
108 floating_con->rect.width -= focused_con->window->base_width + border_rect.width;
109 floating_con->rect.width -= floating_con->rect.width % focused_con->window->width_increment;
110 floating_con->rect.width += focused_con->window->base_width + border_rect.width;
114 /* Unless user requests otherwise (-1), raise the width/height to
115 * reasonable minimum dimensions */
116 if (config.floating_minimum_height != -1) {
117 floating_con->rect.height -= border_rect.height;
118 if (config.floating_minimum_height == 0) {
119 floating_con->rect.height = max(floating_con->rect.height, floating_sane_min_height);
121 floating_con->rect.height = max(floating_con->rect.height, config.floating_minimum_height);
123 floating_con->rect.height += border_rect.height;
126 if (config.floating_minimum_width != -1) {
127 floating_con->rect.width -= border_rect.width;
128 if (config.floating_minimum_width == 0) {
129 floating_con->rect.width = max(floating_con->rect.width, floating_sane_min_width);
131 floating_con->rect.width = max(floating_con->rect.width, config.floating_minimum_width);
133 floating_con->rect.width += border_rect.width;
136 /* Unless user requests otherwise (-1), ensure width/height do not exceed
137 * configured maxima or, if unconfigured, limit to combined width of all
139 floating_sane_max_dimensions = total_outputs_dimensions();
140 if (config.floating_maximum_height != -1) {
141 floating_con->rect.height -= border_rect.height;
142 if (config.floating_maximum_height == 0) {
143 floating_con->rect.height = min(floating_con->rect.height, floating_sane_max_dimensions.height);
145 floating_con->rect.height = min(floating_con->rect.height, config.floating_maximum_height);
147 floating_con->rect.height += border_rect.height;
150 if (config.floating_maximum_width != -1) {
151 floating_con->rect.width -= border_rect.width;
152 if (config.floating_maximum_width == 0) {
153 floating_con->rect.width = min(floating_con->rect.width, floating_sane_max_dimensions.width);
155 floating_con->rect.width = min(floating_con->rect.width, config.floating_maximum_width);
157 floating_con->rect.width += border_rect.width;
161 void floating_enable(Con *con, bool automatic) {
162 bool set_focus = (con == focused);
164 if (con_is_docked(con)) {
165 LOG("Container is a dock window, not enabling floating mode.\n");
169 if (con_is_floating(con)) {
170 LOG("Container is already in floating mode, not doing anything.\n");
174 if (con->type == CT_WORKSPACE) {
175 LOG("Container is a workspace, not enabling floating mode.\n");
179 Con *focus_head_placeholder = NULL;
180 bool focus_before_parent = true;
182 /* Find recursively the ancestor container which is a child of our workspace.
183 * We need to reuse its focus position later. */
185 while (ancestor->parent->type != CT_WORKSPACE) {
186 focus_before_parent &= TAILQ_FIRST(&(ancestor->parent->focus_head)) == ancestor;
187 ancestor = ancestor->parent;
189 /* Consider the part of the focus stack of our current workspace:
190 * [ ... S_{i-1} S_{i} S_{i+1} ... ]
191 * Where S_{x} is a container tree and the container 'con' that is beeing switched to
192 * floating belongs in S_{i}. The new floating container, 'nc', will have the
193 * workspace as its parent so it needs to be placed in this stack. If C was focused
194 * we just need to call con_focus(). Otherwise, nc must be placed before or after S_{i}.
