screen.c 63.8 KB
Newer Older
rhp's avatar
...  
rhp committed
1 2 3
/* Metacity X screen handler */

/* 
Havoc Pennington's avatar
Havoc Pennington committed
4
 * Copyright (C) 2001, 2002 Havoc Pennington
5
 * Copyright (C) 2002, 2003 Red Hat Inc.
Havoc Pennington's avatar
Havoc Pennington committed
6
 * Some ICCCM manager selection code derived from fvwm2,
7
 * Copyright (C) 2001 Dominik Vogt, Matthias Clasen, and fvwm2 team
rhp's avatar
...  
rhp committed
8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23
 * 
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.
 */
rhp's avatar
...  
rhp committed
24

25
#include <config.h>
rhp's avatar
...  
rhp committed
26 27
#include "screen.h"
#include "util.h"
rhp's avatar
...  
rhp committed
28
#include "errors.h"
rhp's avatar
...  
rhp committed
29
#include "window.h"
rhp's avatar
...  
rhp committed
30
#include "frame.h"
31
#include "prefs.h"
rhp's avatar
...  
rhp committed
32 33
#include "workspace.h"
#include "keybindings.h"
rhp's avatar
...  
rhp committed
34
#include "stack.h"
35
#include "xprops.h"
rhp's avatar
...  
rhp committed
36

37 38 39 40
#ifdef HAVE_SOLARIS_XINERAMA
#include <X11/extensions/xinerama.h>
#endif
#ifdef HAVE_XFREE_XINERAMA
41 42 43
#include <X11/extensions/Xinerama.h>
#endif

rhp's avatar
...  
rhp committed
44
#include <X11/Xatom.h>
rhp's avatar
...  
rhp committed
45 46
#include <locale.h>
#include <string.h>
Havoc Pennington's avatar
Havoc Pennington committed
47
#include <stdio.h>
rhp's avatar
...  
rhp committed
48

rhp's avatar
...  
rhp committed
49 50 51
static char* get_screen_name (MetaDisplay *display,
                              int          number);

52
static void update_num_workspaces  (MetaScreen *screen);
53
static void update_focus_mode      (MetaScreen *screen);
54
static void update_workspace_names (MetaScreen *screen);
55 56
static void prefs_changed_callback (MetaPreference pref,
                                    gpointer       data);
rhp's avatar
...  
rhp committed
57

58 59 60 61 62
#ifdef HAVE_STARTUP_NOTIFICATION
static void meta_screen_sn_event   (SnMonitorEvent *event,
                                    void           *user_data);
#endif

rhp's avatar
...  
rhp committed
63 64 65 66 67
static int
set_wm_check_hint (MetaScreen *screen)
{
  unsigned long data[1];

rhp's avatar
...  
rhp committed
68 69
  g_return_val_if_fail (screen->display->leader_window != None, 0);
  
rhp's avatar
...  
rhp committed
70 71 72 73 74 75
  data[0] = screen->display->leader_window;

  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_net_supporting_wm_check,
                   XA_WINDOW,
                   32, PropModeReplace, (guchar*) data, 1);
rhp's avatar
...  
rhp committed
76

77 78 79 80 81 82 83 84 85 86
  /* Legacy GNOME hint (uses cardinal, dunno why) */

  /* do this after setting up window fully, to avoid races
   * with clients listening to property notify on root.
   */
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_win_supporting_wm_check,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) data, 1);
  
rhp's avatar
...  
rhp committed
87 88 89 90 91 92
  return Success;
}

static int
set_supported_hint (MetaScreen *screen)
{
Havoc Pennington's avatar
Havoc Pennington committed
93
#define N_SUPPORTED 45
rhp's avatar
...  
rhp committed
94
#define N_WIN_SUPPORTED 1
rhp's avatar
...  
rhp committed
95
  Atom atoms[N_SUPPORTED];
rhp's avatar
...  
rhp committed
96
  
