openbox/screen.c

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