From c12ffd128cbe0d90443edf85025a421ab2c027fb Mon Sep 17 00:00:00 2001 From: Jasmine Hassan Date: Sat, 8 Dec 2012 01:17:08 +0200 Subject: [background] cleanup and refactor, fix several issues Namely: 1. In caja_is_drawing..(), only get atom for WM_CLASS property if it exists. 2. Cache gsettings draw-background & show-desktop-icons key-values, and only update when either actually changes, to avoid unnecessary queries to the dconf-service. 3. Avoid conflicts between settings_change_event_cb() & on_bg_handling_changed(). 4. Keep track of screen sizes, to ensure size actually changed when signalled, to avoid double-redraw on an extraneous signal, which can lockup the daemon, because we draw immediately (w/out g_idle_add). Though we don't fade in re-draws triggered by size/monitors-changed signals, making all re-draws queued causes issues with fading, when we do fade (on bg change), and queueing is unnecessary here anyway. 5. Track a redraw in progress, to avoid any possible (and unforseeable) clashes. --- plugins/background/msd-background-manager.c | 643 ++++++++++++++-------------- 1 file changed, 314 insertions(+), 329 deletions(-) (limited to 'plugins/background') diff --git a/plugins/background/msd-background-manager.c b/plugins/background/msd-background-manager.c index 3a3dd62..e1a366f 100644 --- a/plugins/background/msd-background-manager.c +++ b/plugins/background/msd-background-manager.c @@ -1,8 +1,9 @@ /* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- * - * Copyright © 2001 Ximian, Inc. + * Copyright (C) 2001 Ximian, Inc. * Copyright (C) 2007 William Jon McCann - * Copyright 2007 Red Hat, Inc. + * Copyright (C) 2007 Red Hat, Inc. + * Copyright (C) 2012 Jasmine Hassan * * 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 @@ -59,151 +60,101 @@ #define MSD_BACKGROUND_MANAGER_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), MSD_TYPE_BACKGROUND_MANAGER, MsdBackgroundManagerPrivate)) struct MsdBackgroundManagerPrivate { - GSettings *settings; - MateBG *bg; - guint timeout_id; - + GSettings *settings; + MateBG *bg; + cairo_surface_t *surface; MateBGCrossfade *fade; + GList *scr_sizes; - GDBusProxy *proxy; - guint proxy_signal_id; -}; + gboolean msd_can_draw; + gboolean caja_can_draw; + gboolean do_fade; + gboolean draw_in_progress; -static void -msd_background_manager_class_init (MsdBackgroundManagerClass* klass); + guint timeout_id; -static void - -msd_background_manager_init (MsdBackgroundManager* background_manager); - -static void -msd_background_manager_finalize (GObject* object); - -static void setup_bg (MsdBackgroundManager *manager); -static void connect_screen_signals (MsdBackgroundManager *manager); + GDBusProxy *proxy; + guint proxy_signal_id; +}; -G_DEFINE_TYPE(MsdBackgroundManager, msd_background_manager, G_TYPE_OBJECT) +G_DEFINE_TYPE (MsdBackgroundManager, msd_background_manager, G_TYPE_OBJECT) static gpointer manager_object = NULL; +/* Whether MSD is allowed to draw background */ static gboolean -do_draw_background (MsdBackgroundManager *manager) +msd_can_draw_bg (MsdBackgroundManager *manager) { - return g_settings_get_boolean (manager->priv->settings, - MATE_BG_KEY_DRAW_BACKGROUND); + return g_settings_get_boolean (manager->priv->settings, MATE_BG_KEY_DRAW_BACKGROUND); } +/* Whether to change background with a fade effect */ static gboolean -do_crossfade_background (MsdBackgroundManager *manager) +can_fade_bg (MsdBackgroundManager *manager) { - return g_settings_get_boolean (manager->priv->settings, - MATE_BG_KEY_BACKGROUND_FADE); + return g_settings_get_boolean (manager->priv->settings, MATE_BG_KEY_BACKGROUND_FADE); } +/* Whether Caja is configured to draw desktop (show-desktop-icons) */ static gboolean -caja_is_drawing_background (MsdBackgroundManager *manager) +caja_can_draw_bg (MsdBackgroundManager *manager) { - Atom window_id_atom; - Window caja_xid; - Atom actual_type; - int actual_format; - unsigned long nitems; - unsigned long bytes_after; - unsigned char* data; - Atom wmclass_atom; - gboolean running; - gint error; - gboolean show_desktop_icons; - - show_desktop_icons = g_settings_get_boolean (manager->priv->settings, - MATE_BG_KEY_SHOW_DESKTOP); - if (!show_desktop_icons) { - return FALSE; - } - - window_id_atom = XInternAtom(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), - "CAJA_DESKTOP_WINDOW_ID", True); + return g_settings_get_boolean (manager->priv->settings, MATE_BG_KEY_SHOW_DESKTOP); +} - if (window_id_atom == None) { +static gboolean +caja_is_drawing_bg (MsdBackgroundManager *manager) +{ + Display *display = gdk_x11_get_default_xdisplay (); + Window window = gdk_x11_get_default_root_xwindow (); + Atom caja_prop, wmclass_prop, type; + Window caja_window; + int format; + unsigned long nitems, after; + unsigned char *data; + gboolean running = FALSE; + + if (!manager->priv->caja_can_draw) return FALSE; - } - 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 - { + caja_prop = XInternAtom (display, "CAJA_DESKTOP_WINDOW_ID", True); + if (caja_prop == None) return FALSE; - } - if (actual_type != XA_WINDOW) - { + XGetWindowProperty (display, window, caja_prop, 0, 1, False, + XA_WINDOW, &type, &format, &nitems, &after, &data); + + if (data == NULL) return FALSE; - } - if (actual_format != 32) - { + caja_window = *(Window *) data; + XFree (data); + + if (type != XA_WINDOW || format != 32) return FALSE; - } - wmclass_atom = XInternAtom(GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), "WM_CLASS", False); + wmclass_prop = XInternAtom (display, "WM_CLASS", True); + if (wmclass_prop == None) + return FALSE; gdk_error_trap_push(); - XGetWindowProperty (GDK_DISPLAY_XDISPLAY(gdk_display_get_default()), - caja_xid, - wmclass_atom, - 0, - 20, - False, - XA_STRING, - &actual_type, - &actual_format, - &nitems, - &bytes_after, - &data); - - error = gdk_error_trap_pop(); - - if (error == BadWindow) - { + XGetWindowProperty (display, caja_window, wmclass_prop, 0, 20, False, + XA_STRING, &type, &format, &nitems, &after, &data); + + XSync (display, False); + + if (gdk_error_trap_pop() == BadWindow || data == NULL) return FALSE; - } - if (actual_type == XA_STRING && - nitems == 20 && - bytes_after == 0 && - actual_format == 8 && - data != NULL && - !strcmp((char*) data, "desktop_window") && - !strcmp((char*) data + strlen((char*) data) + 1, "Caja")) + /* See: caja_desktop_window_new(), in src/caja-desktop-window.c */ + if (nitems == 20 && after == 0 && format == 8 && + !strcmp((char*) data, "desktop_window") && + !strcmp((char*) data + strlen((char*) data) + 1, "Caja")) { running = TRUE; } - else - { - running = FALSE; - } - - if (data != NULL) - { - XFree(data); - } + XFree (data); return running; } @@ -218,139 +169,255 @@ free_fade (MsdBackgroundManager *manager) } static void -draw_background (MsdBackgroundManager *manager, - gboolean use_crossfade) +free_bg_surface (MsdBackgroundManager *manager) { - GdkDisplay *display; - int n_screens; - int i; + if (manager->priv->surface != NULL) { + cairo_surface_destroy (manager->priv->surface); + manager->priv->surface = NULL; + } +} - if (caja_is_drawing_background (manager) || !do_draw_background (manager)) - { - return; +static void +free_scr_sizes (MsdBackgroundManager *manager) +{ + if (manager->priv->scr_sizes != NULL) { + g_list_foreach (manager->priv->scr_sizes, (GFunc)g_free, NULL); + g_list_free (manager->priv->scr_sizes); + manager->priv->scr_sizes = NULL; } +} - mate_settings_profile_start(NULL); +static