src/window.c

   1 /* Copyright (c) 2012, Bastien Dejean
   2  * All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions are met:
   6  *
   7  * 1. Redistributions of source code must retain the above copyright notice, this
   8  *    list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright notice,
  10  *    this list of conditions and the following disclaimer in the documentation
  11  *    and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
  14  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  15  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  16  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 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
  20  * ON 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.
  23  */
  24
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 #include <stdbool.h>
  28 #include <string.h>
  29 #include <xcb/shape.h>
  30 #include "bspwm.h"
  31 #include "ewmh.h"
  32 #include "monitor.h"
  33 #include "desktop.h"
  34 #include "query.h"
  35 #include "rule.h"
  36 #include "settings.h"
  37 #include "geometry.h"
  38 #include "pointer.h"
  39 #include "stack.h"
  40 #include "tree.h"
  41 #include "parse.h"
  42 #include "window.h"
  43
  44 void schedule_window(xcb_window_t win)
  45 {
  46         coordinates_t loc;
  47         uint8_t override_redirect = 0;
  48         xcb_get_window_attributes_reply_t *wa = xcb_get_window_attributes_reply(dpy, xcb_get_window_attributes(dpy, win), NULL);
  49
  50         if (wa != NULL) {
  51                 override_redirect = wa->override_redirect;
  52                 free(wa);
  53         }
  54
  55         if (override_redirect || locate_window(win, &loc)) {
  56                 return;
  57         }
  58
  59         /* ignore pending windows */
  60         for (pending_rule_t *pr = pending_rule_head; pr != NULL; pr = pr->next) {
  61                 if (pr->win == win) {
  62                         return;
  63                 }
  64         }
  65
  66         rule_consequence_t *csq = make_rule_consequence();
  67         apply_rules(win, csq);
  68         if (!schedule_rules(win, csq)) {
  69                 manage_window(win, csq, -1);
  70                 free(csq);
  71         }
  72 }
  73
  74 bool manage_window(xcb_window_t win, rule_consequence_t *csq, int fd)
  75 {
  76         monitor_t *m = mon;
  77         desktop_t *d = mon->desk;
  78         node_t *f = mon->desk->focus;
  79
  80         parse_rule_consequence(fd, csq);
  81
  82         if (!ignore_ewmh_struts && ewmh_handle_struts(win)) {
  83                 for (monitor_t *m = mon_head; m != NULL; m = m->next) {
  84                         arrange(m, m->desk);
  85                 }
  86         }
  87
  88         if (!csq->manage) {
  89                 free(csq->layer);
  90                 free(csq->state);
  91                 window_show(win);
  92                 return false;
  93         }
  94
  95         if (csq->node_desc[0] != '\0') {
  96                 coordinates_t ref = {m, d, f};
  97                 coordinates_t trg = {NULL, NULL, NULL};
  98                 if (node_from_desc(csq->node_desc, &ref, &trg) == SELECTOR_OK) {
  99                         m = trg.monitor;
 100                         d = trg.desktop;
 101                         f = trg.node;
 102                 }
 103         } else if (csq->desktop_desc[0] != '\0') {
 104                 coordinates_t ref = {m, d, NULL};
 105                 coordinates_t trg = {NULL, NULL, NULL};
 106                 if (desktop_from_desc(csq->desktop_desc, &ref, &trg) == SELECTOR_OK) {
 107                         m = trg.monitor;
 108                         d = trg.desktop;
 109                         f = trg.desktop->focus;
 110                 }
 111         } else if (csq->monitor_desc[0] != '\0') {
 112                 coordinates_t ref = {m, NULL, NULL};
 113                 coordinates_t trg = {NULL, NULL, NULL};
 114                 if (monitor_from_desc(csq->monitor_desc, &ref, &trg) == SELECTOR_OK) {
 115                         m = trg.monitor;
 116                         d = trg.monitor->desk;
 117                         f = trg.monitor->desk->focus;
 118                 }
 119         }
 120
 121         if (csq->sticky) {
 122                 m = mon;
 123                 d = mon->desk;
 124                 f = mon->desk->focus;
 125         }
 126
 127         if (csq->split_dir[0] != '\0' && f != NULL) {
 128                 direction_t dir;
 129                 if (parse_direction(csq->split_dir, &dir)) {
 130                         presel_dir(m, d, f, dir);
 131                 }
 132         }
 133
 134         if (csq->split_ratio != 0 && f != NULL) {
 135                 presel_ratio(m, d, f, csq->split_ratio);
 136         }
 137
 138         node_t *n = make_node(win);
 139         client_t *c = make_client();
