openbox/screen.c

   1 #include "debug.h"
   2 #include "openbox.h"
   3 #include "dock.h"
   4 #include "xerror.h"
   5 #include "prop.h"
   6 #include "startup.h"
   7 #include "grab.h"
   8 #include "timer.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 "dispatch.h"
  16 #include "extensions.h"
  17 #include "render/render.h"
  18
  19 #ifdef USE_LIBSN
  20 #  define SN_API_NOT_YET_FROZEN
  21 #  include <libsn/sn.h>
  22 #endif
  23
  24 #include <X11/Xlib.h>
  25 #ifdef HAVE_UNISTD_H
  26 #  include <sys/types.h>
  27 #  include <unistd.h>
  28 #endif
  29 #include <assert.h>
  30
  31 /*! The event mask to grab on the root window */
  32 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
  33                         EnterWindowMask | LeaveWindowMask | \
  34                         SubstructureNotifyMask | SubstructureRedirectMask | \
  35                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  36
  37 guint    screen_num_desktops;
  38 guint    screen_num_monitors;
  39 guint    screen_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 static ObTimer *sn_timer;
  55
  56 static void sn_event_func(SnMonitorEvent *event, void *data);
  57 #endif
  58
  59 static void set_root_cursor();
  60
  61 static gboolean replace_wm()
  62 {
  63     char *wm_sn;
  64     Atom wm_sn_atom;
  65     Window current_wm_sn_owner;
  66     Time timestamp;
  67
  68     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
  69     wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
  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     ob_debug("Managing screen %d\n", ob_screen);
 183
 184     set_root_cursor();
 185
 186     /* set the OPENBOX_PID hint */
 187     pid = getpid();
 188     PROP_SET32(RootWindow(ob_display, ob_screen),
 189                openbox_pid, cardinal, pid);
 190
 191     /* set supporting window */
 192     PROP_SET32(RootWindow(ob_display, ob_screen),
 193                net_supporting_wm_check, window, screen_support_win);
 194
 195     /* set properties on the supporting window */
 196     PROP_SETS(screen_support_win, net_wm_name, "Openbox");
 197     PROP_SET32(screen_support_win, net_supporting_wm_check,
 198                window, screen_support_win);
 199
 200     /* set the _NET_SUPPORTED_ATOMS hint */
 201     num_support = 61;
 202     i = 0;
 203     supported = g_new(guint32, num_support);
 204     supported[i++] = prop_atoms.net_current_desktop;
 205     supported[i++] = prop_atoms.net_number_of_desktops;
 206     supported[i++] = prop_atoms.net_desktop_geometry;
 207     supported[i++] = prop_atoms.net_desktop_viewport;
 208     supported[i++] = prop_atoms.net_active_window;
 209     supported[i++] = prop_atoms.net_workarea;
 210     supported[i++] = prop_atoms.net_client_list;
 211     supported[i++] = prop_atoms.net_client_list_stacking;
 212     supported[i++] = prop_atoms.net_desktop_names;
 213     supported[i++] = prop_atoms.net_close_window;
 214     supported[i++] = prop_atoms.net_desktop_layout;
 215     supported[i++] = prop_atoms.net_showing_desktop;
 216     supported[i++] = prop_atoms.net_wm_name;
 217     supported[i++] = prop_atoms.net_wm_visible_name;
 218     supported[i++] = prop_atoms.net_wm_icon_name;
 219     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 220     supported[i++] = prop_atoms.net_wm_desktop;
 221     supported[i++] = prop_atoms.net_wm_strut;
 222     supported[i++] = prop_atoms.net_wm_window_type;
 223     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 224     supported[i++] = prop_atoms.net_wm_window_type_dock;
 225     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 226     supported[i++] = prop_atoms.net_wm_window_type_menu;
 227     supported[i++] = prop_atoms.net_wm_window_type_utility;
 228     supported[i++] = prop_atoms.net_wm_window_type_splash;
 229     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 230     supported[i++] = prop_atoms.net_wm_window_type_normal;
 231     supported[i++] = prop_atoms.net_wm_allowed_actions;
 232     supported[i++] = prop_atoms.net_wm_action_move;
 233     supported[i++] = prop_atoms.net_wm_action_resize;
 234     supported[i++] = prop_atoms.net_wm_action_minimize;
 235     supported[i++] = prop_atoms.net_wm_action_shade;
