openbox/screen.c

   1 /* -*- indent-tabs-mode: nil; tab-width: 4; c-basic-offset: 4; -*-
   2
   3    screen.c for the Openbox window manager
   4    Copyright (c) 2006        Mikael Magnusson
   5    Copyright (c) 2003-2007   Dana Jansens
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    See the COPYING file for a copy of the GNU General Public License.
  18 */
  19
  20 #include "debug.h"
  21 #include "openbox.h"
  22 #include "dock.h"
  23 #include "xerror.h"
  24 #include "prop.h"
  25 #include "grab.h"
  26 #include "startupnotify.h"
  27 #include "moveresize.h"
  28 #include "config.h"
  29 #include "screen.h"
  30 #include "client.h"
  31 #include "session.h"
  32 #include "frame.h"
  33 #include "event.h"
  34 #include "focus.h"
  35 #include "popup.h"
  36 #include "extensions.h"
  37 #include "render/render.h"
  38 #include "gettext.h"
  39
  40 #include <X11/Xlib.h>
  41 #ifdef HAVE_UNISTD_H
  42 #  include <sys/types.h>
  43 #  include <unistd.h>
  44 #endif
  45 #include <assert.h>
  46
  47 /*! The event mask to grab on the root window */
  48 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
  49                         EnterWindowMask | LeaveWindowMask | \
  50                         SubstructureRedirectMask | FocusChangeMask | \
  51                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  52
  53 guint    screen_num_desktops;
  54 guint    screen_num_monitors;
  55 guint    screen_desktop;
  56 guint    screen_last_desktop;
  57 Size     screen_physical_size;
  58 gboolean screen_showing_desktop;
  59 ObDesktopLayout screen_desktop_layout;
  60 gchar  **screen_desktop_names;
  61 Window   screen_support_win;
  62 Time     screen_desktop_user_time = CurrentTime;
  63
  64 static Rect  **area; /* array of desktop holding array of xinerama areas */
  65 static Rect  *monitor_area;
  66
  67 static ObPagerPopup *desktop_cycle_popup;
  68
  69 static gboolean replace_wm()
  70 {
  71     gchar *wm_sn;
  72     Atom wm_sn_atom;
  73     Window current_wm_sn_owner;
  74     Time timestamp;
  75
  76     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
  77     wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
  78     g_free(wm_sn);
  79
  80     current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
  81     if (current_wm_sn_owner == screen_support_win)
  82         current_wm_sn_owner = None;
  83     if (current_wm_sn_owner) {
  84         if (!ob_replace_wm) {
  85             g_message(_("A window manager is already running on screen %d"),
  86                       ob_screen);
  87             return FALSE;
  88         }
  89         xerror_set_ignore(TRUE);
  90         xerror_occured = FALSE;
  91
  92         /* We want to find out when the current selection owner dies */
  93         XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
  94         XSync(ob_display, FALSE);
  95
  96         xerror_set_ignore(FALSE);
  97         if (xerror_occured)
  98             current_wm_sn_owner = None;
  99     }
 100
 101     {
 102         /* Generate a timestamp */
 103         XEvent event;
 104
 105         XSelectInput(ob_display, screen_support_win, PropertyChangeMask);
 106
 107         XChangeProperty(ob_display, screen_support_win,
 108                         prop_atoms.wm_class, prop_atoms.string,
 109                         8, PropModeAppend, NULL, 0);
 110         XWindowEvent(ob_display, screen_support_win,
 111                      PropertyChangeMask, &event);
 112
 113         XSelectInput(ob_display, screen_support_win, NoEventMask);
 114
 115         timestamp = event.xproperty.time;
 116     }
 117
 118     XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
 119                        timestamp);
 120
 121     if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
 122         g_message(_("Could not acquire window manager selection on screen %d"),
 123                   ob_screen);
 124         return FALSE;
 125     }
 126
 127     /* Wait for old window manager to go away */
 128     if (current_wm_sn_owner) {
 129       XEvent event;
 130       gulong wait = 0;
 131       const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
 132
 133       while (wait < timeout) {
 134           if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
 135                                 StructureNotifyMask, &event) &&
 136               event.type == DestroyNotify)
 137               break;
 138           g_usleep(G_USEC_PER_SEC / 10);
 139           wait += G_USEC_PER_SEC / 10;
 140       }
 141
 142       if (wait >= timeout) {
 143           g_message(_("The WM on screen %d is not exiting"), ob_screen);
 144           return FALSE;
 145       }
 146     }
 147
 148     /* Send client message indicating that we are now the WM */
 149     prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
 150                  timestamp, wm_sn_atom, screen_support_win, 0,
 151                  SubstructureNotifyMask);
 152
 153     return TRUE;
 154 }
 155
 156 gboolean screen_annex()
 157 {
 158     XSetWindowAttributes attrib;
 159     pid_t pid;
 160     gint i, num_support;
 161     Atom *prop_atoms_start, *wm_supported_pos;
 162     gulong *supported;
 163
 164     /* create the netwm support window */
 165     attrib.override_redirect = TRUE;
 166     screen_support_win = XCreateWindow(ob_display,
 167                                        RootWindow(ob_display, ob_screen),
 168                                        -100, -100, 1, 1, 0,
 169                                        CopyFromParent, InputOutput,
 170                                        CopyFromParent,
 171                                        CWOverrideRedirect, &attrib);
 172     XMapWindow(ob_display, screen_support_win);
 173     XLowerWindow(ob_display, screen_support_win);
 174
 175     if (!replace_wm()) {
 176         XDestroyWindow(ob_display, screen_support_win);
 177         return FALSE;
 178     }
 179
 180     xerror_set_ignore(TRUE);
 181     xerror_occured = FALSE;
 182     XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
 183                  ROOT_EVENTMASK);
 184     xerror_set_ignore(FALSE);
 185     if (xerror_occured) {
 186         g_message(_("A window manager is already running on screen %d"),
 187                   ob_screen);
 188
 189         XDestroyWindow(ob_display, screen_support_win);
 190         return FALSE;
 191     }
