screen.c 72.6 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
8
 * Copyright (C) 2003 Rob Adams
rhp's avatar
...  
rhp committed
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
 * 
 * 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
25

26
#include <config.h>
rhp's avatar
...  
rhp committed
27 28
#include "screen.h"
#include "util.h"
rhp's avatar
...  
rhp committed
29
#include "errors.h"
rhp's avatar
...  
rhp committed
30
#include "window.h"
rhp's avatar
...  
rhp committed
31
#include "frame.h"
32
#include "prefs.h"
rhp's avatar
...  
rhp committed
33 34
#include "workspace.h"
#include "keybindings.h"
rhp's avatar
...  
rhp committed
35
#include "stack.h"
36
#include "xprops.h"
Havoc Pennington's avatar
Havoc Pennington committed
37
#include "compositor.h"
rhp's avatar
...  
rhp committed
38

39 40 41 42
#ifdef HAVE_SOLARIS_XINERAMA
#include <X11/extensions/xinerama.h>
#endif
#ifdef HAVE_XFREE_XINERAMA
43 44 45
#include <X11/extensions/Xinerama.h>
#endif

rhp's avatar
...  
rhp committed
46
#include <X11/Xatom.h>
rhp's avatar
...  
rhp committed
47 48
#include <locale.h>
#include <string.h>
Havoc Pennington's avatar
Havoc Pennington committed
49
#include <stdio.h>
rhp's avatar
...  
rhp committed
50

rhp's avatar
...  
rhp committed
51 52 53
static char* get_screen_name (MetaDisplay *display,
                              int          number);

54
static void update_num_workspaces  (MetaScreen *screen);
55
static void update_focus_mode      (MetaScreen *screen);
56
static void set_workspace_names    (MetaScreen *screen);
57 58
static void prefs_changed_callback (MetaPreference pref,
                                    gpointer       data);
rhp's avatar
...  
rhp committed
59

60 61 62
static void set_desktop_geometry_hint (MetaScreen *screen);
static void set_desktop_viewport_hint (MetaScreen *screen);

63 64 65 66 67
#ifdef HAVE_STARTUP_NOTIFICATION
static void meta_screen_sn_event   (SnMonitorEvent *event,
                                    void           *user_data);
#endif

rhp's avatar
...  
rhp committed
68 69 70 71 72
static int
set_wm_check_hint (MetaScreen *screen)
{
  unsigned long data[1];

rhp's avatar
...  
rhp committed
73 74
  g_return_val_if_fail (screen->display->leader_window != None, 0);
  
rhp's avatar
...  
rhp committed
75 76 77 78 79 80
  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
81

rhp's avatar
...  
rhp committed
82 83 84 85 86 87
  return Success;
}

static int
set_supported_hint (MetaScreen *screen)
{
88
#define N_SUPPORTED 58
rhp's avatar
...  
rhp committed
89
  Atom atoms[N_SUPPORTED];
rhp's avatar
...  
rhp committed
90
  