 236     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 237     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 238     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 239     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 240     supported[i++] = prop_atoms.net_wm_action_close;
 241     supported[i++] = prop_atoms.net_wm_state;
 242     supported[i++] = prop_atoms.net_wm_state_modal;
 243     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 244     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 245     supported[i++] = prop_atoms.net_wm_state_shaded;
 246     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 247     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 248     supported[i++] = prop_atoms.net_wm_state_hidden;
 249     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 250     supported[i++] = prop_atoms.net_wm_state_above;
 251     supported[i++] = prop_atoms.net_wm_state_below;
 252     supported[i++] = prop_atoms.net_moveresize_window;
 253     supported[i++] = prop_atoms.net_wm_moveresize;
 254     supported[i++] = prop_atoms.net_wm_moveresize_size_topleft;
 255     supported[i++] = prop_atoms.net_wm_moveresize_size_top;
 256     supported[i++] = prop_atoms.net_wm_moveresize_size_topright;
 257     supported[i++] = prop_atoms.net_wm_moveresize_size_right;
 258     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomright;
 259     supported[i++] = prop_atoms.net_wm_moveresize_size_bottom;
 260     supported[i++] = prop_atoms.net_wm_moveresize_size_bottomleft;
 261     supported[i++] = prop_atoms.net_wm_moveresize_size_left;
 262     supported[i++] = prop_atoms.net_wm_moveresize_move;
 263     supported[i++] = prop_atoms.net_wm_moveresize_size_keyboard;
 264     supported[i++] = prop_atoms.net_wm_moveresize_move_keyboard;
 265     g_assert(i == num_support);
 266 /*
 267   supported[] = prop_atoms.net_wm_action_stick;
 268 */
 269
 270     PROP_SETA32(RootWindow(ob_display, ob_screen),
 271                 net_supported, atom, supported, num_support);
 272     g_free(supported);
 273
 274     return TRUE;
 275 }
 276
 277 void screen_startup()
 278 {
 279     GSList *it;
 280     guint i;
 281
 282     desktop_cycle_popup = popup_new(FALSE);
 283
 284     /* get the initial size */
 285     screen_resize();
 286
 287     /* set the names */
 288     screen_desktop_names = g_new(char*,
 289                                  g_slist_length(config_desktops_names) + 1);
 290     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 291         screen_desktop_names[i] = it->data; /* dont strdup */
 292     screen_desktop_names[i] = NULL;
 293     PROP_SETSS(RootWindow(ob_display, ob_screen),
 294                net_desktop_names, screen_desktop_names);
 295     g_free(screen_desktop_names); /* dont free the individual strings */
 296     screen_desktop_names = NULL;
 297
 298     screen_num_desktops = 0;
 299     screen_set_num_desktops(config_desktops_num);
 300     if (startup_desktop >= screen_num_desktops)
 301         startup_desktop = 0;
 302     screen_desktop = startup_desktop;
 303     screen_set_desktop(startup_desktop);
 304
 305     /* don't start in showing-desktop mode */
 306     screen_showing_desktop = FALSE;
 307     PROP_SET32(RootWindow(ob_display, ob_screen),
 308                net_showing_desktop, cardinal, screen_showing_desktop);
 309
 310     screen_update_layout();
 311
 312 #ifdef USE_LIBSN
 313     sn_context = sn_monitor_context_new(ob_sn_display, ob_screen,
 314                                         sn_event_func, NULL, NULL);
 315     sn_busy_cnt = 0;
 316 #endif
 317 }
 318
 319 void screen_shutdown()
 320 {
 321     Rect **r;
 322
 323     popup_free(desktop_cycle_popup);
 324
 325     XSelectInput(ob_display, RootWindow(ob_display, ob_screen), NoEventMask);
 326
 327     /* we're not running here no more! */
 328     PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
 329     /* not without us */
 330     PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
 331     /* don't keep this mode */
 332     PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
 333
 334     XDestroyWindow(ob_display, screen_support_win);
 335
 336     g_strfreev(screen_desktop_names);
 337     for (r = area; *r; ++r)