 192
 193     screen_set_root_cursor();
 194
 195     /* set the OPENBOX_PID hint */
 196     pid = getpid();
 197     PROP_SET32(RootWindow(ob_display, ob_screen),
 198                openbox_pid, cardinal, pid);
 199
 200     /* set supporting window */
 201     PROP_SET32(RootWindow(ob_display, ob_screen),
 202                net_supporting_wm_check, window, screen_support_win);
 203
 204     /* set properties on the supporting window */
 205     PROP_SETS(screen_support_win, net_wm_name, "Openbox");
 206     PROP_SET32(screen_support_win, net_supporting_wm_check,
 207                window, screen_support_win);
 208
 209     /* set the _NET_SUPPORTED_ATOMS hint */
 210
 211     /* this is all the atoms after net_supported in the prop_atoms struct */
 212     prop_atoms_start = (Atom*)&prop_atoms;
 213     wm_supported_pos = (Atom*)&(prop_atoms.net_supported);
 214     num_support = sizeof(prop_atoms) / sizeof(Atom) -
 215         (wm_supported_pos - prop_atoms_start) - 1;
 216     i = 0;
 217     supported = g_new(gulong, num_support);
 218     supported[i++] = prop_atoms.net_supporting_wm_check;
 219     supported[i++] = prop_atoms.net_wm_full_placement;
 220     supported[i++] = prop_atoms.net_current_desktop;
 221     supported[i++] = prop_atoms.net_number_of_desktops;
 222     supported[i++] = prop_atoms.net_desktop_geometry;
 223     supported[i++] = prop_atoms.net_desktop_viewport;
 224     supported[i++] = prop_atoms.net_active_window;
 225     supported[i++] = prop_atoms.net_workarea;
 226     supported[i++] = prop_atoms.net_client_list;
 227     supported[i++] = prop_atoms.net_client_list_stacking;
 228     supported[i++] = prop_atoms.net_desktop_names;
 229     supported[i++] = prop_atoms.net_close_window;
 230     supported[i++] = prop_atoms.net_desktop_layout;
 231     supported[i++] = prop_atoms.net_showing_desktop;
 232     supported[i++] = prop_atoms.net_wm_name;
 233     supported[i++] = prop_atoms.net_wm_visible_name;
 234     supported[i++] = prop_atoms.net_wm_icon_name;
 235     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 236     supported[i++] = prop_atoms.net_wm_desktop;
 237     supported[i++] = prop_atoms.net_wm_strut;
 238     supported[i++] = prop_atoms.net_wm_strut_partial;
 239     supported[i++] = prop_atoms.net_wm_icon;
 240     supported[i++] = prop_atoms.net_wm_icon_geometry;
 241     supported[i++] = prop_atoms.net_wm_window_type;
 242     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 243     supported[i++] = prop_atoms.net_wm_window_type_dock;
 244     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 245     supported[i++] = prop_atoms.net_wm_window_type_menu;
 246     supported[i++] = prop_atoms.net_wm_window_type_utility;
 247     supported[i++] = prop_atoms.net_wm_window_type_splash;
 248     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 249     supported[i++] = prop_atoms.net_wm_window_type_normal;
 250     supported[i++] = prop_atoms.net_wm_allowed_actions;
 251     supported[i++] = prop_atoms.net_wm_action_move;
 252     supported[i++] = prop_atoms.net_wm_action_resize;
 253     supported[i++] = prop_atoms.net_wm_action_minimize;
 254     supported[i++] = prop_atoms.net_wm_action_shade;
 255     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 256     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 257     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 258     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 259     supported[i++] = prop_atoms.net_wm_action_close;
 260     supported[i++] = prop_atoms.net_wm_action_above;
 261     supported[i++] = prop_atoms.net_wm_action_below;
 262     supported[i++] = prop_atoms.net_wm_state;
 263     supported[i++] = prop_atoms.net_wm_state_modal;
 264     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 265     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 266     supported[i++] = prop_atoms.net_wm_state_shaded;
 267     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 268     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 269     supported[i++] = prop_atoms.net_wm_state_hidden;
 270     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 271     supported[i++] = prop_atoms.net_wm_state_above;
 272     supported[i++] = prop_atoms.net_wm_state_below;
 273     supported[i++] = prop_atoms.net_wm_state_demands_attention;
 274     supported[i++] = prop_atoms.net_moveresize_window;
 275     supported[i++] = prop_atoms.net_wm_moveresize;
 276     supported[i++] = prop_atoms.net_wm_user_time;
 277     supported[i++] = prop_atoms.net_wm_user_time_window;
 278     supported[i++] = prop_atoms.net_frame_extents;
 279     supported[i++] = prop_atoms.net_request_frame_extents;
 280     supported[i++] = prop_atoms.net_restack_window;
 281     supported[i++] = prop_atoms.net_startup_id;
 282 #ifdef SYNC
 283     supported[i++] = prop_atoms.net_wm_sync_request;
 284     supported[i++] = prop_atoms.net_wm_sync_request_counter;
 285 #endif
 286
 287     supported[i++] = prop_atoms.kde_wm_change_state;
 288     supported[i++] = prop_atoms.kde_net_wm_frame_strut;
 289     supported[i++] = prop_atoms.kde_net_wm_window_type_override;
 290
 291     supported[i++] = prop_atoms.ob_wm_action_undecorate;
 292     supported[i++] = prop_atoms.ob_wm_state_undecorated;
 293     supported[i++] = prop_atoms.openbox_pid;
 294     supported[i++] = prop_atoms.ob_config;
 295     supported[i++] = prop_atoms.ob_control;
 296     g_assert(i == num_support);
 297
 298     PROP_SETA32(RootWindow(ob_display, ob_screen),
 299                 net_supported, atom, supported, num_support);
 300     g_free(supported);
 301
 302     return TRUE;
 303 }
 304
 305 void screen_startup(gboolean reconfig)
 306 {
 307     guint i, numnames;
 308     gchar **names;
 309     GSList *it, *namelist;
 310     guint32 d;
 311
 312     desktop_cycle_popup = pager_popup_new(FALSE);
 313     pager_popup_height(desktop_cycle_popup, POPUP_HEIGHT);
 314
 315     if (reconfig) {
 316         /* update the pager popup's width */
 317         pager_popup_text_width_to_strings(desktop_cycle_popup,
 318                                           screen_desktop_names,
 319                                           screen_num_desktops);
 320         return;
 321     }
 322
 323     /* get the initial size */
 324     screen_resize();
 325
 326     /* get the desktop names */
 327     namelist = session_desktop_names ?
