openbox/screen.c

   1 #include "openbox.h"
   2 #include "dock.h"
   3 #include "xerror.h"
   4 #include "prop.h"
   5 #include "startup.h"
   6 #include "timer.h"
   7 #include "config.h"
   8 #include "screen.h"
   9 #include "client.h"
  10 #include "frame.h"
  11 #include "focus.h"
  12 #include "dispatch.h"
  13 #include "extensions.h"
  14 #include "render/render.h"
  15
  16 #ifdef USE_LIBSN
  17 #  define SN_API_NOT_YET_FROZEN
  18 #  include <libsn/sn.h>
  19 #endif
  20
  21 #include <X11/Xlib.h>
  22 #ifdef HAVE_UNISTD_H
  23 #  include <sys/types.h>
  24 #  include <unistd.h>
  25 #endif
  26
  27 /*! The event mask to grab on the root window */
  28 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
  29                         EnterWindowMask | LeaveWindowMask | \
  30                         SubstructureNotifyMask | SubstructureRedirectMask | \
  31                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  32
  33 guint    screen_num_desktops;
  34 guint    screen_num_monitors;
  35 guint    screen_desktop;
  36 Size     screen_physical_size;
  37 gboolean screen_showing_desktop;
  38 DesktopLayout screen_desktop_layout;
  39 char   **screen_desktop_names;
  40 Window   screen_support_win;
  41
  42 static Rect  **area; /* array of desktop holding array of xinerama areas */
  43 static Rect  *monitor_area;
  44
  45 #ifdef USE_LIBSN
  46 static SnMonitorContext *sn_context;
  47 static int sn_busy_cnt;
  48 static ObTimer *sn_timer;
  49
  50 static void sn_event_func(SnMonitorEvent *event, void *data);
  51 #endif
  52
  53 static void set_root_cursor();
  54
  55 static gboolean replace_wm()
  56 {
  57     char *wm_sn;
  58     Atom wm_sn_atom;
  59     Window current_wm_sn_owner;
  60     Time timestamp;
  61
  62     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
  63     wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
  64
  65     current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
  66     if (current_wm_sn_owner) {
  67         if (!ob_replace_wm) {
  68             g_message("A window manager is already running on screen %d",
  69                       ob_screen);
  70             return FALSE;
  71         }
  72         xerror_set_ignore(TRUE);
  73         xerror_occured = FALSE;
  74
  75         /* We want to find out when the current selection owner dies */
  76         XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
  77         XSync(ob_display, FALSE);
  78
  79         xerror_set_ignore(FALSE);
  80         if (xerror_occured)
  81             current_wm_sn_owner = None;
  82     }
  83
  84     {
  85         /* Generate a timestamp */
  86         XEvent event;
  87
  88         XSelectInput(ob_display, screen_support_win, PropertyChangeMask);
  89
  90         XChangeProperty(ob_display, screen_support_win,
  91                         prop_atoms.wm_class, prop_atoms.string,
  92                         8, PropModeAppend, NULL, 0);
  93         XWindowEvent(ob_display, screen_support_win,
  94                      PropertyChangeMask, &event);
  95
  96         XSelectInput(ob_display, screen_support_win, NoEventMask);
  97
  98         timestamp = event.xproperty.time;
  99     }
 100
 101     XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
 102                        timestamp);
 103
 104     if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
 105         g_message("Could not acquire window manager selection on screen %d",
 106                   ob_screen);
 107         return FALSE;
 108     }
 109
 110     /* Wait for old window manager to go away */
 111     if (current_wm_sn_owner) {
 112       XEvent event;
 113       gulong wait = 0;
 114       const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
 115
 116       while (wait < timeout) {
 117           if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
 118                                 StructureNotifyMask, &event) &&
 119               event.type == DestroyNotify)
 120               break;
 121           g_usleep(G_USEC_PER_SEC / 10);
 122           wait += G_USEC_PER_SEC / 10;