 338         g_free(*r);
 339     g_free(area);
 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     dispatch_ob(Event_Ob_NumDesktops, num, old);
 418
 419     /* change our desktop if we're on one that no longer exists! */
 420     if (screen_desktop >= screen_num_desktops)
 421         screen_set_desktop(num - 1);
 422 }
 423
 424 void screen_set_desktop(guint num)
 425 {
 426     GList *it;
 427     guint old;
 428     XEvent e;
 429
 430     g_assert(num < screen_num_desktops);
 431
 432     old = screen_desktop;
 433     screen_desktop = num;
 434     PROP_SET32(RootWindow(ob_display, ob_screen),
 435                net_current_desktop, cardinal, num);
 436
 437     if (old == num) return;
 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     dispatch_ob(Event_Ob_Desktop, num, old);
 473 }
 474
 475 static void get_row_col(guint d, guint *r, guint *c)
 476 {
 477     switch (screen_desktop_layout.orientation) {
 478     case OB_ORIENTATION_HORZ:
 479         switch (screen_desktop_layout.start_corner) {
 480         case OB_CORNER_TOPLEFT:
 481             *r = d / screen_desktop_layout.columns;
 482             *c = d % screen_desktop_layout.columns;
 483             break;
 484         case OB_CORNER_BOTTOMLEFT:
 485             *r = screen_desktop_layout.rows - 1 -
 486                 d / screen_desktop_layout.columns;
 487             *c = d % screen_desktop_layout.columns;
 488             break;
 489         case OB_CORNER_TOPRIGHT:
 490             *r = d / screen_desktop_layout.columns;
 491             *c = screen_desktop_layout.columns - 1 -
 492                 d % screen_desktop_layout.columns;
 493             break;
 494         case OB_CORNER_BOTTOMRIGHT:
 495             *r = screen_desktop_layout.rows - 1 -
 496                 d / screen_desktop_layout.columns;
 497             *c = screen_desktop_layout.columns - 1 -
 498                 d % screen_desktop_layout.columns;
 499             break;
 500         }
 501         break;
 502     case OB_ORIENTATION_VERT:
 503         switch (screen_desktop_layout.start_corner) {
 504         case OB_CORNER_TOPLEFT:
 505             *r = d % screen_desktop_layout.rows;
 506             *c = d / screen_desktop_layout.rows;
 507             break;
 508         case OB_CORNER_BOTTOMLEFT:
 509             *r = screen_desktop_layout.rows - 1 -
 510                 d % screen_desktop_layout.rows;
 511             *c = d / screen_desktop_layout.rows;
 512             break;
 513         case OB_CORNER_TOPRIGHT:
 514             *r = d % screen_desktop_layout.rows;
 515             *c = screen_desktop_layout.columns - 1 -
 516                 d / screen_desktop_layout.rows;
 517             break;
 518         case OB_CORNER_BOTTOMRIGHT:
 519             *r = screen_desktop_layout.rows - 1 -
 520                 d % screen_desktop_layout.rows;
 521             *c = screen_desktop_layout.columns - 1 -
 522                 d / screen_desktop_layout.rows;
 523             break;
 524         }
 525         break;
 526     }
 527 }
 528
 529 static guint translate_row_col(guint r, guint c)
 530 {
 531     switch (screen_desktop_layout.orientation) {
 532     case OB_ORIENTATION_HORZ:
 533         switch (screen_desktop_layout.start_corner) {
 534         case OB_CORNER_TOPLEFT:
 535             return r % screen_desktop_layout.rows *
 536                 screen_desktop_layout.columns +
 537                 c % screen_desktop_layout.columns;
 538         case OB_CORNER_BOTTOMLEFT:
 539             return (screen_desktop_layout.rows - 1 -
 540                     r % screen_desktop_layout.rows) *
 541                 screen_desktop_layout.columns +
 542                 c % screen_desktop_layout.columns;
 543         case OB_CORNER_TOPRIGHT:
 544             return r % screen_desktop_layout.rows *
 545                 screen_desktop_layout.columns +
 546                 (screen_desktop_layout.columns - 1 -
 547                  c % screen_desktop_layout.columns);
 548         case OB_CORNER_BOTTOMRIGHT:
 549             return (screen_desktop_layout.rows - 1 -
 550                     r % screen_desktop_layout.rows) *
 551                 screen_desktop_layout.columns +
 552                 (screen_desktop_layout.columns - 1 -
