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 "extensions.h"
  16 #include "render/render.h"
  17
  18 #ifdef USE_LIBSN
  19 #  define SN_API_NOT_YET_FROZEN
  20 #  include <libsn/sn.h>
  21 #endif
  22
  23 #include <X11/Xlib.h>
  24 #ifdef HAVE_UNISTD_H
  25 #  include <sys/types.h>
  26 #  include <unistd.h>
  27 #endif
  28 #include <assert.h>
  29
  30 /*! The event mask to grab on the root window */
  31 #define ROOT_EVENTMASK (StructureNotifyMask | PropertyChangeMask | \
  32                         EnterWindowMask | LeaveWindowMask | \
  33                         SubstructureNotifyMask | SubstructureRedirectMask | \
  34                         ButtonPressMask | ButtonReleaseMask | ButtonMotionMask)
  35
  36 guint    screen_num_desktops;
  37 guint    screen_num_monitors;
  38 guint    screen_desktop;
  39 Size     screen_physical_size;
  40 gboolean screen_showing_desktop;
  41 DesktopLayout screen_desktop_layout;
  42 char   **screen_desktop_names;
  43 Window   screen_support_win;
  44
  45 static Rect  **area; /* array of desktop holding array of xinerama areas */
  46 static Rect  *monitor_area;
  47
  48 static Popup *desktop_cycle_popup;
  49
  50 #ifdef USE_LIBSN
  51 static SnMonitorContext *sn_context;
  52 static int sn_busy_cnt;
  53 static ObTimer *sn_timer;
  54
  55 static void sn_event_func(SnMonitorEvent *event, void *data);
  56 #endif
  57
  58 static void set_root_cursor();
  59
  60 static gboolean replace_wm()
  61 {
  62     char *wm_sn;
  63     Atom wm_sn_atom;
  64     Window current_wm_sn_owner;
  65     Time timestamp;
  66
  67     wm_sn = g_strdup_printf("WM_S%d", ob_screen);
  68     wm_sn_atom = XInternAtom(ob_display, wm_sn, FALSE);
  69     g_free(wm_sn);
  70
  71     current_wm_sn_owner = XGetSelectionOwner(ob_display, wm_sn_atom);
  72     if (current_wm_sn_owner) {
  73         if (!ob_replace_wm) {
  74             g_warning("A window manager is already running on screen %d",
  75                       ob_screen);
  76             return FALSE;
  77         }
  78         xerror_set_ignore(TRUE);
  79         xerror_occured = FALSE;
  80
  81         /* We want to find out when the current selection owner dies */
  82         XSelectInput(ob_display, current_wm_sn_owner, StructureNotifyMask);
  83         XSync(ob_display, FALSE);
  84
  85         xerror_set_ignore(FALSE);
  86         if (xerror_occured)
  87             current_wm_sn_owner = None;
  88     }
  89
  90     {
  91         /* Generate a timestamp */
  92         XEvent event;
  93
  94         XSelectInput(ob_display, screen_support_win, PropertyChangeMask);
  95
  96         XChangeProperty(ob_display, screen_support_win,
  97                         prop_atoms.wm_class, prop_atoms.string,
  98                         8, PropModeAppend, NULL, 0);
  99         XWindowEvent(ob_display, screen_support_win,
 100                      PropertyChangeMask, &event);
 101
 102         XSelectInput(ob_display, screen_support_win, NoEventMask);
 103
 104         timestamp = event.xproperty.time;
 105     }
 106
 107     XSetSelectionOwner(ob_display, wm_sn_atom, screen_support_win,
 108                        timestamp);
 109
 110     if (XGetSelectionOwner(ob_display, wm_sn_atom) != screen_support_win) {
 111         g_warning("Could not acquire window manager selection on screen %d",
 112                   ob_screen);
 113         return FALSE;
 114     }
 115
 116     /* Wait for old window manager to go away */
 117     if (current_wm_sn_owner) {
 118       XEvent event;
 119       gulong wait = 0;
 120       const gulong timeout = G_USEC_PER_SEC * 15; /* wait for 15s max */
 121
 122       while (wait < timeout) {
 123           if (XCheckWindowEvent(ob_display, current_wm_sn_owner,
 124                                 StructureNotifyMask, &event) &&
 125               event.type == DestroyNotify)
 126               break;
 127           g_usleep(G_USEC_PER_SEC / 10);
 128           wait += G_USEC_PER_SEC / 10;
 129       }
 130
 131       if (wait >= timeout) {
 132           g_warning("Timeout expired while waiting for the current WM to die "
 133                     "on screen %d", ob_screen);
 134           return FALSE;
 135       }
 136     }
 137
 138     /* Send client message indicating that we are now the WM */
 139     prop_message(RootWindow(ob_display, ob_screen), prop_atoms.manager,
 140                  timestamp, wm_sn_atom, 0, 0, SubstructureNotifyMask);
 141
 142
 143     return TRUE;
 144 }
 145
 146 gboolean screen_annex()
 147 {
 148     XSetWindowAttributes attrib;
 149     pid_t pid;
 150     gint i, num_support;
 151     guint32 *supported;
 152
 153     /* create the netwm support window */
 154     attrib.override_redirect = TRUE;
 155     screen_support_win = XCreateWindow(ob_display,
 156                                        RootWindow(ob_display, ob_screen),
 157                                        -100, -100, 1, 1, 0,
 158                                        CopyFromParent, InputOutput,
 159                                        CopyFromParent,
 160                                        CWOverrideRedirect, &attrib);
 161     XMapRaised(ob_display, screen_support_win);
 162
 163     if (!replace_wm()) {
