mirror of
https://gitlab.gnome.org/GNOME/nautilus
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667 lines
26 KiB
C
667 lines
26 KiB
C
/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 8 -*- */
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/*
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nautilus-directory-background.c: Helper for the background of a widget
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that is viewing a particular location.
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Copyright (C) 2000 Eazel, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public
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License along with this program; if not, write to the
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Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Author: Darin Adler <darin@bentspoon.com>
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*/
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#include <config.h>
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#include "nautilus-directory-background.h"
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#include <eel/eel-gdk-extensions.h>
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#include <eel/eel-gtk-extensions.h>
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#include <eel/eel-background.h>
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#include "nautilus-dnd.h"
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#include "nautilus-global-preferences.h"
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#include "nautilus-metadata.h"
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#include "nautilus-file-attributes.h"
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#include <gtk/gtk.h>
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#include <string.h>
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static void background_changed_callback (EelBackground *background,
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GdkDragAction action,
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NautilusFile *file);
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static void background_reset_callback (EelBackground *background,
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NautilusFile *file);
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static void saved_settings_changed_callback (NautilusFile *file,
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EelBackground *background);
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static void nautilus_file_background_receive_gconf_changes (EelBackground *background);
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static void nautilus_file_background_theme_changed (gpointer user_data);
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void
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nautilus_connect_desktop_background_to_file_metadata (NautilusIconContainer *icon_container,
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NautilusFile *file)
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{
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EelBackground *background;
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background = eel_get_widget_background (GTK_WIDGET (icon_container));
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eel_background_set_desktop (background, GTK_WIDGET (icon_container), TRUE);
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/* Strictly speaking, we don't need to know about metadata changes, since
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* the desktop setting aren't stored there. But, hooking up to metadata
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* changes is actually a small part of what this fn does, and we do need
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* the other stuff (hooked up to background & theme changes, initialize
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* the background). Being notified of metadata changes on the file is a
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* waste, but won't hurt, so I don't think it's worth refactoring the fn
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* at this point.
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*/
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nautilus_connect_background_to_file_metadata (GTK_WIDGET (icon_container), file, NAUTILUS_DND_ACTION_SET_AS_FOLDER_BACKGROUND);
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nautilus_file_background_receive_gconf_changes (background);
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}
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static void
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nautilus_file_background_get_default_settings (char **color,
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char **image,
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EelBackgroundImagePlacement *placement)
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{
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gboolean background_set;
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background_set = eel_preferences_get_boolean
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(NAUTILUS_PREFERENCES_BACKGROUND_SET);
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if (background_set && color) {
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*color = eel_preferences_get (NAUTILUS_PREFERENCES_BACKGROUND_COLOR);
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}
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if (background_set && image) {
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*image = eel_preferences_get (NAUTILUS_PREFERENCES_BACKGROUND_FILENAME);
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}
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if (placement) {
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*placement = EEL_BACKGROUND_TILED;
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}
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}
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#define BG_PREFERENCES_DRAW_BACKGROUND "/desktop/gnome/background/draw_background"
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#define BG_PREFERENCES_PRIMARY_COLOR "/desktop/gnome/background/primary_color"
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#define BG_PREFERENCES_SECONDARY_COLOR "/desktop/gnome/background/secondary_color"
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#define BG_PREFERENCES_COLOR_SHADING_TYPE "/desktop/gnome/background/color_shading_type"
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#define BG_PREFERENCES_PICTURE_OPTIONS "/desktop/gnome/background/picture_options"
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#define BG_PREFERENCES_PICTURE_OPACITY "/desktop/gnome/background/picture_opacity"
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#define BG_PREFERENCES_PICTURE_FILENAME "/desktop/gnome/background/picture_filename"
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static void
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read_color (GConfClient *client, const char *key, GdkColor *color)
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{
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gchar *tmp;
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tmp = gconf_client_get_string (client, key, NULL);
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if (tmp != NULL) {
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if (!gdk_color_parse (tmp, color))
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gdk_color_parse ("black", color);
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g_free (tmp);
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}
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else {
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gdk_color_parse ("black", color);
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}
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gdk_rgb_find_color (gdk_rgb_get_colormap (), color);
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}
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static void
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nautilus_file_background_read_desktop_settings (char **color,
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char **image,
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EelBackgroundImagePlacement *placement)
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{
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GConfClient *client;
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gboolean enabled;