 553                  c % screen_desktop_layout.columns);
 554         }
 555     case OB_ORIENTATION_VERT:
 556         switch (screen_desktop_layout.start_corner) {
 557         case OB_CORNER_TOPLEFT:
 558             return c % screen_desktop_layout.columns *
 559                 screen_desktop_layout.rows +
 560                 r % screen_desktop_layout.rows;
 561         case OB_CORNER_BOTTOMLEFT:
 562             return c % screen_desktop_layout.columns *
 563                 screen_desktop_layout.rows +
 564                 (screen_desktop_layout.rows - 1 -
 565                  r % screen_desktop_layout.rows);
 566         case OB_CORNER_TOPRIGHT:
 567             return (screen_desktop_layout.columns - 1 -
 568                     c % screen_desktop_layout.columns) *
 569                 screen_desktop_layout.rows +
 570                 r % screen_desktop_layout.rows;
 571         case OB_CORNER_BOTTOMRIGHT:
 572             return (screen_desktop_layout.columns - 1 -
 573                     c % screen_desktop_layout.columns) *
 574                 screen_desktop_layout.rows +
 575                 (screen_desktop_layout.rows - 1 -
 576                  r % screen_desktop_layout.rows);
 577         }
 578     }
 579     g_assert_not_reached();
 580     return 0;
 581 }
 582
 583 static void popup_cycle(guint d, gboolean show)
 584 {
 585     Rect *a;
 586
 587     if (!show) {
 588         popup_hide(desktop_cycle_popup);
 589     } else {
 590         a = screen_physical_area_monitor(0);
 591         popup_position(desktop_cycle_popup, CenterGravity,
 592                        a->x + a->width / 2, a->y + a->height / 2);
 593         /* XXX the size and the font extents need to be related on some level
 594          */
 595         popup_size(desktop_cycle_popup, POPUP_WIDTH, POPUP_HEIGHT);
 596
 597         popup_set_text_align(desktop_cycle_popup, RR_JUSTIFY_CENTER);
 598
 599         popup_show(desktop_cycle_popup,
 600                    screen_desktop_names[d], NULL);
 601     }
 602 }
 603
 604 guint screen_cycle_desktop(ObDirection dir, gboolean wrap, gboolean linear,
 605                            gboolean done, gboolean cancel)
 606 {
 607     static gboolean first = TRUE;
 608     static gboolean lin;
 609     static guint origd, d;
 610     guint r, c;
 611
 612     if (cancel) {
 613         d = origd;
 614         goto done_cycle;
 615     } else if (done) {
 616         screen_set_desktop(d);
 617         goto done_cycle;
 618     }
 619     if (first) {
 620         first = FALSE;
 621         lin = linear;
 622         d = origd = screen_desktop;
 623     }
 624
 625     get_row_col(d, &r, &c);
 626
 627     if (lin) {
 628         switch (dir) {
 629         case OB_DIRECTION_EAST:
 630             if (d < screen_num_desktops - 1)
 631                 ++d;
 632             else if (wrap)
 633                 d = 0;
 634             break;
 635         case OB_DIRECTION_WEST:
 636             if (d > 0)
 637                 --d;
 638             else if (wrap)
 639                 d = screen_num_desktops - 1;
 640             break;
 641         default:
 642             assert(0);
 643             return screen_desktop;
 644         }
 645     } else {
 646         switch (dir) {
 647         case OB_DIRECTION_EAST:
 648             ++c;
 649             if (c >= screen_desktop_layout.columns) {
 650                 if (!wrap) return d = screen_desktop;
 651                 c = 0;
 652             }
 653             d = translate_row_col(r, c);
 654             if (d >= screen_num_desktops) {
 655                 if (!wrap) return d = screen_desktop;
 656                 ++c;
 657             }
 658             break;
 659         case OB_DIRECTION_WEST:
 660             --c;
 661             if (c >= screen_desktop_layout.columns) {
 662                 if (!wrap) return d = screen_desktop;
 663                 c = screen_desktop_layout.columns - 1;
 664             }
 665             d = translate_row_col(r, c);
 666             if (d >= screen_num_desktops) {
 667                 if (!wrap) return d = screen_desktop;
 668                 --c;
 669             }
 670             break;
 671         case OB_DIRECTION_SOUTH:
 672             ++r;
