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nautilus/libnautilus-private/nautilus-directory-background.c
Dave Camp 1173d78dac Remove callbacks for background gconf keys. 
2003-01-23  Dave Camp  <dave@ximian.com>

	* libnautilus-private/nautilus-directory-background.c
	(background_destroyed_callback): Remove callbacks for background
	gconf keys.
2003-01-23 17:46:43 +00:00

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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
/*
nautilus-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 <darin@bentspoon.com>
*/
#include <config.h>
#include "nautilus-directory-background.h"
#include <eel/eel-gdk-extensions.h>
#include <eel/eel-gtk-extensions.h>
#include <eel/eel-background.h>
#include "nautilus-dnd.h"
#include "nautilus-global-preferences.h"
#include "nautilus-metadata.h"
#include "nautilus-file-attributes.h"
#include <eel/eel-string.h>
#include <X11/Xatom.h>
#include <gdk/gdkx.h>
#include <gtk/gtkmain.h>
#include <gtk/gtksignal.h>
#include <libgnome/gnome-config.h>
#include <libgnome/gnome-util.h>
#include <libgnomevfs/gnome-vfs-utils.h>
#include <libbackground/preferences.h>
static void background_changed_callback (EelBackground *background,
GdkDragAction action,
NautilusFile *file);
static void background_reset_callback (EelBackground *background,
NautilusFile *file);
static void saved_settings_changed_callback (NautilusFile *file,
EelBackground *background);
static void nautilus_file_background_receive_gconf_changes (EelBackground *background);
static void nautilus_file_update_root_pixmaps (EelBackground *background);
static void nautilus_file_background_write_desktop_settings (char *color,
char *image,
EelBackgroundImagePlacement placement);
static void nautilus_file_background_theme_changed (gpointer user_data);
static void
screen_size_changed (GdkScreen *screen, NautilusIconContainer *icon_container)
{
EelBackground *background;
background = eel_get_widget_background (GTK_WIDGET (icon_container));
nautilus_file_update_root_pixmaps (background);
}
static void
remove_connection (NautilusIconContainer *icon_container, GdkScreen *screen)
{
g_signal_handlers_disconnect_by_func
(screen,
G_CALLBACK (screen_size_changed),
icon_container);
}
static void
desktop_background_realized (NautilusIconContainer *icon_container, void *disconnect_signal)
{
EelBackground *background;
if (GPOINTER_TO_INT (disconnect_signal)) {
g_signal_handlers_disconnect_by_func
(icon_container,
G_CALLBACK (desktop_background_realized),
disconnect_signal);
}
background = eel_get_widget_background (GTK_WIDGET (icon_container));
g_object_set_data (G_OBJECT (background), "icon_container", (gpointer) icon_container);
g_object_set_data (G_OBJECT (background), "screen",
gtk_widget_get_screen (GTK_WIDGET (icon_container)));
nautilus_file_update_root_pixmaps (background);
g_signal_connect (gtk_widget_get_screen (GTK_WIDGET (icon_container)), "size_changed",
G_CALLBACK (screen_size_changed), icon_container);
g_signal_connect (icon_container, "unrealize", G_CALLBACK (remove_connection),
gtk_widget_get_screen (GTK_WIDGET (icon_container)));
}
void
nautilus_connect_desktop_background_to_file_metadata (NautilusIconContainer *icon_container,
NautilusFile *file)
{
EelBackground *background;
background = eel_get_widget_background (GTK_WIDGET (icon_container));
eel_background_set_is_constant_size (background, TRUE);
g_object_set_data (G_OBJECT (background), "is_desktop", (gpointer)1);
/* 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.
