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/* -*- Mode: C; indent-tabs-mode:nil; tab-width:4 -*-
*
* Copyright (C) 2010 Robert Ancell.
* Author: Robert Ancell <robert.ancell@canonical.com>
*
* 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 or version 3 of the License.
* See http://www.gnu.org/copyleft/lgpl.html the full text of the license.
*/
#include <libxklavier/xklavier.h>
#include "lightdm/layout.h"
/**
* SECTION:layout
* @short_description: Control the keyboard layout
* @include: lightdm.h
*
* #LightDMLayout is an object that describes a keyboard that is available on the system.
*/
/**
* LightDMLayout:
*
* #LightDMLayout is an opaque data structure and can only be accessed
* using the provided functions.
*/
/**
* LightDMLayoutClass:
*
* Class structure for #LightDMLayout.
*/
enum {
PROP_NAME = 1,
PROP_SHORT_DESCRIPTION,
PROP_DESCRIPTION
};
typedef struct
{
gchar *name;
gchar *short_description;
gchar *description;
} LightDMLayoutPrivate;
G_DEFINE_TYPE_WITH_PRIVATE (LightDMLayout, lightdm_layout, G_TYPE_OBJECT)
#define GET_PRIVATE(obj) G_TYPE_INSTANCE_GET_PRIVATE ((obj), LIGHTDM_TYPE_LAYOUT, LightDMLayoutPrivate)
static gboolean have_layouts = FALSE;
static Display *display = NULL;
static XklEngine *xkl_engine = NULL;
static XklConfigRec *xkl_config = NULL;
static GList *layouts = NULL;
static LightDMLayout *default_layout = NULL;
static gchar *
make_layout_string (const gchar *layout, const gchar *variant)
{
if (!layout || layout[0] == 0)
return NULL;
else if (!variant || variant[0] == 0)
return g_strdup (layout);
else
return g_strdup_printf ("%s\t%s", layout, variant);
}
static void
parse_layout_string (const gchar *name, gchar **layout, gchar **variant)
{
*layout = NULL;
*variant = NULL;
if (!name)
return;
g_auto(GStrv) split = g_strsplit (name, "\t", 2);
if (split[0])
{
*layout = g_strdup (split[0]);
if (split[1])
*variant = g_strdup (split[1]);
}
}
static void
variant_cb (XklConfigRegistry *config,
const XklConfigItem *item,
gpointer data)
{
g_autofree gchar *full_name = make_layout_string (data, item->name);
LightDMLayout *layout = g_object_new (LIGHTDM_TYPE_LAYOUT, "name", full_name, "short-description", item->short_description, "description", item->description, NULL);
layouts = g_list_append (layouts, layout);
}
static void
layout_cb (XklConfigRegistry *config,
const XklConfigItem *item,
gpointer data)
{
LightDMLayout *layout = g_object_new (LIGHTDM_TYPE_LAYOUT, "name", item->name, "short-description", item->short_description, "description", item->description, NULL);
layouts = g_list_append (layouts, layout);
xkl_config_registry_foreach_layout_variant (config, item->name, variant_cb, (gpointer) item->name);
}
/**
* lightdm_get_layouts:
*
* Get a list of keyboard layouts to present to the user.
*
* Return value: (element-type LightDMLayout) (transfer none): A list of #LightDMLayout that should be presented to the user.
**/
GList *
lightdm_get_layouts (void)
{
if (have_layouts)
return layouts;
display = XOpenDisplay (NULL);
if (display == NULL)
return NULL;
xkl_engine = xkl_engine_get_instance (display);
xkl_config = xkl_config_rec_new ();
if (!xkl_config_rec_get_from_server (xkl_config, xkl_engine))
g_warning ("Failed to get Xkl configuration from server");
XklConfigRegistry *registry = xkl_config_registry_get_instance (xkl_engine);
xkl_config_registry_load (registry, FALSE);
xkl_config_registry_foreach_layout (registry, layout_cb, NULL);
g_object_unref (registry);
have_layouts = TRUE;
return layouts;
}
/**
* lightdm_set_layout:
* @layout: The layout to use
*
* Set the layout for this session.
