openbox/screen.c

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