moving from https://github.com/perberos/mate-desktop-environment

1 files changed, 731 insertions, 0 deletions

diff --git a/libcaja-private/caja-directory-background.c b/libcaja-private/caja-directory-background.c
new file mode 100644
index 00000000..ad1306f2
--- /dev/null
+++ b/libcaja-private/caja-directory-background.c
@@ -0,0 +1,731 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
+
+/*
+   caja-directory-background.c: Helper for the background of a widget
+                                    that is viewing a particular location.
+
+   Copyright (C) 2000 Eazel, 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.
+
+   Author: Darin Adler <[email protected]>
+*/
+
+#include <config.h>
+#include "caja-directory-background.h"
+
+#include <eel/eel-gdk-extensions.h>
+#include <eel/eel-gtk-extensions.h>
+#include <eel/eel-background.h>
+#include "caja-dnd.h"
+#include "caja-global-preferences.h"
+#include "caja-metadata.h"
+#include "caja-file-attributes.h"
+#include <gtk/gtk.h>
+#include <string.h>
+
+static void background_changed_callback     (EelBackground *background,
+        GdkDragAction  action,
+        CajaFile  *file);
+static void background_reset_callback       (EelBackground *background,
+        CajaFile       *file);
+
+static void saved_settings_changed_callback (CajaFile       *file,
+        EelBackground *background);
+
+static void caja_file_background_receive_mateconf_changes (EelBackground *background);
+
+static void caja_file_background_theme_changed (gpointer user_data);
+
+void
+caja_connect_desktop_background_to_file_metadata (CajaIconContainer *icon_container,
+        CajaFile *file)
+{
+    EelBackground *background;
+
+    background = eel_get_widget_background (GTK_WIDGET (icon_container));
+
+    eel_background_set_desktop (background, GTK_WIDGET (icon_container), TRUE);
+
+    /* Strictly speaking, we don't need to know about metadata changes, since
+     * the desktop setting aren't stored there. But, hooking up to metadata
+     * changes is actually a small part of what this fn does, and we do need
+     * the other stuff (hooked up to background & theme changes, initialize
+     * the background). Being notified of metadata changes on the file is a
+     * waste, but won't hurt, so I don't think it's worth refactoring the fn
+     * at this point.
+     */
+    caja_connect_background_to_file_metadata (GTK_WIDGET (icon_container), file, CAJA_DND_ACTION_SET_AS_FOLDER_BACKGROUND);
+
+    caja_file_background_receive_mateconf_changes (background);
+}
+
+static void
+caja_file_background_get_default_settings (char **color,
+        char **image,
+        EelBackgroundImagePlacement *placement)
+{
+    gboolean background_set;
+
+    background_set = eel_preferences_get_boolean
+                     (CAJA_PREFERENCES_BACKGROUND_SET);
+
+    if (background_set && color)
+    {
+        *color = eel_preferences_get (CAJA_PREFERENCES_BACKGROUND_COLOR);
+    }
+
+    if (background_set && image)
+    {
+        *image = eel_preferences_get (CAJA_PREFERENCES_BACKGROUND_FILENAME);
+    }
+
+    if (placement)
+    {
+        *placement = EEL_BACKGROUND_TILED;
+    }
+}
+
+
+#define BG_PREFERENCES_DRAW_BACKGROUND    "/desktop/mate/background/draw_background"
+#define BG_PREFERENCES_PRIMARY_COLOR      "/desktop/mate/background/primary_color"
+#define BG_PREFERENCES_SECONDARY_COLOR    "/desktop/mate/background/secondary_color"
+#define BG_PREFERENCES_COLOR_SHADING_TYPE "/desktop/mate/background/color_shading_type"
+#define BG_PREFERENCES_PICTURE_OPTIONS    "/desktop/mate/background/picture_options"
+#define BG_PREFERENCES_PICTURE_OPACITY    "/desktop/mate/background/picture_opacity"
+#define BG_PREFERENCES_PICTURE_FILENAME   "/desktop/mate/background/picture_filename"
+
+static void
+read_color (MateConfClient *client, const char *key, GdkColor *color)
+{
+    gchar *tmp;
+
+    tmp = mateconf_client_get_string (client, key, NULL);
+
+    if (tmp != NULL)
+    {
+        if (!gdk_color_parse (tmp, color))
+            gdk_color_parse ("black", color);
+        g_free (tmp);
+    }
+    else
+    {
+        gdk_color_parse ("black", color);