*/
nautilus_connect_background_to_file_metadata (GTK_WIDGET (icon_container), file);
if (GTK_WIDGET_REALIZED (icon_container)) {
desktop_background_realized (icon_container, GINT_TO_POINTER (FALSE));
} else {
g_signal_connect (icon_container, "realize",
G_CALLBACK (desktop_background_realized), GINT_TO_POINTER (TRUE));
}
nautilus_file_background_receive_gconf_changes (background);
}
static gboolean
background_is_desktop (EelBackground *background)
{
return g_object_get_data (G_OBJECT (background), "is_desktop") != 0;
}
static void
nautilus_file_background_get_default_settings (char **color,
char **image,
EelBackgroundImagePlacement *placement)
{
gboolean background_set;
background_set = eel_preferences_get_boolean
(NAUTILUS_PREFERENCES_BACKGROUND_SET);
if (background_set && color) {
*color = eel_preferences_get (NAUTILUS_PREFERENCES_BACKGROUND_COLOR);
}
if (background_set && image) {
*image = eel_preferences_get (NAUTILUS_PREFERENCES_BACKGROUND_FILENAME);
}
if (placement) {
*placement = EEL_BACKGROUND_TILED;
}
}
static void
nautilus_file_background_read_desktop_settings (char **color,
char **image,
EelBackgroundImagePlacement *placement)
{
char *end_color;
char *start_color;
gboolean use_gradient;
gboolean is_horizontal;
BGPreferences *prefs;
prefs = BG_PREFERENCES (bg_preferences_new ());
bg_preferences_load (prefs);
if (prefs->wallpaper_enabled) {
if (prefs->wallpaper_filename != NULL &&
prefs->wallpaper_filename [0] != '\0') {
*image = gnome_vfs_get_uri_from_local_path (prefs->wallpaper_filename);
} else {
*image = NULL;
}
}
else {
*image = NULL;
}
switch (prefs->wallpaper_type) {
default:
g_assert_not_reached ();
/* case WPTYPE_EMBOSSED:*/
/* FIXME bugzilla.gnome.org 42193: we don't support embossing.
* Just treat it as centered - ugh.
*/
case WPTYPE_CENTERED:
*placement = EEL_BACKGROUND_CENTERED;
break;
case WPTYPE_TILED:
*placement = EEL_BACKGROUND_TILED;
break;
case WPTYPE_STRETCHED:
*placement = EEL_BACKGROUND_SCALED;
break;
case WPTYPE_SCALED:
*placement = EEL_BACKGROUND_SCALED_ASPECT;
break;
}
end_color = eel_gdk_rgb_to_color_spec (eel_gdk_color_to_rgb (prefs->color2));
start_color = eel_gdk_rgb_to_color_spec (eel_gdk_color_to_rgb (prefs->color1));
use_gradient = prefs->gradient_enabled;
is_horizontal = (prefs->orientation == ORIENTATION_HORIZ);
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);
g_object_unref (prefs);
}
static void
nautilus_file_background_write_desktop_settings (char *color, char *image, EelBackgroundImagePlacement placement)
{
char *end_color;
char *start_color;
char *original_filename;
wallpaper_type_t wallpaper_align;
BGPreferences *prefs;
prefs = BG_PREFERENCES (bg_preferences_new ());
bg_preferences_load (prefs);
if (color != NULL) {
start_color = eel_gradient_get_start_color_spec (color);
gdk_color_parse (start_color, prefs->color1);
g_free (start_color);
/* if color is not a gradient, this ends up writing same as start_color */
end_color = eel_gradient_get_end_color_spec (color);
gdk_color_parse (end_color, prefs->color2);
g_free (end_color);
if (eel_gradient_is_gradient (color)) {
prefs->gradient_enabled = TRUE;
prefs->orientation = eel_gradient_is_horizontal (color) ? ORIENTATION_HORIZ : ORIENTATION_VERT;
} else {
prefs->gradient_enabled = FALSE;
prefs->orientation = ORIENTATION_SOLID;
}
} else {
/* We set it to white here because that's how backgrounds with a NULL color
* are drawn by Nautilus - due to usage of eel_gdk_color_parse_with_white_default.
