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    = 0;
  34 guint    screen_num_xin_areas   = 0;
  35 guint    screen_desktop         = 0;
  36 Size     screen_physical_size;
  37 gboolean screen_showing_desktop;
  38 DesktopLayout screen_desktop_layout;
  39 char   **screen_desktop_names = NULL;
  40
  41 static Rect  **area = NULL; /* array of desktop holding array of
  42                                xinerama areas */
  43 static Rect  *xin_areas = NULL;
  44 static Window support_window = None;
  45
  46 #ifdef USE_LIBSN
  47 static SnMonitorContext *sn_context;
  48 static int sn_busy_cnt;
  49 static Timer *sn_timer = NULL;
  50
  51 static void sn_event_func(SnMonitorEvent *event, void *data);
  52 #endif
  53
  54 static void set_root_cursor();
  55
  56 static gboolean running;
  57 static int another_running(Display *d, XErrorEvent *e)
  58 {
  59     (void)d;(void)e;
  60     g_message("A window manager is already running on screen %d",
  61               ob_screen);
  62     running = TRUE;
  63     return -1;
  64 }
  65
  66 gboolean screen_annex()
  67 {
  68     XErrorHandler old;
  69     pid_t pid;
  70     int i, num_support;
  71     guint32 *supported;
  72
  73     running = FALSE;
  74     old = XSetErrorHandler(another_running);
  75     XSelectInput(ob_display, ob_root, ROOT_EVENTMASK);
  76     XSync(ob_display, FALSE);
  77     XSetErrorHandler(old);
  78     if (running)
  79         return FALSE;
  80
  81     g_message("Managing screen %d", ob_screen);
  82
  83     set_root_cursor();
  84
  85     /* set the OPENBOX_PID hint */
  86     pid = getpid();
  87     PROP_SET32(ob_root, openbox_pid, cardinal, pid);
  88
  89     /* create the netwm support window */
  90     support_window = XCreateSimpleWindow(ob_display, ob_root, 0,0,1,1,0,0,0);
  91
  92     /* set supporting window */
  93     PROP_SET32(ob_root, net_supporting_wm_check, window, support_window);
  94
  95     /* set properties on the supporting window */
  96     PROP_SETS(support_window, net_wm_name, "Openbox3");
  97     PROP_SET32(support_window, net_supporting_wm_check, window,support_window);
  98
  99     /* set the _NET_SUPPORTED_ATOMS hint */
 100     num_support = 61;
 101     i = 0;
 102     supported = g_new(guint32, num_support);
 103     supported[i++] = prop_atoms.net_current_desktop;
 104     supported[i++] = prop_atoms.net_number_of_desktops;
 105     supported[i++] = prop_atoms.net_desktop_geometry;
 106     supported[i++] = prop_atoms.net_desktop_viewport;
 107     supported[i++] = prop_atoms.net_active_window;
 108     supported[i++] = prop_atoms.net_workarea;
 109     supported[i++] = prop_atoms.net_client_list;
 110     supported[i++] = prop_atoms.net_client_list_stacking;
 111     supported[i++] = prop_atoms.net_desktop_names;
 112     supported[i++] = prop_atoms.net_close_window;
 113     supported[i++] = prop_atoms.net_desktop_layout;
 114     supported[i++] = prop_atoms.net_showing_desktop;
 115     supported[i++] = prop_atoms.net_wm_name;
 116     supported[i++] = prop_atoms.net_wm_visible_name;
 117     supported[i++] = prop_atoms.net_wm_icon_name;
 118     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 119     supported[i++] = prop_atoms.net_wm_desktop;
 120     supported[i++] = prop_atoms.net_wm_strut;
 121     supported[i++] = prop_atoms.net_wm_window_type;
 122     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 123     supported[i++] = prop_atoms.net_wm_window_type_dock;
 124     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 125     supported[i++] = prop_atoms.net_wm_window_type_menu;
 126     supported[i++] = prop_atoms.net_wm_window_type_utility;
 127     supported[i++] = prop_atoms.net_wm_window_type_splash;
 128     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 129     supported[i++] = prop_atoms.net_wm_window_type_normal;
 130     supported[i++] = prop_atoms.net_wm_allowed_actions;
 131     supported[i++] = prop_atoms.net_wm_action_move;
 132     supported[i++] = prop_atoms.net_wm_action_resize;
 133     supported[i++] = prop_atoms.net_wm_action_minimize;
 134     supported[i++] = prop_atoms.net_wm_action_shade;
 135     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 136     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 137     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 138     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 139     supported[i++] = prop_atoms.net_wm_action_close;
 140     supported[i++] = prop_atoms.net_wm_state;
 141     supported[i++] = prop_atoms.net_wm_state_modal;
 142     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 143     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 144     supported[i++] = prop_atoms.net_wm_state_shaded;
