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gnome-control-center/panels/background/bg-pictures-source.c

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/* bg-pictures-source.c */
/*
* Copyright (C) 2010 Intel, 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, see <http://www.gnu.org/licenses/>.
*
* Author: Thomas Wood <thomas.wood@intel.com>
*
*/
#include <config.h>
#include "bg-pictures-source.h"
#include "cc-background-grilo-miner.h"
#include "cc-background-item.h"
#include <string.h>
#include <cairo-gobject.h>
#include <gio/gio.h>
#include <grilo.h>
#include <libgnome-desktop/gnome-desktop-thumbnail.h>
#include <gdesktop-enums.h>
#define ATTRIBUTES G_FILE_ATTRIBUTE_STANDARD_NAME "," \
G_FILE_ATTRIBUTE_STANDARD_CONTENT_TYPE "," \
G_FILE_ATTRIBUTE_TIME_MODIFIED
struct _BgPicturesSource
{
BgSource parent_instance;
GCancellable *cancellable;
CcBackgroundGriloMiner *grl_miner;
GnomeDesktopThumbnailFactory *thumb_factory;
GFileMonitor *picture_dir_monitor;
GFileMonitor *cache_dir_monitor;
GHashTable *known_items;
};
G_DEFINE_TYPE (BgPicturesSource, bg_pictures_source, BG_TYPE_SOURCE)
const char * const content_types[] = {
"image/png",
"image/jp2",
"image/jpeg",
"image/bmp",
"image/svg+xml",
"image/x-portable-anymap",
NULL
};
const char * const screenshot_types[] = {
"image/png",
NULL
};
static char *bg_pictures_source_get_unique_filename (const char *uri);
static void picture_opened_for_read (GObject *source_object, GAsyncResult *res, gpointer user_data);
static void
bg_pictures_source_dispose (GObject *object)
{
BgPicturesSource *source = BG_PICTURES_SOURCE (object);
if (source->cancellable)
{
g_cancellable_cancel (source->cancellable);
g_clear_object (&source->cancellable);
}
g_clear_object (&source->grl_miner);
g_clear_object (&source->thumb_factory);
G_OBJECT_CLASS (bg_pictures_source_parent_class)->dispose (object);
}
static void
bg_pictures_source_finalize (GObject *object)
{
BgPicturesSource *bg_source = BG_PICTURES_SOURCE (object);
g_clear_object (&bg_source->thumb_factory);
g_clear_pointer (&bg_source->known_items, g_hash_table_destroy);
g_clear_object (&bg_source->picture_dir_monitor);
g_clear_object (&bg_source->cache_dir_monitor);
G_OBJECT_CLASS (bg_pictures_source_parent_class)->finalize (object);
}
static void
bg_pictures_source_class_init (BgPicturesSourceClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->dispose = bg_pictures_source_dispose;
object_class->finalize = bg_pictures_source_finalize;
}
static void
remove_placeholder (BgPicturesSource *bg_source, CcBackgroundItem *item)
{
GtkListStore *store;
GtkTreeIter iter;
GtkTreePath *path;
GtkTreeRowReference *row_ref;
store = bg_source_get_liststore (BG_SOURCE (bg_source));
row_ref = g_object_get_data (G_OBJECT (item), "row-ref");
if (row_ref == NULL)
return;
path = gtk_tree_row_reference_get_path (row_ref);
if (!gtk_tree_model_get_iter (GTK_TREE_MODEL (store), &iter, path))
return;
gtk_list_store_remove (store, &iter);
}
static gboolean
picture_needs_rotation (GdkPixbuf *pixbuf)
{
const gchar *str;
str = gdk_pixbuf_get_option (pixbuf, "orientation");
if (str == NULL)
return FALSE;
if (*str == '5' || *str == '6' || *str == '7' || *str == '8')
return TRUE;
return FALSE;
}
static GdkPixbuf *
swap_rotated_pixbuf (GdkPixbuf *pixbuf)
{
GdkPixbuf *tmp_pixbuf;
tmp_pixbuf = gdk_pixbuf_apply_embedded_orientation (pixbuf);
if (tmp_pixbuf == NULL)
return pixbuf;
g_object_unref (pixbuf);
return tmp_pixbuf;
}
static void
picture_scaled (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
BgPicturesSource *bg_source;
CcBackgroundItem *item;
g_autoptr(GError) error = NULL;
g_autoptr(GdkPixbuf) pixbuf = NULL;
const char *software;
const char *uri;
GtkTreeIter iter;
GtkTreePath *path;
GtkTreeRowReference *row_ref;
GtkListStore *store;
cairo_surface_t *surface = NULL;
int scale_factor;
gboolean rotation_applied;
item = g_object_get_data (source_object, "item");
pixbuf = gdk_pixbuf_new_from_stream_finish (res, &error);
if (pixbuf == NULL)
{
if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
{
g_warning ("Failed to load image: %s", error->message);
remove_placeholder (BG_PICTURES_SOURCE (user_data), item);
}
return;
}
/* since we were not cancelled, we can now cast user_data
* back to BgPicturesSource.
