src/desktop.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 "bspwm.h"
  29 #include "ewmh.h"
  30 #include "history.h"
  31 #include "monitor.h"
  32 #include "query.h"
  33 #include "tree.h"
  34 #include "window.h"
  35 #include "desktop.h"
  36 #include "subscribe.h"
  37 #include "settings.h"
  38
  39 void focus_desktop(monitor_t *m, desktop_t *d)
  40 {
  41         bool changed = (m != mon || m->desk != d);
  42
  43         focus_monitor(m);
  44
  45         if (m->desk != d) {
  46                 show_desktop(d);
  47                 hide_desktop(m->desk);
  48                 m->desk = d;
  49         }
  50
  51         if (changed) {
  52                 ewmh_update_current_desktop();
  53                 put_status(SBSC_MASK_DESKTOP_FOCUS, "desktop_focus 0x%08X 0x%08X\n", m->id, d->id);
  54         }
  55 }
  56
  57 bool activate_desktop(monitor_t *m, desktop_t *d)
  58 {
  59         if (d != NULL && m == mon) {
  60                 return false;
  61         }
  62
  63         if (d == NULL) {
  64                 d = m->desk;
  65                 if (d == NULL) {
  66                         d = history_last_desktop(m, NULL);
  67                 }
  68                 if (d == NULL) {
  69                         d = m->desk_head;
  70                 }
  71         }
  72
  73         if (d == NULL || d == m->desk) {
  74                 return false;
  75         }
  76
  77         if (m->sticky_count > 0 && m->desk != NULL) {
  78                 transfer_sticky_nodes(m, m->desk, m, d, m->desk->root);
  79         }
  80
  81         show_desktop(d);
  82         hide_desktop(m->desk);
  83
  84         m->desk = d;
  85
  86         history_add(m, d, NULL, false);
  87
  88         put_status(SBSC_MASK_DESKTOP_ACTIVATE, "desktop_activate 0x%08X 0x%08X\n", m->id, d->id);
  89         put_status(SBSC_MASK_REPORT);
  90
  91         return true;
  92 }
  93
  94 bool find_closest_desktop(coordinates_t *ref, coordinates_t *dst, cycle_dir_t dir, desktop_select_t *sel)
  95 {
  96         monitor_t *m = ref->monitor;
  97         desktop_t *d = ref->desktop;
  98         d = (dir == CYCLE_PREV ? d->prev : d->next);
  99
 100 #define HANDLE_BOUNDARIES(m, d)  \
 101         if (d == NULL) { \
 102                 m = (dir == CYCLE_PREV ? m->prev : m->next); \
 103                 if (m == NULL) { \
 104                         m = (dir == CYCLE_PREV ? mon_tail : mon_head); \
 105                 } \
 106                 d = (dir == CYCLE_PREV ? m->desk_tail : m->desk_head); \
 107         }
 108         HANDLE_BOUNDARIES(m, d)
 109
 110         while (d != ref->desktop) {
 111                 coordinates_t loc = {m, d, NULL};
 112                 if (desktop_matches(&loc, ref, sel)) {
 113                         *dst = loc;
 114                         return true;
 115                 }
 116                 d = (dir == CYCLE_PREV ? d->prev : d->next);
 117                 HANDLE_BOUNDARIES(m, d)
 118         }
 119 #undef HANDLE_BOUNDARIES
 120
 121         return false;
 122 }
 123
 124 bool find_any_desktop(coordinates_t *ref, coordinates_t *dst, desktop_select_t *sel)
 125 {
 126         for (monitor_t *m = mon_head; m != NULL; m = m->next) {
 127                 for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
 128                         coordinates_t loc = {m, d, NULL};
 129                         if (desktop_matches(&loc, ref, sel)) {
 130                                 *dst = loc;
 131                                 return true;
 132                         }
 133                 }
 134         }
 135         return false;
 136 }
 137
 138 bool set_layout(monitor_t *m, desktop_t *d, layout_t l)
 139 {
 140         if (d->layout == l) {
 141                 return false;
 142         }
 143
 144         d->layout = l;
 145
 146         handle_presel_feedbacks(m, d);
 147
 148         arrange(m, d);
 149
 150         put_status(SBSC_MASK_DESKTOP_LAYOUT, "desktop_layout 0x%08X 0x%08X %s\n", m->id, d->id, LAYOUT_STR(l));
 151
 152         if (d == m->desk) {
 153                 put_status(SBSC_MASK_REPORT);
 154         }
 155
 156         return true;
 157 }
 158
 159 void handle_presel_feedbacks(monitor_t *m, desktop_t *d)
 160 {
 161         if (m->desk != d) {
 162                 return;
 163         }