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GdkColor primary, secondary;
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gchar *tmp, *filename;
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char *end_color;
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char *start_color;
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gboolean use_gradient;
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gboolean is_horizontal;
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filename = NULL;
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client = gconf_client_get_default ();
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/* Get the image filename */
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enabled = gconf_client_get_bool (client, BG_PREFERENCES_DRAW_BACKGROUND, NULL);
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if (enabled) {
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tmp = gconf_client_get_string (client, BG_PREFERENCES_PICTURE_FILENAME, NULL);
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if (tmp != NULL) {
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if (g_utf8_validate (tmp, -1, NULL) && g_file_test (tmp, G_FILE_TEST_EXISTS)) {
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filename = g_strdup (tmp);
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}
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else {
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filename = g_filename_from_utf8 (tmp, -1, NULL, NULL, NULL);
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}
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}
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g_free (tmp);
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if (filename != NULL && filename[0] != '\0') {
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*image = g_filename_to_uri (filename, NULL, NULL);
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}
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else {
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*image = NULL;
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}
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g_free (filename);
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}
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else {
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*image = NULL;
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}
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/* Get the placement */
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tmp = gconf_client_get_string (client, BG_PREFERENCES_PICTURE_OPTIONS, NULL);
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if (tmp != NULL) {
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if (strcmp (tmp, "wallpaper") == 0) {
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*placement = EEL_BACKGROUND_TILED;
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}
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else if (strcmp (tmp, "centered") == 0) {
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*placement = EEL_BACKGROUND_CENTERED;
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}
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else if (strcmp (tmp, "scaled") == 0) {
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*placement = EEL_BACKGROUND_SCALED_ASPECT;
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}
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else if (strcmp (tmp, "stretched") == 0) {
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*placement = EEL_BACKGROUND_SCALED;
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}
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else if (strcmp (tmp, "zoom") == 0) {
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*placement = EEL_BACKGROUND_ZOOM;
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}
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else if (strcmp (tmp, "none") == 0) {
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g_free (*image);
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*placement = EEL_BACKGROUND_CENTERED;
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*image = NULL;
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}
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else {
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*placement = EEL_BACKGROUND_CENTERED;
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}
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}
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else {
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*placement = EEL_BACKGROUND_CENTERED;
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}
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g_free (tmp);
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/* Get the color */
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tmp = gconf_client_get_string (client, BG_PREFERENCES_COLOR_SHADING_TYPE, NULL);
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if (tmp != NULL) {
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if (strcmp (tmp, "solid") == 0) {
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use_gradient = FALSE;
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is_horizontal = FALSE;
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}
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else if (strcmp (tmp, "vertical-gradient") == 0) {
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use_gradient = TRUE;
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is_horizontal = FALSE;
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}
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else if (strcmp (tmp, "horizontal-gradient") == 0) {
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use_gradient = TRUE;
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is_horizontal = TRUE;
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}
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else {
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use_gradient = FALSE;
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is_horizontal = FALSE;
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}
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}
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else {
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use_gradient = FALSE;
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is_horizontal = FALSE;
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}
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g_free (tmp);
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read_color (client, BG_PREFERENCES_PRIMARY_COLOR, &primary);
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read_color (client, BG_PREFERENCES_SECONDARY_COLOR, &secondary);
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start_color = eel_gdk_rgb_to_color_spec (eel_gdk_color_to_rgb (&primary));
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end_color = eel_gdk_rgb_to_color_spec (eel_gdk_color_to_rgb (&secondary));
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if (use_gradient) {
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*color = eel_gradient_new (start_color, end_color, is_horizontal);
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} else {
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*color = g_strdup (start_color);
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}
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g_free (start_color);
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g_free (end_color);
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}
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static void
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nautilus_file_background_write_desktop_default_settings (void)
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{
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/* We just unset all the gconf keys so they go back to
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* defaults
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*/
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GConfClient *client;
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GConfChangeSet *set;
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client = gconf_client_get_default ();
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set = gconf_change_set_new ();
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/* the list of keys here has to be kept in sync with libgnome
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* schemas, which isn't the most maintainable thing ever.