*/
bg_source = BG_PICTURES_SOURCE (user_data);
store = bg_source_get_liststore (BG_SOURCE (bg_source));
uri = cc_background_item_get_uri (item);
if (uri == NULL)
uri = cc_background_item_get_source_url (item);
/* Ignore screenshots */
software = gdk_pixbuf_get_option (pixbuf, "tEXt::Software");
if (software != NULL &&
g_str_equal (software, "gnome-screenshot"))
{
g_debug ("Ignored URL '%s' as it's a screenshot from gnome-screenshot", uri);
remove_placeholder (BG_PICTURES_SOURCE (user_data), item);
return;
}
/* Process embedded orientation */
rotation_applied = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (item), "rotation-applied"));
if (!rotation_applied && picture_needs_rotation (pixbuf))
{
/* the width and height of pixbuf we requested are wrong for EXIF
* orientations 5, 6, 7 and 8. the file has to be reloaded. */
g_autoptr(GFile) file = NULL;
file = g_file_new_for_uri (uri);
g_object_set_data (G_OBJECT (item), "needs-rotation", GINT_TO_POINTER (TRUE));
g_object_set_data_full (G_OBJECT (file), "item", g_object_ref (item), g_object_unref);
g_file_read_async (G_FILE (file), G_PRIORITY_DEFAULT,
bg_source->cancellable,
picture_opened_for_read, bg_source);
return;
}
pixbuf = swap_rotated_pixbuf (pixbuf);
scale_factor = bg_source_get_scale_factor (BG_SOURCE (bg_source));
surface = gdk_cairo_surface_create_from_pixbuf (pixbuf, scale_factor, NULL);
cc_background_item_load (item, NULL);
row_ref = g_object_get_data (G_OBJECT (item), "row-ref");
if (row_ref == NULL)
{
/* insert the item into the liststore if it did not exist */
gtk_list_store_insert_with_values (store, NULL, -1,
0, surface,
1, item,
-1);
}
else
{
path = gtk_tree_row_reference_get_path (row_ref);
if (gtk_tree_model_get_iter (GTK_TREE_MODEL (store), &iter, path))
{
/* otherwise update the thumbnail */
gtk_list_store_set (store, &iter,
0, surface,
-1);
}
}
g_hash_table_insert (bg_source->known_items,
bg_pictures_source_get_unique_filename (uri),
GINT_TO_POINTER (TRUE));
g_clear_pointer (&surface, (GDestroyNotify) cairo_surface_destroy);
}
static void
picture_opened_for_read (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
BgPicturesSource *bg_source;
CcBackgroundItem *item;
g_autoptr(GFileInputStream) stream = NULL;
g_autoptr(GError) error = NULL;
gint thumbnail_height;
gint thumbnail_width;
gboolean needs_rotation;
item = g_object_get_data (source_object, "item");
stream = g_file_read_finish (G_FILE (source_object), res, &error);
if (stream == NULL)
{
if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
{
g_autofree gchar *filename = g_file_get_path (G_FILE (source_object));
g_warning ("Failed to load picture '%s': %s", filename, error->message);
remove_placeholder (BG_PICTURES_SOURCE (user_data), item);
}
return;
}
/* since we were not cancelled, we can now cast user_data
* back to BgPicturesSource.