 328         session_desktop_names : config_desktops_names;
 329     numnames = g_slist_length(namelist);
 330     names = g_new(gchar*, numnames + 1);
 331     names[numnames] = NULL;
 332     for (i = 0, it = namelist; it; ++i, it = g_slist_next(it))
 333         names[i] = g_strdup(it->data);
 334
 335     /* set the root window property */
 336     PROP_SETSS(RootWindow(ob_display, ob_screen), net_desktop_names,names);
 337
 338     g_strfreev(names);
 339
 340     /* set the number of desktops */
 341     screen_num_desktops = 0;
 342     if (session_num_desktops)
 343         screen_set_num_desktops(session_num_desktops);
 344     else
 345         screen_set_num_desktops(config_desktops_num);
 346
 347     /* start on the current desktop when a wm was already running */
 348     if (PROP_GET32(RootWindow(ob_display, ob_screen),
 349                    net_current_desktop, cardinal, &d) &&
 350         d < screen_num_desktops)
 351     {
 352         screen_set_desktop(d, FALSE);
 353     } else if (session_desktop >= 0)
 354         screen_set_desktop(MIN((guint)session_desktop,
 355                                screen_num_desktops), FALSE);
 356     else
 357         screen_set_desktop(MIN(config_screen_firstdesk,
 358                                screen_num_desktops) - 1, FALSE);
 359
 360     /* don't start in showing-desktop mode */
 361     screen_showing_desktop = FALSE;
 362     PROP_SET32(RootWindow(ob_display, ob_screen),
 363                net_showing_desktop, cardinal, screen_showing_desktop);
 364
 365     if (session_desktop_layout_present)
 366         screen_desktop_layout = session_desktop_layout;
 367     else
 368         screen_update_layout();
 369 }
 370
 371 void screen_shutdown(gboolean reconfig)
 372 {
 373     Rect **r;
 374
 375     pager_popup_free(desktop_cycle_popup);
 376
 377     if (reconfig)
 378         return;
 379
 380     XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
 381                  NoEventMask);
 382
 383     /* we're not running here no more! */
 384     PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
 385     /* not without us */
 386     PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
 387     /* don't keep this mode */
 388     PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
 389
 390     XDestroyWindow(ob_display, screen_support_win);
 391
 392     g_strfreev(screen_desktop_names);
 393     screen_desktop_names = NULL;
 394
 395     for (r = area; *r; ++r)
 396         g_free(*r);
 397     g_free(area);
 398     area = NULL;
 399 }
 400
 401 void screen_resize()
 402 {
 403     static gint oldw = 0, oldh = 0;
 404     gint w, h;
 405     GList *it;
 406     gulong geometry[2];
 407
 408     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 409     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 410
 411     if (w == oldw && h == oldh) return;
 412
 413     oldw = w; oldh = h;
 414
 415     /* Set the _NET_DESKTOP_GEOMETRY hint */
 416     screen_physical_size.width = geometry[0] = w;
 417     screen_physical_size.height = geometry[1] = h;
 418     PROP_SETA32(RootWindow(ob_display, ob_screen),
 419                 net_desktop_geometry, cardinal, geometry, 2);
 420
 421     if (ob_state() == OB_STATE_STARTING)
 422         return;
 423
 424     screen_update_areas();
 425     dock_configure();
 426
 427     for (it = client_list; it; it = g_list_next(it))
 428         client_move_onscreen(it->data, FALSE);
 429 }
 430
 431 void screen_set_num_desktops(guint num)
 432 {
 433     guint old;
 434     gulong *viewport;
 435     GList *it;
 436
 437     g_assert(num > 0);
 438
 439     if (screen_num_desktops == num) return;
 440
 441     old = screen_num_desktops;
 442     screen_num_desktops = num;
 443     PROP_SET32(RootWindow(ob_display, ob_screen),
 444                net_number_of_desktops, cardinal, num);
 445
 446     /* set the viewport hint */
 447     viewport = g_new0(gulong, num * 2);
 448     PROP_SETA32(RootWindow(ob_display, ob_screen),
 449                 net_desktop_viewport, cardinal, viewport, num * 2);
 450     g_free(viewport);
 451
 452     /* the number of rows/columns will differ */
 453     screen_update_layout();
 454
 455     /* move windows on desktops that will no longer exist! */
 456     for (it = client_list; it; it = g_list_next(it)) {
 457         ObClient *c = it->data;
 458         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
 459             client_set_desktop(c, num - 1, FALSE);
 460     }
 461
 462     /* change our struts/area to match (after moving windows) */
 463     screen_update_areas();
 464
 465     /* may be some unnamed desktops that we need to fill in with names
 466      (after updating the areas so the popup can resize) */
 467     screen_update_desktop_names();
 468
 469     /* change our desktop if we're on one that no longer exists! */
 470     if (screen_desktop >= screen_num_desktops)
 471         screen_set_desktop(num - 1, TRUE);
 472 }
 473
 474 void screen_set_desktop(guint num, gboolean dofocus)
 475 {
 476     ObClient *c;
 477     GList *it;
 478     guint old;
 479
 480     g_assert(num < screen_num_desktops);
 481
 482     old = screen_desktop;
 483     screen_desktop = num;
 484     PROP_SET32(RootWindow(ob_display, ob_screen),
 485                net_current_desktop, cardinal, num);
 486
 487     if (old == num) return;
 488
 489     screen_last_desktop = old;
 490
 491     ob_debug("Moving to desktop %d\n", num+1);
 492
 493     if (moveresize_client)
 494         client_set_desktop(moveresize_client, num, TRUE);
 495
 496     /* show windows before hiding the rest to lessen the enter/leave events */
 497
 498     /* show windows from top to bottom */
 499     for (it = stacking_list; it; it = g_list_next(it)) {
 500         if (WINDOW_IS_CLIENT(it->data)) {
 501             ObClient *c = it->data;
 502             client_show(c);
 503         }
 504     }
 505
 506     /* have to try focus here because when you leave an empty desktop
 507        there is no focus out to watch for
 508
 509        do this before hiding the windows so if helper windows are coming
