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glib/gio/gemblemedicon.c

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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* 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 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
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Matthias Clasen <mclasen@redhat.com>
* Clemens N. Buss <cebuzz@gmail.com>
*/
#include <config.h>
#include <string.h>
#include "gemblemedicon.h"
#include "glibintl.h"
#include "gioerror.h"
/**
* SECTION:gemblemedicon
* @short_description: Icon with emblems
* @include: gio/gio.h
* @see_also: #GIcon, #GLoadableIcon, #GThemedIcon, #GEmblem
*
* #GEmblemedIcon is an implementation of #GIcon that supports
* adding an emblem to an icon. Adding multiple emblems to an
* icon is ensured via g_emblemed_icon_add_emblem().
*
* Note that #GEmblemedIcon allows no control over the position
* of the emblems. See also #GEmblem for more information.
**/
enum {
PROP_GICON = 1,
NUM_PROPERTIES
};
struct _GEmblemedIconPrivate {
GIcon *icon;
GList *emblems;
};
static GParamSpec *properties[NUM_PROPERTIES] = { NULL, };
static void g_emblemed_icon_icon_iface_init (GIconIface *iface);
G_DEFINE_TYPE_WITH_CODE (GEmblemedIcon, g_emblemed_icon, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_ICON,
g_emblemed_icon_icon_iface_init))
static void
g_emblemed_icon_finalize (GObject *object)
{
GEmblemedIcon *emblemed;
emblemed = G_EMBLEMED_ICON (object);
g_object_unref (emblemed->priv->icon);
g_list_foreach (emblemed->priv->emblems, (GFunc) g_object_unref, NULL);
g_list_free (emblemed->priv->emblems);
(*G_OBJECT_CLASS (g_emblemed_icon_parent_class)->finalize) (object);
}
static void
g_emblemed_icon_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
GEmblemedIcon *self = G_EMBLEMED_ICON (object);
switch (property_id)
{
case PROP_GICON:
self->priv->icon = g_value_dup_object (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
g_emblemed_icon_get_property (GObject *object,
guint property_id,
GValue *value,
GParamSpec *pspec)
{
GEmblemedIcon *self = G_EMBLEMED_ICON (object);
switch (property_id)
{
case PROP_GICON:
g_value_set_object (value, self->priv->icon);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static void
g_emblemed_icon_class_init (GEmblemedIconClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
gobject_class->finalize = g_emblemed_icon_finalize;
gobject_class->set_property = g_emblemed_icon_set_property;
gobject_class->get_property = g_emblemed_icon_get_property;
properties[PROP_GICON] =
g_param_spec_object ("gicon",
P_("The base GIcon"),
P_("The GIcon to attach emblems to"),
G_TYPE_ICON,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (gobject_class, NUM_PROPERTIES, properties);
g_type_class_add_private (klass, sizeof (GEmblemedIconPrivate));
}
static void
g_emblemed_icon_init (GEmblemedIcon *emblemed)
{
emblemed->priv =
G_TYPE_INSTANCE_GET_PRIVATE (emblemed, G_TYPE_EMBLEMED_ICON,
GEmblemedIconPrivate);
}
/**
* g_emblemed_icon_new:
* @icon: a #GIcon
* @emblem: (allow-none): a #GEmblem, or %NULL
*
* Creates a new emblemed icon for @icon with the emblem @emblem.
*
* Returns: (transfer full): a new #GIcon
*
* Since: 2.18
**/
GIcon *
g_emblemed_icon_new (GIcon *icon,
GEmblem *emblem)
{
GEmblemedIcon *emblemed;
g_return_val_if_fail (G_IS_ICON (icon), NULL);
g_return_val_if_fail (!G_IS_EMBLEM (icon), NULL);
emblemed = G_EMBLEMED_ICON (g_object_new (G_TYPE_EMBLEMED_ICON,
"gicon", icon,
NULL));
if (emblem != NULL)
g_emblemed_icon_add_emblem (emblemed, emblem);
return G_ICON (emblemed);
}
/**
* g_emblemed_icon_get_icon:
* @emblemed: a #GEmblemedIcon
*
* Gets the main icon for @emblemed.
*
* Returns: (transfer none): a #GIcon that is owned by @emblemed
*
* Since: 2.18
**/
GIcon *
g_emblemed_icon_get_icon (GEmblemedIcon *emblemed)
{
g_return_val_if_fail (G_IS_EMBLEMED_ICON (emblemed), NULL);
return emblemed->priv->icon;
}
/**
* g_emblemed_icon_get_emblems:
* @emblemed: a #GEmblemedIcon
*
* Gets the list of emblems for the @icon.
*
* Returns: (element-type Gio.Emblem) (transfer none): a #GList of
* #GEmblem <!-- -->s that is owned by @emblemed
*
* Since: 2.18
**/
GList *
g_emblemed_icon_get_emblems (GEmblemedIcon *emblemed)
{
g_return_val_if_fail (G_IS_EMBLEMED_ICON (emblemed), NULL);
return emblemed->priv->emblems;
}
/**
* g_emblemed_icon_clear_emblems:
* @emblemed: a #GEmblemedIcon
*
* Removes all the emblems from @icon.
