ewmh.c

   1 /*
   2  * ewmh.c - EWMH support functions
   3  *
   4  * Copyright © 2007-2009 Julien Danjou <julien@danjou.info>
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  */
  21
  22 #include <sys/types.h>
  23 #include <unistd.h>
  24
  25 #include <xcb/xcb.h>
  26 #include <xcb/xcb_atom.h>
  27
  28 #include "ewmh.h"
  29 #include "tag.h"
  30 #include "screen.h"
  31 #include "client.h"
  32 #include "widget.h"
  33 #include "wibox.h"
  34 #include "common/atoms.h"
  35 #include "common/buffer.h"
  36 #include "common/xutil.h"
  37
  38 #define _NET_WM_STATE_REMOVE 0
  39 #define _NET_WM_STATE_ADD 1
  40 #define _NET_WM_STATE_TOGGLE 2
  41
  42 /** Update the desktop geometry.
  43  * \param phys_screen The physical screen id.
  44  */
  45 static void
  46 ewmh_update_desktop_geometry(int phys_screen)
  47 {
  48     area_t geom = screen_area_get(&globalconf.screens.tab[phys_screen],
  49                                   NULL,
  50                                   false);
  51     uint32_t sizes[] = { geom.width, geom.height };
  52
  53     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
  54                         xutil_screen_get(globalconf.connection, phys_screen)->root,
  55                         _NET_DESKTOP_GEOMETRY, CARDINAL, 32, countof(sizes), sizes);
  56 }
  57
  58 void
  59 ewmh_init(int phys_screen)
  60 {
  61     xcb_window_t father;
  62     xcb_screen_t *xscreen = xutil_screen_get(globalconf.connection, phys_screen);
  63     xcb_atom_t atom[] =
  64     {
  65         _NET_SUPPORTED,
  66         _NET_SUPPORTING_WM_CHECK,
  67         _NET_STARTUP_ID,
  68         _NET_CLIENT_LIST,
  69         _NET_CLIENT_LIST_STACKING,
  70         _NET_NUMBER_OF_DESKTOPS,
  71         _NET_CURRENT_DESKTOP,
  72         _NET_DESKTOP_NAMES,
  73         _NET_ACTIVE_WINDOW,
  74         _NET_WORKAREA,
  75         _NET_DESKTOP_GEOMETRY,
  76         _NET_CLOSE_WINDOW,
  77         _NET_WM_NAME,
  78         _NET_WM_STRUT_PARTIAL,
  79         _NET_WM_ICON_NAME,
  80         _NET_WM_VISIBLE_ICON_NAME,
  81         _NET_WM_DESKTOP,
  82         _NET_WM_WINDOW_TYPE,
  83         _NET_WM_WINDOW_TYPE_DESKTOP,
  84         _NET_WM_WINDOW_TYPE_DOCK,
  85         _NET_WM_WINDOW_TYPE_TOOLBAR,
  86         _NET_WM_WINDOW_TYPE_MENU,
  87         _NET_WM_WINDOW_TYPE_UTILITY,
  88         _NET_WM_WINDOW_TYPE_SPLASH,
  89         _NET_WM_WINDOW_TYPE_DIALOG,
  90         _NET_WM_WINDOW_TYPE_DROPDOWN_MENU,
  91         _NET_WM_WINDOW_TYPE_POPUP_MENU,
  92         _NET_WM_WINDOW_TYPE_TOOLTIP,
  93         _NET_WM_WINDOW_TYPE_NOTIFICATION,
  94         _NET_WM_WINDOW_TYPE_COMBO,
  95         _NET_WM_WINDOW_TYPE_DND,
  96         _NET_WM_WINDOW_TYPE_NORMAL,
  97         _NET_WM_ICON,
  98         _NET_WM_PID,
  99         _NET_WM_STATE,
 100         _NET_WM_STATE_STICKY,
 101         _NET_WM_STATE_SKIP_TASKBAR,
 102         _NET_WM_STATE_FULLSCREEN,
 103         _NET_WM_STATE_MAXIMIZED_HORZ,
 104         _NET_WM_STATE_MAXIMIZED_VERT,
 105         _NET_WM_STATE_ABOVE,
 106         _NET_WM_STATE_BELOW,
 107         _NET_WM_STATE_MODAL,
 108         _NET_WM_STATE_HIDDEN,
 109         _NET_WM_STATE_DEMANDS_ATTENTION
 110     };
 111     int i;
 112
 113     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 114                         xscreen->root, _NET_SUPPORTED, ATOM, 32,
 115                         countof(atom), atom);
 116
 117     /* create our own window */
 118     father = xcb_generate_id(globalconf.connection);
 119     xcb_create_window(globalconf.connection, xscreen->root_depth,
 120                       father, xscreen->root, -1, -1, 1, 1, 0,
 121                       XCB_COPY_FROM_PARENT, xscreen->root_visual, 0, NULL);
 122
 123     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 124                         xscreen->root, _NET_SUPPORTING_WM_CHECK, WINDOW, 32,
