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_monitors    = 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  *monitor_area = 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 ObTimer *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, "Openbox");
  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();
 182
 183     /* set the names */
 184     screen_desktop_names = g_new(char*,
 185                                  g_slist_length(config_desktops_names) + 1);
 186     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 187         screen_desktop_names[i] = it->data; /* dont strdup */
 188     screen_desktop_names[i] = NULL;
 189     PROP_SETSS(ob_root, net_desktop_names, screen_desktop_names);
 190     g_free(screen_desktop_names); /* dont free the individual strings */
 191     screen_desktop_names = NULL;
 192
 193     screen_num_desktops = 0;
 194     screen_set_num_desktops(config_desktops_num);
 195     if (startup_desktop >= screen_num_desktops)
 196         startup_desktop = 0;
 197     screen_desktop = startup_desktop;
 198     screen_set_desktop(startup_desktop);
 199
 200     /* don't start in showing-desktop mode */
 201     screen_showing_desktop = FALSE;
 202     PROP_SET32(ob_root, net_showing_desktop, cardinal, screen_showing_desktop);
 203
 204     screen_update_layout();
 205
 206 #ifdef USE_LIBSN
 207     sn_context = sn_monitor_context_new(ob_sn_display, ob_screen,
 208                                         sn_event_func, NULL, NULL);
 209     sn_busy_cnt = 0;
 210 #endif
 211 }
 212
 213 void screen_shutdown()
 214 {
 215     Rect **r;
 216
 217     XSelectInput(ob_display, ob_root, NoEventMask);
 218
 219     PROP_ERASE(ob_root, openbox_pid); /* we're not running here no more! */
 220     PROP_ERASE(ob_root, net_supported); /* not without us */
 221     PROP_ERASE(ob_root, net_showing_desktop); /* don't keep this mode */
 222
 223     XDestroyWindow(ob_display, support_window);
 224
 225     g_strfreev(screen_desktop_names);
 226     for (r = area; *r; ++r)
 227         g_free(*r);
 228     g_free(area);
 229 }
 230
 231 void screen_resize()
 232 {
 233     static int oldw = 0, oldh = 0;
 234     int w, h;
 235     GList *it;
 236     guint32 geometry[2];
 237
 238     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 239     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 240
 241     if (w == oldw && h == oldh) return;
 242
 243     oldw = w; oldh = h;
 244
 245     /* Set the _NET_DESKTOP_GEOMETRY hint */
 246     screen_physical_size.width = geometry[0] = w;
 247     screen_physical_size.height = geometry[1] = h;
 248     PROP_SETA32(ob_root, net_desktop_geometry, cardinal, geometry, 2);
 249
 250     if (ob_state == OB_STATE_STARTING)
 251         return;
 252
 253     dock_configure();
 254     screen_update_areas();
 255
 256     for (it = client_list; it; it = it->next)
 257         client_move_onscreen(it->data);
 258 }
 259
 260 void screen_set_num_desktops(guint num)
 261 {
 262     guint i, old;
 263     guint32 *viewport;
 264     GList *it;
 265
 266     g_assert(num > 0);
 267
 268     old = screen_num_desktops;
 269     screen_num_desktops = num;
 270     PROP_SET32(ob_root, net_number_of_desktops, cardinal, num);
 271
 272     /* set the viewport hint */
 273     viewport = g_new0(guint32, num * 2);
 274     PROP_SETA32(ob_root, net_desktop_viewport, cardinal, viewport, num * 2);
 275     g_free(viewport);
 276
 277     /* the number of rows/columns will differ */
 278     screen_update_layout();
 279
 280     /* may be some unnamed desktops that we need to fill in with names */
 281     screen_update_desktop_names();
 282
 283     /* update the focus lists */
 284     /* free our lists for the desktops which have disappeared */
 285     for (i = num; i < old; ++i)
 286         g_list_free(focus_order[i]);
 287     /* realloc the array */
 288     focus_order = g_renew(GList*, focus_order, num);
 289     /* set the new lists to be empty */
 290     for (i = old; i < num; ++i)
 291         focus_order[i] = NULL;
 292
 293     /* move windows on desktops that will no longer exist! */
 294     for (it = client_list; it != NULL; it = it->next) {
 295         ObClient *c = it->data;
 296         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
 297             client_set_desktop(c, num - 1, FALSE);
 298     }
 299
 300     /* change our struts/area to match (after moving windows) */