195 * We should avoid using the S_{i} container for our operations since it might get
196 * killed if it has no other children. So, the two possible positions are after S_{i-1}
199 if (focus_before_parent) {
200 focus_head_placeholder = TAILQ_PREV(ancestor, focus_head, focused);
202 focus_head_placeholder = TAILQ_NEXT(ancestor, focused);
206 /* 1: detach the container from its parent */
207 /* TODO: refactor this with tree_close_internal() */
209 con_fix_percent(con->parent);
211 /* 2: create a new container to render the decoration on, add
212 * it as a floating window to the workspace */
213 Con *nc = con_new(NULL, NULL);
214 /* we need to set the parent afterwards instead of passing it as an
215 * argument to con_new() because nc would be inserted into the tiling layer
217 Con *ws = con_get_workspace(con);
219 nc->type = CT_FLOATING_CON;
220 nc->layout = L_SPLITH;
221 /* We insert nc already, even though its rect is not yet calculated. This
222 * is necessary because otherwise the workspace might be empty (and get
223 * closed in tree_close_internal()) even though it’s not. */
224 TAILQ_INSERT_HEAD(&(ws->floating_head), nc, floating_windows);
226 struct focus_head *fh = &(ws->focus_head);
227 if (focus_before_parent) {
228 if (focus_head_placeholder) {
229 TAILQ_INSERT_AFTER(fh, focus_head_placeholder, nc, focused);
231 TAILQ_INSERT_HEAD(fh, nc, focused);
234 if (focus_head_placeholder) {
235 TAILQ_INSERT_BEFORE(focus_head_placeholder, nc, focused);
237 /* Also used for the set_focus case */
238 TAILQ_INSERT_TAIL(fh, nc, focused);
242 /* check if the parent container is empty and close it if so */
243 if ((con->parent->type == CT_CON || con->parent->type == CT_FLOATING_CON) &&
244 con_num_children(con->parent) == 0) {
245 DLOG("Old container empty after setting this child to floating, closing\n");
246 Con *parent = con->parent;
247 /* clear the pointer before calling tree_close_internal in which the memory is freed */
249 tree_close_internal(parent, DONT_KILL_WINDOW, false, false);
253 sasprintf(&name, "[i3 con] floatingcon around %p", con);
254 x_set_name(nc, name);
257 /* find the height for the decorations */
258 int deco_height = render_deco_height();
260 DLOG("Original rect: (%d, %d) with %d x %d\n", con->rect.x, con->rect.y, con->rect.width, con->rect.height);
261 DLOG("Geometry = (%d, %d) with %d x %d\n", con->geometry.x, con->geometry.y, con->geometry.width, con->geometry.height);
262 Rect zero = {0, 0, 0, 0};
263 nc->rect = con->geometry;
264 /* If the geometry was not set (split containers), we need to determine a
265 * sensible one by combining the geometry of all children */
266 if (memcmp(&(nc->rect), &zero, sizeof(Rect)) == 0) {
267 DLOG("Geometry not set, combining children\n");
269 TAILQ_FOREACH(child, &(con->nodes_head), nodes) {
270 DLOG("child geometry: %d x %d\n", child->geometry.width, child->geometry.height);
271 nc->rect.width += child->geometry.width;
272 nc->rect.height = max(nc->rect.height, child->geometry.height);
276 TAILQ_INSERT_TAIL(&(nc->nodes_head), con, nodes);
277 TAILQ_INSERT_TAIL(&(nc->focus_head), con, focused);
279 /* 3: attach the child to the new parent container. We need to do this
280 * because con_border_style_rect() needs to access con->parent. */
283 con->floating = FLOATING_USER_ON;
285 /* 4: set the border style as specified with new_float */
287 con->border_style = config.default_floating_border;
289 /* Add pixels for the decoration. */
290 Rect border_style_rect = con_border_style_rect(con);
292 nc->rect.height -= border_style_rect.height;
293 nc->rect.width -= border_style_rect.width;
295 /* Add some more pixels for the title bar */
296 if (con_border_style(con) == BS_NORMAL) {
297 nc->rect.height += deco_height;
300 /* Honor the X11 border */
301 nc->rect.height += con->border_width * 2;
302 nc->rect.width += con->border_width * 2;
304 floating_check_size(nc);
306 /* Some clients (like GIMP’s color picker window) get mapped
307 * to (0, 0), so we push them to a reasonable position
308 * (centered over their leader) */
309 if (nc->rect.x == 0 && nc->rect.y == 0) {
311 if (con->window && con->window->leader != XCB_NONE &&
312 (leader = con_by_window_id(con->window->leader)) != NULL) {
