1 /* * Copyright (c) 2012-2013 Bastien Dejean
4 * Redistribution and use in source and binary forms, with or without modification,
5 * are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright notice, this
8 * list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright notice,
10 * this list of conditions and the following disclaimer in the documentation and/or
11 * other materials provided with the distribution.
13 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
17 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
38 void manage_window(monitor_t *m, desktop_t *d, xcb_window_t win)
41 xcb_get_window_attributes_reply_t *wa = xcb_get_window_attributes_reply(dpy, xcb_get_window_attributes(dpy, win), NULL);
42 uint8_t override_redirect = 0;
45 override_redirect = wa->override_redirect;
49 if (override_redirect || locate_window(win, &loc))
52 bool floating = false, fullscreen = false, locked = false, sticky = false, follow = false, transient = false, takes_focus = true, frame = false, private = false, manage = true;
53 unsigned int tags_field = 0;
54 handle_rules(win, &m, &d, &tags_field, &floating, &fullscreen, &locked, &sticky, &follow, &transient, &takes_focus, &frame, &private, &manage);
57 disable_floating_atom(win);
62 PRINTF("manage %X\n", win);
64 client_t *c = make_client(win);
65 update_floating_rectangle(c);
66 c->tags_field = (tags_field == 0 ? d->tags_field : tags_field);
69 xcb_icccm_get_wm_class_reply_t reply;
70 if (xcb_icccm_get_wm_class_reply(dpy, xcb_icccm_get_wm_class(dpy, win), &reply, NULL) == 1) {
71 snprintf(c->class_name, sizeof(c->class_name), "%s", reply.class_name);
72 xcb_icccm_get_wm_class_reply_wipe(&reply);
78 node_t *n = make_node();
81 insert_node(m, d, n, d->focus);
83 disable_floating_atom(c->window);
84 set_floating(n, floating);
85 set_locked(m, d, n, locked);
86 set_sticky(m, d, n, sticky);
87 set_private(m, d, n, private);
89 if (d->focus != NULL && d->focus->client->fullscreen)
90 set_fullscreen(d->focus, false);
92 set_fullscreen(n, fullscreen);
93 c->transient = transient;
95 tag_node(m, d, n, d, n->client->tags_field);
97 xcb_rectangle_t *frect = &n->client->floating_rectangle;
98 if (frect->x == 0 && frect->y == 0)
99 center(m->rectangle, frect);
100 fit_monitor(m, n->client);
104 bool give_focus = (takes_focus && (d == mon->desk || follow));
106 if (is_visible(d, n)) {
109 else if (takes_focus)
117 uint32_t values[] = {get_event_mask(n->client)};
118 xcb_change_window_attributes(dpy, c->window, XCB_CW_EVENT_MASK, values);
120 if (visible && is_visible(d, n)) {
122 window_show(n->client->window);
124 window_hide(n->client->window);
127 /* the same function is already called in `focus_node` but has no effects on unmapped windows */
129 xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_POINTER_ROOT, win, XCB_CURRENT_TIME);
132 ewmh_set_wm_desktop(n, d);
133 ewmh_update_client_list();
136 void window_draw_border(node_t *n, bool focused_window, bool focused_monitor)
138 if (n == NULL || (n->client->border_width < 1 && !n->client->frame)) {
142 if (n->client->frame) {
143 draw_frame_background(n, focused_window, focused_monitor);
147 xcb_window_t win = n->client->window;
148 uint32_t border_color_pxl = get_border_color(n->client, focused_window, focused_monitor);
150 if (n->split_mode == MODE_AUTOMATIC) {
151 xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXEL, &border_color_pxl);
153 unsigned int border_width = n->client->border_width;
154 uint32_t presel_border_color_pxl;
155 get_color(presel_border_color, win, &presel_border_color_pxl);
157 xcb_rectangle_t actual_rectangle = get_rectangle(n->client);
159 uint16_t width = actual_rectangle.width;
160 uint16_t height = actual_rectangle.height;
162 uint16_t full_width = width + 2 * border_width;
163 uint16_t full_height = height + 2 * border_width;