 125                         1, &father);
 126
 127     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 128                         father, _NET_SUPPORTING_WM_CHECK, WINDOW, 32,
 129                         1, &father);
 130
 131     /* set the window manager name */
 132     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 133                         father, _NET_WM_NAME, UTF8_STRING, 8, 7, "awesome");
 134
 135     /* set the window manager PID */
 136     i = getpid();
 137     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 138                         father, _NET_WM_PID, CARDINAL, 32, 1, &i);
 139
 140     ewmh_update_desktop_geometry(phys_screen);
 141 }
 142
 143 void
 144 ewmh_update_net_client_list(int phys_screen)
 145 {
 146     xcb_window_t *wins = p_alloca(xcb_window_t, globalconf.clients.len);
 147
 148     int n = 0;
 149     foreach(_c, globalconf.clients)
 150     {
 151         client_t *c = *_c;
 152         if(c->phys_screen == phys_screen)
 153             wins[n++] = c->win;
 154     }
 155
 156     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 157                         xutil_screen_get(globalconf.connection, phys_screen)->root,
 158                         _NET_CLIENT_LIST, WINDOW, 32, n, wins);
 159 }
 160
 161 /** Set the client list in stacking order, bottom to top.
 162  * \param phys_screen The physical screen id.
 163  */
 164 void
 165 ewmh_update_net_client_list_stacking(int phys_screen)
 166 {
 167     int n = 0;
 168     xcb_window_t *wins = p_alloca(xcb_window_t, globalconf.stack.len);
 169
 170     foreach(client, globalconf.stack)
 171         if((*client)->phys_screen == phys_screen)
 172             wins[n++] = (*client)->win;
 173
 174     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 175                         xutil_screen_get(globalconf.connection, phys_screen)->root,
 176                         _NET_CLIENT_LIST_STACKING, WINDOW, 32, n, wins);
 177 }
 178
 179 void
 180 ewmh_update_net_numbers_of_desktop(int phys_screen)
 181 {
 182     uint32_t count = globalconf.screens.tab[phys_screen].tags.len;
 183
 184     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 185                         xutil_screen_get(globalconf.connection, phys_screen)->root,
 186                         _NET_NUMBER_OF_DESKTOPS, CARDINAL, 32, 1, &count);
 187 }
 188
 189 void
 190 ewmh_update_net_current_desktop(int phys_screen)
 191 {
 192     tag_array_t *tags = &globalconf.screens.tab[phys_screen].tags;
 193     uint32_t count = 0;
 194     tag_t **curtags = tags_get_current( &globalconf.screens.tab[phys_screen]);
 195
 196     while(count < (uint32_t) tags->len && tags->tab[count] != curtags[0])
 197         count++;
 198
 199     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 200                         xutil_screen_get(globalconf.connection, phys_screen)->root,
 201                         _NET_CURRENT_DESKTOP, CARDINAL, 32, 1, &count);
 202
 203     p_delete(&curtags);
 204 }
 205
 206 void
 207 ewmh_update_net_desktop_names(int phys_screen)
 208 {
 209     tag_array_t *tags = &globalconf.screens.tab[phys_screen].tags;
 210     buffer_t buf;
 211
 212     buffer_inita(&buf, BUFSIZ);
 213
 214     for(int i = 0; i < tags->len; i++)
 215     {
 216         buffer_adds(&buf, tags->tab[i]->name);
 217         buffer_addc(&buf, '\0');
 218     }
 219
 220     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 221                         xutil_screen_get(globalconf.connection, phys_screen)->root,
 222                         _NET_DESKTOP_NAMES, UTF8_STRING, 8, buf.len, buf.s);
 223     buffer_wipe(&buf);
 224 }
 225
 226 /** Update the work area space for each physical screen and each desktop.