313 DLOG("Centering above leader\n");
314 floating_center(nc, leader->rect);
316 /* center the window on workspace as fallback */
317 floating_center(nc, ws->rect);
321 /* Sanity check: Are the coordinates on the appropriate output? If not, we
322 * need to change them */
323 Output *current_output = get_output_from_rect(nc->rect);
324 Con *correct_output = con_get_output(ws);
325 if (!current_output || current_output->con != correct_output) {
326 DLOG("This floating window is on the wrong output, fixing coordinates (currently (%d, %d))\n",
327 nc->rect.x, nc->rect.y);
329 /* If moving from one output to another, keep the relative position
330 * consistent (e.g. a centered dialog will remain centered). */
331 if (current_output) {
332 floating_fix_coordinates(nc, ¤t_output->con->rect, &correct_output->rect);
333 /* Make sure that the result is in the correct output. */
334 current_output = get_output_from_rect(nc->rect);
336 if (!current_output || current_output->con != correct_output) {
337 floating_center(nc, ws->rect);
341 DLOG("Floating rect: (%d, %d) with %d x %d\n", nc->rect.x, nc->rect.y, nc->rect.width, nc->rect.height);
343 /* 5: Subtract the deco_height in order to make the floating window appear
344 * at precisely the position it specified in its original geometry (which
345 * is what applications might remember). */
346 deco_height = (con->border_style == BS_NORMAL ? render_deco_height() : 0);
347 nc->rect.y -= deco_height;
349 DLOG("Corrected y = %d (deco_height = %d)\n", nc->rect.y, deco_height);
351 /* render the cons to get initial window_rect correct */
352 render_con(nc, false);
353 render_con(con, false);
358 floating_set_hint_atom(nc, true);
359 ipc_send_window_event("floating", con);
362 void floating_disable(Con *con, bool automatic) {
363 if (!con_is_floating(con)) {
364 LOG("Container isn't floating, not doing anything.\n");
368 Con *ws = con_get_workspace(con);
369 if (con_is_internal(ws)) {
370 LOG("Can't disable floating for container in internal workspace.\n");
373 Con *tiling_focused = con_descend_tiling_focused(ws);
375 if (tiling_focused->type == CT_WORKSPACE) {
376 Con *parent = con->parent;
379 tree_close_internal(parent, DONT_KILL_WINDOW, true, false);
380 con_attach(con, tiling_focused, false);
382 con_fix_percent(con->parent);
384 insert_con_into(con, tiling_focused, AFTER);
387 con->floating = FLOATING_USER_OFF;
388 floating_set_hint_atom(con, false);
389 ipc_send_window_event("floating", con);
393 * Toggles floating mode for the given container.
395 * If the automatic flag is set to true, this was an automatic update by a change of the
396 * window class from the application which can be overwritten by the user.
399 void toggle_floating_mode(Con *con, bool automatic) {
400 /* forbid the command to toggle floating on a CT_FLOATING_CON */
401 if (con->type == CT_FLOATING_CON) {
402 ELOG("Cannot toggle floating mode on con = %p because it is of type CT_FLOATING_CON.\n", con);
406 /* see if the client is already floating */
407 if (con_is_floating(con)) {
408 LOG("already floating, re-setting to tiling\n");
410 floating_disable(con, automatic);
414 floating_enable(con, automatic);
418 * Raises the given container in the list of floating containers
421 void floating_raise_con(Con *con) {
422 DLOG("Raising floating con %p / %s\n", con, con->name);
423 TAILQ_REMOVE(&(con->parent->floating_head), con, floating_windows);
424 TAILQ_INSERT_TAIL(&(con->parent->floating_head), con, floating_windows);
428 * Checks if con’s coordinates are within its workspace and re-assigns it to
429 * the actual workspace if not.
432 bool floating_maybe_reassign_ws(Con *con) {
433 Output *output = get_output_from_rect(con->rect);
436 ELOG("No output found at destination coordinates?\n");
440 if (con_get_output(con) == output->con) {
441 DLOG("still the same ws\n");
445 DLOG("Need to re-assign!\n");
447 Con *content = output_get_content(output->con);
448 Con *ws = TAILQ_FIRST(&(content->focus_head));
449 DLOG("Moving con %p / %s to workspace %p / %s\n", con, con->name, ws, ws->name);
450 con_move_to_workspace(con, ws, false, true, false);
452 con_activate(con_descend_focused(con));
457 * Centers a floating con above the specified rect.