rhp's avatar
...  
rhp committed
91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107
  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
108 109
  atoms[17] = screen->display->atom_net_client_list;
  atoms[18] = screen->display->atom_net_client_list_stacking;
rhp's avatar
...  
rhp committed
110 111
  atoms[19] = screen->display->atom_net_wm_state_skip_taskbar;
  atoms[20] = screen->display->atom_net_wm_state_skip_pager;
112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138
  atoms[21] = screen->display->atom_net_wm_icon_name;
  atoms[22] = screen->display->atom_net_wm_icon;
  atoms[23] = screen->display->atom_net_wm_icon_geometry;
  atoms[24] = screen->display->atom_net_wm_moveresize;
  atoms[25] = screen->display->atom_net_active_window;
  atoms[26] = screen->display->atom_net_wm_strut;
  atoms[27] = screen->display->atom_net_wm_state_hidden;
  atoms[28] = screen->display->atom_net_wm_window_type_utility;
  atoms[29] = screen->display->atom_net_wm_window_type_splash;
  atoms[30] = screen->display->atom_net_wm_state_fullscreen;
  atoms[31] = screen->display->atom_net_wm_ping;
  atoms[32] = screen->display->atom_net_wm_pid;
  atoms[33] = screen->display->atom_net_workarea;
  atoms[34] = screen->display->atom_net_showing_desktop;
  atoms[35] = screen->display->atom_net_desktop_layout;
  atoms[36] = screen->display->atom_net_desktop_names;
  atoms[37] = screen->display->atom_net_wm_allowed_actions;
  atoms[38] = screen->display->atom_net_wm_action_move;
  atoms[39] = screen->display->atom_net_wm_action_resize;
  atoms[40] = screen->display->atom_net_wm_action_shade;
  atoms[41] = screen->display->atom_net_wm_action_stick;
  atoms[42] = screen->display->atom_net_wm_action_maximize_horz;
  atoms[43] = screen->display->atom_net_wm_action_maximize_vert;
  atoms[44] = screen->display->atom_net_wm_action_change_desktop;
  atoms[45] = screen->display->atom_net_wm_action_close;
  atoms[46] = screen->display->atom_net_wm_state_above;
  atoms[47] = screen->display->atom_net_wm_state_below;
Elijah Newren's avatar
Elijah Newren committed
139 140 141 142 143 144
  atoms[48] = screen->display->atom_net_startup_id;
  atoms[49] = screen->display->atom_net_wm_strut_partial;
  atoms[50] = screen->display->atom_net_wm_action_fullscreen;
  atoms[51] = screen->display->atom_net_wm_action_minimize;
  atoms[52] = screen->display->atom_net_frame_extents;
  atoms[53] = screen->display->atom_net_request_frame_extents;
145 146 147 148 149 150
  atoms[54] = screen->display->atom_net_wm_user_time;
  atoms[55] = screen->display->atom_net_wm_state_demands_attention;
  atoms[56] = screen->display->atom_net_desktop_geometry;
  atoms[57] = screen->display->atom_net_desktop_viewport;
  //atoms[58] = screen->display->atom_net_restack_window;
  //atoms[59] = screen->display->atom_net_moveresize_window;
rhp's avatar
...  
rhp committed
151 152
  
  XChangeProperty (screen->display->xdisplay, screen->xroot,
153
                   screen->display->atom_net_supported,
rhp's avatar
...  
rhp committed
154 155
                   XA_ATOM,
                   32, PropModeReplace, (guchar*) atoms, N_SUPPORTED);
rhp's avatar
...  
rhp committed
156
  
rhp's avatar
...  
rhp committed
157 158 159 160
  return Success;
#undef N_SUPPORTED
}

Havoc Pennington's avatar
Havoc Pennington committed
161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183
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
}

184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265
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;
266
      result = XineramaGetInfo (screen->display->xdisplay,
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
                                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);
356 357 358 359 360 361 362 363 364 365 366 367 368 369

  {
    GList *tmp;

    tmp = screen->workspaces;
    while (tmp != NULL)
      {
        MetaWorkspace *space = tmp->data;

        meta_workspace_invalidate_work_area (space);
        
        tmp = tmp->next;
      }
  }
370 371
}

rhp's avatar
...  
rhp committed
372 373
MetaScreen*
meta_screen_new (MetaDisplay *display,
374 375
                 int          number,
                 Time         timestamp)
rhp's avatar
...  
rhp committed
376 377
{
  MetaScreen *screen;
rhp's avatar
...  
rhp committed
378 379
  Window xroot;
  Display *xdisplay;
380
  XWindowAttributes attr;
Havoc Pennington's avatar
Havoc Pennington committed
381 382 383 384 385 386
  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
387
  gulong current_workspace;
Havoc Pennington's avatar
Havoc Pennington committed
388 389
  
  replace_current_wm = meta_get_replace_current_wm ();
rhp's avatar
...  
rhp committed
390
  
rhp's avatar
...  
rhp committed
391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412
  /* 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
413 414 415 416 417 418 419 420 421 422 423
  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)
        {
424
          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
425 426 427 428 429 430
                        number, display->name);