 164         if (d->layout == LAYOUT_MONOCLE) {
 165                 hide_presel_feedbacks(m, d, d->root);
 166         } else {
 167                 show_presel_feedbacks(m, d, d->root);
 168         }
 169 }
 170
 171 bool transfer_desktop(monitor_t *ms, monitor_t *md, desktop_t *d, bool follow)
 172 {
 173         if (ms == NULL || md == NULL || d == NULL || ms == md) {
 174                 return false;
 175         }
 176
 177         bool d_was_active = (d == ms->desk);
 178         bool ms_was_focused = (ms == mon);
 179
 180         unlink_desktop(ms, d);
 181
 182         if ((!follow || !d_was_active || !ms_was_focused) && md->desk != NULL) {
 183                 hide_sticky = false;
 184                 hide_desktop(d);
 185                 hide_sticky = true;
 186         }
 187
 188         insert_desktop(md, d);
 189         history_remove(d, NULL, false);
 190
 191         if (d_was_active) {
 192                 if (follow) {
 193                         if (activate_desktop(ms, NULL)) {
 194                                 activate_node(ms, ms->desk, NULL);
 195                         }
 196                         if (ms_was_focused) {
 197                                 focus_node(md, d, d->focus);
 198                         }
 199                 } else {
 200                         if (ms_was_focused) {
 201                                 focus_node(ms, ms->desk, NULL);
 202                         } else if (activate_desktop(ms, NULL)) {
 203                                 activate_node(ms, ms->desk, NULL);
 204                         }
 205                 }
 206         }
 207
 208         if (ms->sticky_count > 0 && d_was_active) {
 209                 if (ms->desk != NULL) {
 210                         transfer_sticky_nodes(md, d, ms, ms->desk, d->root);
 211                 } else {
 212                         ms->sticky_count -= sticky_count(d->root);
 213                         md->sticky_count += sticky_count(d->root);
 214                         if (d != md->desk) {
 215                                 transfer_sticky_nodes(md, d, md, md->desk, d->root);
 216                         }
 217                 }
 218         }
 219
 220         adapt_geometry(&ms->rectangle, &md->rectangle, d->root);
 221         arrange(md, d);
 222
 223         if ((!follow || !d_was_active || !ms_was_focused) && md->desk == d) {
 224                 if (md == mon) {
 225                         focus_node(md, d, d->focus);
 226                 } else {
 227                         activate_node(md, d, d->focus);
 228                 }
 229         }
 230
 231         ewmh_update_wm_desktops();
 232         ewmh_update_desktop_names();
 233         ewmh_update_desktop_viewport();
 234         ewmh_update_current_desktop();
 235
 236         put_status(SBSC_MASK_DESKTOP_TRANSFER, "desktop_transfer 0x%08X 0x%08X 0x%08X\n", ms->id, d->id, md->id);
 237         put_status(SBSC_MASK_REPORT);
 238
 239         return true;
 240 }
 241
 242 desktop_t *make_desktop(const char *name, uint32_t id)
 243 {
 244         desktop_t *d = calloc(1, sizeof(desktop_t));
 245         snprintf(d->name, sizeof(d->name), "%s", name == NULL ? DEFAULT_DESK_NAME : name);
 246         if (id == XCB_NONE) {
 247                 d->id = xcb_generate_id(dpy);
 248         }
 249         d->prev = d->next = NULL;
 250         d->root = d->focus = NULL;
 251         d->layout = LAYOUT_TILED;
 252         d->padding = (padding_t) PADDING;
 253         d->window_gap = window_gap;
 254         d->border_width = border_width;
 255         return d;
 256 }
 257
 258 void rename_desktop(monitor_t *m, desktop_t *d, const char *name)
 259 {
 260
 261         put_status(SBSC_MASK_DESKTOP_RENAME, "desktop_rename 0x%08X 0x%08X %s %s\n", m->id, d->id, d->name, name);
 262
 263         snprintf(d->name, sizeof(d->name), "%s", name);
 264
 265         put_status(SBSC_MASK_REPORT);
 266         ewmh_update_desktop_names();
 267 }
 268
 269 void insert_desktop(monitor_t *m, desktop_t *d)
 270 {
 271         if (m->desk == NULL) {
 272                 m->desk = d;
 273                 m->desk_head = d;
 274                 m->desk_tail = d;
 275         } else {
 276                 m->desk_tail->next = d;
 277                 d->prev = m->desk_tail;
 278                 m->desk_tail = d;