460 void floating_center(Con *con, Rect rect) {
461 con->rect.x = rect.x + (rect.width / 2) - (con->rect.width / 2);
462 con->rect.y = rect.y + (rect.height / 2) - (con->rect.height / 2);
466 * Moves the given floating con to the current pointer position.
469 void floating_move_to_pointer(Con *con) {
470 assert(con->type == CT_FLOATING_CON);
472 xcb_query_pointer_reply_t *reply = xcb_query_pointer_reply(conn, xcb_query_pointer(conn, root), NULL);
474 ELOG("could not query pointer position, not moving this container\n");
478 Output *output = get_output_containing(reply->root_x, reply->root_y);
479 if (output == NULL) {
480 ELOG("The pointer is not on any output, cannot move the container here.\n");
484 /* Determine where to put the window. */
485 int32_t x = reply->root_x - con->rect.width / 2;
486 int32_t y = reply->root_y - con->rect.height / 2;
489 /* Correct target coordinates to be in-bounds. */
490 x = MAX(x, (int32_t)output->rect.x);
491 y = MAX(y, (int32_t)output->rect.y);
492 if (x + con->rect.width > output->rect.x + output->rect.width)
493 x = output->rect.x + output->rect.width - con->rect.width;
494 if (y + con->rect.height > output->rect.y + output->rect.height)
495 y = output->rect.y + output->rect.height - con->rect.height;
497 /* Update container's coordinates to position it correctly. */
498 floating_reposition(con, (Rect){x, y, con->rect.width, con->rect.height});
501 DRAGGING_CB(drag_window_callback) {
502 const struct xcb_button_press_event_t *event = extra;
504 /* Reposition the client correctly while moving */
505 con->rect.x = old_rect->x + (new_x - event->root_x);
506 con->rect.y = old_rect->y + (new_y - event->root_y);
508 render_con(con, false);
512 /* Check if we cross workspace boundaries while moving */
513 if (!floating_maybe_reassign_ws(con))
515 /* Ensure not to warp the pointer while dragging */
521 * Called when the user clicked on the titlebar of a floating window.
522 * Calls the drag_pointer function with the drag_window callback
525 void floating_drag_window(Con *con, const xcb_button_press_event_t *event) {
526 DLOG("floating_drag_window\n");
528 /* Push changes before dragging, so that the window gets raised now and not
529 * after the user releases the mouse button */
532 /* Store the initial rect in case of user revert/cancel */
533 Rect initial_rect = con->rect;
535 /* Drag the window */
536 drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, XCURSOR_CURSOR_MOVE, drag_window_callback, event);
538 if (!con_exists(con)) {
539 DLOG("The container has been closed in the meantime.\n");
543 /* If the user cancelled, undo the changes. */
544 if (drag_result == DRAG_REVERT) {
545 floating_reposition(con, initial_rect);
549 /* If this is a scratchpad window, don't auto center it from now on. */
550 if (con->scratchpad_state == SCRATCHPAD_FRESH)
551 con->scratchpad_state = SCRATCHPAD_CHANGED;
557 * This is an ugly data structure which we need because there is no standard
558 * way of having nested functions (only available as a gcc extension at the
559 * moment, clang doesn’t support it) or blocks (only available as a clang
560 * extension and only on Mac OS X systems at the moment).