 145     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 146     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 147     supported[i++] = prop_atoms.net_wm_state_hidden;
 148     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 149     supported[i++] = prop_atoms.net_wm_state_above;
 150     supported[i++] = prop_atoms.net_wm_state_below;
 151     supported[i++] = prop_atoms.net_moveresize_window;
 152     supported[i++] = prop_atoms.net_wm_moveresize;
 153     supported[i++] = prop_atoms.net_wm_moveresize_size_topleft;
 154     supported[i++] = prop_atoms.net_wm_moveresize_size_top;
 155     supported[i++] = prop_atoms.net_wm_moveresize_size_topright;
 156     supported[i++] = prop_atoms.net_wm_moveresize_size_right;
 157     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomright;
 158     supported[i++] = prop_atoms.net_wm_moveresize_size_bottom;
 159     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomleft;
 160     supported[i++] = prop_atoms.net_wm_moveresize_size_left;
 161     supported[i++] = prop_atoms.net_wm_moveresize_move;
 162     supported[i++] = prop_atoms.net_wm_moveresize_size_keyboard;
 163     supported[i++] = prop_atoms.net_wm_moveresize_move_keyboard;
 164     g_assert(i == num_support);
 165 /*
 166   supported[] = prop_atoms.net_wm_action_stick;
 167 */
 168
 169     PROP_SETA32(ob_root, net_supported, atom, supported, num_support);
 170     g_free(supported);
 171
 172     return TRUE;
 173 }
 174
 175 void screen_startup()
 176 {
 177     GSList *it;
 178     guint i;
 179
 180     /* get the initial size */
 181     screen_resize(WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen)),
 182                   HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen)));
 183
 184     /* set the names */
 185     screen_desktop_names = g_new(char*,
 186                                  g_slist_length(config_desktops_names) + 1);
 187     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 188         screen_desktop_names[i] = it->data; /* dont strdup */
 189     screen_desktop_names[i] = NULL;
 190     PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
 191     g_free(screen_desktop_names); /* dont free the individual strings */
 192     screen_desktop_names = NULL;
 193
 194     screen_num_desktops = 0;
 195     screen_set_num_desktops(config_desktops_num);
 196     if (startup_desktop >= screen_num_desktops)
 197         startup_desktop = 0;
 198     screen_desktop = startup_desktop;
 199     screen_set_desktop(startup_desktop);
 200
 201     /* don't start in showing-desktop mode */
 202     screen_showing_desktop = FALSE;
 203     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 204
 205     screen_update_layout();
 206
 207 #ifdef USE_LIBSN
 208     sn_context = sn_monitor_context_new(ob_sn_display, ob_screen,
 209                                         sn_event_func, NULL, NULL);
 210     sn_busy_cnt = 0;
 211 #endif
 212 }
 213
 214 void screen_shutdown()
 215 {
 216     Rect **r;
 217
 218     XSelectInput(ob_display, ob_root, NoEventMask);
 219
 220     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 221     PROP_ERASE(ob_root, net_supported); /* not without us */
 222     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 223
 224     XDestroyWindow(ob_display, support_window);
 225
 226     g_strfreev(screen_desktop_names);
 227     for (r = area; *r; ++r)
 228         g_free(*r);
 229     g_free(area);
 230 }
 231
 232 void screen_resize(int w, int h)
 233 {
 234     GList *it;
 235     guint32 geometry[2];
 236
 237     /* Set the _NET_DESKTOP_GEOMETRY hint */
 238     screen_physical_size.width = geometry[0] = w;
 239     screen_physical_size.height = geometry[1] = h;
 240     PROP_SETA32(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 241
 242     if (ob_state == State_Starting)
 243         return;
 244
 245     dock_configure();
 246     screen_update_areas();
 247
 248     for (it = client_list; it; it = it->next)
 249         client_move_onscreen(it->data);
 250 }
 251
 252 void screen_set_num_desktops(guint num)
 253 {
 254     guint i, old;
 255     guint32 *viewport;
 256     GList *it;
 257
 258     g_assert(num > 0);
 259
 260     old = screen_num_desktops;
 261     screen_num_desktops = num;
 262     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 263
 264     /* set the viewport hint */
 265     viewport = g_new0(guint32, num * 2);
 266     PROP_SETA32(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 267     g_free(viewport);
 268
 269     /* the number of rows/columns will differ */
 270     screen_update_layout();
 271
 272     /* may be some unnamed desktops that we need to fill in with names */
 273     screen_update_desktop_names();
