Import Upstream version 2.72.4
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379
gio/gemblem.c
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379
gio/gemblem.c
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/* GIO - GLib Input, Output and Streaming Library
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*
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* Copyright (C) 2008 Clemens N. Buss <cebuzz@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* 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/>.
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*/
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#include <config.h>
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#include "gicon.h"
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#include "gemblem.h"
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#include "glibintl.h"
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#include "gioenums.h"
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#include "gioenumtypes.h"
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#include "gioerror.h"
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#include <stdlib.h>
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#include <string.h>
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/**
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* SECTION:gemblem
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* @short_description: An object for emblems
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* @include: gio/gio.h
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* @see_also: #GIcon, #GEmblemedIcon, #GLoadableIcon, #GThemedIcon
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*
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* #GEmblem is an implementation of #GIcon that supports
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* having an emblem, which is an icon with additional properties.
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* It can than be added to a #GEmblemedIcon.
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*
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* Currently, only metainformation about the emblem's origin is
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* supported. More may be added in the future.
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*/
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static void g_emblem_iface_init (GIconIface *iface);
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struct _GEmblem
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{
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GObject parent_instance;
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GIcon *icon;
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GEmblemOrigin origin;
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};
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struct _GEmblemClass
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{
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GObjectClass parent_class;
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};
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enum
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{
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PROP_0_GEMBLEM,
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PROP_ICON,
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PROP_ORIGIN
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};
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G_DEFINE_TYPE_WITH_CODE (GEmblem, g_emblem, G_TYPE_OBJECT,
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G_IMPLEMENT_INTERFACE (G_TYPE_ICON, g_emblem_iface_init))
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static void
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g_emblem_get_property (GObject *object,
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guint prop_id,
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GValue *value,
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GParamSpec *pspec)
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{
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GEmblem *emblem = G_EMBLEM (object);
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switch (prop_id)
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{
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case PROP_ICON:
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g_value_set_object (value, emblem->icon);
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break;
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case PROP_ORIGIN:
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g_value_set_enum (value, emblem->origin);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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g_emblem_set_property (GObject *object,
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guint prop_id,
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const GValue *value,
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GParamSpec *pspec)
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{
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GEmblem *emblem = G_EMBLEM (object);
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switch (prop_id)
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{
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case PROP_ICON:
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emblem->icon = g_value_dup_object (value);
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break;
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case PROP_ORIGIN:
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emblem->origin = g_value_get_enum (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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g_emblem_finalize (GObject *object)
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{
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GEmblem *emblem = G_EMBLEM (object);
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if (emblem->icon)
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g_object_unref (emblem->icon);
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(*G_OBJECT_CLASS (g_emblem_parent_class)->finalize) (object);
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}
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static void
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g_emblem_class_init (GEmblemClass *klass)
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{
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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gobject_class->finalize = g_emblem_finalize;
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gobject_class->set_property = g_emblem_set_property;
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gobject_class->get_property = g_emblem_get_property;
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g_object_class_install_property (gobject_class,
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PROP_ORIGIN,
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g_param_spec_enum ("origin",
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P_("GEmblem’s origin"),
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P_("Tells which origin the emblem is derived from"),
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G_TYPE_EMBLEM_ORIGIN,
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G_EMBLEM_ORIGIN_UNKNOWN,
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G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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g_object_class_install_property (gobject_class,
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PROP_ICON,
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g_param_spec_object ("icon",
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P_("The icon of the emblem"),
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P_("The actual icon of the emblem"),
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G_TYPE_OBJECT,
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G_PARAM_CONSTRUCT_ONLY | G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
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}
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static void
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g_emblem_init (GEmblem *emblem)
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{
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}
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/**
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* g_emblem_new:
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* @icon: a GIcon containing the icon.
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*
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* Creates a new emblem for @icon.
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*
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* Returns: a new #GEmblem.
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*
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* Since: 2.18
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*/
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GEmblem *
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g_emblem_new (GIcon *icon)
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{
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GEmblem* emblem;
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g_return_val_if_fail (icon != NULL, NULL);
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g_return_val_if_fail (G_IS_ICON (icon), NULL);
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g_return_val_if_fail (!G_IS_EMBLEM (icon), NULL);
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emblem = g_object_new (G_TYPE_EMBLEM, NULL);
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emblem->icon = g_object_ref (icon);
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emblem->origin = G_EMBLEM_ORIGIN_UNKNOWN;
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return emblem;
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}
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/**
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* g_emblem_new_with_origin:
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* @icon: a GIcon containing the icon.
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* @origin: a GEmblemOrigin enum defining the emblem's origin
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*
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* Creates a new emblem for @icon.
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*
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* Returns: a new #GEmblem.