rhp's avatar
...  
rhp committed
97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113
  atoms[0] = screen->display->atom_net_wm_name;
  atoms[1] = screen->display->atom_net_close_window;
  atoms[2] = screen->display->atom_net_wm_state;
  atoms[3] = screen->display->atom_net_wm_state_shaded;
  atoms[4] = screen->display->atom_net_wm_state_maximized_vert;
  atoms[5] = screen->display->atom_net_wm_state_maximized_horz;
  atoms[6] = screen->display->atom_net_wm_desktop;
  atoms[7] = screen->display->atom_net_number_of_desktops;
  atoms[8] = screen->display->atom_net_current_desktop;
  atoms[9] = screen->display->atom_net_wm_window_type;
  atoms[10] = screen->display->atom_net_wm_window_type_desktop;
  atoms[11] = screen->display->atom_net_wm_window_type_dock;
  atoms[12] = screen->display->atom_net_wm_window_type_toolbar;
  atoms[13] = screen->display->atom_net_wm_window_type_menu;
  atoms[14] = screen->display->atom_net_wm_window_type_dialog;
  atoms[15] = screen->display->atom_net_wm_window_type_normal;
  atoms[16] = screen->display->atom_net_wm_state_modal;
rhp's avatar
...  
rhp committed
114 115
  atoms[17] = screen->display->atom_net_client_list;
  atoms[18] = screen->display->atom_net_client_list_stacking;
rhp's avatar
...  
rhp committed
116 117
  atoms[19] = screen->display->atom_net_wm_state_skip_taskbar;
  atoms[20] = screen->display->atom_net_wm_state_skip_pager;
Havoc Pennington's avatar
Havoc Pennington committed
118
  atoms[21] = screen->display->atom_net_wm_icon;
119
  atoms[22] = screen->display->atom_net_wm_moveresize;
120
  atoms[23] = screen->display->atom_net_wm_state_hidden;
121
  atoms[24] = screen->display->atom_net_wm_window_type_utility;
Havoc Pennington's avatar
Havoc Pennington committed
122
  atoms[25] = screen->display->atom_net_wm_window_type_splash;
123
  atoms[26] = screen->display->atom_net_wm_state_fullscreen;
124
  atoms[27] = screen->display->atom_net_wm_ping;
125
  atoms[28] = screen->display->atom_net_active_window;
126
  atoms[29] = screen->display->atom_net_workarea;
127
  atoms[30] = screen->display->atom_net_showing_desktop;
128
  atoms[31] = screen->display->atom_net_desktop_layout;
Havoc Pennington's avatar
Havoc Pennington committed
129
  atoms[32] = screen->display->atom_net_desktop_names;
130 131 132 133 134 135 136 137 138
  atoms[33] = screen->display->atom_net_wm_allowed_actions;
  atoms[34] = screen->display->atom_net_wm_action_move;
  atoms[35] = screen->display->atom_net_wm_action_resize;
  atoms[36] = screen->display->atom_net_wm_action_shade;
  atoms[37] = screen->display->atom_net_wm_action_stick;
  atoms[38] = screen->display->atom_net_wm_action_maximize_horz;
  atoms[39] = screen->display->atom_net_wm_action_maximize_vert;
  atoms[40] = screen->display->atom_net_wm_action_change_desktop;
  atoms[41] = screen->display->atom_net_wm_action_close;
Havoc Pennington's avatar
Havoc Pennington committed
139 140
  atoms[42] = screen->display->atom_net_wm_state_above;
  atoms[43] = screen->display->atom_net_wm_state_below;
Havoc Pennington's avatar
Havoc Pennington committed
141
  atoms[44] = screen->display->atom_net_startup_id;
rhp's avatar
...  
rhp committed
142 143
  
  XChangeProperty (screen->display->xdisplay, screen->xroot,
144
                   screen->display->atom_net_supported,
rhp's avatar
...  
rhp committed
145 146 147
                   XA_ATOM,
                   32, PropModeReplace, (guchar*) atoms, N_SUPPORTED);

rhp's avatar
...  
rhp committed
148 149 150 151 152 153 154 155
  /* Set legacy GNOME hints */
  atoms[0] = screen->display->atom_win_layer;
  
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_win_protocols,
                   XA_ATOM,
                   32, PropModeReplace, (guchar*) atoms, N_WIN_SUPPORTED);
  
rhp's avatar
...  
rhp committed
156 157 158 159
  return Success;
#undef N_SUPPORTED
}

Havoc Pennington's avatar
Havoc Pennington committed
160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182
static int
set_wm_icon_size_hint (MetaScreen *screen)
{
#define N_VALS 6
  gulong vals[N_VALS];

  /* min width, min height, max w, max h, width inc, height inc */
  vals[0] = META_ICON_WIDTH;
  vals[1] = META_ICON_HEIGHT;
  vals[2] = META_ICON_WIDTH;
  vals[3] = META_ICON_HEIGHT;
  vals[4] = 0;
  vals[5] = 0;
  
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_wm_icon_size,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) vals, N_VALS);
  
  return Success;
#undef N_VALS
}

183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264
static void
reload_xinerama_infos (MetaScreen *screen)
{
  MetaDisplay *display;

  display = screen->display;
  
  if (screen->xinerama_infos)
    g_free (screen->xinerama_infos);
  
  screen->xinerama_infos = NULL;
  screen->n_xinerama_infos = 0;
  screen->last_xinerama_index = 0;

  screen->display->xinerama_cache_invalidated = TRUE;
  
#ifdef HAVE_XFREE_XINERAMA
  if (XineramaIsActive (display->xdisplay))
    {
      XineramaScreenInfo *infos;
      int n_infos;
      int i;
      
      n_infos = 0;
      infos = XineramaQueryScreens (display->xdisplay, &n_infos);

      meta_topic (META_DEBUG_XINERAMA,
                  "Found %d Xinerama screens on display %s\n",
                  n_infos, display->name);

      if (n_infos > 0)
        {
          screen->xinerama_infos = g_new (MetaXineramaScreenInfo, n_infos);
          screen->n_xinerama_infos = n_infos;
          
          i = 0;
          while (i < n_infos)
            {
              screen->xinerama_infos[i].number = infos[i].screen_number;
              screen->xinerama_infos[i].x_origin = infos[i].x_org;
              screen->xinerama_infos[i].y_origin = infos[i].y_org;
              screen->xinerama_infos[i].width = infos[i].width;
              screen->xinerama_infos[i].height = infos[i].height;

              meta_topic (META_DEBUG_XINERAMA,
                          "Xinerama %d is %d,%d %d x %d\n",
                          screen->xinerama_infos[i].number,
                          screen->xinerama_infos[i].x_origin,
                          screen->xinerama_infos[i].y_origin,
                          screen->xinerama_infos[i].width,
                          screen->xinerama_infos[i].height);              
              
              ++i;
            }
        }
      
      meta_XFree (infos);
    }
  else
    {
      meta_topic (META_DEBUG_XINERAMA,
                  "No XFree86 Xinerama extension or XFree86 Xinerama inactive on display %s\n",
                  display->name);
    }
#else
  meta_topic (META_DEBUG_XINERAMA,
              "Metacity compiled without XFree86 Xinerama support\n");
#endif /* HAVE_XFREE_XINERAMA */