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*/
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gconf_change_set_unset (set, "/desktop/gnome/background/picture_options");
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gconf_change_set_unset (set, "/desktop/gnome/background/picture_filename");
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gconf_change_set_unset (set, "/desktop/gnome/background/picture_opacity");
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gconf_change_set_unset (set, "/desktop/gnome/background/primary_color");
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gconf_change_set_unset (set, "/desktop/gnome/background/secondary_color");
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gconf_change_set_unset (set, "/desktop/gnome/background/color_shading_type");
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/* this isn't atomic yet so it'll be a bit inefficient, but
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* someday it might be atomic.
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*/
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gconf_client_commit_change_set (client, set, FALSE, NULL);
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gconf_change_set_unref (set);
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g_object_unref (G_OBJECT (client));
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}
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static int
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call_settings_changed (EelBackground *background)
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{
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NautilusFile *file;
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file = g_object_get_data (G_OBJECT (background), "eel_background_file");
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if (file) {
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saved_settings_changed_callback (file, background);
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}
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g_object_set_data (G_OBJECT (background), "desktop_gconf_notification_timeout", GUINT_TO_POINTER (0));
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return FALSE;
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}
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static void
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desktop_background_destroyed_callback (EelBackground *background, void *georgeWBush)
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{
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guint notification_id;
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guint notification_timeout_id;
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notification_id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (background), "desktop_gconf_notification"));
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eel_gconf_notification_remove (notification_id);
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notification_timeout_id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (background), "desktop_gconf_notification_timeout"));
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if (notification_timeout_id != 0) {
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g_source_remove (notification_timeout_id);
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}
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}
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static void
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desktop_background_gconf_notify_cb (GConfClient *client, guint notification_id, GConfEntry *entry, gpointer data)
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{
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EelBackground *background;
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guint notification_timeout_id;
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background = EEL_BACKGROUND (data);
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/*
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* Wallpaper capplet changes picture, background color and placement with
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* gconf_change_set API, but unfortunately, this operation is not atomic in
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* GConf as it should be. So we update background after small timeout to
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* let GConf change all values.
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*/
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notification_timeout_id = g_timeout_add (300, (GSourceFunc) call_settings_changed, background);
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g_object_set_data (G_OBJECT (background), "desktop_gconf_notification_timeout", GUINT_TO_POINTER (notification_timeout_id));
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}
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static void
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nautilus_file_background_receive_gconf_changes (EelBackground *background)
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{
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guint notification_id;
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eel_gconf_monitor_add ("/desktop/gnome/background");
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notification_id = eel_gconf_notification_add ("/desktop/gnome/background", desktop_background_gconf_notify_cb, background);
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g_object_set_data (G_OBJECT (background), "desktop_gconf_notification", GUINT_TO_POINTER (notification_id));
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g_signal_connect (background, "destroy",
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G_CALLBACK (desktop_background_destroyed_callback), NULL);
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}
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/* return true if the background is not in the default state */
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gboolean
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nautilus_file_background_is_set (EelBackground *background)
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{
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char *color;
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char *image;
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gboolean is_set;
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color = eel_background_get_color (background);
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image = eel_background_get_image_uri (background);
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is_set = (color || image);
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g_free (color);
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g_free (image);
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return is_set;
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}
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/* handle the background changed signal */
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static void
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background_changed_callback (EelBackground *background,
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GdkDragAction action,
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NautilusFile *file)
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{
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char *color;
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char *image;
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g_assert (EEL_IS_BACKGROUND (background));
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g_assert (NAUTILUS_IS_FILE (file));
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g_assert (g_object_get_data (G_OBJECT (background), "eel_background_file") == file);
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color = eel_background_get_color (background);
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image = eel_background_get_image_uri (background);
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if (eel_background_is_desktop (background)) {
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eel_background_save_to_gconf (background);
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} else {
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/* Block the other handler while we are writing metadata so it doesn't
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* try to change the background.
