/* This file is part of GEGL.
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*
* Copyright 2006 Øyvind Kolås <pippin@gimp.org>
*/
#ifndef __GEGL_TILE_HANDLER_CHAIN_H__
#define __GEGL_TILE_HANDLER_CHAIN_H__
#include "gegl-tile-handler.h"
/***
* GeglTileHandlerChain is a GeglTileHandler that easily create and destroy a chain of GeglTileHandler.
*/
#define GEGL_TYPE_TILE_HANDLER_CHAIN (gegl_tile_handler_chain_get_type ())
#define GEGL_TILE_HANDLER_CHAIN(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_TILE_HANDLER_CHAIN, GeglTileHandlerChain))
#define GEGL_TILE_HANDLER_CHAIN_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GEGL_TYPE_TILE_HANDLER_CHAIN, GeglTileHandlerChainClass))
#define GEGL_IS_TILE_HANDLER_CHAIN(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_TILE_HANDLER_CHAIN))
#define GEGL_IS_TILE_HANDLER_CHAIN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GEGL_TYPE_TILE_HANDLER_CHAIN))
#define GEGL_TILE_HANDLER_CHAIN_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GEGL_TYPE_TILE_HANDLER_CHAIN, GeglTileHandlerChainClass))
struct _GeglTileHandlerChain
{
GeglTileHandler parent_instance;
GSList *chain;
};
struct _GeglTileHandlerChainClass
{
GeglTileHandlerClass parent_class;
};
GType gegl_tile_handler_chain_get_type (void) G_GNUC_CONST;
/**
* gegl_tile_handler_chain_add:
* @tile_handler_chain: a #GeglTileHandlerChain
* @handler: a #GeglTileHandler.
*
* Adds @handler to the list of tile_handler_chain to be processed, the order tile_handler_chain
* are added in is from original source to last processing element, commands
* are passed from the last added to the first one in the chain, tiles
* and other results are passed back up
*
* Returns: the added handler.
*/
GeglTileHandler * gegl_tile_handler_chain_add
(GeglTileHandlerChain *tile_handler_chain,
GeglTileHandler *handler);
/* Binds the tile-handlers in the chain together.
*/
void gegl_tile_handler_chain_bind (GeglTileHandlerChain *tile_handler_chain);
/* returns the first matching handler of a specified type (or NULL) */
GeglTileHandler * gegl_tile_handler_chain_get_first
(GeglTileHandlerChain *tile_handler_chain,
GType type);
#endif