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gimp/app/core/gimpdatafactory.c

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/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* gimpdatafactory.c
* Copyright (C) 2001 Michael Natterer <mitch@gimp.org>
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "config.h"
#include <glib-object.h>
#include "core-types.h"
#include "gimpcontext.h"
#include "gimpdata.h"
#include "gimpdatafactory.h"
#include "gimpdatafiles.h"
#include "gimpdatalist.h"
#include "libgimp/gimpintl.h"
static void gimp_data_factory_class_init (GimpDataFactoryClass *klass);
static void gimp_data_factory_init (GimpDataFactory *factory);
static void gimp_data_factory_finalize (GObject *object);
static gsize gimp_data_factory_get_memsize (GimpObject *object);
static void gimp_data_factory_data_load_callback (const gchar *filename,
gpointer callback_data);
static GimpObjectClass *parent_class = NULL;
GType
gimp_data_factory_get_type (void)
{
static GType factory_type = 0;
if (! factory_type)
{
static const GTypeInfo factory_info =
{
sizeof (GimpDataFactoryClass),
(GBaseInitFunc) NULL,
(GBaseFinalizeFunc) NULL,
(GClassInitFunc) gimp_data_factory_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
sizeof (GimpDataFactory),
0, /* n_preallocs */
(GInstanceInitFunc) gimp_data_factory_init,
};
factory_type = g_type_register_static (GIMP_TYPE_OBJECT,
"GimpDataFactory",
&factory_info, 0);
}
return factory_type;
}
static void
gimp_data_factory_class_init (GimpDataFactoryClass *klass)
{
GObjectClass *object_class;
GimpObjectClass *gimp_object_class;
object_class = G_OBJECT_CLASS (klass);
gimp_object_class = GIMP_OBJECT_CLASS (klass);
parent_class = g_type_class_peek_parent (klass);
object_class->finalize = gimp_data_factory_finalize;
gimp_object_class->get_memsize = gimp_data_factory_get_memsize;
}
static void
gimp_data_factory_init (GimpDataFactory *factory)
{
factory->container = NULL;
factory->data_path = NULL;
factory->loader_entries = NULL;
factory->n_loader_entries = 0;
factory->data_new_func = NULL;
factory->data_get_standard_func = NULL;
}
static void
gimp_data_factory_finalize (GObject *object)
{
GimpDataFactory *factory;
factory = GIMP_DATA_FACTORY (object);
if (factory->container)
{
g_object_unref (G_OBJECT (factory->container));
factory->container = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (object);
}
static gsize
gimp_data_factory_get_memsize (GimpObject *object)
{
GimpDataFactory *factory;
gsize memsize = 0;
factory = GIMP_DATA_FACTORY (object);
memsize += gimp_object_get_memsize (GIMP_OBJECT (factory->container));
return memsize + GIMP_OBJECT_CLASS (parent_class)->get_memsize (object);
}
GimpDataFactory *
gimp_data_factory_new (GType data_type,
const gchar **data_path,
const GimpDataFactoryLoaderEntry *loader_entries,
gint n_loader_entries,
GimpDataNewFunc new_func,
GimpDataGetStandardFunc standard_func)
{
GimpDataFactory *factory;
g_return_val_if_fail (g_type_is_a (data_type, GIMP_TYPE_DATA), NULL);
g_return_val_if_fail (data_path != NULL, NULL);
g_return_val_if_fail (loader_entries != NULL, NULL);
g_return_val_if_fail (n_loader_entries > 0, NULL);
factory = g_object_new (GIMP_TYPE_DATA_FACTORY, NULL);
factory->container = gimp_data_list_new (data_type);
factory->data_path = data_path;
factory->loader_entries = loader_entries;
factory->n_loader_entries = n_loader_entries;
factory->data_new_func = new_func;
factory->data_get_standard_func = standard_func;
return factory;
}
void
gimp_data_factory_data_init (GimpDataFactory *factory,
gboolean no_data /* FIXME */)
{
g_return_if_fail (GIMP_IS_DATA_FACTORY (factory));
gimp_container_freeze (factory->container);
if (gimp_container_num_children (factory->container) > 0)
gimp_data_factory_data_free (factory);
if (factory->data_path && *factory->data_path)
{
gimp_datafiles_read_directories (*factory->data_path, 0,
gimp_data_factory_data_load_callback,
factory);
}
gimp_container_thaw (factory->container);
}
void
gimp_data_factory_data_save (GimpDataFactory *factory)
{
GimpList *gimp_list;
GList *list;
g_return_if_fail (GIMP_IS_DATA_FACTORY (factory));
if (gimp_container_num_children (factory->container) == 0)
return;
if (! (factory->data_path && *factory->data_path))
return;
gimp_list = GIMP_LIST (factory->container);
gimp_container_freeze (factory->container);
for (list = gimp_list->list; list; list = g_list_next (list))
{
GimpData *data;
data = GIMP_DATA (list->data);
if (! data->filename)
gimp_data_create_filename (data,
GIMP_OBJECT (data)->name,
*factory->data_path);
if (data->dirty)
gimp_data_save (data);
}
gimp_container_thaw (factory->container);
}
void
gimp_data_factory_data_free (GimpDataFactory *factory)
{
GimpList *list;
g_return_if_fail (GIMP_IS_DATA_FACTORY (factory));
if (gimp_container_num_children (factory->container) == 0)
return;
list = GIMP_LIST (factory->container);
gimp_container_freeze (factory->container);
while (list->list)
{
gimp_container_remove (factory->container,
GIMP_OBJECT (list->list->data));
}
gimp_container_thaw (factory->container);
}
GimpData *
gimp_data_factory_data_new (GimpDataFactory *factory,
const gchar *name)
{
g_return_val_if_fail (GIMP_IS_DATA_FACTORY (factory), NULL);
g_return_val_if_fail (name != NULL, NULL);
if (factory->data_new_func)
{
GimpData *data;
data = factory->data_new_func (name);
gimp_container_add (factory->container, GIMP_OBJECT (data));
g_object_unref (G_OBJECT (data));
return data;
}
return NULL;
}
GimpData *
gimp_data_factory_data_get_standard (GimpDataFactory *factory)
{
g_return_val_if_fail (GIMP_IS_DATA_FACTORY (factory), NULL);
if (factory->data_get_standard_func)
return factory->data_get_standard_func ();
return NULL;
}
static void
gimp_data_factory_data_load_callback (const gchar *filename,
gpointer callback_data)
{
GimpDataFactory *factory;
gint i;
factory = (GimpDataFactory *) callback_data;
for (i = 0; i < factory->n_loader_entries; i++)
{
if (factory->loader_entries[i].extension)
{
if (gimp_datafiles_check_extension (filename,
factory->loader_entries[i].extension))
{
goto insert;
}
}
else
{
g_message (_("Trying legacy loader on\n"
"file '%s'\n"
"with unknown extension."),
filename);
goto insert;
}
}
return;
insert:
{
GimpData *data;
data = (GimpData *) (* factory->loader_entries[i].load_func) (filename);
if (! data)
{
g_message (_("Warning: Failed to load data from\n'%s'"), filename);
}
else
{
gimp_container_add (factory->container, GIMP_OBJECT (data));
g_object_unref (G_OBJECT (data));
}
}
}
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