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