 123       }
 124
 125       if (wait >= timeout) {
 126           g_message("Timeout expired while waiting for the current WM to die "
 127                     "on screen %d", ob_screen);
 128           return FALSE;
 129       }
 130     }
 131
 132     /* Send client message indicating that we are now the WM */
 133     prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
 134                  timestamp, wm_sn_atom, 0, 0, SubstructureNotifyMask);
 135
 136
 137     return TRUE;
 138 }
 139
 140 gboolean screen_annex()
 141 {
 142     XSetWindowAttributes attrib;
 143     pid_t pid;
 144     gint i, num_support;
 145     guint32 *supported;
 146
 147     /* create the netwm support window */
 148     attrib.override_redirect = TRUE;
 149     screen_support_win = XCreateWindow(ob_display,
 150                                        RootWindow(ob_display, ob_screen),
 151                                        -100, -100, 1, 1, 0,
 152                                        CopyFromParent, InputOutput,
 153                                        CopyFromParent,
 154                                        CWOverrideRedirect, &attrib);
 155     XMapRaised(ob_display, screen_support_win);
 156
 157     if (!replace_wm()) {
 158         XDestroyWindow(ob_display, screen_support_win);
 159         return FALSE;
 160     }
 161
 162     xerror_set_ignore(TRUE);
 163     xerror_occured = FALSE;
 164     XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
 165                  ROOT_EVENTMASK);
 166     xerror_set_ignore(FALSE);
 167     if (xerror_occured) {
 168         g_message("A window manager is already running on screen %d",
 169                   ob_screen);
 170
 171         XDestroyWindow(ob_display, screen_support_win);
 172         return FALSE;
 173     }
 174
 175
 176     g_message("Managing screen %d", ob_screen);
 177
 178     set_root_cursor();
 179
 180     /* set the OPENBOX_PID hint */
 181     pid = getpid();
 182     PROP_SET32(RootWindow(ob_display, ob_screen),
 183                openbox_pid, cardinal, pid);
 184
 185     /* set supporting window */
 186     PROP_SET32(RootWindow(ob_display, ob_screen),
 187                net_supporting_wm_check, window, screen_support_win);
 188
 189     /* set properties on the supporting window */
 190     PROP_SETS(screen_support_win, net_wm_name, "Openbox");
 191     PROP_SET32(screen_support_win, net_supporting_wm_check,
 192                window, screen_support_win);
 193
 194     /* set the _NET_SUPPORTED_ATOMS hint */
 195     num_support = 61;
 196     i = 0;
 197     supported = g_new(guint32, num_support);
 198     supported[i++] = prop_atoms.net_current_desktop;
 199     supported[i++] = prop_atoms.net_number_of_desktops;
 200     supported[i++] = prop_atoms.net_desktop_geometry;
 201     supported[i++] = prop_atoms.net_desktop_viewport;
 202     supported[i++] = prop_atoms.net_active_window;
 203     supported[i++] = prop_atoms.net_workarea;
 204     supported[i++] = prop_atoms.net_client_list;
 205     supported[i++] = prop_atoms.net_client_list_stacking;
 206     supported[i++] = prop_atoms.net_desktop_names;
 207     supported[i++] = prop_atoms.net_close_window;
 208     supported[i++] = prop_atoms.net_desktop_layout;
 209     supported[i++] = prop_atoms.net_showing_desktop;
 210     supported[i++] = prop_atoms.net_wm_name;
 211     supported[i++] = prop_atoms.net_wm_visible_name;
 212     supported[i++] = prop_atoms.net_wm_icon_name;
 213     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 214     supported[i++] = prop_atoms.net_wm_desktop;
 215     supported[i++] = prop_atoms.net_wm_strut;
 216     supported[i++] = prop_atoms.net_wm_window_type;
 217     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 218     supported[i++] = prop_atoms.net_wm_window_type_dock;
 219     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 220     supported[i++] = prop_atoms.net_wm_window_type_menu;
 221     supported[i++] = prop_atoms.net_wm_window_type_utility;
 222     supported[i++] = prop_atoms.net_wm_window_type_splash;