 164         XDestroyWindow(ob_display, screen_support_win);
 165         return FALSE;
 166     }
 167
 168     xerror_set_ignore(TRUE);
 169     xerror_occured = FALSE;
 170     XSelectInput(ob_display, RootWindow(ob_display, ob_screen),
 171                  ROOT_EVENTMASK);
 172     xerror_set_ignore(FALSE);
 173     if (xerror_occured) {
 174         g_warning("A window manager is already running on screen %d",
 175                   ob_screen);
 176
 177         XDestroyWindow(ob_display, screen_support_win);
 178         return FALSE;
 179     }
 180
 181
 182     set_root_cursor();
 183
 184     /* set the OPENBOX_PID hint */
 185     pid = getpid();
 186     PROP_SET32(RootWindow(ob_display, ob_screen),
 187                openbox_pid, cardinal, pid);
 188
 189     /* set supporting window */
 190     PROP_SET32(RootWindow(ob_display, ob_screen),
 191                net_supporting_wm_check, window, screen_support_win);
 192
 193     /* set properties on the supporting window */
 194     PROP_SETS(screen_support_win, net_wm_name, "Openbox");
 195     PROP_SET32(screen_support_win, net_supporting_wm_check,
 196                window, screen_support_win);
 197
 198     /* set the _NET_SUPPORTED_ATOMS hint */
 199     num_support = 50;
 200     i = 0;
 201     supported = g_new(guint32, num_support);
 202     supported[i++] = prop_atoms.net_current_desktop;
 203     supported[i++] = prop_atoms.net_number_of_desktops;
 204     supported[i++] = prop_atoms.net_desktop_geometry;
 205     supported[i++] = prop_atoms.net_desktop_viewport;
 206     supported[i++] = prop_atoms.net_active_window;
 207     supported[i++] = prop_atoms.net_workarea;
 208     supported[i++] = prop_atoms.net_client_list;
 209     supported[i++] = prop_atoms.net_client_list_stacking;
 210     supported[i++] = prop_atoms.net_desktop_names;
 211     supported[i++] = prop_atoms.net_close_window;
 212     supported[i++] = prop_atoms.net_desktop_layout;
 213     supported[i++] = prop_atoms.net_showing_desktop;
 214     supported[i++] = prop_atoms.net_wm_name;
 215     supported[i++] = prop_atoms.net_wm_visible_name;
 216     supported[i++] = prop_atoms.net_wm_icon_name;
 217     supported[i++] = prop_atoms.net_wm_visible_icon_name;
 218     supported[i++] = prop_atoms.net_wm_desktop;
 219     supported[i++] = prop_atoms.net_wm_strut;
 220     supported[i++] = prop_atoms.net_wm_window_type;
 221     supported[i++] = prop_atoms.net_wm_window_type_desktop;
 222     supported[i++] = prop_atoms.net_wm_window_type_dock;
 223     supported[i++] = prop_atoms.net_wm_window_type_toolbar;
 224     supported[i++] = prop_atoms.net_wm_window_type_menu;
 225     supported[i++] = prop_atoms.net_wm_window_type_utility;
 226     supported[i++] = prop_atoms.net_wm_window_type_splash;
 227     supported[i++] = prop_atoms.net_wm_window_type_dialog;
 228     supported[i++] = prop_atoms.net_wm_window_type_normal;
 229     supported[i++] = prop_atoms.net_wm_allowed_actions;
 230     supported[i++] = prop_atoms.net_wm_action_move;
 231     supported[i++] = prop_atoms.net_wm_action_resize;
 232     supported[i++] = prop_atoms.net_wm_action_minimize;
 233     supported[i++] = prop_atoms.net_wm_action_shade;
 234     supported[i++] = prop_atoms.net_wm_action_maximize_horz;
 235     supported[i++] = prop_atoms.net_wm_action_maximize_vert;
 236     supported[i++] = prop_atoms.net_wm_action_fullscreen;
 237     supported[i++] = prop_atoms.net_wm_action_change_desktop;
 238     supported[i++] = prop_atoms.net_wm_action_close;
 239     supported[i++] = prop_atoms.net_wm_state;
 240     supported[i++] = prop_atoms.net_wm_state_modal;
 241     supported[i++] = prop_atoms.net_wm_state_maximized_vert;
 242     supported[i++] = prop_atoms.net_wm_state_maximized_horz;
 243     supported[i++] = prop_atoms.net_wm_state_shaded;
 244     supported[i++] = prop_atoms.net_wm_state_skip_taskbar;
 245     supported[i++] = prop_atoms.net_wm_state_skip_pager;
 246     supported[i++] = prop_atoms.net_wm_state_hidden;
 247     supported[i++] = prop_atoms.net_wm_state_fullscreen;
 248     supported[i++] = prop_atoms.net_wm_state_above;
 249     supported[i++] = prop_atoms.net_wm_state_below;
 250     supported[i++] = prop_atoms.net_moveresize_window;
 251     supported[i++] = prop_atoms.net_wm_moveresize;
 252     g_assert(i == num_support);
 253 /*
 254   supported[] = prop_atoms.net_wm_action_stick;
 255 */
 256
 257     PROP_SETA32(RootWindow(ob_display, ob_screen),
 258                 net_supported, atom, supported, num_support);
 259     g_free(supported);
 260
 261     return TRUE;
 262 }
 263
 264 void screen_startup()
 265 {
 266     GSList *it;
 267     guint i;
 268
 269     desktop_cycle_popup = popup_new(FALSE);
 270
 271     /* get the initial size */
 272     screen_resize();
 273
 274     /* set the names */
 275     screen_desktop_names = g_new(char*,
 276                                  g_slist_length(config_desktops_names) + 1);
 277     for (i = 0, it = config_desktops_names; it; ++i, it = it->next)
 278         screen_desktop_names[i] = it->data; /* dont strdup */
 279     screen_desktop_names[i] = NULL;
 280     PROP_SETSS(RootWindow(ob_display, ob_screen),
 281                net_desktop_names, screen_desktop_names);
