openbox/screen.c

   1 #include "debug.h"
   2 #include "openbox.h"
   3 #include "mainloop.h"
   4 #include "dock.h"
   5 #include "xerror.h"
   6 #include "prop.h"
   7 #include "startup.h"
   8 #include "grab.h"
   9 #include "config.h"
  10 #include "screen.h"
  11 #include "client.h"
  12 #include "frame.h"
  13 #include "focus.h"
  14 #include "popup.h"
  15 #include "extensions.h"
  16 #include "render/render.h"
  17
  18 #ifdef USE_LIBSN
  19 #  define SN_API_NOT_YET_FROZEN
  20 #  include <libsn/sn.h>
  21 #endif
  22
  23 #include <X11/Xlib.h>
  24 #ifdef HAVE_UNISTD_H
  25 #  include <sys/types.h>
  26 #  include <unistd.h>
  27 #endif
  28 #include <assert.h>
  29
  30 /*! The event mask to grab on the root window */
  31 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
  32                         EnterWindowMask | LeaveWindowMask | \
  33                         SubstructureNotifyMask | SubstructureRedirectMask | \
  34                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  35
  36 guint    screen_num_desktops;
  37 guint    screen_num_monitors;
  38 guint    screen_desktop;
  39 guint    screen_last_desktop;
  40 Size     screen_physical_size;
  41 gboolean screen_showing_desktop;
  42 DesktopLayout screen_desktop_layout;
  43 char   **screen_desktop_names;
  44 Window   screen_support_win;
  45
  46 static Rect  **area; /* array of desktop holding array of xinerama areas */
  47 static Rect  *monitor_area;
  48
  49 static Popup *desktop_cycle_popup;
  50
  51 #ifdef USE_LIBSN
  52 static SnMonitorContext *sn_context;
  53 static int sn_busy_cnt;
  54
  55 static void sn_event_func(SnMonitorEvent *event, void *data);
  56 #endif
  57
  58 static void set_root_cursor();
  59
  60 static gboolean replace_wm()
  61 {
  62     char *wm_sn;
  63     Atom wm_sn_atom;
  64     Window current_wm_sn_owner;
  65     Time timestamp;
  66
  67     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
  68     wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
  69     g_free(wm_sn);
  70
  71     current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
  72     if (current_wm_sn_owner) {
  73         if (!ob_replace_wm) {
  74             g_warning("A window manager is already running on screen %d",
  75                       ob_screen);
  76             return FALSE;
  77         }
  78         xerror_set_ignore(TRUE);
  79         xerror_occured = FALSE;
  80
  81         /* We want to find out when the current selection owner dies */
  82         XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
  83         XSync(ob_display, FALSE);
  84
  85         xerror_set_ignore(FALSE);
  86         if (xerror_occured)
  87             current_wm_sn_owner = None;
  88     }
  89
  90     {
  91         /* Generate a timestamp */
  92         XEvent event;
  93
  94         XSelectInput(ob_display, screen_support_win, PropertyChangeMask);
  95
  96         XChangeProperty(ob_display, screen_support_win,
  97                         prop_atoms.wm_class, prop_atoms.string,
  98                         8, PropModeAppend, NULL, 0);
  99         XWindowEvent(ob_display, screen_support_win,
 100                      PropertyChangeMask, &event);
 101
 102         XSelectInput(ob_display, screen_support_win, NoEventMask);
 103
 104         timestamp = event.xproperty.time;
 105     }
 106
 107     XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
 108                        timestamp);
 109
 110     if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
 111         g_warning("Could not acquire window manager selection on screen %d",
 112                   ob_screen);
 113         return FALSE;
 114     }
 115
 116     /* Wait for old window manager to go away */
 117     if (current_wm_sn_owner) {
 118       XEvent event;
 119       gulong wait = 0;
 120       const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
 121
 122       while (wait < timeout) {
 123           if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
 124                                 StructureNotifyMask, &event) &&
 125               event.type == DestroyNotify)
 126               break;
 127           g_usleep(G_USEC_PER_SEC / 10);
 128           wait += G_USEC_PER_SEC / 10;
 129       }
 130
 131       if (wait >= timeout) {
 132           g_warning("Timeout expired while waiting for the current WM to die "
 133                     "on screen %d", ob_screen);
 134           return FALSE;
 135       }
 136     }
 137
 138     /* Send client message indicating that we are now the WM */
 139     prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
 140                  timestamp, wm_sn_atom, 0, 0, SubstructureNotifyMask);
 141
 142
 143     return TRUE;
 144 }
 145
 146 gboolean screen_annex()
 147 {
 148     XSetWindowAttributes attrib;
 149     pid_t pid;
 150     gint i, num_support;
 151     guint32 *supported;
 152
 153     /* create the netwm support window */
 154     attrib.override_redirect = TRUE;
 155     screen_support_win = XCreateWindow(ob_display,
 156                                        RootWindow(ob_display, ob_screen),
 157                                        -100, -100, 1, 1, 0,
 158                                        CopyFromParent, InputOutput,
 159                                        CopyFromParent,