*/
bg_source = BG_PICTURES_SOURCE (user_data);
needs_rotation = GPOINTER_TO_INT (g_object_get_data (G_OBJECT (item), "needs-rotation"));
if (needs_rotation)
{
/* swap width and height for EXIF orientations that need it */
thumbnail_width = bg_source_get_thumbnail_height (BG_SOURCE (bg_source));
thumbnail_height = bg_source_get_thumbnail_width (BG_SOURCE (bg_source));
g_object_set_data (G_OBJECT (item), "rotation-applied", GINT_TO_POINTER (TRUE));
}
else
{
thumbnail_width = bg_source_get_thumbnail_width (BG_SOURCE (bg_source));
thumbnail_height = bg_source_get_thumbnail_height (BG_SOURCE (bg_source));
}
g_object_set_data_full (G_OBJECT (stream), "item", g_object_ref (item), g_object_unref);
gdk_pixbuf_new_from_stream_at_scale_async (G_INPUT_STREAM (stream),
thumbnail_width, thumbnail_height,
TRUE,
bg_source->cancellable,
picture_scaled, bg_source);
}
static void
picture_copied_for_read (GObject *source_object,
GAsyncResult *res,
gpointer user_data)
{
BgPicturesSource *bg_source;
CcBackgroundItem *item;
g_autoptr(GError) error = NULL;
GFile *thumbnail_file = G_FILE (source_object);
GFile *native_file;
if (!g_file_copy_finish (thumbnail_file, res, &error))
{
if (g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
return;
else if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_EXISTS))
{
g_autofree gchar *uri = NULL;
uri = g_file_get_uri (thumbnail_file);
g_warning ("Failed to download '%s': %s", uri, error->message);
return;
}
}
bg_source = BG_PICTURES_SOURCE (user_data);
native_file = g_object_get_data (G_OBJECT (thumbnail_file), "native-file");
item = g_object_get_data (G_OBJECT (thumbnail_file), "item");
g_object_set_data_full (G_OBJECT (native_file), "item", g_object_ref (item), g_object_unref);
g_file_read_async (native_file,
G_PRIORITY_DEFAULT,
bg_source->cancellable,
picture_opened_for_read,
bg_source);
}
static gboolean
in_content_types (const char *content_type)
{
guint i;
for (i = 0; content_types[i]; i++)
if (g_str_equal (content_types[i], content_type))
return TRUE;
return FALSE;
}
static gboolean
in_screenshot_types (const char *content_type)
{
guint i;
for (i = 0; screenshot_types[i]; i++)
if (g_str_equal (screenshot_types[i], content_type))
return TRUE;
return FALSE;
}
static cairo_surface_t *
get_content_loading_icon (BgSource *source)
{
GtkIconTheme *theme;
g_autoptr(GtkIconInfo) icon_info = NULL;
g_autoptr(GdkPixbuf) pixbuf = NULL;
g_autoptr(GdkPixbuf) ret = NULL;
g_autoptr(GError) error = NULL;
int scale_factor;
cairo_surface_t *surface;
int thumbnail_height;
int thumbnail_width;
theme = gtk_icon_theme_get_default ();
icon_info = gtk_icon_theme_lookup_icon (theme,
"content-loading-symbolic",
16,
GTK_ICON_LOOKUP_FORCE_SIZE | GTK_ICON_LOOKUP_GENERIC_FALLBACK);
if (icon_info == NULL)
{
g_warning ("Failed to find placeholder icon");
return NULL;
}
pixbuf = gtk_icon_info_load_icon (icon_info, &error);
if (pixbuf == NULL)
{
g_warning ("Failed to load placeholder icon: %s", error->message);
return NULL;
}
thumbnail_height = bg_source_get_thumbnail_height (source);
thumbnail_width = bg_source_get_thumbnail_width (source);
ret = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
TRUE,
8, thumbnail_width, thumbnail_height);
gdk_pixbuf_fill (ret, 0x00000000);
/* Put the icon in the middle */
gdk_pixbuf_copy_area (pixbuf, 0, 0,
gdk_pixbuf_get_width (pixbuf), gdk_pixbuf_get_height (pixbuf),