 223     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 224     supported[i++] = prop_atoms.net_wm_window_type_normal;
 225     supported[i++] = prop_atoms.net_wm_allowed_actions;
 226     supported[i++] = prop_atoms.net_wm_action_move;
 227     supported[i++] = prop_atoms.net_wm_action_resize;
 228     supported[i++] = prop_atoms.net_wm_action_minimize;
 229     supported[i++] = prop_atoms.net_wm_action_shade;
 230     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 231     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 232     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 233     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 234     supported[i++] = prop_atoms.net_wm_action_close;
 235     supported[i++] = prop_atoms.net_wm_state;
 236     supported[i++] = prop_atoms.net_wm_state_modal;
 237     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 238     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 239     supported[i++] = prop_atoms.net_wm_state_shaded;
 240     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 241     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 242     supported[i++] = prop_atoms.net_wm_state_hidden;
 243     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 244     supported[i++] = prop_atoms.net_wm_state_above;
 245     supported[i++] = prop_atoms.net_wm_state_below;
 246     supported[i++] = prop_atoms.net_moveresize_window;
 247     supported[i++] = prop_atoms.net_wm_moveresize;
 248     supported[i++] = prop_atoms.net_wm_moveresize_size_topleft;
 249     supported[i++] = prop_atoms.net_wm_moveresize_size_top;
 250     supported[i++] = prop_atoms.net_wm_moveresize_size_topright;
 251     supported[i++] = prop_atoms.net_wm_moveresize_size_right;
 252     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomright;
 253     supported[i++] = prop_atoms.net_wm_moveresize_size_bottom;
 254     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomleft;
 255     supported[i++] = prop_atoms.net_wm_moveresize_size_left;
 256     supported[i++] = prop_atoms.net_wm_moveresize_move;
 257     supported[i++] = prop_atoms.net_wm_moveresize_size_keyboard;
 258     supported[i++] = prop_atoms.net_wm_moveresize_move_keyboard;
 259     g_assert(i == num_support);
 260 /*
 261   supported[] = prop_atoms.net_wm_action_stick;
 262 */
 263
 264     PROP_SETA32(RootWindow(ob_display, ob_screen),
 265                 net_supported, atom, supported, num_support);
 266     g_free(supported);
 267
 268     return TRUE;
 269 }
 270
 271 void screen_startup()
 272 {
 273     GSList *it;
 274     guint i;
 275
 276     /* get the initial size */
 277     screen_resize();
 278
 279     /* set the names */
 280     screen_desktop_names = g_new(char*,
 281                                  g_slist_length(config_desktops_names) + 1);
 282     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 283         screen_desktop_names[i] = it->data; /* dont strdup */
 284     screen_desktop_names[i] = NULL;
 285     PROP_SETSS(RootWindow(ob_display, ob_screen),
 286                net_desktop_names, screen_desktop_names);
 287     g_free(screen_desktop_names); /* dont free the individual strings */
 288     screen_desktop_names = NULL;
 289
 290     screen_num_desktops = 0;
 291     screen_set_num_desktops(config_desktops_num);
 292     if (startup_desktop >= screen_num_desktops)
 293         startup_desktop = 0;
 294     screen_desktop = startup_desktop;
 295     screen_set_desktop(startup_desktop);
 296
 297     /* don't start in showing-desktop mode */
 298     screen_showing_desktop = FALSE;
 299     PROP_SET32(RootWindow(ob_display, ob_screen),
 300                net_showing_desktop, cardinal, screen_showing_desktop);
 301
 302     screen_update_layout();
 303
 304 #ifdef USE_LIBSN
 305     sn_context = sn_monitor_context_new(ob_sn_display, ob_screen,
 306                                         sn_event_func, NULL, NULL);
 307     sn_busy_cnt = 0;
 308 #endif
 309 }
 310
 311 void screen_shutdown()
 312 {
 313     Rect **r;
 314
 315     XSelectInput(ob_display, RootWindow(ob_display, ob_screen), NoEventMask);
 316
 317     /* we're not running here no more! */