 510        with us, they don't get hidden
 511     */
 512     if (dofocus && (c = focus_fallback(TRUE))) {
 513         /* only do the flicker reducing stuff ahead of time if we are going
 514            to call xsetinputfocus on the window ourselves. otherwise there is
 515            no guarantee the window will actually take focus.. */
 516         if (c->can_focus) {
 517             /* reduce flicker by hiliting now rather than waiting for the
 518                server FocusIn event */
 519             frame_adjust_focus(c->frame, TRUE);
 520             /* do this here so that if you switch desktops to a window with
 521                helper windows then the helper windows won't flash */
 522             client_bring_helper_windows(c);
 523         }
 524     }
 525
 526     /* hide windows from bottom to top */
 527     for (it = g_list_last(stacking_list); it; it = g_list_previous(it)) {
 528         if (WINDOW_IS_CLIENT(it->data)) {
 529             ObClient *c = it->data;
 530             client_hide(c);
 531         }
 532     }
 533
 534     event_ignore_all_queued_enters();
 535
 536     if (event_curtime != CurrentTime)
 537         screen_desktop_user_time = event_curtime;
 538 }
 539
 540 static void get_row_col(guint d, guint *r, guint *c)
 541 {
 542     switch (screen_desktop_layout.orientation) {
 543     case OB_ORIENTATION_HORZ:
 544         switch (screen_desktop_layout.start_corner) {
 545         case OB_CORNER_TOPLEFT:
 546             *r = d / screen_desktop_layout.columns;
 547             *c = d % screen_desktop_layout.columns;
 548             break;
 549         case OB_CORNER_BOTTOMLEFT:
 550             *r = screen_desktop_layout.rows - 1 -
 551                 d / screen_desktop_layout.columns;
 552             *c = d % screen_desktop_layout.columns;
 553             break;
 554         case OB_CORNER_TOPRIGHT:
 555             *r = d / screen_desktop_layout.columns;
 556             *c = screen_desktop_layout.columns - 1 -
 557                 d % screen_desktop_layout.columns;
 558             break;
 559         case OB_CORNER_BOTTOMRIGHT:
 560             *r = screen_desktop_layout.rows - 1 -
 561                 d / screen_desktop_layout.columns;
 562             *c = screen_desktop_layout.columns - 1 -
 563                 d % screen_desktop_layout.columns;
 564             break;
 565         }
 566         break;
 567     case OB_ORIENTATION_VERT:
 568         switch (screen_desktop_layout.start_corner) {
 569         case OB_CORNER_TOPLEFT:
 570             *r = d % screen_desktop_layout.rows;
 571             *c = d / screen_desktop_layout.rows;
 572             break;
 573         case OB_CORNER_BOTTOMLEFT:
 574             *r = screen_desktop_layout.rows - 1 -
 575                 d % screen_desktop_layout.rows;
 576             *c = d / screen_desktop_layout.rows;
 577             break;
 578         case OB_CORNER_TOPRIGHT:
 579             *r = d % screen_desktop_layout.rows;
 580             *c = screen_desktop_layout.columns - 1 -
 581                 d / screen_desktop_layout.rows;
 582             break;
 583         case OB_CORNER_BOTTOMRIGHT:
 584             *r = screen_desktop_layout.rows - 1 -
 585                 d % screen_desktop_layout.rows;
 586             *c = screen_desktop_layout.columns - 1 -
 587                 d / screen_desktop_layout.rows;
 588             break;
 589         }
 590         break;
 591     }
 592 }
 593
 594 static guint translate_row_col(guint r, guint c)
 595 {
 596     switch (screen_desktop_layout.orientation) {
 597     case OB_ORIENTATION_HORZ:
 598         switch (screen_desktop_layout.start_corner) {
 599         case OB_CORNER_TOPLEFT:
 600             return r % screen_desktop_layout.rows *
 601                 screen_desktop_layout.columns +
 602                 c % screen_desktop_layout.columns;
 603         case OB_CORNER_BOTTOMLEFT:
 604             return (screen_desktop_layout.rows - 1 -
 605                     r % screen_desktop_layout.rows) *
 606                 screen_desktop_layout.columns +
 607                 c % screen_desktop_layout.columns;
 608         case OB_CORNER_TOPRIGHT:
 609             return r % screen_desktop_layout.rows *
 610                 screen_desktop_layout.columns +
 611                 (screen_desktop_layout.columns - 1 -
 612                  c % screen_desktop_layout.columns);
 613         case OB_CORNER_BOTTOMRIGHT:
 614             return (screen_desktop_layout.rows - 1 -
 615                     r % screen_desktop_layout.rows) *
 616                 screen_desktop_layout.columns +
 617                 (screen_desktop_layout.columns - 1 -
 618                  c % screen_desktop_layout.columns);
 619         }
 620     case OB_ORIENTATION_VERT:
 621         switch (screen_desktop_layout.start_corner) {
 622         case OB_CORNER_TOPLEFT:
 623             return c % screen_desktop_layout.columns *
 624                 screen_desktop_layout.rows +
 625                 r % screen_desktop_layout.rows;
 626         case OB_CORNER_BOTTOMLEFT:
 627             return c % screen_desktop_layout.columns *
 628                 screen_desktop_layout.rows +
 629                 (screen_desktop_layout.rows - 1 -
 630                  r % screen_desktop_layout.rows);
 631         case OB_CORNER_TOPRIGHT:
 632             return (screen_desktop_layout.columns - 1 -
 633                     c % screen_desktop_layout.columns) *
 634                 screen_desktop_layout.rows +
 635                 r % screen_desktop_layout.rows;
 636         case OB_CORNER_BOTTOMRIGHT:
 637             return (screen_desktop_layout.columns - 1 -
 638                     c % screen_desktop_layout.columns) *
 639                 screen_desktop_layout.rows +
 640                 (screen_desktop_layout.rows - 1 -
 641                  r % screen_desktop_layout.rows);
 642         }
 643     }
 644     g_assert_not_reached();
 645     return 0;
 646 }
 647
 648 void screen_desktop_popup(guint d, gboolean show)
 649 {
 650     Rect *a;
 651
 652     if (!show) {
 653         pager_popup_hide(desktop_cycle_popup);
 654     } else {