ret,
(thumbnail_width - gdk_pixbuf_get_width (pixbuf)) / 2,
(thumbnail_height - gdk_pixbuf_get_height (pixbuf)) / 2);
scale_factor = bg_source_get_scale_factor (source);
surface = gdk_cairo_surface_create_from_pixbuf (ret, scale_factor, NULL);
return surface;
}
static GFile *
bg_pictures_source_get_cache_file (void)
{
g_autofree gchar *path = NULL;
GFile *file;
path = bg_pictures_source_get_cache_path ();
file = g_file_new_for_path (path);
return file;
}
static gboolean
add_single_file (BgPicturesSource *bg_source,
GFile *file,
const gchar *content_type,
guint64 mtime,
GtkTreeRowReference **ret_row_ref)
{
g_autoptr(CcBackgroundItem) item = NULL;
CcBackgroundItemFlags flags = 0;
GtkListStore *store;
GtkTreeIter iter;
GtkTreePath *path = NULL;
GtkTreeRowReference *row_ref = NULL;
cairo_surface_t *surface = NULL;
g_autofree gchar *source_uri = NULL;
g_autofree gchar *uri = NULL;
gboolean needs_download;
gboolean retval = FALSE;
g_autoptr(GFile) pictures_dir = NULL;
g_autoptr(GFile) cache_dir = NULL;
GrlMedia *media;
/* find png and jpeg files */
if (!content_type)
goto out;
if (!in_content_types (content_type))
goto out;
/* create a new CcBackgroundItem */
uri = g_file_get_uri (file);
pictures_dir = g_file_new_for_path (g_get_user_special_dir (G_USER_DIRECTORY_PICTURES));
cache_dir = bg_pictures_source_get_cache_file ();
needs_download = !g_file_has_parent (file, pictures_dir) &&
!g_file_has_parent (file, cache_dir);
if (!needs_download)
{
source_uri = g_strdup (uri);
flags |= CC_BACKGROUND_ITEM_HAS_URI;
}
else
{
source_uri = g_steal_pointer (&uri);
}
item = cc_background_item_new (uri);
flags |= CC_BACKGROUND_ITEM_HAS_SHADING | CC_BACKGROUND_ITEM_HAS_PLACEMENT;
g_object_set (G_OBJECT (item),
"flags", flags,
"shading", G_DESKTOP_BACKGROUND_SHADING_SOLID,
"placement", G_DESKTOP_BACKGROUND_STYLE_ZOOM,
"modified", mtime,
"needs-download", needs_download,
"source-url", source_uri,
NULL);
if (!ret_row_ref && in_screenshot_types (content_type))
goto read_file;
surface = get_content_loading_icon (BG_SOURCE (bg_source));
store = bg_source_get_liststore (BG_SOURCE (bg_source));
/* insert the item into the liststore */
gtk_list_store_insert_with_values (store, &iter, -1,
0, surface,
1, item,
-1);
path = gtk_tree_model_get_path (GTK_TREE_MODEL (store), &iter);
row_ref = gtk_tree_row_reference_new (GTK_TREE_MODEL (store), path);
g_object_set_data_full (G_OBJECT (item), "row-ref", row_ref, (GDestroyNotify) gtk_tree_row_reference_free);
read_file:
media = g_object_get_data (G_OBJECT (file), "grl-media");
if (media == NULL)
{
g_object_set_data_full (G_OBJECT (file), "item", g_object_ref (item), g_object_unref);
g_file_read_async (file, G_PRIORITY_DEFAULT,
bg_source->cancellable,
picture_opened_for_read, bg_source);
}
else
{
g_autoptr(GFile) native_file = NULL;
g_autoptr(GFile) thumbnail_file = NULL;
g_autofree gchar *native_dir = NULL;
g_autofree gchar *native_path = NULL;
const gchar *title;
const gchar *thumbnail_uri;
title = grl_media_get_title (media);
g_object_set (G_OBJECT (item), "name", title, NULL);
thumbnail_uri = grl_media_get_thumbnail (media);
thumbnail_file = g_file_new_for_uri (thumbnail_uri);
native_path = gnome_desktop_thumbnail_path_for_uri (source_uri, GNOME_DESKTOP_THUMBNAIL_SIZE_LARGE);
native_file = g_file_new_for_path (native_path);
