/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ #include "shell-global.h" #include "shell-wm.h" #include "display.h" #include #include #include #include #include #include #include #include #include struct _ShellGlobal { GObject parent; MutterPlugin *plugin; ShellWM *wm; gboolean keyboard_grabbed; const char *imagedir; }; enum { PROP_0, PROP_OVERLAY_GROUP, PROP_SCREEN, PROP_SCREEN_WIDTH, PROP_SCREEN_HEIGHT, PROP_STAGE, PROP_WINDOW_GROUP, PROP_WINDOW_MANAGER, PROP_IMAGEDIR }; /* Signals */ enum { PANEL_RUN_DIALOG, PANEL_MAIN_MENU, LAST_SIGNAL }; G_DEFINE_TYPE(ShellGlobal, shell_global, G_TYPE_OBJECT); static guint shell_global_signals [LAST_SIGNAL] = { 0 }; static void shell_global_set_property(GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { switch (prop_id) { default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void shell_global_get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { ShellGlobal *global = SHELL_GLOBAL (object); switch (prop_id) { case PROP_OVERLAY_GROUP: g_value_set_object (value, mutter_plugin_get_overlay_group (global->plugin)); break; case PROP_SCREEN: g_value_set_object (value, mutter_plugin_get_screen (global->plugin)); break; case PROP_SCREEN_WIDTH: { int width, height; mutter_plugin_query_screen_size (global->plugin, &width, &height); g_value_set_int (value, width); } break; case PROP_SCREEN_HEIGHT: { int width, height; mutter_plugin_query_screen_size (global->plugin, &width, &height); g_value_set_int (value, height); } break; case PROP_STAGE: g_value_set_object (value, mutter_plugin_get_stage (global->plugin)); break; case PROP_WINDOW_GROUP: g_value_set_object (value, mutter_plugin_get_window_group (global->plugin)); break; case PROP_WINDOW_MANAGER: g_value_set_object (value, global->wm); break; case PROP_IMAGEDIR: g_value_set_string (value, global->imagedir); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void shell_global_init (ShellGlobal *global) { const char *datadir = g_getenv ("GNOME_SHELL_DATADIR"); char *imagedir; if (!datadir) datadir = GNOME_SHELL_DATADIR; /* We make sure imagedir ends with a '/', since the JS won't have * access to g_build_filename() and so will end up just * concatenating global.imagedir to a filename. */ imagedir = g_build_filename (datadir, "images/", NULL); if (g_file_test (imagedir, G_FILE_TEST_IS_DIR)) global->imagedir = imagedir; else { g_free (imagedir); global->imagedir = g_strdup_printf ("%s/", datadir); } } static void shell_global_class_init (ShellGlobalClass *klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); gobject_class->get_property = shell_global_get_property; gobject_class->set_property = shell_global_set_property; shell_global_signals[PANEL_RUN_DIALOG] = g_signal_new ("panel-run-dialog", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ShellGlobalClass, panel_run_dialog), NULL, NULL, g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT); shell_global_signals[PANEL_MAIN_MENU] = g_signal_new ("panel-main-menu", G_TYPE_FROM_CLASS (klass), G_SIGNAL_RUN_LAST, G_STRUCT_OFFSET (ShellGlobalClass, panel_main_menu), NULL, NULL, g_cclosure_marshal_VOID__INT, G_TYPE_NONE, 1, G_TYPE_INT); g_object_class_install_property (gobject_class, PROP_OVERLAY_GROUP, g_param_spec_object ("overlay-group", "Overlay Group", "Actor holding objects that appear above the desktop contents", CLUTTER_TYPE_ACTOR, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_SCREEN, g_param_spec_object ("screen", "Screen", "Metacity screen object for the shell", META_TYPE_SCREEN, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_SCREEN_WIDTH, g_param_spec_int ("screen-width", "Screen Width", "Screen width, in pixels", 0, G_MAXINT, 1, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_SCREEN_HEIGHT, g_param_spec_int ("screen-height", "Screen Height", "Screen height, in pixels", 0, G_MAXINT, 1, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_STAGE, g_param_spec_object ("stage", "Stage", "Stage holding the desktop scene