+    }
+
+    gdk_rgb_find_color (gdk_rgb_get_colormap (), color);
+}
+
+static void
+caja_file_background_read_desktop_settings (char **color,
+        char **image,
+        EelBackgroundImagePlacement *placement)
+{
+    MateConfClient *client;
+    gboolean enabled;
+    GdkColor primary, secondary;
+    gchar *tmp, *filename;
+    char	*end_color;
+    char	*start_color;
+    gboolean use_gradient;
+    gboolean is_horizontal;
+
+    filename = NULL;
+
+    client = mateconf_client_get_default ();
+
+    /* Get the image filename */
+    enabled = mateconf_client_get_bool (client, BG_PREFERENCES_DRAW_BACKGROUND, NULL);
+    if (enabled)
+    {
+        tmp = mateconf_client_get_string (client, BG_PREFERENCES_PICTURE_FILENAME, NULL);
+        if (tmp != NULL)
+        {
+            if (g_utf8_validate (tmp, -1, NULL) && g_file_test (tmp, G_FILE_TEST_EXISTS))
+            {
+                filename = g_strdup (tmp);
+            }
+            else
+            {
+                filename = g_filename_from_utf8 (tmp, -1, NULL, NULL, NULL);
+            }
+        }
+        g_free (tmp);
+
+        if (filename != NULL && filename[0] != '\0')
+        {
+            *image = g_filename_to_uri (filename, NULL, NULL);
+        }
+        else
+        {
+            *image = NULL;
+        }
+        g_free (filename);
+    }
+    else
+    {
+        *image = NULL;
+    }
+
+    /* Get the placement */
+    tmp = mateconf_client_get_string (client, BG_PREFERENCES_PICTURE_OPTIONS, NULL);
+    if (tmp != NULL)
+    {
+        if (strcmp (tmp, "wallpaper") == 0)
+        {
+            *placement = EEL_BACKGROUND_TILED;
+        }
+        else if (strcmp (tmp, "centered") == 0)
+        {
+            *placement = EEL_BACKGROUND_CENTERED;
+        }
+        else if (strcmp (tmp, "scaled") == 0)
+        {
+            *placement = EEL_BACKGROUND_SCALED_ASPECT;
+        }
+        else if (strcmp (tmp, "stretched") == 0)
+        {
+            *placement = EEL_BACKGROUND_SCALED;
+        }
+        else if (strcmp (tmp, "zoom") == 0)
+        {
+            *placement = EEL_BACKGROUND_ZOOM;
+        }
+        else if (strcmp (tmp, "spanned") == 0)
+        {
+            *placement = EEL_BACKGROUND_SPANNED;
+        }
+        else if (strcmp (tmp, "none") == 0)
+        {
+            g_free (*image);
+
+            *placement = EEL_BACKGROUND_CENTERED;
+            *image = NULL;
+        }
+        else
+        {
+            *placement = EEL_BACKGROUND_CENTERED;
+        }
+    }
+    else
+    {
+        *placement = EEL_BACKGROUND_CENTERED;
+    }
+    g_free (tmp);
+
+    /* Get the color */
+    tmp = mateconf_client_get_string (client, BG_PREFERENCES_COLOR_SHADING_TYPE, NULL);
+    if (tmp != NULL)
+    {
+        if (strcmp (tmp, "solid") == 0)
+        {
+            use_gradient = FALSE;
+            is_horizontal = FALSE;
+        }
+        else if (strcmp (tmp, "vertical-gradient") == 0)
+        {
+            use_gradient = TRUE;
+            is_horizontal = FALSE;
+        }
+        else if (strcmp (tmp, "horizontal-gradient") == 0)
+        {
+            use_gradient = TRUE;
+            is_horizontal = TRUE;
+        }
+        else
+        {
+            use_gradient = FALSE;
+            is_horizontal = FALSE;
+        }
+    }
+    else
+    {
+        use_gradient = FALSE;
+        is_horizontal = FALSE;
+    }
+    g_free (tmp);
+
+    read_color (client, BG_PREFERENCES_PRIMARY_COLOR, &primary);
+    read_color (client, BG_PREFERENCES_SECONDARY_COLOR, &secondary);
+
+    start_color   = eel_gdk_rgb_to_color_spec (eel_gdk_color_to_rgb (&primary));
+    end_color     = eel_gdk_rgb_to_color_spec (eel_gdk_color_to_rgb (&secondary));
+
+    if (use_gradient)
+    {
+        *color = eel_gradient_new (start_color, end_color, is_horizontal);
+    }
+    else
+    {
+        *color = g_strdup (start_color);
+    }
+
+    g_free (start_color);
+    g_free (end_color);
+}
+
+static void
+caja_file_background_write_desktop_default_settings (void)
+{
+    /* We just unset all the mateconf keys so they go back to
+     * defaults
+     */