#ifdef HAVE_SOLARIS_XINERAMA
  /* This code from GDK, Copyright (C) 2002 Sun Microsystems */
  if (screen->n_xinerama_infos == 0 &&
      XineramaGetState (screen->display->xdisplay,
                        screen->number))
    {
      XRectangle monitors[MAXFRAMEBUFFERS];
      unsigned char hints[16];
      int result;
      int n_monitors;
      int i;

      n_monitors = 0;
265
      result = XineramaGetInfo (screen->display->xdisplay,
266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356
                                screen->number,
				monitors, hints,
                                &n_monitors);
      /* Yes I know it should be Success but the current implementation 
       * returns the num of monitor
       */
      if (result > 0)
	{
          g_assert (n_monitors > 0);
          
          screen->xinerama_infos = g_new (MetaXineramaScreenInfo, n_monitors);
          screen->n_xinerama_infos = n_monitors;
          
          i = 0;
          while (i < n_monitors)
            {
              screen->xinerama_infos[i].number = i;
              screen->xinerama_infos[i].x_origin = monitors[i].x;
	      screen->xinerama_infos[i].y_origin = monitors[i].y;
	      screen->xinerama_infos[i].width = monitors[i].width;
	      screen->xinerama_infos[i].height = monitors[i].height;

              meta_topic (META_DEBUG_XINERAMA,
                          "Xinerama %d is %d,%d %d x %d\n",
                          screen->xinerama_infos[i].number,
                          screen->xinerama_infos[i].x_origin,
                          screen->xinerama_infos[i].y_origin,
                          screen->xinerama_infos[i].width,
                          screen->xinerama_infos[i].height);              
              
              ++i;
            }
	}
    }
  else if (screen->n_xinerama_infos == 0)
    {
      meta_topic (META_DEBUG_XINERAMA,
                  "No Solaris Xinerama extension or Solaris Xinerama inactive on display %s\n",
                  display->name);
    }
#else
  meta_topic (META_DEBUG_XINERAMA,
              "Metacity compiled without Solaris Xinerama support\n");
#endif /* HAVE_SOLARIS_XINERAMA */

  
  /* If no Xinerama, fill in the single screen info so
   * we can use the field unconditionally
   */
  if (screen->n_xinerama_infos == 0)
    {
      if (g_getenv ("METACITY_DEBUG_XINERAMA"))
        {
          meta_topic (META_DEBUG_XINERAMA,
                      "Pretending a single monitor has two Xinerama screens\n");
          
          screen->xinerama_infos = g_new (MetaXineramaScreenInfo, 2);
          screen->n_xinerama_infos = 2;
          
          screen->xinerama_infos[0].number = 0;
          screen->xinerama_infos[0].x_origin = 0;
          screen->xinerama_infos[0].y_origin = 0;
          screen->xinerama_infos[0].width = screen->width / 2;
          screen->xinerama_infos[0].height = screen->height;

          screen->xinerama_infos[1].number = 1;
          screen->xinerama_infos[1].x_origin = screen->width / 2;
          screen->xinerama_infos[1].y_origin = 0;
          screen->xinerama_infos[1].width = screen->width / 2 + screen->width % 2;
          screen->xinerama_infos[1].height = screen->height;
        }
      else
        {
          meta_topic (META_DEBUG_XINERAMA,
                      "No Xinerama screens, using default screen info\n");
          
          screen->xinerama_infos = g_new (MetaXineramaScreenInfo, 1);
          screen->n_xinerama_infos = 1;
          
          screen->xinerama_infos[0].number = 0;
          screen->xinerama_infos[0].x_origin = 0;
          screen->xinerama_infos[0].y_origin = 0;
          screen->xinerama_infos[0].width = screen->width;
          screen->xinerama_infos[0].height = screen->height;
        }
    }

  g_assert (screen->n_xinerama_infos > 0);
  g_assert (screen->xinerama_infos != NULL);
}

rhp's avatar
...  
rhp committed
357 358 359 360 361
MetaScreen*
meta_screen_new (MetaDisplay *display,
                 int          number)
{
  MetaScreen *screen;
rhp's avatar
...  
rhp committed
362 363
  Window xroot;
  Display *xdisplay;
364
  XWindowAttributes attr;
Havoc Pennington's avatar
Havoc Pennington committed
365 366 367 368 369 370
  Window new_wm_sn_owner;
  Window current_wm_sn_owner;
  gboolean replace_current_wm;
  Atom wm_sn_atom;
  char buf[128];
  Time manager_timestamp;
Havoc Pennington's avatar
Havoc Pennington committed
371
  gulong current_workspace;
Havoc Pennington's avatar
Havoc Pennington committed
372 373
  
  replace_current_wm = meta_get_replace_current_wm ();
rhp's avatar
...  
rhp committed
374
  
rhp's avatar
...  
rhp committed
375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396
  /* Only display->name, display->xdisplay, and display->error_traps
   * can really be used in this function, since normally screens are
   * created from the MetaDisplay constructor
   */
  
  xdisplay = display->xdisplay;
  
  meta_verbose ("Trying screen %d on display '%s'\n",
                number, display->name);

  xroot = RootWindow (xdisplay, number);

  /* FVWM checks for None here, I don't know if this
   * ever actually happens
   */
  if (xroot == None)
    {
      meta_warning (_("Screen %d on display '%s' is invalid\n"),
                    number, display->name);
      return NULL;
    }