*/
gdk_color_parse ("#FFFFFF", prefs->color1);
gdk_color_parse ("#FFFFFF", prefs->color2);
prefs->gradient_enabled = FALSE;
prefs->orientation = ORIENTATION_SOLID;
}
original_filename = prefs->wallpaper_filename;
if (image != NULL) {
prefs->wallpaper_filename = gnome_vfs_get_local_path_from_uri (image);
prefs->wallpaper_enabled = TRUE;
switch (placement) {
case EEL_BACKGROUND_TILED:
wallpaper_align = WPTYPE_TILED;
break;
case EEL_BACKGROUND_CENTERED:
wallpaper_align = WPTYPE_CENTERED;
break;
case EEL_BACKGROUND_SCALED:
wallpaper_align = WPTYPE_STRETCHED;
break;
case EEL_BACKGROUND_SCALED_ASPECT:
wallpaper_align = WPTYPE_SCALED;
break;
default:
g_assert_not_reached ();
wallpaper_align = WPTYPE_TILED;
break;
}
prefs->wallpaper_type = wallpaper_align;
} else {
prefs->wallpaper_enabled = FALSE;
prefs->wallpaper_filename = g_strdup (original_filename);
}
g_free (original_filename);
bg_preferences_save (prefs);
g_object_unref (prefs);
}
static void
nautilus_file_background_write_desktop_default_settings ()
{
/* We just unset all the gconf keys so they go back to
* defaults
*/
GConfClient *client;
GConfChangeSet *set;
client = gconf_client_get_default ();
set = gconf_change_set_new ();
/* the list of keys here has to be kept in sync with libgnome
* schemas, which isn't the most maintainable thing ever.
*/
gconf_change_set_unset (set, "/desktop/gnome/background/picture_options");
gconf_change_set_unset (set, "/desktop/gnome/background/picture_filename");
gconf_change_set_unset (set, "/desktop/gnome/background/picture_opacity");
gconf_change_set_unset (set, "/desktop/gnome/background/primary_color");
gconf_change_set_unset (set, "/desktop/gnome/background/secondary_color");
gconf_change_set_unset (set, "/desktop/gnome/background/color_shading_type");
/* this isn't atomic yet so it'll be a bit inefficient, but
* someday it might be atomic.
*/
gconf_client_commit_change_set (client, set, FALSE, NULL);
gconf_change_set_unref (set);
g_object_unref (G_OBJECT (client));
}
static int
call_settings_changed (EelBackground *background)
{
NautilusFile *file;
file = g_object_get_data (G_OBJECT (background), "eel_background_file");
if (file) {
saved_settings_changed_callback (file, background);
}
return FALSE;
}
static void
desktop_background_destroyed_callback (EelBackground *background, void *georgeWBush)
{
guint notification_id;
notification_id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (background), "desktop_gconf_notification"));
eel_gconf_notification_remove (notification_id);
}
static void
desktop_background_gconf_notify_cb (GConfClient *client, guint notification_id, GConfEntry *entry, gpointer data)
{
call_settings_changed (EEL_BACKGROUND (data));
}
static void
nautilus_file_background_receive_gconf_changes (EelBackground *background)
{
guint notification_id;
eel_gconf_monitor_add ("/desktop/gnome/background");
notification_id = eel_gconf_notification_add ("/desktop/gnome/background", desktop_background_gconf_notify_cb, background);
g_object_set_data (G_OBJECT (background), "desktop_gconf_notification", GUINT_TO_POINTER (notification_id));
g_signal_connect (background, "destroy",
G_CALLBACK (desktop_background_destroyed_callback), NULL);
}
/* Create a persistent pixmap. We create a separate display
* and set the closedown mode on it to RetainPermanent
* (copied from gnome-source/control-panels/capplets/background-properties/render-background.c)
*/
static GdkPixmap *
make_root_pixmap (GdkScreen *screen, gint width, gint height)
{
Display *display;
const char *display_name;
Pixmap result;
GdkPixmap *gdk_pixmap;
int screen_num;
screen_num = gdk_screen_get_number (screen);
gdk_flush ();
display_name = gdk_display_get_name (gdk_screen_get_display (screen));