 140         c->border_width = csq->border ? d->border_width : 0;
 141         n->client = c;
 142         initialize_client(n);
 143         initialize_floating_rectangle(n);
 144
 145         if (csq->rect != NULL) {
 146                 c->floating_rectangle = *csq->rect;
 147                 free(csq->rect);
 148         } else if (c->floating_rectangle.x == 0 && c->floating_rectangle.y == 0) {
 149                 csq->center = true;
 150         }
 151
 152         monitor_t *mm = monitor_from_client(c);
 153         embrace_client(mm, c);
 154         adapt_geometry(&mm->rectangle, &m->rectangle, n);
 155
 156         if (csq->center) {
 157                 window_center(m, c);
 158         }
 159
 160         snprintf(c->class_name, sizeof(c->class_name), "%s", csq->class_name);
 161         snprintf(c->instance_name, sizeof(c->instance_name), "%s", csq->instance_name);
 162
 163         if ((csq->state != NULL && (*(csq->state) == STATE_FLOATING || *(csq->state) == STATE_FULLSCREEN)) || csq->hidden) {
 164                 n->vacant = true;
 165         }
 166
 167         f = insert_node(m, d, n, f);
 168         clients_count++;
 169         if (single_monocle && d->layout == LAYOUT_MONOCLE && tiled_count(d->root, true) > 1) {
 170                 set_layout(m, d, d->user_layout, false);
 171         }
 172
 173         n->vacant = false;
 174
 175         put_status(SBSC_MASK_NODE_ADD, "node_add 0x%08X 0x%08X 0x%08X 0x%08X\n", m->id, d->id, f!=NULL?f->id:0, win);
 176
 177         if (f != NULL && f->client != NULL && csq->state != NULL && *(csq->state) == STATE_FLOATING) {
 178                 c->layer = f->client->layer;
 179         }
 180
 181         if (csq->layer != NULL) {
 182                 c->layer = *(csq->layer);
 183         }
 184
 185         if (csq->state != NULL) {
 186                 set_state(m, d, n, *(csq->state));
 187         }
 188
 189         set_hidden(m, d, n, csq->hidden);
 190         set_sticky(m, d, n, csq->sticky);
 191         set_private(m, d, n, csq->private);
 192         set_locked(m, d, n, csq->locked);
 193         set_marked(m, d, n, csq->marked);
 194
 195         arrange(m, d);
 196
 197         uint32_t values[] = {CLIENT_EVENT_MASK | (focus_follows_pointer ? XCB_EVENT_MASK_ENTER_WINDOW : 0)};
 198         xcb_change_window_attributes(dpy, win, XCB_CW_EVENT_MASK, values);
 199         set_window_state(win, XCB_ICCCM_WM_STATE_NORMAL);
 200         window_grab_buttons(win);
 201
 202         if (d == m->desk) {
 203                 show_node(d, n);
 204         } else {
 205                 hide_node(d, n);
 206         }
 207
 208         ewmh_update_client_list(false);
 209         ewmh_set_wm_desktop(n, d);
 210
 211         if (!csq->hidden && csq->focus) {
 212                 if (d == mon->desk || csq->follow) {
 213                         focus_node(m, d, n);
 214                 } else {
 215                         activate_node(m, d, n);
 216                 }
 217         } else {
 218                 stack(d, n, false);
 219                 draw_border(n, false, (m == mon));
 220         }
 221
 222         free(csq->layer);
 223         free(csq->state);
 224
 225         return true;
 226 }
 227
 228 void set_window_state(xcb_window_t win, xcb_icccm_wm_state_t state)
 229 {
 230         long data[] = {state, XCB_NONE};
 231         xcb_change_property(dpy, XCB_PROP_MODE_REPLACE, win, WM_STATE, WM_STATE, 32, 2, data);
 232 }
 233
 234 void unmanage_window(xcb_window_t win)
 235 {
 236         coordinates_t loc;
 237         if (locate_window(win, &loc)) {
 238                 put_status(SBSC_MASK_NODE_REMOVE, "node_remove 0x%08X 0x%08X 0x%08X\n", loc.monitor->id, loc.desktop->id, win);
 239                 remove_node(loc.monitor, loc.desktop, loc.node);
 240                 arrange(loc.monitor, loc.desktop);
 241         } else {
 242                 for (pending_rule_t *pr = pending_rule_head; pr != NULL; pr = pr->next) {
 243                         if (pr->win == win) {
 244                                 remove_pending_rule(pr);
 245                                 return;
 246                         }
 247                 }
 248         }
 249 }
 250
 251 bool is_presel_window(xcb_window_t win)
 252 {
 253         xcb_icccm_get_wm_class_reply_t reply;
 254         bool ret = false;
 255         if (xcb_icccm_get_wm_class_reply(dpy, xcb_icccm_get_wm_class(dpy, win), &reply, NULL) == 1) {
 256                 if (streq(BSPWM_CLASS_NAME, reply.class_name) && streq(PRESEL_FEEDBACK_I, reply.instance_name)) {
 257                         ret = true;
 258                 }
 259                 xcb_icccm_get_wm_class_reply_wipe(&reply);
 260         }
 261         return ret;
 262 }
 263
 264 void initialize_presel_feedback(node_t *n)
 265 {
 266         if (n == NULL || n->presel == NULL || n->presel->feedback != XCB_NONE) {
 267                 return;
 268         }
 269