*
* Since: 2.28
**/
void
g_emblemed_icon_clear_emblems (GEmblemedIcon *emblemed)
{
g_return_if_fail (G_IS_EMBLEMED_ICON (emblemed));
if (emblemed->priv->emblems == NULL)
return;
g_list_free_full (emblemed->priv->emblems, g_object_unref);
emblemed->priv->emblems = NULL;
}
static gint
g_emblem_comp (GEmblem *a,
GEmblem *b)
{
guint hash_a = g_icon_hash (G_ICON (a));
guint hash_b = g_icon_hash (G_ICON (b));
if(hash_a < hash_b)
return -1;
if(hash_a == hash_b)
return 0;
return 1;
}
/**
* g_emblemed_icon_add_emblem:
* @emblemed: a #GEmblemedIcon
* @emblem: a #GEmblem
*
* Adds @emblem to the #GList of #GEmblem <!-- -->s.
*
* Since: 2.18
**/
void
g_emblemed_icon_add_emblem (GEmblemedIcon *emblemed,
GEmblem *emblem)
{
g_return_if_fail (G_IS_EMBLEMED_ICON (emblemed));
g_return_if_fail (G_IS_EMBLEM (emblem));
g_object_ref (emblem);
emblemed->priv->emblems = g_list_insert_sorted (emblemed->priv->emblems, emblem,
(GCompareFunc) g_emblem_comp);
}
static guint
g_emblemed_icon_hash (GIcon *icon)
{
GEmblemedIcon *emblemed = G_EMBLEMED_ICON (icon);
GList *list;
guint hash = g_icon_hash (emblemed->priv->icon);
for (list = emblemed->priv->emblems; list != NULL; list = list->next)
hash ^= g_icon_hash (G_ICON (list->data));
return hash;
}
static gboolean
g_emblemed_icon_equal (GIcon *icon1,
GIcon *icon2)
{
GEmblemedIcon *emblemed1 = G_EMBLEMED_ICON (icon1);
GEmblemedIcon *emblemed2 = G_EMBLEMED_ICON (icon2);
GList *list1, *list2;
if (!g_icon_equal (emblemed1->priv->icon, emblemed2->priv->icon))
return FALSE;
list1 = emblemed1->priv->emblems;
list2 = emblemed2->priv->emblems;
while (list1 && list2)
{
if (!g_icon_equal (G_ICON (list1->data), G_ICON (list2->data)))
return FALSE;
list1 = list1->next;
list2 = list2->next;
}
return list1 == NULL && list2 == NULL;
}
static gboolean
g_emblemed_icon_to_tokens (GIcon *icon,
GPtrArray *tokens,
gint *out_version)
{
GEmblemedIcon *emblemed_icon = G_EMBLEMED_ICON (icon);
GList *l;
char *s;
/* GEmblemedIcons are encoded as
*
* <encoded_icon> [<encoded_emblem_icon>]*
*/
g_return_val_if_fail (out_version != NULL, FALSE);
*out_version = 0;
s = g_icon_to_string (emblemed_icon->priv->icon);
if (s == NULL)
return FALSE;
g_ptr_array_add (tokens, s);
for (l = emblemed_icon->priv->emblems; l != NULL; l = l->next)
{
GIcon *emblem_icon = G_ICON (l->data);
s = g_icon_to_string (emblem_icon);
if (s == NULL)
return FALSE;
g_ptr_array_add (tokens, s);
}
return TRUE;
}
static GIcon *
g_emblemed_icon_from_tokens (gchar **tokens,
gint num_tokens,
gint version,
GError **error)
{
GEmblemedIcon *emblemed_icon;
int n;
emblemed_icon = NULL;
if (version != 0)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_INVALID_ARGUMENT,
_("Can't handle version %d of GEmblemedIcon encoding"),
version);
goto fail;
}
if (num_tokens < 1)
{
g_set_error (error,
G_IO_ERROR,
G_IO_ERROR_INVALID_ARGUMENT,
_("Malformed number of tokens (%d) in GEmblemedIcon encoding"),
num_tokens);
goto fail;
}
emblemed_icon = g_object_new (G_TYPE_EMBLEMED_ICON, NULL);
emblemed_icon->priv->icon = g_icon_new_for_string (tokens[0], error);
if (emblemed_icon->priv->icon == NULL)
goto fail;
for (n = 1; n < num_tokens; n++)
{
GIcon *emblem;
emblem = g_icon_new_for_string (tokens[n], error);
if (emblem == NULL)
goto fail;
if (!G_IS_EMBLEM (emblem))
{
g_set_error_literal (error,
G_IO_ERROR,
G_IO_ERROR_INVALID_ARGUMENT,
_("Expected a GEmblem for GEmblemedIcon"));
g_object_unref (emblem);
goto fail;
}
emblemed_icon->priv->emblems = g_list_append (emblemed_icon->priv->emblems, emblem);
}
return G_ICON (emblemed_icon);
fail:
if (emblemed_icon != NULL)
g_object_unref (emblemed_icon);
return NULL;
}
static void
g_emblemed_icon_icon_iface_init (GIconIface *iface)
{
iface->hash = g_emblemed_icon_hash;
iface->equal = g_emblemed_icon_equal;
iface->to_tokens = g_emblemed_icon_to_tokens;
iface->from_tokens = g_emblemed_icon_from_tokens;
}
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