 655         a = screen_physical_area_monitor(0);
 656         pager_popup_position(desktop_cycle_popup, CenterGravity,
 657                              a->x + a->width / 2, a->y + a->height / 2);
 658         pager_popup_icon_size_multiplier(desktop_cycle_popup,
 659                                          (screen_desktop_layout.columns /
 660                                           screen_desktop_layout.rows) / 2,
 661                                          (screen_desktop_layout.rows/
 662                                           screen_desktop_layout.columns) / 2);
 663         pager_popup_max_width(desktop_cycle_popup,
 664                               MAX(a->width/3, POPUP_WIDTH));
 665         pager_popup_show(desktop_cycle_popup, screen_desktop_names[d], d);
 666     }
 667 }
 668
 669 guint screen_cycle_desktop(ObDirection dir, gboolean wrap, gboolean linear,
 670                            gboolean dialog, gboolean done, gboolean cancel)
 671 {
 672     guint r, c;
 673     static guint d = (guint)-1;
 674     guint ret, oldd;
 675
 676     if (d == (guint)-1)
 677         d = screen_desktop;
 678
 679     if ((cancel || done) && dialog)
 680         goto show_cycle_dialog;
 681
 682     oldd = d;
 683     get_row_col(d, &r, &c);
 684
 685     if (linear) {
 686         switch (dir) {
 687         case OB_DIRECTION_EAST:
 688             if (d < screen_num_desktops - 1)
 689                 ++d;
 690             else if (wrap)
 691                 d = 0;
 692             break;
 693         case OB_DIRECTION_WEST:
 694             if (d > 0)
 695                 --d;
 696             else if (wrap)
 697                 d = screen_num_desktops - 1;
 698             break;
 699         default:
 700             assert(0);
 701             return screen_desktop;
 702         }
 703     } else {
 704         switch (dir) {
 705         case OB_DIRECTION_EAST:
 706             ++c;
 707             if (c >= screen_desktop_layout.columns) {
 708                 if (wrap)
 709                     c = 0;
 710                 else
 711                     goto show_cycle_dialog;
 712             }
 713             d = translate_row_col(r, c);
 714             if (d >= screen_num_desktops) {
 715                 if (wrap) {
 716                     ++c;
 717                 } else {
 718                     d = oldd;
 719                     goto show_cycle_dialog;
 720                 }
 721             }
 722             break;
 723         case OB_DIRECTION_WEST:
 724             --c;
 725             if (c >= screen_desktop_layout.columns) {
 726                 if (wrap)
 727                     c = screen_desktop_layout.columns - 1;
 728                 else
 729                     goto show_cycle_dialog;
 730             }
 731             d = translate_row_col(r, c);
 732             if (d >= screen_num_desktops) {
 733                 if (wrap) {
 734                     --c;
 735                 } else {
 736                     d = oldd;
 737                     goto show_cycle_dialog;
 738                 }
 739             }
 740             break;
 741         case OB_DIRECTION_SOUTH:
 742             ++r;
 743             if (r >= screen_desktop_layout.rows) {
 744                 if (wrap)
 745                     r = 0;
 746                 else
 747                     goto show_cycle_dialog;
 748             }
 749             d = translate_row_col(r, c);
 750             if (d >= screen_num_desktops) {
 751                 if (wrap) {
 752                     ++r;
 753                 } else {
 754                     d = oldd;
 755                     goto show_cycle_dialog;
 756                 }
 757             }
 758             break;
 759         case OB_DIRECTION_NORTH:
 760             --r;
 761             if (r >= screen_desktop_layout.rows) {
 762                 if (wrap)
 763                     r = screen_desktop_layout.rows - 1;
 764                 else
 765                     goto show_cycle_dialog;
 766             }
 767             d = translate_row_col(r, c);
 768             if (d >= screen_num_desktops) {
 769                 if (wrap) {
 770                     --r;
 771                 } else {
 772                     d = oldd;
 773                     goto show_cycle_dialog;
 774                 }
 775             }
 776             break;
 777         default:
 778             assert(0);
 779             return d = screen_desktop;
 780         }
 781
 782         d = translate_row_col(r, c);
 783     }
 784
 785 show_cycle_dialog:
 786     if (dialog && !cancel && !done) {
 787         screen_desktop_popup(d, TRUE);
 788     } else
 789         screen_desktop_popup(0, FALSE);
 790     ret = d;
 791
 792     if (!dialog || cancel || done)
 793         d = (guint)-1;
 794
 795     return ret;
 796 }
 797
 798 void screen_update_layout()
 799 {
 800     ObOrientation orient;
 801     ObCorner corner;
 802     guint rows;
 803     guint cols;
 804     guint32 *data;
 805     guint num;
 806     gboolean valid = FALSE;
 807
 808     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
 809                     net_desktop_layout, cardinal, &data, &num)) {
 810         if (num == 3 || num == 4) {
 811
 812             if (data[0] == prop_atoms.net_wm_orientation_vert)
 813                 orient = OB_ORIENTATION_VERT;
 814             else if (data[0] == prop_atoms.net_wm_orientation_horz)
 815                 orient = OB_ORIENTATION_HORZ;
 816             else
 817                 goto screen_update_layout_bail;
 818
 819             if (num < 4)
 820                 corner = OB_CORNER_TOPLEFT;
 821             else {
 822                 if (data[3] == prop_atoms.net_wm_topleft)
 823                     corner = OB_CORNER_TOPLEFT;
 824                 else if (data[3] == prop_atoms.net_wm_topright)
 825                     corner = OB_CORNER_TOPRIGHT;
 826                 else if (data[3] == prop_atoms.net_wm_bottomright)
 827                     corner = OB_CORNER_BOTTOMRIGHT;
 828                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 829                     corner = OB_CORNER_BOTTOMLEFT;
