From e46b4adef5c6c6805b3ca6dbfbe99a4299252514 Mon Sep 17 00:00:00 2001 From: haxar Date: Tue, 21 Feb 2012 20:14:01 -0800 Subject: gsd to msd complete rename patch by NiceandGently; file rename commit --- plugins/background/msd-background-manager.c | 579 ++++++++++++++++++++++++++++ 1 file changed, 579 insertions(+) create mode 100644 plugins/background/msd-background-manager.c (limited to 'plugins/background/msd-background-manager.c') diff --git a/plugins/background/msd-background-manager.c b/plugins/background/msd-background-manager.c new file mode 100644 index 0000000..25ab7ec --- /dev/null +++ b/plugins/background/msd-background-manager.c @@ -0,0 +1,579 @@ +/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- + * + * Copyright © 2001 Ximian, Inc. + * Copyright (C) 2007 William Jon McCann + * Copyright 2007 Red Hat, Inc. + * + * 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 +#include +#include +#include +#include +#include +#include + +#include + +#include + +#include +#include +#include +#include +#include + +#define MATE_DESKTOP_USE_UNSTABLE_API +#include +#include + +#include "mate-settings-profile.h" +#include "msd-background-manager.h" + +#define CAJA_SHOW_DESKTOP_KEY "/apps/caja/preferences/show_desktop" + +#define MSD_BACKGROUND_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), MSD_TYPE_BACKGROUND_MANAGER, MsdBackgroundManagerPrivate)) + +struct MsdBackgroundManagerPrivate +{ + MateConfClient *client; + MateBG *bg; + guint bg_notify_id; + guint timeout_id; + + DBusConnection *dbus_connection; +}; + +static void msd_background_manager_class_init (MsdBackgroundManagerClass *klass); +static void msd_background_manager_init (MsdBackgroundManager *background_manager); +static void msd_background_manager_finalize (GObject *object); + +G_DEFINE_TYPE (MsdBackgroundManager, msd_background_manager, G_TYPE_OBJECT) + +static gpointer manager_object = NULL; + +static gboolean +caja_is_running (void) +{ + Atom window_id_atom; + Window caja_xid; + Atom actual_type; + int actual_format; + unsigned long nitems; + unsigned long bytes_after; + unsigned char *data; + int retval; + Atom wmclass_atom; + gboolean running; + gint error; + + window_id_atom = XInternAtom (GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), + "CAJA_DESKTOP_WINDOW_ID", True); + + if (window_id_atom == None) { + return FALSE; + } + + retval = XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), + GDK_ROOT_WINDOW (), + window_id_atom, + 0, + 1, + False, + XA_WINDOW, + &actual_type, + &actual_format, + &nitems, + &bytes_after, + &data); + + if (data != NULL) { + caja_xid = *(Window *) data; + XFree (data); + } else { + return FALSE; + } + + if (actual_type != XA_WINDOW) { + return FALSE; + } + if (actual_format != 32) { + return FALSE; + } + + wmclass_atom = XInternAtom (GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), "WM_CLASS", False); + + gdk_error_trap_push (); + + retval = XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), + caja_xid, + wmclass_atom, + 0, + 24, + False, + XA_STRING, + &actual_type, + &actual_format, + &nitems, + &bytes_after, + &data); + + error = gdk_error_trap_pop (); + + if (error == BadWindow) { + return FALSE; + } + + if (actual_type == XA_STRING && + nitems == 24 && + bytes_after == 0 && + actual_format == 8 && + data != NULL && + !strcmp ((char *)data, "desktop_window") && + !strcmp ((char *)data + strlen ((char *)data) + 1, "Caja")) { + running = TRUE; + } else { + running = FALSE; + } + + if (data != NULL) { + XFree (data); + } + + return running; +} + +static void +draw_background (MsdBackgroundManager *manager, + gboolean use_crossfade) +{ + GdkDisplay *display; + int n_screens; + int i; + + if (caja_is_running ()) { + return; + } + + mate_settings_profile_start (NULL); + + display = gdk_display_get_default (); + n_screens = gdk_display_get_n_screens (display); + + for (i = 0; i < n_screens; ++i) { + GdkScreen *screen; + GdkWindow *root_window; + GdkPixmap *pixmap; + + screen = gdk_display_get_screen (display, i); + + root_window = gdk_screen_get_root_window (screen); + + pixmap = mate_bg_create_pixmap (manager->priv->bg, + root_window, + gdk_screen_get_width (screen), + gdk_screen_get_height (screen), + TRUE); + + if (use_crossfade) { + MateBGCrossfade *fade; + + fade = mate_bg_set_pixmap_as_root_with_crossfade (screen, pixmap); + g_signal_connect (fade, "finished", + G_CALLBACK (g_object_unref), NULL); + } else { + mate_bg_set_pixmap_as_root (screen, pixmap); + } + + g_object_unref (pixmap); + } + + mate_settings_profile_end (NULL); +} + +static void +on_bg_changed (MateBG *bg, + MsdBackgroundManager *manager) +{ + draw_background (manager, TRUE); +} + +static void +on_bg_transitioned (MateBG *bg, + MsdBackgroundManager *manager) +{ + draw_background (manager, FALSE); +} + +static void +mateconf_changed_callback (MateConfClient *client, + guint cnxn_id, + MateConfEntry *entry, + MsdBackgroundManager *manager) +{ + mate_bg_load_from_preferences (manager->priv->bg, + manager->priv->client); +} + +static void +watch_bg_preferences (MsdBackgroundManager *manager) +{ + g_assert (manager->priv->bg_notify_id == 0); + + mateconf_client_add_dir (manager->priv->client, + MATE_BG_KEY_DIR, + MATECONF_CLIENT_PRELOAD_NONE, + NULL); + manager->priv->bg_notify_id = mateconf_client_notify_add (manager->priv->client, + MATE_BG_KEY_DIR, + (MateConfClientNotifyFunc)mateconf_changed_callback, + manager, + NULL, + NULL); +} + +static void +setup_bg (MsdBackgroundManager *manager) +{ + g_return_if_fail (manager->priv->bg == NULL); + + manager->priv->bg = mate_bg_new (); + + g_signal_connect (manager->priv->bg, + "changed", + G_CALLBACK (on_bg_changed), + manager); + + g_signal_connect (manager->priv->bg, + "transitioned", + G_CALLBACK (on_bg_transitioned), + manager); + + watch_bg_preferences (manager); + mate_bg_load_from_preferences (manager->priv->bg, + manager->priv->client); +} + +static gboolean +queue_draw_background (MsdBackgroundManager *manager) +{ + manager->priv->timeout_id = 0; + if (caja_is_running ()) { + return FALSE; + } + setup_bg (manager); + draw_background (manager, FALSE); + return FALSE; +} + +static DBusHandlerResult +on_bus_message (DBusConnection *connection, + DBusMessage *message, + void *user_data) +{ + MsdBackgroundManager *manager = user_data; + + if (dbus_message_is_signal (message, + "org.mate.SessionManager", + "SessionRunning")) { + /* If the session finishes then check if caja is + * running and if not, set the background. + * + * We wait a few seconds after the session is up + * because caja tells the session manager that its + * ready before it sets the background. + */ + manager->priv->timeout_id = g_timeout_add_seconds (8, + (GSourceFunc) + queue_draw_background, + manager); + dbus_connection_remove_filter (connection, + on_bus_message, + manager); + + manager->priv->dbus_connection = NULL; + } + + return DBUS_HANDLER_RESULT_NOT_YET_HANDLED; +} + +static void +draw_background_after_session_loads (MsdBackgroundManager *manager) +{ + DBusConnection *connection; + + connection = dbus_bus_get (DBUS_BUS_SESSION, NULL); + + if (connection == NULL) { + return; + } + + if (!dbus_connection_add_filter (connection, on_bus_message, manager, NULL)) { + return; + }; + + manager->priv->dbus_connection = connection; +} + +static void +on_screen_size_changed (GdkScreen *screen, + MsdBackgroundManager *manager) +{ + gboolean caja_show_desktop; + + caja_show_desktop = mateconf_client_get_bool (manager->priv->client, + CAJA_SHOW_DESKTOP_KEY, + NULL); + + if (!caja_is_running () || !caja_show_desktop) { + if (manager->priv->bg == NULL) { + setup_bg (manager); + } + draw_background (manager, FALSE); + } +} + +static void +disconnect_screen_signals (MsdBackgroundManager *manager) +{ + GdkDisplay *display; + int i; + int n_screens; + + display = gdk_display_get_default (); + n_screens = gdk_display_get_n_screens (display); + + for (i = 0; i < n_screens; ++i) { + GdkScreen *screen; + screen = gdk_display_get_screen (display, i); + g_signal_handlers_disconnect_by_func (screen, + G_CALLBACK (on_screen_size_changed), + manager); + } +} + +static void +connect_screen_signals (MsdBackgroundManager *manager) +{ + GdkDisplay *display; + int i; + int n_screens; + + display = gdk_display_get_default (); + n_screens = gdk_display_get_n_screens (display); + + for (i = 0; i < n_screens; ++i) { + GdkScreen *screen; + screen = gdk_display_get_screen (display, i); + g_signal_connect (screen, + "monitors-changed", + G_CALLBACK (on_screen_size_changed), + manager); + g_signal_connect (screen, + "size-changed", + G_CALLBACK (on_screen_size_changed), + manager); + } +} + +gboolean +msd_background_manager_start (MsdBackgroundManager *manager, + GError **error) +{ + gboolean caja_show_desktop; + + g_debug ("Starting background