 160                                        CWOverrideRedirect, &attrib);
 161     XMapRaised(ob_display, screen_support_win);
 162
 163     if (!replace_wm()) {
 164         XDestroyWindow(ob_display, screen_support_win);
 165         return FALSE;
 166     }
 167
 168     xerror_set_ignore(TRUE);
 169     xerror_occured = FALSE;
 170     XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
 171                  ROOT_EVENTMASK);
 172     xerror_set_ignore(FALSE);
 173     if (xerror_occured) {
 174         g_warning("A window manager is already running on screen %d",
 175                   ob_screen);
 176
 177         XDestroyWindow(ob_display, screen_support_win);
 178         return FALSE;
 179     }
 180
 181
 182     set_root_cursor();
 183
 184     /* set the OPENBOX_PID hint */
 185     pid = getpid();
 186     PROP_SET32(RootWindow(ob_display, ob_screen),
 187                openbox_pid, cardinal, pid);
 188
 189     /* set supporting window */
 190     PROP_SET32(RootWindow(ob_display, ob_screen),
 191                net_supporting_wm_check, window, screen_support_win);
 192
 193     /* set properties on the supporting window */
 194     PROP_SETS(screen_support_win, net_wm_name, "Openbox");
 195     PROP_SET32(screen_support_win, net_supporting_wm_check,
 196                window, screen_support_win);
 197
 198     /* set the _NET_SUPPORTED_ATOMS hint */
 199     num_support = 50;
 200     i = 0;
 201     supported = g_new(guint32, num_support);
 202     supported[i++] = prop_atoms.net_current_desktop;
 203     supported[i++] = prop_atoms.net_number_of_desktops;
 204     supported[i++] = prop_atoms.net_desktop_geometry;
 205     supported[i++] = prop_atoms.net_desktop_viewport;
 206     supported[i++] = prop_atoms.net_active_window;
 207     supported[i++] = prop_atoms.net_workarea;
 208     supported[i++] = prop_atoms.net_client_list;
 209     supported[i++] = prop_atoms.net_client_list_stacking;
 210     supported[i++] = prop_atoms.net_desktop_names;
 211     supported[i++] = prop_atoms.net_close_window;
 212     supported[i++] = prop_atoms.net_desktop_layout;
 213     supported[i++] = prop_atoms.net_showing_desktop;
 214     supported[i++] = prop_atoms.net_wm_name;
 215     supported[i++] = prop_atoms.net_wm_visible_name;
 216     supported[i++] = prop_atoms.net_wm_icon_name;
 217     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 218     supported[i++] = prop_atoms.net_wm_desktop;
 219     supported[i++] = prop_atoms.net_wm_strut;
 220     supported[i++] = prop_atoms.net_wm_window_type;
 221     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 222     supported[i++] = prop_atoms.net_wm_window_type_dock;
 223     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 224     supported[i++] = prop_atoms.net_wm_window_type_menu;
 225     supported[i++] = prop_atoms.net_wm_window_type_utility;
 226     supported[i++] = prop_atoms.net_wm_window_type_splash;
 227     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 228     supported[i++] = prop_atoms.net_wm_window_type_normal;
 229     supported[i++] = prop_atoms.net_wm_allowed_actions;
 230     supported[i++] = prop_atoms.net_wm_action_move;
 231     supported[i++] = prop_atoms.net_wm_action_resize;
 232     supported[i++] = prop_atoms.net_wm_action_minimize;
 233     supported[i++] = prop_atoms.net_wm_action_shade;
 234     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 235     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 236     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 237     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 238     supported[i++] = prop_atoms.net_wm_action_close;
 239     supported[i++] = prop_atoms.net_wm_state;
 240     supported[i++] = prop_atoms.net_wm_state_modal;
 241     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 242     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 243     supported[i++] = prop_atoms.net_wm_state_shaded;
 244     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 245     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 246     supported[i++] = prop_atoms.net_wm_state_hidden;
 247     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 248     supported[i++] = prop_atoms.net_wm_state_above;
 249     supported[i++] = prop_atoms.net_wm_state_below;
 250     supported[i++] = prop_atoms.net_moveresize_window;
 251     supported[i++] = prop_atoms.net_wm_moveresize;
 252     g_assert(i == num_support);
 253 /*
 254   supported[] = prop_atoms.net_wm_action_stick;
 255 */
 256
 257     PROP_SETA32(RootWindow(ob_display, ob_screen),
 258                 net_supported, atom, supported, num_support);
 259     g_free(supported);
 260
 261     return TRUE;
 262 }
 263
 264 void screen_startup(gboolean reconfig)
 265 {
 266     GSList *it;
 267     guint i;
 268
 269     desktop_cycle_popup = popup_new(FALSE);
 270
 271     if (!reconfig)
 272         /* get the initial size */
 273         screen_resize();
 274
 275     /* set the names */
 276     screen_desktop_names = g_new(char*,
 277                                  g_slist_length(config_desktops_names) + 1);
 278     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 279         screen_desktop_names[i] = it->data; /* dont strdup */
 280     screen_desktop_names[i] = NULL;