 318     PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
 319     /* not without us */
 320     PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
 321     /* don't keep this mode */
 322     PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
 323
 324     XDestroyWindow(ob_display, screen_support_win);
 325
 326     g_strfreev(screen_desktop_names);
 327     for (r = area; *r; ++r)
 328         g_free(*r);
 329     g_free(area);
 330 }
 331
 332 void screen_resize()
 333 {
 334     static int oldw = 0, oldh = 0;
 335     int w, h;
 336     GList *it;
 337     guint32 geometry[2];
 338
 339     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 340     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 341
 342     if (w == oldw && h == oldh) return;
 343
 344     oldw = w; oldh = h;
 345
 346     /* Set the _NET_DESKTOP_GEOMETRY hint */
 347     screen_physical_size.width = geometry[0] = w;
 348     screen_physical_size.height = geometry[1] = h;
 349     PROP_SETA32(RootWindow(ob_display, ob_screen),
 350                 net_desktop_geometry, cardinal, geometry, 2);
 351
 352     if (ob_state() == OB_STATE_STARTING)
 353         return;
 354
 355     dock_configure();
 356     screen_update_areas();
 357
 358     for (it = client_list; it; it = it->next)
 359         client_move_onscreen(it->data);
 360 }
 361
 362 void screen_set_num_desktops(guint num)
 363 {
 364     guint i, old;
 365     guint32 *viewport;
 366     GList *it;
 367
 368     g_assert(num > 0);
 369
 370     old = screen_num_desktops;
 371     screen_num_desktops = num;
 372     PROP_SET32(RootWindow(ob_display, ob_screen),
 373                net_number_of_desktops, cardinal, num);
 374
 375     /* set the viewport hint */
 376     viewport = g_new0(guint32, num * 2);
 377     PROP_SETA32(RootWindow(ob_display, ob_screen),
 378                 net_desktop_viewport, cardinal, viewport, num * 2);
 379     g_free(viewport);
 380
 381     /* the number of rows/columns will differ */
 382     screen_update_layout();
 383
 384     /* may be some unnamed desktops that we need to fill in with names */
 385     screen_update_desktop_names();
 386
 387     /* update the focus lists */
 388     /* free our lists for the desktops which have disappeared */
 389     for (i = num; i < old; ++i)
 390         g_list_free(focus_order[i]);
 391     /* realloc the array */
 392     focus_order = g_renew(GList*, focus_order, num);
 393     /* set the new lists to be empty */
 394     for (i = old; i < num; ++i)
 395         focus_order[i] = NULL;
 396
 397     /* move windows on desktops that will no longer exist! */
 398     for (it = client_list; it != NULL; it = it->next) {
 399         ObClient *c = it->data;
 400         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
 401             client_set_desktop(c, num - 1, FALSE);
 402     }
 403
 404     /* change our struts/area to match (after moving windows) */
 405     screen_update_areas();
 406
 407     dispatch_ob(Event_Ob_NumDesktops, num, old);
 408
 409     /* change our desktop if we're on one that no longer exists! */
 410     if (screen_desktop >= screen_num_desktops)
 411         screen_set_desktop(num - 1);
 412 }
 413
 414 void screen_set_desktop(guint num)
 415 {
 416     GList *it;
 417     guint old;
 418     XEvent e;
 419
 420     g_assert(num < screen_num_desktops);
 421
 422     old = screen_desktop;
 423     screen_desktop = num;
 424     PROP_SET32(RootWindow(ob_display, ob_screen),
 425                net_current_desktop, cardinal, num);
 426
 427     if (old == num) return;
 428
 429     g_message("Moving to desktop %d", num+1);
 430
 431     /* show windows before hiding the rest to lessen the enter/leave events */
 432
 433     /* show windows from top to bottom */
 434     for (it = stacking_list; it != NULL; it = it->next) {
 435         if (WINDOW_IS_CLIENT(it->data)) {
 436             ObClient *c = it->data;
 437             if (!c->frame->visible && client_should_show(c))
 438                 frame_show(c->frame);
 439         }
 440     }
 441
