/* -*- 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 */ #include #include "nautilus-directory-background.h" #include #include #include #include "nautilus-dnd.h" #include "nautilus-global-preferences.h" #include "nautilus-metadata.h" #include "nautilus-file-attributes.h" #include #include 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_background_theme_changed (gpointer user_data); 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_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. */ nautilus_connect_background_to_file_metadata (GTK_WIDGET (icon_container), file, NAUTILUS_DND_ACTION_SET_AS_FOLDER_BACKGROUND); nautilus_file_background_receive_gconf_changes (background); } 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; } } #define BG_PREFERENCES_DRAW_BACKGROUND "/desktop/gnome/background/draw_background" #define BG_PREFERENCES_PRIMARY_COLOR "/desktop/gnome/background/primary_color" #define BG_PREFERENCES_SECONDARY_COLOR "/desktop/gnome/background/secondary_color" #define BG_PREFERENCES_COLOR_SHADING_TYPE "/desktop/gnome/background/color_shading_type" #define BG_PREFERENCES_PICTURE_OPTIONS "/desktop/gnome/background/picture_options" #define BG_PREFERENCES_PICTURE_OPACITY "/desktop/gnome/background/picture_opacity" #define BG_PREFERENCES_PICTURE_FILENAME "/desktop/gnome/background/picture_filename" static void read_color (GConfClient *client, const char *key, GdkColor *color) { gchar *tmp; tmp = gconf_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 nautilus_file_background_read_desktop_settings (char **color, char **image, EelBackgroundImagePlacement *placement) { GConfClient *client; gboolean enabled; GdkColor primary, secondary; gchar *tmp, *filename; char *end_color; char *start_color; gboolean use_gradient; gboolean is_horizontal; filename = NULL; client = gconf_client_get_default (); /* Get the image filename */ enabled = gconf_client_get_bool (client, BG_PREFERENCES_DRAW_BACKGROUND, NULL); if (enabled) { tmp = gconf_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 = gconf_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, "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 = gconf_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 nautilus_file_background_write_desktop_default_settings (void) { /* 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); } g_object_set_data (G_OBJECT (background), "desktop_gconf_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_gconf_notification")); eel_gconf_notification_remove (notification_id); notification_timeout_id = GPOINTER_TO_UINT (g_object_get_data (G_OBJECT (background), "desktop_gconf_notification_timeout")); if (notification_timeout_id != 0) { g_source_remove (notification_timeout_id); } } static void desktop_background_gconf_notify_cb (GConfClient *client, guint notification_id, GConfEntry *entry, gpointer data) { EelBackground *background; guint notification_timeout_id; background = EEL_BACKGROUND (data); /* * Wallpaper capplet changes picture, background color and placement with * gconf_change_set API, but unfortunately, this operation is not atomic in * GConf as it should be. So we update background after small timeout to * let GConf change all values. */ notification_timeout_id = g_timeout_add (300, (GSourceFunc) call_settings_changed, background); g_object_set_data (G_OBJECT (background), "desktop_gconf_notification_timeout", GUINT_TO_POINTER (notification_timeout_id)); } 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); } /* 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 (eel_background_is_desktop (background)) { eel_background_save_to_gconf (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_FOLDER_BACKGROUND && action != NAUTILUS_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 == NAUTILUS_DND_ACTION_SET_AS_GLOBAL_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); } 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 (eel_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); 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); } /* 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 (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); }