+    MateConfClient *client;
+    MateConfChangeSet *set;
+
+    client = mateconf_client_get_default ();
+    set = mateconf_change_set_new ();
+
+    /* the list of keys here has to be kept in sync with libmate
+     * schemas, which isn't the most maintainable thing ever.
+     */
+    mateconf_change_set_unset (set, "/desktop/mate/background/picture_options");
+    mateconf_change_set_unset (set, "/desktop/mate/background/picture_filename");
+    mateconf_change_set_unset (set, "/desktop/mate/background/picture_opacity");
+    mateconf_change_set_unset (set, "/desktop/mate/background/primary_color");
+    mateconf_change_set_unset (set, "/desktop/mate/background/secondary_color");
+    mateconf_change_set_unset (set, "/desktop/mate/background/color_shading_type");
+
+    /* this isn't atomic yet so it'll be a bit inefficient, but
+     * someday it might be atomic.
+     */
+    mateconf_client_commit_change_set (client, set, FALSE, NULL);
+
+    mateconf_change_set_unref (set);
+
+    g_object_unref (G_OBJECT (client));
+}
+
+static int
+call_settings_changed (EelBackground *background)
+{
+    CajaFile *file;
+    file = g_object_get_data (G_OBJECT (background), "eel_background_file");
+    if (file)
+    {
+        saved_settings_changed_callback (file, background);
+    }
+    g_object_set_data (G_OBJECT (background), "desktop_mateconf_notification_timeout", GUINT_TO_POINTER (0));
+    return FALSE;
+}
+
+static void
+desktop_background_destroyed_callback (EelBackground *background, void *georgeWBush)
+{
+    guint notification_id;
+    guint notification_timeout_id;
+
+    notification_id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (background), "desktop_mateconf_notification"));
+    eel_mateconf_notification_remove (notification_id);
+
+    notification_timeout_id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (background), "desktop_mateconf_notification_timeout"));
+    if (notification_timeout_id != 0)
+    {
+        g_source_remove (notification_timeout_id);
+    }
+}
+
+static void
+desktop_background_mateconf_notify_cb (MateConfClient *client, guint notification_id, MateConfEntry *entry, gpointer data)
+{
+    EelBackground *background;
+    guint notification_timeout_id;
+
+    background = EEL_BACKGROUND (data);
+
+    notification_timeout_id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (background), "desktop_mateconf_notification_timeout"));
+
+    if (strcmp (entry->key, "/desktop/mate/background/stamp") == 0)
+    {
+        if (notification_timeout_id != 0)
+            g_source_remove (notification_timeout_id);
+
+        call_settings_changed (background);
+    }
+    else if (notification_timeout_id == 0)
+    {
+        notification_timeout_id = g_timeout_add (300, (GSourceFunc) call_settings_changed, background);
+
+        g_object_set_data (G_OBJECT (background), "desktop_mateconf_notification_timeout", GUINT_TO_POINTER (notification_timeout_id));
+    }
+}
+
+static void
+caja_file_background_receive_mateconf_changes (EelBackground *background)
+{
+    guint notification_id;
+
+    eel_mateconf_monitor_add ("/desktop/mate/background");
+    notification_id = eel_mateconf_notification_add ("/desktop/mate/background", desktop_background_mateconf_notify_cb, background);
+
+    g_object_set_data (G_OBJECT (background), "desktop_mateconf_notification", GUINT_TO_POINTER (notification_id));
+
+    g_signal_connect (background, "destroy",
+                      G_CALLBACK (desktop_background_destroyed_callback), NULL);
+}
+
+/* return true if the background is not in the default state */
+gboolean
+caja_file_background_is_set (EelBackground *background)
+{
+    char *color;
+    char *image;
+
+    gboolean is_set;
+
+    color = eel_background_get_color (background);
+    image = eel_background_get_image_uri (background);
+
+    is_set = (color || image);
+
+    g_free (color);
+    g_free (image);
+
+    return is_set;
+}
+
+/* handle the background changed signal */
+static void
+background_changed_callback (EelBackground *background,
+                             GdkDragAction  action,
+                             CajaFile   *file)