          return NULL;
        }

      /* We want to find out when the current selection owner dies */
431
      meta_error_trap_push_with_return (display);
Havoc Pennington's avatar
Havoc Pennington committed
432 433 434
      attrs.event_mask = StructureNotifyMask;
      XChangeWindowAttributes (xdisplay,
                               current_wm_sn_owner, CWEventMask, &attrs);
435
      if (meta_error_trap_pop_with_return (display, FALSE) != Success)
Havoc Pennington's avatar
Havoc Pennington committed
436 437 438
        current_wm_sn_owner = None; /* don't wait for it to die later on */
    }

439
  new_wm_sn_owner = meta_create_offscreen_window (xdisplay, xroot);
Havoc Pennington's avatar
Havoc Pennington committed
440

441
  manager_timestamp = timestamp;
Havoc Pennington's avatar
Havoc Pennington committed
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
  
  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 */
487
  meta_error_trap_push_with_return (display);
488 489 490 491 492

  /* 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
493 494 495 496 497
  XSelectInput (xdisplay,
                xroot,
                SubstructureRedirectMask | SubstructureNotifyMask |
                ColormapChangeMask | PropertyChangeMask |
                LeaveWindowMask | EnterWindowMask |
498
                KeyPressMask | KeyReleaseMask |
499
                FocusChangeMask | StructureNotifyMask |
500 501 502
#ifdef HAVE_COMPOSITE_EXTENSIONS
                ExposureMask |
#endif
503
		attr.your_event_mask);
504
  if (meta_error_trap_pop_with_return (display, FALSE) != Success)
rhp's avatar
...  
rhp committed
505
    {
Havoc Pennington's avatar
Havoc Pennington committed
506
      meta_warning (_("Screen %d on display \"%s\" already has a window manager\n"),
rhp's avatar
...  
rhp committed
507
                    number, display->name);
Havoc Pennington's avatar
Havoc Pennington committed
508 509 510

      XDestroyWindow (xdisplay, new_wm_sn_owner);
      
rhp's avatar
...  
rhp committed
511 512
      return NULL;
    }
rhp's avatar
...  
rhp committed
513 514
  
  screen = g_new (MetaScreen, 1);
515
  screen->closing = 0;
Havoc Pennington's avatar
Havoc Pennington committed
516
  
rhp's avatar
...  
rhp committed
517
  screen->display = display;
rhp's avatar
...  
rhp committed
518
  screen->number = number;
rhp's avatar
...  
rhp committed
519
  screen->screen_name = get_screen_name (display, number);
rhp's avatar
...  
rhp committed
520
  screen->xscreen = ScreenOfDisplay (xdisplay, number);
rhp's avatar
...  
rhp committed
521
  screen->xroot = xroot;
rhp's avatar
...  
rhp committed
522 523
  screen->width = WidthOfScreen (screen->xscreen);
  screen->height = HeightOfScreen (screen->xscreen);
rhp's avatar
...  
rhp committed
524
  screen->current_cursor = -1; /* invalid/unset */
Havoc Pennington's avatar
Havoc Pennington committed
525 526
  screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen);
  screen->default_depth = DefaultDepthOfScreen (screen->xscreen);
527
  screen->flash_window = None;
528

Havoc Pennington's avatar
Havoc Pennington committed
529 530 531 532
  screen->wm_sn_selection_window = new_wm_sn_owner;
  screen->wm_sn_atom = wm_sn_atom;
  screen->wm_sn_timestamp = manager_timestamp;
  
533
  screen->work_area_idle = 0;
534

535
  screen->active_workspace = NULL;
536
  screen->workspaces = NULL;
537 538 539
  screen->rows_of_workspaces = 1;
  screen->columns_of_workspaces = -1;
  screen->vertical_workspaces = FALSE;
540
  screen->starting_corner = META_SCREEN_TOPLEFT;
541