 673             if (r >= screen_desktop_layout.rows) {
 674                 if (!wrap) return d = screen_desktop;
 675                 r = 0;
 676             }
 677             d = translate_row_col(r, c);
 678             if (d >= screen_num_desktops) {
 679                 if (!wrap) return d = screen_desktop;
 680                 ++r;
 681             }
 682             break;
 683         case OB_DIRECTION_NORTH:
 684             --r;
 685             if (r >= screen_desktop_layout.rows) {
 686                 if (!wrap) return d = screen_desktop;
 687                 r = screen_desktop_layout.rows - 1;
 688             }
 689             d = translate_row_col(r, c);
 690             if (d >= screen_num_desktops) {
 691                 if (!wrap) return d = screen_desktop;
 692                 --r;
 693             }
 694             break;
 695         default:
 696             assert(0);
 697             return d = screen_desktop;
 698         }
 699
 700         d = translate_row_col(r, c);
 701     }
 702
 703     popup_cycle(d, TRUE);
 704     return d;
 705
 706 done_cycle:
 707     first = TRUE;
 708
 709     popup_cycle(0, FALSE);
 710
 711     return d = screen_desktop;
 712 }
 713
 714 void screen_update_layout()
 715 {
 716     ObOrientation orient;
 717     ObCorner corner;
 718     guint rows;
 719     guint cols;
 720     guint32 *data;
 721     guint num;
 722     gboolean valid = FALSE;
 723
 724     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
 725                     net_desktop_layout, cardinal, &data, &num)) {
 726         if (num == 3 || num == 4) {
 727
 728             if (data[0] == prop_atoms.net_wm_orientation_vert)
 729                 orient = OB_ORIENTATION_VERT;
 730             else if (data[0] == prop_atoms.net_wm_orientation_horz)
 731                 orient = OB_ORIENTATION_HORZ;
 732             else
 733                 goto screen_update_layout_bail;
 734
 735             if (num < 4)
 736                 corner = OB_CORNER_TOPLEFT;
 737             else {
 738                 if (data[3] == prop_atoms.net_wm_topleft)
 739                     corner = OB_CORNER_TOPLEFT;
 740                 else if (data[3] == prop_atoms.net_wm_topright)
 741                     corner = OB_CORNER_TOPRIGHT;
 742                 else if (data[3] == prop_atoms.net_wm_bottomright)
 743                     corner = OB_CORNER_BOTTOMRIGHT;
 744                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 745                     corner = OB_CORNER_BOTTOMLEFT;
 746                 else
 747                     goto screen_update_layout_bail;
 748             }
 749
 750             /* fill in a zero rows/columns */
 751             if ((data[1] == 0 && data[2] == 0) || /* both 0's is bad data.. */
 752                 (data[1] != 0 && data[2] != 0)) { /* no 0's is bad data.. */
 753                 goto screen_update_layout_bail;
 754             } else {
 755                 if (data[1] == 0) {
 756                     data[1] = (screen_num_desktops +
 757                                screen_num_desktops % data[2]) / data[2];
 758                 } else if (data[2] == 0) {
 759                     data[2] = (screen_num_desktops +
 760                                screen_num_desktops % data[1]) / data[1];
 761                 }
 762                 cols = data[1];
 763                 rows = data[2];
 764             }
 765
 766             /* bounds checking */
 767             if (orient == OB_ORIENTATION_HORZ) {
 768                 rows = MIN(rows, screen_num_desktops);
 769                 cols = MIN(cols, ((screen_num_desktops +
 770                                      (screen_num_desktops % rows)) / rows));
 771             } else {
 772                 cols = MIN(cols, screen_num_desktops);
 773                 rows = MIN(rows, ((screen_num_desktops +
 774                                      (screen_num_desktops % cols)) / cols));
 775             }
 776
 777             valid = TRUE;
 778         }
 779     screen_update_layout_bail:
 780         g_free(data);
 781     }
 782
 783     if (!valid) {
 784         /* defaults */
 785         orient = OB_ORIENTATION_HORZ;
 786         corner = OB_CORNER_TOPLEFT;
 787         rows = 1;
 788         cols = screen_num_desktops;
