/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ /* * Copyright (C) 2001, 2002 Havoc Pennington * Copyright (C) 2002, 2003 Red Hat Inc. * Some ICCCM manager selection code derived from fvwm2, * Copyright (C) 2001 Dominik Vogt, Matthias Clasen, and fvwm2 team * Copyright (C) 2003 Rob Adams * Copyright (C) 2004-2006 Elijah Newren * * 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, see . */ /** * SECTION:screen * @title: MetaScreen * @short_description: Mutter X screen handler */ #include #include "screen-private.h" #include #include "util-private.h" #include #include "window-private.h" #include "frame.h" #include #include "workspace-private.h" #include "keybindings-private.h" #include "stack.h" #include #include "mutter-enum-types.h" #include "core.h" #include "meta-cursor-tracker-private.h" #include #include #include #include #include #include #include "x11/window-x11.h" #include "x11/xprops.h" static char* get_screen_name (MetaDisplay *display, int number); static void update_num_workspaces (MetaScreen *screen, guint32 timestamp); static void update_focus_mode (MetaScreen *screen); static void set_workspace_names (MetaScreen *screen); static void prefs_changed_callback (MetaPreference pref, gpointer data); static void set_desktop_geometry_hint (MetaScreen *screen); static void set_desktop_viewport_hint (MetaScreen *screen); #ifdef HAVE_STARTUP_NOTIFICATION static void meta_screen_sn_event (SnMonitorEvent *event, void *user_data); #endif static void on_monitors_changed (MetaMonitorManager *manager, MetaScreen *screen); enum { PROP_N_WORKSPACES = 1, }; enum { RESTACKED, WORKSPACE_ADDED, WORKSPACE_REMOVED, WORKSPACE_SWITCHED, WINDOW_ENTERED_MONITOR, WINDOW_LEFT_MONITOR, STARTUP_SEQUENCE_CHANGED, WORKAREAS_CHANGED, MONITORS_CHANGED, IN_FULLSCREEN_CHANGED, LAST_SIGNAL }; static guint screen_signals[LAST_SIGNAL] = { 0 }; G_DEFINE_TYPE (MetaScreen, meta_screen, G_TYPE_OBJECT); static void meta_screen_set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { #if 0 MetaScreen *screen = META_SCREEN (object); #endif switch (prop_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void meta_screen_get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { MetaScreen *screen = META_SCREEN (object); switch (prop_id) { case PROP_N_WORKSPACES: g_value_set_int (value, meta_screen_get_n_workspaces (screen)); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void meta_screen_finalize (GObject *object) { /* Actual freeing done in meta_screen_free() for now */ } static void meta_screen_class_init (MetaScreenClass *klass) { GObjectClass *object_class = G_OBJECT_CLASS (klass); GParamSpec *pspec; object_class->get_property = meta_screen_get_property; object_class->set_property = meta_screen_set_property; object_class->finalize = meta_screen_finalize; screen_signals[RESTACKED] = g_signal_new ("restacked", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (MetaScreenClass, restacked), NULL, NULL, NULL, G_TYPE_NONE, 0); pspec = g_param_spec_int ("n-workspaces", "N Workspaces", "Number of workspaces", 1, G_MAXINT, 1, G_PARAM_READABLE); screen_signals[WORKSPACE_ADDED] = g_signal_new ("workspace-added", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_INT); screen_signals[WORKSPACE_REMOVED] = g_signal_new ("workspace-removed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_INT); screen_signals[WORKSPACE_SWITCHED] = g_signal_new ("workspace-switched", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 3, G_TYPE_INT, G_TYPE_INT, META_TYPE_MOTION_DIRECTION); screen_signals[WINDOW_ENTERED_MONITOR] = g_signal_new ("window-entered-monitor", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_INT, META_TYPE_WINDOW); screen_signals[WINDOW_LEFT_MONITOR] = g_signal_new ("window-left-monitor", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 2, G_TYPE_INT, META_TYPE_WINDOW); screen_signals[STARTUP_SEQUENCE_CHANGED] = g_signal_new ("startup-sequence-changed", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 1, G_TYPE_POINTER); screen_signals[WORKAREAS_CHANGED] = g_signal_new ("workareas-changed", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (MetaScreenClass, workareas_changed), NULL, NULL, NULL, G_TYPE_NONE, 0); screen_signals[MONITORS_CHANGED] = g_signal_new ("monitors-changed", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (MetaScreenClass, monitors_changed), NULL, NULL, NULL, G_TYPE_NONE, 0); screen_signals[IN_FULLSCREEN_CHANGED] = g_signal_new ("in-fullscreen-changed", G_TYPE_FROM_CLASS (object_class), G_SIGNAL_RUN_LAST, 0, NULL, NULL, NULL, G_TYPE_NONE, 0); g_object_class_install_property (object_class, PROP_N_WORKSPACES, pspec); } static void meta_screen_init (MetaScreen *screen) { } static int set_wm_check_hint (MetaScreen *screen) { unsigned long data[1]; g_return_val_if_fail (screen->display->leader_window != None, 0); 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); return Success; } static void unset_wm_check_hint (MetaScreen *screen) { XDeleteProperty (screen->display->xdisplay, screen->xroot, screen->display->atom__NET_SUPPORTING_WM_CHECK); } static int set_supported_hint (MetaScreen *screen) { Atom atoms[] = { #define EWMH_ATOMS_ONLY #define item(x) screen->display->atom_##x, #include #undef item #undef EWMH_ATOMS_ONLY screen->display->atom__GTK_FRAME_EXTENTS, screen->display->atom__GTK_SHOW_WINDOW_MENU, }; XChangeProperty (screen->display->xdisplay, screen->xroot, screen->display->atom__NET_SUPPORTED, XA_ATOM, 32, PropModeReplace, (guchar*) atoms, G_N_ELEMENTS(atoms)); return Success; } static int set_wm_icon_size_hint (MetaScreen *screen) { #define N_VALS 6 gulong vals[N_VALS]; /* We've bumped the real icon size up to 96x96, but * we really should not add these sorts of constraints * on clients still using the legacy WM_HINTS interface. */ #define LEGACY_ICON_SIZE 32 /* min width, min height, max w, max h, width inc, height inc */ vals[0] = LEGACY_ICON_SIZE; vals[1] = LEGACY_ICON_SIZE; vals[2] = LEGACY_ICON_SIZE; vals[3] = LEGACY_ICON_SIZE; vals[4] = 0; vals[5] = 0; #undef LEGACY_ICON_SIZE 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 } static void meta_screen_ensure_xinerama_indices (MetaScreen *screen) { XineramaScreenInfo *infos; int n_infos, i, j; if (screen->has_xinerama_indices) return; screen->has_xinerama_indices = TRUE; if (!XineramaIsActive (screen->display->xdisplay)) return; infos = XineramaQueryScreens (screen->display->xdisplay, &n_infos); if (n_infos <= 0 || infos == NULL) { meta_XFree (infos); return; } for (i = 0; i < screen->n_monitor_infos; ++i) { for (j = 0; j < n_infos; ++j) { if (screen->monitor_infos[i].rect.x == infos[j].x_org && screen->monitor_infos[i].rect.y == infos[j].y_org && screen->monitor_infos[i].rect.width == infos[j].width && screen->monitor_infos[i].rect.height == infos[j].height) screen->monitor_infos[i].xinerama_index = j; } } meta_XFree (infos); } int meta_screen_monitor_index_to_xinerama_index (MetaScreen *screen, int index) { g_return_val_if_fail (index >= 0 && index < screen->n_monitor_infos, -1); meta_screen_ensure_xinerama_indices (screen); return screen->monitor_infos[index].xinerama_index; } int meta_screen_xinerama_index_to_monitor_index (MetaScreen *screen, int index) { int i; meta_screen_ensure_xinerama_indices (screen); for (i = 0; i < screen->n_monitor_infos; i++) if (screen->monitor_infos[i].xinerama_index == index) return i; return -1; } static void reload_monitor_infos (MetaScreen *screen) { GList *tmp; MetaMonitorManager *manager; tmp = screen->workspaces; while (tmp != NULL) { MetaWorkspace *space = tmp->data; meta_workspace_invalidate_work_area (space); tmp = tmp->next; } /* Any previous screen->monitor_infos or screen->outputs is freed by the caller */ screen->last_monitor_index = 0; screen->has_xinerama_indices = FALSE; screen->display->monitor_cache_invalidated = TRUE; manager = meta_monitor_manager_get (); screen->monitor_infos = meta_monitor_manager_get_monitor_infos (manager, (unsigned*)&screen->n_monitor_infos); screen->primary_monitor_index = meta_monitor_manager_get_primary_index (manager); } /* The guard window allows us to leave minimized windows mapped so * that compositor code may provide live previews of them. * Instead of being unmapped/withdrawn, they get pushed underneath * the guard window. We also select events on the guard window, which * should effectively