542 543
  screen->compositor_windows = NULL;
  screen->damage_region = None;
544
  screen->root_picture = None;
545 546
  screen->trans_pixmap = None;
  screen->trans_picture = None;
547
  
548
  {
Ray Strode's avatar
Ray Strode committed
549
    XFontStruct *font_info;
550
    XGCValues gc_values;
Ray Strode's avatar
Ray Strode committed
551
    gulong value_mask = 0;
552 553
    
    gc_values.subwindow_mode = IncludeInferiors;
Ray Strode's avatar
Ray Strode committed
554
    value_mask |= GCSubwindowMode;
555
    gc_values.function = GXinvert;
Ray Strode's avatar
Ray Strode committed
556
    value_mask |= GCFunction;
557
    gc_values.line_width = META_WIREFRAME_XOR_LINE_WIDTH;
Ray Strode's avatar
Ray Strode committed
558 559 560 561 562 563 564 565 566 567 568 569 570
    value_mask |= GCLineWidth;

    font_info = XLoadQueryFont (screen->display->xdisplay, "fixed");

    if (font_info != NULL)
      {
        gc_values.font = font_info->fid;
        value_mask |= GCFont;
        XFreeFontInfo (NULL, font_info, 0);
      }
    else
      meta_warning ("xserver doesn't have 'fixed' font.\n");

571 572
    screen->root_xor_gc = XCreateGC (screen->display->xdisplay,
                                     screen->xroot,
Ray Strode's avatar
Ray Strode committed
573
                                     value_mask,
574 575
                                     &gc_values);
  }
576
  
577 578
  screen->xinerama_infos = NULL;
  screen->n_xinerama_infos = 0;
579
  screen->last_xinerama_index = 0;  
580
  
581
  reload_xinerama_infos (screen);
rhp's avatar
...  
rhp committed
582 583
  
  meta_screen_set_cursor (screen, META_CURSOR_DEFAULT);
rhp's avatar
...  
rhp committed
584
  
585 586
  if (display->no_focus_window == None)
    {
587 588 589
      display->no_focus_window = meta_create_offscreen_window (display->xdisplay,
                                                               screen->xroot);

590
      XSelectInput (display->xdisplay, display->no_focus_window,
591
                    FocusChangeMask | KeyPressMask | KeyReleaseMask);
592 593 594
      XMapWindow (display->xdisplay, display->no_focus_window);
    }
  
Havoc Pennington's avatar
Havoc Pennington committed
595
  set_wm_icon_size_hint (screen);
rhp's avatar
...  
rhp committed
596
  
rhp's avatar
...  
rhp committed
597 598 599
  set_supported_hint (screen);
  
  set_wm_check_hint (screen);
600

601 602 603 604
  set_desktop_viewport_hint (screen);

  set_desktop_geometry_hint (screen);

605
  meta_screen_update_workspace_layout (screen);
Havoc Pennington's avatar
Havoc Pennington committed
606 607 608 609 610 611 612 613 614 615 616

  /* 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
617
  
rhp's avatar
...  
rhp committed
618 619 620
  /* Screens must have at least one workspace at all times,
   * so create that required workspace.
   */
621
  meta_workspace_activate (meta_workspace_new (screen), timestamp);
622
  update_num_workspaces (screen);
Havoc Pennington's avatar
Havoc Pennington committed
623
  
624 625
  set_workspace_names (screen);

626
  screen->all_keys_grabbed = FALSE;
627
  screen->keys_grabbed = FALSE;
rhp's avatar
...  
rhp committed
628
  meta_screen_grab_keys (screen);
rhp's avatar
...  
rhp committed
629

rhp's avatar
...  
rhp committed
630
  screen->ui = meta_ui_new (screen->display->xdisplay,
rhp's avatar
...  
rhp committed
631
                            screen->xscreen);
rhp's avatar
...  
rhp committed
632

633 634
  screen->tab_popup = NULL;
  
rhp's avatar
...  
rhp committed
635
  screen->stack = meta_stack_new (screen);
636 637

  meta_prefs_add_listener (prefs_changed_callback, screen);
638 639 640 641 642 643 644 645 646 647 648