 270         xcb_window_t win = xcb_generate_id(dpy);
 271         uint32_t mask = XCB_CW_BACK_PIXEL | XCB_CW_SAVE_UNDER;
 272         uint32_t values[] = {get_color_pixel(presel_feedback_color), 1};
 273         xcb_create_window(dpy, XCB_COPY_FROM_PARENT, win, root, 0, 0, 1, 1, 0, XCB_WINDOW_CLASS_INPUT_OUTPUT,
 274                                   XCB_COPY_FROM_PARENT, mask, values);
 275
 276         xcb_icccm_set_wm_class(dpy, win, sizeof(PRESEL_FEEDBACK_IC), PRESEL_FEEDBACK_IC);
 277         /* Make presel window's input shape NULL to pass any input to window below */
 278         xcb_shape_rectangles(dpy, XCB_SHAPE_SO_SET, XCB_SHAPE_SK_INPUT, XCB_CLIP_ORDERING_UNSORTED, win, 0, 0, 0, NULL);
 279         stacking_list_t *s = stack_tail;
 280         while (s != NULL && !IS_TILED(s->node->client)) {
 281                 s = s->prev;
 282         }
 283         if (s != NULL) {
 284                 window_above(win, s->node->id);
 285         }
 286         n->presel->feedback = win;
 287 }
 288
 289 void draw_presel_feedback(monitor_t *m, desktop_t *d, node_t *n)
 290 {
 291         if (n == NULL || n->presel == NULL || d->user_layout == LAYOUT_MONOCLE || !presel_feedback) {
 292                 return;
 293         }
 294
 295         bool exists = (n->presel->feedback != XCB_NONE);
 296         if (!exists) {
 297                 initialize_presel_feedback(n);
 298         }
 299
 300         int gap = gapless_monocle && d->layout == LAYOUT_MONOCLE ? 0 : d->window_gap;
 301         presel_t *p = n->presel;
 302         xcb_rectangle_t rect = n->rectangle;
 303         rect.x = rect.y = 0;
 304         rect.width -= gap;
 305         rect.height -= gap;
 306         xcb_rectangle_t presel_rect = rect;
 307
 308         switch (p->split_dir) {
 309                 case DIR_NORTH:
 310                         presel_rect.height = p->split_ratio * rect.height;
 311                         break;
 312                 case DIR_EAST:
 313                         presel_rect.width = (1 - p->split_ratio) * rect.width;
 314                         presel_rect.x = rect.width - presel_rect.width;
 315                         break;
 316                 case DIR_SOUTH:
 317                         presel_rect.height = (1 - p->split_ratio) * rect.height;
 318                         presel_rect.y = rect.height - presel_rect.height;
 319                         break;
 320                 case DIR_WEST:
 321                         presel_rect.width = p->split_ratio * rect.width;
 322                         break;
 323         }
 324
 325         window_move_resize(p->feedback, n->rectangle.x + presel_rect.x, n->rectangle.y + presel_rect.y,
 326                            presel_rect.width, presel_rect.height);
 327
 328         if (!exists && m->desk == d) {
 329                 window_show(p->feedback);
 330         }
 331 }
 332
 333 void refresh_presel_feedbacks(monitor_t *m, desktop_t *d, node_t *n)
 334 {
 335         if (n == NULL) {
 336                 return;
 337         } else {
 338                 if (n->presel != NULL) {
 339                         draw_presel_feedback(m, d, n);
 340                 }
 341                 refresh_presel_feedbacks(m, d, n->first_child);
 342                 refresh_presel_feedbacks(m, d, n->second_child);
 343         }
 344 }
 345
 346 void show_presel_feedbacks(monitor_t *m, desktop_t *d, node_t *n)
 347 {
 348         if (n == NULL) {
 349                 return;
 350         } else {
 351                 if (n->presel != NULL) {
 352                         window_show(n->presel->feedback);
 353                 }
 354                 show_presel_feedbacks(m, d, n->first_child);
 355                 show_presel_feedbacks(m, d, n->second_child);
 356         }
 357 }
 358
 359 void hide_presel_feedbacks(monitor_t *m, desktop_t *d, node_t *n)
 360 {
 361         if (n == NULL) {
 362                 return;
 363         } else {
 364                 if (n->presel != NULL) {
 365                         window_hide(n->presel->feedback);
 366                 }
 367                 hide_presel_feedbacks(m, d, n->first_child);
 368                 hide_presel_feedbacks(m, d, n->second_child);
 369         }
 370 }
 371
 372 void update_colors(void)
 373 {
 374         for (monitor_t *m = mon_head; m != NULL; m = m->next) {
 375                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
 376                         update_colors_in(d->root, d, m);
 377                 }
 378         }
 379 }
 380
 381 void update_colors_in(node_t *n, desktop_t *d, monitor_t *m)
 382 {
 383         if (n == NULL) {
 384                 return;
 385         } else {
 386                 if (n->presel != NULL) {
 387                         uint32_t pxl = get_color_pixel(presel_feedback_color);
 388                         xcb_change_window_attributes(dpy, n->presel->feedback, XCB_CW_BACK_PIXEL, &pxl);
 389                         if (d == m->desk) {
