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