Havoc Pennington's avatar
Havoc Pennington committed
397 398 399 400 401 402 403 404 405 406 407
  sprintf (buf, "WM_S%d", number);
  wm_sn_atom = XInternAtom (xdisplay, buf, False);  
  
  current_wm_sn_owner = XGetSelectionOwner (xdisplay, wm_sn_atom);

  if (current_wm_sn_owner != None)
    {
      XSetWindowAttributes attrs;
      
      if (!replace_current_wm)
        {
408
          meta_warning (_("Screen %d on display \"%s\" already has a window manager; try using the --replace option to replace the current window manager.\n"),
Havoc Pennington's avatar
Havoc Pennington committed
409 410 411 412 413 414
                        number, display->name);

          return NULL;
        }

      /* We want to find out when the current selection owner dies */
415
      meta_error_trap_push_with_return (display);
Havoc Pennington's avatar
Havoc Pennington committed
416 417 418
      attrs.event_mask = StructureNotifyMask;
      XChangeWindowAttributes (xdisplay,
                               current_wm_sn_owner, CWEventMask, &attrs);
419
      if (meta_error_trap_pop_with_return (display, FALSE) != Success)
Havoc Pennington's avatar
Havoc Pennington committed
420 421 422
        current_wm_sn_owner = None; /* don't wait for it to die later on */
    }

423
  new_wm_sn_owner = meta_create_offscreen_window (xdisplay, xroot);
Havoc Pennington's avatar
Havoc Pennington committed
424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487

  {
    /* Generate a timestamp */
    XSetWindowAttributes attrs;
    XEvent event;

    attrs.event_mask = PropertyChangeMask;
    XChangeWindowAttributes (xdisplay, new_wm_sn_owner, CWEventMask, &attrs);
    
    XChangeProperty (xdisplay,
                     new_wm_sn_owner, XA_WM_CLASS, XA_STRING, 8,
                     PropModeAppend, NULL, 0);
    XWindowEvent (xdisplay, new_wm_sn_owner, PropertyChangeMask, &event);
    attrs.event_mask = NoEventMask;
    XChangeWindowAttributes (display->xdisplay,
                             new_wm_sn_owner, CWEventMask, &attrs);

    manager_timestamp = event.xproperty.time;
  }
  
  XSetSelectionOwner (xdisplay, wm_sn_atom, new_wm_sn_owner,
                      manager_timestamp);

  if (XGetSelectionOwner (xdisplay, wm_sn_atom) != new_wm_sn_owner)
    {
      meta_warning (_("Could not acquire window manager selection on screen %d display \"%s\"\n"),
                    number, display->name);

      XDestroyWindow (xdisplay, new_wm_sn_owner);
      
      return NULL;
    }
  
  {
    /* Send client message indicating that we are now the WM */
    XClientMessageEvent ev;
    
    ev.type = ClientMessage;
    ev.window = xroot;
    ev.message_type = display->atom_manager;
    ev.format = 32;
    ev.data.l[0] = manager_timestamp;
    ev.data.l[1] = wm_sn_atom;

    XSendEvent (xdisplay, xroot, False, StructureNotifyMask, (XEvent*)&ev);
  }

  /* Wait for old window manager to go away */
  if (current_wm_sn_owner != None)
    {
      XEvent event;

      /* We sort of block infinitely here which is probably lame. */
      
      meta_verbose ("Waiting for old window manager to exit\n");
      do
        {
          XWindowEvent (xdisplay, current_wm_sn_owner,
                        StructureNotifyMask, &event);
        }
      while (event.type != DestroyNotify);
    }
  
  /* select our root window events */
488
  meta_error_trap_push_with_return (display);
489 490 491 492 493

  /* We need to or with the existing event mask since
   * gtk+ may be interested in other events.
   */
  XGetWindowAttributes (xdisplay, xroot, &attr);
rhp's avatar
...  
rhp committed
494 495 496 497 498
  XSelectInput (xdisplay,
                xroot,
                SubstructureRedirectMask | SubstructureNotifyMask |
                ColormapChangeMask | PropertyChangeMask |
                LeaveWindowMask | EnterWindowMask |
499
                ButtonPressMask | ButtonReleaseMask |
500
                KeyPressMask | KeyReleaseMask |
501 502
                FocusChangeMask | StructureNotifyMask |
		attr.your_event_mask);
503
  if (meta_error_trap_pop_with_return (display, FALSE) != Success)
rhp's avatar
...  
rhp committed
504
    {
Havoc Pennington's avatar
Havoc Pennington committed
505
      meta_warning (_("Screen %d on display \"%s\" already has a window manager\n"),
rhp's avatar
...  
rhp committed
506
                    number, display->name);
Havoc Pennington's avatar
Havoc Pennington committed
507 508 509

      XDestroyWindow (xdisplay, new_wm_sn_owner);
      
rhp's avatar
...  
rhp committed
510 511
      return NULL;
    }
rhp's avatar
...  
rhp committed
512 513
  
  screen = g_new (MetaScreen, 1);
514
  screen->closing = 0;
Havoc Pennington's avatar
Havoc Pennington committed
515
  
rhp's avatar
...  
rhp committed
516
  screen->display = display;
rhp's avatar
...  
rhp committed
517
  screen->number = number;
rhp's avatar
...  
rhp committed
518
  screen->screen_name = get_screen_name (display, number);
rhp's avatar
...  
rhp committed
519
  screen->xscreen = ScreenOfDisplay (xdisplay, number);
rhp's avatar
...  
rhp committed
520
  screen->xroot = xroot;
rhp's avatar
...  
rhp committed
521 522
  screen->width = WidthOfScreen (screen->xscreen);
  screen->height = HeightOfScreen (screen->xscreen);
rhp's avatar
...  
rhp committed
523
  screen->current_cursor = -1; /* invalid/unset */
Havoc Pennington's avatar
Havoc Pennington committed
524 525
  screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen);
  screen->default_depth = DefaultDepthOfScreen (screen->xscreen);
526
  screen->flash_window = None;
527