 830                 else
 831                     goto screen_update_layout_bail;
 832             }
 833
 834             cols = data[1];
 835             rows = data[2];
 836
 837             /* fill in a zero rows/columns */
 838             if ((cols == 0 && rows == 0)) { /* both 0's is bad data.. */
 839                 goto screen_update_layout_bail;
 840             } else {
 841                 if (cols == 0) {
 842                     cols = screen_num_desktops / rows;
 843                     if (rows * cols < screen_num_desktops)
 844                         cols++;
 845                     if (rows * cols >= screen_num_desktops + cols)
 846                         rows--;
 847                 } else if (rows == 0) {
 848                     rows = screen_num_desktops / cols;
 849                     if (cols * rows < screen_num_desktops)
 850                         rows++;
 851                     if (cols * rows >= screen_num_desktops + rows)
 852                         cols--;
 853                 }
 854             }
 855
 856             /* bounds checking */
 857             if (orient == OB_ORIENTATION_HORZ) {
 858                 cols = MIN(screen_num_desktops, cols);
 859                 rows = MIN(rows, (screen_num_desktops + cols - 1) / cols);
 860                 cols = screen_num_desktops / rows +
 861                     !!(screen_num_desktops % rows);
 862             } else {
 863                 rows = MIN(screen_num_desktops, rows);
 864                 cols = MIN(cols, (screen_num_desktops + rows - 1) / rows);
 865                 rows = screen_num_desktops / cols +
 866                     !!(screen_num_desktops % cols);
 867             }
 868
 869             valid = TRUE;
 870         }
 871     screen_update_layout_bail:
 872         g_free(data);
 873     }
 874
 875     if (!valid) {
 876         /* defaults */
 877         orient = OB_ORIENTATION_HORZ;
 878         corner = OB_CORNER_TOPLEFT;
 879         rows = 1;
 880         cols = screen_num_desktops;
 881     }
 882
 883     screen_desktop_layout.orientation = orient;
 884     screen_desktop_layout.start_corner = corner;
 885     screen_desktop_layout.rows = rows;
 886     screen_desktop_layout.columns = cols;
 887 }
 888
 889 void screen_update_desktop_names()
 890 {
 891     guint i;
 892
 893     /* empty the array */
 894     g_strfreev(screen_desktop_names);
 895     screen_desktop_names = NULL;
 896
 897     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
 898                    net_desktop_names, utf8, &screen_desktop_names))
 899         for (i = 0; screen_desktop_names[i] && i < screen_num_desktops; ++i);
 900     else
 901         i = 0;
 902     if (i < screen_num_desktops) {
 903         screen_desktop_names = g_renew(gchar*, screen_desktop_names,
 904                                        screen_num_desktops + 1);
 905         screen_desktop_names[screen_num_desktops] = NULL;
 906         for (; i < screen_num_desktops; ++i)
 907             screen_desktop_names[i] = g_strdup_printf("desktop %i", i + 1);
 908     }
 909
 910     /* resize the pager for these names */
 911     pager_popup_text_width_to_strings(desktop_cycle_popup,
 912                                       screen_desktop_names,
 913                                       screen_num_desktops);
 914 }
 915
 916 void screen_show_desktop(gboolean show, ObClient *show_only)
 917 {
 918     GList *it;
 919
 920     if (show == screen_showing_desktop) return; /* no change */
 921
 922     screen_showing_desktop = show;
 923
 924     if (show) {
 925         /* hide windows bottom to top */
 926         for (it = g_list_last(stacking_list); it; it = g_list_previous(it)) {
 927             if (WINDOW_IS_CLIENT(it->data)) {
 928                 ObClient *client = it->data;
 929                 client_showhide(client);
 930             }
 931         }
 932     }
 933     else {
 934         /* restore windows top to bottom */
 935         for (it = stacking_list; it; it = g_list_next(it)) {
 936             if (WINDOW_IS_CLIENT(it->data)) {
 937                 ObClient *client = it->data;
 938                 if (client_should_show(client)) {
 939                     if (!show_only || client == show_only)
 940                         client_show(client);
 941                     else
 942                         client_iconify(client, TRUE, FALSE, TRUE);
 943                 }
 944             }
 945         }
 946     }
 947
 948     if (show) {
 949         /* focus the desktop */
 950         for (it = focus_order; it; it = g_list_next(it)) {
 951             ObClient *c = it->data;
 952             if (c->type == OB_CLIENT_TYPE_DESKTOP &&
 953                 (c->desktop == screen_desktop || c->desktop == DESKTOP_ALL) &&
 954                 client_focus(it->data))
 955                 break;
 956         }
 957     }
 958     else if (!show_only) {
 959         ObClient *c;
 960
 961         if ((c = focus_fallback(TRUE))) {
 962             /* only do the flicker reducing stuff ahead of time if we are going
 963                to call xsetinputfocus on the window ourselves. otherwise there
 964                is no guarantee the window will actually take focus.. */
 965             if (c->can_focus) {
 966                 /* reduce flicker by hiliting now rather than waiting for the
 967                    server FocusIn event */
 968                 frame_adjust_focus(c->frame, TRUE);
 969             }
 970         }
 971     }
 972
 973     show = !!show; /* make it boolean */
 974     PROP_SET32(RootWindow(ob_display, ob_screen),
 975                net_showing_desktop, cardinal, show);
 976 }
 977
 978 void screen_install_colormap(ObClient *client, gboolean install)
 979 {
 980     if (client == NULL) {
 981         if (install)
 982             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 983         else
 984             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 985     } else {
 986         xerror_set_ignore(TRUE);
 987         if (install) {
 988             if (client->colormap != None)