 282     g_free(screen_desktop_names); /* dont free the individual strings */
 283     screen_desktop_names = NULL;
 284
 285     screen_num_desktops = 0;
 286     screen_set_num_desktops(config_desktops_num);
 287     if (startup_desktop >= screen_num_desktops)
 288         startup_desktop = 0;
 289     screen_desktop = startup_desktop;
 290     screen_set_desktop(startup_desktop);
 291
 292     /* don't start in showing-desktop mode */
 293     screen_showing_desktop = FALSE;
 294     PROP_SET32(RootWindow(ob_display, ob_screen),
 295                net_showing_desktop, cardinal, screen_showing_desktop);
 296
 297     screen_update_layout();
 298
 299 #ifdef USE_LIBSN
 300     sn_context = sn_monitor_context_new(ob_sn_display, ob_screen,
 301                                         sn_event_func, NULL, NULL);
 302     sn_busy_cnt = 0;
 303 #endif
 304 }
 305
 306 void screen_shutdown()
 307 {
 308     Rect **r;
 309
 310     popup_free(desktop_cycle_popup);
 311
 312     XSelectInput(ob_display, RootWindow(ob_display, ob_screen), NoEventMask);
 313
 314     /* we're not running here no more! */
 315     PROP_ERASE(RootWindow(ob_display, ob_screen), openbox_pid);
 316     /* not without us */
 317     PROP_ERASE(RootWindow(ob_display, ob_screen), net_supported);
 318     /* don't keep this mode */
 319     PROP_ERASE(RootWindow(ob_display, ob_screen), net_showing_desktop);
 320
 321     XDestroyWindow(ob_display, screen_support_win);
 322
 323     g_strfreev(screen_desktop_names);
 324     for (r = area; *r; ++r)
 325         g_free(*r);
 326     g_free(area);
 327 }
 328
 329 void screen_resize()
 330 {
 331     static int oldw = 0, oldh = 0;
 332     int w, h;
 333     GList *it;
 334     guint32 geometry[2];
 335
 336     w = WidthOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 337     h = HeightOfScreen(ScreenOfDisplay(ob_display, ob_screen));
 338
 339     if (w == oldw && h == oldh) return;
 340
 341     oldw = w; oldh = h;
 342
 343     /* Set the _NET_DESKTOP_GEOMETRY hint */
 344     screen_physical_size.width = geometry[0] = w;
 345     screen_physical_size.height = geometry[1] = h;
 346     PROP_SETA32(RootWindow(ob_display, ob_screen),
 347                 net_desktop_geometry, cardinal, geometry, 2);
 348
 349     if (ob_state() == OB_STATE_STARTING)
 350         return;
 351
 352     screen_update_areas();
 353     dock_configure();
 354
 355     for (it = client_list; it; it = it->next)
 356         client_move_onscreen(it->data, FALSE);
 357 }
 358
 359 void screen_set_num_desktops(guint num)
 360 {
 361     guint i, old;
 362     guint32 *viewport;
 363     GList *it;
 364
 365     g_assert(num > 0);
 366
 367     old = screen_num_desktops;
 368     screen_num_desktops = num;
 369     PROP_SET32(RootWindow(ob_display, ob_screen),
 370                net_number_of_desktops, cardinal, num);
 371
 372     /* set the viewport hint */
 373     viewport = g_new0(guint32, num * 2);
 374     PROP_SETA32(RootWindow(ob_display, ob_screen),
 375                 net_desktop_viewport, cardinal, viewport, num * 2);
 376     g_free(viewport);
 377
 378     /* the number of rows/columns will differ */
 379     screen_update_layout();
 380
 381     /* may be some unnamed desktops that we need to fill in with names */
 382     screen_update_desktop_names();
 383
 384     /* update the focus lists */
 385     /* free our lists for the desktops which have disappeared */
 386     for (i = num; i < old; ++i)
 387         g_list_free(focus_order[i]);
 388     /* realloc the array */
 389     focus_order = g_renew(GList*, focus_order, num);
 390     /* set the new lists to be empty */
 391     for (i = old; i < num; ++i)
 392         focus_order[i] = NULL;
 393
 394     /* move windows on desktops that will no longer exist! */
 395     for (it = client_list; it != NULL; it = it->next) {
 396         ObClient *c = it->data;
 397         if (c->desktop >= num && c->desktop != DESKTOP_ALL)
 398             client_set_desktop(c, num - 1, FALSE);
 399     }
 400
 401     /* change our struts/area to match (after moving windows) */
 402     screen_update_areas();
 403
 404     /* change our desktop if we're on one that no longer exists! */
 405     if (screen_desktop >= screen_num_desktops)
 406         screen_set_desktop(num - 1);
 407 }
 408
 409 void screen_set_desktop(guint num)
 410 {
 411     GList *it;
 412     guint old;
 413     XEvent e;
 414
 415     g_assert(num < screen_num_desktops);
 416
 417     old = screen_desktop;
 418     screen_desktop = num;
 419     PROP_SET32(RootWindow(ob_display, ob_screen),
 420                net_current_desktop, cardinal, num);
 421
 422     if (old == num) return;
 423
 424     ob_debug("Moving to desktop %d\n", num+1);
 425
 426     /* show windows before hiding the rest to lessen the enter/leave events */
 427
 428     /* show windows from top to bottom */
 429     for (it = stacking_list; it != NULL; it = it->next) {
 430         if (WINDOW_IS_CLIENT(it->data)) {
 431             ObClient *c = it->data;
 432             if (!c->frame->visible && client_should_show(c))
 433                 frame_show(c->frame);
 434         }
 435     }
 436
 437     /* hide windows from bottom to top */
