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Diffstat (limited to 'src/core/screen.c')
| -rw-r--r-- | src/core/screen.c | 2815 |
1 files changed, 2815 insertions, 0 deletions
diff --git a/src/core/screen.c b/src/core/screen.c new file mode 100644 index 00000000..f9db9c71 --- /dev/null +++ b/src/core/screen.c @@ -0,0 +1,2815 @@ +/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ + +/* Marco X screen handler */ + +/* + * 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, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA + * 02111-1307, USA. + */ + +#include <config.h> +#include "screen-private.h" +#include "util.h" +#include "errors.h" +#include "window-private.h" +#include "frame-private.h" +#include "prefs.h" +#include "workspace.h" +#include "keybindings.h" +#include "stack.h" +#include "xprops.h" +#include "compositor.h" + +#ifdef HAVE_SOLARIS_XINERAMA +#include <X11/extensions/xinerama.h> +#endif +#ifdef HAVE_XFREE_XINERAMA +#include <X11/extensions/Xinerama.h> +#endif + +#include <X11/Xatom.h> +#include <locale.h> +#include <string.h> +#include <stdio.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 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 "atomnames.h" +#undef item +#undef EWMH_ATOMS_ONLY + }; + + 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]; + + /* 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 +} + +static void +reload_xinerama_infos (MetaScreen *screen) +{ + MetaDisplay *display; + + { + GList *tmp; + + tmp = screen->workspaces; + while (tmp != NULL) + { + MetaWorkspace *space = tmp->data; + + meta_workspace_invalidate_work_area (space); + + tmp = tmp->next; + } + } + + 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].rect.x = infos[i].x_org; + screen->xinerama_infos[i].rect.y = infos[i].y_org; + screen->xinerama_infos[i].rect.width = infos[i].width; + screen->xinerama_infos[i].rect.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].rect.x, + screen->xinerama_infos[i].rect.y, + screen->xinerama_infos[i].rect.width, + screen->xinerama_infos[i].rect.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, + "Marco 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; + result = XineramaGetInfo (screen->display->xdisplay, + 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].rect.x = monitors[i].x; + screen->xinerama_infos[i].rect.y = monitors[i].y; + screen->xinerama_infos[i].rect.width = monitors[i].width; + screen->xinerama_infos[i].rect.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].rect.x, + screen->xinerama_infos[i].rect.y, + screen->xinerama_infos[i].rect.width, + screen->xinerama_infos[i].rect.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, + "Marco 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 ("MARCO_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].rect = screen->rect; + screen->xinerama_infos[0].rect.width = screen->rect.width / 2; + + screen->xinerama_infos[1].number = 1; + screen->xinerama_infos[1].rect = screen->rect; + screen->xinerama_infos[1].rect.x = screen->rect.width / 2; + screen->xinerama_infos[1].rect.width = screen->rect.width / 2; + } + 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].rect = screen->rect; + } + } + + g_assert (screen->n_xinerama_infos > 0); + g_assert (screen->xinerama_infos != NULL); +} + +MetaScreen* +meta_screen_new (MetaDisplay *display, + int number, + guint32 timestamp) +{ + MetaScreen *screen; + Window xroot; + Display *xdisplay; + XWindowAttributes attr; + Window new_wm_sn_owner; + Window current_wm_sn_owner; + gboolean replace_current_wm; + Atom wm_sn_atom; + char buf[128]; + guint32 manager_timestamp; + gulong current_workspace; + + 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_with_return (display); + attrs.event_mask = StructureNotifyMask; + XChangeWindowAttributes (xdisplay, + current_wm_sn_owner, CWEventMask, &attrs); + if (meta_error_trap_pop_with_return (display, FALSE) != 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_with_return (display); + + /* We