 390                                 /* hack to induce back pixel refresh */
 391                                 window_hide(n->presel->feedback);
 392                                 window_show(n->presel->feedback);
 393                         }
 394                 }
 395                 if (n == d->focus) {
 396                         draw_border(n, true, (m == mon));
 397                 } else if (n->client != NULL) {
 398                         draw_border(n, false, (m == mon));
 399                 } else {
 400                         update_colors_in(n->first_child, d, m);
 401                         update_colors_in(n->second_child, d, m);
 402                 }
 403         }
 404 }
 405
 406 void draw_border(node_t *n, bool focused_node, bool focused_monitor)
 407 {
 408         if (n == NULL) {
 409                 return;
 410         }
 411
 412         uint32_t border_color_pxl = get_border_color(focused_node, focused_monitor);
 413         for (node_t *f = first_extrema(n); f != NULL; f = next_leaf(f, n)) {
 414                 if (f->client != NULL) {
 415                         window_draw_border(f->id, border_color_pxl);
 416                 }
 417         }
 418 }
 419
 420 void window_draw_border(xcb_window_t win, uint32_t border_color_pxl)
 421 {
 422         xcb_change_window_attributes(dpy, win, XCB_CW_BORDER_PIXEL, &border_color_pxl);
 423 }
 424
 425 void adopt_orphans(void)
 426 {
 427         xcb_query_tree_reply_t *qtr = xcb_query_tree_reply(dpy, xcb_query_tree(dpy, root), NULL);
 428         if (qtr == NULL) {
 429                 return;
 430         }
 431
 432         int len = xcb_query_tree_children_length(qtr);
 433         xcb_window_t *wins = xcb_query_tree_children(qtr);
 434
 435         for (int i = 0; i < len; i++) {
 436                 uint32_t idx;
 437                 xcb_window_t win = wins[i];
 438                 if (xcb_ewmh_get_wm_desktop_reply(ewmh, xcb_ewmh_get_wm_desktop(ewmh, win), &idx, NULL) == 1) {
 439                         schedule_window(win);
 440                 }
 441         }
 442
 443         free(qtr);
 444 }
 445
 446 uint32_t get_border_color(bool focused_node, bool focused_monitor)
 447 {
 448         if (focused_monitor && focused_node) {
 449                 return get_color_pixel(focused_border_color);
 450         } else if (focused_node) {
 451                 return get_color_pixel(active_border_color);
 452         } else {
 453                 return get_color_pixel(normal_border_color);
 454         }
 455 }
 456
 457 void initialize_floating_rectangle(node_t *n)
 458 {
 459         client_t *c = n->client;
 460
 461         xcb_get_geometry_reply_t *geo = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, n->id), NULL);
 462
 463         if (geo != NULL) {
 464                 c->floating_rectangle = (xcb_rectangle_t) {geo->x, geo->y, geo->width, geo->height};
 465         }
 466
 467         free(geo);
 468 }
 469
 470 xcb_rectangle_t get_window_rectangle(node_t *n)
 471 {
 472         client_t *c = n->client;
 473         if (c != NULL) {
 474                 xcb_get_geometry_reply_t *g = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, n->id), NULL);
 475                 if (g != NULL) {
 476                         xcb_rectangle_t rect = (xcb_rectangle_t) {g->x, g->y, g->width, g->height};
 477                         free(g);
 478                         return rect;
 479                 }
 480         }
 481         return (xcb_rectangle_t) {0, 0, screen_width, screen_height};
 482 }
 483
 484 bool move_client(coordinates_t *loc, int dx, int dy)
 485 {
 486         node_t *n = loc->node;
 487
 488         if (n == NULL || n->client == NULL) {
 489                 return false;
 490         }
 491
 492         monitor_t *pm = NULL;
 493
 494         if (IS_TILED(n->client)) {
 495                 if (!grabbing) {
 496                         return false;
 497                 }
 498                 xcb_window_t pwin = XCB_NONE;
 499                 query_pointer(&pwin, NULL);
 500                 if (pwin == n->id) {
 501                         return false;
 502                 }
 503                 coordinates_t dst;
 504                 bool is_managed = (pwin != XCB_NONE && locate_window(pwin, &dst));
 505                 if (is_managed && dst.monitor == loc->monitor && IS_TILED(dst.node->client)) {
 506                         swap_nodes(loc->monitor, loc->desktop, n, loc->monitor, loc->desktop, dst.node, false);
 507                         return true;
 508                 } else {
 509                         if (is_managed && dst.monitor == loc->monitor) {
 510                                 return false;
 511                         } else {
 512                                 xcb_point_t pt = {0, 0};
 513                                 query_pointer(NULL, &pt);
 514                                 pm = monitor_from_point(pt);
