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 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, "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 == 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         Client *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             Client *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             Client *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     g_message("switch fallback");
 350     focus_fallback(Fallback_Desktop);
 351     g_message("/switch fallback");
 352
 353     dispatch_ob(Event_Ob_Desktop, num, old);
 354 }
 355
 356 void screen_update_layout()
 357 {
 358     guint32 *data = NULL;
 359     guint num;
 360
 361     /* defaults */
 362     screen_desktop_layout.orientation = prop_atoms.net_wm_orientation_horz;
 363     screen_desktop_layout.start_corner = prop_atoms.net_wm_topleft;
 364     screen_desktop_layout.rows = 1;
 365     screen_desktop_layout.columns = screen_num_desktops;
 366
 367     if (PROP_GETA32(ob_root, net_desktop_layout, cardinal, &data, &num)) {
 368         if (num == 3 || num == 4) {
 369             if (data[0] == prop_atoms.net_wm_orientation_vert)
 370                 screen_desktop_layout.orientation = data[0];
 371             if (num == 3)
 372                 screen_desktop_layout.start_corner =
 373                     prop_atoms.net_wm_topright;
 374             else {
 375                 if (data[3] == prop_atoms.net_wm_topright)
 376                     screen_desktop_layout.start_corner = data[3];
 377                 else if (data[3] == prop_atoms.net_wm_bottomright)
 378                     screen_desktop_layout.start_corner = data[3];
 379                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 380                     screen_desktop_layout.start_corner = data[3];
 381             }
 382
 383             /* fill in a zero rows/columns */
 384             if (!(data[1] == 0 && data[2] == 0)) { /* both 0's is bad data.. */
 385                 if (data[1] == 0) {
 386                     data[1] = (screen_num_desktops +
 387                                screen_num_desktops % data[2]) / data[2];
 388                 } else if (data[2] == 0) {
 389                     data[2] = (screen_num_desktops +
 390                                screen_num_desktops % data[1]) / data[1];
 391                 }
 392                 screen_desktop_layout.columns = data[1];
 393                 screen_desktop_layout.rows = data[2];
 394             }
 395
 396             /* bounds checking */
 397             if (screen_desktop_layout.orientation ==
 398                 prop_atoms.net_wm_orientation_horz) {
 399                 if (screen_desktop_layout.rows > screen_num_desktops)
 400                     screen_desktop_layout.rows = screen_num_desktops;
 401                 if (screen_desktop_layout.columns >
 402                     ((screen_num_desktops + screen_num_desktops %
 403                       screen_desktop_layout.rows) /
 404                      screen_desktop_layout.rows))
 405                     screen_desktop_layout.columns =
 406                         (screen_num_desktops + screen_num_desktops %
 407                          screen_desktop_layout.rows) /
 408                         screen_desktop_layout.rows;
 409             } else {
 410                 if (screen_desktop_layout.columns > screen_num_desktops)
 411                     screen_desktop_layout.columns = screen_num_desktops;
 412                 if (screen_desktop_layout.rows >
 413                     ((screen_num_desktops + screen_num_desktops %
 414                       screen_desktop_layout.columns) /
 415                      screen_desktop_layout.columns))
 416                     screen_desktop_layout.rows =
 417                         (screen_num_desktops + screen_num_desktops %
 418                          screen_desktop_layout.columns) /
 419                         screen_desktop_layout.columns;
 420             }
 421         }
 422         g_free(data);
 423     }
 424 }
 425
 426 void screen_update_desktop_names()
 427 {
 428     guint i;
 429
 430     /* empty the array */
 431     g_strfreev(screen_desktop_names);
 432     screen_desktop_names = NULL;
 433
 434     if (PROP_GETSS(ob_root, net_desktop_names, utf8, &screen_desktop_names))
 435         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 436     else
 437         i = 0;
 438     if (i <= screen_num_desktops) {
 439         screen_desktop_names = g_renew(char*, screen_desktop_names,
 440                                        screen_num_desktops + 1);
 441         screen_desktop_names[screen_num_desktops] = NULL;
 442         for (; i < screen_num_desktops; ++i)
 443             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 444     }
 445 }
 446
 447 void screen_show_desktop(gboolean show)
 448 {
 449     GList *it;
 450
 451     if (show == screen_showing_desktop) return; /* no change */
 452
 453     screen_showing_desktop = show;
 454
 455     if (show) {
 456         /* bottom to top */
 457         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 458             if (WINDOW_IS_CLIENT(it->data)) {
 459                 Client *client = it->data;
 460                 if (client->frame->visible && !client_should_show(client))
 461                     frame_hide(client->frame);
 462             }
 463         }
 464     } else {
 465         /* top to bottom */
 466         for (it = stacking_list; it != NULL; it = it->next) {
 467             if (WINDOW_IS_CLIENT(it->data)) {
 468                 Client *client = it->data;
 469                 if (!client->frame->visible && client_should_show(client))
 470                     frame_show(client->frame);
 471             }
 472         }
 473     }
 474
 475     if (show) {
 476         /* focus desktop */
 477         for (it = focus_order[screen_desktop]; it; it = it->next)
 478             if (((Client*)it->data)->type == Type_Desktop &&
 479                 client_focus(it->data))