 227  * \param phys_screen The physical screen id.
 228  */
 229 void
 230 ewmh_update_workarea(int phys_screen)
 231 {
 232     tag_array_t *tags = &globalconf.screens.tab[phys_screen].tags;
 233     uint32_t *area = p_alloca(uint32_t, tags->len * 4);
 234     area_t geom = screen_area_get(&globalconf.screens.tab[phys_screen],
 235                                   &globalconf.screens.tab[phys_screen].wiboxes,
 236                                   true);
 237
 238
 239     for(int i = 0; i < tags->len; i++)
 240     {
 241         area[4 * i + 0] = geom.x;
 242         area[4 * i + 1] = geom.y;
 243         area[4 * i + 2] = geom.width;
 244         area[4 * i + 3] = geom.height;
 245     }
 246
 247     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 248                         xutil_screen_get(globalconf.connection, phys_screen)->root,
 249                         _NET_WORKAREA, CARDINAL, 32, tags->len * 4, area);
 250 }
 251
 252 void
 253 ewmh_update_net_active_window(int phys_screen)
 254 {
 255     xcb_window_t win;
 256
 257     if(globalconf.screen_focus->client_focus
 258        && globalconf.screen_focus->client_focus->phys_screen == phys_screen)
 259         win = globalconf.screen_focus->client_focus->win;
 260     else
 261         win = XCB_NONE;
 262
 263     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 264                         xutil_screen_get(globalconf.connection, phys_screen)->root,
 265                         _NET_ACTIVE_WINDOW, WINDOW, 32, 1, &win);
 266 }
 267
 268 static void
 269 ewmh_process_state_atom(client_t *c, xcb_atom_t state, int set)
 270 {
 271     if(state == _NET_WM_STATE_STICKY)
 272     {
 273         if(set == _NET_WM_STATE_REMOVE)
 274             client_setsticky(c, false);
 275         else if(set == _NET_WM_STATE_ADD)
 276             client_setsticky(c, true);
 277         else if(set == _NET_WM_STATE_TOGGLE)
 278             client_setsticky(c, !c->issticky);
 279     }
 280     else if(state == _NET_WM_STATE_SKIP_TASKBAR)
 281     {
 282         if(set == _NET_WM_STATE_REMOVE)
 283         {
 284             c->skiptb = false;
 285             ewmh_client_update_hints(c);
 286         }
 287         else if(set == _NET_WM_STATE_ADD)
 288         {
 289             c->skiptb = true;
 290             ewmh_client_update_hints(c);
 291         }
 292         else if(set == _NET_WM_STATE_TOGGLE)
 293         {
 294             c->skiptb = !c->skiptb;
 295             ewmh_client_update_hints(c);
 296         }
 297     }
 298     else if(state == _NET_WM_STATE_FULLSCREEN)
 299     {
 300         if(set == _NET_WM_STATE_REMOVE)
 301             client_setfullscreen(c, false);
 302         else if(set == _NET_WM_STATE_ADD)
 303             client_setfullscreen(c, true);
 304         else if(set == _NET_WM_STATE_TOGGLE)
 305             client_setfullscreen(c, !c->isfullscreen);
 306     }
 307     else if(state == _NET_WM_STATE_MAXIMIZED_HORZ)
 308     {
 309         if(set == _NET_WM_STATE_REMOVE)
 310             client_setmaxhoriz(c, false);
 311         else if(set == _NET_WM_STATE_ADD)
 312             client_setmaxhoriz(c, true);
 313         else if(set == _NET_WM_STATE_TOGGLE)
 314             client_setmaxhoriz(c, !c->ismaxhoriz);
 315     }
 316     else if(state == _NET_WM_STATE_MAXIMIZED_VERT)
 317     {
 318         if(set == _NET_WM_STATE_REMOVE)
 319             client_setmaxvert(c, false);
 320         else if(set == _NET_WM_STATE_ADD)
 321             client_setmaxvert(c, true);
 322         else if(set == _NET_WM_STATE_TOGGLE)
 323             client_setmaxvert(c, !c->ismaxvert);
 324     }
 325     else if(state == _NET_WM_STATE_ABOVE)
 326     {
 327         if(set == _NET_WM_STATE_REMOVE)