#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
649 650 651 652 653 654 655 656 657

  /* Switch to the _NET_CURRENT_DESKTOP workspace */
  {
    MetaWorkspace *space;
    
    space = meta_screen_get_workspace_by_index (screen,
                                                current_workspace);
    
    if (space != NULL)
658
      meta_workspace_activate (space, timestamp);
Havoc Pennington's avatar
Havoc Pennington committed
659
  }
Havoc Pennington's avatar
Havoc Pennington committed
660 661 662

  meta_compositor_manage_screen (screen->display->compositor,
                                 screen);
rhp's avatar
...  
rhp committed
663
  
rhp's avatar
...  
rhp committed
664
  meta_verbose ("Added screen %d ('%s') root 0x%lx\n",
Havoc Pennington's avatar
Havoc Pennington committed
665
                screen->number, screen->screen_name, screen->xroot);
rhp's avatar
...  
rhp committed
666 667 668 669 670 671
  
  return screen;
}

void
meta_screen_free (MetaScreen *screen)
Havoc Pennington's avatar
Havoc Pennington committed
672 673 674 675
{
  MetaDisplay *display;

  display = screen->display;
676 677

  screen->closing += 1;
Havoc Pennington's avatar
Havoc Pennington committed
678 679 680
  
  meta_display_grab (display);

Havoc Pennington's avatar
Havoc Pennington committed
681 682 683
  meta_compositor_unmanage_screen (screen->display->compositor,
                                   screen);
  
Havoc Pennington's avatar
Havoc Pennington committed
684 685
  meta_display_unmanage_windows_for_screen (display, screen);
  
686 687
  meta_prefs_remove_listener (prefs_changed_callback, screen);
  
rhp's avatar
...  
rhp committed
688
  meta_screen_ungrab_keys (screen);
689

690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707
#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
708
  meta_ui_free (screen->ui);
rhp's avatar
...  
rhp committed
709

rhp's avatar
...  
rhp committed
710
  meta_stack_free (screen->stack);
711

712
  meta_error_trap_push_with_return (screen->display);
713
  XSelectInput (screen->display->xdisplay, screen->xroot, 0);
714
  if (meta_error_trap_pop_with_return (screen->display, FALSE) != Success)
Havoc Pennington's avatar
Havoc Pennington committed
715
    meta_warning (_("Could not release screen %d on display \"%s\"\n"),
716
                  screen->number, screen->display->name);
717

Havoc Pennington's avatar
Havoc Pennington committed
718 719 720
  XDestroyWindow (screen->display->xdisplay,
                  screen->wm_sn_selection_window);
  
721 722
  if (screen->work_area_idle != 0)
    g_source_remove (screen->work_area_idle);
723 724 725

  XFreeGC (screen->display->xdisplay,
           screen->root_xor_gc);
rhp's avatar
...  
rhp committed
726
  
rhp's avatar
...  
rhp committed
727
  g_free (screen->screen_name);
rhp's avatar
...  
rhp committed
728
  g_free (screen);
Havoc Pennington's avatar
Havoc Pennington committed
729

730
  XFlush (display->xdisplay);
Havoc Pennington's avatar
Havoc Pennington committed
731
  meta_display_ungrab (display);
rhp's avatar
...  
rhp committed
732 733
}

rhp's avatar
...  
rhp committed
734 735 736 737 738
void
meta_screen_manage_all_windows (MetaScreen *screen)
{
  Window ignored1, ignored2;
  Window *children;
739
  int n_children;
rhp's avatar
...  
rhp committed
740 741 742 743 744
  int i;

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

745
  meta_error_trap_push_with_return (screen->display);
rhp's avatar
...  
rhp committed
746 747 748 749
  
  XQueryTree (screen->display->xdisplay,
              screen->xroot,
              &ignored1, &ignored2, &children, &n_children);
rhp's avatar
...  
rhp committed
750

