diff options
| author | Jasmine Hassan <[email protected]> | 2012-11-28 01:33:08 +0200 |
|---|---|---|
| committer | Jasmine Hassan <[email protected]> | 2012-12-03 21:15:16 +0200 |
| commit | 532fbb1ce6bf446c8c5e40f8a49abc3e450a65d0 (patch) | |
| tree | 7b89f7baa470cbb06a4468e4f0fd64c78f86e77d /libcaja-private/caja-directory-background.c | |
| parent | 4ca41b3e2371f706dd129bd8938a55cf2e421ad8 (diff) | |
| download | caja-532fbb1ce6bf446c8c5e40f8a49abc3e450a65d0.tar.bz2 caja-532fbb1ce6bf446c8c5e40f8a49abc3e450a65d0.tar.xz | |
[directory-bg] rewrite/refactor, untangle directory & desktop bg-setting code
- Fixes crashes when resizing a VM window in VirtualBox.
- Adds a method to allow handling desktop reset.
Diffstat (limited to 'libcaja-private/caja-directory-background.c')
| -rw-r--r-- | libcaja-private/caja-directory-background.c | 741 |
1 files changed, 240 insertions, 501 deletions
diff --git a/libcaja-private/caja-directory-background.c b/libcaja-private/caja-directory-background.c index a445aab7..58e78d72 100644 --- a/libcaja-private/caja-directory-background.c +++ b/libcaja-private/caja-directory-background.c @@ -2,9 +2,10 @@ /* caja-directory-background.c: Helper for the background of a widget - that is viewing a particular location. + that is viewing a particular location. Copyright (C) 2000 Eazel, Inc. + Copyright (C) 2012 Jasmine Hassan <[email protected]> This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as @@ -21,7 +22,8 @@ Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. - Author: Darin Adler <[email protected]> + Authors: Darin Adler <[email protected]> + Jasmine Hassan <[email protected]> */ #include <config.h> @@ -36,553 +38,203 @@ #include "caja-file-attributes.h" #include <gtk/gtk.h> #include <string.h> +#define MATE_DESKTOP_USE_UNSTABLE_API +#include <libmateui/mate-bg.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_settings_changes (EelBackground *background); - -static void caja_file_background_theme_changed (GSettings *settings, - const gchar *key, - 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_settings_changes (background); -} +static void caja_background_changed_cb (EelBackground *background, + GdkDragAction action, + CajaFile *file); static void -caja_file_background_get_default_settings (char **color, - char **image, - EelBackgroundImagePlacement *placement) +caja_background_get_default_settings (char **color, + char **image) { gboolean background_set; background_set = g_settings_get_boolean (caja_preferences, CAJA_PREFERENCES_BACKGROUND_SET); if (background_set && color) - { *color = g_settings_get_string (caja_preferences, CAJA_PREFERENCES_BACKGROUND_COLOR); - } if (background_set && image) - { *image = g_settings_get_string (caja_preferences, CAJA_PREFERENCES_BACKGROUND_URI); - } - - if (placement) - { - *placement = EEL_BACKGROUND_TILED; - } } - -#define BG_PREFERENCES_DRAW_BACKGROUND "draw-background" -#define BG_PREFERENCES_PRIMARY_COLOR "primary-color" -#define BG_PREFERENCES_SECONDARY_COLOR "secondary-color" -#define BG_PREFERENCES_COLOR_SHADING_TYPE "color-shading-type" -#define BG_PREFERENCES_PICTURE_OPTIONS "picture-options" -#define BG_PREFERENCES_PICTURE_OPACITY "picture-opacity" -#define BG_PREFERENCES_PICTURE_FILENAME "picture-filename" - static void -read_color (const char *key, GdkColor *color) +caja_background_load_from_file_metadata (CajaFile *file, + EelBackground *background) { - gchar *tmp; - - tmp = g_settings_get_string (mate_background_preferences, key); - - if (tmp != NULL) - { - if (!gdk_color_parse (tmp, color)) - gdk_color_parse ("black", color); - g_free (tmp); - } - else - { - gdk_color_parse ("black", color); - } -} - -static void -caja_file_background_read_desktop_settings (char **color, - char **image, - EelBackgroundImagePlacement *placement) -{ - gboolean enabled; - GdkColor primary, secondary; - gchar *tmp, *filename; - char *end_color; - char *start_color; - gboolean use_gradient; - gboolean is_horizontal; - - filename = NULL; - - /* Get the image filename */ - enabled = g_settings_get_boolean (mate_background_preferences, BG_PREFERENCES_DRAW_BACKGROUND); - if (enabled) - { - tmp = g_settings_get_string (mate_background_preferences, BG_PREFERENCES_PICTURE_FILENAME); - 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 = g_settings_get_string (mate_background_preferences, BG_PREFERENCES_PICTURE_OPTIONS); - 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 = g_settings_get_string (mate_background_preferences, BG_PREFERENCES_COLOR_SHADING_TYPE); - 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 (BG_PREFERENCES_PRIMARY_COLOR, &primary); - read_color (BG_PREFERENCES_SECONDARY_COLOR, &secondary); + char *color, *image; - 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)); + 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); - if (use_gradient) - { - *color = eel_gradient_new (start_color, end_color, is_horizontal); - } - else - { - *color = g_strdup (start_color); - } + 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); - g_free (start_color); - g_free (end_color); -} + /* if there's none, read the default from the theme */ + if (color == NULL && image == NULL) + caja_background_get_default_settings (&color, &image); -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); - } - return FALSE; -} + /* 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 (caja_background_changed_cb), file); -static void -desktop_background_settings_notify_cb (GSettings *settings, gchar *key, gpointer data) -{ - EelBackground *background; + eel_background_set_color (background, color); + /* non-tiled only available for desktop, at least for now */ + eel_bg_set_placement (background, MATE_BG_PLACEMENT_TILED); + eel_background_set_image_uri (background, image); - background = EEL_BACKGROUND (data); + /* Unblock the handler. */ + g_signal_handlers_unblock_by_func (background, G_CALLBACK (caja_background_changed_cb), file); - call_settings_changed (background); + g_free (color); + g_free (image); } +/* handle the file changed signal */ static void -desktop_background_weak_notify (gpointer data, - GObject *object) +caja_background_settings_notify_cb (CajaFile *file, + EelBackground *background) { - g_signal_handlers_disconnect_by_func(mate_background_preferences, - G_CALLBACK (desktop_background_settings_notify_cb), - object); + caja_background_load_from_file_metadata (file, background); } +/* handle the theme changing */ static void -caja_file_background_receive_settings_changes (EelBackground *background) +caja_background_theme_notify_cb (GSettings *settings, + const gchar *key, + gpointer user_data) { - g_signal_connect (mate_background_preferences, - "changed", - G_CALLBACK (desktop_background_settings_notify_cb), - G_OBJECT (background)); - - g_object_weak_ref (G_OBJECT (background), - desktop_background_weak_notify, 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); + CajaFile *file; + EelBackground *background = EEL_BACKGROUND (user_data); - g_free (color); - g_free (image); + file = g_object_get_data (G_OBJECT (background), "eel_background_file"); - return is_set; + if (file) + caja_background_settings_notify_cb (file, background); } /* handle the background changed signal */ static void -background_changed_callback (EelBackground *background, - GdkDragAction action, - CajaFile *file) +caja_background_changed_cb (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); + char *color = eel_background_get_color (background); + char *image = eel_background_get_image_uri (background); - color = eel_background_get_color (background); - image = eel_background_get_image_uri (background); + /* 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 (caja_background_settings_notify_cb), + background); - if (eel_background_is_desktop (background)) + if (action != (GdkDragAction) CAJA_DND_ACTION_SET_AS_FOLDER_BACKGROUND && + action != (GdkDragAction) CAJA_DND_ACTION_SET_AS_GLOBAL_BACKGROUND) { - eel_background_save_to_settings (background); + action = (GdkDragAction) GPOINTER_TO_INT (g_object_get_data (G_OBJECT (background), + "default_drag_action")); } - else + + if (action == (GdkDragAction) CAJA_DND_ACTION_SET_AS_GLOBAL_BACKGROUND) { - /* 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); - - g_signal_handlers_block_by_func (caja_preferences, G_CALLBACK (caja_file_background_theme_changed), background); - - g_settings_set_string (caja_preferences, - CAJA_PREFERENCES_BACKGROUND_COLOR, color ? color : ""); - g_settings_set_string (caja_preferences, - CAJA_PREFERENCES_BACKGROUND_URI, - image ? image : ""); - g_settings_set_boolean (caja_preferences, - CAJA_PREFERENCES_BACKGROUND_SET, TRUE); - - g_signal_handlers_unblock_by_func (caja_preferences, G_CALLBACK (caja_file_background_theme_changed), background); - } - 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); + 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_signal_handlers_block_by_func (caja_preferences, + G_CALLBACK (caja_background_theme_notify_cb), + background); + + g_settings_set_string (caja_preferences, + CAJA_PREFERENCES_BACKGROUND_COLOR, color ? color : ""); + g_settings_set_string (caja_preferences, + CAJA_PREFERENCES_BACKGROUND_URI, image ? image : ""); + + g_settings_set_boolean (caja_preferences, CAJA_PREFERENCES_BACKGROUND_SET, TRUE); + + g_signal_handlers_unblock_by_func (caja_preferences, + G_CALLBACK (caja_background_theme_notify_cb), + background); + } 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 (caja_background_settings_notify_cb), + background); + g_free (color); g_free (image); } +/* handle the background reset signal by setting values from the current theme */ static void -initialize_background_from_settings (CajaFile *file, - EelBackground *background) +caja_background_reset_cb (EelBackground *background, + CajaFile *file) { - char *color; - char *image; - EelBackgroundImagePlacement placement; + char *color, *image; - 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); + /* 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 (caja_background_settings_notify_cb), + background); - if (eel_background_is_desktop (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) { - caja_file_background_read_desktop_settings (&color, &image, &placement); + g_signal_handlers_block_by_func (caja_preferences, + G_CALLBACK (caja_background_theme_notify_cb), + background); + g_settings_set_boolean (caja_preferences, CAJA_PREFERENCES_BACKGROUND_SET, FALSE); + g_signal_handlers_unblock_by_func (caja_preferences, + G_CALLBACK (caja_background_theme_notify_cb), + background); } 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); - } + /* 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); } - - /* 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 (GSettings *settings, - const gchar *key, - 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)) - { - /* 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) - { - g_signal_handlers_block_by_func (caja_preferences, G_CALLBACK (caja_file_background_theme_changed), background); - g_settings_set_boolean (caja_preferences, - CAJA_PREFERENCES_BACKGROUND_SET, - FALSE); - g_signal_handlers_unblock_by_func (caja_preferences, G_CALLBACK (caja_file_background_theme_changed), background); - } - 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); - } + /* Unblock the handler. */ + g_signal_handlers_unblock_by_func (file, G_CALLBACK (caja_background_settings_notify_cb), + background); - saved_settings_changed_callback (file, background); + caja_background_settings_notify_cb (file, background); } /* handle the background destroyed signal */ static void -background_weak_notify (gpointer data, - GObject *background) +caja_background_weak_notify (gpointer data, + GObject *background) { CajaFile *file = CAJA_FILE (data); - g_signal_handlers_disconnect_by_func - (file, - G_CALLBACK (saved_settings_changed_callback), background); + g_signal_handlers_disconnect_by_func (file, G_CALLBACK (caja_background_settings_notify_cb), + background); caja_file_monitor_remove (file, background); - g_signal_handlers_disconnect_by_func (caja_preferences, - caja_file_background_theme_changed, + g_signal_handlers_disconnect_by_func (caja_preferences, caja_background_theme_notify_cb, 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) +caja_connect_background_to_file_metadata (GtkWidget *widget, + CajaFile *file, + GdkDragAction default_drag_action) { EelBackground *background; gpointer old_file; @@ -593,9 +245,7 @@ caja_connect_background_to_file_metadata (GtkWidget *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) @@ -603,23 +253,19 @@ caja_connect_background_to_file_metadata (GtkWidget *widget, g_assert (CAJA_IS_FILE (old_file)); g_signal_handlers_disconnect_by_func (background, - G_CALLBACK (background_changed_callback), - old_file); - + G_CALLBACK (caja_background_changed_cb), old_file); g_signal_handlers_disconnect_by_func (background, - G_CALLBACK (background_reset_callback), - old_file); + G_CALLBACK (caja_background_reset_cb), old_file); - g_object_weak_unref (G_OBJECT (background), background_weak_notify, old_file); + g_object_weak_unref (G_OBJECT (background), caja_background_weak_notify, old_file); g_signal_handlers_disconnect_by_func (old_file, - G_CALLBACK (saved_settings_changed_callback), + G_CALLBACK (caja_background_settings_notify_cb), background); caja_file_monitor_remove (old_file, background); - g_signal_handlers_disconnect_by_func (caja_preferences, - caja_file_background_theme_changed, + g_signal_handlers_disconnect_by_func (caja_preferences, caja_background_theme_notify_cb, background); } @@ -628,42 +274,135 @@ caja_connect_background_to_file_metadata (GtkWidget *widget, 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)); + 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_CALLBACK (caja_background_changed_cb), file, 0); g_signal_connect_object (background, "reset", - G_CALLBACK (background_reset_callback), file, 