Havoc Pennington's avatar
Havoc Pennington committed
528 529 530 531
  screen->wm_sn_selection_window = new_wm_sn_owner;
  screen->wm_sn_atom = wm_sn_atom;
  screen->wm_sn_timestamp = manager_timestamp;
  
532
  screen->work_area_idle = 0;
533

534
  screen->active_workspace = NULL;
535
  screen->workspaces = NULL;
536 537 538
  screen->rows_of_workspaces = 1;
  screen->columns_of_workspaces = -1;
  screen->vertical_workspaces = FALSE;
539
  screen->starting_corner = META_SCREEN_TOPLEFT;
540

541 542
  screen->showing_desktop = FALSE;
  
543 544
  screen->xinerama_infos = NULL;
  screen->n_xinerama_infos = 0;
Havoc Pennington's avatar
Havoc Pennington committed
545
  screen->last_xinerama_index = 0;
546
  
547
  reload_xinerama_infos (screen);
rhp's avatar
...  
rhp committed
548 549
  
  meta_screen_set_cursor (screen, META_CURSOR_DEFAULT);
rhp's avatar
...  
rhp committed
550
  
rhp's avatar
...  
rhp committed
551
  if (display->leader_window == None)
552 553 554
    display->leader_window = meta_create_offscreen_window (display->xdisplay,
                                                           screen->xroot);
  
555 556
  if (display->no_focus_window == None)
    {
557 558 559
      display->no_focus_window = meta_create_offscreen_window (display->xdisplay,
                                                               screen->xroot);

560
      XSelectInput (display->xdisplay, display->no_focus_window,
561
                    FocusChangeMask | KeyPressMask | KeyReleaseMask);
562 563 564
      XMapWindow (display->xdisplay, display->no_focus_window);
    }
  
Havoc Pennington's avatar
Havoc Pennington committed
565
  set_wm_icon_size_hint (screen);
rhp's avatar
...  
rhp committed
566
  
rhp's avatar
...  
rhp committed
567 568 569
  set_supported_hint (screen);
  
  set_wm_check_hint (screen);
570 571

  meta_screen_update_workspace_layout (screen);
Havoc Pennington's avatar
Havoc Pennington committed
572
  meta_screen_update_workspace_names (screen);
Havoc Pennington's avatar
Havoc Pennington committed
573 574 575 576 577 578 579 580 581 582 583

  /* Get current workspace */
  current_workspace = 0;
  if (meta_prop_get_cardinal (screen->display,
                              screen->xroot,
                              screen->display->atom_net_current_desktop,
                              &current_workspace))
    meta_verbose ("Read existing _NET_CURRENT_DESKTOP = %d\n",
                  (int) current_workspace);
  else
    meta_verbose ("No _NET_CURRENT_DESKTOP present\n");
rhp's avatar
...  
rhp committed
584
  
rhp's avatar
...  
rhp committed
585 586 587
  /* Screens must have at least one workspace at all times,
   * so create that required workspace.
   */
588
  meta_workspace_activate (meta_workspace_new (screen));
589
  update_num_workspaces (screen);
Havoc Pennington's avatar
Havoc Pennington committed
590
  
591
  screen->all_keys_grabbed = FALSE;
592
  screen->keys_grabbed = FALSE;
rhp's avatar
...  
rhp committed
593
  meta_screen_grab_keys (screen);
rhp's avatar
...  
rhp committed
594

rhp's avatar
...  
rhp committed
595
  screen->ui = meta_ui_new (screen->display->xdisplay,
rhp's avatar
...  
rhp committed
596
                            screen->xscreen);
rhp's avatar
...  
rhp committed
597

598 599
  screen->tab_popup = NULL;
  
rhp's avatar
...  
rhp committed
600
  screen->stack = meta_stack_new (screen);
601 602

  meta_prefs_add_listener (prefs_changed_callback, screen);
603 604 605 606 607 608 609 610 611 612 613

#ifdef HAVE_STARTUP_NOTIFICATION
  screen->sn_context =
    sn_monitor_context_new (screen->display->sn_display,
                            screen->number,
                            meta_screen_sn_event,
                            screen,
                            NULL);
  screen->startup_sequences = NULL;
  screen->startup_sequence_timeout = 0;
#endif
Havoc Pennington's avatar
Havoc Pennington committed
614 615 616 617 618 619 620 621 622 623 624

  /* Switch to the _NET_CURRENT_DESKTOP workspace */
  {
    MetaWorkspace *space;
    
    space = meta_screen_get_workspace_by_index (screen,
                                                current_workspace);
    
    if (space != NULL)
      meta_workspace_activate (space);
  }
rhp's avatar
...  
rhp committed
625
  
rhp's avatar
...  
rhp committed
626 627
  meta_verbose ("Added screen %d ('%s') root 0x%lx\n",
                screen->number, screen->screen_name, screen->xroot);  
rhp's avatar
...  
rhp committed
628 629 630 631 632 633
  
  return screen;
}

void
meta_screen_free (MetaScreen *screen)
Havoc Pennington's avatar
Havoc Pennington committed
634 635 636 637
{
  MetaDisplay *display;

  display = screen->display;
638 639

  screen->closing += 1;
Havoc Pennington's avatar
Havoc Pennington committed
640 641 642 643 644
  
  meta_display_grab (display);

  meta_display_unmanage_windows_for_screen (display, screen);
  