native_dir = g_path_get_dirname (native_path);
g_mkdir_with_parents (native_dir, USER_DIR_MODE);
g_object_set_data_full (G_OBJECT (thumbnail_file), "item", g_object_ref (item), g_object_unref);
g_object_set_data_full (G_OBJECT (thumbnail_file),
"native-file",
g_object_ref (native_file),
g_object_unref);
g_file_copy_async (thumbnail_file,
native_file,
G_FILE_COPY_ALL_METADATA,
G_PRIORITY_DEFAULT,
bg_source->cancellable,
NULL,
NULL,
picture_copied_for_read,
bg_source);
}
retval = TRUE;
out:
if (ret_row_ref)
{
if (row_ref && retval != FALSE)
*ret_row_ref = gtk_tree_row_reference_copy (row_ref);
else
*ret_row_ref = NULL;
}
gtk_tree_path_free (path);
g_clear_pointer (&surface, (GDestroyNotify) cairo_surface_destroy);
return retval;
}
static gboolean
add_single_file_from_info (BgPicturesSource *bg_source,
GFile *file,
GFileInfo *info,
GtkTreeRowReference **ret_row_ref)
{
const gchar *content_type;
guint64 mtime;
content_type = g_file_info_get_content_type (info);
mtime = g_file_info_get_attribute_uint64 (info, G_FILE_ATTRIBUTE_TIME_MODIFIED);
return add_single_file (bg_source, file, content_type, mtime, ret_row_ref);
}
static gboolean
add_single_file_from_media (BgPicturesSource *bg_source,
GFile *file,
GrlMedia *media)
{
GDateTime *mtime;
const gchar *content_type;
gint64 mtime_unix;
content_type = grl_media_get_mime (media);
/* only GRL_METADATA_KEY_CREATION_DATE is implemented in the Flickr
* plugin, GRL_METADATA_KEY_MODIFICATION_DATE is not
*/
mtime = grl_media_get_creation_date (media);
if (!mtime)
mtime = grl_media_get_modification_date (media);
if (mtime)
mtime_unix = g_date_time_to_unix (mtime);
else
mtime_unix = g_get_real_time () / G_USEC_PER_SEC;
return add_single_file (bg_source, file, content_type, (guint64) mtime_unix, NULL);
}
gboolean
bg_pictures_source_add (BgPicturesSource *bg_source,
const char *uri,
GtkTreeRowReference **ret_row_ref)
{
g_autoptr(GFile) file = NULL;
GFileInfo *info;
gboolean retval;
file = g_file_new_for_uri (uri);
info = g_file_query_info (file, ATTRIBUTES, G_FILE_QUERY_INFO_NONE, NULL, NULL);
if (info == NULL)
return FALSE;
retval = add_single_file_from_info (bg_source, file, info, ret_row_ref);
return retval;
}
gboolean
bg_pictures_source_remove (BgPicturesSource *bg_source,
const char *uri)
{
GtkTreeModel *model;
GtkTreeIter iter;
gboolean cont;
gboolean retval;
retval = FALSE;
model = GTK_TREE_MODEL (bg_source_get_liststore (BG_SOURCE (bg_source)));
cont = gtk_tree_model_get_iter_first (model, &iter);
while (cont)
{
g_autoptr(CcBackgroundItem) tmp_item = NULL;
const char *tmp_uri;
gtk_tree_model_get (model, &iter, 1, &tmp_item, -1);
tmp_uri = cc_background_item_get_uri (tmp_item);
if (g_str_equal (tmp_uri, uri))
{
char *uuid;
uuid = bg_pictures_source_get_unique_filename (uri);
g_hash_table_insert (bg_source->known_items,
uuid, NULL);
gtk_list_store_remove (GTK_LIST_STORE (model), &iter);
retval = TRUE;
break;
}
cont = gtk_tree_model_iter_next (model, &iter);
}
return retval;
}
static int
file_sort_func (gconstpointer a,
gconstpointer b)
{
GFileInfo *file_a = G_FILE_INFO (a);
GFileInfo *file_b = G_FILE_INFO (b);
guint64 modified_a, modified_b;
modified_a = g_file_info_get_attribute_uint64 (file_a, G_FILE_ATTRIBUTE_TIME_MODIFIED);
modified_b = g_file_info_get_attribute_uint64 (file_b, G_FILE_ATTRIBUTE_TIME_MODIFIED);
return modified_b - modified_a;
}
static void