graph", CLUTTER_TYPE_ACTOR, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_WINDOW_GROUP, g_param_spec_object ("window-group", "Window Group", "Actor holding window actors", CLUTTER_TYPE_ACTOR, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_WINDOW_MANAGER, g_param_spec_object ("window-manager", "Window Manager", "Window management interface", SHELL_TYPE_WM, G_PARAM_READABLE)); g_object_class_install_property (gobject_class, PROP_IMAGEDIR, g_param_spec_string ("imagedir", "Image directory", "Directory containing gnome-shell image files", NULL, G_PARAM_READABLE)); } /** * shell_clutter_texture_set_from_pixbuf: * texture: #ClutterTexture to be modified * pixbuf: #GdkPixbuf to set as an image for #ClutterTexture * * Convenience function for setting an image for #ClutterTexture based on #GdkPixbuf. * Copied from an example posted by hp in this thread http://mail.gnome.org/archives/gtk-devel-list/2008-September/msg00218.html * * Return value: %TRUE on success, %FALSE on failure */ gboolean shell_clutter_texture_set_from_pixbuf (ClutterTexture *texture, GdkPixbuf *pixbuf) { return clutter_texture_set_from_rgb_data (texture, gdk_pixbuf_get_pixels (pixbuf), gdk_pixbuf_get_has_alpha (pixbuf), gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf), gdk_pixbuf_get_rowstride (pixbuf), gdk_pixbuf_get_has_alpha (pixbuf) ? 4 : 3, 0, NULL); } static GnomeThumbnailFactory *thumbnail_factory; /** * shell_get_thumbnail_for_recent_info: * * @recent_info: #GtkRecentInfo for which to return a thumbnail * * Return value: #GdkPixbuf containing a thumbnail for the file described by #GtkRecentInfo * if the thumbnail exists or can be generated, %NULL otherwise */ GdkPixbuf * shell_get_thumbnail_for_recent_info(GtkRecentInfo *recent_info) { char *existing_thumbnail; GdkPixbuf *pixbuf = NULL; const gchar *uri = gtk_recent_info_get_uri (recent_info); time_t mtime = gtk_recent_info_get_modified (recent_info); const gchar *mime_type = gtk_recent_info_get_mime_type (recent_info); GError *error = NULL; if (thumbnail_factory == NULL) thumbnail_factory = gnome_thumbnail_factory_new (GNOME_THUMBNAIL_SIZE_NORMAL); existing_thumbnail = gnome_thumbnail_factory_lookup (thumbnail_factory, uri, mtime); if (existing_thumbnail != NULL) { pixbuf = gdk_pixbuf_new_from_file(existing_thumbnail, &error); if (error != NULL) { g_warning("Could not generate a pixbuf from file %s: %s", existing_thumbnail, error->message); g_clear_error (&error); } } else if (gnome_thumbnail_factory_can_thumbnail (thumbnail_factory, uri, mime_type, mtime)) { pixbuf = gnome_thumbnail_factory_generate_thumbnail (thumbnail_factory, uri, mime_type); if (pixbuf == NULL) { g_warning ("Could not generate thumbnail for %s", uri); } else { // we need to save the thumbnail so that we don't need to generate it again in the future gnome_thumbnail_factory_save_thumbnail (thumbnail_factory, pixbuf, uri, mtime); } } return pixbuf; } /** * shell_global_get: * * Gets the singleton global object that represents the desktop. * * Return value: (transfer none): the singleton global object */ ShellGlobal * shell_global_get (void) { static ShellGlobal *the_object = NULL; if (!the_object) the_object = g_object_new (SHELL_TYPE_GLOBAL, 0); return the_object; } /** * shell_global_set_stage_input_area: * x: X coordinate of rectangle * y: Y coordinate of rectangle * width: width of rectangle * height: height of rectangle * * Sets the area of the stage that is responsive to mouse clicks as * a rectangle. */ void shell_global_set_stage_input_area (ShellGlobal *global, int x, int y, int width, int height) { g_return_if_fail (SHELL_IS_GLOBAL (global)); mutter_plugin_set_stage_input_area (global->plugin, x, y, width, height); } /** * shell_global_get_windows: * * Gets the list of MutterWindows for the plugin's screen * * Return value: (element-type MutterWindow) (transfer none): the list of windows */ GList * shell_global_get_windows (ShellGlobal *global) { g_return_val_if_fail (SHELL_IS_GLOBAL (global), NULL); return mutter_plugin_get_windows (global->plugin); } void _shell_global_set_plugin (ShellGlobal *global, MutterPlugin *plugin) { g_return_if_fail (SHELL_IS_GLOBAL (global)); g_return_if_fail (global->plugin == NULL); global->plugin = plugin; global->wm = shell_wm_new (plugin); } /** * shell_global_grab_keyboard: * @global: a #ShellGlobal * * Grab the keyboard to the stage window. The stage will receive * all keyboard events until shell_global_ungrab_keyboard() is called. * This is appropriate to do when the desktop goes into a special * mode where no normal global key shortcuts or application keyboard * processing should happen. */ gboolean shell_global_grab_keyboard (ShellGlobal *global) { MetaScreen *screen = mutter_plugin_get_screen (global->plugin); MetaDisplay *display = meta_screen_get_display (screen); Display *xdisplay = meta_display_get_xdisplay (display); ClutterStage *stage = CLUTTER_STAGE (mutter_plugin_get_stage (global->plugin)); Window stagewin = clutter_x11_get_stage_window (stage); /* FIXME: we need to coordinate with the rest of Metacity or we * may grab the keyboard away from other portions of Metacity * and leave Metacity in a confused state. An X client is allowed * to overgrab itself, though not allowed to grab they keyboard * away from another applications. */ if (global->keyboard_grabbed) return FALSE; if (XGrabKeyboard (xdisplay, stagewin, False, /* owner_events - steal events from the rest of metacity */ GrabModeAsync, GrabModeAsync, CurrentTime) != Success) return FALSE; /* probably AlreadyGrabbed, some other app has a keyboard grab */ global->keyboard_grabbed = TRUE; return TRUE; } /** * shell_global_ungrab_keyboard: * @global: a #ShellGlobal * * Undoes the effect of shell_global_grab_keyboard */ void shell_global_ungrab_keyboard (ShellGlobal *global) { MetaScreen *screen; MetaDisplay *display; Display *xdisplay; g_return_if_fail (global->keyboard_grabbed); screen = mutter_plugin_get_screen (global->plugin); display = meta_screen_get_display (screen); xdisplay = meta_display_get_xdisplay (display); XUngrabKeyboard (xdisplay, CurrentTime); global->keyboard_grabbed = FALSE; } /** * shell_global_reexec_self: * @global: A #ShellGlobal * * Restart the current process. Only intended for development purposes. */ void shell_global_reexec_self (ShellGlobal *global) { GPtrArray *arr; gsize len; char *buf; char *buf_p; char *buf_end; GError *error = NULL; /* Linux specific (I think, anyways). */ if (!g_file_get_contents ("/proc/self/cmdline", &buf, &len, &error)) { g_warning ("failed to get /proc/self/cmdline: %s", error->message); return; } buf_end = buf+len; arr = g_ptr_array_new (); /* The cmdline file is NUL-separated */ for (buf_p = buf; buf_p < buf_end; buf_p = buf_p + strlen (buf_p) + 1) g_ptr_array_add (arr, buf_p); g_ptr_array_add (arr, NULL); execvp (arr->pdata[0], (char**)arr->pdata); g_warning ("failed to reexec: %s", g_strerror (errno)); g_ptr_array_free (arr, TRUE); } /** * shell_global_late_init * * Perform once-only global initialization; currently this executes * the external tasklist process and grabs the org.gnome.Shell DBus name. */ void shell_global_late_init (ShellGlobal *global) { static gboolean initialized = FALSE; GError *error = NULL; DBusGConnection *session; DBusGProxy *bus; guint32 request_name_result; const char* panel_args[] = {"gnomeshell-taskpanel", NULL}; if (initialized) return; initialized = TRUE; session = dbus_g_bus_get (DBUS_BUS_SESSION, NULL); bus = dbus_g_proxy_new_for_name (session, DBUS_SERVICE_DBUS, DBUS_PATH_DBUS, DBUS_INTERFACE_DBUS); if (!dbus_g_proxy_call (bus, "RequestName", &error, G_TYPE_STRING, "org.gnome.Shell", G_TYPE_UINT, 0, G_TYPE_INVALID, G_TYPE_UINT, &request_name_result, G_TYPE_INVALID)) { g_print ("failed to acquire org.gnome.Shell: %s\n", error->message); exit (0); } if (!g_spawn_async (NULL, &panel_args, NULL, G_SPAWN_SEARCH_PATH, NULL, NULL, NULL, &error)) { g_critical ("failed to execute %s: %s", panel_args[0], error->message); g_clear_error (&error); } g_object_unref (bus); }