 989                 XInstallColormap(RrDisplay(ob_rr_inst), client->colormap);
 990         } else
 991             XUninstallColormap(RrDisplay(ob_rr_inst), client->colormap);
 992         xerror_set_ignore(FALSE);
 993     }
 994 }
 995
 996 static inline void
 997 screen_area_add_strut_left(const StrutPartial *s, const Rect *monitor_area,
 998                            gint edge, Strut *ret)
 999 {
1000     if (s->left &&
1001         ((s->left_end <= s->left_start) ||
1002          (RECT_TOP(*monitor_area) < s->left_end &&
1003           RECT_BOTTOM(*monitor_area) > s->left_start)))
1004         ret->left = MAX(ret->left, edge);
1005 }
1006
1007 static inline void
1008 screen_area_add_strut_top(const StrutPartial *s, const Rect *monitor_area,
1009                           gint edge, Strut *ret)
1010 {
1011     if (s->top &&
1012         ((s->top_end <= s->top_start) ||
1013          (RECT_LEFT(*monitor_area) < s->top_end &&
1014           RECT_RIGHT(*monitor_area) > s->top_start)))
1015         ret->top = MAX(ret->top, edge);
1016 }
1017
1018 static inline void
1019 screen_area_add_strut_right(const StrutPartial *s, const Rect *monitor_area,
1020                             gint edge, Strut *ret)
1021 {
1022     if (s->right &&
1023         ((s->right_end <= s->right_start) ||
1024          (RECT_TOP(*monitor_area) < s->right_end &&
1025           RECT_BOTTOM(*monitor_area) > s->right_start)))
1026         ret->right = MAX(ret->right, edge);
1027 }
1028
1029 static inline void
1030 screen_area_add_strut_bottom(const StrutPartial *s, const Rect *monitor_area,
1031                              gint edge, Strut *ret)
1032 {
1033     if (s->bottom &&
1034         ((s->bottom_end <= s->bottom_start) ||
1035          (RECT_LEFT(*monitor_area) < s->bottom_end &&
1036           RECT_RIGHT(*monitor_area) > s->bottom_start)))
1037         ret->bottom = MAX(ret->bottom, edge);
1038 }
1039
1040 void screen_update_areas()
1041 {
1042     guint i, x;
1043     gulong *dims;
1044     GList *it;
1045     gint o;
1046
1047     g_free(monitor_area);
1048     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
1049
1050     if (area) {
1051         for (i = 0; area[i]; ++i)
1052             g_free(area[i]);
1053         g_free(area);
1054     }
1055
1056     area = g_new(Rect*, screen_num_desktops + 2);
1057     for (i = 0; i < screen_num_desktops + 1; ++i)
1058         area[i] = g_new0(Rect, screen_num_monitors + 1);
1059     area[i] = NULL;
1060
1061     dims = g_new(gulong, 4 * screen_num_desktops);
1062
1063     for (i = 0; i < screen_num_desktops + 1; ++i) {
1064         Strut *struts;
1065         gint l, r, t, b;
1066
1067         struts = g_new0(Strut, screen_num_monitors);
1068
1069         /* calc the xinerama areas */
1070         for (x = 0; x < screen_num_monitors; ++x) {
1071             area[i][x] = monitor_area[x];
1072             if (x == 0) {
1073                 l = monitor_area[x].x;
1074                 t = monitor_area[x].y;
1075                 r = monitor_area[x].x + monitor_area[x].width - 1;
1076                 b = monitor_area[x].y + monitor_area[x].height - 1;
1077             } else {
1078                 l = MIN(l, monitor_area[x].x);
1079                 t = MIN(t, monitor_area[x].y);
1080                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
1081                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
1082             }
1083         }
1084         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
1085
1086         /* apply the struts */
1087
1088         /* find the left-most xin heads, i do this in 2 loops :| */
1089         o = area[i][0].x;
1090         for (x = 1; x < screen_num_monitors; ++x)
1091             o = MIN(o, area[i][x].x);
1092
1093         for (x = 0; x < screen_num_monitors; ++x) {
1094             for (it = client_list; it; it = g_list_next(it)) {
1095                 ObClient *c = it->data;
1096                 screen_area_add_strut_left(&c->strut,
1097                                            &monitor_area[x],
1098                                            o + c->strut.left - area[i][x].x,
1099                                            &struts[x]);
1100             }
1101             screen_area_add_strut_left(&dock_strut,
1102                                        &monitor_area[x],
1103                                        o + dock_strut.left - area[i][x].x,
1104                                        &struts[x]);
1105
1106             area[i][x].x += struts[x].left;
1107             area[i][x].width -= struts[x].left;
1108         }
1109
1110         /* find the top-most xin heads, i do this in 2 loops :| */
1111         o = area[i][0].y;
1112         for (x = 1; x < screen_num_monitors; ++x)
1113             o = MIN(o, area[i][x].y);
1114
1115         for (x = 0; x < screen_num_monitors; ++x) {
1116             for (it = client_list; it; it = g_list_next(it)) {
1117                 ObClient *c = it->data;
1118                 screen_area_add_strut_top(&c->strut,
1119                                            &monitor_area[x],
1120                                            o + c->strut.top - area[i][x].y,
1121                                            &struts[x]);
1122             }
1123             screen_area_add_strut_top(&dock_strut,
1124                                       &monitor_area[x],
1125                                       o + dock_strut.top - area[i][x].y,
1126                                       &struts[x]);
1127
1128             area[i][x].y += struts[x].top;
1129             area[i][x].height -= struts[x].top;
1130         }
1131
1132         /* find the right-most xin heads, i do this in 2 loops :| */
1133         o = area[i][0].x + area[i][0].width - 1;
1134         for (x = 1; x < screen_num_monitors; ++x)
1135             o = MAX(o, area[i][x].x + area[i][x].width - 1);
1136
1137         for (x = 0; x < screen_num_monitors; ++x) {
1138             for (it = client_list; it; it = g_list_next(it)) {
1139                 ObClient *c = it->data;
1140                 screen_area_add_strut_right(&c->strut,