165 xcb_rectangle_t border_rectangles[] =
167 { width, 0, 2 * border_width, height + 2 * border_width },
168 { 0, height, width + 2 * border_width, 2 * border_width }
171 xcb_rectangle_t *presel_rectangles;
173 uint8_t win_depth = root_depth;
174 xcb_get_geometry_reply_t *geo = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, win), NULL);
176 win_depth = geo->depth;
179 xcb_pixmap_t pixmap = xcb_generate_id(dpy);
180 xcb_create_pixmap(dpy, win_depth, pixmap, win, full_width, full_height);
182 xcb_gcontext_t gc = xcb_generate_id(dpy);
183 xcb_create_gc(dpy, gc, pixmap, 0, NULL);
185 xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &border_color_pxl);
186 xcb_poly_fill_rectangle(dpy, pixmap, gc, LENGTH(border_rectangles), border_rectangles);
188 uint16_t fence = (int16_t) (n->split_ratio * ((n->split_dir == DIR_UP || n->split_dir == DIR_DOWN) ? height : width));
189 presel_rectangles = malloc(2 * sizeof(xcb_rectangle_t));
190 switch (n->split_dir) {
192 presel_rectangles[0] = (xcb_rectangle_t) {width, 0, 2 * border_width, fence};
193 presel_rectangles[1] = (xcb_rectangle_t) {0, height + border_width, full_width, border_width};
196 presel_rectangles[0] = (xcb_rectangle_t) {width, fence + 1, 2 * border_width, height + border_width - (fence + 1)};
197 presel_rectangles[1] = (xcb_rectangle_t) {0, height, full_width, border_width};
200 presel_rectangles[0] = (xcb_rectangle_t) {0, height, fence, 2 * border_width};
201 presel_rectangles[1] = (xcb_rectangle_t) {width + border_width, 0, border_width, full_height};
204 presel_rectangles[0] = (xcb_rectangle_t) {fence + 1, height, width + border_width - (fence + 1), 2 * border_width};
205 presel_rectangles[1] = (xcb_rectangle_t) {width, 0, border_width, full_height};
208 xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &presel_border_color_pxl);
209 xcb_poly_fill_rectangle(dpy, pixmap, gc, 2, presel_rectangles);
210 xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXMAP, &pixmap);
211 free(presel_rectangles);
212 xcb_free_gc(dpy, gc);
213 xcb_free_pixmap(dpy, pixmap);
217 void draw_frame_background(node_t *n, bool focused_window, bool focused_monitor)
222 xcb_window_t win = n->client->window;
223 uint32_t border_color_pxl = get_border_color(n->client, focused_window, focused_monitor);
224 uint32_t opacity = (focused_window ? (focused_monitor ? focused_frame_opacity : active_frame_opacity) : normal_frame_opacity) * 0xffffffff;
225 xcb_change_property(dpy, XCB_PROP_MODE_REPLACE, win, _NET_WM_WINDOW_OPACITY, XCB_ATOM_CARDINAL, 32, 1, &opacity);
226 uint8_t win_depth = root_depth;
227 xcb_get_geometry_reply_t *geo = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, win), NULL);
229 win_depth = geo->depth;
231 xcb_rectangle_t rectangle = get_rectangle(n->client);
232 rectangle.x = rectangle.y = 0;
233 uint16_t width = rectangle.width;
234 uint16_t height = rectangle.height;
235 xcb_pixmap_t pixmap = xcb_generate_id(dpy);
236 xcb_create_pixmap(dpy, win_depth, pixmap, win, width, height);
237 xcb_gcontext_t gc = xcb_generate_id(dpy);
238 xcb_create_gc(dpy, gc, pixmap, 0, NULL);
239 xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &border_color_pxl);
240 xcb_poly_fill_rectangle(dpy, pixmap, gc, 1, &rectangle);
241 if (n->split_mode == MODE_MANUAL) {
242 xcb_rectangle_t presel_rectangle = rectangle;
243 uint32_t presel_border_color_pxl;
244 get_color(presel_border_color, win, &presel_border_color_pxl);
245 xcb_change_gc(dpy, gc, XCB_GC_FOREGROUND, &presel_border_color_pxl);
246 switch (n->split_dir) {
248 presel_rectangle.height = n->split_ratio * rectangle.height;
251 presel_rectangle.width = (1 - n->split_ratio) * rectangle.width;
252 presel_rectangle.x = rectangle.width - presel_rectangle.width;
255 presel_rectangle.height = (1 - n->split_ratio) * rectangle.height;