+{
+    char *color;
+    char *image;
+
+    g_assert (EEL_IS_BACKGROUND (background));
+    g_assert (CAJA_IS_FILE (file));
+    g_assert (g_object_get_data (G_OBJECT (background), "eel_background_file") == file);
+
+
+    color = eel_background_get_color (background);
+    image = eel_background_get_image_uri (background);
+
+    if (eel_background_is_desktop (background))
+    {
+        eel_background_save_to_mateconf (background);
+    }
+    else
+    {
+        /* Block the other handler while we are writing metadata so it doesn't
+         * try to change the background.
+         */
+        g_signal_handlers_block_by_func (
+            file, G_CALLBACK (saved_settings_changed_callback), background);
+
+        if (action != (GdkDragAction) CAJA_DND_ACTION_SET_AS_FOLDER_BACKGROUND &&
+                action != (GdkDragAction) CAJA_DND_ACTION_SET_AS_GLOBAL_BACKGROUND)
+        {
+            GdkDragAction default_drag_action;
+
+            default_drag_action = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (background), "default_drag_action"));
+
+
+            action = default_drag_action;
+        }
+
+        if (action == (GdkDragAction) CAJA_DND_ACTION_SET_AS_GLOBAL_BACKGROUND)
+        {
+            caja_file_set_metadata (file,
+                                    CAJA_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
+                                    NULL,
+                                    NULL);
+
+            caja_file_set_metadata (file,
+                                    CAJA_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
+                                    NULL,
+                                    NULL);
+
+            eel_preferences_set
+            (CAJA_PREFERENCES_BACKGROUND_COLOR, color ? color : "");
+            eel_preferences_set
+            (CAJA_PREFERENCES_BACKGROUND_FILENAME, image ? image : "");
+            eel_preferences_set_boolean
+            (CAJA_PREFERENCES_BACKGROUND_SET, TRUE);
+        }
+        else
+        {
+            caja_file_set_metadata (file,
+                                    CAJA_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
+                                    NULL,
+                                    color);
+
+            caja_file_set_metadata (file,
+                                    CAJA_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
+                                    NULL,
+                                    image);
+        }
+
+        /* Unblock the handler. */
+        g_signal_handlers_unblock_by_func (
+            file, G_CALLBACK (saved_settings_changed_callback), background);
+    }
+
+    g_free (color);
+    g_free (image);
+}
+
+static void
+initialize_background_from_settings (CajaFile *file,
+                                     EelBackground *background)
+{
+    char *color;
+    char *image;
+    EelBackgroundImagePlacement placement;
+
+    g_assert (CAJA_IS_FILE (file));
+    g_assert (EEL_IS_BACKGROUND (background));
+    g_assert (g_object_get_data (G_OBJECT (background), "eel_background_file")
+              == file);
+
+    if (eel_background_is_desktop (background))
+    {
+        caja_file_background_read_desktop_settings (&color, &image, &placement);
+    }
+    else
+    {
+        color = caja_file_get_metadata (file,
+                                        CAJA_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
+                                        NULL);
+        image = caja_file_get_metadata (file,
+                                        CAJA_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
+                                        NULL);
+        placement = EEL_BACKGROUND_TILED; /* non-tiled only avail for desktop, at least for now */
+
+        /* if there's none, read the default from the theme */
+        if (color == NULL && image == NULL)
+        {
+            caja_file_background_get_default_settings
+            (&color, &image, &placement);
+        }
+    }
+
+    /* Block the other handler while we are responding to changes
+     * in the metadata so it doesn't try to change the metadata.