 480                 break;
 481     } else {
 482         focus_fallback(Fallback_NoFocus);
 483     }
 484
 485     show = !!show; /* make it boolean */
 486     PROP_SET32(ob_root, net_showing_desktop, cardinal, show);
 487
 488     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 489 }
 490
 491 void screen_install_colormap(Client *client, gboolean install)
 492 {
 493     XWindowAttributes wa;
 494
 495     if (client == NULL) {
 496         if (install)
 497             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 498         else
 499             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 500     } else {
 501         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 502             wa.colormap != None) {
 503             xerror_set_ignore(TRUE);
 504             if (install)
 505                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 506             else
 507                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 508             xerror_set_ignore(FALSE);
 509         }
 510     }
 511 }
 512
 513 void screen_update_areas()
 514 {
 515     guint i, x;
 516     guint32 *dims;
 517     Rect **old_area = area;
 518     Rect **rit;
 519     GList *it;
 520
 521     g_free(monitor_area);
 522     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
 523
 524     if (area) {
 525         for (i = 0; area[i]; ++i)
 526             g_free(area[i]);
 527         g_free(area);
 528     }
 529
 530     area = g_new(Rect*, screen_num_desktops + 2);
 531     for (i = 0; i < screen_num_desktops + 1; ++i)
 532         area[i] = g_new(Rect, screen_num_monitors + 1);
 533     area[i] = NULL;
 534
 535     dims = g_new(guint32, 4 * screen_num_desktops);
 536
 537     rit = old_area;
 538     for (i = 0; i < screen_num_desktops + 1; ++i) {
 539         Strut s;
 540         int l, r, t, b;
 541
 542         /* calc the xinerama areas */
 543         for (x = 0; x < screen_num_monitors; ++x) {
 544             area[i][x] = monitor_area[x];
 545             if (x == 0) {
 546                 l = monitor_area[x].x;
 547                 t = monitor_area[x].y;
 548                 r = monitor_area[x].x + monitor_area[x].width - 1;
 549                 b = monitor_area[x].y + monitor_area[x].height - 1;
 550             } else {
 551                 l = MIN(l, monitor_area[x].x);
 552                 t = MIN(t, monitor_area[x].y);
 553                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
 554                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
 555             }
 556         }
 557         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
 558
 559         /* apply struts */
 560         STRUT_SET(s, 0, 0, 0, 0);
 561         for (it = client_list; it; it = it->next)
 562             STRUT_ADD(s, ((Client*)it->data)->strut);
 563         STRUT_ADD(s, dock_strut);
 564
 565         if (s.left) {
 566             int o;
 567
 568             /* find the left-most xin heads, i do this in 2 loops :| */
 569             o = area[i][0].x;
 570             for (x = 1; x < screen_num_monitors; ++x)
 571                 o = MIN(o, area[i][x].x);
 572
 573             for (x = 0; x < screen_num_monitors; ++x) {
 574                 int edge = o + s.left - area[i][x].x;
 575                 if (edge > 0) {
 576                     area[i][x].x += edge;
 577                     area[i][x].width -= edge;
 578                 }
 579             }
 580
 581             area[i][screen_num_monitors].x += s.left;
 582             area[i][screen_num_monitors].width -= s.left;
 583         }
 584         if (s.top) {
 585             int o;
 586
 587             /* find the left-most xin heads, i do this in 2 loops :| */
 588             o = area[i][0].y;
 589             for (x = 1; x < screen_num_monitors; ++x)
 590                 o = MIN(o, area[i][x].y);
 591
 592             for (x = 0; x < screen_num_monitors; ++x) {
 593                 int edge = o + s.top - area[i][x].y;
 594                 if (edge > 0) {
 595                     area[i][x].y += edge;
 596                     area[i][x].height -= edge;
 597                 }
 598             }
 599
 600             area[i][screen_num_monitors].y += s.top;
 601             area[i][screen_num_monitors].height -= s.top;
 602         }
 603         if (s.right) {
 604             int o;
 605
 606             /* find the bottom-most xin heads, i do this in 2 loops :| */
 607             o = area[i][0].x + area[i][0].width - 1;
 608             for (x = 1; x < screen_num_monitors; ++x)
 609                 o = MAX(o, area[i][x].x + area[i][x].width - 1);
 610
 611             for (x = 0; x < screen_num_monitors; ++x) {
 612                 int edge = (area[i][x].x + area[i][x].width - 1) -
 613                     (o - s.right);
 614                 if (edge > 0)
 615                     area[i][x].width -= edge;
 616             }
 617
 618             area[i][screen_num_monitors].width -= s.right;
 619         }
 620         if (s.bottom) {
 621             int o;
 622
 623             /* find the bottom-most xin heads, i do this in 2 loops :| */
 624             o = area[i][0].y + area[i][0].height - 1;
 625             for (x = 1; x < screen_num_monitors; ++x)
 626                 o = MAX(o, area[i][x].y + area[i][x].height - 1);
 627
 628             for (x = 0; x < screen_num_monitors; ++x) {
 629                 int edge = (area[i][x].y + area[i][x].height - 1) -
 630                     (o - s.bottom);
 631                 if (edge > 0)
 632                     area[i][x].height -= edge;
 633             }
 634
 635             area[i][screen_num_monitors].height -= s.bottom;
 636         }
 637
 638         /* XXX when dealing with partial struts, if its in a single
 639            xinerama area, then only subtract it from that area's space
 640         for (x = 0; x < screen_num_monitors; ++x) {
 641             GList *it;
 642
 643
 644                do something smart with it for the 'all xinerama areas' one...
