/* This file is part of GEGL
*
* GEGL 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.
*
* GEGL 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 GEGL; if not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2003 Calvin Williamson
*/
#ifndef __GEGL_EVAL_MGR_H__
#define __GEGL_EVAL_MGR_H__
#include "gegl-types-internal.h"
#include "buffer/gegl-buffer-types.h"
G_BEGIN_DECLS
typedef enum
{
UNINITIALIZED,
/* means we need to redo an extra prepare and have_rect
* traversal
*/
NEED_REDO_PREPARE_AND_HAVE_RECT_TRAVERSAL,
/* means we need a prepare traversal to set up the contexts on the
* nodes
*/
NEED_CONTEXT_SETUP_TRAVERSAL
} GeglEvalMgrStates;
#define GEGL_TYPE_EVAL_MGR (gegl_eval_mgr_get_type ())
#define GEGL_EVAL_MGR(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), GEGL_TYPE_EVAL_MGR, GeglEvalMgr))
#define GEGL_EVAL_MGR_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GEGL_TYPE_EVAL_MGR, GeglEvalMgrClass))
#define GEGL_IS_EVAL_MGR(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GEGL_TYPE_EVAL_MGR))
#define GEGL_IS_EVAL_MGR_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GEGL_TYPE_EVAL_MGR))
#define GEGL_EVAL_MGR_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GEGL_TYPE_EVAL_MGR, GeglEvalMgrClass))
typedef struct _GeglEvalMgrClass GeglEvalMgrClass;
struct _GeglEvalMgr
{
GObject parent_instance;
GeglNode *node;
gchar *pad_name;
GeglRectangle roi;
/* whether we can fire off rendering requests straight
* away or we have to re-prepare etc of the graph
*/
GeglEvalMgrStates state;
/* we keep these objects around, they are too expensive to throw away */
GeglVisitor *prepare_visitor;
GeglVisitor *need_visitor;
GeglVisitor *eval_visitor;
GeglVisitor *have_visitor;
GeglVisitor *finish_visitor;
};
struct _GeglEvalMgrClass
{
GObjectClass parent_class;
};
GType gegl_eval_mgr_get_type (void) G_GNUC_CONST;
GeglBuffer * gegl_eval_mgr_apply (GeglEvalMgr *self);
GeglEvalMgr * gegl_eval_mgr_new (GeglNode *node,
const gchar *pad_name);
G_END_DECLS
#endif /* __GEGL_EVAL_MGR_H__ */