gimp/app/gimpdatafactory.c

304 lines
7.5 KiB
C

/* The GIMP -- an image manipulation program
* Copyright (C) 1995 Spencer Kimball and Peter Mattis
*
* 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 <gtk/gtk.h>
#include "libgimpwidgets/gimpwidgets.h"
#include "apptypes.h"
#include "datafiles.h"
#include "gimpdata.h"
#include "gimpdatalist.h"
#include "gimpdatafactory.h"
#include "gimpcontext.h"
#include "gimpmarshal.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_destroy (GtkObject *object);
static void gimp_data_factory_data_load_callback (const gchar *filename,
gpointer callback_data);
static GimpObjectClass *parent_class = NULL;
GtkType
gimp_data_factory_get_type (void)
{
static guint factory_type = 0;
if (! factory_type)
{
GtkTypeInfo factory_info =
{
"GimpDataFactory",
sizeof (GimpDataFactory),
sizeof (GimpDataFactoryClass),
(GtkClassInitFunc) gimp_data_factory_class_init,
(GtkObjectInitFunc) gimp_data_factory_init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL
};
factory_type = gtk_type_unique (GIMP_TYPE_OBJECT, &factory_info);
}
return factory_type;
}
static void
gimp_data_factory_class_init (GimpDataFactoryClass *klass)
{
GtkObjectClass *object_class;
object_class = (GtkObjectClass *) klass;
parent_class = gtk_type_class (GTK_TYPE_VBOX);
object_class->destroy = gimp_data_factory_destroy;
}
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_destroy (GtkObject *object)
{
GimpDataFactory *factory;
factory = GIMP_DATA_FACTORY (object);
if (factory->container)
gtk_object_unref (GTK_OBJECT (factory->container));
if (GTK_OBJECT_CLASS (parent_class)->destroy)
GTK_OBJECT_CLASS (parent_class)->destroy (object);
}
GimpDataFactory *
gimp_data_factory_new (GtkType 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 (gtk_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 = gtk_type_new (GIMP_TYPE_DATA_FACTORY);
factory->container = gimp_data_list_new (data_type);
gtk_object_ref (GTK_OBJECT (factory->container));
gtk_object_sink (GTK_OBJECT (factory->container));
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)
{
g_return_if_fail (factory != NULL);
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)
{
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 (factory != NULL);
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 (factory != NULL);
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);
gimp_data_factory_data_save (factory);
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 (factory != NULL, NULL);
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));
return data;
}
return NULL;
}
GimpData *
gimp_data_factory_data_get_standard (GimpDataFactory *factory)
{
g_return_val_if_fail (factory != NULL, NULL);
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 (datafiles_check_extension (filename,
factory->loader_entries[i].extension))
{
goto insert;
}
}
else
{
g_warning ("%s(): trying legacy loader on file with unknown "
"extension: %s",
G_GNUC_FUNCTION, 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));
}
}