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