 328             client_setabove(c, false);
 329         else if(set == _NET_WM_STATE_ADD)
 330             client_setabove(c, true);
 331         else if(set == _NET_WM_STATE_TOGGLE)
 332             client_setabove(c, !c->isabove);
 333     }
 334     else if(state == _NET_WM_STATE_BELOW)
 335     {
 336         if(set == _NET_WM_STATE_REMOVE)
 337             client_setbelow(c, false);
 338         else if(set == _NET_WM_STATE_ADD)
 339             client_setbelow(c, true);
 340         else if(set == _NET_WM_STATE_TOGGLE)
 341             client_setbelow(c, !c->isbelow);
 342     }
 343     else if(state == _NET_WM_STATE_MODAL)
 344     {
 345         if(set == _NET_WM_STATE_REMOVE)
 346             client_setmodal(c, false);
 347         else if(set == _NET_WM_STATE_ADD)
 348             client_setmodal(c, true);
 349         else if(set == _NET_WM_STATE_TOGGLE)
 350             client_setmodal(c, !c->ismodal);
 351     }
 352     else if(state == _NET_WM_STATE_HIDDEN)
 353     {
 354         if(set == _NET_WM_STATE_REMOVE)
 355             client_setminimized(c, false);
 356         else if(set == _NET_WM_STATE_ADD)
 357             client_setminimized(c, true);
 358         else if(set == _NET_WM_STATE_TOGGLE)
 359             client_setminimized(c, !c->isminimized);
 360     }
 361     else if(state == _NET_WM_STATE_DEMANDS_ATTENTION)
 362     {
 363         if(set == _NET_WM_STATE_REMOVE)
 364             client_seturgent(c, false);
 365         else if(set == _NET_WM_STATE_ADD)
 366             client_seturgent(c, true);
 367         else if(set == _NET_WM_STATE_TOGGLE)
 368             client_seturgent(c, !c->isurgent);
 369     }
 370 }
 371
 372 int
 373 ewmh_process_client_message(xcb_client_message_event_t *ev)
 374 {
 375     client_t *c;
 376     int screen;
 377
 378     if(ev->type == _NET_CURRENT_DESKTOP)
 379         for(screen = 0;
 380             screen < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
 381             screen++)
 382         {
 383             if(ev->window == xutil_screen_get(globalconf.connection, screen)->root)
 384                 tag_view_only_byindex(&globalconf.screens.tab[screen], ev->data.data32[0]);
 385         }
 386     else if(ev->type == _NET_CLOSE_WINDOW)
 387     {
 388         if((c = client_getbywin(ev->window)))
 389            client_kill(c);
 390     }
 391     else if(ev->type == _NET_WM_DESKTOP)
 392     {
 393         if((c = client_getbywin(ev->window)))
 394         {
 395             tag_array_t *tags = &c->screen->tags;
 396
 397             if(ev->data.data32[0] == 0xffffffff)
 398                 c->issticky = true;
 399             else
 400                 for(int i = 0; i < tags->len; i++)
 401                     if((int)ev->data.data32[0] == i)
 402                     {
 403                         tag_push(globalconf.L, tags->tab[i]);
 404                         tag_client(c);
 405                     }
 406                     else
 407                         untag_client(c, tags->tab[i]);
 408         }
 409     }
 410     else if(ev->type == _NET_WM_STATE)
 411     {
 412         if((c = client_getbywin(ev->window)))
 413         {
 414             ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[1], ev->data.data32[0]);
 415             if(ev->data.data32[2])
 416                 ewmh_process_state_atom(c, (xcb_atom_t) ev->data.data32[2],
 417                                         ev->data.data32[0]);
 418         }
 419     }
 420     else if(ev->type == _NET_ACTIVE_WINDOW)
 421     {
 422         if((c = client_getbywin(ev->window)))
 423             client_focus(c);
 424     }
 425
 426     return 0;
 427 }
 428
 429 /** Update client EWMH hints.