645 646
  meta_prefs_remove_listener (prefs_changed_callback, screen);
  
rhp's avatar
...  
rhp committed
647
  meta_screen_ungrab_keys (screen);
648

649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
#ifdef HAVE_STARTUP_NOTIFICATION
  g_slist_foreach (screen->startup_sequences,
                   (GFunc) sn_startup_sequence_unref, NULL);
  g_slist_free (screen->startup_sequences);
  screen->startup_sequences = NULL;

  if (screen->startup_sequence_timeout != 0)
    {
      g_source_remove (screen->startup_sequence_timeout);
      screen->startup_sequence_timeout = 0;
    }
  if (screen->sn_context)
    {
      sn_monitor_context_unref (screen->sn_context);
      screen->sn_context = NULL;
    }
#endif
  
rhp's avatar
...  
rhp committed
667
  meta_ui_free (screen->ui);
rhp's avatar
...  
rhp committed
668

rhp's avatar
...  
rhp committed
669
  meta_stack_free (screen->stack);
670

671
  meta_error_trap_push_with_return (screen->display);
672
  XSelectInput (screen->display->xdisplay, screen->xroot, 0);
673
  if (meta_error_trap_pop_with_return (screen->display, FALSE) != Success)
Havoc Pennington's avatar
Havoc Pennington committed
674
    meta_warning (_("Could not release screen %d on display \"%s\"\n"),
675
                  screen->number, screen->display->name);
676

Havoc Pennington's avatar
Havoc Pennington committed
677 678 679
  XDestroyWindow (screen->display->xdisplay,
                  screen->wm_sn_selection_window);
  
680 681
  if (screen->work_area_idle != 0)
    g_source_remove (screen->work_area_idle);
rhp's avatar
...  
rhp committed
682
  
rhp's avatar
...  
rhp committed
683
  g_free (screen->screen_name);
rhp's avatar
...  
rhp committed
684
  g_free (screen);
Havoc Pennington's avatar
Havoc Pennington committed
685

686
  XFlush (display->xdisplay);
Havoc Pennington's avatar
Havoc Pennington committed
687
  meta_display_ungrab (display);
rhp's avatar
...  
rhp committed
688 689
}

rhp's avatar
...  
rhp committed
690 691 692 693 694
void
meta_screen_manage_all_windows (MetaScreen *screen)
{
  Window ignored1, ignored2;
  Window *children;
695
  int n_children;
rhp's avatar
...  
rhp committed
696 697 698 699 700
  int i;

  /* Must grab server to avoid obvious race condition */
  meta_display_grab (screen->display);

701
  meta_error_trap_push_with_return (screen->display);
rhp's avatar
...  
rhp committed
702 703 704 705
  
  XQueryTree (screen->display->xdisplay,
              screen->xroot,
              &ignored1, &ignored2, &children, &n_children);
rhp's avatar
...  
rhp committed
706

707
  if (meta_error_trap_pop_with_return (screen->display, TRUE) != Success)
rhp's avatar
...  
rhp committed
708 709 710 711
    {
      meta_display_ungrab (screen->display);
      return;
    }
rhp's avatar
...  
rhp committed
712 713

  meta_stack_freeze (screen->stack);
rhp's avatar
...  
rhp committed
714 715 716
  i = 0;
  while (i < n_children)
    {
rhp's avatar
...  
rhp committed
717
      meta_window_new (screen->display, children[i], TRUE);
rhp's avatar
...  
rhp committed
718 719 720

      ++i;
    }
rhp's avatar
...  
rhp committed
721
  meta_stack_thaw (screen->stack);
rhp's avatar
...  
rhp committed
722 723 724 725 726 727

  meta_display_ungrab (screen->display);
  
  if (children)
    XFree (children);
}
rhp's avatar
...  
rhp committed
728 729 730 731 732 733 734 735 736 737 738 739 740

MetaScreen*
meta_screen_for_x_screen (Screen *xscreen)
{
  MetaDisplay *display;
  
  display = meta_display_for_x_display (DisplayOfScreen (xscreen));

  if (display == NULL)
    return NULL;
  
  return meta_display_screen_for_x_screen (display, xscreen);
}
rhp's avatar
...  
rhp committed
741

742 743 744 745 746 747 748 749 750 751
static void
prefs_changed_callback (MetaPreference pref,
                        gpointer       data)
{
  MetaScreen *screen = data;
  
  if (pref == META_PREF_NUM_WORKSPACES)
    {
      update_num_workspaces (screen);
    }
752 753 754 755
  else if (pref == META_PREF_FOCUS_MODE)
    {
      update_focus_mode (screen);
    }
756 757 758 759
  else if (pref == META_PREF_WORKSPACE_NAMES)
    {
      update_workspace_names (screen);
    }
760 761 762
}


rhp's avatar
...  
rhp committed
763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791
static char*
get_screen_name (MetaDisplay *display,
                 int          number)
{
  char *p;
  char *dname;
  char *scr;
  
  /* DisplayString gives us a sort of canonical display,
   * vs. the user-entered name from XDisplayName()
   */
  dname = g_strdup (DisplayString (display->xdisplay));

  /* Change display name to specify this screen.
   */
  p = strrchr (dname, ':');
  if (p)
    {
      p = strchr (p, '.');
      if (p)
        *p = '\0';
    }
  
  scr = g_strdup_printf ("%s.%d", dname, number);

  g_free (dname);

  return scr;
}
rhp's avatar
...  
rhp committed
792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847

static gint
ptrcmp (gconstpointer a, gconstpointer b)
{
  if (a < b)
    return -1;
  else if (a > b)
    return 1;
  else
    return 0;
}

static void
listify_func (gpointer key, gpointer value, gpointer data)
{
  GSList **listp;
  
  listp = data;