 279         }
 280 }
 281
 282 void add_desktop(monitor_t *m, desktop_t *d)
 283 {
 284         put_status(SBSC_MASK_DESKTOP_ADD, "desktop_add 0x%08X 0x%08X %s\n", m->id, d->id, d->name);
 285
 286         d->border_width = m->border_width;
 287         d->window_gap = m->window_gap;
 288         insert_desktop(m, d);
 289         ewmh_update_number_of_desktops();
 290         ewmh_update_desktop_names();
 291         ewmh_update_desktop_viewport();
 292         ewmh_update_wm_desktops();
 293         put_status(SBSC_MASK_REPORT);
 294 }
 295
 296 desktop_t *find_desktop_in(uint32_t id, monitor_t *m)
 297 {
 298         if (m == NULL) {
 299                 return NULL;
 300         }
 301
 302         for (desktop_t *d = m->desk_head; d != NULL; d = d->next) {
 303                 if (d->id == id) {
 304                         return d;
 305                 }
 306         }
 307
 308         return NULL;
 309 }
 310
 311 void unlink_desktop(monitor_t *m, desktop_t *d)
 312 {
 313         desktop_t *prev = d->prev;
 314         desktop_t *next = d->next;
 315
 316         if (prev != NULL) {
 317                 prev->next = next;
 318         }
 319
 320         if (next != NULL) {
 321                 next->prev = prev;
 322         }
 323
 324         if (m->desk_head == d) {
 325                 m->desk_head = next;
 326         }
 327
 328         if (m->desk_tail == d) {
 329                 m->desk_tail = prev;
 330         }
 331
 332         if (m->desk == d) {
 333                 m->desk = NULL;
 334         }
 335
 336         d->prev = d->next = NULL;
 337 }
 338
 339 void remove_desktop(monitor_t *m, desktop_t *d)
 340 {
 341         put_status(SBSC_MASK_DESKTOP_REMOVE, "desktop_remove 0x%08X 0x%08X\n", m->id, d->id);
 342
 343         remove_node(m, d, d->root);
 344         unlink_desktop(m, d);
 345         history_remove(d, NULL, false);
 346         free(d);
 347
 348         ewmh_update_current_desktop();
 349         ewmh_update_number_of_desktops();
 350         ewmh_update_desktop_names();
 351         ewmh_update_desktop_viewport();
 352
 353         if (mon != NULL && m->desk == NULL) {
 354                 if (m == mon) {
 355                         focus_node(m, NULL, NULL);
 356                 } else {
 357                         activate_desktop(m, NULL);
 358                         if (m->desk != NULL) {
 359                                 activate_node(m, m->desk, m->desk->focus);
 360                         }
 361                 }
 362         }
 363
 364         put_status(SBSC_MASK_REPORT);
 365 }
 366
 367 void merge_desktops(monitor_t *ms, desktop_t *ds, monitor_t *md, desktop_t *dd)
 368 {
 369         if (ds == NULL || dd == NULL || ds == dd) {
 370                 return;
 371         }
 372         /* TODO: Handle sticky nodes. */
 373         transfer_node(ms, ds, ds->root, md, dd, dd->focus, false);
 374 }
 375
 376 bool swap_desktops(monitor_t *m1, desktop_t *d1, monitor_t *m2, desktop_t *d2, bool follow)
 377 {
 378         if (d1 == NULL || d2 == NULL || d1 == d2 ||
 379             (m1->desk == d1 && m1->sticky_count > 0) ||
 380             (m2->desk == d2 && m2->sticky_count > 0)) {
 381                 return false;
 382         }
 383
 384         put_status(SBSC_MASK_DESKTOP_SWAP, "desktop_swap 0x%08X 0x%08X 0x%08X 0x%08X\n", m1->id, d1->id, m2->id, d2->id);
 385
 386         bool d1_was_active = (m1->desk == d1);
 387         bool d2_was_active = (m2->desk == d2);
 388         bool d1_was_focused = (mon->desk == d1);
 389         bool d2_was_focused = (mon->desk == d2);
 390
 391         if (m1 != m2) {
 392                 if (m1->desk == d1) {
 393                         m1->desk = d2;
 394                 }
 395                 if (m1->desk_head == d1) {
 396                         m1->desk_head = d2;
 397                 }
 398                 if (m1->desk_tail == d1) {
 399                         m1->desk_tail = d2;
 400                 }
 401                 if (m2->desk == d2) {
 402                         m2->desk = d1;
 403                 }
 404                 if (m2->desk_head == d2) {
 405                         m2->desk_head = d1;
 406                 }
 407                 if (m2->desk_tail == d2) {
 408                         m2->desk_tail = d1;
 409                 }