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*/
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g_signal_handlers_block_by_func (
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file, G_CALLBACK (saved_settings_changed_callback), background);
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if (action != NAUTILUS_DND_ACTION_SET_AS_FOLDER_BACKGROUND && action != NAUTILUS_DND_ACTION_SET_AS_GLOBAL_BACKGROUND) {
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GdkDragAction default_drag_action;
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default_drag_action = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (background), "default_drag_action"));
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action = default_drag_action;
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}
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if (action == NAUTILUS_DND_ACTION_SET_AS_GLOBAL_BACKGROUND) {
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nautilus_file_set_metadata (file,
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NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
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NULL,
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NULL);
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nautilus_file_set_metadata (file,
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NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
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NULL,
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NULL);
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eel_preferences_set
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(NAUTILUS_PREFERENCES_BACKGROUND_COLOR, color ? color : "");
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eel_preferences_set
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(NAUTILUS_PREFERENCES_BACKGROUND_FILENAME, image ? image : "");
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eel_preferences_set_boolean
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(NAUTILUS_PREFERENCES_BACKGROUND_SET, TRUE);
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} else {
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nautilus_file_set_metadata (file,
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NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
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NULL,
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color);
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nautilus_file_set_metadata (file,
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NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
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NULL,
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image);
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}
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/* Unblock the handler. */
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g_signal_handlers_unblock_by_func (
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file, G_CALLBACK (saved_settings_changed_callback), background);
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}
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g_free (color);
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g_free (image);
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}
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static void
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initialize_background_from_settings (NautilusFile *file,
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EelBackground *background)
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{
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char *color;
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char *image;
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EelBackgroundImagePlacement placement;
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g_assert (NAUTILUS_IS_FILE (file));
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g_assert (EEL_IS_BACKGROUND (background));
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g_assert (g_object_get_data (G_OBJECT (background), "eel_background_file")
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== file);
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if (eel_background_is_desktop (background)) {
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nautilus_file_background_read_desktop_settings (&color, &image, &placement);
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} else {
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color = nautilus_file_get_metadata (file,
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NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_COLOR,
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NULL);
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image = nautilus_file_get_metadata (file,
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NAUTILUS_METADATA_KEY_LOCATION_BACKGROUND_IMAGE,
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NULL);
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placement = EEL_BACKGROUND_TILED; /* non-tiled only avail for desktop, at least for now */
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/* if there's none, read the default from the theme */
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if (color == NULL && image == NULL) {
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nautilus_file_background_get_default_settings
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(&color, &image, &placement);
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}
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}
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/* Block the other handler while we are responding to changes
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* in the metadata so it doesn't try to change the metadata.
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*/
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g_signal_handlers_block_by_func
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(background,
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G_CALLBACK (background_changed_callback),
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file);
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eel_background_set_color (background, color);
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eel_background_set_image_uri (background, image);
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eel_background_set_image_placement (background, placement);
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/* Unblock the handler. */
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g_signal_handlers_unblock_by_func
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(background,
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G_CALLBACK (background_changed_callback),
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file);
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g_free (color);
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g_free (image);
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}
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/* handle the file changed signal */
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static void
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saved_settings_changed_callback (NautilusFile *file,
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EelBackground *background)
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{
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initialize_background_from_settings (file, background);
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}
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/* handle the theme changing */
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static void
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nautilus_file_background_theme_changed (gpointer user_data)
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{
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NautilusFile *file;
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EelBackground *background;
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background = EEL_BACKGROUND (user_data);
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file = g_object_get_data (G_OBJECT (background), "eel_background_file");
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if (file) {
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saved_settings_changed_callback (file, background);
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}
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}
|
|
|
|
/* 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 (eel_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,
|
|
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 (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);
|
|
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);
|
|
|
|
}
|
|
|
|
/* Attach the new directory. */
|
|
nautilus_file_ref (file);
|
|
g_object_set_data_full (G_OBJECT (background), "eel_background_file",
|
|
file, (GDestroyNotify) nautilus_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 */
|
|
nautilus_file_monitor_add (file,
|
|
background,
|
|
NAUTILUS_FILE_ATTRIBUTE_METADATA);
|
|
|
|
/* 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);
|
|
}
|