 274
 275     /* update the focus lists */
 276     /* free our lists for the desktops which have disappeared */
 277     for (i = num; i < old; ++i)
 278         g_list_free(focus_order[i]);
 279     /* realloc the array */
 280     focus_order = g_renew(GList*, focus_order, num);
 281     /* set the new lists to be empty */
 282     for (i = old; i < num; ++i)
 283         focus_order[i] = NULL;
 284
 285     /* move windows on desktops that will no longer exist! */
 286     for (it = client_list; it != NULL; it = it->next) {
 287         Client *c = it->data;
 288         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
 289             client_set_desktop(c, num - 1, FALSE);
 290     }
 291
 292     /* change our struts/area to match (after moving windows) */
 293     screen_update_areas();
 294
 295     dispatch_ob(Event_Ob_NumDesktops, num, old);
 296
 297     /* change our desktop if we're on one that no longer exists! */
 298     if (screen_desktop >= screen_num_desktops)
 299         screen_set_desktop(num - 1);
 300 }
 301
 302 void screen_set_desktop(guint num)
 303 {
 304     GList *it;
 305     guint old;
 306     XEvent e;
 307
 308     g_assert(num < screen_num_desktops);
 309
 310     old = screen_desktop;
 311     screen_desktop = num;
 312     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 313
 314     if (old == num) return;
 315
 316     g_message("Moving to desktop %d", num+1);
 317
 318     /* show windows before hiding the rest to lessen the enter/leave events */
 319
 320     /* show windows from top to bottom */
 321     for (it = stacking_list; it != NULL; it = it->next) {
 322         if (WINDOW_IS_CLIENT(it->data)) {
 323             Client *c = it->data;
 324             if (!c->frame->visible && client_should_show(c))
 325                 frame_show(c->frame);
 326         }
 327     }
 328
 329     /* hide windows from bottom to top */
 330     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 331         if (WINDOW_IS_CLIENT(it->data)) {
 332             Client *c = it->data;
 333             if (c->frame->visible && !client_should_show(c))
 334                 frame_hide(c->frame);
 335         }
 336     }
 337
 338     /* focus the last focused window on the desktop, and ignore enter events
 339        from the switch so it doesnt mess with the focus */
 340     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 341     g_message("switch fallback");
 342     focus_fallback(Fallback_Desktop);
 343     g_message("/switch fallback");
 344
 345     dispatch_ob(Event_Ob_Desktop, num, old);
 346 }
 347
 348 void screen_update_layout()
 349 {
 350     guint32 *data = NULL;
 351     guint num;
 352
 353     /* defaults */
 354     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 355     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 356     screen_desktop_layout.rows = 1;
 357     screen_desktop_layout.columns = screen_num_desktops;
 358
 359     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
 360         if (num == 3 || num == 4) {
 361             if (data[0] == prop_atoms.net_wm_orientation_vert)
 362                 screen_desktop_layout.orientation = data[0];
 363             if (num == 3)
 364                 screen_desktop_layout.start_corner =
 365                     prop_atoms.net_wm_topright;
 366             else {
 367                 if (data[3] == prop_atoms.net_wm_topright)
 368                     screen_desktop_layout.start_corner = data[3];
 369                 else if (data[3] == prop_atoms.net_wm_bottomright)
 370                     screen_desktop_layout.start_corner = data[3];
 371                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 372                     screen_desktop_layout.start_corner = data[3];
 373             }
 374
 375             /* fill in a zero rows/columns */
 376             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 377                 if (data[1] == 0) {
 378                     data[1] = (screen_num_desktops +
 379                                screen_num_desktops % data[2]) / data[2];
 380                 } else if (data[2] == 0) {
 381                     data[2] = (screen_num_desktops +
 382                                screen_num_desktops % data[1]) / data[1];
 383                 }
 384                 screen_desktop_layout.columns = data[1];
 385                 screen_desktop_layout.rows = data[2];
 386             }
 387
 388             /* bounds checking */
 389             if (screen_desktop_layout.orientation ==
 390                 prop_atoms.net_wm_orientation_horz) {
 391                 if (screen_desktop_layout.rows > screen_num_desktops)
 392                     screen_desktop_layout.rows = screen_num_desktops;