need to or with the existing event mask since + * gtk+ may be interested in other events. + */ + XGetWindowAttributes (xdisplay, xroot, &attr); + XSelectInput (xdisplay, + xroot, + SubstructureRedirectMask | SubstructureNotifyMask | + ColormapChangeMask | PropertyChangeMask | + LeaveWindowMask | EnterWindowMask | + KeyPressMask | KeyReleaseMask | + FocusChangeMask | StructureNotifyMask | +#ifdef HAVE_COMPOSITE_EXTENSIONS + ExposureMask | +#endif + attr.your_event_mask); + if (meta_error_trap_pop_with_return (display, FALSE) != 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_new (MetaScreen, 1); + 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; + screen->rect.width = WidthOfScreen (screen->xscreen); + screen->rect.height = HeightOfScreen (screen->xscreen); + screen->current_cursor = -1; /* invalid/unset */ + screen->default_xvisual = DefaultVisualOfScreen (screen->xscreen); + screen->default_depth = DefaultDepthOfScreen (screen->xscreen); + screen->flash_window = None; + + screen->wm_sn_selection_window = new_wm_sn_owner; + screen->wm_sn_atom = wm_sn_atom; + screen->wm_sn_timestamp = manager_timestamp; + +#ifdef HAVE_COMPOSITE_EXTENSIONS + screen->wm_cm_selection_window = meta_create_offscreen_window (xdisplay, + xroot, + NoEventMask); +#endif + screen->work_area_idle = 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->compositor_data = NULL; + + { + XFontStruct *font_info; + XGCValues gc_values; + gulong value_mask = 0; + + gc_values.subwindow_mode = IncludeInferiors; + value_mask |= GCSubwindowMode; + gc_values.function = GXinvert; + value_mask |= GCFunction; + gc_values.line_width = META_WIREFRAME_XOR_LINE_WIDTH; + 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, 1); + } + else + meta_warning ("xserver doesn't have 'fixed' font.\n"); + + screen->root_xor_gc = XCreateGC (screen->display->xdisplay, + screen->xroot, + value_mask, + &gc_values); + } + + screen->xinerama_infos = NULL; + screen->n_xinerama_infos = 0; + screen->last_xinerama_index = 0; + + reload_xinerama_infos (screen); + + meta_screen_set_cursor (screen, META_CURSOR_DEFAULT); + + /* 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); + + /* Get current workspace */ + current_workspace = 0; + if (meta_prop_get_cardinal (screen->display, + screen->xroot, + screen->display->atom__NET_CURRENT_DESKTOP, + ¤t_workspace)) + meta_verbose ("Read existing _NET_CURRENT_DESKTOP = %d\n", + (int) current_workspace); + else + meta_verbose ("No _NET_CURRENT_DESKTOP present\n"); + + /* Screens must have at least one workspace at all times, + * so create that required workspace. + */ + meta_workspace_activate (meta_workspace_new (screen), timestamp); + update_num_workspaces (screen, timestamp); + + set_workspace_names (screen); + + screen->all_keys_grabbed = FALSE; + screen->keys_grabbed = FALSE; + meta_screen_grab_keys (screen); + + screen->ui = meta_ui_new (screen->display->xdisplay, + screen->xscreen); + + screen->tab_popup = NULL; + + screen->stack = meta_stack_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 + + /* Switch to the _NET_CURRENT_DESKTOP workspace */ + { + MetaWorkspace *space; + + space = meta_screen_get_workspace_by_index (screen, + current_workspace); + + if (space != NULL) + meta_workspace_activate (space, timestamp); + } + + meta_verbose ("Added screen %d ('%s') root 0x%lx\n", + screen->number, screen->screen_name, screen->xroot); + + return screen; +} + +void +meta_screen_free (MetaScreen *screen, + guint32 timestamp) +{ + MetaDisplay *display; + XGCValues gc_values = { 0 }; + + display = screen->display; + + screen->closing += 1; + + meta_display_grab (display); + + if (screen->display->compositor) + { + meta_compositor_unmanage_screen (screen->display->compositor, + screen); + } + + 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_error_trap_push_with_return (screen->display); + XSelectInput (screen->display->xdisplay, screen->xroot, 0); + if (meta_error_trap_pop_with_return (screen->display, FALSE) != 