 281     PROP_SETSS(RootWindow(ob_display, ob_screen),
 282                net_desktop_names, screen_desktop_names);
 283     g_free(screen_desktop_names); /* dont free the individual strings */
 284     screen_desktop_names = NULL;
 285
 286     if (!reconfig)
 287         screen_num_desktops = 0;
 288     screen_set_num_desktops(config_desktops_num);
 289     if (!reconfig) {
 290         if (startup_desktop >= screen_num_desktops)
 291             startup_desktop = 0;
 292         screen_desktop = startup_desktop;
 293         screen_set_desktop(startup_desktop);
 294
 295         /* don't start in showing-desktop mode */
 296         screen_showing_desktop = FALSE;
 297         PROP_SET32(RootWindow(ob_display, ob_screen),
 298                    net_showing_desktop, cardinal, screen_showing_desktop);
 299
 300         screen_update_layout();
 301
 302 #ifdef USE_LIBSN
 303         sn_context = sn_monitor_context_new(ob_sn_display, ob_screen,
 304                                             sn_event_func, NULL, NULL);
 305         sn_busy_cnt = 0;
 306 #endif
 307     }
 308 }
 309
 310 void screen_shutdown(gboolean reconfig)
 311 {
 312     Rect **r;
 313
 314     popup_free(desktop_cycle_popup);
 315
 316     if (!reconfig) {
 317 #ifdef USE_LIBSN
 318         sn_monitor_context_unref(sn_context);
 319 #endif
 320
 321         XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
 322                      NoEventMask);
 323
 324         /* we're not running here no more! */
 325         PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
 326         /* not without us */
 327         PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
 328         /* don't keep this mode */
 329         PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
 330
 331         XDestroyWindow(ob_display, screen_support_win);
 332     }
 333
 334     g_strfreev(screen_desktop_names);
 335     screen_desktop_names = NULL;
 336     for (r = area; *r; ++r)
 337         g_free(*r);
 338     g_free(area);
 339     area = NULL;
 340 }
 341
 342 void screen_resize()
 343 {
 344     static int oldw = 0, oldh = 0;
 345     int w, h;
 346     GList *it;
 347     guint32 geometry[2];
 348
 349     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 350     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 351
 352     if (w == oldw && h == oldh) return;
 353
 354     oldw = w; oldh = h;
 355
 356     /* Set the _NET_DESKTOP_GEOMETRY hint */
 357     screen_physical_size.width = geometry[0] = w;
 358     screen_physical_size.height = geometry[1] = h;
 359     PROP_SETA32(RootWindow(ob_display, ob_screen),
 360                 net_desktop_geometry, cardinal, geometry, 2);
 361
 362     if (ob_state() == OB_STATE_STARTING)
 363         return;
 364
 365     screen_update_areas();
 366     dock_configure();
 367
 368     for (it = client_list; it; it = it->next)
 369         client_move_onscreen(it->data, FALSE);
 370 }
 371
 372 void screen_set_num_desktops(guint num)
 373 {
 374     guint i, old;
 375     guint32 *viewport;
 376     GList *it;
 377
 378     g_assert(num > 0);
 379
 380     old = screen_num_desktops;
 381     screen_num_desktops = num;
 382     PROP_SET32(RootWindow(ob_display, ob_screen),
 383                net_number_of_desktops, cardinal, num);
 384
 385     /* set the viewport hint */
 386     viewport = g_new0(guint32, num * 2);
 387     PROP_SETA32(RootWindow(ob_display, ob_screen),
 388                 net_desktop_viewport, cardinal, viewport, num * 2);
 389     g_free(viewport);
 390
 391     /* the number of rows/columns will differ */
 392     screen_update_layout();
 393
 394     /* may be some unnamed desktops that we need to fill in with names */
 395     screen_update_desktop_names();
 396
 397     /* update the focus lists */
 398     /* free our lists for the desktops which have disappeared */
 399     for (i = num; i < old; ++i)
 400         g_list_free(focus_order[i]);
 401     /* realloc the array */
 402     focus_order = g_renew(GList*, focus_order, num);
 403     /* set the new lists to be empty */
 404     for (i = old; i < num; ++i)
 405         focus_order[i] = NULL;
 406
 407     /* move windows on desktops that will no longer exist! */
 408     for (it = client_list; it != NULL; it = it->next) {
 409         ObClient *c = it->data;
 410         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
 411             client_set_desktop(c, num - 1, FALSE);
 412     }
 413
 414     /* change our struts/area to match (after moving windows) */
 415     screen_update_areas();
 416
 417     /* change our desktop if we're on one that no longer exists! */
 418     if (screen_desktop >= screen_num_desktops)
 419         screen_set_desktop(num - 1);
 420 }
 421
 422 void screen_set_desktop(guint num)
 423 {
 424     GList *it;
 425     guint old;
 426     XEvent e;
 427
 428     g_assert(num < screen_num_desktops);
 429
 430     old = screen_desktop;
 431     screen_desktop = num;
 432     PROP_SET32(RootWindow(ob_display, ob_screen),
 433                net_current_desktop, cardinal, num);
 434
 435     if (old == num) return;
 436
 437     screen_last_desktop = old;
 438
 439     ob_debug("Moving to desktop %d\n", num+1);
 440
 441     /* show windows before hiding the rest to lessen the enter/leave events */
 442
 443     /* show windows from top to bottom */