 301     screen_update_areas();
 302
 303     dispatch_ob(Event_Ob_NumDesktops, num, old);
 304
 305     /* change our desktop if we're on one that no longer exists! */
 306     if (screen_desktop >= screen_num_desktops)
 307         screen_set_desktop(num - 1);
 308 }
 309
 310 void screen_set_desktop(guint num)
 311 {
 312     GList *it;
 313     guint old;
 314     XEvent e;
 315
 316     g_assert(num < screen_num_desktops);
 317
 318     old = screen_desktop;
 319     screen_desktop = num;
 320     PROP_SET32(ob_root, net_current_desktop, cardinal, num);
 321
 322     if (old == num) return;
 323
 324     g_message("Moving to desktop %d", num+1);
 325
 326     /* show windows before hiding the rest to lessen the enter/leave events */
 327
 328     /* show windows from top to bottom */
 329     for (it = stacking_list; it != NULL; it = it->next) {
 330         if (WINDOW_IS_CLIENT(it->data)) {
 331             ObClient *c = it->data;
 332             if (!c->frame->visible && client_should_show(c))
 333                 frame_show(c->frame);
 334         }
 335     }
 336
 337     /* hide windows from bottom to top */
 338     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 339         if (WINDOW_IS_CLIENT(it->data)) {
 340             ObClient *c = it->data;
 341             if (c->frame->visible && !client_should_show(c))
 342                 frame_hide(c->frame);
 343         }
 344     }
 345
 346     /* focus the last focused window on the desktop, and ignore enter events
 347        from the switch so it doesnt mess with the focus */
 348     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 349 #ifdef DEBUG_FOCUS
 350     g_message("switch fallback");
 351 #endif
 352     focus_fallback(OB_FOCUS_FALLBACK_DESKTOP);
 353 #ifdef DEBUG_FOCUS
 354     g_message("/switch fallback");
 355 #endif
 356
 357     dispatch_ob(Event_Ob_Desktop, num, old);
 358 }
 359
 360 void screen_update_layout()
 361 {
 362     ObOrientation orient;
 363     ObCorner corner;
 364     guint rows;
 365     guint cols;
 366     guint32 *data;
 367     guint num;
 368     gboolean valid = FALSE;
 369
 370     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
 371         if (num == 3 || num == 4) {
 372
 373             if (data[0] == prop_atoms.net_wm_orientation_vert)
 374                 orient = OB_ORIENTATION_VERT;
 375             else if (data[0] == prop_atoms.net_wm_orientation_horz)
 376                 orient = OB_ORIENTATION_HORZ;
 377             else
 378                 goto screen_update_layout_bail;
 379
 380             if (num < 4)
 381                 corner = OB_CORNER_TOPLEFT;
 382             else {
 383                 if (data[3] == prop_atoms.net_wm_topright)
 384                     corner = OB_CORNER_TOPRIGHT;
 385                 else if (data[3] == prop_atoms.net_wm_bottomright)
 386                     corner = OB_CORNER_BOTTOMRIGHT;
 387                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 388                     corner = OB_CORNER_BOTTOMLEFT;
 389                 else
 390                     goto screen_update_layout_bail;
 391             }
 392
 393             /* fill in a zero rows/columns */
 394             if ((data[1] == 0 && data[2] == 0) || /* both 0's is bad data.. */
 395                 (data[1] != 0 && data[2] != 0)) { /* no 0's is bad data.. */
 396                 goto screen_update_layout_bail;
 397             } else {
 398                 if (data[1] == 0) {
 399                     data[1] = (screen_num_desktops +
 400                                screen_num_desktops % data[2]) / data[2];
 401                 } else if (data[2] == 0) {
 402                     data[2] = (screen_num_desktops +
 403                                screen_num_desktops % data[1]) / data[1];
 404                 }
 405                 cols = data[1];
 406                 rows = data[2];
 407             }
 408
 409             /* bounds checking */
 410             if (orient == OB_ORIENTATION_HORZ) {
 411                 rows = MIN(rows, screen_num_desktops);
 412                 cols = MIN(cols, ((screen_num_desktops +
 413                                      (screen_num_desktops % rows)) / rows));
 414             } else {
 415                 cols = MIN(cols, screen_num_desktops);
 416                 rows = MIN(rows, ((screen_num_desktops +
 417                                      (screen_num_desktops % cols)) / cols));
