glib/gio/gbytesicon.c

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/* GIO - GLib Input, Output and Streaming Library
*
* Copyright © 2013 Canonical Limited
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
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* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
* Author: Ryan Lortie <desrt@desrt.ca>
*/
#include "config.h"
#include "gbytesicon.h"
#include "gbytes.h"
#include "gicon.h"
#include "glibintl.h"
#include "gloadableicon.h"
#include "gmemoryinputstream.h"
#include "gtask.h"
#include "gioerror.h"
/**
* SECTION:gbytesicon
* @short_description: An icon stored in memory as a GBytes
* @include: gio/gio.h
* @see_also: #GIcon, #GLoadableIcon, #GBytes
*
* #GBytesIcon specifies an image held in memory in a common format (usually
* png) to be used as icon.
*
* Since: 2.38
**/
typedef GObjectClass GBytesIconClass;
struct _GBytesIcon
{
GObject parent_instance;
GBytes *bytes;
};
enum
{
PROP_0,
PROP_BYTES
};
static void g_bytes_icon_icon_iface_init (GIconIface *iface);
static void g_bytes_icon_loadable_icon_iface_init (GLoadableIconIface *iface);
G_DEFINE_TYPE_WITH_CODE (GBytesIcon, g_bytes_icon, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_ICON, g_bytes_icon_icon_iface_init)
G_IMPLEMENT_INTERFACE (G_TYPE_LOADABLE_ICON, g_bytes_icon_loadable_icon_iface_init))
static void
g_bytes_icon_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GBytesIcon *icon = G_BYTES_ICON (object);
switch (prop_id)
{
case PROP_BYTES:
g_value_set_boxed (value, icon->bytes);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
g_bytes_icon_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GBytesIcon *icon = G_BYTES_ICON (object);
switch (prop_id)
{
case PROP_BYTES:
icon->bytes = g_value_dup_boxed (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
g_bytes_icon_finalize (GObject *object)
{
GBytesIcon *icon;
icon = G_BYTES_ICON (object);
g_bytes_unref (icon->bytes);
G_OBJECT_CLASS (g_bytes_icon_parent_class)->finalize (object);
}
static void
g_bytes_icon_class_init (GBytesIconClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->get_property = g_bytes_icon_get_property;
gobject_class->set_property = g_bytes_icon_set_property;
gobject_class->finalize = g_bytes_icon_finalize;
/**
* GBytesIcon:bytes:
*
* The bytes containing the icon.
*/
g_object_class_install_property (gobject_class, PROP_BYTES,
g_param_spec_boxed ("bytes",
P_("bytes"),
P_("The bytes containing the icon"),
G_TYPE_BYTES,
G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
g_bytes_icon_init (GBytesIcon *bytes)
{
}
/**
* g_bytes_icon_new:
* @bytes: a #GBytes.
*
* Creates a new icon for a bytes.
*
* Returns: (transfer full) (type GBytesIcon): a #GIcon for the given
* @bytes, or %NULL on error.
*
* Since: 2.38
**/
GIcon *
g_bytes_icon_new (GBytes *bytes)
{
g_return_val_if_fail (bytes != NULL, NULL);
return g_object_new (G_TYPE_BYTES_ICON, "bytes", bytes, NULL);
}
/**
* g_bytes_icon_get_bytes:
* @icon: a #GIcon.
*
* Gets the #GBytes associated with the given @icon.
*
* Returns: (transfer none): a #GBytes, or %NULL.
*
* Since: 2.38
**/
GBytes *
g_bytes_icon_get_bytes (GBytesIcon *icon)
{
g_return_val_if_fail (G_IS_BYTES_ICON (icon), NULL);
return icon->bytes;
}
static guint
g_bytes_icon_hash (GIcon *icon)
{
GBytesIcon *bytes_icon = G_BYTES_ICON (icon);
return g_bytes_hash (bytes_icon->bytes);
}
static gboolean
g_bytes_icon_equal (GIcon *icon1,
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GIcon *icon2)
{
GBytesIcon *bytes1 = G_BYTES_ICON (icon1);
GBytesIcon *bytes2 = G_BYTES_ICON (icon2);
return g_bytes_equal (bytes1->bytes, bytes2->bytes);
}
static GVariant *
g_bytes_icon_serialize (GIcon *icon)
{
GBytesIcon *bytes_icon = G_BYTES_ICON (icon);
return g_variant_new ("(sv)", "bytes",
g_variant_new_from_bytes (G_VARIANT_TYPE_BYTESTRING, bytes_icon->bytes, TRUE));
}
static void
g_bytes_icon_icon_iface_init (GIconIface *iface)
{
iface->hash = g_bytes_icon_hash;
iface->equal = g_bytes_icon_equal;
iface->serialize = g_bytes_icon_serialize;
}
static GInputStream *
g_bytes_icon_load (GLoadableIcon *icon,
int size,
char **type,
GCancellable *cancellable,
GError **error)
{
GBytesIcon *bytes_icon = G_BYTES_ICON (icon);
if (type)
*type = NULL;
return g_memory_input_stream_new_from_bytes (bytes_icon->bytes);
}
static void
g_bytes_icon_load_async (GLoadableIcon *icon,
int size,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GBytesIcon *bytes_icon = G_BYTES_ICON (icon);
GTask *task;
task = g_task_new (icon, cancellable, callback, user_data);
g_task_set_source_tag (task, g_bytes_icon_load_async);
g_task_return_pointer (task, g_memory_input_stream_new_from_bytes (bytes_icon->bytes), g_object_unref);
g_object_unref (task);
}
static GInputStream *
g_bytes_icon_load_finish (GLoadableIcon *icon,
GAsyncResult *res,
char **type,
GError **error)
{
g_return_val_if_fail (g_task_is_valid (res, icon), NULL);
if (type)
*type = NULL;
return g_task_propagate_pointer (G_TASK (res), error);
}
static void
g_bytes_icon_loadable_icon_iface_init (GLoadableIconIface *iface)
{
iface->load = g_bytes_icon_load;
iface->load_async = g_bytes_icon_load_async;
iface->load_finish = g_bytes_icon_load_finish;
}