 789     }
 790
 791     screen_desktop_layout.orientation = orient;
 792     screen_desktop_layout.start_corner = corner;
 793     screen_desktop_layout.rows = rows;
 794     screen_desktop_layout.columns = cols;
 795 }
 796
 797 void screen_update_desktop_names()
 798 {
 799     guint i;
 800
 801     /* empty the array */
 802     g_strfreev(screen_desktop_names);
 803     screen_desktop_names = NULL;
 804
 805     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
 806                    net_desktop_names, utf8, &screen_desktop_names))
 807         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 808     else
 809         i = 0;
 810     if (i <= screen_num_desktops) {
 811         screen_desktop_names = g_renew(char*, screen_desktop_names,
 812                                        screen_num_desktops + 1);
 813         screen_desktop_names[screen_num_desktops] = NULL;
 814         for (; i < screen_num_desktops; ++i)
 815             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 816     }
 817 }
 818
 819 void screen_show_desktop(gboolean show)
 820 {
 821     GList *it;
 822
 823     if (show == screen_showing_desktop) return; /* no change */
 824
 825     screen_showing_desktop = show;
 826
 827     if (show) {
 828         /* bottom to top */
 829         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 830             if (WINDOW_IS_CLIENT(it->data)) {
 831                 ObClient *client = it->data;
 832                 if (client->frame->visible && !client_should_show(client))
 833                     frame_hide(client->frame);
 834             }
 835         }
 836     } else {
 837         /* top to bottom */
 838         for (it = stacking_list; it != NULL; it = it->next) {
 839             if (WINDOW_IS_CLIENT(it->data)) {
 840                 ObClient *client = it->data;
 841                 if (!client->frame->visible && client_should_show(client))
 842                     frame_show(client->frame);
 843             }
 844         }
 845     }
 846
 847     if (show) {
 848         /* focus desktop */
 849         for (it = focus_order[screen_desktop]; it; it = it->next)
 850             if (((ObClient*)it->data)->type == OB_CLIENT_TYPE_DESKTOP &&
 851                 client_focus(it->data))
 852                 break;
 853     } else {
 854         focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 855     }
 856
 857     show = !!show; /* make it boolean */
 858     PROP_SET32(RootWindow(ob_display, ob_screen),
 859                net_showing_desktop, cardinal, show);
 860
 861     dispatch_ob(Event_Ob_ShowDesktop, show, 0);
 862 }
 863
 864 void screen_install_colormap(ObClient *client, gboolean install)
 865 {
 866     XWindowAttributes wa;
 867
 868     if (client == NULL) {
 869         if (install)
 870             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 871         else
 872             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 873     } else {
 874         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 875             wa.colormap != None) {
 876             xerror_set_ignore(TRUE);
 877             if (install)
 878                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 879             else
 880                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 881             xerror_set_ignore(FALSE);
 882         }
 883     }
 884 }
 885
 886 void screen_update_areas()
 887 {
 888     guint i, x;
 889     guint32 *dims;
 890     GList *it;
 891
 892     g_free(monitor_area);
 893     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
 894
 895     if (area) {
 896         for (i = 0; area[i]; ++i)
 897             g_free(area[i]);
 898         g_free(area);
 899     }
 900
 901     area = g_new(Rect*, screen_num_desktops + 2);
 902     for (i = 0; i < screen_num_desktops + 1; ++i)
 903         area[i] = g_new(Rect, screen_num_monitors + 1);
 904     area[i] = NULL;
 905
 906     dims = g_new(guint32, 4 * screen_num_desktops);
 907
 908     for (i = 0; i < screen_num_desktops + 1; ++i) {
 909         Strut s;
 910         int l, r, t, b;
 911
 912         /* calc the xinerama areas */
 913         for (x = 0; x < screen_num_monitors; ++x) {