**/
void
lightdm_set_layout (LightDMLayout *dmlayout)
{
g_return_if_fail (dmlayout != NULL);
g_debug ("Setting keyboard layout to '%s'", lightdm_layout_get_name (dmlayout));
g_autofree gchar *layout = NULL;
g_autofree gchar *variant = NULL;
parse_layout_string (lightdm_layout_get_name (dmlayout), &layout, &variant);
XklConfigRec *config = xkl_config_rec_new ();
config->layouts = g_malloc (sizeof (gchar *) * 2);
config->variants = g_malloc (sizeof (gchar *) * 2);
config->model = g_strdup (xkl_config->model);
config->layouts[0] = g_steal_pointer (&layout);
config->layouts[1] = NULL;
config->variants[0] = g_steal_pointer (&variant);
config->variants[1] = NULL;
if (!xkl_config_rec_activate (config, xkl_engine))
g_warning ("Failed to activate XKL config");
g_object_unref (config);
}
/**
* lightdm_get_layout:
*
* Get the current keyboard layout.
*
* Return value: (transfer none): The currently active layout for this user.
**/
LightDMLayout *
lightdm_get_layout (void)
{
lightdm_get_layouts ();
if (layouts && xkl_config && !default_layout)
{
g_autofree gchar *full_name = make_layout_string (xkl_config->layouts ? xkl_config->layouts[0] : NULL,
xkl_config->variants ? xkl_config->variants[0] : NULL);
for (GList *item = layouts; item; item = item->next)
{
LightDMLayout *iter_layout = (LightDMLayout *) item->data;
if (g_strcmp0 (lightdm_layout_get_name (iter_layout), full_name) == 0)
{
default_layout = iter_layout;
break;
}
}
}
return default_layout;
}
/**
* lightdm_layout_get_name:
* @layout: A #LightDMLayout
*
* Get the name of a layout.
*
* Return value: The name of the layout
**/
const gchar *
lightdm_layout_get_name (LightDMLayout *layout)
{
g_return_val_if_fail (LIGHTDM_IS_LAYOUT (layout), NULL);
return GET_PRIVATE (layout)->name;
}
/**
* lightdm_layout_get_short_description:
* @layout: A #LightDMLayout
*
* Get the short description of a layout.
*
* Return value: A short description of the layout
**/
const gchar *
lightdm_layout_get_short_description (LightDMLayout *layout)
{
g_return_val_if_fail (LIGHTDM_IS_LAYOUT (layout), NULL);
return GET_PRIVATE (layout)->short_description;
}
/**
* lightdm_layout_get_description:
* @layout: A #LightDMLayout
*
* Get the long description of a layout.
*
* Return value: A long description of the layout
**/
const gchar *
lightdm_layout_get_description (LightDMLayout *layout)
{
g_return_val_if_fail (LIGHTDM_IS_LAYOUT (layout), NULL);
return GET_PRIVATE (layout)->description;
}
static void
lightdm_layout_init (LightDMLayout *layout)
{
}
static void
lightdm_layout_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
LightDMLayout *self = LIGHTDM_LAYOUT (object);
LightDMLayoutPrivate *priv = GET_PRIVATE (self);
switch (prop_id) {
case PROP_NAME:
g_free (priv->name);
priv->name = g_strdup (g_value_get_string (value));
break;
case PROP_SHORT_DESCRIPTION:
g_free (priv->short_description);
priv->short_description = g_strdup (g_value_get_string (value));
break;
case PROP_DESCRIPTION:
g_free (priv->description);
priv->description = g_strdup (g_value_get_string (value));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
lightdm_layout_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
LightDMLayout *self = LIGHTDM_LAYOUT (object);
switch (prop_id) {
case PROP_NAME:
g_value_set_string (value, lightdm_layout_get_name (self));
break;
case PROP_SHORT_DESCRIPTION:
g_value_set_string (value, lightdm_layout_get_short_description (self));
break;
case PROP_DESCRIPTION:
g_value_set_string (value, lightdm_layout_get_description (self));
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
lightdm_layout_finalize (GObject *object)
{
LightDMLayout *self = LIGHTDM_LAYOUT (object);
LightDMLayoutPrivate *priv = GET_PRIVATE (self);
g_free (priv->name);
g_free (priv->short_description);
g_free (priv->description);
}
static void
lightdm_layout_class_init (LightDMLayoutClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->set_property = lightdm_layout_set_property;
object_class->get_property = lightdm_layout_get_property;
object_class->finalize = lightdm_layout_finalize;
g_object_class_install_property (object_class,
PROP_NAME,
g_param_spec_string ("name",
"name",
"Name of the layout",
NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_SHORT_DESCRIPTION,
g_param_spec_string ("short-description",
"short-description",
"Short description of the layout",
NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property (object_class,
PROP_DESCRIPTION,
g_param_spec_string ("description",
"description",
"Long description of the layout",
NULL,
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY));
}
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