 444     for (it = stacking_list; it != NULL; it = it->next) {
 445         if (WINDOW_IS_CLIENT(it->data)) {
 446             ObClient *c = it->data;
 447             if (!c->frame->visible && client_should_show(c))
 448                 frame_show(c->frame);
 449         }
 450     }
 451
 452     /* hide windows from bottom to top */
 453     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 454         if (WINDOW_IS_CLIENT(it->data)) {
 455             ObClient *c = it->data;
 456             if (c->frame->visible && !client_should_show(c))
 457                 frame_hide(c->frame);
 458         }
 459     }
 460
 461     /* focus the last focused window on the desktop, and ignore enter events
 462        from the switch so it doesnt mess with the focus */
 463     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 464 #ifdef DEBUG_FOCUS
 465     ob_debug("switch fallback\n");
 466 #endif
 467     focus_fallback(OB_FOCUS_FALLBACK_DESKTOP);
 468 #ifdef DEBUG_FOCUS
 469     ob_debug("/switch fallback\n");
 470 #endif
 471 }
 472
 473 static void get_row_col(guint d, guint *r, guint *c)
 474 {
 475     switch (screen_desktop_layout.orientation) {
 476     case OB_ORIENTATION_HORZ:
 477         switch (screen_desktop_layout.start_corner) {
 478         case OB_CORNER_TOPLEFT:
 479             *r = d / screen_desktop_layout.columns;
 480             *c = d % screen_desktop_layout.columns;
 481             break;
 482         case OB_CORNER_BOTTOMLEFT:
 483             *r = screen_desktop_layout.rows - 1 -
 484                 d / screen_desktop_layout.columns;
 485             *c = d % screen_desktop_layout.columns;
 486             break;
 487         case OB_CORNER_TOPRIGHT:
 488             *r = d / screen_desktop_layout.columns;
 489             *c = screen_desktop_layout.columns - 1 -
 490                 d % screen_desktop_layout.columns;
 491             break;
 492         case OB_CORNER_BOTTOMRIGHT:
 493             *r = screen_desktop_layout.rows - 1 -
 494                 d / screen_desktop_layout.columns;
 495             *c = screen_desktop_layout.columns - 1 -
 496                 d % screen_desktop_layout.columns;
 497             break;
 498         }
 499         break;
 500     case OB_ORIENTATION_VERT:
 501         switch (screen_desktop_layout.start_corner) {
 502         case OB_CORNER_TOPLEFT:
 503             *r = d % screen_desktop_layout.rows;
 504             *c = d / screen_desktop_layout.rows;
 505             break;
 506         case OB_CORNER_BOTTOMLEFT:
 507             *r = screen_desktop_layout.rows - 1 -
 508                 d % screen_desktop_layout.rows;
 509             *c = d / screen_desktop_layout.rows;
 510             break;
 511         case OB_CORNER_TOPRIGHT:
 512             *r = d % screen_desktop_layout.rows;
 513             *c = screen_desktop_layout.columns - 1 -
 514                 d / screen_desktop_layout.rows;
 515             break;
 516         case OB_CORNER_BOTTOMRIGHT:
 517             *r = screen_desktop_layout.rows - 1 -
 518                 d % screen_desktop_layout.rows;
 519             *c = screen_desktop_layout.columns - 1 -
 520                 d / screen_desktop_layout.rows;
 521             break;
 522         }
 523         break;
 524     }
 525 }
 526
 527 static guint translate_row_col(guint r, guint c)
 528 {
 529     switch (screen_desktop_layout.orientation) {
 530     case OB_ORIENTATION_HORZ:
 531         switch (screen_desktop_layout.start_corner) {
 532         case OB_CORNER_TOPLEFT:
 533             return r % screen_desktop_layout.rows *
 534                 screen_desktop_layout.columns +
 535                 c % screen_desktop_layout.columns;
 536         case OB_CORNER_BOTTOMLEFT:
 537             return (screen_desktop_layout.rows - 1 -
 538                     r % screen_desktop_layout.rows) *
 539                 screen_desktop_layout.columns +
 540                 c % screen_desktop_layout.columns;
 541         case OB_CORNER_TOPRIGHT:
 542             return r % screen_desktop_layout.rows *
 543                 screen_desktop_layout.columns +
 544                 (screen_desktop_layout.columns - 1 -
 545                  c % screen_desktop_layout.columns);
 546         case OB_CORNER_BOTTOMRIGHT:
 547             return (screen_desktop_layout.rows - 1 -
 548                     r % screen_desktop_layout.rows) *
 549                 screen_desktop_layout.columns +
 550                 (screen_desktop_layout.columns - 1 -
 551                  c % screen_desktop_layout.columns);
 552         }
 553     case OB_ORIENTATION_VERT:
 554         switch (screen_desktop_layout.start_corner) {
 555         case OB_CORNER_TOPLEFT:
 556             return c % screen_desktop_layout.columns *
 557                 screen_desktop_layout.rows +
 558                 r % screen_desktop_layout.rows;
 559         case OB_CORNER_BOTTOMLEFT:
 560             return c % screen_desktop_layout.columns *
 561                 screen_desktop_layout.rows +
 562                 (screen_desktop_layout.rows - 1 -
 563                  r % screen_desktop_layout.rows);
 564         case OB_CORNER_TOPRIGHT:
 565             return (screen_desktop_layout.columns - 1 -
 566                     c % screen_desktop_layout.columns) *
 567                 screen_desktop_layout.rows +