be forwarded to events on the background actor, * providing that the scene graph is set up correctly. */ static Window create_guard_window (Display *xdisplay, MetaScreen *screen) { XSetWindowAttributes attributes; Window guard_window; gulong create_serial; MetaStackWindow stack_window; attributes.event_mask = NoEventMask; attributes.override_redirect = True; /* We have to call record_add() after we have the new window ID, * so save the serial for the CreateWindow request until then */ create_serial = XNextRequest(xdisplay); guard_window = XCreateWindow (xdisplay, screen->xroot, 0, /* x */ 0, /* y */ screen->rect.width, screen->rect.height, 0, /* border width */ 0, /* depth */ InputOnly, /* class */ CopyFromParent, /* visual */ CWEventMask|CWOverrideRedirect, &attributes); /* https://bugzilla.gnome.org/show_bug.cgi?id=710346 */ XStoreName (xdisplay, guard_window, "mutter guard window"); { unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 }; XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits }; XISetMask (mask.mask, XI_ButtonPress); XISetMask (mask.mask, XI_ButtonRelease); XISetMask (mask.mask, XI_Motion); XISelectEvents (xdisplay, guard_window, &mask, 1); } stack_window.any.type = META_WINDOW_CLIENT_TYPE_X11; stack_window.x11.xwindow = guard_window; meta_stack_tracker_record_add (screen->stack_tracker, &stack_window, create_serial); meta_stack_tracker_record_lower (screen->stack_tracker, &stack_window, XNextRequest (xdisplay)); XLowerWindow (xdisplay, guard_window); XMapWindow (xdisplay, guard_window); return guard_window; } /* Set a black background on the root window so that we don't * see confusing old copies of old windows when debugging * and testing. */ static void meta_screen_set_background (MetaScreen *screen) { XSetWindowBackground (screen->display->xdisplay, screen->xroot, BlackPixel); } MetaScreen* meta_screen_new (MetaDisplay *display, int number, guint32 timestamp) { MetaScreen *screen; Window xroot; Display *xdisplay; Window new_wm_sn_owner; Window current_wm_sn_owner; gboolean replace_current_wm; Atom wm_sn_atom; char buf[128]; guint32 manager_timestamp; MetaMonitorManager *manager; replace_current_wm = meta_get_replace_current_wm (); /* 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; } 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) { meta_warning (_("Screen %d on display \"%s\" already has a window manager; try using the --replace option to replace the current window manager.\n"), number, display->name); return NULL; } /* We want to find out when the current selection owner dies */ meta_error_trap_push (display); attrs.event_mask = StructureNotifyMask; XChangeWindowAttributes (xdisplay, current_wm_sn_owner, CWEventMask, &attrs); if (meta_error_trap_pop_with_return (display) != Success) current_wm_sn_owner = None; /* don't wait for it to die later on */ } /* We need SelectionClear and SelectionRequest events on the new_wm_sn_owner, * but those cannot be masked, so we only need NoEventMask. */ new_wm_sn_owner = meta_create_offscreen_window (xdisplay, xroot, NoEventMask); manager_timestamp = timestamp; 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 */ meta_error_trap_push (display); /* We need to or with the existing event mask since * gtk+ may be interested in other events. */ { long event_mask; unsigned char mask_bits[XIMaskLen (XI_LASTEVENT)] = { 0 }; XIEventMask mask = { XIAllMasterDevices, sizeof (mask_bits), mask_bits }; XWindowAttributes attr; meta_core_add_old_event_mask (xdisplay, xroot, &mask); XISetMask (mask.mask, XI_KeyPress); XISetMask (mask.mask, XI_KeyRelease); XISetMask (mask.mask, XI_Enter); XISetMask (mask.mask, XI_Leave); XISetMask (mask.mask, XI_FocusIn); XISetMask (mask.mask, XI_FocusOut); XISetMask (mask.mask, XI_Motion); #ifdef HAVE_XI23 if (META_DISPLAY_HAS_XINPUT_23 (display)) { XISetMask (mask.mask, XI_BarrierHit); XISetMask (mask.mask, XI_BarrierLeave); } #endif /* HAVE_XI23 */ XISelectEvents (xdisplay, xroot, &mask, 1); event_mask = (SubstructureRedirectMask | SubstructureNotifyMask | StructureNotifyMask | ColormapChangeMask | PropertyChangeMask); if (XGetWindowAttributes (xdisplay, xroot, &attr)) event_mask |= attr.your_event_mask; XSelectInput (xdisplay, xroot, event_mask); } if (meta_error_trap_pop_with_return (display) != Success) { meta_warning (_("Screen %d on display \"%s\" already has a window manager\n"), number, display->name); XDestroyWindow (xdisplay, new_wm_sn_owner); return NULL; } screen = g_object_new (META_TYPE_SCREEN, NULL); screen->closing = 0; screen->display = display; screen->number = number; screen->screen_name = get_screen_name (display, number); screen->xscreen = ScreenOfDisplay (xdisplay, number); screen->xroot = xroot; screen->rect.x = screen->rect.y = 0; manager = meta_monitor_manager_get (); g_signal_connect (manager, "monitors-changed", G_CALLBACK (on_monitors_changed), screen); meta_monitor_manager_get_screen_size (manager, &screen->rect.width, &screen->rect.height); screen->current_cursor = -1; /* invalid/unset */ screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen); screen->default_depth = DefaultDepthOfScreen (screen->xscreen); screen->wm_sn_selection_window = new_wm_sn_owner; screen->wm_sn_atom = wm_sn_atom; screen->wm_sn_timestamp = manager_timestamp; screen->wm_cm_selection_window = meta_create_offscreen_window (xdisplay, xroot, NoEventMask); screen->work_area_later = 0; screen->check_fullscreen_later = 0; screen->active_workspace = NULL; screen->workspaces = NULL; screen->rows_of_workspaces = 1; screen->columns_of_workspaces = -1; screen->vertical_workspaces = FALSE; screen->starting_corner = META_SCREEN_TOPLEFT; screen->guard_window = None; reload_monitor_infos (screen); meta_screen_set_cursor (screen, META_CURSOR_DEFAULT); meta_screen_set_background (screen); /* Handle creating a no_focus_window for this screen */ screen->no_focus_window = meta_create_offscreen_window (display->xdisplay, screen->xroot, FocusChangeMask|KeyPressMask|KeyReleaseMask); XMapWindow (display->xdisplay, screen->no_focus_window); /* Done with no_focus_window stuff */ set_wm_icon_size_hint (screen); set_supported_hint (screen); set_wm_check_hint (screen); set_desktop_viewport_hint (screen); set_desktop_geometry_hint (screen); meta_screen_update_workspace_layout (screen); /* Screens must have at least one workspace at all times, * so create that required workspace. */ meta_workspace_new (screen); screen->keys_grabbed = FALSE; meta_screen_grab_keys (screen); screen->ui = meta_ui_new (screen->display->xdisplay, screen->xscreen); screen->tile_preview_timeout_id = 0; screen->stack = meta_stack_new (screen); screen->stack_tracker = meta_stack_tracker_new (screen); meta_prefs_add_listener (prefs_changed_callback, screen); #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 meta_verbose ("Added screen %d ('%s') root 0x%lx\n", screen->number, screen->screen_name, screen->xroot); return screen; } void meta_screen_init_workspaces (MetaScreen *screen) { MetaWorkspace *current_workspace; gulong current_workspace_index = 0; guint32 timestamp; g_return_if_fail (META_IS_SCREEN (screen)); timestamp = screen->wm_sn_timestamp; /* Get current workspace */ if (meta_prop_get_cardinal (screen->display, screen->xroot, screen->display->atom__NET_CURRENT_DESKTOP, ¤t_workspace_index)) meta_verbose ("Read existing _NET_CURRENT_DESKTOP = %d\n", (int) current_workspace_index); else meta_verbose ("No _NET_CURRENT_DESKTOP present\n"); meta_workspace_activate (screen->workspaces->data, timestamp); update_num_workspaces (screen, timestamp); set_workspace_names (screen); /* Switch to the _NET_CURRENT_DESKTOP workspace */ current_workspace = meta_screen_get_workspace_by_index (screen, current_workspace_index); if (current_workspace != NULL) meta_workspace_activate (current_workspace, timestamp); } void meta_screen_free (MetaScreen *screen, guint32 timestamp) { MetaDisplay *display; display = screen->display; screen->closing += 1; meta_display_grab (display); meta_compositor_unmanage (screen->display->compositor); meta_display_unmanage_windows_for_screen (display, screen, timestamp); meta_prefs_remove_listener (prefs_changed_callback, screen); meta_screen_ungrab_keys (screen); #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 meta_ui_free (screen->ui); meta_stack_free (screen->stack); meta_stack_tracker_free (screen->stack_tracker); meta_error_trap_push (screen->display); XSelectInput (screen->display->xdisplay, screen->xroot, 0); if (meta_error_trap_pop_with_return (screen->display) != Success) meta_warning ("Could not release screen %d on display \"%s\"\n", screen->number, screen->display->name); unset_wm_check_hint (screen); XDestroyWindow (screen->display->xdisplay, screen->wm_sn_selection_window); if (screen->work_area_later != 0) meta_later_remove (screen->work_area_later); if (screen->check_fullscreen_later != 0) meta_later_remove (screen->check_fullscreen_later); if (screen->monitor_infos) g_free (screen->monitor_infos); if (screen->tile_preview_timeout_id) g_source_remove (screen->tile_preview_timeout_id); g_free (screen->screen_name); g_object_unref (screen); XFlush (display->xdisplay); meta_display_ungrab (display); } void meta_screen_create_guard_window (MetaScreen *screen) { if (screen->guard_window == None) screen->guard_window = create_guard_window (screen->display->xdisplay, screen); } void meta_screen_manage_all_windows (MetaScreen *screen) { MetaStackWindow *_children; MetaStackWindow *children; int n_children, i; meta_stack_freeze (screen->stack); meta_stack_tracker_get_stack (screen->stack_tracker, &_children, &n_children); /* Copy the stack as it will be modified as part of the loop */ children = g_memdup (_children, sizeof (MetaStackWindow) * n_children); for (i = 0; i < n_children; ++i) { meta_window_x11_new (screen->display, children[i].x11.xwindow, TRUE, META_COMP_EFFECT_NONE); } g_free (children); meta_stack_thaw (screen->stack); } static void prefs_changed_callback (MetaPreference pref, gpointer data) { MetaScreen *screen = data; if ((pref == META_PREF_NUM_WORKSPACES || pref == META_PREF_DYNAMIC_WORKSPACES) && !meta_prefs_get_dynamic_workspaces ()) { /* GSettings doesn't provide timestamps, but luckily update_num_workspaces * often doesn't need it... */ guint32 timestamp = meta_display_get_current_time_roundtrip (screen->display); update_num_workspaces (screen, timestamp); } else if (pref == META_PREF_FOCUS_MODE) { update_focus_mode (screen); } else if (pref == META_PREF_WORKSPACE_NAMES) { set_workspace_names (screen); } } 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; } 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); } /** * meta_screen_foreach_window: * @screen: a #MetaScreen * @func: function to call for each window * @data: user data to pass to @func * * Calls the specified function for each window on the screen, * ignoring override-redirect windows. */ 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->xids, 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 (META_IS_WINDOW (window) && window->screen == screen && !window->override_redirect) (* func) (screen, window, data); } tmp = tmp->next; } g_slist_free (winlist); } int meta_screen_get_n_workspaces (MetaScreen *screen) { return g_list_length (screen->workspaces); } /** * meta_screen_get_workspace_by_index: * @screen: a #MetaScreen * @index: index of one of the screen's workspaces * * Gets the workspace object for one of a screen's workspaces given the workspace * index. It's valid to call this function with an out-of-range index and it * will robustly return %NULL. * * Return value: (transfer none): the workspace object with specified index, or %NULL * if the index is out of range. */ MetaWorkspace* meta_screen_get_workspace_by_index (MetaScreen *screen, int idx) { GList *tmp; int i; /* should be robust, idx is maybe from an app */ if (idx < 0) return NULL; i = 0; tmp = screen->workspaces; while (tmp != NULL) { MetaWorkspace *w = tmp->data; if (i == idx) return w; ++i; tmp = tmp->next; } return NULL; } static void set_number_of_spaces_hint (MetaScreen *screen, int n_spaces) { unsigned long data[1]; if (screen->closing > 0) return; data[0] = n_spaces; meta_verbose ("Setting _NET_NUMBER_OF_DESKTOPS to %lu\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); meta_error_trap_pop (screen->display); } static void set_desktop_geometry_hint (MetaScreen *screen) { unsigned long data[2]; if (screen->closing > 0) return; data[0] = screen->rect.width; data[1] = screen->rect.height; meta_verbose ("Setting _NET_DESKTOP_GEOMETRY to %lu, %lu\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); } static void set_desktop_viewport_hint (MetaScreen *screen) { unsigned long data[2]; if (screen->closing > 0) return; /* * Mutter 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); } void meta_screen_remove_workspace (MetaScreen *screen, MetaWorkspace *workspace, guint32 timestamp) { GList *l; MetaWorkspace *neighbour = NULL; GList *next = NULL; int index; gboolean active_index_changed; int new_num; l = screen->workspaces; while (l) { MetaWorkspace *w = l->data; if (w == workspace) { if (l->next) next = l->next; if (l->prev) neighbour = l->prev->data; else if (l->next) neighbour = l->next->data; else { /* Cannot remove the only workspace! */ return; } break; } l = l->next; } if (!neighbour) return; meta_workspace_relocate_windows (workspace, neighbour); if (workspace == screen->active_workspace) meta_workspace_activate (neighbour, timestamp); /* To emit the signal after removing the workspace */ index = meta_workspace_index (workspace); active_index_changed = index < meta_screen_get_active_workspace_index (screen); /* This also removes the workspace from the screens list */ meta_workspace_remove (workspace); new_num = g_list_length (screen->workspaces); set_number_of_spaces_hint (screen, new_num); if (!meta_prefs_get_dynamic_workspaces ()) meta_prefs_set_num_workspaces (new_num); /* If deleting a workspace before the current workspace, the active * workspace index changes, so we need to update that hint */ if (active_index_changed) meta_screen_set_active_workspace_hint (screen); l = next; while (l) { MetaWorkspace *w = l->data; meta_workspace_update_window_hints (w); l = l->next; } meta_screen_queue_workarea_recalc (screen); g_signal_emit (screen, screen_signals[WORKSPACE_REMOVED], 0, index); g_object_notify (G_OBJECT (screen), "n-workspaces"); } /** * meta_screen_append_new_workspace: * @screen: a #MetaScreen * @activate: %TRUE if the workspace should be switched to after creation * @timestamp: if switching to a new workspace, timestamp to be used when * focusing a window on the new workspace. (Doesn't hurt to pass a valid * timestamp when available even if not switching workspaces.) * * Append a new workspace to the screen and (optionally) switch to that * screen. * * Return value: (transfer none): the newly appended workspace. */ MetaWorkspace * meta_screen_append_new_workspace (MetaScreen *screen, gboolean activate, guint32 timestamp) { MetaWorkspace *w; int new_num; /* This also adds the workspace to the screen list */ w = meta_workspace_new (screen); if (!w) return NULL; if (activate) meta_workspace_activate (w, timestamp); new_num = g_list_length (screen->workspaces); set_number_of_spaces_hint (screen, new_num); if (!meta_prefs_get_dynamic_workspaces ()) meta_prefs_set_num_workspaces (new_num); meta_screen_queue_workarea_recalc (screen); g_signal_emit (screen, screen_signals[WORKSPACE_ADDED], 0, meta_workspace_index (w)); g_object_notify (G_OBJECT (screen), "n-workspaces"); return w; } static void update_num_workspaces (MetaScreen *screen, guint32 timestamp) { int new_num, old_num; GList *tmp; int i; GList *extras; MetaWorkspace *last_remaining; gboolean need_change_space; if (meta_prefs_get_dynamic_workspaces ()) { int n_items; gulong *list; n_items = 0; list = NULL; if (meta_prop_get_cardinal_list (screen->display, screen->xroot, screen->display->atom__NET_NUMBER_OF_DESKTOPS, &list, &n_items)) { new_num = list[0]; meta_XFree (list); } else { new_num = 1; } } else { new_num = meta_prefs_get_num_workspaces (); } g_assert (new_num > 0); if (g_list_length (screen->workspaces) == (guint) new_num) return; last_remaining = NULL; extras = NULL; i = 0; tmp = screen->workspaces; while (tmp != NULL) { MetaWorkspace *w = tmp->data; if (i >= new_num) extras = g_list_prepend (extras, w); else last_remaining = w; ++i; tmp = tmp->next; } old_num = i; 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, timestamp); /* Should now be safe to free the workspaces */ tmp = extras; while (tmp != NULL) { MetaWorkspace *w = tmp->data; g_assert (w->windows == NULL); meta_workspace_remove (w); tmp = tmp->next; } g_list_free (extras); for (i = old_num; i < new_num; i++) meta_workspace_new (screen); set_number_of_spaces_hint (screen, new_num); meta_screen_queue_workarea_recalc (screen); for (i = old_num; i < new_num; i++) g_signal_emit (screen, screen_signals[WORKSPACE_ADDED], 0, i); g_object_notify (G_OBJECT (screen), "n-workspaces"); } static void update_focus_mode (MetaScreen *screen) { /* nothing to do anymore */ ; } void meta_screen_update_cursor (MetaScreen *screen) { MetaDisplay *display = screen->display; MetaCursor cursor = screen->current_cursor; Cursor xcursor; MetaCursorReference *cursor_ref; MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (screen); cursor_ref = meta_cursor_reference_from_theme (cursor); meta_cursor_tracker_set_root_cursor (tracker, cursor_ref); if (cursor_ref) meta_cursor_reference_unref (cursor_ref); /* Set a cursor for X11 applications that don't specify their own */ xcursor = meta_display_create_x_cursor (display, cursor); XDefineCursor (display->xdisplay, screen->xroot, xcursor); XFlush (display->xdisplay); XFreeCursor (display->xdisplay, xcursor); } void meta_screen_set_cursor (MetaScreen *screen, MetaCursor cursor) { if (cursor == screen->current_cursor) return; screen->current_cursor = cursor; meta_screen_update_cursor (screen); } static gboolean meta_screen_update_tile_preview_timeout (gpointer data) { MetaScreen *screen = data; MetaWindow *window = screen->display->grab_window; gboolean needs_preview = FALSE; screen->tile_preview_timeout_id = 0; if (window) { switch (window->tile_mode) { case META_TILE_LEFT: case META_TILE_RIGHT: if (!META_WINDOW_TILED_SIDE_BY_SIDE (window)) needs_preview = TRUE; break; case META_TILE_MAXIMIZED: if (!META_WINDOW_MAXIMIZED (window)) needs_preview = TRUE; break; default: needs_preview = FALSE; break; } } if (needs_preview) { MetaRectangle tile_rect; int monitor; monitor = meta_window_get_current_tile_monitor_number (window); meta_window_get_current_tile_area (window, &tile_rect); meta_compositor_show_tile_preview (screen->display->compositor, window, &tile_rect, monitor); } else meta_compositor_hide_tile_preview (screen->display->compositor); return FALSE; } #define TILE_PREVIEW_TIMEOUT_MS 200 void meta_screen_update_tile_preview (MetaScreen *screen, gboolean delay) { if (delay) { if (screen->tile_preview_timeout_id > 0) return; screen->tile_preview_timeout_id = g_timeout_add (TILE_PREVIEW_TIMEOUT_MS, meta_screen_update_tile_preview_timeout, screen); g_source_set_name_by_id (screen->tile_preview_timeout_id, "[mutter] meta_screen_update_tile_preview_timeout"); } else { if (screen->tile_preview_timeout_id > 0) g_source_remove (screen->tile_preview_timeout_id); meta_screen_update_tile_preview_timeout ((gpointer)screen); } } void meta_screen_hide_tile_preview (MetaScreen *screen) { if (screen->tile_preview_timeout_id > 0) g_source_remove (screen->tile_preview_timeout_id); meta_compositor_hide_tile_preview (screen->display->compositor); } MetaWindow* meta_screen_get_mouse_window (MetaScreen *screen, MetaWindow *not_this_one) { MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (screen); MetaWindow *window; int x, y; if (not_this_one) meta_topic (META_DEBUG_FOCUS, "Focusing mouse window excluding %s\n", not_this_one->desc); meta_cursor_tracker_get_pointer (tracker, &x, &y, NULL); window = meta_stack_get_default_focus_window_at_point (screen->stack, screen->active_workspace, not_this_one, x, y); return window; } const MetaMonitorInfo* meta_screen_get_monitor_for_rect (MetaScreen *screen, MetaRectangle *rect) { int i; int best_monitor, monitor_score, rect_area; if (screen->n_monitor_infos == 1) return &screen->monitor_infos[0]; best_monitor = 0; monitor_score = -1; rect_area = meta_rectangle_area (rect); for (i = 0; i < screen->n_monitor_infos; i++) { gboolean result; int cur; if (rect_area > 0) { MetaRectangle dest; result = meta_rectangle_intersect (&screen->monitor_infos[i].rect, rect, &dest); cur = meta_rectangle_area (&dest); } else { result = meta_rectangle_contains_rect (&screen->monitor_infos[i].rect, rect); cur = rect_area; } if (result && cur > monitor_score) { monitor_score = cur; best_monitor = i; } } return &screen->monitor_infos[best_monitor]; } const MetaMonitorInfo* meta_screen_get_monitor_for_window (MetaScreen *screen, MetaWindow *window) { MetaRectangle window_rect; meta_window_get_frame_rect (window, &window_rect); return meta_screen_get_monitor_for_rect (screen, &window_rect); } int meta_screen_get_monitor_index_for_rect (MetaScreen *screen, MetaRectangle *rect) { const MetaMonitorInfo *monitor = meta_screen_get_monitor_for_rect (screen, rect); return monitor->number; } const MetaMonitorInfo* meta_screen_get_monitor_neighbor (MetaScreen *screen, int which_monitor, MetaScreenDirection direction) { MetaMonitorInfo* input = screen->monitor_infos + which_monitor; MetaMonitorInfo* current; int i; for (i = 0; i < screen->n_monitor_infos; i++) { current = screen->monitor_infos + i; if ((direction == META_SCREEN_RIGHT && current->rect.x == input->rect.x + input->rect.width && meta_rectangle_vert_overlap(¤t->rect, &input->rect)) || (direction == META_SCREEN_LEFT && input->rect.x == current->rect.x + current->rect.width && meta_rectangle_vert_overlap(¤t->rect, &input->rect)) || (direction == META_SCREEN_UP && input->rect.y == current->rect.y + current->rect.height && meta_rectangle_horiz_overlap(¤t->rect, &input->rect)) || (direction == META_SCREEN_DOWN && current->rect.y == input->rect.y + input->rect.height && meta_rectangle_horiz_overlap(¤t->rect, &input->rect))) { return current; } } return NULL; } void meta_screen_get_natural_monitor_list (MetaScreen *screen, int** monitors_list, int* n_monitors) { const MetaMonitorInfo* current; const MetaMonitorInfo* tmp; GQueue* monitor_queue; int* visited; int cur = 0; int i; *n_monitors = screen->n_monitor_infos; *monitors_list = g_new (int, screen->n_monitor_infos); /* we calculate a natural ordering by which to choose monitors for * window placement. We start at the current monitor, and perform * a breadth-first search of the monitors starting from that * monitor. We choose preferentially left, then right, then down, * then up. The visitation order produced by this traversal is the * natural monitor ordering. */ visited = g_new (int, screen->n_monitor_infos); for (i = 0; i < screen->n_monitor_infos; i++) { visited[i] = FALSE; } current = meta_screen_get_current_monitor_info (screen); monitor_queue = g_queue_new (); g_queue_push_tail (monitor_queue, (gpointer) current); visited[current->number] = TRUE; while (!g_queue_is_empty (monitor_queue)) { current = (const MetaMonitorInfo*) g_queue_pop_head (monitor_queue); (*monitors_list)[cur++] = current->number; /* enqueue each of the directions */ tmp = meta_screen_get_monitor_neighbor (screen, current->number, META_SCREEN_LEFT); if (tmp && !visited[tmp->number]) { g_queue_push_tail (monitor_queue, (MetaMonitorInfo*) tmp); visited[tmp->number] = TRUE; } tmp = meta_screen_get_monitor_neighbor (screen, current->number, META_SCREEN_RIGHT); if (tmp && !visited[tmp->number]) { g_queue_push_tail (monitor_queue, (MetaMonitorInfo*) tmp); visited[tmp->number] = TRUE; } tmp = meta_screen_get_monitor_neighbor (screen, current->number, META_SCREEN_UP); if (tmp && !visited[tmp->number]) { g_queue_push_tail (monitor_queue, (MetaMonitorInfo*) tmp); visited[tmp->number] = TRUE; } tmp = meta_screen_get_monitor_neighbor (screen, current->number, META_SCREEN_DOWN); if (tmp && !visited[tmp->number]) { g_queue_push_tail (monitor_queue, (MetaMonitorInfo*) tmp); visited[tmp->number] = TRUE; } } /* in case we somehow missed some set of monitors, go through the * visited list and add in any monitors that were missed */ for (i = 0; i < screen->n_monitor_infos; i++) { if (visited[i] == FALSE) { (*monitors_list)[cur++] = i; } } g_free (visited); g_queue_free (monitor_queue); } const MetaMonitorInfo* meta_screen_get_current_monitor_info (MetaScreen *screen) { int monitor_index; monitor_index = meta_screen_get_current_monitor (screen); return &screen->monitor_infos[monitor_index]; } const MetaMonitorInfo* meta_screen_get_current_monitor_info_for_pos (MetaScreen *screen, int x, int y) { int monitor_index; monitor_index = meta_screen_get_current_monitor_for_pos (screen, x, y); return &screen->monitor_infos[monitor_index]; } /** * meta_screen_get_current_monitor_for_pos: * @screen: a #MetaScreen * @x: The x coordinate * @y: The y coordinate * * Gets the index of the monitor that contains the passed coordinates. * * Return value: a monitor index */ int meta_screen_get_current_monitor_for_pos (MetaScreen *screen, int x, int y) { if (screen->n_monitor_infos == 1) return 0; else if (screen->display->monitor_cache_invalidated) { int i; MetaRectangle pointer_position; pointer_position.x = x; pointer_position.y = y; pointer_position.width = pointer_position.height = 1; screen->display->monitor_cache_invalidated = FALSE; screen->last_monitor_index = 0; for (i = 0; i < screen->n_monitor_infos; i++) { if (meta_rectangle_contains_rect (&screen->monitor_infos[i].rect, &pointer_position)) { screen->last_monitor_index = i; break; } } meta_topic (META_DEBUG_XINERAMA, "Rechecked current monitor, now %d\n", screen->last_monitor_index); } return screen->last_monitor_index; } /** * meta_screen_get_current_monitor: * @screen: a #MetaScreen * * Gets the index of the monitor that currently has the mouse pointer. * * Return value: a monitor index */ int meta_screen_get_current_monitor (MetaScreen *screen) { MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (screen); if (screen->n_monitor_infos == 1) return 0; /* Sadly, we have to do it this way. Yuck. */ if (screen->display->monitor_cache_invalidated) { int x, y; meta_cursor_tracker_get_pointer (tracker, &x, &y, NULL); meta_screen_get_current_monitor_for_pos (screen, x, y); } return screen->last_monitor_index; } /** * meta_screen_get_n_monitors: * @screen: a #MetaScreen * * Gets the number of monitors that are joined together to form @screen. * * Return value: the number of monitors */ int meta_screen_get_n_monitors (MetaScreen *screen) { g_return_val_if_fail (META_IS_SCREEN (screen), 0); return screen->n_monitor_infos; } /** * meta_screen_get_primary_monitor: * @screen: a #MetaScreen * * Gets the index of the primary monitor on this @screen. * * Return value: a monitor index */ int meta_screen_get_primary_monitor (MetaScreen *screen) { g_return_val_if_fail (META_IS_SCREEN (screen), 0); return screen->primary_monitor_index; } /** * meta_screen_get_monitor_geometry: * @screen: a #MetaScreen * @monitor: the monitor number * @geometry: (out): location to store the monitor geometry * * Stores the location and size of the indicated monitor in @geometry. */ void meta_screen_get_monitor_geometry (MetaScreen *screen, int monitor, MetaRectangle *geometry) { g_return_if_fail (META_IS_SCREEN (screen)); g_return_if_fail (monitor >= 0 && monitor < screen->n_monitor_infos); g_return_if_fail (geometry != NULL); *geometry = screen->monitor_infos[monitor].rect; } #define _NET_WM_ORIENTATION_HORZ 0 #define _NET_WM_ORIENTATION_VERT 1 #define _NET_WM_TOPLEFT 0 #define _NET_WM_TOPRIGHT 1 #define _NET_WM_BOTTOMRIGHT 2 #define _NET_WM_BOTTOMLEFT 3 void meta_screen_update_workspace_layout (MetaScreen *screen) { gulong *list; int n_items; if (screen->workspace_layout_overridden) return; list = NULL; n_items = 0; if (meta_prop_get_cardinal_list (screen->display, screen->xroot, screen->display->atom__NET_DESKTOP_LAYOUT, &list, &n_items)) { if (n_items == 3 || n_items == 4) { int cols, rows; switch (list[0]) { case _NET_WM_ORIENTATION_HORZ: screen->vertical_workspaces = FALSE; break; case _NET_WM_ORIENTATION_VERT: screen->vertical_workspaces = TRUE; break; default: meta_warning ("Someone set a weird orientation in _NET_DESKTOP_LAYOUT\n"); break; } cols = list[1]; rows = list[2]; if (rows <= 0 && cols <= 0) { meta_warning ("Columns = %d rows = %d in _NET_DESKTOP_LAYOUT makes no sense\n", rows, cols); } else { if (rows > 0) screen->rows_of_workspaces = rows; else screen->rows_of_workspaces = -1; if (cols > 0) screen->columns_of_workspaces = cols; else screen->columns_of_workspaces = -1; } if (n_items == 4) { switch (list[3]) { case _NET_WM_TOPLEFT: screen->starting_corner = META_SCREEN_TOPLEFT; break; case _NET_WM_TOPRIGHT: screen->starting_corner = META_SCREEN_TOPRIGHT; break; case _NET_WM_BOTTOMRIGHT: screen->starting_corner = META_SCREEN_BOTTOMRIGHT; break; case _NET_WM_BOTTOMLEFT: screen->starting_corner = META_SCREEN_BOTTOMLEFT; break; default: meta_warning ("Someone set a weird starting corner in _NET_DESKTOP_LAYOUT\n"); break; } } else screen->starting_corner = META_SCREEN_TOPLEFT; } else { meta_warning ("Someone set _NET_DESKTOP_LAYOUT to %d integers instead of 4 " "(3 is accepted for backwards compat)\n", n_items); } meta_XFree (list); } meta_verbose ("Workspace layout rows = %d cols = %d orientation = %d starting corner = %u\n", screen->rows_of_workspaces, screen->columns_of_workspaces, screen->vertical_workspaces, screen->starting_corner); } /** * meta_screen_override_workspace_layout: * @screen: a #MetaScreen * @starting_corner: the corner at which the first workspace is found * @vertical_layout: if %TRUE the workspaces are laid out in columns rather than rows * @n_rows: number of rows of workspaces, or -1 to determine the number of rows from * @n_columns and the total number of workspaces * @n_columns: number of columns of workspaces, or -1 to determine the number of columns from * @n_rows and the total number of workspaces * * Explicitly set the layout of workspaces. Once this has been called, the contents of the * _NET_DESKTOP_LAYOUT property on the root window are completely ignored. */ void meta_screen_override_workspace_layout (MetaScreen *screen, MetaScreenCorner starting_corner, gboolean vertical_layout, int n_rows, int n_columns) { g_return_if_fail (META_IS_SCREEN (screen)); g_return_if_fail (n_rows > 0 || n_columns > 0); g_return_if_fail (n_rows != 0 && n_columns != 0); screen->workspace_layout_overridden = TRUE; screen->vertical_workspaces = vertical_layout != FALSE; screen->starting_corner = starting_corner; screen->rows_of_workspaces = n_rows; screen->columns_of_workspaces = n_columns; /* In theory we should remove _NET_DESKTOP_LAYOUT from _NET_SUPPORTED at this * point, but it's unlikely that anybody checks that, and it's unlikely that * anybody who checks that handles changes, so we'd probably just create * a race condition. And it's hard to implement with the code in set_supported_hint() */ } static void set_workspace_names (MetaScreen *screen) { /* This updates names on root window when the pref changes, * note we only get prefs change notify if things have * really changed. */ GString *flattened; int i; int n_spaces; /* flatten to nul-separated list */ n_spaces = meta_screen_get_n_workspaces (screen); flattened = g_string_new (""); i = 0; while (i < n_spaces) { const char *name; name = meta_prefs_get_workspace_name (i); if (name) g_string_append_len (flattened, name, strlen (name) + 1); else g_string_append_len (flattened, "", 1); ++i; } meta_error_trap_push (screen->display); XChangeProperty (screen->display->xdisplay, screen->xroot, screen->display->atom__NET_DESKTOP_NAMES, screen->display->atom_UTF8_STRING, 8, PropModeReplace, (unsigned char *)flattened->str, flattened->len); meta_error_trap_pop (screen->display); g_string_free (flattened, TRUE); } void meta_screen_update_workspace_names (MetaScreen *screen) { char **names; int n_names; int i; /* this updates names in prefs when the root window property changes, * iff the new property contents don't match what's already in prefs */ names = NULL; n_names = 0; if (!meta_prop_get_utf8_list (screen->display, screen->xroot, screen->display->atom__NET_DESKTOP_NAMES, &names, &n_names)) { meta_verbose ("Failed to get workspace names from root window %d\n", screen->number); return; } i = 0; while (i < n_names) { meta_topic (META_DEBUG_PREFS, "Setting workspace %d name to \"%s\" due to _NET_DESKTOP_NAMES change\n", i, names[i] ? names[i] : "null"); meta_prefs_change_workspace_name (i, names[i]); ++i; } g_strfreev (names); } Window meta_create_offscreen_window (Display *xdisplay, Window parent, long valuemask) { XSetWindowAttributes attrs; /* we want to be override redirect because sometimes we * create a window on a screen we aren't managing. * (but on a display we are managing at least one screen for) */ attrs.override_redirect = True; attrs.event_mask = valuemask; return XCreateWindow (xdisplay, parent, -100, -100, 1, 1, 0, CopyFromParent, CopyFromParent, (Visual *)CopyFromParent, CWOverrideRedirect | CWEventMask, &attrs); } static void set_work_area_hint (MetaScreen *screen) { int num_workspaces; GList *tmp_list; unsigned long *data, *tmp; MetaRectangle area; num_workspaces = meta_screen_get_n_workspaces (screen); data = g_new (unsigned long, num_workspaces * 4); tmp_list = screen->workspaces; tmp = data; while (tmp_list != NULL) { MetaWorkspace *workspace = tmp_list->data; if (workspace->screen == screen) { meta_workspace_get_work_area_all_monitors (workspace, &area); tmp[0] = area.x; tmp[1] = area.y; tmp[2] = area.width; tmp[3] = area.height; tmp += 4; } tmp_list = tmp_list->next; } meta_error_trap_push (screen->display); XChangeProperty (screen->display->xdisplay, screen->xroot, screen->display->atom__NET_WORKAREA, XA_CARDINAL, 32, PropModeReplace, (guchar*) data, num_workspaces*4); g_free (data); meta_error_trap_pop (screen->display); g_signal_emit (screen, screen_signals[WORKAREAS_CHANGED], 0); } static gboolean set_work_area_later_func (MetaScreen *screen) { meta_topic (META_DEBUG_WORKAREA, "Running work area hint computation function\n"); screen->work_area_later = 0; set_work_area_hint (screen); return FALSE; } void meta_screen_queue_workarea_recalc (MetaScreen *screen) { /* Recompute work area later before redrawing */ if (screen->work_area_later == 0) { meta_topic (META_DEBUG_WORKAREA, "Adding work area hint computation function\n"); screen->work_area_later = meta_later_add (META_LATER_BEFORE_REDRAW, (GSourceFunc) set_work_area_later_func, screen, NULL); } } #ifdef WITH_VERBOSE_MODE static char * meta_screen_corner_to_string (MetaScreenCorner corner) { switch (corner) { case META_SCREEN_TOPLEFT: return "TopLeft"; case META_SCREEN_TOPRIGHT: return "TopRight"; case META_SCREEN_BOTTOMLEFT: return "BottomLeft"; case META_SCREEN_BOTTOMRIGHT: return "BottomRight"; } return "Unknown"; } #endif /* WITH_VERBOSE_MODE */ void meta_screen_calc_workspace_layout (MetaScreen *screen, int num_workspaces, int current_space, MetaWorkspaceLayout *layout) { int rows, cols; int grid_area; int *grid; int i, r, c; int current_row, current_col; rows = screen->rows_of_workspaces; cols = screen->columns_of_workspaces; if (rows <= 0 && cols <= 0) cols = num_workspaces; if (rows <= 0) rows = num_workspaces / cols + ((num_workspaces % cols) > 0 ? 1 : 0); if (cols <= 0) cols = num_workspaces / rows + ((num_workspaces % rows) > 0 ? 1 : 0); /* paranoia */ if (rows < 1) rows = 1; if (cols < 1) cols = 1; g_assert (rows != 0 && cols != 0); grid_area = rows * cols; meta_verbose ("Getting layout rows = %d cols = %d current = %d " "num_spaces = %d vertical = %s corner = %s\n", rows, cols, current_space, num_workspaces, screen->vertical_workspaces ? "(true)" : "(false)", meta_screen_corner_to_string (screen->starting_corner)); /* ok, we want to setup the distances in the workspace array to go * in each direction. Remember, there are many ways that a workspace * array can be setup. * see http://www.freedesktop.org/standards/wm-spec/1.2/html/x109.html * and look at the _NET_DESKTOP_LAYOUT section for details. * For instance: */ /* starting_corner = META_SCREEN_TOPLEFT * vertical_workspaces = 0 vertical_workspaces=1 * 1234 1357 * 5678 2468 * * starting_corner = META_SCREEN_TOPRIGHT * vertical_workspaces = 0 vertical_workspaces=1 * 4321 7531 * 8765 8642 * * starting_corner = META_SCREEN_BOTTOMLEFT * vertical_workspaces = 0 vertical_workspaces=1 * 5678 2468 * 1234 1357 * * starting_corner = META_SCREEN_BOTTOMRIGHT * vertical_workspaces = 0 vertical_workspaces=1 * 8765 8642 * 4321 7531 * */ /* keep in mind that we could have a ragged layout, e.g. the "8" * in the above grids could be missing */ grid = g_new (int, grid_area); current_row = -1; current_col = -1; i = 0; switch (screen->starting_corner) { case META_SCREEN_TOPLEFT: if (screen->vertical_workspaces) { c = 0; while (c < cols) { r = 0; while (r < rows) { grid[r*cols+c] = i; ++i; ++r; } ++c; } } else { r = 0; while (r < rows) { c = 0; while (c < cols) { grid[r*cols+c] = i; ++i; ++c; } ++r; } } break; case META_SCREEN_TOPRIGHT: if (screen->vertical_workspaces) { c = cols - 1; while (c >= 0) { r = 0; while (r < rows) { grid[r*cols+c] = i; ++i; ++r; } --c; } } else { r = 0; while (r < rows) { c = cols - 1; while (c >= 0) { grid[r*cols+c] = i; ++i; --c; } ++r; } } break; case META_SCREEN_BOTTOMLEFT: if (screen->vertical_workspaces) { c = 0; while (c < cols) { r = rows - 1; while (r >= 0) { grid[r*cols+c] = i; ++i; --r; } ++c; } } else { r = rows - 1; while (r >= 0) { c = 0; while (c < cols) { grid[r*cols+c] = i; ++i; ++c; } --r; } } break; case META_SCREEN_BOTTOMRIGHT: if (screen->vertical_workspaces) { c = cols - 1; while (c >= 0) { r = rows - 1; while (r >= 0) { grid[r*cols+c] = i; ++i; --r; } --c; } } else { r = rows - 1; while (r >= 0) { c = cols - 1; while (c >= 0) { grid[r*cols+c] = i; ++i; --c; } --r; } } break; } if (i != grid_area) meta_bug ("did not fill in the whole workspace grid in %s (%d filled)\n", G_STRFUNC, i); current_row = 0; current_col = 0; r = 0; while (r < rows) { c = 0; while (c < cols) { if (grid[r*cols+c] == current_space) { current_row = r; current_col = c; } else if (grid[r*cols+c] >= num_workspaces) { /* flag nonexistent spaces with -1 */ grid[r*cols+c] = -1; } ++c; } ++r; } layout->rows = rows; layout->cols = cols; layout->grid = grid; layout->grid_area = grid_area; layout->current_row = current_row; layout->current_col = current_col; #ifdef WITH_VERBOSE_MODE if (meta_is_verbose ()) { r = 0; while (r < layout->rows) { meta_verbose (" "); meta_push_no_msg_prefix (); c = 0; while (c < layout->cols) { if (r == layout->current_row && c == layout->current_col) meta_verbose ("*%2d ", layout->grid[r*layout->cols+c]); else meta_verbose ("%3d ", layout->grid[r*layout->cols+c]); ++c; } meta_verbose ("\n"); meta_pop_no_msg_prefix (); ++r; } } #endif /* WITH_VERBOSE_MODE */ } void meta_screen_free_workspace_layout (MetaWorkspaceLayout *layout) { g_free (layout->grid); } static void meta_screen_resize_func (MetaScreen *screen, MetaWindow *window, void *user_data) { if (window->struts) { meta_window_update_struts (window); } meta_window_queue (window, META_QUEUE_MOVE_RESIZE); meta_window_recalc_features (window); } static void on_monitors_changed (MetaMonitorManager *manager, MetaScreen *screen) { GSList *tmp, *windows; meta_monitor_manager_get_screen_size (manager, &screen->rect.width, &screen->rect.height); reload_monitor_infos (screen); set_desktop_geometry_hint (screen); /* Resize the guard window to fill the screen again. */ if (screen->guard_window != None) { XWindowChanges changes; changes.x = 0; changes.y = 0; changes.width = screen->rect.width; changes.height = screen->rect.height; XConfigureWindow(screen->display->xdisplay, screen->guard_window, CWX | CWY | CWWidth | CWHeight, &changes); } meta_compositor_sync_screen_size (screen->display->compositor, screen->rect.width, screen->rect.height); /* Queue a resize on all the windows */ meta_screen_foreach_window (screen, meta_screen_resize_func, 0); /* Fix up monitor for all windows on this screen */ windows = meta_display_list_windows (screen->display, META_LIST_INCLUDE_OVERRIDE_REDIRECT); for (tmp = windows; tmp != NULL; tmp = tmp->next) { MetaWindow *window = tmp->data; if (window->screen == screen) meta_window_update_for_monitors_changed (window); } g_slist_free (windows); meta_screen_queue_check_fullscreen (screen); g_signal_emit (screen, screen_signals[MONITORS_CHANGED], 0); } void meta_screen_update_showing_desktop_hint (MetaScreen *screen) { unsigned long data[1]; data[0] = screen->active_workspace->showing_desktop ? 