 430  * \param c The client.
 431  */
 432 void
 433 ewmh_client_update_hints(client_t *c)
 434 {
 435     xcb_atom_t state[10]; /* number of defined state atoms */
 436     int i = 0;
 437
 438     if(c->ismodal)
 439         state[i++] = _NET_WM_STATE_MODAL;
 440     if(c->isfullscreen)
 441         state[i++] = _NET_WM_STATE_FULLSCREEN;
 442     if(c->ismaxvert)
 443         state[i++] = _NET_WM_STATE_MAXIMIZED_VERT;
 444     if(c->ismaxhoriz)
 445         state[i++] = _NET_WM_STATE_MAXIMIZED_HORZ;
 446     if(c->issticky)
 447         state[i++] = _NET_WM_STATE_STICKY;
 448     if(c->skiptb)
 449         state[i++] = _NET_WM_STATE_SKIP_TASKBAR;
 450     if(c->isabove)
 451         state[i++] = _NET_WM_STATE_ABOVE;
 452     if(c->isbelow)
 453         state[i++] = _NET_WM_STATE_BELOW;
 454     if(c->isminimized)
 455         state[i++] = _NET_WM_STATE_HIDDEN;
 456     if(c->isurgent)
 457         state[i++] = _NET_WM_STATE_DEMANDS_ATTENTION;
 458
 459     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 460                         c->win, _NET_WM_STATE, ATOM, 32, i, state);
 461 }
 462
 463 /** Update the client active desktop.
 464  * This is "wrong" since it can be on several tags, but EWMH has a strict view
 465  * of desktop system so just take the first tag.
 466  * \param c The client.
 467  */
 468 void
 469 ewmh_client_update_desktop(client_t *c)
 470 {
 471     int i;
 472     tag_array_t *tags = &c->screen->tags;
 473
 474     for(i = 0; i < tags->len; i++)
 475         if(is_client_tagged(c, tags->tab[i]))
 476         {
 477             xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 478                                 c->win, _NET_WM_DESKTOP, CARDINAL, 32, 1, &i);
 479             return;
 480         }
 481 }
 482
 483 /** Update the client struts.
 484  * \param c The client.