file_info_async_ready (GObject *source,
GAsyncResult *res,
gpointer user_data)
{
BgPicturesSource *bg_source;
GList *files, *l;
g_autoptr(GError) err = NULL;
GFile *parent;
files = g_file_enumerator_next_files_finish (G_FILE_ENUMERATOR (source),
res,
&err);
if (err)
{
if (!g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_warning ("Could not get pictures file information: %s", err->message);
g_list_foreach (files, (GFunc) g_object_unref, NULL);
g_list_free (files);
return;
}
bg_source = BG_PICTURES_SOURCE (user_data);
parent = g_file_enumerator_get_container (G_FILE_ENUMERATOR (source));
files = g_list_sort (files, file_sort_func);
/* iterate over the available files */
for (l = files; l; l = g_list_next (l))
{
GFileInfo *info = l->data;
g_autoptr(GFile) file = NULL;
file = g_file_get_child (parent, g_file_info_get_name (info));
add_single_file_from_info (bg_source, file, info, NULL);
}
g_list_foreach (files, (GFunc) g_object_unref, NULL);
g_list_free (files);
}
static void
dir_enum_async_ready (GObject *s,
GAsyncResult *res,
gpointer user_data)
{
BgPicturesSource *source = (BgPicturesSource *) user_data;
g_autoptr(GFileEnumerator) enumerator = NULL;
g_autoptr(GError) err = NULL;
enumerator = g_file_enumerate_children_finish (G_FILE (s), res, &err);
if (err)
{
if (!g_error_matches (err, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_warning ("Could not fill pictures source: %s", err->message);
return;
}
/* get the files */
g_file_enumerator_next_files_async (enumerator,
G_MAXINT,
G_PRIORITY_LOW,
source->cancellable,
file_info_async_ready,
user_data);
}
char *
bg_pictures_source_get_cache_path (void)
{
return g_build_filename (g_get_user_cache_dir (),
"gnome-control-center",
"backgrounds",
NULL);
}
static char *
bg_pictures_source_get_unique_filename (const char *uri)
{
g_autoptr(GChecksum) csum = NULL;
char *ret;
csum = g_checksum_new (G_CHECKSUM_SHA256);
g_checksum_update (csum, (guchar *) uri, -1);
ret = g_strdup (g_checksum_get_string (csum));
return ret;
}
char *
bg_pictures_source_get_unique_path (const char *uri)
{
g_autoptr(GFile) parent = NULL;
g_autoptr(GFile) file = NULL;
g_autofree gchar *cache_path = NULL;
g_autofree gchar *filename = NULL;
cache_path = bg_pictures_source_get_cache_path ();
parent = g_file_new_for_path (cache_path);
filename = bg_pictures_source_get_unique_filename (uri);
file = g_file_get_child (parent, filename);
return g_file_get_path (file);
}
gboolean
bg_pictures_source_is_known (BgPicturesSource *bg_source,
const char *uri)
{
g_autofree gchar *uuid = NULL;
uuid = bg_pictures_source_get_unique_filename (uri);
return GPOINTER_TO_INT (g_hash_table_lookup (bg_source->known_items, uuid));
}
static int
sort_func (GtkTreeModel *model,
GtkTreeIter *a,
GtkTreeIter *b,
BgPicturesSource *bg_source)
{
g_autoptr(CcBackgroundItem) item_a = NULL;
g_autoptr(CcBackgroundItem) item_b = NULL;
guint64 modified_a;
guint64 modified_b;
int retval;
gtk_tree_model_get (model, a,
1, &item_a,
-1);
gtk_tree_model_get (model, b,
1, &item_b,
-1);
modified_a = cc_background_item_get_modified (item_a);
modified_b = cc_background_item_get_modified (item_b);
retval = modified_b - modified_a;
return retval;
}
static void
file_info_ready (GObject *object,
GAsyncResult *res,
gpointer user_data)
{
GFileInfo *info;
GError *error = NULL;
GFile *file = G_FILE (object);