 914             area[i][x] = monitor_area[x];
 915             if (x == 0) {
 916                 l = monitor_area[x].x;
 917                 t = monitor_area[x].y;
 918                 r = monitor_area[x].x + monitor_area[x].width - 1;
 919                 b = monitor_area[x].y + monitor_area[x].height - 1;
 920             } else {
 921                 l = MIN(l, monitor_area[x].x);
 922                 t = MIN(t, monitor_area[x].y);
 923                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
 924                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
 925             }
 926         }
 927         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
 928
 929         /* apply struts */
 930         STRUT_SET(s, 0, 0, 0, 0);
 931         for (it = client_list; it; it = it->next)
 932             STRUT_ADD(s, ((ObClient*)it->data)->strut);
 933         STRUT_ADD(s, dock_strut);
 934
 935         if (s.left) {
 936             int o;
 937
 938             /* find the left-most xin heads, i do this in 2 loops :| */
 939             o = area[i][0].x;
 940             for (x = 1; x < screen_num_monitors; ++x)
 941                 o = MIN(o, area[i][x].x);
 942
 943             for (x = 0; x < screen_num_monitors; ++x) {
 944                 int edge = o + s.left - area[i][x].x;
 945                 if (edge > 0) {
 946                     area[i][x].x += edge;
 947                     area[i][x].width -= edge;
 948                 }
 949             }
 950
 951             area[i][screen_num_monitors].x += s.left;
 952             area[i][screen_num_monitors].width -= s.left;
 953         }
 954         if (s.top) {
 955             int o;
 956
 957             /* find the left-most xin heads, i do this in 2 loops :| */
 958             o = area[i][0].y;
 959             for (x = 1; x < screen_num_monitors; ++x)
 960                 o = MIN(o, area[i][x].y);
 961
 962             for (x = 0; x < screen_num_monitors; ++x) {
 963                 int edge = o + s.top - area[i][x].y;
 964                 if (edge > 0) {
 965                     area[i][x].y += edge;
 966                     area[i][x].height -= edge;
 967                 }
 968             }
 969
 970             area[i][screen_num_monitors].y += s.top;
 971             area[i][screen_num_monitors].height -= s.top;
 972         }
 973         if (s.right) {
 974             int o;
 975
 976             /* find the bottom-most xin heads, i do this in 2 loops :| */
 977             o = area[i][0].x + area[i][0].width - 1;
 978             for (x = 1; x < screen_num_monitors; ++x)
 979                 o = MAX(o, area[i][x].x + area[i][x].width - 1);
 980
 981             for (x = 0; x < screen_num_monitors; ++x) {
 982                 int edge = (area[i][x].x + area[i][x].width - 1) -
 983                     (o - s.right);
 984                 if (edge > 0)
 985                     area[i][x].width -= edge;
 986             }
 987
 988             area[i][screen_num_monitors].width -= s.right;
 989         }
 990         if (s.bottom) {
 991             int o;
 992
 993             /* find the bottom-most xin heads, i do this in 2 loops :| */
 994             o = area[i][0].y + area[i][0].height - 1;
 995             for (x = 1; x < screen_num_monitors; ++x)
 996                 o = MAX(o, area[i][x].y + area[i][x].height - 1);
 997
 998             for (x = 0; x < screen_num_monitors; ++x) {
 999                 int edge = (area[i][x].y + area[i][x].height - 1) -
1000                     (o - s.bottom);
1001                 if (edge > 0)
1002                     area[i][x].height -= edge;
1003             }
1004
1005             area[i][screen_num_monitors].height -= s.bottom;
1006         }
1007
1008         /* XXX when dealing with partial struts, if its in a single
1009            xinerama area, then only subtract it from that area's space
1010         for (x = 0; x < screen_num_monitors; ++x) {
1011             GList *it;
1012
1013
1014                do something smart with it for the 'all xinerama areas' one...
1015
1016             for (it = client_list; it; it = it->next) {
1017
1018                 XXX if gunna test this shit, then gotta worry about when
1019                 the client moves between xinerama heads..