 442     /* hide windows from bottom to top */
 443     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 444         if (WINDOW_IS_CLIENT(it->data)) {
 445             ObClient *c = it->data;
 446             if (c->frame->visible && !client_should_show(c))
 447                 frame_hide(c->frame);
 448         }
 449     }
 450
 451     /* focus the last focused window on the desktop, and ignore enter events
 452        from the switch so it doesnt mess with the focus */
 453     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 454 #ifdef DEBUG_FOCUS
 455     g_message("switch fallback");
 456 #endif
 457     focus_fallback(OB_FOCUS_FALLBACK_DESKTOP);
 458 #ifdef DEBUG_FOCUS
 459     g_message("/switch fallback");
 460 #endif
 461
 462     dispatch_ob(Event_Ob_Desktop, num, old);
 463 }
 464
 465 void screen_update_layout()
 466 {
 467     ObOrientation orient;
 468     ObCorner corner;
 469     guint rows;
 470     guint cols;
 471     guint32 *data;
 472     guint num;
 473     gboolean valid = FALSE;
 474
 475     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
 476                     net_desktop_layout, cardinal, &data, &num)) {
 477         if (num == 3 || num == 4) {
 478
 479             if (data[0] == prop_atoms.net_wm_orientation_vert)
 480                 orient = OB_ORIENTATION_VERT;
 481             else if (data[0] == prop_atoms.net_wm_orientation_horz)
 482                 orient = OB_ORIENTATION_HORZ;
 483             else
 484                 goto screen_update_layout_bail;
 485
 486             if (num < 4)
 487                 corner = OB_CORNER_TOPLEFT;
 488             else {
 489                 if (data[3] == prop_atoms.net_wm_topright)
 490                     corner = OB_CORNER_TOPRIGHT;
 491                 else if (data[3] == prop_atoms.net_wm_bottomright)
 492                     corner = OB_CORNER_BOTTOMRIGHT;
 493                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 494                     corner = OB_CORNER_BOTTOMLEFT;
 495                 else
 496                     goto screen_update_layout_bail;
 497             }
 498
 499             /* fill in a zero rows/columns */
 500             if ((data[1] == 0 && data[2] == 0) || /* both 0's is bad data.. */
 501                 (data[1] != 0 && data[2] != 0)) { /* no 0's is bad data.. */
 502                 goto screen_update_layout_bail;
 503             } else {
 504                 if (data[1] == 0) {
 505                     data[1] = (screen_num_desktops +
 506                                screen_num_desktops % data[2]) / data[2];
 507                 } else if (data[2] == 0) {
 508                     data[2] = (screen_num_desktops +
 509                                screen_num_desktops % data[1]) / data[1];
 510                 }
 511                 cols = data[1];
 512                 rows = data[2];
 513             }
 514
 515             /* bounds checking */
 516             if (orient == OB_ORIENTATION_HORZ) {
 517                 rows = MIN(rows, screen_num_desktops);
 518                 cols = MIN(cols, ((screen_num_desktops +
 519                                      (screen_num_desktops % rows)) / rows));
 520             } else {
 521                 cols = MIN(cols, screen_num_desktops);
 522                 rows = MIN(rows, ((screen_num_desktops +
 523                                      (screen_num_desktops % cols)) / cols));
 524             }
 525
 526             valid = TRUE;
 527         }
 528     screen_update_layout_bail:
 529         g_free(data);
 530     }
 531
 532     if (!valid) {
 533         /* defaults */
 534         orient = OB_ORIENTATION_HORZ;
 535         corner = OB_CORNER_TOPLEFT;
 536         rows = 1;
 537         cols = screen_num_desktops;
 538     }
 539
 540     screen_desktop_layout.orientation = orient;
 541     screen_desktop_layout.start_corner = corner;
 542     screen_desktop_layout.rows = rows;
 543     screen_desktop_layout.columns = cols;
 544 }
 545
 546 void screen_update_desktop_names()
 547 {
 548     guint i;
 549
 550     /* empty the array */
 551     g_strfreev(screen_desktop_names);
