/**
 * $Id$
 *
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * 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.
 *
 * The Original Code is Copyright (C) 2009 Blender Foundation, Joshua Leung
 * All rights reserved.
 *
 * The Original Code is: all of this file.
 *
 * Contributor(s): Joshua Leung (full recode)
 *
 * ***** END GPL LICENSE BLOCK *****
 */

#ifndef BKE_NLA_H
#define BKE_NLA_H

struct AnimData;
struct NlaStrip;
struct NlaTrack;
struct bAction;

/* ----------------------------- */
/* Data Management */

void free_nlastrip(ListBase *strips, struct NlaStrip *strip);
void free_nlatrack(ListBase *tracks, struct NlaTrack *nlt);
void free_nladata(ListBase *tracks);

struct NlaStrip *copy_nlastrip(struct NlaStrip *strip);
struct NlaTrack *copy_nlatrack(struct NlaTrack *nlt);
void copy_nladata(ListBase *dst, ListBase *src);

struct NlaTrack *add_nlatrack(struct AnimData *adt, struct NlaTrack *prev);
struct NlaStrip *add_nlastrip(struct bAction *act);
struct NlaStrip *add_nlastrip_to_stack(struct AnimData *adt, struct bAction *act);

/* ----------------------------- */
/* API */

short BKE_nlastrips_has_space(ListBase *strips, float start, float end);
void BKE_nlastrips_sort_strips(ListBase *strips);

short BKE_nlastrips_add_strip(ListBase *strips, struct NlaStrip *strip);


void BKE_nlastrips_make_metas(ListBase *strips, short temp);
void BKE_nlastrips_clear_metas(ListBase *strips, short onlySel, short onlyTemp);
void BKE_nlastrips_clear_metastrip(ListBase *strips, struct NlaStrip *strip);
short BKE_nlameta_add_strip(struct NlaStrip *mstrip, struct NlaStrip *strip);
void BKE_nlameta_flush_transforms(struct NlaStrip *mstrip);

/* ............ */

struct NlaTrack *BKE_nlatrack_find_active(ListBase *tracks);
void BKE_nlatrack_set_active(ListBase *tracks, struct NlaTrack *nlt);

void BKE_nlatrack_solo_toggle(struct AnimData *adt, struct NlaTrack *nlt);

short BKE_nlatrack_has_space(struct NlaTrack *nlt, float start, float end);
void BKE_nlatrack_sort_strips(struct NlaTrack *nlt);

short BKE_nlatrack_add_strip(struct NlaTrack *nlt, struct NlaStrip *strip);

/* ............ */

struct NlaStrip *BKE_nlastrip_find_active(struct NlaTrack *nlt);
void BKE_nlastrip_set_active(struct AnimData *adt, struct NlaStrip *strip);

short BKE_nlastrip_within_bounds(struct NlaStrip *strip, float min, float max);

void BKE_nlastrip_validate_name(struct AnimData *adt, struct NlaStrip *strip);

/* ............ */

short BKE_nlatrack_has_animated_strips(struct NlaTrack *nlt);
short BKE_nlatracks_have_animated_strips(ListBase *tracks);
void BKE_nlastrip_validate_fcurves(struct NlaStrip *strip);

void BKE_nla_validate_state(struct AnimData *adt);

/* ............ */

void BKE_nla_action_pushdown(struct AnimData *adt);

short BKE_nla_tweakmode_enter(struct AnimData *adt);
void BKE_nla_tweakmode_exit(struct AnimData *adt);

/* ----------------------------- */
/* Time Mapping */

/* time mapping conversion modes */
enum {
		/* convert from global time to strip time - for evaluation */
	NLATIME_CONVERT_EVAL = 0,
		/* convert from global time to strip time - for editing corrections */
		// XXX old 0 invert
	NLATIME_CONVERT_UNMAP,
		/* convert from strip time to global time */
		// xxx old 1 invert
	NLATIME_CONVERT_MAP,
} eNlaTime_ConvertModes;

float BKE_nla_tweakedit_remap(struct AnimData *adt, float cframe, short mode);

#endif