  *listp = g_slist_prepend (*listp, value);
}

void
meta_screen_foreach_window (MetaScreen *screen,
                            MetaScreenWindowFunc func,
                            gpointer data)
{
  GSList *winlist;
  GSList *tmp;

  /* If we end up doing this often, just keeping a list
   * of windows might be sensible.
   */
  
  winlist = NULL;
  g_hash_table_foreach (screen->display->window_ids,
                        listify_func,
                        &winlist);
  
  winlist = g_slist_sort (winlist, ptrcmp);
  
  tmp = winlist;
  while (tmp != NULL)
    {
      /* If the next node doesn't contain this window
       * a second time, delete the window.
       */
      if (tmp->next == NULL ||
          (tmp->next && tmp->next->data != tmp->data))
        {
          MetaWindow *window = tmp->data;

          if (window->screen == screen)
            (* func) (screen, window, data);
        }
      
848
      tmp = tmp->next;
rhp's avatar
...  
rhp committed
849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864
    }
  g_slist_free (winlist);
}

static void
queue_draw (MetaScreen *screen, MetaWindow *window, gpointer data)
{
  if (window->frame)
    meta_frame_queue_draw (window->frame);
}

void
meta_screen_queue_frame_redraws (MetaScreen *screen)
{
  meta_screen_foreach_window (screen, queue_draw, NULL);
}
rhp's avatar
...  
rhp committed
865

rhp's avatar
...  
rhp committed
866 867 868 869 870 871 872 873 874 875 876
static void
queue_resize (MetaScreen *screen, MetaWindow *window, gpointer data)
{
  meta_window_queue_move_resize (window);
}

void
meta_screen_queue_window_resizes (MetaScreen *screen)
{
  meta_screen_foreach_window (screen, queue_resize, NULL);
}
rhp's avatar
...  
rhp committed
877

rhp's avatar
rhp committed
878 879
int
meta_screen_get_n_workspaces (MetaScreen *screen)
880 881 882 883 884 885 886
{
  return g_list_length (screen->workspaces);
}

MetaWorkspace*
meta_screen_get_workspace_by_index (MetaScreen  *screen,
                                    int          idx)
rhp's avatar
rhp committed
887 888 889 890
{
  GList *tmp;
  int i;

891 892 893 894
  /* should be robust, idx is maybe from an app */
  if (idx < 0)
    return NULL;
  
rhp's avatar
rhp committed
895
  i = 0;
896
  tmp = screen->workspaces;
rhp's avatar
rhp committed
897 898 899 900
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

901 902 903 904
      if (i == idx)
        return w;

      ++i;
rhp's avatar
rhp committed
905 906 907
      tmp = tmp->next;
    }

908
  return NULL;
909
}
rhp's avatar
rhp committed
910

911
static void
912 913 914 915 916 917
set_number_of_spaces_hint (MetaScreen *screen,
			   int         n_spaces)
{
  unsigned long data[1];

  if (screen->closing > 0)
918
    return;
919 920 921 922 923 924 925 926 927 928

  data[0] = n_spaces;

  meta_verbose ("Setting _NET_NUMBER_OF_DESKTOPS to %ld\n", data[0]);

  meta_error_trap_push (screen->display);
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_net_number_of_desktops,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) data, 1);
929
  meta_error_trap_pop (screen->display, FALSE);
930 931
}

932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948
static void
update_num_workspaces (MetaScreen *screen)
{
  int new_num;
  GList *tmp;
  int i;
  GList *extras;
  MetaWorkspace *last_remaining;
  gboolean need_change_space;
  
  new_num = meta_prefs_get_num_workspaces ();

  g_assert (new_num > 0);

  last_remaining = NULL;
  extras = NULL;
  i = 0;
949
  tmp = screen->workspaces;
950 951 952 953
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

954
      if (i >= new_num)
955 956 957 958 959
        extras = g_list_prepend (extras, w);
      else
        last_remaining = w;
          
      ++i;
960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006
      tmp = tmp->next;
    }

  g_assert (last_remaining);
  
  /* Get rid of the extra workspaces by moving all their windows
   * to last_remaining, then activating last_remaining if
   * one of the removed workspaces was active. This will be a bit
   * wacky if the config tool for changing number of workspaces
   * is on a removed workspace ;-)
   */
  need_change_space = FALSE;
  tmp = extras;
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

      meta_workspace_relocate_windows (w, last_remaining);      

      if (w == screen->active_workspace)
        need_change_space = TRUE;
      
      tmp = tmp->next;
    }

  if (need_change_space)
    meta_workspace_activate (last_remaining);

  /* Should now be safe to free the workspaces */
  tmp = extras;
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

      g_assert (w->windows == NULL);
      meta_workspace_free (w);
      
      tmp = tmp->next;
    }
  
  g_list_free (extras);
  
  while (i < new_num)
    {
      meta_workspace_new (screen);
      ++i;
    }
1007

1008 1009
  set_number_of_spaces_hint (screen, new_num);

1010
  meta_screen_queue_workarea_recalc (screen);
rhp's avatar
rhp committed
1011
}
rhp's avatar
...  
rhp committed
1012

1013 1014 1015
static void
update_focus_mode (MetaScreen *screen)
{
1016
  /* nothing to do anymore */ ;
1017 1018
}

rhp's avatar
...  
rhp committed
1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033
void
meta_screen_set_cursor (MetaScreen *screen,
                        MetaCursor  cursor)
{
  Cursor xcursor;

  if (cursor == screen->current_cursor)
    return;

  screen->current_cursor = cursor;
  
  xcursor = meta_display_create_x_cursor (screen->display, cursor);
  XDefineCursor (screen->display->xdisplay, screen->xroot, xcursor);
  XFreeCursor (screen->display->xdisplay, xcursor);
}
1034 1035

void
Havoc Pennington's avatar
Havoc Pennington committed
1036 1037
meta_screen_ensure_tab_popup (MetaScreen *screen,
                              MetaTabList type)
1038 1039 1040 1041 1042 1043
{
  MetaTabEntry *entries;
  GSList *tab_list;
  GSList *tmp;
  int len;
  int i;
1044