+     */
+    g_signal_handlers_block_by_func
+    (background,
+     G_CALLBACK (background_changed_callback),
+     file);
+
+    eel_background_set_color (background, color);
+    eel_background_set_image_uri (background, image);
+    eel_background_set_image_placement (background, placement);
+
+    /* Unblock the handler. */
+    g_signal_handlers_unblock_by_func
+    (background,
+     G_CALLBACK (background_changed_callback),
+     file);
+
+    g_free (color);
+    g_free (image);
+}
+
+/* handle the file changed signal */
+static void
+saved_settings_changed_callback (CajaFile *file,
+                                 EelBackground *background)
+{
+    initialize_background_from_settings (file, background);
+}
+
+/* handle the theme changing */
+static void
+caja_file_background_theme_changed (gpointer user_data)
+{
+    CajaFile *file;
+    EelBackground *background;
+
+    background = EEL_BACKGROUND (user_data);
+    file = g_object_get_data (G_OBJECT (background), "eel_background_file");
+    if (file)
+    {
+        saved_settings_changed_callback (file, background);
+    }
+}
+
+/* handle the background reset signal by setting values from the current theme */
+static void
+background_reset_callback (EelBackground *background,
+                           CajaFile  *file)
+{
+    char *color;
+    char *image;
+
+    if (eel_background_is_desktop (background))
+    {
+        caja_file_background_write_desktop_default_settings ();
+    }
+    else
+    {
+        /* Block the other handler while we are writing metadata so it doesn't
+         * try to change the background.
+         */
+        g_signal_handlers_block_by_func (
+            file,
+            G_CALLBACK (saved_settings_changed_callback),
+            background);
+
+        color = caja_file_get_metadata (file,
+                                        CAJA_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
+                                        NULL);
+        image = caja_file_get_metadata (file,
+                                        CAJA_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
+                                        NULL);
+        if (!color && !image)
+        {
+            eel_preferences_set_boolean (CAJA_PREFERENCES_BACKGROUND_SET,
+                                         FALSE);
+        }
+        else
+        {
+            /* reset the metadata */
+            caja_file_set_metadata (file,
+                                    CAJA_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
+                                    NULL,
+                                    NULL);
+
+            caja_file_set_metadata (file,
+                                    CAJA_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
+                                    NULL,
+                                    NULL);
+        }
+        g_free (color);
+        g_free (image);
+
+        /* Unblock the handler. */
+        g_signal_handlers_unblock_by_func (
+            file,
+            G_CALLBACK (saved_settings_changed_callback),
+            background);
+    }
+
+    saved_settings_changed_callback (file, background);
+}
+
+/* handle the background destroyed signal */
+static void
+background_destroyed_callback (EelBackground *background,
+                               CajaFile *file)
+{
+    g_signal_handlers_disconnect_by_func
+    (file,
+     G_CALLBACK (saved_settings_changed_callback), background);
+    caja_file_monitor_remove (file, background);
+    eel_preferences_remove_callback (CAJA_PREFERENCES_THEME,
+                                     caja_file_background_theme_changed,
+                                     background);
+    eel_preferences_remove_callback (CAJA_PREFERENCES_BACKGROUND_SET,
+                                     caja_file_background_theme_changed,
+                                     background);
+    eel_preferences_remove_callback (CAJA_PREFERENCES_BACKGROUND_COLOR,
+                                     caja_file_background_theme_changed,
+                                     background);
+    eel_preferences_remove_callback (CAJA_PREFERENCES_BACKGROUND_FILENAME,