563 struct resize_window_callback_params {
564 const border_t corner;
565 const bool proportional;
566 const xcb_button_press_event_t *event;
569 DRAGGING_CB(resize_window_callback) {
570 const struct resize_window_callback_params *params = extra;
571 const xcb_button_press_event_t *event = params->event;
572 border_t corner = params->corner;
574 int32_t dest_x = con->rect.x;
575 int32_t dest_y = con->rect.y;
577 uint32_t dest_height;
579 double ratio = (double)old_rect->width / old_rect->height;
581 /* First guess: We resize by exactly the amount the mouse moved,
582 * taking into account in which corner the client was grabbed */
583 if (corner & BORDER_LEFT)
584 dest_width = old_rect->width - (new_x - event->root_x);
586 dest_width = old_rect->width + (new_x - event->root_x);
588 if (corner & BORDER_TOP)
589 dest_height = old_rect->height - (new_y - event->root_y);
591 dest_height = old_rect->height + (new_y - event->root_y);
593 /* User wants to keep proportions, so we may have to adjust our values */
594 if (params->proportional) {
595 dest_width = max(dest_width, (int)(dest_height * ratio));
596 dest_height = max(dest_height, (int)(dest_width / ratio));
599 con->rect = (Rect){dest_x, dest_y, dest_width, dest_height};
601 /* Obey window size */
602 floating_check_size(con);
604 /* If not the lower right corner is grabbed, we must also reposition
605 * the client by exactly the amount we resized it */
606 if (corner & BORDER_LEFT)
607 dest_x = old_rect->x + (old_rect->width - con->rect.width);
609 if (corner & BORDER_TOP)
610 dest_y = old_rect->y + (old_rect->height - con->rect.height);
612 con->rect.x = dest_x;
613 con->rect.y = dest_y;
615 /* TODO: don’t re-render the whole tree just because we change
616 * coordinates of a floating window */
618 x_push_changes(croot);
622 * Called when the user clicked on a floating window while holding the
623 * floating_modifier and the right mouse button.
624 * Calls the drag_pointer function with the resize_window callback
627 void floating_resize_window(Con *con, const bool proportional,
628 const xcb_button_press_event_t *event) {
629 DLOG("floating_resize_window\n");
631 /* corner saves the nearest corner to the original click. It contains
632 * a bitmask of the nearest borders (BORDER_LEFT, BORDER_RIGHT, …) */
635 if (event->event_x <= (int16_t)(con->rect.width / 2))
636 corner |= BORDER_LEFT;
638 corner |= BORDER_RIGHT;
641 if (event->event_y <= (int16_t)(con->rect.height / 2)) {
642 corner |= BORDER_TOP;
643 cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_TOP_LEFT_CORNER : XCURSOR_CURSOR_TOP_RIGHT_CORNER;
645 corner |= BORDER_BOTTOM;
646 cursor = (corner & BORDER_LEFT) ? XCURSOR_CURSOR_BOTTOM_LEFT_CORNER : XCURSOR_CURSOR_BOTTOM_RIGHT_CORNER;
649 struct resize_window_callback_params params = {corner, proportional, event};
651 /* get the initial rect in case of revert/cancel */
652 Rect initial_rect = con->rect;
654 drag_result_t drag_result = drag_pointer(con, event, XCB_NONE, BORDER_TOP /* irrelevant */, cursor, resize_window_callback, ¶ms);
656 if (!con_exists(con)) {
657 DLOG("The container has been closed in the meantime.\n");
661 /* If the user cancels, undo the resize */
662 if (drag_result == DRAG_REVERT)
663 floating_reposition(con, initial_rect);
665 /* If this is a scratchpad window, don't auto center it from now on. */
666 if (con->scratchpad_state == SCRATCHPAD_FRESH)
667 con->scratchpad_state = SCRATCHPAD_CHANGED;
670 /* Custom data structure used to track dragging-related events. */
674 /* Whether this modal event loop should be exited and with which result. */
675 drag_result_t result;
677 /* The container that is being dragged or resized, or NULL if this is a
678 * drag of the resize handle. */
681 /* The dimensions of con when the loop was started. */
684 /* The callback to invoke after every pointer movement. */
687 /* User data pointer for callback. */
691 static bool drain_drag_events(EV_P, struct drag_x11_cb *dragloop) {
692 xcb_motion_notify_event_t *last_motion_notify = NULL;
693 xcb_generic_event_t *event;