 485  */
 486 void
 487 ewmh_update_client_strut(client_t *c)
 488 {
 489     uint32_t state[] =
 490     {
 491         c->strut.left,
 492         c->strut.right,
 493         c->strut.top,
 494         c->strut.bottom,
 495         c->strut.left_start_y,
 496         c->strut.left_end_y,
 497         c->strut.right_start_y,
 498         c->strut.right_end_y,
 499         c->strut.top_start_x,
 500         c->strut.top_end_x,
 501         c->strut.bottom_start_x,
 502         c->strut.bottom_end_x
 503     };
 504
 505     xcb_change_property(globalconf.connection, XCB_PROP_MODE_REPLACE,
 506                         c->win, _NET_WM_STRUT_PARTIAL, CARDINAL, 32, countof(state), state);
 507 }
 508
 509 void
 510 ewmh_client_check_hints(client_t *c)
 511 {
 512     xcb_atom_t *state;
 513     void *data = NULL;
 514     int desktop;
 515     xcb_get_property_cookie_t c0, c1, c2;
 516     xcb_get_property_reply_t *reply;
 517
 518     /* Send the GetProperty requests which will be processed later */
 519     c0 = xcb_get_property_unchecked(globalconf.connection, false, c->win,
 520                                     _NET_WM_DESKTOP, XCB_GET_PROPERTY_TYPE_ANY, 0, 1);
 521
 522     c1 = xcb_get_property_unchecked(globalconf.connection, false, c->win,
 523                                     _NET_WM_STATE, ATOM, 0, UINT32_MAX);
 524
 525     c2 = xcb_get_property_unchecked(globalconf.connection, false, c->win,
 526                                     _NET_WM_WINDOW_TYPE, ATOM, 0, UINT32_MAX);
 527
 528     reply = xcb_get_property_reply(globalconf.connection, c0, NULL);
 529     if(reply && reply->value_len && (data = xcb_get_property_value(reply)))
 530     {
 531         tag_array_t *tags = &c->screen->tags;
 532
 533         desktop = *(uint32_t *) data;
 534         if(desktop == -1)
 535             c->issticky = true;
 536         else
 537             for(int i = 0; i < tags->len; i++)
 538                 if(desktop == i)
 539                 {
 540                     tag_push(globalconf.L, tags->tab[i]);
 541                     tag_client(c);
 542                 }
 543                 else
 544                     untag_client(c, tags->tab[i]);
 545     }
 546
 547     p_delete(&reply);
 548
 549     reply = xcb_get_property_reply(globalconf.connection, c1, NULL);
 550     if(reply && (data = xcb_get_property_value(reply)))
 551     {
 552         state = (xcb_atom_t *) data;
 553         for(int i = 0; i < xcb_get_property_value_length(reply); i++)
 554             ewmh_process_state_atom(c, state[i], _NET_WM_STATE_ADD);
 555     }
 556
 557     p_delete(&reply);
 558
 559     reply = xcb_get_property_reply(globalconf.connection, c2, NULL);
 560     if(reply && (data = xcb_get_property_value(reply)))
 561     {
 562         state = (xcb_atom_t *) data;
 563         for(int i = 0; i < xcb_get_property_value_length(reply); i++)
 564             if(state[i] == _NET_WM_WINDOW_TYPE_DESKTOP)
 565                 c->type = MAX(c->type, WINDOW_TYPE_DESKTOP);
 566             else if(state[i] == _NET_WM_WINDOW_TYPE_DIALOG)
 567                 c->type = MAX(c->type, WINDOW_TYPE_DIALOG);
 568             else if(state[i] == _NET_WM_WINDOW_TYPE_SPLASH)
 569                 c->type = MAX(c->type, WINDOW_TYPE_SPLASH);
 570             else if(state[i] == _NET_WM_WINDOW_TYPE_DOCK)
 571                 c->type = MAX(c->type, WINDOW_TYPE_DOCK);
 572             else if(state[i] == _NET_WM_WINDOW_TYPE_MENU)
 573                 c->type = MAX(c->type, WINDOW_TYPE_MENU);
 574             else if(state[i] == _NET_WM_WINDOW_TYPE_TOOLBAR)
 575                 c->type = MAX(c->type, WINDOW_TYPE_TOOLBAR);
 576             else if(state[i] == _NET_WM_WINDOW_TYPE_UTILITY)
 577                 c->type = MAX(c->type, WINDOW_TYPE_UTILITY);
 578
 579             if(c->type != WINDOW_TYPE_NORMAL
 580                && c->type != WINDOW_TYPE_DESKTOP
 581                && !c->transient_for)
 582                 client_setabove(c, true);
 583     }
 584
 585     p_delete(&reply);
 586 }
 587
 588 /** Process the WM strut of a client.
 589  * \param c The client.