751
  if (meta_error_trap_pop_with_return (screen->display, TRUE) != Success)
rhp's avatar
...  
rhp committed
752 753 754 755
    {
      meta_display_ungrab (screen->display);
      return;
    }
rhp's avatar
...  
rhp committed
756 757

  meta_stack_freeze (screen->stack);
rhp's avatar
...  
rhp committed
758 759 760
  i = 0;
  while (i < n_children)
    {
Havoc Pennington's avatar
Havoc Pennington committed
761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776
      XWindowAttributes attrs;
      
      meta_error_trap_push_with_return (screen->display);
      
      XGetWindowAttributes (screen->display->xdisplay,
                            children[i], &attrs);
      
      if (meta_error_trap_pop_with_return (screen->display, TRUE) != Success)
        {
          meta_verbose ("Failed to get attributes for window 0x%lx\n",
                        children[i]);
        }
      else
        {
          meta_window_new_with_attrs (screen->display, children[i], TRUE,
                                      &attrs);
777

778 779
          meta_compositor_add_window (screen->display->compositor,
                                      children[i], &attrs);
Havoc Pennington's avatar
Havoc Pennington committed
780
        }
rhp's avatar
...  
rhp committed
781 782 783

      ++i;
    }
rhp's avatar
...  
rhp committed
784
  meta_stack_thaw (screen->stack);
rhp's avatar
...  
rhp committed
785 786 787 788 789 790

  meta_display_ungrab (screen->display);
  
  if (children)
    XFree (children);
}
rhp's avatar
...  
rhp committed
791 792 793 794 795 796 797 798 799 800 801 802 803

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
804

805 806 807 808 809 810 811 812 813 814
static void
prefs_changed_callback (MetaPreference pref,
                        gpointer       data)
{
  MetaScreen *screen = data;
  
  if (pref == META_PREF_NUM_WORKSPACES)
    {
      update_num_workspaces (screen);
    }
815 816 817 818
  else if (pref == META_PREF_FOCUS_MODE)
    {
      update_focus_mode (screen);
    }
819 820
  else if (pref == META_PREF_WORKSPACE_NAMES)
    {
821
      set_workspace_names (screen);
822
    }
823 824 825
}


rhp's avatar
...  
rhp committed
826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854
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
855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910

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);
        }
      
911
      tmp = tmp->next;
rhp's avatar
...  
rhp committed
912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927
    }
  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
928

rhp's avatar
...  
rhp committed
929 930 931 932 933 934 935 936 937 938 939
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
940

rhp's avatar
rhp committed
941 942
int
meta_screen_get_n_workspaces (MetaScreen *screen)
943 944 945 946 947 948 949
{
  return g_list_length (screen->workspaces);
}

MetaWorkspace*
meta_screen_get_workspace_by_index (MetaScreen  *screen,
                                    int          idx)
rhp's avatar
rhp committed
950 951 952 953
{
  GList *tmp;
  int i;

954 955 956 957
  /* should be robust, idx is maybe from an app */
  if (idx < 0)
    return NULL;
  
rhp's avatar
rhp committed
958
  i = 0;
959
  tmp = screen->workspaces;
rhp's avatar
rhp committed
960 961 962 963
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

964 965 966 967
      if (i == idx)
        return w;

      ++i;
rhp's avatar
rhp committed
968 969 970
      tmp = tmp->next;
    }

971
  return NULL;
972
}
rhp's avatar
rhp committed
973

974
static void
975 976 977 978 979 980
set_number_of_spaces_hint (MetaScreen *screen,
			   int         n_spaces)
{
  unsigned long data[1];

  if (screen->closing > 0)
981
    return;
982 983 984 985 986 987 988 989 990 991

  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);
992
  meta_error_trap_pop (screen->display, FALSE);
993 994
}

995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039
static void
set_desktop_geometry_hint (MetaScreen *screen)
{
  unsigned long data[2];

  if (screen->closing > 0)
    return;

  data[0] = screen->width;
  data[1] = screen->height;

  meta_verbose ("Setting _NET_DESKTOP_GEOMETRY to %ld, %ld\n", data[0], data[1]);

  meta_error_trap_push (screen->display);
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_net_desktop_geometry,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) data, 2);
  meta_error_trap_pop (screen->display, FALSE);
}

static void
set_desktop_viewport_hint (MetaScreen *screen)
{
  unsigned long data[2];

  if (screen->closing > 0)
    return;