695 while ((event = xcb_poll_for_event(conn)) != NULL) {
696 if (event->response_type == 0) {
697 xcb_generic_error_t *error = (xcb_generic_error_t *)event;
698 DLOG("X11 Error received (probably harmless)! sequence 0x%x, error_code = %d\n",
699 error->sequence, error->error_code);
704 /* Strip off the highest bit (set if the event is generated) */
705 int type = (event->response_type & 0x7F);
708 case XCB_BUTTON_RELEASE:
709 dragloop->result = DRAG_SUCCESS;
713 DLOG("A key was pressed during drag, reverting changes.\n");
714 dragloop->result = DRAG_REVERT;
715 handle_event(type, event);
718 case XCB_UNMAP_NOTIFY: {
719 xcb_unmap_notify_event_t *unmap_event = (xcb_unmap_notify_event_t *)event;
720 Con *con = con_by_window_id(unmap_event->window);
723 DLOG("UnmapNotify for window 0x%08x (container %p)\n", unmap_event->window, con);
725 if (con_get_workspace(con) == con_get_workspace(focused)) {
726 DLOG("UnmapNotify for a managed window on the current workspace, aborting\n");
727 dragloop->result = DRAG_ABORT;
731 handle_event(type, event);
735 case XCB_MOTION_NOTIFY:
736 /* motion_notify events are saved for later */
737 FREE(last_motion_notify);
738 last_motion_notify = (xcb_motion_notify_event_t *)event;
742 DLOG("Passing to original handler\n");
743 handle_event(type, event);
747 if (last_motion_notify != (xcb_motion_notify_event_t *)event)
750 if (dragloop->result != DRAGGING) {
751 ev_break(EV_A_ EVBREAK_ONE);
752 if (dragloop->result == DRAG_SUCCESS) {
753 /* Ensure motion notify events are handled. */
756 free(last_motion_notify);
762 if (last_motion_notify == NULL) {
766 /* Ensure that we are either dragging the resize handle (con is NULL) or that the
767 * container still exists. The latter might not be true, e.g., if the window closed
768 * for any reason while the user was dragging it. */
769 if (!dragloop->con || con_exists(dragloop->con)) {
772 &(dragloop->old_rect),
773 last_motion_notify->root_x,
774 last_motion_notify->root_y,
777 FREE(last_motion_notify);
780 return dragloop->result != DRAGGING;
783 static void xcb_drag_prepare_cb(EV_P_ ev_prepare *w, int revents) {
784 struct drag_x11_cb *dragloop = (struct drag_x11_cb *)w->data;
785 while (!drain_drag_events(EV_A, dragloop)) {
786 /* repeatedly drain events: draining might produce additional ones */
791 * This function grabs your pointer and keyboard and lets you drag stuff around
792 * (borders). Every time you move your mouse, an XCB_MOTION_NOTIFY event will
793 * be received and the given callback will be called with the parameters
794 * specified (client, border on which the click originally was), the original
795 * rect of the client, the event and the new coordinates (x, y).
798 drag_result_t drag_pointer(Con *con, const xcb_button_press_event_t *event, xcb_window_t confine_to,
799 border_t border, int cursor, callback_t callback, const void *extra) {
800 xcb_cursor_t xcursor = (cursor && xcursor_supported) ? xcursor_get_cursor(cursor) : XCB_NONE;
802 /* Grab the pointer */
803 xcb_grab_pointer_cookie_t cookie;
804 xcb_grab_pointer_reply_t *reply;
805 xcb_generic_error_t *error;
807 cookie = xcb_grab_pointer(conn,
808 false, /* get all pointer events specified by the following mask */
809 root, /* grab the root window */
810 XCB_EVENT_MASK_BUTTON_RELEASE | XCB_EVENT_MASK_POINTER_MOTION, /* which events to let through */
811 XCB_GRAB_MODE_ASYNC, /* pointer events should continue as normal */
812 XCB_GRAB_MODE_ASYNC, /* keyboard mode */
813 confine_to, /* confine_to = in which window should the cursor stay */
814 xcursor, /* possibly display a special cursor */
817 if ((reply = xcb_grab_pointer_reply(conn, cookie, &error)) == NULL) {
818 ELOG("Could not grab pointer (error_code = %d)\n", error->error_code);
825 /* Grab the keyboard */
826 xcb_grab_keyboard_cookie_t keyb_cookie;
827 xcb_grab_keyboard_reply_t *keyb_reply;
829 keyb_cookie = xcb_grab_keyboard(conn,
830 false, /* get all keyboard events */
831 root, /* grab the root window */
833 XCB_GRAB_MODE_ASYNC, /* continue processing pointer events as normal */