 568                 r % screen_desktop_layout.rows;
 569         case OB_CORNER_BOTTOMRIGHT:
 570             return (screen_desktop_layout.columns - 1 -
 571                     c % screen_desktop_layout.columns) *
 572                 screen_desktop_layout.rows +
 573                 (screen_desktop_layout.rows - 1 -
 574                  r % screen_desktop_layout.rows);
 575         }
 576     }
 577     g_assert_not_reached();
 578     return 0;
 579 }
 580
 581 static void popup_cycle(guint d, gboolean show)
 582 {
 583     Rect *a;
 584
 585     if (!show) {
 586         popup_hide(desktop_cycle_popup);
 587     } else {
 588         a = screen_physical_area_monitor(0);
 589         popup_position(desktop_cycle_popup, CenterGravity,
 590                        a->x + a->width / 2, a->y + a->height / 2);
 591         /* XXX the size and the font extents need to be related on some level
 592          */
 593         popup_size(desktop_cycle_popup, POPUP_WIDTH, POPUP_HEIGHT);
 594
 595         popup_set_text_align(desktop_cycle_popup, RR_JUSTIFY_CENTER);
 596
 597         popup_show(desktop_cycle_popup,
 598                    screen_desktop_names[d], NULL);
 599     }
 600 }
 601
 602 guint screen_cycle_desktop(ObDirection dir, gboolean wrap, gboolean linear,
 603                            gboolean dialog, gboolean done, gboolean cancel)
 604 {
 605     static gboolean first = TRUE;
 606     static gboolean lin;
 607     static guint origd, d;
 608     guint r, c;
 609
 610     if (cancel) {
 611         d = origd;
 612         goto done_cycle;
 613     } else if (done && dialog) {
 614         goto done_cycle;
 615     }
 616     if (first) {
 617         first = FALSE;
 618         lin = linear;
 619         d = origd = screen_desktop;
 620     }
 621
 622     get_row_col(d, &r, &c);
 623
 624     if (lin) {
 625         switch (dir) {
 626         case OB_DIRECTION_EAST:
 627             if (d < screen_num_desktops - 1)
 628                 ++d;
 629             else if (wrap)
 630                 d = 0;
 631             break;
 632         case OB_DIRECTION_WEST:
 633             if (d > 0)
 634                 --d;
 635             else if (wrap)
 636                 d = screen_num_desktops - 1;
 637             break;
 638         default:
 639             assert(0);
 640             return screen_desktop;
 641         }
 642     } else {
 643         switch (dir) {
 644         case OB_DIRECTION_EAST:
 645             ++c;
 646             if (c >= screen_desktop_layout.columns) {
 647                 if (!wrap) return d = screen_desktop;
 648                 c = 0;
 649             }
 650             d = translate_row_col(r, c);
 651             if (d >= screen_num_desktops) {
 652                 if (!wrap) return d = screen_desktop;
 653                 ++c;
 654             }
 655             break;
 656         case OB_DIRECTION_WEST:
 657             --c;
 658             if (c >= screen_desktop_layout.columns) {
 659                 if (!wrap) return d = screen_desktop;
 660                 c = screen_desktop_layout.columns - 1;
 661             }
 662             d = translate_row_col(r, c);
 663             if (d >= screen_num_desktops) {
 664                 if (!wrap) return d = screen_desktop;
 665                 --c;
 666             }
 667             break;
 668         case OB_DIRECTION_SOUTH:
 669             ++r;
 670             if (r >= screen_desktop_layout.rows) {
 671                 if (!wrap) return d = screen_desktop;
 672                 r = 0;
 673             }
 674             d = translate_row_col(r, c);
 675             if (d >= screen_num_desktops) {
 676                 if (!wrap) return d = screen_desktop;
 677                 ++r;
 678             }
 679             break;
 680         case OB_DIRECTION_NORTH:
 681             --r;
 682             if (r >= screen_desktop_layout.rows) {
 683                 if (!wrap) return d = screen_desktop;
 684                 r = screen_desktop_layout.rows - 1;
 685             }
 686             d = translate_row_col(r, c);
 687             if (d >= screen_num_desktops) {
 688                 if (!wrap) return d = screen_desktop;
 689                 --r;
 690             }
 691             break;
 692         default:
 693             assert(0);
 694             return d = screen_desktop;
 695         }
 696
 697         d = translate_row_col(r, c);
 698     }
 699
 700     if (dialog) {
 701         popup_cycle(d, TRUE);
 702         return d;
 703     }
 704
 705 done_cycle:
 706     first = TRUE;
 707
 708     popup_cycle(0, FALSE);
 709
 710     return d;
 711 }
 712
 713 void screen_update_layout()
 714 {
 715     ObOrientation orient;
 716     ObCorner corner;
 717     guint rows;
 718     guint cols;
 719     guint32 *data;
 720     guint num;
 721     gboolean valid = FALSE;
 722
 723     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
 724                     net_desktop_layout, cardinal, &data, &num)) {
 725         if (num == 3 || num == 4) {
 726
 727             if (data[0] == prop_atoms.net_wm_orientation_vert)
 728                 orient = OB_ORIENTATION_VERT;
 729             else if (data[0] == prop_atoms.net_wm_orientation_horz)
 730                 orient = OB_ORIENTATION_HORZ;
 731             else