 552     screen_desktop_names = NULL;
 553
 554     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
 555                    net_desktop_names, utf8, &screen_desktop_names))
 556         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 557     else
 558         i = 0;
 559     if (i <= screen_num_desktops) {
 560         screen_desktop_names = g_renew(char*, screen_desktop_names,
 561                                        screen_num_desktops + 1);
 562         screen_desktop_names[screen_num_desktops] = NULL;
 563         for (; i < screen_num_desktops; ++i)
 564             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 565     }
 566 }
 567
 568 void screen_show_desktop(gboolean show)
 569 {
 570     GList *it;
 571
 572     if (show == screen_showing_desktop) return; /* no change */
 573
 574     screen_showing_desktop = show;
 575
 576     if (show) {
 577         /* bottom to top */
 578         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 579             if (WINDOW_IS_CLIENT(it->data)) {
 580                 ObClient *client = it->data;
 581                 if (client->frame->visible && !client_should_show(client))
 582                     frame_hide(client->frame);
 583             }
 584         }
 585     } else {
 586         /* top to bottom */
 587         for (it = stacking_list; it != NULL; it = it->next) {
 588             if (WINDOW_IS_CLIENT(it->data)) {
 589                 ObClient *client = it->data;
 590                 if (!client->frame->visible && client_should_show(client))
 591                     frame_show(client->frame);
 592             }
 593         }
 594     }
 595
 596     if (show) {
 597         /* focus desktop */
 598         for (it = focus_order[screen_desktop]; it; it = it->next)
 599             if (((ObClient*)it->data)->type == OB_CLIENT_TYPE_DESKTOP &&
 600                 client_focus(it->data))
 601                 break;
 602     } else {
 603         focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 604     }
 605
 606     show = !!show; /* make it boolean */
 607     PROP_SET32(RootWindow(ob_display, ob_screen),
 608                net_showing_desktop, cardinal, show);
 609
 610     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 611 }
 612
 613 void screen_install_colormap(ObClient *client, gboolean install)
 614 {
 615     XWindowAttributes wa;
 616
 617     if (client == NULL) {
 618         if (install)
 619             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 620         else
 621             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 622     } else {
 623         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 624             wa.colormap != None) {
 625             xerror_set_ignore(TRUE);
 626             if (install)
 627                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 628             else
 629                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 630             xerror_set_ignore(FALSE);
 631         }
 632     }
 633 }
 634
 635 void screen_update_areas()
 636 {
 637     guint i, x;
 638     guint32 *dims;
 639     Rect **old_area = area;
 640     Rect **rit;
 641     GList *it;
 642
 643     g_free(monitor_area);
 644     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
 645
 646     if (area) {
 647         for (i = 0; area[i]; ++i)
 648             g_free(area[i]);
 649         g_free(area);
 650     }
 651
 652     area = g_new(Rect*, screen_num_desktops + 2);
 653     for (i = 0; i < screen_num_desktops + 1; ++i)
 654         area[i] = g_new(Rect, screen_num_monitors + 1);
 655     area[i] = NULL;
 656
 657     dims = g_new(guint32, 4 * screen_num_desktops);
 658
 659     rit = old_area;
 660     for (i = 0; i < screen_num_desktops + 1; ++i) {
 661         Strut s;
 662         int l, r, t, b;
 663
 664         /* calc the xinerama areas */
 665         for (x = 0; x < screen_num_monitors; ++x) {
 666             area[i][x] = monitor_area[x];
 667             if (x == 0) {
 668                 l = monitor_area[x].x;
 669                 t = monitor_area[x].y;