 515                         }
 516                 }
 517         } else {
 518                 client_t *c = n->client;
 519                 xcb_rectangle_t rect = c->floating_rectangle;
 520                 int16_t x = rect.x + dx;
 521                 int16_t y = rect.y + dy;
 522
 523                 window_move(n->id, x, y);
 524
 525                 c->floating_rectangle.x = x;
 526                 c->floating_rectangle.y = y;
 527                 if (!grabbing) {
 528                         put_status(SBSC_MASK_NODE_GEOMETRY, "node_geometry 0x%08X 0x%08X 0x%08X %ux%u+%i+%i\n", loc->monitor->id, loc->desktop->id, loc->node->id, rect.width, rect.height, x, y);
 529                 }
 530                 pm = monitor_from_client(c);
 531         }
 532
 533         if (pm == NULL || pm == loc->monitor) {
 534                 return true;
 535         }
 536
 537         transfer_node(loc->monitor, loc->desktop, n, pm, pm->desk, pm->desk->focus, true);
 538         loc->monitor = pm;
 539         loc->desktop = pm->desk;
 540
 541         return true;
 542 }
 543
 544 bool resize_client(coordinates_t *loc, resize_handle_t rh, int dx, int dy, bool relative)
 545 {
 546         node_t *n = loc->node;
 547         if (n == NULL || n->client == NULL || n->client->state == STATE_FULLSCREEN) {
 548                 return false;
 549         }
 550         node_t *horizontal_fence = NULL, *vertical_fence = NULL;
 551         xcb_rectangle_t rect = get_rectangle(NULL, NULL, n);
 552         uint16_t width = rect.width, height = rect.height;
 553         int16_t x = rect.x, y = rect.y;
 554         if (n->client->state == STATE_TILED) {
 555                 if (rh & HANDLE_LEFT) {
 556                         vertical_fence = find_fence(n, DIR_WEST);
 557                 } else if (rh & HANDLE_RIGHT) {
 558                         vertical_fence = find_fence(n, DIR_EAST);
 559                 }
 560                 if (rh & HANDLE_TOP) {
 561                         horizontal_fence = find_fence(n, DIR_NORTH);
 562                 } else if (rh & HANDLE_BOTTOM) {
 563                         horizontal_fence = find_fence(n, DIR_SOUTH);
 564                 }
 565                 if (vertical_fence == NULL && horizontal_fence == NULL) {
 566                         return false;
 567                 }
 568                 if (vertical_fence != NULL) {
 569                         double sr = 0.0;
 570                         if (relative) {
 571                                 sr = vertical_fence->split_ratio + (double) dx / (double) vertical_fence->rectangle.width;
 572                         } else {
 573                                 sr = (double) (dx - vertical_fence->rectangle.x) / (double) vertical_fence->rectangle.width;
 574                         }
 575                         sr = MAX(0, sr);
 576                         sr = MIN(1, sr);
 577                         vertical_fence->split_ratio = sr;
 578                 }
 579                 if (horizontal_fence != NULL) {
 580                         double sr = 0.0;
 581                         if (relative) {
 582                                 sr = horizontal_fence->split_ratio + (double) dy / (double) horizontal_fence->rectangle.height;
 583                         } else {
 584                                 sr = (double) (dy - horizontal_fence->rectangle.y) / (double) horizontal_fence->rectangle.height;
 585                         }
 586                         sr = MAX(0, sr);
 587                         sr = MIN(1, sr);
 588                         horizontal_fence->split_ratio = sr;
 589                 }
 590                 node_t *target_fence = horizontal_fence != NULL ? horizontal_fence : vertical_fence;
 591                 adjust_ratios(target_fence, target_fence->rectangle);
 592                 arrange(loc->monitor, loc->desktop);
 593         } else {
 594                 int w = width, h = height;
 595                 if (relative) {
 596                         w += dx * (rh & HANDLE_LEFT ? -1 : (rh & HANDLE_RIGHT ? 1 : 0));
 597                         h += dy * (rh & HANDLE_TOP ? -1 : (rh & HANDLE_BOTTOM ? 1 : 0));
 598                 } else {
 599                         if (rh & HANDLE_LEFT) {
 600                                 w = x + width - dx;
 601                         } else if (rh & HANDLE_RIGHT) {
 602                                 w = dx - x;
 603                         }
 604                         if (rh & HANDLE_TOP) {
 605                                 h = y + height - dy;
 606                         } else if (rh & HANDLE_BOTTOM) {
 607                                 h = dy - y;
 608                         }
 609                 }
 610                 width = MAX(1, w);
 611                 height = MAX(1, h);
 612                 apply_size_hints(n->client, &width, &height);