 732                 goto screen_update_layout_bail;
 733
 734             if (num < 4)
 735                 corner = OB_CORNER_TOPLEFT;
 736             else {
 737                 if (data[3] == prop_atoms.net_wm_topleft)
 738                     corner = OB_CORNER_TOPLEFT;
 739                 else if (data[3] == prop_atoms.net_wm_topright)
 740                     corner = OB_CORNER_TOPRIGHT;
 741                 else if (data[3] == prop_atoms.net_wm_bottomright)
 742                     corner = OB_CORNER_BOTTOMRIGHT;
 743                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 744                     corner = OB_CORNER_BOTTOMLEFT;
 745                 else
 746                     goto screen_update_layout_bail;
 747             }
 748
 749             /* fill in a zero rows/columns */
 750             if ((data[1] == 0 && data[2] == 0) || /* both 0's is bad data.. */
 751                 (data[1] != 0 && data[2] != 0)) { /* no 0's is bad data.. */
 752                 goto screen_update_layout_bail;
 753             } else {
 754                 if (data[1] == 0) {
 755                     data[1] = (screen_num_desktops +
 756                                screen_num_desktops % data[2]) / data[2];
 757                 } else if (data[2] == 0) {
 758                     data[2] = (screen_num_desktops +
 759                                screen_num_desktops % data[1]) / data[1];
 760                 }
 761                 cols = data[1];
 762                 rows = data[2];
 763             }
 764
 765             /* bounds checking */
 766             if (orient == OB_ORIENTATION_HORZ) {
 767                 rows = MIN(rows, screen_num_desktops);
 768                 cols = MIN(cols, ((screen_num_desktops +
 769                                      (screen_num_desktops % rows)) / rows));
 770             } else {
 771                 cols = MIN(cols, screen_num_desktops);
 772                 rows = MIN(rows, ((screen_num_desktops +
 773                                      (screen_num_desktops % cols)) / cols));
 774             }
 775
 776             valid = TRUE;
 777         }
 778     screen_update_layout_bail:
 779         g_free(data);
 780     }
 781
 782     if (!valid) {
 783         /* defaults */
 784         orient = OB_ORIENTATION_HORZ;
 785         corner = OB_CORNER_TOPLEFT;
 786         rows = 1;
 787         cols = screen_num_desktops;
 788     }
 789
 790     screen_desktop_layout.orientation = orient;
 791     screen_desktop_layout.start_corner = corner;
 792     screen_desktop_layout.rows = rows;
 793     screen_desktop_layout.columns = cols;
 794 }
 795
 796 void screen_update_desktop_names()
 797 {
 798     guint i;
 799
 800     /* empty the array */
 801     g_strfreev(screen_desktop_names);
 802     screen_desktop_names = NULL;
 803
 804     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
 805                    net_desktop_names, utf8, &screen_desktop_names))
 806         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 807     else
 808         i = 0;
 809     if (i <= screen_num_desktops) {
 810         screen_desktop_names = g_renew(char*, screen_desktop_names,
 811                                        screen_num_desktops + 1);
 812         screen_desktop_names[screen_num_desktops] = NULL;
 813         for (; i < screen_num_desktops; ++i)
 814             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 815     }
 816 }
 817
 818 void screen_show_desktop(gboolean show)
 819 {
 820     GList *it;
 821
 822     if (show == screen_showing_desktop) return; /* no change */
 823
 824     screen_showing_desktop = show;
 825
 826     if (show) {
 827         /* bottom to top */
 828         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 829             if (WINDOW_IS_CLIENT(it->data)) {
 830                 ObClient *client = it->data;
 831                 if (client->frame->visible && !client_should_show(client))
 832                     frame_hide(client->frame);
 833             }
 834         }
 835     } else {
 836         /* top to bottom */
 837         for (it = stacking_list; it != NULL; it = it->next) {
 838             if (WINDOW_IS_CLIENT(it->data)) {
 839                 ObClient *client = it->data;
 840                 if (!client->frame->visible && client_should_show(client))
 841                     frame_show(client->frame);
 842             }
 843         }
 844     }
 845
 846     if (show) {
 847         /* focus desktop */
 848         for (it = focus_order[screen_desktop]; it; it = it->next)
 849             if (((ObClient*)it->data)->type == OB_CLIENT_TYPE_DESKTOP &&
 850                 client_focus(it->data))
 851                 break;
 852     } else {
 853         focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 854     }
 855
 856     show = !!show; /* make it boolean */
 857     PROP_SET32(RootWindow(ob_display, ob_screen),
 858                net_showing_desktop, cardinal, show);
 859 }
 860
 861 void screen_install_colormap(ObClient *client, gboolean install)
 862 {
 863     XWindowAttributes wa;
 864
 865     if (client == NULL) {
 866         if (install)
 867             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 868         else
 869             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 870     } else {