 418             }
 419
 420             valid = TRUE;
 421         }
 422     screen_update_layout_bail:
 423         g_free(data);
 424     }
 425
 426     if (!valid) {
 427         /* defaults */
 428         orient = OB_ORIENTATION_HORZ;
 429         corner = OB_CORNER_TOPLEFT;
 430         rows = 1;
 431         cols = screen_num_desktops;
 432     }
 433
 434     screen_desktop_layout.orientation = orient;
 435     screen_desktop_layout.start_corner = corner;
 436     screen_desktop_layout.rows = rows;
 437     screen_desktop_layout.columns = cols;
 438 }
 439
 440 void screen_update_desktop_names()
 441 {
 442     guint i;
 443
 444     /* empty the array */
 445     g_strfreev(screen_desktop_names);
 446     screen_desktop_names = NULL;
 447
 448     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
 449         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 450     else
 451         i = 0;
 452     if (i <= screen_num_desktops) {
 453         screen_desktop_names = g_renew(char*, screen_desktop_names,
 454                                        screen_num_desktops + 1);
 455         screen_desktop_names[screen_num_desktops] = NULL;
 456         for (; i < screen_num_desktops; ++i)
 457             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 458     }
 459 }
 460
 461 void screen_show_desktop(gboolean show)
 462 {
 463     GList *it;
 464
 465     if (show == screen_showing_desktop) return; /* no change */
 466
 467     screen_showing_desktop = show;
 468
 469     if (show) {
 470         /* bottom to top */
 471         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 472             if (WINDOW_IS_CLIENT(it->data)) {
 473                 ObClient *client = it->data;
 474                 if (client->frame->visible && !client_should_show(client))
 475                     frame_hide(client->frame);
 476             }
 477         }
 478     } else {
 479         /* top to bottom */
 480         for (it = stacking_list; it != NULL; it = it->next) {
 481             if (WINDOW_IS_CLIENT(it->data)) {
 482                 ObClient *client = it->data;
 483                 if (!client->frame->visible && client_should_show(client))
 484                     frame_show(client->frame);
 485             }
 486         }
 487     }
 488
 489     if (show) {
 490         /* focus desktop */
 491         for (it = focus_order[screen_desktop]; it; it = it->next)
 492             if (((ObClient*)it->data)->type == OB_CLIENT_TYPE_DESKTOP &&
 493                 client_focus(it->data))
 494                 break;
 495     } else {
 496         focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 497     }
 498
 499     show = !!show; /* make it boolean */
 500     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 501
 502     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 503 }
 504
 505 void screen_install_colormap(ObClient *client, gboolean install)
 506 {
 507     XWindowAttributes wa;
 508
 509     if (client == NULL) {
 510         if (install)
 511             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 512         else
 513             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 514     } else {
 515         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 516             wa.colormap != None) {
 517             xerror_set_ignore(TRUE);
 518             if (install)
 519                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 520             else
 521                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 522             xerror_set_ignore(FALSE);
 523         }
 524     }
 525 }
 526
 527 void screen_update_areas()
 528 {
 529     guint i, x;
 530     guint32 *dims;
 531     Rect **old_area = area;
 532     Rect **rit;
 533     GList *it;
 534
 535     g_free(monitor_area);
 536     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
 537
 538     if (area) {
 539         for (i = 0; area[i]; ++i)
 540             g_free(area[i]);
 541         g_free(area);
 542     }
 543
 544     area = g_new(Rect*, screen_num_desktops + 2);
 545     for (i = 0; i < screen_num_desktops + 1; ++i)
 546         area[i] = g_new(Rect, screen_num_monitors + 1);
 547     area[i] = NULL;
 548
 549     dims = g_new(guint32, 4 * screen_num_desktops);
 550
 551     rit = old_area;
 552     for (i = 0; i < screen_num_desktops + 1; ++i) {
 553         Strut s;