display = XOpenDisplay (display_name);
if (display == NULL) {
g_warning ("Unable to open display '%s' when setting background pixmap\n",
(display_name) ? display_name : "NULL");
return NULL;
}
XSetCloseDownMode (display, RetainPermanent);
result = XCreatePixmap (display,
RootWindow (display, screen_num),
width, height,
DefaultDepth (display, screen_num));
XCloseDisplay (display);
gdk_pixmap = gdk_pixmap_foreign_new (result);
gdk_drawable_set_colormap (GDK_DRAWABLE (gdk_pixmap),
gdk_drawable_get_colormap (gdk_screen_get_root_window (screen)));
return gdk_pixmap;
}
/* Set the root pixmap, and properties pointing to it. We
* do this atomically with XGrabServer to make sure that
* we won't leak the pixmap if somebody else it setting
* it at the same time. (This assumes that they follow the
* same conventions we do
* (copied from gnome-source/control-panels/capplets/background-properties/render-background.c)
*/
static void
set_root_pixmap (GdkPixmap *pixmap, GdkScreen *screen)
{
int result;
gint format;
gulong nitems;
gulong bytes_after;
guchar *data_esetroot;
Pixmap pixmap_id;
Atom type;
Display *display;
int screen_num;
screen_num = gdk_screen_get_number (screen);
data_esetroot = NULL;
display = GDK_DISPLAY_XDISPLAY (gdk_screen_get_display (screen));
XGrabServer (display);
result = XGetWindowProperty (display, RootWindow (display, screen_num),
gdk_x11_get_xatom_by_name ("ESETROOT_PMAP_ID"),
0L, 1L, False, XA_PIXMAP,
&type, &format, &nitems, &bytes_after,
&data_esetroot);
if (data_esetroot != NULL) {
if (result == Success && type == XA_PIXMAP && format == 32 && nitems == 1) {
gdk_error_trap_push ();
XKillClient (display, *(Pixmap *)data_esetroot);
gdk_flush ();
gdk_error_trap_pop ();
}
XFree (data_esetroot);
}
pixmap_id = GDK_WINDOW_XWINDOW (pixmap);
XChangeProperty (display, RootWindow (display, screen_num),
gdk_x11_get_xatom_by_name ("ESETROOT_PMAP_ID"), XA_PIXMAP,
32, PropModeReplace,
(guchar *) &pixmap_id, 1);
XChangeProperty (display, RootWindow (display, screen_num),
gdk_x11_get_xatom_by_name ("_XROOTPMAP_ID"), XA_PIXMAP,
32, PropModeReplace,
(guchar *) &pixmap_id, 1);
XSetWindowBackgroundPixmap (display, RootWindow (display, screen_num), pixmap_id);
XClearWindow (display, RootWindow (display, screen_num));
XUngrabServer (display);
XFlush (display);
}
/* Free the root pixmap */
static void
free_root_pixmap (GdkScreen *screen)
{
gulong nitems;
Atom type;
gint format;
int result;
int screen_num;
guchar *data_esetroot;
gulong bytes_after;
Display *display;
screen_num = gdk_screen_get_number (screen);
display = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
data_esetroot = NULL;
XGrabServer (display);
result = XGetWindowProperty (display, RootWindow (display, screen_num),
gdk_x11_get_xatom_by_name ("ESETROOT_PMAP_ID"),
0L, 1L, False, XA_PIXMAP,
&type, &format, &nitems, &bytes_after,
&data_esetroot);
if (data_esetroot != NULL) {
if (result == Success && type == XA_PIXMAP && format == 32 && nitems == 1) {
gdk_error_trap_push ();
XKillClient (display, *(Pixmap *)data_esetroot);
gdk_flush ();
gdk_error_trap_pop ();
}
XFree (data_esetroot);
}
XDeleteProperty (display, RootWindow (display, screen_num),
gdk_x11_get_xatom_by_name ("ESETROOT_PMAP_ID"));
XDeleteProperty (display, RootWindow (display, screen_num),
gdk_x11_get_xatom_by_name ("_XROOTPMAP_ID"));
XUngrabServer (display);
XFlush (display);
}
static void
image_loading_done_callback (EelBackground *background, gboolean successful_load, void *disconnect_signal)
{
int entire_width;
int entire_height;
int pixmap_width;
int pixmap_height;
GdkGC *gc;
GdkPixmap *pixmap;
GdkWindow *background_window;
GdkScreen *screen;
GdkColor parsed_color;
char * color_string;
if (GPOINTER_TO_INT (disconnect_signal)) {
g_signal_handlers_disconnect_by_func