 871         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 872             wa.colormap != None) {
 873             xerror_set_ignore(TRUE);
 874             if (install)
 875                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 876             else
 877                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 878             xerror_set_ignore(FALSE);
 879         }
 880     }
 881 }
 882
 883 void screen_update_areas()
 884 {
 885     guint i, x;
 886     guint32 *dims;
 887     GList *it;
 888
 889     g_free(monitor_area);
 890     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
 891
 892     if (area) {
 893         for (i = 0; area[i]; ++i)
 894             g_free(area[i]);
 895         g_free(area);
 896     }
 897
 898     area = g_new(Rect*, screen_num_desktops + 2);
 899     for (i = 0; i < screen_num_desktops + 1; ++i)
 900         area[i] = g_new(Rect, screen_num_monitors + 1);
 901     area[i] = NULL;
 902
 903     dims = g_new(guint32, 4 * screen_num_desktops);
 904
 905     for (i = 0; i < screen_num_desktops + 1; ++i) {
 906         Strut s;
 907         int l, r, t, b;
 908
 909         /* calc the xinerama areas */
 910         for (x = 0; x < screen_num_monitors; ++x) {
 911             area[i][x] = monitor_area[x];
 912             if (x == 0) {
 913                 l = monitor_area[x].x;
 914                 t = monitor_area[x].y;
 915                 r = monitor_area[x].x + monitor_area[x].width - 1;
 916                 b = monitor_area[x].y + monitor_area[x].height - 1;
 917             } else {
 918                 l = MIN(l, monitor_area[x].x);
 919                 t = MIN(t, monitor_area[x].y);
 920                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
 921                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
 922             }
 923         }
 924         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
 925
 926         /* apply struts */
 927         STRUT_SET(s, 0, 0, 0, 0);
 928         for (it = client_list; it; it = it->next)
 929             STRUT_ADD(s, ((ObClient*)it->data)->strut);
 930         STRUT_ADD(s, dock_strut);
 931
 932         if (s.left) {
 933             int o;
 934
 935             /* find the left-most xin heads, i do this in 2 loops :| */
 936             o = area[i][0].x;
 937             for (x = 1; x < screen_num_monitors; ++x)
 938                 o = MIN(o, area[i][x].x);
 939
 940             for (x = 0; x < screen_num_monitors; ++x) {
 941                 int edge = o + s.left - area[i][x].x;
 942                 if (edge > 0) {
 943                     area[i][x].x += edge;
 944                     area[i][x].width -= edge;
 945                 }
 946             }
 947
 948             area[i][screen_num_monitors].x += s.left;
 949             area[i][screen_num_monitors].width -= s.left;
 950         }
 951         if (s.top) {
 952             int o;
 953
 954             /* find the left-most xin heads, i do this in 2 loops :| */
 955             o = area[i][0].y;
 956             for (x = 1; x < screen_num_monitors; ++x)
 957                 o = MIN(o, area[i][x].y);
 958
 959             for (x = 0; x < screen_num_monitors; ++x) {
 960                 int edge = o + s.top - area[i][x].y;
 961                 if (edge > 0) {
 962                     area[i][x].y += edge;
 963                     area[i][x].height -= edge;
 964                 }
 965             }
 966
 967             area[i][screen_num_monitors].y += s.top;
 968             area[i][screen_num_monitors].height -= s.top;
 969         }
 970         if (s.right) {
 971             int o;
 972
 973             /* find the bottom-most xin heads, i do this in 2 loops :| */
 974             o = area[i][0].x + area[i][0].width - 1;
 975             for (x = 1; x < screen_num_monitors; ++x)
 976                 o = MAX(o, area[i][x].x + area[i][x].width - 1);
 977
 978             for (x = 0; x < screen_num_monitors; ++x) {
 979                 int edge = (area[i][x].x + area[i][x].width - 1) -
 980                     (o - s.right);
 981                 if (edge > 0)
 982                     area[i][x].width -= edge;
 983             }
 984
 985             area[i][screen_num_monitors].width -= s.right;
 986         }
 987         if (s.bottom) {
 988             int o;
 989
 990             /* find the bottom-most xin heads, i do this in 2 loops :| */
 991             o = area[i][0].y + area[i][0].height - 1;
 992             for (x = 1; x < screen_num_monitors; ++x)
 993                 o = MAX(o, area[i][x].y + area[i][x].height - 1);
 994
 995             for (x = 0; x < screen_num_monitors; ++x) {
 996                 int edge = (area[i][x].y + area[i][x].height - 1) -
 997                     (o - s.bottom);
 998                 if (edge > 0)
 999                     area[i][x].height -= edge;
1000             }
1001
1002             area[i][screen_num_monitors].height -= s.bottom;
1003         }
1004
1005         /* XXX when dealing with partial struts, if its in a single
1006            xinerama area, then only subtract it from that area's space
1007         for (x = 0; x < screen_num_monitors; ++x) {
1008             GList *it;
1009
1010
1011                do something smart with it for the 'all xinerama areas' one...