 590  */
 591 void
 592 ewmh_process_client_strut(client_t *c, xcb_get_property_reply_t *strut_r)
 593 {
 594     void *data;
 595     xcb_get_property_reply_t *mstrut_r = NULL;
 596
 597     if(!strut_r)
 598     {
 599         xcb_get_property_cookie_t strut_q = xcb_get_property_unchecked(globalconf.connection, false, c->win,
 600                                                                        _NET_WM_STRUT_PARTIAL, CARDINAL, 0, 12);
 601         strut_r = mstrut_r = xcb_get_property_reply(globalconf.connection, strut_q, NULL);
 602     }
 603
 604     if(strut_r
 605        && strut_r->value_len
 606        && (data = xcb_get_property_value(strut_r)))
 607     {
 608         uint32_t *strut = data;
 609
 610         if(c->strut.left != strut[0]
 611            || c->strut.right != strut[1]
 612            || c->strut.top != strut[2]
 613            || c->strut.bottom != strut[3]
 614            || c->strut.left_start_y != strut[4]
 615            || c->strut.left_end_y != strut[5]
 616            || c->strut.right_start_y != strut[6]
 617            || c->strut.right_end_y != strut[7]
 618            || c->strut.top_start_x != strut[8]
 619            || c->strut.top_end_x != strut[9]
 620            || c->strut.bottom_start_x != strut[10]
 621            || c->strut.bottom_end_x != strut[11])
 622         {
 623             c->strut.left = strut[0];
 624             c->strut.right = strut[1];
 625             c->strut.top = strut[2];
 626             c->strut.bottom = strut[3];
 627             c->strut.left_start_y = strut[4];
 628             c->strut.left_end_y = strut[5];
 629             c->strut.right_start_y = strut[6];
 630             c->strut.right_end_y = strut[7];
 631             c->strut.top_start_x = strut[8];
 632             c->strut.top_end_x = strut[9];
 633             c->strut.bottom_start_x = strut[10];
 634             c->strut.bottom_end_x = strut[11];
 635
 636             client_need_arrange(c);
 637             /* All the wiboxes (may) need to be repositioned. */
 638             wibox_update_positions();
 639
 640             hook_property(client, c, "struts");
 641         }
 642     }
 643
 644     p_delete(&mstrut_r);
 645 }
 646
 647 /** Send request to get NET_WM_ICON (EWMH)
 648  * \param w The window.
 649  * \return The cookie associated with the request.
 650  */
 651 xcb_get_property_cookie_t
 652 ewmh_window_icon_get_unchecked(xcb_window_t w)
 653 {
 654   return xcb_get_property_unchecked(globalconf.connection, false, w,
 655                                     _NET_WM_ICON, CARDINAL, 0, UINT32_MAX);
 656 }
 657
 658 int
 659 ewmh_window_icon_from_reply(xcb_get_property_reply_t *r)
 660 {
 661     uint32_t *data;
 662     uint64_t len;
 663
 664     if(!r || r->type != CARDINAL || r->format != 32 || r->length < 2)
 665         return 0;
 666
 667     data = (uint32_t *) xcb_get_property_value(r);
 668     if (!data)
 669         return 0;
 670
 671     /* Check that the property is as long as it should be, handling integer
 672      * overflow. <uint32_t> times <another uint32_t casted to uint64_t> always
 673      * fits into an uint64_t and thus this multiplication cannot overflow.
 674      */
 675     len = data[0] * (uint64_t) data[1];
 676     if (!data[0] || !data[1] || len > r->length - 2)
 677         return 0;
 678
 679     return image_new_from_argb32(data[0], data[1], data + 2);
 680 }
 681
 682 /** Get NET_WM_ICON.
 683  * \param cookie The cookie.
 684  * \return The number of elements on stack.
 685  */
 686 int
 687 ewmh_window_icon_get_reply(xcb_get_property_cookie_t cookie)
 688 {
 689     xcb_get_property_reply_t *r = xcb_get_property_reply(globalconf.connection, cookie, NULL);
 690     int ret = ewmh_window_icon_from_reply(r);
 691     p_delete(&r);
 692     return ret;
 693 }
 694
 695 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80