(background,
G_CALLBACK (image_loading_done_callback),
disconnect_signal);
}
screen = g_object_get_data (G_OBJECT (background), "screen");
if (screen == NULL) {
return;
}
entire_width = gdk_screen_get_width (screen);
entire_height = gdk_screen_get_height (screen);
if (eel_background_get_suggested_pixmap_size (background, entire_width, entire_height,
&pixmap_width, &pixmap_height)) {
eel_background_pre_draw (background, entire_width, entire_height);
/* image resize may have forced us to reload the image */
if (!eel_background_is_loaded (background)) {
g_signal_connect (background, "image_loading_done",
G_CALLBACK (image_loading_done_callback),
GINT_TO_POINTER (TRUE));
return;
}
pixmap = make_root_pixmap (screen, pixmap_width, pixmap_height);
if (pixmap == NULL) {
return;
}
gc = gdk_gc_new (pixmap);
eel_background_draw (background, pixmap, gc,
0, 0, 0, 0,
pixmap_width, pixmap_height);
g_object_unref (gc);
set_root_pixmap (pixmap, screen);
g_object_unref (pixmap);
} else {
free_root_pixmap (screen);
background_window = gdk_screen_get_root_window (screen);
color_string = eel_background_get_color (background);
if (background_window != NULL && color_string != NULL) {
if (eel_gdk_color_parse (color_string, &parsed_color)) {
gdk_rgb_find_color (gdk_drawable_get_colormap (background_window), &parsed_color);
gdk_window_set_background (background_window, &parsed_color);
}
}
}
}
static void
nautilus_file_update_root_pixmaps (EelBackground *background)
{
if (eel_background_is_loaded (background)) {
image_loading_done_callback (background, TRUE, GINT_TO_POINTER (FALSE));
} else {
g_signal_connect (background, "image_loading_done",
G_CALLBACK (image_loading_done_callback),
GINT_TO_POINTER (TRUE));
}
}
/* return true if the background is not in the default state */
gboolean
nautilus_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,
NautilusFile *file)
{
char *color;
char *image;
g_assert (EEL_IS_BACKGROUND (background));
g_assert (NAUTILUS_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 (background_is_desktop (background)) {
nautilus_file_background_write_desktop_settings (color, image, eel_background_get_image_placement (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 != NAUTILUS_DND_ACTION_SET_AS_BACKGROUND) {
nautilus_file_set_metadata (file,
NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
NULL,
NULL);
nautilus_file_set_metadata (file,
NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
NULL,
NULL);
eel_preferences_set
(NAUTILUS_PREFERENCES_BACKGROUND_COLOR, color ? color : "");
eel_preferences_set
(NAUTILUS_PREFERENCES_BACKGROUND_FILENAME, image ? image : "");
eel_preferences_set_boolean
(NAUTILUS_PREFERENCES_BACKGROUND_SET, TRUE);
} else {
nautilus_file_set_metadata (file,
NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
NULL,
color);
nautilus_file_set_metadata (file,
NAUTILUS_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);
if (background_is_desktop (background)) {
nautilus_file_update_root_pixmaps (background);
}
}
static void
initialize_background_from_settings (NautilusFile *file,
EelBackground *background)
{
char *color;
char *image;
EelBackgroundImagePlacement placement;
g_assert (NAUTILUS_IS_FILE (file));
g_assert (EEL_IS_BACKGROUND (background));
g_assert (g_object_get_data (G_OBJECT (background), "eel_background_file")
== file);
if (background_is_desktop (background)) {
nautilus_file_background_read_desktop_settings (&color, &image, &placement);
} else {
color = nautilus_file_get_metadata (file,
NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
NULL);
image = nautilus_file_get_metadata (file,
NAUTILUS_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) {
nautilus_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);