1012
1013             for (it = client_list; it; it = it->next) {
1014
1015                 XXX if gunna test this shit, then gotta worry about when
1016                 the client moves between xinerama heads..
1017
1018                 if (RECT_CONTAINS_RECT(((ObClient*)it->data)->frame->area,
1019                                        area[i][x])) {
1020
1021                 }
1022             }
1023         }
1024         */
1025
1026         /* XXX optimize when this is run? */
1027
1028         /* the area has changed, adjust all the maximized
1029            windows */
1030         for (it = client_list; it; it = it->next) {
1031             ObClient *c = it->data;
1032             if (i < screen_num_desktops) {
1033                 if (c->desktop == i)
1034                     client_reconfigure(c);
1035             } else if (c->desktop == DESKTOP_ALL)
1036                 client_reconfigure(c);
1037         }
1038         if (i < screen_num_desktops) {
1039             /* don't set these for the 'all desktops' area */
1040             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
1041             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
1042             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
1043             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
1044         }
1045     }
1046     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
1047                 dims, 4 * screen_num_desktops);
1048
1049     g_free(dims);
1050 }
1051
1052 Rect *screen_area(guint desktop)
1053 {
1054     return screen_area_monitor(desktop, screen_num_monitors);
1055 }
1056
1057 Rect *screen_area_monitor(guint desktop, guint head)
1058 {
1059     if (head > screen_num_monitors)
1060         return NULL;
1061     if (desktop >= screen_num_desktops) {
1062         if (desktop == DESKTOP_ALL)
1063             return &area[screen_num_desktops][head];
1064         return NULL;
1065     }
1066     return &area[desktop][head];
1067 }
1068
1069 Rect *screen_physical_area()
1070 {
1071     return screen_physical_area_monitor(screen_num_monitors);
1072 }
1073
1074 Rect *screen_physical_area_monitor(guint head)
1075 {
1076     if (head > screen_num_monitors)
1077         return NULL;
1078     return &monitor_area[head];
1079 }
1080
1081 static void set_root_cursor()
1082 {
1083 #ifdef USE_LIBSN
1084         if (sn_busy_cnt)
1085             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1086                           ob_cursor(OB_CURSOR_BUSY));
1087         else
1088 #endif
1089             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1090                           ob_cursor(OB_CURSOR_POINTER));
1091 }
1092
1093 #ifdef USE_LIBSN
1094 static gboolean sn_timeout(gpointer data)
1095 {
1096     sn_busy_cnt = 0;
1097
1098     set_root_cursor();
1099
1100     return FALSE; /* don't repeat */
1101 }
1102
1103 static void sn_event_func(SnMonitorEvent *ev, void *data)
1104 {
1105     SnStartupSequence *seq;
1106     const char *seq_id, *bin_name;
1107     int cnt = sn_busy_cnt;
1108
1109     if (!(seq = sn_monitor_event_get_startup_sequence(ev)))
1110         return;
1111
1112     seq_id = sn_startup_sequence_get_id(seq);
1113     bin_name = sn_startup_sequence_get_binary_name(seq);
1114
1115     if (!(seq_id && bin_name))
1116         return;
1117
1118     switch (sn_monitor_event_get_type(ev)) {
1119     case SN_MONITOR_EVENT_INITIATED:
1120         ++sn_busy_cnt;
1121         ob_main_loop_timeout_remove(ob_main_loop, sn_timeout);
1122         /* 30 second timeout for apps to start */
1123         ob_main_loop_timeout_add(ob_main_loop, 30 * G_USEC_PER_SEC,
1124                                  sn_timeout, NULL, NULL);
1125         break;
1126     case SN_MONITOR_EVENT_CHANGED:
1127         break;
1128     case SN_MONITOR_EVENT_COMPLETED:
1129         if (sn_busy_cnt) --sn_busy_cnt;
1130         ob_main_loop_timeout_remove(ob_main_loop, sn_timeout);
1131         break;
1132     case SN_MONITOR_EVENT_CANCELED:
1133         if (sn_busy_cnt) --sn_busy_cnt;
1134         ob_main_loop_timeout_remove(ob_main_loop, sn_timeout);
1135     };
1136
1137     if (sn_busy_cnt != cnt)
1138         set_root_cursor();
1139 }
1140 #endif
1141
1142 gboolean screen_pointer_pos(int *x, int *y)
1143 {
1144     Window w;
1145     int i;
1146     guint u;
1147
1148     return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
1149                            &w, &w, x, y, &i, &i, &u);
1150 }