 554         int l, r, t, b;
 555
 556         /* calc the xinerama areas */
 557         for (x = 0; x < screen_num_monitors; ++x) {
 558             area[i][x] = monitor_area[x];
 559             if (x == 0) {
 560                 l = monitor_area[x].x;
 561                 t = monitor_area[x].y;
 562                 r = monitor_area[x].x + monitor_area[x].width - 1;
 563                 b = monitor_area[x].y + monitor_area[x].height - 1;
 564             } else {
 565                 l = MIN(l, monitor_area[x].x);
 566                 t = MIN(t, monitor_area[x].y);
 567                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
 568                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
 569             }
 570         }
 571         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
 572
 573         /* apply struts */
 574         STRUT_SET(s, 0, 0, 0, 0);
 575         for (it = client_list; it; it = it->next)
 576             STRUT_ADD(s, ((ObClient*)it->data)->strut);
 577         STRUT_ADD(s, dock_strut);
 578
 579         if (s.left) {
 580             int o;
 581
 582             /* find the left-most xin heads, i do this in 2 loops :| */
 583             o = area[i][0].x;
 584             for (x = 1; x < screen_num_monitors; ++x)
 585                 o = MIN(o, area[i][x].x);
 586
 587             for (x = 0; x < screen_num_monitors; ++x) {
 588                 int edge = o + s.left - area[i][x].x;
 589                 if (edge > 0) {
 590                     area[i][x].x += edge;
 591                     area[i][x].width -= edge;
 592                 }
 593             }
 594
 595             area[i][screen_num_monitors].x += s.left;
 596             area[i][screen_num_monitors].width -= s.left;
 597         }
 598         if (s.top) {
 599             int o;
 600
 601             /* find the left-most xin heads, i do this in 2 loops :| */
 602             o = area[i][0].y;
 603             for (x = 1; x < screen_num_monitors; ++x)
 604                 o = MIN(o, area[i][x].y);
 605
 606             for (x = 0; x < screen_num_monitors; ++x) {
 607                 int edge = o + s.top - area[i][x].y;
 608                 if (edge > 0) {
 609                     area[i][x].y += edge;
 610                     area[i][x].height -= edge;
 611                 }
 612             }
 613
 614             area[i][screen_num_monitors].y += s.top;
 615             area[i][screen_num_monitors].height -= s.top;
 616         }
 617         if (s.right) {
 618             int o;
 619
 620             /* find the bottom-most xin heads, i do this in 2 loops :| */
 621             o = area[i][0].x + area[i][0].width - 1;
 622             for (x = 1; x < screen_num_monitors; ++x)
 623                 o = MAX(o, area[i][x].x + area[i][x].width - 1);
 624
 625             for (x = 0; x < screen_num_monitors; ++x) {
 626                 int edge = (area[i][x].x + area[i][x].width - 1) -
 627                     (o - s.right);
 628                 if (edge > 0)
 629                     area[i][x].width -= edge;
 630             }
 631
 632             area[i][screen_num_monitors].width -= s.right;
 633         }
 634         if (s.bottom) {
 635             int o;
 636
 637             /* find the bottom-most xin heads, i do this in 2 loops :| */
 638             o = area[i][0].y + area[i][0].height - 1;
 639             for (x = 1; x < screen_num_monitors; ++x)
 640                 o = MAX(o, area[i][x].y + area[i][x].height - 1);
 641
 642             for (x = 0; x < screen_num_monitors; ++x) {
 643                 int edge = (area[i][x].y + area[i][x].height - 1) -
 644                     (o - s.bottom);
 645                 if (edge > 0)
 646                     area[i][x].height -= edge;
 647             }
 648
 649             area[i][screen_num_monitors].height -= s.bottom;
 650         }
 651
 652         /* XXX when dealing with partial struts, if its in a single
 653            xinerama area, then only subtract it from that area's space
 654         for (x = 0; x < screen_num_monitors; ++x) {
 655             GList *it;
 656
 657
 658                do something smart with it for the 'all xinerama areas' one...
 659
 660             for (it = client_list; it; it = it->next) {
 661
 662                 XXX if gunna test this shit, then gotta worry about when
 663                 the client moves between xinerama heads..