  /*
   * Metacity does not implement viewports, so this is a fixed 0,0
   */
  data[0] = 0;
  data[1] = 0;

  meta_verbose ("Setting _NET_DESKTOP_VIEWPORT to 0, 0\n");

  meta_error_trap_push (screen->display);
  XChangeProperty (screen->display->xdisplay, screen->xroot,
                   screen->display->atom_net_desktop_viewport,
                   XA_CARDINAL,
                   32, PropModeReplace, (guchar*) data, 2);
  meta_error_trap_pop (screen->display, FALSE);
}

1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056
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;
1057
  tmp = screen->workspaces;
1058 1059 1060 1061
  while (tmp != NULL)
    {
      MetaWorkspace *w = tmp->data;

1062
      if (i >= new_num)
1063 1064 1065 1066 1067
        extras = g_list_prepend (extras, w);
      else
        last_remaining = w;
          
      ++i;
1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093
      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)
1094
    meta_workspace_activate (last_remaining, meta_display_get_current_time_roundtrip (screen->display));
1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114

  /* 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;
    }
1115

1116 1117
  set_number_of_spaces_hint (screen, new_num);

1118
  meta_screen_queue_workarea_recalc (screen);
rhp's avatar
rhp committed
1119
}
rhp's avatar
...  
rhp committed
1120

1121 1122 1123
static void
update_focus_mode (MetaScreen *screen)
{
1124
  /* nothing to do anymore */ ;
1125 1126
}

rhp's avatar
...  
rhp committed
1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139
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);
1140
  XFlush (screen->display->xdisplay);
rhp's avatar
...  
rhp committed
1141 1142
  XFreeCursor (screen->display->xdisplay, xcursor);
}
1143 1144

void
Havoc Pennington's avatar
Havoc Pennington committed
1145 1146
meta_screen_ensure_tab_popup (MetaScreen *screen,
                              MetaTabList type)
1147 1148
{
  MetaTabEntry *entries;
1149 1150
  GList *tab_list;
  GList *tmp;
1151 1152
  int len;
  int i;
1153

1154 1155 1156
  if (screen->tab_popup)
    return;

Havoc Pennington's avatar
Havoc Pennington committed
1157
  tab_list = meta_display_get_tab_list (screen->display,
Havoc Pennington's avatar
Havoc Pennington committed
1158
                                        type,
Havoc Pennington's avatar
Havoc Pennington committed
1159 1160 1161
                                        screen,
                                        screen->active_workspace);
  
1162
  len = g_list_length (tab_list);
1163 1164

  entries = g_new (MetaTabEntry, len + 1);
1165
  entries[len].key = NULL;
1166 1167 1168 1169 1170 1171 1172 1173
  entries[len].title = NULL;
  entries[len].icon = NULL;
  
  i = 0;
  tmp = tab_list;
  while (i < len)
    {
      MetaWindow *window;
1174 1175
      MetaRectangle r;
      
1176 1177
      window = tmp->data;
      
1178
      entries[i].key = (MetaTabEntryKey) window->xwindow;
1179 1180
      entries[i].title = window->title;
      entries[i].icon = window->icon;
1181
      entries[i].blank = FALSE;
1182
      entries[i].minimized = !meta_window_showing_on_its_workspace (window);
1183
      entries[i].demands_attention = window->wm_state_demands_attention;
1184
      
Havoc Pennington's avatar
Havoc Pennington committed
1185 1186 1187
      if (!window->minimized || !meta_window_get_icon_geometry (window, &r))
        meta_window_get_outer_rect (window, &r);
      
1188 1189 1190 1191
      entries[i].x = r.x;
      entries[i].y = r.y;
      entries[i].width = r.width;
      entries[i].height = r.height;
1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203