 670                 r = monitor_area[x].x + monitor_area[x].width - 1;
 671                 b = monitor_area[x].y + monitor_area[x].height - 1;
 672             } else {
 673                 l = MIN(l, monitor_area[x].x);
 674                 t = MIN(t, monitor_area[x].y);
 675                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
 676                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
 677             }
 678         }
 679         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
 680
 681         /* apply struts */
 682         STRUT_SET(s, 0, 0, 0, 0);
 683         for (it = client_list; it; it = it->next)
 684             STRUT_ADD(s, ((ObClient*)it->data)->strut);
 685         STRUT_ADD(s, dock_strut);
 686
 687         if (s.left) {
 688             int o;
 689
 690             /* find the left-most xin heads, i do this in 2 loops :| */
 691             o = area[i][0].x;
 692             for (x = 1; x < screen_num_monitors; ++x)
 693                 o = MIN(o, area[i][x].x);
 694
 695             for (x = 0; x < screen_num_monitors; ++x) {
 696                 int edge = o + s.left - area[i][x].x;
 697                 if (edge > 0) {
 698                     area[i][x].x += edge;
 699                     area[i][x].width -= edge;
 700                 }
 701             }
 702
 703             area[i][screen_num_monitors].x += s.left;
 704             area[i][screen_num_monitors].width -= s.left;
 705         }
 706         if (s.top) {
 707             int o;
 708
 709             /* find the left-most xin heads, i do this in 2 loops :| */
 710             o = area[i][0].y;
 711             for (x = 1; x < screen_num_monitors; ++x)
 712                 o = MIN(o, area[i][x].y);
 713
 714             for (x = 0; x < screen_num_monitors; ++x) {
 715                 int edge = o + s.top - area[i][x].y;
 716                 if (edge > 0) {
 717                     area[i][x].y += edge;
 718                     area[i][x].height -= edge;
 719                 }
 720             }
 721
 722             area[i][screen_num_monitors].y += s.top;
 723             area[i][screen_num_monitors].height -= s.top;
 724         }
 725         if (s.right) {
 726             int o;
 727
 728             /* find the bottom-most xin heads, i do this in 2 loops :| */
 729             o = area[i][0].x + area[i][0].width - 1;
 730             for (x = 1; x < screen_num_monitors; ++x)
 731                 o = MAX(o, area[i][x].x + area[i][x].width - 1);
 732
 733             for (x = 0; x < screen_num_monitors; ++x) {
 734                 int edge = (area[i][x].x + area[i][x].width - 1) -
 735                     (o - s.right);
 736                 if (edge > 0)
 737                     area[i][x].width -= edge;
 738             }
 739
 740             area[i][screen_num_monitors].width -= s.right;
 741         }
 742         if (s.bottom) {
 743             int o;
 744
 745             /* find the bottom-most xin heads, i do this in 2 loops :| */
 746             o = area[i][0].y + area[i][0].height - 1;
 747             for (x = 1; x < screen_num_monitors; ++x)
 748                 o = MAX(o, area[i][x].y + area[i][x].height - 1);
 749
 750             for (x = 0; x < screen_num_monitors; ++x) {
 751                 int edge = (area[i][x].y + area[i][x].height - 1) -
 752                     (o - s.bottom);
 753                 if (edge > 0)
 754                     area[i][x].height -= edge;
 755             }
 756
 757             area[i][screen_num_monitors].height -= s.bottom;
 758         }
 759
 760         /* XXX when dealing with partial struts, if its in a single
 761            xinerama area, then only subtract it from that area's space
 762         for (x = 0; x < screen_num_monitors; ++x) {
 763             GList *it;
 764
 765
 766                do something smart with it for the 'all xinerama areas' one...
 767
 768             for (it = client_list; it; it = it->next) {
 769
 770                 XXX if gunna test this shit, then gotta worry about when
 771                 the client moves between xinerama heads..