 613                 if (rh & HANDLE_LEFT) {
 614                         x += rect.width - width;
 615                 }
 616                 if (rh & HANDLE_TOP) {
 617                         y += rect.height - height;
 618                 }
 619                 n->client->floating_rectangle = (xcb_rectangle_t) {x, y, width, height};
 620                 if (n->client->state == STATE_FLOATING) {
 621                         window_move_resize(n->id, x, y, width, height);
 622
 623                         if (!grabbing) {
 624                                 put_status(SBSC_MASK_NODE_GEOMETRY, "node_geometry 0x%08X 0x%08X 0x%08X %ux%u+%i+%i\n", loc->monitor->id, loc->desktop->id, loc->node->id, width, height, x, y);
 625                         }
 626                 } else {
 627                         arrange(loc->monitor, loc->desktop);
 628                 }
 629         }
 630         return true;
 631 }
 632
 633 /* taken from awesomeWM */
 634 void apply_size_hints(client_t *c, uint16_t *width, uint16_t *height)
 635 {
 636         if (!honor_size_hints) {
 637                 return;
 638         }
 639
 640         int32_t minw = 0, minh = 0;
 641         int32_t basew = 0, baseh = 0, real_basew = 0, real_baseh = 0;
 642
 643         if (c->state == STATE_FULLSCREEN) {
 644                 return;
 645         }
 646
 647         if (c->size_hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE) {
 648                 basew = c->size_hints.base_width;
 649                 baseh = c->size_hints.base_height;
 650                 real_basew = basew;
 651                 real_baseh = baseh;
 652         } else if (c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) {
 653                 /* base size is substituted with min size if not specified */
 654                 basew = c->size_hints.min_width;
 655                 baseh = c->size_hints.min_height;
 656         }
 657
 658         if (c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MIN_SIZE) {
 659                 minw = c->size_hints.min_width;
 660                 minh = c->size_hints.min_height;
 661         } else if (c->size_hints.flags & XCB_ICCCM_SIZE_HINT_BASE_SIZE) {
 662                 /* min size is substituted with base size if not specified */
 663                 minw = c->size_hints.base_width;
 664                 minh = c->size_hints.base_height;
 665         }
 666
 667         /* Handle the size aspect ratio */
 668         if (c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_ASPECT &&
 669             c->size_hints.min_aspect_den > 0 &&
 670             c->size_hints.max_aspect_den > 0 &&
 671             *height > real_baseh &&
 672             *width > real_basew) {
 673                 /* ICCCM mandates:
 674                  * If a base size is provided along with the aspect ratio fields, the base size should be subtracted from the
 675                  * window size prior to checking that the aspect ratio falls in range. If a base size is not provided, nothing
 676                  * should be subtracted from the window size. (The minimum size is not to be used in place of the base size for
 677                  * this purpose.)
 678                  */
 679                 double dx = *width - real_basew;
 680                 double dy = *height - real_baseh;
 681                 double ratio = dx / dy;
 682                 double min = c->size_hints.min_aspect_num / (double) c->size_hints.min_aspect_den;
 683                 double max = c->size_hints.max_aspect_num / (double) c->size_hints.max_aspect_den;
 684
 685                 if (max > 0 && min > 0 && ratio > 0) {
 686                         if (ratio < min) {
 687                                 /* dx is lower than allowed, make dy lower to compensate this (+ 0.5 to force proper rounding). */
 688                                 dy = dx / min + 0.5;
 689                                 *width  = dx + real_basew;
 690                                 *height = dy + real_baseh;
 691                         } else if (ratio > max) {
 692                                 /* dx is too high, lower it (+0.5 for proper rounding) */
 693                                 dx = dy * max + 0.5;
 694                                 *width  = dx + real_basew;
 695                                 *height = dy + real_baseh;
 696                         }
 697                 }
 698         }
 699
 700         /* Handle the minimum size */
 701         *width = MAX(*width, minw);
 702         *height = MAX(*height, minh);
 703
 704         /* Handle the maximum size */
 705         if (c->size_hints.flags & XCB_ICCCM_SIZE_HINT_P_MAX_SIZE)
 706         {
 707                 if (c->size_hints.max_width > 0) {
 708                         *width = MIN(*width, c->size_hints.max_width);
 709                 }
 710                 if (c->size_hints.max_height > 0) {
 711                         *height = MIN(*height, c->size_hints.max_height);