1141                                            &monitor_area[x],
1142                                            (area[i][x].x +
1143                                             area[i][x].width - 1) -
1144                                             (o - c->strut.right),
1145                                             &struts[x]);
1146             }
1147             screen_area_add_strut_right(&dock_strut,
1148                                         &monitor_area[x],
1149                                         (area[i][x].x +
1150                                          area[i][x].width - 1) -
1151                                         (o - dock_strut.right),
1152                                         &struts[x]);
1153
1154             area[i][x].width -= struts[x].right;
1155         }
1156
1157         /* find the bottom-most xin heads, i do this in 2 loops :| */
1158         o = area[i][0].y + area[i][0].height - 1;
1159         for (x = 1; x < screen_num_monitors; ++x)
1160             o = MAX(o, area[i][x].y + area[i][x].height - 1);
1161
1162         for (x = 0; x < screen_num_monitors; ++x) {
1163             for (it = client_list; it; it = g_list_next(it)) {
1164                 ObClient *c = it->data;
1165                 screen_area_add_strut_bottom(&c->strut,
1166                                              &monitor_area[x],
1167                                              (area[i][x].y +
1168                                               area[i][x].height - 1) - \
1169                                              (o - c->strut.bottom),
1170                                              &struts[x]);
1171             }
1172             screen_area_add_strut_bottom(&dock_strut,
1173                                          &monitor_area[x],
1174                                          (area[i][x].y +
1175                                           area[i][x].height - 1) - \
1176                                          (o - dock_strut.bottom),
1177                                          &struts[x]);
1178
1179             area[i][x].height -= struts[x].bottom;
1180         }
1181
1182         l = RECT_LEFT(area[i][0]);
1183         t = RECT_TOP(area[i][0]);
1184         r = RECT_RIGHT(area[i][0]);
1185         b = RECT_BOTTOM(area[i][0]);
1186         for (x = 1; x < screen_num_monitors; ++x) {
1187             l = MIN(l, RECT_LEFT(area[i][x]));
1188             t = MIN(l, RECT_TOP(area[i][x]));
1189             r = MAX(r, RECT_RIGHT(area[i][x]));
1190             b = MAX(b, RECT_BOTTOM(area[i][x]));
1191         }
1192         RECT_SET(area[i][screen_num_monitors], l, t,
1193                  r - l + 1, b - t + 1);
1194
1195         /* XXX optimize when this is run? */
1196
1197         /* the area has changed, adjust all the maximized
1198            windows */
1199         for (it = client_list; it; it = g_list_next(it)) {
1200             ObClient *c = it->data;
1201             if (i < screen_num_desktops) {
1202                 if (c->desktop == i)
1203                     client_reconfigure(c);
1204             } else if (c->desktop == DESKTOP_ALL)
1205                 client_reconfigure(c);
1206         }
1207         if (i < screen_num_desktops) {
1208             /* don't set these for the 'all desktops' area */
1209             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
1210             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
1211             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
1212             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
1213         }
1214
1215         g_free(struts);
1216     }
1217
1218     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
1219                 dims, 4 * screen_num_desktops);
1220
1221     g_free(dims);
1222 }
1223
1224 Rect *screen_area(guint desktop)
1225 {
1226     return screen_area_monitor(desktop, screen_num_monitors);
1227 }
1228
1229 Rect *screen_area_monitor(guint desktop, guint head)
1230 {
1231     if (head > screen_num_monitors)
1232         return NULL;
1233     if (desktop >= screen_num_desktops) {
1234         if (desktop == DESKTOP_ALL)
1235             return &area[screen_num_desktops][head];
1236         return NULL;
1237     }
1238     return &area[desktop][head];
1239 }
1240
1241 guint screen_find_monitor(Rect *search)
1242 {
1243     guint i;
1244     guint most = 0;
1245     guint mostv = 0;
1246
1247     for (i = 0; i < screen_num_monitors; ++i) {
1248         Rect *area = screen_physical_area_monitor(i);
1249         if (RECT_INTERSECTS_RECT(*area, *search)) {
1250             Rect r;
1251             guint v;
1252
1253             RECT_SET_INTERSECTION(r, *area, *search);
1254             v = r.width * r.height;
1255
1256             if (v > mostv) {
1257                 mostv = v;
1258                 most = i;
1259             }
1260         }
1261     }
1262     return most;
1263 }
1264
1265 Rect *screen_physical_area()
1266 {
1267     return screen_physical_area_monitor(screen_num_monitors);
1268 }
1269
1270 Rect *screen_physical_area_monitor(guint head)
1271 {
1272     if (head > screen_num_monitors)
1273         return NULL;
1274     return &monitor_area[head];
1275 }
1276
1277 void screen_set_root_cursor()
1278 {
1279     if (sn_app_starting())
1280         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1281                       ob_cursor(OB_CURSOR_BUSYPOINTER));
1282     else
1283         XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1284                       ob_cursor(OB_CURSOR_POINTER));
1285 }
1286
1287 gboolean screen_pointer_pos(gint *x, gint *y)
1288 {
1289     Window w;
1290     gint i;
1291     guint u;
1292     gboolean ret;
1293
1294     ret = !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
1295                           &w, &w, x, y, &i, &i, &u);
1296     if (!ret) {
1297         for (i = 0; i < ScreenCount(ob_display); ++i)
1298             if (i != ob_screen)
1299                 if (XQueryPointer(ob_display, RootWindow(ob_display, i),
1300                                   &w, &w, x, y, &i, &i, &u))
1301                     break;
1302     }
1303     return ret;
1304 }