256 presel_rectangle.y = rectangle.height - presel_rectangle.height;
259 presel_rectangle.width = n->split_ratio * rectangle.width;
262 xcb_poly_fill_rectangle(dpy, pixmap, gc, 1, &presel_rectangle);
264 xcb_copy_area(dpy, pixmap, win, gc, 0, 0, 0, 0, width, height);
265 xcb_free_gc(dpy, gc);
266 xcb_free_pixmap(dpy, pixmap);
269 pointer_state_t *make_pointer_state(void)
271 pointer_state_t *p = malloc(sizeof(pointer_state_t));
274 p->node = p->vertical_fence = p->horizontal_fence = NULL;
276 p->window = XCB_NONE;
280 void center(xcb_rectangle_t a, xcb_rectangle_t *b)
282 if (b->width < a.width)
283 b->x = a.x + (a.width - b->width) / 2;
284 if (b->height < a.height)
285 b->y = a.y + (a.height - b->height) / 2;
288 bool contains(xcb_rectangle_t a, xcb_rectangle_t b)
290 return (a.x <= b.x && (a.x + a.width) >= (b.x + b.width)
291 && a.y <= b.y && (a.y + a.height) >= (b.y + b.height));
294 bool is_inside(monitor_t *m, xcb_point_t pt)
296 xcb_rectangle_t r = m->rectangle;
297 return (r.x <= pt.x && pt.x < (r.x + r.width)
298 && r.y <= pt.y && pt.y < (r.y + r.height));
301 xcb_rectangle_t get_rectangle(client_t *c)
304 return c->tiled_rectangle;
306 return c->floating_rectangle;
309 void get_side_handle(client_t *c, direction_t dir, xcb_point_t *pt)
311 xcb_rectangle_t rect = get_rectangle(c);
314 pt->x = rect.x + rect.width;
315 pt->y = rect.y + (rect.height / 2);
318 pt->x = rect.x + (rect.width / 2);
319 pt->y = rect.y + rect.height;
323 pt->y = rect.y + (rect.height / 2);
326 pt->x = rect.x + (rect.width / 2);
332 monitor_t *monitor_from_point(xcb_point_t pt)
334 for (monitor_t *m = mon_head; m != NULL; m = m->next)
335 if (is_inside(m, pt))
340 monitor_t *underlying_monitor(client_t *c)
342 xcb_point_t pt = (xcb_point_t) {c->floating_rectangle.x, c->floating_rectangle.y};
343 return monitor_from_point(pt);
346 void adopt_orphans(void)
348 xcb_query_tree_reply_t *qtr = xcb_query_tree_reply(dpy, xcb_query_tree(dpy, root), NULL);
352 PUTS("adopt orphans");
354 int len = xcb_query_tree_children_length(qtr);
355 xcb_window_t *wins = xcb_query_tree_children(qtr);
356 for (int i = 0; i < len; i++) {
358 xcb_window_t win = wins[i];
359 if (xcb_ewmh_get_wm_desktop_reply(ewmh, xcb_ewmh_get_wm_desktop(ewmh, win), &idx, NULL) == 1) {
361 if (ewmh_locate_desktop(idx, &loc))
362 manage_window(loc.monitor, loc.desktop, win);
364 manage_window(mon, mon->desk, win);
370 void window_close(node_t *n)
372 if (n == NULL || n->client->locked)
375 PRINTF("close window %X\n", n->client->window);
377 send_client_message(n->client->window, ewmh->WM_PROTOCOLS, WM_DELETE_WINDOW);
380 void window_kill(monitor_t *m, desktop_t *d, node_t *n)
385 xcb_window_t win = n->client->window;
386 PRINTF("kill window %X\n", win);
388 xcb_kill_client(dpy, win);
389 remove_node(m, d, n);
392 void set_fullscreen(node_t *n, bool value)
394 if (n == NULL || n->client->frame || n->client->fullscreen == value)
397 client_t *c = n->client;
399 PRINTF("fullscreen %X: %s\n", c->window, BOOLSTR(value));
401 c->fullscreen = value;
403 ewmh_wm_state_add(c, ewmh->_NET_WM_STATE_FULLSCREEN);
405 ewmh_wm_state_remove(c, ewmh->_NET_WM_STATE_FULLSCREEN);
409 void set_floating(node_t *n, bool value)
411 if (n == NULL || n->client->transient || n->client->fullscreen || n->client->frame || n->client->floating == value)
414 PRINTF("floating %X: %s\n", n->client->window, BOOLSTR(value));
416 n->split_mode = MODE_AUTOMATIC;
417 client_t *c = n->client;
418 c->floating = n->vacant = value;
419 update_vacant_state(n->parent);
422 enable_floating_atom(c->window);
425 disable_floating_atom(c->window);
432 void set_locked(monitor_t *m, desktop_t *d, node_t *n, bool value)
434 if (n == NULL || n->client->locked == value)
437 client_t *c = n->client;
439 PRINTF("set locked %X: %s\n", c->window, BOOLSTR(value));