1020
1021                 if (RECT_CONTAINS_RECT(((ObClient*)it->data)->frame->area,
1022                                        area[i][x])) {
1023
1024                 }
1025             }
1026         }
1027         */
1028
1029         /* XXX optimize when this is run? */
1030
1031         /* the area has changed, adjust all the maximized
1032            windows */
1033         for (it = client_list; it; it = it->next) {
1034             ObClient *c = it->data;
1035             if (i < screen_num_desktops) {
1036                 if (c->desktop == i)
1037                     client_reconfigure(c);
1038             } else if (c->desktop == DESKTOP_ALL)
1039                 client_reconfigure(c);
1040         }
1041         if (i < screen_num_desktops) {
1042             /* don't set these for the 'all desktops' area */
1043             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
1044             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
1045             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
1046             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
1047         }
1048     }
1049     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
1050                 dims, 4 * screen_num_desktops);
1051
1052     g_free(dims);
1053 }
1054
1055 Rect *screen_area(guint desktop)
1056 {
1057     return screen_area_monitor(desktop, screen_num_monitors);
1058 }
1059
1060 Rect *screen_area_monitor(guint desktop, guint head)
1061 {
1062     if (head > screen_num_monitors)
1063         return NULL;
1064     if (desktop >= screen_num_desktops) {
1065         if (desktop == DESKTOP_ALL)
1066             return &area[screen_num_desktops][head];
1067         return NULL;
1068     }
1069     return &area[desktop][head];
1070 }
1071
1072 Rect *screen_physical_area()
1073 {
1074     return screen_physical_area_monitor(screen_num_monitors);
1075 }
1076
1077 Rect *screen_physical_area_monitor(guint head)
1078 {
1079     if (head > screen_num_monitors)
1080         return NULL;
1081     return &monitor_area[head];
1082 }
1083
1084 static void set_root_cursor()
1085 {
1086 #ifdef USE_LIBSN
1087         if (sn_busy_cnt)
1088             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1089                           ob_cursor(OB_CURSOR_BUSY));
1090         else
1091 #endif
1092             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1093                           ob_cursor(OB_CURSOR_POINTER));
1094 }
1095
1096 #ifdef USE_LIBSN
1097 static void sn_timeout(ObTimer *t, void *data)
1098 {
1099     timer_stop(sn_timer);
1100     sn_timer = NULL;
1101     sn_busy_cnt = 0;
1102
1103     set_root_cursor();
1104 }
1105
1106 static void sn_event_func(SnMonitorEvent *ev, void *data)
1107 {
1108     SnStartupSequence *seq;
1109     const char *seq_id, *bin_name;
1110     int cnt = sn_busy_cnt;
1111
1112     if (!(seq = sn_monitor_event_get_startup_sequence(ev)))
1113         return;
1114
1115     seq_id = sn_startup_sequence_get_id(seq);
1116     bin_name = sn_startup_sequence_get_binary_name(seq);
1117
1118     if (!(seq_id && bin_name))
1119         return;
1120
1121     switch (sn_monitor_event_get_type(ev)) {
1122     case SN_MONITOR_EVENT_INITIATED:
1123         ++sn_busy_cnt;
1124         if (sn_timer)
1125             timer_stop(sn_timer);
1126         /* 30 second timeout for apps to start */
1127         sn_timer = timer_start(30 * 1000000, sn_timeout, NULL);
1128         break;
1129     case SN_MONITOR_EVENT_CHANGED:
1130         break;
1131     case SN_MONITOR_EVENT_COMPLETED:
1132         if (sn_busy_cnt) --sn_busy_cnt;
1133         if (sn_timer) {
1134             timer_stop(sn_timer);
1135             sn_timer = NULL;
1136         }
1137         break;
1138     case SN_MONITOR_EVENT_CANCELED:
1139         if (sn_busy_cnt) --sn_busy_cnt;
1140         if (sn_timer) {
1141             timer_stop(sn_timer);
1142             sn_timer = NULL;
1143         }
1144     };
1145
1146     if (sn_busy_cnt != cnt)
1147         set_root_cursor();
1148 }
1149 #endif
1150
1151 gboolean screen_pointer_pos(int *x, int *y)
1152 {
1153     Window w;
1154     int i;
1155     guint u;
1156
1157     return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
1158                            &w, &w, x, y, &i, &i, &u);
1159 }