834 XCB_GRAB_MODE_ASYNC /* keyboard mode */
837 if ((keyb_reply = xcb_grab_keyboard_reply(conn, keyb_cookie, &error)) == NULL) {
838 ELOG("Could not grab keyboard (error_code = %d)\n", error->error_code);
840 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
846 /* Go into our own event loop */
847 struct drag_x11_cb loop = {
850 .callback = callback,
853 ev_prepare *prepare = &loop.prepare;
855 loop.old_rect = con->rect;
856 ev_prepare_init(prepare, xcb_drag_prepare_cb);
857 prepare->data = &loop;
858 main_set_x11_cb(false);
859 ev_prepare_start(main_loop, prepare);
861 ev_loop(main_loop, 0);
863 ev_prepare_stop(main_loop, prepare);
864 main_set_x11_cb(true);
866 xcb_ungrab_keyboard(conn, XCB_CURRENT_TIME);
867 xcb_ungrab_pointer(conn, XCB_CURRENT_TIME);
874 * Repositions the CT_FLOATING_CON to have the coordinates specified by
875 * newrect, but only if the coordinates are not out-of-bounds. Also reassigns
876 * the floating con to a different workspace if this move was across different
880 bool floating_reposition(Con *con, Rect newrect) {
881 /* Sanity check: Are the new coordinates on any output? If not, we
882 * ignore that request. */
883 if (!output_containing_rect(newrect)) {
884 ELOG("No output found at destination coordinates. Not repositioning.\n");
890 floating_maybe_reassign_ws(con);
892 /* If this is a scratchpad window, don't auto center it from now on. */
893 if (con->scratchpad_state == SCRATCHPAD_FRESH)
894 con->scratchpad_state = SCRATCHPAD_CHANGED;
901 * Sets size of the CT_FLOATING_CON to specified dimensions. Might limit the
902 * actual size with regard to size constraints taken from user settings.
903 * Additionally, the dimensions may be upscaled until they're divisible by the
904 * window's size hints.
907 void floating_resize(Con *floating_con, int x, int y) {
908 DLOG("floating resize to %dx%d px\n", x, y);
909 Rect *rect = &floating_con->rect;
910 Con *focused_con = con_descend_focused(floating_con);
911 if (focused_con->window == NULL) {
912 DLOG("No window is focused. Not resizing.\n");
915 int wi = focused_con->window->width_increment;
916 int hi = focused_con->window->height_increment;
920 rect->width += (wi - 1 - rect->width) % wi;
922 rect->height += (hi - 1 - rect->height) % hi;
924 floating_check_size(floating_con);
926 /* If this is a scratchpad window, don't auto center it from now on. */
927 if (floating_con->scratchpad_state == SCRATCHPAD_FRESH)
928 floating_con->scratchpad_state = SCRATCHPAD_CHANGED;
932 * Fixes the coordinates of the floating window whenever the window gets
933 * reassigned to a different output (or when the output’s rect changes).
936 void floating_fix_coordinates(Con *con, Rect *old_rect, Rect *new_rect) {
937 DLOG("Fixing coordinates of floating window %p (rect (%d, %d), %d x %d)\n",
938 con, con->rect.x, con->rect.y, con->rect.width, con->rect.height);
939 DLOG("old_rect = (%d, %d), %d x %d\n",
940 old_rect->x, old_rect->y, old_rect->width, old_rect->height);
941 DLOG("new_rect = (%d, %d), %d x %d\n",
942 new_rect->x, new_rect->y, new_rect->width, new_rect->height);
943 /* First we get the x/y coordinates relative to the x/y coordinates
944 * of the output on which the window is on */
945 int32_t rel_x = con->rect.x - old_rect->x + (int32_t)(con->rect.width / 2);
946 int32_t rel_y = con->rect.y - old_rect->y + (int32_t)(con->rect.height / 2);
947 /* Then we calculate a fraction, for example 0.63 for a window
948 * which is at y = 1212 of a 1920 px high output */
949 DLOG("rel_x = %d, rel_y = %d, fraction_x = %f, fraction_y = %f, output->w = %d, output->h = %d\n",
950 rel_x, rel_y, (double)rel_x / old_rect->width, (double)rel_y / old_rect->height,
951 old_rect->width, old_rect->height);
952 /* Here we have to multiply at first. Or we will lose precision when not compiled with -msse2 */
953 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);
954 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);
955 DLOG("Resulting coordinates: x = %d, y = %d\n", con->rect.x, con->rect.y);