442 window_draw_border(n, d->focus == n, m == mon);
445 void set_sticky(monitor_t *m, desktop_t *d, node_t *n, bool value)
447 if (n == NULL || n->client->sticky == value)
450 client_t *c = n->client;
452 PRINTF("set sticky %X: %s\n", c->window, BOOLSTR(value));
455 transfer_node(m, d, n, m, m->desk, m->desk->focus);
459 ewmh_wm_state_add(c, ewmh->_NET_WM_STATE_STICKY);
462 ewmh_wm_state_remove(c, ewmh->_NET_WM_STATE_STICKY);
466 window_draw_border(n, d->focus == n, m == mon);
469 void set_private(monitor_t *m, desktop_t *d, node_t *n, bool value)
471 if (n == NULL || n->client->private == value)
474 client_t *c = n->client;
476 PRINTF("set private %X: %s\n", c->window, BOOLSTR(value));
479 update_privacy_level(n, value);
480 window_draw_border(n, d->focus == n, m == mon);
483 void set_urgency(monitor_t *m, desktop_t *d, node_t *n, bool value)
485 if (value && mon->desk->focus == n)
487 n->client->urgent = value;
488 window_draw_border(n, d->focus == n, m == mon);
492 void set_floating_atom(xcb_window_t win, uint32_t value)
494 if (!apply_floating_atom)
496 set_atom(win, _BSPWM_FLOATING_WINDOW, value);
499 void enable_floating_atom(xcb_window_t win)
501 set_floating_atom(win, 1);
504 void disable_floating_atom(xcb_window_t win)
506 set_floating_atom(win, 0);
509 uint32_t get_border_color(client_t *c, bool focused_window, bool focused_monitor)
516 if (focused_monitor && focused_window) {
518 get_color(focused_locked_border_color, c->window, &pxl);
520 get_color(focused_sticky_border_color, c->window, &pxl);
522 get_color(focused_private_border_color, c->window, &pxl);
524 get_color(focused_border_color, c->window, &pxl);
525 } else if (focused_window) {
527 get_color(urgent_border_color, c->window, &pxl);
529 get_color(active_locked_border_color, c->window, &pxl);
531 get_color(active_sticky_border_color, c->window, &pxl);
533 get_color(active_private_border_color, c->window, &pxl);
535 get_color(active_border_color, c->window, &pxl);
538 get_color(urgent_border_color, c->window, &pxl);
540 get_color(normal_locked_border_color, c->window, &pxl);
542 get_color(normal_sticky_border_color, c->window, &pxl);
544 get_color(normal_private_border_color, c->window, &pxl);
546 get_color(normal_border_color, c->window, &pxl);
552 void update_floating_rectangle(client_t *c)
554 xcb_get_geometry_reply_t *geo = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, c->window), NULL);
557 c->floating_rectangle = (xcb_rectangle_t) {geo->x, geo->y, geo->width, geo->height};
559 c->floating_rectangle = (xcb_rectangle_t) {0, 0, 32, 24};
565 void query_pointer(xcb_window_t *win, xcb_point_t *pt)
567 window_lower(motion_recorder);
569 xcb_query_pointer_reply_t *qpr = xcb_query_pointer_reply(dpy, xcb_query_pointer(dpy, root), NULL);
575 *pt = (xcb_point_t) {qpr->root_x, qpr->root_y};
579 window_raise(motion_recorder);
582 bool window_focus(xcb_window_t win)
585 if (locate_window(win, &loc)) {
586 if (loc.node != mon->desk->focus)
587 focus_node(loc.monitor, loc.desktop, loc.node);
593 void window_border_width(xcb_window_t win, uint32_t bw)
595 uint32_t values[] = {bw};
596 xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_BORDER_WIDTH, values);
599 void window_move(xcb_window_t win, int16_t x, int16_t y)
601 uint32_t values[] = {x, y};
602 xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y, values);
605 void window_resize(xcb_window_t win, uint16_t w, uint16_t h)
607 uint32_t values[] = {w, h};
608 xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_WIDTH_HEIGHT, values);
611 void window_move_resize(xcb_window_t win, int16_t x, int16_t y, uint16_t w, uint16_t h)
613 uint32_t values[] = {x, y, w, h};
614 xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y_WIDTH_HEIGHT, values);
617 void window_raise(xcb_window_t win)