 645
 646             for (it = client_list; it; it = it->next) {
 647
 648                 XXX if gunna test this shit, then gotta worry about when
 649                 the client moves between xinerama heads..
 650
 651                 if (RECT_CONTAINS_RECT(((Client*)it->data)->frame->area,
 652                                        area[i][x])) {
 653
 654                 }
 655             }
 656         }
 657         */
 658
 659         /* XXX optimize when this is run? */
 660
 661         /* the area has changed, adjust all the maximized
 662            windows */
 663         for (it = client_list; it; it = it->next) {
 664             Client *c = it->data;
 665             if (i < screen_num_desktops) {
 666                 if (c->desktop == i)
 667                     client_reconfigure(c);
 668             } else if (c->desktop == DESKTOP_ALL)
 669                 client_reconfigure(c);
 670         }
 671         if (i < screen_num_desktops) {
 672             /* don't set these for the 'all desktops' area */
 673             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
 674             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
 675             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
 676             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
 677         }
 678     }
 679     PROP_SETA32(ob_root, net_workarea, cardinal,
 680                 dims, 4 * screen_num_desktops);
 681
 682     g_free(dims);
 683 }
 684
 685 Rect *screen_area(guint desktop)
 686 {
 687     return screen_area_monitor(desktop, screen_num_monitors);
 688 }
 689
 690 Rect *screen_area_monitor(guint desktop, guint head)
 691 {
 692     if (head > screen_num_monitors)
 693         return NULL;
 694     if (desktop >= screen_num_desktops) {
 695         if (desktop == DESKTOP_ALL)
 696             return &area[screen_num_desktops][head];
 697         return NULL;
 698     }
 699     return &area[desktop][head];
 700 }
 701
 702 Rect *screen_physical_area()
 703 {
 704     return screen_physical_area_monitor(screen_num_monitors);
 705 }
 706
 707 Rect *screen_physical_area_monitor(guint head)
 708 {
 709     if (head > screen_num_monitors)
 710         return NULL;
 711     return &monitor_area[head];
 712 }
 713
 714 static void set_root_cursor()
 715 {
 716 #ifdef USE_LIBSN
 717         if (sn_busy_cnt)
 718             XDefineCursor(ob_display, ob_root, ob_cursors.busy);
 719         else
 720 #endif
 721             XDefineCursor(ob_display, ob_root, ob_cursors.ptr);
 722 }
 723
 724 #ifdef USE_LIBSN
 725 static void sn_timeout(void *data)
 726 {
 727     timer_stop(sn_timer);
 728     sn_timer = NULL;
 729     sn_busy_cnt = 0;
 730
 731     set_root_cursor();
 732 }
 733
 734 static void sn_event_func(SnMonitorEvent *ev, void *data)
 735 {
 736     SnStartupSequence *seq;
 737     const char *seq_id, *bin_name;
 738     int cnt = sn_busy_cnt;
 739
 740     if (!(seq = sn_monitor_event_get_startup_sequence(ev)))
 741         return;
 742
 743     seq_id = sn_startup_sequence_get_id(seq);
 744     bin_name = sn_startup_sequence_get_binary_name(seq);
 745
 746     if (!(seq_id && bin_name))
 747         return;
 748
 749     switch (sn_monitor_event_get_type(ev)) {
 750     case SN_MONITOR_EVENT_INITIATED:
 751         ++sn_busy_cnt;
 752         if (sn_timer)
 753             timer_stop(sn_timer);
 754         /* 30 second timeout for apps to start */
 755         sn_timer = timer_start(30 * 1000000, sn_timeout, NULL);
 756         break;
 757     case SN_MONITOR_EVENT_CHANGED:
 758         break;
 759     case SN_MONITOR_EVENT_COMPLETED:
 760         if (sn_busy_cnt) --sn_busy_cnt;
 761         if (sn_timer) {
 762             timer_stop(sn_timer);
 763             sn_timer = NULL;
 764         }
 765         break;
 766     case SN_MONITOR_EVENT_CANCELED:
 767         if (sn_busy_cnt) --sn_busy_cnt;
 768         if (sn_timer) {
 769             timer_stop(sn_timer);
 770             sn_timer = NULL;
 771         }
 772     };
 773
 774     if (sn_busy_cnt != cnt)
 775         set_root_cursor();
 776 }
 777 #endif