 410         } else {
 411                 if (m1->desk == d1) {
 412                         m1->desk = d2;
 413                 } else if (m1->desk == d2) {
 414                         m1->desk = d1;
 415                 }
 416                 if (m1->desk_head == d1) {
 417                         m1->desk_head = d2;
 418                 } else if (m1->desk_head == d2) {
 419                         m1->desk_head = d1;
 420                 }
 421                 if (m1->desk_tail == d1) {
 422                         m1->desk_tail = d2;
 423                 } else if (m1->desk_tail == d2) {
 424                         m1->desk_tail = d1;
 425                 }
 426         }
 427
 428         desktop_t *p1 = d1->prev;
 429         desktop_t *n1 = d1->next;
 430         desktop_t *p2 = d2->prev;
 431         desktop_t *n2 = d2->next;
 432
 433         if (p1 != NULL && p1 != d2) {
 434                 p1->next = d2;
 435         }
 436         if (n1 != NULL && n1 != d2) {
 437                 n1->prev = d2;
 438         }
 439         if (p2 != NULL && p2 != d1) {
 440                 p2->next = d1;
 441         }
 442         if (n2 != NULL && n2 != d1) {
 443                 n2->prev = d1;
 444         }
 445
 446         d1->prev = p2 == d1 ? d2 : p2;
 447         d1->next = n2 == d1 ? d2 : n2;
 448         d2->prev = p1 == d2 ? d1 : p1;
 449         d2->next = n1 == d2 ? d1 : n1;
 450
 451         if (m1 != m2) {
 452                 adapt_geometry(&m1->rectangle, &m2->rectangle, d1->root);
 453                 adapt_geometry(&m2->rectangle, &m1->rectangle, d2->root);
 454                 history_remove(d1, NULL, false);
 455                 history_remove(d2, NULL, false);
 456                 arrange(m1, d2);
 457                 arrange(m2, d1);
 458         }
 459
 460         if (d1_was_active && !d2_was_active) {
 461                 if ((!follow && m1 != m2) || !d1_was_focused) {
 462                         hide_desktop(d1);
 463                 }
 464                 show_desktop(d2);
 465         } else if (!d1_was_active && d2_was_active) {
 466                 show_desktop(d1);
 467                 if ((!follow && m1 != m2) || !d2_was_focused) {
 468                         hide_desktop(d2);
 469                 }
 470         }
 471
 472         if (follow || m1 == m2) {
 473                 if (d1_was_focused) {
 474                         focus_node(m2, d1, d1->focus);
 475                 } else if (d1_was_active) {
 476                         activate_node(m2, d1, d1->focus);
 477                 }
 478
 479                 if (d2_was_focused) {
 480                         focus_node(m1, d2, d2->focus);
 481                 } else if (d2_was_active) {
 482                         activate_node(m1, d2, d2->focus);
 483                 }
 484         } else {
 485                 if (d1_was_focused) {
 486                         focus_node(m1, d2, d2->focus);
 487                 } else if (d1_was_active) {
 488                         activate_node(m1, d2, d2->focus);
 489                 }
 490
 491                 if (d2_was_focused) {
 492                         focus_node(m2, d1, d1->focus);
 493                 } else if (d2_was_active) {
 494                         activate_node(m2, d1, d1->focus);
 495                 }
 496         }
 497
 498         ewmh_update_wm_desktops();
 499         ewmh_update_desktop_names();
 500         ewmh_update_desktop_viewport();
 501         ewmh_update_current_desktop();
 502
 503         put_status(SBSC_MASK_REPORT);
 504
 505         return true;
 506 }
 507
 508 void show_desktop(desktop_t *d)
 509 {
 510         if (d == NULL) {
 511                 return;
 512         }
 513         show_node(d, d->root);
 514 }
 515
 516 void hide_desktop(desktop_t *d)
 517 {
 518         if (d == NULL) {
 519                 return;
 520         }
 521         hide_node(d, d->root);
 522 }
 523
 524 bool is_urgent(desktop_t *d)
 525 {
 526         for (node_t *n = first_extrema(d->root); n != NULL; n = next_leaf(n, d->root)) {
 527                 if (n->client == NULL) {
 528                         continue;
 529                 }
 530                 if (n->client->urgent) {
 531                         return true;
 532                 }
 533         }
 534         return false;
 535 }