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_idle != 0) + g_source_remove (screen->work_area_idle); + + + if (XGetGCValues (screen->display->xdisplay, + screen->root_xor_gc, + GCFont, + &gc_values)) + { + XUnloadFont (screen->display->xdisplay, + gc_values.font); + } + + XFreeGC (screen->display->xdisplay, + screen->root_xor_gc); + + if (screen->xinerama_infos) + g_free (screen->xinerama_infos); + + g_free (screen->screen_name); + g_free (screen); + + XFlush (display->xdisplay); + meta_display_ungrab (display); +} + +typedef struct +{ + Window xwindow; + XWindowAttributes attrs; +} WindowInfo; + +static GList * +list_windows (MetaScreen *screen) +{ + Window ignored1, ignored2; + Window *children; + guint n_children, i; + GList *result; + + XQueryTree (screen->display->xdisplay, + screen->xroot, + &ignored1, &ignored2, &children, &n_children); + + result = NULL; + for (i = 0; i < n_children; ++i) + { + WindowInfo *info = g_new0 (WindowInfo, 1); + + meta_error_trap_push_with_return (screen->display); + + XGetWindowAttributes (screen->display->xdisplay, + children[i], &info->attrs); + + if (meta_error_trap_pop_with_return (screen->display, TRUE)) + { + meta_verbose ("Failed to get attributes for window 0x%lx\n", + children[i]); + g_free (info); + } + else + { + info->xwindow = children[i]; + } + + result = g_list_prepend (result, info); + } + + if (children) + XFree (children); + + return g_list_reverse (result); +} + +void +meta_screen_manage_all_windows (MetaScreen *screen) +{ + GList *windows; + GList *list; + + meta_display_grab (screen->display); + + windows = list_windows (screen); + + meta_stack_freeze (screen->stack); + for (list = windows; list != NULL; list = list->next) + { + WindowInfo *info = list->data; + MetaWindow *window; + + window = meta_window_new_with_attrs (screen->display, info->xwindow, TRUE, + &info->attrs); + if (info->xwindow == screen->no_focus_window || + info->xwindow == screen->flash_window || +#ifdef HAVE_COMPOSITE_EXTENSIONS + info->xwindow == screen->wm_cm_selection_window || +#endif + info->xwindow == screen->wm_sn_selection_window) { + meta_verbose ("Not managing our own windows\n"); + continue; + } + + if (screen->display->compositor) + meta_compositor_add_window (screen->display->compositor, window, + info->xwindow, &info->attrs); + } + meta_stack_thaw (screen->stack); + + g_list_foreach (windows, (GFunc)g_free, NULL); + g_list_free (windows); + + meta_display_ungrab (screen->display); +} + +void +meta_screen_composite_all_windows (MetaScreen *screen) +{ +#ifdef HAVE_COMPOSITE_EXTENSIONS + MetaDisplay *display; + GList *windows, *list; + + display = screen->display; + if (!display->compositor) + return; + + windows = list_windows (screen); + + meta_stack_freeze (screen->stack); + + for (list = windows; list != NULL; list = list->next) + { + WindowInfo *info = list->data; + + if (info->xwindow == screen->no_focus_window || + info->xwindow == screen->flash_window || + info->xwindow == screen->wm_sn_selection_window || + info->xwindow == screen->wm_cm_selection_window) { + meta_verbose ("Not managing our own windows\n"); + continue; + } + + meta_compositor_add_window (display->compositor, + meta_display_lookup_x_window (display, + info->xwindow), + info->xwindow, &info->attrs); + } + + meta_stack_thaw (screen->stack); + + g_list_foreach (windows, (GFunc)g_free, NULL); + g_list_free (windows); +#endif +} + +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); +} + +static void +prefs_changed_callback (MetaPreference pref, + gpointer data) +{ + MetaScreen *screen = data; + + if (pref == META_PREF_NUM_WORKSPACES) + { + /* MateConf 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); +} + +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); + } + + tmp = tmp->next; + } + 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); +} + +static void +queue_resize (MetaScreen *screen, MetaWindow *window, gpointer data) +{ + meta_window_queue (window, META_QUEUE_MOVE_RESIZE); +} + +void +meta_screen_queue_window_resizes (MetaScreen *screen) +{ + meta_screen_foreach_window (screen, queue_resize, NULL); +} + +int +meta_screen_get_n_workspaces (MetaScreen *screen) +{ + return g_list_length (screen->workspaces); +} + +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, FALSE); +} + +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, FALSE); +} + +static void +set_desktop_viewport_hint (MetaScreen *screen) +{ + unsigned long data[2]; + + if (screen->closing > 0) + return; + + /* + * Marco 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); +} + +static void +update_num_workspaces (MetaScreen *screen, + guint32 timestamp) +{ + 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; + 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; + } + + 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_free (w); + + tmp = tmp->next; + } + + g_list_free (extras); + + while (i < new_num) + { + meta_workspace_new (screen); + ++i; + } + + set_number_of_spaces_hint (screen, new_num); + + meta_screen_queue_workarea_recalc (screen); +} + +static void +update_focus_mode (MetaScreen *screen) +{ + /* nothing to do anymore */ ; +} + +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); + XFlush (screen->display->xdisplay); + XFreeCursor (screen->display->xdisplay, xcursor); +} + +void +meta_screen_update_cursor (MetaScreen *screen) +{ + Cursor xcursor; + + xcursor = meta_display_create_x_cursor (screen->display, + screen->current_cursor); + XDefineCursor (screen->display->xdisplay, screen->xroot, xcursor); + XFlush (screen->display->xdisplay); + XFreeCursor (screen->display->xdisplay, xcursor); +} + +#define MAX_PREVIEW_SIZE 150.0 + +static GdkPixbuf * +get_window_pixbuf (MetaWindow *window, + int *width, + int *height) +{ + Pixmap pmap; + GdkPixbuf *pixbuf, *scaled; + double ratio; + + pmap = meta_compositor_get_window_pixmap (window->display->compositor, + window); + if (pmap == None) + return NULL; + + pixbuf = meta_ui_get_pixbuf_from_pixmap (pmap); + if (pixbuf == NULL) + return NULL; + + *width = gdk_pixbuf_get_width (pixbuf); + *height = gdk_pixbuf_get_height (pixbuf); + + /* Scale pixbuf to max dimension MAX_PREVIEW_SIZE */ + if (*width > *height) + { + ratio = ((double) *width) / MAX_PREVIEW_SIZE; + *width = (int) MAX_PREVIEW_SIZE; + *height = (int) (((double) *height) / ratio); + } + else + { + ratio = ((double) *height) / MAX_PREVIEW_SIZE; + *height = (int) MAX_PREVIEW_SIZE; + *width = (int) (((double) *width) / ratio); + } + + scaled = gdk_pixbuf_scale_simple (pixbuf, *width, *height, + GDK_INTERP_BILINEAR); + g_object_unref (pixbuf); + return scaled; +} + +void +meta_screen_ensure_tab_popup (MetaScreen *screen, + MetaTabList list_type, + MetaTabShowType show_type) +{ + MetaTabEntry *entries; + GList *tab_list; + GList *tmp; + int len; + int i; + + if (screen->tab_popup) + return; + + tab_list = meta_display_get_tab_list (screen->display, + list_type, + screen, + screen->active_workspace); + + len = g_list_length (tab_list); + + entries = g_new (MetaTabEntry, len + 1); + entries[len].key = NULL; + entries[len].title = NULL; + entries[len].icon = NULL; + + i = 0; + tmp = tab_list; + while (i < len) + { + MetaWindow *window; + MetaRectangle r; + GdkPixbuf *win_pixbuf; + int width, height; + + window = tmp->data; + + entries[i].key = (MetaTabEntryKey) window->xwindow; + entries[i].title = window->title; + + win_pixbuf = get_window_pixbuf (window, &width, &height); + if (win_pixbuf == NULL) + entries[i].icon = g_object_ref (window->icon); + else + { + int icon_width, icon_height, t_width, t_height; +#define ICON_OFFSET 6 + + icon_width = gdk_pixbuf_get_width (window->icon); + icon_height = gdk_pixbuf_get_height (window->icon); + + t_width = width + ICON_OFFSET; + t_height = height + ICON_OFFSET; + + entries[i].icon = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8, + t_width, t_height); + gdk_pixbuf_fill (entries[i].icon, 0x00000000); + gdk_pixbuf_copy_area (win_pixbuf, 0, 0, width, height, + entries[i].icon, 0, 0); + g_object_unref (win_pixbuf); + gdk_pixbuf_composite (window->icon, entries[i].icon, + t_width - icon_width, t_height - icon_height, + icon_width, icon_height, + t_width - icon_width, t_height - icon_height, + 1.0, 1.0, GDK_INTERP_BILINEAR, 255); + } + + entries[i].blank = FALSE; + entries[i].hidden = !meta_window_showing_on_its_workspace (window); + entries[i].demands_attention = window->wm_state_demands_attention; + + if (show_type == META_TAB_SHOW_INSTANTLY || + !entries[i].hidden || + !meta_window_get_icon_geometry (window, &r)) + meta_window_get_outer_rect (window, &r); + + entries[i].rect = r; + + /* Find inside of highlight rectangle to be used when window is + * outlined for tabbing. This should be the size of the + * east/west frame, and the size of the south frame, on those + * sides. On the top it should be the size of the south frame + * edge. + */ +#define OUTLINE_WIDTH 5 + /* Top side */ + if (!entries[i].hidden && + window->frame && window->frame->bottom_height > 0 && + window->frame->child_y >= window->frame->bottom_height) + entries[i].inner_rect.y = window->frame->bottom_height; + else + entries[i].inner_rect.y = OUTLINE_WIDTH; + + /* Bottom side */ + if (!entries[i].hidden && + window->frame && window->frame->bottom_height != 0) + entries[i].inner_rect.height = r.height + - entries[i].inner_rect.y - window->frame->bottom_height; + else + entries[i].inner_rect.height = r.height + - entries[i].inner_rect.y - OUTLINE_WIDTH; + + /* Left side */ + if (!entries[i].hidden && window->frame && window->frame->child_x != 0) + entries[i].inner_rect.x = window->frame->child_x; + else + entries[i].inner_rect.x = OUTLINE_WIDTH; + + /* Right side */ + if (!entries[i].hidden && + window->frame && window->frame->right_width != 0) + entries[i].inner_rect.width = r.width + - entries[i].inner_rect.x - window->frame->right_width; + else + entries[i].inner_rect.width = r.width + - entries[i].inner_rect.x - OUTLINE_WIDTH; + + ++i; + tmp = tmp->next; + } + + screen->tab_popup = meta_ui_tab_popup_new (entries, + screen->number, + len, + 5, /* FIXME */ + TRUE); + + for (i = 0; i < len; i++) + g_object_unref (entries[i].icon); + + g_free (entries); + + g_list_free (tab_list); + + /* don't show tab popup, since proper window isn't selected yet */ +} + +void +meta_screen_ensure_workspace_popup (MetaScreen *screen) +{ + MetaTabEntry *entries; + int len; + int i; + MetaWorkspaceLayout layout; + int n_workspaces; + int current_workspace; + + if (screen->tab_popup) + return; + + current_workspace = meta_workspace_index (screen->active_workspace); + n_workspaces = meta_screen_get_n_workspaces (screen); + + meta_screen_calc_workspace_layout (screen, n_workspaces, + current_workspace, &layout); + + len = layout.grid_area; + + entries = g_new (MetaTabEntry, len + 1); + entries[len].key = NULL; + entries[len].title = NULL; + entries[len].icon = NULL; + + i = 0; + while (i < len) + { + if (layout.grid[i] >= 0) + { + MetaWorkspace *workspace; + + workspace = meta_screen_get_workspace_by_index (screen, + layout.grid[i]); + + entries[i].key = (MetaTabEntryKey) workspace; + entries[i].title = meta_workspace_get_name (workspace); + entries[i].icon = NULL; + entries[i].blank = FALSE; + + g_assert (entries[i].title != NULL); + } + else + { + entries[i].key = NULL; + entries[i].title = NULL; + entries[i].icon = NULL; + entries[i].blank = TRUE; + } + entries[i].hidden = FALSE; + entries[i].demands_attention = FALSE; + + ++i; + } + + screen->tab_popup = meta_ui_tab_popup_new (entries, + screen->number, + len, + layout.cols, + FALSE); + + g_free (entries); + meta_screen_free_workspace_layout (&layout); + + /* don't show tab popup, since proper space isn't selected yet */ +} + +MetaWindow* +meta_screen_get_mouse_window (MetaScreen *screen, + MetaWindow *not_this_one) +{ + MetaWindow *window; + Window root_return, child_return; + int root_x_return, root_y_return; + int win_x_return, win_y_return; + unsigned int mask_return; + + if (not_this_one) + meta_topic (META_DEBUG_FOCUS, + "Focusing mouse window excluding %s\n", not_this_one->desc); + + meta_error_trap_push (screen->display); + XQueryPointer (screen->display->xdisplay, + screen->xroot, + &root_return, + &child_return, + &root_x_return, + &root_y_return, + &win_x_return, + &win_y_return, + &mask_return); + meta_error_trap_pop (screen->display, TRUE); + + window = meta_stack_get_default_focus_window_at_point (screen->stack, + screen->active_workspace, + not_this_one, + root_x_return, + root_y_return); + + return window; +} + +const MetaXineramaScreenInfo* +meta_screen_get_xinerama_for_rect (MetaScreen *screen, + MetaRectangle *rect) +{ + int i; + int best_xinerama, xinerama_score; + + if (screen->n_xinerama_infos == 1) + return &screen->xinerama_infos[0]; + + best_xinerama = 0; + xinerama_score = 0; + + for (i = 0; i < screen->n_xinerama_infos; i++) + { + MetaRectangle dest; + if (meta_rectangle_intersect (&screen->xinerama_infos[i].rect, + rect, + &dest)) + { + int cur = meta_rectangle_area (&dest); + if (cur > xinerama_score) + { + xinerama_score = cur; + best_xinerama = i; + } + } + } + + return &screen->xinerama_infos[best_xinerama]; +} + +const MetaXineramaScreenInfo* +meta_screen_get_xinerama_for_window (MetaScreen *screen, + MetaWindow *window) +{ + MetaRectangle window_rect; + + meta_window_get_outer_rect (window, &window_rect); + + return meta_screen_get_xinerama_for_rect (screen, &window_rect); +} + +const MetaXineramaScreenInfo* +meta_screen_get_xinerama_neighbor (MetaScreen *screen, + int which_xinerama, + MetaScreenDirection direction) +{ + MetaXineramaScreenInfo* input = screen->xinerama_infos + which_xinerama; + MetaXineramaScreenInfo* current; + int i; + + for (i = 0; i < screen->n_xinerama_infos; i++) + { + current = screen->xinerama_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_xinerama_list (MetaScreen *screen, + int** xineramas_list, + int* n_xineramas) +{ + const MetaXineramaScreenInfo* current; + const MetaXineramaScreenInfo* tmp; + GQueue* xinerama_queue; + int* visited; + int cur = 0; + int i; + + *n_xineramas = screen->n_xinerama_infos; + *xineramas_list = g_new (int, screen->n_xinerama_infos); + + /* we calculate a natural ordering by which to choose xineramas for + * window placement. We start at the current xinerama, and perform + * a breadth-first search of the xineramas starting from that + * xinerama. We choose preferentially left, then right, then down, + * then up. The visitation order produced by this traversal is the + * natural xinerama ordering. + */ + + visited = g_new (int, screen->n_xinerama_infos); + for (i = 0; i < screen->n_xinerama_infos; i++) + { + visited[i] = FALSE; + } + + current = meta_screen_get_current_xinerama (screen); + xinerama_queue = g_queue_new (); + g_queue_push_tail (xinerama_queue, (gpointer) current); + visited[current->number] = TRUE; + + while (!g_queue_is_empty (xinerama_queue)) + { + current = (const MetaXineramaScreenInfo*) + g_queue_pop_head (xinerama_queue); + + (*xineramas_list)[cur++] = current->number; + + /* enqueue each of the directions */ + tmp = meta_screen_get_xinerama_neighbor (screen, + current->number, + META_SCREEN_LEFT); + if (tmp && !visited[tmp->number]) + { + g_queue_push_tail (xinerama_queue, + (MetaXineramaScreenInfo*) tmp); + visited[tmp->number] = TRUE; + } + tmp = meta_screen_get_xinerama_neighbor (screen, + current->number, + META_SCREEN_RIGHT); + if (tmp && !visited[tmp->number]) + { + g_queue_push_tail (xinerama_queue, + (MetaXineramaScreenInfo*) tmp); + visited[tmp->number] = TRUE; + } + tmp = meta_screen_get_xinerama_neighbor (screen, + current->number, + META_SCREEN_UP); + if (tmp && !visited[tmp->number]) + { + g_queue_push_tail (xinerama_queue, + (MetaXineramaScreenInfo*) tmp); + visited[tmp->number] = TRUE; + } + tmp = meta_screen_get_xinerama_neighbor (screen, + current->number, + META_SCREEN_DOWN); + if (tmp && !visited[tmp->number]) + { + g_queue_push_tail (xinerama_queue, + (MetaXineramaScreenInfo*) tmp); + visited[tmp->number] = TRUE; + } + } + + /* in