gboolean +real_draw_bg (MsdBackgroundManager *manager, + GdkScreen *screen) +{ + MsdBackgroundManagerPrivate *p = manager->priv; + GdkWindow *window = gdk_screen_get_root_window (screen); + gint scr_num = gdk_screen_get_number (screen); + gint width = gdk_screen_get_width (screen); + gint height = gdk_screen_get_height (screen); - display = gdk_display_get_default(); - n_screens = gdk_display_get_n_screens(display); + free_bg_surface (manager); + p->surface = mate_bg_create_surface (p->bg, window, width, height, TRUE); - for (i = 0; i < n_screens; ++i) + if (p->do_fade) + { + free_fade (manager); + p->fade = mate_bg_set_surface_as_root_with_crossfade (screen, p->surface); + g_signal_connect_swapped (p->fade, "finished", G_CALLBACK (free_fade), manager); + } + else { - GdkScreen *screen; - cairo_surface_t *surface; + mate_bg_set_surface_as_root (screen, p->surface); + } + p->scr_sizes = g_list_prepend (p->scr_sizes, g_strdup_printf ("%dx%d", width, height)); +} - screen = gdk_display_get_screen(display, i); +static void +draw_background (MsdBackgroundManager *manager, + gboolean may_fade) +{ + MsdBackgroundManagerPrivate *p = manager->priv; - surface = mate_bg_create_surface (manager->priv->bg, - gdk_screen_get_root_window (screen), - gdk_screen_get_width (screen), - gdk_screen_get_height (screen), - TRUE); + if (!p->msd_can_draw || p->draw_in_progress || caja_is_drawing_bg (manager)) + return; - if (use_crossfade && do_crossfade_background (manager)) - { - if (manager->priv->fade != NULL) - g_object_unref (manager->priv->fade); - - manager->priv->fade = mate_bg_set_surface_as_root_with_crossfade (screen, - surface); - g_signal_connect_swapped (manager->priv->fade, "finished", - G_CALLBACK (free_fade), - manager); - } else { - mate_bg_set_surface_as_root (screen, surface); - } + mate_settings_profile_start (NULL); + + GdkDisplay *display = gdk_display_get_default (); + int n_screens = gdk_display_get_n_screens (display); + int scr; - cairo_surface_destroy (surface); - surface = NULL; + p->draw_in_progress = TRUE; + p->do_fade = may_fade && can_fade_bg (manager); + free_scr_sizes (manager); + + for (scr = 0; scr < n_screens; scr++) + { + g_debug ("Drawing background on Screen%d", scr); + real_draw_bg (manager, gdk_display_get_screen (display, scr)); } + p->scr_sizes = g_list_reverse (p->scr_sizes); + + p->draw_in_progress = FALSE; + mate_settings_profile_end (NULL); +} - mate_settings_profile_end(NULL); +static void +on_bg_changed (MateBG *bg, + MsdBackgroundManager *manager) +{ + g_debug ("Background changed"); + draw_background (manager, TRUE); } static void on_bg_transitioned (MateBG *bg, - MsdBackgroundManager *manager) + MsdBackgroundManager *manager) { + g_debug ("Background transitioned"); draw_background (manager, FALSE); } +static void +on_screen_size_changed (GdkScreen *screen, + MsdBackgroundManager *manager) +{ + gint scr_num = gdk_screen_get_number (screen); + gchar *old_size = g_list_nth (manager->priv->scr_sizes, scr_num)->data; + gchar *new_size = g_strdup_printf ("%dx%d", gdk_screen_get_width (screen), + gdk_screen_get_height (screen)); + if (g_strcmp0 (old_size, new_size) != 0) + { + g_debug ("Screen%d size changed: %s -> %s", scr_num, old_size, new_size); + draw_background (manager, FALSE); + } else { + g_debug ("Screen%d size unchanged (%s). Ignoring.", scr_num, old_size); + } + g_free (new_size); +} + +static void +disconnect_screen_signals (MsdBackgroundManager *manager) +{ + GdkDisplay *display = gdk_display_get_default(); + int n_screens = gdk_display_get_n_screens (display); + int i; + + for (i = 0; i < n_screens; i++) + { + g_signal_handlers_disconnect_by_func + (gdk_display_get_screen (display, i), + G_CALLBACK (on_screen_size_changed), manager); + } +} + +static void +connect_screen_signals (MsdBackgroundManager *manager) +{ + GdkDisplay *display = gdk_display_get_default(); + int n_screens = gdk_display_get_n_screens (display); + int i; + + for (i = 0; i < n_screens; i++) + { + GdkScreen *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); + } +} + static gboolean settings_change_event_idle_cb (MsdBackgroundManager *manager) { + mate_settings_profile_start ("settings_change_event_idle_cb"); + mate_bg_load_from_gsettings (manager->priv->bg, - manager->priv->settings); + manager->priv->settings); + + mate_settings_profile_end ("settings_change_event_idle_cb"); return FALSE; /* remove from the list of event sources */ } static gboolean settings_change_event_cb (GSettings *settings, - gpointer keys, - gint n_keys, - MsdBackgroundManager *manager) + gpointer keys, + gint n_keys, + MsdBackgroundManager *manager) { - /* Defer signal processing to avoid making the dconf backend deadlock */ - g_idle_add ((GSourceFunc) settings_change_event_idle_cb, manager); + MsdBackgroundManagerPrivate *p = manager->priv; + + /* Complements on_bg_handling_changed() */ + p->msd_can_draw = msd_can_draw_bg (manager); + p->caja_can_draw = caja_can_draw_bg (manager); + + if (p->msd_can_draw && p->bg != NULL && !caja_is_drawing_bg (manager)) + { + /* Defer signal processing to avoid making the dconf backend deadlock */ + g_idle_add ((GSourceFunc) settings_change_event_idle_cb, manager); + } return FALSE; /* let the event propagate further */ } static void -on_screen_size_changed (GdkScreen *screen, - MsdBackgroundManager *manager) +setup_background (MsdBackgroundManager *manager) { - draw_background (manager, FALSE); + MsdBackgroundManagerPrivate *p = manager->priv; + g_return_if_fail (p->bg == NULL); + + p->bg = mate_bg_new(); + + p->draw_in_progress = FALSE; + + g_signal_connect(p->bg, "changed", G_CALLBACK (on_bg_changed), manager); + + g_signal_connect(p->bg, "transitioned", G_CALLBACK (on_bg_transitioned), manager); + + mate_bg_load_from_gsettings (p->bg, p->settings); + + connect_screen_signals (manager); + + g_signal_connect (p->settings, "change-event", + G_CALLBACK (settings_change_event_cb), manager); } static void -on_bg_changed (MateBG *bg, - MsdBackgroundManager *manager) +remove_background (MsdBackgroundManager *manager) { - draw_background (manager, TRUE); + MsdBackgroundManagerPrivate *p = manager->priv; + + disconnect_screen_signals (manager); + + g_signal_handlers_disconnect_by_func (p->settings, settings_change_event_cb, manager); + + if (p->settings != NULL) { + g_object_unref (G_OBJECT (p->settings)); + p->settings = NULL; + } + + if (p->bg != NULL) { + g_object_unref (G_OBJECT (p->bg)); + p->bg = NULL; + } + + free_scr_sizes (manager); + free_bg_surface (manager); + free_fade (manager); } static void -setup_bg (MsdBackgroundManager *manager) +on_bg_handling_changed (GSettings *settings, + const char *key, + 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); + MsdBackgroundManagerPrivate *p = manager->priv; - g_signal_connect(manager->priv->bg, - "transitioned", - G_CALLBACK (on_bg_transitioned), - manager); + mate_settings_profile_start (NULL); - connect_screen_signals (manager); + if (caja_is_drawing_bg (manager)) + { + if (p->bg != NULL) + remove_background (manager); + } + else if (p->msd_can_draw && p->bg == NULL) + { + setup_background (manager); + } - mate_bg_load_from_gsettings (manager->priv->bg, - manager->priv->settings); - - /* Connect to "change-event" signal to receive *groups of changes* before - * they are split out into multiple emissions of the "changed" signal. - */ - g_signal_connect (manager->priv->settings, - "change-event", - G_CALLBACK (settings_change_event_cb), - manager); + mate_settings_profile_end (NULL); } static gboolean -queue_draw_background (MsdBackgroundManager *manager) +queue_setup_background (MsdBackgroundManager *manager) { manager->priv->timeout_id = 0; - if (manager->priv->bg == NULL) - setup_bg (manager); - - draw_background (manager, FALSE); + setup_background (manager); return FALSE; } @@ -361,16 +428,14 @@ queue_timeout (MsdBackgroundManager *manager) if (manager->priv->timeout_id > 0) return; - /* If the session finishes then check if caja is - * running and if not, set the background. + /* SessionRunning: now check if Caja is drawing background, and if not, set it. * - * We wait a few seconds after the session is up - * because caja tells the session manager that its - * ready before it sets the background. + * FIXME: We wait a few seconds after the session is up because Caja tells the + * session manager that its ready before it sets the background. + * https://bugzilla.gnome.org/show_bug.cgi?id=568588 */ - manager->priv->timeout_id = g_timeout_add_seconds(8, - (GSourceFunc) queue_draw_background, - manager); + manager->priv->timeout_id = + g_timeout_add_seconds (8, (GSourceFunc) queue_setup_background, manager); } static void @@ -399,7 +464,7 @@ on_session_manager_signal (GDBusProxy *proxy, } static void -draw_background_after_session_loads (MsdBackgroundManager *manager) +draw_bg_after_session_loads (MsdBackgroundManager *manager) { GError *error = NULL; GDBusProxyFlags flags; @@ -427,101 +492,42 @@ draw_background_after_session_loads (MsdBackgroundManager *manager) manager); } -static void -disconnect_screen_signals (MsdBackgroundManager* manager) +gboolean +msd_background_manager_start (MsdBackgroundManager *manager, + GError **error) { - GdkDisplay* display; - int i; - int n_screens; - - display = gdk_display_get_default(); - n_screens = gdk_display_get_n_screens(display); + MsdBackgroundManagerPrivate *p = manager->priv; - for (i = 0; i < n_screens; ++i) - { - GdkScreen *screen; + g_debug ("Starting background manager"); + mate_settings_profile_start (NULL); - screen = gdk_display_get_screen(display, i); + p->settings = g_settings_new (MATE_BG_SCHEMA); - g_signal_handlers_disconnect_by_func(screen, - G_CALLBACK(on_screen_size_changed), - manager); - } -} + p->msd_can_draw = msd_can_draw_bg (manager); + p->caja_can_draw = caja_can_draw_bg (manager); -static void -connect_screen_signals (MsdBackgroundManager* manager) -{ - GdkDisplay* display; - int i; - int n_screens; + g_signal_connect (p->settings, "changed::" MATE_BG_KEY_DRAW_BACKGROUND, + G_CALLBACK (on_bg_handling_changed), manager); + g_signal_connect (p->settings, "changed::" MATE_BG_KEY_SHOW_DESKTOP, + G_CALLBACK (on_bg_handling_changed), manager); - 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); - } -} - -static void -background_handling_changed (GSettings *settings, - const char *key, - MsdBackgroundManager *manager) -{ - if (do_draw_background (manager) && - !caja_is_drawing_background (manager)) - { - queue_timeout (manager); - } -} - -gboolean -msd_background_manager_start (MsdBackgroundManager *manager, - GError **error) -{ - gboolean show_desktop_icons; - - g_debug("Starting background manager"); - mate_settings_profile_start(NULL); - - manager->priv->settings = g_settings_new (MATE_BG_SCHEMA); - g_signal_connect (manager->priv->settings, "changed::" MATE_BG_KEY_DRAW_BACKGROUND, - G_CALLBACK (background_handling_changed), manager); - g_signal_connect (manager->priv->settings, "changed::" MATE_BG_KEY_SHOW_DESKTOP, - G_CALLBACK (background_handling_changed), manager); - - /* 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. + /* If Caja