 393                 if (screen_desktop_layout.columns >
 394                     ((screen_num_desktops + screen_num_desktops %
 395                       screen_desktop_layout.rows) /
 396                      screen_desktop_layout.rows))
 397                     screen_desktop_layout.columns =
 398                         (screen_num_desktops + screen_num_desktops %
 399                          screen_desktop_layout.rows) /
 400                         screen_desktop_layout.rows;
 401             } else {
 402                 if (screen_desktop_layout.columns > screen_num_desktops)
 403                     screen_desktop_layout.columns = screen_num_desktops;
 404                 if (screen_desktop_layout.rows >
 405                     ((screen_num_desktops + screen_num_desktops %
 406                       screen_desktop_layout.columns) /
 407                      screen_desktop_layout.columns))
 408                     screen_desktop_layout.rows =
 409                         (screen_num_desktops + screen_num_desktops %
 410                          screen_desktop_layout.columns) /
 411                         screen_desktop_layout.columns;
 412             }
 413         }
 414         g_free(data);
 415     }
 416 }
 417
 418 void screen_update_desktop_names()
 419 {
 420     guint i;
 421
 422     /* empty the array */
 423     g_strfreev(screen_desktop_names);
 424     screen_desktop_names = NULL;
 425
 426     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
 427         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 428     else
 429         i = 0;
 430     if (i <= screen_num_desktops) {
 431         screen_desktop_names = g_renew(char*, screen_desktop_names,
 432                                        screen_num_desktops + 1);
 433         screen_desktop_names[screen_num_desktops] = NULL;
 434         for (; i < screen_num_desktops; ++i)
 435             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 436     }
 437 }
 438
 439 void screen_show_desktop(gboolean show)
 440 {
 441     GList *it;
 442
 443     if (show == screen_showing_desktop) return; /* no change */
 444
 445     screen_showing_desktop = show;
 446
 447     if (show) {
 448         /* bottom to top */
 449         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 450             if (WINDOW_IS_CLIENT(it->data)) {
 451                 Client *client = it->data;
 452                 if (client->frame->visible && !client_should_show(client))
 453                     frame_hide(client->frame);
 454             }
 455         }
 456     } else {
 457         /* top to bottom */
 458         for (it = stacking_list; it != NULL; it = it->next) {
 459             if (WINDOW_IS_CLIENT(it->data)) {
 460                 Client *client = it->data;
 461                 if (!client->frame->visible && client_should_show(client))
 462                     frame_show(client->frame);
 463             }
 464         }
 465     }
 466
 467     if (show) {
 468         /* focus desktop */
 469         for (it = focus_order[screen_desktop]; it; it = it->next)
 470             if (((Client*)it->data)->type == Type_Desktop &&
 471                 client_focus(it->data))
 472                 break;
 473     } else {
 474         focus_fallback(Fallback_NoFocus);
 475     }
 476
 477     show = !!show; /* make it boolean */
 478     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 479
 480     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 481 }
 482
 483 void screen_install_colormap(Client *client, gboolean install)
 484 {
 485     XWindowAttributes wa;
 486
 487     if (client == NULL) {
 488         if (install)
 489             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 490         else
 491             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 492     } else {
 493         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 494             wa.colormap != None) {
 495             xerror_set_ignore(TRUE);
 496             if (install)
 497                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 498             else
 499                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 500             xerror_set_ignore(FALSE);
 501         }
 502     }
 503 }
 504
 505 void screen_update_areas()
 506 {
 507     guint i, x;
 508     guint32 *dims;
 509     Rect **old_area = area;
 510     Rect **rit;
 511     GList *it;
 512
 513     g_free(xin_areas);
 514     extensions_xinerama_screens(&xin_areas, &screen_num_xin_areas);
 515
 516     if (area) {
 517         for (i = 0; area[i]; ++i)
 518             g_free(area[i]);
 519         g_free(area);
 520     }
 521
 522     area = g_new(Rect*, screen_num_desktops + 2);