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*
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* Since: 2.18
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*/
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GEmblem *
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g_emblem_new_with_origin (GIcon *icon,
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GEmblemOrigin origin)
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{
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GEmblem* emblem;
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g_return_val_if_fail (icon != NULL, NULL);
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g_return_val_if_fail (G_IS_ICON (icon), NULL);
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g_return_val_if_fail (!G_IS_EMBLEM (icon), NULL);
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emblem = g_object_new (G_TYPE_EMBLEM, NULL);
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emblem->icon = g_object_ref (icon);
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emblem->origin = origin;
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return emblem;
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}
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/**
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* g_emblem_get_icon:
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* @emblem: a #GEmblem from which the icon should be extracted.
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*
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* Gives back the icon from @emblem.
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*
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* Returns: (transfer none): a #GIcon. The returned object belongs to
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* the emblem and should not be modified or freed.
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*
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* Since: 2.18
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*/
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GIcon *
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g_emblem_get_icon (GEmblem *emblem)
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{
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g_return_val_if_fail (G_IS_EMBLEM (emblem), NULL);
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return emblem->icon;
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}
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/**
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* g_emblem_get_origin:
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* @emblem: a #GEmblem
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*
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* Gets the origin of the emblem.
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*
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* Returns: (transfer none): the origin of the emblem
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*
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* Since: 2.18
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*/
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GEmblemOrigin
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g_emblem_get_origin (GEmblem *emblem)
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{
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g_return_val_if_fail (G_IS_EMBLEM (emblem), G_EMBLEM_ORIGIN_UNKNOWN);
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return emblem->origin;
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}
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static guint
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g_emblem_hash (GIcon *icon)
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{
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GEmblem *emblem = G_EMBLEM (icon);
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guint hash;
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hash = g_icon_hash (g_emblem_get_icon (emblem));
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hash ^= emblem->origin;
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return hash;
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}
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static gboolean
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g_emblem_equal (GIcon *icon1,
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GIcon *icon2)
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{
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GEmblem *emblem1 = G_EMBLEM (icon1);
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GEmblem *emblem2 = G_EMBLEM (icon2);
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return emblem1->origin == emblem2->origin &&
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g_icon_equal (emblem1->icon, emblem2->icon);
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}
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static gboolean
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g_emblem_to_tokens (GIcon *icon,
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GPtrArray *tokens,
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gint *out_version)
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{
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GEmblem *emblem = G_EMBLEM (icon);
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char *s;
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/* GEmblem are encoded as
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*
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* <origin> <icon>
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*/
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g_return_val_if_fail (out_version != NULL, FALSE);
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*out_version = 0;
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s = g_icon_to_string (emblem->icon);
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if (s == NULL)
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return FALSE;
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g_ptr_array_add (tokens, s);
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s = g_strdup_printf ("%d", emblem->origin);
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g_ptr_array_add (tokens, s);
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return TRUE;
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}
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static GIcon *
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g_emblem_from_tokens (gchar **tokens,
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gint num_tokens,
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gint version,
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GError **error)
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{
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GEmblem *emblem;
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GIcon *icon;
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GEmblemOrigin origin;
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emblem = NULL;
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if (version != 0)
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{
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g_set_error (error,
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G_IO_ERROR,
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G_IO_ERROR_INVALID_ARGUMENT,
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_("Can’t handle version %d of GEmblem encoding"),
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version);
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return NULL;
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}
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if (num_tokens != 2)
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{
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g_set_error (error,
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G_IO_ERROR,
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G_IO_ERROR_INVALID_ARGUMENT,
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_("Malformed number of tokens (%d) in GEmblem encoding"),
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num_tokens);
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return NULL;
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}
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icon = g_icon_new_for_string (tokens[0], error);
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if (icon == NULL)
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return NULL;
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origin = atoi (tokens[1]);
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emblem = g_emblem_new_with_origin (icon, origin);
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g_object_unref (icon);
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return G_ICON (emblem);
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}
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static GVariant *
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g_emblem_serialize (GIcon *icon)
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{
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GEmblem *emblem = G_EMBLEM (icon);
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GVariant *icon_data;
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GEnumValue *origin;
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GVariant *result;
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icon_data = g_icon_serialize (emblem->icon);
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if (!icon_data)
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return NULL;
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origin = g_enum_get_value (g_type_class_peek (G_TYPE_EMBLEM_ORIGIN), emblem->origin);
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result = g_variant_new_parsed ("('emblem', <(%v, {'origin': <%s>})>)",
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icon_data, origin ? origin->value_nick : "unknown");
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g_variant_unref (icon_data);
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return result;
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}
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static void
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g_emblem_iface_init (GIconIface *iface)
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{
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iface->hash = g_emblem_hash;
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iface->equal = g_emblem_equal;
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iface->to_tokens = g_emblem_to_tokens;
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iface->from_tokens = g_emblem_from_tokens;
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iface->serialize = g_emblem_serialize;
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}
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