 772
 773                 if (RECT_CONTAINS_RECT(((ObClient*)it->data)->frame->area,
 774                                        area[i][x])) {
 775
 776                 }
 777             }
 778         }
 779         */
 780
 781         /* XXX optimize when this is run? */
 782
 783         /* the area has changed, adjust all the maximized
 784            windows */
 785         for (it = client_list; it; it = it->next) {
 786             ObClient *c = it->data;
 787             if (i < screen_num_desktops) {
 788                 if (c->desktop == i)
 789                     client_reconfigure(c);
 790             } else if (c->desktop == DESKTOP_ALL)
 791                 client_reconfigure(c);
 792         }
 793         if (i < screen_num_desktops) {
 794             /* don't set these for the 'all desktops' area */
 795             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
 796             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
 797             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
 798             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
 799         }
 800     }
 801     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
 802                 dims, 4 * screen_num_desktops);
 803
 804     g_free(dims);
 805 }
 806
 807 Rect *screen_area(guint desktop)
 808 {
 809     return screen_area_monitor(desktop, screen_num_monitors);
 810 }
 811
 812 Rect *screen_area_monitor(guint desktop, guint head)
 813 {
 814     if (head > screen_num_monitors)
 815         return NULL;
 816     if (desktop >= screen_num_desktops) {
 817         if (desktop == DESKTOP_ALL)
 818             return &area[screen_num_desktops][head];
 819         return NULL;
 820     }
 821     return &area[desktop][head];
 822 }
 823
 824 Rect *screen_physical_area()
 825 {
 826     return screen_physical_area_monitor(screen_num_monitors);
 827 }
 828
 829 Rect *screen_physical_area_monitor(guint head)
 830 {
 831     if (head > screen_num_monitors)
 832         return NULL;
 833     return &monitor_area[head];
 834 }
 835
 836 static void set_root_cursor()
 837 {
 838 #ifdef USE_LIBSN
 839         if (sn_busy_cnt)
 840             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
 841                           ob_cursor(OB_CURSOR_BUSY));
 842         else
 843 #endif
 844             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
 845                           ob_cursor(OB_CURSOR_POINTER));
 846 }
 847
 848 #ifdef USE_LIBSN
 849 static void sn_timeout(void *data)
 850 {
 851     timer_stop(sn_timer);
 852     sn_timer = NULL;
 853     sn_busy_cnt = 0;
 854
 855     set_root_cursor();
 856 }
 857
 858 static void sn_event_func(SnMonitorEvent *ev, void *data)
 859 {
 860     SnStartupSequence *seq;
 861     const char *seq_id, *bin_name;
 862     int cnt = sn_busy_cnt;
 863
 864     if (!(seq = sn_monitor_event_get_startup_sequence(ev)))
 865         return;
 866
 867     seq_id = sn_startup_sequence_get_id(seq);
 868     bin_name = sn_startup_sequence_get_binary_name(seq);
 869
 870     if (!(seq_id && bin_name))
 871         return;
 872
 873     switch (sn_monitor_event_get_type(ev)) {
 874     case SN_MONITOR_EVENT_INITIATED:
 875         ++sn_busy_cnt;
 876         if (sn_timer)
 877             timer_stop(sn_timer);
 878         /* 30 second timeout for apps to start */
 879         sn_timer = timer_start(30 * 1000000, sn_timeout, NULL);
 880         break;
 881     case SN_MONITOR_EVENT_CHANGED:
 882         break;
 883     case SN_MONITOR_EVENT_COMPLETED:
 884         if (sn_busy_cnt) --sn_busy_cnt;
 885         if (sn_timer) {
 886             timer_stop(sn_timer);
 887             sn_timer = NULL;
 888         }
 889         break;
 890     case SN_MONITOR_EVENT_CANCELED:
 891         if (sn_busy_cnt) --sn_busy_cnt;
 892         if (sn_timer) {
 893             timer_stop(sn_timer);
 894             sn_timer = NULL;
 895         }
 896     };
 897
 898     if (sn_busy_cnt != cnt)
 899         set_root_cursor();
 900 }
 901 #endif
 902
 903 gboolean screen_pointer_pos(int *x, int *y)
 904 {
 905     Window w;
 906     int i;
 907     guint u;
 908
 909     return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
 910                            &w, &w, x, y, &i, &i, &u);
 911 }