 712                 }
 713         }
 714
 715         /* Handle the size increment */
 716         if (c->size_hints.flags & (XCB_ICCCM_SIZE_HINT_P_RESIZE_INC | XCB_ICCCM_SIZE_HINT_BASE_SIZE) &&
 717             c->size_hints.width_inc > 0 && c->size_hints.height_inc > 0) {
 718                 uint16_t t1 = *width, t2 = *height;
 719                 unsigned_subtract(t1, basew);
 720                 unsigned_subtract(t2, baseh);
 721                 *width -= t1 % c->size_hints.width_inc;
 722                 *height -= t2 % c->size_hints.height_inc;
 723         }
 724 }
 725
 726 void query_pointer(xcb_window_t *win, xcb_point_t *pt)
 727 {
 728         if (motion_recorder.enabled) {
 729                 window_hide(motion_recorder.id);
 730         }
 731
 732         xcb_query_pointer_reply_t *qpr = xcb_query_pointer_reply(dpy, xcb_query_pointer(dpy, root), NULL);
 733
 734         if (qpr != NULL) {
 735                 if (win != NULL) {
 736                         *win = qpr->child;
 737                         xcb_point_t pt = {qpr->root_x, qpr->root_y};
 738                         for (stacking_list_t *s = stack_tail; s != NULL; s = s->prev) {
 739                                 if (!s->node->client->shown || s->node->hidden) {
 740                                         continue;
 741                                 }
 742                                 xcb_rectangle_t rect = get_rectangle(NULL, NULL, s->node);
 743                                 if (is_inside(pt, rect)) {
 744                                         if (s->node->id == qpr->child || is_presel_window(qpr->child)) {
 745                                                 *win = s->node->id;
 746                                         }
 747                                         break;
 748                                 }
 749                         }
 750                 }
 751                 if (pt != NULL) {
 752                         *pt = (xcb_point_t) {qpr->root_x, qpr->root_y};
 753                 }
 754         }
 755
 756         free(qpr);
 757
 758         if (motion_recorder.enabled) {
 759                 window_show(motion_recorder.id);
 760         }
 761 }
 762
 763 void update_motion_recorder(void)
 764 {
 765         xcb_point_t pt;
 766         xcb_window_t win = XCB_NONE;
 767         query_pointer(&win, &pt);
 768         if (win == XCB_NONE) {
 769                 return;
 770         }
 771         monitor_t *m = monitor_from_point(pt);
 772         if (m == NULL) {
 773                 return;
 774         }
 775         desktop_t *d = m->desk;
 776         node_t *n = NULL;
 777         for (n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) {
 778                 if (n->id == win || (n->presel != NULL && n->presel->feedback == win)) {
 779                         break;
 780                 }
 781         }
 782         if ((n != NULL && n != mon->desk->focus) || (n == NULL && m != mon)) {
 783                 enable_motion_recorder(win);
 784         } else {
 785                 disable_motion_recorder();
 786         }
 787 }
 788
 789 void enable_motion_recorder(xcb_window_t win)
 790 {
 791         xcb_get_geometry_reply_t *geo = xcb_get_geometry_reply(dpy, xcb_get_geometry(dpy, win), NULL);
 792         if (geo != NULL) {
 793                 uint16_t width = geo->width + 2 * geo->border_width;
 794                 uint16_t height = geo->height + 2 * geo->border_width;
 795                 window_move_resize(motion_recorder.id, geo->x, geo->y, width, height);
 796                 window_above(motion_recorder.id, win);
 797                 window_show(motion_recorder.id);
 798                 motion_recorder.enabled = true;
 799         }
 800         free(geo);
 801 }
 802
 803 void disable_motion_recorder(void)
 804 {
 805         if (!motion_recorder.enabled) {
 806                 return;
 807         }
 808         window_hide(motion_recorder.id);
 809         motion_recorder.enabled = false;
 810 }
 811
 812 void window_border_width(xcb_window_t win, uint32_t bw)
 813 {
 814         uint32_t values[] = {bw};
 815         xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_BORDER_WIDTH, values);
 816 }
 817
 818 void window_move(xcb_window_t win, int16_t x, int16_t y)
 819 {
 820         uint32_t values[] = {x, y};
 821         xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y, values);
 822 }
 823
 824 void window_resize(xcb_window_t win, uint16_t w, uint16_t h)
 825 {
 826         uint32_t values[] = {w, h};
 827         xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_WIDTH_HEIGHT, values);
 828 }
 829
 830 void window_move_resize(xcb_window_t win, int16_t x, int16_t y, uint16_t w, uint16_t h)
 831 {
 832         uint32_t values[] = {x, y, w, h};
 833         xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_X_Y_WIDTH_HEIGHT, values);
 834 }
 835