 523     for (i = 0; i < screen_num_desktops + 1; ++i)
 524         area[i] = g_new(Rect, screen_num_xin_areas + 1);
 525     area[i] = NULL;
 526
 527     dims = g_new(guint32, 4 * screen_num_desktops);
 528
 529     rit = old_area;
 530     for (i = 0; i < screen_num_desktops + 1; ++i) {
 531         Strut s;
 532         int l, r, t, b;
 533
 534         /* calc the xinerama areas */
 535         for (x = 0; x < screen_num_xin_areas; ++x) {
 536             area[i][x] = xin_areas[x];
 537             if (x == 0) {
 538                 l = xin_areas[x].x;
 539                 t = xin_areas[x].y;
 540                 r = xin_areas[x].x + xin_areas[x].width - 1;
 541                 b = xin_areas[x].y + xin_areas[x].height - 1;
 542             } else {
 543                 l = MIN(l, xin_areas[x].x);
 544                 t = MIN(t, xin_areas[x].y);
 545                 r = MAX(r, xin_areas[x].x + xin_areas[x].width - 1);
 546                 b = MAX(b, xin_areas[x].y + xin_areas[x].height - 1);
 547             }
 548         }
 549         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
 550
 551         /* apply struts */
 552         STRUT_SET(s, 0, 0, 0, 0);
 553         for (it = client_list; it; it = it->next)
 554             STRUT_ADD(s, ((Client*)it->data)->strut);
 555         STRUT_ADD(s, dock_strut);
 556
 557         if (s.left) {
 558             int o;
 559
 560             /* find the left-most xin heads, i do this in 2 loops :| */
 561             o = area[i][0].x;
 562             for (x = 1; x < screen_num_xin_areas; ++x)
 563                 o = MIN(o, area[i][x].x);
 564
 565             for (x = 0; x < screen_num_xin_areas; ++x) {
 566                 int edge = o + s.left - area[i][x].x;
 567                 if (edge > 0) {
 568                     area[i][x].x += edge;
 569                     area[i][x].width -= edge;
 570                 }
 571             }
 572
 573             area[i][screen_num_xin_areas].x += s.left;
 574             area[i][screen_num_xin_areas].width -= s.left;
 575         }
 576         if (s.top) {
 577             int o;
 578
 579             /* find the left-most xin heads, i do this in 2 loops :| */
 580             o = area[i][0].y;
 581             for (x = 1; x < screen_num_xin_areas; ++x)
 582                 o = MIN(o, area[i][x].y);
 583
 584             for (x = 0; x < screen_num_xin_areas; ++x) {
 585                 int edge = o + s.top - area[i][x].y;
 586                 if (edge > 0) {
 587                     area[i][x].y += edge;
 588                     area[i][x].height -= edge;
 589                 }
 590             }
 591
 592             area[i][screen_num_xin_areas].y += s.top;
 593             area[i][screen_num_xin_areas].height -= s.top;
 594         }
 595         if (s.right) {
 596             int o;
 597
 598             /* find the bottom-most xin heads, i do this in 2 loops :| */
 599             o = area[i][0].x + area[i][0].width - 1;
 600             for (x = 1; x < screen_num_xin_areas; ++x)
 601                 o = MAX(o, area[i][x].x + area[i][x].width - 1);
 602
 603             for (x = 0; x < screen_num_xin_areas; ++x) {
 604                 int edge = (area[i][x].x + area[i][x].width - 1) -
 605                     (o - s.right);
 606                 if (edge > 0)
 607                     area[i][x].width -= edge;
 608             }
 609
 610             area[i][screen_num_xin_areas].width -= s.right;
 611         }
 612         if (s.bottom) {
 613             int o;
 614
 615             /* find the bottom-most xin heads, i do this in 2 loops :| */
 616             o = area[i][0].y + area[i][0].height - 1;
 617             for (x = 1; x < screen_num_xin_areas; ++x)
 618                 o = MAX(o, area[i][x].y + area[i][x].height - 1);
 619
 620             for (x = 0; x < screen_num_xin_areas; ++x) {
 621                 int edge = (area[i][x].y + area[i][x].height - 1) -
 622                     (o - s.bottom);
 623                 if (edge > 0)
 624                     area[i][x].height -= edge;
 625             }
 626
 627             area[i][screen_num_xin_areas].height -= s.bottom;
 628         }
 629
 630         /* XXX when dealing with partial struts, if its in a single
 631            xinerama area, then only subtract it from that area's space
 632         for (x = 0; x < screen_num_xin_areas; ++x) {
 633             GList *it;
 634
 635
 636                do something smart with it for the 'all xinerama areas' one...
 637
 638             for (it = client_list; it; it = it->next) {
 639
 640                 XXX if gunna test this shit, then gotta worry about when
 641                 the client moves between xinerama heads..