1 : 0; meta_error_trap_push (screen->display); XChangeProperty (screen->display->xdisplay, screen->xroot, screen->display->atom__NET_SHOWING_DESKTOP, XA_CARDINAL, 32, PropModeReplace, (guchar*) data, 1); meta_error_trap_pop (screen->display); } static void queue_windows_showing (MetaScreen *screen) { GSList *windows; GSList *tmp; /* Must operate on all windows on display instead of just on the * active_workspace's window list, because the active_workspace's * window list may not contain the on_all_workspace windows. */ windows = meta_display_list_windows (screen->display, META_LIST_DEFAULT); tmp = windows; while (tmp != NULL) { MetaWindow *w = tmp->data; if (w->screen == screen) meta_window_queue (w, META_QUEUE_CALC_SHOWING); tmp = tmp->next; } g_slist_free (windows); } void meta_screen_minimize_all_on_active_workspace_except (MetaScreen *screen, MetaWindow *keep) { GList *windows; GList *tmp; windows = screen->active_workspace->windows; tmp = windows; while (tmp != NULL) { MetaWindow *w = tmp->data; if (w->screen == screen && w->has_minimize_func && w != keep) meta_window_minimize (w); tmp = tmp->next; } } void meta_screen_show_desktop (MetaScreen *screen, guint32 timestamp) { GList *windows; if (screen->active_workspace->showing_desktop) return; screen->active_workspace->showing_desktop = TRUE; queue_windows_showing (screen); /* Focus the most recently used META_WINDOW_DESKTOP window, if there is one; * see bug 159257. */ windows = screen->active_workspace->mru_list; while (windows != NULL) { MetaWindow *w = windows->data; if (w->screen == screen && w->type == META_WINDOW_DESKTOP) { meta_window_focus (w, timestamp); break; } windows = windows->next; } meta_screen_update_showing_desktop_hint (screen); } void meta_screen_unshow_desktop (MetaScreen *screen) { if (!screen->active_workspace->showing_desktop) return; screen->active_workspace->showing_desktop = FALSE; queue_windows_showing (screen); meta_screen_update_showing_desktop_hint (screen); } #ifdef HAVE_STARTUP_NOTIFICATION static gboolean startup_sequence_timeout (void *data); static void update_startup_feedback (MetaScreen *screen) { if (screen->startup_sequences != NULL) { meta_topic (META_DEBUG_STARTUP, "Setting busy cursor\n"); meta_screen_set_cursor (screen, META_CURSOR_BUSY); } else { meta_topic (META_DEBUG_STARTUP, "Setting default cursor\n"); meta_screen_set_cursor (screen, META_CURSOR_DEFAULT); } } static void add_sequence (MetaScreen *screen, SnStartupSequence *sequence) { meta_topic (META_DEBUG_STARTUP, "Adding sequence %s\n", sn_startup_sequence_get_id (sequence)); sn_startup_sequence_ref (sequence); screen->startup_sequences = g_slist_prepend (screen->startup_sequences, sequence); /* our timeout just polls every second, instead of bothering * to compute exactly when we may next time out */ if (screen->startup_sequence_timeout == 0) { screen->startup_sequence_timeout = g_timeout_add_seconds (1, startup_sequence_timeout, screen); g_source_set_name_by_id (screen->startup_sequence_timeout, "[mutter] startup_sequence_timeout"); } update_startup_feedback (screen); } static void remove_sequence (MetaScreen *screen, SnStartupSequence *sequence) { meta_topic (META_DEBUG_STARTUP, "Removing sequence %s\n", sn_startup_sequence_get_id (sequence)); screen->startup_sequences = g_slist_remove (screen->startup_sequences, sequence); if (screen->startup_sequences == NULL && screen->startup_sequence_timeout != 0) { g_source_remove (screen->startup_sequence_timeout); screen->startup_sequence_timeout = 0; } update_startup_feedback (screen); sn_startup_sequence_unref (sequence); } typedef struct { GSList *list; GTimeVal now; } CollectTimedOutData; /* This should be fairly long, as it should never be required unless * apps or .desktop files are buggy, and it's confusing if * OpenOffice or whatever seems to stop launching - people * might decide they need to launch it again. */ #define STARTUP_TIMEOUT 15000 static void collect_timed_out_foreach (void *element, void *data) { CollectTimedOutData *ctod = data; SnStartupSequence *sequence = element; long tv_sec, tv_usec; double elapsed; sn_startup_sequence_get_last_active_time (sequence, &tv_sec, &tv_usec); elapsed = ((((double)ctod->now.tv_sec - tv_sec) * G_USEC_PER_SEC + (ctod->now.tv_usec - tv_usec))) / 1000.0; meta_topic (META_DEBUG_STARTUP, "Sequence used %g seconds vs. %g max: %s\n", elapsed, (double) STARTUP_TIMEOUT, sn_startup_sequence_get_id (sequence)); if (elapsed > STARTUP_TIMEOUT) ctod->list = g_slist_prepend (ctod->list, sequence); } static gboolean startup_sequence_timeout (void *data) { MetaScreen *screen = data; CollectTimedOutData ctod; GSList *tmp; ctod.list = NULL; g_get_current_time (&ctod.now); g_slist_foreach (screen->startup_sequences, collect_timed_out_foreach, &ctod); tmp = ctod.list; while (tmp != NULL) { SnStartupSequence *sequence = tmp->data; meta_topic (META_DEBUG_STARTUP, "Timed out sequence %s\n", sn_startup_sequence_get_id (sequence)); sn_startup_sequence_complete (sequence); tmp = tmp->next; } g_slist_free (ctod.list); if (screen->startup_sequences != NULL) { return TRUE; } else { /* remove */ screen->startup_sequence_timeout = 0; return FALSE; } } static void meta_screen_sn_event (SnMonitorEvent *event, void *user_data) { MetaScreen *screen; SnStartupSequence *sequence; screen = user_data; sequence = sn_monitor_event_get_startup_sequence (event); sn_startup_sequence_ref (sequence); switch (sn_monitor_event_get_type (event)) { case SN_MONITOR_EVENT_INITIATED: { const char *wmclass; wmclass = sn_startup_sequence_get_wmclass (sequence); meta_topic (META_DEBUG_STARTUP, "Received startup initiated for %s wmclass %s\n", sn_startup_sequence_get_id (sequence), wmclass ? wmclass : "(unset)"); add_sequence (screen, sequence); } break; case SN_MONITOR_EVENT_COMPLETED: { meta_topic (META_DEBUG_STARTUP, "Received startup completed for %s\n", sn_startup_sequence_get_id (sequence)); remove_sequence (screen, sn_monitor_event_get_startup_sequence (event)); } break; case SN_MONITOR_EVENT_CHANGED: meta_topic (META_DEBUG_STARTUP, "Received startup changed for %s\n", sn_startup_sequence_get_id (sequence)); break; case SN_MONITOR_EVENT_CANCELED: meta_topic (META_DEBUG_STARTUP, "Received startup canceled for %s\n", sn_startup_sequence_get_id (sequence)); break; } g_signal_emit (G_OBJECT (screen), screen_signals[STARTUP_SEQUENCE_CHANGED], 0, sequence); sn_startup_sequence_unref (sequence); } /** * meta_screen_get_startup_sequences: (skip) * @screen: * * Return value: (transfer none): Currently active #SnStartupSequence items */ GSList * meta_screen_get_startup_sequences (MetaScreen *screen) { return screen->startup_sequences; } #endif /* Sets the initial_timestamp and initial_workspace properties * of a window according to information given us by the * startup-notification library. * * Returns TRUE if startup properties have been applied, and * FALSE if they have not (for example, if they had already * been applied.) */ gboolean meta_screen_apply_startup_properties (MetaScreen *screen, MetaWindow *window) { #ifdef HAVE_STARTUP_NOTIFICATION const char *startup_id; GSList *tmp; SnStartupSequence *sequence; /* Does the window have a startup ID stored? */ startup_id = meta_window_get_startup_id (window); meta_topic (META_DEBUG_STARTUP, "Applying startup props to %s id \"%s\"\n", window->desc, startup_id ? startup_id : "(none)"); sequence = NULL; if (startup_id == NULL) { /* No startup ID stored for the window. Let's ask the * startup-notification library whether there's anything * stored for the resource name or resource class hints. */ tmp = screen->startup_sequences; while (tmp != NULL) { const char *wmclass; wmclass = sn_startup_sequence_get_wmclass (tmp->data); if (wmclass != NULL && ((window->res_class && strcmp (wmclass, window->res_class) == 0) || (window->res_name && strcmp (wmclass, window->res_name) == 0))) { sequence = tmp->data; g_assert (window->startup_id == NULL); window->startup_id = g_strdup (sn_startup_sequence_get_id (sequence)); startup_id = window->startup_id; meta_topic (META_DEBUG_STARTUP, "Ending legacy sequence %s due to window %s\n", sn_startup_sequence_get_id (sequence), window->desc); sn_startup_sequence_complete (sequence); break; } tmp = tmp->next; } } /* Still no startup ID? Bail. */ if (startup_id == NULL) return FALSE; /* We might get this far and not know the sequence ID (if the window * already had a startup ID stored), so let's look for one if we don't * already know it. */ if (sequence == NULL) { tmp = screen->startup_sequences; while (tmp != NULL) { const char *id; id = sn_startup_sequence_get_id (tmp->data); if (strcmp (id, startup_id) == 0) { sequence = tmp->data; break; } tmp = tmp->next; } } if (sequence != NULL) { gboolean changed_something = FALSE; meta_topic (META_DEBUG_STARTUP, "Found startup sequence for window %s ID \"%s\"\n", window->desc, startup_id); if (!window->initial_workspace_set) { int space = sn_startup_sequence_get_workspace (sequence); if (space >= 0) { meta_topic (META_DEBUG_STARTUP, "Setting initial window workspace to %d based on startup info\n", space); window->initial_workspace_set = TRUE; window->initial_workspace = space; changed_something = TRUE; } } if (!window->initial_timestamp_set) { guint32 timestamp = sn_startup_sequence_get_timestamp (sequence); meta_topic (META_DEBUG_STARTUP, "Setting initial window timestamp to %u based on startup info\n", timestamp); window->initial_timestamp_set = TRUE; window->initial_timestamp = timestamp; changed_something = TRUE; } return changed_something; } else { meta_topic (META_DEBUG_STARTUP, "Did not find startup sequence for window %s ID \"%s\"\n", window->desc, startup_id); } #endif /* HAVE_STARTUP_NOTIFICATION */ return FALSE; } int meta_screen_get_screen_number (MetaScreen *screen) { return screen->number; } /** * meta_screen_get_display: * @screen: A #MetaScreen * * Retrieve the display associated with screen. * * Returns: (transfer none): Display */ MetaDisplay * meta_screen_get_display (MetaScreen *screen) { return screen->display; } /** * meta_screen_get_xroot: (skip) * @screen: A #MetaScreen * */ Window meta_screen_get_xroot (MetaScreen *screen) { return screen->xroot; } /** * meta_screen_get_size: * @screen: A #MetaScreen * @width: (out): The width of the screen * @height: (out): The height of the screen * * Retrieve the size of the screen. */ void meta_screen_get_size (MetaScreen *screen, int *width, int *height) { if (width != NULL) *width = screen->rect.width; if (height != NULL) *height = screen->rect.height; } void meta_screen_set_cm_selection (MetaScreen *screen) { char selection[32]; Atom a; screen->wm_cm_timestamp = meta_display_get_current_time_roundtrip ( screen->display); g_snprintf (selection, sizeof(selection), "_NET_WM_CM_S%d", screen->number); meta_verbose ("Setting selection: %s\n", selection); a = XInternAtom (screen->display->xdisplay, selection, FALSE); XSetSelectionOwner (screen->display->xdisplay, a, screen->wm_cm_selection_window, screen->wm_cm_timestamp); } void meta_screen_unset_cm_selection (MetaScreen *screen) { char selection[32]; Atom a; g_snprintf (selection, sizeof(selection), "_NET_WM_CM_S%d", screen->number); a = XInternAtom (screen->display->xdisplay, selection, FALSE); XSetSelectionOwner (screen->display->xdisplay, a, None, screen->wm_cm_timestamp); } /** * meta_screen_get_workspaces: (skip) * @screen: a #MetaScreen * * Returns: (transfer none) (element-type Meta.Workspace): The workspaces for @screen */ GList * meta_screen_get_workspaces (MetaScreen *screen) { return screen->workspaces; } int meta_screen_get_active_workspace_index (MetaScreen *screen) { MetaWorkspace *active = screen->active_workspace; if (!active) return -1; return meta_workspace_index (active); } /** * meta_screen_get_active_workspace: * @screen: A #MetaScreen * * Returns: (transfer none): The current workspace */ MetaWorkspace * meta_screen_get_active_workspace (MetaScreen *screen) { return screen->active_workspace; } void meta_screen_focus_default_window (MetaScreen *screen, guint32 timestamp) { meta_workspace_focus_default_window (screen->active_workspace, NULL, timestamp); } void meta_screen_restacked (MetaScreen *screen) { g_signal_emit (screen, screen_signals[RESTACKED], 0); } void meta_screen_workspace_switched (MetaScreen *screen, int from, int to, MetaMotionDirection direction) { g_signal_emit (screen, screen_signals[WORKSPACE_SWITCHED], 0, from, to, direction); } void meta_screen_set_active_workspace_hint (MetaScreen *screen) { unsigned long data[1]; /* this is because we destroy the spaces in order, * so we always end up setting a current desktop of * 0 when closing a screen, so lose the current desktop * on restart. By doing this we keep the current * desktop on restart. */ if (screen->closing > 0) return; data[0] = meta_workspace_index (screen->active_workspace); meta_verbose ("Setting _NET_CURRENT_DESKTOP to %lu\n", data[0]); meta_error_trap_push (screen->display); XChangeProperty (screen->display->xdisplay, screen->xroot, screen->display->atom__NET_CURRENT_DESKTOP, XA_CARDINAL, 32, PropModeReplace, (guchar*) data, 1); meta_error_trap_pop (screen->display); } static gboolean check_fullscreen_func (gpointer data) { MetaScreen *screen = data; GSList *windows; GSList *tmp; GSList *fullscreen_monitors = NULL; gboolean in_fullscreen_changed = FALSE; int i; screen->check_fullscreen_later = 0; windows = meta_display_list_windows (screen->display, META_LIST_INCLUDE_OVERRIDE_REDIRECT); for (tmp = windows; tmp != NULL; tmp = tmp->next) { MetaWindow *window = tmp->data; gboolean covers_monitors = FALSE; if (window->screen != screen || window->hidden) continue; if (window->fullscreen) /* The checks for determining a fullscreen window's layer are quite * elaborate, and we do a poor job at keeping it dynamically up-to-date. * (It depends, for example, on whether the focus window is on the * same monitor as the fullscreen window.) But because we minimize * fullscreen windows not in LAYER_FULLSCREEN (see below), if the * layer is stale here, it's really bad, so just force recomputation for * here. This is expensive, but hopefully this function won't be * called too often. */ meta_window_update_layer (window); if (window->override_redirect) { /* We want to handle the case where an application is creating an * override-redirect window the size of the screen (monitor) and treat * it similarly to a fullscreen window, though it doesn't have fullscreen * window management behavior. (Being O-R, it's not managed at all.) */ if (meta_window_is_monitor_sized (window)) covers_monitors = TRUE; } else { if (window->layer == META_LAYER_FULLSCREEN) covers_monitors = TRUE; } if (covers_monitors) { int *monitors; gsize n_monitors; gsize j; monitors = meta_window_get_all_monitors (window, &n_monitors); for (j = 0; j < n_monitors; j++) { /* + 1 to avoid NULL */ gpointer monitor_p = GINT_TO_POINTER(monitors[j] + 1); if (!g_slist_find (fullscreen_monitors, monitor_p)) fullscreen_monitors = g_slist_prepend (fullscreen_monitors, monitor_p); } g_free (monitors); } /* If we find a window that is fullscreen but not in the FULLSCREEN * layer, it means that we've kicked it out of the layer because * we've focused another window on the same monitor. In this case * it would be confusing to keep the window fullscreen and visible, * so minimize it. We can't do the same thing for override-redirect * windows, so we just hope the application does the right thing. */ if (!covers_monitors && window->fullscreen) { meta_window_minimize (window); meta_topic (META_DEBUG_WINDOW_OPS, "Minimizing %s: was fullscreen but in a lower layer\n", window->desc); } } g_slist_free (windows); for (i = 0; i < screen->n_monitor_infos; i++) { MetaMonitorInfo *info = &screen->monitor_infos[i]; gboolean in_fullscreen = g_slist_find (fullscreen_monitors, GINT_TO_POINTER (i + 1)) != NULL; if (in_fullscreen != info->in_fullscreen) { info->in_fullscreen = in_fullscreen; in_fullscreen_changed = TRUE; } } g_slist_free (fullscreen_monitors); if (in_fullscreen_changed) g_signal_emit (screen, screen_signals[IN_FULLSCREEN_CHANGED], 0, NULL); return FALSE; } void meta_screen_queue_check_fullscreen (MetaScreen *screen) { if (!screen->check_fullscreen_later) screen->check_fullscreen_later = meta_later_add (META_LATER_CHECK_FULLSCREEN, check_fullscreen_func, screen, NULL); } /** * meta_screen_get_monitor_in_fullscreen: * @screen: a #MetaScreen * @monitor: the monitor number * * Determines whether there is a fullscreen window obscuring the specified * monitor. If there is a fullscreen window, the desktop environment will * typically hide any controls that might obscure the fullscreen window. * * You can get notification when this changes by connecting to * MetaScreen::in-fullscreen-changed. * * Returns: %TRUE if there is a fullscreen window covering the specified monitor. */ gboolean meta_screen_get_monitor_in_fullscreen (MetaScreen *screen, int monitor) { g_return_val_if_fail (META_IS_SCREEN (screen), FALSE); g_return_val_if_fail (monitor >= 0 && monitor < screen->n_monitor_infos, FALSE); /* We use -1 as a flag to mean "not known yet" for notification purposes */ return screen->monitor_infos[monitor].in_fullscreen == TRUE; } gboolean meta_screen_handle_xevent (MetaScreen *screen, XEvent *xevent) { MetaCursorTracker *tracker = meta_cursor_tracker_get_for_screen (screen); if (meta_cursor_tracker_handle_xevent (tracker, xevent)) return TRUE; return FALSE; }