 438     for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 439         if (WINDOW_IS_CLIENT(it->data)) {
 440             ObClient *c = it->data;
 441             if (c->frame->visible && !client_should_show(c))
 442                 frame_hide(c->frame);
 443         }
 444     }
 445
 446     /* focus the last focused window on the desktop, and ignore enter events
 447        from the switch so it doesnt mess with the focus */
 448     while (XCheckTypedEvent(ob_display, EnterNotify, &e));
 449 #ifdef DEBUG_FOCUS
 450     ob_debug("switch fallback\n");
 451 #endif
 452     focus_fallback(OB_FOCUS_FALLBACK_DESKTOP);
 453 #ifdef DEBUG_FOCUS
 454     ob_debug("/switch fallback\n");
 455 #endif
 456 }
 457
 458 static void get_row_col(guint d, guint *r, guint *c)
 459 {
 460     switch (screen_desktop_layout.orientation) {
 461     case OB_ORIENTATION_HORZ:
 462         switch (screen_desktop_layout.start_corner) {
 463         case OB_CORNER_TOPLEFT:
 464             *r = d / screen_desktop_layout.columns;
 465             *c = d % screen_desktop_layout.columns;
 466             break;
 467         case OB_CORNER_BOTTOMLEFT:
 468             *r = screen_desktop_layout.rows - 1 -
 469                 d / screen_desktop_layout.columns;
 470             *c = d % screen_desktop_layout.columns;
 471             break;
 472         case OB_CORNER_TOPRIGHT:
 473             *r = d / screen_desktop_layout.columns;
 474             *c = screen_desktop_layout.columns - 1 -
 475                 d % screen_desktop_layout.columns;
 476             break;
 477         case OB_CORNER_BOTTOMRIGHT:
 478             *r = screen_desktop_layout.rows - 1 -
 479                 d / screen_desktop_layout.columns;
 480             *c = screen_desktop_layout.columns - 1 -
 481                 d % screen_desktop_layout.columns;
 482             break;
 483         }
 484         break;
 485     case OB_ORIENTATION_VERT:
 486         switch (screen_desktop_layout.start_corner) {
 487         case OB_CORNER_TOPLEFT:
 488             *r = d % screen_desktop_layout.rows;
 489             *c = d / screen_desktop_layout.rows;
 490             break;
 491         case OB_CORNER_BOTTOMLEFT:
 492             *r = screen_desktop_layout.rows - 1 -
 493                 d % screen_desktop_layout.rows;
 494             *c = d / screen_desktop_layout.rows;
 495             break;
 496         case OB_CORNER_TOPRIGHT:
 497             *r = d % screen_desktop_layout.rows;
 498             *c = screen_desktop_layout.columns - 1 -
 499                 d / screen_desktop_layout.rows;
 500             break;
 501         case OB_CORNER_BOTTOMRIGHT:
 502             *r = screen_desktop_layout.rows - 1 -
 503                 d % screen_desktop_layout.rows;
 504             *c = screen_desktop_layout.columns - 1 -
 505                 d / screen_desktop_layout.rows;
 506             break;
 507         }
 508         break;
 509     }
 510 }
 511
 512 static guint translate_row_col(guint r, guint c)
 513 {
 514     switch (screen_desktop_layout.orientation) {
 515     case OB_ORIENTATION_HORZ:
 516         switch (screen_desktop_layout.start_corner) {
 517         case OB_CORNER_TOPLEFT:
 518             return r % screen_desktop_layout.rows *
 519                 screen_desktop_layout.columns +
 520                 c % screen_desktop_layout.columns;
 521         case OB_CORNER_BOTTOMLEFT:
 522             return (screen_desktop_layout.rows - 1 -
 523                     r % screen_desktop_layout.rows) *
 524                 screen_desktop_layout.columns +
 525                 c % screen_desktop_layout.columns;
 526         case OB_CORNER_TOPRIGHT:
 527             return r % screen_desktop_layout.rows *
 528                 screen_desktop_layout.columns +
 529                 (screen_desktop_layout.columns - 1 -
 530                  c % screen_desktop_layout.columns);
 531         case OB_CORNER_BOTTOMRIGHT:
 532             return (screen_desktop_layout.rows - 1 -
 533                     r % screen_desktop_layout.rows) *
 534                 screen_desktop_layout.columns +
 535                 (screen_desktop_layout.columns - 1 -
 536                  c % screen_desktop_layout.columns);
 537         }
 538     case OB_ORIENTATION_VERT:
 539         switch (screen_desktop_layout.start_corner) {
 540         case OB_CORNER_TOPLEFT:
 541             return c % screen_desktop_layout.columns *
 542                 screen_desktop_layout.rows +
 543                 r % screen_desktop_layout.rows;
 544         case OB_CORNER_BOTTOMLEFT:
 545             return c % screen_desktop_layout.columns *
 546                 screen_desktop_layout.rows +
 547                 (screen_desktop_layout.rows - 1 -
 548                  r % screen_desktop_layout.rows);
 549         case OB_CORNER_TOPRIGHT:
 550             return (screen_desktop_layout.columns - 1 -
 551                     c % screen_desktop_layout.columns) *
 552                 screen_desktop_layout.rows +
 553                 r % screen_desktop_layout.rows;
 554         case OB_CORNER_BOTTOMRIGHT:
 555             return (screen_desktop_layout.columns - 1 -
 556                     c % screen_desktop_layout.columns) *
 557                 screen_desktop_layout.rows +