is set to draw the background, it is very likely in our session. + * But it might not be started yet, so caja_is_drawing_bg() would fail. + * In this case, we wait till the session is loaded, to avoid double-draws. */ - show_desktop_icons = g_settings_get_boolean (manager->priv->settings, - MATE_BG_KEY_SHOW_DESKTOP); - - if (!show_desktop_icons) - { - setup_bg(manager); - } - else + if (p->msd_can_draw) { - draw_background_after_session_loads(manager); + if (p->caja_can_draw) + { + draw_bg_after_session_loads (manager); + } + else + { + setup_background (manager); + } } - mate_settings_profile_end(NULL); + mate_settings_profile_end (NULL); return TRUE; } @@ -529,11 +535,7 @@ msd_background_manager_start (MsdBackgroundManager *manager, void msd_background_manager_stop (MsdBackgroundManager *manager) { - MsdBackgroundManagerPrivate *p = manager->priv; - - g_debug("Stopping background manager"); - - disconnect_screen_signals(manager); + g_debug ("Stopping background manager"); if (manager->priv->proxy) { @@ -541,53 +543,38 @@ msd_background_manager_stop (MsdBackgroundManager *manager) g_object_unref (manager->priv->proxy); } - g_signal_handlers_disconnect_by_func (manager->priv->settings, - settings_change_event_cb, - manager); - - if (p->settings != NULL) - { - g_object_unref (G_OBJECT (p->settings)); - p->settings = NULL; + if (manager->priv->timeout_id != 0) { + g_source_remove (manager->priv->timeout_id); + manager->priv->timeout_id = 0; } - if (p->timeout_id != 0) - { - g_source_remove (p->timeout_id); - p->timeout_id = 0; - } - - if (p->bg != NULL) - { - g_object_unref (G_OBJECT (p->bg)); - p->bg = NULL; - } - - free_fade (manager); + remove_background (manager); } static GObject* msd_background_manager_constructor (GType type, - guint n_construct_properties, - GObjectConstructParam* construct_properties) + guint n_construct_properties, + GObjectConstructParam* construct_properties) { - MsdBackgroundManager* background_manager; + MsdBackgroundManager *manager = + MSD_BACKGROUND_MANAGER ( + G_OBJECT_CLASS (msd_background_manager_parent_class)->constructor ( + type, n_construct_properties, construct_properties)); - 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); + return G_OBJECT(manager); } static void -msd_background_manager_class_init (MsdBackgroundManagerClass* klass) +msd_background_manager_finalize (GObject *object) { - GObjectClass* object_class = G_OBJECT_CLASS(klass); + g_return_if_fail (object != NULL); + g_return_if_fail (MSD_IS_BACKGROUND_MANAGER (object)); - object_class->constructor = msd_background_manager_constructor; - object_class->finalize = msd_background_manager_finalize; + MsdBackgroundManager *manager = MSD_BACKGROUND_MANAGER (object); - g_type_class_add_private(klass, sizeof(MsdBackgroundManagerPrivate)); + g_return_if_fail (manager->priv != NULL); + + G_OBJECT_CLASS(msd_background_manager_parent_class)->finalize(object); } static void @@ -597,16 +584,14 @@ msd_background_manager_init (MsdBackgroundManager* manager) } static void -msd_background_manager_finalize (GObject* object) +msd_background_manager_class_init (MsdBackgroundManagerClass *klass) { - g_return_if_fail (object != NULL); - g_return_if_fail (MSD_IS_BACKGROUND_MANAGER (object)); - - MsdBackgroundManager *manager = MSD_BACKGROUND_MANAGER (object); + GObjectClass *object_class = G_OBJECT_CLASS(klass); - g_return_if_fail (manager->priv != NULL); + object_class->constructor = msd_background_manager_constructor; + object_class->finalize = msd_background_manager_finalize; - G_OBJECT_CLASS(msd_background_manager_parent_class)->finalize(object); + g_type_class_add_private(klass, sizeof(MsdBackgroundManagerPrivate)); } MsdBackgroundManager* -- cgit v1.2.1