0); + G_CALLBACK (caja_background_reset_cb), file, 0); g_signal_connect_object (file, "changed", - G_CALLBACK (saved_settings_changed_callback), background, 0); + G_CALLBACK (caja_background_settings_notify_cb), background, 0); - g_object_weak_ref (G_OBJECT (background), background_weak_notify, file); + g_object_weak_ref (G_OBJECT (background), caja_background_weak_notify, file); /* arrange to receive file metadata */ - caja_file_monitor_add (file, - background, - CAJA_FILE_ATTRIBUTE_INFO); + caja_file_monitor_add (file, background, CAJA_FILE_ATTRIBUTE_INFO); /* arrange for notification when the theme changes */ - g_signal_connect (caja_preferences, - "changed::" CAJA_PREFERENCES_BACKGROUND_SET, - G_CALLBACK(caja_file_background_theme_changed), - background); - g_signal_connect (caja_preferences, - "changed::" CAJA_PREFERENCES_BACKGROUND_COLOR, - G_CALLBACK(caja_file_background_theme_changed), - background); - g_signal_connect (caja_preferences, - "changed::" CAJA_PREFERENCES_BACKGROUND_URI, - G_CALLBACK(caja_file_background_theme_changed), - background); + g_signal_connect (caja_preferences, "changed::" CAJA_PREFERENCES_BACKGROUND_SET, + G_CALLBACK(caja_background_theme_notify_cb), background); + g_signal_connect (caja_preferences, "changed::" CAJA_PREFERENCES_BACKGROUND_COLOR, + G_CALLBACK(caja_background_theme_notify_cb), background); + g_signal_connect (caja_preferences, "changed::" CAJA_PREFERENCES_BACKGROUND_URI, + G_CALLBACK(caja_background_theme_notify_cb), background); } /* Update the background based on the file metadata. */ - initialize_background_from_settings (file, background); + caja_background_load_from_file_metadata (file, background); +} + +/** + * DESKTOP BACKGROUND HANDLING + */ + +/* handle the desktop background "settings_changed" signal */ +static void +desktop_background_changed_cb (EelBackground *background, + GdkDragAction action, + gpointer user_data) +{ + eel_bg_save_to_gsettings (background, + mate_background_preferences); +} + +/* delayed initializor of desktop background after GSettings changes */ +static gboolean +desktop_background_prefs_change_event_idle_cb (EelBackground *background) +{ + eel_bg_load_from_gsettings (background, + mate_background_preferences); + + eel_background_set_color (background, + eel_bg_get_desktop_color (background)); + + g_object_unref (background); + + return FALSE; /* remove from the list of event sources */ +} + +/* handle the desktop background "reset" signal: reset to schema's defaults */ +static void +desktop_background_reset_cb (EelBackground *background, + gpointer user_data) +{ + /* Reset to defaults, and save */ + eel_bg_load_from_system_gsettings (background, + mate_background_preferences, + TRUE); + /* Reload from saved settings */ + g_idle_add ((GSourceFunc) desktop_background_prefs_change_event_idle_cb, + g_object_ref (background)); +} + +/* handle the desktop GSettings "change-event" (batch changes) signal */ +static gboolean +desktop_background_prefs_change_event_cb (GSettings *settings, + gpointer keys, + gint n_keys, + gpointer user_data) +{ + EelBackground *background = user_data; + + /* Defer signal processing to avoid making the dconf backend deadlock, and + * hold a ref to avoid accessing fields of an object that was destroyed. + */ + g_idle_add ((GSourceFunc) desktop_background_prefs_change_event_idle_cb, + g_object_ref (background)); + + return FALSE; /* let the event propagate further */ +} + +static void +desktop_background_weak_notify (gpointer data, + GObject *object) +{ + g_signal_handlers_disconnect_by_func (mate_background_preferences, + G_CALLBACK (desktop_background_prefs_change_event_cb), + object); +} + +void +caja_connect_desktop_background_to_settings (CajaIconContainer *icon_container) +{ + EelBackground *background; + + background = eel_get_widget_background (GTK_WIDGET (icon_container)); + + eel_background_set_desktop (background, + GTK_WIDGET (icon_container), TRUE); + + g_signal_connect_object (background, "settings_changed", + G_CALLBACK (desktop_background_changed_cb), NULL, 0); + + g_signal_connect_object (background, "reset", + G_CALLBACK (desktop_background_reset_cb), NULL, 0); + + eel_bg_load_from_gsettings (background, + mate_background_preferences); + + /* Connect to "change-event" signal to receive *groups of changes* before + * they are split out into multiple emissions of the "changed" signal. + */ + g_signal_connect (mate_background_preferences, "change-event", + G_CALLBACK (desktop_background_prefs_change_event_cb), + background); + + g_object_weak_ref (G_OBJECT (background), + desktop_background_weak_notify, NULL); } |