 558                 (screen_desktop_layout.rows - 1 -
 559                  r % screen_desktop_layout.rows);
 560         }
 561     }
 562     g_assert_not_reached();
 563     return 0;
 564 }
 565
 566 static void popup_cycle(guint d, gboolean show)
 567 {
 568     Rect *a;
 569
 570     if (!show) {
 571         popup_hide(desktop_cycle_popup);
 572     } else {
 573         a = screen_physical_area_monitor(0);
 574         popup_position(desktop_cycle_popup, CenterGravity,
 575                        a->x + a->width / 2, a->y + a->height / 2);
 576         /* XXX the size and the font extents need to be related on some level
 577          */
 578         popup_size(desktop_cycle_popup, POPUP_WIDTH, POPUP_HEIGHT);
 579
 580         popup_set_text_align(desktop_cycle_popup, RR_JUSTIFY_CENTER);
 581
 582         popup_show(desktop_cycle_popup,
 583                    screen_desktop_names[d], NULL);
 584     }
 585 }
 586
 587 guint screen_cycle_desktop(ObDirection dir, gboolean wrap, gboolean linear,
 588                            gboolean done, gboolean cancel)
 589 {
 590     static gboolean first = TRUE;
 591     static gboolean lin;
 592     static guint origd, d;
 593     guint r, c;
 594
 595     if (cancel) {
 596         d = origd;
 597         goto done_cycle;
 598     } else if (done) {
 599         screen_set_desktop(d);
 600         goto done_cycle;
 601     }
 602     if (first) {
 603         first = FALSE;
 604         lin = linear;
 605         d = origd = screen_desktop;
 606     }
 607
 608     get_row_col(d, &r, &c);
 609
 610     if (lin) {
 611         switch (dir) {
 612         case OB_DIRECTION_EAST:
 613             if (d < screen_num_desktops - 1)
 614                 ++d;
 615             else if (wrap)
 616                 d = 0;
 617             break;
 618         case OB_DIRECTION_WEST:
 619             if (d > 0)
 620                 --d;
 621             else if (wrap)
 622                 d = screen_num_desktops - 1;
 623             break;
 624         default:
 625             assert(0);
 626             return screen_desktop;
 627         }
 628     } else {
 629         switch (dir) {
 630         case OB_DIRECTION_EAST:
 631             ++c;
 632             if (c >= screen_desktop_layout.columns) {
 633                 if (!wrap) return d = screen_desktop;
 634                 c = 0;
 635             }
 636             d = translate_row_col(r, c);
 637             if (d >= screen_num_desktops) {
 638                 if (!wrap) return d = screen_desktop;
 639                 ++c;
 640             }
 641             break;
 642         case OB_DIRECTION_WEST:
 643             --c;
 644             if (c >= screen_desktop_layout.columns) {
 645                 if (!wrap) return d = screen_desktop;
 646                 c = screen_desktop_layout.columns - 1;
 647             }
 648             d = translate_row_col(r, c);
 649             if (d >= screen_num_desktops) {
 650                 if (!wrap) return d = screen_desktop;
 651                 --c;
 652             }
 653             break;
 654         case OB_DIRECTION_SOUTH:
 655             ++r;
 656             if (r >= screen_desktop_layout.rows) {
 657                 if (!wrap) return d = screen_desktop;
 658                 r = 0;
 659             }
 660             d = translate_row_col(r, c);
 661             if (d >= screen_num_desktops) {
 662                 if (!wrap) return d = screen_desktop;
 663                 ++r;
 664             }
 665             break;
 666         case OB_DIRECTION_NORTH:
 667             --r;
 668             if (r >= screen_desktop_layout.rows) {
 669                 if (!wrap) return d = screen_desktop;
 670                 r = screen_desktop_layout.rows - 1;
 671             }
 672             d = translate_row_col(r, c);
 673             if (d >= screen_num_desktops) {
 674                 if (!wrap) return d = screen_desktop;
 675                 --r;
 676             }
 677             break;
 678         default:
 679             assert(0);
 680             return d = screen_desktop;
 681         }
 682
 683         d = translate_row_col(r, c);
 684     }
 685
 686     if (config_desktop_popup) {
 687         popup_cycle(d, TRUE);
 688         return d;
 689     }
 690
 691 done_cycle:
 692     first = TRUE;
 693
 694     popup_cycle(0, FALSE);
 695
 696     return d;
 697 }
 698
 699 void screen_update_layout()
 700 {
 701     ObOrientation orient;
 702     ObCorner corner;
 703     guint rows;
 704     guint cols;
 705     guint32 *data;
 706     guint num;
 707     gboolean valid = FALSE;
 708
 709     if (PROP_GETA32(RootWindow(ob_display, ob_screen),
 710                     net_desktop_layout, cardinal, &data, &num)) {
 711         if (num == 3 || num == 4) {
 712
 713             if (data[0] == prop_atoms.net_wm_orientation_vert)
 714                 orient = OB_ORIENTATION_VERT;
 715             else if (data[0] == prop_atoms.net_wm_orientation_horz)
 716                 orient = OB_ORIENTATION_HORZ;
 717             else
 718                 goto screen_update_layout_bail;
 719
 720             if (num < 4)
 721                 corner = OB_CORNER_TOPLEFT;
 722             else {
 723                 if (data[3] == prop_atoms.net_wm_topleft)