+                                     caja_file_background_theme_changed,
+                                     background);
+}
+
+/* key routine that hooks up a background and location */
+void
+caja_connect_background_to_file_metadata (GtkWidget    *widget,
+        CajaFile *file,
+        GdkDragAction default_drag_action)
+{
+    EelBackground *background;
+    gpointer old_file;
+
+    /* Get at the background object we'll be connecting. */
+    background = eel_get_widget_background (widget);
+
+    /* Check if it is already connected. */
+    old_file = g_object_get_data (G_OBJECT (background), "eel_background_file");
+    if (old_file == file)
+    {
+        return;
+    }
+
+    /* Disconnect old signal handlers. */
+    if (old_file != NULL)
+    {
+        g_assert (CAJA_IS_FILE (old_file));
+        g_signal_handlers_disconnect_by_func
+        (background,
+         G_CALLBACK (background_changed_callback), old_file);
+        g_signal_handlers_disconnect_by_func
+        (background,
+         G_CALLBACK (background_destroyed_callback), old_file);
+        g_signal_handlers_disconnect_by_func
+        (background,
+         G_CALLBACK (background_reset_callback), old_file);
+        g_signal_handlers_disconnect_by_func
+        (old_file,
+         G_CALLBACK (saved_settings_changed_callback), background);
+        caja_file_monitor_remove (old_file, background);
+        eel_preferences_remove_callback (CAJA_PREFERENCES_THEME,
+                                         caja_file_background_theme_changed,
+                                         background);
+        eel_preferences_remove_callback (CAJA_PREFERENCES_BACKGROUND_SET,
+                                         caja_file_background_theme_changed,
+                                         background);
+        eel_preferences_remove_callback (CAJA_PREFERENCES_BACKGROUND_COLOR,
+                                         caja_file_background_theme_changed,
+                                         background);
+        eel_preferences_remove_callback (CAJA_PREFERENCES_BACKGROUND_FILENAME,
+                                         caja_file_background_theme_changed,
+                                         background);
+
+    }
+
+    /* Attach the new directory. */
+    caja_file_ref (file);
+    g_object_set_data_full (G_OBJECT (background), "eel_background_file",
+                            file, (GDestroyNotify) caja_file_unref);
+
+    g_object_set_data (G_OBJECT (background), "default_drag_action", GINT_TO_POINTER (default_drag_action));
+
+    /* Connect new signal handlers. */
+    if (file != NULL)
+    {
+        g_signal_connect_object (background, "settings_changed",
+                                 G_CALLBACK (background_changed_callback), file, 0);
+        g_signal_connect_object (background, "destroy",
+                                 G_CALLBACK (background_destroyed_callback), file, 0);
+        g_signal_connect_object (background, "reset",
+                                 G_CALLBACK (background_reset_callback), file, 0);
+        g_signal_connect_object (file, "changed",
+                                 G_CALLBACK (saved_settings_changed_callback), background, 0);
+
+        /* arrange to receive file metadata */
+        caja_file_monitor_add (file,
+                               background,
+                               CAJA_FILE_ATTRIBUTE_INFO);
+
+        /* arrange for notification when the theme changes */
+        eel_preferences_add_callback (CAJA_PREFERENCES_THEME,
+                                      caja_file_background_theme_changed, background);
+        eel_preferences_add_callback (CAJA_PREFERENCES_BACKGROUND_SET,
+                                      caja_file_background_theme_changed, background);
+        eel_preferences_add_callback (CAJA_PREFERENCES_BACKGROUND_COLOR,
+                                      caja_file_background_theme_changed, background);
+        eel_preferences_add_callback (CAJA_PREFERENCES_BACKGROUND_FILENAME,
+                                      caja_file_background_theme_changed, background);
+    }
+
+    /* Update the background based on the file metadata. */
+    initialize_background_from_settings (file, background);
+}