if (background_is_desktop(background)) {
eel_background_set_image_uri_sync (background, image);
}
else {
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 (NautilusFile *file,
EelBackground *background)
{
initialize_background_from_settings (file, background);
if (background_is_desktop (background)) {
nautilus_file_update_root_pixmaps (background);
}
}
/* handle the theme changing */
static void
nautilus_file_background_theme_changed (gpointer user_data)
{
NautilusFile *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,
NautilusFile *file)
{
char *color;
char *image;
if (background_is_desktop (background)) {
nautilus_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 = nautilus_file_get_metadata (file,
NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
NULL);
image = nautilus_file_get_metadata (file,
NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
NULL);
if (!color && !image) {
eel_preferences_set_boolean (NAUTILUS_PREFERENCES_BACKGROUND_SET,
FALSE);
} else {
/* reset the metadata */
nautilus_file_set_metadata (file,
NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
NULL,
NULL);
nautilus_file_set_metadata (file,
NAUTILUS_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,
NautilusFile *file)
{
g_signal_handlers_disconnect_by_func
(file,
G_CALLBACK (saved_settings_changed_callback), background);
nautilus_file_monitor_remove (file, background);
eel_preferences_remove_callback (NAUTILUS_PREFERENCES_THEME,
nautilus_file_background_theme_changed,
background);
eel_preferences_remove_callback (NAUTILUS_PREFERENCES_BACKGROUND_SET,
nautilus_file_background_theme_changed,
background);
eel_preferences_remove_callback (NAUTILUS_PREFERENCES_BACKGROUND_COLOR,
nautilus_file_background_theme_changed,
background);
eel_preferences_remove_callback (NAUTILUS_PREFERENCES_BACKGROUND_FILENAME,
nautilus_file_background_theme_changed,
background);
}
/* key routine that hooks up a background and location */
void
nautilus_connect_background_to_file_metadata (GtkWidget *widget,
NautilusFile *file)
{
EelBackground *background;
gpointer old_file;
GList *attributes;
/* 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 (NAUTILUS_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);
nautilus_file_monitor_remove (old_file, background);
eel_preferences_remove_callback (NAUTILUS_PREFERENCES_THEME,
nautilus_file_background_theme_changed,
background);
}
/* Attach the new directory. */
nautilus_file_ref (file);
g_object_set_data_full (G_OBJECT (background), "eel_background_file",
file, (GDestroyNotify) nautilus_file_unref);
/* 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 */
attributes = g_list_prepend (NULL, NAUTILUS_FILE_ATTRIBUTE_METADATA);
nautilus_file_monitor_add (file,
background,
attributes);
g_list_free (attributes);
/* arrange for notification when the theme changes */
eel_preferences_add_callback (NAUTILUS_PREFERENCES_THEME,
nautilus_file_background_theme_changed, background);
eel_preferences_add_callback (NAUTILUS_PREFERENCES_BACKGROUND_SET,
nautilus_file_background_theme_changed, background);
eel_preferences_add_callback (NAUTILUS_PREFERENCES_BACKGROUND_COLOR,
nautilus_file_background_theme_changed, background);
eel_preferences_add_callback (NAUTILUS_PREFERENCES_BACKGROUND_FILENAME,
nautilus_file_background_theme_changed, background);
}
/* Update the background based on the file metadata. */
initialize_background_from_settings (file, background);
}
void
nautilus_connect_background_to_file_metadata_by_uri (GtkWidget *widget,
const char *uri)
{
NautilusFile *file;
file = nautilus_file_get (uri);
nautilus_connect_background_to_file_metadata (widget, file);
nautilus_file_unref (file);
}
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