 724                     corner = OB_CORNER_TOPLEFT;
 725                 else if (data[3] == prop_atoms.net_wm_topright)
 726                     corner = OB_CORNER_TOPRIGHT;
 727                 else if (data[3] == prop_atoms.net_wm_bottomright)
 728                     corner = OB_CORNER_BOTTOMRIGHT;
 729                 else if (data[3] == prop_atoms.net_wm_bottomleft)
 730                     corner = OB_CORNER_BOTTOMLEFT;
 731                 else
 732                     goto screen_update_layout_bail;
 733             }
 734
 735             /* fill in a zero rows/columns */
 736             if ((data[1] == 0 && data[2] == 0) || /* both 0's is bad data.. */
 737                 (data[1] != 0 && data[2] != 0)) { /* no 0's is bad data.. */
 738                 goto screen_update_layout_bail;
 739             } else {
 740                 if (data[1] == 0) {
 741                     data[1] = (screen_num_desktops +
 742                                screen_num_desktops % data[2]) / data[2];
 743                 } else if (data[2] == 0) {
 744                     data[2] = (screen_num_desktops +
 745                                screen_num_desktops % data[1]) / data[1];
 746                 }
 747                 cols = data[1];
 748                 rows = data[2];
 749             }
 750
 751             /* bounds checking */
 752             if (orient == OB_ORIENTATION_HORZ) {
 753                 rows = MIN(rows, screen_num_desktops);
 754                 cols = MIN(cols, ((screen_num_desktops +
 755                                      (screen_num_desktops % rows)) / rows));
 756             } else {
 757                 cols = MIN(cols, screen_num_desktops);
 758                 rows = MIN(rows, ((screen_num_desktops +
 759                                      (screen_num_desktops % cols)) / cols));
 760             }
 761
 762             valid = TRUE;
 763         }
 764     screen_update_layout_bail:
 765         g_free(data);
 766     }
 767
 768     if (!valid) {
 769         /* defaults */
 770         orient = OB_ORIENTATION_HORZ;
 771         corner = OB_CORNER_TOPLEFT;
 772         rows = 1;
 773         cols = screen_num_desktops;
 774     }
 775
 776     screen_desktop_layout.orientation = orient;
 777     screen_desktop_layout.start_corner = corner;
 778     screen_desktop_layout.rows = rows;
 779     screen_desktop_layout.columns = cols;
 780 }
 781
 782 void screen_update_desktop_names()
 783 {
 784     guint i;
 785
 786     /* empty the array */
 787     g_strfreev(screen_desktop_names);
 788     screen_desktop_names = NULL;
 789
 790     if (PROP_GETSS(RootWindow(ob_display, ob_screen),
 791                    net_desktop_names, utf8, &screen_desktop_names))
 792         for (i = 0; screen_desktop_names[i] && i <= screen_num_desktops; ++i);
 793     else
 794         i = 0;
 795     if (i <= screen_num_desktops) {
 796         screen_desktop_names = g_renew(char*, screen_desktop_names,
 797                                        screen_num_desktops + 1);
 798         screen_desktop_names[screen_num_desktops] = NULL;
 799         for (; i < screen_num_desktops; ++i)
 800             screen_desktop_names[i] = g_strdup("Unnamed Desktop");
 801     }
 802 }
 803
 804 void screen_show_desktop(gboolean show)
 805 {
 806     GList *it;
 807
 808     if (show == screen_showing_desktop) return; /* no change */
 809
 810     screen_showing_desktop = show;
 811
 812     if (show) {
 813         /* bottom to top */
 814         for (it = g_list_last(stacking_list); it != NULL; it = it->prev) {
 815             if (WINDOW_IS_CLIENT(it->data)) {
 816                 ObClient *client = it->data;
 817                 if (client->frame->visible && !client_should_show(client))
 818                     frame_hide(client->frame);
 819             }
 820         }
 821     } else {
 822         /* top to bottom */
 823         for (it = stacking_list; it != NULL; it = it->next) {
 824             if (WINDOW_IS_CLIENT(it->data)) {
 825                 ObClient *client = it->data;
 826                 if (!client->frame->visible && client_should_show(client))
 827                     frame_show(client->frame);
 828             }
 829         }
 830     }
 831
 832     if (show) {
 833         /* focus desktop */
 834         for (it = focus_order[screen_desktop]; it; it = it->next)
 835             if (((ObClient*)it->data)->type == OB_CLIENT_TYPE_DESKTOP &&
 836                 client_focus(it->data))
 837                 break;
 838     } else {
 839         focus_fallback(OB_FOCUS_FALLBACK_NOFOCUS);
 840     }
 841
 842     show = !!show; /* make it boolean */
 843     PROP_SET32(RootWindow(ob_display, ob_screen),
 844                net_showing_desktop, cardinal, show);
 845 }
 846
 847 void screen_install_colormap(ObClient *client, gboolean install)
 848 {
 849     XWindowAttributes wa;
 850
 851     if (client == NULL) {
 852         if (install)
 853             XInstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 854         else
 855             XUninstallColormap(RrDisplay(ob_rr_inst), RrColormap(ob_rr_inst));
 856     } else {
 857         if (XGetWindowAttributes(ob_display, client->window, &wa) &&
 858             wa.colormap != None) {