 642
 643                 if (RECT_CONTAINS_RECT(((Client*)it->data)->frame->area,
 644                                        area[i][x])) {
 645
 646                 }
 647             }
 648         }
 649         */
 650
 651         /* XXX optimize when this is run? */
 652
 653         /* the area has changed, adjust all the maximized
 654            windows */
 655         for (it = client_list; it; it = it->next) {
 656             Client *c = it->data;
 657             if (i < screen_num_desktops) {
 658                 if (c->desktop == i)
 659                     client_reconfigure(c);
 660             } else if (c->desktop == DESKTOP_ALL)
 661                 client_reconfigure(c);
 662         }
 663         if (i < screen_num_desktops) {
 664             /* don't set these for the 'all desktops' area */
 665             dims[(i * 4) + 0] = area[i][screen_num_xin_areas].x;
 666             dims[(i * 4) + 1] = area[i][screen_num_xin_areas].y;
 667             dims[(i * 4) + 2] = area[i][screen_num_xin_areas].width;
 668             dims[(i * 4) + 3] = area[i][screen_num_xin_areas].height;
 669         }
 670     }
 671     PROP_SETA32(ob_root, net_workarea, cardinal,
 672                 dims, 4 * screen_num_desktops);
 673
 674     g_free(dims);
 675 }
 676
 677 Rect *screen_area(guint desktop)
 678 {
 679     return screen_area_xinerama(desktop, screen_num_xin_areas);
 680 }
 681
 682 Rect *screen_area_xinerama(guint desktop, guint head)
 683 {
 684     if (head > screen_num_xin_areas)
 685         return NULL;
 686     if (desktop >= screen_num_desktops) {
 687         if (desktop == DESKTOP_ALL)
 688             return &area[screen_num_desktops][head];
 689         return NULL;
 690     }
 691     return &area[desktop][head];
 692 }
 693
 694 Rect *screen_physical_area()
 695 {
 696     return screen_physical_area_xinerama(screen_num_xin_areas);
 697 }
 698
 699 Rect *screen_physical_area_xinerama(guint head)
 700 {
 701     if (head > screen_num_xin_areas)
 702         return NULL;
 703     return &xin_areas[head];
 704 }
 705
 706 static void set_root_cursor()
 707 {
 708 #ifdef USE_LIBSN
 709         if (sn_busy_cnt)
 710             XDefineCursor(ob_display, ob_root, ob_cursors.busy);
 711         else
 712 #endif
 713             XDefineCursor(ob_display, ob_root, ob_cursors.ptr);
 714 }
 715
 716 #ifdef USE_LIBSN
 717 static void sn_timeout(void *data)
 718 {
 719     timer_stop(sn_timer);
 720     sn_timer = NULL;
 721     sn_busy_cnt = 0;
 722
 723     set_root_cursor();
 724 }
 725
 726 static void sn_event_func(SnMonitorEvent *ev, void *data)
 727 {
 728     SnStartupSequence *seq;
 729     const char *seq_id, *bin_name;
 730     int cnt = sn_busy_cnt;
 731
 732     if (!(seq = sn_monitor_event_get_startup_sequence(ev)))
 733         return;
 734
 735     seq_id = sn_startup_sequence_get_id(seq);
 736     bin_name = sn_startup_sequence_get_binary_name(seq);
 737
 738     if (!(seq_id && bin_name))
 739         return;
 740
 741     switch (sn_monitor_event_get_type(ev)) {
 742     case SN_MONITOR_EVENT_INITIATED:
 743         ++sn_busy_cnt;
 744         if (sn_timer)
 745             timer_stop(sn_timer);
 746         /* 30 second timeout for apps to start */
 747         sn_timer = timer_start(30 * 1000000, sn_timeout, NULL);
 748         break;
 749     case SN_MONITOR_EVENT_CHANGED:
 750         break;
 751     case SN_MONITOR_EVENT_COMPLETED:
 752         if (sn_busy_cnt) --sn_busy_cnt;
 753         if (sn_timer) {
 754             timer_stop(sn_timer);
 755             sn_timer = NULL;
 756         }
 757         break;
 758     case SN_MONITOR_EVENT_CANCELED:
 759         if (sn_busy_cnt) --sn_busy_cnt;
 760         if (sn_timer) {
 761             timer_stop(sn_timer);
 762             sn_timer = NULL;
 763         }
 764     };
 765
 766     if (sn_busy_cnt != cnt)
 767         set_root_cursor();
 768 }
 769 #endif