manager"); + mate_settings_profile_start (NULL); + + manager->priv->client = mateconf_client_get_default (); + + /* If this is set, caja will draw the background and is + * almost definitely in our session. however, it may not be + * running yet (so is_caja_running() will fail). so, on + * startup, just don't do anything if this key is set so we + * don't waste time setting the background only to have + * caja overwrite it. + */ + caja_show_desktop = mateconf_client_get_bool (manager->priv->client, + CAJA_SHOW_DESKTOP_KEY, + NULL); + + if (!caja_show_desktop) { + setup_bg (manager); + } else { + draw_background_after_session_loads (manager); + } + + connect_screen_signals (manager); + + mate_settings_profile_end (NULL); + + return TRUE; +} + +void +msd_background_manager_stop (MsdBackgroundManager *manager) +{ + MsdBackgroundManagerPrivate *p = manager->priv; + + g_debug ("Stopping background manager"); + + disconnect_screen_signals (manager); + + if (manager->priv->dbus_connection != NULL) { + dbus_connection_remove_filter (manager->priv->dbus_connection, + on_bus_message, + manager); + } + + if (manager->priv->bg_notify_id != 0) { + mateconf_client_remove_dir (manager->priv->client, + MATE_BG_KEY_DIR, + NULL); + mateconf_client_notify_remove (manager->priv->client, + manager->priv->bg_notify_id); + manager->priv->bg_notify_id = 0; + } + + if (p->client != NULL) { + g_object_unref (p->client); + p->client = NULL; + } + + if (p->timeout_id != 0) { + g_source_remove (p->timeout_id); + p->timeout_id = 0; + } + + if (p->bg != NULL) { + g_object_unref (p->bg); + p->bg = NULL; + } +} + +static void +msd_background_manager_set_property (GObject *object, + guint prop_id, + const GValue *value, + GParamSpec *pspec) +{ + MsdBackgroundManager *self; + + self = MSD_BACKGROUND_MANAGER (object); + + switch (prop_id) { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static void +msd_background_manager_get_property (GObject *object, + guint prop_id, + GValue *value, + GParamSpec *pspec) +{ + MsdBackgroundManager *self; + + self = MSD_BACKGROUND_MANAGER (object); + + switch (prop_id) { + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); + break; + } +} + +static GObject * +msd_background_manager_constructor (GType type, + guint n_construct_properties, + GObjectConstructParam *construct_properties) +{ + MsdBackgroundManager *background_manager; + MsdBackgroundManagerClass *klass; + + klass = MSD_BACKGROUND_MANAGER_CLASS (g_type_class_peek (MSD_TYPE_BACKGROUND_MANAGER)); + + background_manager = MSD_BACKGROUND_MANAGER (G_OBJECT_CLASS (msd_background_manager_parent_class)->constructor (type, + n_construct_properties, + construct_properties)); + + return G_OBJECT (background_manager); +} + +static void +msd_background_manager_dispose (GObject *object) +{ + MsdBackgroundManager *background_manager; + + background_manager = MSD_BACKGROUND_MANAGER (object); + + G_OBJECT_CLASS (msd_background_manager_parent_class)->dispose (object); +} + +static void +msd_background_manager_class_init (MsdBackgroundManagerClass *klass) +{ + GObjectClass *object_class = G_OBJECT_CLASS (klass); + + object_class->get_property = msd_background_manager_get_property; + object_class->set_property = msd_background_manager_set_property; + object_class->constructor = msd_background_manager_constructor; + object_class->dispose = msd_background_manager_dispose; + object_class->finalize = msd_background_manager_finalize; + + g_type_class_add_private (klass, sizeof (MsdBackgroundManagerPrivate)); +} + +static void +msd_background_manager_init (MsdBackgroundManager *manager) +{ + manager->priv = MSD_BACKGROUND_MANAGER_GET_PRIVATE (manager); +} + +static void +msd_background_manager_finalize (GObject *object) +{ + MsdBackgroundManager *background_manager; + + g_return_if_fail (object != NULL); + g_return_if_fail (MSD_IS_BACKGROUND_MANAGER (object)); + + background_manager = MSD_BACKGROUND_MANAGER (object); + + g_return_if_fail (background_manager->priv != NULL); + + G_OBJECT_CLASS (msd_background_manager_parent_class)->finalize (object); +} + +MsdBackgroundManager * +msd_background_manager_new (void) +{ + if (manager_object != NULL) { + g_object_ref (manager_object); + } else { + manager_object = g_object_new (MSD_TYPE_BACKGROUND_MANAGER, NULL); + g_object_add_weak_pointer (manager_object, + (gpointer *) &manager_object); + } + + return MSD_BACKGROUND_MANAGER (manager_object); +} -- cgit v1.2.1