case we somehow missed some set of xineramas, go through the + * visited list and add in any xineramas that were missed + */ + for (i = 0; i < screen->n_xinerama_infos; i++) + { + if (visited[i] == FALSE) + { + (*xineramas_list)[cur++] = i; + } + } + + g_free (visited); + g_queue_free (xinerama_queue); +} + +const MetaXineramaScreenInfo* +meta_screen_get_current_xinerama (MetaScreen *screen) +{ + if (screen->n_xinerama_infos == 1) + return &screen->xinerama_infos[0]; + + /* Sadly, we have to do it this way. Yuck. + */ + + if (screen->display->xinerama_cache_invalidated) + { + Window root_return, child_return; + int win_x_return, win_y_return; + unsigned int mask_return; + int i; + MetaRectangle pointer_position; + + screen->display->xinerama_cache_invalidated = FALSE; + + pointer_position.width = pointer_position.height = 1; + XQueryPointer (screen->display->xdisplay, + screen->xroot, + &root_return, + &child_return, + &pointer_position.x, + &pointer_position.y, + &win_x_return, + &win_y_return, + &mask_return); + + screen->last_xinerama_index = 0; + for (i = 0; i < screen->n_xinerama_infos; i++) + { + if (meta_rectangle_contains_rect (&screen->xinerama_infos[i].rect, + &pointer_position)) + { + screen->last_xinerama_index = i; + break; + } + } + + meta_topic (META_DEBUG_XINERAMA, + "Rechecked current Xinerama, now %d\n", + screen->last_xinerama_index); + } + + return &screen->xinerama_infos[screen->last_xinerama_index]; +} + +#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; + + 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); +} + +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, FALSE); + + 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_xineramas (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, FALSE); +} + +static gboolean +set_work_area_idle_func (MetaScreen *screen) +{ + meta_topic (META_DEBUG_WORKAREA, + "Running work area idle function\n"); + + screen->work_area_idle = 0; + + set_work_area_hint (screen); + + return FALSE; +} + +void +meta_screen_queue_workarea_recalc (MetaScreen *screen) +{ + /* Recompute work area in an idle */ + if (screen->work_area_idle == 0) + { + meta_topic (META_DEBUG_WORKAREA, + "Adding work area hint idle function\n"); + screen->work_area_idle = + g_idle_add_full (META_PRIORITY_WORK_AREA_HINT, + (GSourceFunc) set_work_area_idle_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); +} + +void +meta_screen_resize (MetaScreen *screen, + int width, + int height) +{ + screen->rect.width = width; + screen->rect.height = height; + + reload_xinerama_infos (screen); + set_desktop_geometry_hint (screen); + + /* Queue a resize on all the windows */ + meta_screen_foreach_window (screen, meta_screen_resize_func, 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, FALSE); +} + +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); + + 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 (1000, + startup_sequence_timeout, + screen); + + 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); + sn_startup_sequence_unref (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); +} + +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); + + 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; + } +} +#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; +} + +MetaDisplay * +meta_screen_get_display (MetaScreen *screen) +{ + return screen->display; +} + +Window +meta_screen_get_xroot (MetaScreen *screen) +{ + return screen->xroot; +} + +void +meta_screen_get_size (MetaScreen *screen, + int *width, + int *height) +{ + *width = screen->rect.width; + *height = screen->rect.height; +} + +gpointer +meta_screen_get_compositor_data (MetaScreen *screen) +{ + return screen->compositor_data; +} + +void +meta_screen_set_compositor_data (MetaScreen *screen, + gpointer compositor) +{ + screen->compositor_data = compositor; +} + +#ifdef HAVE_COMPOSITE_EXTENSIONS +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); +} +#endif /* HAVE_COMPOSITE_EXTENSIONS */ |