 664
 665                 if (RECT_CONTAINS_RECT(((ObClient*)it->data)->frame->area,
 666                                        area[i][x])) {
 667
 668                 }
 669             }
 670         }
 671         */
 672
 673         /* XXX optimize when this is run? */
 674
 675         /* the area has changed, adjust all the maximized
 676            windows */
 677         for (it = client_list; it; it = it->next) {
 678             ObClient *c = it->data;
 679             if (i < screen_num_desktops) {
 680                 if (c->desktop == i)
 681                     client_reconfigure(c);
 682             } else if (c->desktop == DESKTOP_ALL)
 683                 client_reconfigure(c);
 684         }
 685         if (i < screen_num_desktops) {
 686             /* don't set these for the 'all desktops' area */
 687             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
 688             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
 689             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
 690             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
 691         }
 692     }
 693     PROP_SETA32(ob_root, net_workarea, cardinal,
 694                 dims, 4 * screen_num_desktops);
 695
 696     g_free(dims);
 697 }
 698
 699 Rect *screen_area(guint desktop)
 700 {
 701     return screen_area_monitor(desktop, screen_num_monitors);
 702 }
 703
 704 Rect *screen_area_monitor(guint desktop, guint head)
 705 {
 706     if (head > screen_num_monitors)
 707         return NULL;
 708     if (desktop >= screen_num_desktops) {
 709         if (desktop == DESKTOP_ALL)
 710             return &area[screen_num_desktops][head];
 711         return NULL;
 712     }
 713     return &area[desktop][head];
 714 }
 715
 716 Rect *screen_physical_area()
 717 {
 718     return screen_physical_area_monitor(screen_num_monitors);
 719 }
 720
 721 Rect *screen_physical_area_monitor(guint head)
 722 {
 723     if (head > screen_num_monitors)
 724         return NULL;
 725     return &monitor_area[head];
 726 }
 727
 728 static void set_root_cursor()
 729 {
 730 #ifdef USE_LIBSN
 731         if (sn_busy_cnt)
 732             XDefineCursor(ob_display, ob_root, ob_cursor(OB_CURSOR_BUSY));
 733         else
 734 #endif
 735             XDefineCursor(ob_display, ob_root, ob_cursor(OB_CURSOR_POINTER));
 736 }
 737
 738 #ifdef USE_LIBSN
 739 static void sn_timeout(void *data)
 740 {
 741     timer_stop(sn_timer);
 742     sn_timer = NULL;
 743     sn_busy_cnt = 0;
 744
 745     set_root_cursor();
 746 }
 747
 748 static void sn_event_func(SnMonitorEvent *ev, void *data)
 749 {
 750     SnStartupSequence *seq;
 751     const char *seq_id, *bin_name;
 752     int cnt = sn_busy_cnt;
 753
 754     if (!(seq = sn_monitor_event_get_startup_sequence(ev)))
 755         return;
 756
 757     seq_id = sn_startup_sequence_get_id(seq);
 758     bin_name = sn_startup_sequence_get_binary_name(seq);
 759
 760     if (!(seq_id && bin_name))
 761         return;
 762
 763     switch (sn_monitor_event_get_type(ev)) {
 764     case SN_MONITOR_EVENT_INITIATED:
 765         ++sn_busy_cnt;
 766         if (sn_timer)
 767             timer_stop(sn_timer);
 768         /* 30 second timeout for apps to start */
 769         sn_timer = timer_start(30 * 1000000, sn_timeout, NULL);
 770         break;
 771     case SN_MONITOR_EVENT_CHANGED:
 772         break;
 773     case SN_MONITOR_EVENT_COMPLETED:
 774         if (sn_busy_cnt) --sn_busy_cnt;
 775         if (sn_timer) {
 776             timer_stop(sn_timer);
 777             sn_timer = NULL;
 778         }
 779         break;
 780     case SN_MONITOR_EVENT_CANCELED:
 781         if (sn_busy_cnt) --sn_busy_cnt;
 782         if (sn_timer) {
 783             timer_stop(sn_timer);
 784             sn_timer = NULL;
 785         }
 786     };
 787
 788     if (sn_busy_cnt != cnt)
 789         set_root_cursor();
 790 }
 791 #endif