 859             xerror_set_ignore(TRUE);
 860             if (install)
 861                 XInstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 862             else
 863                 XUninstallColormap(RrDisplay(ob_rr_inst), wa.colormap);
 864             xerror_set_ignore(FALSE);
 865         }
 866     }
 867 }
 868
 869 void screen_update_areas()
 870 {
 871     guint i, x;
 872     guint32 *dims;
 873     GList *it;
 874
 875     g_free(monitor_area);
 876     extensions_xinerama_screens(&monitor_area, &screen_num_monitors);
 877
 878     if (area) {
 879         for (i = 0; area[i]; ++i)
 880             g_free(area[i]);
 881         g_free(area);
 882     }
 883
 884     area = g_new(Rect*, screen_num_desktops + 2);
 885     for (i = 0; i < screen_num_desktops + 1; ++i)
 886         area[i] = g_new(Rect, screen_num_monitors + 1);
 887     area[i] = NULL;
 888
 889     dims = g_new(guint32, 4 * screen_num_desktops);
 890
 891     for (i = 0; i < screen_num_desktops + 1; ++i) {
 892         Strut s;
 893         int l, r, t, b;
 894
 895         /* calc the xinerama areas */
 896         for (x = 0; x < screen_num_monitors; ++x) {
 897             area[i][x] = monitor_area[x];
 898             if (x == 0) {
 899                 l = monitor_area[x].x;
 900                 t = monitor_area[x].y;
 901                 r = monitor_area[x].x + monitor_area[x].width - 1;
 902                 b = monitor_area[x].y + monitor_area[x].height - 1;
 903             } else {
 904                 l = MIN(l, monitor_area[x].x);
 905                 t = MIN(t, monitor_area[x].y);
 906                 r = MAX(r, monitor_area[x].x + monitor_area[x].width - 1);
 907                 b = MAX(b, monitor_area[x].y + monitor_area[x].height - 1);
 908             }
 909         }
 910         RECT_SET(area[i][x], l, t, r - l + 1, b - t + 1);
 911
 912         /* apply struts */
 913         STRUT_SET(s, 0, 0, 0, 0);
 914         for (it = client_list; it; it = it->next)
 915             STRUT_ADD(s, ((ObClient*)it->data)->strut);
 916         STRUT_ADD(s, dock_strut);
 917
 918         if (s.left) {
 919             int o;
 920
 921             /* find the left-most xin heads, i do this in 2 loops :| */
 922             o = area[i][0].x;
 923             for (x = 1; x < screen_num_monitors; ++x)
 924                 o = MIN(o, area[i][x].x);
 925
 926             for (x = 0; x < screen_num_monitors; ++x) {
 927                 int edge = o + s.left - area[i][x].x;
 928                 if (edge > 0) {
 929                     area[i][x].x += edge;
 930                     area[i][x].width -= edge;
 931                 }
 932             }
 933
 934             area[i][screen_num_monitors].x += s.left;
 935             area[i][screen_num_monitors].width -= s.left;
 936         }
 937         if (s.top) {
 938             int o;
 939
 940             /* find the left-most xin heads, i do this in 2 loops :| */
 941             o = area[i][0].y;
 942             for (x = 1; x < screen_num_monitors; ++x)
 943                 o = MIN(o, area[i][x].y);
 944
 945             for (x = 0; x < screen_num_monitors; ++x) {
 946                 int edge = o + s.top - area[i][x].y;
 947                 if (edge > 0) {
 948                     area[i][x].y += edge;
 949                     area[i][x].height -= edge;
 950                 }
 951             }
 952
 953             area[i][screen_num_monitors].y += s.top;
 954             area[i][screen_num_monitors].height -= s.top;
 955         }
 956         if (s.right) {
 957             int o;
 958
 959             /* find the bottom-most xin heads, i do this in 2 loops :| */
 960             o = area[i][0].x + area[i][0].width - 1;
 961             for (x = 1; x < screen_num_monitors; ++x)
 962                 o = MAX(o, area[i][x].x + area[i][x].width - 1);
 963
 964             for (x = 0; x < screen_num_monitors; ++x) {
 965                 int edge = (area[i][x].x + area[i][x].width - 1) -
 966                     (o - s.right);
 967                 if (edge > 0)
 968                     area[i][x].width -= edge;
 969             }
 970
 971             area[i][screen_num_monitors].width -= s.right;
 972         }
 973         if (s.bottom) {
 974             int o;
 975
 976             /* find the bottom-most xin heads, i do this in 2 loops :| */
 977             o = area[i][0].y + area[i][0].height - 1;
 978             for (x = 1; x < screen_num_monitors; ++x)
 979                 o = MAX(o, area[i][x].y + area[i][x].height - 1);
 980
 981             for (x = 0; x < screen_num_monitors; ++x) {
 982                 int edge = (area[i][x].y + area[i][x].height - 1) -
 983                     (o - s.bottom);
 984                 if (edge > 0)
 985                     area[i][x].height -= edge;
 986             }
 987
 988             area[i][screen_num_monitors].height -= s.bottom;
 989         }
 990
 991         /* XXX when dealing with partial struts, if its in a single
 992            xinerama area, then only subtract it from that area's space
 993         for (x = 0; x < screen_num_monitors; ++x) {
 994             GList *it;
 995
 996
 997                do something smart with it for the 'all xinerama areas' one...