info = g_file_query_info_finish (file, res, &error);
if (!info)
{
if (!g_error_matches (error, G_IO_ERROR, G_IO_ERROR_CANCELLED))
g_warning ("Problem looking up file info: %s", error->message);
g_clear_error (&error);
return;
}
add_single_file_from_info (BG_PICTURES_SOURCE (user_data), file, info, NULL);
}
static void
file_added (GFile *file,
BgPicturesSource *self)
{
g_autofree gchar *uri = NULL;
uri = g_file_get_uri (file);
if (!bg_pictures_source_is_known (self, uri))
{
g_file_query_info_async (file,
ATTRIBUTES,
G_FILE_QUERY_INFO_NONE,
G_PRIORITY_LOW,
NULL,
file_info_ready,
self);
}
}
static void
files_changed_cb (GFileMonitor *monitor,
GFile *file,
GFile *other_file,
GFileMonitorEvent event_type,
gpointer user_data)
{
BgPicturesSource *self = BG_PICTURES_SOURCE (user_data);
g_autofree gchar *uri = NULL;
switch (event_type)
{
case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT:
file_added (file, self);
break;
case G_FILE_MONITOR_EVENT_DELETED:
uri = g_file_get_uri (file);
bg_pictures_source_remove (self, uri);
break;
default:
return;
}
}
static GFileMonitor *
monitor_path (BgPicturesSource *self,
const char *path)
{
GFileMonitor *monitor;
g_autoptr(GFile) dir = NULL;
g_mkdir_with_parents (path, USER_DIR_MODE);
dir = g_file_new_for_path (path);
g_file_enumerate_children_async (dir,
ATTRIBUTES,
G_FILE_QUERY_INFO_NONE,
G_PRIORITY_LOW, self->cancellable,
dir_enum_async_ready, self);
monitor = g_file_monitor_directory (dir,
G_FILE_MONITOR_NONE,
self->cancellable,
NULL);
if (monitor)
g_signal_connect (monitor,
"changed",
G_CALLBACK (files_changed_cb),
self);
return monitor;
}
static void
media_found_cb (BgPicturesSource *self, GrlMedia *media)
{
g_autoptr(GFile) file = NULL;
const gchar *uri;
uri = grl_media_get_url (media);
file = g_file_new_for_uri (uri);
g_object_set_data_full (G_OBJECT (file), "grl-media", g_object_ref (media), g_object_unref);
add_single_file_from_media (self, file, media);
}
static void
bg_pictures_source_init (BgPicturesSource *self)
{
const gchar *pictures_path;
g_autofree gchar *cache_path = NULL;
GtkListStore *store;
self->cancellable = g_cancellable_new ();
self->known_items = g_hash_table_new_full (g_str_hash,
g_str_equal,
(GDestroyNotify) g_free,
NULL);
pictures_path = g_get_user_special_dir (G_USER_DIRECTORY_PICTURES);
if (pictures_path == NULL)
pictures_path = g_get_home_dir ();
self->picture_dir_monitor = monitor_path (self, pictures_path);
cache_path = bg_pictures_source_get_cache_path ();
self->cache_dir_monitor = monitor_path (self, cache_path);
self->grl_miner = cc_background_grilo_miner_new ();
g_signal_connect_swapped (self->grl_miner, "media-found", G_CALLBACK (media_found_cb), self);
cc_background_grilo_miner_start (self->grl_miner);
self->thumb_factory =
gnome_desktop_thumbnail_factory_new (GNOME_DESKTOP_THUMBNAIL_SIZE_LARGE);
store = bg_source_get_liststore (BG_SOURCE (self));
gtk_tree_sortable_set_sort_func (GTK_TREE_SORTABLE (store),
1,
(GtkTreeIterCompareFunc)sort_func,
self,
NULL);
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store),
1,
GTK_SORT_ASCENDING);
}
BgPicturesSource *
bg_pictures_source_new (GtkWindow *window)
{
return g_object_new (BG_TYPE_PICTURES_SOURCE, "window", window, NULL);
}
const char * const *
bg_pictures_get_support_content_types (void)
{
return content_types;
}
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