619 uint32_t values[] = {XCB_STACK_MODE_ABOVE};
620 xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
623 void window_stack(xcb_window_t w1, xcb_window_t w2, uint32_t mode)
627 uint16_t mask = XCB_CONFIG_WINDOW_SIBLING | XCB_CONFIG_WINDOW_STACK_MODE;
628 uint32_t values[] = {w2, mode};
629 xcb_configure_window(dpy, w1, mask, values);
632 void window_above(xcb_window_t w1, xcb_window_t w2)
634 window_stack(w1, w2, XCB_STACK_MODE_ABOVE);
637 void window_below(xcb_window_t w1, xcb_window_t w2)
639 window_stack(w1, w2, XCB_STACK_MODE_BELOW);
642 void window_lower(xcb_window_t win)
644 uint32_t values[] = {XCB_STACK_MODE_BELOW};
645 xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
648 void window_set_visibility(xcb_window_t win, bool visible)
650 uint32_t values_off[] = {ROOT_EVENT_MASK & ~XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY};
651 uint32_t values_on[] = {ROOT_EVENT_MASK};
652 xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_off);
654 xcb_map_window(dpy, win);
656 xcb_unmap_window(dpy, win);
657 xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_on);
660 void window_hide(xcb_window_t win)
662 PRINTF("window hide %X\n", win);
663 window_set_visibility(win, false);
666 void window_show(xcb_window_t win)
668 PRINTF("window show %X\n", win);
669 window_set_visibility(win, true);
672 void toggle_visibility(void)
677 for (monitor_t *m = mon_head; m != NULL; m = m->next)
678 for (node_t *n = first_extrema(m->desk->root); n != NULL; n = next_leaf(n, m->desk->root))
679 if (is_visible(m->desk, n))
680 window_set_visibility(n->client->window, visible);
682 update_input_focus();
685 void enable_motion_recorder(void)
687 PUTS("enable motion recorder");
688 window_raise(motion_recorder);
689 window_show(motion_recorder);
692 void disable_motion_recorder(void)
694 PUTS("disable motion recorder");
695 window_hide(motion_recorder);
698 void update_motion_recorder(void)
700 xcb_get_geometry_reply_t *geo = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, root), NULL);
703 window_resize(motion_recorder, geo->width, geo->height);
704 PRINTF("update motion recorder size: %ux%u\n", geo->width, geo->height);
710 void update_input_focus(void)
712 set_input_focus(mon->desk->focus);
715 void set_input_focus(node_t *n)
720 if (n->client->icccm_focus)
721 send_client_message(n->client->window, ewmh->WM_PROTOCOLS, WM_TAKE_FOCUS);
722 xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_POINTER_ROOT, n->client->window, XCB_CURRENT_TIME);
726 void clear_input_focus(void)
728 xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
731 void center_pointer(monitor_t *m)
733 int16_t cx = m->rectangle.x + m->rectangle.width / 2;
734 int16_t cy = m->rectangle.y + m->rectangle.height / 2;
735 window_lower(motion_recorder);
736 xcb_warp_pointer(dpy, XCB_NONE, root, 0, 0, 0, 0, cx, cy);
737 window_raise(motion_recorder);
740 void get_atom(char *name, xcb_atom_t *atom)
742 xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen(name), name), NULL);
750 void set_atom(xcb_window_t win, xcb_atom_t atom, uint32_t value)
752 xcb_change_property(dpy, XCB_PROP_MODE_REPLACE, win, atom, XCB_ATOM_CARDINAL, 32, 1, &value);
755 bool has_proto(xcb_atom_t atom, xcb_icccm_get_wm_protocols_reply_t *protocols)
757 for (uint32_t i = 0; i < protocols->atoms_len; i++)
758 if (protocols->atoms[i] == atom)
763 void send_client_message(xcb_window_t win, xcb_atom_t property, xcb_atom_t value)
765 xcb_client_message_event_t e;
767 e.response_type = XCB_CLIENT_MESSAGE;
772 e.data.data32[0] = value;
773 e.data.data32[1] = XCB_CURRENT_TIME;
775 xcb_send_event(dpy, false, win, XCB_EVENT_MASK_NO_EVENT, (char *) &e);
778 uint32_t get_event_mask(client_t *c)
780 return CLIENT_EVENT_MASK | (c->frame ? XCB_EVENT_MASK_EXPOSURE : 0) | (focus_follows_pointer ? XCB_EVENT_MASK_ENTER_WINDOW : 0);