1045 1046 1047
  if (screen->tab_popup)
    return;

Havoc Pennington's avatar
Havoc Pennington committed
1048
  tab_list = meta_display_get_tab_list (screen->display,
Havoc Pennington's avatar
Havoc Pennington committed
1049
                                        type,
Havoc Pennington's avatar
Havoc Pennington committed
1050 1051 1052
                                        screen,
                                        screen->active_workspace);
  
1053 1054 1055
  len = g_slist_length (tab_list);

  entries = g_new (MetaTabEntry, len + 1);
1056
  entries[len].key = NULL;
1057 1058 1059 1060 1061 1062 1063 1064
  entries[len].title = NULL;
  entries[len].icon = NULL;
  
  i = 0;
  tmp = tab_list;
  while (i < len)
    {
      MetaWindow *window;
1065 1066
      MetaRectangle r;
      
1067 1068
      window = tmp->data;
      
1069
      entries[i].key = (MetaTabEntryKey) window->xwindow;
1070 1071
      entries[i].title = window->title;
      entries[i].icon = window->icon;
1072 1073
      entries[i].blank = FALSE;
      
Havoc Pennington's avatar
Havoc Pennington committed
1074 1075 1076
      if (!window->minimized || !meta_window_get_icon_geometry (window, &r))
        meta_window_get_outer_rect (window, &r);
      
1077 1078 1079 1080
      entries[i].x = r.x;
      entries[i].y = r.y;
      entries[i].width = r.width;
      entries[i].height = r.height;
1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107

      /* Find inside of highlight rectangle to be used
       * when window is outlined for tabbing.
       * This should be the size of the east/west frame,
       * and the size of the south frame, on those sides.
       * on the top it should be the size of the south frame
       * edge.
       */
      if (window->frame)
        {
          int south = window->frame->rect.height - window->frame->child_y -
            window->rect.height;
          int east = window->frame->child_x;
          entries[i].inner_x = east;
          entries[i].inner_y = south;
          entries[i].inner_width = window->rect.width;
          entries[i].inner_height = window->frame->rect.height - south * 2;
        }
      else
        {
          /* Use an arbitrary border size */
#define OUTLINE_WIDTH 5
          entries[i].inner_x = OUTLINE_WIDTH;
          entries[i].inner_y = OUTLINE_WIDTH;
          entries[i].inner_width = window->rect.width - OUTLINE_WIDTH * 2;
          entries[i].inner_height = window->rect.height - OUTLINE_WIDTH * 2;
        }
1108 1109 1110 1111
      
      ++i;
      tmp = tmp->next;
    }
1112

1113 1114 1115 1116 1117
  screen->tab_popup = meta_ui_tab_popup_new (entries, 
                                             screen->number,
                                             len,
                                             5, /* FIXME */
                                             TRUE);
1118 1119
  g_free (entries);

1120 1121
  g_slist_free (tab_list);
  
1122 1123
  /* don't show tab popup, since proper window isn't selected yet */
}
1124

1125 1126 1127 1128
void
meta_screen_ensure_workspace_popup (MetaScreen *screen)
{
  MetaTabEntry *entries;
1129
  int len;
1130
  int i;
1131 1132 1133 1134
  MetaWorkspaceLayout layout;
  int n_workspaces;
  int current_workspace;
  
1135 1136 1137
  if (screen->tab_popup)
    return;

1138 1139
  current_workspace = meta_workspace_index (screen->active_workspace);
  n_workspaces = meta_screen_get_n_workspaces (screen);
1140

1141 1142 1143 1144 1145
  meta_screen_calc_workspace_layout (screen, n_workspaces,
                                     current_workspace, &layout);

  len = layout.grid_area;
  
1146 1147 1148 1149 1150
  entries = g_new (MetaTabEntry, len + 1);
  entries[len].key = NULL;
  entries[len].title = NULL;
  entries[len].icon = NULL;

1151 1152
  i = 0;
  while (i < len)
1153
    {
1154
      if (layout.grid[i] >= 0)
1155 1156
        {
          MetaWorkspace *workspace;
1157 1158 1159 1160
          
          workspace = meta_screen_get_workspace_by_index (screen,
                                                          layout.grid[i]);
          
1161
          entries[i].key = (MetaTabEntryKey) workspace;
1162
          entries[i].title = meta_workspace_get_name (workspace);
1163
          entries[i].icon = NULL;
1164 1165
          entries[i].blank = FALSE;
          
1166
          g_assert (entries[i].title != NULL);
1167
        }
1168 1169 1170 1171 1172 1173 1174 1175 1176
      else
        {
          entries[i].key = NULL;
          entries[i].title = NULL;
          entries[i].icon = NULL;
          entries[i].blank = TRUE;
        }

      ++i;
1177 1178 1179 1180 1181
    }

  screen->tab_popup = meta_ui_tab_popup_new (entries, 
                                             screen->number,
                                             len,
1182
                                             layout.cols,
1183 1184 1185
                                             FALSE);      

  g_free (entries);
1186
  meta_screen_free_workspace_layout (&layout);
1187

1188
  /* don't show tab popup, since proper space isn't selected yet */
1189 1190
}

1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207