 836 void window_center(monitor_t *m, client_t *c)
 837 {
 838         xcb_rectangle_t *r = &c->floating_rectangle;
 839         xcb_rectangle_t a = m->rectangle;
 840         if (r->width >= a.width) {
 841                 r->x = a.x;
 842         } else {
 843                 r->x = a.x + (a.width - r->width) / 2;
 844         }
 845         if (r->height >= a.height) {
 846                 r->y = a.y;
 847         } else {
 848                 r->y = a.y + (a.height - r->height) / 2;
 849         }
 850         r->x -= c->border_width;
 851         r->y -= c->border_width;
 852 }
 853
 854 void window_stack(xcb_window_t w1, xcb_window_t w2, uint32_t mode)
 855 {
 856         if (w2 == XCB_NONE) {
 857                 return;
 858         }
 859         uint16_t mask = XCB_CONFIG_WINDOW_SIBLING | XCB_CONFIG_WINDOW_STACK_MODE;
 860         uint32_t values[] = {w2, mode};
 861         xcb_configure_window(dpy, w1, mask, values);
 862 }
 863
 864 /* Stack w1 above w2 */
 865 void window_above(xcb_window_t w1, xcb_window_t w2)
 866 {
 867         window_stack(w1, w2, XCB_STACK_MODE_ABOVE);
 868 }
 869
 870 /* Stack w1 below w2 */
 871 void window_below(xcb_window_t w1, xcb_window_t w2)
 872 {
 873         window_stack(w1, w2, XCB_STACK_MODE_BELOW);
 874 }
 875
 876 void window_lower(xcb_window_t win)
 877 {
 878         uint32_t values[] = {XCB_STACK_MODE_BELOW};
 879         xcb_configure_window(dpy, win, XCB_CONFIG_WINDOW_STACK_MODE, values);
 880 }
 881
 882 void window_set_visibility(xcb_window_t win, bool visible)
 883 {
 884         uint32_t values_off[] = {ROOT_EVENT_MASK & ~XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY};
 885         uint32_t values_on[] = {ROOT_EVENT_MASK};
 886         xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_off);
 887         if (visible) {
 888                 set_window_state(win, XCB_ICCCM_WM_STATE_NORMAL);
 889                 xcb_map_window(dpy, win);
 890         } else {
 891                 xcb_unmap_window(dpy, win);
 892                 set_window_state(win, XCB_ICCCM_WM_STATE_ICONIC);
 893         }
 894         xcb_change_window_attributes(dpy, root, XCB_CW_EVENT_MASK, values_on);
 895 }
 896
 897 void window_hide(xcb_window_t win)
 898 {
 899         window_set_visibility(win, false);
 900 }
 901
 902 void window_show(xcb_window_t win)
 903 {
 904         window_set_visibility(win, true);
 905 }
 906
 907 void update_input_focus(void)
 908 {
 909         set_input_focus(mon->desk->focus);
 910 }
 911
 912 void set_input_focus(node_t *n)
 913 {
 914         if (n == NULL || n->client == NULL) {
 915                 clear_input_focus();
 916         } else {
 917                 if (n->client->icccm_props.input_hint) {
 918                         xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_PARENT, n->id, XCB_CURRENT_TIME);
 919                 } else if (n->client->icccm_props.take_focus) {
 920                         send_client_message(n->id, ewmh->WM_PROTOCOLS, WM_TAKE_FOCUS);
 921                 }
 922         }
 923 }
 924
 925 void clear_input_focus(void)
 926 {
 927         xcb_set_input_focus(dpy, XCB_INPUT_FOCUS_POINTER_ROOT, root, XCB_CURRENT_TIME);
 928 }
 929
 930 void center_pointer(xcb_rectangle_t r)
 931 {
 932         if (grabbing) {
 933                 return;
 934         }
 935         int16_t cx = r.x + r.width / 2;
 936         int16_t cy = r.y + r.height / 2;
 937         xcb_warp_pointer(dpy, XCB_NONE, root, 0, 0, 0, 0, cx, cy);
 938 }
 939
 940 void get_atom(char *name, xcb_atom_t *atom)
 941 {
 942         xcb_intern_atom_reply_t *reply = xcb_intern_atom_reply(dpy, xcb_intern_atom(dpy, 0, strlen(name), name), NULL);
 943         if (reply != NULL) {
 944                 *atom = reply->atom;
 945         } else {
 946                 *atom = XCB_NONE;
 947         }
 948         free(reply);
 949 }
 950
 951 void set_atom(xcb_window_t win, xcb_atom_t atom, uint32_t value)
 952 {
 953         xcb_change_property(dpy, XCB_PROP_MODE_REPLACE, win, atom, XCB_ATOM_CARDINAL, 32, 1, &value);
 954 }
 955
 956 void send_client_message(xcb_window_t win, xcb_atom_t property, xcb_atom_t value)
 957 {
 958         xcb_client_message_event_t *e = calloc(32, 1);
 959
 960         e->response_type = XCB_CLIENT_MESSAGE;
 961         e->window = win;
 962         e->type = property;
 963         e->format = 32;
 964         e->data.data32[0] = value;
 965         e->data.data32[1] = XCB_CURRENT_TIME;
 966
 967         xcb_send_event(dpy, false, win, XCB_EVENT_MASK_NO_EVENT, (char *) e);
 968         xcb_flush(dpy);
 969         free(e);
 970 }
 971
 972 bool window_exists(xcb_window_t win)
 973 {
 974         xcb_generic_error_t *err;
 975         free(xcb_query_tree_reply(dpy, xcb_query_tree(dpy, win), &err));
 976
 977         if (err != NULL) {
 978                 free(err);
 979                 return false;
 980         }
 981
 982         return true;
 983 }