 998
 999             for (it = client_list; it; it = it->next) {
1000
1001                 XXX if gunna test this shit, then gotta worry about when
1002                 the client moves between xinerama heads..
1003
1004                 if (RECT_CONTAINS_RECT(((ObClient*)it->data)->frame->area,
1005                                        area[i][x])) {
1006
1007                 }
1008             }
1009         }
1010         */
1011
1012         /* XXX optimize when this is run? */
1013
1014         /* the area has changed, adjust all the maximized
1015            windows */
1016         for (it = client_list; it; it = it->next) {
1017             ObClient *c = it->data;
1018             if (i < screen_num_desktops) {
1019                 if (c->desktop == i)
1020                     client_reconfigure(c);
1021             } else if (c->desktop == DESKTOP_ALL)
1022                 client_reconfigure(c);
1023         }
1024         if (i < screen_num_desktops) {
1025             /* don't set these for the 'all desktops' area */
1026             dims[(i * 4) + 0] = area[i][screen_num_monitors].x;
1027             dims[(i * 4) + 1] = area[i][screen_num_monitors].y;
1028             dims[(i * 4) + 2] = area[i][screen_num_monitors].width;
1029             dims[(i * 4) + 3] = area[i][screen_num_monitors].height;
1030         }
1031     }
1032     PROP_SETA32(RootWindow(ob_display, ob_screen), net_workarea, cardinal,
1033                 dims, 4 * screen_num_desktops);
1034
1035     g_free(dims);
1036 }
1037
1038 Rect *screen_area(guint desktop)
1039 {
1040     return screen_area_monitor(desktop, screen_num_monitors);
1041 }
1042
1043 Rect *screen_area_monitor(guint desktop, guint head)
1044 {
1045     if (head > screen_num_monitors)
1046         return NULL;
1047     if (desktop >= screen_num_desktops) {
1048         if (desktop == DESKTOP_ALL)
1049             return &area[screen_num_desktops][head];
1050         return NULL;
1051     }
1052     return &area[desktop][head];
1053 }
1054
1055 Rect *screen_physical_area()
1056 {
1057     return screen_physical_area_monitor(screen_num_monitors);
1058 }
1059
1060 Rect *screen_physical_area_monitor(guint head)
1061 {
1062     if (head > screen_num_monitors)
1063         return NULL;
1064     return &monitor_area[head];
1065 }
1066
1067 static void set_root_cursor()
1068 {
1069 #ifdef USE_LIBSN
1070         if (sn_busy_cnt)
1071             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1072                           ob_cursor(OB_CURSOR_BUSY));
1073         else
1074 #endif
1075             XDefineCursor(ob_display, RootWindow(ob_display, ob_screen),
1076                           ob_cursor(OB_CURSOR_POINTER));
1077 }
1078
1079 #ifdef USE_LIBSN
1080 static void sn_timeout(ObTimer *t, void *data)
1081 {
1082     timer_stop(sn_timer);
1083     sn_timer = NULL;
1084     sn_busy_cnt = 0;
1085
1086     set_root_cursor();
1087 }
1088
1089 static void sn_event_func(SnMonitorEvent *ev, void *data)
1090 {
1091     SnStartupSequence *seq;
1092     const char *seq_id, *bin_name;
1093     int cnt = sn_busy_cnt;
1094
1095     if (!(seq = sn_monitor_event_get_startup_sequence(ev)))
1096         return;
1097
1098     seq_id = sn_startup_sequence_get_id(seq);
1099     bin_name = sn_startup_sequence_get_binary_name(seq);
1100
1101     if (!(seq_id && bin_name))
1102         return;
1103
1104     switch (sn_monitor_event_get_type(ev)) {
1105     case SN_MONITOR_EVENT_INITIATED:
1106         ++sn_busy_cnt;
1107         if (sn_timer)
1108             timer_stop(sn_timer);
1109         /* 30 second timeout for apps to start */
1110         sn_timer = timer_start(30 * 1000000, sn_timeout, NULL);
1111         break;
1112     case SN_MONITOR_EVENT_CHANGED:
1113         break;
1114     case SN_MONITOR_EVENT_COMPLETED:
1115         if (sn_busy_cnt) --sn_busy_cnt;
1116         if (sn_timer) {
1117             timer_stop(sn_timer);
1118             sn_timer = NULL;
1119         }
1120         break;
1121     case SN_MONITOR_EVENT_CANCELED:
1122         if (sn_busy_cnt) --sn_busy_cnt;
1123         if (sn_timer) {
1124             timer_stop(sn_timer);
1125             sn_timer = NULL;
1126         }
1127     };
1128
1129     if (sn_busy_cnt != cnt)
1130         set_root_cursor();
1131 }
1132 #endif
1133
1134 gboolean screen_pointer_pos(int *x, int *y)
1135 {
1136     Window w;
1137     int i;
1138     guint u;
1139
1140     return !!XQueryPointer(ob_display, RootWindow(ob_display, ob_screen),
1141                            &w, &w, x, y, &i, &i, &u);
1142 }